Alert archive / Alabama / Special Weather Statements in 2012
Special Weather Statement, NWS Birmingham, AL
NWS Birmingham, AL issued this special weather statement at May 6, 2012, 9:29 PM CDT for Chambers County, Alabama. It was in force for 46 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 6, 2012, 9:29 PM CDT (02:29 UTC)
- Expired
- May 6, 2012, 10:15 PM CDT
- In force
- 46 min
- Issued by
- NWS Birmingham, AL
County Chambers County, AL
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 2.5 hours before the alert went out and 84 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
- 632 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1817 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- -4 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 May 6, 6:46 PM CDT, 2 hours 43 minutes earlier.
Area forecast discussion, May 6, 6:46 PM CDT, 2 hours 43 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BIRMINGHAM AL 646 PM CDT SUN MAY 6 2012 .UPDATE... FOR AVIATION. && .DISCUSSION... SHORT TERM...THIS AFTERNOON AND TONIGHT MOST OF THE STORMS FROM EARLIER TODAY HAVE PUSHED SOUTH OF THE FORECAST AREA ALONG AN OUTFLOW BOUNDARIES. A FEW BOUNDARIES STILL EXIST FROM PREVIOUS CONVECTION AND HAVE INITIATED A COUPLE OF STORMS ACROSS MONTGOMERY AND BULLOCK COUNTIES. CLEARING HAS OCCURRED BEHIND THE CONVECTION MAINLY NORTH OF A LINE FROM LIVINGSTON TO CLANTON TO ROANOKE. HOWEVER...WEAK CONVECTIVE INHIBITION IS IN PLACE ACROSS AREAS CURRENTLY WITH SUN. QUESTIONS STILL REMAIN ABOUT REDEVELOPMENT LATER THIS AFTERNOON. ANY REDEVELOPMENT SHOULD REMAIN SCATTERED WITH PULSE SEVERE STORMS POSSIBLE WITH DAYTIME HEATING THIS AFTERNOON. A FEW SHOWERS AND STORMS HAVE ALREADY BEGUN TO REDEVELOP ACROSS THE TENNESSEE VALLEY. VISIBLE SATELLITE SHOWS A LIMITED AMOUNT OF CU ACROSS CENTRAL ALABAMA. THEREFORE...ADDITIONAL CONVECTION MAY REMAIN RATHER ISOLATED. THE MAIN THREATS FROM ANY STORMS THAT FORM WILL BE LARGE HAIL AND DAMAGING WINDS. A FEW OF THESE SHOWERS AND THUNDERSTORMS COULD PERSIST INTO THE OVERNIGHT HOURS BUT SHOULD WEAKEN SHORTLY AFTER SUNSET DUE TO THE LOSS OF DAYTIME HEATING. MA && .AVIATION... 00Z TAF DISCUSSION. ROUND TWO HAS BEGUN...ALTHOUGH MORE ISOLATED THAN EARLIER. MOST OF THE ACTIVITY HAS DEVELOPED ALONG A BOUNDARY THAT HAS DEVELOPED NEAR THE US 78 CORRIDOR IN NORTHWESTERN ALABAMA. STORMS HAVE GONE UP QUITE HIGH AND QUICKLY. THE INTERESTING PART OF IT IS THAT IT APPEARS THAT THE ACTIVITY MAY ACTUALLY SPLIT MOST OF THE TERMINALS. WENT AHEAD AND INCLUDED VCTS FOR TCL...ANB...BHM..AND EET...WITH EET GETTING A TEMPO FROM 00Z TO 02Z. WILL AMEND THE OTHER SITES IF NEEDED. OTHERWISE...VFR CONDITIONS THROUGH 06Z OUTSIDE THE RAIN AREAS. KEPT THE CEILINGS VFR OVERNIGHT WITH VIS DROPPING INTO MVFR TOWARD 11Z. WILL TRY TO REEVALUATE THE POTENTIAL LOWER CLOUDS AND FOG ON THE NEXT PACKAGE AS ONGOING WEATHER TOOK PRECEDENCE. NOTE***THE NATIONAL WEATHER SERVICE IS ISSUING SEASONAL TERMINAL FORECASTS FOR THE TALLADEGA MUNICIPAL AIRPORT (KASN) IN TALLADEGA...ALABAMA. THE FORECASTS WILL LAST THROUGH AT LEAST THE 9TH OF MAY. DUE TO THE LIMITED AVAILABILITY OF OBSERVATIONS...KASN TAF WILL HAVE AMD NOT SKED APPENDED TO THE END OF THE FORECAST. && .BMX WATCHES/WARNINGS/ADVISORIES... NONE. &&
