M-1 Street Flooding Potential
by f2p2＠udfcd.org
Time: 103 PM Wed May 31, 2023
Forecaster: Brad Simmons
-------------------------
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: 200 PM
to 900 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorms will have the
potential to produce rainfall rates of 0.3-0.8” in 10-30 minutes. A
slow moving strong thunderstorm or nearly stationary thunderstorm may
result in up to 1.5” of rain in 45-75 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
------------------------------------------------------------------------------
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 F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
11 months, 2 weeks
M-1 Street Flooding Potential Update
by f2p2＠udfcd.org
Time: 744 PM Sat May 27, 2023
Forecaster: Brad Simmons
-------------------------
MESSAGE 1 UPDATE
Flash Flood Prediction Program
-------------------------
STREET FLOODING POTENTIAL
We previously determined that street and small stream flooding is
possible in 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: Current
to 930 PM
.
Prime time for flooding: Current
to 900 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorms will have the
potential to produce rainfall rates of 0.3-0.8” in 10-30 minutes. A
slow moving strong thunderstorm or training of thunderstorm cells may
result in up to 1.5” of rain in 45-60 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
------------------------------------------------------------------------------
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 F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
11 months, 3 weeks
M-1 Street Flooding Potential
by f2p2＠udfcd.org
Time: 319 PM Sat May 27, 2023
Forecaster: Brad Simmons
-------------------------
MESSAGE 1
Flash Flood Prediction Program
-------------------------
STREET FLOODING POTENTIAL
We have determined that street and small stream flooding is possible
in the following counties: BOULDER (CITY OF BOULDER AFFECTED, FOUR
MILE BURN AREA AFFECTED), BROOMFIELD, ADAMS, DENVER, ARAPAHOE
including: DIA, THE CITY OF AURORA
------------------------------------------------------------------------------
from: Current
to 800 PM
.
Prime time for flooding: Current
to 700 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorms will have the
potential to produce rainfall rates of 0.3-0.9” in 10-30 minutes. A
slow moving strong thunderstorm or training of thunderstorm cells may
result in up to 1.5” of rain in 45-60 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
------------------------------------------------------------------------------
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 F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
11 months, 3 weeks
M-4 All Clear
by f2p2＠udfcd.org
Time: 544 PM Fri May 26, 2023
Forecaster: Brad Simmons
-------------------------
MESSAGE 4
Flash Flood Prediction Program
-------------------------
ALL CLEAR
The potential for flooding in 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 has
passed.
All earlier Messages are canceled.
We will keep you advised of any changes.
Please pass this information along to the organizations you previously
notified.
MHFD Flood Prediction Center: 303-458-0789 F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
11 months, 3 weeks
M-1 Low Impact Flooding
by f2p2＠udfcd.org
Time: 234 PM Fri May 26, 2023
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 NOT AFFECTED, FOUR MILE BURN AREA NOT
AFFECTED)
including:
------------------------------------------------------------------------------
from: Current
to 430 PM
.
Prime time for flooding: Current
to 400 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorms will have the
potential to produce 0.4-1.2" in 10-30 minutes. A slow moving
thunderstorm or a large thunderstorm may result in up to 1.8" in 45-60
minutes.
------------------------------------------------------------------------------
The most likely areas to be impacted by flooding are:
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
------------------------------------------------------------------------------
Additional Information: Excessive runoff is imminent or already
occurring in Boulder County. Storm is currently in the Superior area
moving N/NNE. 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 F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
11 months, 3 weeks
M-1 Street Flooding Potential
by f2p2＠udfcd.org
Time: 1209 PM Fri May 26, 2023
Forecaster: Brad Simmons
-------------------------
MESSAGE 1
Flash Flood Prediction Program
-------------------------
STREET FLOODING POTENTIAL
We have determined that street and small stream flooding is possible
in 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: 1230 PM
to 900 PM
.
