Red Flag Warning 24, NWS Denver/Boulder, CO

Adams County, CO, Arapahoe County, CO, Boulder County, CO, Broomfield County, CO, Clear Creek County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Gilpin County, CO, Grand County, CO, Jefferson County, CO, Larimer County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Park County, CO, Phillips County, CO, Sedgwick County, CO, Summit County, CO, Washington County, CO, Weld County, CO

412 
WWUS85 KBOU 181941
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
141 PM MDT Mon Sep 18 2017

...Critical to Extreme Fire Weather Conditions Expected Tuesday...

.West to southwest winds will increase Tuesday ahead of a cold
front. Gusts to 50 mph will be possible over the higher terrain
with gusts to 40 mph at lower elevations. These winds combined
with relative humidity values of 8 to 15 percent will result in 
extreme fire weather conditions in places. Winds are expected to 
shift to the north Tuesday evening as the cold front pushes 
through. Relative humidities are expected to rapidly improve 
behind the cold front.

COZ212>216-238-241-246-247-190345-
/O.CON.KBOU.FW.W.0024.170919T1700Z-170920T0200Z/
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-
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-
Larimer County Below 6000 Feet/Northwest Weld County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
141 PM MDT Mon Sep 18 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF NORTH
CENTRAL AND NORTHEAST COLORADO...

* Affected Area...Fire Weather Zones 212...213...214...215... 
  216...238...241...246 and 247.

* Timing...Tuesday. 11 AM through 8 PM.

* Winds...Southwest 10 to 20 mph with gusts up to 45 mph.

* Relative Humidity...as low as 8 percent.

* Impacts...Gusty winds and low relative humidity will result in 
  critical fire weather conditions. Very windy conditions with 
  relative humidities around 10 percent may result in extreme 
  fire weather conditions for areas in and near the foothills.

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.

&&

$$

COZ248-250-251-190345-
/O.EXA.KBOU.FW.A.0021.170919T1700Z-170920T0200Z/
Logan County-Sedgwick County-Phillips County-
141 PM MDT Mon Sep 18 2017

...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR logan,
sedgwick and Phillips County...

The National Weather Service in Denver has issued a Fire Weather
Watch FOR WIND AND LOW RELATIVE HUMIDITY...which is in effect
from Tuesday morning through Tuesday evening.

* Affected Area...Fire Weather Zones 248...250 and 251.

* Timing...11 AM to 8 PM MDT Tuesday.

* Winds...Southwest 10 to 20 mph with gusts up to 30 mph.

* Relative Humidity...as low as 12 percent.

* Impacts...Gusty winds and low relative humidity will result in 
  critical fire weather conditions.

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.

&&

$$

COZ239-240-242>245-249-190345-
/O.CON.KBOU.FW.A.0021.170919T1700Z-170920T0200Z/
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-Northeast Weld County-
Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-Washington County-
141 PM MDT Mon Sep 18 2017

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY MORNING
THROUGH TUESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
WIND AND LOW RELATIVE HUMIDITY FOR THE URBAN CORRIDOR AND
NORTHEAST PLAINS...

* Affected Area...Fire Weather Zones 239...240...242...243... 
  244...245 and 249.

* Timing...11 AM to 8 PM MDT Tuesday.

* Winds...Southwest 10 to 20 mph with gusts up to 30 mph.

* Relative Humidity...as low as 10 percent.

* Impacts...Gusty winds and low relative humidity will result in 
  critical fire weather conditions.

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.

&&

$$

268 
WWUS85 KBOU 190453
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
1053 PM MDT Mon Sep 18 2017

...Critical to Extreme Fire Weather Conditions Expected Tuesday...

.West to southwest winds will increase Tuesday ahead of a cold
front. Gusts to 50 mph will be possible over the higher terrain
with gusts to 40 mph at lower elevations. These winds combined
with relative humidity values of 8 to 15 percent will result in
extreme fire weather conditions in places. Winds are expected to
shift to the north Tuesday evening as the cold front pushes
through. Relative humidities are expected to rapidly improve
behind the cold front.

COZ212>216-238-241-246-247-191300-
/O.CON.KBOU.FW.W.0024.170919T1700Z-170920T0200Z/
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-
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-
Larimer County Below 6000 Feet/Northwest Weld County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
1053 PM MDT Mon Sep 18 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF NORTH
CENTRAL AND PALMER DIVIDE...

* Affected Area...Fire Weather Zones 212...213...214...215... 
  216...238...241...246 and 247.

* Timing...Tuesday. 11 AM through 8 PM.

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

* Relative Humidity...as low as 11 percent.

* Impacts...Gusty winds and low relative humidity will result in 
  critical fire weather conditions. Very windy conditions with 
  relative humidities around 10 percent may result in extreme 
  fire weather conditions for areas in and near the foothills.

