Alert archive / Mississippi / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 4, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Mar 1, 1991, 11:27 AM CST for George County, Jackson County, Mississippi. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- Mar 1, 1991, 11:27 AM CST (17:27 UTC)
- Expired
- Mar 1, 1991, 12:30 PM CST
- In force
- 63 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
Counties George County, MS, Jackson County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 5.5 hours before the alert went out and 112 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
- 60 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 582 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 348 m²/s²
- 0-3 km storm-relative helicity
- 409 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMOB 011729 SVRMOB MSC039-059-011830- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE MOBILE AL 1127 AM CST FRI MAR 1 1991 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 1230 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST MISSISSIPPI ...GEORGE COUNTY...JACKSON COUNTY...AND THE ADJACENT COASTAL WATERS AT 1130 AM RADAR INDICATED A LINE OF SEVERE THUNDERSTOMS FROM NEAR LUCEDALE MISSISSIPPI TO OCEAN SPRINGS THEN OFF SHORE INTO THE COASTAL WATERS 30 MILES. THE LINE WAS MOVING TO THE EAST AT 40 MPH. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
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, Mar 1, 9:16 AM CST, 2 hours 11 minutes before
ALZ013-015-016-MSZ014-013-011715- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 915 AM CST FRI MAR 1 1991 ...TORNADO WATCH NUMBER 16 IS IN EFFECT FOR ALL COUNTIES IN SOUTHEAST MISSISSIPPI UNTIL NOON TODAY... AT 900 AM THIS MORNING NATIONAL WEATHER SERVICE RADARS SHOWED A LARGE AREA OF RAIN WITH IMBEDED THUNDERSTORMS COVERING MOST OF SOUTHEAST MISSISSIPPI AND PARTS OF SOUTHWEST ALABAMA AND THE ADJACENT COASTAL WATERS. THE STRONGEST STORMS WERE LOCATED OVER MOBILE COUNTY ALABAMA AND GREENE COUNTY MISSISSIPPI. THE RAIN AND THE THUNDERSTORMS WERE MOVING TO THE NORTH AT 45 MPH. A TORNADO WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF TORNADOES IN AND NEAR THE WATCH AREA. RESIDENCE ALONG THE ALABAMA MISSISSIPPI GULF COAST SHOULD REMAIN ALERT AND BE READY TO TAKE SHELTER IF SEVERE WEATHER IS SPOTED OR A WARNING IS ISSUED.
Special weather statement, Mar 1, 9:40 AM CST, 1 hour 47 minutes before
FLZ001>004-011635- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 935 AM CST FRI MAR 1 1991 AT 930 AM CST WEATHER SERVICE RADAR SHOWED A LARGE AREA OF RAIN WITH SCATTERED EMBEDDED THUNDERSTORMS COVERING SOUTHWEST ALABAMA AND SOUTH MISSISSIPPI. THUNDERSTORMS WILL BE MOVING INTO NORTHWEST FLORIDA IN ESCAMBIA COUNTY DURING THE NEXT HOUR. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING HAIL...STRONG GUSTY WINDS...DANGEROUS LIGHTNING STRIKES AND BRIEF PERIODS OF HEAVY RAIN AS THEY MOVE NORTHEAST AT 30 MILES AN HOUR. THE HEAVIEST STORMS WERE NORTHEAST OF THE UPPER PARTS OF MOBILE BAY. THE RAIN AREA WAS MOVING EAST AT 10 TO 15 MILES AN HOUR.
Special weather statement, Mar 1, 10:42 AM CST, 45 minutes before
FLZ001>004-011740- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 1040 AM CST FRI MAR 1 1991 ...A TORNADO WATCH IS IN EFFECT FOR THE FOLLOWING COUNTIES IN NORTHWEST FLORIDA UNTIL 300 PM CST ESCAMBIA...SANTA ROSA...OKALOOSA.. AT 1030 AM CST WEATHER SERVICE RADAR SHOWED A LARGE AREA OF RAIN WITH SCATTERED EMBEDDED THUNDERSTORMS COVERING SOUTHWEST ALABAMA SOUTH MISSISSIPPI AND NORTHWEST FLORIDA. THE HEAVIEST STORMS WERE MOVING THROUGH NORTHWEST FLORIDA AND SOUTHWEST ALABAMA FROM JUST NORTH OF PENSACOLA TO BREWTON TO NEAR MONROEVILLE. LARGE HAIL...DAMAGING WINDS...DANGEROUS LIGHTNING STRIKES AND BRIEF PERIODS OF HEAVY RAIN CAN BE EXPECTED FROM THESE STORMS AS THEY MOVE NORTHEAST AT 30 MILES AN HOUR. THESE STORMS WILL CONTINUE MOVING ACROSS NORTHWEST FLORIDA FOR THE NEXT FEW HOURS AND WILL BE MOVING THROUGH CRESTVIEW BETWEEN 1100 AM AND NOON. ANOTHER HEAVY THUNDERSTORM WA/S IN SOUTHEAST MISSISSIPPI 15 MILES NORTH OF GULFPORT. THE RAIN AREA WAS MOVING EAST AT 10 TO 15 MILES AN HOUR.
Special weather statement, Mar 1, 11:07 AM CST, 20 minutes before
ALZ013-015-016-MSZ013-014-011900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 1105 AM CST FRI MAR 1 1991 ...SPECIAL MARINE WARNING IN EFFECT FOR THE MISSISSIPPI COASTAL WATER FROM THE MOUTH OF THE MISSISSIPPI RIVER TO OCEAN SPRINGS UNTIL NOON... ...TORNADO WATCH NUMBER 17 REMAINS IN EFFECT FOR ALL COUNTIES IN SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA AND THE ADJACENT COASTAL WATERS... AT 1100 AM NATIONAL WEATHER SERVICE RADARS SHOWED A LARGE AREA OF RAIN WITH IMBEDED THUNDERSTORMS COVERING MOST OF SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA AND THE ADJACENT COASTAL WATERS. THE STRONGEST STORMS WERE LOCATED IN A 50 MILE WIDE BAND FROM NEAR LEAKSVILLE MISSISSIPPI TO NEW ORLEANS LOUISIANNA. THE STORMS ARE MOVING TO THE NORTH AT 45 MPH. THESE STORMS HAVE PRODUCED WIND GUST IN EXCESS OF GALE FORCE OVER THE LOUISIANNA COASTAL WATERS AND GUST TO 40 TO 45 MPH ALONG THE MISSISSIPPI ALABAMA COAST. HEAVY RAIN.z..DANGEROUS LIGHTINING ALSO ACCOMPANY THESE STORMS. RESIDENCE SHOUD REMAIN ALERT AND BE READY TAKE SHELTER IF THREATENING WEATHER IS SPOTTED OR A WARNING IS ISSUED.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 1, 6:35 AM CST | Severe Thunderstorm Warning | MOB | Harrison | 25 min |
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.