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Flash Flood Watch

Flood Watch
National Weather Service Denver CO
716 PM MDT Fri Jul 30 2021

COZ030>035-311215-
/O.CON.KBOU.FF.A.0007.000000T0000Z-210801T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
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-
Including the cities of North Park, Rocky Mountain National Park,
Mt Zirkel, Laramie and Medicine Bow Mountains, Red Feather Lakes,
Breckenridge, Williams Fork Mountains, Glendevey, Indian Peaks,
Nederland, Eisenhower Tunnel, Kremmling, East Slopes Southern
Gore Range, Mount Evans, Grand Lake, Cameron Pass, East Slopes
Mosquito Range, Berthoud Pass, Winter Park, Granby, Hot Sulphur
Springs, Kenosha Mountains, Gould, Willow Creek Pass, Spicer,
Rand, Estes Park, Dillon, Fraser, Walden, and Rabbit Ears Range
716 PM MDT Fri Jul 30 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY EVENING...

The Flash Flood Watch continues for

* Portions of central and north central Colorado, including the
  following areas, in central Colorado, Grand and Summit Counties
  Below 9000 Feet and South and Southeast Grand/West Central and
  Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park
  Counties Above 9000 Feet. In north central Colorado, 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 and West Jackson
  and West Grand Counties Above 9000 Feet.

* Through Saturday evening.

* Showers and thunderstorms will continue off and on through
  Saturday, and have potential to produce additional flash
  flooding.  The highest flash flood threat areas would be the
  Cameron Peak, East Troublesome, Williams Fork, and Calwood burn
  areas, but flash flooding will even be possible in non-burn scar
  areas due to the intensity of the rainfall.  Rainfall amounts
  around 1.5 inches will be possible in less than an hour, with
  storm total accumulations even higher.  While storms should
  gradually diminish overnight, there is still a threat of heavy
  rain continuing in the foothill areas overnight into early
  Saturday morning.  Additional rounds of showers and storms can be
  expected Saturday afternoon and evening.

* Burn scars will be particularly susceptible to heavy rainfall,
  leading to quick runoff and debris and mud flows. The flood threat
  may last through the night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Have multiple ways to receive warnings, including television,
weather radio, phone, family, and friends. Avoid burn areas in
particular, and be ready to move to higher ground.

&&

$$



Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1112 AM MDT Fri Jul 30 2021

COZ030>051-311715-
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-
1112 AM MDT Fri Jul 30 2021

...FLASH FLOOD WATCH FOR THE MOUNTAINS, FOOTHILLS, AND I-25 URBAN
CORRIDOR THROUGH SATURDAY EVENING...

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

.DAY ONE...This Afternoon and Tonight

There will be an elevated threat of flash flooding across the
mountains, foothills, and I-25 Urban Corridor. The main threat
this afternoon and early evening will be across the burn areas,
but may then shift to the rest of the foothills and portions of
the I-25 Urban Corridor overnight. Stronger storms will be capable
of producing 1-2 inches of rain in less than an hour, and there
may be repeated showers and storms into Saturday.

Avoid burn areas and flood prone areas this weekend. Have multiple
ways to receive a warning, including television, weather radio,
phone, internet, social media, and friends and family. Be ready to
take action and move to higher ground if you live in a flood
prone area, and never drive into flooded roads.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

The threat of flash flooding will be elevated on Saturday. A
cold front will push into the Front Range from the east coupled
with a surge of monsoon moisture over the region. The burn areas
in the mountains and foothills will be most susceptible to the
flooding impacts, however the I-25 Corridor and adjacent plains
may also see heavy rain and localized flooding.

The chance of showers and thunderstorms will decrease across the
plains and I-25 Corridor early next week, but there will still be
heavy rainfall possible along with the threat of flash flooding
in the burn areas.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight, but
rainfall reports or any reports of flooding would be greatly
appreciated.

$$



U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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