Alert archive / Texas / Special Weather Statements in 2021
Special Weather Statement, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this special weather statement at Aug 15, 2021, 5:45 PM CDT for Harris County, Texas. It was in force for 60 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
- Aug 15, 2021, 5:45 PM CDT (22:45 UTC)
- Expired
- Aug 15, 2021, 6:45 PM CDT
- In force
- 60 min
- Issued by
- NWS Houston/Galveston, TX
- Hail
- 0.00 in
- Wind
- 30
County Harris County, TX
The radar
The Houston radar (KHGX), 25 km from the middle of the area, began a volume at 22:47 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, 10.8 hours before the alert went out and 203 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.
- Mixed-layer CAPE
- 1002 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 810 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- -55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>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 Aug 15, 3:35 PM CDT, 2 hours 10 minutes earlier.
Area forecast discussion, Aug 15, 3:35 PM CDT, 2 hours 10 minutes before
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Special weather statement, Aug 15, 3:53 PM CDT, 1 hour 52 minutes before
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</html>Special weather statement, Aug 15, 4:18 PM CDT, 1 hour 27 minutes before
Special Weather Statement
National Weather Service Houston/Galveston TX
418 PM CDT Sun Aug 15 2021
TXZ227-152145-
Fort Bend TX-
418 PM CDT Sun Aug 15 2021
...A thunderstorm will produce strong wind gusts portions of central
Fort Bend County through 445 PM CDT...
At 417 PM CDT, Doppler radar was tracking a strong thunderstorm over
southeastern Sugar Land, moving west at 15 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Sugar Land, southwestern Missouri City, Rosenberg, Stafford,
Richmond, First Colony, Pecan Grove, Pleak, Thompsons, Greatwood, New
Territory, Fifth Street, Riverstone, Cumings, Four Corners, Cinco
Ranch and northwestern Sienna Plantation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 2962 9554 2949 9556 2950 9582 2971 9577
TIME...MOT...LOC 2117Z 100DEG 13KT 2958 9562
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
CadySpecial weather statement, Aug 15, 5:31 PM CDT, 14 minutes before
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</html>Special weather statement, Aug 15, 5:45 PM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 7:14 PM CDT | Special Weather Statement | HGX | San Jacinto | 31 min |
| Aug 14, 10:15 PM CDT | Special Weather Statement | HGX | Harris | 30 min |
| Aug 15, 3:53 PM CDT | Special Weather Statement | HGX | Waller | 67 min |
| Aug 15, 4:18 PM CDT | Special Weather Statement | HGX | Fort Bend | 27 min |
| Aug 15, 4:28 PM CDT | Severe Thunderstorm Warning | HGX | Fort Bend | 32 min |
| Aug 15, 5:21 PM CDT | Areal Flood Advisory | HGX | Fort Bend, Harris | 54 min |
| Aug 15, 5:31 PM CDT | Special Weather Statement | HGX | Brazoria, Fort Bend, Jackson, Wharton | 59 min |
| Aug 15, 5:53 PM CDT | Areal Flood Advisory | HGX | Fort Bend | 52 min |
| Aug 15, 6:33 PM CDT | Special Weather Statement | HGX | Matagorda | 57 min |
Nearby
Special Weather Statements in Texas, 2021Every 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.