000  
WGMY80 PGUM 180930  
FLSGUM  
 
FLOOD ADVISORY  
NATIONAL WEATHER SERVICE TIYAN GU  
730 PM CHST SUN OCT 18 2026  
 
GUC010-181030-  
/O.NEW.PGUM.FA.Y.0117.261018T0930Z-261018T1030Z/  
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/  
GUAM-  
730 PM CHST SUN OCT 18 2026  
   
..FLOOD ADVISORY IN EFFECT UNTIL 830 PM CHST THIS EVENING  
 
* WHAT...URBAN AREA AND SMALL STREAM FLOODING CAUSED BY EXCESSIVE  
RAINFALL IS EXPECTED.  
 
* WHERE...GUAM...  
 
* WHEN...UNTIL 830 PM CHST.  
 
* IMPACTS...MINOR FLOODING IN LOW-LYING AND POOR DRAINAGE AREAS.  
 
* ADDITIONAL DETAILS...  
- AT 730 PM CHST, DOPPLER RADAR INDICATED HEAVY RAIN. THIS WILL  
CAUSE URBAN AND SMALL STREAM 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 ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE  
DANGERS OF FLOODING.  
 
 
 
LAT...LON 1344 14459 1346 14460 1348 14462 1350 14475  
1353 14478 1366 14483 1368 14484 1368 14487  
1363 14491 1362 14497 1359 14497 1351 14494  
1341 14481 1327 14479 1323 14476 1321 14464  
1324 14463 1327 14465 1333 14461 1340 14463  
 
 
 
CO  
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