Alert archive / Louisiana / Flash Flood Warnings in 1999
Flash Flood Warning 21, NWS Lake Charles, LA
NWS Lake Charles, LA issued this flash flood warning at Apr 4, 1999, 1:23 AM CST for Rapides Parish, Vernon Parish, Louisiana. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 4, 1999, 1:23 AM CST (07:23 UTC)
- Expired
- Apr 4, 1999, 5:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties
Counties Rapides Parish, LA, Vernon Parish, LA
The radar
The Ft Polk radar (KPOE), 11 km from the middle of the area, began a volume at 07:23 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 7.4 hours before the alert went out and 119 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
- 728 J/kg
- Mixed-layer CIN
- -290 J/kg
- Mixed-layer LCL
- 1318 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.6
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 flash flood 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 flash flood warning went out at Apr 3, 7:25 PM CST, 5 hours 58 minutes earlier.
Area forecast discussion, Apr 3, 7:25 PM CST, 5 hours 58 minutes before
SOUTHWEST...CENTRAL LOUISIANA AND SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA 725 PM CST SAT APR 3 1999 SQUALL LINE IS EXTENDING FROM 30 W KMLU TO NORTHERN LIBERTY COUNTY TEXAS ATTM. SHORT TERM CONCERN IS TRAINING ECHOES ACROSS INTERIOR SE TX. ISSUED A FFW FOR NORTHERN TYLER AS 88D ESTIMATES/REPORTS OF FOUR INCHES OF RAIN DURING HAVE FALLEN DURING LAST TWO HRS. THIS BACKBUILDING AREA SEEMS TO CORRELATE WELL WITH THICKNESS DIFFULENCE ETA ADVERTISES FOR 18-00Z. WILL BUMP POPS UP TO 80 FOR INTERIOR SE TX AND INCLUDE HEAVY RAINFALL PSBL 1ST PERIOD IN WRKLC1 TO REFLECT SLOW MVMT OF LINE. FOR COASTAL SE TX/SW LA...WIDELY SCT SHWRS/TSTMS AT BEST CURRENTLY AS 00Z LCH SOUNDING SHOWS GOOD INSTABILITY WITH CAPE OF 2565 J/KG BUT STILL CAPPED WITH CIN OF 175 J/KG. WILL LEAVE POPS ALONE FOR NOW AS LINE MOVES VERY SLOWLY SOUTHWARD. WILL KEEP TEMPS AS IS. 18 LCH WW 069/076/067/078 067 6534 LFT EW 069/077/066/079 067 4534 AEX TW 066/077/066/080 065 6534 BPT WW 069/077/068/079 067 5534
In the hours before
Special weather statement, Apr 3, 9:02 PM CST, 4 hours 21 minutes before
LAZ027>031-041-042-051-TXZ180>182-201-215-216-040400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAKE CHARLES LA 902 PM CST SAT APR 3 1999 ...TORNADO WATCH HAS EXPIRED FOR MUCH OF CENTRAL AND WESTERN LOUISIANA AND SOUTHEAST TEXAS... ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR AVOYELLES PARISH UNTIL MIDNIGHT... THE TORNADO WATCH THAT WAS ISSUED EARLIER THIS AFTERNOON FOR SOUTHEAST TEXAS AND MUCH OF WESTERN AND CENTRAL LOUISIANA HAS EXPIRED. HOWEVER...A NEW SEVERE THUNDERSTORM WATCH IS NOW IN EFFECT FOR AVOYELLES PARISH IN CENTRAL LOUISIANA UNTIL MIDNIGHT. STRONG TO SEVERE THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS NORTHERN SECTIONS OF SOUTHEAST TEXAS...WESTERN LOUISIANA AND CENTRAL LOUISIANA THIS EVENING AS A STRONG UPPER LEVEL DISTURBANCE MOVES ACROSS THE AREA. HEAVY RAIN WILL ALSO BE A MAJOR CONCERN WITH THESE THUNDERSTORMS. 3 TO 6 INCHES OF RAIN HAS FALLEN ACROSS NORTHERN SECTIONS OF SOUTHEAST TEXAS SINCE THIS AFTERNOON CAUSING FLOODING OF LOW LYING AREAS AND SECONDARY ROADS IN NORTHERN TYLER COUNTY. AN ADDITIONAL 2 TO 4 INCHES OF RAIN WILL BE POSSIBLE TONIGHT ACROSS SOUTHEAST TEXAS...CENTRAL AND WESTERN LOUISIANA. THIS MAY CAUSE ADDITIONAL FLOODING ACROSS THE AREA. STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Apr 3, 9:02 PM CST, 4 hours 21 minutes before
LAZ027>031-041-042-051-TXZ180>182-201-215-216-040400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAKE CHARLES LA 902 PM CST SAT APR 3 1999 ...TORNADO WATCH HAS EXPIRED FOR MUCH OF CENTRAL AND WESTERN LOUISIANA AND SOUTHEAST TEXAS... ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR AVOYELLES PARISH UNTIL MIDNIGHT... THE TORNADO WATCH THAT WAS ISSUED EARLIER THIS AFTERNOON FOR SOUTHEAST TEXAS AND MUCH OF WESTERN AND CENTRAL LOUISIANA HAS EXPIRED. HOWEVER...A NEW SEVERE THUNDERSTORM WATCH IS NOW IN EFFECT FOR AVOYELLES PARISH IN CENTRAL LOUISIANA UNTIL MIDNIGHT. STRONG TO SEVERE THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS NORTHERN SECTIONS OF SOUTHEAST TEXAS...WESTERN LOUISIANA AND CENTRAL LOUISIANA THIS EVENING AS A STRONG UPPER LEVEL DISTURBANCE MOVES ACROSS THE AREA. HEAVY RAIN WILL ALSO BE A MAJOR CONCERN WITH THESE THUNDERSTORMS. 3 TO 6 INCHES OF RAIN HAS FALLEN ACROSS NORTHERN SECTIONS OF SOUTHEAST TEXAS SINCE THIS AFTERNOON CAUSING FLOODING OF LOW LYING AREAS AND SECONDARY ROADS IN NORTHERN TYLER COUNTY. AN ADDITIONAL 2 TO 4 INCHES OF RAIN WILL BE POSSIBLE TONIGHT ACROSS SOUTHEAST TEXAS...CENTRAL AND WESTERN LOUISIANA. THIS MAY CAUSE ADDITIONAL FLOODING ACROSS THE AREA. STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 1:23 AM CST | Flash Flood Warning | LCH | Beauregard | 3 hr |
| Apr 4, 4:40 AM CDT | Severe Thunderstorm Warning | LCH | Rapides | 65 min |
| Apr 4, 7:58 AM CDT | Flash Flood Warning | LCH | Allen, Beauregard, Rapides, Vernon | 2 hr |
| Apr 4, 7:58 AM CDT | Flash Flood Warning | LCH | Avoyelles, Evangeline | 2 hr |
| Apr 4, 10:30 AM CDT | Flash Flood Warning | LCH | Beauregard | 4 hr |
| Apr 4, 3:59 PM CDT | Severe Thunderstorm Warning | LCH | Vernon | 61 min |
| Apr 4, 4:05 PM CDT | Tornado Warning | LCH | Vernon | 55 min |
| Apr 4, 5:38 PM CDT | Severe Thunderstorm Warning | LCH | Rapides | 47 min |
Nearby
Flash Flood Warnings in Louisiana, 1999Every flash flood warning in 1999
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; radar from the NEXRAD Level II archive.