Alert archive / Louisiana / Flash Flood Warnings in 1997
Flash Flood Warning 21, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood warning at Mar 2, 1997, 5:00 AM CST for Bossier Parish, Caddo Parish, Webster Parish, Louisiana. It was in force for 4 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
- Mar 2, 1997, 5:00 AM CST (11:00 UTC)
- Expired
- Mar 2, 1997, 9:00 AM CST
- In force
- 4 hr
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
Counties Bossier Parish, LA, Caddo Parish, LA, Webster Parish, LA
The radar
The Shreveport radar (KSHV), 32 km from the middle of the area, began a volume at 11:03 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
Shreveport, LA (KSHV), launched 00:00Z, 11.0 hours before the alert went out and 24 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
- 1945 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 487 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 133 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 2.0
- Supercell composite
- 7.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSHV 021101 FFWSHV LAC015-017-027-031-119-TXC347-073-365-419-021500- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SHREVEPORT LA 500 AM CST SUN MAR 2 1997 THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 900 AM CST FOR THE FOLLOWING AREAS... IN NORTHWEST LOUISIANA ...BOSSIER PARISH...CADDO PARISH...CLAIBORNE PARISH ...DE SOTO PARISH...WEBSTER PARISH IN EAST TEXAS ...NACOGDOCHES COUNTY IN NORTHEAST TEXAS ...CHEROKEE COUNTY...PANOLA COUNTY...SHELBY COUNTY AT 500 AM CST DOPPLER RADAR IN SHREVEPORT SHOWED A LARGE AREA OF SHOWERS AND THUNDERSTORMS OVER NORTHEAST TEXAS...NORTHWEST LOUISIANA AND SOUTHWEST ARKANSAS. THE AREA WAS ABOUT 80 MILES WIED AND EXTENDED GENERALLY SOUTHEAST OF A LINE FROM NEAR HOT SPRINGS SOUTHWEST TO NEAR FOUKE ARKANSAS AND INTO NORTHEAST TEXAS TO NEAR LONGVIEW AND TYLER. WITHIN THE LARGE AREA VERY HEAVY RAINFALL WITH AMOUNTS OF 1 TO 1 1/2 INCH PER HOUR WERE OCCURRING OVER NORTWHEST LOUISIANA AND NORTHEAST TEXAS FROM NEAR SPRING HILL AND HOMER LOUISIANA SOUTHWEST ACROSS SHREVEPORT/BOSSIER CITY AND INTO NORTHEAST TEXAS TO NEAR CARTHAGE...MOUNT ENTERPRISE...AND ALTO. THE SHOWERS AND THUNDERSTORMS CONTINUED TO DEVELOP AND SPREAD OVER THE SAME GENRAL AREA AT ABOUT 30 MPH. THIS REGION HAS HAD HEAVY RAINFALL OVER THE PAST COUPLE OF DAYS AND SOILS HAVE REACHED SATURATION WITH WATER RUNOFF RESULTING IN FLOODING AND CAUSING RIVERS...LAKES...AND BAYOUS TO RUN HIGH WITH SOME OUT OF BANKS. MANY ROADS WILL BE FLOODED AND THERE WILL BE ROAD WASHOUTS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED IMMEDIATELY. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. SIX
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 2, 12:10 AM CST | Flash Flood Warning | SHV | Bienville, Claiborne, Webster | 4 hr |
| Mar 2, 1:03 AM CST | Flash Flood Warning | SHV | Union | 4 hr |
| Mar 2, 5:00 AM CST | Flash Flood Warning | SHV | De Soto | 4 hr |
| Mar 2, 5:00 AM CST | Flash Flood Warning | SHV | Claiborne | 4 hr |
| Mar 2, 6:21 AM CST | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 39 min |
| Mar 2, 9:27 AM CST | Flash Flood Warning | SHV | Bienville, Claiborne, Lincoln, Union, Webster | 4 hr |
| Mar 2, 9:27 AM CST | Flash Flood Warning | SHV | Bossier, De Soto, Red River | 4 hr |
| Mar 2, 10:44 AM CST | Flash Flood Warning | SHV | Caddo | 4 hr |
| Mar 2, 11:41 AM CST | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 49 min |
| Mar 2, 12:28 PM CST | Tornado Warning | SHV | Claiborne, Webster | 32 min |
Nearby
Flash Flood Warnings in Louisiana, 1997Every flash flood warning in 1997
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.