Current Conditions
Temp2.4 C
RH11 %
WindW 4 mph
Road Status: Open

Sunday, November 30, 2014 - 07:26 a.m.

This announcement is primarily used to inform the public about road closures. Road closures typically occur during winter months due to ice or snow on the road and occasionally for high wind situations. Specific road closure criteria are listed below:

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.

Public road conditions and snow report message: (808) 935-6268
Summit Road Surface Observations

Date - TimeConditionGrip Surface Temperature
Dec 21, 2014 - 1645 HSTDryGood 13.3 oC
The conditions above represent a 1 foot diameter section of road on the summit and you should not assume conditions on the rest of the road are the same. For more details, see Summit Road Surface Observations.
Summit Weather via the CFHT/GEMINI WX Tower and SUBARU

Most Recent Previous 24 hours Options

Dec 21 2014, 16:45 HST Minimum Maximum UTC | HST
Temperature 2.4 oC -2.2 oC @ 06:12 5.0 oC @ 13:22 oC | K | F
Wind Chill 0.6 oC -9.6 oC @ 01:21 0.5 oC @ 16:29 oC | K | F
Relative Humidity 11% 7% @ 22:16 21% @ 15:37
Pressure 616 mb 615 mb @ 15:15 618 mb @ 22:07
Wind speed 2 m/s 2 m/s @ 16:29 20 m/s @ 17:02 mph | Kts | m/s
Wind direction VAR

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

mm | inches
Fog No

Random Web Cams

UKIRT (Aimed SW)

Subaru Cat Walk (Aimed South)

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)
Moderate/strong winds through Sunday AM
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, including safety, summit tours, and public star-gazing.