There are currently 11 Weather Alerts in Coloradoselect a different state
Flash Flood Warning issued July 20 at 9:46PM MDT until July 20 at 11:00PM MDT by NWS Grand Junction CO
Event: Flash Flood Warning
Message Type: Update
Urgency: Immediate
Severity: Severe
Certainty: Likely
Affected Area: Mesa, CO
Wheather Alert Summary: Ffwgjt
the national weather service in grand junction has extended the
* flash flood warning for...
the turner gulch burn scar in...
southwestern mesa county in west central colorado...
* until 1100 pm mdt.
* at 946 pm mdt, doppler radar indicated thunderstorms producing
heavy rain over the turner gulch burn scar. between 0.5 and 1 inch
of rain has fallen. flash flooding is ongoing or expected to begin
shortly.
excessive rainfall over the burn scar will result in debris flows.
the debris flow can consist of rock, mud, vegetation and other loose
materials.
hazard...Life threatening flash flooding. thunderstorms
producing flash flooding in and around the turner
gulch burn scar.
source...Radar.
impact...Life threatening flash flooding of areas in and around
the turner gulch burn scar.
* some locations that will experience flash flooding include...
mainly rural areas of southwestern mesa county
this includes the following streams and drainages...
bear creek, ute creek, maverick canyon, cow creek, gill creek,
west creek, north lobe creek and calamity creek.
Flash Flood Warning issued July 20 at 9:08PM MDT until July 21 at 12:00AM MDT by NWS Grand Junction CO
Event: Flash Flood Warning
Message Type: Alert
Urgency: Immediate
Severity: Severe
Certainty: Likely
Affected Area: Mesa, CO; Grand, UT
Wheather Alert Summary: Ffwgjt
the national weather service in grand junction has issued a
* flash flood warning for...
the snyder burn scar in...
west central mesa county in west central colorado...
eastern grand county in east central utah...
* until midnight mdt tonight.
* at 908 pm mdt, doppler radar indicated thunderstorms producing
heavy rain over the snyder burn scar. flash flooding is ongoing or
expected to begin shortly.
excessive rainfall over the burn scar will result in debris flows.
the debris flow can consist of rock, mud, vegetation and other loose
materials.
hazard...Life threatening flash flooding. thunderstorms
producing flash flooding in and around the snyder burn
scar.
source...Radar.
impact...Life threatening flash flooding of areas in and around
the snyder burn scar.
* some locations that will experience flash flooding include...
mainly rural areas of west central mesa and eastern grand counties
Flood Advisory issued July 20 at 9:04PM MDT until July 21 at 12:00AM MDT by NWS Grand Junction CO
Event: Flood Advisory
Message Type: Alert
Urgency: Expected
Severity: Minor
Certainty: Likely
Affected Area: Mesa, CO
Wheather Alert Summary: * what...Flooding caused by excessive rainfall is expected.
* where...A portion of west central colorado, including the
following county, mesa.
* when...Until midnight mdt tonight.
* impacts...Minor flooding in low-lying and poor drainage areas.
* additional details...
- at 902 pm mdt, doppler radar indicated heavy rain due to
thunderstorms. minor flooding is ongoing or expected to begin
shortly in the advisory area. between 0.8 and 1.2 inches of
rain have fallen.
- some locations that will experience flooding include...
fruita and redlands.
- http://www.Weather.Gov/safety/flood
Flash Flood Warning issued July 20 at 9:01PM MDT until July 21 at 12:00AM MDT by NWS Grand Junction CO
Event: Flash Flood Warning
Message Type: Alert
Urgency: Immediate
Severity: Severe
Certainty: Likely
Affected Area: Mesa, CO
Wheather Alert Summary: Ffwgjt
the national weather service in grand junction has issued a
* flash flood warning for...
western mesa county in west central colorado...
* until midnight mdt tonight.
