Current Conditions
Temp-2.3 C
RH46 %
WindSW 39 mph
RoadClosed
Latest Summit Road Surface Observations

Date - TimeConditionGrip Surface TempAir Temp
April 29, 2017 - 2102 HSTDryGood 0.0 oC-3.3 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
20170429 21:02:33 2001 1956 1.023 -3.3 0.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:02:28 2000 1957 1.022 -3.3 0.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:02:23 2001 1957 1.022 -3.3 0.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:02:18 2002 1961 1.021 -3.3 0.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:02:13 2000 1958 1.021 -3.3 0.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:02:08 1999 1961 1.019 -3.3 -0.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:02:03 2002 1961 1.021 -3.3 0.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:01:58 2004 1958 1.023 -3.3 0.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:01:53 2001 1958 1.022 -3.3 0.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:01:48 2002 1957 1.023 -3.3 0.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:01:43 2004 1961 1.022 -3.3 -0.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:01:38 1998 1957 1.021 -3.5 0.0 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:01:33 1999 1956 1.022 -3.3 -0.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:01:28 2002 1960 1.022 -3.3 -0.6 1 1 DRY DRY 2 2 0.80 0.80 0 GOOD
20170429 21:01:23 2000 1957 1.022 -3.5 -0.6 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.