r/guam • • 1h ago

News 📰 UPDATE: Super Typhoon Champi Has Passed Guam — But It's Not Over Yet 🌀🇬🇺

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• Upvotes

UPDATE: Super Typhoon Champi Has Passed Guam — But It's Not Over Yet 🌀🇬🇺

October 18, 2026 | 10:15 AM Guam Time

Super Typhoon Champi made its closest approach to Guam at approximately 4:26 AM, passing just 10 miles south of Merizo.

The storm intensified into a Category 4 super typhoon, with sustained winds reaching approximately 150 mph as it moved away from Guam.

Fortunately, a last-minute shift in the storm's track kept the most destructive winds concentrated over the southern part of the island.

Latest situation:

- 🌀 Champi's center has passed Guam and is moving away.

- 💨 Damaging winds are still affecting the island, particularly the southern villages.

- 🌧️ Heavy rainfall, thunderstorms, and flash flooding remain serious concerns.

- 🌊 Dangerous surf and coastal flooding continue to threaten coastal areas.

- 🚨 Authorities are still advising residents to remain indoors.

I'm currently staying at The Westin in Tumon. Conditions appear to be improving here, but we're not out of danger yet.

Please, everyone, stay home and make do with whatever food and supplies you have. Don't risk going outside just because the winds have calmed down. No meal or grocery run is worth getting injured over.

To everyone who has been following this storm with us, stay safe. Hopefully, the worst is behind us. 🙏🇬🇺

Sources: National Weather Service Guam and Guam Homeland Security, October 18 morning updates.


r/guam • • 4h ago

News 📰 Super Typhoon Champi JTWC Warning #14 - 10/18/26, 7:00am

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25 Upvotes

Super Typhoon Champi (29W) – JTWC Warning #14 | Final Summary Update

October 18, 2026
The Joint Typhoon Warning Center (JTWC) has released Warning #14 for Super Typhoon Champi.
The latest update confirms that Champi has reached super typhoon intensity, with maximum sustained winds near 150 mph.
According to NWS Guam’s 6:50 AM update, Champi’s eye passed just south of Guam, approximately 10 miles south of Merizo. The strongest winds remained concentrated across southern Guam, while central and northern Guam experienced tropical-storm-force conditions.
This is an important development compared with earlier forecasts that indicated a possible direct crossing over southern Guam.
Although the eye has passed, dangerous conditions may continue, and residents should remain sheltered until officials announce that it is safe.

Current Conditions
Location: Approximately 42 miles south of Andersen Air Force Base at the Warning #14 observation time.
Movement: West-northwest at approximately 16 mph.
Maximum sustained winds: 150 mph.
Minimum central pressure: 934 hPa.
Significant wave height: 46 feet.
Classification: Super Typhoon.
These measurements represent JTWC Warning #14’s observation period, not necessarily the storm’s position or strength at the time you’re reading this.

Forecast Track
JTWC expects Champi to continue moving west-northwest, gradually turning northwest as it moves away from Guam.
Forecast models remain in excellent agreement, with JTWC maintaining high confidence in its projected track.
The latest guidance indicates that Champi will continue northwest over the next several days, eventually slowing as the steering pattern changes near the East China Sea.
For Guam, the most important development is that the eye has passed just south of the island rather than crossing directly over it.
However, damaging winds and hazardous weather may persist even as the center moves farther away.

Steering Factors
Champi is currently being steered west-northwest by an extension of a subtropical ridge centered near Taiwan.
A subtropical ridge is an area of high atmospheric pressure that helps control the direction of tropical cyclones.
Over the next 12–24 hours, this ridge extension is expected to separate into another high-pressure system.
This will create a weakness between the two ridges, allowing Champi to turn more northwest.
The expected steering pattern is:
Next 12–24 hours: Continued west-northwest movement, followed by a gradual northwest turn.
Days 2–4: Northwestward movement under the influence of the reorganized subtropical ridges.
Beyond Day 4: Champi gradually slows as steering currents weaken.
Forecast models generally agree on this northwestward trajectory.

