Alert archive / Florida / Freeze Warnings in 2016

Freeze Warning 5, NWS Tampa Bay, FL

January 23, 20165 counties in Florida

NWS Tampa Bay, FL issued this freeze warning at Jan 23, 2016, 2:49 PM EST for 5 counties in Florida. It took effect at Jan 24, 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 23, 2016, 2:49 PM EST (19:49 UTC)
In effect from
Jan 24, 2016, 1:00 AM EST
Expired
Jan 24, 2016, 9:00 AM EST
In force
8 hr
Issued by
NWS Tampa Bay, FL

Counties Citrus County, FL, Hernando County, FL, Levy County, FL, Pasco County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 115 km from the middle of the area, began a volume at 19:46 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, 7.8 hours before the alert went out and 194 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 12:00Z on 2016-01-23Temperature 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 12:00Z on 2016-01-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 square meters per square second.1939587897117136156175Sfc1 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
882 m above ground
0-6 km bulk shear
99 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
-84 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 23, 10:39 AM EST, 4 hours 10 minutes earlier.

Area forecast discussion, Jan 23, 10:39 AM EST, 4 hours 10 minutes before
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Hazardous weather outlook, Jan 23, 5:46 AM EST, 9 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
546 AM EST SAT JAN 23 2016

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-
873-876-241100-
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-
546 AM EST SAT JAN 23 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST
FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

...HIGH WIND IMPACT...
STRONG AND GUSTY WINDS IN THE 20 TO 30 MPH RANGE WITH HIGHER GUSTS
NEAR THE COAST WILL AFFECT THE REGION. THESE STRONG WINDS MAY
BREAK SMALL TWIGS FROM TREES AND BLOW AROUND ANY UNSECURED OUTDOOR
OBJECTS. HIGH PROFILE VEHICLES SHOULD USE EXTRA CAUTION ESPECIALLY
IF TRAVELING OVER BRIDGES OR HIGH OVERPASSES.

...COASTAL FLOOD IMPACT...
STRONG ONSHORE WINDS WILL CONTINUE TODAY AND KEEP FAVORABLE
CONDITIONS FOR COASTAL FLOODING. COASTAL RESIDENTS SHOULD BE
ALERT AND TAKE ACTION TO PROTECT PROPERTY.

...RIP CURRENT IMPACT...
HIGH SURF WILL PRODUCE RIP CURRENTS ALONG AREA BEACHES.

...MARINE IMPACTS...
WIND SPEEDS OF 20 TO 33 KNOTS WITH GUSTS TO GALE FORCE WILL
CREATE HAZARDOUS BOATING CONDITIONS FOR SMALL CRAFT OPERATORS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

...THUNDERSTORM IMPACT...
THUNDERSTORMS ARE EXPECTED FOR WEDNESDAY THROUGH THURSDAY.
THUNDERSTORMS WILL BE CAPABLE OF PRODUCING STRONG GUSTY
WINDS...LOCALLY HEAVY RAINS...AND FREQUENT DEADLY LIGHTNING
STRIKES.

...EXCESSIVE COLD IMPACT...
FREEZING TEMPERATURES WILL BE POSSIBLE MAINLY ACROSS THE NATURE
COAST FOR TONIGHT AND SUNDAY NIGHT. MAKE SURE TO DRESS IN LAYERS
TO PROTECT YOURSELF FROM THE COLD. BRING PETS AND COLD SENSITIVE
PLANTS INDOORS.

...MARINE IMPACTS...
WINDS WILL INCREASE TO AROUND 20 KNOTS BEHIND A COLD FRONT ON
FRIDAY AND WILL CREATE HAZARDOUS BOATING CONDITIONS FOR SMALL
CRAFT OPERATORS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.

HUBBARD

In the hours before

Local storm report, Jan 23, 10:46 AM EST, 4 hours 3 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jan 23, 4:14 AM ESTFreeze WatchTBWCitrus, Hernando, Levy, Sumter11 hr
Jan 23, 10:47 AM ESTSmall Craft AdvisoryTBW23 hr
Jan 23, 2:59 PM ESTWind Chill AdvisoryTBWCharlotte, DeSoto, Hardee, Highlands, Hillsborough, Lee and 5 more18 hr

Nearby

Freeze Warnings in Florida, 2016Every 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.