Severe Storms

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0100 AM CDT Wed Aug 14 2024 Valid 141200Z - 151200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS CENTERED OVER THE MIDDLE MISSOURI VALLEY AREA... ...SUMMARY... Isolated severe thunderstorms are expected today from parts of the Intermountain West eastward across the northern and central Plains. A more concentrated risk -- including potential for large hail and damaging winds, and possibly a tornado -- is expected across the mid Missouri Valley area. ...Synopsis... A low-amplitude mid-level trough is forecast to move out of the Intermountain West and into the northern/central Plains today, shunting the central U.S. ridge eastward across the Mississippi Valley and into the Great Lakes/Ohio and Tennessee Valleys. Farther downstream, an eastern U.S. trough will gradually shift off the East Coast and into the western Atlantic. Meanwhile upstream, an eastern Pacific short-wave trough will move into the Pacific Northwest/northern California through the second half of the period. At the surface, weak/broad low pressure initially over the High Plains is forecast to gradually consolidate as it shifts eastward across the central Plains, in tandem with the advance of the upper trough. As this occurs, a cool front will shift southeastward across the central Plains through the afternoon and evening. Overnight, further consolidation of the surface low is expected as it moves slowly northeastward into southern Minnesota, while the trailing front sharpens, extending from the low southwestward across Kansas and into New Mexico by the end of the period. ...Middle Missouri Valley area... As an ongoing MCS crosses the Mid Missouri Valley area of eastern Nebraska and vicinity early in the period, a resulting/remnant outflow boundary is forecast to persist into the afternoon across the southeastern Nebraska/northwestern Missouri/southwestern Iowa area. As a moist low-level airmass undergoes diurnal heating, moderate destabilization is forecast near and south of this boundary. As low pressure -- and the attendant cold front -- shifts eastward into this area, the low/front and remnant outflow should all provide low-level foci for late afternoon storm initiation. With enhanced southerly low-level flow ahead of the advancing mid-level trough beneath moderate (30 to 40 kt) mid-level westerlies, resulting shear suggests that initial storms will likely be supercells, capable of producing large hail and damaging winds, and possibly a tornado. With time, clustering/upscale growth is expected, with guidance suggesting that an at least loosely organized band of storms should move eastward through the evening across, northwestern Missouri, and eastern Kansas. Risk for locally damaging wind gusts and some hail will likely accompany this activity, before severe risk diminishes gradually overnight. ...Wyoming and vicinity eastward across the northern and central Plains... As the upper trough -- comprised of several vorticity maxima embedded in the broader cyclonic flow field -- shifts across the Rockies toward/into the Plains, daytime heating beneath cooler air at mid levels will support modest destabilization across a broad area. Ascent -- focused near favored higher terrain areas and near various weak surface boundaries -- will contribute to widely scattered thunderstorm development during the afternoon. Moderate mid-level westerlies will contribute to shear sufficient for a few stronger storms -- and attendant risks for hail and locally strong/severe wind gusts into the evening hours. ..Goss/Halbert.. 08/14/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0100 AM CDT Wed Aug 14 2024 Valid 141200Z - 151200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS CENTERED OVER THE MIDDLE MISSOURI VALLEY AREA... ...SUMMARY... Isolated severe thunderstorms are expected today from parts of the Intermountain West eastward across the northern and central Plains. A more concentrated risk -- including potential for large hail and damaging winds, and possibly a tornado -- is expected across the mid Missouri Valley area. ...Synopsis... A low-amplitude mid-level trough is forecast to move out of the Intermountain West and into the northern/central Plains today, shunting the central U.S. ridge eastward across the