Alert archive / Florida / Freeze Warnings in 2016

Freeze Warning 6, NWS Jacksonville, FL

January 18, 20166 counties in Florida

NWS Jacksonville, FL issued this freeze warning at Jan 18, 2016, 3:02 AM EST for 6 counties in Florida. It took effect at Jan 19, 2016, 1:00 AM EST. It was in force for 8 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 18, 2016, 3:02 AM EST (08:02 UTC)
In effect from: Jan 19, 2016, 1:00 AM EST
Expired: Jan 19, 2016, 9:00 AM EST
In force: 8 hr
Issued by: NWS Jacksonville, FL

Counties Baker County, FL, Bradford County, FL, Gilchrist County, FL, Nassau County, FL, Suwannee County, FL, Union County, FL

The radar

The Jacksonville radar (KJAX), 77 km from the middle of the area, began a volume at 08:08 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 8.0 hours before the alert went out and 185 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1642 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: -96 m²/s²
0-3 km storm-relative helicity: -66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jacksonville, FL wrote its last area forecast discussion before this freeze warning went out at Jan 17, 3:40 PM EST, 11 hours 22 minutes earlier.

Area forecast discussion, Jan 17, 3:40 PM EST, 11 hours 22 minutes before

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Hazardous weather outlook, Jan 17, 3:45 PM EST, 11 hours 17 minutes before

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The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 18, 2:23 PM EST	Freeze Watch	JAX	Duval, Flagler, Nassau	12 hr
Jan 18, 2:23 PM EST	Hard Freeze Watch	JAX	Baker, Bradford, Gilchrist, Nassau, Suwannee, Union	12 hr
Jan 18, 2:23 PM EST	Hard Freeze Warning	JAX	Appling, Atkinson, Bacon, Brantley, Camden, Clinch and 6 more	19 hr

Nearby

Freeze Warnings in Florida, 2016 Every freeze warning in 2016

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.