Alert archive / Florida / Red Flag Warnings in 2017
Red Flag Warning 6, NWS Miami, FL
NWS Miami, FL issued this red flag warning at Apr 20, 2017, 3:45 PM EDT for Collier County, Florida. It took effect at Apr 21, 2017, 11:00 AM EDT. It was in force for 9 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 20, 2017, 3:45 PM EDT (19:45 UTC)
- In effect from
- Apr 21, 2017, 11:00 AM EDT
- Expired
- Apr 21, 2017, 8:00 PM EDT
- In force
- 9 hr
- Issued by
- NWS Miami, FL
County Collier County, FL
The radar
The Miami radar (KAMX), 111 km from the middle of the area, began a volume at 19:48 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
Miami, FL (KMFL), launched 12:00Z, 7.8 hours before the alert went out and 113 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.
- Mixed-layer CAPE
- 8 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 1047 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
021 WWUS82 KMFL 201945 RFWMFL Urgent - Fire Weather Message National Weather Service Miami FL 345 PM EDT Thu Apr 20 2017 FLZ063-066-070-220000- /O.UPG.KMFL.FW.A.0005.170421T1500Z-170422T0000Z/ /O.NEW.KMFL.FW.W.0006.170421T1700Z-170422T0000Z/ Glades-Hendry-Inland Collier- 345 PM EDT Thu Apr 20 2017 ...RED FLAG WARNING IN EFFECT FROM 1 PM TO 8 PM EDT FRIDAY FOR for long duration of low 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 1 PM to 8 PM EDT Friday. * Affected area...fire weather zones 063...066...and...070. * Wind...Around 10 mph. * Humidity...Relative humidity values will fall to 35 to 40%. * 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. && $$
1 follow-up statement
118 WWUS82 KMFL 210748 RFWMFL Urgent - Fire Weather Message National Weather Service Miami FL 348 AM EDT Fri Apr 21 2017 FLZ069-220000- /O.EXB.KMFL.FW.W.0006.170421T1500Z-170422T0000Z/ Coastal Collier- 348 AM EDT Fri Apr 21 2017 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING FOR LOW HUMIDITY AND 20 FOOT WINDS FOR FIRE WEATHER ZONE 069... The National Weather Service in Miami has issued a Red Flag Warning...which is in effect from 11 AM this morning to 8 PM EDT this evening. * Affected area...fire weather zones 069. * Wind...Around 10 mph. * Humidity...Relative humidity values will fall to around 40% this afternoon. * Impacts...any fires that develop will likely see extreme fire behavior. Outdoor burning is not recommended. $$ FLZ063-066-070-220000- /O.EXT.KMFL.FW.W.0006.170421T1500Z-170422T0000Z/ Glades-Hendry-Inland Collier- 348 AM EDT Fri Apr 21 2017 ...RED FLAG WARNING NOW IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING FOR LOW HUMIDITY AND 20 FOOT WINDS FOR FIRE WEATHER ZONES 063...066 AND 070... * Affected area...fire weather zones 063...066 and 070. * Wind...Around 10 mph. * Humidity...Relative Humidity will fall down into the mid to upper 30s this afternoon for several hours. * Impacts...any fires that develop will likely see extreme fire behavior. Outdoor burning is not recommended. $$ Baxter
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 3:47 AM EDT | Fire Weather Watch | MFL | 12 hr |
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; radar from the NEXRAD Level II archive.