Alyeska
AK · 2,750 ft summit · ANC
NWS Grade
2025–26 Season Snapshot
Storms This Season
66
storms tracked
Season Snowfall
9"
calibrated total
Best Storm
15/100
Tracked
Current Snowpack
68"
Turnagain Pass
Avg Daily Rate
0.2"/day
storms with data
Season SWE
21.1"
snow water equivalent
NWS Forecast Accuracy
NWS overpredicts by 100% at Alyeska
Our calibrated estimates are based on 3 verified storms. When NWS says 12 inches, reality is closer to 0 inches. Don't book flights based on NWS numbers alone.
Dataset is limited to a single date (2026-03-15) with three separate forecast cycles. All storms show complete forecast failure (0% actual depth vs. 0.1–0.9 inch forecast). No rain risk flag present, but marginal temperatures and SWE-only gains suggest mixed precipitation or rapid settling. Recommend collecting multi-season, multi-date data before applying corrections operationally.
Based on 3 verified storms · SNOTEL ground truth (Turnagain Pass)
Storm History — 2025–26 Season
Apr 18 – Apr 18
NWS Forecast
0.2"
Calibrated
—
Actual (SNOTEL)
Pending
Density: Dense
Apr 17 – Apr 17
NWS Forecast
0.1"
Calibrated
—
Actual (SNOTEL)
Pending
Density: Dense
Apr 17 – Apr 17
NWS Forecast
1.0"
Calibrated
0.1"
Actual (SNOTEL)
Pending
Density: Dense
Rate: 0.1"/day
Show 63 more storms
Apr 16 – Apr 16
Level 1 · 0" calibrated
Apr 16 – Apr 16
Level 1 · 0" calibrated
Apr 15 – Apr 15
Level 1 · 0" calibrated
Apr 13 – Apr 13
Level 1 · 0" calibrated
Apr 13 – Apr 13
Level 1 · 0" calibrated
Apr 13 – Apr 13
Level 1 · 0" calibrated
Apr 12 – Apr 12
Level 1 · 0" calibrated
Apr 12 – Apr 12
Level 1 · 0" calibrated
Apr 12 – Apr 12
Level 1 · 0" calibrated
Apr 12 – Apr 12
Level 1 · 0" calibrated
Apr 12 – Apr 12
Level 1 · 0" calibrated
Apr 12 – Apr 12
Level 1 · 0" calibrated
Apr 12 – Apr 12
Level 1 · 0" calibrated
Apr 12 – Apr 12
Level 1 · 0" calibrated
Apr 12 – Apr 12
Level 1 · 0" calibrated
Apr 12 – Apr 13
Level 1 · 0" calibrated
Apr 12 – Apr 13
Level 1 · 0" calibrated
Apr 12 – Apr 13
Level 1 · 0" calibrated
Apr 12 – Apr 13
Level 1 · 0" calibrated
Apr 12 – Apr 12
Level 1 · 0" calibrated
Apr 8 – Apr 8
Level 1 · 0" calibrated
Apr 8 – Apr 8
Level 1 · 0" calibrated
Apr 8 – Apr 8
Level 1 · 0" calibrated
Apr 8 – Apr 8
Level 1 · 0" calibrated
Apr 8 – Apr 8
Level 1 · 0" calibrated
Apr 7 – Apr 7
Level 1 · 0" calibrated
Apr 7 – Apr 7
Level 1 · 0" calibrated
Apr 7 – Apr 7
Level 1 · 0" calibrated
Apr 7 – Apr 7
Level 1 · 0" calibrated
Apr 7 – Apr 8
Level 1 · 0" calibrated
Apr 6 – Apr 6
Level 1 · 0" calibrated
Apr 5 – Apr 5
Level 1 · 0" calibrated
Apr 5 – Apr 5
Level 1 · 0" calibrated
Apr 5 – Apr 5
Level 1 · 0" calibrated
Apr 5 – Apr 5
Level 1 · 0" calibrated
Apr 5 – Apr 5
Level 1 · 0" calibrated
Apr 5 – Apr 5
Level 1 · 0" calibrated
Apr 5 – Apr 5
Level 1 · 0" calibrated
Apr 4 – Apr 4
Level 1 · 0" calibrated
Mar 21 – Mar 21
Level 1 · 0" calibrated
Mar 21 – Mar 21
Level 1 · 0" calibrated
Mar 21 – Mar 21
Level 1 · 0" calibrated
Mar 20 – Mar 20
Level 1 · 0" calibrated
Mar 20 – Mar 20
Level 1 · 0" calibrated
Mar 20 – Mar 20
Level 1 · 0" calibrated
Mar 20 – Mar 20
Level 1 · 0" calibrated
Mar 20 – Mar 20
Level 1 · 0" calibrated
Mar 20 – Mar 20
Level 1 · 0" calibrated
Mar 20 – Mar 20
Level 1 · 0" calibrated
Mar 20 – Mar 20
Level 2 · 1" calibrated
Mar 20 – Mar 20
Level 2 · 1" calibrated
Mar 20 – Mar 20
Level 1 · 0" calibrated
Mar 19 – Mar 20
Level 2 · 1" calibrated
Mar 19 – Mar 20
Level 2 · 1" calibrated
Mar 19 – Mar 19
Level 1 · 0" calibrated
Mar 19 – Mar 19
Level 1 · 0" calibrated
Mar 19 – Mar 21
Level 2 · 1" calibrated
Mar 19 – Mar 21
Level 2 · 1" calibrated
Mar 19 – Mar 21
Level 2 · 1" calibrated
Mar 19 – Mar 20
Level 2 · 1" calibrated
Mar 15 – Mar 15
Level 1 · 0" calibrated
Mar 15 – Mar 15
Level 1 · 0" calibrated
Mar 15 – Mar 15
Level 1 · 0" calibrated
Road & Access
No live DOT road data available for Alyeska.
Historical Patterns
Temperature effect: All three storms occurred during the same date with identical temp range (6–16°F, avg 9°F). Marginal above-freezing conditions may cause rapid settlement or rain-on-snow melt, explaining zero depth accumulation despite SWE gain.
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