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.

&&

$$

COZ239-240-242>245-248>251-191300-
/O.CON.KBOU.FW.A.0021.170919T1700Z-170920T0200Z/
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-Northeast Weld County-
Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-Logan County-
Washington County-Sedgwick County-Phillips County-
1053 PM MDT Mon Sep 18 2017

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY MORNING
THROUGH TUESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
NORTHEAST COLORADO...

* Affected Area...Fire Weather Zones 239...240...242...243... 
  244...245...248...249...250 and 251.

* Timing...11 AM to 8 PM MDT Tuesday.

* Winds...Southwest 5 to 15 mph with gusts up to 30 mph.

* Relative Humidity...as low as 11 percent.

* Impacts...Gusty winds and low relative humidity will result in 
  critical fire weather conditions.

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.

&&

$$

723 
WWUS85 KBOU 190836
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
236 AM MDT Tue Sep 19 2017

...Critical to Extreme Fire Weather Conditions this afternoon into
the early evening hours...

.West to southwest winds will increase ahead of a cold front. 
Gusts to 50 mph will be possible over the higher terrain with 
gusts from 30 to 40 mph at lower elevations. These winds combined
with relative humidity values of 8 to 15 percent will result in 
extreme fire weather conditions in places. Winds are expected to 
shift to the north this evening as a cold front pushes through. 
Relative humidities are expected to rapidly improve behind the 
cold front.

COZ239-240-242>245-248>251-191645-
/O.UPG.KBOU.FW.A.0021.170919T1700Z-170920T0200Z/
/O.EXA.KBOU.FW.W.0024.170919T1700Z-170920T0200Z/
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-Northeast Weld County-
Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-Logan County-
Washington County-Sedgwick County-Phillips County-
236 AM MDT Tue Sep 19 2017

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MDT
THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST
PLAINS OF COLORADO...

The National Weather Service in Denver has issued a Red Flag
Warning FOR WIND AND LOW RELATIVE HUMIDITY...which is in effect
from 11 AM this morning to 8 PM MDT this evening. The Fire
Weather Watch is no longer in effect.

* Affected Area...Fire Weather Zones 239...240...242...243... 
  244...245...248...249...250 and 251.

* Timing...11 AM to 8 PM MDT Tuesday.

* Winds...Southwest 10 to 20 mph with gusts up to 30 mph.

* Relative Humidity...as low as 8 percent.

* Impacts...Gusty winds and low relative humidity will result in 
  critical fire weather conditions.

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.

&&

$$

COZ212>216-238-241-246-247-191645-
/O.CON.KBOU.FW.W.0024.170919T1700Z-170920T0200Z/
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-
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-
Larimer County Below 6000 Feet/Northwest Weld County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
236 AM MDT Tue Sep 19 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR  
THE NORTH CENTRAL MOUNTAINS, FOOTHILLS, SOUTH PARK AND THE PALMER
DIVIDE...

* Affected Area...Fire Weather Zones 212...213...214...215... 
  216...238...241...246 and 247.

* Timing...Tuesday. 11 AM through 8 PM.

* Winds...Southwest 20 to 30 mph with gusts up to 50 mph.

* Relative Humidity...as low as 10 percent.

* Impacts...Gusty winds and low relative humidity will result in
  critical fire weather conditions. Very windy conditions with
  relative humidities around 10 percent may result in extreme fire
  weather conditions for areas in and near the Foothills and over
  the Palmer Divide.

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.

&&

$$

914 
WWUS85 KBOU 191644
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
1044 AM MDT Tue Sep 19 2017

...Critical to Extreme Fire Weather Conditions this afternoon
into the early evening hours...

.West to southwest winds will increase ahead of a cold front.
Gusts to 50 mph will be possible over the higher terrain with
gusts from 30 to 40 mph at lower elevations. These winds combined
with relative humidity values of 8 to 15 percent will result in
extreme fire weather conditions in places. Winds are expected to
shift to the north this evening as a cold front pushes through.
Relative humidities are expected to rapidly improve behind the
cold front.

COZ212>216-238>251-200045-
/O.CON.KBOU.FW.W.0024.170919T1700Z-170920T0200Z/
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-
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-
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-
1044 AM MDT Tue Sep 19 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF
COLORADO...

* Affected Area...Fire Weather Zones 212...213...214...215... 
  216...238...239...240...241...242...243...244...245...246...
  247... 248...249...250 and 251.

* Timing...11 AM to 8 PM MDT Tuesday.

* Winds...Southwest 20 to 30 mph in and near the mountains, and
  foothills with gusts up to 50 mph. Across the Palmer Divide and
  northeast plains, southwest 10 to 20 mph with gusts of 30 to 40
  mph.

