Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 67, NWS Birmingham, AL

March 16, 2012Randolph County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 16, 2012, 2:17 PM CDT for Randolph County, Alabama. It was in force for 26 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 16, 2012, 2:17 PM CDT (19:17 UTC)
Expired: Mar 16, 2012, 2:43 PM CDT
In force: 26 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County Randolph County, AL

The radar

The Atlanta radar (KFFC), 76 km from the middle of the area, began a volume at 19:17 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 16, 2:22 PM CDT	HAIL 1.75	6 Nnw Wedowee, AL	GOLF BALL SIZED HAIL REPORTED JUST NORTH OF THE LAKESIDE MARINA AT LAKE WEDOWEE ON HIGHWAY 431.

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

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.3 hours before the alert went out and 82 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: 123 J/kg
Mixed-layer CIN: -175 J/kg
Mixed-layer LCL: 1234 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

508 
WUUS54 KBMX 161917
SVRBMX
ALC111-162000-
/O.NEW.KBMX.SV.W.0067.120316T1917Z-120316T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
217 PM CDT FRI MAR 16 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL RANDOLPH COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 300 PM CDT

* AT 213 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 NEAR MORRISON   
  CROSS ROADS...OR JUST NORTH OF WEDOWEE...AND MOVING EAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NEWELL...NAPOLEON AND GRAHAM.

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 3332 8527 3331 8555 3344 8555 3346 8529
TIME...MOT...LOC 1917Z 269DEG 12KT 3337 8549

$$

56

2 follow-up statements

410 
WWUS54 KBMX 161936
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
236 PM CDT FRI MAR 16 2012

ALC111-162000-
/O.CON.KBMX.SV.W.0067.000000T0000Z-120316T2000Z/
RANDOLPH AL-
236 PM CDT FRI MAR 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
RANDOLPH COUNTY UNTIL 300 PM CDT...

AT 230 PM CDT...EMERGENCY MANAGEMENT REPORTED A SEVERE THUNDERSTORM 
PRODUCING GOLF BALL SIZE HAIL NEAR THE LAKESIDE MARINA. THIS STORM 
WAS LOCATED 5 MILES SOUTHEAST OF MORRISON CROSS ROADS...OR 5 MILES 
NORTHEAST OF WEDOWEE...MOVING EAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  NEWELL...NAPOLEON AND GRAHAM.

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

LAT...LON 3332 8550 3344 8549 3346 8529 3332 8527
TIME...MOT...LOC 1935Z 269DEG 12KT 3337 8542

$$

56

855 
WWUS54 KBMX 161943
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
243 PM CDT FRI MAR 16 2012

ALC111-161953-
/O.CAN.KBMX.SV.W.0067.000000T0000Z-120316T2000Z/
RANDOLPH AL-
243 PM CDT FRI MAR 16 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL RANDOLPH COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

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

LAT...LON 3332 8550 3344 8549 3346 8529 3332 8527
TIME...MOT...LOC 1943Z 269DEG 12KT 3337 8539

$$

56

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 15, 9:18 PM CDT	Special Weather Statement	BMX	Marion	27 min
Mar 15, 9:25 PM CDT	Special Weather Statement	BMX	DeKalb	50 min
Mar 15, 10:40 PM CDT	Special Weather Statement	BMX	Walker	50 min
Mar 16, 12:54 PM CDT	Special Weather Statement	BMX	Marion	36 min
Mar 16, 1:02 PM CDT	Special Weather Statement	BMX	Calhoun, Cherokee, Etowah	43 min
Mar 16, 1:13 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee, Etowah	29 min
Mar 16, 1:27 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	15 min
Mar 16, 2:52 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	38 min
Mar 16, 3:01 PM CDT	Special Weather Statement	BMX	Winston	44 min
Mar 16, 3:04 PM CDT	Severe Thunderstorm Warning	BMX	Winston	26 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.