Alert archive / Texas / Tornado Warnings in 2016

Tornado Warning 10, NWS Houston/Galveston, TX

April 27, 2016Harris County, Montgomery County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Apr 27, 2016, 4:36 AM CDT for Harris County, Montgomery County, Texas. It was in force for 24 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 27, 2016, 4:36 AM CDT (09:36 UTC)
Expired: Apr 27, 2016, 5:00 AM CDT
In force: 24 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Harris County, TX, Montgomery County, TX

The radar

The Houston radar (KHGX), 77 km from the middle of the area, began a volume at 09:38 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Apr 27, 4:48 AM CDT	TSTM WND DMG	3 W Tomball, TX	4 LARGE PINE TREES BLOWN DOWN BY STRAIGHT LINE WINDS AT 23015 HOLLY HOLLOW TOMBALL.
Apr 27, 4:49 AM CDT	TSTM WND DMG	Tomball, TX	* 1 FATAL * A DOWNED TREE ONTO A MOBILE HOME KILLED AN ELDERLY FEMALE IN TOMBALL.
Apr 27, 5:06 AM CDT	TSTM WND DMG	Spring, TX	LARGE TREES DOWN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 26, 10:21 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 9.6 hours before the alert went out and 223 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1519 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 858 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -62 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: -0.2
Supercell composite: -2.7

Open this sounding in Storm Lab

The text

As transmitted.

652 
WFUS54 KHGX 270936
TORHGX
TXC201-339-271000-
/O.NEW.KHGX.TO.W.0010.160427T0936Z-160427T1000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
436 AM CDT WED APR 27 2016

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN MONTGOMERY COUNTY IN SOUTHEASTERN TEXAS...
  NORTH CENTRAL HARRIS COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 500 AM CDT
    
* AT 435 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
  WAS LOCATED OVER TOMBALL...MOVING SOUTHEAST AT 60 MPH.

  HAZARD...TORNADO. 

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS...AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* LOCATIONS IMPACTED INCLUDE...
  HUMBLE...TOMBALL...PINEHURST...ALDINE...SPRING...GREATER GREENSPOINT...
  KINGWOOD...THE WOODLANDS...OAK RIDGE NORTH...STAGECOACH...BUSH
  INTERCONTINENTAL AIRPORT...EAST LITTLE YORK / HOMESTEAD...SPLASHTOWN...
  HOOKS AIRPORT...THE WOODLANDS PAVILLION...WILLOWBROOK...EAST HOUSTON...
  NORTHWESTERN ATASCOCITA AND LAKE HOUSTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER
AND PROTECT YOURSELF FROM FLYING DEBRIS.

TORNADOES ARE EXTREMELY DIFFICULT TO SEE AND CONFIRM AT NIGHT. DO NOT
WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW!

&&

LAT...LON 3006 9574 3023 9566 3007 9518 2985 9528
TIME...MOT...LOC 0935Z 294DEG 54KT 3012 9561 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

40

1 follow-up statement

674 
WWUS54 KHGX 270946
SVSHGX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
446 AM CDT WED APR 27 2016

TXC201-339-271000-
/O.CON.KHGX.TO.W.0010.000000T0000Z-160427T1000Z/
MONTGOMERY TX-HARRIS TX-
446 AM CDT WED APR 27 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 AM CDT FOR SOUTH
CENTRAL MONTGOMERY AND NORTH CENTRAL HARRIS COUNTIES...
    
AT 446 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED OVER SPLASHTOWN...OR NEAR SPRING...MOVING EAST AT 60 MPH.

HAZARD...TORNADO. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS...AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

LOCATIONS IMPACTED INCLUDE...
HUMBLE...TOMBALL...ALDINE...SPRING...GREATER GREENSPOINT...KINGWOOD...THE
WOODLANDS...OAK RIDGE NORTH...BUSH INTERCONTINENTAL AIRPORT...EAST
LITTLE YORK / HOMESTEAD...SPLASHTOWN...HOOKS AIRPORT...THE WOODLANDS
PAVILLION...EAST HOUSTON...NORTHWESTERN ATASCOCITA AND LAKE HOUSTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORNADOES ARE EXTREMELY DIFFICULT TO SEE AND CONFIRM AT NIGHT. DO NOT
WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW!

