Typhoon Choi-wan Drifts Past Guam but Trailing Monsoon Surge Unlocks 18-Foot Seas and Severe Flooding Risk While the core of Super Typhoon Choi-wan avoided a direct collision with Guam, its trailing monsoon surge is battering the Mariana Islands with 18-foot waves, damaging wind gusts, and continuous rainfall. A deceptive sigh of relief swept across the western Pacific as the core of Super Typhoon Choi-wan skirted past the United States territory of Guam without making direct landfall. However, emergency managers and meteorologists quickly warned that the danger was far from over. Trailing closely behind the massive storm system, an intense monsoon surge has enveloped the Mariana Islands, unleashing ferocious winds, battering surf, and torrential downpours across vulnerable coastal and inland communities. Guam Escapes Direct Strike but Gets Caught in Monsoon Surge The circulating center of Typhoon Choi-wan tracked roughly 340 miles north of Guam, sparing the southern islands from the catastrophic inner eyewall of the storm. Warning coordination meteorologist Landon Aydlett at the Tian weather office noted that his phone was flooded with anxious messages from islanders on Saturday morning asking whether the vortex would slam directly into their homes. While confirming that the core had steered away, he underscored that the expansive footprint of the weather system left no room for complacency. Typhoon Choi-wan possesses a sprawling circulation, hurling damaging tropical storm force winds across an area extending 240 miles outward from its center. Forecasters described the setup as a double-barreled threat comprised of the departing cyclone itself and the intense monsoon surge pulled in its wake. Even though Guam and neighboring Rota managed to dodge the tightest inner wind field, both islands became ensnared in the turbulent monsoonal inflow. Peak gusts at Guam International Airport reached approximately 72 km/h, disrupting daily operations and signaling that the trailing winds packed serious force. Surface Damage, Shattered Canopies, and Blown Roadside Signs Prior to the onset of the worst conditions, weather agencies urged residents to secure loose outdoor furniture, corrugated tin roofing, and loose yard debris. Despite those warnings, the persistent rush of monsoon winds rapidly left a visible mark across the islands. Heavy political campaign billboards and commercial signs along major thoroughfares were ripped from their mountings and hurled across roadsides. Temporary canopies and metal sheds outside several storefronts and residential compounds buckled and tore under the sustained buffeting. Official wind advisories remained in effect across Guam and Rota into early Sunday morning, with forecasters anticipating localized wind gusts climbing as high as 45 mph capable of dropping tree limbs and scattering debris. Eighteen-Foot Mountainous Swells and Lethal Rip Currents The most hazardous manifestation of the storm complex developed along the coastline. Maritime authorities maintained a gale warning across regional coastal waters through Saturday evening, as open ocean swells surged between 15 and 18 feet in height. Under a concurrent high surf advisory, breaking waves crashing into north, south, and west-facing coral reefs measured between 8 and 12 feet. Beneath the breaking surf, hazardous rip currents reached life-threatening levels. Meteorologists strictly advised inexperienced swimmers against entering the water under any circumstances, warning that the powerful undertow could drag individuals out to sea without warning. Commercial and recreational mariners were equally instructed to keep vessels moored in harbor and avoid open water navigation until at least the start of the coming week. Persistent Rainfall Threat and Deceptive Dry Slots Beyond the gusty winds and violent marine conditions, inland flooding remains a primary concern. A flash flood watch stayed in effect for both Guam and Rota through late Sunday night, with anticipated precipitation totals ranging between 4 and 6 inches across saturated ground. Forecasters specifically cautioned the public not to misinterpret transient breaks in the clouds. Periodic sunshine through momentary dry slots offered a deceptive impression of improving weather. Meteorologists explained that these breaks are brief, as passing squall lines continue to pull high-altitude momentum down to ground level. These turbulent downdrafts can trigger sudden downpours and abrupt spikes in wind speed within seconds, rapidly inundating low-lying roads and urban drainage systems. Northern Islands Face Core Fury as Storm Intensifies While Guam and Rota avoided the worst brunt of the cyclone, the northern reaches of the archipelago faced severe impacts. Typhoon warnings were posted for Alamagan, Agrihan, and Pagan, where sustained winds exceeded 120 km/h. Rainfall projections across