Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 341
NWS Storm Prediction Center Norman OK
735 PM CDT Mon Jun 19 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeast Louisiana
Southern Mississippi
Coastal Waters
* Effective this Monday night and Tuesday morning from 735 PM
until 100 AM 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
A tornado or two possible
SUMMARY...Scattered severe storms will persist through early tonight
and expand some to the west across southeast Louisiana and adjacent
areas of southern Mississippi. The storm environment favors a mix
of storm clusters and supercells capable of producing occasional
large hail and damaging winds, as well as an isolated tornado or
two.
The severe thunderstorm watch area is approximately along and 45
statute miles north and south of a line from 40 miles west northwest
of Slidell LA to 45 miles south southeast of Gulfport MS. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU1).
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 340...
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 600. Mean storm motion vector
33025.
...Thompson
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 341
NWS Storm Prediction Center Norman OK
735 PM CDT Mon Jun 19 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeast Louisiana
Southern Mississippi
Coastal Waters
* Effective this Monday night and Tuesday morning from 735 PM
until 100 AM 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
A tornado or two possible
SUMMARY...Scattered severe storms will persist through early tonight
and expand some to the west across southeast Louisiana and adjacent
areas of southern Mississippi. The storm environment favors a mix
of storm clusters and supercells capable of producing occasional
large hail and damaging winds, as well as an isolated tornado or
two.
The severe thunderstorm watch area is approximately along and 45
statute miles north and south of a line from 40 miles west northwest
of Slidell LA to 45 miles south southeast of Gulfport MS. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU1).
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 340...
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 600. Mean storm motion vector
33025.
...Thompson
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 341 SEVERE TSTM LA MS CW 200035Z - 200600Z
AXIS..45 STATUTE MILES NORTH AND SOUTH OF LINE..
40WNW ASD/SLIDELL LA/ - 45SSE GPT/GULFPORT MS/
..AVIATION COORDS.. 40NM N/S /45E BTR - 60SSW SJI/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 600. MEAN STORM MOTION VECTOR 33025.
LAT...LON 31229044 30458878 29158878 29929044
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 341 Status Report Messages:
STATUS REPORT #2 ON WW 341
VALID 200245Z - 200340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 WNW MCB TO
40 ESE MCB TO 20 WNW GPT TO 10 SSW GPT TO 50 ENE BVE.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1171
..WENDT..06/20/23
ATTN...WFO...LIX...
&&
STATUS REPORT FOR WS 341
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC051-071-075-087-089-095-103-105-117-200340-
LA
. LOUISIANA PARISHES INCLUDED ARE
JEFFERSON ORLEANS PLAQUEMINES
ST. BERNARD ST. CHARLES ST. JOHN THE BAPTIST
ST. TAMMANY TANGIPAHOA WASHINGTON
$$
MSC045-109-113-200340-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
HANCOCK PEARL RIVER PIKE
$$
GMZ530-532-534-536-538-555-557-200340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
MISSISSIPPI SOUND
LAKE BORGNE
CHANDELEUR SOUND
BRETON SOUND
COASTAL WATERS FROM BOOTHVILLE LA TO SOUTHWEST PASS OF THE
MISSISSIPPI RIVER OUT 20 NM
COASTAL WATERS FROM PASCAGOULA MISSISSIPPI TO STAKE ISLAND OUT 20
NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 341
VALID 200125Z - 200240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NW MCB TO
25 E GPT TO 50 SSE MOB.
..WENDT..06/20/23
ATTN...WFO...LIX...
&&
STATUS REPORT FOR WS 341
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC051-071-075-087-089-095-103-105-117-200240-
LA
. LOUISIANA PARISHES INCLUDED ARE
JEFFERSON ORLEANS PLAQUEMINES
ST. BERNARD ST. CHARLES ST. JOHN THE BAPTIST
ST. TAMMANY TANGIPAHOA WASHINGTON
$$
MSC045-047-109-113-147-200240-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
HANCOCK HARRISON PEARL RIVER
PIKE WALTHALL
$$
GMZ530-532-534-536-538-555-557-200240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
MISSISSIPPI SOUND
LAKE BORGNE
CHANDELEUR SOUND
BRETON SOUND
COASTAL WATERS FROM BOOTHVILLE LA TO SOUTHWEST PASS OF THE
MISSISSIPPI RIVER OUT 20 NM
COASTAL WATERS FROM PASCAGOULA MISSISSIPPI TO STAKE ISLAND OUT 20
NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (20%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (5%)
|
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.
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