Mississippi Valley and into the Great Lakes/Ohio and Tennessee Valleys. Farther downstream, an eastern U.S. trough will gradually shift off the East Coast and into the western Atlantic. Meanwhile upstream, an eastern Pacific short-wave trough will move into the Pacific Northwest/northern California through the second half of the period. At the surface, weak/broad low pressure initially over the High Plains is forecast to gradually consolidate as it shifts eastward across the central Plains, in tandem with the advance of the upper trough. As this occurs, a cool front will shift southeastward across the central Plains through the afternoon and evening. Overnight, further consolidation of the surface low is expected as it moves slowly northeastward into southern Minnesota, while the trailing front sharpens, extending from the low southwestward across Kansas and into New Mexico by the end of the period. ...Middle Missouri Valley area... As an ongoing MCS crosses the Mid Missouri Valley area of eastern Nebraska and vicinity early in the period, a resulting/remnant outflow boundary is forecast to persist into the afternoon across the southeastern Nebraska/northwestern Missouri/southwestern Iowa area. As a moist low-level airmass undergoes diurnal heating, moderate destabilization is forecast near and south of this boundary. As low pressure -- and the attendant cold front -- shifts eastward into this area, the low/front and remnant outflow should all provide low-level foci for late afternoon storm initiation. With enhanced southerly low-level flow ahead of the advancing mid-level trough beneath moderate (30 to 40 kt) mid-level westerlies, resulting shear suggests that initial storms will likely be supercells, capable of producing large hail and damaging winds, and possibly a tornado. With time, clustering/upscale growth is expected, with guidance suggesting that an at least loosely organized band of storms should move eastward through the evening across, northwestern Missouri, and eastern Kansas. Risk for locally damaging wind gusts and some hail will likely accompany this activity, before severe risk diminishes gradually overnight. ...Wyoming and vicinity eastward across the northern and central Plains... As the upper trough -- comprised of several vorticity maxima embedded in the broader cyclonic flow field -- shifts across the Rockies toward/into the Plains, daytime heating beneath cooler air at mid levels will support modest destabilization across a broad area. Ascent -- focused near favored higher terrain areas and near various weak surface boundaries -- will contribute to widely scattered thunderstorm development during the afternoon. Moderate mid-level westerlies will contribute to shear sufficient for a few stronger storms -- and attendant risks for hail and locally strong/severe wind gusts into the evening hours. ..Goss/Halbert.. 08/14/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0100 AM CDT Wed Aug 14 2024 Valid 141200Z - 151200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS CENTERED OVER THE MIDDLE MISSOURI VALLEY AREA... ...SUMMARY... Isolated severe thunderstorms are expected today from parts of the Intermountain West eastward across the northern and central Plains. A more concentrated risk -- including potential for large hail and damaging winds, and possibly a tornado -- is expected across the mid Missouri Valley area. ...Synopsis... A low-amplitude mid-level trough is forecast to move out of the Intermountain West and into the northern/central Plains today, shunting the central U.S. ridge eastward across the Mississippi Valley and into the Great Lakes/Ohio and Tennessee Valleys. Farther downstream, an eastern U.S. trough will gradually shift off the East Coast and into the western Atlantic. Meanwhile upstream, an eastern Pacific short-wave trough will move into the Pacific Northwest/northern California through the second half of the period. At the surface, weak/broad low pressure initially over the High Plains is forecast to gradually consolidate as it shifts eastward across the central Plains, in tandem with the advance of the upper trough. As this occurs, a cool front will shift southeastward across the central Plains through the afternoon and evening. Overnight, further consolidation of the surface low is expected as it