Alert archive / Louisiana / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 89, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Sep 21, 2003, 1:59 PM CDT for Calcasieu Parish, Louisiana. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 21, 2003, 1:59 PM CDT (18:59 UTC)
- Expired
- Sep 21, 2003, 2:45 PM CDT
- In force
- 46 min
- Issued by
- NWS Lake Charles, LA
- Area
- Counties, with a storm outline in the text
County Calcasieu Parish, LA
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 7.0 hours before the alert went out and 36 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
- 275 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 803 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KLCH 211859 SVRLCH LAC019-211945- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAKE CHARLES LA 155 PM CDT SUN SEP 21 2003 THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CALCASIEU PARISH IN SOUTHWEST LOUISIANA * UNTIL 245 PM CDT * AT 155 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES SOUTH OF VINTON...MOVING NORTH AT 25 MPH. * THIS STORM WILL BE NEAR... VINTON BY 215 PM CDT DESTRUCTIVE WINDS IN EXCESS OF 60 MPH CAN BE EXPECTED. THIS STORM COULD PRODUCE A TORNADO AT ANY TIME. TAKE COVER NOW VEHICLES AND MOBILE HOMES ARE NOT SAFE. CALL 337-477-5285 TO REPORT SEVERE WEATHER TO THE WEATHER SERVICE. LAT...LON 3007 9371 3007 9345 3039 9331 3040 9362 $$
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.
NWS Lake Charles, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 21, 10:08 AM CDT, 3 hours 51 minutes earlier.
Area forecast discussion, Sep 21, 10:08 AM CDT, 3 hours 51 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA 955 AM CDT SUN 21 SEP 2003 ...FLOOD WATCH FOR TODAY... .OVERVIEW...LARGE RAIN SHIELD EXTENDS OVER SE TX...SRN LA AND ADJACENT CSTL WATERS. RAINFALL ESTIMATES ALONG THE COAST NEAR SABINE PASS...FOUR TO SIX INCHES. OTHER TOTALS...ONE TO THREE INCHES EXTEND FROM JEFFERSON AND ORANGE COUNTIES IN SE TX EAST INTO CAMERON... CALCASIEU AND VERMILION PARISHES WITH LESSER AMOUNTS FOR INLD COUNTIES AND PARISHES. RAIN THIS MRNG DEVELOPED FROM AN AREA OF DISTURBED WEATHER IN THE EXTREME WESTERN GULF. THIS AREA HAS A SFC LOW LOCATED OFF THE BRO COAST...W/ A CSTL TROF SWEEPING NORTHWARD INTO THE SOUTH-CNTRL LA CSTL WATERS. ADDITIONAL SUPPORT IS BEING PROVIDED BY A TROF TO OUR WEST AND IS EXPECTED TO BE ENHANCED BY THE RIGHT REAR QUAD OF THE 250 JET. PRECIP TDY WILL MOVE TOWARDS THE NORTH. LCH MRNG SOUNDING IS COMPLETE SATURATED THRU THE ENTIRE COLUMN. WHAT DO WE EXPECT FOR TDY...MORE OF THE SAME WITH CLOUDY SKIES AND RAIN... HEAVY AT TIMES. TEMPERATURES ARE EXPECTED TO HOVER IN THE MID TO UPPER 70S AT BEST. TONIGHT EXPECT A FRONTAL BOUNDARY TO MOVE CLOSER TO THE LAKE CHARLES COUNTY WARNING AREA PROVIDING FOR ADDITIONAL RAINS ALONG AND AHEAD OF THE FRONT. WE EXPECT THIS FRONT TO PUSH ACROSS THE AREA ON MONDAY WITH RAIN ENDING FROM WEST TO EAST. HIGH PRESSURE WILL BUILD IN RAPIDLY MONDAY AFTERNOON THROUGH THE MIDDLE OF THE WEEK. SUNNY SKIES AND MILD CONDITIONS WILL PREVAIL SHORTLY THEREAFTER. .EXTENDED...ANOTHER REINFORCING SURGE OF NORTHERLY AIR WILL KEEP CONDITIONS MILD THROUGH FRIDAY. SEE NO REASON TO VEER FROM STABLE CONDITIONS AND MILD TEMPERATURES. CSTL WTRS...SMALL CRAFT ADVISORY FOR TODAY. .FORECAST CONFIDENCE...HIGH. .PRELIMINARY POINT TEMPS/POPS... KLCH 77 71 87 68 / 99 80 30 00 KBPT 77 71 87 68 / 99 80 30 00 KAEX 77 71 87 66 / 99 70 30 00 KLFT 77 72 86 68 / 99 80 40 00 .LCH WATCHES/WARNINGS/ADVISORIES... LA...FLOOD WATCH SOUTHWEST/CENTRAL AND SOUTH-CENTRAL LOUISIANA. TX...FLOOD WATCH SOUTHEAST TEXAS.
Hazardous weather outlook, Sep 21, 6:00 AM CDT, 7 hours 59 minutes before
LAZ027>033-041>045-051>055-TXZ180>182-201-215-216-221100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAKE CHARLES LA 600 AM CDT SUN SEP 21 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS...CENTRAL... SOUTH-CENTRAL AND SOUTHWEST LOUISIANA. .DAY ONE...TODAY AND TONIGHT... A DEEP TROPICAL AIRMASS AND A SURFACE TROUGH OF LOW PRESSURE WILL RESULT IN WIDESPREAD SHOWERS AND THUNDERSTORMS THROUGH TONIGHT WITH HEAVY RAIN LIKELY. A FLOOD WATCH HAS BEEN ISSUED FOR THE ENTIRE AREA. OVER THE COASTAL WATERS, LARGE DIFFERENCES IN PRESSURE WILL GENERATE MODERATE EASTERLY BREEZES, ESPECIALLY FROM HIGH ISLAND TO CAMERON. A SMALL CRAFT ADVISORY WILL BE IN EFFECT AS SEAS WILL BE IN THE 4 TO 6 FOOT RANGE. NO SEVERE WEATHER IS EXPECTED FOR DAY ONE. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... ANOTHER COLD FRONT WILL PUSH THROUGH THE AREA ON MONDAY WITH SHOWERS AND THUNDERSTORMS ENDING FROM WEST TO EAST. HIGH PRESSURE WILL BUILD INTO THE REGION TUESDAY THROUGH SATURDAY ALLOWING FOR DRIER CONDITIONS AND MILD TEMPERATURES. NO SEVERE WEATHER IS EXPECTED FOR DAYS TWO THROUGH SEVEN. INFORMATION STATEMENT...THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL, IN SUPPORT OF SEVERE WEATHER OPERATIONS, IS NOT REQUESTED AT THIS TIME. 06
In the hours before
Local storm report, Sep 21, 1:15 PM CDT, 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
115 PM CDT SUN SEP 21 2003
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0106 PM 7 SW JOHNSON BAYOU XX 38 MPH MARINE TSTM WIND
09/21/03 XXX
0106 PM 12 SW JOHNSON BAYOU XX 40 MPH MARINE TSTM WIND
09/21/03 XXX
THMThe office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 12:50 PM CDT | Special Marine Warning | LCH | 55 min | |
| Sep 21, 1:42 PM CDT | Severe Thunderstorm Warning | LCH | Cameron | 33 min |
| Sep 21, 2:30 PM CDT | Special Marine Warning | LCH | 60 min | |
| Sep 21, 2:30 PM CDT | Special Marine Warning | LCH | 60 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2003Every severe thunderstorm warning in 2003
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.