Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 110, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at May 21, 1990, 12:29 PM CDT for Tallapoosa County, Alabama. It was in force for 61 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
- May 21, 1990, 12:29 PM CDT (17:29 UTC)
- Expired
- May 21, 1990, 1:30 PM CDT
- In force
- 61 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Tallapoosa 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 |
|---|---|---|---|
| May 21, 12:40 PM CDT | Thunderstorm Wind 0 | Tallapoosa, 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
Centreville/Bibb, AL (KCKL), launched 12:00Z, 5.5 hours before the alert went out and 131 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
- 173 J/kg
- Mixed-layer CIN
- -336 J/kg
- Mixed-layer LCL
- 1194 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMGM 211733 SVRMGM ALC123-211830- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MONTGOMERY AL 1229 PM CDT MON MAY 21 1990 THE NATIONAL WEATHER SERVICE IN MONTGOMERY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 130 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH ALABAMA ...TALLAPOOSA COUNTY A SEVERE THUNDERSTORM WAS INDICATED IN NORTHWEST TALLAPOOSA COUNTY MOVING TOWARD THE EAST AT 30 MPH. LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE WITH THIS STORM. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLEn IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
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
Local storm report, May 21, 9:32 AM CDT, 2 hours 57 minutes before
ATTN SELS STORM REPORT NATIONAL WEATHER SERVICE MOBILE AL 930 AM CDT MON MAY 21 1990 DELAYED STORM REPORT.... GEORGE COUNTY MISSISSIPPI CD REPORTED THAT AT 830 PM CDT SUNDAY MAY 21ST AT THE CENTRAL :COMMUNITY 3 MILES WEST OF LUCEDALE... TREES BLOWN DOWN...STORAGE BUILDING DESTROYED AND FENCE BLOWN DOWN. REPORTED AS POSSIBLE TORNADO BUT LIKELY STRAIGHT LINE WINDS.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 12:11 PM CDT | Severe Thunderstorm Warning | MOB | Coosa | 64 min |
| May 21, 12:42 PM CDT | Severe Thunderstorm Warning | MOB | Dallas, Wilcox | 63 min |
| May 21, 1:47 PM CDT | Severe Thunderstorm Warning | MOB | Montgomery | 43 min |
| May 21, 2:29 PM CDT | Severe Thunderstorm Warning | MOB | Lee | 61 min |
| May 21, 2:39 PM CDT | Severe Thunderstorm Warning | MOB | Clarke, Washington | 51 min |
| May 21, 2:43 PM CDT | Severe Thunderstorm Warning | MOB | Covington | 62 min |
| May 21, 2:52 PM CDT | Severe Thunderstorm Warning | MOB | Coffee | 68 min |
| May 21, 3:06 PM CDT | Severe Thunderstorm Warning | MOB | Pike | 69 min |
| May 21, 3:16 PM CDT | Severe Thunderstorm Warning | MOB | Henry | 59 min |
| May 21, 3:55 PM CDT | Severe Thunderstorm Warning | MOB | Barbour | 65 min |
| May 21, 4:30 PM CDT | Severe Thunderstorm Warning | MOB | Escambia | 30 min |
| May 21, 4:59 PM CDT | Severe Thunderstorm Warning | MOB | Coffee, Covington | 61 min |
| May 21, 5:27 PM CDT | Severe Thunderstorm Warning | MOB | Geneva, Houston | 63 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.