Administrators NorthGeorgiaWX Posted March 2 Administrators Posted March 2 MD 0184 CONCERNING HEAVY SNOW FOR PORTIONS OF THE HIGHER TERRAIN OF THE CENTRAL SIERRA NEVADA Mesoscale Discussion 0184 NWS Storm Prediction Center Norman OK 0316 PM CST Sat Mar 02 2024 Areas affected...portions of the higher terrain of the central Sierra Nevada Concerning...Heavy snow Valid 022116Z - 030215Z SUMMARY...A gradual increase in heavy snowfall rates is anticipated heading into the late afternoon/evening hours within the higher terrain of the central Sierra Nevada range in California. Snowfall rates of 2-3 inches/hour appear possible. DISCUSSION...Surface observations and regional radar composites have recently shown a temporary lull in precipitation/snowfall rates along the higher terrain of the Sierra Nevada over the past hour. However, recent RAP upper air analyses and GOES water-vapor imagery indicate that the nose of a 100+ knot mid-level jet is beginning to push into central CA. Broadscale ascent within the left-exit region of this wave, combined with an increase in orographic ascent along the Sierra Nevada owing to strengthening mid-level winds, should promote a gradual uptick in precipitation across central CA late this afternoon into the evening hours. Recent high-res guidance indicates multiple rounds of heavier precipitation bands moving into the region during the 23-03 UTC time frame as ascent increases. Both deterministic and probabilistic guidance suggest that the potential for snowfall rates between 2-3 inches/hour will increase during this period for higher elevations (generally above 5 kft) where temperatures are below freezing. ..Moore.. 03/02/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...VEF...REV...HNX...STO... LAT...LON 36741877 37071933 38652051 38872057 39072040 39112017 38952003 38631982 38221940 37911914 37651895 37481864 37341848 37171837 36971833 36771829 36681841 36661854 36741877 Read more View the full article Quote
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