Alert archive / Alabama / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 19, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Jan 18, 1999, 1:12 AM CST for Winston County, Alabama. It was in force for 33 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
- Jan 18, 1999, 1:12 AM CST (07:12 UTC)
- Expired
- Jan 18, 1999, 1:45 AM CST
- In force
- 33 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Winston County, AL
The radar
The Columbus AFB radar (KGWX), 92 km from the middle of the area, began a volume at 07:13 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 |
|---|---|---|---|
| Jan 18, 1:18 AM CST | Hail 0.75 | Arley, AL | Dime size hail was reported near Arley. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 17, 9:45 PM CST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 7.2 hours before the alert went out and 231 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
- 687 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 598 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 352 m²/s²
- 0-3 km storm-relative helicity
- 343 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 7.9
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Jan 18, 12:06 AM CST, 1 hour 6 minutes before
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</html>The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 17, 7:57 PM CST | Severe Thunderstorm Warning | BMX | Lauderdale | 63 min |
| Jan 17, 8:57 PM CST | Severe Thunderstorm Warning | BMX | Lauderdale | 63 min |
| Jan 17, 11:12 PM CST | Severe Thunderstorm Warning | BMX | Franklin | 48 min |
| Jan 17, 11:16 PM CST | Severe Thunderstorm Warning | BMX | Lawrence | 64 min |
| Jan 17, 11:27 PM CST | Severe Thunderstorm Warning | BMX | Lamar | 48 min |
| Jan 17, 11:29 PM CST | Severe Thunderstorm Warning | BMX | Limestone | 46 min |
| Jan 17, 11:47 PM CST | Severe Thunderstorm Warning | BMX | Marion | 48 min |
| Jan 17, 11:58 PM CST | Severe Thunderstorm Warning | BMX | Madison | 32 min |
| Jan 18, 12:07 AM CST | Severe Thunderstorm Warning | BMX | Jackson | 48 min |
| Jan 18, 12:45 AM CST | Severe Thunderstorm Warning | BMX | Cullman | 50 min |
| Jan 18, 12:56 AM CST | Severe Thunderstorm Warning | BMX | Marshall, Morgan | 49 min |
| Jan 18, 1:33 AM CST | Severe Thunderstorm Warning | BMX | Pickens | 32 min |
| Jan 18, 1:38 AM CST | Severe Thunderstorm Warning | BMX | DeKalb | 47 min |
| Jan 18, 1:40 AM CST | Severe Thunderstorm Warning | BMX | Cullman | 50 min |
| Jan 18, 1:44 AM CST | Severe Thunderstorm Warning | BMX | Walker | 46 min |
| Jan 18, 1:50 AM CST | Severe Thunderstorm Warning | BMX | Tuscaloosa | 45 min |
| Jan 18, 2:00 AM CST | Severe Thunderstorm Warning | BMX | Blount | 45 min |
| Jan 18, 2:18 AM CST | Severe Thunderstorm Warning | BMX | Jefferson | 47 min |
| Jan 18, 2:29 AM CST | Severe Thunderstorm Warning | BMX | Etowah | 46 min |
| Jan 18, 2:34 AM CST | Severe Thunderstorm Warning | BMX | Tuscaloosa | 21 min |
| Jan 18, 2:38 AM CST | Severe Thunderstorm Warning | BMX | Marshall | 47 min |
| Jan 18, 3:26 AM CST | Severe Thunderstorm Warning | BMX | Cherokee | 49 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.