Severe Storms

WW 0440 Status Updates
STATUS REPORT ON WW 440 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 E AIA TO 45 WNW MHN TO 60 NW MHN TO 40 WNW VTN TO 45 SSE PHP. ..WENDT..06/21/24 ATTN...WFO...LBF...UNR...FSD... STATUS REPORT FOR WS 440 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC005-009-015-017-031-071-075-089-091-103-113-115-117-149-171- 183-210140- NE . NEBRASKA COUNTIES INCLUDED ARE ARTHUR BLAINE BOYD BROWN CHERRY GARFIELD GRANT HOLT HOOKER KEYA PAHA LOGAN LOUP MCPHERSON ROCK THOMAS WHEELER SDC023-043-053-121-123-210140- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE CHARLES MIX DOUGLAS GREGORY TODD TRIPP THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL Read more

WW 0439 Status Updates
STATUS REPORT ON WW 439 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NE DEN TO 40 WNW AKO TO 20 W SNY TO 20 NW SNY TO 20 SSE AIA TO 35 ENE AIA TO 50 ENE AIA. ..WENDT..06/21/24 ATTN...WFO...BOU...CYS...LBF...UNR... STATUS REPORT FOR WS 439 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-115-123-210140- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN SEDGWICK WELD NEC033-049-069-123-210140- NE . NEBRASKA COUNTIES INCLUDED ARE CHEYENNE DEUEL GARDEN MORRILL 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 0439 Status Updates
STATUS REPORT ON WW 439 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NE DEN TO 40 WNW AKO TO 20 W SNY TO 20 NW SNY TO 20 SSE AIA TO 35 ENE AIA TO 50 ENE AIA. ..WENDT..06/21/24 ATTN...WFO...BOU...CYS...LBF...UNR... STATUS REPORT FOR WS 439 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-115-123-210140- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN SEDGWICK WELD NEC033-049-069-123-210140- NE . NEBRASKA COUNTIES INCLUDED ARE CHEYENNE DEUEL GARDEN MORRILL 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 0439 Status Updates
STATUS REPORT ON WW 439 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NE DEN TO 40 WNW AKO TO 20 W SNY TO 20 NW SNY TO 20 SSE AIA TO 35 ENE AIA TO 50 ENE AIA. ..WENDT..06/21/24 ATTN...WFO...BOU...CYS...LBF...UNR... STATUS REPORT FOR WS 439 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-115-123-210140- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN SEDGWICK WELD NEC033-049-069-123-210140- NE . NEBRASKA COUNTIES INCLUDED ARE CHEYENNE DEUEL GARDEN MORRILL 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 0439 Status Updates
STATUS REPORT ON WW 439 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NE DEN TO 40 WNW AKO TO 20 W SNY TO 20 NW SNY TO 20 SSE AIA TO 35 ENE AIA TO 50 ENE AIA. ..WENDT..06/21/24 ATTN...WFO...BOU...CYS...LBF...UNR... STATUS REPORT FOR WS 439 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-115-123-210140- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN SEDGWICK WELD NEC033-049-069-123-210140- NE . NEBRASKA COUNTIES INCLUDED ARE CHEYENNE DEUEL GARDEN MORRILL 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 0439 Status Updates
STATUS REPORT ON WW 439 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NE DEN TO 40 WNW AKO TO 20 W SNY TO 20 NW SNY TO 20 SSE AIA TO 35 ENE AIA TO 50 ENE AIA. ..WENDT..06/21/24 ATTN...WFO...BOU...CYS...LBF...UNR... STATUS REPORT FOR WS 439 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-115-123-210140- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN SEDGWICK WELD NEC033-049-069-123-210140- NE . NEBRASKA COUNTIES INCLUDED ARE CHEYENNE DEUEL GARDEN MORRILL 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 439 SEVERE TSTM CO NE SD WY 201920Z - 210100Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 439 NWS Storm Prediction Center Norman OK 120 PM MDT Thu Jun 20 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeast Colorado Nebraska Panhandle Southwest South Dakota Southeast Wyoming * Effective this Thursday afternoon and evening from 120 PM until 700 PM MDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 75 mph possible Scattered large hail and isolated very large hail events to 2.5 inches in diameter possible A tornado or two possible SUMMARY...Thunderstorms will intensify this afternoon over southeast Wyoming and northeast Colorado and spread eastward through the early evening. Supercells capable of very large hail and damaging wind gusts are the main concern. An isolated tornado and/or landspout or two is also possible. The severe thunderstorm watch area is approximately along and 95 statute miles north and south of a line from 40 miles northwest of Cheyenne WY to 35 miles east northeast of Alliance NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU9). 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 438... AVIATION...A few severe thunderstorms with hail surface and aloft to 2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27030. ...Hart Read more