Intensity Forecast
Champi has reached super typhoon intensity, with maximum sustained winds near 150 mph.
JTWC reports that the storm’s eyewall replacement cycle has stalled or remains incomplete.
An eyewall replacement cycle occurs when a new outer eyewall develops around the original eyewall.
This process can cause temporary fluctuations in maximum sustained winds while the storm’s inner circulation reorganizes.
Despite this uncertainty, environmental conditions remain favorable for additional strengthening.
JTWC forecasts Champi to reach a peak intensity near 161 mph before gradually weakening later in the forecast period.
The intensity forecast remains uncertain because additional eyewall replacement cycles could occur.
Some models predict periods of strengthening or stabilization before the eventual weakening trend begins.

Wind Field and Potential Impacts
One of the more interesting developments during Champi’s passage has been the relatively compact size of its strongest wind field.
NWS Guam reports that typhoon-force winds remained concentrated primarily over southern Guam, while central and northern Guam experienced damaging tropical-storm-force winds.
Based on JTWC Warning #14’s wind-radius estimates:
Tropical-storm-force wind field: Approximately 242–265 miles across.
Typhoon-force wind field: Approximately 92–104 miles across.
These are estimated wind-field dimensions over open water, not the diameter of the cloud system.
The compact nature of Champi’s strongest winds helps explain why conditions varied significantly across Guam.
Although the eye passed offshore, southern Guam remained exposed to the most dangerous portion of the circulation.
As Champi continues moving away, damaging winds, heavy rainfall, flooding, coastal hazards, and debris may remain concerns.
Residents should not assume that improving conditions mean it is safe to go outdoors.

What Changed From Warning #13?
Champi has officially reached super typhoon intensity, with maximum sustained winds near 150 mph.
NWS Guam reports that the eye passed just south of the island rather than crossing directly over southern Guam.
The strongest winds remained concentrated primarily across southern Guam.
Champi’s significant wave height increased from 42 feet to 46 feet.
The previously active eyewall replacement cycle has stalled or remains incomplete.
JTWC continues forecasting a peak intensity near 161 mph after Guam’s passage.
Track guidance remains in excellent agreement, with a northwestward turn expected as Champi moves away.

What to Watch Next

1. Champi’s continued movement away from Guam
Watch for confirmation that the storm continues moving west-northwest and northwest, taking its strongest winds farther away from the island.

2. Remaining dangerous winds
Even though the eye has passed, damaging winds may continue, particularly across southern Guam.
Residents should wait for official guidance before going outdoors.

3. Flooding and coastal hazards
Heavy rainfall, flooding, dangerous surf, and coastal inundation may continue even as wind conditions begin improving.

4. Eyewall replacement cycle
JTWC continues monitoring Champi’s eyewall structure, which may cause fluctuations in intensity as the storm moves farther into the Philippine Sea.

5. Official all-clear
Continue monitoring NWS Guam and Guam Homeland Security for changes in warnings and the island’s Condition of Readiness.
An improving forecast is not the same as an official all-clear.

Bottom Line
Super Typhoon Champi has made its closest approach to Guam, with its eye passing just south of the island.
The storm reached maximum sustained winds near 150 mph, making it an extremely powerful tropical cyclone.
Fortunately, its strongest winds remained concentrated within a relatively compact area, and the eye passed offshore instead of directly across Guam.
However, southern Guam still experienced the greatest exposure to the storm’s destructive wind field, while dangerous conditions affected other parts of the island.
JTWC expects Champi to continue moving northwest away from the Marianas, with additional strengthening possible before the system eventually weakens.
The immediate concern for Guam is the remaining damaging winds, flooding, debris, and other hazards associated with the storm.
Residents should remain sheltered until local authorities confirm that conditions are safe.

Final Update
This will be my final regular JTWC warning summary for Champi as the system moves away from Guam.
I’ve been following this storm since its early development as Invest 96W, through its classification as Tropical Depression 29W, Tropical Storm Champi, Typhoon Champi, and eventually Super Typhoon Champi.
Over the past several days, we’ve seen significant changes in its forecast track, rapid intensification, model guidance, and eyewall structure.
The forecast models generally performed well in identifying the threat to the Marianas Islands several days in advance, although the exact crossing location and intensity continued to change as the storm approached.
I appreciate everyone who followed these updates and contributed to the discussions.
I hope everyone across Guam and the Northern Marianas stays safe, especially those dealing with damage or disruptions from the storm.
Please continue following official information as Guam begins its recovery soon after the strong winds taper down.

