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.
CAMPUS ADVISORY: TROPICAL STORM SINLAKU. Preparations for Tropical Storm Sinlaku. The University of Guam is closely monitoring the approach of Tropical Storm Sinlaku. Students, faculty, and staff are encouraged to take all necessary precautions, secure their homes, and ensure they have emergency supplies. Employees and students are encouraged to monitor UOG email and official social media channels for timely updates on campus operations and class schedules.
This text has been reconstructed from news coverage and may not reflect the exact original wording.
Posted to UOG's campus-advisories page in the morning of Sunday, April 12, 2026 ChST
Guam uses Chamorro Standard Time (UTC+10) year-round, identical to Saipan, with no daylight saving
At this point Sinlaku was still classified as a tropical storm; it intensified to typhoon strength later that day
CAMPUS ADVISORY: TS SINLAKU — Governor's Executive Order 2026-01. Governor Lou Leon Guerrero has signed Executive Order 2026-01 Relative to Declaring a State of Emergency in Anticipation of the Approach of Tropical Storm Sinlaku. The Governor has placed the island in COR 2 effective 12:00 PM today. Under COR 2, non-emergency GovGuam offices — including the University of Guam — will be closed until the island returns to COR 4. All UOG events and activities are canceled or rescheduled until further notice.
This text has been reconstructed from news coverage and may not reflect the exact original wording.
Effective at noon ChST on Sunday, April 12, 2026 per the Governor's executive order
COR 2 (Condition of Readiness 2) means destructive winds of 50 knots or greater are expected within 24 hours under Guam's civilian preparedness system
As an autonomous instrumentality of GovGuam, UOG closure is automatically triggered by COR 2
CAMPUS ADVISORY: TYPHOON SINLAKU — JIC Release No. 3. Sinlaku has been upgraded to a Typhoon. Joint Region Marianas has set TCCOR 3, indicating destructive winds of 50 knots or greater are possible within 48 hours. The University of Guam remains closed under COR 2. Students, faculty, and staff should shelter in place and avoid travel as conditions deteriorate. Continue to monitor official UOG channels for further updates.
This text has been reconstructed from news coverage and may not reflect the exact original wording.
JIC stands for Joint Information Center, run by Guam Homeland Security / Office of Civil Defense
TCCOR is the military's parallel Tropical Cyclone Condition of Readiness system used by Joint Region Marianas
TCCOR and COR run in parallel: TCCOR 3 corresponds roughly to civilian COR 3, but the systems are not identical
CAMPUS ADVISORY: TYPHOON SINLAKU. Guam Anticipates Tropical Storm Force Winds; Sinlaku Upgraded to a Super Typhoon. Sinlaku has been upgraded to a Super Typhoon. Tropical storm force winds (39 mph or more) are expected to reach Guam Monday night. The University of Guam remains closed and all events are canceled. Employees and students should remain at home, secure outdoor items, and continue to monitor UOG email and official social media channels.
This text has been reconstructed from news coverage and may not reflect the exact original wording.
Sinlaku reached super typhoon status (sustained winds 150+ mph) before its closest approach to Guam
Tropical storm force winds first reached Guam Monday night, April 13, 2026
Although Sinlaku's eye passed north of Guam over the CNMI, its large windfield delivered prolonged tropical storm conditions to Guam
UOG to Resume Classes April 20. Following the passage of Super Typhoon Sinlaku and ongoing recovery efforts across the island, the University of Guam will resume classes on Monday, April 20, 2026. University officials have conducted a thorough assessment of campus conditions to ensure facilities are safe and ready, and have worked with the Guam Power Authority and Guam Waterworks Authority on the restoration of power and water prior to reopening. Students, faculty, and staff should continue to monitor UOG email and official social media channels for any updates.
This text has been reconstructed from news coverage and may not reflect the exact original wording.
UOG remained closed for approximately eight days (April 12-19, 2026) — among the longest weather closures in the university's history
Power and water restoration are routine bottlenecks for Pacific island campuses after major typhoons; GPA and GWA are the relevant Guam utilities
Sinlaku's slow forward speed extended the impact window well beyond a typical typhoon, which usually allows 2-3 day reopens
Context
Background
The University of Guam is the only four-year land-grant institution in the Western Pacific, serving roughly 4,000 students from its main campus in Mangilao on Guam's eastern coast. On April 12, 2026, Governor Lou Leon Guerrero signed Executive Order 2026-01 declaring a state of emergency and placing the island in COR 2 at noon ChST, which automatically triggered the closure of non-emergency GovGuam agencies including UOG. Joint Region Marianas, which oversees military preparedness for the Marianas region, escalated to TCCOR 1E as Sinlaku intensified into a Category 5 super typhoon and its eye passed north of Guam over Tinian and Saipan on April 14, 2026. UOG sequenced five public campus advisories during the storm: a preparation message, the executive-order closure, two intensification updates, and the resumption announcement. Classes resumed on Monday, April 20, 2026, eight days after the initial closure, following utility restoration coordination with the Guam Power Authority and Guam Waterworks Authority. The university also hosted CIS2026 — its conference on island sustainability — as scheduled after the storm, repositioning its theme around storm resiliency.
Analysis
Key Findings
01UOG's closure was automatic — triggered by the civilian COR 2 declaration rather than an internal decision, reflecting the university's status as a GovGuam instrumentality
02The eight-day closure (April 12-19, 2026) reflects Sinlaku's slow forward speed, which extended Guam's peak conditions well past a normal typhoon's 24-36 hour pass-through window
03UOG's parallel sequencing of civilian COR and military TCCOR updates in its campus advisories is a distinctive Marianas-region communication pattern not seen at mainland US institutions
Outcome
Guam was placed in COR 2 at noon ChST on Sunday, April 12, 2026 and JRM raised TCCOR to 1E as the storm's peak conditions arrived. UOG remained closed through the week as the slow-moving storm extended peak conditions. The university resumed classes on Monday, April 20, 2026 following a full campus assessment and coordination with Guam Power Authority and Guam Waterworks Authority on utility restoration.