Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Birmingham, AL

December 11, 2021Cleburne County, Alabama

NWS Birmingham, AL issued this special weather statement at Dec 11, 2021, 11:03 AM CST for Cleburne County, Alabama. It was in force for 42 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: Dec 11, 2021, 11:03 AM CST (17:03 UTC)
Expired: Dec 11, 2021, 11:45 AM CST
In force: 42 min
Issued by: NWS Birmingham, AL
Hail: 0.00 in
Wind: 40

County Cleburne County, AL

The radar

The Atlanta radar (KFFC), 108 km from the middle of the area, began a volume at 17:02 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, 5.1 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 245 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 703 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 325 m²/s²
0-3 km storm-relative helicity: 371 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.8

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Dec 11, 9:11 AM CST, 1 hour 52 minutes earlier.

Area forecast discussion, Dec 11, 9:11 AM CST, 1 hour 52 minutes before

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Hazardous weather outlook, Dec 11, 2:40 AM CST, 8 hours 23 minutes before

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In the hours before

Special weather statement, Dec 11, 7:05 AM CST, 3 hours 58 minutes before

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Local storm report, Dec 11, 9:14 AM CST, 1 hour 49 minutes before

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Special weather statement, Dec 11, 9:31 AM CST, 1 hour 32 minutes before

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Special weather statement, Dec 11, 10:17 AM CST, 46 minutes before

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Local storm report, Dec 11, 10:22 AM CST, 41 minutes before

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Special weather statement, Dec 11, 11:03 AM CST, 0 minutes before

Special Weather Statement
National Weather Service Birmingham AL
1103 AM CST Sat Dec 11 2021

ALZ019-021-027-111745-
Calhoun AL-Talladega AL-Cleburne AL-
1103 AM CST Sat Dec 11 2021

...Strong thunderstorms will impact portions of northeastern
Talladega, southeastern Calhoun and Cleburne Counties through 1145 AM
CST...

At 1103 AM CST, Doppler radar was tracking strong thunderstorms along
a line extending from near Pleasant Gap to Munford. Movement was east
at 35 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...
Anniston, Oxford, Piedmont, Heflin, Cobb Town, West End-Cobb Town,
Fort McClellan, Saks, Munford, Hobson City, Fruithurst, Edwardsville,
Anniston Regional Airport, Blue Mountain, Grant Town, Muscadine,
Abernathy, Oxford Lake, Bynum and Mars Hills.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3349 8551 3350 8576 3348 8578 3348 8587
      3349 8585 3350 8585 3350 8590 3348 8591
      3348 8613 3395 8553 3394 8550 3396 8549
      3396 8540 3362 8533
TIME...MOT...LOC 1703Z 271DEG 31KT 3397 8543 3354 8598

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

15

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 11, 6:01 AM CST	Special Weather Statement	BMX	Lamar, Marion	59 min
Dec 11, 7:05 AM CST	Special Weather Statement	BMX	Fayette, Lamar, Marion, Walker, Winston	55 min
Dec 11, 9:31 AM CST	Special Weather Statement	BMX	DeKalb	44 min
Dec 11, 10:17 AM CST	Special Weather Statement	BMX	Calhoun, Cherokee	43 min
Dec 11, 11:10 AM CST	Special Weather Statement	BMX	Bullock	35 min
Dec 11, 11:33 AM CST	Special Weather Statement	BMX	Pike	27 min
Dec 11, 1:56 PM CST	Special Weather Statement	BMX	Bullock	49 min
Dec 11, 2:14 PM CST	Special Weather Statement	BMX	Lee, Russell	46 min

Nearby

Special Weather Statements in Alabama, 2021 Every 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.