Alert archive / Louisiana / Flash Flood Warnings in 1986
Flash Flood Warning 28, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood warning at Jun 27, 1986, 8:15 AM CDT for De Soto Parish, Louisiana; Panola County, Texas. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Jun 27, 1986, 8:15 AM CDT (13:15 UTC)
- Expired
- Jun 27, 1986, 11:30 PM CDT
- In force
- 15 hr
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
Counties De Soto Parish, LA, Panola 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
Longview/Gregg, TX (KGGG), launched 12:00Z, 1.3 hours before the alert went out and 61 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.
- Mixed-layer CAPE
- 682 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 715 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 207 m²/s²
- 0-3 km storm-relative helicity
- 303 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 5.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSHV 271325
FFWSHV
TXC365-203-067-037-ARC091-073-LAC017-031-015-119-271630-
BULLETIN...EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
815 AM CDT FRI JUN 27 1986
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE
UNTIL 1130 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES/PARISHES
IN NORTHEAST TEXAS...NORTHEAST HALF OF PANOLA..HARRISON..MARION..CASS
AND THE SOUTHERN TWO THIRDS OF BOWIE.
IN NORTHWEST LOUISIANA...NORTHWEST HALF OF DESOTO...CADDO...BOSSIER AND
WEBSTER...THIS INCLUDES THE SHREVEPORT/BOSSIER
CITY METROPOLIAN AREA.
IN SOUTHWEST ARKANSAS...SOUTHERN HALF OF MILLER AND LAFAYETTE
FLOODING CONTINUES OVER THE NORTHWEST LOUISIANA PARISHES OF DESOTO...
CADDO..BOSSIER AND PARTS OF WEBSTER AND IN THE NORTHEAST TEXAS COUNTIES
OF PANOLA...HARRISON...MARION AND CASS. MAJOR FLOODING REPORTED IN SOME
AREAS WITH NUMEROUS ROADS CLOSED...INCLUDING SOME MAJOR ROADWAYS..BAYOUS
ARE IN FLOOD...WITH MAJOR FLOODING IN LOW LYING AREAS ALONG THE BAYOU
SYSTEMS...INCLUDING THE SHREVEPORT METROPOLITAN AREA...IN THE MARSHALL
AREA...AND THE JEFFERSON TEXAS AREA.
FLOODING WILL DEVELOP NORTH AND NORTHEASTWARD INTO BOWIE COUNTY TEXAS
AND PARTS OF MILLER AND LAFAYETTE COUNTIES IN SOUTWEST ARKANSAS.
INDICATIONS ARE THE REMNANTS OF BONNIE HAS PRODUCED EXCESSIVE RAINFALL
OVERNIGHT OVER EXTREME NORTHWEST LOUISIANA AND THE ADJANCENT AREAS OF
NORTHEAST TEXAS. RAINFALL HAS EXCEED FOUR INCHES OVER MUCH OF DESOTO
...CADDO...BOSSIER AND WEBSTER PARISHES IN NORTHWEST LOUISIANA AND OVER
NORTHERN SHELBY...PANOLA...HARRISON...MARION AND CASS COUNTIES IN NORTH
EAST TEXAS. RAINFALL OF FIVE TO SEVEN INCHES HAS OCCURRED IN SEVERAL
LOCATIONS AND WILL EXCEED EIGHT INCHES IN SOME AREAS BY MID MORNING.
A FEW REPORTS...NWS SHREVEPORT 6.42 INCHES...KEITHVILLE LOUISIANA 7.17
INCHES...JEFFERSON TEXAS 6.78 INCHES...NORTH BOSSIER CITY 6.58 INCHES
...BETHANY TEXAS 7.37 INCHES. SEVERAL REPORTS OF OVER FIVE INCHES.
MAJOR FLOODING WILL CONTINUE TO DEVELOP ON THE SMALL STREAM AND BAYOU
SYSTEMS THIS MORNING THROUGHOUT THE WARNED AREA...ADDITIONAL RAODWAYS
WILL BE AFFECTED...AND LARGE BAYOUS WILL OVERFLOW AND CONTINUE IN FLOOD
TODAY.
MOTORISTS ARE URGED NOT TO DRIVE THROUGH FLOOD WATERS..MANY ROADS ARE
IMPASSABLE. RESIDENTS ALONG THE BAYOUS SYSTEMS SHOULD REMAKN ALERT FOR
RISING WATER THOUGHOUT THE DAY IN THE LOWER REACH OF THESE SYSTEMS.
AT 815 AM CDT THE WEATHER SERVICE RADAR INDICATED WIDESPREAD SHOWERS
OVER NORTHWEST AND NORTHCENTRAL LOUISIANA ACROSS THE EASTERN TIER OF
NORTHEAST TEXAS COUNTIES INTO THE ADJACENT AREA OF SOUTHWEST ARKANSAS.
WITHIN THE LARGE RAIN AND SHOWER MASS...BANDS OF HEAVY SHOWERS AND
THUNDERSTORMS PRODUCING ADDITIONAL HEAVY RAINFALL WERE LOCATED FROM
THE MINDEN AND HOMER AREA OF NORTHWEST LOUISIANA ACROSS THE NORTHERN
SECTIONS OF THE SHREVEPORT ARE TO NORTHEAST OF MARSHALL TO THE
JEFFERSON TEXAS AREA TO 20 MILES SOUTHWEST OF TEXARKANA. ONLY A SLOW
NORTHEAST DRIFT IS TAKING PLACE WITH THIS SYSTEM. SHOWERS AND HEAVY
THUNDERSTORMS CONTINUE TO MOVE ACROSS THE SAME GENERAL AREA.
SHOWERS AND THUNDERSTORMS WERE DECREASING SOUTHWEST OF A LINE FROM
MANSFIELD LOUISIANA TO NORTHEAST OF CARTHAGE TEXAS TO SOUTHWEST OF
JEFFERSON TEXAS...INCRESSING ALONG THE LOUISIANA/ARKANSAS BORDER
WEST INTO THE LINDEN TEXAS AREA.The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 2:30 AM CDT | Flash Flood Warning | SHV | Caddo, De Soto | 4 hr |
| Jun 27, 2:30 AM CDT | Flash Flood Warning | SHV | Bossier | 4 hr |
| Jun 27, 5:20 AM CDT | Flash Flood Warning | SHV | Bossier, Webster | 3 hr |
| Jun 27, 5:20 AM CDT | Flash Flood Warning | SHV | De Soto | 3 hr |
| Jun 27, 5:20 AM CDT | Flash Flood Warning | SHV | Caddo | 3 hr |
| Jun 27, 8:15 AM CDT | Flash Flood Warning | SHV | Caddo | 15 hr |
| Jun 27, 8:15 AM CDT | Flash Flood Warning | SHV | Bossier, Webster | 15 hr |
| Jun 26, 9:20 PM CDT | Flash Flood Warning | SHV | Panola | 3 hr |
| Jun 27, 4:40 AM CDT | Flash Flood Warning | SHV | Harrison | 4 hr |
| Jun 27, 7:30 AM CDT | Flash Flood Warning | SHV | Cass | 4 hr |
| Jun 27, 8:15 AM CDT | Flash Flood Warning | SHV | Bowie | 15 hr |
Nearby
Flash Flood Warnings in Louisiana, 1986Flash 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.