WW 0438 Status Updates
STATUS REPORT ON WW 438 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ESE RUT TO 5 ENE LCI TO 20 E PWM. PARTS OF REMAINING VALID PORTION OF WW 438 HAVE OR WILL BE LOCALLY EXTENDED IN TIME. OTHERWISE, A NEW WW IS NOT ANTICIPATED. ..KERR..06/20/24 ATTN...WFO...BOX...GYX...CAR...BTV...ALY... STATUS REPORT FOR WS 438 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MAC009-011-013-015-017-021-023-025-027-210000- MA . MASSACHUSETTS COUNTIES INCLUDED ARE ESSEX FRANKLIN HAMPDEN HAMPSHIRE MIDDLESEX NORFOLK PLYMOUTH SUFFOLK WORCESTER NHC011-015-210000- NH . NEW HAMPSHIRE COUNTIES INCLUDED ARE HILLSBOROUGH ROCKINGHAM ANZ230-250-251-210000- CW Read more

WW 0438 Status Updates
STATUS REPORT ON WW 438 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ESE RUT TO 5 ENE LCI TO 20 E PWM. PARTS OF REMAINING VALID PORTION OF WW 438 HAVE OR WILL BE LOCALLY EXTENDED IN TIME. OTHERWISE, A NEW WW IS NOT ANTICIPATED. ..KERR..06/20/24 ATTN...WFO...BOX...GYX...CAR...BTV...ALY... STATUS REPORT FOR WS 438 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MAC009-011-013-015-017-021-023-025-027-210000- MA . MASSACHUSETTS COUNTIES INCLUDED ARE ESSEX FRANKLIN HAMPDEN HAMPSHIRE MIDDLESEX NORFOLK PLYMOUTH SUFFOLK WORCESTER NHC011-015-210000- NH . NEW HAMPSHIRE COUNTIES INCLUDED ARE HILLSBOROUGH ROCKINGHAM ANZ230-250-251-210000- CW Read more

WW 0438 Status Updates
STATUS REPORT ON WW 438 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ESE RUT TO 5 ENE LCI TO 20 E PWM. PARTS OF REMAINING VALID PORTION OF WW 438 HAVE OR WILL BE LOCALLY EXTENDED IN TIME. OTHERWISE, A NEW WW IS NOT ANTICIPATED. ..KERR..06/20/24 ATTN...WFO...BOX...GYX...CAR...BTV...ALY... STATUS REPORT FOR WS 438 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MAC009-011-013-015-017-021-023-025-027-210000- MA . MASSACHUSETTS COUNTIES INCLUDED ARE ESSEX FRANKLIN HAMPDEN HAMPSHIRE MIDDLESEX NORFOLK PLYMOUTH SUFFOLK WORCESTER NHC011-015-210000- NH . NEW HAMPSHIRE COUNTIES INCLUDED ARE HILLSBOROUGH ROCKINGHAM ANZ230-250-251-210000- CW Read more

WW 0438 Status Updates
STATUS REPORT ON WW 438 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ESE RUT TO 5 ENE LCI TO 20 E PWM. PARTS OF REMAINING VALID PORTION OF WW 438 HAVE OR WILL BE LOCALLY EXTENDED IN TIME. OTHERWISE, A NEW WW IS NOT ANTICIPATED. ..KERR..06/20/24 ATTN...WFO...BOX...GYX...CAR...BTV...ALY... STATUS REPORT FOR WS 438 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MAC009-011-013-015-017-021-023-025-027-210000- MA . MASSACHUSETTS COUNTIES INCLUDED ARE ESSEX FRANKLIN HAMPDEN HAMPSHIRE MIDDLESEX NORFOLK PLYMOUTH SUFFOLK WORCESTER NHC011-015-210000- NH . NEW HAMPSHIRE COUNTIES INCLUDED ARE HILLSBOROUGH ROCKINGHAM ANZ230-250-251-210000- CW Read more

WW 0438 Status Updates
STATUS REPORT ON WW 438 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ESE RUT TO 5 ENE LCI TO 20 E PWM. PARTS OF REMAINING VALID PORTION OF WW 438 HAVE OR WILL BE LOCALLY EXTENDED IN TIME. OTHERWISE, A NEW WW IS NOT ANTICIPATED. ..KERR..06/20/24 ATTN...WFO...BOX...GYX...CAR...BTV...ALY... STATUS REPORT FOR WS 438 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MAC009-011-013-015-017-021-023-025-027-210000- MA . MASSACHUSETTS COUNTIES INCLUDED ARE ESSEX FRANKLIN HAMPDEN HAMPSHIRE MIDDLESEX NORFOLK PLYMOUTH SUFFOLK WORCESTER NHC011-015-210000- NH . NEW HAMPSHIRE COUNTIES INCLUDED ARE HILLSBOROUGH ROCKINGHAM ANZ230-250-251-210000- CW Read more