* Relative Humidity...as low as 8 percent.

* Impacts...Gusty winds and low relative humidity will result in 
  critical fire weather conditions.

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.

&&

$$

794 
WWUS85 KBOU 191651 CCA
RFWBOU

URGENT - FIRE WEATHER MESSAGE...CORRECTED
National Weather Service Denver/Boulder CO
1051 AM MDT Tue Sep 19 2017

...Critical to Extreme Fire Weather Conditions this afternoon
into the early evening hours...

.West to southwest winds will increase ahead of a cold front.
Gusts to 50 mph will be possible over the higher terrain with
gusts from 30 to 40 mph at lower elevations. These winds combined
with relative humidity values of 8 to 15 percent will result in
extreme fire weather conditions in places. Winds are expected to
shift to the north this evening as a cold front pushes through.
Relative humidities are expected to rapidly improve behind the
cold front.

COZ212>216-238>251-200045-
/O.COR.KBOU.FW.W.0024.170919T1700Z-170920T0200Z/
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-
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-
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-
1051 AM MDT Tue Sep 19 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF
COLORADO...

* Affected Area...Fire Weather Zones 212...213...214...215... 
  216...238...239...240...241...242...243...244...245...246...
  247... 248...249...250 and 251.

* Timing...11 AM to 8 PM MDT.

* Winds...Southwest 20 to 30 mph in and near the mountains, and
  foothills with gusts up to 50 mph. Across the Palmer Divide and
  northeast plains, southwest 10 to 20 mph with gusts of 30 to 40
  mph.

* Relative Humidity...as low as 8 percent.

* Impacts...Gusty winds and low relative humidity will result in 
  critical fire weather conditions.

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.

&&

$$

335 
WWUS85 KBOU 192327
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
527 PM MDT Tue Sep 19 2017

...Critical to Extreme Fire Weather Conditions this afternoon
into the early evening hours...

.A strong dry cold front racing south through northeast Colorado 
late this afternoon will bring sustained northerly winds of 15 to 
30 mph and even higher gusts to around 40 mph to lower elevations. 
At higher elevations of the Front Range mountains, northwest winds 
of 30 to 50 mph are also likely with passage of the cold front. 
The high mountain ridges and peaks in the Jackson and Larimer 
Counties may even see some light snowfall later this evening. The 
strong gusty frontal winds and low relative humidity will create 
extreme fire danger mainly in areas south and east of I-76 through 
early this evening. After the passage of this cold front, expect a 
quick drop off in temperature and a steady rise in relative humidity 
as wind speeds gradually weaken later this evening. This will
quickly lower the wildland fire danger across north central and 
northeast Colorado.

COZ212>216-238>251-200200-
/O.CON.KBOU.FW.W.0024.000000T0000Z-170920T0200Z/
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-
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-
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-
527 PM MDT Tue Sep 19 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF
COLORADO...

* Affected Area...Fire Weather Zones 212...213...214...215... 
  216...238...239...240...241...242...243...244...245...246...
  247... 248...249...250 and 251.

* Timing...until 8 PM MDT.

* Winds...North-northwest 15 to 30 mph. Gusts to 40 mph on the 
  plains and 50 mph over higher elevations.

* Relative Humidity...as low as 15 percent.

* Impacts...Gusty winds with passage of a cold front and 
  low relative humidity will create critical fire weather 
  conditions through early this evening.

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.

&&

$$
Baker

166 
WWUS85 KBOU 200204
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
804 PM MDT Tue Sep 19 2017

COZ212>216-238>251-200315-
/O.EXP.KBOU.FW.W.0024.000000T0000Z-170920T0200Z/
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-
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-
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-
804 PM MDT Tue Sep 19 2017

...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE
HUMIDITY FOR NORTH CENTRAL AND NORTHEAST COLORADO...

Winds will continue to diminish and relative humidities will
steadily rise behind a dry cold front which blow south through 
the area earlier this evening. Therefore the red flag warning has 
been allowed to expire. 

$$
Baker

Area Forecast Discussion
National Weather Service Denver/Boulder CO
1034 AM MDT Mon Sep 18 2017

.UPDATE...
Issued at 1003 AM MDT Mon Sep 18 2017

No significant updates planned in today's period but
reference the fire weather discussion below regarding the
upgrades and expansions planned for the fire weather
highlights for Tuesday.

