Alert archive / Louisiana / Flash Flood Warnings in 1997

Flash Flood Warning 21, NWS Shreveport, LA

March 2, 1997Bossier Parish, Caddo Parish, Webster Parish, Louisiana

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.

Skew-T log-pSkew-T log-p diagram, Shreveport, LA at 00:00Z on 1997-03-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1945 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 00:00Z on 1997-03-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

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.

IssuedProductOfficeCountiesLasted
Mar 2, 12:10 AM CSTFlash Flood WarningSHVBienville, Claiborne, Webster4 hr
Mar 2, 1:03 AM CSTFlash Flood WarningSHVUnion4 hr
Mar 2, 5:00 AM CSTFlash Flood WarningSHVDe Soto4 hr
Mar 2, 5:00 AM CSTFlash Flood WarningSHVClaiborne4 hr
Mar 2, 6:21 AM CSTSevere Thunderstorm WarningSHVBossier, Caddo39 min
Mar 2, 9:27 AM CSTFlash Flood WarningSHVBienville, Claiborne, Lincoln, Union, Webster4 hr
Mar 2, 9:27 AM CSTFlash Flood WarningSHVBossier, De Soto, Red River4 hr
Mar 2, 10:44 AM CSTFlash Flood WarningSHVCaddo4 hr
Mar 2, 11:41 AM CSTSevere Thunderstorm WarningSHVBossier, Caddo49 min
Mar 2, 12:28 PM CSTTornado WarningSHVClaiborne, Webster32 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.