Alert archive / Louisiana / Flash Flood Warnings in 1991

Flash Flood Warning 68, NWS Shreveport, LA

April 19, 1991Morehouse Parish, Ouachita Parish, Union Parish, Louisiana

NWS Shreveport, LA issued this flash flood warning at Apr 19, 1991, 4:21 PM CDT for Morehouse Parish, Ouachita Parish, Union Parish, Louisiana. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Apr 19, 1991, 4:21 PM CDT (21:21 UTC)
Expired
Apr 19, 1991, 7:30 PM CDT
In force
3 hr
Issued by
NWS Shreveport, LA
Area
Whole counties

Counties Morehouse Parish, LA, Ouachita Parish, LA, Union Parish, LA

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 9.4 hours before the alert went out and 195 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, Jackson, MS at 12:00Z on 1991-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 49 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, Jackson, MS at 12:00Z on 1991-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
49 J/kg
Mixed-layer CIN
-222 J/kg
Mixed-layer LCL
923 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Apr 19, 12:26 PM CDTSevere Thunderstorm WarningSHVBossier, Caddo64 min
Apr 19, 1:15 PM CDTFlash Flood WarningSHVBossier, Caddo2 hr
Apr 19, 1:15 PM CDTFlash Flood WarningSHVDe Soto2 hr
Apr 19, 1:29 PM CDTSevere Thunderstorm WarningSHVDe Soto61 min
Apr 19, 1:29 PM CDTSevere Thunderstorm WarningSHVWebster61 min
Apr 19, 1:33 PM CDTSevere Thunderstorm WarningSHVBossier, Caddo57 min
Apr 19, 2:48 PM CDTFlash Flood WarningSHVBienville, Webster93 min
Apr 19, 3:11 PM CDTSevere Thunderstorm WarningSHVBienville, Jackson64 min
Apr 19, 3:11 PM CDTSevere Thunderstorm WarningSHVClaiborne64 min
Apr 19, 3:46 PM CDTSevere Thunderstorm WarningSHVUnion89 min
Apr 19, 4:21 PM CDTSevere Thunderstorm WarningSHVMorehouse, Ouachita, Union3 hr
Apr 19, 4:41 PM CDTSevere Thunderstorm WarningSHVEast Carroll, Madison, Richland, West Carroll2 hr
Apr 19, 6:01 PM CDTSevere Thunderstorm WarningSHVTensas29 min
Apr 19, 10:06 AM CDTSevere Thunderstorm WarningSHVPanola, Rusk69 min
Apr 19, 10:52 AM CDTSevere Thunderstorm WarningSHVHarrison38 min
Apr 19, 11:15 AM CDTSevere Thunderstorm WarningSHVPanola60 min
Apr 19, 12:41 PM CDTFlash Flood WarningSHVPanola3 hr

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.