Station Name: ARKANSAS RIVER AT PORTLAND, CO.
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 5,043 feet

Nearest Address:
State Hwy 120
Portland, CO 81226
Fremont County

GPS Coordinates: 38.38833418, -105.0160961

Nearby Water Temperatures

Red Flag Warning issued April 21 at 12:11AM MDT until April 23 at 12:00AM MDT by NWS Pueblo CO

Effective: Tue April 21, 2026, 12:11 AM
Expires: Tue April 21, 2026, 4:15 PM

* AFFECTED AREA...Fire Weather Zones 221, 222, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236 and 237. * TIMING...For the Red Flag Warning, from 10 AM Wednesday to midnight MDT Wednesday night. For the Fire Weather Watch, from Thursday morning through Thursday evening. * WINDS...West 25 to 35 mph with gusts up to 60 mph. The windiest conditions will occur on Wednesday. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Extreme fire danger is expected. Fires will uncontrollably spread and be very destructive.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.

Fire Weather Watch issued April 21 at 12:11AM MDT until April 23 at 9:00PM MDT by NWS Pueblo CO

Effective: Tue April 21, 2026, 12:11 AM
Expires: Tue April 21, 2026, 4:15 PM

* AFFECTED AREA...Fire Weather Zones 221, 222, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236 and 237. * TIMING...For the Red Flag Warning, from 10 AM Wednesday to midnight MDT Wednesday night. For the Fire Weather Watch, from Thursday morning through Thursday evening. * WINDS...West 25 to 35 mph with gusts up to 60 mph. The windiest conditions will occur on Wednesday. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Extreme fire danger is expected. Fires will uncontrollably spread and be very destructive.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.

Red Flag Warning issued April 21 at 11:26AM MDT until April 23 at 12:00AM MDT by NWS Pueblo CO

Effective: Tue April 21, 2026, 11:26 AM
Expires: Wed April 22, 2026, 3:30 AM

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO MIDNIGHT MDT WEDNESDAY NIGHT FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 221, 222, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, AND 237... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 221, 222, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, AND 237... * THIS IS A PARTICULARLY DANGEROUS SITUATION FOR ZONES 224 AND 225 * AFFECTED AREA...Fire Weather Zones 221, 222, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236 and 237. * TIMING...For the Red Flag Warning, from 10 AM Wednesday to midnight MDT Wednesday night. For the Fire Weather Watch, from Thursday morning through Thursday evening. * WINDS...For Zone 224, west 30 to 40 mph with gusts to 60 mph. For Zone 225, west 25 to 35 mph with gusts to 45 mph. For all remaining zones, west 20 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 6 percent for all zones. * IMPACTS...Extreme fire danger is expected. Fires will spread uncontrollably and could be very destructive.

This is a Particularly Dangerous Situation that poses a significant threat to life and property for both rural and urban environments in the event of a wildfire start or existing fire. In some cases, safe and timely evacuation may not be possible should a fire approach. Avoid debris burning, campfires, and any outdoor activity or use of equipment that could produce a spark. Follow all local fire restrictions. Visit ready.gov/wildfires#preparedness for tips on how to prepare for a wildfire. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.

Fire Weather Watch issued April 21 at 11:26AM MDT until April 23 at 9:00PM MDT by NWS Pueblo CO

Effective: Tue April 21, 2026, 11:26 AM
Expires: Wed April 22, 2026, 3:30 AM

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO MIDNIGHT MDT WEDNESDAY NIGHT FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 221, 222, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, AND 237... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 221, 222, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, AND 237... * THIS IS A PARTICULARLY DANGEROUS SITUATION FOR ZONES 224 AND 225 * AFFECTED AREA...Fire Weather Zones 221, 222, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236 and 237. * TIMING...For the Red Flag Warning, from 10 AM Wednesday to midnight MDT Wednesday night. For the Fire Weather Watch, from Thursday morning through Thursday evening. * WINDS...For Zone 224, west 30 to 40 mph with gusts to 60 mph. For Zone 225, west 25 to 35 mph with gusts to 45 mph. For all remaining zones, west 20 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 6 percent for all zones. * IMPACTS...Extreme fire danger is expected. Fires will spread uncontrollably and could be very destructive.

This is a Particularly Dangerous Situation that poses a significant threat to life and property for both rural and urban environments in the event of a wildfire start or existing fire. In some cases, safe and timely evacuation may not be possible should a fire approach. Avoid debris burning, campfires, and any outdoor activity or use of equipment that could produce a spark. Follow all local fire restrictions. Visit ready.gov/wildfires#preparedness for tips on how to prepare for a wildfire. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.

Air Quality Alert issued April 21 at 2:10PM MDT by NWS Pueblo CO

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Tue April 21, 2026, 2:10 PM
Expires: Tue April 21, 2026, 10:00 PM

The Colorado Department of Public Health and Environment has issued the following... WHAT...Air Quality Health Advisory for Ozone. WHERE...Douglas, Teller, western Elbert, western El Paso and central Arapahoe Counties. Locations include, but are not limited to Castle Rock, Kiowa, Monument, Manitou Springs, and Woodland Park. WHEN...200 PM Tuesday April 21 to 1000 PM Tuesday April 21 IMPACTS...Ozone concentrations could reach the Unhealthy for Sensitive Groups category within the advisory area Tuesday afternoon and evening. Ozone levels will improve overnight Tuesday night. HEALTH INFORMATION...Public Health Recommendations: 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.