Current Conditions
Temp7.2 C
RH12 %
WindNNE 6 mph
RoadOpen (4x4)
Latest Summit Road Surface Observations

Date - TimeConditionGrip Surface TempAir Temp
May 23, 2017 - 1421 HSTDryGood 51.7 oC11.1 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
20170523 14:21:03 1988 1958 1.015 11.1 51.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:20:58 1996 1955 1.021 11.1 51.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:20:53 1993 1958 1.017 11.1 51.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:20:48 1991 1956 1.018 11.1 51.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:20:43 1995 1960 1.018 11.1 51.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:20:38 1990 1963 1.014 11.1 51.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:20:33 2000 1952 1.024 11.1 51.7 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:20:28 1993 1951 1.021 11.1 51.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:20:23 1988 1951 1.019 11.1 51.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:20:18 1991 1945 1.024 11.1 51.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:20:13 1996 1952 1.023 11.1 51.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:20:08 1994 1956 1.019 11.1 51.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:20:03 1994 1957 1.019 11.1 51.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:19:58 1985 1963 1.011 11.1 51.1 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170523 14:19:53 1998 1947 1.026 11.1 51.1 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.