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ACUS11 KWNS 140822
SWOMCD
SPC MCD 140822=20
TXZ000-141045-
Mesoscale Discussion 1858
NWS Storm Prediction Center Norman OK
0322 AM CDT Thu Oct 14 2021
Areas affected...Portions of central/coastal TX
Concerning...Severe potential...Watch unlikely=20
Valid 140822Z - 141045Z
Probability of Watch Issuance...5 percent
SUMMARY...An isolated severe risk may persist for a couple of hours
early this morning. Watch issuance is not expected.
DISCUSSION...A supercell on the southern flank of a large area of
precipitation has shown recent signs of low-level rotation. Although
a southerly low-level jet across central/coastal TX remains fairly
modest (20-25 kt), there is some enhancement to flow in the 0-1-km
layer. Around 200 m2/s2 of 0-1-km SRH is present per the KCRP VWP,
which is enough for modest storm organization and the low-level
rotation which has been observed. Strong/gusty winds and perhaps a
brief tornado may occur in the short term with the ongoing
supercell. Less clear is the prospect for continued storm
organization early this morning. A weak impulse embedded within the
large-scale upper trough encompassing much of the western and
central CONUS should slowly depart this region as it overspreads the
ArkLaTex and lower MS Valley. The southerly low-level jet is also
forecast to gradually diminish through the morning as well. Given
the lack of stronger large-scale forcing and a marginal
thermodynamic environment, the potential for sustained/organized
severe storms appears relatively low. Accordingly, watch issuance is
not expected early this morning.
..Gleason/Edwards.. 10/14/2021
...Please see
https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!tV8SwdIqIGzOSFPk1NcGRLPJB5jA_TXN8_NVHxvjYg2dEVq4XAMOmdIfKclST9e39AY045a6$=
for graphic product...
ATTN...WFO...HGX...CRP...EWX...
LAT...LON 29609796 29559733 29879643 29629618 29349628 29099685
28849775 29199820 29609796=20
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