Flash Flood Warning 79, NWS Houston/Galveston, TX

688 
WGUS74 KHGX 031946
FFSHGX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
146 PM CST SAT DEC 3 2016

TXC039-167-032115-
/O.CON.KHGX.FF.W.0079.000000T0000Z-161203T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GALVESTON TX-BRAZORIA TX-
146 PM CST SAT DEC 3 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 PM CST FOR
WEST CENTRAL GALVESTON AND EAST CENTRAL BRAZORIA COUNTIES...

AT 144 PM CST...MODERATE TO HEAVY RAINFALL CONTINUED OVER TEXAS
CITY. FLASH FLOODING WAS CONTINUING ACROSS THE WARNED AREA.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
TEXAS CITY...LA MARQUE...SANTA FE...HITCHCOCK AND BAYOU VISTA. 

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 2944 9488 2931 9490 2931 9494 2921 9503
      2918 9510 2919 9514 2921 9518 2933 9512
      2945 9495

$$

40

Area Forecast Discussion
National Weather Service Houston/Galveston TX
1146 AM CST Sat Dec 3 2016

.AVIATION...
The warm front is expected to waffle near the coast. Stronger
storms will be possible in the vicinity of the front and should
mainly affect areas around KGLS.

The band of rain and thunderstorms currently over KGLS will
likely move east of the site by around 1830Z.

Current radar trends indicate a break from the showers over KSGR,
KHOU, and KIAH during the first half of this afternoon. An area of
rain moving over KCLL may spread into KCXO and KUTS during this
period.

For later this afternoon through Sunday morning, tweaked the
timing for thunderstorm chances for most locations. Otherwise,
given the location of the warm front and the approaching upper
low, periods of rain with isolated thunderstorms can be expected.
The location of the warm front will likely lead to IFR for most
sites through the period.

40

&&

.PREV DISCUSSION... /ISSUED 1042 AM CST Sat Dec 3 2016/

DISCUSSION...
Just cosmetic changes to the grids this morning. Warm front is
situated from roughly Smith Point to Texas City to San Luis Pass
to 15NM south of Matagorda Bay. Keeping an eye on this general
vicinity today as it'll be where the heaviest rain threat and
severe wx/tornado threat will be. Guidance suggests this boundary
will sag southward and offshore later this afternoon which would
be good news (unless you're a mariner/rig worker).

Elsewhere...periods of light-moderate stratiform rain are
expected. Swath of precip across northern parts of the CWA has
produced 1-4" totals. Even with these totals well inland...think
additional steady light/moderate rain can be handled in the next
12-18 hours. Problems will occur under training heavier bursts of
precip - which are difficult to pinpoint exactly where that'll be.
Hence, will leave Flash Flood Watch going everywhere. But, in the
short term during the day, primary issues and focus area will
likely be across se & coastal parts of the region.

No changes to Coastal Flood Advsy. Seas/tides remain up...

47

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      53  48  54  50  60 / 100 100  90  70  70
Houston (IAH)              59  54  59  54  65 / 100 100 100  90  90
Galveston (GLS)            70  65  67  61  69 / 100 100 100 100  90

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...Flash Flood Watch through Sunday evening for the following
     zones: Austin...Brazoria...Brazos...Burleson...Chambers...
     Colorado...Fort Bend...Galveston...Grimes...Harris...
     Houston...Jackson...Liberty...Madison...Matagorda...
     Montgomery...Polk...San Jacinto...Trinity...Walker...
     Waller...Washington...Wharton.

     Coastal Flood Advisory until 3 AM CST Sunday for the following
     zones: Brazoria...Chambers...Galveston...Harris.

GM...SMALL CRAFT SHOULD EXERCISE CAUTION until noon CST today for the
     following zones: Matagorda Bay.

     Small Craft Advisory until 6 PM CST this evening for the
     following zones: Coastal waters from Freeport to the
     Matagorda Ship Channel out 20 NM...Coastal waters from High
     Island to Freeport out 20 NM...Galveston Bay...Waters from
     Freeport to the Matagorda Ship Channel from 20 to 60 NM...
     Waters from High Island to Freeport from 20 to 60 NM.

&&

Discussion...47
Aviation/Marine...40

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
623 AM CST SAT DEC 3 2016

TXZ163-164-176>179-195>200-210>214-226-227-235>238-041230-
AUSTIN-BRAZORIA-BRAZOS-BURLESON-CHAMBERS-COLORADO-FORT BEND-
GALVESTON-GRIMES-HARRIS-HOUSTON-JACKSON-LIBERTY-MADISON-MATAGORDA-
MONTGOMERY-POLK-SAN JACINTO-TRINITY-WALKER-WALLER-WASHINGTON-
WHARTON-
623 AM CST SAT DEC 3 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT

FLASH FLOOD WATCH IN EFFECT FOR ALL OF SOUTHEAST TEXAS AND A
COASTAL FLOOD ADVISORY IN EFFECT FOR PORTIONS OF THE COAST.

