SPC MD 238

MD 0238 CONCERNING SNOW SQUALL FOR CENTRAL TO NORTHERN WYOMING Mesoscale Discussion 0238 NWS Storm Prediction Center Norman OK 0743 PM CDT Sat Mar 14 2026 Areas affected...Central to northern Wyoming Concerning...Snow Squall Valid 150043Z - 150445Z SUMMARY...Rapidly falling temperatures, strong winds, and moderate snowfall behind a sharp cold front are yielding brief blizzard/snow-squall conditions across north-central Wyoming. These conditions may persist and spread into central and eastern Wyoming over the next few hours. DISCUSSION...Recent radar mosaics show a cold front rapidly pushing southward to the west of the Big Horn mountains in north-central WY. Surface observations behind the front have reported temperatures falling from the low 50s and upper 40s to below freezing within an hour. Concurrently, strong low-level cold advection (coupled with strong background gradient winds) is yielding frequent post-frontal wind gusts of 30-50 mph. This combination of rapidly falling temperatures, strong wind gusts, and the development of light to moderate snow showers within the frontal zone is yielding periods of visibility reductions between 1/2 to 1/4 mile based on regional ASOS/AWOS reports and web cams. The cold front is expected to continue pushing south/southeast over the next several hours as a cyclone continues to intensify to the east over the High Plains. Light to moderate snow showers will also spread to the southeast, which may result in a rapid onset of flash-freeze conditions and sudden visibility reductions under the heavier snow showers across central to east-central WY where temperatures are currently above freezing. ..Moore.. 03/15/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...UNR...CYS...BYZ...RIW... LAT...LON 45210878 45230814 45140781 43940477 43640444 43270442 42850457 42630489 42470530 42250587 42190655 42250729 42480785 42680832 42950870 43320906 44170971 44520984 44900976 45140936 45210878 Read more