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Archive for December 20th, 2012

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.

Storms Not Quite as Intense in North Central Alabama

| 7:56 am December 20, 2012

The National Weather Service is going with significant weather alerts for now, instead of severe thunderstorm warnings ahead of our line of intense showers.

There was a burst of reports of trees down around Columbus MS, prompting the earlier warnings.

There could still be scattered tree and power line damage from the line, which will produce wind gusts between 40-50 mph as it heads east.

Here is the radar at 7:50:

2012-12-20_07-46-37

The best chances for severe weather will be south of a line from Linden to Montgomery to Phenix City. There could be several severe thunderstorm warnings, as well as a few tornado warnings down there.

North of that line, there are still strong winds aloft, but little or no instability, no widespread problems are not anticipated. Just keep your favorite source of warning information on alert and close at hand and keep in touch with the AlabamaWX blog!

Severe Thunderstorm Warning for Greene, Pickens, Sumter till 8:00 AM CST

| 7:03 am December 20, 2012

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Widespread winds of 50-60 mph, with some 70 mph winds, will impact the warned counties over the next hour, causing scattered tree and power line damage.

2012-12-20_07-07-32

WUUS54 KBMX 201303
SVRBMX
ALC063-107-119-201400-
/O.NEW.KBMX.SV.W.0299.121220T1303Z-121220T1400Z/

BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
703 AM CST THU DEC 20 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
GREENE COUNTY IN WEST CENTRAL ALABAMA…
PICKENS COUNTY IN WEST CENTRAL ALABAMA…
NORTHERN SUMTER COUNTY IN WEST CENTRAL ALABAMA…

* UNTIL 800 AM CST

* AT 700 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 8
MILES WEST OF MILLPORT TO 12 MILES NORTHWEST OF PANOLA…AND MOVING
EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE…
PICKENSVILLE…ALICEVILLE…CARROLLTON…REFORM…GORDO…EUTAW…
ETHELSVILLE AND BEVILL LOCK AND DAM.

THIS INCLUDES…
INTERSTATE 20 EXIT NUMBERS 23 THROUGH 45…