Alert archive / Alabama / Hard Freeze Warnings in 2018
Hard Freeze Warning 4, NWS Mobile, AL
NWS Mobile, AL issued this hard freeze warning at Jan 16, 2018, 4:15 AM CST for Baldwin County, Covington County, Mobile County, Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida. It took effect at Jan 17, 2018, 12:00 AM CST. It was in force for 33 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 16, 2018, 4:15 AM CST (10:15 UTC)
- In effect from
- Jan 17, 2018, 12:00 AM CST
- Expired
- Jan 18, 2018, 9:00 AM CST
- In force
- 33 hr
- Issued by
- NWS Mobile, AL
Counties Baldwin County, AL, Covington County, AL, Mobile County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL
The radar
The Mobile radar (KMOB), 97 km from the middle of the area, began a volume at 10:14 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
Birmingham, AL (KBMX), launched 00:00Z, 10.3 hours before the alert went out and 272 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
- 2034 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 139 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 Mobile, AL wrote its last area forecast discussion before this hard freeze warning went out at Jan 15, 11:48 PM CST, 4 hours 27 minutes earlier.
Area forecast discussion, Jan 15, 11:48 PM CST, 4 hours 27 minutes before
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</html>Hazardous weather outlook, Jan 15, 4:30 PM CST, 11 hours 45 minutes before
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Hard Freeze Warnings in Alabama, 2018Hard Freeze Warnings in Florida, 2018Every hard freeze warning in 2018
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.