Administrators NorthGeorgiaWX Posted January 15 Administrators Share Posted January 15 MD 0067 CONCERNING WINTER MIXED PRECIPITATION FOR ARKLATEX INTO PARTS OF THE MID SOUTH/TN VALLEY Mesoscale Discussion 0067 NWS Storm Prediction Center Norman OK 0745 AM CST Mon Jan 15 2024 Areas affected...ArkLaTex into parts of the Mid South/TN Valley Concerning...Winter mixed precipitation Valid 151345Z - 151745Z SUMMARY...An uptick in winter precipitation rates is possible through the morning. Moderate snow will be possible along the northern part of the precipitation shield, with sleet and localized freezing rain to the south. DISCUSSION...Some increase in coverage and intensity of winter precipitation has been noted on radar over the last 1-2 hours near/east of the ArkLaTex region, likely in response to an approaching mid/upper-level shortwave trough moving across the southern Plains. This area of precipitation will move east-northeastward toward the Mid South region, with downstream enhancement of precipitation possible later this morning toward the TN Valley region, within a persistent warm-advection regime. 12Z soundings from SHV and JAN depicted a notable warm layer from 900-750 mb, with LZK sounding also briefly rising above freezing around 750 mb. Dual pol data from KNQA indicate that the sleet/snow transition line runs roughly east-west, just to the south of the TN/MS border. There may be some tendency for the sleet/snow line to move slightly southward with time across northern MS, as ascent attendant to the approaching shortwave results in some midlevel cooling, while low-level warm advection gradually abates. However, some oscillations in precipitation type will continue to be possible near the transition zone. Where precipitation remains as or transitions to snow, moderate to briefly heavy precipitation rates may support localized rates near 1 inch/hour. Otherwise, occasionally moderate sleet will accompany the heavier precipitation, with freezing rain remaining possible along the southern fringe of the precipitation shield. ..Dean.. 01/15/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...HUN...MEG...JAN...LZK... LAT...LON 33069147 33029201 33639227 34209210 34409144 35149013 35558857 34998818 34138835 33069147 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.