Current Conditions
Temp8.6 C
RH19 %
WindNE 13 mph
RoadOpen (4x4)
Latest Summit Road Surface Observations

Date - TimeConditionGrip Surface TempAir Temp
July 26, 2017 - 1243 HSTDryGood 46.7 oC16.1 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
20170726 12:43:48 2125 2020 1.052 16.1 46.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:43:43 2123 2017 1.053 16.0 46.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:43:38 2121 2026 1.047 16.0 46.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:43:33 2122 2026 1.048 16.0 46.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:43:28 2129 2018 1.055 16.0 46.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:43:23 2118 2016 1.051 16.0 46.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:43:18 2116 2024 1.045 16.0 46.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:43:13 2110 2013 1.048 16.0 46.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:43:08 2111 2022 1.044 16.0 46.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:43:03 2103 2021 1.040 16.0 46.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:42:58 2107 2021 1.043 16.0 46.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:42:53 2122 2020 1.051 16.0 46.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:42:48 2117 2026 1.045 16.0 46.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:42:43 2106 2021 1.042 16.0 46.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170726 12:42:38 2109 2015 1.047 16.0 46.1 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.