686
WGMY60 PGUM 110424
FFAGUM
URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE TIYAN GU
224 PM CHST WED MAR 11 2026
MPZ002-003-112030-
/O.NEW.PGUM.FA.A.0002.260311T0424Z-260313T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TINIAN-SAIPAN-
224 PM CHST WED MAR 11 2026
..FLOOD WATCH IN EFFECT THROUGH FRIDAY AFTERNOON
* WHAT...FLASH FLOODING CAUSED BY EXCESSIVE RAINFALL IS POSSIBLE.
* WHERE...SAIPAN AND TINIAN.
* WHEN...THROUGH FRIDAY AFTERNOON.
* IMPACTS...EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS,
CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.
FLOODING MAY OCCUR IN POOR DRAINAGE AND URBAN AREAS. LOW-WATER
CROSSINGS MAY BE FLOODED.
* ADDITIONAL DETAILS...
- NEWLY FORMED TROPICAL DEPRESSION NURI (03W) IS CURRENTLY
NORTHWEST OF
YAP, WHICH IS THEN EXPECTED TO GRAZE THE MARIANAS ALONG THE
NORTHWESTERN COASTAL WATERS OVER THE NEXT FEW DAYS AS IT
HEADS NORTHEAST AND INTERACTS WITH REMNANTS OF AN OLD FRONTAL
SYSTEM. DURING PASSAGE, IT COULD BRING SIGNIFICANT SHOWERS
ACROSS THE MARIANAS, ESPECIALLY TO TINIAN AND SAIPAN, OR JUST
WEST OF THE ISLANDS. DUE TO THE UNSETTLED PATTERN FORMED
BETWEEN NURI AND FORMER INVEST 96W TO THE NORTHEAST OF THE
MARIANAS, LINES OF INTENSE SHOWERS HAVE ALREADY BEGUN FORMING
UPSTREAM FROM NURI, WHICH ARE EXPECTED TO BRING FLASH
FLOODING RISK TO TINIAN AND SAIPAN AS EARLY AS TONIGHT. AT
THIS TIME, 5 TO 8 INCHES OF RAIN IS POSSIBLE OVER TINIAN AND
SAIPAN BETWEEN TONIGHT AND FRIDAY AFTERNOON, MAINLY IF 03W
TREKS CLOSER TO THE ISLANDS. HIGH UNCERTAINTY REMAINS
REGARDING RAINFALL TOTALS DUE TO THE UNCERTAINTY IN TC
MOTION.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.
EM
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