Storm Prediction Center Severe Thunderstorm Watch 339
6 min read
2 weeks ago
Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended. Note: Click for Watch Status Reports.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 339
NWS Storm Prediction Center Norman OK
505 PM CDT Tue May 27 2025
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southwest Alabama
Far Western Florida Pahandle
Extreme Eastern Louisiana
Southeast Mississippi
Coastal Waters
* Effective this Tuesday afternoon and evening from 505 PM until
1100 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Thunderstorms are developing across southeast Mississippi
and adjacent far eastern Louisiana, and the environment across the
region supports strong to severe storms capable of large hail and
damaging gusts. These thunderstorms will likely persist for at least
the next several hours, with some chance for upscale growth into a
convective line as they move into more of southwest/coastal Alabama
and the far western Florida Panhandle.
The severe thunderstorm watch area is approximately along and 80
statute miles east and west of a line from 50 miles east northeast
of Meridian MS to 35 miles west of Mobile AL. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 337...WW 338...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
24035.
...Mosier
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 339
NWS Storm Prediction Center Norman OK
505 PM CDT Tue May 27 2025
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southwest Alabama
Far Western Florida Pahandle
Extreme Eastern Louisiana
Southeast Mississippi
Coastal Waters
* Effective this Tuesday afternoon and evening from 505 PM until
1100 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Thunderstorms are developing across southeast Mississippi
and adjacent far eastern Louisiana, and the environment across the
region supports strong to severe storms capable of large hail and
damaging gusts. These thunderstorms will likely persist for at least
the next several hours, with some chance for upscale growth into a
convective line as they move into more of southwest/coastal Alabama
and the far western Florida Panhandle.
The severe thunderstorm watch area is approximately along and 80
statute miles east and west of a line from 50 miles east northeast
of Meridian MS to 35 miles west of Mobile AL. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 337...WW 338...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
24035.
...Mosier
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 339 SEVERE TSTM AL FL LA MS CW 272205Z - 280400Z
AXIS..80 STATUTE MILES EAST AND WEST OF LINE..
50ENE MEI/MERIDIAN MS/ - 35W MOB/MOBILE AL/
..AVIATION COORDS.. 70NM E/W /45ENE MEI - 25W SJI/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24035.
LAT...LON 32598658 30678749 30679019 32598933
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 339 Status Report Messages:
STATUS REPORT #3 ON WW 339
VALID 280130Z - 280240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NW GPT TO
30 WSW SEM TO 15 SE SEM.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1015.
..GRAMS..05/28/25
ATTN...WFO...MOB...BMX...LIX...JAN...
&&
STATUS REPORT FOR WS 339
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC003-025-035-047-053-097-099-129-131-280240-
AL
. ALABAMA COUNTIES INCLUDED ARE
BALDWIN CLARKE CONECUH
DALLAS ESCAMBIA MOBILE
MONROE WASHINGTON WILCOX
$$
FLC033-113-280240-
FL
. FLORIDA COUNTIES INCLUDED ARE
ESCAMBIA SANTA ROSA
$$
MSC039-041-047-059-131-280240-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
GEORGE GREENE HARRISON
JACKSON STONE
$$
GMZ630-280240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
NORTH MOBILE BAY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 339
VALID 280050Z - 280140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NE ASD TO
45 W SEM TO 20 E SEM.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1015.
..GRAMS..05/28/25
ATTN...WFO...MOB...BMX...LIX...JAN...
&&
STATUS REPORT FOR WS 339
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC003-025-035-047-053-091-097-099-129-131-280140-
AL
. ALABAMA COUNTIES INCLUDED ARE
BALDWIN CLARKE CONECUH
DALLAS ESCAMBIA MARENGO
MOBILE MONROE WASHINGTON
WILCOX
$$
FLC033-113-280140-
FL
. FLORIDA COUNTIES INCLUDED ARE
ESCAMBIA SANTA ROSA
$$
MSC039-041-045-047-059-109-111-131-280140-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
GEORGE GREENE HANCOCK
HARRISON JACKSON PEARL RIVER
PERRY STONE
$$
GMZ630-280140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
NORTH MOBILE BAY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 339
VALID 272340Z - 280040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 W PIB TO
40 ENE MEI.
..GRAMS..05/27/25
ATTN...WFO...MOB...BMX...LIX...JAN...
&&
STATUS REPORT FOR WS 339
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC003-023-025-035-047-053-063-065-091-097-099-105-119-129-131-
280040-
AL
. ALABAMA COUNTIES INCLUDED ARE
BALDWIN CHOCTAW CLARKE
CONECUH DALLAS ESCAMBIA
GREENE HALE MARENGO
MOBILE MONROE PERRY
SUMTER WASHINGTON WILCOX
$$
FLC033-113-280040-
FL
. FLORIDA COUNTIES INCLUDED ARE
ESCAMBIA SANTA ROSA
$$
LAC103-117-280040-
LA
. LOUISIANA PARISHES INCLUDED ARE
ST. TAMMANY WASHINGTON
$$
MSC023-031-035-039-041-045-047-059-067-073-091-109-111-131-153-
280040-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
CLARKE COVINGTON FORREST
GEORGE GREENE HANCOCK
HARRISON JACKSON JONES
LAMAR MARION PEARL RIVER
PERRY STONE WAYNE
$$
GMZ630-280040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
NORTH MOBILE BAY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Probability of 1 or more strong (EF2-EF5) tornadoes
Low (<2%)
Wind
Probability of 10 or more severe wind events
Mod (40%)
Probability of 1 or more wind events > 65 knots
Low (20%)
Hail
Probability of 10 or more severe hail events
Mod (40%)
Probability of 1 or more hailstones > 2 inches
Mod (30%)
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
High (70%)
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The “Low” category contains probability values ranging from less than 2%
to 20% (EF2-EF5 tornadoes), less than 5% to 20% (all other probabilities),
“Moderate” from 30% to 60%, and “High” from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.
