Weather Alerts for Boulder, Broomfield & Jefferson Counties Below 6000 Feet

Issued by the National Weather Service

Red Flag Warning  RED FLAG WARNING   Red Flag Warning
BOULDER, BROOMFIELD & JEFFERSON COUNTIES BELOW 6000 FEET

Areas Affected:
Larimer and Boulder Counties Between 6000 and 9000 Feet
Effective: Sat, 10/24 12:00am Updated: Fri, 10/23 6:23pm Urgency: Expected
Expires: Sat, 10/24 7:00pm Severity:  Severe  Certainty: Likely

 
Details:
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM MDT
SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND
MOUNTAINS VALLEYS, FIRE WEATHER ZONES, 211, 212, 213, 214, 217,
AND 218...
...RED FLAG WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 7 PM MDT
SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN
FOOTHILLS, FIRE WEATHER ZONE 215...
Winds will begin to increase again this afternoon and especially
tonight and Saturday. Wind gusts will likely increase to around
40 mph in the valleys by Saturday, with gusts up to 60 mph or
more over the mountains and higher foothills. Relative humidities
will drop into the teens to lower 20s percent range today across
the mountains and valleys. Relative humidity slowly increases
overnight, but recoveries will be poor to moderate. The existing
fires burning in heavy fuels may lead to considerable additional
growth through Saturday.
...RED FLAG WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
7 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE
NORTHERN FOOTHILLS, FIRE WEATHER ZONE 215...
* Affected Area...Fire Weather Zone 215.
* Timing...Winds are expected to increase and slowly spread down
the foothills late tonight and Saturday.  Elevations above
7500-8000 feet should see the strongest winds.
* Winds...West 20 to 30 mph with gusts up to 50 mph.
* Relative Humidity...As low as 25 percent.
* Impacts...Ongoing drought conditions combined with strong
winds mean conditions are prime for rapid fire growth.

Information:
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.

Winter Storm Watch  WINTER STORM WATCH   Winter Storm Watch
BOULDER, BROOMFIELD & JEFFERSON COUNTIES BELOW 6000 FEET

Areas Affected:
Central and East Adams and Arapahoe Counties - Central and South Weld County - Elbert, Central and East Douglas Counties Above 6000 Feet - Logan County - Morgan County - North Douglas County Below 6000 Feet, Denver, West Adams and Arapahoe Counties, East Broomfield County - North and Northeast Elbert County Below 6000 Feet, North Lincoln County - Northeast Weld County - Phillips County - Sedgwick County - Washington County
Effective: Sun, 10/25 6:00am Updated: Fri, 10/23 6:23pm Urgency: Future
Expires: Mon, 10/26 6:00am Severity:  Moderate  Certainty: Possible

 
Details:
...WINTER SNOW AND COLD HEADED FOR COLORADO...
.A storm system will drop southward across colorado starting
Saturday night, with much colder temperatures and accumulating
snowfall. Snow will first develop over the northern border area
late Saturday evening, and then spread slowly southward into the
I-70 late Saturday night or Sunday morning. The heaviest snow is
expected to fall on Sunday, before tapering off Sunday night into
Monday morning.
Temperatures will be very cold, with highs only in the lower to
mid 20s on Sunday, and then single digit lows Sunday night.
The colder temperatures and snow will result in snow covered
roads, and slick travel conditions. If you are planning to travel,
be prepared for slower than normal travel conditions, and use
extra time to reach your destination safely.  Also, be prepared
for the sharp change in temperatures and dress warmly in several
layers of clothing.
...WINTER STORM WATCH IN EFFECT FROM SUNDAY MORNING THROUGH LATE
SUNDAY NIGHT...
* WHAT...Heavy snow possible. Total snow accumulations of 4 to 6
inches possible.
* WHERE...Most of east central and northeast Colorado along and
east of I-25.
* WHEN...From Sunday morning through late Sunday night.
* IMPACTS...Plan on slippery road conditions. If you are planning
travel, allow extra time to reach your destination safely.

Information:
Monitor the latest forecasts for updates on this situation.

