Alert archive / Florida / Red Flag Warnings in 2007

Red Flag Warning 35, NWS Melbourne, FL

April 23, 20076 counties in Florida

NWS Melbourne, FL issued this red flag warning at Apr 23, 2007, 4:12 AM EDT for 6 counties in Florida. It took effect at Apr 23, 2007, 12:00 PM EDT. It was in force for 8 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 23, 2007, 4:12 AM EDT (08:12 UTC)
In effect from: Apr 23, 2007, 12:00 PM EDT
Expired: Apr 23, 2007, 8:00 PM EDT
In force: 8 hr
Issued by: NWS Melbourne, FL

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

The radar

The Melbourne radar (KMLB), 67 km from the middle of the area, began a volume at 08:12 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, 8.2 hours before the alert went out and 139 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2222 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: 23 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 230812
RFWMLB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
412 AM EDT MON APR 23 2007

...RED FLAG WARNING IN EFFECT THIS AFTERNOON FOR 4 HOURS OF
CRITICALY LOW RELATIVE HUMIDITY OVER THE NORTHERN INTERIOR
COUNTIES AND 1-3 HOURS OF CRITICALLY LOW RELATIVE HUMIDITY AND
WINDS NEAR 15 MPH OVER THE SOUTHERN INTERIOR COUNTIES...

FLZ041-044>046-053-058-144-232015-
/O.UPG.KMLB.FW.A.0031.070423T1600Z-070424T0000Z/
/O.NEW.KMLB.FW.W.0035.070423T1600Z-070424T0000Z/
INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-OSCEOLA-OKEECHOBEE-
SOUTHERN LAKE-
412 AM EDT MON APR 23 2007

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS
EVENING...

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS
EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. 

HIGH PRESSURE WILL REMAIN OVER THE AREA WITH AFTERNOON RELATIVE
HUMIDITY VALUES FALLING TO AROUND 35 PERCENT FOR CLOSE TO 4 HOURS
ACROSS THE INTERIOR FROM OSCEOLA COUNTY NORTHWARD. ACROSS OKEECHOBEE
COUNTY...1-3 HOURS OF RELATIVE HUMIDITY NEAR 35 PERCENT IS EXPECTED
WITH WINDS NEAR 15 MPH.

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.

$$

SMS

Nearby

Red Flag Warnings in Florida, 2007 Every 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.