Alert archive / Alabama / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 186, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Aug 11, 2020, 12:47 PM CDT for Barbour County, Pike County, Alabama. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 11, 2020, 12:47 PM CDT (17:47 UTC)
- Expired
- Aug 11, 2020, 1:10 PM CDT
- In force
- 23 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Barbour County, AL, Pike County, AL
The radar
The Ft Rucker radar (KEOX), 46 km from the middle of the area, began a volume at 17:48 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.
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 5.8 hours before the alert went out and 182 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
- 953 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 1192 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
NWS Birmingham, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 11, 6:50 AM CDT, 5 hours 57 minutes earlier.
Area forecast discussion, Aug 11, 6:50 AM CDT, 5 hours 57 minutes before
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</html>Hazardous weather outlook, Aug 11, 4:26 AM CDT, 8 hours 21 minutes before
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Special weather statement, Aug 11, 12:08 PM CDT, 39 minutes before
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</html>Special weather statement, Aug 11, 12:27 PM CDT, 20 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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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 |
|---|---|---|---|---|
| Aug 10, 7:17 PM CDT | Special Weather Statement | BMX | Russell | 43 min |
| Aug 10, 7:24 PM CDT | Special Weather Statement | BMX | Pike | 51 min |
| Aug 10, 7:49 PM CDT | Special Weather Statement | BMX | Barbour | 41 min |
| Aug 10, 8:31 PM CDT | Special Weather Statement | BMX | Barbour | 29 min |
| Aug 10, 9:24 PM CDT | Special Weather Statement | BMX | Marshall | 51 min |
| Aug 11, 12:08 PM CDT | Special Weather Statement | BMX | Chilton | 37 min |
| Aug 11, 12:27 PM CDT | Special Weather Statement | BMX | Wilcox | 33 min |
| Aug 11, 1:23 PM CDT | Special Weather Statement | BMX | Tallapoosa | 37 min |
| Aug 11, 1:24 PM CDT | Special Weather Statement | BMX | Elmore | 36 min |
| Aug 11, 1:30 PM CDT | Special Weather Statement | BMX | Lowndes | 30 min |
| Aug 11, 1:37 PM CDT | Severe Thunderstorm Warning | BMX | Lowndes | 22 min |
| Aug 11, 1:56 PM CDT | Special Weather Statement | BMX | Montgomery | 34 min |
| Aug 11, 2:01 PM CDT | Special Weather Statement | BMX | Lowndes | 29 min |
| Aug 11, 2:14 PM CDT | Special Weather Statement | BMX | Lowndes | 31 min |
| Aug 11, 2:21 PM CDT | Special Weather Statement | BMX | Jefferson | 24 min |
| Aug 11, 2:25 PM CDT | Special Weather Statement | BMX | Lee | 35 min |
| Aug 11, 2:36 PM CDT | Severe Thunderstorm Warning | BMX | Elmore, Montgomery | 39 min |
| Aug 11, 2:55 PM CDT | Special Weather Statement | BMX | Autauga | 35 min |
| Aug 11, 3:02 PM CDT | Special Weather Statement | BMX | Pike | 28 min |
| Aug 11, 3:05 PM CDT | Severe Thunderstorm Warning | BMX | Pike | 28 min |
| Aug 11, 3:12 PM CDT | Special Weather Statement | BMX | Macon | 48 min |
| Aug 11, 3:12 PM CDT | Severe Thunderstorm Warning | BMX | Autauga, Dallas | 15 min |
| Aug 11, 3:37 PM CDT | Special Weather Statement | BMX | Pike | 38 min |
| Aug 11, 4:00 PM CDT | Special Weather Statement | BMX | Bullock | 30 min |
| Aug 11, 4:20 PM CDT | Special Weather Statement | BMX | Bullock | 40 min |
| Aug 11, 5:11 PM CDT | Special Weather Statement | BMX | Perry | 34 min |
| Aug 11, 5:32 PM CDT | Special Weather Statement | BMX | Marengo | 43 min |
| Aug 11, 5:37 PM CDT | Special Weather Statement | BMX | Jefferson | 23 min |
| Aug 11, 5:59 PM CDT | Special Weather Statement | BMX | Shelby | 31 min |
| Aug 11, 6:02 PM CDT | Special Weather Statement | BMX | Perry | 43 min |
| Aug 11, 6:06 PM CDT | Special Weather Statement | BMX | Greene | 39 min |
| Aug 11, 6:55 PM CDT | Special Weather Statement | BMX | Tuscaloosa | 35 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2020Every severe thunderstorm warning in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.