* at 901 pm mdt, doppler radar indicated thunderstorms producing
heavy rain across the warned area. flash flooding is ongoing or
expected to begin shortly.
hazard...Life threatening flash flooding. thunderstorms
producing flash flooding.
source...Radar.
impact...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* some locations that will experience flash flooding include...
gateway and john brown creek
Flash Flood Warning issued July 20 at 8:45PM MDT until July 20 at 11:45PM MDT by NWS Grand Junction CO
Event: Flash Flood Warning
Message Type: Alert
Urgency: Immediate
Severity: Severe
Certainty: Likely
Affected Area: Montrose, CO; San Juan, UT
Wheather Alert Summary: Ffwgjt
the national weather service in grand junction has issued a
* flash flood warning for...
the deer creek burn scar in...
western montrose county in west central colorado...
northeastern san juan county in southeastern utah...
* until 1145 pm mdt.
* at 845 pm mdt, doppler radar indicated thunderstorms producing
heavy rain near the deer creek burn scar. between 0.5 and 1 inch
of rain has fallen. flash flooding is ongoing or expected to begin
shortly.
excessive rainfall over the burn scar will result in debris flows.
the debris flow can consist of rock, mud, vegetation and other loose
materials.
hazard...Life threatening flash flooding. thunderstorms
producing flash flooding in and around the deer creek
burn scar.
source...Radar.
impact...Life threatening flash flooding of areas in and around
the deer creek burn scar.
* some locations that will experience flash flooding include...
mainly rural areas of western montrose and northeastern san juan
counties
this includes the following streams and drainages...
ice lake creek, la sal creek, and west paradox creek.
Flash Flood Warning issued July 20 at 8:09PM MDT until July 20 at 11:15PM MDT by NWS Grand Junction CO
Event: Flash Flood Warning
Message Type: Alert
Urgency: Immediate
Severity: Severe
Certainty: Likely
Affected Area: Mesa, CO
Wheather Alert Summary: Ffwgjt
the national weather service in grand junction has issued a
* flash flood warning for...
central mesa county in west central colorado...
* until 1115 pm mdt.
* at 809 pm mdt, doppler radar indicated thunderstorms producing
heavy rain across the warned area. between 0.5 and 1 inch of rain
has fallen. flash flooding is ongoing or expected to begin shortly.
hazard...Life threatening flash flooding. thunderstorms
producing flash flooding.
source...Radar.
impact...Life threatening flash flooding of creeks and streams,
highways, and county roads.
* some locations that will experience flash flooding include...
mainly rural areas of central mesa county
this includes the following streams and drainages...
snyder creek, kannah creek, gunnison river, big dominguez creek,
deer creek, east creek, little dominguez creek and dry fork big
dominguez creek.
Flash Flood Warning issued July 20 at 8:04PM MDT until July 20 at 11:00PM MDT by NWS Grand Junction CO
Event: Flash Flood Warning
Message Type: Alert
Urgency: Immediate
Severity: Severe
Certainty: Likely
Affected Area: Rio Blanco, CO
Wheather Alert Summary: Ffwgjt
the national weather service in grand junction has issued a
* flash flood warning for...
the lee burn scar in...
central rio blanco county in northwestern colorado...
* until 1100 pm mdt.
* at 804 pm mdt, doppler radar indicated thunderstorms producing
heavy rain over the lee burn scar. flash flooding is ongoing or
expected to begin shortly.
excessive rainfall over the burn scar will result in debris flows.
the debris flow can consist of rock, mud, vegetation and other loose
materials.
hazard...Life threatening flash flooding. thunderstorms
producing flash flooding in and around the lee burn
scar.
source...Radar.
impact...Life threatening flash flooding of areas in and around
the lee burn scar.
