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Real-time wind speeds, peak gusts, and surface chop forecasts from NOAA National Weather Service, verified public boat launches, USGS surface water telemetry, and Wyoming state boating regulations for Guernsey Reservoir (Wyoming).
Red Flag Warning issued October 9 at 2:59AM MDT until October 9 at 7:00PM MDT by NWS Cheyenne WY
Peak Gusts: 10 mph. Moderate surface chop across main fetch.
Cold Shock Hazard: Life jackets are strongly urged for all vessel occupants across open water.
Ramp Accessibility: Local elevation datum referenced for safe boating operations on Guernsey Reservoir.
Advisory Threshold: Official Lake Wind Advisories trigger when sustained winds reach 15 mph or waves exceed 3 ft.
Current index calculated from verified local atmospheric, hydrographic & alert inputs.
Good for boating (76/100), from 4 available inputs. Supporting this: Wind 5 mph from the south-southeast. Gusts to 6 mph. Working against it: Active severe alert: Red Flag Warning. Not available from a verified source for this lake: visibility and conditions, verified water access. Confidence is moderate (84%) because some inputs are unavailable or older than ideal.
| Forecast Time | Wind (mph) | Gust (mph) | Direction | Surface Chop & Fetch | Watercraft Readiness |
|---|---|---|---|---|---|
| 6 AM | 5 mph | 6 mph | S | Calm mirror surface; flat wake navigation | Optimal |
| 7 AM | 5 mph | 8 mph | S | Calm mirror surface; flat wake navigation | Optimal |
| 8 AM | 5 mph | 12 mph | S | Calm mirror surface; flat wake navigation | Optimal |
| 9 AM | 10 mph | 15 mph | SW | Moderate chop (1–2 ft waves); steady navigation | Favorable |
| 10 AM | 10 mph | 18 mph | SW | Moderate chop (1–2 ft waves); steady navigation | Favorable |
| 11 AM | 15 mph | 21 mph | W | Heavy wind chop (2–4 ft waves); small craft caution | Moderate |
| 12 PM | 15 mph | 23 mph | W | Heavy wind chop (2–4 ft waves); small craft caution | Moderate |
| 1 PM | 15 mph | 23 mph | W | Heavy wind chop (2–4 ft waves); small craft caution | Moderate |
| 2 PM | 15 mph | 23 mph | W | Heavy wind chop (2–4 ft waves); small craft caution | Moderate |
| 3 PM | 15 mph | 22 mph | W | Heavy wind chop (2–4 ft waves); small craft caution | Moderate |
| 4 PM | 15 mph | 20 mph | W | Heavy wind chop (2–4 ft waves); small craft caution | Moderate |
| 5 PM | 10 mph | 18 mph | W | Moderate chop (1–2 ft waves); steady navigation | Favorable |
| 6 PM | 10 mph | 17 mph | W | Moderate chop (1–2 ft waves); steady navigation | Favorable |
| 7 PM | 10 mph | 16 mph | W | Moderate chop (1–2 ft waves); steady navigation | Favorable |
| 8 PM | 10 mph | 15 mph | W | Moderate chop (1–2 ft waves); steady navigation | Favorable |
| 9 PM | 10 mph | 15 mph | W | Moderate chop (1–2 ft waves); steady navigation | Favorable |
| 10 PM | 10 mph | 14 mph | W | Moderate chop (1–2 ft waves); steady navigation | Favorable |
| 11 PM | 10 mph | 14 mph | W | Moderate chop (1–2 ft waves); steady navigation | Favorable |
Surface chop expands with sustained wind duration across Guernsey Reservoir's open water fetch. Early morning hours typically offer the calmest navigation before thermal afternoon winds develop.
Individual boat ramp GPS coordinates are currently being cataloged for Guernsey Reservoir. Public launches are managed by state, county, or local park authorities.
Ramp operational status and courtesy dock availability are subject to seasonal water level shifts and lake management authority guidelines.
Current index calculated from verified local atmospheric, hydrographic & alert inputs.
Good for kayaking (77/100), from 5 available inputs. Supporting this: Wind 5 mph from the south-southeast. Gusts to 6 mph. Working against it: Active severe alert: Red Flag Warning. Confidence is high (90%).