395
WGMY50 PGUM 121649
FFWGUM
GUC010-121730-
/O.NEW.PGUM.FF.W.0006.260412T1649Z-260412T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TIYAN GU
249 AM CHST MON APR 13 2026
THE NATIONAL WEATHER SERVICE IN TIYAN HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN GUAM...
* UNTIL 330 AM CHST.
* AT 249 AM CHST, DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
HEAVY RAIN FALLING ACROSS THE WARNED AREA. BETWEEN 0.6 AND 1.4
INCHES OF RAIN HAVE FALLEN. THE EXPECTED RAINFALL RATE IS 1 TO 2.5
INCHES IN 1 HOUR. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2.4 INCHES
ARE POSSIBLE IN THE WARNED AREA. FLASH FLOODING IS ONGOING OR
EXPECTED TO BEGIN SHORTLY.
HAZARD...FLASH FLOODING CAUSED BY HEAVY RAIN.
SOURCE...RADAR AND AUTOMATED GAUGES.
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...
CHALAN PAGO-ORDOT, YONA, HAGATNA HEIGHTS, 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.
BE AWARE OF YOUR SURROUNDINGS AND DO NOT DRIVE ON FLOODED ROADS.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.
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 1342 14479 1336 14480 1327 14478 1322 14474
1322 14471 1322 14469 1321 14467 1322 14466
1324 14465 1326 14464 1327 14464 1333 14461
1337 14461 1340 14463 1343 14460 1345 14459
1347 14461 1348 14462 1349 14465 1349 14475
1344 14478 1325 14468 1338 14465
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL RATE...1-2.5 INCHES IN 1 HOUR
PD
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