WW 438 SEVERE TSTM MA ME NH NY VT CW 201700Z - 210000Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 438 NWS Storm Prediction Center Norman OK 100 PM EDT Thu Jun 20 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northern Massachusetts Central and Western Maine New Hampshire Northeast New York Vermont Coastal Waters * Effective this Thursday afternoon and evening from 100 PM until 800 PM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1 inch in diameter possible SUMMARY...Scattered thunderstorms will develop through the afternoon and spread eastward across the watch area. The strongest cells will pose a risk of locally damaging wind gusts and hail. The severe thunderstorm watch area is approximately along and 60 statute miles north and south of a line from 40 miles west southwest of Saranac Lake NY to 25 miles southeast of Bangor ME. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU8). 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 1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 28030. ...Hart Read more

MD 1348 CONCERNING SEVERE THUNDERSTORM WATCH 438... FOR MUCH OF MASSACHUSETTS AND ADJACENT SOUTHERN NEW HAMPSHIRE
Mesoscale Discussion 1348 NWS Storm Prediction Center Norman OK 0535 PM CDT Thu Jun 20 2024 Areas affected...much of Massachusetts and adjacent southern New Hampshire Concerning...Severe Thunderstorm Watch 438... Valid 202235Z - 210030Z The severe weather threat for Severe Thunderstorm Watch 438 continues. SUMMARY...A developing cluster of thunderstorms may still pose increasing risk of producing damaging wind gusts while spreading southeastward across Massachusetts, perhaps including much of the Greater Boston vicinity, by 8-9 PM EDT. DISCUSSION...The boundary layer remains strongly heated (including surface temperatures near 90F) and characterized by seasonably high moisture content supportive of mixed-layer CAPE in excess of 2000 J/kg, along pre-frontal surface troughing inland of the southern New England coast. This is beneath prominent mid/upper ridging, but north of the ridge axis, where deep-layer westerly mean flow may be on the order of 15-20 kt. Aided by southerly low-level inflow of the unstable air, strengthening ongoing storms along a corridor southeast of Albany NY into the Keene NH vicinity may still undergo further intensification and upscale growth during the next hour or two. As this occurs, consolidating southeastward propagating outflow may be accompanied by increasing risk for potentially damaging wind gusts into the 00-01Z time frame. ..Kerr.. 06/20/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...GYX...BOX...ALY... LAT...LON 42427332 42777227 42807188 42827119 42117069 42037161 41987249 42077327 42427332 Read more

MD 1349 CONCERNING SEVERE THUNDERSTORM WATCH 440... FOR WESTERN INTO CENTRAL NEBRASKA
Mesoscale Discussion 1349 NWS Storm Prediction Center Norman OK 0633 PM CDT Thu Jun 20 2024 Areas affected...Western into central Nebraska Concerning...Severe Thunderstorm Watch 440... Valid 202333Z - 210100Z The severe weather threat for Severe Thunderstorm Watch 440 continues. SUMMARY...Severe winds will generally become the predominant threat in western/central Nebraska with time as an MCS moves east. Storms favorably interacting with the warm front, particularly those of discrete mode, will still pose some risk of a tornado and large hail. DISCUSSION...Storms continue to grow upscale into an MCS in western Nebraska. Severe winds will likely be on the increase with this activity--the Alliance, NE ASOS recently recorded a 70 kt gust. Temperatures ahead of this line of storms remain in the upper 80s to low 90s F and the low-level jet should increase over the next few hours, aiding in storm maintenance. Along the warm front, more discrete storms in northwest Cherry County and east of Ainsworth continue. These storms will pose the greatest risk for large hail and possibly a tornado should they interact favorably with the warm front. The storm east of Ainsworth produced one reported tornado so far. The storm has become more HP/messy in character; however, the mesocyclone has periodically intensified over the last couple of hours as well. ..Wendt.. 06/20/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LBF...CYS... LAT...LON 41720309 42130281 42810268 42960082 42589928 42239893 42129931 42240058 41810156 41610247 41720309 Read more