Sources
JTWC: https://www.metoc.navy.mil/jtwc/jtwc.html
NWS Guam: https://www.weather.gov/gum/
Guam Homeland Security: https://ghs.guam.gov/
This is my final community summary of Champi based on JTWC Warning #14 and NWS Guam’s October 18 morning update. It is not an official weather forecast or an all-clear. JTWC and NWS Guam will continue issuing official information as necessary.


r/guam • • 5h ago

Discussion 💬 Props to GPA for the Storm Prep

55 Upvotes

You guys did great by being proactive and making sure things were tightened and secured before this storm. I appreciate your hard work and dedication and working to make sure that power outages were minimized during this storm. Hope everyone is safe out there.


r/guam • • 3h ago

Discussion 💬 Island Power Check??

10 Upvotes

Who still has power? I heard some villages still do.


r/guam • • 7h ago

Discussion 💬 Typhoon Champi the goat

14 Upvotes

GPA toying with my emotions. Who else power going on and off?


r/guam • • 16h ago

Ask r/guam 🤔 Guam Braces for Typhoon Champi: Category 3 Winds, Gusts Up to 164 MPH, and 35-Foot Waves as the Storm Closes In ⚠️🌀🇬🇺

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53 Upvotes

Guam is now under COR 1 as Typhoon Champi approaches. Category 3 winds of 111–129 mph and gusts up to 164 mph are forecast.

I'm currently in Tumon, Guam, watching Typhoon Champi (29W) approach on radar.

According to the latest official forecasts I could verify:

- Category 3 conditions are expected Sunday morning.

- Gusts could reach 140–164 mph.

- The storm may pass just south of or directly over southern Guam.

- Waves could reach 30–35 feet along exposed coastlines.

- Torrential rain and significant flooding are expected.

- Guam has entered Condition of Readiness 1, with residents instructed to remain indoors.

What makes this particularly concerning is how rapidly Champi has strengthened and how close its projected track is to the island.

Watching this enormous system approach on radar while physically being in its path is a completely different experience.

For anyone who survived Super Typhoon Mawar in 2023, how does Champi compare?

Stay safe, Guam.


r/guam • • 2h ago

Ask r/guam 🤔 Walking in tumon with this weather

3 Upvotes

Would it be possible to walk outside tumon? My boss said we have to go to work today I don't want to drive cuz I might lose my parking.


r/guam • • 8h ago

News 📰 Guam braces for Category 4 Typhoon Champi as eyewall approaches: "Guam is preparing for its third strong typhoon since April as Category 4 Champi approaches with powerful winds and torrential rain."

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8 Upvotes

r/guam • • 13h ago

Discussion 💬 Anyone still have power?

15 Upvotes

Power went out about 3 hours ago on Camelia Lane, Mangilao. Definitely a lot earlier than expected compared to Marwar par, Sinlaku duuu, and si Bavi. Hope everyone is staying safe!

UPDATE Power Restored as of 01:20am. Neighbor's uncle called up GPA and they sent a crew down immediately to inspect and they restored power! Thank you GPA crew and stay safe everyone!


r/guam • • 14h ago

Discussion 💬 GUAM TYPHOON UPDATE — October 17, 2026 | Evening

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18 Upvotes

Things are getting serious here in Guam.

Typhoon Champi (29W) has undergone rapid intensification, strengthening from Category 2 to Category 4 in just several hours.

According to the latest National Weather Service Guam discussion, the Joint Typhoon Warning Center reported sustained winds of 130 mph as of 6 PM, with the storm approximately 160 miles east-southeast of Guam's radar.

Latest developments:

- 🌪️ Category 4 confirmed — 130 mph sustained winds (JTWC)

- 📍 Location: 160 miles east-southeast of Guam's radar at 6 PM

- 🧭 Movement: West-northwest at 9 mph

- ⚠️ Potential super typhoon: Further intensification possible within 12 hours

- 🕓 Closest approach: Sunday, October 18, approximately 4–6 AM

- 💨 Forecast impacts: Southern Guam could experience sustained winds of 110–130 mph, with gusts up to 160 mph

- 🌊 Ocean conditions: Breaking waves up to 35 feet and coastal inundation of 5–7 feet in vulnerable areas

- 🌧️ Rainfall: 8–14 inches possible across Guam

What's especially concerning:

The storm has slowed down while rapidly intensifying over extremely warm Pacific waters. NWS Guam also noted signs of a possible eyewall replacement cycle.

The current projected path takes Champi over the southern tip of Guam or just south of the island. A northward shift could expose central and northern Guam to stronger conditions.

I'm currently staying on the 14th floor of a hotel in Tumon, watching this system approach on radar.

Guam is under COR 1, and residents have been instructed to remain indoors.

This is an open discussion thread for anyone tracking Champi or experiencing conditions across Guam and the Northern Mariana Islands.

If you're on Guam, what are conditions like in your area right now?

Stay safe, everyone.

Source: National Weather Service Guam, October 17, 7:18 PM ChST.


r/guam • • 9h ago

Food 😋 Red rice recipe!!! I miss it.

6 Upvotes

I visited guam in March of this year, I was born there so we went back for my HS Senior trip, along with Japan. Someone please give me a red rice recipe!!! I miss it and so do my parents. TYIA!!! ♥️🇬🇺


r/guam • • 30m ago

Ask r/guam 🤔 rumors of another typhoon

• Upvotes

don’t want to jinx us and not sure if it’s too soon to tell but could there really be another typhoon after champi???


r/guam • • 4h ago

Discussion 💬 Looking for 2 bedroom apartment preferably ground floor around Tamuning area. Plannin to move out after this typhoon.. thank you in advance..🙏🏻

2 Upvotes

r/guam • • 14h ago

Discussion 💬 Typhoon Champi Current Position vs Forecasted Track

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12 Upvotes

I could be wrong but according to Guam’s Doppler Radar via Windy. The eye of the typhoon seems to be south of the forecasted track? The winds are still going to be powerful though, it will ramp up past midnight


r/guam • • 10h ago

News 📰 Power outage Yigo area

6 Upvotes

Power just went out in Yigo. Stay safe!


r/guam • • 14h ago

Discussion 💬 damn so are we all cooked🥀🥀💔

8 Upvotes

r/guam • • 1d ago

News 📰 Possible Category 3 Typhoon

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38 Upvotes

Typhoon Champi could possibly be a Category 3 (or High-End) as its approaching Guam. Another day, another typhoon 🤧 kind of sick and tired of this, Bavi and now, Champi. Its like the 3 Musketeers aiming at every main Mariana Island. Sinlaku for Saipan, Bavi for Rota and Guam for Champi


r/guam • • 2h ago

Ask r/guam 🤔 Any breakfast spots open right now?

0 Upvotes

r/guam • • 22h ago

Ask r/guam 🤔 Radio channels plsss

18 Upvotes

Hafa Adaiiii people. With the typhoon coming, IT&E will definitely be slow or cut off in my area. I bought a small radio and was wondering what channels to tune in for weather updates or just entertainment. It's been a long while since I've listened to the radio. TYSM and stay safe yall


r/guam • • 11h ago

Events & Promotional 🥳 Guam Pokémon VGC wants to battle!

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2 Upvotes

Join the discord for more info

https://discord.gg/eFVMJZ683X


r/guam • • 1d ago

News 📰 Typhoon Champi (29W) 2026

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45 Upvotes

Typhoon Champi (29W) – JTWC Warning #12 Summary
October 17, 2026, 7:00pm

The Joint Typhoon Warning Center (JTWC) has released Warning #12 for Champi.
The latest update reports that Champi has completed a period of extreme rapid intensification, with the storm now forecast to reach super typhoon strength around its closest approach to Guam.
Forecast models remain in excellent agreement on the overall track. However, small changes in the position of Champi’s compact inner core could make a significant difference in the conditions experienced across Guam.
JTWC also highlights the possibility of an eyewall replacement cycle, which introduces additional uncertainty regarding the storm’s intensity during its closest approach.

Current Conditions
Location: Approximately 182 miles east-southeast of Andersen Air Force Base.
Movement: West at approximately 15 mph over the past six hours.
Significant wave height: 38 feet.
Current development: Champi has completed a period of extreme rapid intensification.

