Alert archive / Louisiana / Flash Flood Warnings in 1991

Flash Flood Warning 124, NWS Shreveport, LA

May 3, 19914 parishes in Louisiana

NWS Shreveport, LA issued this flash flood warning at May 3, 1991, 8:06 PM CDT for 4 parishes in Louisiana. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
May 3, 1991, 8:06 PM CDT (01:06 UTC)
Expired
May 4, 1991, 12:15 AM CDT
In force
4 hr
Issued by
NWS Shreveport, LA
Area
Whole counties

Counties Bienville Parish, LA, Claiborne Parish, LA, Lincoln Parish, LA, Union Parish, LA

The nearest sounding before it

Longview/Gregg, TX (KGGG), launched 00:00Z, 1.1 hours before the alert went out and 175 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, Longview/Gregg, TX at 00:00Z on 1991-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 437 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Longview/Gregg, TX at 00:00Z on 1991-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 168 square meters per square second.19395878Sfc1 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
437 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1035 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
168 m²/s²
0-3 km storm-relative helicity
276 m²/s²
Significant tornado parameter
0.4
Supercell composite
5.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 3, 8:06 PM CDTFlash Flood WarningSHVDe Soto, Natchitoches, Red River4 hr
May 3, 8:06 PM CDTFlash Flood WarningSHVJackson, Winn4 hr
May 3, 8:55 PM CDTSevere Thunderstorm WarningSHVSabine65 min
May 3, 9:02 PM CDTFlash Flood WarningSHVSabine3 hr
May 3, 9:47 PM CDTSevere Thunderstorm WarningSHVNatchitoches58 min
May 3, 10:40 PM CDTFlash Flood WarningSHVMorehouse, Ouachita2 hr
May 3, 10:40 PM CDTFlash Flood WarningSHVCaldwell2 hr
May 4, 12:17 AM CDTFlash Flood WarningSHVCaldwell, Franklin, Morehouse, Ouachita, Richland, West Carroll3 hr
May 4, 12:17 AM CDTFlash Flood WarningSHVWinn3 hr
May 4, 5:54 AM CDTFlash Flood WarningSHVMorehouse, Ouachita, Union3 hr
May 4, 6:57 PM CDTSevere Thunderstorm WarningSHVCass, Harrison, Marion93 min
May 4, 6:57 PM CDTSevere Thunderstorm WarningSHVGregg, Rusk93 min
May 4, 6:57 PM CDTSevere Thunderstorm WarningSHVBowie93 min

Nearby

Flash Flood Warnings in Louisiana, 1991Every flash flood warning in 1991

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.