those northern islands indicated accumulation levels between 8 and 14 inches, with totals near the storm center possibly reaching up to 20 inches. Further south, tropical storm warnings were maintained over Saipan and Tinian, where gusts reaching up to 60 mph threatened to obstruct roads and inundate low-elevation properties. Environmental conditions over the ocean continued to fuel Choi-wan. After tracking past Agrihan Island as a Category 2 typhoon on Saturday, the storm tapped abundant marine moisture, raising significant concern that it could rapidly intensify into a dangerous Category 3 system. Tracking Fresh Disturbances Across the Pacific Basin While managing the fallout from Choi-wan, meteorologists also monitored Invest 94W, an emerging low-pressure disturbance developing near Majuro. While this nascent system posed no immediate hazard to the Mariana Islands, weather agencies carefully evaluated potential consequences for the northern Marshall Islands. Concurrently, forecasters continued to track Hurricane Nolo across the open Pacific, monitoring whether broad regional atmospheric shifts might spark additional storm systems over the coming days. What this means for you The monsoon surge trailing Super Typhoon Choi-wan presents severe hazards to maritime safety, coastal property, and transport across the Mariana Islands. • For Maritime Safety: Marine conditions featuring 15 to 18-foot waves and lethal rip currents have made coastal waters extremely dangerous for all activities. Boaters and beachgoers must avoid open waters and shorelines until at least early next week. • In Guam and Rota: Wind gusts up to 45 mph and airport speeds near 72 km/h have torn away temporary canopies and dislodged roadside campaign boards. Residents need to secure all unfastened outdoor items and watch out for falling branches or debris. • For Flood Risks: Flash flood watches forecasting 4 to 6 inches of rain mean ground saturation could swiftly submerge low-lying streets and drainage corridors. Motorists should not attempt to drive through pooled water despite temporary dry intervals of sunshine. • Across Northern Islands: Winds exceeding 120 km/h and rain reaching up to 20 inches in Alamagan, Agrihan, and Pagan create severe structural hazards. Inhabitants in these northern areas must remain indoors and follow emergency shelter protocols. Why this happened The worsening conditions despite Guam avoiding a direct hit stem from Typhoon Choi-wan's immense wind field and an intense trailing monsoon surge pulled across the Pacific basin. • Direct Physical Cause: Although the storm center tracked 340 miles north of Guam, its circulation footprint spanned 240 miles outward from the eye. This wide radius ensured that strong peripheral winds and massive ocean swell hammered the southern islands. • Monsoon Surge Mechanism: The rapid movement of the central vortex created a powerful atmospheric wake that pulled in a deep monsoonal surge. This trailing channel of moisture generated localized gusts near 72 km/h and triggered sudden, heavy squalls over Guam and Rota. • Ocean Heat Intensification: Warm ocean waters provided continuous thermodynamic fuel to Choi-wan as it brushed past Agrihan as a Category 2 system. The influx of marine energy allowed the storm to maintain rapid momentum toward potential Category 3 status. • Regional Pressure Dynamics: Atmospheric instability across Micronesia, underscored by the proximity of Invest 94W near Majuro and Hurricane Nolo, reinforced the broad convergence of unsettled monsoon winds. Questions & Answers 1. Did Typhoon Choi-wan make direct landfall on Guam? No, the eye of the typhoon passed approximately 340 miles north of Guam, sparing the island from a direct core impact. 2. Why are Guam and Rota experiencing severe weather if the storm missed them? The typhoon dragged an intense monsoon surge behind it, unleashing strong wind gusts, heavy rain, and rough seas across both islands. 3. How high are the waves reaching along the coast? Open water seas are surging between 15 and 18 feet under a gale warning, with 8 to 12-foot breakers crashing onto reefs. 4. How much rainfall is expected across Guam and Rota? A flood watch is in place predicting between 4 and 6 inches of rainfall through late Sunday night. 5. What conditions are affecting the northern islands like Agrihan and Pagan? Under typhoon warnings, they face winds over 120 km/h and rainfall between 8 and 14 inches, potentially reaching 20 inches near the center. 6. Are there other tropical systems being monitored in the Pacific? Yes, meteorologists are tracking Invest 94W near Majuro as well as Hurricane Nolo further across the Pacific basin. https://trendkia.com/en/america/guam-ke-pasa-se-gujarane-ke-bada-supara-typhoon-choi-wan-ka-naya-snkata-manasuna-sarja-se-samudra-men-uthin-18-phita-unchi-laharen-42523 TrendKia — Har trend, sabse pehle.