&&

LAT...LON 3007 9518 2985 9528 3003 9567 3021 9559
TIME...MOT...LOC 0946Z 291DEG 54KT 3007 9547 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

40

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this tornado warning went out at Apr 27, 4:00 AM CDT, 36 minutes earlier.

Area forecast discussion, Apr 27, 4:00 AM CDT, 36 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
400 AM CDT WED APR 27 2016

.DISCUSSION...
A RAGGED LINE OF SHOWERS AND THUNDERSTORMS ENTERING THE NORTHERN
FRINGES OF OUR FORECAST AREA...WITH THE WESTERN-MOST MORE PRONOUNCED
LINE SPEEDING UP AND MOVING SOUTHEAST AT AROUND 50 MPH...DURING
THIS PAST HOUR. IF THIS -TSRA ACTIVITY DOESN'T BECOME TOO DETACHED
FROM ITS OUTFLOW BOUNDARY...IT WILL STILL BE ENTERING A STABLE
ENVIRONMENT AND STRUGGLE TO PRODUCE ANY SIGNIFICANT DOWNBURST
WINDS OR SMALL HAIL. WITH THAT BEING SAID...THE OVERALL HIGH SPEED
OF THIS WESTERN LINE STILL KEEPS THE THREAT OF ONE OF THESE
STRONGER STORMS PUTTING DOWN 60 MPH WINDS AND/OR PRODUCING PEA TO
NICKEL SIZE HAIL. THE SEVERE THUNDERSTORM WATCH FOR OUR NORTHERN
TIER COUNTIES IS IN EFFECT THROUGH 5 AM. THIS CONVECTIVE LINE...
WITH POCKETS OF DISCRETE STORM CELLS...WILL ADVANCE INTO THE
CENTRAL CWA AND REACH THE CITY BETWEEN THE HOURS OF 5 AND 7 AM.
MORE SCATTERED ACTIVITY IS FORECAST TO SLOWLY MEANDER INTO THE
SOUTHEASTERN FORECAST AREA DURING THE MORNING DAYTIME HOURS. THERE
IS A 50/50 CHANCE THAT SHRA OR TS ACTIVITY WILL BLOSSOM UP OVER
THE SOUTH(EAST) ERN CWA THIS AFTERNOON. IT REALLY ALL DEPENDS UPON
IF WE CAN WARM INTO THE MIDDLE 80S AND IF WE CAN GENERATE NEW
ACTIVITY ON LINGERING PRIOR STORM OUTFLOW BOUNDARIES. BREAKS IN
THE LATE MORNING INTO EARLY AFTERNOON CLOUD COVER WILL INCREASE
THE LIKELIHOOD FOR AFTERNOON RE-DEVELOPMENT.

THE CURRENT UPPER LOW ACROSS THE NORTHERN ROCKY SPINE WILL BE
PASSING INTO THE UPPER OHIO VALLEY AS A SHALLOW OPEN WAVE TROUGH
TOMORROW...THE NEXT UPPER LOW NESTLING INTO THE LOWER GREAT BASIN.
THIS LOW IS MODELED TO BE JUST AS DEEP AND TO TAKE A SIMILAR PATH
THAN TODAY'S LOW. THE BEST DOWNSTREAM DIFFULENCE WILL OCCUR ON
SATURDAY AND...WITH A SHORTWAVE DISTURBANCE OR TWO PASSING UP
AHEAD OF THE MAIN LOW...LIFT WILL BE NOT BE A PROBLEM WITHIN A
HIGHLY MOIST RESIDENT AIR MASS. MODEST POPS ON FRIDAY WITH A
STRENGTHENED LOW LEVEL JET AND A CAP TO WORK AGAINST. THIS WARM
NOSE WILL WEAKEN WITH THE EASTERN APPROACH OF THE WESTERN TEXAS
DRY LINE SATURDAY...AND CHANCES FOR WIDESPREAD MODERATE RAIN AND
THUNDERSTORM ACTIVITY BECOMES LIKELY THROUGH THE DAY SATURDAY. THE
MAIN THREATS WILL BE WIND AND...WITH PROGGED PWATS EXCEEDING 1.8
INCHES/TRAINING STORMS FOCUSED ALONG WHAT MAY BE A LOWER LEVEL
SW-TO-NE ORIENTATED PRESSURE TROUGH/BOUNDARY...HIGH RAINFALL. 31

