Campus Alert Archive
UOG

25 Inches of Rain at UOG in One Night: Super Typhoon Pongsona's Record-Breaking Strike on the University of Guam

GUhurricaneemergency notificationmedium confidence
Confirmed Threat

Super Typhoon Pongsona struck Guam on December 8, 2002, with sustained winds of 144 mph and gusts to 173 mph, destroying approximately 1,300 homes and causing over $700 million in damage island-wide. The University of Guam's weather station recorded more than 25 inches of rain during the storm -- one of the highest single-storm rainfall totals on record at the campus location. The entire island lost power, and UOG closed for approximately two weeks as infrastructure was assessed and partially restored.

Alerts
3
Response
min
Killed
0
Injured
0
Institution
University of Guam
Territory · GU
~3,500 students
Confirmed Timeline

Alert Sequence

3 messages in sequence

Some alert texts below are approximate reconstructions from news coverage, not confirmed verbatim transcripts. Reconstructed texts are shown in italic with a dashed border. Verified verbatim texts have a solid border and are marked accordingly.

INITIAL ALERTPA System
Approximate reconstruction549 chars
[The University of Guam announces the suspension of all classes and campus operations as Super Typhoon Pongsona approaches Guam. With Guam now under Typhoon Condition of Readiness 1, the campus is being secured and all personnel are directed to evacuate to approved typhoon shelters. Students in campus housing should shelter in designated safe areas within their buildings. The University will communicate further information when it is safe to do so. Please follow all instructions from Guam Emergency Management and the Joint Information Center.]

This text has been reconstructed from news coverage and may not reflect the exact original wording.

Guam uses Chamorro Standard Time (ChST), UTC+10, year-round with no daylight saving time; Pongsona struck during the early morning hours of December 8, 2002 local time
The University of Guam campus at Mangilao is located on the central eastern coast of Guam; the campus serves as the only four-year public university in the Micronesian region
Typhoon Condition of Readiness 1 is the highest alert level in Guam's typhoon preparedness system, indicating destructive winds expected within 12 hours
UPDATEPA System
Approximate reconstruction621 chars
[Super Typhoon Pongsona has passed. The University of Guam campus sustained significant water damage and infrastructure impacts from the storm. More than 25 inches of rain fell during the typhoon, and sustained winds of 144 mph with gusts to 173 mph caused widespread damage across the campus and the island. The entire island of Guam has lost electrical power. Campus operations remain suspended until further notice. University personnel are conducting a safety assessment of all buildings. Students should remain in safe locations and await further instructions from University administration via radio announcements.]

This text has been reconstructed from news coverage and may not reflect the exact original wording.

The rainfall measurement of more than 25 inches at the University of Guam is confirmed by the NOAA meteorological assessment of Super Typhoon Pongsona
With island-wide power destroyed, the University communicated post-typhoon updates through radio broadcasts; KUAM and other local stations served as primary emergency information channels
Pongsona's eye, approximately 40 miles wide, passed over the northern portion of Guam; the Mangilao campus on the eastern coast experienced the typhoon's intense rain bands and strong winds
ALL CLEAREmail
Approximate reconstruction593 chars
[The University of Guam will resume limited campus operations beginning [date] following structural safety assessments of all buildings. Classes will resume when the administration determines that facilities are safe and accessible. Students should check the UOG website and local radio stations for further announcements. The University thanks all members of the campus community for their patience and cooperation during the aftermath of Super Typhoon Pongsona. Guam's recovery is ongoing, and the University remains committed to completing the fall 2002 semester for all enrolled students.]

This text has been reconstructed from news coverage and may not reflect the exact original wording.

The approximate two-week closure is consistent with the scale of Pongsona's damage and the island-wide power outage that followed; precise reopening date was not confirmed in available sources
The FEMA disaster declaration (DR-1446-GU) authorized federal assistance for Guam's recovery from Pongsona
Pongsona was among the five most costly typhoons in Guam's history, causing over $700 million in total damage island-wide
Context

Background

Super Typhoon Pongsona struck Guam on December 8, 2002, and became one of the most destructive typhoons in the island's modern history. The storm made landfall with a 40-mile-wide eye that crossed over the northern portion of Guam, producing sustained winds of 144 mph and gusts to 173 mph. Total damage exceeded $700 million, approximately 1,300 homes were destroyed, and the entire island lost electrical power. The University of Guam's campus at Mangilao recorded more than 25 inches of rainfall during the storm, one of the highest measurements at any fixed weather station on the island. This extraordinary rainfall, combined with extreme winds, caused significant infrastructure damage across the UOG campus. With island-wide power destroyed, the university relied on radio broadcasts through KUAM and other local stations to communicate with students and staff. UOG closed for approximately two weeks as building safety assessments were conducted and partial power restoration allowed limited operations to resume. FEMA declared a major disaster for Guam (DR-1446-GU), authorizing federal assistance for recovery. The case is notable as one of the most severe typhoon events to affect the University of Guam in the modern era, and it underscores the annual typhoon preparedness obligations that define campus operations across US Pacific territories. Mark Lander, a UOG meteorology researcher, later conducted detailed assessments of Pongsona's meteorological characteristics, demonstrating the university's dual role as both a typhoon-impacted institution and a scientific research partner in understanding Pacific storms.
Analysis

Key Findings

Super Typhoon Pongsona's 40-mile-wide eye crossed northern Guam on December 8, 2002, with 144-mph sustained winds and 173-mph gusts -- among the strongest ever recorded on the island
The University of Guam weather station recorded more than 25 inches of rain during Pongsona, one of the highest single-storm rainfall totals in the campus's history
Island-wide power loss forced UOG to rely on radio broadcasts for emergency communications in the typhoon's aftermath
Total island-wide damage exceeded $700 million, placing Pongsona among Guam's five most costly typhoons
FEMA declared a major disaster for Guam (DR-1446-GU), authorizing federal recovery assistance
Outcome
University of Guam closed for approximately two weeks after Pongsona. The entire island lost electricity; power restoration was a phased process over several weeks. Semester operations were significantly disrupted. FEMA declared a major disaster for Guam (DR-1446-GU), enabling federal recovery assistance.
Provenance

Sources

  1. Source
    Typhoon Pongsona - Wikipedia
    en.wikipedia.org
  2. Official
    Super Typhoon Pongsona December 8, 2002 - NOAA Assessment
    weather.gov
  3. News
    Super Typhoon Pongsona, Dec. 8, 2002 - Guam PDN Typhoon Guide
    guampdn.biz
  4. Official
    Guam Super Typhoon Pongsona (DR-1446-GU) - FEMA
    fema.gov
  5. Source
    Remembering Typhoon Pongsona - Force Thirteen
    force-13.com
Tags
typhoonpongsonaguamterritorychamorropower-outageextended-closurehistoricalfema-disaster2002micronesia
Added June 2026Updated June 2026Via ingestion