Current Conditions
Temp-3.4 C
RH57 %
WindSW 48 mph
Road Status: Closed

Saturday, April 29, 2017 - 06:31 p.m.

The road to the summit of Mauna Kea is closed to the public due to poor visibility less than 10 feet along with wet and icy road conditions. Summit temperatures are below freezing and we are under a Winter Storm Warning issued by the National Weather Service from midnight until 6 o'clock Sunday evening for all Big Island Summits. Rangers will continue to monitor conditions and this message will be updated periodically.

Thank you for your patience and understanding.


MK Ranger

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

Apr 29 2017, 23:06 HST Minimum Maximum UTC | HST
Temperature -3.2 oC -3.4 oC @ 22:44 3.3 oC @ 12:13 oC | K | F
Wind Chill -14.3 oC -15.1 oC @ 22:32 -9.3 oC @ 23:01 oC | K | F
Relative Humidity 57% 13% @ 01:50 95% @ 15:54
Pressure 611 mb 611 mb @ 22:57 614 mb @ 23:12
Wind speed 48 mph 12 mph @ 16:09 61 mph @ 21:58 mph | Kts | m/s
Wind direction SW

dir | deg
Precipitation (as of 8 am) 0.00 mm

mm | inches
Fog Possibility

Random Web Cams

UH88 All Sky Camera (Aimed Up)

MLO Solar Radiation Deck (Aimed East)

Keck1 (Aimed NNE)

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)
Fog, ice and high humidity
Increasing winds
Chance for convection/snow
Current HNL NWS Mountain Bulletin(s) - (Latest Forecast)
Winter Storm Warning/Watch/Advisory
Non-Precipitation Warning
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.