Updated: 9:15 am SST on December 07, 2005
Occasional showers with isolated thunderstorms. Highs in the mid 80s. Variable winds 10 mph...with higher gusts in showers.
Scattered showers with isolated thunderstorms. Lows near 80. High near 90. Variable winds 10 mph.
Occasional showers. Highs in the upper 80s. Lows near 80. Variable winds 10 mph.
A few showers. Highs near 90. Northwest winds 10 to 15 mph.
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Area forecast discussion...updated National Weather Service tiyan GU 620 am chst Sat Jul 4 2015 Updated to include micronesia discussion Synopsis...northeast winds and scattered showers and isolated thunderstorm will prevail today. && Discussion... Chan-Hom remains a tropical storm this morning. Again the track is the big question. Previous forecast tracks had Chan-Hom passing close to Guam then through the Tinian channel. The latest track forecast shows Chan-Hom passing north of Saipan. Forecast reflects the change with Guam and Rota probably only getting tropical storm force winds briefly at best. Tinian and Saipan may briefly see typhoon force winds Sunday night. Guam and Rota are still under a typhoon watch this morning. As is apparent from watching this system over the last few days is that the track forecast has changed often. Will leave Guam and Rota in the watch until the forecast track is better behaved. The intensity forecast is not so certain either as Chan-Hom is very disorganized this morning. Will it regain typhoon intensity as predicted is a big question. Again because of the big uncertainty typhoon conditions are possible at some point through Sunday night. After Chan-Hom passage the marianas will be in southwest winds as the storm will drag the monsoon trough north of the local area. && Marine... buoy data showed an east swell over the marianas this morning. There is winds generated along the monsoon trough south of the marianas is pushing waves in this direction generating a southwest swell. The buoy data indicated seas of 8 to 11 feet this morning. Expect little change in the combined seas through tonight. Seas probably will not change very much across Guam and Rota through the forecast. If Chan-Hom passes by Tinian and Saipan seas there may briefly reach 15 to 20 feet Sunday night. && Eastern micronesia... Tropical Storm Chan-Hom centered east-southeast of Guam near 11n149e is behaving more like a monsoonal system with a vast wind field between the Equator and 20n. The strongest winds are concentrated north and south of the center with weaker winds near the center. Fresh to strong monsoon winds south of Chan-Hom are going to maintain unstable weather near Chuuk and Pohnpei through Sunday. Farther east...newly formed tropical depression 11w centered near 10n171e is drifting northwestward over the northern Marshall Islands with deep convection flaring up near the center. Despite fresh southwest winds feeding into 11w...subsident air just south of 11w is going to promote drier weather near Majuro through this evening. Being farther away from the convection...these same winds should keep a few thunderstorms near Kosrae through tonight. Once Chan-Hom has drifted farther northwest of Chuuk and Pohnpei Sunday afternoon...11w will begin to have a bigger influence across Chuuk...Pohnpei and Kosrae. This will prolong showery weather near these three locales through Monday. Once 11w has passed north of these locales...moderate south winds should allow less shower coverage by Monday. For Majuro...moderate trade winds should begin to usher in fair weather from Sunday on. High surf and hazardous seas for small craft will linger near Majuro and Kosrae until Sunday...Pohnpei and Chuuk through Monday. Minor coastal inundations are still possible near Majuro through this evening. Both surf and seas across all locations are expected to subside below hazardous levels by Tuesday. && Western micronesia... discussion for the Chuuk forecast is included under the eastern micronesia section above due to similar synoptic features. The large monsoonal wind field of Tropical Storm Chan-Hom will sustain fresh to occasional strong southwest to west winds across the Republic of Palau and Yap state over the next few days. Anticipate scattered heavy showers near Yap...and widely scattered showers near Koror through Monday. As Chan-Hom finally pulls northwestward over the Philippine Sea early next week...monsoonal winds might begin to decrease over the area. Southwest swell and wind waves are going to maintain hazardous surf and seas for small craft across Palau and Yap through at least Monday. && Gum watches/warnings/advisories... GU...typhoon watch for guz001>004. Marianas waters...typhoon watch for pmz151>154. && $$ Ziobro/chan