Forecast for Big Island Windward and Southeast

Forecast for Big Island Leeward

HIGH SURF ADVISORY FOR WEST FACING SHORES

Swell Summary

High surf advisory remains in effect for W facing shores of the Big Island where small long period swell is still hanging on. The next swell in the sequence is modeled to be a large NW (300-310) medium period swell that will build Friday night into Saturday boosting surf well into the High Surf Advisory range. Taken at face value, modeling suggests warning-level surf late Friday into Saturday. However, close proximity of the parent low likely leads to a component of shorter period fresh swell emanating out of the same NW quadrant. This in turn spreads energy across the short to medium period bands and leads to higher confidence in surf falling into the High Surf Advisory range for N and W facing shores during this time. An SCA for seas exceeding 10 ft will also likely be needed by Friday night over northern and western waters. Deep low pressure presently situated just southeast of Russia's Kamchatka Peninsula will deliver a long period swell next week with forerunners arriving as early as Sunday night. This large, long period NW (310) swell is modeled to peak Monday night and hold through Tuesday before gradually declining through mid- week.

Surf along east and south facing shores will remain small through the week, though a modest uptick in waves on the south shore is expected to hold into the weekend.

NORTH EAST

am        pm  

Surf: Chest to shoulder high N short period wind swell for the morning going more NNE and building into the chest to head range in the afternoon.

Conditions: Bumpy/choppy with NNE winds 15-20mph in the morning shifting NNW for the afternoon.

NORTH WEST

am        pm  

Surf: Waist to chest high N short period wind swell.

Conditions: Choppy/disorganized with NNE winds 10-15mph in the morning increasing to 20-25mph in the afternoon.

WEST

am        pm  

Surf: Knee high NW short period wind swell in the morning with occasional thigh high sets. This drops a bit in the afternoon.

Conditions: Glassy in the morning with ESE winds less than 5mph. Semi glassy conditions for the afternoon with the winds shifting to the SSE.

SOUTH EAST

am        pm  

Surf: Knee high ENE short period wind swell in the morning builds in the afternoon with occasional sets up to waist high.

Conditions: Sideshore/choppy with NNE winds 15-20mph in the morning shifting N 20-25mph in the afternoon.

Data Courtesy of NOAA.gov and SwellInfo.com