Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 243, NWS New Orleans, LA

July 23, 1997Harrison County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Jul 23, 1997, 3:13 PM CDT for Harrison County, Mississippi. It was in force for 62 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
Jul 23, 1997, 3:13 PM CDT (20:13 UTC)
Expired
Jul 23, 1997, 4:15 PM CDT
In force
62 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 20:12 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.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.2 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-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 1997-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2879 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 1997-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -37 square meters per square second.1939Sfc1 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
2879 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
668 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-37 m²/s²
0-3 km storm-relative helicity
-13 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.

000 
TTAA00 KNEW 232013 RRA
SVRNEW
MSC047-232115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
313 PM CDT WED JUL 23 1997
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  415 PM CDT
FOR RESIDENTS IN THE FOLLOWING LOCATION...
 
IN SOUTH MISSISSIPPI
 
   ...HARRISON COUNTY
 
AND THE ADJACENT COASTAL WATERS
 
 
AT 310 PM CDT RADAR SHOWED A THUNDERSTORM WITH VERY HEAVY RAIN AND
POSSIBLE HAIL OVER THE NORTHWEST PART OF HARRISON COUNTY ABOUT 5 MILES
WEST OF SAUCIER. THIS THUNDERSTORM IS DRIFTING TOWARDS THE SOUTH ABOUT 5
MPH.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

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, Jul 23, 11:55 AM CDT, 3 hours 18 minutes before
LAZ034>040-046>049-056>070-MSZ068>071-080>082-230300

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA
1155 AM CDT TUE JUL 23 1997

A MOIST UNSTABLE ATMOSPHERE PERSISTS OVER SOUTHEAST LOUISIANA...
SOUTHWEST AND COASTAL MISSISSIPPI. SCATTERED THUNDERSTORMS WILL
DEVELOP ACROSS THE AREA THIS AFTERNOON AS TEMPERATURES CLIMB INTO
THE UPPER 80S/LOWER 90S. THE HIGH MOISTURE CONTENT OF THE AIRMASS
OVER THE REGION WILL LIKLEY RESULT IN LOCALLY HEAVY RAINFALL WITH
A MODERATE RISK OF STRONG GUSTY WINDS...GENERAL THUNDERSTORMS ARE
EXPECTED OVER THE AREA DURING THE AFTERNOON BUT WITH LITTLE OR NO
RISK OF SEVERE THUNDERSTORMS. SHOWER AND THUNDERSTORM ACTIVITY
WILL GRADUALLY DIMINISH THIS EVENING.

FOR THE LATEST WEATHER INFORMATION PLEASE LISTEN TO TELEVISION..
RADIO..OR NOAA WEATHER RADIO OR VISIT THE NEW ORLEANS/BATON ROUGE
AREA FORECAST OFFICE HOMEPAGE ON THE INTERNET.
Special weather statement, Jul 23, 11:57 AM CDT, 3 hours 16 minutes before
LAZ034>040-046>049-056>070-MSZ068>071-080>082-230300

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA
1155 AM CDT TUE JUL 23 1997

A MOIST UNSTABLE ATMOSPHERE PERSISTS OVER SOUTHEAST LOUISIANA...
SOUTHWEST AND COASTAL MISSISSIPPI. SCATTERED THUNDERSTORMS WILL
DEVELOP ACROSS THE AREA THIS AFTERNOON AS TEMPERATURES CLIMB INTO
THE UPPER 80S/LOWER 90S. THE HIGH MOISTURE CONTENT OF THE AIRMASS
OVER THE REGION WILL LIKLEY RESULT IN LOCALLY HEAVY RAINFALL WITH
A MODERATE RISK OF STRONG GUSTY WINDS...GENERAL THUNDERSTORMS ARE
EXPECTED OVER THE AREA DURING THE AFTERNOON BUT WITH LITTLE OR NO
RISK OF SEVERE THUNDERSTORMS. SHOWER AND THUNDERSTORM ACTIVITY
WILL GRADUALLY DIMINISH THIS EVENING.

FOR THE LATEST WEATHER INFORMATION PLEASE LISTEN TO TELEVISION..
RADIO..OR NOAA WEATHER RADIO OR VISIT THE NEW ORLEANS/BATON ROUGE
AREA FORECAST OFFICE HOMEPAGE ON THE INTERNET.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 1:55 PM CDTSevere Thunderstorm WarningLIXHancock65 min
Jul 23, 4:12 PM CDTFlash Flood WarningLIXPearl River2 hr

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; radar from the NEXRAD Level II archive.