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Archive for December 20th, 2012

51 mph Gust at Airport

| 9:24 am December 20, 2012

Winds gusted to 51 mph at the Birmingham Airport as out line of intense showers passed at 9:15.

Here is the METAR report from the ASOS equipment:
KBHM 201519Z 27027G44KT 1/2SM +RA FG SQ SCT009 BKN014 OVC021 13/12 A2979 RMK AO2 PK WND 28044/1515 WSHFT 1505 RAB02 PRESRR

More Watch Changes

| 8:53 am December 20, 2012

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The Tornado Watch for Greene, Hale and Tuscaloosa Counties has been canceled.

Calhoun, Clay, Cleburne, Randolph and Talladega Counties have been added to the Tornado Watch till 12:00 PM CST.

Here is the watch footprint now (shown in the county outlines):

2012-12-20_09-06-49

From the NWS: We’ve extended the watch northward on the eastern side. Big dewpoint/moisture surge (63 dewpoint here), and we’re a bit concerned about a little bit of daytime heating causing some better instabilities downstream from the ongoing line after it gets through BHM.

The Tornado Watch continues for Autauga, Barbour, Bibb, Bullock, Chambers, Chilton, Coosa, Dallas, Elmore, Lee, Lowndes, Macon, Marengo, Montgomery, Perry, Pike, Russell and Tallapoosa Counties till 12:00 PM CST.



Tuscaloosa Reports/Birmingham Timing

| 8:37 am December 20, 2012

Winds did gust to 56 mph at our SkyCam in Tuscaloosa as the line went through there around 8:15.

Winds to 50 mph were estimated on the UA Campus.

There was a report of a possible funnel cloud on Twitter in Northport. It could have been scud clouds, or it could have been a small spin up gustnado. With the strong winds swirling today, you may see all kinds of fast moving clouds.

No damage was reported.

2012-12-20_08-35-14

The line of showers is over western Jefferson County. It will reach downtown Birmingham around 9 a.m. It will reach western Shelby County shortly before 9 a.m. as well, and I-65 around 9:15. Be prepared for strong gusty winds.

Further south, Severe Thunderstorm Warning continues for Autauga and Dallas Counties till 8:45 AM CST. Dangerous looking storm passing just north of Selma, lifting into Autauga County.

Severe Thunderstorm Warning : Autauga/Dallas til 8:45 AM

| 8:21 am December 20, 2012

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12-20-2012 8-23-50 AM

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
WEST CENTRAL AUTAUGA COUNTY IN ALABAMA…
NORTHERN DALLAS COUNTY IN SOUTH CENTRAL ALABAMA…

* UNTIL 845 AM CST

* AT 816 AM CST…THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THIS STORM WAS LOCATED NEAR OLD CAHABA PARK…OR 9 MILES
SOUTHWEST OF SELMA…AND MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE…
SELMONT-WEST SELMONT…SELMA…VALLEY GRANDE…DALLAS COUNTY HORSE
ARENA…POTTER STATION…MEMORIAL STADIUM…BURNSVILLE AND PAUL M
GRIST STATE PARK.

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

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.

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

INTENSE SQUALL LINES CAN OCCASIONALLY PRODUCE BRIEF TORNADOES IN
ADDITION TO WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT
IMMEDIATELY LIKELY…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.



Doing the Tornado Watch Watusi

| 8:19 am December 20, 2012

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The National Weather Service is Birmingham is reconfiguring the tornado watch.

They have canceled Pickens and Sumter out of it.

It continues for Autauga, Bibb, Chilton, Coosa, Dallas, Elmore, Greene, Hale, Lowndes, Marengo, Montgomery, Perry, Tallapoosa and Tuscaloosa till 12:00 PM CST.

They have extended it eastward to include Barbour, Bullock, Chambers, Lee, Macon, Pike and Russell Counties till 12:00 PM CST.