Alert archive / Mississippi / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 83, NWS Mobile, AL

July 7, 1994Harrison County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Jul 7, 1994, 1:59 AM CDT for Harrison County, Mississippi. It was in force for 61 min.

The area

The counties it named.

The facts

Issued
Jul 7, 1994, 1:59 AM CDT (06:59 UTC)
Expired
Jul 7, 1994, 3:00 AM CDT
In force
61 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Harrison County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 7.0 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 00:00Z on 1994-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1329 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 1994-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
1329 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
1138 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
69 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 KMOB 070700
SVRMOB
MSC047-070800-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
159 AM CDT THU JUL 7 1994
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  300 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST MISSISSIPPI
 
   ...EASTERN HARRISON COUNTY
 
 
AT 155 AM...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM OVER EASTERN HARRISON COUNTY 5 MILES EAST OF SAUCIER. THE
THUNDERSTORM WAS MOVING SLOWLY TO THE WEST AND WILL AFFECT THE
SURROUNDING AREAS OF SAUCIER AND WOOLMARKET OVER THE NEXT HOUR.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS 58 MILES AN HOUR AND
GREATER...IN ADDITION TO LARGE HAIL...VERY HEAVY RAINS AND FREQUENT
DEADLY LIGHTNING STRIKES.
 
A FLASH FLOOD WARNING IS ALSO IN EFFECT FOR EASTERN HARRISON COUNTY
AND WESTERN JACKSON COUNTY UNTIL 430 AM.
 
PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREzFERABLY INSIDE A STRONG
BUILDING BUT STAY AWAY FROM WINDOWS.

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 6, 11:44 PM CDT, 2 hours 15 minutes before
FLZ001>010-012-070535-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
1135 PM CDT WED JUL 6 1994

...A FLASH FLOOD WATCH IS IN EFFECT WEDNESDAY NIGHT FOR ESCAMBIA...
SANTA ROSA...OKALOOSA...WALTON...HOLMES...AND WASHINGTON COUNTIES OF
NORTHWEST FLORIDA...
AT 1130 PM CDT...LARGE PATCHES OF RAIN MIXED WITH SCATTERED THUNDER-
STORMS...SOME WITH VERY HEAVY RAIN...WERE OVER THE FLORIDA PANHANDLE...
SOUTH AND SOUTHWEST ALABAMA...SOUTHEAST MISISSIPPI...AND THE ADJOINING
GULF TO 100 MILES OFFSHORE.
SOME OF THE THUNDERSTORMS WITH THE HEAVIER RAINS WERE OVER THE COAST
AND COASTAL WATERS OF SOUTHEAST WALTON COUNTY.
THE THUNDERSTORMS WERE MOVING SLOWLY NORTHEAST.

OTHER STRONG THUNDERSTORMS WERE OVER SOUTHEAST MISSISSIPPI AROUND
THE PASCAGOULA AND BILOXI AREAS...AND OVER THE COASTAL WATERS SOUTH
OF DAUPHIN ISLAND.
Local storm report, Jul 6, 11:58 PM CDT, 2 hours 1 minute before
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
1158 PM CDT WED JULY 6 1994

TIME (CDT)       EVENT
1150 PM          JACKSON COUNTY SHERIFFS OFFICE DEPUTY REPORTED
                 GOLF BALL SIZED HAIL OVER SOUTHERN JACKSON
                 COUNTY BETWEEN INTERSTATE 10 AND VANCLEAVE.
Local storm report, Jul 7, 12:01 AM CDT, 1 hour 58 minutes before
STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE MOBILE AL
1158 PM CDT WED JULY 6 1994

TIME (CDT)       EVENT
1150 PM          JACKSON COUNTY MS SHERIFFS OFFICE DEPUTY REPORTED
                 GOLF BALL SIZED HAIL OVER SOUTHERN JACKSON
                 COUNTY BETWEEN INTERSTATE 10 AND VANCLEAVE.
Special weather statement, Jul 7, 12:37 AM CDT, 1 hour 22 minutes before
FLZ001>010-012-070630-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
1230 AM CDT THU JUL 7 1994

...A FLASH FLOOD WATCH IS IN EFFECT WEDNESDAY NIGHT FOR ESCAMBIA...
SANTA ROSA...OKALOOSA...WALTON...HOLMES...AND WASHINGTON COUNTIES OF
NORTHWEST FLORIDA...

