Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 113, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at May 21, 1990, 2:29 PM CDT for Lee 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, 2:29 PM CDT (19:29 UTC)
- Expired
- May 21, 1990, 3:30 PM CDT
- In force
- 61 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Lee 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, 2:35 PM CDT | Hail 1.75 | Lee, 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, 7.5 hours before the alert went out and 176 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 211933 SVRMGM ALC081-212030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MONTGOMERY AL 229 PM CDT MON MAY 21 1990 THE NATIONAL WEATHER SERVICE IN MONTGOMERY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 330 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH ALABAMA ...LEE COUNTY PUBLIC REPORTS A SEVERE THUNDERSTORM JUST SOUTHWEST OF AUBURN MOVING EAST NORTHEAST ABOUT 25 MPH. ALSO GOLF BALL SIZE HAIL AND STRONG GUSTY WINDS REPORTED WITH THIS STORM, WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN 4AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
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, 12:29 PM CDT | Severe Thunderstorm Warning | MOB | Tallapoosa | 61 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, 2:39 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.