Severe Thunderstorm Warning 35, NWS Houston/Galveston, TX

978 
WWUS54 KHGX 300111
SVSHGX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
811 PM CDT FRI APR 29 2016

TXC225-455-300145-
/O.CON.KHGX.SV.W.0035.000000T0000Z-160430T0145Z/
HOUSTON TX-TRINITY TX-
811 PM CDT FRI APR 29 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR NORTHEASTERN HOUSTON AND NORTHEASTERN TRINITY COUNTIES...

AT 811 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR FOREST...OR 14
MILES NORTH OF APPLE SPRINGS...MOVING NORTHEAST AT 35 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
KENNARD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.

&&

LAT...LON 3156 9514 3154 9514 3152 9510 3150 9509
      3149 9511 3147 9510 3147 9506 3144 9504
      3144 9501 3142 9500 3141 9498 3141 9497
      3138 9495 3134 9496 3133 9490 3130 9489
      3129 9488 3126 9503 3140 9528 3158 9516
TIME...MOT...LOC 0111Z 238DEG 32KT 3143 9502 

HAIL...1.00IN
WIND...60MPH
 
$$

40

205 
WWUS54 KHGX 300135
SVSHGX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
835 PM CDT FRI APR 29 2016

TXC225-455-300145-
/O.EXP.KHGX.SV.W.0035.000000T0000Z-160430T0145Z/
HOUSTON TX-TRINITY TX-
835 PM CDT FRI APR 29 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HOUSTON AND
NORTHEASTERN TRINITY COUNTIES WILL EXPIRE AT 845 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3156 9514 3154 9514 3152 9510 3150 9509
      3149 9511 3147 9510 3147 9506 3144 9504
      3144 9501 3142 9500 3141 9498 3141 9497
      3138 9495 3134 9496 3133 9490 3130 9489
      3129 9488 3126 9503 3140 9528 3158 9516
TIME...MOT...LOC 0133Z 236DEG 39KT 3143 9502 

$$

40

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
637 PM CDT FRI APR 29 2016

.AVIATION...
LOW TO MODERATE CONFIDENCE FORECAST. MOISTURE AXIS FROM MATAGORDA
BAY TO KCLL TO MADISON COUNTY SHOULD SLOWLY MOVE EASTWARD THROUGH
THE NIGHT. SHOWERS AND THUNDERSTORMS WERE DEVELOPING WITHIN THE
MOIST AXIS. MODEL SOLUTIONS DIFFERED...HOWEVER THERE WAS ENOUGH
CONSENSUS BETWEEN THE GFS/NAM12/RAP13 TO TRY AND TIME THE EVENT
TONIGHT AND SATURDAY. TERMINALS WERE BASED ON THE NAM12 AND RAP13
AND THE PREVIOUS PACKAGE.

40

&&

.PREV DISCUSSION... /ISSUED 341 PM CDT FRI APR 29 2016/

DISCUSSION...
..FLASH FLOOD WATCH EXPANDED IN AREA TO INCLUDE LIBERTY/CHAMBERS
GALVESTON/BRAZORIA COUNTIES. SEVERE THREAT SLIGHT TO ENHANCED
ACROSS THE REGION THIS AFTERNOON AND TONIGHT...

INGREDIENTS ALL IN PLACE NOW ACROSS THE REGION. PW 1.25-1.5 AND
CLIMBING. TEMPERATURES HAVE SOARED TO 85-88 DEGREES ACROSS THE
NORTH AND WINDS HAVE BEGUN TO INCREASE AND GET GUSTY. SETX IS
GOING TO BE UNDER THE GUN TONIGHT FOR SEVERE AND VERY HEAVY
RAINFALL.

SEVERE POTENTIAL SHOULD START OUT AS TORNADO/HAIL THREAT IN THE
WEST AND THEN SHIFT EASTWARD THROUGHOUT THE EVENING. AS WE GET
INTO THE EVENING THE THREAT SHOULD ALSO INCLUDE DAMAGING WINDS
ACROSS THE REGION...WET GROUND WILL ALLOW FOR TREE FALL AT LOWER
WIND SPEEDS THAN NORMAL.