AT 1230 AM CDT...LARGE PATCHES OF RAIN MIXED WITH SCATTERED THUNDER-
STORMS...SOME WITH VERY HEAVY RAIN...WERE OVER THE FLORIDA PANHANDLE...
SOUTH ALABAMA...SOUTHEAST MISISSIPPI...AND THE ADJACENT GULF OF MEXICO.
STRONGEST STORMS WERE JUST NORTHEAST OF BILOXI MISSISSIPPI AND OVER
WATER. HEAVIEST RAIN OVER NORTHWEST FLORIDA WAS OVER SOUTHWEST
WASHINGTON COUNTY.

DUE TO THE EXCESS RAINFALL OVER NORTHWESTL FLORIDA THE PAST SEVERAL DAYS
GROUNDS AND RIVERS ARE UNABLE TO HOLD ANY MORE WATER. ANY ADDITIONAL
SIGNIFICANT RAINFALL WOULD CALL FOR FLASH FLOOD WARNINGS. PERSONS
LIVING IN NORTHWEST FLORIDA SHOULD REMAIN ALERT TO THIS POSSIBILITY.
Special weather statement, Jul 7, 1:28 AM CDT, 31 minutes before
FLZ001>010-012-070730-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
130 AM CDT THU JUL 7 1994

...A FLASH FLOOD WATCH IS IN EFFECT WEDNESDAY NIGHT FOR ESCAMBIA...
SANTA ROSA...OKALOOSA...WALTON...HOLMES...AND WASHINGTON COUNTIES OF
NORTHWEST FLORIDA...

AT 130 AM CDT...PATCHES OF RAIN MIXED WITH A FEW THUNDERSTORMS...SOME
WITH VERY HEAVY RAIN...WERE OVER THE FLORIDA PANHANDLE...SOUTH ALABAMA
...SOUTHEAST MISISSIPPI...AND THE ADJACENT GULF OF MEXICO. STRONGEST
STORMS WERE JUST NORTH OF BILOXI MISSISSIPPI AND OVER SOUTH OF WALTON
COUNTY OF FLORIDA. HEAVIEST RAIN OVER NORTHWEST FLORIDA WAS OVER
SOUTHWEST WASHINGTON COUNTY. COVERAGE IS DECREASING SLOWLY.

DUE TO THE EXCESS RAINFALL OVER NORTHWEST FLORIDA THE PAST SEVERAL DAYS
GROUNDS AND RIVERS ARE UNABLE TO HOLD ANY MORE WATER. ANY ADDITIONAL
SIGNIFICANT RAINFALL WOULD CALL FOR FLASH FLOOD WARNINGS. PERSONS
LIVING IN NORTHWEST FLORIDA SHOULD REMAIN ALERT TO THIS POSSIBILITY.
Local storm report, Jul 7, 1:38 AM CDT, 21 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
138 AM CDT THU JULY 7 1994

TIME (CDT)       EVENT
128 AM           HARRISON COUNTY MISSISSIPPI SHERIFFS OFFICE
                 REPORTED TREES DOWNED...POWER LINES DOWNED IN
                 THE WOOL MARKET AREA OF HARRISON COUNTY.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 11:22 PM CDTSevere Thunderstorm WarningMOBJackson53 min
Jul 7, 12:40 AM CDTSevere Thunderstorm WarningMOBHarrison65 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1994Every severe thunderstorm warning in 1994

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.