Current Conditions
Temp9.2 C
RH15 %
WindSW 4 mph
RoadOpen (4x4)
Latest Summit Road Surface Observations

LocationDate - TimeConditionGrip Surface TempAir Temp
UKIRTNovember 27, 2021 - 1432 HSTDryGood 35.6 oC12.9 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
20211127 14:32:32 1989 1963 1.013 12.9 35.6 DRY DRY 0.82 0.82 0 GOOD
20211127 14:31:32 1990 1956 1.017 12.9 35.6 DRY DRY 0.82 0.82 0 GOOD
20211127 14:30:32 2002 1960 1.022 12.8 35.6 DRY DRY 0.82 0.82 0 GOOD
20211127 14:29:32 1996 1965 1.016 12.6 35.6 DRY DRY 0.82 0.82 0 GOOD
20211127 14:28:32 1991 1961 1.016 12.6 35.6 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.