Alert archive / Florida / Red Flag Warnings in 2013

Red Flag Warning 6, NWS Melbourne, FL

March 7, 2013Orange County, Osceola County, Seminole County, Florida

NWS Melbourne, FL issued this red flag warning at Mar 7, 2013, 3:31 AM EST for Orange County, Osceola County, Seminole County, Florida. It took effect at Mar 7, 2013, 11:00 AM EST. 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
Mar 7, 2013, 3:31 AM EST (08:31 UTC)
In effect from
Mar 7, 2013, 11:00 AM EST
Expired
Mar 7, 2013, 2:17 PM EST
In force
3 hr
Issued by
NWS Melbourne, FL

Counties Orange County, FL, Osceola County, FL, Seminole County, FL

The radar

The Melbourne radar (KMLB), 67 km from the middle of the area, began a volume at 08:37 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, 8.5 hours before the alert went out and 140 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 2013-03-07Temperature 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, Tampa Bay, FL at 00:00Z on 2013-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 square meters per square second.1939587897117Sfc1 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
1709 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
185 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.

940 
WWUS82 KMLB 070831
RFWMLB

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MELBOURNE FL
331 AM EST THU MAR 7 2013


FLZ045>047-053-054-147-071645-
/O.NEW.KMLB.FW.W.0006.130307T1600Z-130307T2300Z/
ORANGE-SEMINOLE-SOUTHERN BREVARD-OSCEOLA-INDIAN RIVER-
NORTHERN BREVARD-
331 AM EST THU MAR 7 2013

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 6 PM EST
THIS EVENING FOR CRITICALLY LOW HUMIDITY AND DRY VEGETATION...

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 6 PM EST
THIS EVENING. 

* AFFECTED AREA... ORANGE... SEMINOLE... SOUTHERN BREVARD... 
  OSCEOLA... INDIAN RIVER... NORTHERN BREVARD. 

* WIND...NORTHWEST 10 TO 15 MPH.

* HUMIDITY...4 TO 8 HOURS OF CRITICAL RELATIVE HUMIDITY BELOW 35
  PERCENT WITH MINIMUM VALUES AROUND 25 PERCENT.

* 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.

&&

$$
2 follow-up statements
500 
WWUS82 KMLB 071646
RFWMLB

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MELBOURNE FL
1146 AM EST THU MAR 7 2013

FLZ045>047-053-054-147-072300-
/O.CON.KMLB.FW.W.0006.000000T0000Z-130307T2300Z/
ORANGE-SEMINOLE-SOUTHERN BREVARD-OSCEOLA-INDIAN RIVER-
NORTHERN BREVARD-
1146 AM EST THU MAR 7 2013

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM EST THIS EVENING
FOR LONG DURATIONS OF LOW RELATIVE HUMIDITY AND DRY VEGETATION...

* AFFECTED AREA... ORANGE... SEMINOLE... INLAND SOUTHERN
  BREVARD... OSCEOLA... INLAND INDIAN RIVER... INLAND NORTHERN
  BREVARD.

* WIND...NORTHWEST TO NORTH WINDS AROUND 10 MPH.

* HUMIDITY...NEAR 4 HOURS OF CRITICAL RELATIVE HUMIDITY BELOW 35
  PERCENT FOR INTERIOR COUNTIES AND INLAND SECTIONS OF THE COASTAL 
  COUNTIES.

* 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.

&&

$$
674 
WWUS82 KMLB 071917
RFWMLB

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MELBOURNE FL
217 PM EST THU MAR 7 2013

FLZ045>047-053-054-147-072030-
/O.CAN.KMLB.FW.W.0006.000000T0000Z-130307T2300Z/
ORANGE-SEMINOLE-SOUTHERN BREVARD-OSCEOLA-INDIAN RIVER-
NORTHERN BREVARD-
217 PM EST THU MAR 7 2013

...RED FLAG WARNING IS CANCELLED FOR ORANGE...SEMINOLE...INLAND
SOUTHERN BREVARD...OSCEOLA...INLAND INDIAN RIVER...INLAND NORTHERN
BREVARD.

RELATIVE HUMIDITY VALUES HAVE NOT FALLEN BELOW 35 PERCENT IN THE
WARNED AREA. HENCE THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS
CANCELLED THE RED FLAG WARNING.

$$

What forecasters said that day

The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Melbourne, FL wrote its last area forecast discussion before this red flag warning went out at Mar 6, 8:38 PM EST, 6 hours 53 minutes earlier.

Area forecast discussion, Mar 6, 8:38 PM EST, 6 hours 53 minutes before
EAST CENTRAL FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MELBOURNE FL
838 PM EST WED MAR 6 2013

.DISCUSSION...
CURRENT-TONIGHT...
WINDY AND VERY DRY DAY IS COMING TO AN END. LOW RH VALUES DURING THE
AFTERNOON FELL TO THE TEENS MOST AREAS WITH WIND GUSTS AT TIMES OVER
30 MPH. SEVERAL FIRES REMAIN A CONCERN FOR NIGHT TIME SMOKE AND
LIGHTER WINDS WILL SLOWLY VEER TO MORE NELY COMPONENT BY EARLY
THURSDAY MORNING.

ANOTHER COLD NIGHT AHEAD WITH LOWS IN THE UPPER 30S ACROSS MUCH OF
THE MAINLAND WITH MID 30S IN SOME OF THE TRADITIONALLY COLDER SPOTS.

