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February 18, 2018 Weather Forecast

February 18, 2018, 7:00 AM HST
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Photo Credit: James Grenz

Flash Flood Watch issued February 18 at 3:13AM HST until February 19 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

Moist and unstable conditions will prevail over the state today through Monday, as a strong upper level trough approaches from the west and a weak surface trough currently near Oahu drifts westward. The threat of flooding rainfall and thunderstorms will continue. A more stable east to southeast flow pattern is forecast to develop by Tuesday and continue through midweek, although somewhat wet conditions will persist. Another upper trough developing west of the state could bring more wet and unstable weather to the islands toward the end of the week.

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Hilo

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Today: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Widespread haze after noon. Cloudy, with a high near 76. Light and variable wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers likely and possibly a thunderstorm before midnight, then scattered showers and thunderstorms after midnight. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a low around 63. Light and variable wind becoming west northwest around 5 mph after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Washington’s Birthday: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Some of the storms could produce heavy rainfall. Widespread haze. Mostly cloudy, with a high near 77. Light and variable wind becoming east 5 to 8 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

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Kona

Today: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. Widespread haze after 1pm. Mostly cloudy, with a high near 76. Light south southwest wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Tonight: Showers likely and possibly a thunderstorm before 7pm, then scattered showers and thunderstorms after 7pm. Some of the storms could produce heavy rainfall. Widespread haze. Mostly cloudy, with a low around 63. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Washington’s Birthday: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. Partly sunny, with a high near 76. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

Waimea

Today: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. Widespread haze after 1pm. Cloudy, with a high near 73. Northeast wind around 9 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

Tonight: Showers likely and possibly a thunderstorm before 7pm, then scattered showers and thunderstorms after 7pm. Some of the storms could produce heavy rainfall. Widespread haze. Mostly cloudy, with a low around 52. East northeast wind 8 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

Washington’s Birthday: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. Widespread haze. Mostly cloudy, with a high near 73. Northeast wind 8 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.

Kohala

Today: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Some of the storms could produce heavy rainfall. Widespread haze after noon. Cloudy, with a high near 69. East wind 5 to 9 mph becoming calm in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers likely and possibly a thunderstorm before midnight, then scattered showers and thunderstorms after midnight. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a low around 45. East wind 11 to 13 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Washington’s Birthday: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Some of the storms could produce heavy rainfall. Widespread haze. Mostly cloudy, with a high near 69. East wind 5 to 7 mph becoming northwest in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

South Point

Today: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Some of the storms could produce heavy rainfall. Widespread haze after noon. Cloudy, with a high near 78. Breezy, with an east northeast wind 9 to 15 mph becoming southeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. Mostly cloudy, with a low around 69. Breezy, with an east northeast wind 11 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Washington’s Birthday: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. Partly sunny, with a high near 78. East northeast wind 8 to 14 mph becoming south southeast in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Puna

Today: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Widespread haze after noon. Cloudy, with a high near 75. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

Tonight: Showers likely and possibly a thunderstorm before midnight, then scattered showers and thunderstorms after midnight. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a low around 61. Northwest wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

Washington’s Birthday: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Some of the storms could produce heavy rainfall. Widespread haze. Mostly cloudy, with a high near 76. North wind around 8 mph becoming east in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

Waikoloa

Today: Isolated showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Some of the storms could produce heavy rainfall. Widespread haze after noon. Mostly cloudy, with a high near 77. Northeast wind 6 to 13 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Tonight: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. Mostly cloudy, with a low around 63. East northeast wind 11 to 13 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.

Washington’s Birthday: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. Partly sunny, with a high near 77. East northeast wind 8 to 10 mph becoming west northwest in the afternoon. 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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