WTPQ33 PGUM 240125 RRA

TCPPQ3



BULLETIN

TROPICAL STORM 27W ADVISORY NUMBER 17A

NATIONAL WEATHER SERVICE TIYAN GU WP272017

1125 AM CHST TUE OCT 24 2017



...TROPICAL STORM 27W INTENSIFYING SLIGHTLY...



CHANGES WITH THIS ADVISORY

---------------------------

NONE.



WATCHES AND WARNINGS

--------------------------

A TROPICAL STORM WATCH REMAINS IN EFFECT FOR GUAM...ROTA AND THE

SURROUNDING COASTAL WATERS IN THE MARIANA ISLANDS.



SUMMARY OF 1000 AM CHST...0000 UTC...INFORMATION

------------------------------------------------

LOCATION...10.8N 143.2E



ABOUT  205 MILES SOUTH-SOUTHWEST OF GUAM

ABOUT  260 MILES SOUTH-SOUTHWEST OF ROTA

ABOUT  325 MILES SOUTH-SOUTHWEST OF TINIAN

ABOUT  335 MILES SOUTH-SOUTHWEST OF SAIPAN

ABOUT  185 MILES NORTH-NORTHWEST OF FARAULEP

ABOUT  200 MILES EAST-NORTHEAST OF FAIS

ABOUT  255 MILES EAST-NORTHEAST OF ULITHI



MAXIMUM SUSTAINED WINDS...45 MPH

PRESENT MOVEMENT...WEST-NORTHWEST...300 DEGREES AT 13 MPH.



DISCUSSION AND OUTLOOK

----------------------

AT 1000 AM CHST...0000 UTC...THE POORLY-DEFINED CENTER OF TROPICAL

STORM 27W WAS LOCATED NEAR LATITUDE 10.9 DEGREES NORTH AND LONGITUDE

143.2 DEGREES EAST...MOVING NORTHWEST AT 13 MPH. TROPICAL STORM 27W

IS EXPECTED TO TURN TO A NORTHWEST TRACK TODAY THROUGH WEDNESDAY

WITH AN INCREASE IN FORWARD SPEED. TROPICAL STORM 27W IS NEAR ITS

CLOSEST APPROACH TO GUAM, AND WILL BE MOVING INTO THE PHILIPPINE

SEA TONIGHT AND WEDNESDAY.



MAXIMUM SUSTAINED WINDS HAVE INCREASED TO 45 MPH. 27W IS FORECAST

TO INTENSIFY SLOWLY THE NEXT FEW DAYS. TROPICAL STORM FORCE WINDS

EXTEND OUT UP TO 175 MILES FROM THE CENTER.



THERE IS STILL CONSIDERABLE UNCERTAINTY ON THE EXACT TRACK AND