Alert archive / Alabama / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 445, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Jul 29, 1999, 6:15 PM CDT for Etowah County, Marshall County, Alabama. It was in force for 50 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 29, 1999, 6:15 PM CDT (23:15 UTC)
- Expired
- Jul 29, 1999, 7:05 PM CDT
- In force
- 50 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
Counties Etowah County, AL, Marshall County, AL
The radar
The Northeast Alabama radar (KHTX), 81 km from the middle of the area, began a volume at 23:15 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 29, 6:25 PM CDT | Thunderstorm Wind 55 | Countywide, AL | Numerous trees and power lines were blown down across the county. The hardest hit areas included Gadsden, Attalla, Hokes Bluff, Rainbow City and Glencoe. The Etowah County EOC measured a wind gust of 62 miles an hour at 1735. Several homes received damage f |
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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.3 hours before the alert went out and 180 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
- 192 J/kg
- Mixed-layer CIN
- -93 J/kg
- Mixed-layer LCL
- 1285 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 4:17 PM CDT | Severe Thunderstorm Warning | BMX | Lowndes, Montgomery | 33 min |
| Jul 29, 4:27 PM CDT | Severe Thunderstorm Warning | BMX | Jackson | 48 min |
| Jul 29, 4:57 PM CDT | Severe Thunderstorm Warning | BMX | DeKalb | 33 min |
| Jul 29, 5:20 PM CDT | Severe Thunderstorm Warning | BMX | Calhoun, Cleburne | 35 min |
| Jul 29, 5:28 PM CDT | Severe Thunderstorm Warning | BMX | Madison | 32 min |
| Jul 29, 5:55 PM CDT | Severe Thunderstorm Warning | BMX | Calhoun | 50 min |
| Jul 29, 5:58 PM CDT | Severe Thunderstorm Warning | BMX | Madison | 47 min |
| Jul 29, 6:15 PM CDT | Severe Thunderstorm Warning | BMX | Morgan | 50 min |
| Jul 29, 6:38 PM CDT | Severe Thunderstorm Warning | BMX | Colbert, Franklin | 47 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 1999Every severe thunderstorm warning 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.