Current Conditions
Temp3.5 C
RH45 %
WindENE 0 mph
RoadOpen (4x4)
Latest Summit Road Surface Observations

Date - TimeConditionGrip Surface TempAir Temp
July 15, 2018 - 1844 HSTDryGood 12.8 oC4.4 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
20180715 18:44:23 1940 1886 1.028 4.4 12.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:44:18 1943 1888 1.029 4.4 12.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:44:13 1939 1888 1.027 4.4 12.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:44:08 1945 1885 1.032 4.4 12.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:44:01 1941 1888 1.028 4.4 12.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:43:47 1947 1893 1.029 4.4 12.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:43:42 1946 1894 1.028 4.4 12.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:43:37 1945 1894 1.027 4.4 12.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:43:32 1943 1894 1.026 4.4 12.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:43:27 1946 1894 1.028 4.4 12.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:43:22 1945 1893 1.028 4.4 12.2 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:43:17 1945 1893 1.028 4.4 12.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:43:12 1947 1894 1.028 4.4 12.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:43:07 1946 1894 1.028 4.4 12.8 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20180715 18:43:02 1944 1896 1.025 4.4 12.2 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.