Tornado Warning 45, NWS Houston/Galveston, TX

897 
WWUS54 KHGX 240101
SVSHGX

Severe Weather Statement
National Weather Service Houston/Galveston TX
801 PM CDT TUE MAY 23 2017

TXC039-157-167-201-240115-
/O.CON.KHGX.TO.W.0045.000000T0000Z-170524T0115Z/
Galveston TX-Fort Bend TX-Brazoria TX-Harris TX-
801 PM CDT TUE MAY 23 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
NORTHWESTERN GALVESTON...EAST CENTRAL FORT BEND...NORTHEASTERN
BRAZORIA AND SOUTHEASTERN HARRIS COUNTIES...
    
At 759 PM CDT, a severe thunderstorm capable of producing a tornado 
was located over Manvel, moving east at 50 mph. Strong winds 
between 60-70 mph can be expected near Manvel.

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...
Southern Pasadena, Pearland, League City, Texas City, Friendswood,
Alvin, Dickinson, Santa Fe, southwestern Seabrook, Webster, Manvel,
Clear Lake, Fresno, southern South Belt / Ellington, Nassau Bay,
Taylor Lake Village, El Lago, Arcola, Brookside Village and Iowa
Colony.

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.

&&

LAT...LON 2942 9548 2960 9548 2958 9503 2935 9508
TIME...MOT...LOC 0059Z 278DEG 44KT 2949 9531 

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

$$

Hathaway

Area Forecast Discussion
National Weather Service Houston/Galveston TX
644 PM CDT Tue May 23 2017

.AVIATION...
Storms occurring ahead of the cold front will be moving across the
terminals from 00Z at KUTS to about 04-05Z at KGLS. A strong
thunderstorm should be east of KCLL by 00Z; however, more showers
were developing to the west of the site. There is a slight
possibility of a strong or severe storm with gusts in excess of
50 knots and large hail making its way through the sites between
KCXO and KHOU between 00Z and 02Z.

Expect the storms to be off the coast by 06Z. VFR conditions are
then expected. Breezy winds are expected to then develop after 15Z
Wednesday.

40

&&

.PREV DISCUSSION... /ISSUED 438 PM CDT Tue May 23 2017/

DISCUSSION...
Surface analysis as of 1 PM CDT showed an approaching cold front
stretching from Del Rio to Waco towards Shreveport, with a weak
prefrontal wind shift entering portions of the Brazos Valley.
Regional radar mosaic this afternoon shows a few cells developing
along and behind the front as it continues to push towards the
southeast. With RAP guidance instability increasing ahead of the
approaching boundary and lift overspreading the region from a
passing 90 knot upper jet, expect the severe weather threat to
increase over the next few hours for Southeast Texas as scattered
thunderstorms continue to develop along the front. Expect the
front to clear the Brazos Valley late this afternoon, reaching the
Houston metro mid-evening, and clearing the coast around midnight
tonight. Steep mid-level lapse rates will result in a large hail
and damaging wind threat (especially if any storms bow out) as the
front progresses southward.

A few showers may linger behind the front tonight before
dissipating as drier air moves into the region, with clearing
clouds and cold air advection behind the front resulting in
cool overnight low temperatures in the mid 50s to mid 60s. Dry
weather will continue through the rest of the week with high
temperatures gradually warming into into the low 90s by Friday as
shortwave ridging translates across the region. Northerly winds
will gradually swing around to the south by Thursday as surface
high pressure slides off to the east, allowing moisture to
gradually return by the beginning of the weekend. A cold front
looks to slide into Texas by the beginning of the weekend and
stall at the beginning of next week as an upper low reaches the
Great Lakes. Will have to keep an eye on the Monday/Tuesday
portion of the forecast next week as disturbances overriding this
stalled boundary look to result in a very wet period for the
region.

Huffman

AVIATION...
A cold front will push off the coast tonight with strengthening
northerly winds and building seas in its wake (some thunderstorms
developing along and ahead of the front could become strong or
severe as they move off the coast this evening). Onshore winds
will return early Thursday and quickly strengthen during the day.
Elevated winds and seas can be expected from the end of the week
on through the upcoming Memorial Day weekend. Caution flags will
probably be needed, and advisories will be possible. 42

CLIMATE...
Low temperatures Wednesday morning will be well-below normal for
late May and observations across parts of the Brazos Valley and
Piney Woods regions may approach or reach record low temperatures
for May 24. A listing of record low temperatures for May 24 for
the first order climate sites are provided below.

