Current Conditions
Temp4.2 C
RH9 %
WindSE 7 mph
RoadOpen
MAUNA KEA SUMMIT ROAD CONDITIONS
Road Status: Open
Comments

Tuesday, October 21, 2014 - 03:47 p.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 Weather via the CFHT/GEMINI WX Tower and SUBARU


Most Recent Previous 24 hours Options

Oct 31 2014, 15:54 HST Minimum Maximum UTC | HST
Temperature 277.4 oK 273.0 oK @ 20:38 279.5 oK @ 13:19 oC | K | F
Wind Chill 274.7 oK 266.4 oK @ 20:37 273.9 oK @ 15:48 oC | K | F
Relative Humidity 9% 6% @ 06:34 41% @ 00:26
Pressure 618 mb 617 mb @ 05:09 620 mb @ 09:47
Wind speed 7 mph 0 mph @ 16:52 20 mph @ 13:47 mph | Kts | m/s
Wind direction SE

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

mm | inches
Fog No


Random Web Cams

IRTF1 (Aimed West)

Subaru Cat Walk (Aimed North)

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 and ice
Chance for convection/rain
Current HNL NWS Mountain Bulletin(s) - (Latest Forecast)
None
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.
Maps