Current Conditions
Temp4.0 C
RH50 %
WindSSW 8 mph
RoadOpen (4x4)
Latest Summit Road Surface Observations

Date - TimeConditionGrip Surface TempAir Temp
May 27, 2017 - 1122 HSTDryGood 30.0 oC8.1 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
20170527 11:22:12 2005 1967 1.019 8.1 30.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:22:07 2000 1972 1.014 8.1 30.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:22:01 1999 1972 1.014 8.1 30.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:21:47 2001 1958 1.022 8.7 30.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:21:42 1995 1958 1.019 8.7 30.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:21:37 2012 1961 1.026 8.7 30.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:21:32 2004 1968 1.018 8.7 30.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:21:27 2004 1958 1.023 8.7 30.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:21:22 2004 1960 1.022 8.7 30.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:21:17 2007 1968 1.020 8.7 31.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:21:12 1999 1965 1.017 8.7 30.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:21:07 2007 1961 1.024 8.7 30.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:21:02 2006 1968 1.019 8.7 30.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:20:57 2005 1962 1.022 8.7 30.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170527 11:20:52 2010 1968 1.021 8.7 30.0 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.