Red Flag Warning 52, NWS Denver/Boulder, CO

123 
WWUS85 KBOU 011840
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
1240 PM MDT Wed Jul 1 2026

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED FOR SOUTH PARK, THE
SOUTHERN FOOTHILLS, AND THE PALMER DIVIDE TODAY...POTENTIALLY
CONTINUING THROUGH FRIDAY...

COZ214-020230-
/O.NEW.KBOU.FW.W.0053.260702T1800Z-260703T0200Z/
/O.CON.KBOU.FW.W.0052.000000T0000Z-260702T0200Z/
Central and Southeast Park County-
1240 PM MDT Wed Jul 1 2026

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTH PARK, THE SOUTHERN 
FOOTHILLS, AND THE PALMER DIVIDE...

...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT THURSDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR SOUTH PARK...

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 8 PM MDT Thursday.

* AFFECTED AREA...Fire Weather Zone 214.

* TIMING...For the first Red Flag Warning, until 8 PM MDT this 
  evening. For the second Red Flag Warning, from noon to 8 PM 
  MDT Thursday.

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

* RELATIVE HUMIDITY...As low as 7 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.

&&

$$

COZ216-241-020200-
/O.CON.KBOU.FW.W.0052.000000T0000Z-260702T0200Z/
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Elbert/Central and East Douglas Counties Above 6000 Feet-
1240 PM MDT Wed Jul 1 2026

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTH PARK, THE SOUTHERN 
FOOTHILLS, AND THE PALMER DIVIDE...

* AFFECTED AREA...Fire Weather Zones 216 and 241.

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

* WINDS...South 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 8 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.

&&

$$

414 
WWUS85 KBOU 020111
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
711 PM MDT Wed Jul 1 2026

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED FOR SOUTH PARK, THE
SOUTHERN FOOTHILLS, AND THE PALMER DIVIDE THURSDAY AND 
POTENTIALLY CONTINUING THROUGH FRIDAY...

COZ214-020915-
/O.CAN.KBOU.FW.W.0052.000000T0000Z-260702T0200Z/
/O.CON.KBOU.FW.W.0053.260702T1800Z-260703T0200Z/
Central and Southeast Park County-
711 PM MDT Wed Jul 1 2026

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT
THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTH PARK, THE
SOUTHERN FOOTHILLS, AND THE PALMER DIVIDE...
...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE
HUMIDITY FOR SOUTH PARK, THE SOUTHERN FOOTHILLS, AND THE PALMER
DIVIDE...

The National Weather Service in Denver has cancelled the Red Flag
Warning.

* AFFECTED AREA...Fire Weather Zone 214.

* TIMING...From noon to 8 PM MDT Thursday.

* WINDS...West 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 7 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.

&&

$$

COZ216-241-020215-
/O.CAN.KBOU.FW.W.0052.000000T0000Z-260702T0200Z/
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Elbert/Central and East Douglas Counties Above 6000 Feet-
711 PM MDT Wed Jul 1 2026

...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE
HUMIDITY FOR SOUTH PARK, THE SOUTHERN FOOTHILLS, AND THE PALMER
DIVIDE...

The National Weather Service in Denver has cancelled the Red Flag
Warning.

Surface observations over the past hour has shown improvement in
relative humidity values, with winds decreasing to generally below
20 mph. However, localized elevated to critical fire weather
conditions may persist for the next hour. 

$$

Area Forecast Discussion
National Weather Service Denver/Boulder CO
1138 PM MDT Tue Jun 30 2026

.KEY MESSAGES...

- Critical fire weather conditions will be present in the high
  country today due to warm, dry and windy conditions.

- A couple strong storms possible across far northeastern Colorado
  late this afternoon/evening.

- Mainly dry Wednesday through Friday with elevated to critical
  fire conditions across much of the area.

&&

.DISCUSSION /Through Tuesday/...
Issued at 248 PM MDT Tue Jun 30 2026

It is sunny, dry, and breezy across much of Colorado this afternoon.
A shortwave currently sitting over Utah will continue to track
northeast into northern Colorado and Wyoming, and flow aloft is now
SSW. At the surface, strong southeasterly flow is advecting
dewpoints in the low 40s into north central Colorado as far west as
the I-25 corridor. Current satellite imagery shows cumulus cloud
coverage already increasing over the foothills. With DCAPE values in
the 1000-1500 J/kg range, virga showers are still on track to
develop this afternoon. Wind gusts up to 50-55 mph will be
possible with the outflows of the strongest dry microbursts. High-
res model guidance initially favors the northern I-25 corridor for
the development of high-based showers between 4pm and 6pm. The
far northeast plains of Colorado will have a better chance to see
a strong thunderstorm as high-based showers move into an
environment with higher precipitable water (PW ~1.00") and MLCAPE
in the early evening. Another shortwave will graze northern
Colorado tomorrow afternoon bringing a chance (20%-30%) for a few
high based showers over our northeast CWA, although the moisture
content of the airmass in place will be much lower than today's
(PWs <0.50").

