Cloud on the sightline
ClearGFS 0% max · 0% mean · Lateral scenarios 0%–0%
ECMWF, layers on the sightline 0%
GFS cloud at the ray’s real height (cloudiest cell), and ECMWF cloud in the layers the ray passes through. The worse of the two counts.
Forecast, not a sightingTomorrow morning · Mon 26 Oct
Will Kangchenjunga be visible?
Looks promising
Best window 07:00–09:00
Little cloud on the sightline in both models and light foreground haze: conditions like past mornings when the mountain was seen. Not a guarantee.
Conditions look favourable; check for updates before you set off.
Illustration of model assumptions on real terrain (Copernicus DEM): not a photograph or live view, and not evidence the forecast is right. · Panchagarh town (rooftop) → Kangchenjunga: 156.7 km, 345.0°
What could block the view
Forecast hour: 07:00 · Promising · Like past sighting mornings, Models differ on visibility, Models differ on humidity, Visibility at a possible model ceiling
Foreground clarity
Models differGFS ≥24 km · ECMWF 10 km · GFS value may be a model ceiling
Humidity 61 / 79 % · Dew-point spread 7.8 / 3.7 °C
GFS and ECMWF visibility and humidity at the viewpoint. A ground-level value, not the whole 134 km sightline.
Haze (aerosol)
Shown, not scoredAOD foreground 0.26 · plains 0.20 · mountains 0.14
PM2.5 52 µg/m³
CAMS aerosol by region (≈45 km cells). Not scored until its effect on the view is validated.
The sightline, in cross-section
The straight line from your eye to the summit, with Earth’s curvature. Shading is the model’s cloud for the selected hour.
Latest sighting reports
Reports are observations at a place and time — not forecasts.
No reviewed reports recently.
History
Model replays of past mornings (stitched short-lead forecasts), not the forecast issued at the time. Dots mark reviewed observations. No accuracy is claimed from replays.
Viewpoints
Documented viewing area · Promising
Tetulia Dak Bungalow
Tetulia, Panchagarh
- Distance
- 134 km
- Bearing
- 351.7°
- Elevation angle
- 3.10°
- Above the foothills
- 2,429 m
Officially identified viewing area. The adjacent Mahananda riverbank picnic corner is part of the same forecast cluster; its foreground trees may differ.
Pin is the bungalow property map POI, not a surveyed standing point.
Standing point not verified · Public access not verified
Sightline clears terrain · K=1 106 m · OSM
Viewing from →Candidate area · Promising
Banglabandha
Banglabandha, Tetulia
- Distance
- 121 km
- Bearing
- 347.4°
- Elevation angle
- 3.52°
- Above the foothills
- 1,248 m
Candidate area. Land port and border zone: no directions are generated. A permitted public viewpoint still needs verification.
Approximate area point (OpenStreetMap Zero Point monument). Used for geometry only.
Standing point not verified · Public access not verified
Sightline clears terrain · K=1 121 m
Viewing from →Candidate area · Promising
Panchagarh town (rooftop)
Panchagarh Sadar
- Distance
- 157 km
- Bearing
- 345.0°
- Elevation angle
- 2.50°
- Above the foothills
- 3,006 m
Candidate area. Assumes a hypothetical 15 m open rooftop — no specific rooftop has been verified.
Town centroid (OpenStreetMap), not a verified rooftop.
Standing point not verified · Public access not verified
Sightline clears terrain · K=1 102 m
Viewing from →Method and limits
This is an experimental forecast. “Promising” and “unfavourable” are calibrated against dated news reports of sightings and failed attempts from 2022–2026, matched to the model data. It is not a validated model, and no percentage is shown.
Sightline
A straight ray from your eye to the summit with Earth curvature and refraction (K = 1 and 7/6), checked against the Copernicus DEM every 60 m.
Cloud
GFS cloud and humidity on 17 pressure levels, interpolated to the ray’s real height (±300 m) at each model cell; levels below model ground are masked.
Clarity and haze
GFS and ECMWF visibility and humidity at the viewpoint are kept as raw values and compared like for like; material differences are flagged. CAMS aerosol (AOD) is shown separately for the foreground, plains and mountains instead of one average. None of these is scored yet.
The decision
“Promising” needs a two-hour window where both models show little cloud on the sightline, no fog at the viewpoint, and foreground haze as light as on past sighting mornings (AOD ≤ 0.30, PM2.5 ≤ 80). “Unfavourable” means thick cloud or heavy haze (AOD ≥ 0.5) all morning. The limits are calibrated against dated reports from 2022–2026; this is not a validated model.