85°F
Updated:
5/29/2023
7:16:34pm

SPC Severe Thunderstorm Watch 248
WW 248 SEVERE TSTM CO NE 292015Z - 300300ZURGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 248 NWS Storm Prediction Center Norman OK 315 PM CDT Mon May 29 2023 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeast Colorado Western and Central Nebraska * Effective this Monday afternoon and evening from 315 PM until 1000 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 SUMMARY...Scattered thunderstorms will continue to intensify across western Nebraska and spread across the watch area. The strongest cells will pose a risk of large hail and damaging wind gusts. The severe thunderstorm watch area is approximately along and 70 statute miles east and west of a line from 30 miles northeast of Ainsworth NE to 35 miles west of Imperial NE. 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 2 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27025. ...HartRead more
SPC Severe Thunderstorm Watch 248 Status Reports
WW 0248 Status UpdatesSTATUS REPORT ON WW 248 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..SPC..05/29/23 ATTN...WFO...BOU...LBF...CYS... STATUS REPORT FOR WS 248 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-095-115-300040- CO . COLORADO COUNTIES INCLUDED ARE LOGAN PHILLIPS SEDGWICK NEC005-009-015-017-029-031-033-041-049-063-069-071-075-085-089- 091-101-103-105-111-113-115-117-135-149-171-183-300040- NE . NEBRASKA COUNTIES INCLUDED ARE ARTHUR BLAINE BOYD BROWN CHASE CHERRY CHEYENNE CUSTER DEUEL FRONTIER GARDEN GARFIELD GRANT HAYES HOLT HOOKER KEITH KEYA PAHA KIMBALL LINCOLN LOGAN LOUP MCPHERSON PERKINS ROCK THOMAS WHEELER THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASERead more
SPC MD 896
MD 0896 CONCERNING SEVERE THUNDERSTORM WATCH 248... FOR CENTRAL PLAINSMesoscale Discussion 0896 NWS Storm Prediction Center Norman OK 0600 PM CDT Mon May 29 2023 Areas affected...Central Plains Concerning...Severe Thunderstorm Watch 248... Valid 292300Z - 300100Z The severe weather threat for Severe Thunderstorm Watch 248 continues. SUMMARY...Isolated severe thunderstorms will persist across ww248 this evening. Hail continues to be the main threat. DISCUSSION...Weak mid-level short-wave trough is currently evident in water-vapor imagery extending from eastern MT into extreme northwest NE. This feature will advance east this evening with the southern extent expected to influence convection that has developed across portions of central/northern NE. Latest diagnostic data suggests 25-30kt 500mb flow will overspread the northern half of ww248 where modest instability (2000 J/kg MLCAPE) currently resides ahead of a lee surface trough from near OGA to near ANW. Isolated robust convection has evolved along this corridor and several updrafts appear to have hail on the order of 1 inch at times. Hail remains the primary risk, though gusty winds are also possible. This activity will shift slowly east this evening as weak LLJ shifts into northeast NE-southwest MN after sunset. ..Darrow.. 05/29/2023 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...FSD...OAX...LBF...BOU...CYS... LAT...LON 40500361 42870093 42879818 40510093 40500361Read more
SPC May 29, 2023 2000 UTC Day 1 Convective Outlook
SPC 2000Z Day 1 OutlookDay 1 Convective Outlook RESENT 1 NWS Storm Prediction Center Norman OK 0413 PM CDT Mon May 29 2023 Valid 292000Z - 301200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE NEBRASKA VICINITY... ...SUMMARY... Isolated strong to severe thunderstorms capable of producing hail and damaging winds remain possible this afternoon and evening in parts of the central High Plains into Nebraska and South Dakota. ...Discussion... With current expectations in line with the ongoing outlook, no appreciable changes appear necessary with this update. For additional short-term information, please refer to MCD 893 and 894. ..Goss.. 05/29/2023 .PREV DISCUSSION... /ISSUED 1117 AM CDT Mon May 29 2023/ ...Northern and Central Plains... A weak upper trough remains in place over the northern and central Plains states today, providing relatively cool temperatures aloft and subtle large-scale forcing for ascent across the region. This will lead to scattered afternoon thunderstorm development, and at least some potential for hail and gusty winds. Forecast soundings throughout the region show moderately steep mid level lapse rates and just enough bulk shear for marginal organization. Therefore will maintain the MRGL risk for much of the region. One area that appears to have a slightly more favorable environment is along a weak surface confluence zone that extends from southwest to northeast NE. A consensus of CAM solutions suggest this narrow corridor will become convectively active by late afternoon. A 30-40 knot westerly mid-level jet will track across WY and nose into this region this evening, enhancing the deep-layer shear and further promoting a few severe storms, with a risk of large hail and damaging winds for a few hours. ...South TX... A weak upper trough is also tracking across TX today, where a very moist and moderately unstable air mass will develop this afternoon (MLCAPE around 2000 J/kg). Winds aloft are sufficiently strong to aid in organization to any robust thunderstorms that can form. Given the 12z CAM solutions of widely scattered convection, will add a MRGL risk area for afternoon/evening hail and wind risk.Read more
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