Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Birmingham, AL

May 29, 2012Coosa County, Alabama

NWS Birmingham, AL issued this special weather statement at May 29, 2012, 7:28 PM CDT for Coosa 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
May 29, 2012, 7:28 PM CDT (00:28 UTC)
Expired
May 29, 2012, 8:00 PM CDT
In force
32 min
Issued by
NWS Birmingham, AL

County Coosa County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.5 hours before the alert went out and 61 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2012-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 718 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2012-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
718 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1766 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 May 29, 6:46 PM CDT, 42 minutes earlier.

Area forecast discussion, May 29, 6:46 PM CDT, 42 minutes before
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Hazardous weather outlook, May 29, 1:11 PM CDT, 6 hours 17 minutes before
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In the hours before

Special weather statement, May 29, 5:31 PM CDT, 1 hour 57 minutes before
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Special weather statement, May 29, 6:15 PM CDT, 1 hour 13 minutes before
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Special weather statement, May 29, 7:28 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 29, 7:58 PM CDTSpecial Weather StatementBMXCoosa32 min
May 29, 8:29 PM CDTSpecial Weather StatementBMXBlount31 min
May 29, 9:02 PM CDTSpecial Weather StatementBMXBlount28 min
May 29, 9:22 PM CDTSpecial Weather StatementBMXBlount, Calhoun, Cherokee, Etowah, St. Clair38 min
May 29, 9:25 PM CDTSpecial Weather StatementBMXWinston50 min
May 29, 9:35 PM CDTSpecial Weather StatementBMXWalker40 min
May 29, 9:52 PM CDTSpecial Weather StatementBMXTalladega38 min
May 29, 9:59 PM CDTSpecial Weather StatementBMXCalhoun, Cherokee, Cleburne, Etowah, St. Clair46 min
May 29, 10:03 PM CDTSpecial Weather StatementBMXJefferson42 min
May 29, 10:12 PM CDTSpecial Weather StatementBMXWalker48 min
May 29, 10:29 PM CDTSpecial Weather StatementBMXTuscaloosa46 min
May 29, 10:42 PM CDTSpecial Weather StatementBMXCalhoun, Clay, Cleburne, Coosa, Jefferson, Randolph and 2 more48 min
May 29, 11:11 PM CDTSevere Thunderstorm WarningBMXShelby49 min
May 29, 11:33 PM CDTSpecial Weather StatementBMXBibb, Chilton42 min
May 29, 11:58 PM CDTSevere Thunderstorm WarningBMXBibb, Chilton32 min
May 30, 12:06 AM CDTSpecial Weather StatementBMXAutauga, Dallas39 min
May 30, 12:07 AM CDTSpecial Weather StatementBMXChambers53 min
May 30, 12:53 AM CDTSpecial Weather StatementBMXLowndes, Montgomery52 min
May 30, 1:00 AM CDTSpecial Weather StatementBMXRussell45 min
May 30, 5:19 PM CDTSpecial Weather StatementBMXSumter26 min
May 30, 5:26 PM CDTSevere Thunderstorm WarningBMXSumter34 min
May 30, 6:15 PM CDTSpecial Weather StatementBMXMarengo30 min

Nearby

Special Weather Statements in Alabama, 2012Every special weather statement in 2012

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.