Red Flag Warning 34, NWS Denver/Boulder, CO

810 
WWUS85 KBOU 140202
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
802 PM MDT Mon Apr 13 2026

COZ247-141015-
/O.EXP.KBOU.FW.W.0033.000000T0000Z-260414T0200Z/
/O.CON.KBOU.FW.W.0034.260414T1700Z-260415T0200Z/
Southeast Elbert County Below 6000 Feet/South Lincoln County-
802 PM MDT Mon Apr 13 2026

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTHERN LINCOLN
COUNTY...
...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE
HUMIDITY FOR SOUTHERN LINCOLN COUNTY...

* AFFECTED AREA...Fire Weather Zone 247.

* TIMING...From 11 AM to 8 PM MDT Tuesday.

* WINDS...West 10 to 20 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 9 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.

&&

$$

COZ214-216-238-241-242-246-140315-
/O.EXP.KBOU.FW.W.0033.000000T0000Z-260414T0200Z/
Central and Southeast Park County-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Larimer County Below 6000 Feet/Northwest Weld County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
802 PM MDT Mon Apr 13 2026

...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE
HUMIDITY FOR SOUTH PARK, THE SOUTHERN FRONT RANGE FOOTHILLS,
PALMER DIVIDE INTO EAST CENTRAL COLORADO, AND EASTERN LARIMER AND
NORTHWEST WELD COUNTIES...

Winds have decreased.

$$

526 
WWUS85 KBOU 140848
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
248 AM MDT Tue Apr 14 2026

COZ247-142200-
/O.CON.KBOU.FW.W.0034.260414T1700Z-260415T0200Z/
Southeast Elbert County Below 6000 Feet/South Lincoln County-
248 AM MDT Tue Apr 14 2026

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
SOUTHERN LINCOLN COUNTY...

* AFFECTED AREA...Fire Weather Zone 247.

* TIMING...From 11 AM this morning to 8 PM MDT this evening.

* WINDS...Southwest 15 to 20 mph with gusts up to 35 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.

&&

$$

614 
WWUS85 KBOU 142032
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
232 PM MDT Tue Apr 14 2026

COZ247-150200-
/O.CON.KBOU.FW.W.0034.000000T0000Z-260415T0200Z/
Southeast Elbert County Below 6000 Feet/South Lincoln County-
232 PM MDT Tue Apr 14 2026

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTHERN LINCOLN COUNTY...

* AFFECTED AREA...Fire Weather Zone 247.

* TIMING...Until 8 PM MDT this evening.

* WINDS...Southwest 15 to 20 mph with gusts up to 30 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.

&&

$$

241 
WWUS85 KBOU 150205
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
805 PM MDT Tue Apr 14 2026

COZ247-150315-
/O.EXP.KBOU.FW.W.0034.000000T0000Z-260415T0200Z/
Southeast Elbert County Below 6000 Feet/South Lincoln County-
805 PM MDT Tue Apr 14 2026

...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE
HUMIDITY FOR SOUTHERN LINCOLN COUNTY...

The Red Warning Warning for southern Lincoln County has expired 
at 8 PM MDT. Humidity levels were climbing this evening with the
cooling temperatures. 

$$

Area Forecast Discussion
National Weather Service Denver/Boulder CO
1132 AM MDT Mon Apr 13 2026

.KEY MESSAGES...

- Critical fire weather conditions again today over the southern
  portions of the forecast area and the plains near the Wyoming
  border.

- The next system will bring cooler temperatures and a decent
  chance of precipitation to the forecast area Tuesday into early
  Wednesday. A few inches of snow for the higher mountains with
  slick travel possible over the higher passes mainly at night.

- Another storm system is possible for the forecast area Thursday
  night into Saturday.

&&

.DISCUSSION /Through Sunday/...
Issued at 1157 PM MDT Sun Apr 12 2026

Satellite pictures are showing mainly upper level cloudiness
moving northeastward across Colorado in southwesterly flow aloft.
Fairly weak low level drainage winds were in place across the most
of CWA late this evening. High temperatures reached the mid 70s
to lower 80s across the plains Sunday afternoon, with current
readings in the upper 40s and 50s.

