Alert archive / Florida / Red Flag Warnings in 2012

Red Flag Warning 12, NWS Melbourne, FL

April 12, 20125 counties in Florida

NWS Melbourne, FL issued this red flag warning at Apr 12, 2012, 4:26 AM EDT for 5 counties in Florida. It took effect at Apr 12, 2012, 12:00 PM EDT. It was in force for 6 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
Apr 12, 2012, 4:26 AM EDT (08:26 UTC)
In effect from
Apr 12, 2012, 12:00 PM EDT
Expired
Apr 12, 2012, 6:00 PM EDT
In force
6 hr
Issued by
NWS Melbourne, FL

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

The radar

The Melbourne radar (KMLB), 86 km from the middle of the area, began a volume at 08:28 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

Jacksonville, FL (KJAX), launched 00:00Z, 8.4 hours before the alert went out and 212 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, Jacksonville, FL at 00:00Z on 2012-04-12Temperature 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, Jacksonville, FL at 00:00Z on 2012-04-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.1939587897Sfc1 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
2506 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

739 
WWUS82 KMLB 120826
RFWMLB

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MELBOURNE FL
426 AM EDT THU APR 12 2012

FLZ045-046-122200-
/O.UPG.KMLB.FW.A.0010.120412T1700Z-120412T2300Z/
/O.NEW.KMLB.FW.W.0012.120412T1600Z-120412T2200Z/
ORANGE-SEMINOLE-
426 AM EDT THU APR 12 2012

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM EDT THIS
EVENING FOR LONG DURATION OF LOW RH AND HIGH ERC VALUES FOR
LAKE...ORANGE...OSCEOLA...SEMINOLE AND INTERIOR VOLUSIA COUNTIES...

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 6 PM EDT THIS
EVENING. 

* AFFECTED AREA... ORANGE... SEMINOLE. 

* WIND...NORTHEAST WINDS WILL INCREASE TO 10 TO 15 MPH THIS
  AFTERNOON.

* HUMIDITY...25 TO 30 PERCENT FOR 4 TO 6 HOURS.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.
  OUTDOOR BURNING IS NOT RECOMMENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING IS ISSUED WHEN VERY FAVORABLE CONDITIONS FOR
THE SPREAD OF WILDFIRE ARE OCCURRING NOW...OR WILL LIKELY OCCUR
WITHIN THE NEXT 24 HOURS.

&&

$$

FLZ041-044-053-144-122200-
/O.NEW.KMLB.FW.W.0012.120412T1600Z-120412T2200Z/
INLAND VOLUSIA-NORTHERN LAKE-OSCEOLA-SOUTHERN LAKE-
426 AM EDT THU APR 12 2012

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM EDT THIS
EVENING FOR LONG DURATION OF LOW RH AND HIGH ERC VALUES FOR
LAKE...ORANGE...OSCEOLA...SEMINOLE AND INTERIOR VOLUSIA COUNTIES...

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 6 PM EDT THIS
EVENING. 

* AFFECTED AREA... INLAND VOLUSIA... NORTHERN LAKE... OSCEOLA... 
  SOUTHERN LAKE. 

* WIND...NORTHEAST WINDS WILL INCREASE TO 10 TO 15 MPH THIS
  AFTERNOON.

* HUMIDITY...25 TO 30 PERCENT FOR 4 TO 6 HOURS.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS NOT RECOMMENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING IS ISSUED WHEN VERY FAVORABLE CONDITIONS FOR
THE SPREAD OF WILDFIRE ARE OCCURRING NOW...OR WILL LIKELY OCCUR
WITHIN THE NEXT 24 HOURS.

&&

$$

KELLY

Nearby

Red Flag Warnings in Florida, 2012Every red flag warning in 2012

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.