Alert archive / Texas / Wind Advisories in 2021
Wind Advisory 9, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this wind advisory at Oct 15, 2021, 9:56 AM CDT for 6 counties in Texas. It took effect at Oct 15, 2021, 10:00 PM CDT. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Oct 15, 2021, 9:56 AM CDT (14:56 UTC)
- In effect from
- Oct 15, 2021, 10:00 PM CDT
- Expired
- Oct 16, 2021, 1:00 PM CDT
- In force
- 15 hr
- Issued by
- NWS Houston/Galveston, TX
Counties Brazoria County, TX, Chambers County, TX, Galveston County, TX, Harris County, TX, Jackson County, TX, Matagorda County, TX
The radar
The Houston radar (KHGX), 44 km from the middle of the area, began a volume at 14:57 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, 2.9 hours before the alert went out and 239 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
- 1169 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 649 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.1
The text
As transmitted.
701 WWUS74 KHGX 151456 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 956 AM CDT Fri Oct 15 2021 TXZ214-313-335>338-436>439-152300- /O.NEW.KHGX.WI.Y.0009.211016T0300Z-211016T1800Z/ Chambers-Coastal Harris-Coastal Jackson-Coastal Matagorda- Coastal Brazoria-Coastal Galveston-Matagorda Islands- Brazoria Islands-Galveston Island-Bolivar Peninsula- Including the cities of Winnie, Mont Belvieu, Anahuac, Stowell, Old River-Winfree, Pasadena, Baytown, Palacios, Lake Jackson, Freeport, Clute, Texas City, Dickinson, La Marque, Surfside Beach, and Galveston 956 AM CDT Fri Oct 15 2021 ...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 1 PM CDT SATURDAY... * WHAT...North winds 20 to 30 mph with gusts up to 40 mph expected. * WHERE...Chambers, Coastal Harris, Coastal Jackson, Coastal Matagorda, Coastal Brazoria, Coastal Galveston, Matagorda Islands, Brazoria Islands, Galveston Island and Bolivar Peninsula Counties. * WHEN...From 10 PM this evening to 1 PM CDT Saturday. * 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. && $$ Cady
2 follow-up statements
232 WWUS74 KHGX 152248 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 548 PM CDT Fri Oct 15 2021 TXZ214-313-335>338-436>439-161100- /O.CON.KHGX.WI.Y.0009.211016T0300Z-211016T1800Z/ Chambers-Coastal Harris-Coastal Jackson-Coastal Matagorda- Coastal Brazoria-Coastal Galveston-Matagorda Islands- Brazoria Islands-Galveston Island-Bolivar Peninsula- Including the cities of Winnie, Mont Belvieu, Anahuac, Stowell, Old River-Winfree, Pasadena, Baytown, Palacios, Lake Jackson, Freeport, Clute, Texas City, Dickinson, La Marque, Surfside Beach, and Galveston 548 PM CDT Fri Oct 15 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 1 PM CDT SATURDAY... * WHAT...North winds 20 to 30 mph with gusts up to 40 mph expected. * WHERE...Chambers, Coastal Harris, Coastal Jackson, Coastal Matagorda, Coastal Brazoria, Coastal Galveston, Matagorda Islands, Brazoria Islands, Galveston Island and Bolivar Peninsula Counties. * WHEN...From 10 PM this evening to 1 PM CDT Saturday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
891 WWUS74 KHGX 160847 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 347 AM CDT Sat Oct 16 2021 TXZ214-313-335>338-161000- /O.CAN.KHGX.WI.Y.0009.000000T0000Z-211016T1800Z/ Chambers-Coastal Harris-Coastal Jackson-Coastal Matagorda- Coastal Brazoria-Coastal Galveston- Including the cities of Winnie, Mont Belvieu, Anahuac, Stowell, Old River-Winfree, Pasadena, Baytown, Palacios, Lake Jackson, Freeport, Clute, Texas City, Dickinson, and La Marque 347 AM CDT Sat Oct 16 2021 ...WIND ADVISORY IS CANCELLED... Breezy north winds are still anticipated today, though speeds should remain below wind advisory criteria. $$ TXZ436>439-161800- /O.CON.KHGX.WI.Y.0009.000000T0000Z-211016T1800Z/ Matagorda Islands-Brazoria Islands-Galveston Island- Bolivar Peninsula- Including the cities of Surfside Beach and Galveston 347 AM CDT Sat Oct 16 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON... * WHAT...North winds 25 to 30 mph with gusts up to 40 mph. * WHERE...Brazoria Islands, Matagorda Islands, Bolivar Peninsula and Galveston Island Counties. * WHEN...Until 1 PM CDT this afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 15, 10:05 AM CDT | Gale Warning | HGX | 26 hr | |
| Oct 15, 10:05 AM CDT | Low Water Advisory | HGX | 18 hr | |
| Oct 15, 3:22 PM CDT | Special Weather Statement | HGX | Harris | 23 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.