moves slowly northeastward into southern Minnesota, while the trailing front sharpens, extending from the low southwestward across Kansas and into New Mexico by the end of the period. ...Middle Missouri Valley area... As an ongoing MCS crosses the Mid Missouri Valley area of eastern Nebraska and vicinity early in the period, a resulting/remnant outflow boundary is forecast to persist into the afternoon across the southeastern Nebraska/northwestern Missouri/southwestern Iowa area. As a moist low-level airmass undergoes diurnal heating, moderate destabilization is forecast near and south of this boundary. As low pressure -- and the attendant cold front -- shifts eastward into this area, the low/front and remnant outflow should all provide low-level foci for late afternoon storm initiation. With enhanced southerly low-level flow ahead of the advancing mid-level trough beneath moderate (30 to 40 kt) mid-level westerlies, resulting shear suggests that initial storms will likely be supercells, capable of producing large hail and damaging winds, and possibly a tornado. With time, clustering/upscale growth is expected, with guidance suggesting that an at least loosely organized band of storms should move eastward through the evening across, northwestern Missouri, and eastern Kansas. Risk for locally damaging wind gusts and some hail will likely accompany this activity, before severe risk diminishes gradually overnight. ...Wyoming and vicinity eastward across the northern and central Plains... As the upper trough -- comprised of several vorticity maxima embedded in the broader cyclonic flow field -- shifts across the Rockies toward/into the Plains, daytime heating beneath cooler air at mid levels will support modest destabilization across a broad area. Ascent -- focused near favored higher terrain areas and near various weak surface boundaries -- will contribute to widely scattered thunderstorm development during the afternoon. Moderate mid-level westerlies will contribute to shear sufficient for a few stronger storms -- and attendant risks for hail and locally strong/severe wind gusts into the evening hours. ..Goss/Halbert.. 08/14/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0100 AM CDT Wed Aug 14 2024 Valid 141200Z - 151200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS CENTERED OVER THE MIDDLE MISSOURI VALLEY AREA... ...SUMMARY... Isolated severe thunderstorms are expected today from parts of the Intermountain West eastward across the northern and central Plains. A more concentrated risk -- including potential for large hail and damaging winds, and possibly a tornado -- is expected across the mid Missouri Valley area. ...Synopsis... A low-amplitude mid-level trough is forecast to move out of the Intermountain West and into the northern/central Plains today, shunting the central U.S. ridge eastward across the Mississippi Valley and into the Great Lakes/Ohio and Tennessee Valleys. Farther downstream, an eastern U.S. trough will gradually shift off the East Coast and into the western Atlantic. Meanwhile upstream, an eastern Pacific short-wave trough will move into the Pacific Northwest/northern California through the second half of the period. At the surface, weak/broad low pressure initially over the High Plains is forecast to gradually consolidate as it shifts eastward across the central Plains, in tandem with the advance of the upper trough. As this occurs, a cool front will shift southeastward across the central Plains through the afternoon and evening. Overnight, further consolidation of the surface low is expected as it moves slowly northeastward into southern Minnesota, while the trailing front sharpens, extending from the low southwestward across Kansas and into New Mexico by the end of the period. ...Middle Missouri Valley area... As an ongoing MCS crosses the Mid Missouri Valley area of eastern Nebraska and vicinity early in the period, a resulting/remnant outflow boundary is forecast to persist into the afternoon across the southeastern Nebraska/northwestern Missouri/southwestern Iowa area. As a moist low-level airmass undergoes diurnal heating, moderate destabilization is forecast near and south of this boundary. As low pressure -- and the attendant cold front -- shifts eastward into this area, the low/front and remnant outflow