Winter Storm Watch  WINTER STORM WATCH   Winter Storm Watch
BOULDER, BROOMFIELD & JEFFERSON COUNTIES BELOW 6000 FEET

Areas Affected:
Boulder And Jefferson Counties Below 6000 Feet, West Broomfield County - 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 - South and Southeast Grand, West Central and Southwest Boulder, Gilpin, Clear Creek, Summit, North and West Park Counties Above 9000 Feet
Effective: Sun, 10/25 6:00am Updated: Fri, 10/23 6:23pm Urgency: Future
Expires: Mon, 10/26 6:00am Severity:  Moderate  Certainty: Possible

 
Details:
...WINTER SNOW AND COLD HEADED FOR COLORADO...
.A storm system will drop southward across colorado starting
Saturday night, with much colder temperatures and accumulating
snowfall. Snow will first develop over the northern border area
late Saturday evening, and then spread slowly southward into the
I-70 late Saturday night or Sunday morning. The heaviest snow is
expected to fall on Sunday, before tapering off Sunday night into
Monday morning.
Temperatures will be very cold, with highs only in the lower to
mid 20s on Sunday, and then single digit lows Sunday night.
The colder temperatures and snow will result in snow covered
roads, and slick travel conditions. If you are planning to travel,
be prepared for slower than normal travel conditions, and use
extra time to reach your destination safely.  Also, be prepared
for the sharp change in temperatures and dress warmly in several
layers of clothing.
...WINTER STORM WATCH IN EFFECT FROM SUNDAY MORNING THROUGH LATE
SUNDAY NIGHT...
* WHAT...Heavy snow possible. Total snow accumulations of 6 to 12
inches possible in the mountains and foothills, with 5 to 10
inches possible in the Boulder to Fort Collins Corridor.
* WHERE...The Mountains of Summit County, the Mosquito Range,
and the Indian Peaks, The Southern Front Range Foothills,
South Park, Larimer County below 6000 feet and Northwest Weld
County and Boulder and the western suburbs of Denver.
* WHEN...From Sunday morning through late Sunday night.
* IMPACTS...Travel could be difficult. Allow extra time to reach
your destination safely.

Information:
Monitor the latest forecasts for updates on this situation.

Winter Storm Watch  WINTER STORM WATCH   Winter Storm Watch
BOULDER, BROOMFIELD & JEFFERSON COUNTIES BELOW 6000 FEET

Areas Affected:
Grand and Summit Counties Below 9000 Feet - Jackson County Below 9000 Feet - Larimer and Boulder Counties Between 6000 and 9000 Feet - South and East Jackson, Larimer, North and Northeast Grand, Northwest Boulder Counties Above 9000 Feet - West Jackson and West Grand Counties Above 9000 Feet
Effective: Sun, 10/25 12:00am Updated: Fri, 10/23 6:23pm Urgency: Future
Expires: Mon, 10/26 6:00am Severity:  Moderate  Certainty: Possible

 
Details:
...WINTER SNOW AND COLD HEADED FOR COLORADO...
.A storm system will drop southward across colorado starting
Saturday night, with much colder temperatures and accumulating
snowfall. Snow will first develop over the northern border area
late Saturday evening, and then spread slowly southward into the
I-70 late Saturday night or Sunday morning. The heaviest snow is
expected to fall on Sunday, before tapering off Sunday night into
Monday morning.
Temperatures will be very cold, with highs only in the lower to
mid 20s on Sunday, and then single digit lows Sunday night.
The colder temperatures and snow will result in snow covered
roads, and slick travel conditions. If you are planning to travel,
be prepared for slower than normal travel conditions, and use
extra time to reach your destination safely.  Also, be prepared
for the sharp change in temperatures and dress warmly in several
layers of clothing.
...WINTER STORM WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH
LATE SUNDAY NIGHT...
* WHAT...Heavy snow possible. Total snow accumulations of 8 to 14
inches possible.
* WHERE...North Park, East Slopes Park and Northern Gore Ranges,
Gore Pass, Rabbit Ears Pass, Grand and Summit Counties Below
9000 Feet, Rocky Mountain National Park and the Medicine Bow
Range and The Northern Front Range Foothills.
* WHEN...From late Saturday night through late Sunday night.
* IMPACTS...Travel could be very difficult. The dangerously cold
wind chills as low as 30 below zero could cause frostbite on
exposed skin in as little as 10 minutes.

Information:
Monitor the latest forecasts for updates on this situation.