Hazardous weather outlook, May 6, 8:20 PM CDT, 1 hour 9 minutes before
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</html>In the hours before
Local storm report, May 6, 7:55 PM CDT, 1 hour 34 minutes before
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</html>Special weather statement, May 6, 9:29 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 |
|---|---|---|---|---|
| May 6, 7:04 PM CDT | Severe Thunderstorm Warning | BMX | Fayette, Walker | 41 min |
| May 6, 7:20 PM CDT | Special Weather Statement | BMX | Jefferson | 40 min |
| May 6, 7:44 PM CDT | Special Weather Statement | BMX | Jefferson, Tuscaloosa | 46 min |
| May 6, 7:54 PM CDT | Special Weather Statement | BMX | Randolph | 51 min |
| May 6, 8:19 PM CDT | Special Weather Statement | BMX | Pickens | 41 min |
| May 6, 8:30 PM CDT | Special Weather Statement | BMX | Shelby | 45 min |
| May 6, 9:56 PM CDT | Special Weather Statement | BMX | Walker | 49 min |
| May 6, 10:13 PM CDT | Special Weather Statement | BMX | Lee | 47 min |
| May 6, 10:27 PM CDT | Special Weather Statement | BMX | Calhoun | 48 min |
| May 6, 10:41 PM CDT | Special Weather Statement | BMX | Macon | 49 min |
| May 6, 11:26 PM CDT | Special Weather Statement | BMX | Elmore | 49 min |
| May 7, 12:54 PM CDT | Special Weather Statement | BMX | Fayette, Lamar | 51 min |
| May 7, 1:20 PM CDT | Special Weather Statement | BMX | Pickens | 40 min |
| May 7, 1:42 PM CDT | Special Weather Statement | BMX | Marion | 48 min |
| May 7, 1:44 PM CDT | Special Weather Statement | BMX | Fayette, Pickens | 46 min |
| May 7, 2:15 PM CDT | Special Weather Statement | BMX | Greene, Sumter | 45 min |
| May 7, 2:29 PM CDT | Special Weather Statement | BMX | Tuscaloosa, Walker | 46 min |
| May 7, 2:45 PM CDT | Severe Thunderstorm Warning | BMX | Walker | 45 min |
| May 7, 3:05 PM CDT | Special Weather Statement | BMX | Greene, Hale, Sumter | 40 min |
| May 7, 3:15 PM CDT | Special Weather Statement | BMX | Bibb, Blount, Jefferson, Shelby | 45 min |
| May 7, 3:54 PM CDT | Special Weather Statement | BMX | Jefferson | 51 min |
| May 7, 3:56 PM CDT | Flash Flood Warning | BMX | Blount | 3 hr |
| May 7, 3:56 PM CDT | Special Weather Statement | BMX | Jefferson | 49 min |
| May 7, 4:07 PM CDT | Special Weather Statement | BMX | Blount, St. Clair | 38 min |
| May 7, 4:29 PM CDT | Special Weather Statement | BMX | Shelby, Talladega | 46 min |
| May 7, 4:55 PM CDT | Special Weather Statement | BMX | Calhoun | 50 min |
| May 7, 5:16 PM CDT | Special Weather Statement | BMX | Clay, Coosa, Talladega | 44 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.