Alert archive / Texas / Hard Freeze Warnings in 2017
Hard Freeze Warning 2, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this hard freeze warning at Jan 7, 2017, 5:02 AM CST for 22 counties in Texas. It took effect at Jan 7, 2017, 7:00 PM CST. It was in force for 14 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jan 7, 2017, 5:02 AM CST (11:02 UTC)
- In effect from
- Jan 7, 2017, 7:00 PM CST
- Expired
- Jan 8, 2017, 9:00 AM CST
- In force
- 14 hr
- Issued by
- NWS Houston/Galveston, TX
All 22 counties
Austin County, TX, Brazoria County, TX, Brazos County, TX, Burleson County, TX, Chambers County, TX, Colorado County, TX, Fort Bend County, TX, Grimes County, TX, Harris County, TX, Houston County, TX, Jackson County, TX, Liberty County, TX, Madison County, TX, Matagorda County, TX, Montgomery County, TX, Polk County, TX, San Jacinto County, TX, Trinity County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 97 km from the middle of the area, began a volume at 11:05 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, 11.0 hours before the alert went out and 245 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 525 m above ground
- 0-6 km bulk shear
- 81 kt
- 0-1 km storm-relative helicity
- -75 m²/s²
- 0-3 km storm-relative helicity
- -77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this hard freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Houston/Galveston, TX wrote its last area forecast discussion before this hard freeze warning went out at Jan 6, 5:33 PM CST, 11 hours 29 minutes earlier.
Area forecast discussion, Jan 6, 5:33 PM CST, 11 hours 29 minutes before
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</html>Hazardous weather outlook, Jan 6, 4:40 PM CST, 12 hours 22 minutes before
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Hard Freeze Warnings in Texas, 2017Every hard freeze warning in 2017
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.