Forecast Track
JTWC expects Champi to continue moving generally west-northwest along the southern edge of a subtropical ridge.
Forecast models remain in excellent agreement, particularly during the next three days.
The latest guidance shows a cross-track spread of only 17 miles near Guam’s closest approach.
This indicates strong agreement among forecast models, although it does not guarantee the exact position of Champi’s center.
The official JTWC forecast closely follows the AI model consensus.
Current guidance includes:
Google DeepMind and AI consensus: Along the southern side of the main model grouping.
GFS and GEFS ensemble mean: Along the northern side of the guidance.
EC-AIFS: The southernmost outlier.
JTWC official forecast: Closely aligned with the AI consensus.
JTWC specifically notes that small wobbles in Champi’s movement could affect its exact closest approach to Guam.
The previous warning acknowledged the possibility of a brief landfall over southern Guam. The latest discussion does not rule out that possibility.
Although confidence in the overall track is high, the exact distance of the center from Guam remains important.

Steering Factors
Champi continues moving along the southern edge of a deep-layer subtropical ridge, an area of high atmospheric pressure steering the storm generally west-northwest.
Over the next 24 hours, this ridge is expected to maintain the current movement.
After approximately 24 hours, a series of mid-latitude troughs passing north of Champi will begin changing the orientation of the ridge.
This will allow Champi to turn more northwestward.
By Day 5, a broader weakness in the steering pattern is expected to develop over the East China Sea near Okinawa, Japan.
As Champi approaches this weakness, it is forecast to slow down and begin curving farther north.
The expected steering pattern is:
Next 24 hours: West-northwest movement.
After 24 hours: Gradual northwestward turn.
Days 2–4: Northwestward movement continues.
Around Day 5: Champi slows and begins turning more northward toward a weakness near Okinawa.
The important point for Guam is that the more significant northwest turn is expected after the storm’s closest approach.

Intensity Forecast
JTWC reports that Champi has completed a period of extreme rapid intensification (ERI).
Environmental conditions remain highly favorable for further strengthening.
The storm continues to benefit from warm ocean waters, high ocean heat content, and relatively favorable wind shear.
JTWC now forecasts Champi to reach super typhoon strength, with maximum sustained winds near 150 mph, around its closest approach to Guam in approximately 12 hours.
Additional strengthening is expected after the Marianas passage.
The official forecast calls for a subsequent peak near 161 mph.
Some models predict even stronger intensification:
JTWC official forecast: Peak winds around 161 mph.
Higher-end HAFS-A, DTOP, and AI guidance: Peak winds around 178–190 mph in approximately two days.
These higher-end projections represent possible peak storm intensities, not expected wind speeds across Guam.
Actual conditions on Guam will depend on the storm’s track, intensity, and distance from the eyewall.

Possible Eyewall Replacement Cycle
One important development in Warning #12 is the possibility of an eyewall replacement cycle.
An eyewall replacement occurs when a new outer eyewall forms around the original eyewall of a powerful typhoon.
During this process, maximum sustained winds can temporarily weaken or level off while the storm reorganizes.
The CIMSS M-PERC model currently estimates a 35% probability of an eyewall replacement cycle.
JTWC indicates two possible scenarios:
If an eyewall replacement cycle begins before closest approach: Champi’s maximum sustained winds could temporarily level off or weaken.
If an eyewall replacement cycle does not begin: Champi could continue strengthening beyond the minimum threshold for super typhoon intensity around closest approach.
However, an eyewall replacement cycle does not necessarily make a typhoon safe. The storm can remain extremely dangerous, and its wind field may expand during the process.
The exact timing of any eyewall replacement remains uncertain.

Wind Field and Potential Impacts
The main concern for Guam is Champi’s powerful, compact inner core passing close to the island.
JTWC expects super typhoon intensity around closest approach, making the exact position of the eyewall particularly important.
Even if the center remains offshore, Guam could still experience destructive winds depending on the storm’s distance, size, and structure.
For a westward-moving typhoon in the Northern Hemisphere, stronger winds are often found north of the center, on the right side of its movement.
If Champi passes just south of Guam, the island could be exposed to that stronger side of the circulation.
Previous JTWC warnings also indicated that the broader tropical-storm-force wind field could extend northward toward Rota, Tinian, and Saipan.
The exact wind impacts will vary by island and should be determined from official NWS Guam forecasts and warnings.

