May 2023 - Message-broomfield

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]

1 year, 6 months

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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]

1 year, 7 months

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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]

1 year, 7 months

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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]

1 year, 7 months

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M-1 Low Impact Flooding

by f2p2＠udfcd.org

Time: 224 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 the following counties: ALL OF ADAMS, ADAMS, BROOMFIELD 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 2.0" 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 Broomfield County and Adams County (includes areas E and W of Hwy 85). Strong thunderstorms may also contain large hail, gusty winds and frequent cloud-to-ground lightning and possibly a very isolated 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]

1 year, 7 months

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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]

1 year, 7 months

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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]

1 year, 7 months

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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]

1 year, 7 months

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M-1 Street Flooding Potential

by f2p2＠udfcd.org

Time: 1058 AM Thu May 18, 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: 1130 AM to 900 PM . Prime time for flooding: 1230 PM to 800 PM . ------------------------------------------------------------------------------ Forecast rainfall: Rain showers and weak thunderstorms will produce 0.1-0.5” of rain. Moderate to strong thunderstorms will have the potential to produce rainfall rates of 0.5-1.5” in 10-30 minutes. A slower moving strong thunderstorm or a large thunderstorm complex 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 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 F2P2 Website [http://udfcd.org/Flash+Flood+Prediction+Program]

1 year, 7 months

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M-1 Street Flooding Potential

by f2p2＠udfcd.org

Time: 714 PM Tue May 16, 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: LAKEWOOD, WHEAT RIDGE, ARVADA, THE CITY OF AURORA, DIA ------------------------------------------------------------------------------ from: Current to 1000 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. Training of thunderstorm cells or a slower moving thunderstorm may result in up to 1.6" of rain in 60 minutes or less. ------------------------------------------------------------------------------ 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 F2P2 Website [http://udfcd.org/Flash+Flood+Prediction+Program]

1 year, 7 months

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Message-broomfield May 2023