Weeralarm V.S. # 12 Extreem weer - Take me back to Oklahoma

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MESOSCALE DISCUSSION 2390
NWS STORM PREDICTION CENTER NORMAN OK
1122 AM CST THU DEC 22 2011

AREAS AFFECTED...SERN MS / SWRN AL

CONCERNING...TORNADO WATCH 899...

VALID 221722Z - 221815Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 899 CONTINUES.

TORNADO RISK WILL LOCALLY BE MAXIMIZED AS/IF STORMS MATURE INTO
SUPERCELLS AS THEY MOVE NEWD FROM SERN MS/FAR SWRN AL INTO SWRN AL.
SUPERCELLS THAT DEVELOP AHEAD OF APPROACHING SQUALL LINE WILL POSE
THE GREATEST RISK FOR TORNADO/S.

MESOSCALE ANALYSIS PLACES AN INCREASINGLY MOIST/DESTABILIZING WARM
SECTOR ACROSS SERN MS INTO THE SWRN QUARTER OF AL. TEMPS IN THE LOW
70S WITH UPPER 60S DEWPOINTS WILL OFFSET A MARGINAL LAPSE RATE
PROFILE AS STORMS DEVELOP/MOVE NEWD THE NEXT FEW HOURS. KMOB VAD
SHOWS 350 MS/S2 0-1 KM SRH WITHIN A STRONGLY SUPPORTIVE SUPERCELL
WIND PROFILE. GIVEN MODESTLY IMPROVING THERMODYNAMIC SETUP
COINCIDENT WITH THE DIURNAL CYCLE...EXPECTING A LOCALIZED HIGHER
THREAT FOR A TORNADO OR TWO /PERHAPS SIGNIFICANT/ WITH ANY
LONG-LIVED SUPERCELLS THAT DEVELOP/PERSIST AHEAD OF ADVANCING SQUALL
LINE THE NEXT FEW HOURS ACROSS SWRN AL.

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Strong storms spin tornado, flood streets

Strong storms pounded the Houston area on Monday, flooding streets, spawning a tornado and dropping hail.

Severe thunderstorm warnings, flash flood warnings and flood advisories remain issued for southeast Texas counties.

"Whenever a thunderstorm is strong enough to produce hail, it's strong enough to produce a tornado. They almost go hand-in-hand" KPRC chief meteorologist Frank Billingsley said. "These heavy rains continue to push across Houston and into the east at 25 mph. Four inches of rain has been common south of Interstate 10. Although there's not much behind this system, we're going to continue to deal with this until 1 o'clock."

Fort Bend County was hit the hardest.

Sugar Land recorded the most rain with 6.20 inches as of noon. Katy had 4.36 inches. Pearland logged 3.88 inches and Houston had 4.20 inches of rain.

"We've got a lot of lightning with this system and that's also a big danger," KPRC meteorologist Anthony Yanez said. "There's a lot of heavy rain."

A tornado touched down in Fort Bend County along FM 1093 and FM 723 shortly after 9:30 a.m. The Sheriff's Office said power lines and trees were down in the area.

Beverly Moore heard the tornado approach her house on FM 723.

"All the doors in the house were trying to open and shut. It sounded like a train going through, so we hid in the closet," she said. "It was definitely a tornado. We hid for about 15 minutes."

"We've heard of roof damage in a neighborhood," said a spokesman with the Fort Bend County Sheriff's Office. "There's been quite a bit of flooding. There's been some hail but we haven't heard anything about injuries."

Several homes in the Kingsbridge Place neighborhood in Fort Bend County were severely damaged by the storms.

Bricks, wood and shingles were torn off houses and garage doors were twisted and bent.

"I was actually sleeping when it all happened," one of the residents said. "All you hear is it starts raining harder and you can feel the wind pushing inside the house. Then the door flies open and the ceiling starts leaking."

A neighbor said they did not know what was happening.

"We thought it was like an earthquake or tornado," he said. "At my house, a piece of wood came through the wall. The wall didn't collapse, but a piece of wood came right through it. We're lucky to be alive."

The Richmond Fire Department helped residents evacuate around Third Street as water crept into houses.

"We've had reports of water in homes," said Alan Spears with the Fort Bend County Office of Emergency Management. "We had some boat evacuations going on.

A funnel cloud was spotted on Highway 99 shortly after 9 a.m., but there were no reports of it touching down.

Afternoon pre-kindergarten classes were canceled for the Lamar Consolidated Independent School District.

The floodwaters were receding in the area of Highway 6 and Bissonnet about 11 a.m., but it was still knee-high in the middle of some area streets.

High water was reported on freeways across the city. There were at least 15 locations where water impeded freeway traffic at midday.

The main lanes of state Highway 288 near Holly Hall were impassible and drivers tried to turn around in the median, but they did not get very far because the other side of the road was also flooded.

Officials recommend drivers stay off the roads unless absolutely necessary.

"It only takes about 6 inches (of water) to knock a person over," said Michael Walter of the Houston Office of Emergency Management. "It only takes about 2 feet of water to wash away an SUV."

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Reed Timmer: Meteorologist and Extreme Storm Chaser
New tornado warning just southwest of Nashville, TN. Should move south of the metro. Very strong rotation and moving rapidly east at 65 mph. Hickman, Maury, and Williamson Counties.

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THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR... SOUTHERN DAVIDSON COUNTY IN MIDDLE TENNESSEE... NORTHWESTERN RUTHERFORD COUNTY IN MIDDLE TENNESSEE... NORTHEASTERN WILLIAMSON COUNTY IN MIDDLE TENNESSEE...

* UNTIL 130 PM CST

* AT 1255 PM CST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 5 MILES SOUTHWEST OF FOREST HILLS... OR 8 MILES NORTHWEST OF FRANKLIN... AND MOVING EAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE... BELLE MEADE... FOREST HILLS... BRENTWOOD... OAK HILL... LA VERGNE AND BERRY HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS