Alert archive / Florida / Freeze Warnings in 2014

Freeze Warning 7, NWS Tampa Bay, FL

January 21, 2014Levy County, Florida

NWS Tampa Bay, FL issued this freeze warning at Jan 21, 2014, 4:23 AM EST for Levy County, Florida. It took effect at Jan 22, 2014, 4:00 AM EST. It was in force for 5 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 21, 2014, 4:23 AM EST (09:23 UTC)
In effect from
Jan 22, 2014, 4:00 AM EST
Expired
Jan 22, 2014, 9:14 AM EST
In force
5 hr
Issued by
NWS Tampa Bay, FL

County Levy County, FL

The radar

The Jacksonville radar (KJAX), 170 km from the middle of the area, began a volume at 09:28 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

Jacksonville, FL (KJAX), launched 00:00Z, 9.4 hours before the alert went out and 171 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-pSkew-T log-p diagram, Jacksonville, FL at 00:00Z on 2014-01-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 00:00Z on 2014-01-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1870 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 21, 4:23 AM ESTLake Wind AdvisoryTBWCharlotte, Citrus, DeSoto, Hardee, Hernando, Highlands and 9 more15 hr
Jan 21, 4:56 AM ESTRip Current StatementTBWCharlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota34 hr
Jan 21, 4:56 AM ESTHigh Surf AdvisoryTBWCharlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota34 hr
Jan 21, 12:46 PM ESTSpecial Weather StatementTBWHillsborough, Pasco, Pinellas59 min
Jan 21, 2:14 PM ESTWind Chill AdvisoryTBWHillsborough, Levy, Pasco, Polk19 hr
Jan 21, 2:32 PM ESTFreeze WatchTBWCharlotte, DeSoto, Hardee, Highlands, Hillsborough, Lee and 5 more25 hr
Jan 21, 2:32 PM ESTHard Freeze WatchTBWCitrus, Hernando, Levy25 hr
Jan 21, 2:34 PM ESTSpecial Weather StatementTBWCharlotte, DeSoto56 min

Nearby

Freeze Warnings in Florida, 2014Every freeze warning in 2014

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.