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December 19, 2017 Weather Forecast

December 19, 2017, 3:00 AM HST
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Photo Credit: James Grenz

Flash Flood Watch issued December 18 at 3:33PM HST until December 21 at 6:00AM 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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Hilo

Today: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a low around 63. Light west southwest wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

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Tonight: Occasional showers and thunderstorms, mainly after 7am. Some of the storms could produce heavy rainfall. Widespread haze. High near 76. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

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Tomorrow: Occasional showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm after 7pm. Some of the storms could produce heavy rainfall. Widespread haze. Low around 62. Light southwest wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Kona

Today: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Cloudy, with a low around 62. Light east northeast wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

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Tonight: Occasional showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. High near 76. Light and variable wind becoming north around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Tomorrow: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 61. North wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

Waimea

Today: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a low around 51. Light east northeast wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Occasional showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. High near 68. Light and variable wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

Tomorrow: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a low around 51. West wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.

Kohala

Today: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a low around 44. Light west wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Occasional showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. High near 64. Light west southwest wind increasing to 6 to 11 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

Tomorrow: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a low around 44. West southwest wind 5 to 11 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

South Point

Today: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Cloudy, with a low around 71. Northeast wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Occasional showers and thunderstorms. Some of the storms could produce heavy rainfall. High near 77. East northeast wind 7 to 11 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tomorrow: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a low around 70. East northeast wind 5 to 9 mph becoming light north after midnight. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Puna

Today: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Cloudy, with a low around 61. Light and variable wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Occasional showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. High near 74. Light and variable wind becoming north around 6 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

Tomorrow: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a low around 60. West wind 3 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

Hamakua

Today: Occasional snow showers. The snow could be heavy at times. Some thunder is also possible. Low around 26. Very windy, with a southwest wind around 34 mph, with gusts as high as 43 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 2 to 4 inches possible.

Tonight: Occasional snow showers. The snow could be heavy at times. Some thunder is also possible. High near 35. Strong and damaging winds, with a west southwest wind 34 to 39 mph increasing to 41 to 46 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

Tomorrow: Occasional snow showers. The snow could be heavy at times. Some thunder is also possible. Low around 22. Strong and damaging winds, with a west southwest wind 30 to 40 mph, with gusts as high as 49 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

Waikoloa

Today: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. Cloudy, with a low around 62. Light east wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Occasional showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread haze. High near 77. Light and variable wind becoming east around 6 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

Tomorrow: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 61. East wind 3 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Synopsis

Showers will increase tonight with locally heavy rain and thunderstorms possible across the central and eastern islands through Wednesday night. A cooler and drier airmass will fill in behind a front from northwest to southeast down the island chain Tuesday night through Friday. Another weak front is expected to move into Kauai Friday night, then stall out over the central and eastern islands over the weekend. Another cold front may approach the state from the northwest early next week.

Data Courtesy of NOAA.gov

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