MD 1348 CONCERNING SEVERE THUNDERSTORM WATCH 438... FOR MUCH OF MASSACHUSETTS AND ADJACENT SOUTHERN NEW HAMPSHIRE
Mesoscale Discussion 1348 NWS Storm Prediction Center Norman OK 0535 PM CDT Thu Jun 20 2024 Areas affected...much of Massachusetts and adjacent southern New Hampshire Concerning...Severe Thunderstorm Watch 438... Valid 202235Z - 210030Z The severe weather threat for Severe Thunderstorm Watch 438 continues. SUMMARY...A developing cluster of thunderstorms may still pose increasing risk of producing damaging wind gusts while spreading southeastward across Massachusetts, perhaps including much of the Greater Boston vicinity, by 8-9 PM EDT. DISCUSSION...The boundary layer remains strongly heated (including surface temperatures near 90F) and characterized by seasonably high moisture content supportive of mixed-layer CAPE in excess of 2000 J/kg, along pre-frontal surface troughing inland of the southern New England coast. This is beneath prominent mid/upper ridging, but north of the ridge axis, where deep-layer westerly mean flow may be on the order of 15-20 kt. Aided by southerly low-level inflow of the unstable air, strengthening ongoing storms along a corridor southeast of Albany NY into the Keene NH vicinity may still undergo further intensification and upscale growth during the next hour or two. As this occurs, consolidating southeastward propagating outflow may be accompanied by increasing risk for potentially damaging wind gusts into the 00-01Z time frame. ..Kerr.. 06/20/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...GYX...BOX...ALY... LAT...LON 42427332 42777227 42807188 42827119 42117069 42037161 41987249 42077327 42427332 Read more

WW 0439 Status Updates
STATUS REPORT ON WW 439 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NNW DEN TO 40 E FCL TO 40 E CYS TO 20 SW BFF TO 15 WSW AIA TO 20 NNE AIA TO 30 ENE CDR TO 35 S PHP. ..WENDT..06/20/24 ATTN...WFO...BOU...CYS...LBF...UNR... STATUS REPORT FOR WS 439 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-115-123-210040- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN SEDGWICK WELD NEC007-033-049-069-105-123-161-210040- NE . NEBRASKA COUNTIES INCLUDED ARE BANNER CHEYENNE DEUEL GARDEN KIMBALL MORRILL SHERIDAN 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 439 SEVERE TSTM CO NE SD WY 201920Z - 210100Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 439 NWS Storm Prediction Center Norman OK 120 PM MDT Thu Jun 20 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeast Colorado Nebraska Panhandle Southwest South Dakota Southeast Wyoming * Effective this Thursday afternoon and evening from 120 PM until 700 PM MDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 75 mph possible Scattered large hail and isolated very large hail events to 2.5 inches in diameter possible A tornado or two possible SUMMARY...Thunderstorms will intensify this afternoon over southeast Wyoming and northeast Colorado and spread eastward through the early evening. Supercells capable of very large hail and damaging wind gusts are the main concern. An isolated tornado and/or landspout or two is also possible. The severe thunderstorm watch area is approximately along and 95 statute miles north and south of a line from 40 miles northwest of Cheyenne WY to 35 miles east northeast of Alliance NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU9). 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 438... AVIATION...A few severe thunderstorms with hail surface and aloft to 2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27030. ...Hart Read more

WW 0440 Status Updates
STATUS REPORT ON WW 440 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1349 ..WENDT..06/20/24 ATTN...WFO...LBF...UNR...FSD... STATUS REPORT FOR WS 440 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC005-009-015-017-031-071-075-089-091-103-113-115-117-149-171- 183-210040- NE . NEBRASKA COUNTIES INCLUDED ARE ARTHUR BLAINE BOYD BROWN CHERRY GARFIELD GRANT HOLT HOOKER KEYA PAHA LOGAN LOUP MCPHERSON ROCK THOMAS WHEELER SDC007-023-043-053-121-123-210040- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE BENNETT CHARLES MIX DOUGLAS GREGORY TODD TRIPP THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE Read more

WW 440 SEVERE TSTM NE SD 202155Z - 210500Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 440 NWS Storm Prediction Center Norman OK 455 PM CDT Thu Jun 20 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northern Nebraska Extreme southern South Dakota * Effective this Thursday afternoon from 455 PM until Midnight CDT. * Primary threats include... Scattered large hail and isolated very large hail events to 3.5 inches in diameter possible Scattered damaging wind gusts to 70 mph possible A tornado or two possible SUMMARY...An isolated supercell should persist along a warm front over the northern Sandhills, offering all severe hazards, including a localized tornado threat. In the broader picture, a clustering of severe thunderstorms in the Nebraska Panhandle should move into and across the watch later this evening, posing mainly a hail and severe-wind threat. Isolate severe hail also is possible with later development north of the front. The severe thunderstorm watch area is approximately along and 55 statute miles north and south of a line from 50 miles west of Mullen NE to 15 miles east northeast of Oneill 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. && OTHER WATCH INFORMATION...CONTINUE...WW 438...WW 439... AVIATION...A few severe thunderstorms with hail surface and aloft to 3.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean storm motion vector 26025. ...Edwards Read more