Alert archive / Alabama / Special Weather Statements in 2021
Special Weather Statement, NWS Birmingham, AL
NWS Birmingham, AL issued this special weather statement at Sep 1, 2021, 3:12 PM CDT for Chilton County, Alabama. It was in force for 48 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
- Sep 1, 2021, 3:12 PM CDT (20:12 UTC)
- Expired
- Sep 1, 2021, 4:00 PM CDT
- In force
- 48 min
- Issued by
- NWS Birmingham, AL
- Hail
- 0.00 in
- Wind
- 50
County Chilton County, AL
The radar
The Birmingham radar (KBMX), 36 km from the middle of the area, began a volume at 20:15 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.
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 8.2 hours before the alert went out and 38 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
- 170 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 990 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
798
WWUS84 KBMX 012012
SPSBMX
Special Weather Statement
National Weather Service Birmingham AL
312 PM CDT Wed Sep 1 2021
ALZ025-027-034>036-012100-
Chilton AL-Bibb AL-Shelby AL-Talladega AL-Coosa AL-
312 PM CDT Wed Sep 1 2021
...Strong thunderstorms will impact portions of southwestern
Talladega, Chilton, southeastern Shelby, southeastern Bibb and
western Coosa Counties through 400 PM CDT...
At 311 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Columbiana to near Jemison to Lawley. Movement
was southeast at 25 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Sylacauga, Calera, Clanton, Columbiana, Jemison, Wilsonville,
Talladega Springs, Stewartville, Weogufka, Thorsby, Maplesville,
Dollar, Gap Of The Mountain, Parnell, Strickland Crossroads, Verbena,
Mitchell Lake, Talladega National Forest, Unity and Lay Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3267 8702 3287 8702 3301 8677 3328 8664
3321 8617 3311 8618 3275 8639 3275 8641
3271 8642 3271 8671 3268 8672
TIME...MOT...LOC 2011Z 309DEG 22KT 3317 8660 3297 8670 3284 8697
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
$$
61The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 8:03 AM CDT | Areal Flood Warning | BMX | Cherokee | 14 hr |
| Sep 1, 1:05 PM CDT | Special Weather Statement | BMX | Lamar | 40 min |
| Sep 1, 1:32 PM CDT | Special Weather Statement | BMX | Tuscaloosa | 43 min |
| Sep 1, 2:08 PM CDT | Special Weather Statement | BMX | Tuscaloosa | 52 min |
| Sep 1, 2:33 PM CDT | Special Weather Statement | BMX | Bibb, Chilton | 42 min |
| Sep 1, 2:47 PM CDT | Special Weather Statement | BMX | Hale | 58 min |
| Sep 1, 3:15 PM CDT | Special Weather Statement | BMX | Greene | 45 min |
| Sep 1, 3:48 PM CDT | Special Weather Statement | BMX | Autauga, Dallas, Perry | 42 min |
| Sep 1, 4:02 PM CDT | Special Weather Statement | BMX | Sumter | 43 min |
| Sep 1, 4:15 PM CDT | Special Weather Statement | BMX | Elmore | 45 min |
| Sep 1, 4:18 PM CDT | Special Weather Statement | BMX | Pickens | 27 min |
| Sep 1, 4:31 PM CDT | Special Weather Statement | BMX | Lowndes, Montgomery | 44 min |
| Sep 1, 4:48 PM CDT | Special Weather Statement | BMX | Marengo, Sumter | 42 min |
| Sep 1, 4:53 PM CDT | Special Weather Statement | BMX | Blount | 52 min |
| Sep 1, 5:00 PM CDT | Special Weather Statement | BMX | Bullock, Macon | 60 min |
| Sep 1, 5:27 PM CDT | Special Weather Statement | BMX | Marengo | 33 min |
| Sep 1, 6:00 PM CDT | Special Weather Statement | BMX | Barbour, Bullock | 60 min |
| Sep 1, 6:20 PM CDT | Special Weather Statement | BMX | Jefferson | 40 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.