Alert archive / Texas / Wind Advisories in 2021
Wind Advisory 4, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this wind advisory at Apr 13, 2021, 10:20 PM CDT for 6 counties in Texas. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Apr 13, 2021, 10:20 PM CDT (03:20 UTC)
- Expired
- Apr 14, 2021, 3:00 AM CDT
- In force
- 5 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 03:22 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, 3.3 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
- 7 J/kg
- Mixed-layer CIN
- -558 J/kg
- Mixed-layer LCL
- 548 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.7
The text
As transmitted.
597 WWUS74 KHGX 140320 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 1020 PM CDT Tue Apr 13 2021 TXZ214-313-337-338-437>439-140600- /O.NEW.KHGX.WI.Y.0004.210414T0320Z-210414T0600Z/ Chambers-Coastal Harris-Coastal Brazoria-Coastal Galveston- Brazoria Islands-Galveston Island-Bolivar Peninsula- Including the cities of Winnie, Mont Belvieu, Anahuac, Stowell, Old River-Winfree, Pasadena, Baytown, Lake Jackson, Freeport, Clute, Texas City, Dickinson, La Marque, Surfside Beach, and Galveston 1020 PM CDT Tue Apr 13 2021 ...WIND ADVISORY IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...East winds 15 to 25 mph with gusts up to 35 mph. * WHERE...Chambers, Coastal Harris, Coastal Brazoria, Coastal Galveston, Brazoria Islands, Galveston Island and Bolivar Peninsula Counties. * WHEN...Until 1 AM CDT Wednesday. * 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. && $$
1 follow-up statement
508 WWUS74 KHGX 140442 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 1142 PM CDT Tue Apr 13 2021 TXZ335-336-436-140800- /O.EXB.KHGX.WI.Y.0004.000000T0000Z-210414T0800Z/ Coastal Jackson-Coastal Matagorda-Matagorda Islands- Including the city of Palacios 1142 PM CDT Tue Apr 13 2021 ...WIND ADVISORY IN EFFECT UNTIL 3 AM CDT WEDNESDAY... * WHAT...East winds 15 to 25 mph with gusts up to 35 mph. * WHERE...Coastal Jackson, Coastal Matagorda and Matagorda Islands Counties. * WHEN...Until 3 AM CDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ TXZ214-313-337-338-437>439-140800- /O.EXT.KHGX.WI.Y.0004.000000T0000Z-210414T0800Z/ Chambers-Coastal Harris-Coastal Brazoria-Coastal Galveston- Brazoria Islands-Galveston Island-Bolivar Peninsula- Including the cities of Winnie, Mont Belvieu, Anahuac, Stowell, Old River-Winfree, Pasadena, Baytown, Lake Jackson, Freeport, Clute, Texas City, Dickinson, La Marque, Surfside Beach, and Galveston 1142 PM CDT Tue Apr 13 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL 3 AM CDT WEDNESDAY... * WHAT...East winds 15 to 25 mph with gusts up to 35 mph. * WHERE...Chambers, Coastal Harris, Coastal Brazoria, Coastal Galveston, Brazoria Islands, Galveston Island and Bolivar Peninsula Counties. * WHEN...Until 3 AM CDT Wednesday. * 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 |
|---|---|---|---|---|
| Apr 13, 8:17 PM CDT | Small Craft Advisory | HGX | 7 hr | |
| Apr 14, 3:19 AM CDT | Small Craft Advisory | HGX | 13 hr | |
| Apr 14, 7:58 AM CDT | Coastal Flood Advisory | HGX | Chambers, Galveston, Harris | 11 hr |
| Apr 14, 9:36 AM CDT | Rip Current Statement | HGX | Brazoria, Galveston, Matagorda | 10 hr |
| Apr 14, 4:20 PM CDT | Special Weather Statement | HGX | Fort Bend | 25 min |
| Apr 14, 6:34 PM CDT | Special Weather Statement | HGX | Fort Bend | 26 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.