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Mesoscale Discussion 420 |
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Mesoscale Discussion 0420
NWS Storm Prediction Center Norman OK
0703 PM CDT Tue Apr 05 2022
Areas affected...Coastal Carolinas
Concerning...Tornado Watch 98...99...
Valid 060003Z - 060200Z
The severe weather threat for Tornado Watch 98, 99 continues.
SUMMARY...The threat for damaging winds and a few tornadoes will
continue for the next couple of hours before gradually diminishing
through the late evening as the squall line pushes offshore.
DISCUSSION...Latest regional radar imagery from the eastern
Carolinas continues to show discrete to semi-discrete cells ahead of
an approaching squall line. Several of the more tornadic supercells
have begun to interact with the line, yielding messier storm modes.
This trend will continue as the line moves towards the Carolina
coast over the next few hours. Until this occurs, a supportive
kinematic environment featuring around 300 m2/s2 0-1 km SRH ahead of
the line will continue to support a tornado threat with both
discrete cells ahead of the line and embedded circulations. The
tornado potential may be maximize in the over the next couple of
hours along and just north of a weak warm front noted near the SC/NC
border where surface winds are backed to the east/southeast and
low-level helicity is likely enhanced (as depicted well by latest
KLTX VWP observations). Storms will likely continue to the
east-central NC coast over the next few hours, but the need for a
downstream watch is uncertain and will be conditional on the degree
of destabilization that can occur over the next couple of hours.
..Moore.. 04/06/2022
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...RAH...ILM...CHS...CAE...
LAT...LON 32807987 33477998 34097994 34477929 34707847 34517774
34257758 33797789 33747826 33587874 33147896 32887939
32727967 32697980 32807987
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