GUAM County, Guam
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Watch/Warnings
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The National Weather Service's Watches, Warnings and Advisories by state counties include: Thunderstorm, Tornado, Flood, Flash Flood, Winter Storm, High Wind, Gale, Small Aircraft, High Surf, Marine, Heat, Air Quality, Ashfall, Hazardous, and Special Statements.
Weather Alerts: GUAM County, Guam
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Aviation Weather Warning
GUZ001-300900-

AIRPORT WEATHER WARNING FOR GUAM INTERNATIONAL AIRPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
930 AM CHST WED JUL 30 2014

A HIGH WIND ADVISORY REMAINS IN EFFECT UNTIL 700 PM WEDNESDAY.

WINDS WITHIN 5 NM OF THE AIRPORT WILL BE FROM THE WEST OR 280
DEGREES AT 30 TO 40 KT WITH GUSTS TO 55 KT BECOMING WEST- SOUTHWEST
OR 240 DEGREES AT 35 TO 45 KT WITH GUSTS TO 60 KT AROUND 100
PM...THEN BECOMING SOUTHWEST OR 220 DEGREES AT 20 TO 30 KT WITH
GUSTS TO 40 KT AROUND 500 PM. THE STRONGEST GUSTS WILL BE ASSOCIATED
WITH HEAVY SHOWERS.

$$

Flash Flood Warning
GUC010-100-300600-
/O.NEW.PGUM.FF.W.0004.140730T0315Z-140730T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TIYAN GU
115 PM CHST WED JUL 30 2014

THE NATIONAL WEATHER SERVICE IN TIYAN GUAM HAS ISSUED A

* FLASH FLOOD WARNING FOR THE ISLANDS OF GUAM AND ROTA...

* UNTIL 400 PM CHST.

* AT 100 PM CHST...RAIN CONTINUES TO ACCUMULATE OVER GUAM AND ROTA
AS TROPICAL STORM HALONG PASSES OVER THE MARIANAS. RAINFALL OF 7
TO 9 INCHES HAS ALREADY FALLEN ON GUAM AND 2 TO 4 INCHES HAS
ALREADY FALLEN ON ROTA DURING THE PAST 24 HOURS. ADDITIONAL
TORRENTIAL RAINFALL OF 4 TO 6 INCHES IS LIKELY THROUGH THE EARLY
AFTERNOON ACROSS GUAM. 2 TO 4 INCHES OF ADDITIONAL RAINFALL IS
POSSIBLE ON ROTA. VIRTUALLY ALL OF THE FUTURE RAINFALL THIS
AFTERNOON WILL BE RUNOFF CONTRIBUTING TO MORE FLASH FLOODING
ACROSS GUAM AND ROTA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.

DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.

&&

RUNOFF FROM THIS STORM MAY ALSO CAUSE ROCK AND MUDSLIDES IN STEEP
TERRAIN ESPECIALLY ACROSS SOUTHERN GUAM.

THIS WARNING MAY NEED TO BE EXTENDED BEYOND 400 PM CHST IF FLASH
FLOODING PERSISTS.

LAT...LON 1425 14532 1401 14525 1375 14492 1356 14503
1327 14488 1318 14466 1345 14457 1393 14503
1428 14514

$$

Flash Flood Watch
GUZ001>004-290815-
/X.NEW.PGUM.FF.A.0001.140729T0003Z-140731T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GUAM-ROTA-TINIAN-SAIPAN-
1003 AM CHST TUE JUL 29 2014

...FLASH FLOOD WATCH IN EFFECT THROUGH THURSDAY MORNING...

THE NATIONAL WEATHER SERVICE IN TIYAN HAS ISSUED A

* FLASH FLOOD WATCH FOR GUAM...ROTA...TINIAN AND SAIPAN.

* NOW THROUGH THURSDAY MORNING.

* RAINFALL OF 3 TO 5 INCHES ARE PROBABLE BY NOON WEDNESDAY.

* STAY AWAY FROM FLOODED ROADS AND PAY ATTENTION TO STREAM AND
RIVER LEVELS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

High Surf Advisory
GUZ001>004-300100-
/X.CON.PGUM.SU.Y.0018.000000T0000Z-140802T2000Z/
GUAM-ROTA-TINIAN-SAIPAN-
1056 PM CHST TUE JUL 29 2014

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM CHST SUNDAY...

A HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM CHST SUNDAY...
BUT HAS BEEN SUPERCEDED BY TROPICAL CYCLONE WARNINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AVOID VENTURING NEAR EXPOSED REEFS AND BEACHES...ESPECIALLY THOSE
ALONG ALL REEFS AS RIP CURRENTS ARE LIFE THREATENING. STAY OUT OF
THE WATER.

&&

$$

Tropical Storm Warning
GUZ001-300830-
/X.CON.PGUM.TR.W.0001.000000T0000Z-000000T0000Z/
/X.CON.PGUM.TY.A.0001.000000T0000Z-000000T0000Z/
GUAM-
919 AM CHST WED JUL 30 2014

...TROPICAL STORM WARNING REMAINS IN EFFECT...
...TYPHOON WATCH REMAINS IN EFFECT...

