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Archive for January 13th, 2013

Heavy Rain in Areas

| 7:24 pm January 13, 2013

Heavy rain continues to fall across many portions of Central Alabama this evening. The heaviest activity is lined up along Interstate 59 from De Kalb County through Gadsden, Birmingham, Tuscaloosa to about Meridian. The activity will continue to push east, but will begin to slow as the frontal system slows down. We should expect rain for several day as the cold front gets into the state making for some raw days ahead. In Central Alabama, Cullman County remains under a Flash Flood Warning until 11:30 PM. Numerous other area are under areal flood advisories, which have been issued as the heavy rainfall causes increased runoff for drainage systems and is causing some flooding through out certain areas. Make sure if you are out and about this evening and overnight that you slow it down a little bit as roads have significant water ponding on them. Remember if you encounter a flooded roadway, TURN AROUND, DON”T DROWN.

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Some Flooding Reports

| 6:08 pm January 13, 2013

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Rainfall amounts according to Doppler Radar estimates are between 1 and 2 inches over a fairly wide area along and north of the I-59 corridor. You can see those in the right panel of the graphic in the areas in yellow and red. The left panel is the current radar reflectivity showing the areas of heaviest rainfall now.

John Talbot is reporting 1.02 inches as of 5:57 p.m. at his location between Concord and Hueytown.

The Birmingham Airport has picked up 0.65 inches as of 5:53 p.m.

Accordingly, we are starting to get some reports of flooding across North Central Alabama this evening.

From John Talbot: Walker County Fire reporting that Smith Lake Dam Rd @ Drummond Lake is completely flooded.

From the NWS: at least six inches of standing water over portions of Airport Rd. in Jasper.

Flash Flood Warning: Cullman County til 11:30 PM

| 5:43 pm January 13, 2013

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THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR…
CULLMAN COUNTY IN NORTH CENTRAL ALABAMA…

* UNTIL 1130 PM CST

* AT 530 PM CST…DOPPLER RADAR INDICATED HEAVY RAIN ACROSS CULLMAN
COUNTY…WITH UPWARDS OF ONE INCH OF RAIN IN LESS THAN 45 MINUTES.
THIS WILL LEAD TO EXCESSIVE RUNOFF…CAUSING FLASH FLOODING
THROUGHOUT THE COUNTY. URBAN AND LOW-LYING AREAS WILL BE MOST
SUSCEPTIBLE TO HAVING FLOODING ISSUES…AND AN ADDITIONAL INCH OR
MORE OF RAINFALL IS POSSIBLE THROUGH MIDNIGHT TONIGHT.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…
CULLMAN…HANCEVILLE…GOOD HOPE…FALKVILLE…BAILEYTON…HOLLY
POND…GARDEN CITY…FAIRVIEW…EVA…SOUTH VINEMONT…COLONY AND
WEST POINT.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS…URBAN AREAS…HIGHWAYS…STREETS AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

Severe Storm in Greene County

| 4:24 pm January 13, 2013

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A severe thunderstorm warning continues for northeastern Greene County.

A storm with rotation and the potential for damaging winds is passing north of Eutaw. It will pass between Akron and Union, crossing Highway 11 and eentually moving in the direction of Knoxville.

If it hold together, it could affect the City of Tuscaloosa around 5 p.m.

Damaging winds are the main threat, although we can’t rule out an isolated small spin up tornado as well.

Severe Thunderstorm Warning: Greene County

| 4:06 pm January 13, 2013

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Showers and some embedded thunder are over the northwestern quarter of Alabama at this time.

There is a small amount of instability and a fairly decent amount of low level helicity, so we are getting rotational signatures on Doppler radar.

One is near Fayette right now. Other indications of possible strong winds were over Greene and Sumter Counties.

The NWS has issued a severe thunderstorm warning for parts of Greene County where there are impressive winds indicated on Doppler. Winds may reach 60-70 mph in this storm.

The NWS has issued significant weather alerts for parts of Fayette, Marion, Pickens, Tuscaloosa, Walker and Winston Counties as well as the storms move through.

Winds may gust to 45 mph with these storms.

The showers and storms re ahead of a sharp cold front. Temperatures drop about 20 degrees in the first hour after the front passes.

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

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

* UNTIL 445 PM CST

* AT 358 PM CST…THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THIS STORM WAS LOCATED NEAR GAINESVILLE…OR 13 MILES WEST OF
EUTAW…AND MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE…
UNION…MANTUA…KNOXVILLE…JENA…I 20 REST AREA NEAR EUTAW…
CLINTON AND SNODDY.

THIS INCLUDES…
INTERSTATE 20 EXIT NUMBERS 32 THROUGH 52…



Dramatic Temperature Changes

| 1:34 pm January 13, 2013
Click image to enlarge.

Click image to enlarge.

Let’s take a trip down I-20 early this afternoon toward Texas for a study in contrasts. By the time you get to Tuscaloosa, temperatures are in the 70s. They stay that way until Jackson, Mississippi. It’s only a short distance, around 50 miles, from Jackson to Vicksburg, but by the time you cross the Mississippi River there, temperatures are in the 50s. Get To Monroe, Louisiana, and it’s 45F. By the time you pass Shreveport and get into East Texas, it’s 35F at Tyler.

To further illustrate the dramatic contrast in the two airmasses on either side of the boundary, let’s look at what happened at Vicksburg between 9 and 10 a.m. At 9 o’clock, it was 71F with partly cloudy skies and a balmy south wind averaging 13 mph. One hour later, those southerly winds had become northwesterly, averaging 18 mph and gusting all the way to 38 mph. The temperature had plunged 16 degrees in less than an hour. Actually, the temperature drop occurred in 24 minutes. By 1 o’clock it was down to 46F with a thunderstorm in progress.

That’s what is on our way.

All this means rain, and a good bit of it, over the next 60 hours or so across Alabama as the front makes only grudging progress to the east. By tonight, it will be near I-59, delivering some of those impressive temperature changes to places like Gadsden, Birmingham and Tuscaloosa. Ahead of the front, showers were increasing over South Central Alabama at early afternoon. That trend should continue until the front arrives this evening, and after that you can expect periods of rain through Tuesday.

The heaviest rain looks like it will be in the I-59 corridor now, where 3 to 4 inches of rain could call between now and Wednesday. There is a flash flood watch now for the western counties of the Tennessee Valley in Alabama, but for now, no flash flood watches for Central Alabama. Flash flood warnings were starting to pile up over the Mississippi Delta Counties to our west by early afternoon, however.

After today’s highs that are flirting with or in the 70s, highs will be limited to the 40s Monday through Wednesday. Low will be in the midlde40s tonight, lower 40s tomorrow night and near 40F Wednesday morning.