Updated: 11:00 PM HST on February 26, 2015
Partly cloudy with rain showers in the afternoon. High of 84F. Winds from the SSW at 10 to 15 mph shifting to the West in the afternoon. Chance of rain 40%.
Mostly cloudy with rain showers in the evening, then overcast. Low of 72F. Winds less than 5 mph. Chance of rain 40%.
Overcast with rain showers in the afternoon. High of 84F. Winds less than 5 mph. Chance of rain 50%.
Overcast with rain showers. Low of 72F. Winds less than 5 mph. Chance of rain 40%.
Partly cloudy with rain showers in the morning, then overcast with rain showers. High of 86F. Winds from the NNW at 5 to 10 mph. Chance of rain 40%.
Overcast. Low of 72F. Winds from the NE at 5 to 10 mph.
Mostly cloudy in the morning, then clear. High of 84F. Winds from the North at 5 to 10 mph.
Partly cloudy in the evening, then overcast. Low of 72F. Winds from the North at 5 to 10 mph.
Partly cloudy. High of 84F. Winds from the NW at 5 to 10 mph.
Clear. Low of 72F. Winds less than 5 mph.
Clear. High of 84F. Winds from the NW at 5 to 10 mph.
Clear. Low of 70F. Winds from the NNE at 5 to 10 mph.
Clear. High of 82F. Winds from the NNE at 10 to 15 mph.
Clear. Low of 70F. Winds from the NE at 5 to 10 mph.
Clear. High of 79F. Winds from the NNE at 10 to 15 mph.
Clear. Low of 68F. Winds from the NE at 5 to 15 mph.
Clear. High of 77F. Winds less than 5 mph.
Clear. Low of 68F. Winds from the NE at 5 to 10 mph.
Clear. High of 79F. Winds from the NE at 5 to 10 mph.
Clear. Low of 68F. Winds from the ENE at 5 to 10 mph.
Clear. High of 81F. Winds from the ENE at 5 to 10 mph.
Clear. Low of 68F. Winds from the ENE at 5 to 10 mph.
Personal Weather Stations [Add your weather station!]
There are no weather stations in your area, find out more information!
Area forecast discussion...resent National Weather Service tiyan GU 749 am chst Sat Feb 28 2015 Synopsis...northeast winds and a few small showers prevail across the marianas this morning. Relatively dry weather is expected through the weekend and into Monday. && Discussion... little change made to the forecast. 2 kft winds on the VAD were 20 knots and scatterometer data showed northeast winds between 15 to 20 kts. These wind speeds are consistent with current model predictions. Winds of 15 to 20 miles per hour today will decrease to 10 to 15 miles per hour tonight. The lighter winds will persist through Monday before an area of high pressure builds out into the northwest Pacific and elevates wind speeds. Radar imagery this morning showed only a few showers moving across the local area. Satellite precipitable water index showed a slightly higher value over the marianas compared to previous days. This may lead to a slightly increased chance of showers today...but still believe that a slight chance of showers mentioned in today's forecast should suffice. Model predictions keep deep layer moisture lacking through the forecast. GFS...European model (ecmwf) and navgem portray a weak trough moving across the marianas Monday through Tuesday. While these features may produce a few more clouds still only expect isolated showers to prevail because of the lack of deep moisture. && Marine... observations this morning from the ritidian and ipan buoy indicated seas at around 6 to 7 feet. A east and northeast swell are present across the marianas this morning. The northeast swell will be replaced by a north swell Monday. These swells will not become large so only expect a moderate risk of rip currents on north and east facing reefs through the forecast. && Fire weather... Fire Weather Watch is still out until Sunday afternoon. Winds may be high enough and relative humidity low enough this afternoon to produce conditions favorable for another red flag warning. Winds may decrease enough Sunday so that a red flag warning may not necessary. && Eastern micronesia... a fresh trade-wind surge is progressing across micronesia this morning. Its leading edge...in the form of a trade disturbance is passing over Chuuk. Sporadic deep convection associated with this system will persist there through this evening. A trade convergent zone related to the surge can be seen between 3n and 6n...meandering eastward from the disturbance across the date line to near 165w. Showers and possible thunderstorms near this zone will train across Kosrae through Sunday afternoon. Being just north of the northern extent of the zone...shower coverage over Pohnpei should stay at isolated through this evening but cannot rule out a thunderstorm or two. Besides being north of the convergent zone...latest sounding from Majuro also reveals much drier air above 500mb. This will lower the chance of thunderstorms but a weak disturbance embedded along the zone could still squeeze out a few showers there through Sunday. The large sub-tropical high currently north of Wake Island near 35n170e will slowly drift eastward across the date line over the next couple of days. This should allow trade winds to ease across the region. Nevertheless residual trade convergence is going to maintain isolated thunderstorms near Chuuk...Pohnpei and Kosrae until Monday night. As trade winds decrease further toward midweek...a drier trade regime would spread westward from Majuro into the rest of the locales. Latest readings from both altimetry and computer models guidance support a further decrease on the north-northeast swell near Chuuk and Pohnpei. This has allowed surf heights to drop below advisory levels this morning. On another hand...latest ascat satellite imagery indicates the trade-wind surge is becoming more robust with 20 to 25-knot winds between 6n and 15n from 153e to the date line. East-northeast wind waves and swell generated by this surge will cause surf to rise across Chuuk...Pohnpei...Kosrae states and the Marshall Islands today and tonight. With a lower threshold of 8 feet...surf is expected to reach hazardous levels on Kosrae by noon. Surf heights on Chuuk...Pohnpei and Majuro should stay below hazardous levels of 12 feet but higher rip current risk will be likely. There is also a chance for seas to rise back to hazardous levels for small craft operation across the region later this afternoon or evening. Day shift will need to monitor satellite altimetry closely today. && Western micronesia... the Chuuk forecast discussion is included with eastern micronesia above due to a similar synoptic weather pattern as Pohnpei and Kosrae. A near-equatorial trough is anticipated to remain near 3n south of both Koror and Yap for the next couple of days. Therefore drier moderate trades will provide fair weather over these places through Sunday night. A developing frontal system is still forecasted to track east-northeastward from southern China into southern Japan by Monday or Tuesday. This might provoke the near-equatorial trough to lift northward closer to Koror and Yap. Even so...most of the shower activity related to the trough should stay near Koror and south of Yap during the first half of next week. && Gum watches/warnings/advisories... GU...Fire Weather Watch through Sunday afternoon for guz001. Marianas waters...none. && $$ Ziobro/chan