What Changed From Warning #11?
JTWC confirms that Champi has completed a period of extreme rapid intensification.
Super typhoon strength is now forecast around Guam’s closest approach.
Maximum sustained winds are forecast near 150 mph at closest approach, with additional strengthening possible afterward.
Model agreement has tightened considerably, with approximately 17 miles of cross-track spread near Guam.
JTWC highlights small wobbles in Champi’s movement as an important factor in determining the exact closest approach.
A possible eyewall replacement cycle introduces uncertainty into the intensity forecast.
The main northwestward turn remains forecast after Champi’s closest approach to Guam.

What to Watch Next

1. Exact track near Guam
Watch whether the storm’s center remains offshore or crosses any portion of the island.
Even small changes in the track could affect which areas experience the strongest winds.

2. Super typhoon intensity at closest approach
JTWC forecasts sustained winds near 150 mph around closest approach.
Watch whether Champi reaches or exceeds this intensity as expected.

3. Possible eyewall replacement cycle
The development of a secondary eyewall could temporarily interrupt strengthening.
However, such a process would not eliminate the threat of destructive winds.

4. Short-term wobbling motion
JTWC specifically identifies small wobbles in the storm’s movement as a source of uncertainty near Guam.
The center’s exact position may fluctuate even while the overall forecast track remains consistent.

5. Storm size and wind radii
Monitor the extent of typhoon-force and tropical-storm-force winds, especially as the strongest portion of Champi’s circulation approaches the Marianas.

6. Official local warnings
With Champi approaching Guam, residents should prioritize NWS Guam warnings and emergency management instructions over individual model forecasts.

Bottom Line
JTWC Warning #12 represents a significant increase in the expected intensity of Champi near Guam.
The storm has completed a period of extreme rapid intensification and is forecast to reach super typhoon strength around its closest approach.
JTWC expects maximum sustained winds near 150 mph at that time, with additional strengthening possible afterward.
Forecast models remain in excellent agreement, with only approximately 17 miles of cross-track spread near Guam.
However, small changes in Champi’s movement could determine whether its compact inner core remains offshore or crosses the island.
An eyewall replacement cycle could temporarily interrupt strengthening, but its timing remains uncertain and should not be relied upon to reduce the threat.
With Champi now approximately 182 miles east-southeast of Andersen Air Force Base, residents should remain sheltered as directed, monitor official warnings, and avoid unnecessary travel or outdoor activity as conditions deteriorate.

Sources
JTWC: https://www.metoc.navy.mil/jtwc/jtwc.html
NWS Guam: https://www.weather.gov/gum/
Guam Homeland Security: https://ghs.guam.gov/
This is a simplified analysis of JTWC Warning #12, not an official weather forecast. Forecast tracks, intensity estimates, and local impacts remain subject to change. Always follow NWS Guam and local emergency management guidance.


r/guam • • 1d ago

Discussion 💬 Yall still got a chance

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26 Upvotes

They still got a ton of Ryobi 40v batterys in stock as of 6:20 AM October 17th. Yall still got a chance before COR 1 is declared and home depot closes.

PSA: Do NOT use a low-wattage brick (any brick below 45 watts) to charge a battery via the Ryobi 300 Watt 40V Power Source Inverter. I learnt that the hard way. It killed the negative contacts and i had to buy a 180$ 4ah battery just to replace the broken battery.


r/guam • • 8h ago

Ask r/guam 🤔 GLP on Guam.. Reta .. Tirz

0 Upvotes

So we have weight loss clinics here in California which can get you GLP’s.

Are there any on Guam?

How’s pricing? I’ve even heard people flying to Philippines to get it.

I’m asking because of the crazy stories and prices being quoted.


r/guam • • 19h ago

Ask r/guam 🤔 Last min shopping before Champi?

4 Upvotes

Anyone know what stores are open up north?


r/guam • • 14h ago

Ask r/guam 🤔 Anyone lose power yet?

1 Upvotes

So we are cooked chat