Alert archive / Mississippi / Flash Flood Warnings in 1998

Flash Flood Warning 48, NWS New Orleans, LA

September 28, 1998Jackson County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Sep 28, 1998, 10:37 AM CDT for Jackson County, Mississippi. It was in force for 7 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, 10:37 AM CDT (15:37 UTC)
Expired
Sep 28, 1998, 5:15 PM CDT
In force
7 hr
Issued by
NWS New Orleans, LA
Area
Whole counties

County Jackson County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.6 hours before the alert went out and 106 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 12:00Z 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 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 12:00Z on 1998-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 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
884 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
42 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 281535 COR
FFWNEW
MSC045-047-059-109-282215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING...CORRECTED
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1037 AM CDT MON SEP 28 1998

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

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

* UNTIL 515 PM CDT

* BANDS OF HEAVY RAIN HAVE PUSHED SLOWLY WESTWARD INTO PEARL RIVER
  AND HANCOCK COUNTIES. HANCOCK COUNTY CIVIL DEFENSE REPORTS
  RECEIVING 2 INCHES OF RAINFALL THIS MORNING. RAINFALL AMOUNTS
  WILL CONTINUE TO INCREASE TODAY AND ESPECIALLY TONIGHT AS THE CORE
  OF HURRICANE GEORGES MOVES TROUGH HANCOCK AND PEARL RIVER
  COUNTIES. AN ADDITIONAL 2 INCHES MAY BE EXPECTED TODAY WITH
  POSSIBLY 5 TO 10 INCHES FALLING TONIGHT. AS THE STORM CONTINUES
  MOVING THE RAINFALL IN JACKSON AND HARRISON COUNTIES WILL BEGIN
  TO RELENT.

  RESIDENTS SHOULD EXPECT STREET FLOODING BY THIS EVENING
  WITH RAINFALL STARTING TO FLOOD LOW LYING AREAS LATER THIS
  EVENING.

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, Sep 28, 10:05 AM CDT, 32 minutes before
LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-291530-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1005 AM CDT MON SEP 28 1998

HURRICANE GEORGES...NEAR GULFPORT MISSISSIPPI...IS EXPECTED TO
DRIFT WEST TOWARDS PASS CHRISTIAN BY TONIGHT BEFORE DRIFTING NORTH
TO CENTRAL MISSISSIPPI LATE TUESDAY. NUMEROUS SHOWERS AND THUNDER-
STORMS CAN BE EXPECTED OVER SOUTH MISSISSIPPI...A FEW POSSIBLY
SEVERE WITH HEAVY RAINFALL. ISOLATED TORNADO*ES ARE LIKELY NEAR
AND TO THE EAST OF THE CENTER OF THE HURRICANE.
Special weather statement, Sep 28, 10:05 AM CDT, 32 minutes before
LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-291530-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1005 AM CDT MON SEP 28 1998

HURRICANE GEORGES...NEAR GULFPORT MISSISSIPPI...IS EXPECTED TO
DRIFT WEST TOWARDS PASS CHRISTIAN BY TONIGHT BEFORE DRIFTING NORTH
TO CENTRAL MISSISSIPPI LATE TUESDAY. NUMEROUS SHOWERS AND THUNDER-
STORMS CAN BE EXPECTED OVER SOUTH MISSISSIPPI...A FEW POSSIBLY
SEVERE WITH HEAVY RAINFALL. ISOLATED TORNADO*ES ARE LIKELY NEAR
AND TO THE EAST OF THE CENTER OF THE HURRICANE.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 28, 2:58 AM CDTFlash Flood WarningLIXHarrison, Jackson4 hr
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

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.