Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Houston/Galveston, TX

March 23, 2021Galveston County, Texas

NWS Houston/Galveston, TX issued this special weather statement at Mar 23, 2021, 6:02 AM CDT for Galveston County, Texas. It was in force for 43 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: Mar 23, 2021, 6:02 AM CDT (11:02 UTC)
Expired: Mar 23, 2021, 6:45 AM CDT
In force: 43 min
Issued by: NWS Houston/Galveston, TX

County Galveston County, TX

The radar

The Houston radar (KHGX), 16 km from the middle of the area, began a volume at 11:04 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 00:00Z, 11.0 hours before the alert went out and 208 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: 82 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 715 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 183 m²/s²
0-3 km storm-relative helicity: 405 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Mar 23, 5:40 AM CDT, 22 minutes earlier.

Area forecast discussion, Mar 23, 5:40 AM CDT, 22 minutes before

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In the hours before

Special weather statement, Mar 23, 3:20 AM CDT, 2 hours 42 minutes before

Special Weather Statement
National Weather Service Houston/Galveston TX
320 AM CDT Tue Mar 23 2021

TXZ210>212-230900-
Waller TX-Colorado TX-Austin TX-
320 AM CDT Tue Mar 23 2021

...Strong Thunderstorms moving out of Fayette County...

At 319 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Fayetteville to 9 miles southeast of La
Grange to near Weimar. Movement was east at 40 mph.

Pea size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Sealy, Bellville, Columbus, Shelby, Weimar, San Felipe, Industry,
Frelsburg, New Ulm and Cat Spring.

A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
southeastern Texas.

LAT...LON 2980 9671 2996 9657 3003 9661 3004 9609
      2978 9607 2964 9613 2968 9683
TIME...MOT...LOC 0819Z 276DEG 35KT 2996 9675 2985 9674 2975 9680

Special weather statement, Mar 23, 3:44 AM CDT, 2 hours 18 minutes before

Special Weather Statement
National Weather Service Houston/Galveston TX
344 AM CDT Tue Mar 23 2021

TXZ210-211-230915-
Colorado TX-Austin TX-
344 AM CDT Tue Mar 23 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL COLORADO...NORTHERN
WHARTON AND SOUTHEASTERN AUSTIN COUNTIES UNTIL 415 AM CDT...

At 344 AM CDT, Doppler radar was tracking a strong thunderstorm 10
miles northeast of Sublime, or 11 miles southwest of Columbus, moving
east at 30 mph.

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

Locations impacted include...
Eagle Lake, Sheridan, Altair, Garwood, Nada and Rock Island.

LAT...LON 2967 9664 2964 9616 2952 9630 2941 9635
      2931 9652 2955 9677
TIME...MOT...LOC 0844Z 277DEG 26KT 2956 9665

Special weather statement, Mar 23, 4:06 AM CDT, 1 hour 56 minutes before

Special Weather Statement
National Weather Service Houston/Galveston TX
406 AM CDT Tue Mar 23 2021

TXZ199-210>213-226-227-235-231000-
Waller TX-Wharton TX-Colorado TX-Inland Harris TX-Fort Bend TX-
Montgomery TX-Austin TX-Inland Jackson TX-
406 AM CDT Tue Mar 23 2021

...SPECIAL WEATHER STATEMENT...

At 406 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Prairie View to near Eagle Lake to near Ezzell.
Movement was east at 30 mph.

Winds in excess of 30 mph will be possible with these storms.

Locations impacted include...
Sugar Land, Rosenberg, Stafford, Katy, Richmond, El Campo, Tomball,
Wharton, Jersey Village, Sealy, Hempstead, Prairie View, Brookshire,
Hunters Creek Village, Eagle Lake, Bunker Hill Village, Piney Point
Village, Spring Branch North, Greater Greenspoint and Mission Bend.

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.

&&

LAT...LON 2933 9657 2933 9656 2945 9667 2965 9639
      3015 9602 3001 9531 2945 9573 2897 9641
      2914 9683
TIME...MOT...LOC 0906Z 288DEG 24KT 3007 9600 2963 9633 2924 9688

Special weather statement, Mar 23, 4:28 AM CDT, 1 hour 34 minutes before

Special Weather Statement
National Weather Service Houston/Galveston TX
428 AM CDT Tue Mar 23 2021

TXZ178-179-200-231030-
San Jacinto TX-Northern Liberty TX-Polk TX-
428 AM CDT Tue Mar 23 2021

...SPECIAL WEATHER STATEMENT...

At 427 AM CDT, Doppler radar was tracking a strong thunderstorm over
Goodrich, or 7 miles south of Livingston, moving east at 30 mph.

Winds in excess of 30 mph will be possible with this storm.

Locations impacted include...
Livingston, Shepherd, Goodrich, Romayor, Rye and Segno.

LAT...LON 3049 9473 3041 9471 3048 9502 3071 9495
      3065 9457 3049 9454
TIME...MOT...LOC 0927Z 285DEG 27KT 3061 9490

Special weather statement, Mar 23, 5:50 AM CDT, 12 minutes before

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Special weather statement, Mar 23, 6:02 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 22, 11:18 PM CDT	Special Weather Statement	HGX	Brazos, Burleson, Madison	87 min
Mar 22, 11:57 PM CDT	Severe Thunderstorm Warning	HGX	Brazos, Burleson	48 min
Mar 23, 12:30 AM CDT	Small Craft Advisory	HGX		4 hr
Mar 23, 12:43 AM CDT	Severe Thunderstorm Warning	HGX	Brazos, Grimes, Madison	47 min
Mar 23, 1:16 AM CDT	Special Weather Statement	HGX	Burleson, Grimes, Washington	44 min
Mar 23, 1:19 AM CDT	Severe Thunderstorm Warning	HGX	Grimes, Houston, Madison, Trinity, Walker	41 min
Mar 23, 1:55 AM CDT	Severe Thunderstorm Warning	HGX	Polk, San Jacinto, Trinity, Walker	35 min
Mar 23, 2:29 AM CDT	Severe Thunderstorm Warning	HGX	Polk, Trinity	31 min
Mar 23, 3:16 AM CDT	Severe Thunderstorm Warning	HGX	Colorado	26 min
Mar 23, 3:20 AM CDT	Special Weather Statement	HGX	Austin	40 min
Mar 23, 3:44 AM CDT	Special Weather Statement	HGX	Colorado	31 min
Mar 23, 4:06 AM CDT	Special Weather Statement	HGX	Fort Bend, Waller, Wharton	54 min
Mar 23, 4:28 AM CDT	Special Weather Statement	HGX	Polk	62 min
Mar 23, 5:50 AM CDT	Special Weather Statement	HGX	Brazoria	55 min

Nearby

Special Weather Statements in Texas, 2021 Every special weather statement in 2021

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.