Due to the trough, chance of thunderstorms are back.
Guam – The National Weather Service brought back the chance of thunderstorms as a weak trough is expected to bring in the moisture for the Marianas.
In Area Forecast Discussion from this morning, NWS writes, “For Thursday-Friday…a weak trough is forecast by the GFS/ECMWF to develop just to the east of the Marianas…resulting in light north-northeast winds and more mid-level moisture.” NWS also adds that due to those two factors and heat, short period of thunderstorms are possible on Guam during the afternoon hours.
The Weather Service forecast to see mostly cloudy skies with isolated showers and isolated thunderstorms for both Thursday and Friday on its Mariana Island Forecast. During the weekend, however, moisture is expected to dry up, resulting in partly cloudy skies with just isolated showers.
READ THE LATEST WEATHER FORECAST FROM NWS
.TODAY…PARTLY CLOUDY WITH ISOLATED SHOWERS. ISOLATED AFTERNOON THUNDERSTORMS AROUND GUAM. SOUTHEAST WINDS 5 TO 10 MPH. HIGHS AROUND 89.
.TONIGHT…PARTLY CLOUDY WITH ISOLATED SHOWERS. LIGHT AND VARIABLE WINDS. LOWS NEAR 77.
.THURSDAY THROUGH FRIDAY NIGHT…MOSTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS. NORTHEAST WINDS 5 TO 10 MPH. HIGHS NEAR 88. LOWS AROUND 77.