Today is forecast to be nearly the same temperature as yesterday.
Nowcast as of 3:16 am HST on November 11, 2009
Now
Flash Flood Watch remains in effect overnight... a narrow line of heavy showers and possible thundershowers about 15 miles northwest of Oahu at 315 am will continue pushing showly toward the southeast. This line should reach the North Shore of Oahu shortly after 4 am with locally heavy downpours and possible lightning strikes. Rainfall rates of 1 to 2 inches per hour can be expected in the heaviest downpours which could cause ponding of water in low lying and poor drainage areas.
Forecast for Oahu Koolau
Updated: 3:45 am HST on November 11, 2009
Flash Flood Watch in effect through late Thursday night...
Today
Mostly cloudy. Occasional showers and thunderstorms in the morning...then showers and thunderstorms likely in the afternoon. Locally heavy rainfall possible. Highs 69 to 78. Northeast winds 15 to 20 mph. Chance of rain 80 percent.
Mostly cloudy with showers and thunderstorms likely. Locally heavy rainfall possible. Lows 59 to 69. Northeast winds 15 to 20 mph shifting to the southeast around 10 mph after midnight. Chance of rain 70 percent.
Thursday
Mostly cloudy with showers and thunderstorms likely. Locally heavy rainfall possible. Highs 73 to 80. Southeast winds 10 to 15 mph. Chance of rain 70 percent.
Cloudy. Occasional showers and thunderstorms in the evening...then showers and thunderstorms likely after midnight. Locally heavy rainfall possible. Lows 64 to 74. East winds 10 to 15 mph. Chance of rain 80 percent.
Friday
Mostly cloudy with occasional showers and slight chance of thunderstorms. Locally heavy rainfall possible. Highs 75 to 82. East winds 10 to 15 mph. Chance of rain 90 percent.
Mostly cloudy with occasional showers and slight chance of thunderstorms. Locally heavy rainfall possible. Lows 63 to 74. East winds 10 to 15 mph. Chance of rain 80 percent.
Saturday
Cloudy with showers likely. Breezy. Highs 75 to 83. East winds 15 to 25 mph. Chance of rain 70 percent.
Saturday Night
Mostly cloudy with showers likely. Lows 63 to 74. East winds 15 to 20 mph. Chance of rain 70 percent.
Sunday
Mostly cloudy with occasional showers. Highs 75 to 85. East winds 10 to 20 mph. Chance of rain 80 percent.
Sunday Night
Mostly cloudy with occasional showers. Lows 64 to 74. East winds 10 to 20 mph. Chance of rain 80 percent.
Monday
Mostly cloudy with occasional showers. Highs 74 to 84. East winds 10 to 15 mph. Chance of rain 80 percent.
Monday Night
Mostly cloudy with showers likely. Lows 63 to 73. East winds 10 to 15 mph. Chance of rain 70 percent.
Tuesday
Mostly cloudy with showers likely. Highs 74 to 84. East winds 10 to 15 mph. Chance of rain 70 percent.
... Flash Flood Watch remains in effect through late Thursday night...
The Flash Flood Watch continues for
* all Hawaiian islands.
* Through late Thursday night.
* Heavy showers and thunderstorms are expected to develop as a strong upper level low develops north of the islands today. The upper low will remain near the islands through at least Thursday... continuing the threat for flash flooding.
Precautionary/preparedness actions...
A Flash Flood Watch means that conditions may develop that lead to flash flooding. Prepare now for the possibility of very heavy rainfall that could cause flash flooding.
Campers and hikers should pay particular attention to later forecasts. Stay away from creeks... streams... and other flood prone areas. Remember that it does not have to be raining where you are for flash flooding to occur.
