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ACUS11 KWNS 110553
SWOMCD
SPC MCD 110553=20
KYZ000-INZ000-110700-

Mesoscale Discussion 2008
NWS Storm Prediction Center Norman OK
1153 PM CST Fri Dec 10 2021

Areas affected...Portions of northern Kentucky.

Concerning...Tornado Watch 554...

Valid 110553Z - 110700Z

The severe weather threat for Tornado Watch 554 continues.

SUMMARY...A strong tornado threat continues across portions of
northern Kentucky.

DISCUSSION...Storm interference from new cells merging has finally
disrupted the persistent very strong low-level mesocyclone with the
long-lived supercell now entering Breckenridge County, Kentucky.
However, while this has weakened the intensity of the updraft and
low-level rotation, a strong tornado with around 50 to 55 knot Vrot
and a TDS is still present. Mid 60s dewpoints have advected ahead of
this storm and therefore, adequate instability remains for strong
tornado development given the 350 to 400 m2/s2 0-1 km SRH per the
KLVX VWP. Therefore, while circulations may be weaker and more
transient, a strong tornado threat persists.

..Bentley.. 12/11/2021

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!rQiO16MGZXxvf93aOBKV2DAYl16c5CEqy-pEaCuPS875Xh9Cfy8qBnE_zQCaBWGHA18nyAQB$=
for graphic product...

ATTN...WFO...LMK...PAH...

LAT...LON 37398619 37398677 37668687 38058635 38438536 38258495
37808508 37398619=20



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