Alert archive / Louisiana / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 48, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at May 21, 1990, 7:45 PM CDT for Grant Parish, Louisiana. It was in force for 30 min.
The area
The counties it named.
The facts
- Issued
- May 21, 1990, 7:45 PM CDT (00:45 UTC)
- Expired
- May 21, 1990, 8:15 PM CDT
- In force
- 30 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 00:00Z, 0.8 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
- 3677 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 832 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.9
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 21, 2:32 PM CDT, 5 hours 13 minutes before
LAZ005-006-007-008-011-012-212035- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 228 PM CDT MON MAY 21 1990 ...A SEVERE THUNDERSTORM WATCH IN EFFECT FOR THE CENTRAL LOUISIANA PARISHES OF GRANT...LA SALLE...RAPIDES...AND SOUTH CENTRAL LOUISIANA PARISHES OF EVANGELINE...ACADIA...UNTIL 500 PM... AT 225 PM...A BAND OF STRONG THUNDERSTORMS WAS SHOWN IN EXTREME SOUTH WEST MISSISSIPPI MIDWAY BETWEEN NATCHEZ AND BATON ROUGE...OR 30 TO 40 MILES NORTHWEST THROUGH NORTHEAST OF THE CAPITOL CITY. THESE STRONG THUNDERSTORMS WERE MOVING SOUTHSOUTHEAST AT 25 MPH. A FEW THUNDERSTORMS AND SHOWERS WERE LOCATED NEAR AND SOUTHEAST OF ALEXANDRIA MOVING SOUTHEAST.
Special weather statement, May 21, 3:35 PM CDT, 4 hours 10 minutes before
LAZ005-006-007-008-011-012-212135- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 332 PM CDT MON MAY 21 1990 ...A SEVERE THUNDERSTORM WATCH IN EFFECT FOR THE CENTRAL LOUISIANA PARISHES OF GRANT...LA SALLE...RAPIDES...AND SOUTH CENTRAL LOUISIANA PARISHES OF EVANGELINE...ACADIA...UNTIL 500 PM... AT 325 PM...THUNDERSTORM ACTIVITY DECREASED IN CENTRAL AND EAST LOUISIANA. SCATTERED THUNDERSTORMS AND SHOWERS WECRE LOCATED SOUTH AND SOUTHEAST OF ALEXANDRIA...15 TO 30 MILES...AND JUST NORTHWEST THROUGH NORTHEAST OF BATON ROUGE. MOVEMENT WAS SOUTHEAST AT 25 MPH SOUTH OF ALEXANDRIA...SOUTH AT 25 MPH NORTH OF BATON ROUGE.
Special weather statement, May 21, 4:30 PM CDT, 3 hours 15 minutes before
LAZ005-006-007-008-011-012-212235- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 429 PM CDT MON MAY 21 1990 ...A SEVERE THUNDERSTORM WATCH IN EFFECT FOR A LARGE PART OF NORTH AND CENTRAL LOUISIANA UNTIL 900 PM... AT 425 PM...NO THUNDERSTORM ACTIVITY WAS INDICATED BY RADAR WITHIN 125 MILES OF LAKE CHARLES.
Special weather statement, May 21, 5:39 PM CDT, 2 hours 6 minutes before
LAZ005-006-007-008-011-012-212335- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 535 PM CDT MON MAY 21 1990 ...A SEVERE THUNDERSTORM WATCH IN EFFECT FOR A LARGE PART OF NORTH AND CENTRAL LOUISIANA UNTIL 900 PM... AT 525 PM...SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN WAS SHOWN FROM 25 MILES NORTHWEST OF WINNFIELD TO 20 MILES NORTHEAST OF WINNFIELD. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 25 MPH AND WILL BE MOVING INTO GRANT AND LA SALLE PARISHES WITHIN THE NEXT HOUR. AN ISOLATED SHOWER HAD DEVELOPED 10 MILES NORTH OF OAKDALE.
Special weather statement, May 21, 5:43 PM CDT, 2 hours 2 minutes before
LAZ005-006-007-008-011-012-212335- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY CORRECTION NATIONAL WEATHER SERVICE LAKE CHARLES LA 535 PM CDT MON MAY 21 1990 ...A SEVERE THUNDERSTORM WATCH IN EFFECT FOR A LARGE PART OF NORTH AND CENTRAL LOUISIANA UNTIL 900 PM... AT 525 PM...SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN WERE SHOWN FROM 25 MILES NORTHWEST OF WINNFIELD TO 20 MILES NORTHEAST OF WINNFIELD. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 25 MPH AND WILL BE MOVING INTO GRANT AND LA SALLE PARISHES WITHIN THE NEXT HOUR. AN ISOLATED SHOWER HAD DEVELOPED 10 MILES NORTH OF OAKDALE.
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 7:00 PM CDT | Severe Thunderstorm Warning | LCH | Rapides | 60 min |
| May 21, 7:10 PM CDT | Severe Thunderstorm Warning | LCH | Grant, LaSalle | 20 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.