217 WGMY50 PGUM 141942 FFWGUM MPC110-120-142130- /O.NEW.PGUM.FF.W.0011.260414T1942Z-260414T2130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Tiyan GU 542 AM ChST Wed Apr 15 2026 The National Weather Service in Tiyan has issued a * Flash Flood Warning for... Saipan... Tinian... * Until 730 AM ChST. * At 542 AM ChST, satellite estimates indicate heavy rain across the warned area. The expected rainfall rate is 1 to 3 inches in 1 hour. Additional rainfall amounts of 3 to 6 inches are possible in the warned area. Flash flooding is ongoing. HAZARD...Flash flooding caused by heavy rain. SOURCE...Satellite estimates. IMPACT...Flash flooding of small creeks and streams, urban areas, and streets as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Garapan, Dandan, China Town, Tanapag, As Mahetog, Koblerville, San Jose (Tinian Municipality), Chalan Kanoa I, San Antonio, Chalan Kanoa II, Chalan Kanoa III, San Roque, Kagman, Chalan Kanoa IV, Kagman III, Gualo Rai, Afetnas, Chalan Piao, Fananganan and Chalan Laulau. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 1524 14569 1526 14569 1527 14571 1526 14573 1531 14580 1531 14582 1530 14583 1528 14585 1526 14585 1524 14585 1520 14580 1516 14582 1514 14581 1513 14580 1513 14578 1509 14578 1507 14576 1507 14574 1508 14570 1510 14567 1512 14567 1522 14569 1513 14563 1513 14564 1512 14566 1511 14567 1504 14567 1502 14569 1500 14570 1493 14568 1490 14565 1490 14563 1491 14561 1501 14556 1502 14556 1503 14556 1512 14562 1498 14561 1482 14553 1483 14552 1484 14551 1485 14551 1486 14552 1487 14552 1488 14553 1489 14557 1489 14558 1489 14559 1488 14559 1487 14560 1486 14560 1484 14559 1483 14559 1482 14558 1482 14557 1482 14555 1484 14555 FLASH FLOOD...SATELLITE INDICATED EXPECTED RAINFALL RATE...1-3 INCHES IN 1 HOUR $$ Williams  294 WGMY50 PGUM 141947 FFWGUM GUC010-MPC100-142130- /O.NEW.PGUM.FF.W.0012.260414T1947Z-260414T2130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Tiyan GU 547 AM ChST Wed Apr 15 2026 The National Weather Service in Tiyan has issued a * Flash Flood Warning for... Guam... Rota... * Until 730 AM ChST. * At 547 AM ChST, An NWS employee reported heavy rain across the warned area with over a foot of water covering some roadways. Between 4 and 10 inches of rain have fallen over the last 24 hours. The expected rainfall rate is 1 to 2 inches in 1 hour. Additional rainfall amounts of 2 to 4 inches are possible in the warned area. Flash flooding is already occurring. HAZARD...Flash flooding caused by heavy rain. SOURCE...NWS Employee reported. IMPACT...Flash flooding of small creeks and streams, urban areas, and streets as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Dededo, Tamuning, Yigo, Mangilao, Chalan Pago-Ordot, Barrigada, Yona, Hagatna Heights, Andersen AFB, Talofofo, Mongmong-Toto-Maite, Sinajana, Inarajan, Asan, Merizo, Piti, Santa Rita, Umatac, Sinapalo and Songsong. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 1416 14512 1419 14515 1423 14524 1422 14530 1420 14531 1419 14531 1414 14530 1414 14529 1413 14525 1410 14523 1409 14522 1408 14517 1409 14516 1410 14515 1409 14513 1409 14511 1411 14510 1413 14510 1415 14514 1346 14460 1348 14462 1350 14475 1352 14476 1354 14478 1366 14483 1368 14485 1368 14487 1363 14492 1362 14497 1361 14497 1359 14498 1351 14494 1341 14480 1326 14478 1322 14474 1322 14469 1321 14465 1321 14463 1324 14462 1327 14464 1334 14461 1337 14461 1340 14463 1344 14460 1325 14468 1338 14465 FLASH FLOOD...OBSERVED EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR $$ Williams