Current Conditions
Temp1.6 C
RH25 %
WindNNE 21 mph
RoadClosed
Latest Summit Road Surface Observations

LocationDate - TimeConditionGrip Surface TempAir Temp
UKIRTOctober 21, 2019 - 0632 HSTDryGood -3.9 oC1.7 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
20191021 06:32:02 1812 1821 0.995 1.7 -3.9 DRY DRY 0.80 0.80 0 GOOD
20191021 06:31:02 1810 1824 0.992 1.5 -4.4 DRY DRY 0.80 0.80 0 GOOD
20191021 06:30:02 1808 1825 0.991 1.5 -4.4 DRY DRY 0.80 0.80 0 GOOD
20191021 06:29:01 1811 1824 0.993 1.2 -4.4 DRY DRY 0.80 0.80 0 GOOD
20191021 06:28:01 1808 1825 0.991 1.2 -4.4 DRY DRY 0.80 0.80 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
20190922 14:39:11 2407 2951 0.815 6.31 13.99 DRY DRY 0.82 0.82 1 GOOD 98.58
20190922 14:38:11 1675 2188 0.766 6.31 15.45 DRY DRY 0.82 0.77 6 GOOD 99.28
20190922 14:37:11 1737 2261 0.768 6.31 14.93 DRY DRY 0.82 0.80 6 GOOD 99.54
20190922 14:36:11 1818 2236 0.813 6.15 15.13 DRY DRY 0.80 0.80 1 GOOD 99.39
20190922 14:35:11 3263 4197 0.777 6.15 12.29 DRY DRY 0.82 0.82 0 GOOD 99.34
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.