River Flood Warning 96, NWS Fort Worth, TX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FORT WORTH TX
400 AM CDT WED MAY 20 2015

.DISCUSSION...
NUMEROUS SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP AND
MOVE EAST ACROSS THE RED RIVER COUNTIES THROUGH THE MORNING HOURS AS
A COLD FRONT SLIDES SLOWLY SOUTH FROM OKLAHOMA. THESE STORMS
SHOULD REMAIN BELOW SEVERE LIMITS THIS MORNING BUT WILL BE HEAVY
RAIN PRODUCERS. SINCE MANY AREAS NORTH OF INTERSTATE 20 SAW VERY
HEAVY RAIN TUESDAY EVENING...THE ADDITIONAL RAINFALL THIS MORNING
WILL RESULT IN MORE FLOODING. WE HAVE DECIDED TO EXTEND THE FLASH
FLOOD WATCH THROUGH MIDDAY AND EXPAND IT EAST AND SOUTH TO INCLUDE
ALL COUNTIES GENERALLY ALONG AND NORTH OF INTERSTATE 20...
INCLUDING THE DALLAS/FORT WORTH METROPLEX. WE EXPECT THE PRECIPITATION
TO SLOWLY TRANSITION SOUTH THROUGH THE DAY WITH THE COLD FRONT.
THE BEST STORM CHANCES THIS AFTERNOON AND THIS EVENING WILL BE
ACROSS THE SOUTHWEST ZONES AND SOME OF THESE STORMS COULD BECOME
SEVERE WITH A POTENTIAL FOR LARGE HAIL AND DAMAGING WINDS. THERE
WILL EVEN BE AN ISOLATED TORNADO THREAT...ALTHOUGH IT SHOULD BE
LOWER THAN IT WAS TUESDAY AFTERNOON/EVENING. THE ONLY GOOD THING
IS THAT THE HEAVY RAIN THREAT THIS AFTERNOON AND TONIGHT SHOULD BE
ACROSS THE SOUTHERN HALF OF THE AREA WHICH SAW VERY LITTLE RAIN
ON TUESDAY.

PRECIPITATION CHANCES SHOULD DECREASE OVERNIGHT TONIGHT THROUGH
THURSDAY AS THE FRONT SLIDES SOUTH OF THE REGION. HOWEVER...RAIN
AND THUNDERSTORM CHANCES WILL INCREASE AGAIN THURSDAY NIGHT/FRIDAY
AS ANOTHER UPPER LEVEL LOW PRESSURE SYSTEM MOVES EAST FROM
SOUTHERN CALIFORNIA. MOISTURE AND INSTABILITY WILL INCREASE ACROSS
THE REGION AND RESULT IN A VERY WET AND UNSTABLE WEEKEND ACROSS
ALL OF NORTH TEXAS. WE WILL HOLD OFF ON ISSUING A FLASH FLOOD
WATCH FOR NOW SINCE THIS EXPECTED RAIN IS STILL A FEW DAYS AWAY.

PRECIPITATION CHANCES WILL DECREASE FROM WEST TO EAST SUNDAY
NIGHT/MONDAY AS THE UPPER TROUGH AXIS TRANSLATES ACROSS THE
CENTRAL AND SOUTHERN PLAINS.

BRIEF UPPER LEVEL RIDGING IS EXPECTED ON TUESDAY WHICH WILL KEEP
PRECIPITATION CHANCES LOW. HOWEVER...THE NEXT WEATHER MAKER WILL
BE GATHERING STRENGTH OFF THE WEST COAST AND SHOULD BRING MORE
RAIN AND THUNDERSTORMS TO NORTH TEXAS BY THE MIDDLE OF NEXT WEEK.

79

&&

.AVIATION...
/ISSUED 651 PM CDT TUE MAY 19 2015/
SCATTERED STRONG TO SEVERE CONVECTION ONGOING FROM WICHITA FALLS
SOUTHWARD TO COLEMAN TEXAS...WITH ISOLATED CELLS PERSISTING FARTHER
EAST FROM NEAR MINERAL WELLS TO NW OF WACO. FOR NOW...BELIEVE
MOST CONVECTION WILL REMAIN TO THE WEST/NORTHWEST OF THE METROPLEX
TAF SITES...AND HAVE KEPT THUNDER OUT OF THE INITIAL HOURS OF
THESE TAFS. HOWEVER...ENVIRONMENT WILL REMAIN RELATIVELY FAVORABLE
ALONG THE I-35 CORRIDOR THROUGH AT LEAST SUNSET. AS SUCH...MAY
NEED TO ADD VCTS TO AT LEAST THE KFTW...KAFW..AND KDFW TAFS...IF
CURRENT CONVECTION HOLDS TOGETHER.

