Alert archive / Alabama / Special Weather Statements in 2015

Special Weather Statement, NWS Birmingham, AL

August 10, 2015Cherokee County, Alabama

NWS Birmingham, AL issued this special weather statement at Aug 10, 2015, 1:55 PM CDT for Cherokee County, Alabama. It was in force for 35 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 10, 2015, 1:55 PM CDT (18:55 UTC)
Expired
Aug 10, 2015, 2:30 PM CDT
In force
35 min
Issued by
NWS Birmingham, AL

County Cherokee County, AL

The radar

The Northeast Alabama radar (KHTX), 81 km from the middle of the area, began a volume at 18:55 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.9 hours before the alert went out and 148 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, Peachtre/Fal Fld, GA at 12:00Z on 2015-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 374 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, Peachtre/Fal Fld, GA at 12:00Z on 2015-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
374 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
1079 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
98 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 Aug 10, 12:55 PM CDT, 1 hour earlier.

Area forecast discussion, Aug 10, 12:55 PM CDT, 1 hour before
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Hazardous weather outlook, Aug 10, 4:58 AM CDT, 8 hours 57 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
458 AM CDT MON AUG 10 2015

ALZ011>015-017>050-111300-
MARION-LAMAR-FAYETTE-WINSTON-WALKER-BLOUNT-ETOWAH-CALHOUN-CHEROKEE-
CLEBURNE-PICKENS-TUSCALOOSA-JEFFERSON-SHELBY-ST. CLAIR-TALLADEGA-
CLAY-RANDOLPH-SUMTER-GREENE-HALE-PERRY-BIBB-CHILTON-COOSA-TALLAPOOSA-
CHAMBERS-MARENGO-DALLAS-AUTAUGA-LOWNDES-ELMORE-MONTGOMERY-MACON-
BULLOCK-LEE-RUSSELL-PIKE-BARBOUR-
458 AM CDT MON AUG 10 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE
NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM.

.DAY ONE...OUTLOOK THROUGH TONIGHT.

THE HEAT AND HUMIDITY WILL LEAD TO MAXIMUM HEAT INDICES OF 105 TO
109 DEGREES THIS AFTERNOON ACROSS MUCH OF CENTRAL ALABAMA...GENERALLY
ALONG AND WEST OF A ONEONTA...TALLADEGA...LINEVILLE...AND
LAFAYETTE LINE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THE HEAT AND HUMIDITY WILL CONTINUE TO LEAD TO HEAT INDICES NEAR
OR ABOVE 105 DEGREES ON TUESDAY ACROSS PORTIONS OF SOUTH AND WEST
CENTRAL ALABAMA.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT IS NOT
EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Aug 10, 12:34 PM CDT, 1 hour 21 minutes before
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Special weather statement, Aug 10, 1:38 PM CDT, 17 minutes before
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Special weather statement, Aug 10, 1:55 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
Aug 10, 12:34 PM CDTSpecial Weather StatementBMXTuscaloosa41 min
Aug 10, 1:38 PM CDTSpecial Weather StatementBMXTuscaloosa52 min
Aug 10, 2:02 PM CDTSpecial Weather StatementBMXEtowah43 min
Aug 10, 3:54 PM CDTSpecial Weather StatementBMXMarshall36 min
Aug 10, 4:10 PM CDTSpecial Weather StatementBMXDeKalb50 min
Aug 10, 4:34 PM CDTSpecial Weather StatementBMXEtowah56 min
Aug 10, 4:46 PM CDTAreal Flood AdvisoryBMXBlount3 hr
Aug 10, 5:29 PM CDTSpecial Weather StatementBMXCalhoun, Cherokee61 min
Aug 10, 5:37 PM CDTSpecial Weather StatementBMXBlount53 min
Aug 10, 5:49 PM CDTSpecial Weather StatementBMXJefferson56 min
Aug 10, 6:15 PM CDTSpecial Weather StatementBMXWinston30 min
Aug 10, 6:18 PM CDTSpecial Weather StatementBMXCleburne57 min
Aug 10, 6:25 PM CDTSpecial Weather StatementBMXRandolph65 min
Aug 10, 6:30 PM CDTSevere Thunderstorm WarningBMXClay, Cleburne, Randolph60 min
Aug 10, 6:36 PM CDTSpecial Weather StatementBMXWinston39 min
Aug 10, 6:39 PM CDTSpecial Weather StatementBMXJefferson66 min

Nearby

Special Weather Statements in Alabama, 2015Every special weather statement in 2015

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.