Flash Flood Warning 208, NWS Fort Worth, TX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FORT WORTH TX
317 PM CDT FRI OCT 30 2015

.DISCUSSION...
A POWERFUL UPPER LOW WILL CONTINUE TO ROTATE ACROSS THE
ARIZONA/NEW MEXICO BORDER THIS AFTERNOON. NUMEROUS SHOWERS AND
THUNDERSTORMS WILL MOVE NORTHEAST ACROSS NORTH TEXAS THROUGH LATE
AFTERNOON AND INTO THE EVENING WITH THE STRONGEST STORMS REMAINING
NEAR A WARM FRONT ACROSS THE SOUTHERN ZONES. THE STORMS NEAR THE
WARM FRONT WILL HAVE AMPLE SHEAR AND MODERATE INSTABILITY AND BE
CAPABLE OF PRODUCING DAMAGING WINDS...MARGINALLY SEVERE HAIL AND
EVEN A BRIEF TORNADO OR TWO. THEREFORE...A TORNADO WATCH IS IN
EFFECT UNTIL 7 PM ALONG AND SOUTH OF A LINE FROM WACO TO CENTERVILLE.

THE STORMS NEAR AND JUST NORTH OF THE WARM FRONT WILL ALSO BE
EFFICIENT RAIN PRODUCERS AND WILL HAVE THE POTENTIAL TO PRODUCE
SOME FLASH FLOODING. THEREFORE...WE WILL ISSUE A FLASH FLOOD WATCH
FOR LOCATIONS ALONG AND SOUTH OF A LINE FROM KILLEEN TO WACO TO
CORSICANA TO ATHENS FROM THIS AFTERNOON UNTIL NOON SATURDAY.
ALTHOUGH RAINFALL AMOUNTS IN THE WATCH AREA SHOULD STAY BETWEEN
ONE AND THREE INCHES. EVEN AMOUNTS IN THIS RANGE COULD RESULT IN
FLOODING ISSUES DUE TO RECENT HEAVY RAINFALL AND ALREADY SATURATED
SOILS.

FARTHER NORTH...LOW LEVEL INSTABILITY WILL REMAIN WEAK AND STORMS
THROUGH TONIGHT WILL REMAIN ELEVATED AND GENERALLY BELOW SEVERE
LIMITS. HOWEVER...CLOUD TO GROUND LIGHTNING...SOME HEAVY RAINFALL
AND LOCALIZED FLOODING WILL BE POSSIBLE.

MODELS HAVE BEEN FAIRLY CONSISTENT IN ENDING PRECIPITATION QUICKLY
AFTER SUNRISE SATURDAY WITH ONLY SOME LINGERING SHOWERS AND A FEW
STORMS IN THE EAST SATURDAY AFTERNOON. THE REASON THE PRECIP WILL
END QUICKLY ON SATURDAY WILL BE AN INTRUSION OF ELEVATED DRY AIR
FROM THE SOUTHWEST (DRY SLOT) AND THE PASSAGE OF A COLD FRONT
WHICH WILL DRY AND COOL THE LOW LEVEL OF THE ATMOSPHERE. THIS DRY
AIR WILL REMAIN IN PLACE SATURDAY NIGHT AND RESULT IN LOW
TEMPERATURES SUNDAY MORNING IN THE 40S AND 50S.

THERE IS A BIT OF MODEL DISCREPANCY WITH REGARDS TO SUNDAY. THE
LATEST RUN OF THE GFS SLOWLY TRANSLATES THE UPPER LOW ACROSS NORTH
TEXAS AND WRAPS SOME ELEVATED MOISTURE AROUND IT AND PRODUCES
SHOWERS AND THUNDERSTORMS GENERALLY NORTH OF INTERSTATE 20. THE
CANADIAN SOLUTION ALSO SHOWS A SIMILAR SCENARIO BUT WITH LIGHTER
PRECIP AMOUNTS DISPLACED FARTHER SOUTH. THE OTHER MODELS ARE
FASTER IN LIFTING THE UPPER LOW TO THE CENTRAL PLAINS AND KEEP ALL
ASSOCIATED PRECIPITATION EAST OF THE CWA. FOR NOW WE WILL BUMP
POPS UP TO 20 PERCENT ON SUNDAY MAINLY NORTH OF INTESTATE 20.
ANY PRECIPITATION THAT DOES DEVELOP SHOULD MOVE EAST OF THE
REGION BY SUNDAY EVENING WITH THE DEPARTING UPPER LOW.

BRIEF RIDGING ALOFT IS EXPECTED TO START THE WORK WEEK BUT THIS
RIDGE WILL BE VERY TEMPORARY AS THE NEXT UPPER TROUGH DEEPENS
ACROSS THE WESTERN STATES. LOW LEVEL MOISTURE WILL BE ON THE
INCREASE BEGINNING TUESDAY AS SURFACE CYCLOGENESIS TAKES PLACE
ACROSS THE CENTRAL HIGH PLAINS. LARGE SCALE LIFT WILL SET UP
ACROSS THE REGION BY TUESDAY NIGHT WITH RAIN/STORM CHANCES
INCREASING WEDNESDAY AND CONTINUING THROUGH FRIDAY. AS OF NOW...IT
APPEARS THAT THE RAIN SHOULD END SOMETIME ON FRIDAY WITH DRY
WEATHER EXPECTED NEXT FRIDAY NIGHT THROUGH SUNDAY.

