Alert archive / Florida / Red Flag Warnings in 2021
Red Flag Warning 1, NWS Miami, FL
NWS Miami, FL issued this red flag warning at Jan 28, 2021, 2:59 AM EST for 4 counties in Florida. It took effect at Jan 28, 2021, 11:00 AM EST. It was in force for 5 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
- Jan 28, 2021, 2:59 AM EST (07:59 UTC)
- In effect from
- Jan 28, 2021, 11:00 AM EST
- Expired
- Jan 28, 2021, 4:27 PM EST
- In force
- 5 hr
- Issued by
- NWS Miami, FL
Counties Broward County, FL, Collier County, FL, Miami-Dade County, FL, Monroe County, FL
The radar
The Miami radar (KAMX), 48 km from the middle of the area, began a volume at 07:59 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 00:00Z, 8.0 hours before the alert went out and 53 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
- 1 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 1467 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
613 WWUS82 KMFL 280759 RFWMFL URGENT - FIRE WEATHER MESSAGE National Weather Service Miami FL 259 AM EST Thu Jan 28 2021 FLZ063-066>068-072-074-174-280900- /O.CAN.KMFL.FW.A.0001.210128T1500Z-210129T0000Z/ Glades-Hendry-Inland Palm Beach-Metro Palm Beach-Metro Broward- Metro Miami-Dade-Far South Miami-Dade- 259 AM EST Thu Jan 28 2021 ...FIRE WEATHER WATCH IS CANCELLED FOR FIRE WEATHER ZONES 063, 066, 067, 068, 072, 074, AND 174... The National Weather Service in Miami has cancelled the Fire Weather Watch. While relative humidity values are forecast to fall to critical values along with wind speeds in the 15 to 20 mph range, present indications are that ERC values will remain below 27, precluding the need for a warning at this time. $$ FLZ069>071-073-075-290000- /O.UPG.KMFL.FW.A.0001.210128T1500Z-210129T0000Z/ /O.NEW.KMFL.FW.W.0001.210128T1600Z-210129T0000Z/ Coastal Collier-Inland Collier-Inland Broward-Inland Miami-Dade- Mainland Monroe- 259 AM EST Thu Jan 28 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EST THIS EVENING FOR FIRE WEATHER ZONES 069, 070, 071, 073, AND 075... The National Weather Service in Miami has issued a Red Flag Warning, which is in effect from 11 AM this morning to 7 PM EST this evening. The Fire Weather Watch is no longer in effect. * Affected area...Fire weather zones 069...070...071...073... and 075. * Wind...Northerly wind of 15 miles per hour with higher gusts * Humidity...Minimum relative humidity below 35% * Impacts...Any fires that develop may see extreme fire behavior. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ Weinman/AR
1 follow-up statement
109 WWUS82 KMFL 282127 RFWMFL Urgent - Fire Weather Message National Weather Service Miami FL 427 PM EST Thu Jan 28 2021 FLZ069>071-073-075-282230- /O.CAN.KMFL.FW.W.0001.000000T0000Z-210129T0000Z/ Coastal Collier-Inland Collier-Inland Broward-Inland Miami-Dade- Mainland Monroe- 427 PM EST Thu Jan 28 2021 ...RED FLAG WARNING IS CANCELLED FOR LOW RELATIVE HUMIDITY AND WIND OVER 15 MILES PER HOUR FOR FIRE WEATHER ZONES 069...070...071...073 AND 075... The National Weather Service in Miami has cancelled the Red Flag Warning. With the relative humidity beginning to recover and the wind speeds generally at 10 miles per hour and below, conditions have improved enough to cancel the Red Flag Warning. $$
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 27, 11:31 PM EST | Dense Fog Advisory | MFL | Collier, Glades, Hendry, Monroe | 8 hr |
| Jan 28, 3:01 AM EST | Gale Warning | MFL | 16 hr | |
| Jan 28, 4:36 AM EST | Rip Current Statement | MFL | Palm Beach | 14 hr |
Nearby
Red Flag Warnings in Florida, 2021Every red flag warning in 2021
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.