Alert archive / Alabama / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 21, NWS Birmingham, AL

March 9, 2006Shelby County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 9, 2006, 5:45 PM CST for Shelby County, Alabama. It was in force for 46 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 9, 2006, 5:45 PM CST (23:45 UTC)
Expired: Mar 9, 2006, 6:31 PM CST
In force: 46 min
Issued by: NWS Birmingham, AL
Area: Counties, with a storm outline in the text

County Shelby County, AL

The radar

The Birmingham radar (KBMX), 10 km from the middle of the area, began a volume at 23:45 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 9, 6:01 PM CST	TSTM WND DMG	Alabaster, AL	A FEW TREES AND POWER LINES WERE BLOWN DOWN IN WESTERN SHELBY COUNTY.

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 9, 2:40 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 11.8 hours before the alert went out and 10 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 564 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 297 m²/s²
0-3 km storm-relative helicity: 314 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.

000 
WUUS54 KBMX 092345
SVRBMX
ALC117-100045-
/O.NEW.KBMX.SV.W.0021.060309T2345Z-060310T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
545 PM CST THU MAR 9 2006

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SHELBY COUNTY IN CENTRAL ALABAMA
  THIS INCLUDES THE AREAS OF...PELHAM...OAK MOUNTAIN STATE PARK...
  MONTEVALLO...HELENA...COLUMBIANA...ALABASTER

* UNTIL 645 PM CST

* AT 545 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED ALONG A
  LINE EXTENDING FROM 14 MILES NORTHWEST OF HELENA TO 30 MILES WEST
  OF MONTEVALLO...OR ALONG A LINE EXTENDING FROM HUEYTOWN TO 10 MILES
  WEST OF BRENT...AND MOVING EAST AT 45 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  HELENA BY 610 PM CST
  PELHAM AND ALABASTER BY 615 PM CST
  OAK MOUNTAIN STATE PARK AND MONTEVALLO BY 620 PM CST
  CALERA BY 625 PM CST
  VANDIVER AND CHELSEA BY 630 PM CST
  COLUMBIANA BY 635 PM CST

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

LAT...LON 3323 8701 3308 8688 3310 8653 3335 8638
      3354 8651

$$

ML/75

2 follow-up statements

000 
WWUS54 KBMX 100002
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
601 PM CST THU MAR 9 2006

ALC117-100045-
/O.CON.KBMX.SV.W.0021.000000T0000Z-060310T0045Z/
SHELBY AL-
601 PM CST THU MAR 9 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CST
FOR SHELBY COUNTY...

AT 600 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DESTRUCTIVE WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM 9 MILES WEST OF INVERNESS TO 15 MILES
WEST OF MONTEVALLO...OR ALONG A LINE EXTENDING FROM HOOVER TO 10
MILES NORTHEAST OF BRENT...MOVING EAST AT 50 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HELENA...PELHAM...ALABASTER...OAK MOUNTAIN STATE PARK...SHELBY CO
AIRPORT...CHELSEA...VANDIVER...CALERA...WILSONVILLE...VINCENT...
HARPERSVILLE AND COLUMBIANA.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE 
IMMEDIATELY FOR DAMAGING WINDS AND DEADLY CLOUD TO GROUND LIGHTNING. 
PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG 
BUILDING BUT AWAY FROM WINDOWS.

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. THIS STORM HAS THE POTENTIAL TO CAUSE SERIOUS
INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CST
THURSDAY EVENING FOR WESTERN ALABAMA.

LAT...LON 3323 8701 3308 8688 3310 8653 3335 8638
      3354 8651

$$

KNS/99

000 
WWUS54 KBMX 100031
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
631 PM CST THU MAR 9 2006

ALC117-100041-
/O.CAN.KBMX.SV.W.0021.000000T0000Z-060310T0045Z/
SHELBY AL-
631 PM CST THU MAR 9 2006

...THE SEVERE THUNDERSTORM WARNING FOR SHELBY COUNTY IS CANCELLED...

AT 631 PM CST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO
LONGER SEVERE...THUS THE WARNING HAS BEEN CANCELLED.

LAT...LON 3323 8701 3308 8688 3310 8653 3335 8638
      3354 8651

$$

KNS/99

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 9, 3:13 PM CST	Severe Thunderstorm Warning	BMX	Lamar, Marion, Pickens	62 min
Mar 9, 3:28 PM CST	Severe Thunderstorm Warning	BMX	Fayette	62 min
Mar 9, 3:50 PM CST	Severe Thunderstorm Warning	BMX	Sumter	55 min
Mar 9, 3:56 PM CST	Severe Thunderstorm Warning	BMX	Walker, Winston	64 min
Mar 9, 4:03 PM CST	Severe Thunderstorm Warning	BMX	Tuscaloosa	57 min
Mar 9, 4:06 PM CST	Tornado Warning	BMX	Marion	16 min
Mar 9, 4:11 PM CST	Severe Thunderstorm Warning	BMX	Pickens	46 min
Mar 9, 4:24 PM CST	Severe Thunderstorm Warning	BMX	Greene	66 min
Mar 9, 4:24 PM CST	Severe Thunderstorm Warning	BMX	Fayette	21 min
Mar 9, 5:06 PM CST	Severe Thunderstorm Warning	BMX	Hale	39 min
Mar 9, 5:19 PM CST	Severe Thunderstorm Warning	BMX	Tuscaloosa	26 min
Mar 9, 5:38 PM CST	Severe Thunderstorm Warning	BMX	Bibb	52 min
Mar 9, 5:38 PM CST	Severe Thunderstorm Warning	BMX	Jefferson	52 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2006 Every severe thunderstorm warning in 2006

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.