should all provide low-level foci for late afternoon storm initiation. With enhanced southerly low-level flow ahead of the advancing mid-level trough beneath moderate (30 to 40 kt) mid-level westerlies, resulting shear suggests that initial storms will likely be supercells, capable of producing large hail and damaging winds, and possibly a tornado. With time, clustering/upscale growth is expected, with guidance suggesting that an at least loosely organized band of storms should move eastward through the evening across, northwestern Missouri, and eastern Kansas. Risk for locally damaging wind gusts and some hail will likely accompany this activity, before severe risk diminishes gradually overnight. ...Wyoming and vicinity eastward across the northern and central Plains... As the upper trough -- comprised of several vorticity maxima embedded in the broader cyclonic flow field -- shifts across the Rockies toward/into the Plains, daytime heating beneath cooler air at mid levels will support modest destabilization across a broad area. Ascent -- focused near favored higher terrain areas and near various weak surface boundaries -- will contribute to widely scattered thunderstorm development during the afternoon. Moderate mid-level westerlies will contribute to shear sufficient for a few stronger storms -- and attendant risks for hail and locally strong/severe wind gusts into the evening hours. ..Goss/Halbert.. 08/14/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0100 AM CDT Wed Aug 14 2024 Valid 141200Z - 151200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS CENTERED OVER THE MIDDLE MISSOURI VALLEY AREA... ...SUMMARY... Isolated severe thunderstorms are expected today from parts of the Intermountain West eastward across the northern and central Plains. A more concentrated risk -- including potential for large hail and damaging winds, and possibly a tornado -- is expected across the mid Missouri Valley area. ...Synopsis... A low-amplitude mid-level trough is forecast to move out of the Intermountain West and into the northern/central Plains today, shunting the central U.S. ridge eastward across the Mississippi Valley and into the Great Lakes/Ohio and Tennessee Valleys. Farther downstream, an eastern U.S. trough will gradually shift off the East Coast and into the western Atlantic. Meanwhile upstream, an eastern Pacific short-wave trough will move into the Pacific Northwest/northern California through the second half of the period. At the surface, weak/broad low pressure initially over the High Plains is forecast to gradually consolidate as it shifts eastward across the central Plains, in tandem with the advance of the upper trough. As this occurs, a cool front will shift southeastward across the central Plains through the afternoon and evening. Overnight, further consolidation of the surface low is expected as it moves slowly northeastward into southern Minnesota, while the trailing front sharpens, extending from the low southwestward across Kansas and into New Mexico by the end of the period. ...Middle Missouri Valley area... As an ongoing MCS crosses the Mid Missouri Valley area of eastern Nebraska and vicinity early in the period, a resulting/remnant outflow boundary is forecast to persist into the afternoon across the southeastern Nebraska/northwestern Missouri/southwestern Iowa area. As a moist low-level airmass undergoes diurnal heating, moderate destabilization is forecast near and south of this boundary. As low pressure -- and the attendant cold front -- shifts eastward into this area, the low/front and remnant outflow should all provide low-level foci for late afternoon storm initiation. With enhanced southerly low-level flow ahead of the advancing mid-level trough beneath moderate (30 to 40 kt) mid-level westerlies, resulting shear suggests that initial storms will likely be supercells, capable of producing large hail and damaging winds, and possibly a tornado. With time, clustering/upscale growth is expected, with guidance suggesting that an at least loosely organized band of storms should move eastward through the evening across, northwestern Missouri, and eastern Kansas. Risk for locally damaging wind gusts and some hail will likely accompany this activity, before severe risk diminishes gradually overnight. ...Wyoming and vicinity