Guam, 2002

Funnel Cloud in Guam, September 14, 2002

September 14, 2002 · NWS GUA · 1 event in 1 county or zone

On the 14th a Funnel cloud was observed west of the Saipan International Airport between 1513 and 1532

The toll

Deaths
0
Injuries
0
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.

On the 14th a Funnel cloud was observed west of the Saipan International Airport between 1513 and 1532

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 Sep 14, 4:01 AM SST, 11 hours 12 minutes earlier.

Area forecast discussion, Sep 14, 4:01 AM SST, 11 hours 12 minutes before
AREA SYNOPTIC DISCUSSION
NATIONAL WEATHER SERVICE TIYAN GU
1 AM GUAM LST SUN SEP 15 2002

WESTERN NORTH PACIFIC BETWEEN EQUATOR AND 25N FROM 130E TO 180.

A MONSOON TROUGH EXTENDS FROM 12N130E TO NEAR THE MARIANAS AT
14N145E THEN SOUTHEASTWARD TO A CIRCULATION NEAR 11N164E AND THEN TO
7N175E. LOW-LEVEL CONVERGENCE ASSOCIATED WITH THE MONSOON TROUGH IS
GENERATING SHOWERS AND THUNDERSTORMS IN TWO AREAS. THE FIRST
AREA...CONTAINING SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS...IS
BETWEEN 5N AND 21N FROM 130E TO 150E. THIS AREA INCLUDES THE
REPUBLIC OF PALAU...YAP STATE AND THE MARIANA ISLANDS. THE SECOND
AREA...CONTAINING NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS...IS
BETWEEN 4N AND 12N FROM 153E TO 165E. THIS AREA INCLUDES CHUUK...
POHNPEI AND KOSRAE STATES.

A SURFACE TROUGH OF LOW PRESSURE FROM 14N166E TO 23N168E...COMBINED
WITH FAVORABLE WINDS EAST OF AN UPPER-LEVEL LOW CENTERED NEAR
24N160E...ARE GENERATING SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS BETWEEN 14N AND 20N FROM 162E TO 170E...AND BETWEEN
20N AND 25N FROM 170E TO 176E. THIS AREA INCLUDES WAKE ISLAND.

LOW LEVEL CONVERGENCE AT THE EASTERN END OF THE MONSOON TROUGH IS
PRODUCING SCATTERED SHOWERS BETWEEN 8N AND 13N FROM 176E TO 180E.

Event by event

1 funnel cloud. Local standard time, as filed.

Funnel Cloud, Saipan

When
September 14, 3:13 PM SST to 3:32 PM SST
Where
Saipan County, Saipan Intl Airport
Reported by
TRAINED SPOTTER

What these are

Funnel Cloud
A rotating column of cloud extending from a thunderstorm that did not reach the ground.

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

The same day elsewhere

More

Every storm in Guam in 2002Every state in 2002This day in weather historyWarnings in Guam, September 2002

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: 5325263.