&&

.MARINE...
A LINE OF SHOWERS AND THUNDERSTORMS IS EXPECTED TO PUSH OFF THE
COAST THIS MORNING. EXPECT A BRIEF WIND SHIFT TO THE NORTH AS THIS
OCCURS. ONSHORE WINDS WILL BECOME REESTABLISHED LATER IN THE DAY.
SPEEDS AND SEAS WILL INCREASE GOING INTO THE WEEKEND. SMALL CRAFT
ADVISORIES WILL PROBABLY BE REQUIRED. UNSETTLED WEATHER IS EXPECTED
THIS WEEKEND WITH SOME PERIODS OF STORMS POSSIBLE EACH DAY.

GOING TO ISSUE A COASTAL FLOOD ADVISORY FOR THE BOLIVAR PENINSULA
LATER THIS MORNING. TIDE LEVELS WILL BE AROUND 1.5 FEET ABOVE NORMAL
TODAY. THESE LEVELS WILL CAUSE MINOR OVERWASH ON HIGHWAY 87 AT
HIGHWAY 124 LEADING UP TO HIGH TIDE AT 946 AM THIS MORNING...AND
WILL PROBABLY PERSIST INTO THE EARLY AFTERNOON BEFORE RECEDING. NO
OTHER PROBLEM SPOTS IN GALVESTON COUNTY ARE ANTICIPATED. 47

&&

.AVIATION...
LINE OF SHRA/TSTMS SHOULD BE PUSHING THRU THE HOUSTON AREA BETWEEN 5-
8 AM AND OFF THE COAST BY AROUND 9 AM. ASSUMING CURRENT STRENGTH
HOLDS WHEN THEY MOVE THROUGH...WOULD EXPECT A N/NW WIND SHIFT WITH
SOME 25-40KT GUSTS ALONG THE LEADING EDGE AND SOME BRIEF HEAVY RAIN.
ANTICIPATE THINGS TREND INTO VFR TERRITORY AREAWIDE FAIRLY QUICKLY
IN ITS WAKE. SOME MODEL GUIDANCE SUGGESTS SOME SCT REDEVELOPMENT
LATER IN THE AFTN...BUT HAVE DOUBTS AND WON'T INCLUDE IN THIS SET OF
TAFS. WILL INCLUDE MVFR STRATUS DEVELOPING AFTER 6Z. 47

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      87  67  87  70  85 /  30  10  20  30  40
HOUSTON (IAH)              85  71  87  73  85 /  50  10  20  20  30
GALVESTON (GLS)            80  74  83  73  81 /  50  20  10  20  30

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...COASTAL FLOOD ADVISORY FROM 7 AM THIS MORNING TO 2 PM CDT THIS
     AFTERNOON FOR THE FOLLOWING ZONES: GALVESTON.

GM...SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL 10 AM CDT THIS MORNING
     FOR THE FOLLOWING ZONES: GALVESTON BAY...MATAGORDA BAY.

     SMALL CRAFT SHOULD EXERCISE CAUTION UNTIL 1 PM CDT THIS
     AFTERNOON FOR THE FOLLOWING ZONES: 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.

&&

DISCUSSION...31/47

Hazardous weather outlook, Apr 26, 4:01 PM CDT, 12 hours 35 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
401 PM CDT TUE APR 26 2016

GMZ335-TXZ163-164-176>179-195>200-212>214-227-237-238-272115-
BRAZORIA-BRAZOS-BURLESON-CHAMBERS-FORT BEND-GALVESTON-
GALVESTON BAY-GRIMES-HARRIS-HOUSTON-LIBERTY-MADISON-MONTGOMERY-
POLK-SAN JACINTO-TRINITY-WALKER-WALLER-WASHINGTON-
401 PM CDT TUE APR 26 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...TONIGHT

A STRONG UPPER LEVEL STORM SYSTEM MOVING INTO THE CENTRAL PLAINS
WILL HELP DRAG A LINE OF SHOWERS AND THUNDERSTORMS ACROSS THE
STATE FROM THE WEST STARTING THIS EVENING. THERE IS A SLIGHT RISK
FOR STRONG TO SEVERE THUNDERSTORMS FOR NORTHWESTERN PORTIONS OF
SOUTHEAST TEXAS TONIGHT INTO WEDNESDAY MORNING AS THIS LINE MOVES
ACROSS THE REGION. THE MAIN THREATS FROM THESE STORMS WILL BE
DAMAGING DOWNBURST WINDS AND HAIL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

