Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 83, NWS Mobile, AL

March 30, 1997Greene County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Mar 30, 1997, 2:33 PM CST for Greene County, Mississippi. It was in force for 57 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Mar 30, 1997, 2:33 PM CST (20:33 UTC)
Expired: Mar 30, 1997, 3:30 PM CST
In force: 57 min
Issued by: NWS Mobile, AL
Area: Whole counties

County Greene County, MS

What was reported inside it

Time	Report	Where	Remark
Mar 30, 2:40 PM CST	Hail 0.75	Leakesville, MS

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.6 hours before the alert went out and 148 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1096 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 642 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

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

821 
WUUS1 KMOB 302034 RRA
SVRMOB
MSC041-302130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
233 PM CST SUN MAR 30 1997
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  330 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST MISSISSIPPI
 
   ...GREENE COUNTY
 
AT 230 PM NATIONAL WEATHER SEVICE RADAR INDICATED A SEVERE THUNDERSTORM
IN CENTRAL GREENE COUNTY JUST NORTHWEST OF LEAKESVILLE. THE STORM IS
MOVING TOWARD THE NORTHEAST AT 25 MPH. LARGE HAIL...UP TO AN INCH IN
DIAMETER...IS THE PRIMARY SEVERE THREAT WITH THIS STORM.
 
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.

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 30, 2:12 PM CST	Severe Thunderstorm Warning	MOB	Perry	63 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1997 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.