Severe Storms

MD 1649 CONCERNING SEVERE THUNDERSTORM WATCH 507... FOR WEST CENTRAL THROUGH NORTHEASTERN MISSOURI
Mesoscale Discussion 1649 NWS Storm Prediction Center Norman OK 0647 PM CDT Fri Jul 11 2025 Areas affected...west central through northeastern Missouri Concerning...Severe Thunderstorm Watch 507... Valid 112347Z - 120045Z The severe weather threat for Severe Thunderstorm Watch 507 continues. SUMMARY...A further increase in thunderstorm development and intensity still appears possible through 8-10 PM CDT, accompanied by at least some risk for damaging wind gusts. It is not clear that an additional severe weather watch will be needed, but Severe Thunderstorm Watch 507 probably will be maintained until current 10 PM CDT scheduled expiration. DISCUSSION...The most vigorous thunderstorm development, to this point, has remained well to the north of the region, associated with forcing for ascent with a lead perturbation within larger-scale weak mid-level troughing accelerating northeast of the lower Missouri Valley. While one coincident surface wave, along a low-level baroclinic zone strengthened by differential surface heating, migrates into southern Wisconsin/northern Illinois, modestly deep surface troughing lags to the southwest and is being overtaken by an initial weak cold front across northwestern Missouri into northeastern Kansas. Within this surface troughing, a seasonably warm and moist boundary-layer remains characterized by sizable CAPE in the presence of modestly steep lapse rates, as a trailing mid-level perturbation digs into the lower Missouri Valley. Although deep-layer shear becomes more modest to the south/southwest of the Iowa/Missouri state border, it is still possible that increasing forcing for ascent could support further upscale growth of ongoing convective development now northwest of Chillicothe MO into western portions of the Greater Kansas City vicinity. As this occurs and spreads eastward during the next few hours, gradual organization is possible, perhaps accompanied by at least some increase in potential for strong to severe surface gusts. ..Kerr.. 07/11/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LSX...DVN...DMX...EAX... LAT...LON 39849419 40619282 39919159 38409384 38849502 39849419 MOST PROBABLE PEAK WIND GUST...55-70 MPH Read more

MD 1648 CONCERNING TORNADO WATCH 505...508... FOR SOUTHERN WISCONSIN AND NORTHERN ILLINOIS
Mesoscale Discussion 1648 NWS Storm Prediction Center Norman OK 0557 PM CDT Fri Jul 11 2025 Areas affected...southern Wisconsin and northern Illinois Concerning...Tornado Watch 505...508... Valid 112257Z - 120100Z The severe weather threat for Tornado Watch 505, 508 continues. SUMMARY...An organized cluster of storms likely will continue to pose a risk for strong to severe surface gusts, and perhaps an additional brief tornado or two, across southern Wisconsin and northern Illinois during the next couple of hours, reaching the Greater Milwaukee into portions of the Greater Chicago metro areas by 8 PM CDT. DISCUSSION...The evolving convective system has become better organized over the past couple of hours, with at least one developing meso-beta scale cyclonic vortex (now near Dubuque IA) becoming increasingly prominent. The apex of the southward trailing bow echo structure in radar reflectivities is propagating east-northeastward around 45 kt, and, at this continued motion, will reach the southwestern shores of Lake Michigan near the Greater Milwaukee area by 01Z. In the presence of 20-30 kt west-southwesterly mean ambient flow, moderately strong easterly updraft inflow of seasonably moist air characterized by CAPE in excess of 1500 J/kg seems likely to maintain current convective intensities at least to the the southwestern shores of Lake Michigan. As long as this continues, westerly rear inflow probably will remain sufficiently strong to contribute to strong to severe surface gusts in downdrafts. ..Kerr.. 07/11/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LOT...MKX...DVN... LAT...LON 43208980 43548869 43568796 43178750 42218756 41788778 41678926 41768977 42488951 42969002 43208980 MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH MOST PROBABLE PEAK WIND GUST...65-80 MPH MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN Read more

