Alert archive / Texas / Flash Flood Warnings in 1986

Flash Flood Warning 9, NWS Lake Charles, LA

December 22, 1986Jefferson County, Texas

NWS Lake Charles, LA issued this flash flood warning at Dec 22, 1986, 6:55 PM CST for Jefferson County, Texas. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued
Dec 22, 1986, 6:55 PM CST (00:55 UTC)
Expired
Dec 23, 1986, 9:00 AM CST
In force
14 hr
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Jefferson County, TX

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 00:00Z, 0.9 hours before the alert went out and 96 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 00:00Z on 1986-12-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 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 00:00Z on 1986-12-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
523 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
349 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.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Dec 22, 4:57 PM CST, 1 hour 58 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
455 PM CST MON DEC 22 1986

AT 430 PM...WIDESPREAD RAIN CONTINUED THROUGHOUT MOST OF LOUISIANA
AND EAST TEXAS. THE RAIN WAS SHOWN SOUTH OF A LINE FROM NATCHEZ
MISSISSIPPI TO MANSFIELD TO LAKE LIVINGSTON TEXAS...AND INTO THE
GULF TO 100 MILES OFFSHORE.

DUE TO THE CONTINUOUS RAIN SINCE LAST NIGHT IN SOUTHWEST LOUISIANA...
SOME STREETS WITH POOR DRAINAGE AND LOW LYING AREAS HAVE BECOME
FLOODED.  MOST DRAINAGE DITCHES ARE NEARLY FULL AND ADDITIONAL RAINS
THAT ARE EXPECTED TONIGHT WILL ADD TO THE FLOODING...ESPECIALLY IN
LAKE CHARLES.

MOTORISTS SHOULD USE CAUTION AND ALLOW EXTRA TIME FOR SHOPPING
TONIGHT.
Special weather statement, Dec 22, 5:50 PM CST, 1 hour 5 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
550 PM CST MON DEC 22 1986

AT 530 PM...WIDESPREAD RAIN WITH HEAVY THUNDERSHOWERS MIXED IN
CONTINUED IN MOST OF LOUISIANA AND EAST TEXAS. THE RAIN WAS SHOWN
SOUTH OF A LINE FROM NATCHEZ MISSISSIPPI TO WINNFIELD TO LAKE
LIVINGSTON TEXAS...AND EXTENDED INTO THE GULF TO 100 MILES OFFSHORE.

THE HEAVIEST ACTIVITY WAS SHOWN NEAR NEW IBERIA...WHITE LAKE...SABINE
PASS AND GALVESTON TEXAS.

MOVEMENT WAS NORTHEAST AT 20 MPH.

FLOODING OF STREETS...DRAINAGE DITCHES AND LOW LYING AREAS HAS ALREADY
OCCURRED IN SOUTHWEST LOUISIANA IN LAKE CHARLES. MINOR STREET FLOODING
HAS BEEN REPORTED IN LAFAYETTE AND ABBEVILLE DURING THE PAST HOUR.

WITH ADDITIONAL RAINFALLS OVER SOUTHWEST LOUISIANA...SOME STREETS WITH
POOR DRAINAGE WILL LIKELY FLOOD IN EVANGELINE...JEFF DAVIS...ACADIA...
LAFAYETTE...AND VERMILION PARISHES BY LATE TONIGHT.

MOTORISTS THROUGHOUT SOUTHWEST LKOUISIANA SHOULD USE CAUTION AND
BE ALERT FOR WATER COVERED STREETS AND ROADWAYS.
Special weather statement, Dec 22, 6:41 PM CST, 14 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
645 PM CST MON DEC 22 1986

AT 625 PM...WIDESPREAD RAIN WITH HEAVY THUNDERSHOWERS MIXED IN
CONTINUED IN MOST OF LOUISIANA AND EAST TEXAS. THE RAIN WAS SHOWN
SOUTH OF A LINE FROM NATCHEZ MISSISSIPPI TO WINNFIELD TO LUFKIN
TEXAS...AND EXTENDED INTO THE GULF TO 80 MILES OFFSHORE.

THE HEAVIEST ACTIVITY WAS SHOWN NEAR NEW IBERIA...GALVESTON TEXAS...
AND IN THE COASTAL WATERS SOUTH OF VERMILION BAY...SABINE PASS AND
HIGH ISLAND TEXAS.

MOVEMENT WAS NORTHEAST AT 20 MPH.

SOME FLOODING OF STREETS AND OTHER LOW LYING AREAS IS LIKELY THROUGHOUT
MOST SECTIONS OF SOUTHWEST LOUISIANA BY LATE TONIGHT AS RAIN WILL
LIKELY CONTINUE UNTIL AT LEAST 10 PM IN THIS AREA.

Nearby

Flash Flood Warnings in Texas, 1986Every flash flood warning in 1986

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.