Alert archive / Florida / Red Flag Warnings in 2007

Red Flag Warning 49, NWS Melbourne, FL

May 22, 2007Lake County, Orange County, Osceola County, Florida

NWS Melbourne, FL issued this red flag warning at May 22, 2007, 5:00 AM EDT for Lake County, Orange County, Osceola County, Florida. It took effect at May 22, 2007, 1:00 PM EDT. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 22, 2007, 5:00 AM EDT (09:00 UTC)
In effect from
May 22, 2007, 1:00 PM EDT
Expired
May 22, 2007, 2:03 PM EDT
In force
63 min
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 09:00 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, 9.0 hours before the alert went out and 129 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, Tampa Bay, FL at 00:00Z on 2007-05-22Temperature 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, Tampa Bay, FL at 00:00Z on 2007-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 square meters per square second.193958Sfc1 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
3041 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
30 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.

000 
WWUS82 KMLB 220900
RFWMLB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
500 AM EDT TUE MAY 22 2007

...ELEVATED FIRE THREAT TODAY WEST OF ORLANDO...

FLZ044-045-053-144-222200-
/O.NEW.KMLB.FW.W.0049.070522T1700Z-070522T2200Z/
NORTHERN LAKE-ORANGE-OSCEOLA-SOUTHERN LAKE-
500 AM EDT TUE MAY 22 2007

...RED FLAG WARNING IN EFFECT FROM 1 PM TO 6 PM EDT THIS
AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 1 PM TO 6 PM EDT THIS
AFTERNOON. 

EASTERLY WINDS BETWEEN 15 AND 20 MPH COMBINED WITH THE ONGOING DRY
CONDITIONS WILL RESULT IN AN ELEVATED FIRE THREAT TODAY WEST OF
ORLANDO. THE BREEZY CONDITIONS WILL PROMOTE THE RAPID SPREAD OF
ANY NEW OR EXISTING WILDFIRES.

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS...
LONG DURATIONS OF LOW RELATIVE HUMIDITY OR A COMBINATION OF LOW
RELATIVE HUMIDITY AND STRONG WINDS...ARE EITHER OCCURRING NOW...
OR ARE FORECAST TO OCCUR IN THE NEXT 24 HOURS.

$$
1 follow-up statement
000 
WWUS82 KMLB 221803
RFWMLB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
203 PM EDT TUE MAY 22 2007

...RED FLAG WARNING FOR INTERIOR EAST CENTRAL FLORIDA CANCELLED...

FLZ044-045-053-144-221915-
/O.CAN.KMLB.FW.W.0049.000000T0000Z-070522T2200Z/
NORTHERN LAKE-ORANGE-OSCEOLA-SOUTHERN LAKE-
203 PM EDT TUE MAY 22 2007

...RED FLAG WARNING IS CANCELLED...

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

RELATIVE HUMIDITY VALUES HAVE NOT DROPPED AS MUCH AS ORIGINALLY
FORECAST. BRISK EASTERLY TRANSPORT WINDS STILL POSE A PROBLEM FOR
FIRE SPREAD.

$$

67

Nearby

Red Flag Warnings in Florida, 2007Every red flag warning in 2007

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.