Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 103, NWS New Orleans, LA

April 22, 1997Pearl River County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 22, 1997, 7:44 PM CDT for Pearl River County, Mississippi. It was in force for 31 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
Apr 22, 1997, 7:44 PM CDT (00:44 UTC)
Expired
Apr 22, 1997, 8:15 PM CDT
In force
31 min
Issued by
NWS New Orleans, LA
Area
Whole counties

County Pearl River County, MS

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 22, 1:30 PM CDTTornado WatchSPC8 hr
Apr 22, 2:30 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 0.7 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 00:00Z on 1997-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2665 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 00:00Z on 1997-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 132 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
2665 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
797 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
132 m²/s²
0-3 km storm-relative helicity
180 m²/s²
Significant tornado parameter
1.6
Supercell composite
7.5

Open this sounding in Storm Lab

The text

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

031 
WUUS1 KNEW 230046 RRA
SVRNEW
MSC109-230115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
744 PM CDT TUE APR 22 1997
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  815 PM CDT
FOR RESIDENTS IN THE FOLLOWING LOCATION...
 
IN SOUTH MISSISSIPPI
 
   ...NORTHERN PEARL RIVER COUNTY
 
AT 7:40 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM JUST WEST OF POPLARVILLE. THIS STORM WAS
MOVING EAST-NORTHEAST AT 35 MILES PER HOUR. THIS STORM WILL
EFFECT THE NORTHERN PORTION OF POPLARVILLE WITHIN THE NEXT
FIVE TO TEN MINUTES.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DONT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

What forecasters said that day

The local office's own words before this severe thunderstorm 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, Apr 22, 6:27 PM CDT, 1 hour 17 minutes before
LAZ034>040-046>050-056>068-MSZ068>071-230130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
625 PM CDT TUE APRIL 22 1997

...SEVERE THUNDERSTORM WATCH NUMBER 182 CANCELLED FOR PART OF SOUTHEAST
LOUISIANA AND SOUTHWEST MISSISSIPPI...

THE FOLLOWING PARISHES IN SOUTHEAST LOUISIANA ARE NO LONGER INCLUDED IN
SEVERE THUNDERSTORM WATCH NUMBER 182...

WEST FELICIANA...EAST FELICIANA...ST. HELENA...POINTEE COUPEE...WEST
BATON ROUGE...EAST BATON ROUGE...AND IBERVILLE.

SEVERE THUNDERSTORM WATCH NUMBER 182 HAS ALSO BEEN CANCELLED FOR THE
FOLLOWING COUNTIES IN SOUTHWEST MISSISSIPPI...

WILKINSON...AMITE...AND PIKE.

THE SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM FOR THE
FOLLOWING PARISHES...

ASCENSION...LIVINGSTON...TANGIPAHOA...WASHINGTON...ST. TAMMANY...
ASSUMPTION..ST. JAMES...ST. JOHN/BAPTIST...LAFOURCHE...ST. CHARLES...
JEFFERSON...ORLEANS...PLAQUEMINES...ST. BERNARD...AND TERREBONNE.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 22, 7:36 PM CDTSevere Thunderstorm WarningLIXJackson39 min
Apr 22, 9:31 PM CDTSevere Thunderstorm WarningLIXJackson44 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1997Every severe thunderstorm warning in 1997

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.