Alert archive / Mississippi / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 8, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Mar 20, 1989, 5:12 PM CST for Forrest County, Perry County, Mississippi. It was in force for 48 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Mar 20, 1989, 5:12 PM CST (23:12 UTC)
- Expired
- Mar 20, 1989, 6:00 PM CST
- In force
- 48 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
Counties Forrest County, MS, Perry County, MS
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 20, 5:30 PM CST | Hail 0.75 | Forrest, MS | |
| Mar 20, 5:40 PM CST | Hail 1 | Perry, MS |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 11.2 hours before the alert went out and 117 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
- 517 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 717 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMOB 202313
SVRMOB
MSC035-111-210000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
512 PM CST MON MAR 20 1989
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 600 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTHEAST MISSISSIPPI
...EASTERN FORREST...NORTHERN PERRY
AT 510 PM MOBILE RADAR INDICATED A SEVERE THUNDERSTORM NEAR CAMP
SHELBY MISSISSIPPI. IT WAS MOVING NORTHEAST AT 35 MPH AND SHOULD
MOVE NEAR MAHNED IN THE NEXT 5 MINUTES AND OVER RICHTON IN THE
NEXT HALF HOUR.
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, Mar 20, 4:35 PM CST, 37 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 435 PM CST MON MAR 20 1989 ...THUNDERSTORMS MOVING THROUGH THE HATTIESBURG AREA... AT 425 PM CST...MOBILE RADAR INDICATED A BAND OF RAIN AND THUNDERSTORMS MOVING SOUTHEAST THROUGH SOUTHERN MISSISSIPPI. THE BAND WAS LOCATED FROM NEAR MERIDIAN TO HATTIESBURG TO POPLARVILLE. THE STRONGEST THUNDER- STORMS WERE BETWEEN MERIDIAN AND HATTIESBURG. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS... HEAVY RAIN...AND POSSIBLY HAIL AS THEY MOVE NORTHEAST AT 35 MPH. CONDITIONS WILL REMAIN FAVORABLE FOR THUNDERSTORMS THE REST OF THIS AFTERNOON AND TONIGHT. SEVERE THUNDERSTORM WATCH NUMBER 41 REMAINS IN EFFECT FOR SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA UNTIL 9 PM.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 5:52 PM CST | Severe Thunderstorm Warning | MOB | Greene | 38 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 1989Every severe thunderstorm warning in 1989
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.