eastward across the northern and central Plains... As the upper trough -- comprised of several vorticity maxima embedded in the broader cyclonic flow field -- shifts across the Rockies toward/into the Plains, daytime heating beneath cooler air at mid levels will support modest destabilization across a broad area. Ascent -- focused near favored higher terrain areas and near various weak surface boundaries -- will contribute to widely scattered thunderstorm development during the afternoon. Moderate mid-level westerlies will contribute to shear sufficient for a few stronger storms -- and attendant risks for hail and locally strong/severe wind gusts into the evening hours. ..Goss/Halbert.. 08/14/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0100 AM CDT Wed Aug 14 2024 Valid 141200Z - 151200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS CENTERED OVER THE MIDDLE MISSOURI VALLEY AREA... ...SUMMARY... Isolated severe thunderstorms are expected today from parts of the Intermountain West eastward across the northern and central Plains. A more concentrated risk -- including potential for large hail and damaging winds, and possibly a tornado -- is expected across the mid Missouri Valley area. ...Synopsis... A low-amplitude mid-level trough is forecast to move out of the Intermountain West and into the northern/central Plains today, shunting the central U.S. ridge eastward across the Mississippi Valley and into the Great Lakes/Ohio and Tennessee Valleys. Farther downstream, an eastern U.S. trough will gradually shift off the East Coast and into the western Atlantic. Meanwhile upstream, an eastern Pacific short-wave trough will move into the Pacific Northwest/northern California through the second half of the period. At the surface, weak/broad low pressure initially over the High Plains is forecast to gradually consolidate as it shifts eastward across the central Plains, in tandem with the advance of the upper trough. As this occurs, a cool front will shift southeastward across the central Plains through the afternoon and evening. Overnight, further consolidation of the surface low is expected as it moves slowly northeastward into southern Minnesota, while the trailing front sharpens, extending from the low southwestward across Kansas and into New Mexico by the end of the period. ...Middle Missouri Valley area... As an ongoing MCS crosses the Mid Missouri Valley area of eastern Nebraska and vicinity early in the period, a resulting/remnant outflow boundary is forecast to persist into the afternoon across the southeastern Nebraska/northwestern Missouri/southwestern Iowa area. As a moist low-level airmass undergoes diurnal heating, moderate destabilization is forecast near and south of this boundary. As low pressure -- and the attendant cold front -- shifts eastward into this area, the low/front and remnant outflow should all provide low-level foci for late afternoon storm initiation. With enhanced southerly low-level flow ahead of the advancing mid-level trough beneath moderate (30 to 40 kt) mid-level westerlies, resulting shear suggests that initial storms will likely be supercells, capable of producing large hail and damaging winds, and possibly a tornado. With time, clustering/upscale growth is expected, with guidance suggesting that an at least loosely organized band of storms should move eastward through the evening across, northwestern Missouri, and eastern Kansas. Risk for locally damaging wind gusts and some hail will likely accompany this activity, before severe risk diminishes gradually overnight. ...Wyoming and vicinity eastward across the northern and central Plains... As the upper trough -- comprised of several vorticity maxima embedded in the broader cyclonic flow field -- shifts across the Rockies toward/into the Plains, daytime heating beneath cooler air at mid levels will support modest destabilization across a broad area. Ascent -- focused near favored higher terrain areas and near various weak surface boundaries -- will contribute to widely scattered thunderstorm development during the afternoon. Moderate mid-level westerlies will contribute to shear sufficient for a few stronger storms -- and attendant risks for hail and locally strong/severe wind gusts into the evening hours. ..Goss/Halbert.. 