Alert archive / Alabama / Special Weather Statements in 2015

Special Weather Statement, NWS Birmingham, AL

July 21, 2015Walker County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 21, 2015, 5:13 PM CDT for Walker County, Alabama. It was in force for 47 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 21, 2015, 5:13 PM CDT (22:13 UTC)
Expired
Jul 21, 2015, 6:00 PM CDT
In force
47 min
Issued by
NWS Birmingham, AL

County Walker County, AL

The radar

The Birmingham radar (KBMX), 89 km from the middle of the area, began a volume at 22:13 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, 10.2 hours before the alert went out and 87 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, Birmingham, AL at 12:00Z on 2015-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1589 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, Birmingham, AL at 12:00Z on 2015-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 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
1589 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
1019 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

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 21, 3:09 PM CDT, 2 hours 4 minutes earlier.

Area forecast discussion, Jul 21, 3:09 PM CDT, 2 hours 4 minutes before
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Hazardous weather outlook, Jul 21, 2:54 PM CDT, 2 hours 19 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
254 PM CDT TUE JUL 21 2015

ALZ011>015-017>050-222300-
MARION-LAMAR-FAYETTE-WINSTON-WALKER-BLOUNT-ETOWAH-CALHOUN-CHEROKEE-
CLEBURNE-PICKENS-TUSCALOOSA-JEFFERSON-SHELBY-ST. CLAIR-TALLADEGA-
CLAY-RANDOLPH-SUMTER-GREENE-HALE-PERRY-BIBB-CHILTON-COOSA-TALLAPOOSA-
CHAMBERS-MARENGO-DALLAS-AUTAUGA-LOWNDES-ELMORE-MONTGOMERY-MACON-
BULLOCK-LEE-RUSSELL-PIKE-BARBOUR-
254 PM CDT TUE JUL 21 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE
NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM.

.DAY ONE...OUTLOOK THROUGH TONIGHT.

THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY LEVELS WILL
PRODUCE HEAT INDICES NEAR OR ABOVE 105 DEGREES ACROSS MUCH OF
CENTRAL ALABAMA THIS AFTERNOON AND EARLY EVENING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

CONTINUED HOT TEMPERATURES AND HIGH HUMIDITY LEVELS WILL ALLOW THE
HEAT INDICES TO REACH NEAR OR ABOVE 105 DEGREES ACROSS SOUTHERN
PORTIONS OF CENTRAL ALABAMA WEDNESDAY AFTERNOON AND INTO THE
EVENING HOURS.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT IS NOT
EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jul 21, 2:13 PM CDT, 3 hours before
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Special weather statement, Jul 21, 3:01 PM CDT, 2 hours 12 minutes before
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Special weather statement, Jul 21, 3:11 PM CDT, 2 hours 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
311 PM CDT TUE JUL 21 2015

ALZ015-024-212100-
WALKER AL-JEFFERSON AL-
311 PM CDT TUE JUL 21 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN JEFFERSON AND
NORTHEASTERN WALKER COUNTIES UNTIL 400 PM CDT...

AT 311 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
BELOIT...OR NEAR CORDOVA...MOVING SOUTHEAST AT 25 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
NORTHWESTERN BIRMINGHAM...GARDENDALE...FAIRFIELD...FULTONDALE...
SUMITON...CORDOVA...DORA...PLEASANT GROVE...TARRANT...MIDFIELD...
ADAMSVILLE...KIMBERLY...GRAYSVILLE...MORRIS...SYLVAN SPRINGS...
BROOKSIDE...MULGA...SIPSEY...MAYTOWN AND WEST JEFFERSON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3396 8711 3394 8710 3393 8709 3391 8708
      3390 8710 3389 8709 3389 8701 3387 8700
      3386 8696 3382 8695 3382 8692 3366 8670
      3344 8689 3371 8727 3397 8714
TIME...MOT...LOC 2011Z 304DEG 20KT 3375 8714

32/DAVIS
Special weather statement, Jul 21, 3:42 PM CDT, 1 hour 31 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
342 PM CDT TUE JUL 21 2015

ALZ013-015-023-024-212130-
WALKER AL-TUSCALOOSA AL-JEFFERSON AL-FAYETTE AL-
342 PM CDT TUE JUL 21 2015

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN JEFFERSON...WALKER...
NORTHEASTERN TUSCALOOSA AND EASTERN FAYETTE COUNTIES UNTIL 430 PM
CDT...

