Guam, 2014

Hurricane in Guam, October 5 to 6, 2014

October 5 to 6, 2014 · NWS GUM · 2 events in 2 counties and zones

Typhoon Vongfong passed across the Marianas the first part of October.

The toll

Deaths
0
Injuries
0
Property damage
$200,000
Crop damage
$100,000
Events
2

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 GUM wrote it up.

Typhoon Vongfong passed across the Marianas the first part of October.

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 Guam wrote its last area forecast discussion before the first event at Oct 5, 12:42 AM UTC, 1 hour 18 minutes earlier.

Area forecast discussion, Oct 5, 12:42 AM UTC, 1 hour 18 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TIYAN GU
1042 AM CHST SUN OCT 5 2014

.MARIANAS SYNOPSIS...
WEATHER IS FAIR ACROSS THE LOCAL AREA THIS MORNING...BUT TYPHOON
VONGFONG IS 400 MILES EAST-SOUTHEAST OF GUAM AND MOVING STRAIGHT
TOWARD OUR FORECAST ZONES. SATELLITE INDICATES THAT AREAS OF
HEAVY RAIN AND GUSTY WINDS ARE ROUGHLY 120 MILES SOUTHEAST AND
MOVING NORTHWEST AT 15 TO 20 MPH.

&&

.DISCUSSION...
TYPHOON WARNINGS AND FLASH FLOOD WATCHES ARE IN EFFECT FOR THE
FORECAST ZONES...AND ALL THE MARIANAS FORECAST PRODUCTS REFLECT THE
DANGEROUS CONDITIONS EXPECTED WITH THE PASSAGE OF VONGFONG...WHICH
IS EXPECTED TO INTENSIFY AS IT MOVES TOWARD THE WEST-NORTHWEST
THE NEXT FEW DAYS. THE FORECAST TRACK OF VONGFONG TAKES IT BETWEEN
ROTA AND TINIAN MONDAY MORNING BETWEEN DAY-BREAK AND NOON. THE
MODELS ARE IN DECENT AGREEMENT...BUT THE EXACT TRACK OF VONGFONG
IS STILL SUBJECT TO MINOR CHANGES. DAMAGING WINDS AND TORRENTIAL
RAIN ARE EXPECTED TO BEGIN TONIGHT AND CONTINUE THROUGH MONDAY
ACROSS OUR FORECAST ZONES. THE HEAVY RAINS WILL LIKELY PERSIST
UNTIL WEDNESDAY AS MONSOONAL FLOW FEEDING INTO THE TYPHOON FLOWS
OVER THE FORECAST ZONES.

&&

.MARINE...
STILL EXPECT WINDS AND SEAS TO RAPIDLY BUILD TONIGHT AND MONDAY
MORNING. TROPICAL STORM TO TYPHOON FORCE WINDS WILL BE AFFECTING
THE MARINE ZONES FROM EARLY MONDAY MORNING THROUGH LATE MONDAY
EVENING. WORST CONDITIONS APPEAR TO BE IN STORE FOR ROTA. WIND
RADII APPEAR TO BE GREATEST ON THE NORTH SIDE OF VONGFONG...SO
WINDS DECREASE FASTER WITH DISTANCE ON THE SOUTH SIDE OF VONGFONG.

&&

.TROPICAL SYSTEMS...
VONGFONG CONTINUES TO INTENSIFY. LATEST SATELLITE FIX FROM NESDIS
GIVES A DVORAK 5.0...WHICH EQUATES TO 90 KT. VONGFONG DISPLAYS A
CLOUD FILLED EYE IN SATELLITE IMAGERY. LATEST FORECAST TRACK FROM
JTWC TAKES VONGFONG THROUGH THE ROTA-TINIAN CHANNEL AS A 100-KT
SYSTEM.

