Alert archive / Florida / Freeze Warnings in 2017

Freeze Warning 2, NWS Melbourne, FL

March 15, 2017Lake County, Volusia County, Florida

NWS Melbourne, FL issued this freeze warning at Mar 15, 2017, 8:18 AM EDT for Lake County, Volusia County, Florida. It took effect at Mar 16, 2017, 2:00 AM EDT. 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
Mar 15, 2017, 8:18 AM EDT (12:18 UTC)
In effect from
Mar 16, 2017, 2:00 AM EDT
Expired
Mar 16, 2017, 9:00 AM EDT
In force
7 hr
Issued by
NWS Melbourne, FL

Counties Lake County, FL, Volusia County, FL

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 0.3 hours before the alert went out and 103 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 2017-03-15Temperature 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 12:00Z on 2017-03-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -91 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
1227 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
-91 m²/s²
0-3 km storm-relative helicity
-52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

434 
WWUS72 KMLB 151218
NPWMLB

URGENT - WEATHER MESSAGE
National Weather Service Melbourne FL
818 AM EDT Wed Mar 15 2017

FLZ041-044-161300-
/O.UPG.KMLB.FZ.A.0001.170316T0600Z-170316T1300Z/
/O.NEW.KMLB.FZ.W.0002.170316T0600Z-170316T1300Z/
Inland Volusia County-Northern Lake County-
Including the cities of Debary, Deland, Deltona, Eustis, 
Mount Dora, Leesburg, and Tavares
818 AM EDT Wed Mar 15 2017

...FREEZE WARNING IN EFFECT FROM 2 AM TO 9 AM EDT THURSDAY...

The National Weather Service in Melbourne has issued a Freeze
Warning, which is in effect from 2 AM to 9 AM EDT Thursday. The
Freeze Watch is no longer in effect. 

* TEMPERATURE...Early morning temperatures at to just below
  freezing are possible for around two to four hours early
  Thursday morning across interior Volusia and northern Lake
  counties. Temperatures in the mid to upper 30s are forecast for
  most of east central Florida generally west of the Intracoastal
  waterway inland from the coast and inland south to Lake
  Okeechobee. Protected areas which are typically colder may see
  frost develop where freezing temperatures may not quite occur.


* IMPACTS...Given the late time of this cold event on the calendar
  ornamental and sensitive plants may be especially vulnerable to
  the effects of the cold. Portable plants may need to be brought
  to a warmer location, or consider covering sensitive vegetation.
  Small animals should be adequately cared for, or brought 
  indoors if needed. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or 
highly likely. These conditions will kill crops and other 
sensitive vegetation.

&&

$$

Sedlock
1 follow-up statement
259 
WWUS72 KMLB 161301
NPWMLB

URGENT - WEATHER MESSAGE
National Weather Service Melbourne FL
901 AM EDT Thu Mar 16 2017

FLZ041-044-161415-
/O.EXP.KMLB.FZ.W.0002.000000T0000Z-170316T1300Z/
Inland Volusia County-Northern Lake County-
Including the cities of Debary, Deland, Deltona, Eustis, 
Mount Dora, Leesburg, and Tavares
901 AM EDT Thu Mar 16 2017

...FREEZE WARNING HAS EXPIRED...

Temperatures will make a slow rise today, but still remain well
below normal.

$$

Nearby

Freeze Warnings in Florida, 2017Every freeze warning in 2017

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.