Current Conditions
Temp-0.9 C
RH48 %
WindSSE 23 mph
RoadClosed
Latest Summit Road Surface Observations
LocationDate - TimeConditionGrip Surface TempAir Temp
UKIRTJanuary 17, 2021 - 1948 HSTDryGood -1.1 oC-1.5 oC
Haukea PassCLEAR
Upper Switch BackNo new data from Icesight
Summit Road Surface Observations Trend and UKIRT Web Cam
Latest Lens Code
Not Soiled
Raw UKIRT Road Surface Observations
Date HST xvalue yvalue ratio airtmpc sfctmpc ave cond
code		 cur cond
code		 ave fric
code		 cur fric
code		 soiled
lens		 grip
20210117 19:48:13 1933 1929 1.002 -1.5 -1.1 DRY DRY 0.82 0.82 0 GOOD
20210117 19:47:13 1938 1932 1.003 -1.4 -0.6 DRY DRY 0.82 0.82 0 GOOD
20210117 19:46:13 1935 1933 1.001 -1.4 -0.6 DRY DRY 0.82 0.82 0 GOOD
20210117 19:45:13 1935 1937 0.999 -1.4 -0.6 DRY DRY 0.82 0.82 0 GOOD
20210117 19:44:13 1937 1934 1.001 -1.4 -0.6 DRY DRY 0.82 0.82 0 GOOD
Ice Detector Network Road Surface Observations
Haukea Pass
Date HST xvalue yvalue ratio airtmpc sfctmpc ave cond
code		 cur cond
code		 ave fric
code		 cur fric
code		 soiled
lens		 grip RH
20200118 10:33:59 138 22 6.278 6.11 0.73 WT3 WT3 0.10 0.10 4 POOR 7.85
20200118 10:31:59 142 24 5.800 6.13 0.53 WT3 WT3 0.10 0.10 4 POOR 7.84
20200118 10:29:59 137 22 6.222 5.97 0.65 WT3 WT3 0.10 0.10 4 POOR 9.49
20200118 10:27:59 136 22 6.167 5.85 0.45 WT3 WT3 0.10 0.10 4 POOR 7.44
20200118 10:25:59 134 22 6.111 5.59 -0.01 WT3 IC1 0.10 0.10 4 POOR 8.40
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.