Administrators NorthGeorgiaWX Posted March 2 Administrators Share Posted March 2 MD 0182 CONCERNING SNOW SQUALL FOR SOUTHEAST IDAHO INTO FAR NORTHERN UTAH AND WESTERN WYOMING Mesoscale Discussion 0182 NWS Storm Prediction Center Norman OK 1126 AM CST Sat Mar 02 2024 Areas affected...Southeast Idaho into far northern Utah and western Wyoming Concerning...Snow Squall Valid 021726Z - 022130Z SUMMARY...A snow squall moving across southeast Idaho into western Wyoming and far northern Utah will bring periods of moderate to heavy snowfall rates and potentially near-blizzard conditions. DISCUSSION...Over the past 1-2 hours, a somewhat organized shallow convective band has developed along an eastward-pushing cold front across southeast ID into northwest UT. Although temperatures are currently hovering near or just above freezing over the region, surface observations have reported visibility reductions down to 1/4 mile with the passage of the front, likely due to a combination of moderate to heavy snowfall rates as well as 35-45 mph wind gusts. Multiple lightning flashes have also been observed with the past 30 minutes associated with a few of the deeper convective cores. The downstream environment appears supportive for maintenance, if not enhancement, of the convective band with SBCAPE values around 250 J/kg noted in recent mesoanalyses with further destabilization up to around 500 J/kg possible by mid-afternoon across west/southwest WY. Furthermore, low-level lapse rates on the order of 8-9 C/km are noted across northern UT to central WY based on modified observed soundings and mesoanalysis fields. Dynamically, strong ascent within the left-exit region of the approach mid-level jet should continue to promote broadscale ascent favorable for further deepening of the attendant surface low, which should foster a strong frontal surge through the afternoon. The result will be a continuation of moderate to heavy snowfall rates and periods of near-blizzard conditions along and behind the snow squall/cold front for the next several hours. ..Moore.. 03/02/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...RIW...TFX...SLC...PIH... LAT...LON 41831313 42431264 42911236 43561209 44261207 44521200 44721158 44731064 44661006 44480931 44100909 43620896 42910912 42370930 41840983 41571051 41551128 41601298 41831313 Read more View the full article Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.