79

&&

.AVIATION...
/ISSUED 1252 PM CDT FRI OCT 30 2015/
/18Z TAFS/

WIDESPREAD RAINFALL WILL CONTINUE TO IMPACT ALL OF THE MAJOR
AIRPORTS THROUGH THIS EVENING...WITH MINOR DIFFERENCES IN TIMING
AND INTENSITY. RIGHT NOW...HEAVIEST OF THE RAIN HAS JUST MOVED
EAST OF THE WACO AREA AND THEY SHOULD SEE A LITTLE LULL IN THE
ACTIVITY. WILL PREVAIL -RA AND MVFR CIGS THROUGH THE NEXT FEW
HOURS. IN THE METROPLEX...THERE HAS BEEN AN UPTICK IN THE RAIN
OVER THE LAST HOUR BUT GENERALLY MVFR CONDITIONS WILL PREVAIL IN
-RA. OVER THE NEXT SEVERAL HOURS...SCATTERED SHOWERS AND A FEW
THUNDERSTORMS WILL MOVE EAST AND AFFECT MOST OF THE AREA. WILL
HAVE THE BEST TIMING FROM 21-01Z OR 5 TO 9 PM. SOME TEMPO IFR
CONDITIONS POSSIBLE IN HEAVY RAIN. RAIN SHOULD TAPER OFF TONIGHT
AS THE COLD FRONT APPROACHES BUT IFR CIGS REMAIN LIKELY AFTER
MIDNIGHT. WINDS WILL SHIFT AROUND TO THE NORTHWEST TOMORROW
MORNING WITH GRADUAL IMPROVEMENT IN CIGS THROUGH THE DAY.

DUNN

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  64  74  55  73  53 /  90  30  10  20   5
WACO, TX              64  77  54  74  50 /  90  40  10  10   5
PARIS, TX             61  72  55  69  52 /  90  70  10  20  10
DENTON, TX            61  72  51  73  50 /  90  30  10  20   5
MCKINNEY, TX          63  73  53  72  51 /  90  30  10  20   5
DALLAS, TX            65  74  56  73  55 /  90  30  10  20   5
TERRELL, TX           64  75  55  71  52 /  90  50  10  20  10
CORSICANA, TX         65  77  57  73  54 /  90  60  10  10  10
TEMPLE, TX            65  77  54  75  51 /  90  40  10  10   5
MINERAL WELLS, TX     59  71  49  75  48 /  80  20  10  10   5

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THROUGH SATURDAY MORNING FOR TXZ135-146>148-
158>162-174-175.

&&

91/79

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
330 AM CDT FRI OCT 30 2015

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-311100-
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-
330 AM CDT FRI OCT 30 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT.
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED
ACROSS ALL OF NORTH TEXAS THROUGH TONIGHT. WIDESPREAD RAINFALL
AMOUNTS OF 1 TO 3 INCHES CAN BE EXPECTED. A FEW STORMS MAY BE
CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS MAINLY
SOUTHWEST OF A CISCO TO CENTERVILLE LINE. GIVEN THE STRONG
VERTICAL WIND SHEAR...A FEW TORNADOES WILL ALSO BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.
SCATTERED THUNDERSTORMS WILL END FROM WEST TO EAST SATURDAY
AFTERNOON THROUGH SATURDAY NIGHT.

THUNDERSTORM CHANCES WILL RETURN TO ALL OF NORTH TEXAS WEDNESDAY
AND CONTINUE THROUGH THURSDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUESTED THIS AFTERNOON AND EVENING
MAINLY SOUTHWEST OF A CISCO TO CENTERVILLE LINE.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
1213 PM CDT FRI OCT 30 2015

TXZ174-301800-
MILAM TX-
1213 PM CDT FRI OCT 30 2015

...SIGNIFICANT WEATHER ADVISORY FOR MILAM COUNTY UNTIL 100 PM CDT...

AT 1213 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
OVER ROCKDALE...MOVING NORTHEAST AT 40 MPH.

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

LOCATIONS IMPACTED INCLUDE...
ROCKDALE...CAMERON...THORNDALE AND MILANO.

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.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT FOR CENTRAL TEXAS.

LAT...LON 3067 9724 3100 9675 3097 9677 3093 9676
      3092 9673 3090 9672 3091 9669 3087 9670
      3081 9664 3078 9665 3078 9663 3074 9663
      3073 9662 3046 9715
TIME...MOT...LOC 1713Z 236DEG 35KT 3061 9701

30

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
233 PM CDT FRI OCT 30 2015

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

0225 PM     FLASH FLOOD      4 SE LITTLE RIVER-ACADEMY 30.94N  97.32W
10/30/2015                   BELL               TX   TRAINED SPOTTER

            REPORT OF 1-2 FEET OF FAST MOVING WATER AT REEDS ROAD
            AND LOOP 363...4 MILES SE OF LITTLE RIVER-ACADEMY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
335 PM CDT FRI OCT 30 2015

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

0325 PM     FLASH FLOOD      2 W TEMPLE              31.10N  97.38W
10/30/2015                   BELL               TX   EMERGENCY MNGR

            NUMEROUS STREETS AND UNDERPASSES FLOODED WITH SOME FLOODING OF
            HOMES 2 MILES WEST OF TEMPLE.