391
FNUS70 PGUM 122334
FWSGUM

Spot Forecast for SE-25-04...NMFS
National Weather Service Tiyan GU
934 AM ChST Sun Jul 13 2025

Forecast is based on forecast start time of 1000 ChST on July 13.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office by email at nws.gum.operations@noaa.gov
if you have questions or concerns with this forecast.

.DISCUSSION...The northern Mariana Islands, including Maug, are
currently on the eastern edge of the monsoon tail extending from
Tropical Storm Nari (06W), with the heaviest showers and thunderstorms
currently northwest of Maug. Tropical Storm Nari is currently located
near 26N142E and is moving east-northeast but should turn towards
the north over the next 24 hours. Scattered showers and isolated
thunderstorms are expected to continue around Maug today and tonight,
with the greatest potential for gusty winds expected during the day
time hours. As Tropical Storm Nari moves northward, the potential for
showers, thunderstorms, and gusty winds will decrease across the
Marianas Monday. Looking towards the middle of the week, a developing
monsoon pater across Palau and western Yap State is expected to shift
north to northwest, bringing the next potential for unsettle weather,
along with an building southwest swell.

.TODAY (MAUG ISLAND)...

Sky/weather.........Mostly cloudy (60-70 percent). Scattered showers
                    and isolated thunderstorms.
Surface winds (kts).Southeast to south winds 15 to 20 knots. Gusts
                    to 25 knots in showers and thunderstorms.
Wave heights........6 to 8 feet.

.TONIGHT (MAUG ISLAND)...

Sky/weather.........Mostly cloudy (45-55 percent). Scattered showers
                    and isolated thunderstorms.
Surface winds (kts).Southeast to south winds 15 to 20 knots.
Wave heights........5 to 7 feet.

.MONDAY (AGRIHAN ISLAND)...

Sky/weather.........Partly sunny (45-55 percent). Scattered showers
                    and isolated thunderstorms in the morning.
                    Isolated showers in the afternoon.
Surface winds (kts).Southeast 15 knots.
Wave heights........5 to 7 feet.

$$
Forecaster...JS
Requested by...Benjamin Richards
Type of request...MARINE
.TAG 2517880.0/GUM
.DELDT 07/13/25
.FormatterVersion 2.0.0
.EMAIL nws.gum.operations@noaa.gov,co.sette@noaa.gov,ops.sette@noaa.gov,benjamin.richards@noaa.gov,eva.schemmel@noaa.gov