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: County, Guam
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Aviation Weather Warning
GUZ001-042200-

AIRPORT WEATHER WARNING FOR GUAM INTERNATIONAL AIRPORT
NATIONAL WEATHER SERVICE TIYAN GUAM
1000 PM CHST SAT JUN 4 2015

A THUNDERSTORM ADVISORY IS NOW IN EFFECT FOR THE GUAM INTERNATIONAL
AIRPORT UNTIL 800 AM SUNDAY MORNING. THUNDERSTORMS ARE EXPECTED
WITHIN 20 NAUTICAL MILES OF THE AIRPORT.

BE ALERT AND TAKE PRECAUTIONS AS REQUIRED.

$$

Flash Flood Watch
GUZ001>004-042045-
/O.NEW.PGUM.FF.A.0002.150704T0545Z-150706T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GUAM-ROTA-TINIAN-SAIPAN-
345 PM CHST SAT JUL 4 2015

...FLASH FLOOD WATCH IN EFFECT THROUGH MONDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN TIYAN HAS ISSUED A

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

* THROUGH MONDAY AFTERNOON

* TROPICAL STORM CHAN-HOM MAY BRING 6 INCHES OR MORE OF RAIN TO
THE MARIANAS TONIGHT THROUGH MONDAY.

* ROADS IN POOR DRAINAGE AREAS COULD BECOME IMPASSABLE. HOUSES
IN LOW-LYING AREAS AND CLOSE TO STREAMS AND RIVERS COULD START
TAKING ON WATER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED. IF ANY STORM DRAINS NEAR
YOU ARE CLOGGED WITH DEBRIS...CLEAN THEM OUT TO MINIMIZE THE
IMPACTS OF ANY FLOODING. IF LIVE NEAR STREAMS AND RIVERS...PAY
CLOSE ATTENTION TO THE WATER LEVELS.

&&

$$

High Surf Advisory
GUZ001-042100-
/O.NEW.PGUM.SU.Y.0025.150704T1251Z-150706T0800Z/
GUAM-
1051 PM CHST SAT JUL 4 2015

...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM CHST MONDAY...

THE NATIONAL WEATHER SERVICE IN TIYAN HAS ISSUED A HIGH SURF
ADVISORY...WHICH IS IN EFFECT UNTIL 6 PM CHST MONDAY.

EXPECT HAZARDOUS SURF OF 10 TO 12 FEET ALONG EAST FACING REEFS
...8 TO 10 FEET ALONG SOUTH AND WEST FACING REEFS AND 6 TO 9
FEET ALONG NORTH FACING REEFS THROUGH MONDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN
THE ADVISORY AREA...PRODUCING LOCALIZED BEACH EROSION AND
DANGEROUS SWIMMING CONDITIONS.

&&

$$

Typhoon Watch
GUZ001-PMZ151-042000-
/O.CON.PGUM.TY.A.0003.000000T0000Z-000000T0000Z/
GUAM-GUAM COASTAL WATERS-
1143 PM CHST SAT JUL 4 2015

...TYPHOON WATCH REMAINS IN EFFECT...

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

CONTINUE PREPARATIONS FOR THE POSSIBILITY OF TROPICAL STORM CONDITIONS
IF CHAN-HOM'S TRACK CHANGES. LISTEN FOR UPDATED FORECASTS AND
STATEMENTS AND POSSIBLE WARNINGS.

&&

...WINDS AND SEAS...
TROPICAL STORM FORCE WINDS ARE POSSIBLE SUNDAY AND SUNDAY NIGHT.
WINDS WILL SUBSIDE MONDAY.

SEAS OF 10 TO 12 FEET WILL BUILD AS CHAN-HOM NEARS AND COULD REACH UP
TO 15 FEET SUNDAY AFTERNOON AND EVENING AS CHAN-HOM PASSES.

...STORM SURGE AND STORM TIDE...
HAZARDOUS SURF OF 10 TO 12 FEET ON EAST FACING REEFS...8 TO
10 FEET ON SOUTH AND WEST FACING REEFS AND 6 TO 9 FEET ON NORTH
FACING REEFS THROUGH MONDAY.

...FLOODING... A FLASH FLOOD WATCH IS IN EFFECT. RAINFALL OF 6
INCHES OR MORE IS POSSIBLE THROUGH SUNDAY NIGHT.

$$

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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