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  • Flash Flood Warning Costilla, Colorado

    Start: 8/3/2020 4:36:00 PM
    End: 8/3/2020 7:00:00 PM
    COC023-055-040100- /O.CON.KPUB.FF.W.0055.000000T0000Z-200804T0100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Huerfano CO-Costilla CO- 436 PM MDT Mon Aug 3 2020 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM MDT FOR SOUTH CENTRAL HUERFANO AND NORTHEASTERN COSTILLA COUNTIES... At 435 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to one inch of rain has already fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Heavy rain producing flash flooding. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Excessive rainfall over the burn scar may result in debris flow moving through the Middle Creek and Indian Creek drainages. The debris flow can consist of rock, mud, vegetation and other loose materials. Some locations that will experience flooding include... Spring Burn Scar south of Highway 160 in Costilla county, Indian Creek on the southeastern Spring Burn Scar and Spring Burn Scar south of Highway 160 in Huerfano county. This includes the following areas, Sulphur Springs on Indian Creek, County Road 421 near Indian Creek, South Abeyta Creek near County Road 441, and North Abeyta Creek near Highway 160. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain alert for flooding even in locations not receiving rain. Arroyos, streams, and rivers can become raging killer currents in a matter of minutes, even from distant rainfall. Move away from recently burned areas. Life-threatening flooding of creeks, roads and normally dry arroyos is likely. The heavy rains will likely trigger rockslides, mudslides and debris flows in steep terrain, especially in and around these areas. LAT...LON 3756 10505 3741 10502 3740 10530 3754 10533 3758 10526 FLASH FLOOD...RADAR INDICATED FLASH FLOOD DAMAGE THREAT...CONSIDERABLE EXPECTED RAINFALL...0.50-1 INCHES IN 1 HOUR
  • Air Quality Alert Adams, Colorado

    Start: 8/3/2020 4:11:00 PM
    End: 8/4/2020 4:00:00 PM
    COC013-123-001-031-059-035-005-014-069-042200- Boulder-Weld-Adams-Denver-Jefferson-Douglas-Arapahoe- Broomfield-Larimer- 410 PM MDT Mon Aug 3 2020 ...OZONE ACTION DAY ALERT FROM 400 PM MONDAY UNTIL 400 PM TUESDAY... The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Monday August 03 to 400 PM Tuesday August 04 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Requests to limit driving of non-ZEV vehicles (i.e., gas or diesel) are now in effect until at least 4 p.m. Tuesday, August 4, 2020. Ozone concentrations will be in the Moderate to Unhealthy for Sensitive Groups range on Monday and Tuesday. Ozone concentrations in the Unhealthy for Sensitive Groups category will be most likely during the afternoon and evening hours in southern and western portions of the Denver metro area, including Highlands Ranch and Golden. For areas included in this advisory that are not expected to reach the Unhealthy for Sensitive Groups (USG) air quality designation, we request that activities, such as driving non-ZEV vehicles (i.e., gas or diesel), be reduced to lessen the impacts on neighboring air quality. Additional air pollution in this region may directly worsen air quality or contribute to precursors which may also adversely affect air quality. For Colorado air quality conditions, forecasts and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
  • Air Quality Alert Arapahoe, Colorado

    Start: 8/3/2020 4:11:00 PM
    End: 8/4/2020 4:00:00 PM
    COC013-123-001-031-059-035-005-014-069-042200- Boulder-Weld-Adams-Denver-Jefferson-Douglas-Arapahoe- Broomfield-Larimer- 410 PM MDT Mon Aug 3 2020 ...OZONE ACTION DAY ALERT FROM 400 PM MONDAY UNTIL 400 PM TUESDAY... The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Monday August 03 to 400 PM Tuesday August 04 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Requests to limit driving of non-ZEV vehicles (i.e., gas or diesel) are now in effect until at least 4 p.m. Tuesday, August 4, 2020. Ozone concentrations will be in the Moderate to Unhealthy for Sensitive Groups range on Monday and Tuesday. Ozone concentrations in the Unhealthy for Sensitive Groups category will be most likely during the afternoon and evening hours in southern and western portions of the Denver metro area, including Highlands Ranch and Golden. For areas included in this advisory that are not expected to reach the Unhealthy for Sensitive Groups (USG) air quality designation, we request that activities, such as driving non-ZEV vehicles (i.e., gas or diesel), be reduced to lessen the impacts on neighboring air quality. Additional air pollution in this region may directly worsen air quality or contribute to precursors which may also adversely affect air quality. For Colorado air quality conditions, forecasts and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
  • Air Quality Alert Boulder, Colorado

