Alert archive / Louisiana / Flash Flood Warnings in 1998
Flash Flood Warning 58, NWS Lake Charles, LA
NWS Lake Charles, LA issued this flash flood warning at Sep 13, 1998, 3:10 PM CDT for Acadia Parish, Vermilion Parish, Louisiana. It was in force for 2 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
- Sep 13, 1998, 3:10 PM CDT (20:10 UTC)
- Expired
- Sep 13, 1998, 5:15 PM CDT
- In force
- 2 hr
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties
Counties Acadia Parish, LA, Vermilion Parish, LA
The radar
The Lake Charles radar (KLCH), 83 km from the middle of the area, began a volume at 20:12 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
Slidell Radar S, LA (KSIL), launched 12:00Z, 8.2 hours before the alert went out and 257 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
- 221 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 734 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLCH 132012 FFWLCH LAC001-113-132215- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAKE CHARLES LA 310 PM CDT SUN SEP 13 1998 THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A * FLASH FLOOD WARNING FOR... ACADIA PARISH IN SOUTHWESTERN LOUISIANA VERMILION PARISH IN SOUTHWESTERN LOUISIANA * UNTIL 515 PM CDT * AT 307 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED THAT 2 TO 4 INCHES OF RAIN HAS FALLEN ACROSS VERMILION AND ACADIA PARISHES DURING THE PAST 3 HOURS. 2 TO 3 INCHES OF ADDITIONAL RAINFALL IS EXPECTED ACROSS THE AREA OVER THE NEXT FEW HOURS . * FLOODING OF ROADS AND LOW LYING AREAS CAN BE EXPECTED. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD TO UNKNOWN DEPTHS. THE DEPTH OF THE WATER MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. REMEMBER...MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES.
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 Sep 13, 2:49 PM CDT, 21 minutes earlier.
Area forecast discussion, Sep 13, 2:49 PM CDT, 21 minutes before
SOUTHEAST TEXAS..SOUTHWEST AND CENTRAL LOUISIANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA...ADJUST POPS UPWARD TNITE. 249 PM CDT SUN SEP 13 1998 CONCERN TONIGHT IS WHETHER HEAVY PCPN BANDS WILL CONTINUE. SINCE SATELLITE SHOWING CONTINUED CONVECTIVE ACTIVITY OVER CENTRAL GULF UPSTREAM FROM THE AREA AND WITH SATURATED GROUND...AFTER COORD WITH SIL AND SAT...SUGGEST KEEPING FLOOD WATCHES UP FOR ENTIRE AREA. ETA MODEL SEEMS MORE REASONABLE ON KEEPING ONSHORE FLOW INTO MONDAY MORNING. REMAINS OF FRANCES DRIFTING NORTH IN NE TX WITH ASSOCIATED BANDS OF TROPICAL TYPE RAINS FEEDING IN FROM THE GULF. WILL STAY CLOSE TO MOS TNITE ON POPS DUE TO GULF ACTIVITY BUT WITH ETA SHOWING TENDANCY TOWARD LOW LEVEL RIDGING AND THETA TROFFING WITH RESULTING INCREASING STABILITY...WAS WILLING TO DECREASE POPS FROM MOS STARTING MONDAY. MRF AND ETA SHOWING NEXT TROPICAL WAVE ENTERING EASTERN GULF ON TUES...BEARS WATCHING. GOING WITH CLOUD COVER AND ONSHORE FLOW SO MODIFIED TEMPS VS MOS ACCORDINGLY...COOLER DAY TEMPS...WARMER NIGHTS. 11 BPT 78/85/77/87 6324 LCH 78/86/75/86 5213 LFT 77/86/72/86 4113 AEX 77/84/72/84 4112
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 13, 3:17 AM CDT | Flash Flood Warning | LCH | Beauregard, Calcasieu | 118 min |
| Sep 13, 1:55 PM CDT | Flash Flood Warning | LCH | Vermilion | 2 hr |
Nearby
Flash Flood Warnings in Louisiana, 1998Every flash flood warning in 1998
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.