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Mesoscale Discussion 2207 |
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Mesoscale Discussion 2207
NWS Storm Prediction Center Norman OK
1239 PM CST Mon Dec 16 2019
Areas affected...northern Rapides Parish in central Louisiana
Concerning...Tornado Watch 700...
Valid 161839Z - 161915Z
The severe weather threat for Tornado Watch 700 continues.
SUMMARY...Based on recent radar and environmental data, a strong to
potentially intense tornado with potential peak winds of 110 to 155
mph (EF1-EF3) is likely ongoing and tracking towards Alexandria, LA.
DISCUSSION...Recent radar signatures from KPOE as of 1832z reveal a
long track tornadic supercell characterized by a 0.5 degree
rotational velocity between 61 and 70 kt. A tornadic debris
signature has also been noted on recent radar scans. These
signatures are occurring in an environment characterized by STP
between 4 and 5. Previous signatures within similar environments
produced tornado-damage-estimated wind speeds from 110 to 155 mph
and confidence is high for likely strong to potentially intense
tornado. A tornado is ongoing and may continue based on the
rotational velocity continuity and the storm moving within a
favorable downstream environment.
..Nauslar/Grams.. 12/16/2019
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...LCH...SHV...
LAT...LON 31259270 31399260 31459237 31409232 31319235 31199256
31189264 31259270
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