Alert archive / Louisiana / Flash Flood Warnings in 1990

Flash Flood Warning 77, NWS Shreveport, LA

May 31, 1990Caldwell Parish, Lincoln Parish, Ouachita Parish, Louisiana

NWS Shreveport, LA issued this flash flood warning at May 31, 1990, 7:15 PM CDT for Caldwell Parish, Lincoln Parish, Ouachita Parish, Louisiana. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
May 31, 1990, 7:15 PM CDT (00:15 UTC)
Expired
May 31, 1990, 9:45 PM CDT
In force
3 hr
Issued by
NWS Shreveport, LA
Area
Whole counties

Counties Caldwell Parish, LA, Lincoln Parish, LA, Ouachita Parish, LA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.3 hours before the alert went out and 210 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 00:00Z on 1990-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 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 00:00Z on 1990-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 square meters per square second.1939Sfc1 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
4 J/kg
Mixed-layer CIN
-287 J/kg
Mixed-layer LCL
1204 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
5 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
May 31, 7:15 PM CDTFlash Flood WarningSHVBienville, Jackson, Winn4 hr
May 31, 7:15 PM CDTFlash Flood WarningSHVDe Soto, Natchitoches, Red River, Sabine4 hr
May 31, 7:15 PM CDTFlash Flood WarningSHVRichland4 hr
May 31, 7:15 PM CDTFlash Flood WarningSHVBossier, Caddo3 hr
May 31, 7:15 PM CDTFlash Flood WarningSHVWebster3 hr
May 31, 7:15 PM CDTFlash Flood WarningSHVFranklin, Madison, Tensas3 hr

Nearby

Flash Flood Warnings in Louisiana, 1990Every flash flood warning in 1990

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.