Alert archive / Louisiana / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 45, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at May 21, 1990, 6:10 PM CDT for Grant Parish, LaSalle Parish, Louisiana. It was in force for 80 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 21, 1990, 6:10 PM CDT (23:10 UTC)
- Expired
- May 21, 1990, 7:30 PM CDT
- In force
- 80 min
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties
Counties Grant Parish, LA, LaSalle Parish, LA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 21, 7:00 PM CDT | Thunderstorm Wind 52 | Grant, LA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.2 hours before the alert went out and 187 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
- 1676 J/kg
- Mixed-layer CIN
- -146 J/kg
- Mixed-layer LCL
- 869 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 235 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
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, 1:35 PM CDT, 4 hours 35 minutes before
LAZ005-006-007-008-011-012-211940- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 130 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 125 PM...STRONG THUNDERSTORMS WERE INDICATED IN EXTREME SOUTHWEST MISSISSIPPI JUST SOUTH OF NATCHEZ MOVING SOUTHEAST AT 35 MPH. A BAND OF SCATTERED THUNDERSTORMS WAS INCREASING IN CENTRAL LOUISIANA FROM THE EAST PART OF GRANT PARISH ACROSS LA SALLE PARISH TO ABOUT 30 MILES SOUTHEAST OF ALEXANDRIA. AN ISOLATED THUNDERSTORM DEVELOPED 20 MILES SOUTHWEST OF AbLEXANDRIA. THE THUNDERSTORMS NOW JUST NORTHWEST THROUGH SOUTHEAST OF ALEXANDRIA WILL PRODUCE BRIEF VERY GUSTY WINDS AS THEY MOVE SOUTHEAST AT 35 MPH.
Special weather statement, May 21, 2:32 PM CDT, 3 hours 38 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, 2 hours 35 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, 1 hour 40 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, 31 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, 27 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, 12:04 PM CDT | Severe Thunderstorm Warning | LCH | LaSalle | 56 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.