WW 0510 Status Updates
STATUS FOR WATCH 0510 HAS NOT BEEN ISSUED YET Read more

WW 510 SEVERE TSTM CO NM OK TX 112310Z - 120600Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 510 NWS Storm Prediction Center Norman OK 610 PM CDT Fri Jul 11 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southeast Colorado Eastern New Mexico The Oklahoma Panhandle The Western Texas Panhandle * Effective this Friday night and Saturday morning from 610 PM until 100 AM CDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 75 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Slow-moving supercells should pose an isolated threat for severe hail generally up to 1-1.5 inches in diameter this evening across eastern New Mexico and southeast Colorado. With time, a bowing cluster of thunderstorms may develop and pose a greater threat for scattered severe/damaging winds up to 60-75 mph across parts of the Oklahoma/Texas Panhandles. The severe thunderstorm watch area is approximately along and 85 statute miles east and west of a line from 45 miles east northeast of Trinidad CO to 45 miles southeast of Tucumcari NM. 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 505...WW 506...WW 507...WW 508...WW 509... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 30020. ...Gleason Read more

No Mesoscale Discussions are in effect as of Fri Jul 11 22:33:05 UTC 2025.

MD 1646 CONCERNING TORNADO WATCH 505... FOR SOUTHERN/EASTERN IA INTO SOUTHWEST WI...NORTHWEST IL...FAR NORTHERN MO
Mesoscale Discussion 1646 NWS Storm Prediction Center Norman OK 0353 PM CDT Fri Jul 11 2025 Areas affected...Southern/eastern IA into southwest WI...northwest IL...far northern MO Concerning...Tornado Watch 505... Valid 112053Z - 112230Z The severe weather threat for Tornado Watch 505 continues. SUMMARY...Damaging wind and localized tornado potential will continue through late afternoon. Eventual downstream watch issuance is possible. DISCUSSION...As of 2045 UTC, a small bowing segment appears to be developing across east-central IA, with the KDVN/KDMX radars depicting a compact but intensifying velocity signature across Benton and Linn Counties. This bowing segment will continue to move eastward along a baroclinic zone and could produce a swath of damaging winds, along with some potential for a line-embedded tornado and isolated hail. Elsewhere, multiple discrete cells are ongoing from southwest WI into parts of southern IA. While deep-layer shear is only marginally favorable for supercells, a favorable overlap of low-level instability and modestly enhanced surface vorticity could support a tornado threat with these cells, especially in the vicinity of the primary baroclinic zone. The stronger cells will also be capable of producing isolated hail. Some severe threat may eventually spread into a larger portion of central/northern IL and southern WI, and downstream watch issuance is possible depending on short-term trends with ongoing convection. ..Dean/Mosier.. 07/11/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LOT...ILX...MKX...DVN...ARX...DMX...EAX... LAT...LON 41289472 41569262 42639194 42889041 42888944 42428875 41718893 41188986 40369129 40309263 40309402 40329457 40459468 40799456 41289472 MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH MOST PROBABLE PEAK WIND GUST...65-80 MPH MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN Read more

