Special Weather Statement, NWS Fort Worth, TX

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
609 AM CDT MON OCT 15 2007

.UPDATE...
AS OF 11Z...A COLD FRONT EXTENDED JUST SOUTHEAST OF A
GAINESVILLE...DECATUR...TO ABILENE LINE. THIS POSITION IS FASTER
THAN ANY OF THE MODELS HAD EARLIER INDICATED...SO HAVE UPDATED
THE FORECAST TO BETTER REFLECT THE TIMING OF THE FRONT. #58

&&

.PREV DISCUSSION... /ISSUED 600 AM CDT MON OCT 15 2007/

AVIATION...
600 AM CDT

OUTFLOW QUICKLY APPROACHING METRO TAF SITES. SWITCH TO NORTH FLOW
NEEDED AT DFW. LIGHT NORTH WINDS WILL THEN PREVAIL THE REMAINDER OF
THE DAY...WITH SOME CHAOTIC WIND IN AND NEAR STORMS. WITH PRECIP AND
OUTFLOW IN ADVANCE OF FROPA...FRONT MAY BECOME DIFFICULT TO DISCERN.

LINE OF CONVECTION AHEAD OF FRONT BECOMING BETTER DEVELOPED.
ORIENTATION OF LINE AND NORTHEASTWARD CELL MOTION WILL FAVOR
TRAINING AND POTENTIAL FOR PROLONGED DISRUPTION TO OPERATIONS THIS
MORNING. AT METRO SITES...SIGNIFICANT CONVECTION WILL TAPER OFF
AROUND MIDDAY AS MAIN BOUNDARY PUSHES THROUGH.

ARRIVAL OF CONVECTION AT WACO WILL BE LATER IN THE MORNING AND WILL
LINGER LONGER INTO THE AFTERNOON. ASIDE FROM ERRATIC WIND DIRECTION
IN/NEAR STORMS...NORTHERLY FLOW WILL LIKELY NOT ARRIVE AT WACO UNTIL
SUNSET. 25

PREV DISCUSSION...
358 AM CDT

THE 08Z ANALYSIS SHOWS THAT THE COLD FRONT HAS ENTERED THE
NORTHWESTERN PART OF THE FORECAST AREA...AND EXTENDED SOUTHEAST
OF A NOCONA....TO GRAHAM....TO ABILENE LINE. THIS FRONT WILL
CONTINUE TO MOVE SOUTHEAST THROUGH THE FORECAST AREA TODAY. THERE
REMAINS THE POTENTIAL FOR SEVERE WEATHER AND HEAVY RAIN TO THE
SOUTHEAST OF THE FRONT...AND THIS IS MENTIONED IN THE ZONES AND
WILL BE INCLUDED IN THE HAZARDOUS WEATHER OUTLOOK. THE UPPER
LEVEL TROUGH WILL LIFT NORTHEASTWARD TODAY AND RAIN CHANCES WILL
WILL END FROM NORTHWEST TO SOUTHEAST THIS AFTERNOON AND TONIGHT.
ANOTHER SHORTWAVE WILL MOVE APPROACH ON WEDNESDAY...BRINGING A
CHANCE OF SHOWERS AND THUNDERSTORMS LATE BEFORE DAYBREAK ACROSS
THE NORTHWESTERN ZONES...AREAWIDE WEDNESDAY AND ENDING WEDNESDAY
NIGHT ACROSS THE EAST. A FEW STORMS MAY BE SEVERE WEDNESDAY
AFTERNOON/EVENING. YET ANOTHER SHORTWAVE WILL MOVE ACROSS THE
CENTRAL PLAINS THURSDAY INTO FRIDAY...HOWEVER THE BEST LIFT WITH
THIS SYSTEM WILL BE FARTHER NORTH. THIS SYSTEM WILL DRIVE ANOTHER
COLD FRONT THROUGH NORTH TEXAS...BUT IT APPEARS THAT THE BEST
CHANCES OF RAIN WILL BE TO OUR NORTH. DRY WEATHER IS EXPECTED
FROM THURSDAY THROUGH THE WEEKEND. #58

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  77  62  85  69  85 /  90  40  10  10  30
WACO, TX              81  65  86  71  88 /  80  50  10  10  30
PARIS, TX             74  59  83  66  84 / 100  50  10  10  30
DENTON, TX            75  57  85  68  86 /  80  30  10  10  20
MCKINNEY, TX          76  57  85  68  85 / 100  40  10  10  30
DALLAS, TX            77  64  85  69  85 /  90  40  10  10  30
TERRELL, TX           79  64  85  69  86 /  90  50  10  10  30
CORSICANA, TX         79  65  85  69  88 /  90  60  20  10  30
TEMPLE, TX            83  64  87  70  88 /  80  50  20  10  20

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

25/58

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
500 AM CDT MON OCT 15 2007

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-161100-
MONTAGUE-COOKE-GRAYSON-FANNIN-LAMAR-YOUNG-JACK-WISE-DENTON-COLLIN-
HUNT-DELTA-HOPKINS-STEPHENS-PALO PINTO-PARKER-TARRANT-DALLAS-
ROCKWALL-KAUFMAN-VAN ZANDT-RAINS-EASTLAND-ERATH-HOOD-SOMERVELL-
JOHNSON-ELLIS-HENDERSON-COMANCHE-MILLS-HAMILTON-BOSQUE-HILL-
NAVARRO-FREESTONE-ANDERSON-LAMPASAS-CORYELL-BELL-MCLENNAN-FALLS-
LIMESTONE-LEON-MILAM-ROBERTSON-
500 AM CDT MON OCT 15 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY. THE AREA OF
GREATEST THREAT WILL SHIFT SOUTHEAST DURING THE COURSE OF THE DAY...
AS A COLD FRONT MOVES THROUGH NORTH TEXAS.

