M-1 Street Flooding Potential
by f2p2＠udfcd.org
Time: 922 AM Fri June 30, 2023
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: 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 600 PM
.
Prime time for flooding: Current
to 530 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorm will have the
potential to produce rainfall rates of 0.5-1.5" in 10-30 minutes. A
nearly stationary strong thunderstorm will have the potential to
produce up to 2.5" 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
X
Mountain locations subject to mud/rock/debris slide
------------------------------------------------------------------------------
Additional Information: Strong thunderstorms may also contain large
hail, gusty winds, frequent cloud-to-ground lightning and possibly and
isolated land spout/tornado.
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]
10 months, 2 weeks
M-1 Low Impact Flooding
by f2p2＠udfcd.org
Time: 628 PM Thu June 29, 2023
Forecaster: Justin Brooks
-------------------------
MESSAGE 1
Flash Flood Prediction Program
-------------------------
**** LOW IMPACT FLOODING ****
PRIORITY DISSEMINATION RECOMMENDED
We have determined that low impact flooding is likely in ADAMS COUNTY
(ALONG AND EAST OF HIGHWAY 85)
including:
------------------------------------------------------------------------------
from: Current
to 830 PM
.
Prime time for flooding: Current
to 800 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorms will have the
potential to produce rainfall rates of 0.4-1.2" in 10-30 minutes. A
nearly stationary strong thunderstorm
will have the potential to produce up to 2.4" of rain in 60-90
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 Adams 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]
10 months, 2 weeks
M-3 Flash Flood Warning
by f2p2＠udfcd.org
Time: 550 PM Thu June 29, 2023
Forecaster: Justin Brooks
-------------------------
MESSAGE 3
Flash Flood Prediction Program
-------------------------
FLASH FLOOD WARNING
PRIORITY DISSEMINATION RECOMMENDED
The National Weather Service has issued a FLASH FLOOD WARNING for
ADAMS COUNTY
including:
------------------------------------------------------------------------------
from: Current
to 845 PM
. THE NWS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 845PM FOR
EASTERN ADAMS COUNTY.
Prime time for flooding: Current
to 845 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorms will have the
potential to produce rainfall rates of 0.5-1.5" in 10-30 minutes. A
nearly stationary strong thunderstorm will have the potential to
produce up to 2.4" of rain in 60-90 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 explanation: Strong thunderstorms may also contain large
hail, gusty winds, and frequent cloud-to-ground lightning.
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]
10 months, 2 weeks
M-1 Low Impact Flooding
by f2p2＠udfcd.org
Time: 357 PM Thu June 29, 2023
Forecaster: Justin Brooks
-------------------------
MESSAGE 1
Flash Flood Prediction Program
-------------------------
**** LOW IMPACT FLOODING ****
PRIORITY DISSEMINATION RECOMMENDED
We have determined that low impact flooding is likely in the following
counties: ADAMS, ALL OF ADAMS
including:
------------------------------------------------------------------------------
from: Current
to 630 PM
.
Prime time for flooding: Current
to 600 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorms will have the
potential to produce rainfall rates of 0.4-1.2" in 10-30 minutes. A
nearly stationary strong thunderstorm will have the potential to
produce up to 2.4" of rain in 60-90 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 Adams 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]
10 months, 2 weeks
M-1 Street Flooding Potential
by f2p2＠udfcd.org
Time: 1147 AM Thu June 29, 2023
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: 100 PM
to 1159 PM
.
Prime time for flooding: 200 PM
to 1159 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorm will have the
potential to produce rainfall rates of 0.5-1.5" in 10-30 minutes. A
nearly stationary strong thunderstorm will have the potential to
produce up to 2.4" 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
X
Mountain locations subject to mud/rock/debris slide
------------------------------------------------------------------------------
Additional Information: Strong thunderstorms may also contain large
hail, gusty winds, frequent cloud-to-ground lightning and possibly an
isolated tornado or two.
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]
10 months, 2 weeks
M-2 Flash Flood Watch
by f2p2＠udfcd.org
Time: 1054 AM Thu June 22, 2023
Forecaster: Justin Brooks
-------------------------
MESSAGE 2
Flash Flood Prediction Program
-------------------------
FLOOD WATCH
The National Weather Service has issued a 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: 1200 PM
to 1159 PM
. THE NATIONAL WEATHER SERVICE IN BOULDER HAS ISSUED A FLOOD WATCH FOR
THE ENTIRE DISTRICT FROM 12:00 PM TODAY UNTIL 11:59 PM TONIGHT. THE
MESSAGE 2 MAY BE RESCINDED PRIOR TO 11:59 PM IF CONDITIONS WARRANT.
