Alert archive / Alabama / Special Weather Statements in 2011
Special Weather Statement, NWS Birmingham, AL
NWS Birmingham, AL issued this special weather statement at Jul 13, 2011, 4:15 PM CDT for Lamar County, Alabama. It was in force for 30 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 13, 2011, 4:15 PM CDT (21:15 UTC)
- Expired
- Jul 13, 2011, 4:45 PM CDT
- In force
- 30 min
- Issued by
- NWS Birmingham, AL
County Lamar County, AL
The radar
The Columbus AFB radar (KGWX), 36 km from the middle of the area, began a volume at 21:17 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, 9.3 hours before the alert went out and 137 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
- 1849 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 939 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jul 13, 3:13 PM CDT, 1 hour 2 minutes earlier.
Area forecast discussion, Jul 13, 3:13 PM CDT, 1 hour 2 minutes before
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</html>Hazardous weather outlook, Jul 13, 1:21 PM CDT, 2 hours 54 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BIRMINGHAM AL 121 PM CDT WED JUL 13 2011 ALZ011>015-017>050-141822- 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- 121 PM CDT WED JUL 13 2011 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 THIS AFTERNOON THROUGH 8 PM... WITH DAMAGING WINDS AS THE MAIN THREAT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Jul 13, 2:45 PM CDT, 1 hour 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 245 PM CDT WED JUL 13 2011 ALZ024-025-132015- JEFFERSON AL-SHELBY AL- 245 PM CDT WED JUL 13 2011 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN SHELBY AND EASTERN JEFFERSON COUNTIES UNTIL 315 PM CDT... AT 241 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG THUNDERSTORM NEAR BARBER MOTORSPORTS PARK...OR NEAR LEEDS. THIS STORM WAS NEARLY STATIONARY. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH FREQUENT DANGEROUS LIGHTNING. LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE... LEEDS... VANDIVER... 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. && LAT...LON 3354 8649 3345 8649 3346 8664 3357 8665 TIME...MOT...LOC 1945Z 277DEG 0KT 3352 8661 61
Special weather statement, Jul 13, 2:56 PM CDT, 1 hour 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
256 PM CDT WED JUL 13 2011
ALZ026-132030-
ST. CLAIR AL-
256 PM CDT WED JUL 13 2011
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL ST. CLAIR COUNTY UNTIL
330 PM CDT...
AT 255 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM ASHVILLE TO ARGO...AND
MOVING SOUTH AT 10 MPH.
HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THESE STORMS...ALONG WITH FREQUENT DANGEROUS LIGHTNING.
LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
ODENVILLE...
MOODY...
MARGARET...
BRANCHVILLE...
BALD ROCK...
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
&&
LAT...LON 3370 8617 3370 8619 3368 8621 3366 8617
3362 8617 3355 8654 3365 8654 3366 8652
3373 8652 3391 8618
TIME...MOT...LOC 1957Z 002DEG 8KT 3385 8623 3367 8651
61Special weather statement, Jul 13, 3:46 PM CDT, 29 minutes before
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</html>Local storm report, Jul 13, 3:57 PM CDT, 18 minutes before
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</html>Special weather statement, Jul 13, 4:15 PM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 7:06 PM CDT | Special Weather Statement | BMX | Bibb | 39 min |
| Jul 12, 7:27 PM CDT | Special Weather Statement | BMX | Hale | 33 min |
| Jul 12, 7:50 PM CDT | Special Weather Statement | BMX | Lowndes | 25 min |
| Jul 13, 1:18 PM CDT | Special Weather Statement | BMX | Tuscaloosa | 27 min |
| Jul 13, 1:50 PM CDT | Special Weather Statement | BMX | Pickens | 25 min |
| Jul 13, 2:25 PM CDT | Special Weather Statement | BMX | Fayette | 35 min |
| Jul 13, 2:30 PM CDT | Special Weather Statement | BMX | Winston | 30 min |
| Jul 13, 2:41 PM CDT | Special Weather Statement | BMX | Tuscaloosa | 34 min |
| Jul 13, 2:45 PM CDT | Special Weather Statement | BMX | Shelby | 30 min |
| Jul 13, 2:56 PM CDT | Special Weather Statement | BMX | St. Clair | 34 min |
| Jul 13, 3:09 PM CDT | Severe Thunderstorm Warning | BMX | Jefferson | 36 min |
| Jul 13, 3:38 PM CDT | Areal Flood Advisory | BMX | Jefferson | 112 min |
| Jul 13, 3:46 PM CDT | Special Weather Statement | BMX | Macon | 44 min |
| Jul 13, 4:12 PM CDT | Special Weather Statement | BMX | Sumter | 33 min |
| Jul 13, 4:37 PM CDT | Special Weather Statement | BMX | Marengo | 23 min |
| Jul 13, 5:15 PM CDT | Special Weather Statement | BMX | Dallas | 30 min |
| Jul 13, 5:19 PM CDT | Special Weather Statement | BMX | Elmore | 26 min |
Nearby
Special Weather Statements in Alabama, 2011Every special weather statement in 2011
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.