Alert archive / Florida / Red Flag Warnings in 2017

Red Flag Warning 12, NWS Miami, FL

May 9, 2017Broward County, Florida

NWS Miami, FL issued this red flag warning at May 9, 2017, 3:35 AM EDT for Broward County, Florida. It took effect at May 9, 2017, 12:00 PM EDT. It was in force for 3 days. 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 9, 2017, 3:35 AM EDT (07:35 UTC)
In effect from
May 9, 2017, 12:00 PM EDT
Expired
May 12, 2017, 7:06 PM EDT
In force
3 days
Issued by
NWS Miami, FL

County Broward County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 00:00Z, 7.6 hours before the alert went out and 40 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, Miami, FL at 00:00Z on 2017-05-09Temperature 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, Miami, FL at 00:00Z on 2017-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.19395878Sfc1 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
2044 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

580 
WWUS82 KMFL 090735
RFWMFL

Urgent - Fire Weather Message
National Weather Service Miami FL
335 AM EDT Tue May 9 2017

FLZ063-066-070-091545-
/O.UPG.KMFL.FW.A.0009.170509T1600Z-170509T2300Z/
/O.NEW.KMFL.FW.W.0012.170509T1600Z-170509T2300Z/
Glades-Hendry-Inland Collier-
335 AM EDT Tue May 9 2017

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM EDT THIS
EVENING FOR LONG DURATION OF CRITICALLY LOW RELATIVE 
HUMIDITIES FOR FIRE WEATHER ZONES 063...066 AND 070...

The National Weather Service in Miami has issued a Red Flag
Warning...which is in effect from noon today to 7 PM EDT this
evening. The Fire Weather Watch is no longer in effect. 


* Affected area...fire weather zones 063...066...070. 

* Wind...Variable around 5 mph this morning, becoming west 5-10
  mph across Glades, Hendry, and Collier counties in the 
  afternoon with the seabreezes.

* Humidity...30 to 35%

* Impacts...Any fires that develop will likely see extreme fire 
  behavior. 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.

&&

$$
11 follow-up statements
336 
WWUS82 KMFL 091912
RFWMFL

Urgent - Fire Weather Message
National Weather Service Miami FL
312 PM EDT Tue May 9 2017

FLZ063-066-070-100315-
/O.EXT.KMFL.FW.W.0012.000000T0000Z-170510T2300Z/
Glades-Hendry-Inland Collier-
312 PM EDT Tue May 9 2017

...RED FLAG WARNING NOW IN EFFECT UNTIL 7 PM EDT WEDNESDAY FOR
LONG DURATION OF CRITICALLY LOW RELATIVE HUMIDITIES FOR FIRE
WEATHER ZONES 063...066 AND 070...

* Affected area...fire weather zones 063...066 and 070. 

* Wind...Easterly winds of 5 to 10 mph will continue through this
  afternoon before decreasing to light and variable tonight. The
  easterly winds will then increase again to around 10 mph by
  Wednesday afternoon.

* Humidity...The low humidities this afternoon will climb into the
  40s by this evening, and continue to climb through the overnight
  hours. The humidities will then fall Wednesday morning and by
  Wednesday afternoon be between 30 and 35 percent for several
  hours. 

* Impacts...any fires that develop will likely see extreme fire 
  behavior. Outdoor burning is not recommended.

$$

CWC/BNB
129 
WWUS82 KMFL 092325
RFWMFL

Urgent - Fire Weather Message
National Weather Service Miami FL
725 PM EDT Tue May 9 2017

FLZ063-066-070-101200-
/O.CON.KMFL.FW.W.0012.000000T0000Z-170510T2300Z/
Glades-Hendry-Inland Collier-
725 PM EDT Tue May 9 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EDT WEDNESDAY
FOR LONG DURATION OF CRITICALLY LOW RELATIVE HUMIDITIES AND 20
FOOT WINDS FOR FIRE WEATHER ZONES 063...066 AND 070...

* Affected area...fire weather zones 063...066 and 070. 

* Wind...Light easterly winds will persist tonight before
  increasing again to around 10 mph by Wednesday afternoon. 

* Humidity...Humidities will continue to increase from the 40s
  this evening to near 100 percent by early Wednesday morning
  before falling again later Wednesday morning. By Wednesday 
  afternoon, the relative humidity values will be between 30 and 
  35 percent for several hours. 

* Impacts...any fires that develop will likely see extreme fire 
  behavior. Outdoor burning is not recommended.

$$

CWC/BNB
691 
WWUS82 KMFL 100757
RFWMFL

Urgent - Fire Weather Message
National Weather Service Miami FL
357 AM EDT Wed May 10 2017

FLZ063-066-070-101600-
/O.CON.KMFL.FW.W.0012.000000T0000Z-170510T2300Z/
Glades-Hendry-Inland Collier-
357 AM EDT Wed May 10 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING
FOR LONG DURATION OF CRITICALLY LOW RELATIVE HUMIDITIES AND 20
FOOT WINDS FOR FIRE WEATHER ZONES 063...066 AND 070...

