[Tropical] Hurricane Local Statement

[EMWIN Server]

WTPQ81 PGUM 231042
HLSPQ1

URGENT - IMMEDIATE BROADCAST REQUESTED
Tropical Storm 20W Local Statement
National Weather Service TIYAN GU
842 PM ChST Thu Sep 23 2021

...20W UPGRADED TO TROPICAL STORM...

.NEW INFORMATION...
None.

.AREAS AFFECTED...
This local statement provides important information and
recommended actions for people in Select locations within Guam
and the Northern Marianas.

.Watches/Warnings...
A Tropical Storm Warning continues for Guam, Rota, Tinian, and
Saipan.

A Flood Watch is also in effect for all of the Marianas. Please
listen closely for any flood warnings that might be issued for
your area.

.STORM INFORMATION...
At 7 PM ChST...the center of Tropical Storm 20W was located near
Latitude 13.3N...Longitude 144.1E. This was About 45 miles west-
southwest of Guam. Storm motion was west-northwest at 16 mph. Storm
intensity was 40 mph. Tropical Storm force winds extend up to 160
miles northeast of the center.

.SITUATION OVERVIEW...
Tropical storm force winds were reported over portions of Saipan,
with 43 mph winds and gusts to 55 mph at Wireless Ridge. Winds will
increase tonight as Tropical Storm 20W strengthens and continues to
move west of the Marianas. Additional rainfall amounts of 2 to 4
inches remain a possibility as bands of showers to the east and
southeast of the islands move over the islands. This rainfall could
lead to flooding and/or flash flooding in poor drainage areas. Rip
currents will be life threatening until Friday afternoon.

South winds of 20 to 30 mph with gusts to 40 mph are now occurring
over Guam and Rota and will continue to increase over the next few
hours. Gusts to 39 mph have been reported at Andersen AFB. Damaging
winds of 35 to 45 mph, gusting to 55 mph, are expected later this
evening. East winds of 35 to 45 mph with gusts to 55 mph will
continue for Tinian and Saipan, while shifting toward the south over
the next few hours. Winds will begin to subside late tonight or early
Friday morning.

Open water seas between 10 and 13 feet are likely as TS 20W
continues to strengthen. Storm surge of 1 to 3 feet along east to
south facing reefs is possible with this storm, with a total surf
height of 9 feet possible. This would result in minor inundation of
up to 1 foot.

.PRECAUTIONARY/PREPAREDNESS ACTIONS...

For those under a warning...preparations for the protection of life
and property should be complete.

For interests at ports...docks...and marinas...prescribed
preparations according to your emergency operations plan for
tropical cyclones should be complete. If you live on a boat...make
final preparations for securing your craft before leaving it.

Regarding any coastal waters under a warning...small craft should
remain in port and well secured.

For additional precautionary and preparedness information...
Please refer to the detailed recommendations relative to your
location as further described by your local emergency management.

&&

.NEXT UPDATE...
The next local statement will be issued by the National Weather
Service in Tiyan around 3 AM...or sooner if conditions warrant.

GUZ001>004-231900-
/O.CON.PGUM.TR.W.4020.000000T0000Z-000000T0000Z/
Guam-Rota-Tinian-Saipan-
842 PM ChST Thu Sep 23 2021

...TROPICAL STORM WARNING REMAINS IN EFFECT...

...PRECAUTIONARY/PREPAREDNESS ACTIONS...
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tropical storm conditions are occurring. Remain alert and stay
inside. Final preparations to protect life and property should be
complete. Gusty winds and heavy rains will make outside activities
dangerous. Loose outdoor objects which can be blown around should
already be secured. Canopies should already be removed and/or well
secured.

Listen for possible flood warnings.

&&

...Winds...
South winds of 20 to 30 mph with gusts to 40 mph are now occurring
over Guam and Rota and will continue to increase over the next few
hours. Gusts to 39 mph have been reported at Andersen AFB. Damaging
winds of 35 to 45 mph, gusting to 55 mph, are expected tonight.
East winds of 35 to 45 mph with gusts to 55 mph will continue for
Tinian and Saipan, while shifting toward the south over the next few
hours. Winds will begin to subside early Friday morning. Tropical
storm force winds were reported over portions of Saipan, with 43 mph
winds and gusts to 55 mph at Wireless Ridge. Minor to moderate damage
is likely to canopies, awnings, or carports. Poorly constructed
homes may sustain minor wall damage and partial roof removal. Some
loose outdoor items will be tossed around and may cause additional
damage. A few power lines may be knocked down resulting in isolated
power outages.

...Seas...
Latest altimetry data indicates seas of 8 to 11 feet with max heights
around 15 feet are east of the waters. Combined seas of 10 to 14
feet are expected to continue for the next several hours. Seas will
begin to subside later tonight as 20W continues to move west-
northwestward, away from the Marianas.

...Storm surge and storm tide...
Storm surge of 1 to 3 feet along east to south facing reefs is
expected with this storm, with a total surf height of 9 feet. This
would result in minor inundation of up to 1 foot.

...Inland flooding...
A Flood Watch is in effect for the entire area. See latest forecast
for latest information. Listen for possible flood warnings for your
location...and be ready to act if flooding rains occur.

$$

Kleeschulte
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