Source: US National Oceanic and Atmospheric Administration
Note: The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.Note: Click for Watch Status Reports.
SEL4
URGENT – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 84
NWS Storm Prediction Center Norman OK
345 AM CDT Mon Mar 31 2025
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeast Louisiana
Southern Mississippi
Coastal Waters
* Effective this Monday morning from 345 AM until 1100 AM CDT.
* Primary threats include…
Scattered damaging wind gusts to 70 mph likely
Isolated very large hail events to 2 inches in diameter possible
A tornado or two possible
SUMMARY…Thunderstorms are expected to consolidate into a line as
they move east-southeastward this morning. Scattered damaging winds
should be the main threat, with peak gusts potentially up to 60-70
mph. Isolated large hail around 1-2 inches in diameter and a tornado
or two may also occur.
The severe thunderstorm watch area is approximately along and 85
statute miles north and south of a line from 55 miles northwest of
Houma LA to 20 miles south southeast of Slidell LA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU4).
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 80…WW 81…WW 82…WW
83…
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
28035.
…Gleason
SEL4
URGENT – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 84
NWS Storm Prediction Center Norman OK
345 AM CDT Mon Mar 31 2025
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeast Louisiana
Southern Mississippi
Coastal Waters
* Effective this Monday morning from 345 AM until 1100 AM CDT.
* Primary threats include…
Scattered damaging wind gusts to 70 mph likely
Isolated very large hail events to 2 inches in diameter possible
A tornado or two possible
SUMMARY…Thunderstorms are expected to consolidate into a line as
they move east-southeastward this morning. Scattered damaging winds
should be the main threat, with peak gusts potentially up to 60-70
mph. Isolated large hail around 1-2 inches in diameter and a tornado
or two may also occur.
The severe thunderstorm watch area is approximately along and 85
statute miles north and south of a line from 55 miles northwest of
Houma LA to 20 miles south southeast of Slidell LA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU4).
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 80…WW 81…WW 82…WW
83…
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
28035.
…Gleason
Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW4
WW 84 SEVERE TSTM LA MS CW 310845Z – 311600Z
AXIS..85 STATUTE MILES NORTH AND SOUTH OF LINE..
55NW HUM/HOUMA LA/ – 20SSE ASD/SLIDELL LA/
..AVIATION COORDS.. 75NM N/S /21S BTR – 21NE HRV/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 28035.
LAT…LON 31369132 31318969 28858969 28909132
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU4.
Watch 84 Status Report Message has not been issued yet.
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 (10%)
Wind
Probability of 10 or more severe wind events
Mod (60%)
Probability of 1 or more wind events > 65 knots
Low (20%)
Hail
Probability of 10 or more severe hail events
Mod (30%)
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 (80%)
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.