    Start: 8/3/2020 4:11:00 PM
    End: 8/4/2020 4:00:00 PM
    COC013-123-001-031-059-035-005-014-069-042200- Boulder-Weld-Adams-Denver-Jefferson-Douglas-Arapahoe- Broomfield-Larimer- 410 PM MDT Mon Aug 3 2020 ...OZONE ACTION DAY ALERT FROM 400 PM MONDAY UNTIL 400 PM TUESDAY... The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Monday August 03 to 400 PM Tuesday August 04 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Requests to limit driving of non-ZEV vehicles (i.e., gas or diesel) are now in effect until at least 4 p.m. Tuesday, August 4, 2020. Ozone concentrations will be in the Moderate to Unhealthy for Sensitive Groups range on Monday and Tuesday. Ozone concentrations in the Unhealthy for Sensitive Groups category will be most likely during the afternoon and evening hours in southern and western portions of the Denver metro area, including Highlands Ranch and Golden. For areas included in this advisory that are not expected to reach the Unhealthy for Sensitive Groups (USG) air quality designation, we request that activities, such as driving non-ZEV vehicles (i.e., gas or diesel), be reduced to lessen the impacts on neighboring air quality. Additional air pollution in this region may directly worsen air quality or contribute to precursors which may also adversely affect air quality. For Colorado air quality conditions, forecasts and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
  • Air Quality Alert Broomfield, Colorado

    Start: 8/3/2020 4:11:00 PM
    End: 8/4/2020 4:00:00 PM
    COC013-123-001-031-059-035-005-014-069-042200- Boulder-Weld-Adams-Denver-Jefferson-Douglas-Arapahoe- Broomfield-Larimer- 410 PM MDT Mon Aug 3 2020 ...OZONE ACTION DAY ALERT FROM 400 PM MONDAY UNTIL 400 PM TUESDAY... The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Monday August 03 to 400 PM Tuesday August 04 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Requests to limit driving of non-ZEV vehicles (i.e., gas or diesel) are now in effect until at least 4 p.m. Tuesday, August 4, 2020. Ozone concentrations will be in the Moderate to Unhealthy for Sensitive Groups range on Monday and Tuesday. Ozone concentrations in the Unhealthy for Sensitive Groups category will be most likely during the afternoon and evening hours in southern and western portions of the Denver metro area, including Highlands Ranch and Golden. For areas included in this advisory that are not expected to reach the Unhealthy for Sensitive Groups (USG) air quality designation, we request that activities, such as driving non-ZEV vehicles (i.e., gas or diesel), be reduced to lessen the impacts on neighboring air quality. Additional air pollution in this region may directly worsen air quality or contribute to precursors which may also adversely affect air quality. For Colorado air quality conditions, forecasts and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
  • Air Quality Alert Denver, Colorado

    Start: 8/3/2020 4:11:00 PM
    End: 8/4/2020 4:00:00 PM
    COC013-123-001-031-059-035-005-014-069-042200- Boulder-Weld-Adams-Denver-Jefferson-Douglas-Arapahoe- Broomfield-Larimer- 410 PM MDT Mon Aug 3 2020 ...OZONE ACTION DAY ALERT FROM 400 PM MONDAY UNTIL 400 PM TUESDAY... The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Monday August 03 to 400 PM Tuesday August 04 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Requests to limit driving of non-ZEV vehicles (i.e., gas or diesel) are now in effect until at least 4 p.m. Tuesday, August 4, 2020. Ozone concentrations will be in the Moderate to Unhealthy for Sensitive Groups range on Monday and Tuesday. Ozone concentrations in the Unhealthy for Sensitive Groups category will be most likely during the afternoon and evening hours in southern and western portions of the Denver metro area, including Highlands Ranch and Golden. For areas included in this advisory that are not expected to reach the Unhealthy for Sensitive Groups (USG) air quality designation, we request that activities, such as driving non-ZEV vehicles (i.e., gas or diesel), be reduced to lessen the impacts on neighboring air quality. Additional air pollution in this region may directly worsen air quality or contribute to precursors which may also adversely affect air quality. For Colorado air quality conditions, forecasts and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
  • Air Quality Alert Douglas, Colorado

    Start: 8/3/2020 4:11:00 PM
    End: 8/4/2020 4:00:00 PM
    COC013-123-001-031-059-035-005-014-069-042200- Boulder-Weld-Adams-Denver-Jefferson-Douglas-Arapahoe- Broomfield-Larimer- 410 PM MDT Mon Aug 3 2020 ...OZONE ACTION DAY ALERT FROM 400 PM MONDAY UNTIL 400 PM TUESDAY... The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Monday August 03 to 400 PM Tuesday August 04 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Requests to limit driving of non-ZEV vehicles (i.e., gas or diesel) are now in effect until at least 4 p.m. Tuesday, August 4, 2020. Ozone concentrations will be in the Moderate to Unhealthy for Sensitive Groups range on Monday and Tuesday. Ozone concentrations in the Unhealthy for Sensitive Groups category will be most likely during the afternoon and evening hours in southern and western portions of the Denver metro area, including Highlands Ranch and Golden. For areas included in this advisory that are not expected to reach the Unhealthy for Sensitive Groups (USG) air quality designation, we request that activities, such as driving non-ZEV vehicles (i.e., gas or diesel), be reduced to lessen the impacts on neighboring air quality. Additional air pollution in this region may directly worsen air quality or contribute to precursors which may also adversely affect air quality. For Colorado air quality conditions, forecasts and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
  • Air Quality Alert Jefferson, Colorado

