Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 41, NWS Houston/Galveston, TX

May 26, 2018Brazoria County, Fort Bend County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 26, 2018, 6:53 PM CDT for Brazoria County, Fort Bend County, Texas. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 26, 2018, 6:53 PM CDT (23:53 UTC)
Expired: May 26, 2018, 7:30 PM CDT
In force: 37 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Brazoria County, TX, Fort Bend County, TX

The radar

The Houston radar (KHGX), 53 km from the middle of the area, began a volume at 23:54 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, 11.9 hours before the alert went out and 247 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: 1998 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 679 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at May 26, 3:53 PM CDT, 3 hours earlier.

Area forecast discussion, May 26, 3:53 PM CDT, 3 hours before

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In the hours before

Special weather statement, May 26, 4:02 PM CDT, 2 hours 51 minutes before

Special Weather Statement
National Weather Service Houston/Galveston TX
402 PM CDT SAT MAY 26 2018

TXZ214-262145-
Chambers TX-
402 PM CDT SAT MAY 26 2018

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN CHAMBERS COUNTY UNTIL 445
PM CDT...

At 401 PM CDT, Doppler radar was tracking a strong thunderstorm over
Stowell, or near Hamshire, moving west at 10 mph.

Winds in excess of 40 mph and small hail will be possible with this
storm.

Locations impacted include...
Winnie and Stowell.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm 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.

&&

LAT...LON 2957 9454 2958 9455 2957 9457 2987 9462
      2989 9443 2989 9442 2985 9436 2967 9436
TIME...MOT...LOC 2101Z 086DEG 8KT 2980 9438

Special weather statement, May 26, 5:30 PM CDT, 1 hour 23 minutes before

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  <link rel="stylesheet" href="index.css">
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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Special weather statement, May 26, 6:00 PM CDT, 53 minutes before

Special Weather Statement
National Weather Service Houston/Galveston TX
600 PM CDT SAT MAY 26 2018

TXZ213-237-238-313-262345-
Inland Brazoria TX-Coastal Harris TX-Inland Galveston TX-
Inland Harris TX-
600 PM CDT SAT MAY 26 2018

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN GALVESTON...NORTHEASTERN
BRAZORIA AND SOUTH CENTRAL HARRIS COUNTIES UNTIL 645 PM CDT...

At 558 PM CDT, Doppler radar was tracking a strong thunderstorm near
Pearland, moving southwest at 20 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Western Pasadena, Pearland, Friendswood,
Alvin, South Houston, Manvel, Greater Hobby Area, South Belt /
Ellington, western Clear Lake, Brookside Village, Golfcrest /
Bellfort / Reveille, Edgebrook Area, Minnetex, Park Place,
Meadowbrook / Allendale, South Acres / Crestmont
Park and South Park.

LAT...LON 2970 9528 2961 9512 2937 9525 2951 9544
TIME...MOT...LOC 2258Z 049DEG 18KT 2958 9524

Special weather statement, May 26, 6:38 PM CDT, 15 minutes before

Special Weather Statement
National Weather Service Houston/Galveston TX
638 PM CDT SAT MAY 26 2018

TXZ213-227-237-238-270015-
Inland Brazoria TX-Inland Galveston TX-Inland Harris TX-Fort Bend TX-
638 PM CDT SAT MAY 26 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN GALVESTON...EAST
CENTRAL FORT BEND...NORTH CENTRAL BRAZORIA AND SOUTH CENTRAL HARRIS
COUNTIES UNTIL 715 PM CDT...

At 637 PM CDT, Doppler radar was tracking a strong thunderstorm over
northwestern Manvel, moving southwest at 15 mph.

Half inch to dime size hail has been reported with this storm and
winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Pearland, southern Missouri City, northern Friendswood, Alvin,
Manvel, Fresno, Greater Hobby Area, western South Belt / Ellington,
Arcola, Brookside Village, Iowa Colony, Bonney, Minnetex, Sienna
Plantation, South Acres / Crestmont Park, Fort Bend Houston,
southeastern Central Southwest and Juliff.

LAT...LON 2965 9531 2955 9521 2930 9542 2955 9559
TIME...MOT...LOC 2337Z 048DEG 14KT 2949 9536

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 4:02 PM CDT	Special Weather Statement	HGX	Chambers	43 min
May 26, 5:30 PM CDT	Special Weather Statement	HGX	Chambers	30 min
May 26, 5:36 PM CDT	Severe Thunderstorm Warning	HGX	Chambers, Liberty	24 min
May 26, 6:00 PM CDT	Special Weather Statement	HGX	Harris	45 min
May 26, 6:38 PM CDT	Special Weather Statement	HGX	Brazoria	37 min

Nearby

Severe Thunderstorm Warnings in Texas, 2018 Every severe thunderstorm warning 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.