Mesoscale Discussion #91

MESOSCALE DISCUSSION 0091
   NWS STORM PREDICTION CENTER NORMAN OK
   0344 PM CST THU FEB 02 2012

   AREAS AFFECTED...NRN PORTIONS OF WRN TX THROUGH TX PANHANDLE AND WRN
   OK

   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 

   VALID 022144Z - 022345Z

   THUNDERSTORMS ARE EXPECTED TO DEVELOP FARTHER SWD OVER PORTIONS OF
   THE TX PANHANDLE BY 00-01Z AND EVENTUALLY INTO WRN OK THIS EVENING.
   INITIAL PRIMARY THREAT WILL BE SUPERCELLS WITH ISOLATED LARGE HAIL.
   HOWEVER...A WINDOW WILL EXIST DURING THE EARLY EVENING FOR ISOLATED
   TORNADOES FROM THE SRN TX PANHANDLE INTO NWRN TX AND SWRN OK. AREA
   WILL CONTINUE TO BE MONITORED FOR A POSSIBLE WW BY 23-00Z. 

   WV AND OBJECTIVE ANALYSIS DATA SHOW AN UPPER JET STREAK FROM SRN AZ
   THROUGH SRN AND ERN NM WITHIN BASE OF TROUGH SITUATED OVER THE CNTRL
   AND SRN ROCKIES. MID-UPPER ASCENT WITHIN THE EXIT REGION OF THIS
   FEATURE AND WITHIN STEEP LAPSE RATE ENVIRONMENT IS PROMOTING
   DEVELOPMENT OF ELEVATED CONVECTION FROM NERN MN INTO THE TX AND OK
   PANHANDLES. THIS AREA REMAINS WELL NORTH OF GREATER MOISTURE AND
   INSTABILITY ACROSS W-CNTRL AND WRN TX...AND AS A RESULT IS EXPECTED
   TO REMAIN BELOW SEVERE LEVELS NEXT COUPLE HOURS. 

   LLJ IS STRENGTHENING OVER WRN TX WITHIN UPPER JET EXIT REGION AND IS
   CONTRIBUTING TO MOISTURE ADVECTION AND NWD DESTABILIZATION. STORMS
   SHOULD INCREASE IN COVERAGE AND INTENSIFY THIS EVENING FROM PORTIONS
   OF THE TX PANHANDLE...NWRN TX AND WRN OK AS THE ATMOSPHERE
   DESTABILIZES NWD WITH TIME. STRONG VERTICAL SHEAR PROFILES WITH
   LARGE 0-2 KM HODOGRAPHS WILL SUPPORT A FEW SUPERCELLS...BUT SOME OF
   THE ACTIVITY MAY EVOLVE INTO LINE/BOWING SEGMENTS. A WINDOW MAY
   EXIST FOR ISOLATED TORNADOES AS STORMS DEVELOP ON NRN FRINGE OF
   GREATER MOISTURE RETURN AND BEFORE ONSET OF NOCTURNAL COOLING.
   OTHERWISE...ISOLATED LARGE HAIL AND DAMAGING WIND WILL BE THE MAIN
   THREATS.

   ..DIAL.. 02/02/2012

   ATTN...WFO...OUN...SJT...LUB...AMA...MAF...

Texas Drought Monitor - January 31, 2012

After the rainfall event we experienced last week, we knew that we would have some good news once the new drought monitor was released. Indeed, we do have good news. For the first time in a long time, parts of Texas are officially out of drought conditions. That’s good news for them, but much of the state still remains in drought conditions. However, lets look on the positive side. Compare the amount of Texas that is in the highest drought category now verses back in September. Most of us do have a reason to be thankful today. More rain is coming!

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Storm Prediction Center - Day 2 Convective Outlook

Lets start out with the latest Storm Prediction Center outlook for Thursday. With their latest convective outlook issued earlier Wednesday Afternoon, they have a standard slight risk in effect for portions of West Texas and Southwest Oklahoma. While this outlook will likely change based on mesoscale features, at the time of this post, the risk extended from San Angelo, northwest to Childress, eastward to Ringgold and Eastland County.

0Z NAM: 850 millibar winds at 6 PM Thursday

We like to start off by analyzing the mid to upper levels of the atmosphere to get a general diagnosis of the amount of wind shear/vorticity that will come into play during an event. At 6 PM tomorrow, we have a positive tilt shortwave in place across the four corners region with the right-entrance region of the jet beginning to influence West Texas. In terms of wind shear, we like to see winds at or above 35 knots to support organized convection in the mid to upper levels of the atmosphere. By 6 PM tomorrow, it looks like we’ll have 50 to 70 knots of wind overspreading West Texas at 6 PM.