* some locations that will experience flash flooding include...
mainly rural areas of central rio blanco county
Air Quality Alert issued July 20 at 4:10PM MDT by NWS Pueblo CO
Event: Air Quality Alert
Message Type: Alert
Urgency: Unknown
Severity: Unknown
Certainty: Unknown
Affected Area: Pueblo, CO; Custer, CO
Wheather Alert Summary: The colorado department of public health and environment has
issued the following...
what...Air quality health advisory for wildfire smoke.
where...Custer and southwestern pueblo counties. locations
include, but are not limited to westcliffe, rye, beulah, and
colorado city.
when...900 am monday july 20 to 900 am tuesday july 21
impacts...Moderate to heavy smoke from the aspen acres fire is
possible throughout the advisory area through at least tuesday
morning.
health information...Public health recommendations: increasing
likelihood of respiratory symptoms in sensitive individuals,
aggravation of heart or lung disease and premature mortality in
people with cardiopulmonary disease and older adults. people with
heart or lung disease, older adults, and children should reduce
prolonged or heavy exertion.
Air Quality Alert issued July 20 at 4:10PM MDT by NWS Denver CO
Event: Air Quality Alert
Message Type: Alert
Urgency: Unknown
Severity: Unknown
Certainty: Unknown
Affected Area: Douglas, CO; Broomfield, CO; Adams, CO; Larimer, CO; Boulder, CO; Arapahoe, CO; Jefferson, CO; Denver, CO; Weld, CO
Wheather Alert Summary: 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 july 20 to 400 pm tuesday july 21
impacts...Ozone action day alert is now in effect for the front
range urban corridor. hot and stagnant weather conditions will
result in ozone concentrations reaching the unhealthy for
sensitive groups category both monday and tuesday during the
afternoon and evening hours. for colorado air quality conditions,
forecasts, and advisories, visit:
https://www.Colorado.Gov/airquality/colorado_summary.Aspx if
possible, please help us reduce ozone pollution by limiting
driving gas and diesel-powered vehicles until at least 4 p.M.
tuesday, july 21, 2026. colorado is also addressing ozone
pollution through state policies. for more information about
health impacts and how ozone pollution forms in colorado, visit:
https://cdphe.Colorado.Gov/ozone- pollution-and-your-health
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.
Hydrologic Outlook issued July 20 at 10:32AM MDT by NWS Grand Junction CO
Event: Hydrologic Outlook
Message Type: Alert
Urgency: Future
Severity: Unknown
Certainty: Possible
Affected Area: Delta, CO; Dolores, CO; Garfield, CO; Gunnison, CO; Hinsdale, CO; Mesa, CO; Montrose, CO; Ouray, CO; San Miguel, CO; Grand, UT; San Juan, UT
Wheather Alert Summary: Esfgjt
anomalous moisture has become established across portions of
eastern utah and western colorado. scattered thunderstorms capable
of producing heavy rain are expected this afternoon and early
evening. rainfall rates of 1-2 inches per hour will be possible with
the stronger storms. these rates could lead to flash flooding and
debris flows especially over steep terrain and recent burn scars.
also, rain over the past several days has lead to saturated soils,
which increase the chances for excessive runoff.
as a reminder: keep an eye on our forecasts through the end of
the week and stay tuned for updated hydrology alerts if
visiting or if you reside below vulnerable terrain to flash
flooding and/or debris flows. storms across the west develop
quickly, leaving little room for lead time in flashy terrain.
Air Quality Alert issued July 20 at 9:10AM MDT by NWS Pueblo CO
Event: Air Quality Alert
Message Type: Alert
Urgency: Unknown
Severity: Unknown
Certainty: Unknown
Affected Area: Custer, CO; Pueblo, CO
Wheather Alert Summary: The colorado department of public health and environment has
issued the following...
what...Air quality health advisory for wildfire smoke.
where...Custer and southwestern pueblo counties. locations
include, but are not limited to westcliffe, rye, beulah, and
colorado city.
when...900 am monday july 20 to 900 am tuesday july 21
impacts...Moderate to heavy smoke from the aspen acres fire is
possible throughout the advisory area through at least tuesday
morning.
health information...Public health recommendations: increasing
likelihood of respiratory symptoms in sensitive individuals,
aggravation of heart or lung disease and premature mortality in
people with cardiopulmonary disease and older adults. people with
heart or lung disease, older adults, and children should reduce
prolonged or heavy exertion.