Alert archive / Mississippi / Tornado Warnings in 1998

Tornado Warning 25, NWS New Orleans, LA

September 20, 1998Pearl River County, Mississippi

NWS New Orleans, LA issued this tornado warning at Sep 20, 1998, 9:05 AM CDT for Pearl River County, Mississippi. It was in force for 45 min. 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 20, 1998, 9:05 AM CDT (14:05 UTC)
Expired
Sep 20, 1998, 9:50 AM CDT
In force
45 min
Issued by
NWS New Orleans, LA
Area
Whole counties

County Pearl River County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 2.1 hours before the alert went out and 59 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 1998-09-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 92 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, Slidell Radar S, LA at 12:00Z on 1998-09-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
92 J/kg
Mixed-layer CIN
-123 J/kg
Mixed-layer LCL
782 m above ground
0-6 km bulk shear
1 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
96 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.

307 
WFUS1 KNEW 201404 RRA
TORNEW
MSC109-201450-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
905 AM CDT SUN SEP 20 1998

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

* TORNADO WARNING FOR
   - PEARL RIVER COUNTY IN SOUTHERN MISSISSIPPI

* UNTIL 950 AM CDT

* AT 900AM PEARL RIVER COUNTY SHERIFFS OFFICE REPORTED A TORNADO
TOUCHED DOWN NEAR POPLARVILLE. SEVERAL MOBILE HOMES WERE DAMAGED.
THE SEVERE THUNDERSTORM AND ASSOCIATED TORNADO WAS MOVING NORTHEAST
AROUND 15 MPH.

* THE COMMUNITY OF HILLSDALE IS IN THE PATH OF THIS TORNADO.


IF YOU ARE IN THESE AREAS...SEEK SHELTER IN A SMALL INTERIOR ROOM
AWAY FROM WINDOWS

IF YOU ARE IN THE PATH OF A TORNADO...GET UNDER A WORKBENCH OR PIECE
OF STURDY FURNITURE. SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A
CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...OR CUSHIONS TO
COVER YOUR BODY.  AVOID WINDOWS.

&

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 20, 9:54 AM CDTTornado WarningLIXHancock, Harrison46 min
Sep 20, 10:23 AM CDTSevere Thunderstorm WarningLIXWalthall62 min
Sep 20, 10:30 AM CDTFlash Flood WarningLIXWalthall2 hr
Sep 20, 11:46 AM CDTTornado WarningLIXPearl River49 min

Nearby

Tornado Warnings in Mississippi, 1998Every tornado warning in 1998Tornadoes 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.