08/14/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0100 AM CDT Wed Aug 14 2024 Valid 141200Z - 151200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS CENTERED OVER THE MIDDLE MISSOURI VALLEY AREA... ...SUMMARY... Isolated severe thunderstorms are expected today from parts of the Intermountain West eastward across the northern and central Plains. A more concentrated risk -- including potential for large hail and damaging winds, and possibly a tornado -- is expected across the mid Missouri Valley area. ...Synopsis... A low-amplitude mid-level trough is forecast to move out of the Intermountain West and into the northern/central Plains today, shunting the central U.S. ridge eastward across the Mississippi Valley and into the Great Lakes/Ohio and Tennessee Valleys. Farther downstream, an eastern U.S. trough will gradually shift off the East Coast and into the western Atlantic. Meanwhile upstream, an eastern Pacific short-wave trough will move into the Pacific Northwest/northern California through the second half of the period. At the surface, weak/broad low pressure initially over the High Plains is forecast to gradually consolidate as it shifts eastward across the central Plains, in tandem with the advance of the upper trough. As this occurs, a cool front will shift southeastward across the central Plains through the afternoon and evening. Overnight, further consolidation of the surface low is expected as it moves slowly northeastward into southern Minnesota, while the trailing front sharpens, extending from the low southwestward across Kansas and into New Mexico by the end of the period. ...Middle Missouri Valley area... As an ongoing MCS crosses the Mid Missouri Valley area of eastern Nebraska and vicinity early in the period, a resulting/remnant outflow boundary is forecast to persist into the afternoon across the southeastern Nebraska/northwestern Missouri/southwestern Iowa area. As a moist low-level airmass undergoes diurnal heating, moderate destabilization is forecast near and south of this boundary. As low pressure -- and the attendant cold front -- shifts eastward into this area, the low/front and remnant outflow should all provide low-level foci for late afternoon storm initiation. With enhanced southerly low-level flow ahead of the advancing mid-level trough beneath moderate (30 to 40 kt) mid-level westerlies, resulting shear suggests that initial storms will likely be supercells, capable of producing large hail and damaging winds, and possibly a tornado. With time, clustering/upscale growth is expected, with guidance suggesting that an at least loosely organized band of storms should move eastward through the evening across, northwestern Missouri, and eastern Kansas. Risk for locally damaging wind gusts and some hail will likely accompany this activity, before severe risk diminishes gradually overnight. ...Wyoming and vicinity eastward across the northern and central Plains... As the upper trough -- comprised of several vorticity maxima embedded in the broader cyclonic flow field -- shifts across the Rockies toward/into the Plains, daytime heating beneath cooler air at mid levels will support modest destabilization across a broad area. Ascent -- focused near favored higher terrain areas and near various weak surface boundaries -- will contribute to widely scattered thunderstorm development during the afternoon. Moderate mid-level westerlies will contribute to shear sufficient for a few stronger storms -- and attendant risks for hail and locally strong/severe wind gusts into the evening hours. ..Goss/Halbert.. 08/14/2024 Read more

WW 0621 Status Updates
STATUS REPORT ON WW 621 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 ESE MCK TO 30 SW EAR TO 5 SSW BUB. ..SMITH..08/14/24 ATTN...WFO...GID...LBF... STATUS REPORT FOR WS 621 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC001-019-061-065-077-079-083-093-099-137-163-175-181-140630- NE . NEBRASKA COUNTIES INCLUDED ARE ADAMS BUFFALO FRANKLIN FURNAS GREELEY HALL HARLAN HOWARD KEARNEY PHELPS SHERMAN VALLEY WEBSTER THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 0621 Status Updates
