Alert archive / Alabama / Special Weather Statements in 2021
Special Weather Statement, NWS Birmingham, AL
NWS Birmingham, AL issued this special weather statement at Aug 12, 2021, 6:21 PM CDT for Montgomery County, Alabama. It was in force for 39 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 12, 2021, 6:21 PM CDT (23:21 UTC)
- Expired
- Aug 12, 2021, 7:00 PM CDT
- In force
- 39 min
- Issued by
- NWS Birmingham, AL
- Hail
- 0.25 in
- Wind
- 40
County Montgomery County, AL
The radar
The Maxwell AFB radar (KMXX), 62 km from the middle of the area, began a volume at 23:23 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, 11.4 hours before the alert went out and 113 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
- 151 J/kg
- Mixed-layer CIN
- -144 J/kg
- Mixed-layer LCL
- 1073 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -39 m²/s²
- 0-3 km storm-relative helicity
- -8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
261
WWUS84 KBMX 122321
SPSBMX
Special Weather Statement
National Weather Service Birmingham AL
621 PM CDT Thu Aug 12 2021
ALZ044-130000-
Montgomery AL-
621 PM CDT Thu Aug 12 2021
...Strong thunderstorms will impact portions of Montgomery County
through 700 PM CDT...
At 620 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Pine Level to near Grady. Movement was
northwest at 10 mph.
HAZARD...Winds in excess of 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Montgomery, Meadville, Pike Road, Pine Level, Hyundai Motors Of
Alabama, Dublin, Woodcrest, Maxwell Air Force Base, Snowdoun, Grady,
Sellers, Davenport, Ramer, Pintlala, Hunter, Alabama State
University, Strata, Naftel, Hope Hull and Dannelly Field.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3197 8630 3205 8631 3205 8641 3224 8641
3229 8649 3233 8647 3234 8649 3236 8649
3238 8646 3241 8646 3240 8644 3241 8641
3226 8599 3225 8600 3197 8600
TIME...MOT...LOC 2320Z 123DEG 9KT 3209 8609 3197 8615
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
$$
61The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 8:27 PM CDT | Special Weather Statement | BMX | Lowndes | 48 min |
| Aug 12, 5:28 PM CDT | Special Weather Statement | BMX | Pike | 47 min |
| Aug 12, 5:50 PM CDT | Special Weather Statement | BMX | Crenshaw | 25 min |
| Aug 12, 6:02 PM CDT | Special Weather Statement | BMX | Barbour, Bullock | 28 min |
| Aug 12, 6:25 PM CDT | Special Weather Statement | BMX | Macon | 35 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.