Alert archive / Louisiana / Flash Flood Warnings in 1999
Flash Flood Warning 1, NWS Lake Charles, LA
NWS Lake Charles, LA issued this flash flood warning at Jan 7, 1999, 8:03 AM CST for Acadia 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
- Jan 7, 1999, 8:03 AM CST (14:03 UTC)
- Expired
- Jan 7, 1999, 11:00 AM CST
- In force
- 3 hr
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties
County Acadia Parish, LA
The radar
The Lake Charles radar (KLCH), 79 km from the middle of the area, began a volume at 14:04 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 12:00Z, 2.1 hours before the alert went out and 78 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
- 45 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 497 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 163 m²/s²
- 0-3 km storm-relative helicity
- 287 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 Jan 7, 2:36 AM CST, 5 hours 27 minutes earlier.
Area forecast discussion, Jan 7, 2:36 AM CST, 5 hours 27 minutes before
SOUTHWEST...CENTRAL LOUISIANA AND SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA 236 AM CST THU JAN 7 1999 THE LAGRANGIAN TRAJECTORY MODEL REVEALS STRONG ISENTROPIC LIFT WITH CONSEQUENT OVERRUNNING ACROSS THE FORECAST DOMAIN. RADAR SIGNATURE SUGGESTS THAT THE GULF MOISTURE IS FOCUSING ALONG A BEAUMONT-BATON ROUGE AXIS...IN CONTRAST TO THE RUC-2S SOLUTION ALONG A BEAUMONT-ALEXANDRIA AXIS. MESOSCALE UNDULATIONS IN THE MID TROPOSPHERE WESTERLIES ARE CROSSING OVER THE OVERRUNNING AIR MASS... EXCITING ISOLATED SHOWERS AND THUNDERSTORMS WITHIN THE WIDESPREAD RAIN. WITH THE CORE OF THE SUBTROPICAL JET REMAINING ACROSS THE LOUISIANA COASTAL WATERS...EXPECT THE DREARY WEATHER TO CONTINUE THROUGH FRIDAY. BY SATURDAY ARCTIC AIR WILL SPILL ACROSS TEXAS PUSHING A COLD FRONT ACROSS LOUISIANA. 21 LCH CE 070/060 072/056 056 543 LFT CE 070/060 073/057 057 543 AEX CE 064/059 070/053 053 543 BPT CE 070/060 070/055 055 543
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 7, 10:20 AM CST | Flash Flood Warning | LCH | Evangeline, Saint Landry | 3 hr |
| Jan 7, 10:20 AM CST | Flash Flood Warning | LCH | Lafayette, Saint Martin | 3 hr |
| Jan 7, 11:04 AM CST | Flash Flood Warning | LCH | Acadia, Jefferson Davis | 2 hr |
| Jan 7, 1:30 PM CST | Flash Flood Warning | LCH | Acadia, Evangeline, Jefferson Davis | 3 hr |
| Jan 7, 1:30 PM CST | Flash Flood Warning | LCH | Lafayette, Saint Landry, Saint Martin | 3 hr |
| Jan 7, 3:23 PM CST | Severe Thunderstorm Warning | LCH | Vernon | 47 min |
| Jan 7, 4:23 PM CST | Tornado Warning | LCH | Rapides, Vernon | 32 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.