A longwave ridge over the eastern half of the U.S. will continue
to block the synoptic pattern through at least the end of this
week when flow is expected to become more zonal. Winds aloft
remain SSW/SW tomorrow and Thursday, becoming weaker as the week
progresses. While there is no strong signal for a pattern change
over the next couple days, a weak disturbance appears to arrive
late Friday into Saturday. Model guidance suggests a lee cyclone
developing over eastern Colorado Saturday afternoon, aiding the
transport of enough Gulf moisture for at least a few isolated
showers over the northeast Colorado plains. Uncertainty remains
regarding thunderstorm chances for the weekend at this time. Dry
conditions return by early next week with slightly above average
temperatures.

&&

.AVIATION /06Z TAFS through 06Z Thursday/...
Issued at 1128 PM MDT Tue Jun 30 2026

Light easterly winds will eventually turn northwesterly and then
to drainage overnight tonight. Any potential showers in the
vicinity will not impact operations. There is a very low (5%
chance) that fog or low clouds impact DEN in the morning. Any fog
and low clouds are expected to stay well east of DEN.

Wind speed and direction will be difficult to forecast during the
late morning and afternoon tomorrow. This is because a DCVZ will
likely setup over the southeast Denver metro. DEN usually ends up
having moderate easterly winds for much of the day in these
scenarios with winds turning more northeast in the late afternoon
and northwest in the evening. It appears the DCVZ will setup right
near APA. APA could see southeast or east winds tomorrow if the
boundary is to the north, however, they would see northwest winds
if the boundary is to the south. Otherwise, there is a small
chance (20%) that virga showers develop over the terminals late
tomorrow afternoon. It is possible variable gusty winds develop
from those virga showers. Additionally, smoke may impact
operations during the late afternoon and evening as fires across
the southwest US strengthen in the afternoon.

Winds will slowly turn to drainage Wednesday night.

&&

.FIRE WEATHER...
Issued at 248 PM MDT Tue Jun 30 2026

Critical fire weather conditions are possible over the high terrain
this afternoon with winds gusting up to 30 mph and humidities in the
teens. Elevated fire weather conditions are also occurring over
the Palmer Divide this afternoon with winds gusting as high as 40
mph, although humidities have remained in the 20%-30% range due to
the strong southeasterly flow in place.

Winds will become weaker tomorrow, just below the threshold for Red
Flag issuance. However, brief periods of gusty winds up to 30 mph as
well as humidities in the low teens will create elevated fire
weather conditions and spotty critical conditions in some areas. The
Palmer Divide will likely be closest to meeting critical fire
weather criteria due to the development of a Denver cyclone in the
vicinity, which could strengthen wind gusts (up to 35 mph) for at
least a brief period of time.

For Thursday and Friday, winds will be generally light (< 20 mph)
although humidities will drop into the single digits each afternoon,
particularly over the high terrain. Therefore, widespread elevated
fire weather conditions are expected through the foreseeable future,
with localized areas of critical fire conditions over the mountains
Friday afternoon.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
Fire Weather Watch from Wednesday afternoon through Wednesday
evening for COZ212-214-216-241.

&&

DISCUSSION...AA
AVIATION...Danielson
FIRE WEATHER...AA

Preliminary Local Storm Report
National Weather Service Denver CO
908 PM MDT Tue Jun 30 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0754 PM     Tstm Wnd Gst     3 NW Iliff              40.80N 103.10W
06/30/2026  M74 MPH          Logan              CO   Public

            Ambient Weather Station.

&&

MV

Preliminary Local Storm Report
National Weather Service Denver CO
915 PM MDT Tue Jun 30 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0745 PM     Tstm Wnd Dmg     North Sterling Reservoi 40.79N 103.26W
06/30/2026                   Logan              CO   Mesonet

            Corrects previous non-tstm wnd gst report
            from North Sterling Reservoir. Mesonet
            station TT562 North Sterling.

&&

MV

Preliminary Local Storm Report
National Weather Service Denver CO
918 PM MDT Tue Jun 30 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0904 PM     Tstm Wnd Gst     2 NNE Ovid              40.99N 102.36W
06/30/2026  M72 MPH          Sedgwick           CO   Public

            UPR.

&&

MV

Preliminary Local Storm Report
National Weather Service Denver CO
932 PM MDT Tue Jun 30 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0746 PM     Tornado          5 E Sterling            40.64N 103.13W
06/30/2026                   Logan              CO   Public

            Tornado reported 1 mile north of US 6.

&&

MV

Preliminary Local Storm Report
National Weather Service Denver CO
934 PM MDT Tue Jun 30 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0809 PM     Tstm Wnd Gst     4 SW Fleming            40.64N 102.89W
06/30/2026  M67 MPH          Logan              CO   Public

            Ambient Weather Station.

&&

MV

Preliminary Local Storm Report
National Weather Service Denver CO
942 PM MDT Tue Jun 30 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0740 PM     Tornado          2 E North Sterling Rese 40.78N 103.23W
06/30/2026                   Logan              CO   Public

&&

MV