WITH THE ACTIVE WEATHER PATTERN IN PLACE...THERE IS A CHANCE FOR
WIDESPREAD SHOWERS AND THUNDERSTORMS ON FRIDAY AND SATURDAY.
MODELS ARE INDICATING FAVORABLE CONDITIONS FOR LOCALLY HEAVY
RAINS THESE DAYS. DUE TO RECENT FLOODING ISSUES...IT IS
RECOMMENDED TO KEEP A CLOSE EYE ON THE FORECAST THE REST OF THIS
WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TONIGHT FOR NORTHWEST PARTS OF
THE AREA.

In the hours before

Special weather statement, Apr 27, 2:40 AM CDT, 1 hour 56 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
240 AM CDT WED APR 27 2016

TXZ163-176-177-196-198-270845-
MADISON TX-GRIMES TX-WALKER TX-HOUSTON TX-BRAZOS TX-
240 AM CDT WED APR 27 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HOUSTON...
NORTHWESTERN WALKER...NORTH CENTRAL GRIMES...NORTHEASTERN BRAZOS AND
MADISON COUNTIES UNTIL 345 AM CDT...

AT 239 AM CDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG
A LINE EXTENDING FROM 11 MILES WEST OF CENTERVILLE TO 6 MILES
NORTHWEST OF KURTEN. MOVEMENT WAS EAST AT 40 MPH.

HAIL UP TO ONE-HALF INCH AND WINDS IN EXCESS OF 35 MPH WILL BE
POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
CROCKETT...MADISONVILLE...AUSTONIO...LOVELADY...LATEXO...NORMANGEE...
AND NORTH ZULCH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CDT FOR
SOUTHEASTERN TEXAS.

LAT...LON 3144 9528 3101 9551 3090 9563 3091 9571
      3086 9583 3080 9641 3091 9635 3097 9625
      3109 9598 3109 9577 3114 9577 3116 9573
      3121 9575 3127 9573 3132 9566 3136 9566
      3138 9569
TIME...MOT...LOC 0739Z 262DEG 32KT 3123 9617 3086 9632

40

Special weather statement, Apr 27, 3:09 AM CDT, 1 hour 27 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
309 AM CDT WED APR 27 2016

TXZ163-270845-
HOUSTON TX-
309 AM CDT WED APR 27 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HOUSTON COUNTY UNTIL
345 AM CDT...

AT 308 AM CDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS 15
MILES WEST OF LATEXO...OR 17 MILES NORTH OF AUSTONIO...MOVING EAST
AT 45 MPH.

HAIL UP TO ONE-HALF INCH AND WINDS IN EXCESS OF 40 MPH WILL BE
POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
GRAPELAND...LATEXO AND WECHES.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CDT FOR
SOUTHEASTERN TEXAS.

LAT...LON 3158 9526 3157 9520 3143 9527 3137 9568
      3142 9571 3145 9571 3146 9572 3146 9575
      3147 9574 3147 9572 3149 9573 3149 9574
      3151 9574 3153 9565 3154 9565 3159 9528
TIME...MOT...LOC 0808Z 262DEG 49KT 3143 9574

40

Special weather statement, Apr 27, 3:18 AM CDT, 1 hour 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
318 AM CDT WED APR 27 2016

TXZ176-195>198-270915-
MADISON TX-GRIMES TX-BURLESON TX-WASHINGTON TX-BRAZOS TX-
318 AM CDT WED APR 27 2016

...SIGNIFICANT WEATHER ADVISORY FOR BURLESON...NORTHERN WASHINGTON...
NORTHWESTERN GRIMES...BRAZOS AND WESTERN MADISON COUNTIES UNTIL 415
AM CDT...

AT 317 AM CDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG
A LINE EXTENDING FROM NEAR CALVERT TO NEAR CALDWELL TO NEAR FEDOR.
MOVEMENT WAS EAST AT 45 MPH.

