Alert archive / Florida / Freeze Warnings in 2021

Freeze Warning 2, NWS Melbourne, FL

February 3, 20214 counties in Florida

NWS Melbourne, FL issued this freeze warning at Feb 3, 2021, 3:53 AM EST for 4 counties in Florida. It took effect at Feb 4, 2021, 1:00 AM EST. It was in force for 7 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
Feb 3, 2021, 3:53 AM EST (08:53 UTC)
In effect from
Feb 4, 2021, 1:00 AM EST
Expired
Feb 4, 2021, 8:00 AM EST
In force
7 hr
Issued by
NWS Melbourne, FL

Counties Lake County, FL, Orange County, FL, Seminole County, FL, Volusia County, FL

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 00:00Z, 8.9 hours before the alert went out and 90 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 2021-02-03Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 00:00Z on 2021-02-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 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
1718 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
95 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

The text

As transmitted.

371 
WWUS72 KMLB 030853
NPWMLB

URGENT - WEATHER MESSAGE
National Weather Service Melbourne FL
353 AM EST Wed Feb 3 2021

FLZ041-044-141-144-032100-
/O.NEW.KMLB.FZ.W.0002.210204T0600Z-210204T1300Z/
/O.CON.KMLB.FZ.W.0001.210203T0900Z-210203T1400Z/
Inland Volusia-Northern Lake-Coastal Volusia-Southern Lake-
Including the cities of Debary, Deland, Deltona, Eustis, 
Mount Dora, Leesburg, Tavares, Daytona Beach, New Smyrna Beach, 
Ormond Beach, Clermont, Mascotte, and Groveland
353 AM EST Wed Feb 3 2021

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING...
...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM EST THURSDAY...

* WHAT...Sub-freezing temperatures as low as 32 expected this
  morning. For the second Freeze Warning, sub-freezing 
  temperatures as low as 31 expected Fromtonight.

* WHERE...Volusia and Lake Counties

* WHEN...Through 9 AM this morning. For the second Freeze Warning,
  from 1 AM to 8 AM Thursday.

* IMPACTS...Freezing temperatures will hurt sensitive persons 
  and outdoor pets. Frost and freeze conditions will kill crops 
  other sensitive vegetation.

* ADDITIONAL DETAILS...Cold weather shelters are open in many 
communities. Check with local county emergency management for 
locations and operating hours of shelters.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect the elderly, children, outdoor pets,
tender plants, and crops from the freezing temperatures.

&&

$$

FLZ045-046-147-032100-
/O.NEW.KMLB.FZ.W.0002.210204T0600Z-210204T1300Z/
Orange-Seminole-Northern Brevard-
Including the cities of Apopka, Maitland, Orlando, Winter Park, 
Union Park, Altamonte Springs, Casselberry, Oviedo, Sanford, 
Winter Springs, Cocoa, and Titusville
353 AM EST Wed Feb 3 2021

...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM EST THURSDAY...

* WHAT...Sub-freezing temperatures as low as 32 expected.

* WHERE...Orange, Seminole and Northern Brevard Counties.

* WHEN...From 1 AM to 8 AM EST Thursday.

* IMPACTS...Freezing temperatures will hurt sensitive persons 
  and outdoor pets. Frost and freeze conditions will kill crops 
  other sensitive vegetation.

* ADDITIONAL DETAILS...Cold weather shelters are open in many 
communities. Check with local county emergency management for 
locations and operating hours of shelters.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect the elderly, children, outdoor pets,
tender plants, and crops from the freezing temperatures.

&&

$$

FLZ047-053-054-058-059-032100-
/O.NEW.KMLB.FZ.A.0001.210204T0600Z-210204T1300Z/
Southern Brevard-Osceola-Indian River-Okeechobee-St. Lucie-
Including the cities of Melbourne, Palm Bay, Rockledge, 
Celebration, Kissimmee, Saint Cloud, Sebastian, Vero Beach, 
Basinger, Fort Drum, Okeechobee, Port Saint Lucie, 
and Fort Pierce
353 AM EST Wed Feb 3 2021

...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY
MORNING...

* WHAT...Sub-freezing temperatures as low as 32 possible.

* WHERE...Southern Brevard, Osceola, Indian River, Okeechobee 
  and St. Lucie Counties.

* WHEN...From late tonight through Thursday morning.

* IMPACTS...Freezing temperatures could hurt sensitive persons 
  and outdoor pets. Frost and freeze conditions could kill crops 
  other sensitive vegetation.

* ADDITIONAL DETAILS...Cold weather shelters are open in many 
communities. Check with local county emergency management for 
locations and operating hours of shelters.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect the elderly, children, outdoor pets,
tender plants, and crops from the freezing temperatures.

&&

$$

Rodriguez
2 follow-up statements
701 
WWUS72 KMLB 031451
NPWMLB

URGENT - WEATHER MESSAGE
National Weather Service Melbourne FL
951 AM EST Wed Feb 3 2021

FLZ041-044>046-141-144-147-041300-
/O.CON.KMLB.FZ.W.0002.210204T0600Z-210204T1300Z/
Inland Volusia-Northern Lake-Orange-Seminole-Coastal Volusia-
Southern Lake-Northern Brevard-
Including the cities of Debary, Deland, Deltona, Eustis, 
Mount Dora, Leesburg, Tavares, Apopka, Maitland, Orlando, 
Winter Park, Union Park, Altamonte Springs, Casselberry, Oviedo, 
Sanford, Winter Springs, Daytona Beach, New Smyrna Beach, 
Ormond Beach, Clermont, Mascotte, Groveland, Cocoa, 
and Titusville
951 AM EST Wed Feb 3 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 8 AM EST
THURSDAY...

