Alert archive / Alabama / Special Weather Statements in 2021
Special Weather Statement, NWS Birmingham, AL
NWS Birmingham, AL issued this special weather statement at Aug 9, 2021, 1:13 PM CDT for Bibb County, Alabama. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 9, 2021, 1:13 PM CDT (18:13 UTC)
- Expired
- Aug 9, 2021, 1:45 PM CDT
- In force
- 32 min
- Issued by
- NWS Birmingham, AL
- Hail
- 0.00 in
- Wind
- 40
County Bibb County, AL
The radar
The Birmingham radar (KBMX), 26 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, 6.2 hours before the alert went out and 26 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
- 1644 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 893 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
807
WWUS84 KBMX 091813
SPSBMX
Special Weather Statement
National Weather Service Birmingham AL
113 PM CDT Mon Aug 9 2021
ALZ034-091845-
Bibb AL-
113 PM CDT Mon Aug 9 2021
...A strong thunderstorm will impact portions of southeastern Bibb
County through 145 PM CDT...
At 112 PM CDT, Doppler radar was tracking a strong thunderstorm over
Talladega National Forest, or 7 miles southeast of Centreville,
moving east at 15 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Brent, Centreville, Lawley, Talladega National Forest, Ashby,
Brierfield Ironworks Park, West Centreville, Randolph, Trio, Six Mile
and Bibb County Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3307 8692 3306 8691 3306 8690 3305 8690
3305 8688 3285 8688 3284 8711 3296 8716
TIME...MOT...LOC 1812Z 249DEG 13KT 3291 8702
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
$$
56The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 12:21 PM CDT | Special Weather Statement | BMX | Perry | 24 min |
| Aug 9, 12:25 PM CDT | Special Weather Statement | BMX | Clay | 35 min |
| Aug 9, 12:42 PM CDT | Special Weather Statement | BMX | Etowah | 33 min |
| Aug 9, 1:49 PM CDT | Special Weather Statement | BMX | Dallas | 41 min |
| Aug 9, 1:51 PM CDT | Special Weather Statement | BMX | Cherokee | 39 min |
| Aug 9, 2:05 PM CDT | Special Weather Statement | BMX | DeKalb | 40 min |
| Aug 9, 2:28 PM CDT | Special Weather Statement | BMX | Randolph | 32 min |
| Aug 9, 2:30 PM CDT | Special Weather Statement | BMX | Cherokee | 30 min |
| Aug 9, 2:49 PM CDT | Special Weather Statement | BMX | Dallas | 41 min |
| Aug 9, 3:02 PM CDT | Special Weather Statement | BMX | Chambers | 28 min |
| Aug 9, 3:48 PM CDT | Special Weather Statement | BMX | Clay | 27 min |
| Aug 9, 3:49 PM CDT | Special Weather Statement | BMX | Chambers | 26 min |
| Aug 9, 4:00 PM CDT | Special Weather Statement | BMX | Talladega | 30 min |
| Aug 9, 4:21 PM CDT | Special Weather Statement | BMX | Talladega | 24 min |
| Aug 9, 4:44 PM CDT | Severe Thunderstorm Warning | BMX | Talladega | 31 min |
| Aug 9, 5:21 PM CDT | Special Weather Statement | BMX | Calhoun | 39 min |
| Aug 9, 5:56 PM CDT | Special Weather Statement | BMX | Elmore | 34 min |
Nearby
Special Weather Statements in Alabama, 2021Every special weather statement in 2021
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.