Current Conditions
Temp3.5 C
RH12 %
WindWSW 15 mph
RoadOpen (4x4)
Latest Summit Road Surface Observations

Date - TimeConditionGrip Surface TempAir Temp
April 26, 2018 - 0914 HSTDryGood 20.0 oC7.9 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
20180426 09:14:47 1918 1878 1.021 7.9 20.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:14:42 1911 1882 1.016 7.9 20.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:14:37 1921 1877 1.023 7.9 20.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:14:32 1924 1877 1.025 7.9 20.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:14:27 1924 1874 1.027 7.9 20.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:14:22 1926 1878 1.025 7.9 20.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:14:17 1924 1882 1.023 7.9 20.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:14:12 1916 1871 1.024 7.9 20.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:14:07 1916 1874 1.022 7.8 20.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:14:01 1921 1874 1.025 7.8 20.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:13:48 1917 1873 1.023 7.8 19.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:13:43 1913 1871 1.023 7.8 19.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:13:38 1921 1879 1.022 7.6 19.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:13:33 1907 1878 1.016 7.6 19.4 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180426 09:13:28 1915 1879 1.019 7.6 18.9 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.