After record shattering rain and hurricane force winds last weekend, Hawaii is already dealing with another strong low pressure system moving in from the west, known locally as a Kona Low.

FRIDAY

Catastrophic flash flooding unfolded overnight Thursday into Friday morning on the northern side of O'ahu, after 5-9 inches of rain fell from slow moving thunderstorms. Evacuation orders have been issued for Haleiwa and Waialua as intense flooding cut off roads and inundated low lying areas.

The heavy rain was created by an approaching Kona Low, which will keep the weather pattern rainy through the weekend.

Flood watches are in effect for all of the islands through the end of the weekend. The low is forecast to shift east into next week, leading to sunnier conditions.

Bands of heavy rain will move through the islands at times over the next several days, with intensity of the showers fluctuating. Thunderstorms could lead to the development of flash flooding, especially with saturated soils from the previous Kona low.

Rainfall totals could easily surpass 1-4 inches where thunderstorms train, or move over the same locations multiple times. Most areas can expect lower totals.

Previous System Record Rain & Wind

Rainfall totals from the previous system are almost unfathomable. Each island had at least one weather station record over 20 inches of rain with hurricane force winds recorded as well. These intense conditions left the islands more prone for impacts from following storms.