Severe Storms

WW 0441 Status Updates
STATUS REPORT ON WW 441 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 60 SSW BCE TO 5 SSE BCE TO 40 WNW 4HV TO 25 NW PUC TO 40 SSE EVW TO 45 NNW VEL TO 20 SSW RWL. ..WENDT..06/21/24 ATTN...WFO...GJT...ABQ...SLC...RIW... STATUS REPORT FOR WS 441 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC029-033-045-067-077-081-083-085-091-103-111-113-220040- CO . COLORADO COUNTIES INCLUDED ARE DELTA DOLORES GARFIELD LA PLATA MESA MOFFAT MONTEZUMA MONTROSE OURAY RIO BLANCO SAN JUAN SAN MIGUEL NMC006-031-045-220040- NM . NEW MEXICO COUNTIES INCLUDED ARE CIBOLA MCKINLEY SAN JUAN UTC007-009-013-015-017-019-025-037-047-055-220040- UT . UTAH COUNTIES INCLUDED ARE Read more

WW 0441 Status Updates
STATUS REPORT ON WW 441 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 60 SSW BCE TO 5 SSE BCE TO 40 WNW 4HV TO 25 NW PUC TO 40 SSE EVW TO 45 NNW VEL TO 20 SSW RWL. ..WENDT..06/21/24 ATTN...WFO...GJT...ABQ...SLC...RIW... STATUS REPORT FOR WS 441 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC029-033-045-067-077-081-083-085-091-103-111-113-220040- CO . COLORADO COUNTIES INCLUDED ARE DELTA DOLORES GARFIELD LA PLATA MESA MOFFAT MONTEZUMA MONTROSE OURAY RIO BLANCO SAN JUAN SAN MIGUEL NMC006-031-045-220040- NM . NEW MEXICO COUNTIES INCLUDED ARE CIBOLA MCKINLEY SAN JUAN UTC007-009-013-015-017-019-025-037-047-055-220040- UT . UTAH COUNTIES INCLUDED ARE Read more

WW 441 SEVERE TSTM CO NM UT WY 211805Z - 220100Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 441 NWS Storm Prediction Center Norman OK 1205 PM MDT Fri Jun 21 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western Colorado Northwest New Mexico Central and Eastern Utah Southwest Wyoming * Effective this Friday afternoon and evening from 1205 PM until 700 PM MDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Scattered damaging wind gusts to 70 mph possible SUMMARY...Scattered thunderstorms will form across the watch area through the afternoon. The more intense cells will pose a risk of large hail and damaging winds. The severe thunderstorm watch area is approximately along and 75 statute miles east and west of a line from 80 miles north northeast of Vernal UT to 85 miles southwest of Farmington NM. 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. && 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 500. Mean storm motion vector 25035. ...Hart Read more

WW 0444 Status Updates
STATUS REPORT ON WW 444 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 S POU TO 30 WNW GON TO 25 ESE BDL TO 15 ESE EEN. ..SQUITIERI..06/21/24 ATTN...WFO...OKX...BOX...ALY... STATUS REPORT FOR WS 444 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS CTC001-007-009-011-015-212340- CT . CONNECTICUT COUNTIES INCLUDED ARE FAIRFIELD MIDDLESEX NEW HAVEN NEW LONDON WINDHAM MAC027-212340- MA . MASSACHUSETTS COUNTIES INCLUDED ARE WORCESTER RIC003-007-009-212340- RI . RHODE ISLAND COUNTIES INCLUDED ARE KENT PROVIDENCE WASHINGTON Read more

WW 0444 Status Updates
STATUS REPORT ON WW 444 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 S POU TO 30 WNW GON TO 25 ESE BDL TO 15 ESE EEN. ..SQUITIERI..06/21/24 ATTN...WFO...OKX...BOX...ALY... STATUS REPORT FOR WS 444 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS CTC001-007-009-011-015-212340- CT . CONNECTICUT COUNTIES INCLUDED ARE FAIRFIELD MIDDLESEX NEW HAVEN NEW LONDON WINDHAM MAC027-212340- MA . MASSACHUSETTS COUNTIES INCLUDED ARE WORCESTER RIC003-007-009-212340- RI . RHODE ISLAND COUNTIES INCLUDED ARE KENT PROVIDENCE WASHINGTON Read more