0Z NAM: 850 millibar winds at 9 PM Thursday

Taking a look at the low levels, specifically at 850 millibars, the 0Z NAM already has a sustained low level jet in place by 6 PM on Thursday. When determining the potential for specific severe weather hazards, we like to check the direction of the wind at 850 millibars. If the wind is coming from the southeast with 500 millibar winds from the southwest, that creates turning with height. If the winds at 850 millibars and 500 millibars are out of the southwest, that creates a linear type setup, which favors squall lines verses discrete supercells. It looks like we’ll have southeasterly 850 millibar winds tomorrow evening. At 6 PM, the NAM has the low level jet at 30 knots.

Fast forward three hours and you still have southeasterly winds at 850 millibars, but notice that instead of the 25 to 30 knots we were seeing earlier that we’re cranking up to 40 to 50 knots! That’s actually normal for a low level jet. After sunset and once the initial daytime heating subsides, the low level jet will increase. The process on why that occurs will make an excellent education post one day So, wind shear looks favorable for severe weather on Thursday across West Texas, but that’s only one of three necessary ingredients for severe weather. Lets take a look at instability…

The first thing to note from this graphic is that these instability values are for 9 PM on Thursday, nearly three hours after sunset. Even with the loss of daytime heating, instability remain high (for a cool season event) along the dryline and warm front. The warm front can be identified by the sudden drop off in instability across Oklahoma, while the dryline is your north-south feature located roughly along Interstate 27. During cool season events, I like to see instability values in excess of 1,000 joules per kilogram (J/kg). That doesn’t look like its going to be a problem tomorrow afternoon and evening. In fact, instability values appear to be in access of 1,500 joules per kilogram which is pretty impressive for early February. Now we have confirmed that wind shear and instability won’t be an issue.

0Z NAM: Surface dewpoints at 9 PM Thursday

Now for our final ingredient… Moisture! While wind shear and instability look supportive of severe weather, I’m a little concerned about instability. No doubt it will be sufficient for severe weather as any value above 50 degrees should be enough for severe thunderstorms, I’m looking in terms of the hazard of more significant severe weather, like tornadoes. For surface based thunderstorms capable of producing tornadoes, I generally like to see dewpoint values in excess of 60 degrees. During the spring time, that number increases to 65 degrees. Yet, there are a few factors that may help thunderstorms tomorrow develop low level rotation even with the lower dewpoint values. The first factor is the terrain and elevation. If thunderstorms form on the caprock, the higher elevation may allow thunderstorms to produce organized low level rotation with dewpoint values in excess of 55° verses the 60° dewpoint values I look for. The second factor is that surface temperatures won’t get too warm, likely upper 60s to lower 70s. That means we won’t have a large temperature/dewpoint spread which will keep cloud bases lower. The third factor is that storms may remain surface based well into the evening, when they will be able to use the abundant wind shear in place. We’ll find that out tomorrow…

Either way, it does appear we will see a complex of thunderstorms form across the eastern Texas Panhandle and Northwest Texas between 5 and 9 PM Thursday, before moving northeast into Oklahoma. The primary hazards with a squall line would be damaging winds and the possibility of large hail. In discrete thunderstorms, large hail and the possibility of a tornado would be possible. If we end up with higher moisture values then currently anticipated, the tornado threat would increase substantially. See the video for complete details…

Storm Prediction Center - Day 3 Convective Outlook

0Z NAM: Instability at 3 PM Friday

The severe weather threat will spread east to the Interstate 35 corridor on Friday as the upper level storm system begins to push northeastward. Compared to Thursday, instability values appear to be much lower. In fact, the NAM doesn’t have any instability values over 500 J/Kg across North Texas on Friday. While instability levels will be higher across South Texas, the upper level storm system will be too far north to cause any issues that far south. There may be a few severe wind reports as the squall line passes across North Texas on Friday, but at this point the severe weather threat looks fairly marginal. We’ll keep an eye on it though and provide an update with our February 2nd Daily Weather Video.

