Current Conditions
Temp1.2 C
RH13 %
WindESE 8 mph
RoadOpen (4x4)
Latest Summit Road Surface Observations

Date - TimeConditionGrip Surface TempAir Temp
October 21, 2017 - 0154 HSTDryGood -4.4 oC0.4 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
20171021 01:54:48 1889 1850 1.021 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:54:42 1889 1849 1.022 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:54:37 1889 1850 1.021 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:54:32 1886 1851 1.019 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:54:27 1889 1851 1.020 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:54:22 1890 1849 1.022 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:54:17 1890 1852 1.020 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:54:12 1885 1847 1.020 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:54:07 1889 1846 1.023 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:54:02 1889 1847 1.022 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:53:57 1889 1850 1.021 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:53:52 1888 1847 1.022 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:53:47 1889 1847 1.022 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:53:42 1889 1850 1.021 0.4 -4.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171021 01:53:37 1888 1852 1.019 0.4 -4.4 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.