Weather

April 19, 2018 Weather Forecast

April 19, 2018, 6:00 AM HST
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Photo: James Grenz

Flash Flood Watch issued April 19 at 3:53AM HST until April 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

High pressure north of the state will keep a moderate to breezy trade wind flow in place through the weekend, before strengthening to locally windy levels for the first half of next week. A band of an enhanced clouds and showers associated with an old front combined with an upper level trough moving through the state, will keep showery weather and abundant cloud cover in place through Friday, particularly over windward areas. Some of the showers may be heavy at times and an isolated thunderstorm can’t be entirely ruled out. A more typical trade wind pattern will return Friday night through the middle of next week, with showers favoring windward and mauka areas.

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Hilo

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Today: Occasional showers, with thunderstorms also possible after 7am. Some of the storms could produce heavy rainfall. High near 80. West southwest wind around 6 mph becoming east in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 64. Light and variable wind becoming west southwest around 6 mph after midnight. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Friday: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 80. West southwest wind around 6 mph becoming calm in the afternoon. Chance of precipitation is 90%. 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, with thunderstorms also possible after 7am. Some of the storms could produce heavy rainfall. Widespread haze after 7am. Cloudy, with a high near 84. 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.

Tonight: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.

Friday: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a high near 83. Calm wind becoming west southwest 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

Waimea

Today: Showers likely, then occasional showers and possibly a thunderstorm after 7am. Some of the storms could produce heavy rainfall. High near 75. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

Tonight: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 54. Breezy, with a northeast wind 13 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

Friday: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 74. Breezy, with a northeast wind 14 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

Kohala

Today: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 68. Windy, with an east wind around 24 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 46. Windy, with an east wind 16 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 67. Windy, with an east wind 15 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

South Point

Today: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Cloudy, with a high near 84. Windy, with an east wind 23 to 25 mph, with gusts as high as 32 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Cloudy, with a low around 71. Windy, with an east northeast wind around 23 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Cloudy, with a high near 83. Windy, with an east northeast wind 23 to 28 mph, with gusts as high as 36 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Puna

Today: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 78. West northwest wind 6 to 9 mph becoming northeast in the morning. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

Tonight: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 62. North northeast wind around 9 mph becoming northwest after midnight. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

Friday: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 77. North wind 7 to 9 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

Waikoloa

Today: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a high near 81. East wind 9 to 13 mph becoming north northeast in the afternoon. Chance of precipitation is 60%. 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. Cloudy, with a low around 64. Breezy, with an east wind 10 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

Friday: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Some of the storms could produce heavy rainfall. Cloudy, with a high near 80. Breezy, with an east northeast wind 15 to 20 mph decreasing to 8 to 13 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters 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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