Alert archive / Louisiana / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 33, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at May 12, 1990, 7:00 AM CDT for Grant Parish, Louisiana. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- May 12, 1990, 7:00 AM CDT (12:00 UTC)
- Expired
- May 12, 1990, 8:00 AM CDT
- In force
- 60 min
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties
County Grant Parish, LA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 0.0 hours before the alert went out and 176 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1655 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 555 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 280 m²/s²
- 0-3 km storm-relative helicity
- 430 m²/s²
- Significant tornado parameter
- 3.6
- Supercell composite
- 16.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KESF 111131 COR
SVRESF
LAC043-121300-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTION TO EXPIRATION TIME
NATIONAL WEATHER SERVICE ALEXANDRIA LA
700 AM CDT SAT MAY 12 1990
THE NATIONAL WEATHER SERVICE IN ALEXANDRIA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 AM CDT
FOR PEOPLE IN THE FOLLOWING PARISHES...
IN CENTRAL LOUISIANA
...GRANT
AT 700AM CDT NATIONAL WEATHER SERVICE RADARS SHOWED A
SEVERE THUNDERSTORM NEAR CYRPUS LA MOVING EAST NORTHEAST
AT ABOUT 30 MILES AN HOUR. THIS THUNDERSTORM WILL
MOVE OVER OR VERY NEAR MONTGOMERY IN THE NEXT 30 MINUTES
AND NEAR GEORGETOWN IN ABOUT FOURTY FIVE MINUTES...
PERSONS IN GRANT PARISH SHOUD BE ALERT AND BE PREPARED
TO TAKE NECESSARY ACTION IF THREATENING WEATHER APPROACHES.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, May 12, 3:37 AM CDT, 3 hours 23 minutes before
LAZ005-006-007-008-011-012-120940- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 335 AM CDT SAT MAY 12 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 1000 AM CDT THAT INCLUDES VERNON PARISH IN SOUTHWEST LOUISIANA AND GRANT...LA SALLE ...AND RAPIDES PARISHES IN CENTRAL LOUISIANA... AT 325 AM...LARGE PATCHES OF RAIN MIXED WITH SCATTERED THUNDERSTORMS ...SOME WITH VERY HEAVY RAIN...EXTENDED FROM LUFKIN TEXAS...AND TOLEDO BEND RESERVOIR ACROSS MUCH OF EAST TEXAS TO BETWEEN BEAUMONT AND CONROE. SCATTERED SHOWERS AND SMALL PATCHES OF RAIN WERE SHOWN FROM NEAR LEESVILLE ...ALEXANDRIA...AND NATCHEZ MISSISSIPPI TO THE JENNINGS...SULPHUR...AND ORANGE TEXAS AREAS. ISOLATED SHOWERS AND SMALL PATCHES OF RAIN CONTINUED IN SOUTHEAST TEXAS BETWEEN HOUSTON AND BEAUMONT AND OVER GALVESTON BAY.
Special weather statement, May 12, 4:45 AM CDT, 2 hours 15 minutes before
LAZ005-006-007-008-011-012-121045- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 435 AM CDT SAT MAY 12 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 1000 AM CDT THAT INCLUDES VERNON PARISH IN SOUTHWEST LOUISIANA AND GRANT...LA SALLE ...AND RAPIDES PARISHES IN CENTRAL LOUISIANA... AT 430 AM SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED OVER SOUTHEAST TEXAS AND WEST CENTRAL LOUISIANA. THEEY WERE GENEaRALLY WEST OF A WINNFIELD LOUISIANA...BEAUMONT TEXAS LINE. MOVEMENT WAS EAST AT 40 MILES AN HOUR.
Special weather statement, May 12, 5:45 AM CDT, 1 hour 15 minutes before
LAZ005-006-007-008-011-012-121145- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 545 AM CDT SAT MAY 12 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 1000 AM CDT THAT INCLUDES VERNON PARISH IN SOUTHWEST LOUISIANA AND GRANT...LA SALLE ...AND RAPIDES PARISHES IN CENTRAL LOUISIANA... AT 530 AM SCATTERED SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...CONTINUED ACROSS CENTRAL LOUISIANA AND SOUTHEAST TEXAS. THEY WERE GENERALLY WEST OF AN ALEXANDRIA TO BEAUMONT LINE. THE HEAVIEST RAIN WAS ABOUT 10 MILES NORTH OF ALEXANDRIA AND JUST EAST OF MANY. MOVEMENT WAS EAST AT 40 MILES AN HOUR.
Special weather statement, May 12, 6:40 AM CDT, 20 minutes before
LAZ005-006-007-008-011-012-121245- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 640 AM CDT SAT MAY 12 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 1000 AM CDT THAT INCLUDES VERNON PARISH IN SOUTHWEST LOUISIANA AND GRANT...LA SALLE ...AND RAPIDES PARISHES IN CENTRAL LOUISIANA... AT 630 AM SCATTERED SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...CONTINUED ACROSS CENTRAL LOUISIANA AND SOUTHEAST TEXAS. THEY WERE GENERALLY WEST OF AN ALEXANDRIA TO PORT ARTHUR LINE. THE HEAVIEST RAIN WAS ABOUT 15 MILES NORTHWEST OF ALEXANDRIA. MOVEMENT WAS EAST AT 40 MILES AN HOUR.
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 10:10 AM CDT | Severe Thunderstorm Warning | LCH | Grant, Rapides | 60 min |
| May 12, 2:45 PM CDT | Severe Thunderstorm Warning | LCH | Grant, LaSalle | 60 min |
| May 12, 3:50 PM CDT | Severe Thunderstorm Warning | LCH | LaSalle | 60 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1990Every severe thunderstorm warning in 1990
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.