Weather

October 19, 2018 Weather Forecast

October 19, 2018, 1:45 PM HST
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Photo: James Grenz

Flash Flood Watch issued October 19 at 3:18AM HST until October 20 at 6:00PM HST by NWS

Our weather team will bring you any urgent weather alerts or updates as they occur. Check our breaking news section for the latest.

**Click directly on the images below to make them larger. Charts include: Hawaii Island high/low forecasted temperatures, projected winds, projected localized weather conditions and expected wave heights.**

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Looking Ahead

A weak trade wind flow will lead to localized afternoon sea breezes today. A disturbance aloft reaching the islands today will trigger spotty afternoon showers, some heavy from Kauai to Maui, while deeper moisture in place over the Big Island will fuel widespread showers and thunderstorms this afternoon. The disturbance aloft will slowly pass over the state tonight through the weekend as trade winds gradually increase. Heavy showers and a few thunderstorms will be possible, especially across the Big Island. Stronger trade winds will focus clouds and showers over windward slopes next week, though portions of the state could experience an increase in rainfall mid week.

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Hilo

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This Afternoon: Showers likely. The rain could be heavy at times. Mostly cloudy, with a high near 84. East wind 5 to 7 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Showers likely and possibly a thunderstorm. Cloudy, with a low around 68. Light west northwest wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a high near 84. Calm wind becoming northeast around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

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Kona

This Afternoon: Scattered showers and thunderstorms. Mostly cloudy, with a high near 82. West wind 5 to 8 mph becoming calm. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Scattered showers and thunderstorms before midnight, then isolated showers. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday: Isolated showers, then scattered showers and thunderstorms after noon. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 82. Calm wind becoming west northwest around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

Waimea

This Afternoon: Scattered showers and thunderstorms. Mostly cloudy, with a high near 78. Northeast wind 3 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

Tonight: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. East northeast wind 5 to 11 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

Saturday: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 78. Northeast wind 7 to 11 mph. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.

Kohala

This Afternoon: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 70. South southwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 52. Calm wind becoming south southeast 5 to 9 mph after midnight. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 70. East wind 8 to 11 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

South Point

This Afternoon: Scattered showers and thunderstorms. Mostly cloudy, with a high near 83. East wind 11 to 13 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 73. Breezy, with an east wind 11 to 16 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 84. Breezy, with an east wind 13 to 16 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Puna

This Afternoon: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 81. East northeast wind 5 to 8 mph becoming light and variable. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Tonight: Showers likely and possibly a thunderstorm. Cloudy, with a low around 65. Northwest wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

Saturday: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a high near 81. North northeast wind 5 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

Waikoloa

This Afternoon: Scattered showers and thunderstorms. Partly sunny, with a high near 84. West northwest wind 5 to 9 mph becoming east. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Scattered showers and thunderstorms before midnight. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 67. East wind 6 to 9 mph. Chance of precipitation is 30%.

Saturday: Scattered showers and thunderstorms after noon. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 84. North northeast wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Data Courtesy of NOAA.gov

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