Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Houston/Galveston, TX

March 17, 2021Fort Bend County, Texas

NWS Houston/Galveston, TX issued this special weather statement at Mar 17, 2021, 10:39 AM CDT for Fort Bend County, Texas. It was in force for 36 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 17, 2021, 10:39 AM CDT (15:39 UTC)
Expired: Mar 17, 2021, 11:15 AM CDT
In force: 36 min
Issued by: NWS Houston/Galveston, TX

County Fort Bend County, TX

The radar

The Houston radar (KHGX), 55 km from the middle of the area, began a volume at 15:41 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, 3.7 hours before the alert went out and 245 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: 458 J/kg
Mixed-layer CIN: -397 J/kg
Mixed-layer LCL: 1132 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 158 m²/s²
0-3 km storm-relative helicity: 247 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

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 17, 10:31 AM CDT, 8 minutes earlier.

Area forecast discussion, Mar 17, 10:31 AM CDT, 8 minutes before

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In the hours before

Special weather statement, Mar 17, 8:19 AM CDT, 2 hours 20 minutes before

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Special weather statement, Mar 17, 9:04 AM CDT, 1 hour 35 minutes before

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Special weather statement, Mar 17, 10:04 AM CDT, 35 minutes before

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Special weather statement, Mar 17, 10:30 AM CDT, 9 minutes before

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Special weather statement, Mar 17, 10:39 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service Houston/Galveston TX
1039 AM CDT Wed Mar 17 2021

TXZ213-227-237-171615-
Inland Brazoria TX-Inland Harris TX-Fort Bend TX-
1039 AM CDT Wed Mar 17 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL FORT BEND...NORTHERN
BRAZORIA AND SOUTH CENTRAL HARRIS COUNTIES UNTIL 1115 AM CDT...

At 1038 AM CDT, Doppler radar was tracking a strong thunderstorm over
Pleak, or near Rosenberg, moving northeast at 35 mph.

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

Locations impacted include...
Pearland, Sugar Land, Missouri City, Rosenberg, Stafford, Bellaire,
West University Place, Richmond, northwestern Manvel, Hunters Creek
Village, Bunker Hill Village, Piney Point Village, Midtown Houston,
Greenway / Upper Kirby Area, Fresno, Neartown / Montrose, Town West,
Pecan Grove, Memorial Park and University Place.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2939 9580 2952 9592 2982 9541 2953 9528
TIME...MOT...LOC 1538Z 245DEG 32KT 2951 9577

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 17, 8:19 AM CDT	Special Weather Statement	HGX	Houston, Polk, Trinity, Walker	71 min
Mar 17, 9:04 AM CDT	Special Weather Statement	HGX	Montgomery, San Jacinto	41 min
Mar 17, 10:04 AM CDT	Special Weather Statement	HGX	Fort Bend	26 min
Mar 17, 10:30 AM CDT	Special Weather Statement	HGX	Fort Bend	45 min
Mar 17, 11:11 AM CDT	Severe Thunderstorm Warning	HGX	Chambers, Fort Bend, Harris, Liberty, Montgomery	34 min
Mar 17, 11:45 AM CDT	Special Weather Statement	HGX	Liberty	45 min
Mar 17, 12:29 PM CDT	Special Weather Statement	HGX	Liberty	46 min
Mar 17, 1:12 PM CDT	Special Marine Warning	HGX		33 min
Mar 17, 1:47 PM CDT	Special Marine Warning	HGX		43 min
Mar 17, 3:24 PM CDT	Small Craft Advisory	HGX		34 hr

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.