* WHAT...Sub-freezing temperatures as low as 31 expected.

* WHERE...Volusia, North Brevard, Lake, Seminole, and Orange 
  Counties.

* WHEN...From 1 AM to 8 AM EST Thursday.

* IMPACTS...Freezing temperatures will hurt sensitive persons 
  and outdoor pets. Frost and freeze conditions will kill crops 
  other sensitive vegetation.

* ADDITIONAL DETAILS...Cold weather shelters are open in many 
communities. Check with local county emergency management for 
locations and operating hours of shelters.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

FLZ047-053-054-058-059-041300-
/O.CON.KMLB.FZ.A.0001.210204T0600Z-210204T1300Z/
Southern Brevard-Osceola-Indian River-Okeechobee-St. Lucie-
Including the cities of Melbourne, Palm Bay, Rockledge, 
Celebration, Kissimmee, Saint Cloud, Sebastian, Vero Beach, 
Basinger, Fort Drum, Okeechobee, Port Saint Lucie, 
and Fort Pierce
951 AM EST Wed Feb 3 2021

...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY MORNING...

* WHAT...Sub-freezing temperatures as low as 32 possible.

* WHERE...Southern Brevard, St. Lucie, Okeechobee, Osceola and 
  Indian River Counties.

* WHEN...From late tonight through Thursday morning.

* IMPACTS...Freezing temperatures could hurt sensitive persons 
  and outdoor pets. Frost and freeze conditions could kill crops 
  other sensitive vegetation.

* ADDITIONAL DETAILS...Cold weather shelters are open in many 
communities. Check with local county emergency management for 
locations and operating hours of shelters.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$
999 
WWUS72 KMLB 031917
NPWMLB

URGENT - WEATHER MESSAGE
National Weather Service Melbourne FL
217 PM EST Wed Feb 3 2021

FLZ041-044>046-141-144-147-041300-
/O.CON.KMLB.FZ.W.0002.210204T0600Z-210204T1300Z/
Inland Volusia-Northern Lake-Orange-Seminole-Coastal Volusia-
Southern Lake-Northern Brevard-
Including the cities of Debary, Deland, Deltona, Eustis, 
Mount Dora, Leesburg, Tavares, Apopka, Maitland, Orlando, 
Winter Park, Union Park, Altamonte Springs, Casselberry, Oviedo, 
Sanford, Winter Springs, Daytona Beach, New Smyrna Beach, 
Ormond Beach, Clermont, Mascotte, Groveland, Cocoa, 
and Titusville
217 PM EST Wed Feb 3 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 8 AM EST
THURSDAY...

* WHAT...Sub-freezing temperatures as low as 31 expected.

* WHERE...Volusia, Northern Brevard, Lake, Seminole, and Orange 
  Counties.

* WHEN...From 1 AM to 8 AM EST Thursday.

* IMPACTS...Freezing temperatures will hurt sensitive persons 
  and outdoor pets. Frost and freeze conditions will kill crops 
  other sensitive vegetation.

* ADDITIONAL DETAILS...Cold weather shelters are open in many 
communities. Check with local county emergency management for 
locations and operating hours of shelters.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

FLZ047-053-054-058-059-041300-
/O.UPG.KMLB.FZ.A.0001.210204T0600Z-210204T1300Z/
/O.NEW.KMLB.FR.Y.0004.210204T0900Z-210204T1300Z/
Southern Brevard-Osceola-Indian River-Okeechobee-St. Lucie-
Including the cities of Melbourne, Palm Bay, Rockledge, 
Celebration, Kissimmee, Saint Cloud, Sebastian, Vero Beach, 
Basinger, Fort Drum, Okeechobee, Port Saint Lucie, 
and Fort Pierce
217 PM EST Wed Feb 3 2021

...FROST ADVISORY IN EFFECT FROM 4 AM TO 8 AM EST THURSDAY...

* WHAT...Low temperatures between 33 and 36 will result in frost 
  formation late tonight.

* WHERE...Southern Brevard, Osceola, Indian River, Okeechobee 
  and St. Lucie Counties.

* WHEN...From 4 AM to 8 AM EST Thursday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

FLZ064-041300-
/O.NEW.KMLB.FR.Y.0004.210204T0900Z-210204T1300Z/
Martin-
Including the cities of Hobe Sound, Jensen Beach, Port Salerno, 
and Stuart
217 PM EST Wed Feb 3 2021

...FROST ADVISORY IN EFFECT FROM 4 AM TO 8 AM EST THURSDAY...

* WHAT...Low temperatures between 34 and 37 will result in frost 
  formation late tonight.

* WHERE...Martin County, generally west of I-95.

* WHEN...From 4 AM to 8 AM EST Thursday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 3, 3:53 AM ESTFreeze WatchMLBOkeechobee, Osceola10 hr
Feb 3, 2:17 PM ESTFrost AdvisoryMLBOkeechobee, Osceola18 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.