Current Conditions
Temp5.6 C
RH16 %
WindNNE 0 mph
RoadOpen (4x4)
Latest Summit Road Surface Observations

Date - TimeConditionGrip Surface TempAir Temp
June 24, 2017 - 1922 HSTDryGood 10.6 oC7.2 oC
Summit Road Surface Observations Trend and UKIRT Web Cam

Latest Lens Code

Not Soiled
Raw Summit Road Surface Observations

Date HST xvalue yvalue ratio airtmpc sfctmpc ave cond
index
cur cond
index
ave cond
code
cur cond
code
ave fric
index
cur fric
index
ave fric
code
cur fric
code
soiled
lens
grip
20170624 19:22:47 2123 2076 1.023 7.2 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:22:42 2127 2078 1.024 7.2 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:22:37 2204 2098 1.051 7.2 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:22:32 2128 2083 1.022 7.2 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:22:27 2131 2082 1.023 7.2 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:22:22 2128 2081 1.023 7.2 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:22:17 2131 2082 1.023 7.2 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:22:12 2133 2088 1.022 7.2 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:22:07 2128 2085 1.020 7.2 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:22:01 2133 2087 1.022 7.2 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:21:48 2138 2081 1.028 7.4 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:21:43 2137 2083 1.026 7.4 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:21:38 2136 2082 1.026 7.4 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:21:33 2137 2083 1.026 7.4 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170624 19:21:28 2139 2083 1.027 7.4 10.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
Disclaimer

The road surface condition detector cannot determine the road surface condition when there is fog. However, if the temperature is near freezing and fog is present, road ice is highly likely.

The road surface condition detector only looks at a one foot diameter area of asphalt located on the summit ridge adjacent to the United Kingdom Infra-Red Telescope. As Mauna Kea has many micro-climates, the detector may indicate the road is clear while hazardous conditions exist in other locations.