Alert archive / Mississippi / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 65, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at May 9, 1991, 1:18 PM CDT for Hancock County, Harrison County, Mississippi. It was in force for 57 min.
The area
The counties it named.
The facts
- Issued
- May 9, 1991, 1:18 PM CDT (18:18 UTC)
- Expired
- May 9, 1991, 2:15 PM CDT
- In force
- 57 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
Counties Hancock County, MS, Harrison County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 6.3 hours before the alert went out and 44 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.
- Mixed-layer CAPE
- 12 J/kg
- Mixed-layer CIN
- -311 J/kg
- Mixed-layer LCL
- 975 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 181 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMOB 091819 SVRMOB MSC045-047-091915- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE MOBILE AL 118 PM CDT THU MAY 9 1991 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 215 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST MISSISSIPPI ...HANCOCK COUNTY...HARRISON COUNTY AT 115 PM CDT MOBILE RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS FROM 5 MILES SOUTH OF PICAYUNE MISSISSIPPI SOUTH ACROSS THE LOUISIANA COASTAL AREA. THE LINE WAS MOVING EAST AT 25 MILES AN HOUR. BOATERS IN THE MISSISSIPPI SOUND WEST OF OCEAN SPRINGS SHOULD SEEK SAFE HARBOR IMMEDIATELY. A FLASH FLOOD WATCH IS IN EFFECT FOR THE WARNED AREA. 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.
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, May 9, 12:26 PM CDT, 52 minutes before
ALZ013-016-MSZ013-014-091830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 1225 PM CDT THU MAY 9 1991 ...FLASH FLOOD WATCH FOR SOUTHEAST MISSISSIPPI TODAY... AT 1220 PM CDT MOBILE RADAR SHOWED AN ALMOST SOLID AREA OF RAIN WITH SCATTERED THUNDERSTORMS OVER THE WEST PART OF SOUTHEAST MISSISSIPPI AND SOUTHWEST INTO LOUISIANA. THUNDERSTORMS WITH HEAVY RAINFALL WERE MORE NUMEROUS IN NORTH HARRISON COUNTY MOVING NORTH AT 20 MILES AN HOUR. THE RAIN AREA WAS GENERALLY WEST OF A LINE FROM BILOXI TO HATTIESBURG SPREADING SLOWLY TO THE EAST. MANY AREAS OF SOUTHEAST MISSISSIPPI ARE STILL SATURATED FROM YESTERDAYS HEAVY RAINFALL AND COULD RECEIVE AN ADDITIONAL 2 TO 3 INCHES TODAY ODR EARLY TONIGHT. MOTORISTS SHOULD DRIVE WITH CAUTION IN AREAS OF HEAVY RAINFALL AND DO NOT DRIVE THROUGH FLOODED AREAS OF UNKNOWN DEPTH. STAY TUNED FOR LATER STATEMENTS OR POSSIBLE WARNINGS.
Nearby
Severe Thunderstorm Warnings in Mississippi, 1991Every severe thunderstorm warning in 1991
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.