WIDESPREAD RAINFALL OVERNIGHT OF 0.25 TO 3 INCHES BEGINNING THE
PROCESS OF SATURATING THE SOILS ACROSS THE REGION. UNUSUALLY
MOISTURE RICH AIR FOR DECEMBER FLOWING INTO THE REGION WILL
INTERACT WITH A STATIONARY FRONT NEAR THE UPPER TEXAS COAST TODAY.
A SLOW MOVING UPPER LEVEL LOW PRESSURE SYSTEM MOVING INTO AND THEN
THROUGH THE STATE WILL PROVIDE ABUNDANT LIFT TO THE SATURATED
AIRMASS LEADING TO PERIODS OF RAIN MIXED WITH BANDS OR CLUSTERS OF
SHOWERS AND THUNDERSTORMS. THE STEADY LIGHT RAIN SHOULD NOT POSE
A THREAT OF FLOODING BUT THE BANDS THAT FORM MAY PERSIST OVER THE
SAME AREAS INCREASING THE FLOOD THREAT. THESE SHOWERS AND
THUNDERSTORMS WILL BE CAPABLE OF HEAVY RAINFALL. HEAVY OR INTENSE
RAINFALL WILL LIKELY LEAD TO SHORT PERIODS OF STREET FLOODING AND
FLOODING OF LOW LYING AREAS. THIS WILL BE A WEEKEND LONG EVENT SO
RAIN WILL NOT FALL ALL AT ONCE WITH TIME FOR STREETS AND CREEKS TO
DRAIN BEFORE THE NEXT ROUND OF RAIN RETURNS. WIDESPREAD RAINFALL
OF 1 TO 3 INCHES WITH THE POSSIBILITY OF BANDS OF 5 TO 7 INCHES
WITH SOME ISOLATED PLACES RECEIVING 8 TO 11 INCHES. ROAD PONDING
AND STREET FLOODING SHOULD BE THE MAIN HEAVY RAIN THREATS TODAY.
ELEVATED TIDE AND THE HEAVY RAINFALL MAY COAST COASTAL FLOODING
MAINLY FROM THE FREEPORT AREA UP THROUGH GALVESTON BAY AND TO HIGH
ISLAND.

AS THE WARM FRONT CREEPS INLAND TODAY ISOLATED BRIEF TORNADOES
WILL BE POSSIBLE IN THE COASTAL COUNTIES. THESE SHOULD BE SHORT
LIVED. THE TORNADO THREAT SHOULD DIMINISH LATE THIS AFTERNOON.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

ON SUNDAY AS THE UPPER LOW PRESSURE SYSTEM MOVES EAST THE THREAT
FOR HEAVY RAINFALL ACROSS SOUTHEAST TEXAS SHOULD BEGIN TO SHIFT
SOUTHWARD THROUGHOUT THE DAY. THE HEAVIER RAINFALL AMOUNTS SHOULD
BE SOUTH OF A COLUMBUS TO CONROE TO LIVINGSTON LINE. THE THREAT
FOR FLASH FLOODING WILL CONTINUE AND RIVER...STREAMS AND BAYOUS
MAY BE MORE LIKELY TO BECOME INVOLVED AFTER SATURDAYS HEAVY RAINS.
THE FRONT SHOULD MOVE BACK OFFSHORE AND THE THREAT OF TORNADOES
SHOULD DIMINISH. WATERSPOUTS WILL STILL BE POSSIBLE IN THE COASTAL
WATERS. DURING THE DAY MONDAY A PACIFIC COLD FRONT SHOULD SWEEP
THROUGH SOUTHEAST TEXAS BRINGING ONE LAST GASP OF HEAVY RAINFALL
AND A POSSIBILITY AGAIN OF SEVERE THUNDERSTORMS MAINLY ALONG AND
EAST OF AN ANGLETON TO HUNTSVILLE LINE. THE FLASH FLOOD WATCH MAY
NEED TO BE EXTENDED INTO MONDAY.

A STRONG COLD FRONT SWEEPS THROUGH THE REGION LATE WEDNESDAY AND
MUCH COLDER TEMPERATURES WILL OCCUR. THE FIRST FREEZE OF THE
SEASON MAY DEVELOP FRIDAY MORNING.

.SPOTTER INFORMATION STATEMENT...
HEIGHTENED SPOTTER AWARENESS OVER THE NEXT SEVERAL DAYS.