&&

.SHORT TERM...(Today and tonight)
Issued at 420 AM MDT Mon Sep 18 2017

The water vapor pictures are showing a weak upper trough moving
across the CWA right now. Radars are showing a batch of light rain
showers over the eastern half of the plains right now. They are
moving northeastward. Satellite pictures are also showing it to
be quite clear in the immediate upstream. no measurable
precipitation on the QPF fields today or tonight. Models have
fairy weak west-northwesterly flow aloft for this morning. By
later this afternoon and tonight, weak west-southwesterly flow
aloft is expected. The QG Omega fields show benign synoptic scale
energy for the forecast area today and this evening, then upward
motion moves in later tonight ahead of an approaching upper
trough. The boundary layer winds should be weak and downsloping
this morning. Southeasterlies are progged later this afternoon and
evening, with normal drainage flow tonight in most areas. For
moisture, it continues to dry-out through today and tonight.
Precipitable water values are in the 0.10 to 0.50 inch range from
west to east across the CWA by later tonight. There is a tad of
weak CAPE around early tonight, then nothing later and overnight.
Lapse rate fields on the cross sections show a fairly strong
stable layer around 600 mb today and tonight. It will be dry and
subsident. Once the few showers over the east move out we will
need zero pops today or tonight. For temperatures, today's highs
will be 4-8 C warmer than Sunday's.

.LONG TERM...(Tuesday through Sunday)
Issued at 300 AM MDT Mon Sep 18 2017

WSW flow aloft will increase on Tue as an upper level trough moves
across the nrn Rockies Tue aftn and night.  There will be some
moisture over the higher terrain nr the WY border late in the aftn
thru Tue evening.  There will be a quick shot of mid lvl ascent in
this areas as well so will keep in a chc of pcpn in the mtns nr the
WY border.  Over the rest of the area it will be dry with abv normal
temps as readings range fm the mid 80s to around 90 over nern CO.
Meanwhile a pacific fnt will move across the nern CO in the evening
so there will probably be a period of gusty winds with this feature.

On Wed dry WSW flow aloft will be over the area with no pcpn
expected.  Temps will not be as wrm across nern CO as highs will be
in the upper 70s to lower 80s.  For Thu an upper level trough will
intensify over the wrn US with increasing SSW flow across nrn CO.
Once again there will not be much moisture around so expect it
will be dry thru the aftn. Meanwhile temps will wrm back into the
mid 80s to around 90 across nern CO.

For Fri the upper level trough will move slowly eastward with stg
SSW flow aloft remaining over the area.  Both the ECMWF and GFS show
some moisture embedded in the flow and as a disturbance moves across
wrn CO this would lead to a chc of showers over the mtns.  Over nern
CO there is still quite a bit of uncertainly regarding whether a
fnt will move across the plains or not. With the main upper level
trough still centered to the west, my gut feeling is that it will
still reside to the north leading to another dry and warm day
across the plains.

By the weekend the upper level trough is fcst to slowly move across
the area as a cold front moves across nern CO on Sat.  This should
lead to an unsettled ptrn with much cooler temps.

&&

.AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon)
Issued at 1003 AM MDT Mon Sep 18 2017

Southwesterly winds this morning at KDEN still expected to switch
to southeasterly by 19-20z, then normal drainage patterns by 03Z
this evening. There will be no ceiling issues.

&&

.FIRE WEATHER...
Issued at 1003 AM MDT Mon Sep 18 2017

The fire danger will increase later today and again on Tuesday
due to above normal temperatures and increasing wind. The plan is
to upgrade the Fire Weather Watch to a Red Flag Warning for
the Front Range Foothills, Middle Park, South Park, the north
central mountains around Summit County, the Palmer Divide,
eastern Larimer and northwest Weld County from 1100-2000 mdt
Tuesday. In addition we will be including the adjacent plains
areas in a Fire Weather Watch for the same time. Highest
confidence will be in the warning area where warm temperatures, rh
values in the teens and gusty winds are expected. Not as
confident in the wind potential in the watch area but the other
critical factors are there which is why we have included those
zones in a Fire Weather Watch.

The elevated fire danger is possible Wednesday and Thursday as
well.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
Red Flag Warning 1100-2000 mdt Tuesday for
COZ212>216-238-241-246-247.
Fire Weather Watch 1100-2000 mdt Tuesday for
COZ239-240-242>245-249.
&&

UPDATE...Cooper
SHORT TERM...RJK
LONG TERM...RPK
AVIATION...Cooper
FIRE WEATHER...Cooper/Meier

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
450 AM MDT Mon Sep 18 2017

COZ030>051-191100-
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-
450 AM MDT Mon Sep 18 2017

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

.DAY ONE...Today and Tonight

Dry conditions will prevail across the forecast area today and
tonight. Temperatures will warm up to above seasonal normals
this afternoon. This will increase fire danger by this afternoon.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

It will be dry Tuesday through Thursday with above normal
temperatures which will lead to high fire danger. A weather system
may affect the area late Friday through the weekend bringing
cooler temperatures and a chance of precipitation.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.