MD 1647 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR SOUTHEAST COLORADO INTO EASTERN NEW MEXICO AND THE WESTERN OKLAHOMA/TEXAS PANHANDLES.
Mesoscale Discussion 1647 NWS Storm Prediction Center Norman OK 0354 PM CDT Fri Jul 11 2025 Areas affected...southeast Colorado into eastern New Mexico and the western Oklahoma/Texas Panhandles. Concerning...Severe potential...Watch possible Valid 112054Z - 112230Z Probability of Watch Issuance...60 percent SUMMARY...Scattered storms developing off the Raton Mesa and along the stalled front will likely pose a risk for damaging gusts and isolated hail into this evening. DISCUSSION...As of 2050 UTC, regional radar and satellite imagery showed initial thunderstorms intensifying across the higher terrain of southern CO and eastern NM. Driven largely by weak upslope flow and diurnal heating, gradual storm intensification is expected over the next couple of hours. Warm surface temperatures and adequate moisture are supporting moderate buoyancy amid mid-level lapse rates of 7-8 C/km. This should support stronger updrafts as convection develops off the higher terrain through the remainder of the afternoon. Vertical shear is not overly strong (30-40 kt), but sufficient for a few organized storms including supercells or persistent multi-cell clusters. With time, scattered to widespread thunderstorms will develop and spread eastward into the TX/K Panhandles. Given the degree of buoyancy and potential for supercells, an initial risk for hail is expected. A deeply mixed boundary layer and consolidating outflow should also favor a damaging wind risk, especially with some upscale growth later this evening. Lingering inhibition and the limited forcing for ascent suggests the overall convective evolution may be somewhat slow. CAM guidance agrees, showing storm organization occurring as storm coverage increases this evening. However, the environment is expected to support an increasing severe risk into this evening. Some uncertainty exists regarding the timing, but a severe thunderstorm watch appears probable this afternoon/evening. ..Lyons/Mosier.. 07/11/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...DDC...LUB...AMA...PUB...ABQ... LAT...LON 37240521 37590458 37750344 36910139 35790127 34630175 34140324 33880396 34250504 37240521 MOST PROBABLE PEAK WIND GUST...65-80 MPH MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN Read more

MD 1645 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR PARTS OF SOUTHEAST WYOMING...WESTERN NEBRASKA AND NORTHERN COLORADO
Mesoscale Discussion 1645 NWS Storm Prediction Center Norman OK 0336 PM CDT Fri Jul 11 2025 Areas affected...parts of southeast Wyoming...western Nebraska and northern Colorado Concerning...Severe potential...Watch possible Valid 112036Z - 112230Z Probability of Watch Issuance...60 percent SUMMARY...Developing storms will likely pose a risk for hail and damaging gusts into this evening. A WW is possible. DISCUSSION...Initial high-based storms developing/occurring across the higher-terrain of southeastern WY and northern CO are showing signs of intensification. Located within a post-frontal upslope flow regime, inhibition has been slow to diminish this afternoon. However, strong heating and weak ascent form several perturbations in the westerly flow aloft will continue to support gradual storm development/maturation. MLCAPE of 500-1000 J/kg will support strong updrafts as storms move off the higher terrain and develop along the front across western NE. 30-40 kt of deep-layer shear should allow for some organization into supercells and longer-lived clusters. With moderately steep lapse rates in place, hail is expected, along with isolated severe gusts. Initial storm organization may be slowed somewhat by lingering inhibition and relatively weak forcing. Storms remaining close to the terrain should gradually intensify before moving into the lower elevations later this afternoon/early this evening. As convection continues to increase in coverage and intensity, a severe watch may be needed. ..Lyons/Mosier.. 07/11/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LBF...GLD...PUB...BOU...CYS... LAT...LON 39450160 39360215 39130295 39010388 38890475 39210550 39950593 41550639 41700477 41470282 41140177 39450160 MOST PROBABLE PEAK WIND GUST...65-80 MPH MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN Read more

WW 0507 Status Updates
STATUS REPORT ON WW 507 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..KERR..07/11/25 ATTN...WFO...LSX...EAX... STATUS REPORT FOR WS 507 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ILC001-009-149-112340- IL . ILLINOIS COUNTIES INCLUDED ARE ADAMS BROWN PIKE KSC091-103-121-209-112340- KS . KANSAS COUNTIES INCLUDED ARE JOHNSON LEAVENWORTH MIAMI WYANDOTTE MOC001-003-007-019-021-025-033-037-041-047-049-053-061-063-079- 089-095-101-103-107-111-115-117-121-127-137-159-163-165-173-175- 177-195-205-211-112340- MO . MISSOURI COUNTIES INCLUDED ARE ADAIR ANDREW AUDRAIN BOONE BUCHANAN CALDWELL Read more

