Typhoon Warning issued April 14 at 9:21AM ChST by NWS Tiyan GU
Details
...SUPER TYPHOON SINLAKU MOVING NORTHWEST TOWARD TINIAN AND
SAIPAN...
.NEW INFORMATION...
A Typhoon Warning has been issued for Alamagan, Pagan, and Agrihan.
.AREAS AFFECTED...
This local statement provides important information and
recommended actions for people in Guam and the Northern Marianas.
.WATCHES/WARNINGS...
A Typhoon Warning is now in effect for Alamagan, Pagan, and Agrihan.
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Flood Watch is in effect for all of Guam and the Northern
Marianas. Please listen closely for any Flood Warnings that might
be in effect for your area.
Please check the latest public and marine forecasts for detailed
information about additional hazards.
.STORM INFORMATION...
At 8 AM ChST, the center of Super Typhoon Sinlaku (04W) was
located by PGUA radar near latitude 14.1N, longitude 146.7E. This
was about 130 miles east-northeast of Guam. Storm motion was
northwest, 320 degrees, at 7 mph. Storm intensity was 165 mph.
.SITUATION OVERVIEW...
Super Typhoon Sinlaku (04W) continues to move northwest toward
the Marianas, with rain bands of Sinlaku moving south to south-
southeast rotating in over the islands, and continuing to bring
periods of heavy showers, thunderstorms, and strong winds. The
most recent storm track produced by the Joint Typhoon Warning
Center (JTWC) has shifted slightly north but continues to favor
the center of Sinlaku passing near or over Tinian and Saipan,
potentially north of Saipan. While Sinlaku is forecasted to
gradually weaken the next few days, it is expected to cross the
Marianas near or over Tinian and Saipan as a Category 4 typhoon.
Recommendations
People should be in a designated shelter or in a sturdy and
reinforced concrete building to ride out the storm as tropical storm
force winds are occurring and will be increasing through the day. Due
to the size of the storm, tropical storm force winds are expected to
continue through Wednesday night and into Thursday morning for Rota
and Thursday evening for Tinian and Saipan. While recent forecast
tracks continue to favor the center of Sinlaku passing near or over
Tinian and Saipan, typhoon force winds of 74 mph or greater are
still possible for Rota late today and tonight. Tinian and Saipan
should prepare for the potential for extensive damage, especially to
non-concrete roofs and buildings.
If staying in a home, turn the refrigerator to maximum cold and keep
it closed. Turn off propane tanks and unplug small appliances. Fill
the bathtub with water in case the tap water becomes unavailable
after the storm. This is for cleaning and flushing purposes. Do not
drink it.
Stay indoors during heavy rain and windy conditions associated with
Super Typhoon Sinlaku (04W). The window of time to complete
preparations for the protection of life and property is very soon
to close. Evacuate if directed to do so by local officials, or if
your home is vulnerable to high winds or flooding. Heed the
advice of your local emergency managers and officials, and
continue to monitor forecasts by your local National Weather
Service office in Tiyan, Guam. Remain in a sturdy shelter until
the "all clear" is given.
.WIND INFORMATION...
Northeasterly tropical storm force winds around 39 mph are expected
to start this afternoon and potentially increasing to typhoon
winds around 75 mph late Wednesday night as Sinlaku passes near
to the west, and winds shift toward the southeast. The size of the
storm and overall storm motion will maintain southeast tropical
storm winds through Friday afternoon as Sinlaku continues on its
accelerated northward trek after exiting the Marianas later in the
week.
.COASTAL INUNDATION AND SURF INFORMATION...
Seas of 20 to 30 feet remain possible, with dangerous surf and
significant coastal inundation and beach erosion possible.
.OTHER STORM EFFECTS...
Heavy, intense rainfall with STY Sinlaku is likely for much of the
week, bringing rainfall amounts of 10 to 13 inches by Friday, with
rainfall amounts upwards of 15 to 25 inches near the center, as
the system crosses the Marianas. The exact track of Sinlaku will
determine where the heaviest rainfall will set up across the
islands.
Stay indoors during heavy rain and windy conditions associated with
Super Typhoon Sinlaku (04W). The window of time to complete
preparations for the protection of life and property is very soon
to close. Evacuate if directed to do so by local officials, or if
your home is vulnerable to high winds or flooding. Heed the
advice of your local emergency managers and officials, and
continue to monitor forecasts by your local National Weather
Service office in Tiyan, Guam. Remain in a sturdy shelter until
the "all clear" is given.
.WIND INFORMATION...
Northeasterly tropical storm force winds around 39 mph are expected
to start this evening and potentially increasing to typhoon winds
around 75 mph early Thursday morning as Sinlaku passes near to the
west, and winds shift toward the southeast. The size of the storm and
overall storm motion will maintain southeast tropical storm winds
through the end of the week as Sinlaku continues on its accelerated
northward trek after exiting the Marianas.
.COASTAL INUNDATION AND SURF INFORMATION...
Seas of 20 to 30 feet remain possible, with dangerous surf and
significant coastal inundation and beach erosion possible.
.OTHER STORM EFFECTS...
Heavy, intense rainfall with STY Sinlaku is likely for much of the
week, bringing rainfall amounts of 10 to 13 inches by the Friday,
with rainfall amounts upwards of 15 to 25 inches near the center,
as the system crosses the Marianas. The exact track of Sinlaku
will determine where the heaviest rainfall will set up across the
islands.
Stay indoors during heavy rain and windy conditions associated with
Super Typhoon Sinlaku (04W). The window of time to complete
preparations for the protection of life and property is very soon
to close. Evacuate if directed to do so by local officials, or if
your home is vulnerable to high winds or flooding. Heed the
advice of your local emergency managers and officials, and
continue to monitor forecasts by your local National Weather
Service office in Tiyan, Guam. Remain in a sturdy shelter until
the "all clear" is given.
.WIND INFORMATION...
Northeasterly tropical storm force winds around 39 mph are expected
to start Wednesday and potentially increasing to typhoon winds
around 75 mph Thursday afternoon as Sinlaku passes near to the west,
and winds shift toward the southeast. The size of the storm and
overall storm motion will maintain southeast tropical storm winds
through the end of the week as Sinlaku continues on its accelerated
northward trek after exiting the Marianas.
.COASTAL INUNDATION AND SURF INFORMATION...
Seas of 20 to 30 feet will be possible, with dangerous surf and
significant coastal inundation and beach erosion possible.
.OTHER STORM EFFECTS...
Heavy, intense rainfall with STY Sinlaku is likely for much of the
week, with rainfall amounts upwards of 15 to 25 inches near the
center, as the system crosses the Marianas. The exact track of
Sinlaku will determine where the heaviest rainfall will set up
across the islands.