Alert archive / Florida / Wind Chill Advisories in 2018

Wind Chill Advisory 3, NWS Tampa Bay, FL

January 3, 201815 counties in Florida

NWS Tampa Bay, FL issued this wind chill advisory at Jan 3, 2018, 3:57 AM EST for 15 counties in Florida. It took effect at Jan 3, 2018, 10:00 PM EST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Jan 3, 2018, 3:57 AM EST (08:57 UTC)
In effect from
Jan 3, 2018, 10:00 PM EST
Expired
Jan 4, 2018, 7:15 AM EST
In force
9 hr
Issued by
NWS Tampa Bay, FL

Counties Charlotte County, FL, Citrus County, FL, DeSoto County, FL, Hardee County, FL, Hernando County, FL, Highlands County, FL, Hillsborough County, FL, Lee County, FL, Levy County, FL, Manatee County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Sarasota County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 27 km from the middle of the area, began a volume at 08:58 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 00:00Z, 9.0 hours before the alert went out and 178 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, Cape Canaveral, FL at 00:00Z on 2018-01-03Temperature 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, Cape Canaveral, FL at 00:00Z on 2018-01-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -38 square meters per square second.1939587897117Sfc1 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
863 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
-38 m²/s²
0-3 km storm-relative helicity
258 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 wind chill advisory 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 wind chill advisory went out at Jan 3, 3:56 AM EST, 1 minute earlier.

Area forecast discussion, Jan 3, 3:56 AM EST, 1 minute before
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Hazardous weather outlook, Jan 2, 4:45 AM EST, 23 hours 12 minutes before
Hazardous Weather Outlook
National Weather Service Tampa Bay Ruskin FL
445 AM EST Tue Jan 2 2018

FLZ043-050-052-056-057-061-139-142-148-149-151-155-160-162-165-
239-242-248-249-251-255-260-262-265-GMZ830-836-850-853-856-870-
873-876-022145-
Sumter-Pinellas-Polk-Hardee-Highlands-DeSoto-Coastal Levy-
Coastal Citrus-Coastal Hernando-Coastal Pasco-
Coastal Hillsborough-Coastal Manatee-Coastal Sarasota-
Coastal Charlotte-Coastal Lee-Inland Levy-Inland Citrus-
Inland Hernando-Inland Pasco-Inland Hillsborough-Inland Manatee-
Inland Sarasota-Inland Charlotte-Inland Lee-Tampa Bay waters-
Charlotte Harbor and Pine Island Sound-
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM-
Coastal waters from Englewood to Tarpon Springs FL out 20 NM-
Coastal waters from Bonita Beach to Englewood FL out 20 NM-
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM-
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM-
Waters from Bonita Beach to Englewood FL out 20 to 60 NM-
445 AM EST Tue Jan 2 2018

This Hazardous Weather Outlook is for West Central And Southwest
Florida.

.DAY ONE...Today and Tonight.

...EXCESSIVE COLD IMPACT...
A wind chill advisory remains in effect for a good portion of the
area this morning with brisk winds making it feel quite cold by
Florida standards. Make sure to dress in layers to protect
yourself from the cold. Overnight tonight and into early Wednesday
morning a very brief period of freezing rain may be possible
across northern Levy County.

...RIP CURRENT IMPACT...
High surf will produce rip currents along area beaches.

...MARINE IMPACTS...
Boating conditions will be hazardous to all small craft through
late tonight and mariners are urged to check with the latest
forecasts before finalizing plans.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

...EXCESSIVE COLD IMPACT...
Temperatures will be well below normal for much of the upcoming
week. Overnight lows near or below freezing can be expected across
portions of west central and southwest Florida into the weekend.
Wind chill values make it feel even colder with wind chill values
in the teens and 20s possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

McKaughan

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 3, 3:57 AM ESTFreeze WatchTBWCitrus, Hardee, Hernando, Highlands, Hillsborough, Levy and 3 more11 hr
Jan 3, 3:57 AM ESTHard Freeze WatchTBWLevy11 hr
Jan 3, 3:13 PM ESTFreeze WatchTBWDeSoto, Hardee, Hernando, Highlands, Hillsborough, Manatee and 3 more12 hr
Jan 3, 3:13 PM ESTFreeze WarningTBWHardee, Hernando, Highlands, Hillsborough, Pasco, Polk18 hr
Jan 3, 3:13 PM ESTHard Freeze WatchTBWCitrus, Hernando, Levy, Sumter12 hr
Jan 3, 3:13 PM ESTHard Freeze WarningTBWCitrus, Hernando, Levy, Sumter18 hr

Nearby

Wind Chill Advisories in Florida, 2018Every wind chill advisory 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.