&&

.EASTERN MICRONESIA...
TYPHOON VONGFONG CONTINUES TO MOVE FARTHER AWAY FROM THE REGION.
CONVERGENCE EAST OF THE TYPHOON CONTINUES TO GENERATE SCATTERED
SHOWERS AND ISOLATED THUNDERSTORMS NORTH OF POHNPEI AND KOSRAE.
DRIER WEATHER IS FOUND OVER THE TWO LOCATIONS THIS MORNING. A
SURFACE TROUGH EXTENDING FROM A WEAK CIRCULATION BETWEEN KOSRAE
AND KWAJALEIN IS PRODUCING SHOWERS AND A FEW THUNDERSTORMS
NORTHEAST AND EAST OF MAJURO. MODELS DO LITTLE WITH THIS
FEATURE...GRADUALLY WASHING IT OUT VIA AN OPEN WAVE TROUGH.
ASSOCIATED WEATHER WITH THIS SYSTEM EVENTUALLY DISSIPATES AS IT
MOVES WEST. A SLIGHT CHANCE OF THUNDERSTORMS REMAINS IN THE
FORECAST THROUGH MONDAY FOR MAJURO AND MONDAY NIGHT FOR KOSRAE. A
GENERALLY DRIER PATTERN IS STILL EXPECTED FOR THE NEW WEEK ACROSS
THE REGION.

&&

.WESTERN MICRONESIA...
TYPHOON VONGFONG IS PASSING ABOUT 300 MILES NORTH OF CHUUK THIS
MORNING...CONTINUING WEST-NORTHWEST TOWARDS THE MARIANAS. IR
SATELLITE SHOWS MOST OF THE WEATHER CONFINED CLOSE TO THE CENTER
OF THE STORM ACROSS NORTHERN CHUUK STATE. FORECAST CONTINUES TO
REFLECT THE SIDING WITH A DRY BIAS BUT MAINTAINS A SLIGHT CHANCE
FOR THUNDERSTORMS. CONVERGENCE ALONG A WEAK TROUGH EXTENDING
SOUTHEAST FROM VONGFONG WILL MAINTAIN SOMEWHAT UNSETTLED
CONDITIONS THROUGH MONDAY NIGHT. DRIER TRADES ARE EXPECTED OVER
CHUUK ON TUESDAY.

THE WET MONSOON PATTERN WILL CONTINUE OVER YAP STATE AND THE
REPUBLIC OF PALAU DURING THE NEXT FEW DAYS. A SLIGHT WEAKENING IN
THIS PATTERN WILL BE SHORT LIVED AS THE MONSOON PATTERN RECEIVES
A BOOST FROM TYPHOON VONGFONG AS IT APPROACHES AND PASSES THE
MARIANAS. SCATTERED SHOWERS ARE EXPECTED THROUGH TUESDAY ON BOTH
LOCATIONS...TAPERING OFF A LITTLE ON WEDNESDAY AS VONGFONG BEGINS
TO LIFT FARTHER NORTH.

&&

.GUM WATCHES/WARNINGS/ADVISORIES...
GU...TYPHOON WARNING FOR GUZ001>005.

     FLASH FLOOD WATCH FROM LATE TONIGHT THROUGH TUESDAY MORNING FOR
     GUZ001>004.

MARIANAS WATERS...TYPHOON WARNING FOR PMZ151>154.

&&

MCELROY/M. AYDLETT/SIMPSON

Event by event

2 hurricane (typhoon). Local standard time, as filed.

Hurricane (Typhoon), Guam

When
October 5, 12:00 PM GST to October 6, 12:00 PM GST
Where
Guam forecast zone
Category
1
Property damage
$100,000
Crop damage
$50,000
Reported by
Official NWS Observations

On the 1st of October scatterometer data depicted a circulation just east of Kosrae. The circulation moved slowly northwest, being located 150 miles northeast of Pohnpei on the morning of the 3rd, became sufficiently organized to be classified as Tropical Depression 19W. Further intensification during that afternoon allowed the depression to become Tropical Storm 19W and during that evening it made it's closest approach to Pohnpei as it passed 120 miles north of the island. Most of the tropical storm force winds were found north of the tropical storm. The radius of tropical storm force winds south of the system did not extend as far as Pohnpei. No reports of damage were reported from that island.

By the 4th the system was named Tropical Storm Vongfong and further intensification allowed it to reach typhoon intensity. The typhoon passed 285 miles north of Chuuk on the morning of the 5th. This was too far to cause any ill effect on the island.

