Alert archive / Louisiana / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 93, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Aug 30, 1990, 7:48 PM CDT for Acadia Parish, Lafayette Parish, Vermilion Parish, Louisiana. It was in force for 57 min.
The area
The counties it named.
The facts
- Issued
- Aug 30, 1990, 7:48 PM CDT (00:48 UTC)
- Expired
- Aug 30, 1990, 8:45 PM CDT
- In force
- 57 min
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties
Counties Acadia Parish, LA, Lafayette Parish, LA, Vermilion 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 90 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
- 4254 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 1289 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 179 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 14.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLCH 310050 RRA SVRLCH LAC001-055-113-310145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAKE CHARLES LA 748 PM CDT THU AUG 30 1990 THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 845 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST LOUISIANA ...SOUTHERN ACADIA PARISH...LAFAYETTE PARISH...VERMILION PARISH AT 747 PM...THE LAKE CHARLES WEATHER RADAR INDICATED A CLUSTER OF SEVERE THUNDERSTORMS FROM JUST EAST OF CROWLEY...TO THE LAFAYETTE AND NEW IBERIA AREAS. THE THUNDERSTORMS WERE MOVING SOUTH AT 20 MILES AN HOUR. 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, Aug 30, 3:38 PM CDT, 4 hours 10 minutes before
LAZ005-006-007-008-011-012-302145- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 335 PM CDT THU AUG 30 1990 ...SEVERE THUNDERSTORMS WATCH IN EFFECT UNTIL 9 PM THIS THURSDAY EVENING FOR ALL OF SOUTHWEST AND CENTRSL LOUISIANA. AT 330 PM...THUNDERSTORMS...SOME WITH VERY HEAVY RAINS...WERE DEVELOPING RATHER RAPIDLY OVER PORTIONS OF CENTRAL LOUISIANA..MAINLY IN LASALLE.. GRANT..AND RAPIDES PARISHES. AN INTENSE THUNDERSTORM WITH HAIL INDICATED BY RADAR WAS SHOWN JUST EAST OF ALEXANDRIA ..ABOUT 15 MILES NORTH OF MARKSVILLE MOVING TOWARD THE SOUTH AT 25 MPH. PERSONS IN CENTRAL LOUISIANA SHOULD BE ON THE ALERT IN THE EVENT OTHER WEATHER DEVELOPMENTS OCCUR WERE A WARNING IS REQUIRED. PERIODS OF VERY HEAVY RAINS...STRONG GUSTY WINDS...DANGEROUS LUGHTNING.. AND HAIL ARE LIKELY TO OCCUR WITH THE HEAVIER THUNDERSTORMS. ALSO FLOODING OF LOW LYING AREAS IS LIKELY.
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 8:17 PM CDT | Tornado Warning | LCH | Lafayette, Vermilion | 43 min |
| Aug 30, 9:20 PM CDT | Severe Thunderstorm Warning | LCH | Cameron, Vermilion | 55 min |
| Aug 30, 11:00 PM CDT | Severe Thunderstorm Warning | LCH | Calcasieu, Cameron | 60 min |
| Aug 31, 12:02 AM CDT | Tornado Warning | LCH | Cameron | 43 min |
| Aug 31, 3:03 PM CDT | Severe Thunderstorm Warning | LCH | Calcasieu | 57 min |
| Aug 31, 3:05 PM CDT | Severe Thunderstorm Warning | LCH | Calcasieu, Cameron | 70 min |
| Aug 31, 3:10 PM CDT | Severe Thunderstorm Warning | LCH | Calcasieu, Cameron | 65 min |
| Aug 31, 3:52 PM CDT | Severe Thunderstorm Warning | LCH | Cameron | 53 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.