Models continue to show increasing southwesterly flow aloft for the
CWA overnight through Tuesday with jet level speeds getting into the
85 to 110 knot range Monday afternoon through early Tuesday
afternoon. Speeds decrease later Tuesday afternoon as an upper
trough pushes eastward across the forecast area through mid
morning Wednesday. There is fairly strong upward synoptic scale
energy with the trough on the QG Omega fields late Monday night
through Tuesday morning. Thickness grids now show the main cold
front to move across the CWA Tuesday afternoon and evening. On
Wednesday, there is weak upper ridging over the CWA, then it's
back to southwesterly flow aloft on Thursday ahead of the next
system on Friday. There isn't much in the way of synoptic scale
energy both Wednesday and Thursday.

There is some mid and upper level moisture around on Monday, then
deeper moisture associated with the trough is expected to get
into the western half of the CWA later Monday night into Tuesday
morning. The better moisture finally gets into the eastern half of
the forecast area later Tuesday afternoon and evening. Moisture
lingers over the mountains into Wednesday morning. Will leave the
high pops in the mountains (70-90%s) Tuesday and Tuesday evening.
As it still looks pretty warm Tuesday, the freezing level remains
fairly high and alpine snowfall amounts and impacts do not look
significant enough for highlights at this time. Neighboring office
concur. Over the plains will go with 30-70% pops Tuesday
afternoon and night. Of note, it still looks like much of the
forecast area will see measurable precipitation Tuesday into
Wednesday, albeit not significant amounts. Moisture is pretty lean
the rest of Wednesday into Thursday morning, then some upper
level moisture pushes in Thursday afternoon.

For temperatures, highs will continue to be above seasonal normals
on Monday with low to mid 70s for the plains. Tuesday's highs now
look to be in the upper 50s to upper 60s, with mid 60s to lower 70s
Wednesday. and back into the 70s on Thursday.

For the later days, Friday through Monday, models are still showing
a substantial upper level trough to move across Colorado Friday into
Saturday.  There is still a cold front with upslope flow over the
plains as well as measurable precipitation on the QPF fields.
However, it does not look as strong as it did on yesterday's models
at this current time.  As there are still many model runs to come
between now and Friday, it will continue bear watching.  Upper
ridging moves in late Saturday continuing through Sunday night
with southwesterly flow aloft by Monday. The airmass looks pretty
dry Saturday through Monday. Temperatures should be below seasonal
normals Friday and Saturday, then warm up Sunday and Monday.

&&

.AVIATION /18Z TAFS through 18Z Tuesday/...
Issued at 1132 AM MDT Mon Apr 13 2026

VFR to prevail through the TAF period. Wind forecast will be
challenging through tonight and into Tuesday. Channels of gusty
west winds to 25 knots are expected to the north and south of the
Denver area. In between, wind eddies (circulations) will create
periods of variable winds. Thus confidence will be low. On
Tuesday, northeast winds will prevail during the morning hours,
possibly turning east to northeast late morning and afternoon. A
wind shift to the northwest is expected 20-21Z Tuesday as showers
roll off the foothills. 

&&

.FIRE WEATHER...
Issued at 1157 PM MDT Sun Apr 12 2026

We went with another Red Flag Warning on Monday afternoon for all the
southern CWA border zones and for the north central border plains
Zones along the Cheyenne Ridge. Fire weather conditions will be
critical with humidity levels ranging from 9-16% by afternoon
along with winds gusting up to 30 mph. Fuels remain extremely dry
in these areas.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
Red Flag Warning until 8 PM MDT this evening for COZ214-216-238-
241-242-246-247.

&&

DISCUSSION...66
AVIATION...12
FIRE WEATHER...66

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
319 AM MDT Mon Apr 13 2026

COZ030>051-140930-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
319 AM MDT Mon Apr 13 2026

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

Another day of elevated to critical fire weather conditions can be
expected today due to warm, dry, and breezy weather. The most
critical conditions will occur from Park County and Southern
Jefferson County eastward across the Palmer Divide and into east
central Colorado. That's where wind gusts this afternoon will be
near 30 mph. Similar conditions can also be expected from Fort
Collins to the Wyoming border area. In between, including much of
the Denver and Boulder metro area, winds will be mostly lighter
but it will be just as warm and dry.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Cooler weather and showers are still in the forecast by Tuesday.
A few inches of snow can be expected from late tonight through
Tuesday night in the mountains, with some travel impacts mainly
over the higher passes at night. Scattered rain showers and
isolated thunderstorms can be expected on the plains.

Warmer and drier weather will redevelop for Wednesday into
Thursday, with potential for more critical fire weather
conditions.

A colder storm system will then have an opportunity to bring snow
to the mountains and plains by Friday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.