    Start: 8/3/2020 4:11:00 PM
    End: 8/4/2020 4:00:00 PM
    COC013-123-001-031-059-035-005-014-069-042200- Boulder-Weld-Adams-Denver-Jefferson-Douglas-Arapahoe- Broomfield-Larimer- 410 PM MDT Mon Aug 3 2020 ...OZONE ACTION DAY ALERT FROM 400 PM MONDAY UNTIL 400 PM TUESDAY... The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Monday August 03 to 400 PM Tuesday August 04 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Requests to limit driving of non-ZEV vehicles (i.e., gas or diesel) are now in effect until at least 4 p.m. Tuesday, August 4, 2020. Ozone concentrations will be in the Moderate to Unhealthy for Sensitive Groups range on Monday and Tuesday. Ozone concentrations in the Unhealthy for Sensitive Groups category will be most likely during the afternoon and evening hours in southern and western portions of the Denver metro area, including Highlands Ranch and Golden. For areas included in this advisory that are not expected to reach the Unhealthy for Sensitive Groups (USG) air quality designation, we request that activities, such as driving non-ZEV vehicles (i.e., gas or diesel), be reduced to lessen the impacts on neighboring air quality. Additional air pollution in this region may directly worsen air quality or contribute to precursors which may also adversely affect air quality. For Colorado air quality conditions, forecasts and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
  • Air Quality Alert Larimer, Colorado

    Start: 8/3/2020 4:11:00 PM
    End: 8/4/2020 4:00:00 PM
    COC013-123-001-031-059-035-005-014-069-042200- Boulder-Weld-Adams-Denver-Jefferson-Douglas-Arapahoe- Broomfield-Larimer- 410 PM MDT Mon Aug 3 2020 ...OZONE ACTION DAY ALERT FROM 400 PM MONDAY UNTIL 400 PM TUESDAY... The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Monday August 03 to 400 PM Tuesday August 04 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Requests to limit driving of non-ZEV vehicles (i.e., gas or diesel) are now in effect until at least 4 p.m. Tuesday, August 4, 2020. Ozone concentrations will be in the Moderate to Unhealthy for Sensitive Groups range on Monday and Tuesday. Ozone concentrations in the Unhealthy for Sensitive Groups category will be most likely during the afternoon and evening hours in southern and western portions of the Denver metro area, including Highlands Ranch and Golden. For areas included in this advisory that are not expected to reach the Unhealthy for Sensitive Groups (USG) air quality designation, we request that activities, such as driving non-ZEV vehicles (i.e., gas or diesel), be reduced to lessen the impacts on neighboring air quality. Additional air pollution in this region may directly worsen air quality or contribute to precursors which may also adversely affect air quality. For Colorado air quality conditions, forecasts and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
  • Air Quality Alert Weld, Colorado

    Start: 8/3/2020 4:11:00 PM
    End: 8/4/2020 4:00:00 PM
    COC013-123-001-031-059-035-005-014-069-042200- Boulder-Weld-Adams-Denver-Jefferson-Douglas-Arapahoe- Broomfield-Larimer- 410 PM MDT Mon Aug 3 2020 ...OZONE ACTION DAY ALERT FROM 400 PM MONDAY UNTIL 400 PM TUESDAY... The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Monday August 03 to 400 PM Tuesday August 04 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Requests to limit driving of non-ZEV vehicles (i.e., gas or diesel) are now in effect until at least 4 p.m. Tuesday, August 4, 2020. Ozone concentrations will be in the Moderate to Unhealthy for Sensitive Groups range on Monday and Tuesday. Ozone concentrations in the Unhealthy for Sensitive Groups category will be most likely during the afternoon and evening hours in southern and western portions of the Denver metro area, including Highlands Ranch and Golden. For areas included in this advisory that are not expected to reach the Unhealthy for Sensitive Groups (USG) air quality designation, we request that activities, such as driving non-ZEV vehicles (i.e., gas or diesel), be reduced to lessen the impacts on neighboring air quality. Additional air pollution in this region may directly worsen air quality or contribute to precursors which may also adversely affect air quality. For Colorado air quality conditions, forecasts and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.