WW 0444 Status Updates
STATUS REPORT ON WW 444 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 S POU TO 30 WNW GON TO 25 ESE BDL TO 15 ESE EEN. ..SQUITIERI..06/21/24 ATTN...WFO...OKX...BOX...ALY... STATUS REPORT FOR WS 444 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS CTC001-007-009-011-015-212340- CT . CONNECTICUT COUNTIES INCLUDED ARE FAIRFIELD MIDDLESEX NEW HAVEN NEW LONDON WINDHAM MAC027-212340- MA . MASSACHUSETTS COUNTIES INCLUDED ARE WORCESTER RIC003-007-009-212340- RI . RHODE ISLAND COUNTIES INCLUDED ARE KENT PROVIDENCE WASHINGTON Read more

WW 0444 Status Updates
STATUS REPORT ON WW 444 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 S POU TO 30 WNW GON TO 25 ESE BDL TO 15 ESE EEN. ..SQUITIERI..06/21/24 ATTN...WFO...OKX...BOX...ALY... STATUS REPORT FOR WS 444 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS CTC001-007-009-011-015-212340- CT . CONNECTICUT COUNTIES INCLUDED ARE FAIRFIELD MIDDLESEX NEW HAVEN NEW LONDON WINDHAM MAC027-212340- MA . MASSACHUSETTS COUNTIES INCLUDED ARE WORCESTER RIC003-007-009-212340- RI . RHODE ISLAND COUNTIES INCLUDED ARE KENT PROVIDENCE WASHINGTON Read more

MD 1367 CONCERNING SEVERE THUNDERSTORM WATCH 445... FOR PARTS OF CENTRAL/EASTERN NE INTO SOUTHEAST SD...NORTHWEST IA...AND SOUTHWEST MN
Mesoscale Discussion 1367 NWS Storm Prediction Center Norman OK 0618 PM CDT Fri Jun 21 2024 Areas affected...Parts of central/eastern NE into southeast SD...northwest IA...and southwest MN Concerning...Severe Thunderstorm Watch 445... Valid 212318Z - 220045Z The severe weather threat for Severe Thunderstorm Watch 445 continues. SUMMARY...A loosely organized cluster of thunderstorms in central/northeast Nebraska may pose an isolated threat for severe wind in the short term. Other strong to severe thunderstorms in and near Severe Thunderstorm Watch 445 should have some hail/wind threat as well. DISCUSSION...Loosely organized convection is ongoing early this evening across central into northeast NE. Although this activity is occurring in a favorable thermodynamic and kinematic environment along/near a surface front, it has struggled to intensify/consolidate thus far. There still appears to be some chance for this cluster to become more organized this evening as a modest south-southwesterly low-level jet gradually strengthens over the central Plains and mid MO Valley. If further strengthening of this activity can occur, then severe/damaging winds up to 60-70 mph would likely be the main threat as these thunderstorms spread generally east-northeastward this evening. Other, more cellular thunderstorms are ongoing across southeast SD to the north of the front. Isolated hail and strong to locally severe winds may occur with this convection as well. The tornado threat remains less clear owing to messy storm modes. Still, some increase in low-level shear is anticipated this evening, and any persistent supercell along/near the surface front could pose some threat for a tornado. ..Gleason.. 06/21/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...FSD...OAX...GID...LBF... LAT...LON 40819975 42359986 42869975 43819761 44189632 44149570 43899533 43139531 42609560 40989847 40679941 40819975 Read more

