Alert archive / Alabama / Special Weather Statements in 2012
Special Weather Statement, NWS Birmingham, AL
NWS Birmingham, AL issued this special weather statement at Aug 18, 2012, 4:58 PM CDT for Sumter 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
- Aug 18, 2012, 4:58 PM CDT (21:58 UTC)
- Expired
- Aug 18, 2012, 5:30 PM CDT
- In force
- 32 min
- Issued by
- NWS Birmingham, AL
County Sumter County, AL
The radar
The Birmingham radar (KBMX), 125 km from the middle of the area, began a volume at 21:58 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
Jackson, MS (KJAN), launched 12:00Z, 10.0 hours before the alert went out and 207 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
- 1913 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 828 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>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 18, 3:15 PM CDT, 1 hour 43 minutes earlier.
Area forecast discussion, Aug 18, 3:15 PM CDT, 1 hour 43 minutes before
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</html>Hazardous weather outlook, Aug 18, 12:52 PM CDT, 4 hours 6 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BIRMINGHAM AL 1252 PM CDT SAT AUG 18 2012 ALZ011>015-017>050-191800- AUTAUGA-BARBOUR-BIBB-BLOUNT-BULLOCK-CALHOUN-CHAMBERS-CHEROKEE- CHILTON-CLAY-CLEBURNE-COOSA-DALLAS-ELMORE-ETOWAH-FAYETTE-GREENE-HALE- JEFFERSON-LAMAR-LEE-LOWNDES-MACON-MARENGO-MARION-MONTGOMERY-PERRY- PICKENS-PIKE-RANDOLPH-RUSSELL-SHELBY-ST CLAIR-SUMTER-TALLADEGA- TALLAPOOSA-TUSCALOOSA-WALKER-WINSTON- 1252 PM CDT SAT AUG 18 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM. .DAY ONE...THIS AFTERNOON AND TONIGHT. ISOLATED SEVERE STORMS ARE POSSIBLE THROUGH 7 PM FOR AREAS ALONG AND SOUTH OF A LINE FROM GEIGER...TO MOUNDVILLE...TO SELMA LINE. DAMAGING WINDS WILL BE THE PRIMARY THREAT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT ACROSS THE SOUTHWEST PORTIONS OF CENTRAL ALABAMA.
In the hours before
Local storm report, Aug 18, 11:50 AM CDT, 5 hours 8 minutes before
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</html>Special weather statement, Aug 18, 4:58 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
458 PM CDT SAT AUG 18 2012
ALZ030-039-182230-
MARENGO AL-SUMTER AL-
458 PM CDT SAT AUG 18 2012
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN SUMTER AND
NORTHWESTERN MARENGO COUNTIES UNTIL 530 PM CDT...
AT 453 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR COATOPA...OR 12 MILES WEST OF DEMOPOLIS...MOVING
NORTHEAST AT 10 MPH.
PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.
LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
DEMOPOLIS...
DUG HILL...
US 80 AND AL 28...
DEMOPOLIS MUNICIPAL AIRPORT...
MCDOWELL...
&&
LAT...LON 3260 8802 3263 8793 3262 8786 3261 8784
3260 8784 3259 8786 3261 8788 3260 8790
3253 8786 3255 8784 3254 8782 3252 8782
3252 8773 3249 8773 3233 8804 3247 8817
TIME...MOT...LOC 2158Z 233DEG 10KT 3246 8802
GRANTHAMThe office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 4:34 AM CDT | Special Weather Statement | BMX | Pickens | 56 min |
| Aug 18, 5:04 AM CDT | Severe Thunderstorm Warning | BMX | Pickens | 26 min |
| Aug 18, 5:14 AM CDT | Special Weather Statement | BMX | Greene, Sumter | 46 min |
| Aug 18, 5:27 AM CDT | Severe Thunderstorm Warning | BMX | Greene, Hale, Pickens, Tuscaloosa | 48 min |
| Aug 18, 6:08 AM CDT | Severe Thunderstorm Warning | BMX | Bibb, Hale, Tuscaloosa | 52 min |
| Aug 18, 6:48 AM CDT | Severe Thunderstorm Warning | BMX | Bibb, Chilton, Shelby | 24 min |
| Aug 18, 8:01 AM CDT | Special Weather Statement | BMX | Autauga, Coosa, Elmore | 44 min |
| Aug 18, 5:44 PM CDT | Special Weather Statement | BMX | Marengo | 46 min |
| Aug 18, 6:07 PM CDT | Areal Flood Advisory | BMX | Winston | 4 hr |
| Aug 18, 6:18 PM CDT | Special Weather Statement | BMX | Dallas, Perry | 57 min |
| Aug 18, 6:34 PM CDT | Special Weather Statement | BMX | Bibb | 56 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.