STATUS REPORT ON WW 621 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 ESE MCK TO 30 SW EAR TO 5 SSW BUB. ..SMITH..08/14/24 ATTN...WFO...GID...LBF... STATUS REPORT FOR WS 621 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC001-019-061-065-077-079-083-093-099-137-163-175-181-140630- NE . NEBRASKA COUNTIES INCLUDED ARE ADAMS BUFFALO FRANKLIN FURNAS GREELEY HALL HARLAN HOWARD KEARNEY PHELPS SHERMAN VALLEY WEBSTER THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 0621 Status Updates
STATUS REPORT ON WW 621 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 ESE MCK TO 30 SW EAR TO 5 SSW BUB. ..SMITH..08/14/24 ATTN...WFO...GID...LBF... STATUS REPORT FOR WS 621 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC001-019-061-065-077-079-083-093-099-137-163-175-181-140630- NE . NEBRASKA COUNTIES INCLUDED ARE ADAMS BUFFALO FRANKLIN FURNAS GREELEY HALL HARLAN HOWARD KEARNEY PHELPS SHERMAN VALLEY WEBSTER THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 621 SEVERE TSTM NE 140430Z - 141200Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 621 NWS Storm Prediction Center Norman OK 1130 PM CDT Tue Aug 13 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and south-central Nebraska * Effective this Tuesday night and Wednesday morning from 1130 PM until 700 AM CDT. * Primary threats include... Isolated damaging wind gusts to 70 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...A cluster of occasionally severe thunderstorms -- which produced a 60-kt at MCK during the last half hour -- will maintain severe potential into the watch area before weakening later tonight. Isolated large hail also may occur, either in the main MCS or in precursory convection. The severe thunderstorm watch area is approximately along and 50 statute miles east and west of a line from 50 miles south southwest of Kearney NE to 30 miles northeast of Broken Bow NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 620... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean storm motion vector 27030. ...Edwards Read more

WW 0620 Status Updates
STATUS REPORT ON WW 620 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 S ITR TO 35 WSW MCK TO 15 WNW MCK TO 35 NNW MCK TO 30 W LBF TO 45 SW MHN. ..BROYLES..08/14/24 ATTN...WFO...BOU...GLD...LBF...CYS... STATUS REPORT FOR WS 620 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC023-039-109-137-153-179-181-193-199-140540- KS . KANSAS COUNTIES INCLUDED ARE CHEYENNE DECATUR LOGAN NORTON RAWLINS SHERIDAN SHERMAN THOMAS WALLACE NEC029-057-063-085-087-111-135-145-140540- NE . NEBRASKA COUNTIES INCLUDED ARE CHASE DUNDY FRONTIER HAYES HITCHCOCK LINCOLN PERKINS RED WILLOW THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 0620 Status Updates
STATUS REPORT ON WW 620 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 S ITR TO 35 WSW MCK TO 15 WNW MCK TO 35 NNW MCK TO 30 W LBF TO 45 SW MHN. ..BROYLES..08/14/24 ATTN...WFO...BOU...GLD...LBF...CYS... STATUS REPORT FOR WS 620 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC023-039-109-137-153-179-181-193-199-140540- KS . KANSAS COUNTIES INCLUDED ARE CHEYENNE DECATUR LOGAN NORTON RAWLINS SHERIDAN SHERMAN THOMAS WALLACE NEC029-057-063-085-087-111-135-145-140540- NE . NEBRASKA COUNTIES INCLUDED ARE CHASE DUNDY FRONTIER HAYES HITCHCOCK LINCOLN PERKINS RED WILLOW THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 0620 Status Updates
STATUS REPORT ON WW 620 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 S ITR TO 35 WSW MCK TO 15 WNW MCK TO 35 NNW MCK TO 30 W LBF TO 45 SW MHN. ..BROYLES..08/14/24 ATTN...WFO...BOU...GLD...LBF...CYS... STATUS REPORT FOR WS 620 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC023-039-109-137-153-179-181-193-199-140540- KS . KANSAS COUNTIES INCLUDED ARE CHEYENNE DECATUR LOGAN NORTON RAWLINS SHERIDAN SHERMAN THOMAS WALLACE NEC029-057-063-085-087-111-135-145-140540- NE . NEBRASKA COUNTIES INCLUDED ARE CHASE DUNDY FRONTIER HAYES HITCHCOCK LINCOLN PERKINS RED WILLOW THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 0620 Status Updates
STATUS REPORT ON WW 620 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 S ITR TO 35 WSW MCK TO 15 WNW MCK TO 35 NNW MCK TO 30 W LBF TO 45 SW MHN. ..BROYLES..08/14/24 ATTN...WFO...BOU...GLD...LBF...CYS... STATUS REPORT FOR WS 620 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC023-039-109-137-153-179-181-193-199-140540- KS . KANSAS COUNTIES INCLUDED ARE CHEYENNE DECATUR LOGAN NORTON RAWLINS SHERIDAN SHERMAN THOMAS WALLACE NEC029-057-063-085-087-111-135-145-140540- NE . NEBRASKA COUNTIES INCLUDED ARE CHASE DUNDY FRONTIER HAYES HITCHCOCK LINCOLN PERKINS RED WILLOW THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

