Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 182, NWS Birmingham, AL

July 1, 2012Sumter County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jul 1, 2012, 2:49 PM CDT for Sumter County, Alabama. It was in force for 41 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 1, 2012, 2:49 PM CDT (19:49 UTC)
Expired: Jul 1, 2012, 3:30 PM CDT
In force: 41 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County Sumter County, AL

The radar

The Columbus AFB radar (KGWX), 121 km from the middle of the area, began a volume at 19:52 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.

What was reported inside it

Time	Report	Where	Remark
Jul 1, 3:00 PM CDT	HAIL 1	Geiger, AL	QUARTER SIZED HAIL REPORTED IN GEIGER. CORRECTED FOR TIME.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.8 hours before the alert went out and 135 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: 3051 J/kg
Mixed-layer CIN: -170 J/kg
Mixed-layer LCL: 1312 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -51 m²/s²
0-3 km storm-relative helicity: 62 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

854 
WUUS54 KBMX 011949
SVRBMX
ALC119-012030-
/O.NEW.KBMX.SV.W.0182.120701T1949Z-120701T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
249 PM CDT SUN JUL 1 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN SUMTER COUNTY IN WEST CENTRAL ALABAMA...

* UNTIL 330 PM CDT

* AT 249 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 7 MILES
  SOUTHWEST OF PANOLA...OR 20 MILES NORTH OF LIVINGSTON...AND MOVING
  EAST AT 5 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PANOLA...GAINESVILLE...EPES...SUMTERVILLE AND WARSAW.

THIS INCLUDES...
INTERSTATE 20 EXIT NUMBERS 17 THROUGH 23...

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 3299 8834 3299 8817 3296 8816 3296 8818
      3293 8817 3292 8821 3286 8815 3283 8818
      3284 8814 3279 8810 3280 8807 3279 8806
      3278 8811 3271 8808 3270 8811 3268 8810
      3269 8804 3261 8807 3261 8821 3274 8838
TIME...MOT...LOC 1949Z 268DEG 6KT 3286 8831

$$

19

2 follow-up statements

347 
WWUS54 KBMX 012009
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
309 PM CDT SUN JUL 1 2012

ALC119-012030-
/O.CON.KBMX.SV.W.0182.000000T0000Z-120701T2030Z/
SUMTER AL-
309 PM CDT SUN JUL 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
SUMTER COUNTY UNTIL 330 PM CDT...

AT 309 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 5 MILES 
SOUTH OF PANOLA...OR 19 MILES SOUTHWEST OF ALICEVILLE...MOVING 
NORTHEAST AT 5 MPH.

LOCATIONS IMPACTED INCLUDE...
  PANOLA...GAINESVILLE...EPES...SUMTERVILLE AND WARSAW.

THIS INCLUDES...
INTERSTATE 20 EXIT NUMBER 23...

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

LAT...LON 3299 8834 3298 8817 3296 8816 3296 8819
      3293 8817 3293 8821 3286 8815 3283 8818
      3284 8814 3279 8810 3279 8806 3278 8811
      3271 8808 3269 8811 3269 8804 3265 8810
      3265 8821 3283 8836
TIME...MOT...LOC 2009Z 260DEG 6KT 3288 8828

$$

19

033 
WWUS54 KBMX 012028
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
328 PM CDT SUN JUL 1 2012

ALC119-012038-
/O.EXP.KBMX.SV.W.0182.000000T0000Z-120701T2030Z/
SUMTER AL-
328 PM CDT SUN JUL 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN SUMTER COUNTY WILL
EXPIRE AT 330 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

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

LAT...LON 3299 8834 3298 8817 3296 8816 3296 8819
      3293 8817 3293 8821 3286 8815 3283 8818
      3284 8814 3279 8810 3279 8806 3278 8811
      3271 8808 3269 8811 3269 8804 3265 8810
      3265 8821 3283 8836
TIME...MOT...LOC 2028Z 260DEG 6KT 3289 8824

$$

19

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 2:55 PM CDT	Special Weather Statement	BMX	Randolph	35 min
Jul 1, 3:02 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	43 min
Jul 1, 3:08 PM CDT	Special Weather Statement	BMX	Shelby	52 min
Jul 1, 3:12 PM CDT	Special Weather Statement	BMX	Greene	48 min
Jul 1, 3:27 PM CDT	Special Weather Statement	BMX	Randolph	48 min
Jul 1, 3:42 PM CDT	Heat Advisory	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	23 hr
Jul 1, 3:42 PM CDT	Special Weather Statement	BMX	Fayette	48 min
Jul 1, 3:44 PM CDT	Severe Thunderstorm Warning	BMX	Chambers	46 min
Jul 1, 3:53 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Cleburne, Randolph	37 min
Jul 1, 3:58 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale	28 min
Jul 1, 4:02 PM CDT	Special Weather Statement	BMX	Marengo	28 min
Jul 1, 4:05 PM CDT	Special Weather Statement	BMX	Tuscaloosa	40 min
Jul 1, 4:09 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Tuscaloosa, Walker	51 min
Jul 1, 4:11 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton	34 min
Jul 1, 4:14 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	35 min
Jul 1, 4:19 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Clay, Randolph, Tallapoosa	41 min
Jul 1, 4:22 PM CDT	Special Weather Statement	BMX	Clay	38 min
Jul 1, 4:38 PM CDT	Special Weather Statement	BMX	Dallas	52 min
Jul 1, 4:41 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun	49 min
Jul 1, 4:43 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton	27 min
Jul 1, 4:45 PM CDT	Severe Thunderstorm Warning	BMX	Chambers	45 min
Jul 1, 4:56 PM CDT	Special Weather Statement	BMX	Walker	49 min
Jul 1, 4:57 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Etowah	48 min
Jul 1, 5:06 PM CDT	Special Weather Statement	BMX	Blount	39 min
Jul 1, 5:12 PM CDT	Special Weather Statement	BMX	Clay	48 min
Jul 1, 5:16 PM CDT	Severe Thunderstorm Warning	BMX	Winston	44 min
Jul 1, 5:17 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson	43 min
Jul 1, 5:30 PM CDT	Special Weather Statement	BMX	Calhoun	45 min
Jul 1, 5:41 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair	34 min
Jul 1, 5:43 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	20 min
Jul 1, 5:45 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee	30 min
Jul 1, 5:46 PM CDT	Special Weather Statement	BMX	Chilton	44 min
Jul 1, 5:51 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	39 min
Jul 1, 6:03 PM CDT	Areal Flood Advisory	BMX	Calhoun, Cherokee	117 min
Jul 1, 6:06 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun	24 min
Jul 1, 6:16 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee, Etowah	44 min
Jul 1, 6:26 PM CDT	Areal Flood Advisory	BMX	Calhoun	2 hr
Jul 1, 6:27 PM CDT	Flash Flood Warning	BMX	Calhoun, Cherokee	3 hr
Jul 1, 6:34 PM CDT	Special Weather Statement	BMX	Calhoun	41 min
Jul 1, 6:46 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Etowah	44 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.