Red Flag Warning 49, NWS Denver/Boulder, CO

128 
WWUS85 KBOU 280604
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
1204 AM MDT Sun Jun 28 2026

...PROLONGED CRITICAL FIRE WEATHER CONDITIONS EXPECTED FOR THE
HIGH COUNTRY AGAIN ON SUNDAY... POTENTIALLY CONTINUING INTO THE 
UPCOMING WEEK...

A warm and dry airmass will coincide with gusty west and 
southwest winds on Sunday, potentially continuing into early next 
week. Sustained winds are expected to exceed 20 to 30 mph across 
much of the high country Sunday afternoon, with gusts to 40 mph, 
strongest for exposed areas and higher elevations. These 
conditions will drive very high fire danger across the warned 
area. Any new starts or established fires will likely spread 
rapidly under these conditions.

COZ211>214-216-218-281415-
/O.EXP.KBOU.FW.W.0048.000000T0000Z-260628T0600Z/
/O.CON.KBOU.FW.W.0049.260628T1700Z-260629T0300Z/
Jackson County Below 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Grand and Summit Counties Below 9000 Feet-
Central and Southeast Park County-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
1204 AM MDT Sun Jun 28 2026

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE
MOUNTAINS AND HIGH VALLEYS...
...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE
HUMIDITY FOR THE MOUNTAINS AND HIGH VALLEYS...

* AFFECTED AREA...Fire Weather Zones 211, 212, 213, 214, 216 and 
  218.

* TIMING...From 11 AM this morning to 9 PM MDT this evening.

* WINDS...Southwest 15 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 12 percent.

* IMPACTS...Conditions will be favorable for rapid fire spread. 
  Avoid outdoor burning and any activity that may produce a 
  spark and start a wildfire.

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.

&&

$$

COZ217-280715-
/O.EXP.KBOU.FW.W.0048.000000T0000Z-260628T0600Z/
West Jackson and West Grand Counties Above 9000 Feet-
1204 AM MDT Sun Jun 28 2026

...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE
HUMIDITY FOR THE PARK RANGE MOUNTAINS...

Winds have decreased so the Red Flag Warning has expired.

$$

983 
WWUS85 KBOU 280849
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
249 AM MDT Sun Jun 28 2026

...PROLONGED CRITICAL FIRE WEATHER CONDITIONS EXPECTED FOR THE
HIGH COUNTRY TODAY AND AGAIN ON MONDAY...POTENTIALLY CONTINUING 
THROUGH THE UPCOMING WEEK...

A warm and dry airmass will coincide with gusty west and
southwest winds today, potentially continuing into early next 
week. Sustained winds are expected to exceed 20 to 30 mph across 
much of the high country Sunday afternoon, with gusts to 40 mph, 
strongest for exposed areas and higher elevations. These 
conditions will drive very high fire danger across the warned 
area. Any new starts or established fires will likely spread 
rapidly under these conditions.

COZ212>214-216-281700-
/O.NEW.KBOU.FW.A.0040.260629T1800Z-260630T0300Z/
/O.CON.KBOU.FW.W.0049.260628T1700Z-260629T0300Z/
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Grand and Summit Counties Below 9000 Feet-
Central and Southeast Park County-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
249 AM MDT Sun Jun 28 2026

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE
MOUNTAINS...HIGH VALLEYS AND SOUTHERN FOOTHILLS... 
...FIRE WEATHER WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH 
MONDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE 
MOUNTAINS...HIGH VALLEYS AND SOUTHERN FOOTHILLS...

The National Weather Service in Denver has issued a Fire Weather
Watch for wind and low relative humidity, which is in effect from
Monday afternoon through Monday evening.

* AFFECTED AREA...Fire Weather Zones 212, 213, 214 and 216.

* TIMING...For the Red Flag Warning, from 11 AM this morning to 
  9 PM MDT this evening. For the Fire Weather Watch, from Monday 
  afternoon through Monday evening.

* WINDS...Southwest 15 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Conditions will be favorable for rapid fire spread. 
  Avoid outdoor burning and any activity that may produce a 
  spark and start a wildfire.

