Alert archive / Louisiana / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 94, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Aug 30, 1990, 9:20 PM CDT for Cameron Parish, Vermilion Parish, Louisiana. It was in force for 55 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
- Aug 30, 1990, 9:20 PM CDT (02:20 UTC)
- Expired
- Aug 30, 1990, 10:15 PM CDT
- In force
- 55 min
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties
Counties Cameron 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 30, 10:12 PM CDT | Thunderstorm Wind 56 | Vermilion, 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 00:00Z, 2.3 hours before the alert went out and 54 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 310221 SVRLCH LAC023-113-310315- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAKE CHARLES LA 920 PM CDT THU AUG 30 1990 THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1015 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST LOUISIANA ...EASTERN CAMERON PARISH...VERMILION PARISH AT 918 PM THE LAKE CHARLES WEATHER RADAR SHOWED A NARROW BAND OF SEVERE THUNDERSTORMS FROM JUST NORTHWEST OF ABBEVILLE TO 25 MILES SOUTHEAST OF LAKE CHARLES. THE THUNDERSTORMS WERE MOVING SOUTH AT 20 MILES AN HOUR. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
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, 5 hours 42 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.
Special weather statement, Aug 30, 7:56 PM CDT, 1 hour 24 minutes before
LAZ005-006-007-008-011-012-310145 SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 750 PM CDT THU AUG 30 1990 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM FOR ALL OF CENTRAL..SOUTHWEST AND SOUTH CENTRAL LOUISIANA... AT 725 PM...SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN WERE SHOWN FROM NEAR JENNINGS TO LAFAYETTE. THESE THUNDERSTORMS WILL BE MOVING THROUGH SOUTHERN ACADIA AND LAFAYETTE PARISHES AND INTO VERMILION PARISH DURING THE NEXT HOUR. STRONG GUSTY WINDS..DANGEROUS LIGHTNING..AND SMALL HAIL CAN BE EXPECTED WITH THESE THUNDERSTORMS IN ACADIA..LAFAYETTE..AND VERMILION PARISHES AS THEY MOVE SOUTH AT 20 MPH. OTHERWISE SCATTERED THUNDERSTORMS WERE SHOWN FROM JUST SOUTH OF MANY TO 20 MILES NORTH OF LAFAYETTE TO JUST SOUTH OF LAFAYETTE AND TO NEAR DE QUINCY.
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 7:48 PM CDT | Severe Thunderstorm Warning | LCH | Acadia, Lafayette, Vermilion | 57 min |
| Aug 30, 8:17 PM CDT | Tornado Warning | LCH | Lafayette, Vermilion | 43 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.