HAIL UP TO ONE-HALF INCH AND WINDS IN EXCESS OF 40 MPH WILL BE
POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
COLLEGE STATION...BRYAN...NAVASOTA...MADISONVILLE...CALDWELL...WASHINGTON...
SOMERVILLE...SNOOK...BEDIAS...KURTEN...WIXON VALLEY...MILLICAN...KYLE
FIELD...LAKE SOMERVILLE DAM...NORMANGEE...IOLA...WELLBORN...INDEPENDENCE...
DEANVILLE AND CHRIESMAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CDT FOR
SOUTHEASTERN TEXAS.

LAT...LON 3058 9680 3064 9679 3073 9662 3070 9656
      3074 9646 3091 9635 3107 9604 3109 9592
      3063 9592 3029 9616 3019 9675 3024 9673
      3025 9669 3030 9664 3032 9674 3039 9679
      3046 9690
TIME...MOT...LOC 0817Z 254DEG 43KT 3101 9670 3061 9673 3025 9702

40

Special weather statement, Apr 27, 3:35 AM CDT, 1 hour 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
335 AM CDT WED APR 27 2016

TXZ163-164-270900-
TRINITY TX-HOUSTON TX-
335 AM CDT WED APR 27 2016

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL HOUSTON AND NORTHERN
TRINITY COUNTIES UNTIL 400 AM CDT...

AT 334 AM CDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG
A LINE EXTENDING FROM 11 MILES NORTHEAST OF GRAPELAND TO 7 MILES
NORTHWEST OF KENNARD TO NEAR LOVELADY. MOVEMENT WAS NORTHEAST AT 55
MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
LOVELADY...KENNARD...WECHES...PENNINGTON AND CENTRALIA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE IN LEAGUE CITY.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CDT FOR
SOUTHEASTERN TEXAS.

LAT...LON 3157 9521 3158 9517 3156 9514 3155 9515
      3154 9514 3152 9510 3149 9511 3147 9510
      3144 9501 3142 9500 3138 9495 3134 9496
      3132 9490 3131 9490 3106 9544 3098 9556
      3138 9535 3157 9542 3159 9528
TIME...MOT...LOC 0834Z 234DEG 55KT 3161 9535 3142 9529 3106 9547

40

Special weather statement, Apr 27, 4:08 AM CDT, 28 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
408 AM CDT WED APR 27 2016

TXZ177-196>199-210>213-226-227-271000-
GRIMES TX-AUSTIN TX-WALKER TX-WALLER TX-COLORADO TX-WASHINGTON TX-
HARRIS TX-WHARTON TX-BRAZOS TX-MONTGOMERY TX-FORT BEND TX-
408 AM CDT WED APR 27 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN WHARTON...CENTRAL
COLORADO...EASTERN WASHINGTON...SOUTHWESTERN WALKER...WALLER...
SOUTHERN GRIMES...SOUTHEASTERN BRAZOS...WESTERN MONTGOMERY...
NORTHWESTERN HARRIS...AUSTIN AND NORTHWESTERN FORT BEND COUNTIES
UNTIL 500 AM CDT...

AT 408 AM CDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG
A LINE EXTENDING FROM 11 MILES EAST OF ANDERSON TO NEAR COLUMBUS.
MOVEMENT WAS SOUTHEAST AT 45 MPH.

WINDS IN EXCESS OF 45 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
HUNTSVILLE...WESTERN ROSENBERG...BRENHAM...KATY...NAVASOTA...SEALY...
HEMPSTEAD...PRAIRIE VIEW...BROOKSHIRE...BELLVILLE...COLUMBUS...EAGLE LAKE...
PINEHURST...WASHINGTON...HOCKLEY...WALLER...EAST BERNARD...MAGNOLIA...
WALLIS AND FULSHEAR.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CDT FOR
SOUTHEASTERN TEXAS.

LAT...LON 3052 9618 3073 9553 2936 9595 2968 9667
TIME...MOT...LOC 0908Z 310DEG 46KT 3054 9581 2965 9653

Special weather statement, Apr 27, 4:12 AM CDT, 24 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
412 AM CDT WED APR 27 2016

TXZ163-164-178-179-271000-
TRINITY TX-SAN JACINTO TX-POLK TX-HOUSTON TX-
412 AM CDT WED APR 27 2016

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL HOUSTON...
NORTHEASTERN WALKER...NORTHWESTERN SAN JACINTO...NORTHWESTERN POLK
AND TRINITY COUNTIES UNTIL 500 AM CDT...

