Alert archive / Louisiana / Flash Flood Warnings in 1989

Flash Flood Warning 65, NWS Shreveport, LA

June 29, 1989Winn Parish, Louisiana

NWS Shreveport, LA issued this flash flood warning at Jun 29, 1989, 7:49 AM CDT for Winn Parish, Louisiana. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jun 29, 1989, 7:49 AM CDT (12:49 UTC)
Expired
Jun 29, 1989, 11:45 AM CDT
In force
4 hr
Issued by
NWS Shreveport, LA
Area
Whole counties

County Winn 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 0.8 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, Lake Charles Mun, LA at 12:00Z on 1989-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 464 joules per kilogram.LCLEL10008507005003002001001 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, Lake Charles Mun, LA at 12:00Z on 1989-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -64 square meters per square second.193958Sfc1 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
464 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
607 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-64 m²/s²
0-3 km storm-relative helicity
-153 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
Jun 28, 9:04 PM CDTFlash Flood WarningSHVNatchitoches, Winn4 hr
Jun 28, 10:48 PM CDTFlash Flood WarningSHVBienville, Jackson2 hr
Jun 28, 10:48 PM CDTFlash Flood WarningSHVDe Soto, Sabine2 hr
Jun 28, 10:48 PM CDTFlash Flood WarningSHVRed River2 hr
Jun 29, 7:49 AM CDTFlash Flood WarningSHVNatchitoches, Sabine4 hr
Jun 29, 11:45 AM CDTFlash Flood WarningSHVNatchitoches, Winn3 hr
Jun 29, 11:45 AM CDTFlash Flood WarningSHVSabine3 hr
Jun 29, 2:45 PM CDTFlash Flood WarningSHVNatchitoches, Winn5 hr
Jun 29, 2:45 PM CDTFlash Flood WarningSHVSabine5 hr
Jun 29, 6:48 PM CDTSevere Thunderstorm WarningSHVRichland57 min

Nearby

Flash Flood Warnings in Louisiana, 1989Every flash flood warning in 1989

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.