Alert archive / Texas / Wind Advisories in 2021
Wind Advisory 14, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this wind advisory at Dec 11, 2021, 2:44 AM CST for 4 counties in Texas. It took effect at Dec 11, 2021, 9:00 AM CST. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Dec 11, 2021, 2:44 AM CST (08:44 UTC)
- In effect from
- Dec 11, 2021, 9:00 AM CST
- Expired
- Dec 11, 2021, 6:00 PM CST
- In force
- 9 hr
- Issued by
- NWS Houston/Galveston, TX
Counties Brazoria County, TX, Galveston County, TX, Jackson County, TX, Matagorda County, TX
The radar
The Houston radar (KHGX), 77 km from the middle of the area, began a volume at 08:44 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
Corpus Christi, TX (KCRP), launched 00:00Z, 8.7 hours before the alert went out and 217 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
- 2440 J/kg
- Mixed-layer CIN
- -175 J/kg
- Mixed-layer LCL
- 865 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 161 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.5
The text
As transmitted.
219 WWUS74 KHGX 110844 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 244 AM CST Sat Dec 11 2021 TXZ335>338-436>439-111645- /O.NEW.KHGX.WI.Y.0014.211211T1500Z-211212T0000Z/ Coastal Jackson-Coastal Matagorda-Coastal Brazoria- Coastal Galveston-Matagorda Islands-Brazoria Islands- Galveston Island-Bolivar Peninsula- Including the cities of Palacios, Lake Jackson, Freeport, Clute, Texas City, Dickinson, La Marque, Surfside Beach, and Galveston 244 AM CST Sat Dec 11 2021 ...WIND ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 6 PM CST THIS EVENING... * WHAT...North winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...Coastal Jackson, Coastal Matagorda, Coastal Brazoria, Coastal Galveston, Matagorda Islands, Brazoria Islands, Galveston Island and Bolivar Peninsula Counties. * WHEN...From 9 AM this morning to 6 PM CST this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
1 follow-up statement
921 WWUS74 KHGX 111548 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 948 AM CST Sat Dec 11 2021 TXZ335>338-436>439-120000- /O.CON.KHGX.WI.Y.0014.000000T0000Z-211212T0000Z/ Coastal Jackson-Coastal Matagorda-Coastal Brazoria- Coastal Galveston-Matagorda Islands-Brazoria Islands- Galveston Island-Bolivar Peninsula- Including the cities of Palacios, Lake Jackson, Freeport, Clute, Texas City, Dickinson, La Marque, Surfside Beach, and Galveston 948 AM CST Sat Dec 11 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...North winds 20 to 25 mph with gusts up to 40 mph expected. * WHERE...Coastal Jackson, Coastal Matagorda, Coastal Brazoria, Coastal Galveston, Matagorda Islands, Brazoria Islands, Galveston Island and Bolivar Peninsula Counties. * WHEN...Through 6 PM CST this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 11, 12:28 AM CST | Special Weather Statement | HGX | Houston | 62 min |
| Dec 11, 12:49 AM CST | Special Weather Statement | HGX | Brazos, Burleson, Madison | 56 min |
| Dec 11, 1:40 AM CST | Special Weather Statement | HGX | Brazos, Burleson, Grimes, Houston, Madison, Trinity and 2 more | 65 min |
| Dec 11, 2:44 AM CST | Special Weather Statement | HGX | Washington | 61 min |
| Dec 11, 2:46 AM CST | Gale Warning | HGX | 17 hr | |
| Dec 11, 3:05 AM CST | Special Weather Statement | HGX | Montgomery, Polk, San Jacinto | 55 min |
Nearby
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.