993 

WGMY50 PGUM 170928

FFWGUM

GUC010-171730-

/O.NEW.PGUM.FF.W.0036.261017T0928Z-261017T1730Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/



BULLETIN - EAS ACTIVATION REQUESTED

Flash Flood Warning

National Weather Service Tiyan GU

728 PM ChST Sat Oct 17 2026



The National Weather Service in Tiyan has issued a



* Flash Flood Warning for...

  Guam...



* Until 330 AM ChST Sunday.



* At 728 PM ChST, Doppler radar indicated heavy rain across the

  warned area. Between 1 and 2 inches of rain have fallen and

  torrential rain will continue through the night. Flash flooding is

  ongoing or expected to begin shortly.



  HAZARD...Flash flooding caused by heavy rain.



  SOURCE...Radar indicated.



  IMPACT...Flash flooding of small creeks and streams, urban areas,

           highways, streets and underpasses as well as other poor

           drainage and low-lying areas.



* Some locations that will experience flash 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.



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



FLASH FLOOD...RADAR INDICATED



$$



CO