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.

&&

$$

COZ211-218-281700-
/O.CON.KBOU.FW.W.0049.260628T1700Z-260629T0300Z/
Jackson County Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
249 AM MDT Sun Jun 28 2026

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE
MOUNTAINS AND VALLEYS

* AFFECTED AREA...Fire Weather Zones 211 and 218.

* TIMING...From 11 AM this morning to 9 PM MDT this evening.

* WINDS...Southwest 15 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 12 percent.

* IMPACTS...Conditions will be favorable for rapid fire spread. 
  Avoid outdoor burning and any activity that may produce a 
  spark and start a wildfire.

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.

&&

$$

260 
WWUS85 KBOU 281840
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
1240 PM MDT Sun Jun 28 2026

...PROLONGED CRITICAL FIRE WEATHER CONDITIONS EXPECTED FOR THE
HIGH COUNTRY TODAY AND AGAIN ON MONDAY...POTENTIALLY CONTINUING
THROUGH THE UPCOMING WEEK...

A warm and dry airmass will coincide with gusty west and
southwest winds today and Monday, and could potentially continue
through most of the upcoming week. Sustained winds are expected 
to exceed 20 to 30 mph across much of the high country Sunday 
afternoon, with gusts up to 45 mph, strongest for exposed areas 
and higher elevations. These conditions will drive very high fire 
danger across the warned area. Any new starts or established fires
will likely spread rapidly under these conditions.

COZ212>214-216-290330-
/O.UPG.KBOU.FW.A.0040.260629T1800Z-260630T0300Z/
/O.NEW.KBOU.FW.W.0050.260629T1800Z-260630T0300Z/
/O.CON.KBOU.FW.W.0049.000000T0000Z-260629T0300Z/
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Grand and Summit Counties Below 9000 Feet-
Central and Southeast Park County-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
1240 PM MDT Sun Jun 28 2026

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS...HIGH
VALLEYS AND SOUTHERN FOOTHILLS...
...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT MONDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR MIDDLE PARK, SOUTH PARK, AND
THE MOUNTAINS AND FOOTHILLS ALONG AND SOUTH OF I-70...

The National Weather Service in Denver has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from noon to 9 PM MDT Monday. The Fire Weather Watch is no longer
in effect.

* AFFECTED AREA...Fire Weather Zones 212, 213, 214 and 216.

* TIMING...For the first Red Flag Warning, until 9 PM MDT this 
  evening. For the second Red Flag Warning, from noon to 9 PM 
  MDT Monday.

* WINDS...Southwest 20 to 30 mph with gusts up to 45 mph both
  Sunday and Monday.

* RELATIVE HUMIDITY...Between 9 and 14 percent both Sunday and
  Monday.

* IMPACTS...Conditions will be favorable for rapid fire spread. 
  Avoid outdoor burning and any activity that may produce a 
  spark and start a wildfire.

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.

&&

$$

COZ211-218-290300-
/O.CON.KBOU.FW.W.0049.000000T0000Z-260629T0300Z/
Jackson County Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
1240 PM MDT Sun Jun 28 2026

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTH PARK AND THE
NORTHERN FRONT RANGE MOUNTAINS...

* AFFECTED AREA...Fire Weather Zones 211 and 218.

* TIMING...Until 9 PM MDT this evening.

* WINDS...Southwest 15 to 25 mph with gusts up to 45 mph.

* RELATIVE HUMIDITY...As low as 12 percent.

* IMPACTS...Conditions will be favorable for rapid fire spread. 
  Avoid outdoor burning and any activity that may produce a 
  spark and start a wildfire.

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.

&&

$$

Area Forecast Discussion
National Weather Service Denver/Boulder CO
1222 PM MDT Sat Jun 27 2026

.KEY MESSAGES...

- Widespread and prolonged critical fire weather conditions will
  be present in the high country this weekend as warm, dry and
  windy conditions develop, continuing at times into early next
  week.

- Warmer today with an isolated severe thunderstorm possible over
  the far northeast plains this afternoon into the early evening
  hours.

