Alert archive / Alabama / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 135, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Jun 22, 2020, 1:19 PM CDT for Chilton County, Coosa County, Shelby 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
- Jun 22, 2020, 1:19 PM CDT (18:19 UTC)
- Expired
- Jun 22, 2020, 1:42 PM CDT
- In force
- 23 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Chilton County, AL, Coosa County, AL, Shelby County, AL
The radar
The Birmingham radar (KBMX), 27 km from the middle of the area, began a volume at 18:18 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, 6.3 hours before the alert went out and 29 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
- 132 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 1277 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 96 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 Jun 22, 11:06 AM CDT, 2 hours 13 minutes earlier.
Area forecast discussion, Jun 22, 11:06 AM CDT, 2 hours 13 minutes before
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Hazardous Weather Outlook National Weather Service Birmingham AL 831 AM CDT Mon Jun 22 2020 ALZ011>015-017>050-231645- Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Cherokee- Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega- Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa- Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon- Bullock-Lee-Russell-Pike-Barbour- 831 AM CDT Mon Jun 22 2020 This Hazardous Weather Outlook is for the counties served by the National Weather Service office in Birmingham. .DAY ONE...Outlook through Tonight. Isolated severe storms are possible this afternoon and evening across all of Central Alabama. Damaging winds up to 60mph and quarter size hail will be the main threats with any stronger storms. Thunderstorm coverage and intensity should decrease through the evening hours with the loss of daytime heating. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Activation of storm spotters and emergency management are not expected at this time. Please follow all local, state, and CDC guidelines in regards to travel.
In the hours before
Special weather statement, Jun 22, 12:28 PM CDT, 51 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 |
|---|---|---|---|---|
| Jun 21, 7:13 PM CDT | Special Weather Statement | BMX | Greene, Sumter | 47 min |
| Jun 21, 7:57 PM CDT | Special Weather Statement | BMX | Greene | 48 min |
| Jun 22, 12:28 PM CDT | Special Weather Statement | BMX | Lowndes | 32 min |
| Jun 22, 12:49 PM CDT | Special Weather Statement | BMX | Montgomery | 26 min |
| Jun 22, 12:55 PM CDT | Special Weather Statement | BMX | Autauga | 35 min |
| Jun 22, 1:14 PM CDT | Special Weather Statement | BMX | Perry | 46 min |
| Jun 22, 1:32 PM CDT | Special Weather Statement | BMX | Macon | 43 min |
| Jun 22, 1:34 PM CDT | Special Weather Statement | BMX | Pike | 41 min |
| Jun 22, 1:38 PM CDT | Special Weather Statement | BMX | Pickens | 37 min |
| Jun 22, 1:51 PM CDT | Special Weather Statement | BMX | Coosa | 24 min |
| Jun 22, 1:55 PM CDT | Special Weather Statement | BMX | Tuscaloosa | 35 min |
| Jun 22, 2:00 PM CDT | Special Weather Statement | BMX | Shelby | 45 min |
| Jun 22, 2:06 PM CDT | Special Weather Statement | BMX | Macon | 39 min |
| Jun 22, 2:16 PM CDT | Special Weather Statement | BMX | Lamar | 44 min |
| Jun 22, 2:22 PM CDT | Special Weather Statement | BMX | Tuscaloosa | 38 min |
| Jun 22, 2:35 PM CDT | Special Weather Statement | BMX | Chambers, Clay, Randolph, Talladega | 40 min |
| Jun 22, 2:47 PM CDT | Special Weather Statement | BMX | Chambers, Lee | 43 min |
| Jun 22, 2:58 PM CDT | Special Weather Statement | BMX | Jefferson, Walker | 47 min |
| Jun 22, 3:02 PM CDT | Special Weather Statement | BMX | Marion | 43 min |
| Jun 22, 3:21 PM CDT | Special Weather Statement | BMX | Blount, Calhoun, St. Clair | 39 min |
| Jun 22, 3:23 PM CDT | Special Weather Statement | BMX | Cleburne, Randolph | 52 min |
| Jun 22, 3:39 PM CDT | Special Weather Statement | BMX | Winston | 51 min |
| Jun 22, 3:55 PM CDT | Special Weather Statement | BMX | Blount, Etowah | 50 min |
| Jun 22, 4:02 PM CDT | Special Weather Statement | BMX | Calhoun, Cleburne | 28 min |
| Jun 22, 4:25 PM CDT | Special Weather Statement | BMX | Cherokee | 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.