Alert archive / Louisiana / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 40, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Jul 21, 2002, 8:39 PM CDT for Avoyelles Parish, Louisiana. It was in force for 66 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
- Jul 21, 2002, 8:39 PM CDT (01:39 UTC)
- Expired
- Jul 21, 2002, 9:45 PM CDT
- In force
- 66 min
- Issued by
- NWS Lake Charles, LA
- Area
- Counties, with a storm outline in the text
County Avoyelles 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 00:00Z, 1.7 hours before the alert went out and 165 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
- 4054 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1018 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
684 WUUS54 KLCH 220139 SVRLCH LAC009-220245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAKE CHARLES LA 838 PM CDT SUN JUL 21 2002 THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... AVOYELLES PARISH IN CENTRAL LOUISIANA * UNTIL 945 PM CDT * AT 830 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES NORTHEAST OF EFFIE...MOVING SOUTHWEST AT 10 MPH. * THIS STORM WILL BE NEAR... MARKSVILLE BY 855 PM CDT EFFIE BY 900 PM CDT THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY LARGE HAIL AND WINDS IN EXCESS OF 60 MPH WHICH COULD CAUSE SIGNIFICANT DAMAGE TO PROPERTY. CALL 337-477-5285 TO REPORT SEVERE WEATHER TO THE WEATHER SERVICE. LAT...LON 3121 9192 3131 9200 3120 9220 3109 9207
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 Jul 21, 2:52 PM CDT, 5 hours 47 minutes earlier.
Area forecast discussion, Jul 21, 2:52 PM CDT, 5 hours 47 minutes before
SOUTHWEST LOUISIANA AND SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA 252 PM CDT SUN JUL 21 2002 ...OZONE ACTION DAY FOR HARDIN...JEFFERSON...AND ORANGE COUNTIES MONDAY... AT 2 PM...SEA BREEZE STILL WITHIN 10 MILES OF CAST...NO PRECIP YET... BUT COULD SEE AN ISOLATED SHOWER OR T-STORM LATER THIS AFTERNOON. DO NOT EXPECT ANY TO LAST INTO THE EVENING...SO NOT PLANNING ON ADDING POPS TO THE TONIGHT PERIOD. OTHERWISE...PLENTY OF CONVECTION IN NE GULF...ASSOCIATED WITH SHORTWAVE ROTATING AROUND UPPER-LEVEL RIDGE OF HIGH PRESSURE. THIS ACTIVITY SHOULD NOT REACH THE LCH CWA UNTIL TUESDAY AT THE EARLIEST. PERSISTENCE LOOKS TO BE THE BEST FORECAST FOR THE NEXT 24 HOURS...BEFORE INCREASING THE POPS SLIGHTLY ON TUESDAY...AND LITTLE HIGHER FOR WED-FRI TIMEFRAME. STILL...NOT LOOKING AT BETTER THAN SCATTERED ACTIVITY THROUGH THIS WEEK. TEMPS STILL SHOULD HOLD IN THE MID 90S FOR HIGHS AND LOW TO MID 70S FOR LOWS. STILL NO HEAT ADVISORY CRITERIA BEING MET OR EXPECTED FOR THE NEXT WEEK. .LCH...NONE. .PRELIMINARY NUMBERS... AEX 72/96 72/96 72/96 010213 BPT 75/93 75/93 75/93 010213 LCH 74/93 74/93 74/93 010213 LFT 74/93 74/93 74/93 010213
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 8:29 PM CDT | Severe Thunderstorm Warning | LCH | Rapides | 61 min |
| Jul 22, 5:45 PM CDT | Severe Thunderstorm Warning | LCH | Rapides | 60 min |
| Jul 22, 6:28 PM CDT | Severe Thunderstorm Warning | LCH | Vernon | 62 min |
| Jul 22, 6:44 PM CDT | Severe Thunderstorm Warning | LCH | Rapides | 61 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2002Every severe thunderstorm warning in 2002
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.