AT 411 AM CDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG
A LINE EXTENDING FROM WELLS TO 6 MILES NORTHWEST OF APPLE SPRINGS TO
NEAR GROVETON TO NEAR SEBASTOPOL. MOVEMENT WAS EAST AT 35 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
APPLE SPRINGS...TRINITY...CORRIGAN...GROVETON...SEVEN OAKS...SEBASTOPOL
AND CENTRALIA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

IF ON OR NEAR LAKE LIVINGSTON...GET OUT OF THE WATER AND MOVE INDOORS
OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE OUT TO 10 MILES
FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU ARE
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER NOW! DO
NOT BE CAUGHT ON THE WATER IN A THUNDERSTORM.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CDT FOR
SOUTHEASTERN TEXAS.

LAT...LON 3144 9501 3139 9495 3134 9496 3133 9490
      3128 9488 3126 9490 3122 9486 3115 9486
      3110 9473 3086 9486 3081 9533 3087 9533
      3088 9535 3085 9537 3091 9541 3106 9533
      3129 9512 3145 9505
TIME...MOT...LOC 0911Z 257DEG 29KT 3150 9492 3130 9501 3107 9522 3088
9531

40

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 27, 1:49 AM CDT	Special Weather Statement	HGX	Houston	56 min
Apr 27, 2:40 AM CDT	Special Weather Statement	HGX	Houston, Madison	65 min
Apr 27, 3:09 AM CDT	Special Weather Statement	HGX	Houston	36 min
Apr 27, 3:18 AM CDT	Special Weather Statement	HGX	Brazos, Burleson, Grimes, Madison	57 min
Apr 27, 3:35 AM CDT	Special Weather Statement	HGX	Houston	25 min
Apr 27, 3:42 AM CDT	Severe Thunderstorm Warning	HGX	Houston, Trinity, Walker	33 min
Apr 27, 3:51 AM CDT	Severe Thunderstorm Warning	HGX	Brazos, Grimes, Houston, Madison, Walker	39 min
Apr 27, 4:08 AM CDT	Special Weather Statement	HGX	Austin, Grimes, Waller	52 min
Apr 27, 4:12 AM CDT	Special Weather Statement	HGX	Trinity	48 min
Apr 27, 4:25 AM CDT	Severe Thunderstorm Warning	HGX	Austin, Brazoria, Fort Bend, Harris, Liberty, Montgomery and 4 more	65 min
Apr 27, 4:26 AM CDT	Severe Thunderstorm Warning	HGX	Houston, Madison, Polk, San Jacinto, Trinity, Walker	49 min
Apr 27, 4:29 AM CDT	Severe Thunderstorm Warning	HGX	Houston, Polk, Trinity	46 min
Apr 27, 4:50 AM CDT	Tornado Warning	HGX	Liberty, Montgomery, San Jacinto	25 min
Apr 27, 5:03 AM CDT	Special Marine Warning	HGX		117 min
Apr 27, 5:12 AM CDT	Severe Thunderstorm Warning	HGX	Chambers, Harris, Liberty, Montgomery, Polk, San Jacinto and 1 more	48 min
Apr 27, 5:17 AM CDT	Coastal Flood Advisory	HGX	Galveston	9 hr
Apr 27, 5:18 AM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty	57 min
Apr 27, 5:20 AM CDT	Tornado Warning	HGX	Polk, San Jacinto	25 min
Apr 27, 5:33 AM CDT	Special Weather Statement	HGX	Harris, Montgomery, San Jacinto	42 min
Apr 27, 5:51 AM CDT	Severe Thunderstorm Warning	HGX	Chambers, Galveston, Liberty	54 min
Apr 27, 5:54 AM CDT	Tornado Warning	HGX	Liberty	21 min
Apr 27, 6:08 AM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Galveston	37 min
Apr 27, 6:12 AM CDT	Special Weather Statement	HGX	Liberty, Polk, San Jacinto, Trinity	63 min
Apr 27, 6:50 AM CDT	Special Marine Warning	HGX		115 min
Apr 27, 8:36 AM CDT	Special Marine Warning	HGX		54 min

Nearby

Tornado Warnings in Texas, 2016 Every tornado warning in 2016 Tornadoes in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.