Current Conditions
Temp0.3 C
RH96 %
WindSW 14 mph
Road Status: Closed

Friday, October 19, 2018 - 05:27 p.m.

The Maunakea Summit Access road is closed to the public at the Visitor Information Station at an elevation of 9,200 feet, due to the following conditions: Fresh snow, thick fog, poor visibility of less than fifty feet, high humidity, dipping temperatures, wet and saturated road and potential for icy roadway surface. Therefore, the summit access road will remain closed throughout the entire night and this message will be updated as conditions change.

We thank you for your patient and understanding.

Maunakea Rangers

1. Any ice or snow on the road.
2. Winds greater than 55 mph for more than 1 hour and/or gusts greater than 65mph.
3. Visibility less than 50 feet.
4. Any emergent condition that makes the road unsafe for travel.

There are very few road closures from April 1 through November 30, and this message will not be updated during this time period unless unusual circumstances develop.

The rest of this website is regularly updated with the summit weather forecast and is a useful source of current Mauna Kea weather conditions.

More Information: Mauna Kea weather varies widely. A calm sunny day may quickly become treacherous with hurricane force winds and blizzard conditions. Summit winds above 120 mph are not uncommon. Snowstorms have even occurred during the summer months.

When conditions are too dangerous, the Summit Access road is closed at the Visitor Information Station to ensure everyone's safety. The road is re-opened as soon as the weather and the roads are safe again.

Traffic delays and road closures on the summit access road may also occur due to the use and transport of heavy equipment, slow vehicle movements, deliveries, road maintenance, stalled or abandoned vehicles, hikers and bikers. Remember that dust, fog or snow can reduce visibility and slow traffic. Specific road closure criteria is listed below:

1. Any ice or snow on the road.
2. Winds greater than 55 mph for one hour and/or gusts greater than 65 mph.
3. Visibility less than 50 feet.
4. Any emergent condition that makes the road unsafe for travel.

Mahalo for your understanding.

Public road conditions and snow report message: (808) 935-6268
Summit Weather via the CFHT/GEMINI WX Tower and SUBARU

Most Recent Previous 24 hours Options

Oct 19 2018, 18:41 HST Minimum Maximum UTC | HST
Temperature 0.3 oC -1.0 oC @ 23:57 2.0 oC @ 12:39 oC | K | F
Wind Chill -5.1 oC -9.6 oC @ 02:14 0.9 oC @ 18:09 oC | K | F
Relative Humidity 96% 83% @ 05:45 99% @ 17:55
Pressure 617 mb 615 mb @ 04:12 618 mb @ 10:26
Wind speed 14 mph 0 mph @ 17:59 44 mph @ 09:44 mph | Kts | m/s
Wind direction SW

dir | deg
Precipitation (as of 8 am) -0.09 mm

mm | inches
Fog Imminent

Random Web Cams

CFHT-ASIVA (Aimed East)

CFHT-C3 (Aimed ESE)

VLBA (Aimed South)

Check the MKWC Current Obs page for additional weather observations and the MKWC Web Cams page for more mountain cams.
Latest Mountain Warnings and Forecasts

Current MKWC Warning(s) - (Latest Forecast)
High humidity, fog and ice
Chance for convection and flurries
Current HNL NWS Mountain Bulletin(s) - (Latest Forecast)
Additional Information

Visiting Mauna Kea Observatories Information
Road is always closed the morning after a snowfall.
Road is always closed while snow removal equipment is in operation.
Road is closed when the pavement has ice/snow.
Snow removal equipment can only remove snow. Thermal heating is needed to remove the final layer of ice that usually forms under the snow.
Other information for visitors to Mauna Kea.