Introduction: Saint Thomas in the Hurricane Corridor
Saint Thomas occupies one of the most active hurricane corridors in the Eastern Caribbean. The island's geographic position, roughly 65 km40 miles east-southeast of Puerto Rico and situated in the northern Leeward Islands, places it directly in the path of tropical systems moving west-northwest across the Atlantic during hurricane season. The island's mountainous terrain, dense development, and location in the trade wind belt create compounding vulnerabilities: high winds funnel through valleys, rainfall accumulates rapidly on steep slopes triggering mudslides, and the concentrated built environment amplifies damage from strong storms.
The historical record spanning nearly a century shows that Saint Thomas has been struck or severely affected by major hurricanes with troubling regularity. Unlike some Caribbean islands that may see decades between direct hits, Saint Thomas has experienced multiple devastating storms within single decades, most notably in the 1995-1999 period and again in 2017. Understanding this history is essential for residents, visitors, and emergency managers seeking to comprehend the island's vulnerability and the evolution of preparedness across the US Virgin Islands.
Historical Record: The Early Storms
The San Felipe II Hurricane (Okeechobee), September 1928
The most powerful hurricane documented in the vicinity of Saint Thomas occurred on September 13, 1928. Known as the San Felipe II Hurricane (later also called the Okeechobee Hurricane after its devastating impact in Florida), this storm reached Category 5 intensity with maximum sustained winds near 255 km/h160 mph. The hurricane passed just south of Saint Thomas, tracking from the east-southeast, bringing extreme winds and heavy rainfall that caused severe damage across the island.
The storm's passage coincided with a request for federal disaster assistance to the United States President, underscoring the extent of destruction. Accurate casualty and damage figures specific to Saint Thomas from this 1928 event are difficult to isolate from broader territory-wide records, as systematic documentation of Caribbean hurricane impacts was not standardized at that time. However, the storm's power and proximity made it a defining reference point for the island's hurricane exposure and would remain the most intense storm to directly impact the territory until nearly 90 years later.
Hurricane Donna, September 1960
Hurricane Donna passed just north of Saint Thomas on September 5, 1960, with maximum sustained winds near 205 km/h130 mph approaching from the east-southeast. While Donna did not strike Saint Thomas directly, the northern track and strong winds caused moderate to significant impacts. The storm killed 107 people across the northern Antilles and Puerto Rico, though most of this fatality toll occurred in Puerto Rico and other locations along its track.
Donna's passage served as a reminder that even near-miss storms can produce dangerous conditions across the island.
Modern Era: From 1989 to the Present
Hurricane Hugo, September 1989
Hurricane Hugo marked a turning point in modern hurricane awareness and preparedness across the US Virgin Islands. On September 18, 1989, the Category 4 hurricane tracked south of Saint Thomas with maximum sustained winds near 210 km/h130 mph. While Hugo's eye passed directly over Saint Croix to the south, Saint Thomas was not spared.
The island experienced extensive damage to structures and infrastructure, particularly on its south shore, which faced the strongest winds on the hurricane's northern eyewall. Power outages, downed trees, damaged roofs, and compromised water systems affected the territory in the storm's aftermath.
Hugo's impact proved to be a watershed moment for emergency preparedness, building codes, and community planning across the USVI. The storm demonstrated the vulnerability of the infrastructure and prompted upgrades to emergency management systems in subsequent years.
The Luis-Marilyn One-Two Punch, 1995
The period from 1995 to 1999 proved to be extraordinarily active for Saint Thomas and the broader US Virgin Islands. In 1995 alone, the territory was struck by two major hurricanes in rapid succession, a pattern that would repeat just 22 years later.
Hurricane Luis preceded Hurricane Marilyn by nine days in early-to-mid September 1995. While Luis caused damage across the territory, it was Hurricane Marilyn that inflicted the most severe and localized destruction on Saint Thomas.
Hurricane Marilyn, September 1995
Hurricane Marilyn became a benchmark storm in Saint Thomas hurricane history. On September 15, 1995, the Category 2 hurricane's eyewall passed directly over the western portion of Saint Thomas. The airport recorded sustained winds of 170 km/h105 mph with gusts reaching 210 km/h130 mph.