MD 1368 CONCERNING SEVERE THUNDERSTORM WATCH 442... FOR WESTERN INTO CENTRAL MONTANA
Mesoscale Discussion 1368 NWS Storm Prediction Center Norman OK 0627 PM CDT Fri Jun 21 2024 Areas affected...Western into central Montana Concerning...Severe Thunderstorm Watch 442... Valid 212327Z - 220100Z The severe weather threat for Severe Thunderstorm Watch 442 continues. SUMMARY...The strongest convection will continue southeastward this evening. Additional development may occur. Large hail and isolated severe winds are the main hazards. DISCUSSION...A few widely scattered supercells are moving slowly southeastward into parts of central Montana. This motion is generally expected to continue into the evening, as this is where the moisture axis is situated. However, some early convection has left some outflow (cooler/modestly drier) that is evident in surface observations. It is unclear how this will impact the ongoing strong/severe storms as they encounter this mesoscale environment. Additional storms may develop within the terrain or perhaps along the southern edge of the outflow. It also appears possible that a storm or two could move southeastward out of Alberta. In general, large hail (conditionally up to 2 inches with a mature supercell) and isolated strong/severe gusts are the main threats into the evening. ..Wendt.. 06/21/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...BYZ...GGW...TFX... LAT...LON 47651240 48211276 48861316 49011287 49011105 48460940 47990849 46790767 46150848 46141001 47161204 47651240 Read more

MD 1365 CONCERNING SEVERE THUNDERSTORM WATCH 441... FOR SOUTHEASTERN UTAH AND FAR WESTERN COLORADO
Mesoscale Discussion 1365 NWS Storm Prediction Center Norman OK 0531 PM CDT Fri Jun 21 2024 Areas affected...Southeastern Utah and far western Colorado Concerning...Severe Thunderstorm Watch 441... Valid 212231Z - 220000Z The severe weather threat for Severe Thunderstorm Watch 441 continues. SUMMARY...Large to very-large hail and isolated strong/severe winds are most likely in parts of southeast Utah and adjacent western Colorado. DISCUSSION...Though the mid-level trough is continuing to lose amplitude with time, strong mid-level winds should continue to persist in the eastern Great Basin. At present, the most undisturbed airmass is roughly within southeastern Utah into adjacent far western Colorado. A supercell in San Juan County remains the strongest storm in the area and will be most capable of producing 2+ inch hail in the short term. Other storms in the Emery/Grand Counties vicinity may intensify and pose a threat for large hail as well. As storms move farther into the western slope, buoyancy will be decreased and storm intensity should wane. Elsewhere in WW 441, cloud cover/outflow has had some impact and storms have not been as intense in the last hour. However, isolated large hail and strong/severe winds could occur if any of that peripheral activity intensifies. ..Wendt.. 06/21/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...GJT...SLC... LAT...LON 37051005 38551101 38961081 39270981 39240893 39070864 37900822 37530832 37280846 37140896 37070953 37051005 Read more

MD 1366 CONCERNING SEVERE THUNDERSTORM WATCH 443... FOR PARTS OF FAR EASTERN WY...NORTHEAST CO...AND THE NE PANHANDLE
Mesoscale Discussion 1366 NWS Storm Prediction Center Norman OK 0540 PM CDT Fri Jun 21 2024 Areas affected...Parts of far eastern WY...northeast CO...and the NE Panhandle Concerning...Severe Thunderstorm Watch 443... Valid 212240Z - 220015Z The severe weather threat for Severe Thunderstorm Watch 443 continues. SUMMARY...The greatest threat for large hail, severe/damaging winds, and perhaps a tornado should spread eastward this evening over the Nebraska Panhandle and northeast Colorado. DISCUSSION...Weak low-level upslope flow is aiding widely spaced supercells across far eastern WY into northeast CO and the western NE Panhandle early this evening. Surface dewpoints and low-level moisture increase with eastward extent across these areas based on latest observations, with greater instability also being estimated by recent mesoanalysis. Strong deep-layer shear should continue to support a supercell mode in the short term, with large to isolated very large hail around 1.5-2.5 inches in diameter possible. Severe/damaging downdraft winds around 60-70 mph may also occur, especially where low-level lapse rates have become steepened with daytime heating. The southern supercell in northeast CO is the strongest storm across this region at the moment. It should have access to an unimpeded low-level moisture feed, and will likely maintain its intensity in the short term. A brief tornado may also occur this evening, particularly if supercells can be maintained farther east into the NE Panhandle where greater low-level moisture/lower LCLs are present. Based on latest observational trends, Severe Thunderstorm Watch 443 has been locally extended in area to include more of the western NE Panhandle and northeast CO. ..Gleason.. 06/21/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LBF...BOU...CYS... LAT...LON 40760432 41790439 42560416 42930351 42900230 41720146 40770131 40430165 40460339 40760432 Read more

