Name: High Surf in Guam, July 9, 2006
Start: 2006-07-09T13:05
End: 2006-07-09T14:00
Location: Guam

The toll

Deaths: 1
Injuries: 1
Property damage: None recorded
Crop damage: None recorded
Events: 1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS GUA wrote it up.

A 19-year-old man and a 15-year-old boy were at the cliff side at Oka Point in Tamuning, Guam, when large waves swept them into rough waters. The man was rescued an hour later after sustaining cuts and scrapes, but the boy drowned before rescuers could reach him.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS GUA wrote its last area forecast discussion before the first event at Jul 9, 5:18 AM SST, 7 hours 47 minutes earlier.

Area forecast discussion, Jul 9, 5:18 AM SST, 7 hours 47 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TIYAN GU
218 AM LST MON JUL 10 2006

.SYNOPSIS...
TROPICAL STORM BILIS CONTINUES TO MOVE AWAY FROM THE MARIANAS.
AFFECTS OF THE STORM ON MARIANAS WEATHER WILL RAPIDLY DIMINISH
TODAY AND SHOULD BE NEGLIGIBLE THEREAFTER. GENTLE TO MODERATE TRADE
WINDS AND ISOLATED SHOWERS WILL GRADUALLY BUILD BACK INTO THE AREA
STARTING TONIGHT.

&&

.DISCUSSION...
GFS75 MODEL BRINGS TRADE WINDS AND JUST ISOLATED SHOWERS BACK IN
AFTER TROPICAL STORM BILIS DEPARTS THE LOCAL AREA. HAVE BEEN
HESITANT TO USE PREVIOUS RUNS AS THEY SEEMED TOO SUBJECT TO
SPINNING UP SPURIOUS TROPICAL CYCLONES DUE TO CONVECTIVE
FEEDBACK. THIS REMAINS A PROBLEM DURING PARTICULARLY ACTIVE
PERIODS. THIS RUN...HOWEVER...SEEMS MUCH LESS SUSPICIOUS AT LEAST
IN OUR LOCAL AREA UNTIL ABOUT DAY 3. AT THIS POINT...THE 06Z RUN
SEEMS TO BE LESS CONTAMINATED. THEREFORE...WILL POPULATE WIND
GRIDS FOR DAYS 1 TO 3 FROM THE 12Z RUN AND DAYS 4 TO 5 FROM THE
06Z RUN.

&&

.MARINE...
WIND WAVES HAVE DECREASED MARKEDLY FROM THE 10 FOOT VALUES OF
YESTERDAY...AS EVIDENCED BY THE RECENT 6 FOOT VALUES FROM THE CDIP
BUOY AT YPAN. THIS BUOY IS MOST LIKELY SHELTERED FROM ANY
SOUTHWEST OR WEST SWELL GENERATED BY TROPICAL STORM BILIS. THIS
SUPPOSITION IS SUPPORTED BY THE DIRECTIONAL SPECTRUM PLOT... WHICH
SHOWS A SMALL AMOUNT OF ENERGY FROM THE SOUTH. THIS IS PROBABLY
WRAPAROUND FROM THE SOUTHWEST TO WEST SWELL. NEVERTHELESS...THE
READING FROM THE BUOY IS CLEARLY DOMINATED BY WIND WAVES. WILL USE
THE WW3 MODEL FOR SWELL AS IT LOOKS REASONABLE AND WILL USE THE
BUOY TO CALIBRATE WIND WAVE CALCULATIONS. AT FIRST GLANCE THE
SMALL CRAFT ADVISORY SHOULD BE ABLE TO COME DOWN THIS AFTERNOON OR
EVENING.

&&

.CLIMATE...
TIME-LONGITUDE SECTION OF OUTGOING LONGWAVE RADIATION FROM THE
CLIMATE DIAGNOSTIC CENTER SHOWS A POSITIVE PHASE OF THE MADDEN-JULIAN
OSCILLATION NOW PUSHING PAST US. OVER THE NEXT FEW DAYS...THE
CORRESPONDING NEGATIVE PHASE WILL ENTER OUR AREA. THIS WILL TEND
TO MAKE A THIRD TROPICAL CYCLONE IN THIS FAMILY GROUP RATHER
UNLIKELY.

&&

.TROPICAL SYSTEMS...
TROPICAL STORM BILIS REMAINS A LARGE...SOMEWHAT LOOSELY ORGANIZED
SYSTEM. ALTHOUGH THE CENTER IS ABOUT 600 MILES WEST OF THE
MARIANAS...THE OUTER RAINBANDS ARE STILL VISIBLE ON RADAR. THESE
ARE EXPECTED TO MOVE OUT OVER THE NEXT FEW HOURS. CLOUDS COULD
REMAIN AS MUCH AS 12 MORE HOURS...BUT OTHERWISE TROPICAL STORM
BILIS WILL NO LONGER HAVE ANY EFFECT ON THE LOCAL FORECAST.

&&

.GUM WATCHES/WARNINGS/ADVISORIES...
GU...HIGH SURF ADVISORY UNTIL 6 AM LST TUESDAY FOR GUZ001-GUZ002-
     GUZ003-GUZ004.

MARIANAS WATERS...SMALL CRAFT ADVISORY UNTIL 6 PM LST THIS AFTERNOON
     FOR PMZ151-PMZ152-PMZ153-PMZ154.

&&

STANKO

Event by event

1 high surf. Local standard time, as filed.

High Surf, Guam

When: July 9, 1:05 PM SST to 2:00 PM SST
Where: Guam forecast zone
Deaths: 1 direct, 0 indirect
Injuries: 1 direct, 0 indirect
Reported by: NEWSPAPER

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

Event	Date	Age	Sex	Where	Kind
High Surf, Guam	2006-07-09	15	Male	In Water	Direct

What these are

High Surf: Large waves breaking on the shore that caused damage, erosion or casualties.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Guam in 2006 Every state in 2006 This day in weather history Warnings in Guam, July 2006

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5521315.