The typhoon continued its trek northeast and passed across the Marianas Islands on the 6th. During the early morning hours of the 6th...between 3 and 4 am...the eye of Typhoon Vongfong passes just north of Rota. Radar data showed that the eyewall of the typhoon probably passed over parts of this island. Brief wind shear caused some weakening of the typhoon as it passed over the Marianas. Seventy percent of the island of Rota briefly lost power. The airport at Rota was not open so unfortunately no wind data was reported. The highest wind gust observed across central Guam at the National Weather Service Office was 43 knots (49 mph), at 228 am. |Across northern Guam at Andersen Air Force Base the highest wind gust was 61 knots (70mph) at 308 am.

Across Saipan the highest wind gust was 52 knots (60 mph) at 203 am.

On Guam only minor flooding and sporadic power outages were reported across the island. Downed trees were also reported in a few areas of the island. In Yigo, four employees of the mayor helped rescue a family of 17 people from flooding in that village. the northern half of the island reported the most rain as a major rain band pushed across that area before sunrise. Andersen Air Force Base on the northern tip of Guam received over 7 inches of rain, while the National Weather Service Office in the central part of the island received only just over 3 inches of rain.

Despite the wind and rain, no deaths or serious injury was reported across the Marianas. The airport in Guam reported some canceled flights. The aircraft carrier George Washington, stopped at Guam for a few days, had to leave two days earlier because of the typhoon. This cut short Liberty for the ship's crew and this hurt local |businesses slightly.

Hurricane (Typhoon), Rota

When
October 5, 12:00 PM GST to October 6, 1:00 PM GST
Where
Rota forecast zone
Category
1
Property damage
$100,000
Crop damage
$50,000
Reported by
Official NWS Observations

On the 1st of October scatterometer data depicted a circulation just east of Kosrae. The circulation moved slowly northwest, being located 150 miles northeast of Pohnpei on the morning of the 3rd, became sufficiently organized to be classified as Tropical Depression 19W. Further intensification during that afternoon allowed the depression to become Tropical Storm 19W and during that evening it made it's closest approach to Pohnpei as it passed 120 miles north of the island. Most of the tropical storm force winds were found north of the tropical storm. The radius of tropical storm force winds south of the system did not extend as far as Pohnpei. No reports of damage were reported from that island. By the 4th the system was named Tropical Storm Vongfong and further intensification allowed it to reach typhoon intensity. The typhoon passed 285 miles north of Chuuk on the morning of the 5th. This was too far to cause any ill effect on the island. The typhoon continued its trek northeast and passed across the Marianas Islands on the 6th. During the early morning hours of the 6th...between 3 and 4 am...the eye of Typhoon Vongfong passes just north of Rota. Radar data showed that the eyewall of the typhoon probably passed over parts of this island. Brief wind shear caused some weakening of the typhoon as it passed over the Marianas. Seventy percent of the island of Rota briefly lost power. The airport at Rota was not open so unfortunately no wind data was reported. The highest wind gust observed across central Guam at the National Weather Service Office was 43 knots (49 mph), at 228 am. Across northern Guam at Andersen Air Force Base the highest wind gust was 61 knots (70mph) at 308 am. Across Saipan the highest wind gust was 52 knots (60 mph) at 203 am. On Guam only minor flooding and sporadic power outages were reported across the island. Downed trees were also reported in a few areas of the island. In Yigo, four employees of the mayor helped rescue a family of 17 people from flooding in that village. the northern half of the island reported the most rain as a major rain band pushed across that area before sunrise. Andersen Air Force Base on the northern tip of Guam received over 7 inches of rain, while the National Weather Service Office in the central part of the island received only just over 3 inches of rain. Despite the wind and rain, no deaths or serious injury was reported across the Marianas. The airport in Guam reported some canceled flights. The aircraft carrier George Washington, stopped at Guam for a few days, had to leave two days earlier because of the typhoon. This cut short Liberty for the ship's crew and this hurt local businesses slightly.

What these are

Hurricane (Typhoon)
A tropical cyclone with sustained winds of 64 knots (74 mph) or more, filed per forecast zone for its wind, and with separate events for its flooding, surge and tornadoes.

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

The same day elsewhere

More

Every storm in Guam in 2014Every state in 2014This day in weather historyWarnings in Guam, October 2014The 2014 hurricane season

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: 546019, 546021.