Alert archive / Florida / Freeze Warnings in 2021
Freeze Warning 2, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this freeze warning at Jan 18, 2021, 3:39 AM EST for Citrus County, Hernando County, Levy County, Florida. It took effect at Jan 19, 2021, 3:00 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 18, 2021, 3:39 AM EST (08:39 UTC)
- In effect from
- Jan 19, 2021, 3:00 AM EST
- Expired
- Jan 19, 2021, 8:00 AM EST
- In force
- 5 hr
- Issued by
- NWS Tampa Bay, FL
Counties Citrus County, FL, Hernando County, FL, Levy County, FL
The radar
The Tampa radar (KTBW), 134 km from the middle of the area, began a volume at 08:39 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
Tampa Bay, FL (KTBW), launched 00:00Z, 8.7 hours before the alert went out and 134 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.
- Mixed-layer CAPE
- 12 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 916 m above ground
- 0-6 km bulk shear
- 80 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
262 WWUS72 KTBW 180839 NPWTBW URGENT - WEATHER MESSAGE National Weather Service Tampa Bay Ruskin FL 339 AM EST Mon Jan 18 2021 FLZ139-239-242-248-191300- /O.NEW.KTBW.FZ.W.0002.210119T0800Z-210119T1300Z/ Coastal Levy-Inland Levy-Inland Citrus-Inland Hernando- Including the cities of Cedar Key, Yankeetown, Chiefland, Bronson, Williston, Inverness, Brooksville, and Spring Hill 339 AM EST Mon Jan 18 2021 ...FREEZE WARNING IN EFFECT FROM 3 AM TO 8 AM EST TUESDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Coastal Levy, Inland Levy, Inland Citrus and Inland Hernando Counties. * WHEN...From 3 AM to 8 AM EST Tuesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... A freeze warning means widespread freezing temperatures are expected to occur. Take steps now to protect tender plants from the cold. Exposed outdoor water pipes may burst if not wrapped or covered. && $$ For more information from the National Weather Service visit https://weather.gov/tampa
1 follow-up statement
008 WWUS72 KTBW 182105 NPWTBW URGENT - WEATHER MESSAGE National Weather Service Tampa Bay Ruskin FL 405 PM EST Mon Jan 18 2021 FLZ139-239-242-248-191300- /O.CON.KTBW.FZ.W.0002.210119T0800Z-210119T1300Z/ Coastal Levy-Inland Levy-Inland Citrus-Inland Hernando- Including the cities of Cedar Key, Yankeetown, Chiefland, Bronson, Williston, Inverness, Brooksville, and Spring Hill 405 PM EST Mon Jan 18 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM EST TUESDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Coastal Levy, Inland Levy, Inland Citrus and Inland Hernando Counties. * WHEN...From 3 AM to 8 AM EST Tuesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... A freeze warning means widespread freezing temperatures are expected to occur. Take steps now to protect tender plants from the cold. Exposed outdoor water pipes may burst if not wrapped or covered. && $$ FLZ043-142-148-249-191300- /O.NEW.KTBW.FR.Y.0003.210119T0800Z-210119T1300Z/ Sumter-Coastal Citrus-Coastal Hernando-Inland Pasco- Including the cities of Wildwood, Lake Panasoffkee, Bushnell, The Villages, Crystal River, Homosassa, Hernando Beach, Bayport, Dade City, and Zephyrhills 405 PM EST Mon Jan 18 2021 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM EST TUESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Sumter, Coastal Citrus, Coastal Hernando and Inland Pasco Counties. * WHEN...From 3 AM to 8 AM EST Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/tampabay
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 18, 4:05 PM EST | Frost Advisory | TBW | Citrus, Hernando, Pasco, Sumter | 16 hr |
Nearby
Freeze Warnings in Florida, 2021Every freeze warning in 2021
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.