Current Conditions
Temp2.3 C
RH9 %
WindNE 35 mph
RoadOpen (4x4)
Latest Summit Road Surface Observations

Date - TimeConditionGrip Surface TempAir Temp
June 28, 2017 - 2129 HSTDryGood 1.1 oC1.8 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
20170628 21:29:31 2176 2149 1.012 1.8 1.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:29:26 2176 2149 1.012 1.8 1.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:29:21 2175 2144 1.014 1.8 1.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:29:16 2173 2147 1.013 1.8 1.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:29:11 2172 2145 1.013 1.8 1.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:29:06 2176 2147 1.014 1.8 1.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:29:01 2176 2147 1.014 1.8 1.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:28:56 2175 2145 1.014 1.8 1.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:28:51 2176 2147 1.014 1.8 1.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:28:46 2173 2147 1.013 1.8 1.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:28:41 2172 2145 1.013 1.8 1.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:28:36 2177 2147 1.014 1.8 1.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:28:31 2175 2143 1.015 1.8 1.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:28:26 2170 2142 1.013 1.8 1.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170628 21:28:21 2171 2144 1.013 1.8 1.7 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.