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Mesoscale Discussion 1231
NWS Storm Prediction Center Norman OK
1224 PM CDT Wed Jul 15 2020
Areas affected...Southeast MIssissippi...far southeast
Louisiana...Southwest Alabama...and the western Florida Panhandle
Concerning...Severe potential...Watch unlikely
Valid 151724Z - 151900Z
Probability of Watch Issuance...20 percent
SUMMARY...Isolated wet microbursts are possible through the
afternoon.
DISCUSSION...Numerous storms have already developed along the sea
breeze in southern Louisiana and southern Alabama/FL panhandle with
additional storms developing north into south-central Alabama. This
area will be the favorable corridor for numerous storms beneath
cooler mid-level temperatures. Continued storm development is
expected through the afternoon along merging outflows and the sea
breeze. MLCAPE around 2500 to 3000 J/kg will support vigorous
updraft growth, but very weak shear will limit longevity and thus
organized severe potential. However, this very weak shear (at or
below 15 kts per area VWP and RAP forecast soundings) will support
significant water loading of updrafts and the potential for some wet
microbursts. The environment is not overly favorable for wet
microbursts, but given the number of storms expected, isolated
damaging winds are possible from a few of them.
..Bentley/Guyer.. 07/15/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...TAE...BMX...MOB...JAN...LIX...
LAT...LON 29598963 29709046 30029090 31448998 32208948 32598870
32568747 32328654 31528540 30708513 30178559 30148673
30138806 29878902 29598963
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