- All areas will trend warmer and drier for Sunday, with little
  change through the middle part of next week. The only exception
  will be for a slight chance of thunderstorms over the plains on
  Tuesday.

&&

.DISCUSSION /Through Friday/...
Issued at 219 AM MDT Sat Jun 27 2026

A stg upper level storm system for late June will be over the nwrn
US today and move into the nrn Rockies on Sun.  This will allow for
rather stg SW mid level flow to remain across the area today and
Sun.  For this aftn, a pseudo dry line will be over the far nern
plains where MLCAPE will be around 2000 j/kg with decent shear. As a
result, an isold svr storm will be possible mainly east of Sterling
during the late aftn and early evening hours. Further west it will
be dry and hot with gusty SW winds from the higher terrain across
most of the plains. Highs will rise into the 90's across most of
nern CO except for the far nern plains where readings will be in
the upper 80s.

On Sun, it will be dry and hot with highs remaining in the 90's
across nern CO.  Once again with decent mid level flow will see
gusty SW winds across the higher terrain and portions of the plains.

By Mon, an upper level trough will extend from the nrn Rokcies into
California.  This will allow for SW flow aloft to remain over the
area.  A weak cool front will move across the plains in the morning
which will allow for slightly cooler temperatures across the plains.
Overall there isn't much low level moisture behind this front and
with a cap in place, tstm chances look minimal across the plains.

For Tue, SW flow aloft will continue as a disturbance moves from the
Great Basin into Wyoming by Tue night.  At the sfc, the low level
flow will become southerly across the plains.  As a result, this
will allow some return of lower level moisture by aftn with a pseudo
dryline setting up over the plains.  If the cap can be broken, there
would be at least a slight chc of tstms east of this boundary from
late aftn through the early evening hours.  Thus have kept in 20-30
percent pops over the nern plains.  Further west it will remain dry
from the I-25 Corridor across the higher terrain.

Looking ahead to mid week, SW flow aloft looks like it will
continue.  Overall it looks mainly dry both Wed and Thu with highs
in the 90's across the plains.

&&

.AVIATION /18Z TAFS through 18Z Sunday/...
Issued at 1220 PM MDT Sat Jun 27 2026

Winds are already gusting to 25-30KT from the SW-SSW at KDEN and
KAPA. Gusty southwest winds are expected to continue through the
afternoon, with gusts weakening by ~02Z. Winds at KBJC have been a
bit tricky due to airflow-terrain interactions, and the direction
has had more of a southeasterly component. Steady southerly drainage
winds are expected to be in place at the three airports overnight.
Another breezy day with gusts up to 25KT appears to be in store for
tomorrow, although the prevailing wind direction will be more
southerly than today's. One point of uncertainty for tomorrow's wind
forecast is the potential for a cyclone developing north of the
Denver metro area mid-afternoon. If a cyclone were to develop, winds
at KBJC would take on a northwesterly component although KDEN and
KAPA would likely remain S-SW.

Near-surface smoke concentrations from the wildfires in Utah remain
low through the TAF period. However, model guidance suggests some
light smoke concentrations aloft making its way to the Denver
area between 00Z-03Z today which could briefly impact slantwise
visibility as the sun begins to set.

&&

.FIRE WEATHER...
Issued at 219 AM MDT Sat Jun 27 2026

Critical fire weather conditions will be in place across all of
the high country today, as a much warmer and drier airmass moves
into the region, with winds also strengthening considerably
across the higher elevations. Relative humidity is expected to
fall to around 10-15% during the afternoon with wind gusts of
35-50 mph possible.

The warm, dry, and windy conditions will continue on Sunday across
much of the same area. There may be some very modest improvement
to minimum humidity values across the northern mountains, but
critical fire weather conditions are still likely to continue. The
pattern is not expected to change significantly next week, with
elevated to critical fire weather conditions possible each day.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
Red Flag Warning until midnight MDT tonight for COZ211>214-
216>218.

Fire Weather Watch from Sunday morning through Sunday evening
for COZ211>214-216-218.

&&

DISCUSSION...RPK
AVIATION...AA
FIRE WEATHER...RPK