Alert archive / Alabama / Special Weather Statements in 2011
Special Weather Statement, NWS Birmingham, AL
NWS Birmingham, AL issued this special weather statement at Jul 5, 2011, 6:22 PM CDT for Shelby County, Alabama. It was in force for 38 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 5, 2011, 6:22 PM CDT (23:22 UTC)
- Expired
- Jul 5, 2011, 7:00 PM CDT
- In force
- 38 min
- Issued by
- NWS Birmingham, AL
County Shelby County, AL
The radar
The Birmingham radar (KBMX), 11 km from the middle of the area, began a volume at 23:21 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, 11.4 hours before the alert went out and 11 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
- 482 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1113 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 19 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 5, 2:58 PM CDT, 3 hours 24 minutes earlier.
Area forecast discussion, Jul 5, 2:58 PM CDT, 3 hours 24 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BIRMINGHAM AL 258 PM CDT TUE JUL 5 2011 .DISCUSSION... NOTHING REALLY HAS CHANGED OVER THE PAST 24 HOURS AS UPPER TROUGHING OVER THE SOUTHEAST IS ALLOWING FOR SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS TO DEVELOP. THE PREFERRED AREA TODAY IS ACROSS THE SOUTHERN COUNTIES WHERE SKIES WERE MOSTLY CLEAR THIS MORNING AND AREAS REACHED THEIR CONVECTIVE TEMPERATURES BY EARLY AFTERNOON. THE SAME GENERAL PATTERN CONTINUES THROUGH SATURDAY WITH ABOVE AVERAGE RAIN CHANCES DURING THE DAY AND INTO THE EVENING. THIS WILL KEEP HIGHS NEAR NORMAL OR PERHAPS SLIGHTLY BELOW IN THE FEW PLACES THAT REMAIN OVERCAST DURING THE DAY. BY SUNDAY...THE UPPER RIDGING OVER WEST TEXAS BECOMES CENTERED OVER SOUTHERLY MISSOURI. THIS WILL BEGIN TO LIMIT AFTERNOON AND EVENING CONVECTION SOMEWHAT WITH ISOLATED AT BEST ACROSS THE NORTH FOR NEXT WEEK AND SLIGHTLY HIGHER CHANCES IN THE SOUTHEASTERN COUNTIES WHICH ARE FARTHEST FROM THE RIDGE. WITH LESSER RAIN CHANCES AND CLOUD COVER...TEMPERATURES SHOULD RETURN TO THE MID 90S AND PERHAPS HIGHER BY THE END OF THE FORECAST. && .AVIATION...18Z TAF DISCUSSION. SEVERAL BOUNDARIES WERE AGAIN NOTED ACROSS CENTRAL ALABAMA TODAY. IT IS UNCLEAR EXACTLY WHERE THUNDERSTORMS WILL INITIATE...BUT ALL SITES WILL LIKELY SEE SOME ACTIVITY THIS AFTERNOON. SOME OF THE STORMS COULD HAVE STRONG WINDS AND HEAVY RAINFALL. RAINFALL COULD REDUCE VISIBILITIES...BUT NOT CONFIDENT ENOUGH AS TO WHERE THE HEAVIEST SHOWERS WILL OCCUR. ALL ACTIVITY SHOULD DISSIPATE SHORTLY AFTER SUNSET. MVFR VISIBILITIES WILL BE POSSIBLE AGAIN TOMORROW MORNING. AREA SOUNDINGS ARE SHOWING AMPLE MOISTURE SO WITH CALM WINDS AND LITTLE CLOUD COVER...FOG SHOULD HAVE NO PROBLEM FORMING. ONCE THE SUN RISES...FOG SHOULD MIX OUT AND CLOUDS WILL LIKELY BEGIN TO DEVELOP. NOTICE...KEET TAF WILL HAVE (AMD LTD TO VIS WIND AND WX) AMENDED TO THE END OF THE FORECAST UNTIL FURTHER NOTICE. THE CEILOMETER DATA WILL BE GOING THROUGH NUMEROUS TESTS AND MONITORED FOR ACCURACY. && .PRELIMINARY POINT TEMPS/POPS... GADSDEN 67 89 68 90 69 / 20 50 30 40 30 ANNISTON 69 90 70 91 71 / 30 50 30 40 30 BIRMINGHAM 70 91 71 93 73 / 30 50 30 40 30 TUSCALOOSA 70 92 71 94 72 / 30 40 30 40 30 CALERA 70 90 71 91 72 / 40 50 30 40 30 AUBURN 71 90 71 90 70 / 50 40 30 40 30 MONTGOMERY 71 93 72 93 73 / 50 40 30 40 30 TROY 69 92 70 92 71 / 50 40 30 40 30 && .BMX WATCHES/WARNINGS/ADVISORIES... NONE. && 88/73
Hazardous weather outlook, Jul 5, 1:16 PM CDT, 5 hours 6 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BIRMINGHAM AL 116 PM CDT TUE JUL 5 2011 ALZ011>015-017>050-061816- 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- 116 PM CDT TUE JUL 5 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 STRONG TO SEVERE THUNDERSTORMS WILL DEVELOP DURING THE HEATING OF THE DAY...MAINLY BETWEEN 1 PM AND 8 PM. THE STORMS COULD PRODUCE WIND GUSTS OF 50 TO 60 MPH. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. 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 5, 5:01 PM CDT, 1 hour 21 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
501 PM CDT TUE JUL 5 2011
ALZ028-036-037-052245-
CLAY AL-COOSA AL-TALLAPOOSA AL-
501 PM CDT TUE JUL 5 2011
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN TALLAPOOSA...
