Flash Flood Warning 11, NWS Fort Worth, TX

906 
WGUS74 KFWD 111219
FFSFWD

Flash Flood Statement
National Weather Service Fort Worth TX
719 AM CDT TUE APR 11 2017

TXC027-099-111315-
/O.CON.KFWD.FF.W.0011.000000T0000Z-170411T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Coryell TX-Bell TX-
719 AM CDT TUE APR 11 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 AM CDT FOR
SOUTHERN CORYELL AND BELL COUNTIES...

At 719 AM CDT, Doppler radar indicated moderate to heavy rain was 
falling across parts of northern and eastern Bell County. This rain 
in addition to the 2 to over 5 inches of rain that has already 
fallen, will result in continued flash flooding across Bell County.
Another area of showers and thunderstorms is expected to move across 
Coryell County which will likely not allow water levels to fall 
there.

Some locations that will experience flooding include... Killeen, 
Temple, Copperas Cove, Harker Heights, Belton, Gatesville, McGregor, 
Fort Hood, Nolanville, Morgan's Point Resort, Salado, Little River-
Academy, Troy, Mother Neff State Park, Fort Gates, Oglesby and South 
Mountain.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3106 9792 3107 9791 3127 9804 3149 9753
      3132 9742 3124 9734 3128 9727 3100 9708
      3093 9744 3092 9783

$$

58

001 
WGUS54 KFWD 111313
FFWFWD
TXC027-099-111645-
/O.EXT.KFWD.FF.W.0011.000000T0000Z-170411T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Fort Worth TX
813 AM CDT TUE APR 11 2017

The National Weather Service in Fort Worth has extended the

* Flash Flood Warning for...
  Southern Coryell County in central Texas...
  Bell County in central Texas...

* Until 1145 AM CDT.

* At 813 AM CDT, Doppler radar indicated heavy rain falling across 
  parts of southern Coryell and northern Bell Counties.  Rain gauges 
  have recorded 3 to over 8 inches of rain across the warned area. 
  The Bell County Sheriff's Office reported that over 20 roads were 
  flooded across the county.  The Coryell County Sheriff's Office 
  reported that CR 142 near Pidcoke was flooded. 

Some locations that will experience flooding include...
Killeen, Temple, Copperas   Cove, Harker Heights, Belton, 
Gatesville, McGregor, Fort Hood,  Nolanville, Morgan's Point Resort, 
Salado, Little River-Academy,   Troy, Mother Neff State Park, Fort 
Gates, Oglesby and South   Mountain.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3106 9792 3107 9791 3127 9804 3149 9753
      3132 9742 3124 9734 3128 9727 3100 9708
      3093 9744 3092 9783

$$

58

Area Forecast Discussion
National Weather Service Fort Worth TX
500 AM CDT Tue Apr 11 2017

.DISCUSSION...
A nearly stationary frontal boundary has kept the juiciest air
confined to areas east of I-35 and south of I-20. Persistent
convection within the warm sector has neither successfully
developed a cold pool nor completely exhausted the instability.
Even at this hour, MLCAPE values near the severe thunderstorm in
Bell County are around 1000 J/kg. This deep convection is also
benefiting from another slug of forcing aloft that will sweep
across Central Texas through daybreak. This will maintain a
marginally severe hail threat through the termination of the
severe thunderstorm watch at 7 am.

Rich 850mb flow is continuously supplying the ongoing convection
with more fuel. This deep moisture has resulted in some
extraordinary rainfall rates, and the flooding threat will
continue through daybreak, particularly where additional cells
track over areas that have already seen heavy rainfall during this
event. The flash flood watch remains in effect through 7 am though
the western extent is already seeing the heavy rain potential
diminish. After 7 am, drying westerly flow will ensure within the
850-700mb layer as the current impulse passes to the east. This
should end the heavy rain threat though runoff may continue to
cause flooding impacts throughout the morning commute.

Although there is little warm advection or moisture flux across
the surface boundary, there remains considerable elevated
instability above the frontal layer. This was realized across
North Central Texas during the early morning hours in vicinity of
the 850mb front. The steep mid-level lapse rates helped maintain
hailcores, but the forcing that helped overcome minimal storm-
relative flow at the base of these updrafts has now passed to the
east. As a result, the overnight storms that tormented the
Metroplex have come to an end, and little if any additional
convection is expected that deep into the cool air the remainder
of the day.

25

&&

.AVIATION...
/09Z TAFs/

A frontal boundary is south of the I-20 corridor, but a
thunderstorm-disrupted wind field has made it difficult to discern
its precise location. The Metroplex will remain well north of the
boundary, and north flow will prevail through the daylight hours
today. In Central Texas, thunderstorms will maintain the chaotic
wind field through daybreak.

The elevated convection within the Metroplex has come to an end.
Ongoing activity near the frontal boundary will persist during the
predawn hours, impacting Waco through daybreak.

