Current Conditions
Temp9.1 C
RH13 %
WindENE 13 mph
RoadOpen (4x4)
Latest Summit Road Surface Observations

Date - TimeConditionGrip Surface TempAir Temp
May 25, 2018 - 1617 HSTDryGood 32.8 oC11.0 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
20180525 16:17:48 1991 1922 1.036 11.0 32.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:17:43 1989 1918 1.037 11.0 32.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:17:38 1985 1922 1.033 11.0 32.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:17:33 1991 1918 1.038 11.0 32.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:17:28 1989 1923 1.034 11.0 32.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:17:23 1990 1922 1.036 11.0 32.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:17:18 1993 1919 1.038 11.0 32.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:17:13 1988 1918 1.036 11.0 33.3 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:17:08 1988 1922 1.034 11.0 32.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:17:03 1993 1924 1.036 11.0 32.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:16:58 1988 1927 1.032 11.0 32.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:16:53 1995 1918 1.040 11.0 32.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:16:48 1990 1923 1.035 11.0 32.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:16:43 1989 1921 1.036 11.0 32.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180525 16:16:38 1994 1919 1.039 11.0 32.8 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.