FLOODING THREAT FOR MANY RUNS OF THE HRRR/NAM POINT TO AN EAST
WEST BOUNDARY ACROSS SETX...LOCATION MAY BE WELL NORTH OF THE
HOUSTON METRO AREA OR FURTHER SOUTH INTO THE METRO AREA. THIS
COULD BE A VERY DANGEROUS SITUATION IF THIS SETS UP ALONG THE
SPRING CREEK TO I-10 CORRIDOR. RAINFALL RATES OF 2-4 INCHES WILL
BE EASY TO ACHIEVE IN THIS PRECIPITATION EFFICIENT ENVIRONMENT
GIVEN THE VERY STRONG LL INFLOW AND LL SATURATION. EVENTUALLY
THIS STORM COMPLEX SLIDES EAST AND SHOULD BE MOVING OUT OF THE
AREA AROUND NOON SATURDAY OR PERHAPS EARLIER IF THE COLD POOL CAN
GET MORE DOMINANT BUT THROUGH 3 AM THIS SEEMS UNLIKELY THAT IT
COULD SURGE EAST OUT OF THE REGION. THE COLD FRONT PUSHES DOWN
ACROSS THE AREA LATE SATURDAY AND BRINGS IN DRYING AT LEAST OVER
THE NW 2/3RDS OF THE AREA.

BEYOND SATURDAY THE STATIONARY BOUNDARY REMAINS IN PLAY ACROSS
THE SOUTHERN PORTIONS OF THE AREA OR NEARSHORE WATERS AND THEN AS
NEXT TROUGH DROPS IN OVER THE WESTERN U.S. THE FRONT ACTIVATES
AGAIN SUNDAY AND PROBABLY MORE LIKELY MONDAY AND TUESDAY AS NEXT
UPPER LOW EJECTS OUT OF THE MEAN UPPER TROUGH. THE 'GOOD' NEWS IS
THAT STRONG LL INFLOW IS NOT NEARLY AS STRONG WITH THE SUNDAY-
TUESDAY TIMEFRAME SO STORMS WILL PROBABLY MORE SCATTERED AND NOT
AS FOCUSED.

PERSONS ACROSS SETX LATE THIS AFTERNOON AND OVERNIGHT SHOULD BE
PREPARED FOR A VERY ROUGH NIGHT OF WEATHER.

45

MARINE...
MODERATE TO STRONG ONSHORE WINDS AND ELEVATED SEAS WILL PERSIST
THROUGH SATURDAY. CAUTION FLAGS ARE UP THE BAYS AND NEARSHORE
WATERS...AND ADVISORIES ARE IN EFFECT FOR THE OFFSHORE WATERS.
THE COASTAL FLOOD ADVISORY REMAINS IN EFFECT FOR BEACHES/
INTERCOASTAL WATERWAYS DOWN THE BRAZORIA COUNTY COASTLINE.
ONSHORE WINDS WILL HELP TO PILE UP WATER ONTO ROADWAYS/LOW-LYING
AREAS IN THESE AREAS DURING HIGH TIDE...ESPECIALLY CLOSE TO THE

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      72  84  69  82  66 / 100  50  40  50  50
HOUSTON (IAH)              73  82  71  82  70 / 100  60  40  50  60
GALVESTON (GLS)            75  80  74  80  73 /  60  60  30  40  60

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...FLASH FLOOD WATCH THROUGH SUNDAY MORNING FOR THE FOLLOWING
     ZONES: AUSTIN...BRAZORIA...BRAZOS...BURLESON...CHAMBERS...
     COLORADO...FORT BEND...GALVESTON...GRIMES...HARRIS...
     HOUSTON...LIBERTY...MADISON...MONTGOMERY...POLK...SAN
     JACINTO...TRINITY...WALKER...WALLER...WASHINGTON...WHARTON.

     COASTAL FLOOD ADVISORY UNTIL 6 PM CDT SATURDAY FOR THE FOLLOWING
     ZONES: BRAZORIA...CHAMBERS...GALVESTON.

GM...SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL 6 AM CDT SATURDAY FOR
     THE FOLLOWING ZONES: GALVESTON BAY...MATAGORDA BAY...WATERS
     FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL OUT 20 NM...
     WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM.

     SMALL CRAFT ADVISORY UNTIL 6 AM CDT SATURDAY FOR THE FOLLOWING
     ZONES: WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL
     20 NM TO 60 NM...WATERS FROM HIGH ISLAND TO FREEPORT 20 TO
     60 NM.

&&

DISCUSSION...48
AVIATION/MARINE...40

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1124 AM CDT FRI APR 29 2016

TXZ163-164-177>179-199-213-226-227-301630-
FORT BEND-HARRIS-HOUSTON-MONTGOMERY-POLK-SAN JACINTO-TRINITY-
WALKER-WHARTON-
1124 AM CDT FRI APR 29 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A FLASH FLOOD WATCH IS IN EFFECT AT 1 PM.

