Select Forecast Location
Blends forecasts from all 6 models using performance weights saved in your browser cache. Instantly loads using a quick parallel download.
Downloads 7 days of actual history and past forecasts, evaluates them in real-time to calculate weights, downloads current forecasts, and averages them in a single synchronous operation. Heavy on data, slower loading time (~6-8s), and subject to recent archive data availability.
Wind and weather from 6 AM to 10 PM.
Run forecast to generate daily summary.
Run forecast to generate synoptic-scale analysis and planetary boundary layer wind shift projections.
Run analysis to generate race-day hourly breakdown.
Select race window start/end times and count, then run forecast to generate individual race strategy guides.
Run analysis to generate wind-direction-specific geographic strategy for the selected racing area.
Run analysis to populate mixing height inversion detection, gust potential, and wind shear calculations.
Run forecast to analyze direction trends and model agreement.
Run analysis to detect right-shifting (veering) vs. left-shifting (backing) gust patterns.
Flying Scot runs a slower Portsmouth DPN than Thistle (83), so FS elapsed time exceeds the Thistle target.
Formula: FS time = Thistle target Γ (FS DPN Γ· 83). DPN values: Light 92.0 Β· Medium 90.4 Β· Heavy 89.5.
| Wind Range | 40 min race | 45 min race | 50 min race | 55 min race | 60 min race | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Target | FS | +Ξ | Target | FS | +Ξ | Target | FS | +Ξ | Target | FS | +Ξ | Target | FS | +Ξ | |
| Light <8 kts DPN 92.0 |
40 | 44.3 | +4.3 | 45 | 49.9 | +4.9 | 50 | 55.4 | +5.4 | 55 | 61.0 | +6.0 | 60 | 66.5 | +6.5 |
| Medium 8β12 kts DPN 90.4 |
40 | 43.6 | +3.6 | 45 | 49.0 | +4.0 | 50 | 54.5 | +4.5 | 55 | 59.9 | +4.9 | 60 | 65.3 | +5.3 |
| Med-Heavy 12β15 kts DPN 90.4 |
40 | 43.6 | +3.6 | 45 | 49.0 | +4.0 | 50 | 54.5 | +4.5 | 55 | 59.9 | +4.9 | 60 | 65.3 | +5.3 |
| Heavy 15+ kts DPN 89.5 |
40 | 43.1 | +3.1 | 45 | 48.5 | +3.5 | 50 | 53.9 | +3.9 | 55 | 59.3 | +4.3 | 60 | 64.7 | +4.7 |
All times in minutes. Target = Thistle course setter's intended race duration. FS +Ξ = extra time Flying Scot needs to finish. Med-Heavy shares DPN 90.4 with Medium (Portsmouth table has 3 bands; 12β15 kt falls in medium bracket).
Calculate optimal course-to-steer headings (gybe angles) and downwind Velocity Made Good (VMG) for the Flying Scot.
Evaluate forecast accuracy and log tactical observations. This form is optional and does not block forecast checks. Data is saved locally in your browser.