WW 0507 Status Updates
STATUS REPORT ON WW 507 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..KERR..07/11/25 ATTN...WFO...LSX...EAX... STATUS REPORT FOR WS 507 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ILC001-009-149-112340- IL . ILLINOIS COUNTIES INCLUDED ARE ADAMS BROWN PIKE KSC091-103-121-209-112340- KS . KANSAS COUNTIES INCLUDED ARE JOHNSON LEAVENWORTH MIAMI WYANDOTTE MOC001-003-007-019-021-025-033-037-041-047-049-053-061-063-079- 089-095-101-103-107-111-115-117-121-127-137-159-163-165-173-175- 177-195-205-211-112340- MO . MISSOURI COUNTIES INCLUDED ARE ADAIR ANDREW AUDRAIN BOONE BUCHANAN CALDWELL Read more

WW 507 SEVERE TSTM IL KS MO 111920Z - 120300Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 507 NWS Storm Prediction Center Norman OK 220 PM CDT Fri Jul 11 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Far West-Central Illinois Extreme Northeast Kansas Northern Missouri * Effective this Friday afternoon and evening from 220 PM until 1000 PM CDT. * Primary threats include... Scattered damaging wind gusts to 70 mph likely Scattered large hail events to 1.5 inches in diameter possible SUMMARY...Thunderstorm coverage and intensity is forecast to increase from northeast KS across northern MO and into west-central IL this afternoon. Strong to extreme buoyancy is in place across the region, supporting the potential for robust updrafts. Vertical shear is weak, which could limit storm organization, but the intense updrafts and related water loading could result in numerous strong downbursts. A few instances of hail could occur as well, but warm temperatures should preclude a greater hail threat. The severe thunderstorm watch area is approximately along and 45 statute miles north and south of a line from Leavenworth KS to 35 miles east southeast of Quincy IL. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). 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 505...WW 506... 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 500. Mean storm motion vector 24035. ...Mosier Read more

WW 0505 Status Updates
STATUS REPORT ON WW 505 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 E SDA TO 30 SSE CID TO 10 WSW DBQ. ..KERR..07/11/25 ATTN...WFO...DMX...DVN...EAX... STATUS REPORT FOR WT 505 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ILC011-015-067-071-073-085-109-131-155-161-177-187-195-112340- IL . ILLINOIS COUNTIES INCLUDED ARE BUREAU CARROLL HANCOCK HENDERSON HENRY JO DAVIESS MCDONOUGH MERCER PUTNAM ROCK ISLAND STEPHENSON WARREN WHITESIDE IAC007-039-045-051-053-057-087-097-101-103-107-111-115-117-123- 135-139-159-163-173-177-179-183-185-112340- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE CLARKE CLINTON DAVIS DECATUR DES MOINES HENRY JACKSON JEFFERSON JOHNSON KEOKUK LEE LOUISA LUCAS MAHASKA MONROE MUSCATINE RINGGOLD SCOTT TAYLOR VAN BUREN Read more

WW 0505 Status Updates
STATUS REPORT ON WW 505 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 E SDA TO 30 SSE CID TO 10 WSW DBQ. ..KERR..07/11/25 ATTN...WFO...DMX...DVN...EAX... STATUS REPORT FOR WT 505 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ILC011-015-067-071-073-085-109-131-155-161-177-187-195-112340- IL . ILLINOIS COUNTIES INCLUDED ARE BUREAU CARROLL HANCOCK HENDERSON HENRY JO DAVIESS MCDONOUGH MERCER PUTNAM ROCK ISLAND STEPHENSON WARREN WHITESIDE IAC007-039-045-051-053-057-087-097-101-103-107-111-115-117-123- 135-139-159-163-173-177-179-183-185-112340- IA . IOWA COUNTIES INCLUDED ARE APPANOOSE CLARKE CLINTON DAVIS DECATUR DES MOINES HENRY JACKSON JEFFERSON JOHNSON KEOKUK LEE LOUISA LUCAS MAHASKA MONROE MUSCATINE RINGGOLD SCOTT TAYLOR VAN BUREN Read more

