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
Tornado Watch Number 251
NWS Storm Prediction Center Norman OK
755 PM CDT Thu May 16 2024
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southeast Louisiana
Coastal Waters
* Effective this Thursday night and Friday morning from 755 PM
until 300 AM CDT.
* Primary threats include...
A couple tornadoes possible
Scattered damaging winds and isolated significant gusts to 75
mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...A broken squall line will move east into southeast
Louisiana this evening and progress east across the Watch area
tonight. In addition to the risk for a couple of tornadoes, severe
gusts (60-75 mph) capable of wind damage may accompany the more
intense portions of the squall line.
The tornado watch area is approximately along and 65 statute miles
north and south of a line from 5 miles north of Lafayette LA to 35
miles east of Boothville LA. For a complete depiction of the watch
see the associated watch outline update (WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 249...WW 250...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 27035.
...Smith
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 251
NWS Storm Prediction Center Norman OK
755 PM CDT Thu May 16 2024
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southeast Louisiana
Coastal Waters
* Effective this Thursday night and Friday morning from 755 PM
until 300 AM CDT.
* Primary threats include...
A couple tornadoes possible
Scattered damaging winds and isolated significant gusts to 75
mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...A broken squall line will move east into southeast
Louisiana this evening and progress east across the Watch area
tonight. In addition to the risk for a couple of tornadoes, severe
gusts (60-75 mph) capable of wind damage may accompany the more
intense portions of the squall line.
The tornado watch area is approximately along and 65 statute miles
north and south of a line from 5 miles north of Lafayette LA to 35
miles east of Boothville LA. For a complete depiction of the watch
see the associated watch outline update (WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 249...WW 250...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 27035.
...Smith
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 251 TORNADO LA CW 170055Z - 170800Z
AXIS..65 STATUTE MILES NORTH AND SOUTH OF LINE..
5N LFT/LAFAYETTE LA/ - 35E BVE/BOOTHVILLE LA/
..AVIATION COORDS.. 55NM N/S /37WSW BTR - 68E LEV/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27035.
LAT...LON 31219198 30278882 28398882 29339198
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 251 Status Report Messages:
STATUS REPORT #4 ON WW 251
VALID 170545Z - 170640Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 NE 7R4 TO
30 W MSY TO 10 SE ASD TO 15 WNW GPT.
..GOSS..05/17/24
ATTN...WFO...LIX...
&&
STATUS REPORT FOR WT 251
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC007-051-057-071-075-087-089-093-095-103-109-170640-
LA
. LOUISIANA PARISHES INCLUDED ARE
ASSUMPTION JEFFERSON LAFOURCHE
ORLEANS PLAQUEMINES ST. BERNARD
ST. CHARLES ST. JAMES ST. JOHN THE BAPTIST
ST. TAMMANY TERREBONNE
$$
GMZ530-534-538-550-552-555-170640-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
LAKE BORGNE
BRETON SOUND
COASTAL WATERS FROM PORT FOURCHON LA TO LOWER ATCHAFALAYA RIVER
LA OUT 20 NM
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO PORT FOURCHON LOUISIANA OUT 20 NM
COASTAL WATERS FROM BOOTHVILLE LA TO SOUTHWEST PASS OF THE
MISSISSIPPI RIVER OUT 20 NM
$$
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.
$$
STATUS REPORT #3 ON WW 251
VALID 170430Z - 170540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 ENE 7R4
TO 30 W MSY TO 30 S MCB.
..SPC..05/17/24
ATTN...WFO...LIX...
&&
STATUS REPORT FOR WT 251
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC007-051-057-071-075-087-089-093-095-103-105-109-117-170540-
LA
. LOUISIANA PARISHES INCLUDED ARE
ASSUMPTION JEFFERSON LAFOURCHE
ORLEANS PLAQUEMINES ST. BERNARD
ST. CHARLES ST. JAMES ST. JOHN THE BAPTIST
ST. TAMMANY TANGIPAHOA TERREBONNE
WASHINGTON
$$
GMZ530-534-538-550-552-555-170540-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
LAKE BORGNE
BRETON SOUND
COASTAL WATERS FROM PORT FOURCHON LA TO LOWER ATCHAFALAYA RIVER
LA OUT 20 NM
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO PORT FOURCHON LOUISIANA OUT 20 NM
COASTAL WATERS FROM BOOTHVILLE LA TO SOUTHWEST PASS OF THE
MISSISSIPPI RIVER 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 #2 ON WW 251
VALID 170345Z - 170440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NE 7R4 TO
40 E LFT TO 30 SW MCB.
..SPC..05/17/24
ATTN...WFO...LIX...
&&
STATUS REPORT FOR WT 251
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC005-007-033-047-051-057-063-071-075-087-089-091-093-095-103-
105-109-117-170440-
LA
. LOUISIANA PARISHES INCLUDED ARE
ASCENSION ASSUMPTION EAST BATON ROUGE
IBERVILLE JEFFERSON LAFOURCHE
LIVINGSTON ORLEANS PLAQUEMINES
ST. BERNARD ST. CHARLES ST. HELENA
ST. JAMES ST. JOHN THE BAPTISTST. TAMMANY
TANGIPAHOA TERREBONNE WASHINGTON
$$
GMZ530-534-538-550-552-555-170440-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
LAKE BORGNE
BRETON SOUND
COASTAL WATERS FROM PORT FOURCHON LA TO LOWER ATCHAFALAYA RIVER
LA OUT 20 NM
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO PORT FOURCHON LOUISIANA OUT 20 NM
COASTAL WATERS FROM BOOTHVILLE LA TO SOUTHWEST PASS OF THE
MISSISSIPPI RIVER OUT 20 NM
$$
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.
$$
STATUS REPORT #1 ON WW 251
VALID 170220Z - 170340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..SPC..05/17/24
ATTN...WFO...LIX...
&&
STATUS REPORT FOR WT 251
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC005-007-033-037-047-051-057-063-071-075-077-087-089-091-093-
095-103-105-109-117-121-125-170340-
LA
. LOUISIANA PARISHES INCLUDED ARE
ASCENSION ASSUMPTION EAST BATON ROUGE
EAST FELICIANA IBERVILLE JEFFERSON
LAFOURCHE LIVINGSTON ORLEANS
PLAQUEMINES POINTE COUPEE ST. BERNARD
ST. CHARLES ST. HELENA ST. JAMES
ST. JOHN THE BAPTIST ST. TAMMANY TANGIPAHOA
TERREBONNE WASHINGTON WEST BATON ROUGE
WEST FELICIANA
$$
GMZ530-534-538-550-552-555-170340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
LAKE BORGNE
BRETON SOUND
COASTAL WATERS FROM PORT FOURCHON LA TO LOWER ATCHAFALAYA RIVER
LA OUT 20 NM
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO PORT FOURCHON LOUISIANA OUT 20 NM
COASTAL WATERS FROM BOOTHVILLE LA TO SOUTHWEST PASS OF THE
MISSISSIPPI RIVER 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
|
Mod (30%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (10%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Low (20%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (10%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
Mod (60%)
|
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.
weather.gov 
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