Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 99, NWS New Orleans, LA

April 22, 1997Amite County, Pike County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 22, 1997, 5:12 PM CDT for Amite County, Pike County, Mississippi. It was in force for 48 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: Apr 22, 1997, 5:12 PM CDT (22:12 UTC)
Expired: Apr 22, 1997, 6:00 PM CDT
In force: 48 min
Issued by: NWS New Orleans, LA
Area: Whole counties

Counties Amite County, MS, Pike County, MS

What was reported inside it

Time	Report	Where	Remark
Apr 22, 5:15 PM CDT	Thunderstorm Wind 50	Progress, 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 22, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.2 hours before the alert went out and 134 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: 1720 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 521 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 158 m²/s²
0-3 km storm-relative helicity: 261 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 222213 RRA
SVRNEW
MSC005-113-222300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
512 PM CDT TUE APR 22 1997
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  600 PM CDT
FOR RESIDENTS IN THE FOLLOWING LOCATIONS...
 
IN SOUTH MISSISSIPPI
 
   ...AMITE COUNTY...PIKE COUNTY
 
AT 450 PM A CLUSTER OF SEVERE THUNDERSTORMS WAS LOCATED OVER NORTH AMITE
AND NORTH PIKE COUNTIES FROM NEAR BROOKSIDE TO SUMMIT. THE STORMS WERE
MOVING EAST AROUND 35 MILES AN HOUR. COMMUNITIES IN THE PATH OF THESE
THUNDERSTORMS INLCUDE MCCOMB...PRICEDALE..MCELVEEN.
 
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
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE RO$AD.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 22, 5:23 PM CDT	Severe Thunderstorm Warning	LIX	Walthall	37 min
Apr 22, 6:33 PM CDT	Severe Thunderstorm Warning	LIX	Pearl River	57 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.