⚠ NW Forest Pass required for the Heliotrope Ridge trailhead. Climbing register at the trailhead. North Cascades National Park boundary lies above.
🏖️ Heliotrope SNOTEL at 0" depth — route is likely melted out at the trailhead. The score still describes the freeze/thaw cycle aloft, but expect a long carry (or no snow at all).
🧠 Decision support, not a verdict. This score is a model — verify it against NWAC, the UW forecast, and your own read of the conditions before you commit to a tour. How it works →

Monday, Oct 26

0 /100
Corn Score

⛔ NOT CORN CONDITIONS: Rain detected: destroys corn surface, creates ice crust

🌙 36°F overnight low ☀️ 38°F daytime high 💨 21 mph wind ❄️ 0" new snow 🔄 0 streak
Confidence 99%
0–44 poor · 45–69 marginal · 70–100 good · methodology

How this score was built ⓘ

  • ⛔ Veto → 0
  • Refreeze (× 0.5) +32.5
  • Warming (× 0.3) +11.1
  • Streak bonus (capped at 20) +0
  • Pre-veto would have been 43.6 / 100

Why this score?

  • ⛔ Veto: Rain detected: destroys corn surface, creates ice crust — score forced to 0.

Condition Components ⓘ

🥶 Refreeze ⓘ

65/100

Air low: 36°F → surface ~35°F (radiative -1°F), Cloud: 74%, Wind: 8 mph, Dew: 30°F, Freezing level: ~5,434 ft (100% of route froze)

⚠ Heliotrope above freezing — score boosted by route-frozen fraction (100% of route froze)
SNOTEL Coleman Saddle (NWS) NWS interpolated

☀️ Warming ⓘ

37/100

High: 38°F (slow softening)

NWS

🔄 Streak ⓘ

0 days

Consecutive freeze/thaw days

💨 Wind ⓘ

21 mph

Max wind (mph) at Coleman Saddle

⛔ Rain detected: destroys corn surface, creates ice crust

Sanity-check this ⓘ

7-Day Outlook ⓘ

Mon
Oct 26
0/100
Lo: 36°
Hi: 38°
🏔️ FL 5,434′
Day: Slight Chance Rain And Snow Night: Mostly Cloudy 68% cl · 9 mph · dew 32°
high conf
tap for details
Tue
Oct 27
58/100
Lo: 35°
Hi: 35°
🏔️ FL 5,185′
Day: Light Snow Likely Night: Chance Rain And Snow 85% cl · 3 mph · dew 34°
high conf
tap for details
Wed
Oct 28
0/100
Lo: 30°
Hi: 30°
❄️ 12.8"
Day: Light Snow Night: Heavy Snow 94% cl · 9 mph · dew 30°
med conf
tap for details
Thu
Oct 29
0/100
Lo: 27°
Hi: 34°
❄️ 0.9"
Day: Mostly Cloudy Night: Light Snow Likely 85% cl · 7 mph · dew 24°
med conf
tap for details
Fri
Oct 30
0/100
Lo: 26°
Hi: 35°
❄️ 0.6"
Day: Slight Chance Light Snow Night: Slight Chance Light Snow 69% cl · 5 mph · dew 21°
med conf
tap for details
Sat
Oct 31
40/100
Lo: 26°
Hi: 37°
Day: Mostly Sunny Night: Partly Cloudy 51% cl · 4 mph · dew 21°
med conf
tap for details
Sun
Nov 1
64/100
Lo: 28°
Hi: 40°
Day: Partly Sunny Night: Mostly Cloudy 48% cl · 2 mph · dew 21°
med conf
tap for details

Freeze/Thaw History ⓘ

Recent Snowfall ⓘ

Day New Snow
Heliotrope 4,040′		 Est. Coleman Saddle
~9,000′		 Source
confidence		 SWE Δ
in / 24h		 Precip
in / 24h		 Depth Low / High
Mon Oct 26 — — none high +0.00 — 0" 38° / 39°
Sun Oct 25 — — none high +0.00 0.6 0" 34° / 39°
Sat Oct 24 — — none high +0.00 0.2 0" 32° / 36°
Fri Oct 23 — — none high +0.00 — 0" 31° / 43°
Thu Oct 22 — — none high -0.10 — 0" 32° / 48°
Wed Oct 21 — — none high +0.00 — 0" 45° / 57°
Tue Oct 20 1.0" ~1.5" SWE-implied medium +0.10 0.3 0" 39° / 54°
Mon Oct 19 — — none high +0.00 — 0" 38° / 47°
Sun Oct 18 — — none high +0.00 0.1 0" 32° / 46°
Sat Oct 17 — — none high -0.10 — 0" 34° / 53°
Fri Oct 16 — — none high +0.00 — ?" 53° / 65°
Thu Oct 15 1.0" ~1.5" SWE-implied medium +0.10 0.1 ?" 42° / 63°
Wed Oct 14 — — none high +0.00 0.2 0" 39° / 49°
Tue Oct 13 — — none high +0.00 — 0" 38° / 46°
Mon Oct 12 — — — low — — 0" 36° / 45°

Latest Observation

Air Temp 37.6°F
Snow Depth 0.0"
SWE 0.0"
Time 2026-10-26T06:00

Forecasts View archive →

No NWAC forecast data yet.

No UW forecast data yet.

Data Collection

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