Updated: 7:19 AM ChST on January 19, 2015
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Area forecast discussion National Weather Service tiyan GU 720 am chst sun Apr 19 2015 Synopsis... pgua Doppler radar shows a patch of showers moving into the eastern waters of Guam and Rota. This will cause increased cloudiness for Guam and Rota today...especially in the afternoon. The VAD wind profile reveals 12 to 22 knot winds through the lowest 5 thousand feet of the air. && Discussion... minor ripple in the trade-wind flow will be just enough to make skies partly sunny for Guam and Rota today rather than mostly sunny. Rain fall most likely will be a bit above normal...nothing all that significant though. Seas of 5 to 7 feet are expected to build the next few days. They could briefly just touch Small Craft Advisory criteria. Anybody who owns a smaller boat and especially those who plan to take it out in the second half of this week should keep up to date on future wind forecasts. && Eastern micronesia... general synoptic pattern for the region remains unchanged from the last several days. A weak circulation remains in place near Kosrae with a near-equatorial trough extending west-southwestward to south of Chuuk. Kosrae...Pohnpei and Chuuk continue to see pleasant weather this morning with the exception of a few areas of showers mainly south of these locales. However... forecast for the Marshalls has become rather tricky...particularly in the near- term. A large cluster of showers and thunderstorms formed just northwest of kwajalein late Saturday night...spreading and shifting slowly towards the east. Kwajalein observations show showers have been falling the last several hours...rain heavy at times. Inherited forecast and latest model run indicates showers at Majuro today but infrared satellite shows dry weather in place this morning. Latest forecast works to bridge The Gap between current satellite and model guidance. Forecast today shows pleasant weather this morning deteriorating to wetter conditions after noon and continuing into the night. Unsettled weather will persist at least through Monday. Models maintain a somewhat wet trade-wind pattern through midweek. At Kosrae...a slight chance of thunderstorms remain in the forecast through Monday night as the trough and circulation will be near...slowly shifting west. Light and variable winds expected there today. Forecast still calls for pleasant conditions at Pohnpei and Chuuk the next few days with the bulk of showers passing to the north as the circulation heads west. && Western micronesia... Chuuk discussion included above with Pohnpei due to similar weather. Yap and Koror...only minor changes were made to these forecasts. Clouds were increased for today at Yap as a weak trade-wind disturbance passes over the island bringing a few showers and mostly cloudy skies. This disturbance should clear out later this afternoon. Otherwise...a relatively dry trade-wind flow will continue across Yap and Koror through the next several days. Some clouds and showers could arrive from the east later in the coming work week. && Gum watches/warnings/advisories... GU...none. Marianas waters...none. && $$ Stanko/M. Aydlett