LOCATION                RECORD LOW       YEAR
City of Houston             54           1892
Houston Hobby               57           1940
College Station             55           1913
Galveston                   62           1940

Huffman

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      56  82  60  90  73 /  50  10   0   0  10
Houston (IAH)              59  83  64  89  74 /  60  10   0   0   0
Galveston (GLS)            63  81  73  84  79 /  60  10   0   0   0

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...SMALL CRAFT SHOULD EXERCISE CAUTION from 11 PM CDT this evening
     through Wednesday morning 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...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...14
Aviation/Marine...40

Hazardous Weather Outlook
National Weather Service Houston/Galveston TX
455 PM CDT Tue May 23 2017

TXZ163-164-176>179-195>200-210>214-226-227-235>238-242200-
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-
455 PM CDT Tue May 23 2017

This hazardous weather outlook is for portions of Southeast Texas..

.DAY ONE...Tonight

Scattered thunderstorms will be possible tonight along and ahead
of a cold front. Some of these storms may be strong to severe and
capable of producing gusty winds and large hail. Brief heavy
downpours will also be possible.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Limited spotter activation may be needed tonight.

GMZ330-335-350-355-370-375-242200-
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-
455 PM CDT Tue May 23 2017

This hazardous weather outlook is for portions of Southeast Texas..

.DAY ONE...This Afternoon and Tonight

Scattered thunderstorms will be possible tonight along and ahead
of a cold front. Some of these storms may be strong to severe and
capable of producing gusty winds, large hail, and locally higher
seas.

Small craft should exercise caution with winds behind the front.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Small craft should exercise caution with winds behind the front
Wednesday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

Special Weather Statement
National Weather Service Houston/Galveston TX
701 PM CDT TUE MAY 23 2017

TXZ164-178-179-200-240045-
San Jacinto TX-Liberty TX-Polk TX-Trinity TX-
701 PM CDT TUE MAY 23 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN TRINITY...CENTRAL
SAN JACINTO...NORTH CENTRAL LIBERTY AND SOUTHERN POLK COUNTIES UNTIL
745 PM CDT...

At 700 PM CDT, Doppler radar was tracking a strong thunderstorm over
Point Blank, or 15 miles west of Livingston, moving southeast at 60
mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Livingston, Onalaska, Point Blank, Goodrich, Lake Livingston State
Park, Alabama-Coushatta Reservation, West Livingston, Romayor,
Oakhurst and Rye.

A severe thunderstorm watch remains in effect until 1100 PM CDT for
southeastern Texas.

LAT...LON 3072 9533 3091 9526 3075 9462 3041 9477
TIME...MOT...LOC 0000Z 294DEG 50KT 3077 9519

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
720 PM CDT TUE MAY 23 2017

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

0700 PM     TSTM WND GST     6 NW SEALY              29.82N  96.24W
05/23/2017  E60 MPH          AUSTIN             TX   PUBLIC

            TREE LIMBS AND FENCES DOWN.

&&

EVENT NUMBER HGX1700217

40

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
721 PM CDT TUE MAY 23 2017

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

0700 PM     HAIL             6 NW SEALY              29.84N  96.22W
05/23/2017  E0.75 INCH       AUSTIN             TX   PUBLIC

            DIME SIZE HAIL NEAR SEALY.

&&

EVENT NUMBER HGX1700218

40

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
728 PM CDT TUE MAY 23 2017

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

0635 PM     TSTM WND DMG     12 N COLUMBUS           29.87N  96.55W
05/23/2017                   COLORADO           TX   911 CALL CENTER

            PART OF FM-109 IN FRELSBURG BLOCKED BY A DOWNED TREE.

&&

EVENT NUMBER HGX1700219

40

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
735 PM CDT TUE MAY 23 2017

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

0501 PM     HAIL             6 NE GRAPELAND          31.55N  95.40W
05/23/2017  E1.00 INCH       HOUSTON            TX   911 CALL CENTER

            QUARTER SIZE HAIL NEAR PERCILLA.

&&

EVENT NUMBER HGX1700220

40

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
739 PM CDT TUE MAY 23 2017

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

0731 PM     TSTM WND GST     2 SSW ROSENBERG         29.52N  95.81W
05/23/2017  M61 MPH          FORT BEND          TX   MESONET

            MESONET OBSERVATION SITE MEASURED 61 MPH GUST

&&

EVENT NUMBER HGX1700221

MH