WW 0443 Status Updates
STATUS REPORT ON WW 443 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 N RWL TO 40 NNW CPR TO 45 SSE SHR TO 35 N SHR. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1366 ..GLEASON..06/21/24 ATTN...WFO...BOU...BYZ...CYS...RIW...UNR... STATUS REPORT FOR WS 443 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC069-075-095-115-123-220040- CO . COLORADO COUNTIES INCLUDED ARE LARIMER LOGAN PHILLIPS SEDGWICK WELD MTC003-220040- MT . MONTANA COUNTIES INCLUDED ARE BIG HORN NEC007-013-033-045-105-123-157-165-220040- NE . NEBRASKA COUNTIES INCLUDED ARE BANNER BOX BUTTE CHEYENNE Read more

WW 443 SEVERE TSTM CO MT NE WY 211925Z - 220300Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 443 NWS Storm Prediction Center Norman OK 125 PM MDT Fri Jun 21 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northern Colorado South Central Montana Western Nebraska Panhandle Eastern Wyoming * Effective this Friday afternoon and evening from 125 PM until 900 PM MDT. * Primary threats include... Scattered damaging wind gusts to 70 mph likely Scattered large hail and isolated very large hail events to 2 inches in diameter possible A tornado or two possible SUMMARY...Scattered thunderstorms will continue to intensify this afternoon across eastern Wyoming and adjacent areas, with a few supercell storms possible. Large hail is the main threat, with a few instances of damaging winds also possible. The severe thunderstorm watch area is approximately along and 65 statute miles east and west of a line from 25 miles north northeast of Sheridan WY to 30 miles south of Cheyenne WY. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU3). 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 441...WW 442... 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 500. Mean storm motion vector 24035. ...Hart Read more

WW 0445 Status Updates
STATUS REPORT ON WW 445 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1367 ..GLEASON..06/21/24 ATTN...WFO...FSD...OAX...LBF...GID...GLD... STATUS REPORT FOR WS 445 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC035-041-059-119-141-143-149-167-193-220040- IA . IOWA COUNTIES INCLUDED ARE CHEROKEE CLAY DICKINSON LYON O'BRIEN OSCEOLA PLYMOUTH SIOUX WOODBURY MNC063-105-133-220040- MN . MINNESOTA COUNTIES INCLUDED ARE JACKSON NOBLES ROCK NEC003-009-011-015-017-019-027-041-043-047-051-057-063-071-073- 077-079-085-087-089-093-107-111-113-115-117-119-121-125-137-139- 141-145-149-163-167-171-173-175-179-183-220040- NE . NEBRASKA COUNTIES INCLUDED ARE Read more

WW 445 SEVERE TSTM IA MN NE SD 212030Z - 220400Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 445 NWS Storm Prediction Center Norman OK 330 PM CDT Fri Jun 21 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northwest Iowa Southwest Minnesota Central and Eastern Nebraska Southeast South Dakota * Effective this Friday afternoon and evening from 330 PM until 1100 PM CDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Scattered damaging wind gusts to 70 mph possible A tornado or two possible SUMMARY...Thunderstorms are expected to develop this afternoon along a boundary extending from southwest to northeast Nebraska and into northwest Iowa. A few supercells are possible, capable of large hail and damaging wind gusts. A tornado or two could also occur. The severe thunderstorm watch area is approximately along and 50 statute miles north and south of a line from 40 miles southwest of North Platte NE to 25 miles north northeast of Spencer IA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU5). 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 441...WW 442...WW 443...WW 444... 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 500. Mean storm motion vector 25025. ...Hart Read more