...PRECAUTIONARY/PREPAREDNESS ACTIONS...
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TROPICAL STORM CONDITIONS ARE ALREADY OCCURRING. GUAM WAS PLACED
IN CONDITION OF READINESS 1 AT 800 AM. ALL EVACUEES SHOULD QUICKLY
ARRIVE TO THEIR DESIGNATED SHELTER. EVERYONE SHOULD REMAIN ALERT
AND MOVE INSIDE. SHELTERS OPENED ON GUAM AT 500 AM THIS MORNING,
FOR NORTHERN RESIDENTS...MACHANAONAO ELEMENTARY...ASTUMBO
ELEMENTARY AND MARIA ULOA ELEMENTARY WILL BE OPEN. FOR CENTRAL
RESIDENTS...GEORGE WASHINGTON HIGH SCHOOL WILL BE OPEN. FOR
SOUTHERN RESIDENTS...TALOFOFO ELEMENTARY AND HARRY S TRUMAN
ELEMENTARY WILL BE OPEN. BUSES WILL ALSO BE AVAILABLE FOR THOSE
THAT NEED TRANSPORTATION.

LISTEN FOR POSSIBLE FLOOD WARNINGS. FLOODING HAS ALREADY BEEN
REPORTED FOR MANY LOCATIONS IN CENTRAL AND NORTHERN GUAM.

&&

...WINDS...
SUSTAINED STRONG TROPICAL STORM FORCE WINDS ARE NOW OCCURRING.
MAXIMUM WINDS OF 50 TO 70 MPH WITH GUSTS TO 85 MPH ARE EXPECTED TO
CONTINUE FOR MOST OF THE DAY AS THE CENTER REACHES IT CLOSEST
APPROACH AND ALONG ITS EASTERN PERIPHERALS . WINDS ARE NOT
FORECAST TO FALL BELOW TROPICAL STORM FORCE UNTIL LATE TONIGHT.

...STORM SURGE AND STORM TIDE...
WESTERN SHORES AND REEFS OF GUAM COULD SEE INUNDATION OF 1 TO 3 FEET
...ESPECIALLY NEAR HIGH TIDE AT 9 AM TODAY OR 10 PM TONIGHT.
HAZARDOUS SURF OF 10 TO 20 FEET ON ALL EXPOSURES IS POSSIBLE AS
HALONG PASSES BY.

...OTHER STORM EFFECTS...
GUAM HAS RECEIVED 5.33 INCHES OF RAIN OVER THE PAST 24 HOURS. AN
ADDITIONAL 3 TO 7 INCHES IS POSSIBLE THROUGH THURSDAY EVENING.

$$

Typhoon Watch
GUZ001-300830-
/X.CON.PGUM.TR.W.0001.000000T0000Z-000000T0000Z/
/X.CON.PGUM.TY.A.0001.000000T0000Z-000000T0000Z/
GUAM-
919 AM CHST WED JUL 30 2014

...TROPICAL STORM WARNING REMAINS IN EFFECT...
...TYPHOON WATCH REMAINS IN EFFECT...

...PRECAUTIONARY/PREPAREDNESS ACTIONS...
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TROPICAL STORM CONDITIONS ARE ALREADY OCCURRING. GUAM WAS PLACED
IN CONDITION OF READINESS 1 AT 800 AM. ALL EVACUEES SHOULD QUICKLY
ARRIVE TO THEIR DESIGNATED SHELTER. EVERYONE SHOULD REMAIN ALERT
AND MOVE INSIDE. SHELTERS OPENED ON GUAM AT 500 AM THIS MORNING,
FOR NORTHERN RESIDENTS...MACHANAONAO ELEMENTARY...ASTUMBO
ELEMENTARY AND MARIA ULOA ELEMENTARY WILL BE OPEN. FOR CENTRAL
RESIDENTS...GEORGE WASHINGTON HIGH SCHOOL WILL BE OPEN. FOR
SOUTHERN RESIDENTS...TALOFOFO ELEMENTARY AND HARRY S TRUMAN
ELEMENTARY WILL BE OPEN. BUSES WILL ALSO BE AVAILABLE FOR THOSE
THAT NEED TRANSPORTATION.

LISTEN FOR POSSIBLE FLOOD WARNINGS. FLOODING HAS ALREADY BEEN
REPORTED FOR MANY LOCATIONS IN CENTRAL AND NORTHERN GUAM.

&&

...WINDS...
SUSTAINED STRONG TROPICAL STORM FORCE WINDS ARE NOW OCCURRING.
MAXIMUM WINDS OF 50 TO 70 MPH WITH GUSTS TO 85 MPH ARE EXPECTED TO
CONTINUE FOR MOST OF THE DAY AS THE CENTER REACHES IT CLOSEST
APPROACH AND ALONG ITS EASTERN PERIPHERALS . WINDS ARE NOT
FORECAST TO FALL BELOW TROPICAL STORM FORCE UNTIL LATE TONIGHT.

...STORM SURGE AND STORM TIDE...
WESTERN SHORES AND REEFS OF GUAM COULD SEE INUNDATION OF 1 TO 3 FEET
...ESPECIALLY NEAR HIGH TIDE AT 9 AM TODAY OR 10 PM TONIGHT.
HAZARDOUS SURF OF 10 TO 20 FEET ON ALL EXPOSURES IS POSSIBLE AS
HALONG PASSES BY.

...OTHER STORM EFFECTS...
GUAM HAS RECEIVED 5.33 INCHES OF RAIN OVER THE PAST 24 HOURS. AN
ADDITIONAL 3 TO 7 INCHES IS POSSIBLE THROUGH THURSDAY EVENING.

$$

National Weather Service

Providing "weather, water cycle, and climate forecasts and warnings for the United States, its territories, adjacent waters and ocean areas, for the protection of life and property and the enhancement of the national economy."
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