Current Conditions
Temp7.3 C
RH49 %
WindNE 7 mph
RoadOpen (4x4)
Latest Summit Road Surface Observations

Date - TimeConditionGrip Surface TempAir Temp
July 15, 2018 - 1302 HSTDryGood 43.9 oC12.9 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
20180715 13:02:27 1927 1869 1.031 12.9 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:02:22 1933 1873 1.032 12.8 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:02:17 1923 1867 1.030 12.8 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:02:12 1923 1871 1.028 12.8 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:02:07 1932 1868 1.034 12.8 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:02:02 1930 1874 1.030 12.8 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:01:57 1930 1868 1.033 12.8 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:01:52 1929 1867 1.033 12.8 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:01:47 1923 1875 1.025 12.8 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:01:42 1932 1873 1.031 12.8 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:01:37 1930 1868 1.033 12.8 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:01:32 1939 1868 1.038 12.8 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:01:27 1930 1875 1.029 12.8 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:01:22 1935 1868 1.036 12.8 43.9 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 13:01:17 1926 1877 1.026 12.8 43.9 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.