These measurements underestimate the intensity in the eyewall itself, where conditions were considerably more severe.
Marilyn's direct passage across western Saint Thomas caused catastrophic damage. Approximately 80% of buildings on the island were destroyed or damaged. The storm stripped roofs, collapsed walls, snapped utility poles, and rendered many structures uninhabitable.
Damage estimates across the entire territory reached $2.1 billion, with the majority of destruction concentrated on Saint Thomas. The hurricane's impact became the reference point for structural vulnerability assessments and building code reforms that would follow.
The damage from Marilyn was compounded by the fact that the territory was simultaneously recovering from Hurricane Luis and would face additional strikes in the years immediately following: Bertha struck in 1996, and Hortense, Erika, Georges, Jose, Lenny, and Debby followed in succession through 1999. This four-year window from 1995 to 1999, during which six hurricanes struck the territory, created a recovery environment where each new storm interrupted reconstruction efforts from the previous one.
The Quiet Years: 2000-2016
The 17-year period from 2000 through 2016 saw no direct hurricane strikes on Saint Thomas, a respite that allowed for sustained rebuilding, infrastructure improvements, and code upgrades. While other parts of the Caribbean experienced significant storms during this period, Saint Thomas was largely spared from direct impacts. This quiet period, however, may have created a false sense of security and allowed complacency in preparedness to develop, particularly among residents with no living memory of Hurricane Marilyn or earlier storms.
Hurricane Irma, September 2017
Hurricane Irma shattered the 17-year pause and struck Saint Thomas with unprecedented ferocity on September 6, 2017. Irma reached Category 5 intensity, becoming the most powerful hurricane to make a direct hit on Saint Thomas in recorded history. The southern eyewall of the hurricane passed directly over the island with maximum sustained winds near 300 km/h185 mph.
The destruction was total and transformative. Irma stripped vegetation from hillsides across the island, leaving bare rock and soil where forests had stood. The storm destroyed or severely damaged the majority of buildings.
Electricity infrastructure, already challenged by earlier storms, was obliterated: poles were snapped, lines were severed, and transformers were destroyed. Schools, homes, hospitals, hotels, and businesses suffered catastrophic damage. Roads became impassable due to debris and mudslides.
Water systems failed. Three people died on the island in the immediate aftermath.
Survivors reported an eerie calm in the afternoon hours as the eye passed over, followed by a second onslaught of extreme winds from the opposite direction as the back eyewall arrived. The damage was so severe that normal emergency response systems struggled to function in the immediate aftermath: communication infrastructure failed, hospitals were damaged, and supply chains were disrupted.
Hurricane Maria, September 2017
Just 14 days after Hurricane Irma devastated Saint Thomas, Hurricane Maria approached the US Virgin Islands on September 19, 2017. Although Maria, also a Category 5 hurricane at peak intensity, passed to the south of Saint Thomas on its way to Saint Croix and Puerto Rico, the island did not escape impact. Saint Thomas experienced tropical-storm-force winds and heavy rainfall that triggered flooding and destructive mudslides in areas already destabilized by Irma's passage.
The combination of the two storms created a compounding disaster. Areas stripped of vegetation by Irma became vulnerable to erosion and mudslides under Maria's rainfall. Structures damaged but still standing from Irma sustained additional wind and water damage.
Most critically, recovery operations were halted as residents and emergency personnel took shelter ahead of Maria's approach. Hospital staff, in the midst of operating from damaged facilities after Irma, were ordered to disassemble emergency tents and seek shelter on September 19.
The combined damage from Hurricanes Irma and Maria across the entire US Virgin Islands was estimated at $10.8 billion, making this the costliest hurricane event in the territory's recorded history. Roughly 90% of this damage was concentrated on Saint Thomas and Saint John. Full power restoration took months, with some areas remaining without electricity into late 2017 and early 2018.
The psychological and economic impact reverberated through the subsequent years, with residents relocating and recovery proving slower than after any previous storm.
