Current Conditions
Temp3.2 C
RH11 %
WindNE 22 mph
RoadClosed
Latest Summit Road Surface Observations

LocationDate - TimeConditionGrip Surface TempAir Temp
UKIRTJuly 18, 2019 - 0607 HSTDryGood 0.0 oC2.2 oC
Haukea PassCLEAR
Upper Switch BackNot Operable
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
20190718 06:07:43 1828 1833 0.997 2.2 0.0 DRY DRY 0.80 0.80 0 GOOD
20190718 06:06:43 1823 1831 0.995 2.2 0.0 DRY DRY 0.80 0.80 0 GOOD
20190718 06:05:43 1830 1835 0.997 2.2 0.0 DRY DRY 0.80 0.80 0 GOOD
20190718 06:04:43 1827 1831 0.997 2.2 0.0 DRY DRY 0.80 0.80 0 GOOD
20190718 06:03:42 1828 1829 0.999 2.2 0.0 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
20190704 19:56:48 1790 1683 1.064 5.45 6.27 DRY DRY 0.80 0.80 4 GOOD 22.34
20190704 19:55:47 1791 1680 1.066 5.35 6.31 DRY DRY 0.80 0.80 4 GOOD 25.83
20190704 19:54:47 1786 1608 1.111 5.29 6.25 DRY DRY 0.70 0.70 4 GOOD 23.33
20190704 19:53:48 1784 1582 1.127 5.03 6.25 DRY DRY 0.70 0.70 4 GOOD 32.68
20190704 19:52:47 1781 1523 1.170 5.07 6.39 DRY DRY 0.70 0.70 4 GOOD 32.96
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.