Alert archive / Mississippi / Flash Flood Warnings in 1998

Flash Flood Warning 23, NWS New Orleans, LA

May 28, 1998Amite County, Mississippi

NWS New Orleans, LA issued this flash flood warning at May 28, 1998, 8:09 PM CDT for Amite County, Mississippi. It was in force for 3 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
May 28, 1998, 8:09 PM CDT (01:09 UTC)
Expired
May 28, 1998, 11:10 PM CDT
In force
3 hr
Issued by
NWS New Orleans, LA
Area
Whole counties

County Amite County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 1.2 hours before the alert went out and 145 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 00:00Z on 1998-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1879 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 00:00Z on 1998-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
1879 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
1609 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 290108
FFWNEW
MSC005-290410-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
809 PM CDT THU MAY 28 1998

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

* FLASH FLOOD WARNING FOR
   - AMITE COUNTY SOUTHERN MISSISSIPPI

* UNTIL 1110 PM CDT

* DOPPLER RADAR IN THE PAST TWO HOURS HAS INDICATED 3 TO
   4 INCHES OF RAINFALL FROM GLOSTER TO LIBERTY AND
   SOUTH TO THE COUNTY/PARISH LINE. THE HEAVIEST RAINFALL
   APPEARS TO BE JUST SOUTH OF GLOSTER ALONG HIGHWAY 33
   BETWEEN GLOSTER AND CENTREVILLE. AMITE COUNTY SHERRIFFS
   OFFICE HAS REPORTED WATER COVERING THE ROADS AND FLOODING
   IN THAT PART OF THE COUNTY.

* AT 807 PM CDT...DOPPLER RADAR CONTINUED TO SHOW STRONG
   THUNDERSTORMS WITH HEAVY RAINFALL THROUGHOUT THE WARNED
   AREA. THE THUNDERSTORMS ARE MOVING SLOWLY NORTH.

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.

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, May 28, 7:40 PM CDT, 29 minutes before
LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-291600-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
740 PM CDT THU MAY 28 1998

SEVERE THUNDERSTORMS WILL CONTINUE ACROSS THE AREAS THIS
THURSDAY EVENING. LOCALLY VERY HEAVY RAIN...GUSTY AND DAMAGING
WINDS...AND DANGEROUS LIGHTNING WILL ACCOMPANY THE STORMS.
THESE STORMS WILL CONTINUE TO MOVE SLOWLY NORTH TO NORTHEAST
DURING THE EVENING HOURS.
Special weather statement, May 28, 7:40 PM CDT, 29 minutes before
LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-291600-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
740 PM CDT THU MAY 28 1998

SEVERE THUNDERSTORMS WILL CONTINUE ACROSS THE AREAS THIS
THURSDAY EVENING. LOCALLY VERY HEAVY RAIN...GUSTY AND DAMAGING
WINDS...AND DANGEROUS LIGHTNING WILL ACCOMPANY THE STORMS.
THESE STORMS WILL CONTINUE TO MOVE SLOWLY NORTH TO NORTHEAST
DURING THE EVENING HOURS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 7:30 PM CDTSevere Thunderstorm WarningLIXWilkinson65 min
May 28, 7:40 PM CDTSevere Thunderstorm WarningLIXAmite50 min
May 28, 7:51 PM CDTSevere Thunderstorm WarningLIXPike44 min
May 28, 8:36 PM CDTFlash Flood WarningLIXPike3 hr
May 29, 1:22 PM CDTSevere Thunderstorm WarningLIXPearl River48 min

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.