M-1 Low Impact Flooding
by f2p2＠udfcd.org
Time: 340 PM Thu July 1, 2021
Forecaster: Brad Simmons
-------------------------
MESSAGE 1
Flash Flood Prediction Program
-------------------------
LOW IMPACT FLOODING
PRIORITY DISSEMINATION RECOMMENDED
We have determined that low impact flooding is likely in BOULDER
COUNTY (CITY OF BOULDER AFFECTED, FOUR MILE BURN AREA AFFECTED)
including:
------------------------------------------------------------------------------
from: Current
to 630 PM
.
Prime time for flooding: Current
to 615 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Strong thunderstorms will have the potential to
produce 0.6-1.8" in 10-30 minutes. A large slow moving strong
thunderstorm may result in very heavy rainfall of up to 3.0" in 45-90
minutes. Should rain continue for longer than 90 minutes in duration
higher amounts are possible.
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The most likely areas to be impacted by flooding are:
X
Mountain streams & floodplains; road crossings; canyon roads &
highways; recreational trails; adjacent open space
areas/campgrounds/parks; fishing access points & stream reaches;
buildings near streams; utilities
X
Urban streams/gulches; road crossings; recreational trails; adjacent
open space areas/campgrounds/parks; floodplain properties; utilities
X
Urban streets, intersections, low lying areas, known trouble spots
X
Mountain locations subject to mud/rock/debris slide
------------------------------------------------------------------------------
Additional Information: Excessive runoff is imminent or already
occurring. The Message 2 remains in effect until midnight. Strong
thunderstorms may also contain large hail, gusty winds and frequent
cloud-to-ground lightning.
This message is not intended for public dissemination. Please pass
this information along to affected emergency response organizations
(police, fire, public works, etc.) within your area.
Also, please take appropriate actions to prepare for possible
flooding.
Further information will be provided to you as it becomes available.
MHFD Flood Prediction Center: 303-458-0789 Â Â Â F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
3 years, 4 months
M-2 Flash Flood Watch
by f2p2＠udfcd.org
Time: 904 AM Thu July 1, 2021
Forecaster: Brad Simmons
-------------------------
MESSAGE 2
Flash Flood Prediction Program
-------------------------
FLASH FLOOD WATCH
The National Weather Service has issued a FLASH FLOOD WATCH for: the
following counties: BOULDER (CITY OF BOULDER AFFECTED, FOUR MILE BURN
AREA AFFECTED), JEFFERSON, BROOMFIELD, DOUGLAS, ADAMS, DENVER,
ARAPAHOE
including: DIA, THE CITY OF AURORA, ARVADA, WHEAT RIDGE, LAKEWOOD
------------------------------------------------------------------------------
from: 1100 AM
to 1159 PM
. THE NATIONAL WEATHER SERVICE IN BOULDER HAS ISSUED A FLASH FLOOD
WATCH FOR ALL AREAS OF THE DISTRICT AND IS VALID FROM 11AM TO
MIDNIGHT.
Prime time for flooding: 100 PM
to 900 PM
.
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Forecast rainfall: Thunderstorms will have the potential to produce
rainfall rates of 0.6-1.8" in 10-30 minutes. Training of thunderstorm
cells or a large slow moving strong thunderstorm may result in very
heavy rainfall of up to 4.0" in 60-90 minutes. Should rain continue
for longer than 90 minutes in duration higher amounts are possible.
------------------------------------------------------------------------------
The most likely areas to be impacted by flooding are:
X
Mountain streams & floodplains; road crossings; canyon roads &
highways; recreational trails; adjacent open space
areas/campgrounds/parks; fishing access points & stream reaches;
buildings near streams; utilities
X
Urban streams/gulches; road crossings; recreational trails; adjacent
open space areas/campgrounds/parks; floodplain properties; utilities
X
Urban streets, intersections, low lying areas, known trouble spots
X
Mountain locations subject to mud/rock/debris slide
------------------------------------------------------------------------------
Additional information: Strong thunderstorms may anchor briefly and
multiple thunderstorms will have the potential to train over the same
area this afternoon and evening which may result in extended periods
of heavy rainfall and flash flooding.
A Flash Flood Watch means that flash flooding is possible within the
watch area.
This message is not intended for public dissemination. Please pass
this information along to affected emergency response organizations
(police, fire, public works, etc.) within your area.
Also, please take appropriate actions to prepare for possible
flooding.
Further information will be provided to you as it becomes available.
MHFD Flood Prediction Center: 303-458-0789 Â Â Â F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
3 years, 4 months
M-1 Street Flooding Potential
by f2p2＠udfcd.org
Time: 730 PM Wed June 30, 2021
Forecaster: Justin Brooks
-------------------------
MESSAGE 1
Flash Flood Prediction Program
-------------------------
STREET FLOODING POTENTIAL
We have determined that street and small stream flooding is possible
in the following counties: ARAPAHOE, DENVER, ADAMS, DOUGLAS,
BROOMFIELD, JEFFERSON, BOULDER (CITY OF BOULDER AFFECTED, FOUR MILE
BURN AREA AFFECTED)
including: DIA, THE CITY OF AURORA, ARVADA, WHEAT RIDGE, LAKEWOOD
------------------------------------------------------------------------------
from: Current
to 1000 PM
.
Prime time for flooding: Current
to 930 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Weak to moderate thunderstorms will produce
0.3-0.9" in 10-30 minutes. Strong thunderstorms will have the
potential to produce 0.4-1.6" in 15-45 minutes. A stationary strong
thunderstorm may result in up to 2.5" of rain in 60-90 minutes.
------------------------------------------------------------------------------
The most likely areas to be impacted by flooding are:
X
Mountain streams & floodplains; road crossings; canyon roads &
highways; recreational trails; adjacent open space
areas/campgrounds/parks; fishing access points & stream reaches;
buildings near streams; utilities
X
Urban streams/gulches; road crossings; recreational trails; adjacent
open space areas/campgrounds/parks; floodplain properties; utilities
X
Urban streets, intersections, low lying areas, known trouble spots
X
Mountain locations subject to mud/rock/debris slide
------------------------------------------------------------------------------
Additional Information: Strong thunderstorms may also contain large
hail, gusty winds and frequent cloud-to-ground lightning.
This message is not intended for public dissemination. Please pass
this information along to affected emergency response organizations
(police, fire, public works, etc.) within your area.
Also, please take appropriate actions to prepare for possible
flooding.
Further information will be provided to you as it becomes available.
MHFD Flood Prediction Center: 303-458-0789 Â Â Â F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
3 years, 4 months