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Severe WX December 16-17 2019 Severe Weather Outbreak

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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.

DISCUSSION...Recent radar signatures from KPOE and KLCH as of 17:31z
reveal an intense supercell characterized by a 0.5-0.9 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.
 

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