|Lafayette, CO 80026
|Warning Date: 7:00 PM MDT on September 12, 2013
|Warning Description: Flash Flood Warning, Areal Flood Warning
| Weather Map
|Normal Rain, month
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Local Weather Exchange®
Full Advisory Text
Warning Description: Flash Flood Warning, Areal Flood Warning
Warning Date: 7:00 PM MDT on September 12, 2013
Warning Message:The National Weather Service in Denver has extended the
* Flash Flood Warning for...
northwestern Jefferson County in northeast Colorado...
Boulder County in northeast Colorado...
* until 1130 PM MDT
* at 655 PM MDT...Doppler radar and automated rain gauges indicated
that heavy rain was falling over the area. Between 1 and 2 inches
of rain has fallen in the last 3 hours...with an additional one
half to 1.5 inches of rain in the next 3 hours with just a slight
decrease in rain intensity. However...this additional rain will
fall on top of the 6 to 14 inches of rain that has already fallen.
Life threatening flash flooding will continue.
* Some locations that will experience flooding include...
northwestern Arvada...western Westminster...Boulder...western
Flats...Raymond...sunshine...white ranch open space and Allenspark.
This is a life threatening situation...including people along
Boulder Creek in the city of Boulder...in the Fourmile burn
area...in Boulder Canyon....Lefthand Canyon...and St vrain canyon
through the town of Lyons...and along south Boulder Creek through
Eldorado Springs. Heavy rainfall will cause extensive and severe
flash flooding of creeks and streams from the Fourmile burn area
downstream through the city of Boulder. Numerous roads and bridges
have been washed out.
Some drainage basins impacted include Boulder Creek...Fourmile
creek...Gold Run...Fourmile Canyon creek...Wonderland
creek...south Boulder Creek...lefthand creek...and the St vrain.
Severe debris flows and rock slides can also be anticipated across
roads. Roadways and bridges will be washed away in places. Numerous
roads are closed and travel is not recommended. If you encounter
flood waters...climb to safety.
Turn around...dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Lat...Lon 4026 10518 4008 10509 3993 10515 3990 10514
3991 10516 3988 10515 3981 10517 3974 10530
3989 10541 3993 10540 3994 10544 3997 10546
526 PM MDT Thu Sep 12 2013
...A Flood Warning remains in effect until 830 PM MDT Thursday for
northwestern Arapahoe...western Weld...northern Jefferson...
Larimer...western Adams...Broomfield...Denver and Boulder counties...
Rain...very heavy at times...will continue through this evening.
Rainfall totals have totaled 3 to 8 inches in many areas...with
between 8 and 14 inches over the least 3 days in the foothills of
Boulder County into the city of Boulder...as well as in the Aurora
area. Additional rainfall of 1 to locally 4 inches or more will keep
severe flooding continuing in most areas.
Nearly all ditches...canals...streams...rivers...ponds...and low
lyings areas are full of water and many of them are flooding...some
Some locations that will experience flooding include...
Denver...Fort Collins...western Greeley...northwestern Aurora...
Village...Superior...Federal Heights...Firestone...western Denver
International Airport and Johnstown.
Most flood deaths occur in automobiles. Never drive your vehicle into
areas where the water covers the roadway. Flood waters are usually
deeper than they appear. Just one foot of flowing water is powerful
enough to sweep vehicles off the Road. When encountering flooded
roads make the smart choice...turn around...dont drown.
Do not drive your vehicle into areas where the water covers the
roadway. The water depth may be too great to allow your car to cross
safely. Move to higher ground.
Lat...Lon 4100 10480 3961 10470 3960 10518 4100 10616
1204 PM MDT Thu Sep 12 2013
The National Weather Service in Denver has issued a
* Flood Warning for
the Boulder Creek at Boulder.
* Until further notice.
* At 11:45 am Thursday the stage was 5.7 feet.
* Flood stage is 5.5 feet.
* Flood history...this crest compares to a previous crest of 4.3 feet
on Jul 13 2011.
WarningDesc:Flash Flood Watch
WarningDate:9:58 am MDT on September 12, 2013
WarningSum:...Flash Flood Watch Now In Effect Through Late Tonight...
Warning Message:The Flash Flood Watch is now in effect for
* portions of central Colorado...north central Colorado and
northeast Colorado...including the following areas...in
central Colorado...Jefferson and west Douglas counties above
6000 feet/Gilpin/Clear Creek/Northeast Park counties below
9000 feet. In north central Colorado...Larimer County below
6000 feet/northwest Weld County and Larimer and Boulder
counties between 6000 and 9000 feet. In northeast Colorado...
Boulder and Jefferson counties below 6000 feet/west Broomfield
County...Elbert/central and East Douglas counties above 6000
feet and north Douglas County below 6000 feet/Denver/west
Adams and Arapahoe counties/east Broomfield County.
* Through late tonight
* periods of heavy rainfall on already saturated soils will result
in further flash flooding for portions of the Front Range
foothills and adjacent plains.
* Heaviest rainfall is expected this afternoon and evening...
although periods of heavy rainfall along the Front Range this
morning may lead to flash flooding.
A Flash Flood Watch means that conditions may develop that lead
to flash flooding and serious debris flows. Flash flooding is a
very dangerous situation.
You should monitor later forecasts and be prepared to take action
should flash flood warnings be issued.
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