GMZ330-335-350-355-370-375-041230-
COASTAL WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL OUT
20 NM-COASTAL WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM-
GALVESTON BAY-MATAGORDA BAY-
WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL FROM 20 TO
60 NM-WATERS FROM HIGH ISLAND TO FREEPORT FROM 20 TO 60 NM-
623 AM CST SAT DEC 3 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT
COASTAL FLOOD ADVISORY IN EFFECT AND STRONG TO SEVERE
THUNDERSTORMS POSSIBLE TODAY. MODERATE EAST WINDS WITH HAZARDOUS
SEAS OF 5 TO 9 FEET WILL CONTINUE TODAY. WATER LEVELS OF BETWEEN
3 TO NEAR 4 FEET...ALONG WITH AN EASTERLY FETCH PULLING IN A
LONG PERIOD SWELL...WILL CONTINUE TO FLOOD BEACHES WITH ELEVATED
TIDE LEVELS ALONG THE BEACHES AND SHORE WITH IMPACTS ALONG HIGHWAY
87 AND THE BLUE WATER HIGHWAY. LOW LYING ROADS NEAR GALVESTON BAY
MAY ALSO FLOOD DURING THE HOURS AROUND HIGH TIDE. ACROSS THE GULF
WATERS AND POSSIBLY INTO THE BAYS STRONG TO SEVERE THUNDERSTORMS
WILL BE POSSIBLE MAINLY IN THE FORM OF WATERSPOUTS. THE STORMS
WILL BE FAST MOVING AND THE WATERSPOUTS MAY BE LONGER LIVED. HEAVY
DOWNPOURS WILL REDUCE VISIBILITY TO LESS THAN 1 MILE AT TIMES AS
WELL.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS THROUGHOUT THE DAY
SUNDAY WILL BRING HEAVY RAINFALL WITH REDUCED VISIBILITY AND
POSSIBLY STRONG TO SEVERE THUNDERSTORMS. ELEVATED TIDE LEVELS
SUNDAY SHOULD DIMINISH MONDAY AS WINDS BECOME MORE WEST AND
NORTHWESTERLY IN THE WAKE OF A COLD FRONT. ANOTHER STRONGER COLD
FRONT ARRIVES LATE WEDNESDAY OR EARLY THURSDAY BRINGING STRONG
GUSTY NORTHERLY WINDS.

.SPOTTER INFORMATION STATEMENT...
HEIGHTENED MARINE SPOTTER AWARENESS OVER THE NEXT SEVERAL DAYS.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
937 AM CST SAT DEC 3 2016

TXZ214-238-031615-
GALVESTON TX-CHAMBERS TX-
937 AM CST SAT DEC 3 2016

...STRONG THUNDERSTORMS ACROSS NORTHEASTERN GALVESTON AND EASTERN
CHAMBERS COUNTIES THROUGH 1015 AM CST...

AT 937 AM CST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR ROLLOVER PASS...OR 20 MILES SOUTHEAST OF BEACH CITY...MOVING
NORTHEAST AT 55 MPH.

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

LOCATIONS IMPACTED INCLUDE...
STOWELL...WINNIE AND BOLIVAR PENINSULA.

LAT...LON 2947 9456 2954 9469 2989 9442 2989 9436
      2961 9436
TIME...MOT...LOC 1537Z 214DEG 48KT 2956 9457

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
945 AM CST SAT DEC 03 2016

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

0929 AM     MARINE TSTM WIND 19 E SAN LEON           29.47N  94.62W
12/03/2016  M42 MPH          GALVESTON          TX   MESONET

            MARINE THUNDERSTORM WIND GUST OF 42 MPH AT CRAB LAKE
            XCRB VIA WEATHERFLOW

&&

EVENT NUMBER HGX1600282

MM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1058 AM CST SAT DEC 03 2016

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

1035 AM     MARINE TSTM WIND 4 ENE TEXAS CITY        29.42N  94.89W
12/03/2016  M39 MPH          GALVESTON          TX   MESONET

            A MARINE THUNDERSTORM WIND GUST OF 39MPH WAS OBSERVED
            AT THE TEXAS CITY LEVEE VIA WEATHERFLOW

&&

EVENT NUMBER HGX1600283

MM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1128 AM CST SAT DEC 03 2016

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

1119 AM     MARINE TSTM WIND 19 E SAN LEON           29.47N  94.62W
12/03/2016  M42 MPH          GALVESTON          TX   MESONET

            MARINE THUNDERSTORM WIND GUST OF 42 MPH OBSERVED AT
            CRAB LAKE XCRB VIA WEATHERFLOW

&&

EVENT NUMBER HGX1600284

MM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1220 PM CST SAT DEC 03 2016

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

1140 AM     MARINE TSTM WIND 19 E SAN LEON           29.47N  94.62W
12/03/2016  M45 MPH          GALVESTON          TX   MESONET

            A MARINE THUNDERSTORM WIND GUST OF 39 KTS AT CRAB LAKE
            VIA WEATHERFLOW.

&&

EVENT NUMBER HGX1600285

NH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
113 PM CST SAT DEC 03 2016

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

0111 PM     FLASH FLOOD      TEXAS CITY              29.41N  94.96W
12/03/2016                   GALVESTON          TX   EMERGENCY MNGR

            WIDESPREAD STREET FLOODING... WATER NEAR HOMES.

&&

EVENT NUMBER HGX1600286

NH