Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 29, NWS Birmingham, AL

March 2, 2012Lamar County, Marion County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 2, 2012, 3:38 PM CST for Lamar County, Marion County, Alabama. It was in force for 52 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: Mar 2, 2012, 3:38 PM CST (21:38 UTC)
Expired: Mar 2, 2012, 4:30 PM CST
In force: 52 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Lamar County, AL, Marion County, AL

The radar

The Columbus AFB radar (KGWX), 36 km from the middle of the area, began a volume at 21:39 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
Mar 2, 3:45 PM CST	HAIL 0.88	Detroit, AL

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
Mar 2, 1:20 PM CST	Tornado Watch	SPC	9 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 9.6 hours before the alert went out and 154 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: 544 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 530 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 180 m²/s²
0-3 km storm-relative helicity: 204 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

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

557 
WUUS54 KBMX 022138
SVRBMX
ALC075-093-022230-
/O.NEW.KBMX.SV.W.0029.120302T2138Z-120302T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
338 PM CST FRI MAR 2 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

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

* UNTIL 430 PM CST

* AT 334 PM CST...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
  SOUTHEAST OF SMITHVILLE...OR 8 MILES EAST OF AMORY...AND MOVING
  EAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HAMILTON...DETROIT...WESTON...BRILLIANT...BRINN...LAKE
  BUTTAHATCHEE...BYRD AND HENSON SPRINGS.

THIS INCLUDES...
US 78 EXIT NUMBERS 7 THROUGH 30...

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 3417 8820 3430 8763 3400 8764 3395 8822
      3400 8822
TIME...MOT...LOC 2138Z 257DEG 44KT 3401 8828

$$

61

2 follow-up statements

765 
WWUS54 KBMX 022202
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
402 PM CST FRI MAR 2 2012

ALC075-093-022230-
/O.CON.KBMX.SV.W.0029.000000T0000Z-120302T2230Z/
LAMAR AL-MARION AL-
402 PM CST FRI MAR 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL MARION
AND NORTHEASTERN LAMAR COUNTIES UNTIL 430 PM CST...

AT 358 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
NORTHEAST OF DETROIT...OR 8 MILES SOUTHWEST OF HAMILTON...MOVING EAST
AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  HAMILTON...BRILLIANT...BRINN...LAKE BUTTAHATCHEE...RANKIN FITE
  AIRPORT...PIKEVILLE...PEA RIDGE...PEARCES MILL AND PINEY GROVE.

THIS INCLUDES...
US 78 EXIT NUMBERS 11 THROUGH 26...

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 3410 8813 3416 8805 3426 8763 3400 8764
      3401 8811
TIME...MOT...LOC 2203Z 256DEG 35KT 3407 8802

$$

61

117 
WWUS54 KBMX 022215
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
415 PM CST FRI MAR 2 2012

ALC075-022225-
/O.CAN.KBMX.SV.W.0029.000000T0000Z-120302T2230Z/
LAMAR AL-
415 PM CST FRI MAR 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LAMAR COUNTY IS
CANCELLED...

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

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

LAT...LON 3425 8763 3405 8764 3406 8790 3408 8792
      3416 8791 3426 8764
TIME...MOT...LOC 2215Z 255DEG 42KT 3410 8785

$$

ALC093-022230-
/O.CON.KBMX.SV.W.0029.000000T0000Z-120302T2230Z/
MARION AL-
415 PM CST FRI MAR 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
MARION COUNTY UNTIL 430 PM CST...

AT 413 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES
SOUTHWEST OF BRINN...OR 7 MILES SOUTHEAST OF HAMILTON...MOVING EAST
AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  BRINN...LAKE BUTTAHATCHEE...PEARCES MILL AND PINEY GROVE.

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 3425 8763 3405 8764 3406 8790 3408 8792
      3416 8791 3426 8764
TIME...MOT...LOC 2215Z 255DEG 42KT 3410 8785

$$

61

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 2, 4:53 AM CST	Wind Advisory	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	13 hr
Mar 2, 2:46 PM CST	Severe Thunderstorm Warning	BMX	Marion	44 min
Mar 2, 2:59 PM CST	Severe Thunderstorm Warning	BMX	Lamar, Pickens	46 min
Mar 2, 3:26 PM CST	Severe Thunderstorm Warning	BMX	Fayette, Pickens, Tuscaloosa	49 min
Mar 2, 3:47 PM CST	Severe Thunderstorm Warning	BMX	Winston	43 min
Mar 2, 4:05 PM CST	Severe Thunderstorm Warning	BMX	Fayette, Jefferson, Tuscaloosa, Walker	40 min
Mar 2, 4:16 PM CST	Severe Thunderstorm Warning	BMX	Walker	44 min
Mar 2, 4:23 PM CST	Severe Thunderstorm Warning	BMX	Marion, Winston	31 min
Mar 2, 4:39 PM CST	Severe Thunderstorm Warning	BMX	Jefferson, Walker	53 min
Mar 2, 4:46 PM CST	Severe Thunderstorm Warning	BMX	Blount	48 min
Mar 2, 4:53 PM CST	Severe Thunderstorm Warning	BMX	Marengo	52 min
Mar 2, 5:16 PM CST	Severe Thunderstorm Warning	BMX	Blount, Jefferson, St. Clair	44 min
Mar 2, 5:43 PM CST	Tornado Warning	BMX	Lowndes	47 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.