WW 505 TORNADO IA IL MO 111755Z - 120100Z
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 505 NWS Storm Prediction Center Norman OK 1255 PM CDT Fri Jul 11 2025 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of South-Central and Southeast Iowa Far Northwest Illinois Far Northern Missouri * Effective this Friday afternoon and evening from 1255 PM until 800 PM CDT. * Primary threats include... A few tornadoes likely Scattered damaging wind gusts to 70 mph likely Scattered large hail events to 1.5 inches in diameter possible SUMMARY...Thunderstorm development is anticipated this afternoon in close proximity to a surface low over far southwest IA, and associated warm front that extends eastward across southern IA into far northwest IL. Ample low-level moisture is supporting strong buoyancy, and the potential for robust updrafts. Supercells capable of all severe hazards, including tornadoes, are possible within this environment. The tornado watch area is approximately along and 40 statute miles north and south of a line from 45 miles west northwest of Lamoni IA to 30 miles northeast of Moline IL. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU5). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and 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. && AVIATION...Tornadoes and 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 500. Mean storm motion vector 24035. ...Mosier Read more

WW 0506 Status Updates
STATUS REPORT ON WW 506 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 W DBQ TO 20 WSW LNR TO 30 SE VOK. ..KERR..07/11/25 ATTN...WFO...DMX...DVN...ARX...MKX... STATUS REPORT FOR WS 506 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC061-112340- IA . IOWA COUNTIES INCLUDED ARE DUBUQUE WIC043-111-112340- WI . WISCONSIN COUNTIES INCLUDED ARE GRANT SAUK 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 0506 Status Updates
STATUS REPORT ON WW 506 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 W DBQ TO 20 WSW LNR TO 30 SE VOK. ..KERR..07/11/25 ATTN...WFO...DMX...DVN...ARX...MKX... STATUS REPORT FOR WS 506 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS IAC061-112340- IA . IOWA COUNTIES INCLUDED ARE DUBUQUE WIC043-111-112340- WI . WISCONSIN COUNTIES INCLUDED ARE GRANT SAUK 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 506 SEVERE TSTM IA WI 111815Z - 120200Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 506 NWS Storm Prediction Center Norman OK 115 PM CDT Fri Jul 11 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of North-Central and Northeast Iowa Far Southwest Wisconsin * Effective this Friday afternoon and evening from 115 PM until 900 PM CDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Thunderstorm intensity and coverage is expected to increase over the next several hours from north-central/northeast IA into far southwest WI. Environmental conditions support the potential for some strong to severe storms capable of large hail and/or damaging gusts. The severe thunderstorm watch area is approximately along and 40 statute miles north and south of a line from 65 miles west of Waterloo IA to 20 miles east southeast of Lonerock WI. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU6). 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 505... 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 500. Mean storm motion vector 27035. ...Mosier Read more

WW 0509 Status Updates
STATUS FOR WATCH 0509 HAS NOT BEEN ISSUED YET Read more

WW 0509 Status Updates
STATUS FOR WATCH 0509 HAS NOT BEEN ISSUED YET Read more

WW 509 SEVERE TSTM CO KS NE WY 112220Z - 120500Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 509 NWS Storm Prediction Center Norman OK 420 PM MDT Fri Jul 11 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of North-Central and Northeast Colorado Far Northwest Kansas Southwest Nebraska and the Nebraska Panhandle Southeast Wyoming * Effective this Friday afternoon and evening from 420 PM until 1100 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 inches in diameter possible SUMMARY...Scattered strong to severe thunderstorms should spread generally east-southeastward this evening while posing a threat for both large hail and severe/damaging winds. The largest hail may reach up to 1-2 inches in diameter, while peak gusts of 65-75 mph appear possible if a cluster of thunderstorms can form later this evening. The severe thunderstorm watch area is approximately along and 60 statute miles north and south of a line from 30 miles west southwest of Cheyenne WY to 15 miles northeast of Mccook 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 505...WW 506...WW 507...WW 508... AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 30025. ...Gleason Read more