MD 0027 CONCERNING TORNADO WATCH 7… FOR WESTERN TN…FAR EASTERN AR…NORTHWEST MS
Mesoscale Discussion 0027 NWS Storm Prediction Center Norman OK 0352 AM CST Sat Jan 11 2020 Areas affected...Western TN...Far Eastern AR...Northwest MS Concerning...Tornado Watch 7... Valid 110952Z - 111115Z The severe weather threat for Tornado Watch 7 continues. SUMMARY...Conditions remain supportive of organized thunderstorms capable of strong wind gusts and embedded QLCS tornadoes. A new watch will likely be needed downstream by 11Z across northern MS and western TN. DISCUSSION...Storms within the portion of the convective line affected far eastern AR, western TN, and northwestern MS appear to be a bit stronger and better organized. This is evidenced by the forward surges and higher storm tops recently observed. The already strong vertical shear over the region has increased over the past 2 hours. Observations from the NQA VAD show 0-3 km storm-relative helicity increased from around 700 m2/s2 two hours ago to over 950 m2/s2 on the 0924Z observation. Thermodynamic conditions have remained fairly constant, with temperatures in the upper 60s/low 70s, dewpoints in the mid 60s, and MLCAPE around 500-1000 J/kg. These conditions remain supportive of organized thunderstorms capable of strong wind gusts and embedded QLCS tornadoes. ..Mosier.. 01/11/2020 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MEG...JAN...LZK... LAT...LON 35449055 36298974 35798840 33488980 33289175 35449055
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