HAIL AND DAMAGING WINDS WILL BE POSSIBLE...BUT THE MAIN HAZARD
APPEARS TO BE HEAVY RAINFALL AND FLOODING ISSUES. RAINFALL AMOUNTS
OF 2 TO 3 INCHES WILL BE POSSIBLE WITH THE HEAVIER ACTIVITY...WITH
ISOLATED TOTALS OF 4 INCHES.

.DAYS TWO THROUGH SEVEN...
THERE WILL BE A SLIGHT CHANCE OF THUNDERSTORMS ON TUESDAY ACROSS
SOUTHEASTERN PORTIONS OF NORTH TEXAS.

THERE IS A CHANCE OF THUNDERSTORMS ACROSS ALL OF NORTH TEXAS ON
WEDNESDAY. SOME OF THE STORMS MAY BECOME SEVERE...PARTICULARLY IN
NORTHWESTERN PORTIONS OF NORTH TEXAS.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL LIKELY BE REQUESTED TODAY ACROSS PORTIONS OF
NORTH TEXAS.

25

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
509 AM CDT MON OCT 15 2007

TXZ129-151045-
EASTLAND TX-
509 AM CDT MON OCT 15 2007

...SIGNIFICANT WEATHER ADVISORY FOR...
  EASTERN EASTLAND COUNTY

AT 509 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 3 MILES SOUTHEAST OF EASTLAND...MOVING EAST AT 30
MPH.

CITIES IN THE PATH OF THIS STORM INCLUDE EASTLAND AND RANGER.

HALF INCH HAIL AND WIND GUSTS TO 40 MPH CAN BE EXPECTED FROM THIS
STORM.

IF THIS STORM INTENSIFIES...A SEVERE WEATHER WARNING MAY BE NEEDED.

LAT...LON 3252 9848 3233 9848 3224 9879 3244 9884
TIME...MOT...LOC 1009Z 261DEG 28KT 3237 9876

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
634 AM CDT MON OCT 15 2007

TXZ117-151200-
PARKER TX-
634 AM CDT MON OCT 15 2007

...SIGNIFICANT WEATHER ADVISORY FOR...
  PARKER COUNTY

AT 634 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
CLUSTER OF THUNDERSTORMS WITH HEAVY RAINFALL AND FREQUENT LIGHTNING.
THE CLUSTER OF THUNDERSTORMS WAS CENTERED 4 MILES SOUTHWEST OF
WEATHERFORD...MOVING EAST AT 35 MPH.

CITIES IN THE PATH OF THIS STORM INCLUDE ALEDO...ANNETTA...HUDSON
OAKS...RENO...SPRINGTOWN...WEATHERFORD AND WILLOW PARK.

VERY HEAVY RAIN AND WIND GUSTS TO 40 MPH ARE LIKELY WITH THIS STORM.

HEAVY RAINFALL MAY RESULT IN FLOODING OF LOW LYING AREAS SUCH AS
DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS AS THEY MAY BE WASHED OUT.

LAT...LON 3269 9801 3299 9770 3299 9755 3255 9755
      3256 9805 3258 9806
TIME...MOT...LOC 1134Z 257DEG 31KT 3271 9777

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
653 AM CDT MON OCT 15 2007

TXZ103-118-151300-
DENTON TX-TARRANT TX-
653 AM CDT MON OCT 15 2007

...SIGNIFICANT WEATHER ADVISORY FOR...
  DENTON COUNTY
  TARRANT COUNTY

...VERY HEAVY RAINS SPREADING INTO THE METROPLEX...

AT 653 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED 3 MILES SOUTHWEST OF
AZLE...MOVING NORTHEAST AT 30 MPH.

VERY HEAVY RAINS AND WIND GUSTS TO 35 MPH ARE LIKELY WITH THIS
CLUSTER OF THUNDERSTORMS. FREQUENT LIGHTNING WILL ALSO ACCOMPANY
THIS ACTIVITY.

ADDITIONAL SHOWER AND THUNDERSTORM ACTIVITY WILL CONTINUE TO DEVELOP
ACROSS TARRANT AND DENTON COUNTIES THIS MORNING. HEAVY RAINS MAY
CAUSE SIGNIFICANT PONDING OF WATER ON ROADWAYS...LEADING TO PROBLEMS
DURING RUSH HOUR TRAFFIC.

HEAVY RAINFALL MAY RESULT IN FLOODING OF LOW LYING AREAS SUCH AS
DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS AS THEY MAY BE WASHED OUT.

LAT...LON 3255 9754 3298 9754 3301 9738 3322 9739
      3335 9698 3331 9683 3318 9683 3301 9684
      3299 9703 3256 9704
TIME...MOT...LOC 1153Z 241DEG 27KT 3288 9754