Alert archive / Mississippi / Flash Flood Warnings in 1998

Flash Flood Warning 45, NWS New Orleans, LA

September 28, 1998Harrison County, Jackson County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Sep 28, 1998, 2:58 AM CDT for Harrison County, Jackson County, Mississippi. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 28, 1998, 2:58 AM CDT (07:58 UTC)
Expired
Sep 28, 1998, 7:00 AM CDT
In force
4 hr
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties Harrison County, MS, Jackson County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 8.0 hours before the alert went out and 84 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, Slidell Radar S, LA at 00:00Z on 1998-09-28Temperature 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 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 1998-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 203 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
1088 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
203 m²/s²
0-3 km storm-relative helicity
240 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 KNEW 280756
FFWNEW
MSC047-059-281200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
258 AM CDT MON SEP 28 1998

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A...

* FLASH FLOOD WARNING FOR
   - HARRISON COUNTY IN SOUTHERN MISSISSIPPI
   - JACKSON COUNTY IN SOUTHERN MISSISSIPPI

* UNTIL 700 AM CDT

* AT 245 AM CDT...THE NORTHERN EYEWALL OF HURRICANE GEORGES WAS
APPROACHING THE COAST FROM THE SOUTH PRODUCING TORRENTIAL DOWNPOURS.
WIDESPREAD RAINFALL TOTALS OF 4 TO 7 INCHES HAVE FALLEN IN THE
SOUTHERN PORTIONS OF HARRISON AND JACKSON COUNTIES SINCE SUNDAY
AFTERNOON AND ADDITIONAL RAINFALL AMOUNTS OF 5 TO 7 INCHES IN THE
NEXT 2 TO 3 HOURS CAN BE EXPECTED. THE VERY HEAVY RAIN COMBINED
WITH TIDAL SURGE WILL ENHANCE FLOODING OVER COASTAL AREAS FROM LONG
BEACH TO PASCAGOULA...ALONG WITH SMALL STREAMS...BAYOUS AND CREEKS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 28, 3:24 AM CDTTornado WarningLIXJackson31 min
Sep 28, 3:35 AM CDTTornado WarningLIXHarrison20 min
Sep 28, 4:34 AM CDTTornado WarningLIXHarrison, Jackson31 min
Sep 28, 6:47 AM CDTTornado WarningLIXHarrison28 min
Sep 28, 7:18 AM CDTFlash Flood WarningLIXHancock, Harrison, Jackson, Pearl River3 hr
Sep 28, 8:38 AM CDTTornado WarningLIXHancock32 min
Sep 28, 8:53 AM CDTTornado WarningLIXHarrison32 min
Sep 28, 10:37 AM CDTFlash Flood WarningLIXHancock, Harrison, Pearl River7 hr
Sep 28, 10:37 AM CDTFlash Flood WarningLIXJackson7 hr

Nearby

Flash Flood Warnings in Mississippi, 1998Every flash flood warning in 1998

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.