* Affected area...fire weather zones 063...066 and 070. 

* Wind...Light easterly winds will increase to around 10 mph by
  this afternoon. 

* Humidity...Humidities will fall again later this morning, and
  expected to drop to the 30 to 35 percent range for several 
  hours during the afternoon.
 
* Impacts...any fires that develop will likely see extreme fire
  behavior. Outdoor burning is not recommended.

$$
422 
WWUS82 KMFL 102101
RFWMFL

Urgent - Fire Weather Message
National Weather Service Miami FL
501 PM EDT Wed May 10 2017

FLZ063-066-070-110915-
/O.EXT.KMFL.FW.W.0012.000000T0000Z-170512T0000Z/
Glades-Hendry-Inland Collier-
501 PM EDT Wed May 10 2017

...RED FLAG WARNING NOW IN EFFECT UNTIL 8 PM EDT THURSDAY FOR 
LONG DURATION OF CRITICALLY LOW RELATIVE HUMIDITIES FOR FIRE 
WEATHER ZONES 063...066 AND 070...

* Affected area...fire weather zones 063...066 and 070. 

* Wind...east winds 5 to 10 mph this afternoon, except southwest
  10 to 15 mph over western portions of the zones, will become
  light and variable after 10 PM tonight. Wind will become south
  to southwest 5 to 10 mph by mid-morning Thursday, increasing to
  10 to 15 mph across western portions of the affected zones. 

* Humidity...relative humidity values in the high 20s and 30s late
  this afternoon will climb into the 40s by 8 PM this evening,
  then continue to recover through the overnight hours. Relative
  humidity values will then drop into the 25 to 30 percent range
  over most of Glades County and northern portions of Hendry
  County between 1 and 5 PM Thursday, with values dropping into
  the 30 to 35 percent range elsewhere. Humidity values will reach
  critical values for at least 6 hours.

* Impacts...any fires that develop will likely see extreme fire 
  behavior. Outdoor burning is not recommended.

$$

Molleda
686 
WWUS82 KMFL 110825
RFWMFL

Urgent - Fire Weather Message
National Weather Service Miami FL
425 AM EDT Thu May 11 2017

FLZ063-066-070-111630-
/O.CON.KMFL.FW.W.0012.000000T0000Z-170512T0000Z/
Glades-Hendry-Inland Collier-
425 AM EDT Thu May 11 2017


..RED FLAG WARNING NOW IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR 
LONG DURATION OF CRITICALLY LOW RELATIVE HUMIDITIES FOR FIRE 
WEATHER ZONES 063...066 AND 070...

* Affected area...fire weather zones 063...066 and 070. 

* Wind...5 to 10 mph this morning, mainly from the southwest, then
  increasing to 10 to 15 mph across western portions of the 
  affected zones. 

* Humidity...extended periods of relative humidity values in the 
  upper 20s to low 30s over most of Glades County and northern 
  portions of Hendry County this afternoon. Values will drop into 
  the 30 to 35 percent range elsewhere. 

* Impacts...any fires that develop will likely see extreme fire 
  behavior. Outdoor burning is not recommended.

$$
404 
WWUS82 KMFL 111922
RFWMFL

Urgent - Fire Weather Message
National Weather Service Miami FL
322 PM EDT Thu May 11 2017

FLZ063-066-120330-
/O.EXT.KMFL.FW.W.0012.000000T0000Z-170513T0100Z/
Glades-Hendry-
322 PM EDT Thu May 11 2017

...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM EDT FRIDAY FOR LOW
RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 063 AND 066...

* Affected area...fire weather zones 063 and 066. 

* Wind... Southwest at 10 to 15 mph this afternoon, 5 to 10 mph
  tonight, then increasing to 10 to 15 mph Friday.

* Humidity...extended periods of relative humidity values in the
  low to mid 30s over most of Glades County and northern portions
  of Hendry County this afternoon.

* Impacts...any fires that develop will likely see extreme fire 
  behavior. Outdoor burning is not recommended.

$$

FLZ070-120000-
/O.CON.KMFL.FW.W.0012.000000T0000Z-170512T0000Z/
Inland Collier-
322 PM EDT Thu May 11 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING
FOR LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 070...

* Affected area...fire weather zones 070.

* Wind...Southwest at 10 to 15 mph.

* Humidity...extended periods of relative humidity values in the
  mid to upper 30s.

