A live wet-bulb check. Can snowmakers run where you are, and when?

How this works
We pull NOAA's hourly forecast for your location and calculate the wet-bulb temperature for each hour. Snowmakers rely on wet-bulb because it accounts for both cold and dry air, the two conditions that let water droplets freeze in flight. Below 28°F−2°C they can run; below 25°F−4°C the snow is good quality.

Can they make snow at Alyeska Resort?

YES

Snowmaking possible at the summit of Alyeska Resort, AK

Summit: 25°F−4°C air · 100% humidity (estimated)

Great snowmaking conditions
Colder Snowmaking line 28°F−2°C Warmer

Snowmaking conditions now, lasting through the 48-hour forecast.

Next 48 hours wet-bulb by hour; columns below the line are snowmaking hours
28°F−2°C 18°F−8°C Now Mon Tue

Use the left and right arrow keys to step through hours.

  • Ideal
  • Great
  • Marginal
  • Too warm
  • Night
Hourly table
HourAirHumidityWet-bulbSnowmaking
Sun 8 AM25°F−4°C100%24.4°F−4.2°CGreat
Sun 9 AM24°F−5°C100%23.4°F−4.8°CGreat
Sun 10 AM24°F−5°C100%23.4°F−4.8°CGreat
Sun 11 AM24°F−5°C100%23.4°F−4.8°CGreat
Sun 12 PM25°F−4°C100%24.4°F−4.2°CGreat
Sun 1 PM26°F−4°C100%25.4°F−3.7°CMarginal
Sun 2 PM27°F−3°C100%26.4°F−3.1°CMarginal
Sun 3 PM27°F−3°C100%26.4°F−3.1°CMarginal
Sun 4 PM29°F−2°C100%28.4°F−2.0°CMarginal
Sun 5 PM29°F−2°C100%28.4°F−2.0°CMarginal
Sun 6 PM28°F−2°C100%27.4°F−2.6°CMarginal
Sun 7 PM27°F−3°C100%26.4°F−3.1°CMarginal
Sun 8 PM26°F−4°C100%25.4°F−3.7°CMarginal
Sun 9 PM24°F−5°C100%23.4°F−4.8°CGreat
Sun 10 PM23°F−5°C100%22.4°F−5.4°CGreat
Sun 11 PM22°F−6°C100%21.3°F−5.9°CGreat
Mon 12 AM21°F−6°C100%20.3°F−6.5°CGreat
Mon 1 AM20°F−7°C100%19.3°F−7.0°CIdeal
Mon 2 AM20°F−7°C100%19.3°F−7.0°CIdeal
Mon 3 AM20°F−7°C100%19.3°F−7.0°CIdeal
Mon 4 AM20°F−7°C100%19.3°F−7.0°CIdeal
Mon 5 AM19°F−7°C100%18.3°F−7.6°CIdeal
Mon 6 AM20°F−7°C100%19.3°F−7.0°CIdeal
Mon 7 AM19°F−7°C100%18.3°F−7.6°CIdeal
Mon 8 AM19°F−7°C100%18.3°F−7.6°CIdeal
Mon 9 AM19°F−7°C100%18.3°F−7.6°CIdeal
Mon 10 AM20°F−7°C100%19.3°F−7.0°CIdeal
Mon 11 AM21°F−6°C100%20.3°F−6.5°CGreat
Mon 12 PM23°F−5°C100%22.4°F−5.4°CGreat
Mon 1 PM24°F−5°C100%23.4°F−4.8°CGreat
Mon 2 PM25°F−4°C100%24.4°F−4.2°CGreat
Mon 3 PM26°F−4°C100%25.4°F−3.7°CMarginal
Mon 4 PM27°F−3°C100%26.4°F−3.1°CMarginal
Mon 5 PM27°F−3°C100%26.4°F−3.1°CMarginal
Mon 6 PM26°F−4°C100%25.4°F−3.7°CMarginal
Mon 7 PM25°F−4°C100%24.4°F−4.2°CGreat
Mon 8 PM25°F−4°C100%24.4°F−4.2°CGreat
Mon 9 PM24°F−5°C100%23.4°F−4.8°CGreat
Mon 10 PM23°F−5°C100%22.4°F−5.4°CGreat
Mon 11 PM23°F−5°C100%22.4°F−5.4°CGreat
Tue 12 AM22°F−6°C100%21.3°F−5.9°CGreat
Tue 1 AM21°F−6°C100%20.3°F−6.5°CGreat
Tue 2 AM21°F−6°C100%20.3°F−6.5°CGreat
Tue 3 AM20°F−7°C100%19.3°F−7.0°CIdeal
Tue 4 AM20°F−7°C100%19.3°F−7.0°CIdeal
Tue 5 AM19°F−7°C100%18.3°F−7.6°CIdeal
Tue 6 AM19°F−7°C100%18.3°F−7.6°CIdeal
Tue 7 AM19°F−7°C100%18.3°F−7.6°CIdeal

Right now at the base

Light rain
38°F3°C feels like 30°F−1°C
Wind
12 mph19 km/h, gusts 18 mph30 km/h
Humidity
89%
Precipitation
99% chance

Nearest station PATO at 7:53 AM: Light rain, 41°F5°C, 86% humidity (39°F4°C wet-bulb), wind 6 mph9 km/h.

Snow forecast new snow at the base, NOAA forecast

Next 24 h
0.2″0.5 cm
Next 48 h
0.2″0.5 cm
Next 72 h
0.2″0.5 cm
0.2″0.5 cm Now Mon Tue Wed

Use the left and right arrow keys to step through 6-hour periods.

Snowfall table
PeriodNew snow
Sun 8 AM – 2 PM0″0 cm
Sun 2 PM – 8 PM0″0 cm
Sun 8 PM – 2 AM0″0 cm
Mon 2 AM – 8 AM0.2″0.5 cm
Mon 8 AM – 2 PM0″0 cm
Mon 2 PM – 8 PM0″0 cm
Mon 8 PM – 2 AM0″0 cm
Tue 2 AM – 8 AM0″0 cm
Tue 8 AM – 2 PM0″0 cm
Tue 2 PM – 8 PM0″0 cm
Tue 8 PM – 2 AM0″0 cm
Wed 2 AM – 8 AM0″0 cm

7-day outlook

  1. Today 42°F6°C 32°F0°C Light Rain ❄︎ <0.5″<1.3 cm
  2. Mon 40°F4°C 31°F−1°C Light Snow Likely then Slight Chance Light Rain ❄︎ <0.5″<1.3 cm
  3. Tue 40°F4°C 30°F−1°C Mostly Sunny
  4. Wed 42°F6°C 36°F2°C Mostly Sunny then Slight Chance Light Rain
  5. Thu 41°F5°C 38°F3°C Chance Rain And Snow
  6. Fri 41°F5°C 34°F1°C Light Rain
  7. Sat 38°F3°C 30°F−1°C Chance Rain And Snow

Forecast for 8 AM · NOAA grid updated 2:48 AM

About this forecast

Alyeska Resort is a ski resort in Alaska with a base at 250 ft and a summit at 3,939 ft, 3,689 ft of vertical. This page checks NOAA's hourly forecast at the base and the summit every time you load it and works out the wet-bulb temperature, which is what decides whether snow guns can run. Snowmakers can start below 28°F−2°C wet-bulb, and make good snow below 25°F−4°C.

All ski resorts by state →

Base: NOAA's forecast for the base area (forecast grid elevation 197 ft). Summit: estimated from the base forecast with typical cooling by elevation; on calm, clear nights cold air can pool at the base instead.

Click a pin or anywhere on the map to check it.