Current Conditions
Temp-1.6 C
RH15 %
WindSSW 5 mph
RoadOpen (4x4)
Latest Summit Road Surface Observations

Date - TimeConditionGrip Surface TempAir Temp
November 25, 2017 - 0102 HSTDryGood -2.2 oC-2.1 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
20171125 01:02:17 1884 1904 0.990 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:02:12 1885 1906 0.989 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:02:07 1883 1905 0.988 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:02:02 1883 1905 0.988 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:01:57 1882 1901 0.990 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:01:52 1882 1905 0.988 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:01:47 1882 1904 0.988 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:01:42 1885 1906 0.989 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:01:37 1880 1908 0.985 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:01:32 1880 1905 0.987 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:01:27 1882 1906 0.987 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:01:22 1880 1905 0.987 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:01:17 1883 1905 0.988 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:01:12 1883 1904 0.989 -2.1 -2.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20171125 01:01:07 1883 1905 0.988 -2.1 -2.2 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.