Alert archive / Texas / Wind Advisories in 2021
Wind Advisory 3, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this wind advisory at Mar 31, 2021, 5:02 AM CDT for Brazoria County, Galveston County, Matagorda County, Texas. It took effect at Mar 31, 2021, 4:00 PM CDT. It was in force for 17 hr.
The area
The counties it named.
The facts
- Issued
- Mar 31, 2021, 5:02 AM CDT (10:02 UTC)
- In effect from
- Mar 31, 2021, 4:00 PM CDT
- Expired
- Apr 1, 2021, 9:00 AM CDT
- In force
- 17 hr
- Issued by
- NWS Houston/Galveston, TX
Counties Brazoria County, TX, Galveston County, TX, Matagorda County, TX
The radar
The Houston radar (KHGX), 54 km from the middle of the area, began a volume at 10:02 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, 10.0 hours before the alert went out and 241 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
- 470 J/kg
- Mixed-layer CIN
- -274 J/kg
- Mixed-layer LCL
- 1033 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 210 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
367 WWUS74 KHGX 311002 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 502 AM CDT Wed Mar 31 2021 TXZ436>439-010600- /O.NEW.KHGX.WI.Y.0003.210331T2100Z-210401T1400Z/ Matagorda Islands-Brazoria Islands-Galveston Island- Bolivar Peninsula- Including the cities of Surfside Beach and Galveston 502 AM CDT Wed Mar 31 2021 ...WIND ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 9 AM CDT THURSDAY... * WHAT...North to northeast winds 20 to 30 mph with gusts up to 40 mph expected. * WHERE...Matagorda Islands, Brazoria Islands, Galveston Island and the Bolivar Peninsula. * WHEN...From 4 PM this afternoon to 9 AM CDT Thursday. * 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. && $$
6 follow-up statements
462 WWUS74 KHGX 311229 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 729 AM CDT Wed Mar 31 2021 TXZ438-439-311600- /O.NEW.KHGX.FG.Y.0021.210331T1229Z-210331T1600Z/ /O.CON.KHGX.WI.Y.0003.210331T2100Z-210401T1400Z/ Galveston Island-Bolivar Peninsula- Including the city of Galveston 729 AM CDT Wed Mar 31 2021 ...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM CDT THIS MORNING... ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 9 AM CDT THURSDAY... * WHAT...For the Dense Fog Advisory, visibility reduced to around 1/4 mile in dense fog. For the Wind Advisory, northeast winds 20 to 30 mph with gusts up to 40 mph expected. * WHERE...Galveston Island and the Bolivar Peninsula. * WHEN...For the Dense Fog Advisory, until 11 AM CDT this morning. For the Wind Advisory, from 4 PM this afternoon to 9 AM CDT Thursday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Hazardous driving conditions due to low visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ TXZ436-437-311600- /O.CON.KHGX.WI.Y.0003.210331T2100Z-210401T1400Z/ Matagorda Islands-Brazoria Islands- Including the city of Surfside Beach 729 AM CDT Wed Mar 31 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 9 AM CDT THURSDAY... * WHAT...Northeast winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...Brazoria Islands and Matagorda Islands Counties. * WHEN...From 4 PM this afternoon to 9 AM CDT Thursday. * 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. && $$
244 WWUS74 KHGX 311608 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 1108 AM CDT Wed Mar 31 2021 TXZ438-439-010015- /O.EXP.KHGX.FG.Y.0021.000000T0000Z-210331T1600Z/ /O.CON.KHGX.WI.Y.0003.210331T2100Z-210401T1400Z/ Galveston Island-Bolivar Peninsula- Including the city of Galveston 1108 AM CDT Wed Mar 31 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 9 AM CDT THURSDAY... ...DENSE FOG ADVISORY HAS EXPIRED... * WHAT...Northeast winds 20 to 30 mph with gusts up to 40 mph expected. * WHERE...Galveston Island and the Bolivar Peninsula. * WHEN...For the Dense Fog Advisory, until 11 AM CDT this morning. For the Wind Advisory, from 4 PM this afternoon to 9 AM CDT Thursday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ TXZ436-437-010015- /O.CON.KHGX.WI.Y.0003.210331T2100Z-210401T1400Z/ Matagorda Islands-Brazoria Islands- Including the city of Surfside Beach 1108 AM CDT Wed Mar 31 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 9 AM CDT THURSDAY... * WHAT...Northeast winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...Brazoria Islands and Matagorda Islands Counties. * WHEN...From 4 PM this afternoon to 9 AM CDT Thursday. * 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. && $$
300 WWUS74 KHGX 312056 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 356 PM CDT Wed Mar 31 2021 TXZ436>439-010500- /O.CON.KHGX.WI.Y.0003.210331T2100Z-210401T1400Z/ Matagorda Islands-Brazoria Islands-Galveston Island- Bolivar Peninsula- Including the cities of Surfside Beach and Galveston 356 PM CDT Wed Mar 31 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THURSDAY... * WHAT...Northeast winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...Brazoria Islands and Matagorda Islands Counties. * WHEN...From 4 PM this afternoon to 9 AM CDT Thursday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
842 WWUS74 KHGX 010237 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 937 PM CDT Wed Mar 31 2021 TXZ436>439-011400- /O.CON.KHGX.WI.Y.0003.000000T0000Z-210401T1400Z/ Matagorda Islands-Brazoria Islands-Galveston Island- Bolivar Peninsula- Including the cities of Surfside Beach and Galveston 937 PM CDT Wed Mar 31 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THURSDAY... * WHAT...Northeast winds 15 to 25 mph with gusts up to 40 mph possible. * WHERE...Brazoria Islands and Matagorda Islands Counties. * WHEN...From 4 PM this afternoon to 9 AM CDT Thursday. * 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. && $$
653 WWUS74 KHGX 011039 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 539 AM CDT Thu Apr 1 2021 TXZ436>439-011400- /O.CON.KHGX.WI.Y.0003.000000T0000Z-210401T1400Z/ Matagorda Islands-Brazoria Islands-Galveston Island- Bolivar Peninsula- Including the cities of Surfside Beach and Galveston 539 AM CDT Thu Apr 1 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Northeast winds 15 to 25 mph with gusts up to 30 mph. * WHERE...Brazoria Islands, Matagorda Islands, Bolivar Peninsula and Galveston Island Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
921 WWUS74 KHGX 011428 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 928 AM CDT Thu Apr 1 2021 TXZ436>439-011530- /O.EXP.KHGX.WI.Y.0003.000000T0000Z-210401T1400Z/ Matagorda Islands-Brazoria Islands-Galveston Island- Bolivar Peninsula- Including the cities of Surfside Beach and Galveston 928 AM CDT Thu Apr 1 2021 ...WIND ADVISORY HAS EXPIRED... Winds are now below Wind Advisory threshold and are expected to continue to decrease as high pressure settles across TX. $$
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 9:23 PM CDT | Marine Dense Fog Advisory | HGX | 15 hr | |
| Mar 31, 3:17 AM CDT | Gale Warning | HGX | 34 hr | |
| Mar 31, 7:29 AM CDT | Dense Fog Advisory | HGX | Galveston | 4 hr |
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.