I am planning to chase in West Texas on Thursday. My laptop is still down for repairs so I’ll have to put my desktop in the car as the backup computer. I’m not sure if it has the processor power to stream live video, but if it does I’ll certainly have that available on Thursday! Stay tuned for the latest updates on our Facebook and Twitter pages. I hope to have our next weather video posted by 9:30 AM on Thursday.

Severe Thunderstorm Watch #200

 URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 20
   NWS STORM PREDICTION CENTER NORMAN OK
   1235 PM CST WED FEB 1 2012

   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 

          CENTRAL AND SOUTHERN ARKANSAS
          NORTHERN LOUISIANA
          EXTREME SOUTHEAST OKLAHOMA
          NORTHEAST TEXAS

   EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1235 PM UNTIL
   800 PM CST.

   HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES SOUTHWEST
   OF DE QUEEN ARKANSAS TO 50 MILES EAST NORTHEAST OF PINE BLUFF
   ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).

   REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
   FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
   AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
   THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
   AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
   DO PRODUCE TORNADOES.

   DISCUSSION...A CLUSTER OF THUNDERSTORMS OVER SOUTHEAST OK WILL
   SPREAD EASTWARD INTO AR...WHILE NEW STORMS POTENTIALLY DEVELOPING
   SOUTHWARD INTO NORTHEAST TX.  STEEP MID LEVEL LAPSE RATES AND
   MODERATE CAPE VALUES WILL PROMOTE THE RISK OF A FEW INTENSE CELLS
   CAPABLE OF LARGE HAIL AND GUSTY WINDS.

   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM
   MOTION VECTOR 27035.

   ...HART

Snow Cover (February 10, 2011)

Snow Cover (January 27, 2012)

While we have experienced some brief cold spells, most folks across Texas are asking what happened to winter. It’s not just us in Texas that are wondering, but most of the United States. Take these two snow cover graphics for example, the first graphic is from February 10, 2011 (about a week after our major winter storm and coldest spell in 20 years in Texas). A majority of the United States, east of the Rockies, have snow on the ground. In fact, the snow cover extended south to the Interstate 20 corridor from Texas all the way into Alabama. Even Houston had some snow! Fast forward about 50 weeks and you have the second graphic. You’re hard pressed to find any snow across the Country. Sure, you have a few inches on the ground in  the Dakotas east to Wisconsin, but this time last year they had almost two to three feet on the ground!

So why the major difference this year? We remain in La Nina conditions, similar to last winter, so what gives? It’s actually pretty simple and can be attributed to one specific parameter. For the meteorological definition, we differ to the Climate Prediction Center. For more detailed information on the NAO, visit the CPC at http://www.cpc.ncep.noaa.gov/data/teledoc/nao.shtml

“The NAO consists of a north-south dipole of anomalies, with one center located over Greenland and the other center of opposite sign spanning the central latitudes of the North Atlantic between 35°N and 40°N. The positive phase of the NAO reflects below-normal heights and pressure across the high latitudes of the North Atlantic and above-normal heights and pressure over the central North Atlantic, the eastern United States and western Europe. The negative phase reflects an opposite pattern of height and pressure anomalies over these regions. Both phases of the NAO are associated with basin-wide changes in the intensity and location of the North Atlantic jet stream and storm track, and in large-scale modulations of the normal patterns of zonal and meridional heat and moisture transport (Hurrell 1995), which in turn results in changes in temperature and precipitation patterns often extending from eastern North America to western and central Europe (Walker and Bliss 1932, van Loon and Rogers 1978, Rogers and van Loon 1979).” (Source 1).

 

Now that we have the official, wordy definition out of the way, let me explain it in a way most of you will be able to understand. When the NAO is in a positive state; very cold air often has great difficulty making it to the Southern United States. In order for cold air of arctic origin to make it south into the United States, the jet-stream must originate from a high latitude and then dive south, known as a trough. That type of  setup is commonly associated with a negative NAO. Cold air can still make it into the United States, but not the bitterly cold, arctic air that can cause several days of freezing weather in Texas with sub-zero temperatures across northern US. During a positive NAO, we generally have a warmer pattern across the country. We definitely can get cold snaps, but not to the extremes or duration as we would get with a negative NAO. During a positive NAO, we generally have above average temperatures across the southern US.

