Alert archive / Mississippi / Flash Flood Warnings in 1987

Flash Flood Warning 13, NWS Jackson, MS

September 17, 1987Lincoln County, Mississippi

NWS Jackson, MS issued this flash flood warning at Sep 17, 1987, 2:36 PM CDT for Lincoln County, Mississippi. It was in force for 49 min.

The area

The counties it named.

The facts

Issued
Sep 17, 1987, 2:36 PM CDT (19:36 UTC)
Expired
Sep 17, 1987, 3:25 PM CDT
In force
49 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Lincoln County, MS

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 12:00Z, 7.6 hours before the alert went out and 94 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 12:00Z on 1987-09-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1763 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 12:00Z on 1987-09-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 122 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
1763 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
567 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KJAN 171936
FFWJAN
MSC085-172130-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
236 PM CDT THU SEP 17 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL  430 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTHWEST MISSISSIPPI
          ...LINCOLN
 
AT 230 PM...MINOR FLOODING WAS REPORTED IN BROOKHAVEN. THUNDERSTORMS
WITH VERY HEAVY RAIN CONTINUE ACROSS LINCOLN COUNTY AND THE STORMS
ARE SHOWING NO SIGNS OF MOVING.
 
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 17, 3:49 PM CDTSevere Thunderstorm WarningJANWalthall26 min

Nearby

Flash Flood Warnings in Mississippi, 1987Every flash flood warning in 1987

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.