Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 31, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Feb 15, 1990, 9:49 PM CST for Pearl River County, Mississippi. It was in force for 26 min.
The area
The counties it named.
The facts
- Issued
- Feb 15, 1990, 9:49 PM CST (03:49 UTC)
- Expired
- Feb 15, 1990, 10:15 PM CST
- In force
- 26 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Pearl River County, MS
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 3.8 hours before the alert went out and 59 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- NaN m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMOB 160348 RRA SVRMOB MSC109-160415- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 949 PM CST THU FEB 15 1990 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1015 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST MISSISSIPPI ...NORTHWESTERN PEARL.RIVER COUNTY AT 946 PM CST BOTH THE MOBILE AND JACKSON RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES WEST OF POPLARVILLE MOVING TOWARD THE NORTHEAST AT 50 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, Feb 15, 5:00 PM CST, 4 hours 49 minutes before
ALZ016-013-015-MSZ013-014-160000 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 500 PM CST THU FEB 15 1990 ...TORNADO WATCH CANCELLED FOR SOUTHWEST ALABAMA...CONTINUES FOR PORTIONS OF SOUTHEAST MISSISSIPPI... THE TORNADO WATCH HAS BEEN CANCELLED FOR PORTIONS OF SOUTHWEST ALABAMA ...BUT SEVERAL SOUTHEAST MISSISSIPPI COUNTIES REMAIN UNDER ANOTHER TORNADO WATCH. THOSE COUNTIES ARE PEARL-RIVER...PERRY AND GREENE. THE MOBILE RADAR AT 455 PM SHOWED ONLY LIGHT TO MODERATE SHOWERS OVER SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA. THEY WERE MOVING RAPIDLY TO THE NORTH NORTHEAST. FURTHER NORTH...VERY STRONG THUNDERSTORMS WERE OCCURRING OVER CENTRAL ALABAMA AND EAST CENTRAL MISSISSIPPI. RESIDENTS IN THOSE MISSISSIPPI COUNTIES IN THE WATCH AREA SHOULD REMAIN ALERT THIS EVENING.
Special weather statement, Feb 15, 5:01 PM CST, 4 hours 48 minutes before
ALZ016-013-015-MSZ013-014-160000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 500 PM CST THU FEB 15 1990 ...TORNADO WATCH CANCELLED FOR SOUTHWEST ALABAMA...CONTINUES FOR PORTIONS OF SOUTHEAST MISSISSIPPI... THE TORNADO WATCH HAS BEEN CANCELLED FOR PORTIONS OF SOUTHWEST ALABAMA ...BUT SEVERAL SOUTHEAST MISSISSIPPI COUNTIES REMAIN UNDER ANOTHER TORNADO WATCH. THOSE COUNTIES ARE PEARL-RIVER...PERRY AND GREENE. THE MOBILE RADAR AT 455 PM SHOWED ONLY LIGHT TO MODERATE SHOWERS OVER SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA. THEY WERE MOVING RAPIDLY TO THE NORTH NORTHEAST. FURTHER NORTH...VERY STRONG THUNDERSTORMS WERE OCCURRING OVER CENTRAL ALABAMA AND EAST CENTRAL MISSISSIPPI. RESIDENTS IN THOSE MISSISSIPPI COUNTIES IN THE WATCH AREA SHOULD REMAIN ALERT THIS EVENING.
Special weather statement, Feb 15, 8:02 PM CST, 1 hour 47 minutes before
MSZ013-014-160330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 800 PM CST THU FEB 15 1990 ...TORNADO WATCH REMAINS IN EFFECT FOR PORTIONS OF SOUTHEAST MISSISSIPPI... A TORNADO WATCH REMAINS IN EFFECT FOR PEARL-RIVER...PERRY AND GREENE COUNTIES OF MISSISSIPPI UNTIL 1000 PM. THE MOBILE RADAR AT 755 PM INDICATED A SCATTERED LINE OF DEVELOPING THUNDERSTORMS FROM NEAR MERIDIAN SOUTHWEST TO JUST WEST OF NEW ORLEANS. THE LINE WAS DRIFTING SLOWLY EAST WHILE THE THUNDERSTORMS WERE MOVING TOWARD THE NORT NORTHEAST AT 40 MPH. THIS LINE OF THUNDERSTORMS IS EXPECTED TO CONTINUE DEVELOPING AND DRIFTING EAST AND WILL AFFECT PORTIONS OF SOUTHEAST MISSISSIPPI BEFORE MIDNIGHT.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 15, 9:56 PM CST | Severe Thunderstorm Warning | MOB | Lamar | 34 min |
| Feb 15, 10:09 PM CST | Tornado Warning | MOB | Forrest, Lamar | 36 min |
| Feb 15, 10:40 PM CST | Severe Thunderstorm Warning | MOB | Perry | 35 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 1990Every severe thunderstorm warning in 1990
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.