* Impacts...any fires that develop will likely see extreme fire 
  behavior. Outdoor burning is not recommended.

$$
925 
WWUS82 KMFL 112333
RFWMFL

Urgent - Fire Weather Message
National Weather Service Miami FL
733 PM EDT Thu May 11 2017

FLZ070-121200-
/O.EXT.KMFL.FW.W.0012.000000T0000Z-170513T0100Z/
Inland Collier-
733 PM EDT Thu May 11 2017

...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM EDT FRIDAY FOR LOW
HUMIDITY AND 20 FOOT WINDS FOR FIRE WEATHER ZONE 070...

* Affected area...fire weather zones 070.

* Wind...South to southwest 20 foot winds around 10 to 15 mph
  Friday afternoon.

* Humidity...Humidities will fall down into the 30s Friday
  afternoon for several hours.

* Impacts...any fires that develop will likely see extreme fire 
  behavior. Outdoor burning is not recommended.

$$

FLZ063-066-121200-
/O.CON.KMFL.FW.W.0012.000000T0000Z-170513T0100Z/
Glades-Hendry-
733 PM EDT Thu May 11 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM EDT FRIDAY FOR
LOW HUMIDITIES AND 20 FOOT WINDS FOR FIRE WEATHER ZONES 063 AND 
066...

* Affected area...fire weather zones 063 and 066. 

* Wind...South to southwest 20 foot winds 10 to 15 mph Friday
  afternoon.

* Humidity...Humidities falling down to around 30 percent Friday
  afternoon for several hours.

* Impacts...any fires that develop will likely see extreme fire 
  behavior. Outdoor burning is not recommended.

$$

FLZ067-071-121200-
/O.NEW.KMFL.FW.A.0010.170512T1600Z-170513T0000Z/
Inland Palm Beach-Inland Broward-
733 PM EDT Thu May 11 2017

...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH
FRIDAY EVENING FOR LOW HUMIDITIES AND 20 FOOT WINDS FOR FIRE 
WEATHER ZONES 067 AND 071...

The National Weather Service in Miami has issued a Fire Weather
Watch...which is in effect from Friday afternoon through Friday
evening. 

* Affected area...fire weather zones 067 and 071. 

* Wind...South to southwest 20 foot winds around 15 mph Friday
  afternoon.

* Humidity...Humidities falling into the lower to mid 30s for
  several hours Friday afternoon.

* Impacts...any fires that develop will likely see extreme fire 
  behavior. Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

Baxter
978 
WWUS82 KMFL 120804
RFWMFL

Urgent - Fire Weather Message
National Weather Service Miami FL
404 AM EDT Fri May 12 2017

FLZ063-066-070-121615-
/O.CON.KMFL.FW.W.0012.000000T0000Z-170513T0100Z/
Glades-Hendry-Inland Collier-
404 AM EDT Fri May 12 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM EDT THIS EVENING
FOR LOW HUMIDITIES AND 20 FOOT WINDS FOR FIRE WEATHER ZONES
063 AND 066...

* Affected area...fire weather zones 063...066 and 070. 

* Wind...Southwest 20 foot winds around 10 to 15 mph in the 
  afternoon.

* Humidity...humidities will fall down into the 30s in the
  afternoon for several hours.

* Impacts...any fires that develop will likely see extreme fire 
  behavior. Outdoor burning is not recommended.

$$

FLZ067-071-121615-
/O.CON.KMFL.FW.A.0010.170512T1600Z-170513T0000Z/
Inland Palm Beach-Inland Broward-
404 AM EDT Fri May 12 2017

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM NOON EDT TODAY
THROUGH THIS EVENING FOR LOW HUMIDITIES AND 20 FOOT WINDS FOR
FIRE WEATHER ZONES 067 AND 071...

* Affected area...fire weather zones 067 and 071. 

* Wind...South to southwest 20 foot winds 10 to 15 mph this
  afternoon.

* Humidity...humidities falling down to around 30 percent this
  afternoon for several hours.

* Impacts...any fires that develop will likely see extreme fire 
  behavior. Outdoor burning is not recommended.

$$
175 
WWUS82 KMFL 121359
RFWMFL

Urgent - Fire Weather Message
National Weather Service Miami FL
959 AM EDT Fri May 12 2017

FLZ067-071-130000-
/O.UPG.KMFL.FW.A.0010.170512T1600Z-170513T0000Z/
/O.EXB.KMFL.FW.W.0012.170512T1600Z-170513T0000Z/
Inland Palm Beach-Inland Broward-
959 AM EDT Fri May 12 2017

..RED FLAG WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR LOW 
HUMIDITIES AND 20 FOOT WINDS FOR FIRE WEATHER ZONES 067 AND 071...

The National Weather Service in Miami has issued a Red Flag
Warning...which is in effect until 8 PM EDT this evening.