NORTHEASTERN COOSA AND WESTERN CLAY COUNTIES UNTIL 545 PM CDT...
AT 500 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR KELLYTON...MOVING NORTHWEST 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...
KELLYTON...
GOODWATER...
CREWSVILLE...
BRADFORD...
HATCHET...
&&
LAT...LON 3292 8589 3285 8608 3310 8625 3310 8618
3319 8617 3320 8612 3326 8612 3329 8606
3329 8598 3335 8598 3342 8587
TIME...MOT...LOC 2201Z 156DEG 10KT 3297 8603Special weather statement, Jul 5, 5:33 PM CDT, 49 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 533 PM CDT TUE JUL 5 2011 ALZ025-027-035-036-052315- CHILTON AL-COOSA AL-SHELBY AL-TALLADEGA AL- 533 PM CDT TUE JUL 5 2011 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN TALLADEGA...SOUTHERN SHELBY...NORTHWESTERN COOSA AND NORTHERN CHILTON COUNTIES UNTIL 615 PM CDT... AT 530 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG THUNDERSTORM 6 MILES NORTHEAST OF UNION GROVE...OR 9 MILES SOUTH OF COLUMBIANA...MOVING NORTHEAST AT 5 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE... COLUMBIANA... TALLADEGA SPRINGS... WILSONVILLE... BLUE SPRINGS... FAYETTEVILLE... && LAT...LON 3330 8652 3317 8626 3297 8658 3306 8676 TIME...MOT...LOC 2233Z 231DEG 3KT 3305 8661
Special weather statement, Jul 5, 5:49 PM CDT, 33 minutes before
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</html>Special weather statement, Jul 5, 6:15 PM CDT, 7 minutes before
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</html>Special weather statement, Jul 5, 6:18 PM CDT, 4 minutes before
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</html>Special weather statement, Jul 5, 6:22 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 5, 2:08 PM CDT | Special Weather Statement | BMX | Sumter | 37 min |
| Jul 5, 2:16 PM CDT | Severe Thunderstorm Warning | BMX | Lowndes | 29 min |
| Jul 5, 2:29 PM CDT | Special Weather Statement | BMX | Marengo | 46 min |
| Jul 5, 2:44 PM CDT | Special Weather Statement | BMX | Sumter | 46 min |
| Jul 5, 3:12 PM CDT | Special Weather Statement | BMX | Marengo | 48 min |
| Jul 5, 3:54 PM CDT | Special Weather Statement | BMX | Autauga | 36 min |
| Jul 5, 4:09 PM CDT | Special Weather Statement | BMX | Dallas, Hale, Perry | 51 min |
| Jul 5, 5:01 PM CDT | Special Weather Statement | BMX | Clay | 44 min |
| Jul 5, 5:33 PM CDT | Special Weather Statement | BMX | Shelby | 42 min |
| Jul 5, 5:43 PM CDT | Severe Thunderstorm Warning | BMX | Chilton, Coosa, Shelby, Talladega | 32 min |
| Jul 5, 5:49 PM CDT | Special Weather Statement | BMX | Jefferson | 26 min |
| Jul 5, 6:15 PM CDT | Special Weather Statement | BMX | Jefferson | 45 min |
| Jul 5, 6:18 PM CDT | Special Weather Statement | BMX | Talladega | 42 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.