North Atlantic Oscillation from September 30, 2011 through January 27, 2012

Now that I’ve explained the basics with the NAO, lets take a look at what it’s been showing over the past few months. This graphic shows the North Atlantic Oscillation from September 30, 2011 to January 27th. The red lines are model guidance for the next 14 days, we’ll talk about that in a minute. Over the past few months, we have not seen any major negative trends in the NAO, which is why we have not had any major cold spells or winter storms across the Country as a whole. Now there have been localized events, especially in Iowa/Wisconsin/Illinois, but they’re at a higher latitude and have localized features (The Great Lakes) that can help enhance their events. Until we see the NAO go negative, we will not see a major cold spell. Looking in the next two weeks, there really is no sign of the NAO going negative. We’re actually pretty close to neutral right now, but the NAO will head back up into the positive territory as we get into February.

That generally means we won’t likely see any long-duration cold spells in the near future. We’ll have cold fronts come through once in a while that will cool us back down to our average temperatures across Texas, but the duration of those cool spells won’t last long.

6-10 Day Temperature Anomaly Forecast

As would be expected with the positive NAO, much of the country will be experiencing above average temperatures for the next two weeks. This graphic comes from the Climate Prediction Center and shows that they expect much of the country has a good chance of experiencing above average temperatures over the next two weeks. While the Continental US will be warm, take a look at Alaska. With the positive NAO, the colder air is being bottled up north so they will likely experience colder then average temperatures for their neck of the woods. One thing we’ll have to watch for in February is that cold air to push south. It’s been bottled up north for a while now and we rarely make it through a winter without one cold spell. Let me remind you that many of our biggest winter storms have been in February, so just because it’s been warm so far, don’t think we’re going to get through the rest of winter without a major cold spell. We’ll keep an eye on things as we head into February, but I hope you’ve learned a bit about what we look for when forecasting cold spells across the USA.

Just to recap…
Positive NAO = Average/Above Average Temperatures Possible

Negative NAO = Below Average Temperatures Possible

Source 1: Climate Prediction Center Internet Team. "North Atlantic Oscillation (NAO)." Climate Prediction Center. National Weather Service, 10 Jan. 2012. Web. 27 Jan. 2012. <http://www.cpc.ncep.noaa.gov/data/teledoc/nao.shtml>.

Austin, Texas Tornado

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
251 PM CST WED JAN 25 2012

...PRELIMINARY STORM DAMAGE SURVEY FOR NORTHEAST AUSTIN TX...

A NATIONAL WEATHER SERVICE STORM DAMAGE SURVEY WAS CONDUCTED THIS
MORNING IN THE AREA ALONG SPRINGDALE ROAD IN NORTHEAST AUSTIN.  THE
FOLLOWING HAVE BEEN DETERMINED...

EVENT DATE: JANUARY 25 2012
EVENT RATING: AWAITING FINAL DATA
ESTIMATED PEAK WINDS (MPH): AWAITING FINAL RATING
INJURIES/FATALITIES: 0
EVENT START TIME/LOCATION COORDINATES: 30.3221/-97.6536 AT 258 AM
EVENT END TIME/LOCATION COORDINATES:   30.3381/-97.6551 AT 305 AM
DAMAGE PATH LENGTH (IN MILES): 1.14
DAMAGE PATH WIDTH (IN YARDS): 50

THE TORNADO PATH BEGAN AT THE INTERSECTION OF COMMERCIAL PARK DRIVE
AND OLD MANOR ROAD...WITH RADAR INDICATING A TOUCHDOWN TIME NEAR
2:58 AM. DAMAGE CONTINUED NORTH THROUGH AN INDUSTRIAL PARK...THEN
ACROSS U.S. 290...BEFORE ENTERING THE WALNUT PLACE SUBDIVISION.
FURTHER DAMAGE OCCURRED TO HOMES ON THE WEST SIDE OF HAPPY TRAIL...
WITH TREES ON THE EAST SIDE OF HAPPY TRAIL LAYING DOWN TOWARD THE
WEST AND CONVERGING WITH THE DAMAGE TO THE HOMES.  DEBRIS WAS NOTED
ALONG FERGUSON LANE...WITH THE TORNADO PATH ENDING JUST WEST OF THE
INTERSECTION OF FERGUSON LANE AND SANSOM ROAD.;

Courtesy of City of Austin Homeland Security and Emergency Management – Tornado Track Map

San Antonio, Texas Tornado

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
331 PM CST WED JAN 25 2012

...PRELIMINARY STORM DAMAGE SURVEY FOR SOUTHWEST SAN ANTONIO TX...

