"Friday through Sunday evening brings the main storm cycle, and guidance is clustered best in that period on timing and wind while snowfall intensity and snow levels wobble more. Expect repeated snow and icing bursts at the summit as a kona storm drives strong south to southwest flow across the Big Island. Most guidance keeps temperatures between 31 and 35 °F with snow levels roughly 13,300 to 14,200 feet when precipitation is active."
"Around 15 inches is a solid working expectation through Sunday evening, and summit gusts in the 60 to 80 mph range should remain the bigger story for anyone watching access or surface conditions. Snow quality will be poor by ski standards, with SLRs mostly 3 to 7, meaning very bad to dense snow rather than anything fluffy."
"Late Sunday night through Tuesday looks like the clearest downshift in the forecast. Confidence is still fairly good on the easing trend itself because guidance converges on weaker wind and much less organized precipitation once the weekend storm lifts away. Gusts should fall back into the 20 to 40 mph range by Monday and Tuesday, with temperatures still hovering near freezing to the mid 30s."
A major kona storm will bring hazardous conditions to Mauna Kea's summit from Friday morning through Sunday evening. Dense snow, icing, and severe southwest winds are expected to accumulate around 15 inches before conditions improve early next week. Snow levels will hover between 13,300 and 14,200 feet with temperatures near 31-35°F, creating poor snow quality with ratios of 3-7. Summit gusts of 60-80 mph pose the greatest threat to access and surface conditions. After Sunday night, conditions ease significantly with Monday appearing mostly dry and Tuesday showing only possible stray showers. Wind gusts will diminish to 20-40 mph by Monday-Tuesday. Beyond Tuesday, snowfall becomes much less certain, with another intermittent snow chance possible from midweek into the following weekend.
Read at SnowBrains
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