This event is no longer active — it's kept here as a record. Recovery may still be underway; the guidance below applies.
1 concurrent flood warnings — 7 counties affected
A severe flood outbreak affected seven counties across Colorado, Wyoming, and Nebraska from August 14–15, 2026, bringing water damage and mold risk to homes in Weld, Larimer, Arapahoe, Denver, and Elbert counties in Colorado, as well as Laramie County, Wyoming, and Banner County, Nebraska.
Overview written from official NOAA / National Weather Service data.
- Type
- Flood Outbreak
- Extent
- ≈ 2,504,504 acres
- Began
- To end
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Affected area map
Each shaded area is one covered warning's reported footprint — this outbreak groups the 10 warnings listed below, colored by hazard type. Press Play below to watch each footprint appear in the order it was issued. Pan and zoom to explore the map.
Interactive affected-area map
Weld County, CO; Larimer County, CO; Arapahoe County, CO; Laramie County, WY; Denver County, CO; Elbert County, CO; Banner County, NE · ≈ 3,900 sq mi reported extent · Enable JavaScript to explore the map.
2026-08-14 23:31 UTC · snapshot 10 of 10
Shown as reported by our sources — not an official product. For current advisories and the authoritative map, see NOAA / National Weather Service ↗.
Restoration help near this event
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Latest updates
Official updates and news coverage for this event, newest first — National Weather Service products, local storm reports, incident updates and press headlines. Official items are verbatim government text; news headlines link out to the original outlet.
- Storm report NWS BOU storm report
FLASH FLOOD — 1 SSE Brighton, CO
Report of water up to the curb on Bromley Lane, with flooding of many streets in Brighton.
- Storm report NWS CYS storm report
FLASH FLOOD — 1 NNW Cheyenne, WY
NWS employee sent photo reports and a video of street flooding.
- Storm report NWS CYS storm report
FLASH FLOOD — 1 N Cheyenne, WY
Flooding reported on roadways.
- Storm report NWS CYS storm report
FLASH FLOOD — 3 NNE Warren Af Base, WY
3 inches of water at Gardenia and Spirit. Water was rising.
Show 35 earlier updates
- Denver7 News
Flood watch issued for portions of northeastern Colorado until 10 p.m.
- Rolling Out News
- NWS BOU storm report Storm report
- The Coloradoan News
- FOX 5 Atlanta News
- River Country News Channel Nebraska News
- Denver7 News
Colorado weather blog: Flood watch, severe t-storm warning in effect
- Denver7 News
Flood watch issued for portions of northeastern Colorado until 10 p.m.
- Your Wyoming Link News
- Adams County Government (.gov) News
Governor Polis Orders Flags to Half Staff in Honor of Rep. Lois Landgraf
- capcity.news News
Miles of County Road 154 shut down after flooding, road damage
- KGAB News
- NWS Denver CO Bulletin
- NWS Denver CO Bulletin
- NWS Denver CO Bulletin
- NWS Cheyenne WY Bulletin
- NWS Denver CO Bulletin
- NWS Cheyenne WY Bulletin
- NWS Denver CO Bulletin
- NWS Denver CO Bulletin
- NWS Denver CO Bulletin
- NWS Cheyenne WY Bulletin
- Fox 59 News
- IranWire News
Heavy Monsoon Rains Cause Severe Flooding Across Northern Iran
- NWS CYS storm report Storm report
- NWS CYS storm report Storm report
- WISH-TV News
Weather alert: heavy rain, additional flooding, and gusty storms remain possible
- WyomingNews.com News
Wyoming DCI confirms investigation into Laramie County coroner
- NWS BOU storm report Storm report
- Panhandle News Channel Nebraska News
- Oil City News News
- Oil City News News
Flooding shuts down McKinley Street underpass; police urge caution
- KGAB News
Thunderstorms expected this afternoon; stay alert for potential flooding.
- 10TV News
DeWine visits American Red Cross shelter in Perry County following severe flooding
- FOX19 | Cincinnati News
Storm damage leaves thousands without power in Clermont, Adams counties
Updates are captured automatically from official and news sources, and may lag the live source. For the very latest, see NOAA / National Weather Service ↗.
Warnings covered
Warnings this outbreak covered
This page tracks the outbreak as a whole; each entry below is one official warning thread with its own live status, map and update log.
- Flash Flood Warning — Adams, CO +2Adams, CO; Central Arapahoe, CO; Eastern Arapahoe, COsevereEnded
- Flash Flood Warning — Adams, CO +1Adams, CO; Weld, COsevereEnded
- Flash Flood Warning — Banner, NE +3Banner, NE; Kimball, NE; Goshen, WY; Laramie, WYsevereEnded
- Flash Flood Warning — Banner, NE +2Banner, NE; Kimball, NE; Laramie, WYsevereEnded
- Flash Flood Warning — Elbert, COElbert, COsevereEnded
- Flash Flood Warning — Laramie, WYLaramie, WYsevereEnded
- Flash Flood Warning — Larimer, COLarimer, COsevereEnded
- Flash Flood Warning — Weld, COWeld, COsevereEnded
- Flash Flood Warning — Weld, COWeld, COsevereEnded
- Flash Flood Warning — Western Arapahoe, CO +2Western Arapahoe, CO; Denver, CO; Jefferson, COsevereEnded