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ACUS11 KWNS 302040
SWOMCD
SPC MCD 302039=20
LAZ000-302245-

Mesoscale Discussion 0359
NWS Storm Prediction Center Norman OK
0339 PM CDT Wed Mar 30 2022

Areas affected...Parts of southeastern Louisiana

Concerning...Tornado Watch 76...78...

Valid 302039Z - 302245Z

The severe weather threat for Tornado Watch 76, 78 continues.

SUMMARY...Thunderstorm development across the southern Louisiana
coastal plain may become more widely scattered to isolated in nature
toward 6-7 PM CDT. However, the environment will remain favorable
for supercells with the potential to produce tornadoes.

DISCUSSION...As the vigorous upstream short wave begins to pivot
east-northeast of the southern Great Plains, stronger downstream
mid/upper support for convective development may gradually begin to
shift northeast of coastal areas toward 23-00Z. As this occurs,
there may be some weakening and veering of low-level wind fields
with time, but Rapid Refresh forecast soundings indicate that
low-level hodographs across much of southeastern Louisiana will
remain large and clockwise-curved into early evening, beneath 40-50
kt south to southwesterly flow around the 850 mb layer.=20=20

It is possible that the southern flank of the more extensive
eastward advancing line of storms trailing across the Louisiana
coastal plain may transition to more isolate/discrete thunderstorm
development. However, with the boundary-layer ahead of it remaining
seasonably moist and characterized by moderately large CAPE (up to
around 1500 j/kg), the environment will remain conducive to the
evolution of supercells capable of producing tornadoes.

..Kerr.. 03/30/2022

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!of1ieN8rF9wB7POLNG18dEyNveDqje3ah4DDFpDDimks6dw9dyrCjWDlkX9Ck5goItNC97KE$=
for graphic product...

ATTN...WFO...LIX...LCH...

LAT...LON 29799216 30919147 30909009 29959015 29189146 29799216=20



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ACUS11 KWNS 262006
SWOMCD
SPC MCD 262006=20
ALZ000-MSZ000-LAZ000-262200-

Mesoscale Discussion 0359
NWS Storm Prediction Center Norman OK
0306 PM CDT Sun Mar 26 2023

Areas affected...Central and Southern Mississippi

Concerning...Severe potential...Watch likely=20

Valid 262006Z - 262200Z

Probability of Watch Issuance...95 percent

SUMMARY...Severe threat will rapidly increase in the next few hours
across parts of Mississippi. Very large hail and tornadoes will be
possible. A new watch will be issued within the hour.

DISCUSSION...Strong heating has been occurring today across central
and southern MS, where temperatures have risen well into the 80s. A
surface warm front is lifting northward across the region, allowing
70s dewpoints to spread into central MS. This is yielding MLCAPE
values around 3000 J/kg with minimal cap. Several intense
severe/supercell storms have developed over western/central LA that
will track eastward into MS beginning after 4pm. Other isolated
cells are likely to form out ahead of this activity through the
evening.=20=20

Forecast soundings indicate an environment very favorable for
discrete supercells capable of very large hail and tornadoes.=20
Low-level winds will strengthen rapidly by late afternoon/early
evening. This may also increase the risk of strong tornadoes -
especially for those storms that can track in vicinity of the
surface warm front.

A tornado watch will be issued within the hour.

..Hart/Guyer.. 03/26/2023

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8CAxeZIJpnMT4qjyJdtrJ5WrivHkIpVe-rkN62fRgh4Yy34TrN8JbPAGB81waeUOu4fpE0Nrw= BOvcRNfaE1bUH3nT5A$ for graphic product...

ATTN...WFO...MOB...JAN...LIX...LCH...SHV...

LAT...LON 32679195 32858885 32198843 30748885 30569184 32679195=20


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ACUS11 KWNS 030000
SWOMCD
SPC MCD 022359=20
OHZ000-WVZ000-KYZ000-030100-

Mesoscale Discussion 0359
NWS Storm Prediction Center Norman OK
0659 PM CDT Tue Apr 02 2024

Areas affected...south-central Ohio

Concerning...Tornado Watch 78...81...

Valid 022359Z - 030100Z

The severe weather threat for Tornado Watch 78, 81 continues.

SUMMARY...The greatest strong tornado threat in watch 78 and 81 will
exist across south-central Ohio this evening.

DISCUSSION...A long-track supercell has become better organized in
the low-levels within the last hour near the Ohio River in
south-central Ohio. Recently a TDS was apparent from the ILN WSR-88D
in northern Kentucky with another TDS ongoing in Adams County, Ohio
as of 2355 UTC. The environment ahead of this supercell remains
favorable for tornadoes with STP around 2 and no storm interference anticipated. Therefore, this supercell will pose a continued tornado
threat with the potential for strong tornadoes through the evening.

..Bentley.. 04/02/2024

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-YUFmkev4xfzn1BWT7mq3B9NbQd_pOVtPgqFwBahAmZTRVPHdhP8920vAAxYfKFI2MIjXyAhx= J-2eg3tTjl2xOnS_94$ for graphic product...

ATTN...WFO...RLX...ILN...

LAT...LON 38498251 38698370 38848376 39138272 39088207 38878199
38618213 38498251=20


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