Recent Tracking Data: 2025
The Dewedda.com storm archive tracks storms passing near Saint Thomas. In 2025, two systems have been monitored in proximity to the island:
Erin (Potential Tropical Cyclone) reached peak winds of 259 km/h161 mph and came within approximately 209 km130 miles of Saint Thomas. While Erin did not bring direct impacts to the island, the close approach during favorable Atlantic conditions underscores the ongoing threat posed by powerful systems in the region.
Jerry (Potential Tropical Cyclone) produced peak winds of 80 km/h50 mph and passed at a distance of approximately 237 km147 miles from Saint Thomas, generating only minimal impacts to the island.
Patterns and Preparedness Lessons
Frequency and Intensity
The historical record reveals several important patterns about Saint Thomas's hurricane exposure. First, direct strikes or near-miss significant impacts occur more frequently than many residents realize. Within the documented modern era (1928-present), Saint Thomas has experienced or been severely affected by major hurricanes at an average rate of roughly one significant event every 15-20 years, though this average masks clustering: the 1995-1999 period saw six strikes in four years, while 2000-2016 saw none.
Second, the island is vulnerable not only to direct strikes but also to storms passing nearby. Hurricanes tracking as close as 65 km40 miles south or north can produce destructive winds, heavy rainfall, and rough seas. The geography of the Lesser Antilles means few directions of approach are truly safe.
Third, the intensity of recorded storms has been severe. Four of the six most documented significant impacts (1928, 1989, Marilyn 1995, and Irma 2017) involved Category 4 or 5 intensity, or near-Category 5 conditions. This reflects Saint Thomas's position in a corridor where storms maintain or intensify strength before striking the island.
Building Codes and Infrastructure Resilience
Saint Thomas's hurricane history has driven progressive improvements in building codes and infrastructure standards. Following Hurricane Hugo (1989), the USVI began upgrading emergency management protocols and adopting stricter building codes. Hurricane Marilyn (1995) prompted further refinements to residential and commercial construction standards, particularly regarding roof attachments, window and door reinforcement, and foundation standards.
Post-2017, building codes were again reviewed and tightened, though reconstruction challenges and the scale of the damage have prolonged the implementation period.
Despite these improvements, the island's building stock remains heterogeneous, with older structures predating modern codes still occupied, and informal structures built outside regulatory frameworks remaining common in some areas. Infrastructure hardening, particularly for water and electricity systems, has progressed slowly relative to the risk.
Hurricane Season Timing
All significant documented hurricanes affecting Saint Thomas have occurred between early September and mid-September, with the exception of a few storms occurring in early October. The island's peak vulnerability window appears to be September 5-20, coinciding with the climatological peak of Atlantic hurricane season. Preparedness calendars and emergency drills should emphasize this window, though season-long vigilance remains necessary.
Community Preparedness and Response Capabilities
The progression of impacts from Hugo (1989) to Marilyn (1995) to Irma (2017) reveals both improving warning systems and persistent gaps in response capacity. Hurricane Irma, despite being a known threat with days of warning, overwhelmed local emergency management, with the primary hospital suffering damage even before the peak winds arrived. The reason was likely not lack of knowledge but the sheer scale of the storm's impact exceeding pre-event planning assumptions.
The compressed timeline between Irma (September 6) and Maria (September 19, 2017) exposed another vulnerability: insufficient time and resources for recovery operations between sequential storms. Generators, fuel, heavy equipment, and personnel were all exhausted or damaged by the first storm before the second arrived, limiting mitigation efforts ahead of Maria's approach.
Looking Forward
Saint Thomas faces the dual challenge of living in an active hurricane corridor while bearing the cumulative vulnerabilities and fatigue from recent major events. The 17-year quiet period from 2000-2016 likely softened institutional memory and emergency readiness. Updated building codes and infrastructure standards exist but their implementation remains uneven across the island.
Evacuation routes, sheltering capacity, fuel storage, and emergency communication systems have been upgraded since 2017 but continue to be tested annually.
The convergence of climate factors that have already produced Category 5 storms in proximity to Saint Thomas remain present. Future hurricane seasons will continue to pose significant risk to the island. The historical record demonstrates that preparedness, early warning systems, resilient infrastructure, and community coordination are not luxuries but necessities for islands in the hurricane belt.