Alert archive / Louisiana / Flash Flood Warnings in 1986

Flash Flood Warning 15, NWS Shreveport, LA

June 9, 1986Bossier Parish, Caddo Parish, Louisiana

NWS Shreveport, LA issued this flash flood warning at Jun 9, 1986, 1:40 PM CDT for Bossier Parish, Caddo Parish, Louisiana. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 9, 1986, 1:40 PM CDT (18:40 UTC)
Expired
Jun 9, 1986, 4:30 PM CDT
In force
3 hr
Issued by
NWS Shreveport, LA
Area
Whole counties

Counties Bossier Parish, LA, Caddo 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

Longview/Gregg, TX (KGGG), launched 12:00Z, 6.7 hours before the alert went out and 86 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 12:00Z on 1986-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 312 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 12:00Z on 1986-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
312 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
564 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 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, Jun 9, 7:53 AM CDT, 5 hours 47 minutes before
SPECIAL WEATHER AND FLOOD STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
730 AM CDT MON JUN 9 1986

LOW AREA FLOODING CONTINUES TO DEVELOP OVER THE SOUTHERN PART OF NORTH
EAST TEXAS...ACROSS THE NORTHWEST SECTIONS OF LOUISIANA...INCLUDING THE
SHREVEPORT/BOSSIER CITY METROPOLITAN AREA INTO THE IMMEDIATE ADJACENT
AREA OF SOUTH ARKANSAS.

REPORTS THROUGH 7 AM THIS MORNING AND RADAR INDICATIONS ARE THAT FROM
TWO TO OVER THREE INCHES OF RAIN HAS OCCURRED OVER PARTS OF SHELBY
AND PANOLA COUNTIES IN NORTHEAST TEXAS AND THE SOUTHEAST SECTIONS OF
HARRISON AND ACROSS PARTS OF CADDO...BOSSIER...WEBSTER ALONG WITH
NORTHERN DESOTO AND WESTERN CLAIBORNE PARISHES IN NORTHWEST LOUISIANA
INCLUDING THE SHREVEPORT/BOSSIER CITY METROPOLITAN AREA.

SEVERAL STREETS IN THE SHREVEPORT BOSSIER CITY AREA ARE FLOODING IN
LOW AREAS...AND NO DOUBT SOME ROADWAY FLOODING IS DEVELOPING IN LOW
AREAS ACROSS THE SOUTHERN SECTIONS OF NORTHEAST TEXAS ACROSS EXTREME
NORTHWEST LOUISIANA.

MOTORIESTS ARE ADVISED NOT TO ATTEMPT TO DRIVE THROUGH FLOODED ROAD
WAYS..BE AWARE OF RISING WATER IN LOW AREAS DUE TO POSSBLE SMALL
STREAM OVERFLOW.

ALTHOUGH THE RAINFALL RATE HAS BEEN MAINLY MODERATE DURING THE NIGHT
OVER THE AREA...THE COMBINATION OF TWO TO OVER THREE INCHES OF RAIN
OVER THE PAST FIVE HOURS ALONG WITH SATURATED GROUND AND ABOVE NORMAL
FLOWS ON AREA STREAMS WILL CONTINUE THE THREAT OF LOW AREA FLOODING
THIS MORNING AS RAIN AND SHOWERS WILL CONTINUE OVER THE SAME GENERAL
AREA.

AT 730 AM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT WAS
SHOWING A 40 MILE WIDE AREA OF NUMEORUS SHOWERS AND ISOLATED THUNDER
STORMS FROM CAMDEN IN SOUTHWEST ARKANSAS ACROSS THE MAGNOLIA AREA..
SOUTHWEST ACROSS THE SHREVEPORT AREA TO NORTHWEST OF CENTER TEXAS.

MOVMENT CONTINUES NORTHEAST ACROSS THE SAME GENERAL AREA THUS RAINFALL
TOTALS OF OVER THREE INCHES AND POSSIBLY FOUR WILL HAVE OCCURRED BY
9AM THIS MORNING.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 8:00 AM CDTFlash Flood WarningSHVBossier, Caddo3 hr
Jun 9, 10:10 AM CDTFlash Flood WarningSHVCaddo2 hr
Jun 9, 10:10 AM CDTFlash Flood WarningSHVBossier2 hr
Jun 9, 12:20 PM CDTFlash Flood WarningSHVDe Soto3 hr
Jun 9, 8:00 AM CDTFlash Flood WarningSHVPanola, Shelby3 hr
Jun 9, 10:10 AM CDTFlash Flood WarningSHVShelby2 hr

Nearby

Flash Flood Warnings in Louisiana, 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.