Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 233, NWS Birmingham, AL

May 26, 2011Calhoun County, Cherokee County, Etowah County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at May 26, 2011, 1:56 PM CDT for Calhoun County, Cherokee County, Etowah County, Alabama. It was in force for 49 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 26, 2011, 1:56 PM CDT (18:56 UTC)
Expired: May 26, 2011, 2:45 PM CDT
In force: 49 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Calhoun County, AL, Cherokee County, AL, Etowah County, AL

The radar

The Northeast Alabama radar (KHTX), 118 km from the middle of the area, began a volume at 18:59 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 26, 9:15 AM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.9 hours before the alert went out and 125 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: 516 J/kg
Mixed-layer CIN: -136 J/kg
Mixed-layer LCL: 708 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: -8 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

520 
WUUS54 KBMX 261856
SVRBMX
ALC015-019-055-261945-
/O.NEW.KBMX.SV.W.0233.110526T1856Z-110526T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
156 PM CDT THU MAY 26 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CALHOUN COUNTY IN EAST CENTRAL ALABAMA...
  SOUTH CENTRAL CHEROKEE COUNTY IN NORTHEAST ALABAMA...
  SOUTHEASTERN ETOWAH COUNTY IN NORTHEAST ALABAMA...

* UNTIL 245 PM CDT

* AT 156 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
  NORTHEAST OF OHATCHEE...OR 6 MILES SOUTHEAST OF MARKTON...AND
  MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  JACKSONVILLE...HOKES BLUFF...PIEDMONT...TENNALA...COBB CITY...
  REAVES AND SPRING GARDEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS.

&&

TO REPORT SEVERE WEATHER...
CALL 1-800-856-0758.

LAT...LON 3395 8550 3394 8553 3393 8553 3373 8589
      3385 8601 3415 8572
TIME...MOT...LOC 1856Z 231DEG 21KT 3385 8590

$$

10/ARM

1 follow-up statement

421 
WWUS54 KBMX 261913
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
213 PM CDT THU MAY 26 2011

ALC015-019-055-261945-
/O.CON.KBMX.SV.W.0233.000000T0000Z-110526T1945Z/
CALHOUN AL-CHEROKEE AL-ETOWAH AL-
213 PM CDT THU MAY 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
ETOWAH...SOUTH CENTRAL CHEROKEE AND NORTHEASTERN CALHOUN COUNTIES
UNTIL 245 PM CDT...

AT 213 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
NORTHWEST OF JACKSONVILLE...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  PIEDMONT...TENNALA...REAVES AND SPRING GARDEN.

TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.

LAT...LON 3379 8583 3390 8594 3415 8572 3395 8550
      3394 8553 3393 8553
TIME...MOT...LOC 1913Z 231DEG 21KT 3392 8578

$$

10/ARM

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 10:56 PM CDT	Special Weather Statement	BMX	Marion	49 min
May 25, 11:25 PM CDT	Special Weather Statement	BMX	Lamar	50 min
May 25, 11:35 PM CDT	Special Weather Statement	BMX	Winston	40 min
May 26, 12:18 AM CDT	Special Weather Statement	BMX	Fayette, Walker, Winston	42 min
May 26, 12:32 AM CDT	Severe Thunderstorm Warning	BMX	Winston	28 min
May 26, 12:50 AM CDT	Severe Thunderstorm Warning	BMX	Walker	14 min
May 26, 1:22 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Pickens	38 min
May 26, 2:10 AM CDT	Special Weather Statement	BMX	Fayette, Walker, Winston	50 min
May 26, 2:40 AM CDT	Special Weather Statement	BMX	Fayette	50 min
May 26, 2:49 AM CDT	Special Weather Statement	BMX	Jefferson, Tuscaloosa	41 min
May 26, 3:20 AM CDT	Special Weather Statement	BMX	Walker	40 min
May 26, 7:43 AM CDT	Special Weather Statement	BMX	Coosa	47 min
May 26, 7:48 AM CDT	Special Weather Statement	BMX	Marion	27 min
May 26, 8:41 AM CDT	Special Weather Statement	BMX	Calhoun, Cherokee	49 min
May 26, 12:21 PM CDT	Severe Thunderstorm Warning	BMX	Marengo	24 min
May 26, 1:07 PM CDT	Severe Thunderstorm Warning	BMX	Dallas	38 min
May 26, 1:14 PM CDT	Severe Thunderstorm Warning	BMX	Lowndes, Montgomery	46 min
May 26, 1:20 PM CDT	Special Weather Statement	BMX	Etowah, St. Clair	40 min
May 26, 1:27 PM CDT	Special Weather Statement	BMX	Cherokee	48 min
May 26, 1:32 PM CDT	Severe Thunderstorm Warning	BMX	Chilton	43 min
May 26, 1:35 PM CDT	Special Weather Statement	BMX	Jefferson	40 min
May 26, 1:37 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	23 min
May 26, 1:52 PM CDT	Severe Thunderstorm Warning	BMX	Elmore, Lowndes, Montgomery	38 min
May 26, 2:10 PM CDT	Severe Thunderstorm Warning	BMX	Bullock, Pike	33 min
May 26, 2:16 PM CDT	Areal Flood Advisory	BMX	Autauga, Elmore, Lowndes, Montgomery	119 min
May 26, 2:20 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Coosa, Elmore	40 min
May 26, 2:28 PM CDT	Severe Thunderstorm Warning	BMX	Bullock, Macon, Russell	32 min
May 26, 2:31 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Cleburne, Etowah	44 min
May 26, 2:47 PM CDT	Severe Thunderstorm Warning	BMX	Macon, Montgomery	13 min
May 26, 2:51 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Coosa, Talladega, Tallapoosa	24 min
May 26, 2:52 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Talladega	23 min
May 26, 2:57 PM CDT	Severe Thunderstorm Warning	BMX	Macon	18 min
May 26, 3:08 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair, Shelby	40 min
May 26, 3:15 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Cleburne, Etowah	45 min
May 26, 3:21 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Tallapoosa	24 min
May 26, 3:35 PM CDT	Severe Thunderstorm Warning	BMX	Chambers	25 min
May 26, 3:36 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, St. Clair	39 min
May 26, 3:40 PM CDT	Severe Thunderstorm Warning	BMX	Russell	35 min
May 26, 3:45 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, Walker	45 min
May 26, 3:51 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Pickens, Sumter	24 min
May 26, 3:53 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Pickens	26 min
May 26, 3:54 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Randolph	36 min
May 26, 4:08 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Etowah, St. Clair	52 min
May 26, 4:23 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	52 min
May 26, 4:51 PM CDT	Severe Thunderstorm Warning	BMX	Blount	24 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011 Every severe thunderstorm warning 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.