Alert archive / Texas / Wind Advisories in 2021
Wind Advisory 12, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this wind advisory at Nov 18, 2021, 8:01 PM CST for Galveston County, Texas. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Nov 18, 2021, 8:01 PM CST (02:01 UTC)
- Expired
- Nov 19, 2021, 3:00 AM CST
- In force
- 7 hr
- Issued by
- NWS Houston/Galveston, TX
County Galveston County, TX
The radar
The Houston radar (KHGX), 32 km from the middle of the area, began a volume at 02:03 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, 2.0 hours before the alert went out and 180 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 546 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
622 WWUS74 KHGX 190201 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 801 PM CST Thu Nov 18 2021 TXZ438-439-190900- /O.NEW.KHGX.WI.Y.0012.211119T0201Z-211119T0900Z/ Galveston Island-Bolivar Peninsula- Including the city of Galveston 801 PM CST Thu Nov 18 2021 ...WIND ADVISORY IN EFFECT UNTIL 3 AM CST FRIDAY... * WHAT...North to northeast winds 25 to 30 mph with gusts up to 35 mph. * WHERE...Galveston Island and Bolivar Peninsula. * WHEN...Until 3 AM CST Friday. * 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. && $$
1 follow-up statement
397 WWUS74 KHGX 190207 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 807 PM CST Thu Nov 18 2021 TXZ438-439-190900- /O.CON.KHGX.WI.Y.0012.000000T0000Z-211119T0900Z/ Galveston Island-Bolivar Peninsula- Including the city of Galveston 807 PM CST Thu Nov 18 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST FRIDAY... * WHAT...North to northeast winds 25 to 30 mph with gusts up to 35 mph. * WHERE...Galveston Island and Bolivar Peninsula. * WHEN...Until 3 AM CST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 19, 3:16 AM CST | Small Craft Advisory | HGX | 3 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.