Prime time for flooding: 1200 PM
to 1100 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Typical thunderstorms have the potential to produce
moderate to heavy rainfall of 0.50” to 1.00” total, in 10-30
minutes. Strong thunderstorms have the potential to produce very heavy
rainfall of 1.00” to 1.50” total, in 10-30 minutes. Anchored or
slow-moving thunderstorms have the potential to produce 1.50” to
2.20” in 45 to 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
X
Mountain locations subject to mud/rock/debris slide
------------------------------------------------------------------------------
Additional information: Heavy rainfall may result in excessive runoff
and possibly flash flooding over the District this afternoon into the
late evening. Strong thunderstorms may also contain large hail, gusty
winds, frequent cloud-to-ground lightning and possibly an isolated
tornado.
A Flood Watch means that 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 F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
10 months, 3 weeks
M-1 Street Flooding Potential Update
by f2p2＠udfcd.org
Time: 129 AM Thu June 22, 2023
Forecaster: Justin Brooks
-------------------------
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, ADAMS, DENVER,
ARAPAHOE
including: DIA, THE CITY OF AURORA, ARVADA, WHEAT RIDGE, LAKEWOOD
------------------------------------------------------------------------------
from: Current
to 600 AM
.
Prime time for flooding: Current
to 500 AM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorm will have the
potential to produce rainfall rates of 0.4-1.2" in 10-30 minutes. A
nearly stationary strong thunderstorm will have the potential to
produce up to 2.4" of rain in 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
X
Mountain locations subject to mud/rock/debris slide
------------------------------------------------------------------------------
Additional Information: Strong thunderstorms may also contain large
hail, gusty winds, 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]
10 months, 3 weeks
M-1 Low Impact Flooding
by f2p2＠udfcd.org
Time: 1159 PM Wed June 21, 2023
Forecaster: Justin Brooks
-------------------------
MESSAGE 1
Flash Flood Prediction Program
-------------------------
**** LOW IMPACT FLOODING ****
PRIORITY DISSEMINATION RECOMMENDED
We have determined that low impact flooding is likely in the following
counties: ADAMS, ALL OF ADAMS
including:
------------------------------------------------------------------------------
from: Current
to 200 AM
.
Prime time for flooding: Current
to 200 AM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorms will have the
potential to produce rainfall rates of 0.5-1.5" in 10-30 minutes.
Higher amounts are possible should a storm linger for more than a 30
minute time frame with up to 2.5" in 45-75 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 Adams 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]
10 months, 3 weeks
M-3 Flash Flood Warning
by f2p2＠udfcd.org
Time: 1023 PM Wed June 21, 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 the
following counties: ADAMS, DENVER, ARAPAHOE
including: DIA, THE CITY OF AURORA
------------------------------------------------------------------------------
from: Current
to 115 AM
. NWS HAS ISSUED A FLASH FLOOD WARNING FOR ADAMS, ARAPAHOE AND DENVER
COUNTIES VALID UNTIL 1:15 AM THURSDAY. UP TO 2.0-2.5" OR MORE OF RAIN
HAS FALLEN ACROSS PORTIONS OF THE WARNED AREA AND AN ADDITIONAL
0.5-1.5" OF RAIN IS POSSIBLE WITH ISOLATED HIGHER AMOUNTS.
Prime time for flooding: Current
to 100 AM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorms will have the
potential to produce rainfall rates of 0.5-1.5" in 10-30 minutes.
Rainfall amounts may exceed 2.5" in 45-75 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 explanation: Training of thunderstorm cells has resulted in
long duration rainfall from thunderstorms and flash flooding is
imminent or already occurring over Adams, Arapahoe and Denver
Counties. The heaviest rainfall is concentrated over east Denver
County and along the Adams/Arapahoe County line, extending about 10-15
miles N and S of the Adams/Arapahoe County line. Thunderstorms also
include hail, and accumulating hail which may be impacting drainage
and exacerbating the flooding.
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]
10 months, 3 weeks
M-1 Low Impact Flooding
by f2p2＠udfcd.org
Time: 901 PM Wed June 21, 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 the following
counties: ADAMS, ALL OF ADAMS
including:
------------------------------------------------------------------------------
from: Current
to 1159 PM
.
Prime time for flooding: Current
to 1130 PM
.
------------------------------------------------------------------------------
Forecast rainfall: Moderate to strong thunderstorms will have the
potential to produce rainfall rates of 0.5-1.5" in 10-30 minutes.
Higher amounts are possible should a storm linger for more than a 30
minute time frame with up to 2.5" in 45-75 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 Adams 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]
10 months, 3 weeks