Alert archive / Florida / Freeze Warnings in 2015

Freeze Warning 1, NWS Tampa Bay, FL

January 7, 2015Citrus County, Hernando County, Sumter County, Florida

NWS Tampa Bay, FL issued this freeze warning at Jan 7, 2015, 10:23 AM EST for Citrus County, Hernando County, Sumter County, Florida. It took effect at Jan 8, 2015, 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 7, 2015, 10:23 AM EST (15:23 UTC)
In effect from: Jan 8, 2015, 1:00 AM EST
Expired: Jan 8, 2015, 9:00 AM EST
In force: 8 hr
Issued by: NWS Tampa Bay, FL

Counties Citrus County, FL, Hernando County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 111 km from the middle of the area, began a volume at 15:25 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 3.4 hours before the alert went out and 183 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: 2460 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 79 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 Tampa Bay, FL wrote its last area forecast discussion before this freeze warning went out at Jan 7, 10:22 AM EST, 1 minute earlier.

Area forecast discussion, Jan 7, 10:22 AM EST, 1 minute before

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Hazardous weather outlook, Jan 7, 5:15 AM EST, 5 hours 8 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 7, 4:24 AM EST	Gale Warning	TBW		29 hr
Jan 7, 4:24 AM EST	Small Craft Advisory	TBW		36 hr
Jan 7, 10:22 AM EST	Rip Current Statement	TBW	Charlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota	30 hr
Jan 7, 10:22 AM EST	High Surf Advisory	TBW	Charlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota	18 hr
Jan 7, 10:22 AM EST	Wind Chill Advisory	TBW	Charlotte, Citrus, DeSoto, Hardee, Hernando, Highlands and 8 more	24 hr
Jan 7, 10:23 AM EST	Hard Freeze Warning	TBW	Levy	24 hr

Nearby

Freeze Warnings in Florida, 2015 Every freeze warning in 2015

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.