Flash Flood Warning Issued for Southeastern Washington County, CO
This alert is no longer in effect.
NOAA issued it on June 3, 2026, 2 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Denver has issued a Flash Flood Warning for southeastern Washington County in northeastern Colorado until 9:45 PM MDT.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Northeastern Colorado
- Issued
- June 3, 2026
- Issuing authority
- NWS Denver CO
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 2 months ago; use the issuing agency's live warning service for current conditions in Northeastern Colorado.
Alert Details
Flash Flood Warning issued by NWS Denver CO. Effective from May 21, 2026 at 6:51 PM MDT until May 21, 2026 at 9:45 PM MDT.
Affected Areas
Southeastern Washington County in northeastern Colorado, including the area around Cope. This includes the Arikaree River, North Fork Arikaree River, and Gordon Creek.
What You Should Do
Move to higher ground now. Act quickly to protect your life. Be aware of your surroundings and do not drive on flooded roads.
Expected Conditions
Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3 inches of rain have fallen, with additional rainfall amounts of 0.5 to 1 inch possible.
Timeline
The warning is in effect from 6:51 PM MDT to 9:45 PM MDT on May 21, 2026. Flash flooding is ongoing or expected to begin shortly.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (829 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to June 3, 2026.
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