022  
WGMY80 PGUM 160137  
FLSGUM  
 
FLOOD ADVISORY  
NATIONAL WEATHER SERVICE TIYAN GU  
1137 AM CHST TUE SEP 16 2025  
 
GUC010-160215-  
/O.NEW.PGUM.FA.Y.0030.250916T0137Z-250916T0215Z/  
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/  
GUAM-  
1137 AM CHST TUE SEP 16 2025  
   
..FLOOD ADVISORY IN EFFECT UNTIL 1215 PM CHST THIS AFTERNOON
 
 
* WHAT...FLOODING CAUSED BY EXCESSIVE RAINFALL IS EXPECTED.  
 
* WHERE...GUAM.  
 
* WHEN...UNTIL 1215 PM CHST.  
 
* IMPACTS...MINOR FLOODING IN LOW-LYING AND POOR DRAINAGE AREAS.  
WATER OVER ROADWAYS. OVERFLOWING POOR DRAINAGE AREAS.  
 
* ADDITIONAL DETAILS...  
- AT 1137 AM CHST, DOPPLER RADAR INDICATED HEAVY RAIN. MINOR  
FLOODING IS ONGOING OR EXPECTED TO BEGIN SHORTLY IN THE  
ADVISORY AREA.  
- ADDITIONAL RAINFALL AMOUNTS OF 0.4 TO 1.6 INCHES ARE EXPECTED  
OVER THE AREA. THIS ADDITIONAL RAIN WILL RESULT IN MINOR  
FLOODING.  
- SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...  
DEDEDO, TAMUNING, YIGO, MANGILAO, CHALAN PAGO-ORDOT,  
BARRIGADA, YONA, HAGATNA HEIGHTS, ANDERSEN AFB, TALOFOFO,  
MONGMONG-TOTO-MAITE, SINAJANA, INARAJAN, ASAN, MERIZO, PITI,  
SANTA RITA AND UMATAC.  
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
TURN AROUND, DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD  
DEATHS OCCUR IN VEHICLES.  
 
BE AWARE OF YOUR SURROUNDINGS AND DO NOT DRIVE ON FLOODED ROADS.  
 
PLEASE REPORT OBSERVED FLOODING TO LOCAL EMERGENCY SERVICES OR LAW  
ENFORCEMENT AND REQUEST THEY PASS THIS INFORMATION TO THE NATIONAL  
WEATHER SERVICE WHEN YOU CAN DO SO SAFELY.  
 

 
 
LAT...LON 1338 14465 1340 14466 1341 14466 1342 14466  
1345 14461 1344 14466 1346 14466 1346 14464  
1348 14465 1347 14470 1348 14476 1348 14477  
1349 14477 1351 14478 1351 14480 1352 14480  
1354 14480 1358 14483 1359 14483 1362 14483  
1363 14484 1364 14485 1366 14486 1361 14491  
1360 14496 1352 14493 1340 14478 1328 14477  
1325 14472 1325 14470 1325 14469 1325 14468  
1324 14465 1327 14466 1336 14465 1337 14464  
1337 14465  
 

 
 
PD  
 
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