A NATIONAL WEATHER SERVICE STORM DAMAGE SURVEY WAS CONDUCTED THIS
AFTERNOON IN THE AREA ALONG DEER PARK (STREET) IN SOUTHWEST SAN
ANTONIO.  THE FOLLOWING HAVE BEEN DETERMINED...

EVENT DATE: JANUARY 25 2012
EVENT RATING: AWAITING FINAL DATA
ESTIMATED PEAK WINDS (MPH): AWAITING FINAL RATING
INJURIES/FATALITIES: 0
EVENT START TIME/LOCATION COORDINATES: 29.4556/-98.6645 AT 415 AM
EVENT END TIME/LOCATION COORDINATES:   29.4545/-98.6603
DAMAGE PATH LENGTH (IN MILES): 0.27
DAMAGE PATH WIDTH (IN YARDS): 30

THE TORNADO PATH BEGAN AT THE INTERSECTION OF DEER PARK AND RICHLAND
HILLS DRIVE...AND CONTINUED ALONG DEER PARK TO THE INTERSECTION OF
DEER PARK AND LEANDER.  THE PRIMARY DAMAGE WAS A CARPORT BEING
THROWN INTO A HOME AND CAUSING SUBSTANTIAL DAMAGE.

Estimated Tornado Track (This was created using the damage survey. This meant to only be an estimation of the exact track of the tornado.)

Pearland, Texas Tornado

Pearland, TX Damaging Wind and Tornado Track (From NWS Houston)

THE SURVEY TEAM FOUND A SWATH OF STRAIGHT LINE WIND DAMAGE
BEGINNING AROUND HATFIELD ROAD AND EXTENDED EAST NORTHEAST AROUND
2 MILES WHICH CONSISTED OF FENCES BLOWN DOWN AND SPORADIC TREE
DAMAGE. THE DAMAGE SWATH WAS BETWEEN 1/10 AND 1/4 MILE WIDE.
WITHIN THAT SWATH IT WAS DETERMINED THAT A SHORT LIVED TORNADO
ALSO TOUCHED DOWN AT HIGHWAY 35 AND PLUM STREET. A CHEVRON
STATION HAD ITS ITS GAS PUMP AWNING DESTROYED AND THE BUSINESS TO
THE SOUTH OF PLUM STREET HAD ITS ROOF PEELED BACK. TORNADO PATH
WAS APPROXIMATELY 200 YARDS LONG AND WAS 75 YARDS WIDE. IT WAS
RATED AN EF-0 WITH 65 TO 85 MPH WINDS.

Brenham, Texas Tornado

STRAIGHT LINE WIND DAMAGE WAS OBSERVED WITHIN THE TOWN OF BRENHAM
EXTENDING TO AREAS ALONG AND EAST OF FM 50 TO NEAR INDEPENDENCE.
THIS EVENT WAS FROM APPROXIMATELY 700 AM TO 725 AM. WINDS WERE
ESTIMATED BETWEEN 60 AND 75 MPH WHICH DOWNED POWERLINES AND
NUMEROUS TREES. THE DAMAGE WAS SPORADIC AND NOT CONTINUOUS. THE
ASSOCIATED LINE OF STORMS ALSO DROPPED A TORNADO DOWN WEST OF
COUNTY ROAD 50 JUST TO THE NORTH OF BRENHAM MUNICIPAL AIRPORT AND
TRAVELED EASTWARD TO THE INTERSECTION OF FM262 AND COUNTY ROAD 65.
THIS TORNADO DESTROYED SEVERAL METAL OUTBUILDINGS AND REMOVED THE
ROOF FROM A BARN. IT ALSO PRODUCED MINOR ROOF DAMAGE TO A HOUSE
AND SNAPPED NUMEROUS LARGE TREES. THIS TORNADO WAS RATED AN EF-0
WITH ESTIMATED 85 MPH WINDS. DAMAGE PATH WAS 2.5 MILES LONG AND 50
YARDS WIDE.

Caldwell, Texas Tornado

EVENT TIME…6:43 AM
EVENT TYPE…EF1 TORNADO
ESTIMATED PEAK WINDS (MPH)…90 to 100
INJURIES/FATALITIES…0

AN EF1 TORNADO CUT A DAMAGE SWATH THAT EXTENDED FROM JUST NORTHEAST OF DEANVILLE TO JUST SOUTHEAST OF CALDWELL. DAMAGE APPEARED TORNADIC ALONG THE SOUTHERN PORTION OF THAT AREA WITH NUMEROUS TREES SNAPPED OR UPROOTED. ONE HOUSE WAS PUSHED OFF A CINDER BLOCK BASE THEN DRAGGED ALONG A CURVED PATH FOR ABOUT 100 FEET. A FEED TRAILER WAS LIFTED OVER A FENCE THEN ROLLED ABOUT 150 FEET. SEVERAL SHEDS AND BARNS WERE DESTROYED. STRAIGHT LINE WIND DAMAGE ALSO FOUND IN THE AREA.

