Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 142, NWS New Orleans, LA

May 3, 1997Harrison County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at May 3, 1997, 5:14 AM CDT for Harrison County, Mississippi. It was in force for 61 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: May 3, 1997, 5:14 AM CDT (10:14 UTC)
Expired: May 3, 1997, 6:15 AM CDT
In force: 61 min
Issued by: NWS New Orleans, LA
Area: Whole counties

County Harrison County, MS

The radar

The Mobile radar (KMOB), 86 km from the middle of the area, began a volume at 10:17 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
May 3, 5:30 AM CDT	Hail 1.75	Saucier, 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
May 3, 2:00 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 10.2 hours before the alert went out and 62 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: 2040 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 786 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 5.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 031014 RRA
SVRNEW
MSC047-031115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
514 AM CDT SAT MAY 3 1997
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  615 AM CDT
FOR RESIDENTS IN THE FOLLOWING LOCATION...
 
IN SOUTH MISSISSIPPI
 
   ...HARRISON COUNTY
 
AT 510 AM NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM
LOCATED IN NORTHERN HANCOCK COUNTY MOVING EAST AT 35 MPH. THIS STORM
WILL MOVE INTO HARRISON COUNTY SHORTLY AND THREATEN THE COMMUNITIES OF
LIZANA AND SAUCIER IN THE NEXT 30 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
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 4:14 AM CDT	Severe Thunderstorm Warning	LIX	Pearl River	46 min
May 3, 4:50 AM CDT	Severe Thunderstorm Warning	LIX	Hancock	40 min
May 3, 5:43 AM CDT	Severe Thunderstorm Warning	LIX	Hancock	17 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; radar from the NEXRAD Level II archive.