Alert archive / Alabama / Tornado Warnings in 1999
Tornado Warning 70, NWS Birmingham, AL
NWS Birmingham, AL issued this tornado warning at Jul 7, 1999, 5:22 PM CDT for Marengo County, Perry County, Alabama. It was in force for 48 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
- Jul 7, 1999, 5:22 PM CDT (22:22 UTC)
- Expired
- Jul 7, 1999, 6:10 PM CDT
- In force
- 48 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
Counties Marengo County, AL, Perry County, AL
The radar
The Birmingham radar (KBMX), 108 km from the middle of the area, began a volume at 22:24 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 7, 6:00 PM CDT | Thunderstorm Wind 50 | Countywide, AL | Several trees were blown down throughout Marengo County. One tree fell through the roof of a home in Demopolis and caused major damage to the home. |
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.
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 10.4 hours before the alert went out and 108 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
- 1095 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 581 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBHM 072228 RRA TORBHM ALC091-105-072310- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 522 PM CDT WED JUL 7 1999 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED...A * TORNADO WARNING FOR... NORTHERN MARENGO COUNTY... IN WEST CENTRAL ALABAMA... PERRY COUNTY... IN CENTRAL ALABAMA... * UNTIL 610 PM CDT. * AT 521 PM CDT... WEATHER RADAR DETECTED A TORNADO...ABOUT 5 MILES NORTHEAST OF UNION TOWN. THE STORM IS MOVING SOUTHWEST AT 10 TO 15 MPH. IF YOU ARE IN A MULTIPLE STORY BUILDING...GO TO A SMALL INTERIOR ROOM AWAY FROM WINDOWS.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 8:26 PM CDT | Flash Flood Warning | BMX | Colbert, Lauderdale | 2 hr |
| Jul 7, 2:30 PM CDT | Flash Flood Warning | BMX | Jefferson, Shelby | 90 min |
| Jul 7, 2:48 PM CDT | Flash Flood Warning | BMX | Coosa, Tallapoosa | 87 min |
| Jul 7, 3:18 PM CDT | Flash Flood Warning | BMX | Autauga | 92 min |
| Jul 7, 4:46 PM CDT | Severe Thunderstorm Warning | BMX | Cleburne | 44 min |
| Jul 7, 4:54 PM CDT | Flash Flood Warning | BMX | Autauga | 61 min |
| Jul 7, 4:56 PM CDT | Severe Thunderstorm Warning | BMX | Hale, Perry | 49 min |
| Jul 7, 6:00 PM CDT | Severe Thunderstorm Warning | BMX | Marengo, Sumter | 45 min |
| Jul 7, 6:07 PM CDT | Severe Thunderstorm Warning | BMX | Calhoun | 48 min |
| Jul 7, 6:11 PM CDT | Severe Thunderstorm Warning | BMX | Fayette, Walker | 49 min |
| Jul 7, 6:17 PM CDT | Severe Thunderstorm Warning | BMX | DeKalb | 48 min |
| Jul 7, 6:57 PM CDT | Severe Thunderstorm Warning | BMX | Jackson | 48 min |
Nearby
Tornado Warnings in Alabama, 1999Every tornado warning in 1999Tornadoes in 1999
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; radar from the NEXRAD Level II archive.