Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Birmingham, AL

July 9, 2012Randolph County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 9, 2012, 7:22 PM CDT for Randolph County, Alabama. It was in force for 23 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
Jul 9, 2012, 7:22 PM CDT (00:22 UTC)
Expired
Jul 9, 2012, 7:45 PM CDT
In force
23 min
Issued by
NWS Birmingham, AL

County Randolph County, AL

The radar

The Atlanta radar (KFFC), 89 km from the middle of the area, began a volume at 00:23 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.4 hours before the alert went out and 95 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 00:00Z on 2012-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 745 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 00:00Z on 2012-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
745 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
1864 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
15 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 Jul 9, 6:39 PM CDT, 43 minutes earlier.

Area forecast discussion, Jul 9, 6:39 PM CDT, 43 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
639 PM CDT MON JUL 9 2012

.UPDATE...

FOR 00Z AVIATION.

&&

.DISCUSSION...

BUMPED POPS UP DUE TO SEABREEZE BOUNDARY APPROACHING FROM THE
SOUTHWEST. THINK THIS ACTIVITY WILL HOLD TOGETHER LONG ENOUGH FOR
LIKELY POPS A FEW HOURS THIS EVENING ESPECIALLY BETWEEN BHM-MGM. A
FEW STRONG STORMS ARE POSSIBLE WITH GUSTY WINDS AND SMALL HAIL.
UPDATES ON THE WAY.

&&

.AVIATION...

00Z TAF DISCUSSION.

THUNDERSTORMS ALONG OUTFLOW BOUNDARY AFFECTING A LARGE PART OF
SOUTHERN ALABAMA THIS EVENING. TAFS WERE ISSUED WITH AN ASSORTMENT
OF VCTS AND TEMPO GROUPS FOR THE NEXT COUPLE OF HOURS AT WHICH
TIME THE CONVECTION IS EXPECTED TO BECOME MORE ISOLATED.
ADDITIONAL THUNDERSTORMS ARE EXPECTED TOMORROW AFTERNOON. COVERAGE
IS EXPECTED TO BE WIDESPREAD ENOUGH TO INCLUDE VC IN THE FORECAST
BEGINNING 18Z.

&&

.BMX WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

75/88
Hazardous weather outlook, Jul 9, 12:58 PM CDT, 6 hours 24 minutes before
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In the hours before

Special weather statement, Jul 9, 6:09 PM CDT, 1 hour 13 minutes before
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Special weather statement, Jul 9, 6:41 PM CDT, 41 minutes before
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Special weather statement, Jul 9, 6:48 PM CDT, 34 minutes before
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Special weather statement, Jul 9, 6:51 PM CDT, 31 minutes before
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Special weather statement, Jul 9, 6:54 PM CDT, 28 minutes before
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Special weather statement, Jul 9, 7:22 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
722 PM CDT MON JUL 9 2012

ALZ021-028-029-100045-
CLAY AL-CLEBURNE AL-RANDOLPH AL-
722 PM CDT MON JUL 9 2012

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN RANDOLPH...SOUTHEASTERN
CLEBURNE AND NORTHEASTERN CLAY COUNTIES UNTIL 745 PM CDT...

AT 718 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR DELTA...OR 8 MILES NORTH OF LAKE WEDOWEE...MOVING
NORTHEAST AT 20 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  FOSTERS CROSS ROADS...
  MORRISON CROSS ROADS...
  WOODLAND...
  RANBURNE...
  HOLLIS CROSSROADS...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3329 8568 3347 8577 3366 8534 3365 8533
      3339 8528
TIME...MOT...LOC 0022Z 237DEG 18KT 3341 8561

56

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 7:29 PM CDTSpecial Weather StatementBMXCoosa, Jefferson, Shelby, Talladega61 min
Jul 9, 7:30 PM CDTSpecial Weather StatementBMXChambers, Lee, Russell, Tallapoosa45 min
Jul 9, 8:00 PM CDTSpecial Weather StatementBMXCleburne30 min
Jul 9, 8:30 PM CDTSpecial Weather StatementBMXCalhoun, Cleburne, St. Clair45 min
Jul 9, 9:15 PM CDTSpecial Weather StatementBMXCalhoun, Cleburne, St. Clair45 min
Jul 9, 9:57 PM CDTSpecial Weather StatementBMXCalhoun, Cherokee, Cleburne, Etowah48 min
Jul 9, 10:36 PM CDTAreal Flood AdvisoryBMXCleburne114 min
Jul 10, 2:46 PM CDTSpecial Weather StatementBMXLowndes, Montgomery, Pike59 min
Jul 10, 2:49 PM CDTSpecial Weather StatementBMXGreene26 min
Jul 10, 3:37 PM CDTSpecial Weather StatementBMXAutauga, Chilton, Elmore, Montgomery53 min
Jul 10, 3:44 PM CDTSpecial Weather StatementBMXTuscaloosa46 min
Jul 10, 4:02 PM CDTSevere Thunderstorm WarningBMXTuscaloosa28 min
Jul 10, 4:17 PM CDTSevere Thunderstorm WarningBMXBibb, Chilton, Coosa, Elmore, Shelby43 min
Jul 10, 4:27 PM CDTSevere Thunderstorm WarningBMXJefferson, Tuscaloosa, Walker48 min
Jul 10, 4:35 PM CDTSpecial Weather StatementBMXFayette, Lamar, Marion, Walker, Winston40 min
Jul 10, 4:37 PM CDTSpecial Weather StatementBMXElmore, Macon, Russell, Tallapoosa38 min
Jul 10, 4:56 PM CDTSevere Thunderstorm WarningBMXChilton, Clay, Coosa, St. Clair, Shelby, Talladega and 1 more49 min
Jul 10, 5:11 PM CDTSpecial Weather StatementBMXLee, Macon, Russell49 min
Jul 10, 5:28 PM CDTSevere Thunderstorm WarningBMXChambers, Lee, Russell50 min
Jul 10, 5:44 PM CDTSevere Thunderstorm WarningBMXCalhoun, Clay, Cleburne, Randolph, St. Clair, Shelby and 1 more44 min
Jul 10, 6:27 PM CDTSpecial Weather StatementBMXBlount, Calhoun, Cherokee, Clay, Cleburne, Etowah and 2 more48 min
Jul 10, 6:47 PM CDTAreal Flood AdvisoryBMXBlount58 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; radar from the NEXRAD Level II archive.