Alert archive / Texas / Special Weather Statements in 2018

Special Weather Statement, NWS Houston/Galveston, TX

June 9, 2018Washington County, Texas

NWS Houston/Galveston, TX issued this special weather statement at Jun 9, 2018, 12:21 PM CDT for Washington County, Texas. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 9, 2018, 12:21 PM CDT (17:21 UTC)
Expired
Jun 9, 2018, 12:45 PM CDT
In force
24 min
Issued by
NWS Houston/Galveston, TX

County Washington County, TX

The radar

The Ft Hood radar (KGRK), 114 km from the middle of the area, began a volume at 17:21 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.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 5.4 hours before the alert went out and 322 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-pSkew-T log-p diagram, Lake Charles Mun, LA at 12:00Z on 2018-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1863 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 2018-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1863 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
803 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
19 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 9, 10:27 AM CDT, 1 hour 54 minutes earlier.

Area forecast discussion, Jun 9, 10:27 AM CDT, 1 hour 54 minutes before
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Hazardous weather outlook, Jun 9, 10:00 AM CDT, 2 hours 21 minutes before
Hazardous Weather Outlook
National Weather Service Houston/Galveston TX
1000 AM CDT Sat Jun 9 2018

GMZ330-335-350-355-370-375-TXZ163-164-176>179-195>200-210>214-226-
227-235>238-300-313-335>338-436>438-101500-
Austin-Brazoria Islands-Brazos-Burleson-Chambers-Coastal Brazoria-
Coastal Galveston-Coastal Harris-Coastal Jackson-
Coastal Matagorda-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
Colorado-Fort Bend-Galveston Bay-
Galveston Island and Bolivar Peninsula-Grimes-Houston-
Inland Brazoria-Inland Galveston-Inland Harris-Inland Jackson-
Inland Matagorda-Madison-Matagorda Bay-Matagorda Islands-
Montgomery-Northern Liberty-Polk-San Jacinto-Southern Liberty-
Trinity-Walker-Waller-Washington-
Waters from Freeport to Matagorda Ship Channel TX from 20 to
60 NM-Waters from High Island to Freeport TX from 20 to 60 NM-
Wharton-
1000 AM CDT Sat Jun 9 2018

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

.DAY ONE...Today and Tonight

Thunderstorm activity is expected to develop this afternoon and
evening. Brief heavy downpours are possible with any slow moving
storms and gusty winds are possible with the strongest storms
along and south of I-10.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

In the hours before

Special weather statement, Jun 9, 11:39 AM CDT, 42 minutes before
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Special weather statement, Jun 9, 12:10 PM CDT, 11 minutes before
Special Weather Statement
National Weather Service Houston/Galveston TX
1210 PM CDT SAT JUN 9 2018

TXZ213-237-238-313-337-338-091745-
Inland Brazoria TX-Coastal Harris TX-Inland Galveston TX-
Coastal Galveston TX-Inland Harris TX-Coastal Brazoria TX-
1210 PM CDT SAT JUN 9 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN GALVESTON...
NORTHEASTERN BRAZORIA AND SOUTHEASTERN HARRIS COUNTIES UNTIL 1245 PM
CDT...

At 1209 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Hillcrest to Liverpool. Movement was
northeast at 5 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Southern Pasadena, eastern Pearland, League City, Texas City,
Friendswood, Alvin, Dickinson, South Houston, La Marque, Santa Fe,
Seabrook, Webster, Hitchcock, Kemah, Clear Lake, South Belt /
Ellington, Greater Hobby Area, Nassau Bay, Taylor Lake Village and El
Lago.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 2922 9540 2968 9523 2960 9498 2955 9502
      2951 9499 2937 9504 2920 9516 2921 9520
      2920 9520 2919 9518 2919 9516 2912 9521
TIME...MOT...LOC 1709Z 227DEG 15KT 2938 9518 2928 9526
Special weather statement, Jun 9, 12:21 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Houston/Galveston TX
1221 PM CDT SAT JUN 9 2018

TXZ197-210-211-091745-
Washington TX-Colorado TX-Austin TX-
1221 PM CDT SAT JUN 9 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL COLORADO...
NORTHWESTERN AUSTIN AND SOUTH CENTRAL WASHINGTON COUNTIES UNTIL 1245
PM CDT...

At 1220 PM CDT, Doppler radar was tracking a strong thunderstorm near
Industry, or 16 miles north of Columbus, moving northeast at 20 mph.

Winds in excess of 35 mph will be possible with this storm.

Locations impacted include...
Shelby, Industry, New Ulm and Frelsburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 2996 9657 3003 9661 3020 9658 3009 9630
      2984 9652 2989 9663
TIME...MOT...LOC 1720Z 204DEG 16KT 2995 9655

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 11:39 AM CDTSpecial Weather StatementHGXGalveston36 min
Jun 9, 12:10 PM CDTSpecial Weather StatementHGXGalveston35 min
Jun 9, 12:54 PM CDTSpecial Marine WarningHGX33 min
Jun 9, 1:21 PM CDTSpecial Weather StatementHGXBrazoria24 min
Jun 9, 1:59 PM CDTSpecial Weather StatementHGXBrazoria31 min
Jun 9, 2:26 PM CDTSpecial Weather StatementHGXBrazoria34 min
Jun 9, 2:46 PM CDTSpecial Weather StatementHGXGalveston29 min
Jun 9, 2:49 PM CDTSpecial Marine WarningHGX26 min
Jun 9, 2:56 PM CDTSevere Thunderstorm WarningHGXGalveston, Harris34 min

Nearby

Special Weather Statements in Texas, 2018Every special weather statement in 2018

Sources

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