Current Conditions
Temp-1.8 C
RH8 %
WindSW 25 mph
Road Status: Closed

Sunday, February 17, 2019 - 05:44 p.m.


The road to the Summit of Maunakea is closed at this time, and will remain closed through the night and into tomorrow morning.

The reason for the closure is the Maunakea Weather Center’s expected forecast of the possibility of fog/ice, high humidity and below freezing temperatures.

A Maunakea Ranger will make an early morning road conditions check, and this message will be updated shortly after.

Mahalo and Have a Wonderful Evening.

Maunakea Rangers

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

Feb 17 2019, 20:44 HST Minimum Maximum UTC | HST
Temperature 271.4 oK 267.5 oK @ 21:54 276.5 oK @ 13:47 oC | K | F
Wind Chill 263.4 oK 257.2 oK @ 23:12 260.4 oK @ 20:41 oC | K | F
Relative Humidity 8% 8% @ 20:37 91% @ 21:52
Pressure 613 mb 611 mb @ 04:02 614 mb @ 10:07
Wind speed 25 mph 17 mph @ 19:01 49 mph @ 01:57 mph | Kts | m/s
Wind direction 214 o

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

mm | inches
Fog No

Random Web Cams

Gemini North (Aimed North)

CFHT Telescope (Aimed North)

Gemini Up (Aimed Up)

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)
Chance for fog/ice
Possibility for afternoon convection
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.