Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 5, NWS Birmingham, AL

January 23, 2012Marion County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jan 23, 2012, 12:22 AM CST for Marion County, Alabama. It was in force for 23 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: Jan 23, 2012, 12:22 AM CST (06:22 UTC)
Expired: Jan 23, 2012, 12:45 AM CST
In force: 23 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County Marion County, AL

The radar

The Columbus AFB radar (KGWX), 62 km from the middle of the area, began a volume at 06:24 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
Jan 23, 12:34 AM CST	TSTM WND DMG	1 Nw Bear Creek, AL	TREE KNOCKED DOWN ON HWY 172 NEAR BEAR CREEK BRIDGE.

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Jan 22, 10:59 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 6.4 hours before the alert went out and 155 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: 223 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 453 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 267 m²/s²
0-3 km storm-relative helicity: 298 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

564 
WUUS54 KBMX 230622
SVRBMX
ALC093-230645-
/O.NEW.KBMX.SV.W.0005.120123T0622Z-120123T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1222 AM CST MON JAN 23 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN MARION COUNTY IN NORTHWEST ALABAMA...

* UNTIL 1245 AM CST

* AT 1218 AM CST...THE NATIONAL WEATHER SERVICE INDICATED A LINE OF
  SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 5
  MILES NORTHWEST OF HACKLEBURG TO WESTON...AND MOVING NORTHEAST AT
  50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HAMILTON...HACKLEBURG...BRINN...TESSNER AND BEAR CREEK.

THIS INCLUDES...
US 78 EXIT NUMBERS 7 THROUGH 11...

WINDS OF 60 TO 70 MPH WILL BREAK LARGE TREE LIMBS AND CAUSE SOME
DAMAGE...ESPECIALLY TO SMALLER STRUCTURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM CST MONDAY MORNING FOR
NORTHWESTERN ALABAMA.

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

LAT...LON 3431 8787 3432 8768 3431 8763 3418 8764
      3408 8815 3432 8792 3432 8788
TIME...MOT...LOC 0622Z 235DEG 44KT 3437 8783 3414 8802

$$

17/KLAWS

1 follow-up statement

935 
WWUS54 KBMX 230633
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1233 AM CST MON JAN 23 2012

ALC093-230645-
/O.CON.KBMX.SV.W.0005.000000T0000Z-120123T0645Z/
MARION AL-
1233 AM CST MON JAN 23 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
MARION COUNTY UNTIL 1245 AM CST...

AT 1230 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN 
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING 
FROM 8 MILES NORTHEAST OF HACKLEBURG TO HAMILTON...MOVING NORTHEAST 
AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  BRINN...TESSNER AND BEAR CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

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

LAT...LON 3431 8787 3432 8768 3431 8763 3418 8764
      3414 8799 3432 8790 3432 8788
TIME...MOT...LOC 0633Z 246DEG 41KT 3436 8769 3420 8788

$$

17!

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 23, 1:19 AM CST	Severe Thunderstorm Warning	BMX	Marion	41 min
Jan 23, 1:56 AM CST	Severe Thunderstorm Warning	BMX	Pickens, Tuscaloosa	49 min
Jan 23, 2:09 AM CST	Tornado Warning	BMX	Pickens	36 min
Jan 23, 2:23 AM CST	Tornado Warning	BMX	Greene, Sumter	52 min
Jan 23, 2:31 AM CST	Tornado Warning	BMX	Tuscaloosa	44 min
Jan 23, 3:02 AM CST	Tornado Warning	BMX	Jefferson, Tuscaloosa, Walker	43 min
Jan 23, 3:04 AM CST	Tornado Warning	BMX	Greene, Sumter	41 min
Jan 23, 3:32 AM CST	Tornado Warning	BMX	Blount, Jefferson, St. Clair	58 min
Jan 23, 3:33 AM CST	Tornado Warning	BMX	Bibb, Greene, Hale, Perry	42 min
Jan 23, 3:50 AM CST	Areal Flood Advisory	BMX	Jefferson, Tuscaloosa, Walker	115 min
Jan 23, 4:15 AM CST	Tornado Warning Emergency	BMX	Blount, Calhoun, Etowah, Jefferson, St. Clair	60 min
Jan 23, 4:27 AM CST	Tornado Warning	BMX	Bibb, Chilton, Dallas, Hale, Perry	48 min
Jan 23, 5:11 AM CST	Tornado Warning Emergency	BMX	Chilton, Coosa	34 min
Jan 23, 5:24 AM CST	Tornado Warning	BMX	Clay, Shelby, Talladega	26 min
Jan 23, 5:37 AM CST	Tornado Warning	BMX	Chilton, Coosa, Talladega	38 min
Jan 23, 6:01 AM CST	Tornado Warning	BMX	Clay, Coosa, Tallapoosa	44 min
Jan 23, 6:22 AM CST	Areal Flood Advisory	BMX	Chilton, Coosa	3 hr
Jan 23, 6:34 AM CST	Areal Flood Advisory	BMX	Dallas, Perry	116 min
Jan 23, 6:36 AM CST	Tornado Warning	BMX	Autauga, Chilton, Coosa, Elmore	39 min
Jan 23, 7:12 AM CST	Severe Thunderstorm Warning	BMX	Coosa, Elmore, Tallapoosa	48 min
Jan 23, 7:15 AM CST	Tornado Warning	BMX	Chambers, Randolph, Tallapoosa	17 min
Jan 23, 7:24 AM CST	Areal Flood Advisory	BMX	Talladega	111 min
Jan 23, 7:32 AM CST	Areal Flood Advisory	BMX	Chambers, Clay, Randolph, Tallapoosa	3 hr
Jan 23, 7:42 AM CST	Tornado Warning	BMX	Chambers, Tallapoosa	33 min
Jan 23, 8:09 AM CST	Severe Thunderstorm Warning	BMX	Elmore, Tallapoosa	36 min
Jan 23, 8:14 AM CST	Areal Flood Advisory	BMX	Autauga, Dallas, Lowndes	3 hr
Jan 23, 8:20 AM CST	Severe Thunderstorm Warning	BMX	Lowndes, Montgomery	25 min
Jan 23, 8:34 AM CST	Severe Thunderstorm Warning	BMX	Elmore, Lee, Macon, Tallapoosa	41 min
Jan 23, 8:38 AM CST	Flash Flood Warning	BMX	Chambers, Randolph	4 hr
Jan 23, 8:44 AM CST	Severe Thunderstorm Warning	BMX	Montgomery	31 min
Jan 23, 8:45 AM CST	Areal Flood Advisory	BMX	Chambers, Lee, Macon, Tallapoosa	3 hr
Jan 23, 9:09 AM CST	Severe Thunderstorm Warning	BMX	Bullock, Elmore, Macon, Montgomery	36 min
Jan 23, 9:12 AM CST	Severe Thunderstorm Warning	BMX	Lowndes, Montgomery	48 min
Jan 23, 9:19 AM CST	Severe Thunderstorm Warning	BMX	Lee, Macon, Russell	41 min
Jan 23, 10:20 AM CST	Areal Flood Warning	BMX	Clay, Tallapoosa	4 hr
Jan 23, 10:32 AM CST	Severe Thunderstorm Warning	BMX	Lee, Russell	28 min
Jan 23, 12:12 PM CST	River Flood Warning	BMX	Chambers, Elmore, Macon, Randolph, Tallapoosa	2 hr

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.