Prime time for flooding: 130 PM
to 800 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorms will have the
potential to produce rainfall rates of 0.4-1.0” in 10-30 minutes. A
slow moving strong thunderstorm or training of thunderstorm cells may
result in up to 1.8” of rain in 45-60 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
------------------------------------------------------------------------------
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 F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
11 months, 3 weeks
M-1 Street Flooding Potential
by f2p2＠udfcd.org
Time: 216 PM Thu May 25, 2023
Forecaster: Brad Simmons
-------------------------
MESSAGE 1
Flash Flood Prediction Program
-------------------------
STREET FLOODING POTENTIAL
We have determined that street and small stream flooding is possible
in 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: 230 PM
to 930 PM
.
Prime time for flooding: 330 PM
to 830 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorms will have the
potential to produce rainfall rates of 0.4-1.0” in 10-30 minutes. A
slow moving strong thunderstorm or training of thunderstorm cells may
result in up to 1.8” of rain in 45-60 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
------------------------------------------------------------------------------
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 F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
11 months, 3 weeks
M-1 Low Impact Flooding
by f2p2＠udfcd.org
Time: 218 PM Wed May 24, 2023
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 NOT AFFECTED)
including:
------------------------------------------------------------------------------
from: Current
to 400 PM
.
Prime time for flooding: Current
to 330 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorms will have the
potential to produce 0.4-1.2" in 10-30 minutes. A slow moving
thunderstorm or a large thunderstorm may result in up to 2.0" in 45-60
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
------------------------------------------------------------------------------
Additional Information: Excessive runoff is imminent or already
occurring in Boulder County. 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 F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
11 months, 3 weeks
M-1 Street Flooding Potential
by f2p2＠udfcd.org
Time: 1147 AM Wed May 24, 2023
Forecaster: Brad Simmons
-------------------------
MESSAGE 1
Flash Flood Prediction Program
-------------------------
STREET FLOODING POTENTIAL
We have determined that street and small stream flooding is possible
in 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: 1200 PM
to 800 PM
.
Prime time for flooding: 100 PM
to 700 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Weak thunderstorms will produce rainfall rates of
0.2-0.5” of rain in 10-30 minutes. Moderate to strong thunderstorms
will have the potential to produce rainfall rates of 0.5-1.3” in
10-30 minutes. A slow moving strong thunderstorm or training of
thunderstorm cells may result in up to 2.0” of rain in 45-60
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
------------------------------------------------------------------------------
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 F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
11 months, 3 weeks
M-3 Flash Flood Warning
by f2p2＠udfcd.org
Time: 406 PM Thu May 18, 2023
Forecaster: Brad Simmons
-------------------------
MESSAGE 3
Flash Flood Prediction Program
-------------------------
FLASH FLOOD WARNING
PRIORITY DISSEMINATION RECOMMENDED
The National Weather Service has issued a FLASH FLOOD WARNING for
BOULDER COUNTY (CITY OF BOULDER NOT AFFECTED, FOUR MILE BURN AREA NOT
AFFECTED)
including:
------------------------------------------------------------------------------
from: Current
to 700 PM
. NWS HAS ISSUED A FLASH FLOOD WARNING FOR E/NE BOULDER COUNTY
ENCOMPASSING A SMALL AREA OF THE DISTRICT E OF THE CITY OF BOULDER BUT
DOES INCLUDE THE TOWN OF ERIE. UP TO 1" OR MORE OF RAIN HAS FALLEN
ACROSS PORTIONS OF THE WARNED AREA AND AN ADDITIONAL 0.5-1.5" IS
POSSIBLE.
Prime time for flooding: Current
to 530 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Heaviest rainfall is occurring north and northeast
of the City of Boulder over the Niwot and Erie areas. An additional
0.5-1.5" of rain is likely over the next 30-90 mins.
------------------------------------------------------------------------------
The most likely areas to be impacted by flooding are:
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
------------------------------------------------------------------------------
Additional explanation: Flash flooding is imminent or already
occurring.
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 F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
12 months