AT 342 PM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES SOUTH OF CARBON
HILL TO NEAR BINION CREEK LANDING...AND MOVING EAST AT 30 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
SOUTHWESTERN BIRMINGHAM...BESSEMER...HUEYTOWN...JASPER...FAIRFIELD...
SUMITON...CORDOVA...DORA...PLEASANT GROVE...MIDFIELD...ADAMSVILLE...
BRIGHTON...LIPSCOMB...GRAYSVILLE...LAKE VIEW...SYLVAN SPRINGS...
BROOKSIDE...BERRY...PARRISH AND MULGA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3389 8709 3389 8701 3387 8700 3386 8696
      3382 8695 3384 8690 3332 8689 3328 8693
      3327 8697 3325 8698 3325 8702 3331 8757
      3384 8766 3392 8709
TIME...MOT...LOC 2042Z 266DEG 28KT 3379 8753 3335 8753

32/DAVIS
Special weather statement, Jul 21, 4:41 PM CDT, 32 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
441 PM CDT TUE JUL 21 2015

ALZ024>026-212245-
JEFFERSON AL-ST. CLAIR AL-SHELBY AL-
441 PM CDT TUE JUL 21 2015

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL JEFFERSON...
NORTHEASTERN SHELBY AND SOUTHWESTERN ST. CLAIR COUNTIES UNTIL 545 PM
CDT...

AT 441 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
SOUTHWESTERN BIRMINGHAM...MOVING EAST AT 30 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
BIRMINGHAM...HOOVER...VESTAVIA HILLS...BESSEMER...HOMEWOOD...MOUNTAIN
BROOK...HUEYTOWN...PELL CITY...IRONDALE...LEEDS...MOODY...
FAIRFIELD...PLEASANT GROVE...TARRANT...MIDFIELD...ADAMSVILLE...
BRIGHTON...LIPSCOMB...RIVERSIDE AND VINCENT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3360 8618 3359 8622 3356 8621 3355 8619
      3354 8619 3352 8623 3350 8623 3349 8625
      3349 8627 3351 8626 3351 8628 3346 8630
      3341 8634 3339 8638 3338 8638 3339 8697
      3356 8698 3360 8629
TIME...MOT...LOC 2141Z 273DEG 26KT 3349 8682

87/GRANTHAM
Special weather statement, Jul 21, 5:13 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
513 PM CDT TUE JUL 21 2015

ALZ014-015-212300-
WALKER AL-WINSTON AL-
513 PM CDT TUE JUL 21 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN WALKER AND
SOUTHEASTERN WINSTON COUNTIES UNTIL 600 PM CDT...

AT 512 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
CAMP MCDOWELL...OR 8 MILES SOUTHWEST OF ARLEY...MOVING EAST AT 30
MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
JASPER...LYNN...ARLEY...SIPSEY...NAUVOO...FALLS CITY...CAMP
MCDOWELL...CURRY...SMITH DAM...SMITH LAKE...ASHBANK...POPLAR
SPRINGS...RACCOON BRANCH...BLACK POND...BEAR BRANCH...CLEAR CREEK...
BATTLE BRANCH...CURTIS CROSSROADS...MAPLE BRANCH AND LITTLE DISMAL
CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3406 8711 3399 8711 3399 8715 3397 8714
      3396 8711 3392 8708 3389 8709 3389 8701
      3387 8700 3386 8697 3384 8695 3380 8695
      3380 8697 3379 8697 3379 8700 3397 8757
      3412 8746
TIME...MOT...LOC 2212Z 290DEG 28KT 3402 8734

87/GRANTHAM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 7:01 PM CDTSpecial Weather StatementBMXShelby44 min
Jul 21, 1:23 PM CDTSpecial Weather StatementBMXPike52 min
Jul 21, 1:46 PM CDTSpecial Weather StatementBMXLamar44 min
Jul 21, 2:13 PM CDTSpecial Weather StatementBMXBarbour47 min
Jul 21, 3:01 PM CDTSpecial Weather StatementBMXTuscaloosa44 min
Jul 21, 3:11 PM CDTSpecial Weather StatementBMXJefferson49 min
Jul 21, 3:42 PM CDTSpecial Weather StatementBMXJefferson, Walker48 min
Jul 21, 4:41 PM CDTSpecial Weather StatementBMXJefferson64 min
Jul 21, 6:23 PM CDTSpecial Weather StatementBMXCoosa, Tallapoosa67 min

Nearby

Special Weather Statements in Alabama, 2015Every special weather statement in 2015

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.