Current Conditions
Temp2.8 C
RH92 %
WindSSW 5 mph
Road Status: Closed

Tuesday, August 23, 2016 - 03:17 p.m.

The road to the summit of Mauna Kea is closed at the Visitor Information Station at an elevation of 9,200 feet due to unsafe driving conditions along the Summit Access road. There is currently heavy fog, rain, and occasional light snow flurries at the Summit and along the Summit road.

This message will be updated if conditions change.

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

Aug 24 2016, 02:11 HST Minimum Maximum UTC | HST
Temperature 276.0 oK 274.7 oK @ 16:00 280.2 oK @ 13:01 oC | K | F
Wind Chill 273.8 oK 267.6 oK @ 15:36 273.2 oK @ 02:08 oC | K | F
Relative Humidity 92% 56% @ 09:22 96% @ 16:31
Pressure 619 mb 617 mb @ 04:46 620 mb @ 22:08
Wind speed 5 mph 0 mph @ 22:13 35 mph @ 15:28 mph | Kts | m/s
Wind direction VAR

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

mm | inches
Fog Imminent

Random Web Cams

CFHT-ASIVA (Aimed East)

UH88 All Sky Camera (Aimed Up)

Gemini Telescope (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)
Fog/high humidity
Chance for afternoon convection
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.