WINDS WL REMAIN ENOUGH TO ALLOW FOR ONLY A PARTIAL INVERSION AT MOST
AND WITHOUT FULL DECOUPLING TEMP WILL BE HELD IN CHECK FROM NEARING
DEWPOINT READINGS. COLD SENSITIVE PLANTS AND PETS WL NEED PROTECTION.

&&

.AVIATION...VFR WITH SKC ALL SITES.

&&

.MARINE...
OVERNIGHT-THU...HIGH PRESSURE BUILDS INTO THE AREA INTO THU.  SMALL
CRAFT ADVISORIES CONTINUE FOR ALL SEGMENTS OVERNIGHT WITH WINDS AND
SEAS REMAINING NEAR TO ABOVE HAZARD CRITERIA. SEAS 5-6 FT NEAR SHORE
AND 7 TO 9 FT WELL AWAY FROM THE COAST.

&&

.FIRE WEATHER...
THU...20 FOOT NORTH/NE WINDS AROUND 10 MPH. RH'S OVER THE FAR
INTERIOR DROPPING INTO THE 20S DURING THE AFTERNOON AND MAINLY
30S/LOWER 40S CLOSER TOWARDS THE EAST COAST. VEGETATION DRYNESS
FORECAST JUST BELOW HAZARDOUS CRITERIA.

&&

.MLB WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
AM...SMALL CRAFT ADVISORY UNTIL 7 AM EST THURSDAY FOR COASTAL WATERS
     FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE OUT 20 NM-
     COASTAL WATERS FROM SEBASTIAN INLET TO JUPITER INLET OUT 20
     NM-COASTAL WATERS FROM VOLUSIA BREVARD COUNTY LINE TO
     SEBASTIAN INLET OUT 20 NM-WATERS FROM SEBASTIAN INLET TO
     JUPITER INLET 20 TO 60 NM OFFSHORE-WATERS FROM VOLUSIA
     BREVARD COUNTY LINE TO SEBASTIAN INLET 20 TO 60 NM OFFSHORE.

     SMALL CRAFT ADVISORY TO 7 AM EST THURSDAY FOR WATERS FROM
     FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE 20 TO 60 NM
     OFFSHORE.

&&

JP/ALM
Hazardous weather outlook, Mar 6, 6:44 PM EST, 8 hours 47 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MELBOURNE FL
644 PM EST WED MAR 6 2013

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-070800-
COASTAL WATERS FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE
OUT 20 NM-
COASTAL WATERS FROM VOLUSIA BREVARD COUNTY LINE TO SEBASTIAN
INLET OUT 20 NM-
COASTAL WATERS FROM SEBASTIAN INLET TO JUPITER INLET OUT 20 NM-
WATERS FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE 20 TO
60 NM OFFSHORE-
WATERS FROM VOLUSIA BREVARD COUNTY LINE TO SEBASTIAN INLET 20 TO
60 NM OFFSHORE-
WATERS FROM SEBASTIAN INLET TO JUPITER INLET 20 TO 60 NM OFFSHORE-
INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-SOUTHERN BREVARD-
OSCEOLA-INDIAN RIVER-OKEECHOBEE-ST. LUCIE-MARTIN-COASTAL VOLUSIA-
SOUTHERN LAKE-NORTHERN BREVARD-
644 PM EST WED MAR 6 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TONIGHT.

.EXCESSIVE COLD IMPACT...
LOW TEMPERATURES TONIGHT WILL FALL INTO THE UPPER 30S AND LOW 40S
OVER MUCH OF EAST CENTRAL FLORIDA...WITH NORMALLY COLDER AREAS
DROPPING INTO THE MID 30S. A NORTHWEST BREEZE AT 5 TO 10 MPH WILL
GENERATE MINIMUM WIND CHILLS OF 30 TO 35 DEGREES BY DAYBREAK
THURSDAY MORNING.

.DENSE FOG/SMOKE IMPACT...
VISIBILITY MAY BE RESTRICTED IN LOCATIONS NEAR ACTIVE AND SMOLDERING
BRUSH FIRES OVERNIGHT. DRIVERS SHOULD ALSO MONITOR FOR THE
POSSIBILITY OF LOCAL ROAD CLOSURES DUE TO ONGOING FIRES AND LOW
VISIBILITY.

.WIND AND SEA IMPACT...
HAZARDOUS BOATING CONDITIONS WILL CONTINUE OVER THE LOCAL ATLANTIC
WITH NORTHWEST WINDS OF 20 TO 25 KNOTS WITH OCCASIONAL GUSTS UP TO
30 KNOTS THIS EVENING SLOWLY SUBSIDING TO AROUND 20 KNOTS BY
DAYBREAK THURSDAY. A SMALL CRAFT ADVISORY IS IN EFFECT FOR ALL OF
THE EAST CENTRAL FLORIDA COASTAL WATERS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
POOR TO HAZARDOUS BOATING CONDITIONS ARE EXPECTED AGAIN THIS
WEEKEND.

AS FUEL MOISTURE CONTINUES TO DECLINE DUE TO THE LACK OF SIGNIFICANT
RAIN...AND LOW RELATIVE HUMIDITY PERSISTS OVER INTERIOR
SECTIONS...FIRE WEATHER CONDITIONS WILL REMAIN A CONCERN INTO THE
WEEKEND.

ROUGH POUNDING SURF IS EXPECTED THIS WEEKEND WITH A HIGH RISK OF
RIP CURRENTS AT THE BEACHES.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT.

MOSES

Nearby

Red Flag Warnings in Florida, 2013Every red flag warning in 2013

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.