Madison County, Texas Tornado

EVENT TIME…8:00 AM
EVENT TYPE…EF0 TORNADO
ESTIMATED PEAK WINDS (MPH)…65 to 85
INJURIES/FATALITIES…0
DAMAGE PATH LENGTH… 1/3 MILE
DAMAGE WIDTH… 50 YARDS

TREES SNAPPED OR UPROOTED ALONG A NARROW PATH. BARN DESTROYED WITH TIN FROM ROOF FANNED OUT IN DIFFERENT DIRECTIONS AND THROWN IN SOME CASES ABOUT 200 YARDS. MINOR ROOF DAMAGE TO HOME. STRAIGHT LINE WIND DAMAGE ALSO FOUND IN THE AREA.

Huntsville, Texas Tornadoes

EVENT TIME…9:06 AM
EVENT TYPE…EF0 TORNADO
ESTIMATED PEAK WINDS (MPH)…65 to 85
INJURIES/FATALITIES…0
DAMAGE PATH LENGTH… 0.36 MILES
DAMAGE WIDTH… 50 YARDS

TORNADO TOUCHED DOWN AT CAR DEALERSHIP, LIFTED METAL AWNING AND MOVED IT 100 YARDS AWAY ON TOP OF TWO CARS. THERE WAS MINOR DAMAGE TO THE TWO CARS.

EVENT TIME…9:10 AM
EVENT TYPE…EF0 TORNADO
ESTIMATED PEAK WINDS (MPH)…65 to 85
INJURIES/FATALITIES…0
DAMAGE PATH LENGTH… 50 YARDS
DAMAGE WIDTH… 25 YARDS

TORNADO BRIEFLY TOUCHED DOWN IN A RESIDENTIAL SECTION OF HUNTSVILLE CAUSING SIGINIFICANT TREE DAMAGE. ONE OF THE TREES DID FALL ON A NEARBY HOUSE CAUSING SOME ROOF DAMAGE. TREES IN THE AREA WERE BLOWN DOWN IN DIFFERENT DIRECTIONS GIVING INDICATION OF A STRONG CIRCULATION IN THE AREA.

ADDITIONAL WIDESPREAD STRAIGHT LINE WIND DAMAGE WAS FOUND IN THE HUNSTVILLE AREA WITH NUMEROUS TREES DOWN THROUGHOUT THE CITY. THERE WAS ONE INJURY AT SAM HOUSTON STATE UNIVERSITY FROM A FALLING TREE LIMB.

Houston NWS: Huntsville, TX Tornado Track

National Weather Service in Fort Worth: Graphical representation of rising lake levels.

This information comes from the National Weather Service in Fort Worth…

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
350 PM CST WED JAN 25 2012

          ....NORTH TEXAS LAKES ARE ON THE RISE...

THE WIDESPREAD HEAVY EVENT OF THE PAST 24 HOURS HAS BROUGHT SOME
SIGNIFICANT RECHARGE TO THE LAKES IN NORTH TEXAS. RAINFALL TOTALS
AVERAGED 3 TO 5 INCHES ACROSS THE AREA FROM MIDDAY TUESDAY THROUGH
NOON WEDNESDAY. 

LAKE                LAKE ELEVATION GAIN THROUGH 3PM WEDNESDAY

GRAPEVINE           3.1 FEET
LEWISVILLE          1.8 FEET
JOE POOL            2.7 FEET
LAVON               2.5 FEET
RAY HUBBARD         1.4 FEET
RAY ROBERTS         1.5 FEET
ARLINGTON           5.4 FEET
EAGLE MOUNTAIN      2.2 FEET
BRIDGEPORT          1.3 FEET
POSSUM KINGDOM      1.2 FEET
GRANBURY            3.6 FEET
BARDWELL            2.2 FEET
RICHLAND CHAMBERS   0.5 FEET
CEDAR CREEK         0.5 FEET
WHITNEY             1.5 FEET