OTHERWISE...ALL TAFS SHOW A TREND TOWARD MVFR CIGS BY 06Z...AND
EVENTUALLY IFR CIGS BY 10Z AS LOW CLOUDINESS EVOLVES IN MOIST
SOUTHERLY FLOW OVERNIGHT. SHORT-TERM MODEL GUIDANCE SUGGESTS
ANOTHER BAND OF CONVECTION WILL MOVE SOUTHEASTWARD OUT OF OKLAHOMA
AFTER 06Z...WITH THE DECAYING REMNANTS POTENTIALLY AFFECTING THE
METROPLEX BY 10Z. CONFIDENCE IS STILL NOT GREAT ON THE DEVELOPMENT
OF THIS ACTIVITY...BUT HAVE SHOWN AT LEAST VCSH CONDITIONS IN THE
METROPLEX AFTER 10Z. ANY ACTIVITY SHOULD REMAIN NORTH OF
WACO THROUGH 12Z.

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  80  60  68  62  75 /  50  50  30  40  50
WACO, TX              83  61  73  63  79 /  50  50  30  40  50
PARIS, TX             79  62  71  57  70 /  60  50  30  30  50
DENTON, TX            77  58  68  58  73 /  60  40  30  40  50
MCKINNEY, TX          78  61  70  60  74 /  60  50  30  30  50
DALLAS, TX            81  62  68  63  76 /  50  50  30  40  50
TERRELL, TX           82  62  72  62  77 /  50  50  30  30  50
CORSICANA, TX         84  64  73  63  76 /  40  50  30  30  50
TEMPLE, TX            82  66  75  64  79 /  50  50  30  40  40
MINERAL WELLS, TX     74  57  67  59  76 /  50  50  30  50  50

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL NOON CDT TODAY FOR TXZ091>095-100>104.

&&

30/79

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
1256 AM CDT WED MAY 20 2015

TXZ092-200645-
COOKE TX-
1256 AM CDT WED MAY 20 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN COOKE COUNTY UNTIL
145 AM CDT...

AT 1256 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 8
MILES NORTH OF SANGER...MOVING NORTHEAST AT 20 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
GAINESVILLE...LINDSAY...CALLISBURG...LAKE KIOWA...RAY ROBERTS PARK
JOHNSON BRANCH AND VALLEY VIEW.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 483 AND 503.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3342 9694 3343 9733 3354 9739 3374 9718
      3372 9714 3373 9709 3377 9709 3380 9710
      3381 9709 3382 9705 3384 9706 3384 9708
      3386 9706 3384 9705 3385 9701 3389 9698
      3392 9699 3395 9695
TIME...MOT...LOC 0556Z 233DEG 19KT 3348 9719

JLDUNN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
109 AM CDT WED MAY 20 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0105 AM     FLASH FLOOD      5 N KRUM                33.34N  97.25W
05/20/2015                   DENTON             TX   LAW ENFORCEMENT

            SEVERAL ROADS CLOSED AND VEHICLES STRANDED DUE TO HIGH
            WATER NORTH OF KRUM AND WEST OF SANGER

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
110 AM CDT WED MAY 20 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0107 AM     FLASH FLOOD      4 NNE BRIDGEPORT        33.27N  97.74W
05/20/2015                   WISE               TX   TRAINED SPOTTER

            FM1655 HAS WATER FLOWING RAPIDLY OVER THE ROAD 4 MILES
            NNE OF BRIDGEPORT. ROAD CLOSED DUE TO FLOODING.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
119 AM CDT WED MAY 20 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0115 AM     FLASH FLOOD      BRIDGEPORT              33.22N  97.77W
05/20/2015                   WISE               TX   BROADCAST MEDIA

            REPORTS OF WATER IN HOMES AT HIGHWAY 114 AND TURKEY
            CREEK RD. WATER RESCUES WERE PERFORMED.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
149 AM CDT WED MAY 20 2015

TXZ092-200745-
COOKE TX-
149 AM CDT WED MAY 20 2015

...SIGNIFICANT WEATHER ADVISORY FOR COOKE COUNTY UNTIL 245 AM CDT...

AT 149 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
ST. JO...OR 15 MILES SOUTHEAST OF NOCONA...MOVING EAST AT 50 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3395 9695 3342 9694 3343 9748 3392 9748
      3383 9746 3382 9738 3388 9733 3386 9733
      3389 9731 3386 9726 3392 9721 3386 9717
      3376 9719 3372 9711 3382 9705 3385 9709
      3384 9703 3395 9700
TIME...MOT...LOC 0649Z 271DEG 42KT 3368 9749

30

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