MD 1897 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR SOUTH-CENTRAL NEBRASKA AND NORTH-CENTRAL KANSAS
Mesoscale Discussion 1897 NWS Storm Prediction Center Norman OK 1000 PM CDT Tue Aug 13 2024 Areas affected...South-central Nebraska and North-central Kansas Concerning...Severe potential...Watch possible Valid 140300Z - 140500Z Probability of Watch Issuance...60 percent SUMMARY...A new severe thunderstorm watch may be needed as a linear MCS continues to process eastward across southern Nebraska and northern Kansas. DISCUSSION...A linear MCS with a history of 60-70 MPH observed winds is continuing to progress across portions of northern Kansas and southern Nebraska, with a pronounced bow echo evident on radar in southern Nebraska. This bow echo will serve as the primary focus for the greatest short-term severe risk over the next few hours. Some uncertainty remains in the eastward longevity of this convective line, but SPC mesoanalysis suggests that continued warm air advection in the low levels has limited nocturnal boundary layer stabilization and subsequent development of MLCINH. The expectation is that the line will eventually weaken with eastward extent, but a new severe thunderstorm watch may be necessary if the line maintains its current strength. ..Halbert/Wendt/Edwards.. 08/14/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...GID...LBF...DDC...GLD... LAT...LON 38730069 38710122 39090149 39770154 40740111 41250077 41480026 41539928 41519865 40959811 40389800 39739797 39519820 39369870 39329885 39139940 38910010 38730069 Read more

WW 620 SEVERE TSTM CO KS NE 132250Z - 140700Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 620 NWS Storm Prediction Center Norman OK 450 PM MDT Tue Aug 13 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of East-central and northeastern Colorado Northwestern Kansas Southwestern Nebraska * Effective this Tuesday afternoon and Wednesday morning from 450 PM until 100 AM MDT. * Primary threats include... Scattered damaging wind gusts to 70 mph likely Isolated very large hail events to 2 inches in diameter possible A tornado or two possible SUMMARY...Initially widely scattered strong-severe thunderstorms east of the Front Range should become denser in coverage and organize into one or more clusters, with increasing severe potential over the next several hours as the activity moves eastward across the High Plains, into greater moisture. The severe thunderstorm watch area is approximately along and 80 statute miles north and south of a line from 45 miles west northwest of Akron CO to 25 miles northeast of Mccook NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU0). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean storm motion vector 27030. ...Edwards Read more

WW 0621 Status Updates
STATUS FOR WATCH 0621 HAS NOT BEEN ISSUED YET Read more

WW 0620 Status Updates
STATUS REPORT ON WW 620 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 NNW GCK TO 40 SSE ITR TO 40 SW IML TO 40 N IML TO 25 NE LBF. ..HALBERT..08/14/24 ATTN...WFO...BOU...GLD...LBF...CYS... STATUS REPORT FOR WS 620 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC023-039-109-153-179-181-193-199-140440- KS . KANSAS COUNTIES INCLUDED ARE CHEYENNE DECATUR LOGAN RAWLINS SHERIDAN SHERMAN THOMAS WALLACE NEC029-057-063-085-087-111-135-145-140440- NE . NEBRASKA COUNTIES INCLUDED ARE CHASE DUNDY FRONTIER HAYES HITCHCOCK LINCOLN PERKINS RED WILLOW THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 0620 Status Updates
STATUS REPORT ON WW 620 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 NNE LAA TO 45 E AKO TO 45 ENE SNY TO 25 SSW MHN. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1896 ..HALBERT..08/14/24 ATTN...WFO...BOU...GLD...LBF...CYS... STATUS REPORT FOR WS 620 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC017-063-125-140340- CO . COLORADO COUNTIES INCLUDED ARE CHEYENNE KIT CARSON YUMA KSC023-039-071-109-153-179-181-193-199-203-140340- KS . KANSAS COUNTIES INCLUDED ARE CHEYENNE DECATUR GREELEY LOGAN RAWLINS SHERIDAN SHERMAN THOMAS WALLACE WICHITA NEC029-057-063-085-087-101-111-113-117-135-145-140340- NE . NEBRASKA COUNTIES INCLUDED ARE Read more