Alert archive / Alabama / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 21, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Mar 21, 1989, 10:48 AM CST for Mobile County, Alabama. It was in force for 42 min. 1 report 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 21, 1989, 10:48 AM CST (16:48 UTC)
- Expired
- Mar 21, 1989, 11:30 AM CST
- In force
- 42 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Mobile County, AL
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 21, 10:54 AM CST | Hail 0.75 | Mobile, AL |
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, 4.8 hours before the alert went out and 152 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
- 1473 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 696 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMOB 211648
SVRMOB
ALC097-211730-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1048 AM CST TUE MAR 21 1989
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1130 AM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTHWEST ALABAMA
...MOBILE
AT 1045 AM CST THE MOBILE RADAR INDICATED A SEVERE THUNDERSTORM OVER
WESTERN MOBILE AND ANOTHER SEVERE THUNDERSTORM JUST NORTH OF THE
MOBILE AIRPORT. LARGE HAIL HAS BEEN REPORTED OVER WESTERN MOBILE.
THE STORM ARE MOVING TO THE NORTHEAST AT 35 MPH.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL..m.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.The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 6:36 PM CST | Severe Thunderstorm Warning | MOB | Dallas | 69 min |
| Mar 20, 7:34 PM CST | Severe Thunderstorm Warning | MOB | Coosa | 56 min |
| Mar 20, 7:34 PM CST | Severe Thunderstorm Warning | MOB | Autauga | 56 min |
| Mar 20, 8:16 PM CST | Severe Thunderstorm Warning | MOB | Montgomery | 59 min |
| Mar 20, 9:18 PM CST | Severe Thunderstorm Warning | MOB | Covington | 57 min |
| Mar 21, 4:20 AM CST | Severe Thunderstorm Warning | MOB | Mobile | 40 min |
| Mar 21, 5:11 AM CST | Severe Thunderstorm Warning | MOB | Elmore | 64 min |
| Mar 21, 6:35 AM CST | Severe Thunderstorm Warning | MOB | Barbour, Pike | 55 min |
| Mar 21, 7:37 AM CST | Severe Thunderstorm Warning | MOB | Barbour | 68 min |
| Mar 21, 8:04 AM CST | Severe Thunderstorm Warning | MOB | Henry, Houston | 56 min |
| Mar 21, 8:24 AM CST | Tornado Warning | MOB | Dale | 42 min |
| Mar 21, 9:15 AM CST | Severe Thunderstorm Warning | MOB | Houston | 50 min |
| Mar 21, 1:45 PM CST | Severe Thunderstorm Warning | MOB | Mobile | 45 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 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.