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2 products issued by NWS for: 2 Miles NNW Aurora CO
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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1115 AM MDT Thu Apr 19 2018

COZ030>051-201715-
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-
1115 AM MDT Thu Apr 19 2018

...Red Flag Warnings 11 am this morning until 8 pm mdt this
evening, Denver Metro area, Palmer Divide, South Park, southern
Foothills and parts of the northeast and east central Plains...

...Winter Storm Watch in effect Friday afternoon through Saturday
morning for the Front Range Mountains and Foothills...

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

.DAY ONE...This Afternoon and Tonight

Strong south winds will develop over the plains today ahead of an
approaching storm system. Gusts of 30 to 40 mph will be common by
midday, with gusts to 50 mph possible. The winds will combine with
low humidities to produce very high fire danger from southeastern
Colorado north to Denver, Greeley, and Fort Morgan. While
humidities will improve this evening, the strong winds will
continue overnight. Scattered rain and snow showers will develop
in the mountains overnight, with some higher mountain areas
receiving a couple inches of snow by morning.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A spring storm will move out of Utah and across Colorado Friday
into Saturday. As a result, widespread precipitation is expected
through Saturday morning. Snow, heavy at times will be possible in
the Front Range Mountains and Foothills. Storm totals in those
areas may range from 8 to 12 inches with some areas seeing up to
18 inches by Saturday afternoon, with lesser amounts expected
over the Palmer Divide. Elsewhere across the northeast plains,
rain turning over to a mix of rain and snow then possibly to a
wet snow by late Friday will continue through Saturday morning. At
this time some light accumulation is possible, mostly on grassy
surfaces.

The storm system will exit the region by Saturday afternoon,
followed by a warmer and drier pattern for Sunday and Monday. The
next chance of precipitation for the region will be on Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$



Red Flag Warning

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
409 AM MDT Thu Apr 19 2018

...VERY HIGH FIRE DANGER THIS AFTERNOON OVER PORTIONS OF THE
EASTERN COLORADO PLAINS...

.Strong south to southeast winds will develop this morning across
eastern Colorado. By afternoon, wind gusts of 30 to 40 mph will
be common, with a few gusts as high as 50 mph possible. The winds
will combine with humidities of 10-20% in areas near the mountains
to produce very high to extreme fire danger. The winds will be a
lighter in areas west of I-25 until late in the afternoon, so
those areas will have their highest fire danger around sunset.
Closer to the eastern border it will be windy but humidities will
be higher. Cooler temperatures will bring higher humidities this
evening, but strong winds will continue overnight and could
produce dangerous fire behavior on any fires that are burning.

COZ214-216-240-241-245>247-191815-
/O.EXT.KBOU.FW.W.0019.180419T1700Z-180420T0200Z/
Central and Southeast Park County-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
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-
409 AM MDT Thu Apr 19 2018

...RED FLAG WARNING NOW IN EFFECT FROM 11 AM THIS MORNING TO 8 PM
MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTH
PARK...SOUTHERN FRONT RANGE FOOTHILLS...PALMER DIVIDE...DENVER...
AND ADJACENT PLAINS EASTWARD THROUGH LINCOLN COUNTY...

* Affected Area...Fire Weather Zones 214...216...240...241...
  245...246 and 247.

* Timing...Strong winds and low humidities will develop this
  morning. The humidities will improve this evening, but it will
  remain windy overnight.

* Winds...South 25 to 35 mph with gusts up to 45 mph.

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

* Impacts...Conditions will be favorable for new fire starts and
  rapid wildfire growth.

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.

&&

$$

Gimmestad



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NOAA National Weather Service
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Silver Spring, MD 20910
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Page last modified: May 16, 2007
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