Alert archive / Alabama / Special Weather Statements in 2013

Special Weather Statement, NWS Birmingham, AL

April 27, 2013Blount County, Alabama

NWS Birmingham, AL issued this special weather statement at Apr 27, 2013, 7:49 PM CDT for Blount County, Alabama. It was in force for 41 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: Apr 27, 2013, 7:49 PM CDT (00:49 UTC)
Expired: Apr 27, 2013, 8:30 PM CDT
In force: 41 min
Issued by: NWS Birmingham, AL

County Blount County, AL

The radar

The Birmingham radar (KBMX), 81 km from the middle of the area, began a volume at 00:53 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

Nashville Metro, TN (KBNA), launched 00:00Z, 0.8 hours before the alert went out and 249 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 108 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 579 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 170 m²/s²
0-3 km storm-relative helicity: 244 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

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 Apr 27, 6:59 PM CDT, 50 minutes earlier.

Area forecast discussion, Apr 27, 6:59 PM CDT, 50 minutes before

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Hazardous weather outlook, Apr 27, 5:42 PM CDT, 2 hours 7 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
542 PM CDT SAT APR 27 2013

ALZ011>015-017>050-282245-
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-
542 PM CDT SAT APR 27 2013

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

.DAY ONE...TONIGHT.

THERE IS A THREAT FOR SEVERE STORMS GENERALLY ALONG AND NORTH OF
THE INTERSTATE 59 CORRIDOR THROUGH EARLY SUNDAY MORNING...OR ALONG
AND NORTH OF A LINE FROM CARROLLTON...TO HOOVER...TO ANNISTON. THE
MAIN THREATS WILL BE DAMAGING STRAIGHT LINE WINDS AND LARGE HAIL.

.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 MAY BE
NEEDED THIS EVENING.

In the hours before

Special weather statement, Apr 27, 5:48 PM CDT, 2 hours 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
548 PM CDT SAT APR 27 2013

ALZ022-272330-
PICKENS AL-
548 PM CDT SAT APR 27 2013

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN PICKENS COUNTY UNTIL 630
PM CDT...

AT 547 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR PICKENSVILLE...MOVING NORTHEAST AT 35 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  CARROLLTON...
  REFORM...
  ETHELSVILLE...
  PINE GROVE...
  MCSHAN...

&&

LAT...LON 3338 8830 3353 8810 3352 8784 3335 8784
      3317 8827 3323 8832
TIME...MOT...LOC 2248Z 239DEG 30KT 3329 8823

GRANTHAM

Special weather statement, Apr 27, 6:09 PM CDT, 1 hour 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
609 PM CDT SAT APR 27 2013

ALZ014-015-280000-
WALKER AL-WINSTON AL-
609 PM CDT SAT APR 27 2013

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN WINSTON AND NORTHERN
WALKER COUNTIES UNTIL 700 PM CDT...

AT 610 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM 5 MILES EAST OF BRILLIANT...OR 7 MILES NORTHEAST OF
WINFIELD...MOVING EAST AT 40 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...
  LYNN...
  CARBON HILL...
  KANSAS...
  ASHBANK...
  NAUVOO...

&&

LAT...LON 3400 8711 3398 8714 3392 8708 3390 8709
      3389 8701 3387 8699 3386 8697 3384 8695
      3389 8763 3408 8764 3408 8711
TIME...MOT...LOC 2310Z 272DEG 37KT 3399 8763

GRANTHAM

Local storm report, Apr 27, 6:12 PM CDT, 1 hour 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
612 PM CDT SAT APR 27 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0534 PM     TSTM WND DMG     5 NE SULLIGENT          33.94N 88.06W
04/27/2013                   LAMAR              AL   EMERGENCY MNGR

            4 TREES DOWN ALONG MOUNT HEBRON ROAD...ONE OF WHICH WAS
            LARGE AND WAS BLOCKING THE ROAD.

&&

AG

Special weather statement, Apr 27, 6:20 PM CDT, 1 hour 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
620 PM CDT SAT APR 27 2013

ALZ031-272345-
GREENE AL-
620 PM CDT SAT APR 27 2013

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN GREENE COUNTY UNTIL 645
PM CDT...

AT 620 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM 6 MILES WEST OF MANTUA...OR 10 MILES SOUTHEAST OF
ALICEVILLE...MOVING EAST AT 35 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  MANTUA...
  UNION...
  JENA...
  KNOXVILLE...
  SNODDY...

&&

LAT...LON 3305 8807 3304 8804 3307 8802 3308 8797
      3312 8794 3315 8785 3302 8783 3302 8772
      3299 8771 3298 8775 3297 8775 3294 8806
      3304 8808
TIME...MOT...LOC 2320Z 261DEG 31KT 3304 8797

GRANTHAM

Local storm report, Apr 27, 6:21 PM CDT, 1 hour 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
621 PM CDT SAT APR 27 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0559 PM     HAIL             MCSHAN                  33.38N 88.14W
04/27/2013  E1.00 INCH       PICKENS            AL   BROADCAST MEDIA

            PEA TO QUARTER SIZE HAIL REPORTED IN MCSHAN. REPORTED
            THROUGH SOCIAL MEDIA.

&&

GGOGGINS

Special weather statement, Apr 27, 6:52 PM CDT, 57 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 8:41 PM CDT	Special Weather Statement	BMX	Blount	34 min
Apr 27, 9:00 PM CDT	Special Weather Statement	BMX	Etowah	60 min
Apr 28, 12:41 AM CDT	Special Weather Statement	BMX	Marion	64 min
Apr 28, 1:18 AM CDT	Special Weather Statement	BMX	Lamar	57 min
Apr 28, 1:48 AM CDT	Special Weather Statement	BMX	Marion	57 min
Apr 28, 2:19 AM CDT	Special Weather Statement	BMX	Winston	56 min
Apr 28, 2:47 AM CDT	Special Weather Statement	BMX	Winston	43 min
Apr 28, 5:34 AM CDT	Special Weather Statement	BMX	Blount	41 min
Apr 28, 10:31 AM CDT	Special Weather Statement	BMX	Lamar	29 min
Apr 28, 12:13 PM CDT	Areal Flood Advisory	BMX	Lamar	2 hr
Apr 28, 12:53 PM CDT	Special Weather Statement	BMX	Coosa	37 min
Apr 28, 1:33 PM CDT	Special Weather Statement	BMX	Blount	27 min
Apr 28, 1:38 PM CDT	Special Weather Statement	BMX	Pickens, Tuscaloosa	52 min
Apr 28, 2:31 PM CDT	Areal Flood Advisory	BMX	Blount, Cherokee, Etowah	3 hr
Apr 28, 2:56 PM CDT	Areal Flood Advisory	BMX	Calhoun	3 hr
Apr 28, 3:38 PM CDT	Flash Flood Warning	BMX	Calhoun	3 hr
Apr 28, 4:12 PM CDT	Special Weather Statement	BMX	Shelby	63 min
Apr 28, 4:15 PM CDT	Areal Flood Advisory	BMX	Shelby, Talladega	3 hr

Nearby

Special Weather Statements in Alabama, 2013 Every special weather statement in 2013

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.