WW 0442 Status Updates
STATUS REPORT ON WW 442 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1368 ..WENDT..06/21/24 ATTN...WFO...TFX...BYZ...GGW... STATUS REPORT FOR WS 442 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MTC005-013-015-027-035-037-041-045-051-059-065-069-073-099-101- 107-220040- MT . MONTANA COUNTIES INCLUDED ARE BLAINE CASCADE CHOUTEAU FERGUS GLACIER GOLDEN VALLEY HILL JUDITH BASIN LIBERTY MEAGHER MUSSELSHELL PETROLEUM PONDERA TETON TOOLE WHEATLAND 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 442 SEVERE TSTM MT 211840Z - 220200Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 442 NWS Storm Prediction Center Norman OK 1240 PM MDT Fri Jun 21 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central Montana * Effective this Friday afternoon and evening from 1240 PM until 800 PM MDT. * Primary threats include... Scattered large hail likely with isolated very large hail events to 3 inches in diameter possible Scattered damaging wind gusts to 70 mph possible A tornado or two possible SUMMARY...Isolated supercell thunderstorms will develop and track across the watch area this afternoon and evening, capable of very large hail and damaging wind gusts. An isolated tornado or two is also possible. The severe thunderstorm watch area is approximately along and 65 statute miles east and west of a line from 65 miles west northwest of Havre MT to 30 miles east southeast of Harlowton MT. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU2). 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 441... AVIATION...A few severe thunderstorms with hail surface and aloft to 3 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27035. ...Hart Read more

WW 0441 Status Updates
STATUS REPORT ON WW 441 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 60 SSW BCE TO 5 SSE BCE TO 40 WNW 4HV TO 25 NW PUC TO 40 SSE EVW TO 45 NNW VEL TO 20 SSW RWL. ..WENDT..06/21/24 ATTN...WFO...GJT...ABQ...SLC...RIW... STATUS REPORT FOR WS 441 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC029-033-045-067-077-081-083-085-091-103-111-113-220040- CO . COLORADO COUNTIES INCLUDED ARE DELTA DOLORES GARFIELD LA PLATA MESA MOFFAT MONTEZUMA MONTROSE OURAY RIO BLANCO SAN JUAN SAN MIGUEL NMC006-031-045-220040- NM . NEW MEXICO COUNTIES INCLUDED ARE CIBOLA MCKINLEY SAN JUAN UTC007-009-013-015-017-019-025-037-047-055-220040- UT . UTAH COUNTIES INCLUDED ARE Read more

WW 441 SEVERE TSTM CO NM UT WY 211805Z - 220100Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 441 NWS Storm Prediction Center Norman OK 1205 PM MDT Fri Jun 21 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western Colorado Northwest New Mexico Central and Eastern Utah Southwest Wyoming * Effective this Friday afternoon and evening from 1205 PM until 700 PM MDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Scattered damaging wind gusts to 70 mph possible SUMMARY...Scattered thunderstorms will form across the watch area through the afternoon. The more intense cells will pose a risk of large hail and damaging winds. The severe thunderstorm watch area is approximately along and 75 statute miles east and west of a line from 80 miles north northeast of Vernal UT to 85 miles southwest of Farmington NM. 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. && 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 500. Mean storm motion vector 25035. ...Hart Read more

MD 1363 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR SOUTHEASTERN ARIZONA
Mesoscale Discussion 1363 NWS Storm Prediction Center Norman OK 0453 PM CDT Fri Jun 21 2024 Areas affected...Southeastern Arizona Concerning...Severe potential...Watch unlikely Valid 212153Z - 212330Z Probability of Watch Issuance...20 percent SUMMARY...Isolated to widely scattered strong to severe winds are possible in parts of southeastern Arizona. DISCUSSION...A tropical moisture plume within the Southwest (PWAT values greater than 1 in. per GPS TPW in southeast Arizona) continues to foster isolated to widely scattered thunderstorms. Shear is relatively weak per regional VAD data, and strong heating has been somewhat muted by high-level cloud cover. Even so, temperature-dewpoint spreads are sufficient to support a few strong to severe wind gusts. With higher than average moisture content, enough storm coverage may exist for a cluster to two to develop. Should this occur, a locally greater wind threat would exist with those clusters. Storm coverage into the western portions of the Phoenix metro is fairly uncertain, but outflow could try and push westward into a much more well-mixed boundary layer (temperatures in excess of 110 F) and produce strong winds. ..Wendt/Edwards.. 06/21/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...TWC...FGZ...PSR... LAT...LON 31641073 32521129 33181163 33771178 34111143 34141078 33800978 33380920 32300911 31530913 31330986 31351053 31641073 Read more