Alert archive / Mississippi / Flash Flood Warnings in 1987

Flash Flood Warning 14, NWS Mobile, AL

August 14, 1987Harrison County, Stone County, Mississippi

NWS Mobile, AL issued this flash flood warning at Aug 14, 1987, 1:07 PM CDT for Harrison County, Stone County, Mississippi. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Aug 14, 1987, 1:07 PM CDT (18:07 UTC)
Expired
Aug 14, 1987, 5:00 PM CDT
In force
4 hr
Issued by
NWS Mobile, AL
Area
Whole counties

Counties Harrison County, MS, Stone 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

Boothville, LA (KBVE), launched 12:00Z, 6.1 hours before the alert went out and 144 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, Boothville, LA at 12:00Z on 1987-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2780 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, Boothville, LA at 12:00Z on 1987-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -38 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
2780 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
567 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-38 m²/s²
0-3 km storm-relative helicity
-18 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMOB 141807
FFWMOB
MSC047-131-142200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
107 PM CDT FRI AUG 14 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 500 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES IN

SOUTHEAST MISSISSIPPI...HARRISON...AND STONE

AT 105 PM CDT RADAR SHOWS VERY HEAVY RAINFALL CONTINUING ACROSS THE
NORTHEASTERN HALF OF STONE COUNTY AND THE NORTHEAST PORTION OF
HARRISON COUNTY.  MANY CREEKS AND STREAMS ARE ON THE RISE IN THESE
COUNTIES....AND LOW LYING AREAS ARE BEGINNING TO FLOOD OR ARE ALREADY
FLOODED IN SOME AREAS.  A VERY PERSISTENT LINE OF THUNDERSTORMS
EXTENDING FROM NEAR THE CITY OF JACKSON TO NEAR WIGGINS AND ON INTO
THE EXTREME SOUTHEAST CORNER OF MISSISSIPPI IS POSING A DANGEROUS
FLASH FLOOD THREAT TO HARRISON AND STONE COUNTIES.
DO NOT DRIVE INTO FLOOD WATERS...IT COULD MEAN YOUR LIFE.

PERSONS IN FLOOD PRONE AREAS SHOULD TAKE ACTION TO PROTECT LIFE AND
PROPERTY IMMEDIATELY.

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

Local storm report, Aug 14, 9:46 AM CDT, 3 hours 21 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
945 AM CDT FRI AUG 14 1987

...FLOODING IN JACKSON COUNTY MISSISSIPPI...

THE JACKSON COUNTY CIVIL DEFENSE DIRECTOR REPORTED A FEW MINUTES AGO
THAT RAINFALL AMOUNTS IN JACKSON COUNTY SINCE MIDNIGHT ARE ESTIMATED
TO BE 6 INCHES GENERALLY OVER MOST OF THE COUNTY WITH JUST A LITTLE
OVER 4 INCHES MEASURED AT OCEAN SPRINGS.

ROADS WERE CLOSED IN VAN CLEAVE...AROUND ORANGE GROVE AND THE
FRANKLIN CREEK COMMUNITY...ALL IN THE SOUTHEAST PART OF THE COUNTY.

ALSO REPORTED WERE JUST A FEW INSTANCES OF WATER RISING INTO HOMES
IN SCATTERED LOCATIONS AROUND THE COUNTY.
Local storm report, Aug 14, 10:32 AM CDT, 2 hours 35 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
1030 AM CDT FRI AUG 14 1987

A MOBILE COUNTY SHERIFFS DEPUTY REPORTED A FEW MINUTES AGO THAT
A FOOT OF WATER WAS OVER THE ROAD LEADING TO THE WEST END (OF
DAUHPIN ISLAND AND SEVERAL AUTOMOBILES HAVE DROWNED OUT ALONG THE
ROAD.  TRAFFIC TO THE WEST END OF THE ISLAND IS NOW BEING SEVERELY
LIMITED AS HEAVY RAIN IS STILL FALLING OVER THAT PORTION OF THE
ISLAND.

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 14, 8:15 AM CDTFlash Flood WarningMOBJackson3 hr
Aug 14, 10:55 AM CDTFlash Flood WarningMOBJackson3 hr
Aug 14, 2:20 PM CDTFlash Flood WarningMOBJackson3 hr
Aug 14, 5:00 PM CDTFlash Flood WarningMOBHarrison, Jackson3 hr

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.