* Affected area...Fire weather zones 067 and 071. 

* Wind...South-southwest around 10 mph and gusty this afternoon

* Humidity...35 to 40 percent.

* Impacts...Any fires that develop will likely see extreme fire 
  behavior. 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.

&&

$$

FLZ063-066-070-130000-
/O.EXT.KMFL.FW.W.0012.000000T0000Z-170513T0000Z/
Glades-Hendry-Inland Collier-
959 AM EDT Fri May 12 2017

...RED FLAG WARNING NOW IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR
LOW HUMIDITIES AND 20 FOOT WINDS FOR FIRE WEATHER ZONES 063...066
AND 070...

* Affected area...Fire weather zones 063...066 and 070. 

* Wind...Southwest around 10 mph and gusty this afternoon

* Humidity...30 to 40 percent.

* Impacts...Any fires that develop will likely see extreme fire 
  behavior. Outdoor burning is not recommended.

$$
265 
WWUS82 KMFL 121912
RFWMFL

Urgent - Fire Weather Message
National Weather Service Miami FL
312 PM EDT Fri May 12 2017

FLZ063-130315-
/O.NEW.KMFL.FW.A.0011.170513T1700Z-170513T2300Z/
/O.CON.KMFL.FW.W.0012.000000T0000Z-170513T0000Z/
Glades-
312 PM EDT Fri May 12 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING
FOR LOW HUMIDITIES AND 20 FOOT WINDS FOR FIRE WEATHER ZONE 063...

...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH 
SATURDAY EVENING FOR LOW HUMIDITIES AND 20 FOOT WINDS FOR FIRE 
WEATHER ZONE 063...

The National Weather Service in Miami has issued a Fire Weather
Watch...which is in effect from Saturday afternoon through
Saturday evening. 

* Affected area...fire weather zones 063.

* Wind...South-southwest around 10 mph and gusty through this
  afternoon before decreasing to light and variable tonight. The
  southwest winds will then increase to around 15 mph by Saturday
  afternoon.

* Humidity...Between 30 and 35 percent for several hours this
  afternoon. Expect values to recover overnight then drop to
  between 35 and 40 percent for several hours Saturday afternoon.

* Impacts...any fires that develop will likely see extreme fire 
  behavior. 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.


A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

FLZ066-067-070-071-130000-
/O.CON.KMFL.FW.W.0012.000000T0000Z-170513T0000Z/
Hendry-Inland Palm Beach-Inland Collier-Inland Broward-
312 PM EDT Fri May 12 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING
FOR LOW HUMIDITIES AND 20 FOOT WINDS FOR FIRE WEATHER ZONES 
066...067...070 AND 071...

* Affected area...fire weather zones 066...067...070 and 071. 

* Wind...South-southwest around 10 mph and gusty this afternoon

* Humidity...35 to 40 percent.

* Impacts...any fires that develop will likely see extreme fire 
  behavior. 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.

$$
469 
WWUS82 KMFL 122306
RFWMFL

Urgent - Fire Weather Message
National Weather Service Miami FL
706 PM EDT Fri May 12 2017

FLZ063-131200-
/O.CAN.KMFL.FW.W.0012.000000T0000Z-170513T0000Z/
/O.CON.KMFL.FW.A.0011.170513T1700Z-170513T2300Z/
Glades-
706 PM EDT Fri May 12 2017

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SATURDAY EVENING FOR LOW RELATIVE HUMIDITY AND 20 FOOT 
WINDS FOR FIRE WEATHER ZONE 063... 

...RED FLAG WARNING IS CANCELLED FOR LOW RELATIVE 
HUMIDITY AND 20 FOOT WINDS TODAY FOR FIRE WEATHER ZONE 063...

The National Weather Service in Miami has cancelled the Red Flag
Warning. 

* Wind...20 foot southwest winds around 15 mph Saturday
  afternoon.

* Humidity..Humidities will fall down into the upper 30s 
  Saturday afternoon for several hours.

* Impacts...any fires that develop will likely see extreme fire 
  behavior. Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

FLZ066-067-070-071-130015-
/O.CAN.KMFL.FW.W.0012.000000T0000Z-170513T0000Z/
Hendry-Inland Palm Beach-Inland Collier-Inland Broward-
706 PM EDT Fri May 12 2017

...RED FLAG WARNING IS CANCELLED FOR RELATIVE HUMIDITY AND 
20 FOOT WINDS FOR FIRE WEATHER ZONES 066...067...070 AND 071...

The National Weather Service in Miami has cancelled the Red Flag
Warning. 

Relative humidity values have increased above 40 percent early
this evening. Therefore, the Red Flag Warning has been canceled. 

$$

Nearby

Red Flag Warnings in Florida, 2017Every red flag warning in 2017

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.