Guidance continues to believe ceilings should fall into the MVFR
category in the Metroplex, but with the frontal boundary being
nearly stationary and even higher VFR ceilings deeper into the
cool air, the MVFR ceilings now impacting the eastern half of the
Metroplex are unlikely to stick around. However, Waco will be
close enough to the surface front that MVFR ceilings are expected
to persist much of the morning.

Winds will veer north of the front today, and by tonight, light
easterly surface flow will prevail. This should result in a
deterioration of both ceilings and visibility, which is reflected
in the Waco TAF and the extended portion of the DFW TAF.

25

&&

.PRELIMINARY POINT TEMPS/POPS...
Dallas-Ft. Worth    73  61  78  63  79 /  20  10  20  10  20
Waco                74  61  80  61  79 /  50  10  20  10  20
Paris               70  59  76  60  78 /  30  10  20  10  20
Denton              73  58  78  61  78 /  20   5  20  10  20
McKinney            72  58  77  60  79 /  20  10  20  10  20
Dallas              74  62  79  64  80 /  20  10  20  10  20
Terrell             73  60  79  63  80 /  30  10  20  10  10
Corsicana           73  62  79  62  79 /  40  10  20  10  10
Temple              73  62  79  61  79 /  60  10  20  10  20
Mineral Wells       74  57  78  61  78 /  10   5  20  20  20

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch until 7 AM CDT this morning for TXZ135-142>148-
156>162-174-175.

&&

25/25

Hazardous Weather Outlook
National Weather Service Fort Worth TX
1140 PM CDT Mon Apr 10 2017

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-111200-
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-
1140 PM CDT Mon Apr 10 2017

This Hazardous Weather Outlook is for North and Central Texas.

.DAY ONE...Tonight.
There is a chance of thunderstorms across all of North and Central
Texas through the night. Severe thunderstorms are possible, but most
likely south of a line from Goldthwaite to Hillsboro to Athens.
Large hail and damaging winds are the primary hazards. Heavy
rainfall is also likely in the most favored severe weather area which
may result in flash flooding. Therefore, a Flash Flood Watch is in
effect until 7 AM. Locations north of a Goldthwaite to Hillsboro to
Athens line may see hail near or slightly larger than the size of
quarters.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Scattered thunderstorms will be possible Tuesday southeast of a line
from Bonham to Weatherford to Comanche. Severe storms are not
expected.

Isolated to scattered thunderstorms will be possible, periodically,
across much of the region Tuesday night through Friday. Cloud to
ground lightning will be the primary hazard. Severe weather appears
unlikely at this time.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is possible through the night but especially
southeast of a line from Goldthwaite to Hillsboro to Athens.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
339 AM CDT TUE APR 11 2017

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

0325 AM     HAIL             NORTH RICHLAND HILLS    32.83N  97.25W
04/11/2017  E0.75 INCH       TARRANT            TX   NWS EMPLOYEE

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
341 AM CDT TUE APR 11 2017

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

0328 AM     HAIL             NORTH RICHLAND HILLS    32.83N  97.25W
04/11/2017  E1.00 INCH       TARRANT            TX   PUBLIC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
414 AM CDT TUE APR 11 2017

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

0409 AM     HAIL             KILLEEN                 31.13N  97.73W
04/11/2017  E1.00 INCH       BELL               TX   PUBLIC

            NEAR THE INTERSECTION OF 190 AND 195

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
431 AM CDT TUE APR 11 2017

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

0210 AM     HAIL             MCKINNEY                33.20N  96.62W
04/11/2017  E0.75 INCH       COLLIN             TX   PUBLIC

            PENNY SIZE HAIL REPORT IN MCKINNEY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
437 AM CDT TUE APR 11 2017

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

0330 PM     HAIL             CLLEBURNE               32.35N  97.40W
04/10/2017  E1.25 INCH       JOHNSON            TX   PUBLIC

            DELAYED REPORT: HALF DOLLAR SIZE HAIL REPORTED IN CLEBURNE VIA SOCIAL
            MEDIA

Special Weather Statement
National Weather Service Fort Worth TX
456 AM CDT TUE APR 11 2017

TXZ133-111030-
Johnson TX-
456 AM CDT TUE APR 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL JOHNSON COUNTY UNTIL 530
AM CDT...

At 456 AM CDT, Doppler radar was tracking a strong thunderstorm near
Cleburne State Park, or 8 miles southwest of Cleburne, moving
northeast at 20 mph.

Penny size hail will be possible with this storm.

Locations impacted include...
Cleburne, Keene, Cleburne State Park and Rio Vista.

LAT...LON 3245 9728 3225 9719 3219 9750 3228 9759
TIME...MOT...LOC 0956Z 245DEG 19KT 3225 9749

58