Alert archive / Florida / Red Flag Warnings in 2020

Red Flag Warning 1, NWS Melbourne, FL

February 29, 2020Orange County, Seminole County, Volusia County, Florida

NWS Melbourne, FL issued this red flag warning at Feb 29, 2020, 4:25 AM EST for Orange County, Seminole County, Volusia County, Florida. It took effect at Feb 29, 2020, 12:00 PM EST. 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
Feb 29, 2020, 4:25 AM EST (09:25 UTC)
In effect from
Feb 29, 2020, 12:00 PM EST
Expired
Feb 29, 2020, 7:00 PM EST
In force
7 hr
Issued by
NWS Melbourne, FL

Counties Orange County, FL, Seminole County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 92 km from the middle of the area, began a volume at 09:29 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 00:00Z, 9.4 hours before the alert went out and 79 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 00:00Z on 2020-02-29Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 00:00Z on 2020-02-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.1939587897117136Sfc1 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
1789 m above ground
0-6 km bulk shear
90 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

075 
WWUS82 KMLB 290925
RFWMLB

URGENT - FIRE WEATHER MESSAGE
National Weather Service Melbourne FL
425 AM EST Sat Feb 29 2020


FLZ041-045-046-141-010000-
/O.NEW.KMLB.FW.W.0001.200229T1700Z-200301T0000Z/
Inland Volusia-Orange-Seminole-Coastal Volusia-
425 AM EST Sat Feb 29 2020

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM EST THIS
EVENING FOR LONG DURATION OF LOW RELATIVE HUMIDITY AND WIND SPEEDS
NEAR 15 MPH FOR VOLUSIA, SEMINOLE AND ORANGE COUNTIES...

The National Weather Service in Melbourne has issued a Red Flag
Warning, which is in effect from noon today to 7 PM EST this
evening. 

* AFFECTED AREA... Inland Volusia... Orange... Seminole... 
  Coastal Volusia. 

* WIND...Northwest around 15 mph.

* HUMIDITY...Minimum relative humidity values between 25-30%

* IMPACTS...any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

Nearby

Red Flag Warnings in Florida, 2020Every red flag warning in 2020

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.