Alabama 811 | Know What's Below.

Archive for December 22nd, 2011

A Good Rain Event

A Good Rain Event

| December 22, 2011 @ 9:35 pm

Avery active day of weather across Alabama today with numerous showers and thunderstorms as bands of showers and storms marched through the state, We had a Tornado Watch and a Flash Flood Watch. But for this post, lets zero in on the very beneficial rain amounts. Interesting to note that today’s rain pushed the Birmingham […]

Read More

Damage Reports

Damage Reports

| December 22, 2011 @ 3:40 pm

An active severe weather day across Alabama thanks to a vigorous low pressure system moving along a sharp boundary. Fortunately, no significant damage was reported. I don’t think that there have been any tornado reports either. 000 NWUS54 KBMX 222128 LSRBMX PRELIMINARY LOCAL STORM REPORT…SUMMARY NATIONAL WEATHER SERVICE BIRMINGHAM AL 328 PM CST THU DEC […]

Read More

Watch Trimmed Down

Watch Trimmed Down

| December 22, 2011 @ 3:12 pm

Look at the moisture gradient across Alabama ahead of and behind our cold front. The front is east of Birmingham now. The temperature at BHM dropped from 67F to 60F in one hour. The dewpoint dropped to 59F from 65F. There is no severe weather threat behind the front. The tornado watch does continue for […]

Read More

Tornado Warning Canceled, Severe Threat Pushing East

Tornado Warning Canceled, Severe Threat Pushing East

| December 22, 2011 @ 2:58 pm

The tornado warning for Coosa, Clay and Tallapoosa Counties has been canceled. The storm weakened as it passed between Kellyton and Alex City. The severe weather threat continues south of I-20 and east of a line from Talladega to Prattville.

Read More

Severe weather analysis – 242 pm

Severe weather analysis – 242 pm

| December 22, 2011 @ 2:42 pm

It’s still clear where the front is from the strong temperature and dewpoint gradient in the analysis above…now from near Selma to Montevallo to Weiss Lake.  Research has shown that on the near and just south of a front like this, atmospheric shear is enhanced.  This explains the tornado warnings and rotating storms generally concentrated […]

Read More

Tornado Warning : Restructured – Clay, Coosa, Tallapoosa Counties 3:15

Tornado Warning : Restructured – Clay, Coosa, Tallapoosa Counties 3:15

| December 22, 2011 @ 2:41 pm

This is a restructuring of the tornado warning for the significant storm in Coosa County. Still strong indications of tornado just southeast of Rockford moving toward Kellyton, Alex City, Goldville, New Site and Daviston. It will move in the direction of Wedowee. This storm is in the best area of instability and shear. It could […]

Read More

Alexander City Should Be Especially Alert

Alexander City Should Be Especially Alert

| December 22, 2011 @ 2:40 pm

Dangerous circulation indicated on radar showing possible tornado approaching Alexander City in Tallapoosa County. It will arrive there around 2:48 or so. Be in safe shelter as this dangerous storm approaches. The time for action is NOW! You are in a TORNADO WARNING! GET UNDERGROUND and GET UNDER A TABLE. Seek shelter under a sturdy […]

Read More

Coosa County Storm Looks Very Dangerous

Coosa County Storm Looks Very Dangerous

| December 22, 2011 @ 2:28 pm

Tornado warning continues for COosa, Tallpoosa and Elmore Counties. Possible tornado is cross US-231 south of Rockford on the Coosa/Elmore COunty line. Moving northeast is the general direction of Alex City and Jacksons Gap. Be in safe shelter if you are in the path of this storm.

Read More

Erroneous Shelby County Report

Erroneous Shelby County Report

| December 22, 2011 @ 2:17 pm

A tornado report was attributed to the Shelby County EMA but they report they DID NOT issue a report of a tornado at Columbiana. It came in through 911 and there was some confusion. Tornado warning does continue for extreme southern St. Clair and Talledega Counties. Shelby County has been trimmed. Possible tornado indicated between […]

Read More

Tornado Warning : Autauga, Coosa, Elmore, Tallapoosa Counties 2:45

Tornado Warning : Autauga, Coosa, Elmore, Tallapoosa Counties 2:45

| December 22, 2011 @ 1:58 pm

Radar indicates tornado between Billingsley and Pratville. About to cross I-65. Will pass near or just north of Deatsville. It will pass over southeastern Coosa County south of Rockford. Be in safe shelter as this circulation approaches you. In addition to potentially producing a tornado, it has a high liklihood of producing damaging winds. THE […]

Read More

Tornado Warning : St. Clair, Shelby, and Talladega Counties until 2:45

Tornado Warning : St. Clair, Shelby, and Talladega Counties until 2:45

| December 22, 2011 @ 1:53 pm

The circulation in Shelby County has intensified again. It is approaching Wilsonville and Childersburg. The signature is rather weak on radar, but it could indicate small tornado or damaging winds. A new warning just issued for Coosa and other Counties. THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * TORNADO WARNING FOR… SOUTH CENTRAL […]

Read More

Tornado Warning Expires, New Severe Tstm Warning Issued

Tornado Warning Expires, New Severe Tstm Warning Issued

| December 22, 2011 @ 1:49 pm

The NWS has opted to go severe thunderstorm warning for Shelby and Talladega Counties. Strongest storm with potential to produce damaging winds is between Calera and Chelsea moving northeast toward Columbiana, Wilsonville, Harpersville, Vincent, Childersburg and Winterboro. Still no reports of damage yet. THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * SEVERE THUNDERSTORM […]

Read More

Severe weather analysis – 146 pm

Severe weather analysis – 146 pm

| December 22, 2011 @ 1:46 pm

It’s pretty clear from the strong temperature and dewpoint gradient in the analysis above where the front is…from near Demopolis to BHM area to Gadsden.  Research has shown that on the near and just south of a front like this, atmospheric shear is enhanced.  This explains the tornado warnings and rotating storms generally concentrated from […]

Read More

Damaging Winds/Tornado Possible Bibb. Chilton and Shelby

Damaging Winds/Tornado Possible Bibb. Chilton and Shelby

| December 22, 2011 @ 1:32 pm

The tornado warning continues for Bibb, Chilton and Shelby Counties until 1:45 p.m. If you are in the warnings, please be in safe shelter. The circulations over Shelby County have weakened but there is still a threat of a tornado, especially northeast of Montevallo. This storm will move in the general direction of Calera and […]

Read More