THERE IS A SLIGHT RISK OF SEVERE STORMS LATER THIS AFTERNOON AND
OVERNIGHT. DAMAGING WIND...HAIL AND ISOLATED TORNADOES ARE
POSSIBLE. HEAVY RAINFALL IS ALSO POSSIBLE. THE GROUND IS
SATURATED...SO EVEN BRIEF HEAVY DOWNPOURS CAN QUICKLY RUNOFF TO
CAUSE FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A FLASH FLOOD WATCH IS IN EFFECT THROUGH EARLY SUNDAY MORNING.

UNSETTLED WEATHER WILL CONTINUE THROUGH THE WEEKEND INTO EARLY
NEXT WEEK WITH THE THREAT OF FLOODING AND FLASH FLOODING
PERSISTING. IN ADDITION...DUE TO SATURATED SOILS...GUSTY WINDS IN
ANY STRONGER STORMS MAY UPROOT AND TOPPLE TREES.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED LATER THIS AFTERNOON THROUGH
SATURDAY.

TXZ200-214-235>238-301630-
BRAZORIA-CHAMBERS-GALVESTON-JACKSON-LIBERTY-MATAGORDA-
1124 AM CDT FRI APR 29 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON. GIVEN THE
WET TO SATURATED SOILS ACROSS THE AREA STRONG WINDS FROM
THUNDERSTORMS MAY INCREASE THE LIKELIHOOD OF TREES BEING UPROOTED
AND FALLING. STREET FLOODING WILL ALSO BE POSSIBLE IN ASSOCIATION
WITH LOCALLY HEAVY DOWNPOURS.

ELEVATED TIDES AND MODERATE TO STRONG RIP CURRENTS WILL BE
POSSIBLE ON GULF FACING BEACHES. MINOR COASTAL FLOODING WILL BE
POSSIBLE ALONG THE LOWEST LYING ROADS AROUND TIMES OF HIGH TIDE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

RAINFALL IS EXPECTED TO MOVE THROUGH THE AREA TONIGHT AND
SATURDAY. IN ADDITION...A MARGINAL RISK FOR STRONG TO SEVERE
THUNDERSTORMS WILL EXIST. THE PRIMARY THREATS OF SEVERE WEATHER
WILL BE GUSTY WINDS AND HAIL.

RIP CURRENTS WILL REMAIN A RISK AT AREA BEACHES THIS WEEKEND. SWIM
NEAR A LIFEGUARD.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON THROUGH SATURDAY.

GMZ330-335-350-355-370-375-301630-
GALVESTON BAY-MATAGORDA BAY-
WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL 20 NM TO 60 NM-
WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL OUT 20 NM-
WATERS FROM HIGH ISLAND TO FREEPORT 20 TO 60 NM-
WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM-
1124 AM CDT FRI APR 29 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON. WINDS AND
SEAS WILL BE HIGHER IN AND NEAR STORMS. SMALL CRAFT ADVISORIES
MAY BE REQUIRED AS WINDS AND SEAS INCREASE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

UNSETTLED WEATHER AND ELEVATED SEAS ARE EXPECTED THROUGH THE
WEEKEND AND INTO EARLY NEXT WEEK. SMALL CRAFT ADVISORIES WILL
LIKELY BE NEEDED. WINDS AND SEAS WILL BE HIGHER IN AND NEAR
STORMS.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT ANTICIPATED.

TXZ176-195>198-210>212-301630-
AUSTIN-BRAZOS-BURLESON-COLORADO-GRIMES-MADISON-WALLER-WASHINGTON-
1124 AM CDT FRI APR 29 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A FLASH FLOOD WATCH IS IN EFFECT AT 1 PM.

THERE IS A RISK OF SEVERE STORMS LATER THIS AFTERNOON AND
OVERNIGHT. TORNADOES THREAT WILL INCREASE LATE THIS AFTERNOON AND
CONTINUE THROUGH THE EARLY SATURDAY MORNING HOURS. IN ADDITION DAMAGING
WIND...HAIL ARE POSSIBLE. HEAVY RAINFALL IS ALSO LIKELY. THE
GROUND IS SATURATED...SO EVEN BRIEF HEAVY DOWNPOURS CAN QUICKLY
RUNOFF TO CAUSE FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A FLASH FLOOD WATCH IS IN EFFECT THROUGH EARLY SUNDAY MORNING.

UNSETTLED WEATHER WILL CONTINUE THROUGH THE WEEKEND INTO EARLY
NEXT WEEK WITH THE THREAT OF FLOODING AND FLASH FLOODING
PERSISTING. IN ADDITION...DUE TO SATURATED SOILS...GUSTY WINDS IN
ANY STRONGER STORMS MAY UPROOT AND TOPPLE TREES.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED LATER THIS AFTERNOON THROUGH
SATURDAY.