Alert archive / Florida / Red Flag Warnings in 2010

Red Flag Warning 39, NWS Melbourne, FL

April 9, 2010Lake County, Orange County, Osceola County, Florida

NWS Melbourne, FL issued this red flag warning at Apr 9, 2010, 12:52 PM EDT for Lake County, Orange County, Osceola County, Florida. It took effect at Apr 10, 2010, 1:00 PM EDT. It was in force for 3 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 9, 2010, 12:52 PM EDT (16:52 UTC)
In effect from
Apr 10, 2010, 1:00 PM EDT
Expired
Apr 10, 2010, 4:23 PM EDT
In force
3 hr
Issued by
NWS Melbourne, FL

Counties Lake County, FL, Orange County, FL, Osceola County, FL

The radar

The Melbourne radar (KMLB), 81 km from the middle of the area, began a volume at 16:52 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, 4.9 hours before the alert went out and 87 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 2010-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 175 joules per kilogram.LCLLFCEL10008507005003002001001 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 2010-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 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
175 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
1056 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

292 
WWUS82 KMLB 091652
RFWMLB

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MELBOURNE FL
1252 PM EDT FRI APR 9 2010

FLZ044-045-053-144-101100-
/O.NEW.KMLB.FW.W.0039.100410T1700Z-100410T2300Z/
NORTHERN LAKE-ORANGE-OSCEOLA-SOUTHERN LAKE-
1252 PM EDT FRI APR 9 2010

...RED FLAG WARNING IN EFFECT FROM 1 PM TO 7 PM EDT SATURDAY...

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 1 PM TO 7 PM EDT SATURDAY. 

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.

&&

$$

67
2 follow-up statements
810 
WWUS82 KMLB 100944
RFWMLB

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MELBOURNE FL
544 AM EDT SAT APR 10 2010

FLZ044-045-053-144-102300-
/O.CON.KMLB.FW.W.0039.100410T1700Z-100410T2300Z/
NORTHERN LAKE-ORANGE-OSCEOLA-SOUTHERN LAKE-
544 AM EDT SAT APR 10 2010

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
7 PM EDT THIS EVENING...

A RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
7 PM EDT THIS EVENING. 

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.

&&

$$
256 
WWUS82 KMLB 102023
RFWMLB

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MELBOURNE FL
423 PM EDT SAT APR 10 2010

FLZ044-045-053-144-102130-
/O.CAN.KMLB.FW.W.0039.000000T0000Z-100410T2300Z/
NORTHERN LAKE-ORANGE-OSCEOLA-SOUTHERN LAKE-
423 PM EDT SAT APR 10 2010

...RED FLAG WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS CANCELLED THE RED
FLAG WARNING. 

RELATIVE HUMIDITY VALUES ARE EXPECTED TO REMAIN ABOVE CRITICAL
LEVELS ACROSS THE WARNING AREA FOR THE REST OF THIS AFTERNOON.
THEREFORE THE RED FLAG WARNING IS CANCELLED.

$$

WEITLICH

Nearby

Red Flag Warnings in Florida, 2010Every red flag warning in 2010

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.