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Jun 19, 20261
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Tropical Storm Arthur Soaks Gulf Coast as First Named Storm of 2026 Season
Tropical Storm Arthur, the first named storm of the 2026 Atlantic hurricane season, impacted the U.S. Gulf Coast with strong winds and heavy rain in mid-June. NASA's Terra satellite captured images of the storm's structure, and the National Weather Service warned of life-threatening flash flooding as rainfall totals approached 20 inches in some areas.
Quick Facts
Who
National Hurricane Center
What
Tropical Storm Arthur designated as a tropical storm
When
mid-June 2026
Where
U.S. Gulf Coast
- Tropical Storm Arthur designated as a tropical storm
- NASA Terra satellite captured images
- Heavy rainfall and strong winds impacted Gulf Coast
- Flash flooding warnings issued
- Storm weakened and moved inland
Tropical Storm Arthur, the first named storm of the 2026 Atlantic hurricane season, brought strong winds and heavy rainfall to the U.S. Gulf Coast in mid-June. The system was designated a tropical storm by the National Hurricane Center (NHC) on June 17, with maximum sustained winds of 40 miles per hour (65 kilometers per hour) and tropical-storm-force winds extending 175 miles (280 kilometers) from its center. At Galveston, Texas, a gust of 48 miles per hour was recorded.
NASA’s Terra satellite captured natural-color and infrared images of the storm on June 17 at 10:30 a.m. Central Time. The infrared imagery, depicting brightness temperature, highlighted cooler cloud tops against the warmer surface below, aiding meteorologists in analyzing the storm's structure and rainfall patterns. The National Weather Service warned that heavy rainfall could lead to life-threatening flash flooding, with estimates from the GPM mission showing high rain rates over Gulf waters and inland areas.
As Arthur weakened and became less organized on June 18, it continued to bring abundant moisture to central Gulf Coast states. The National Weather Service reported rainfall rates of 3 inches (7.6 centimeters) per hour in southeastern Louisiana. Forecasts indicated that storm-total rainfall amounts could exceed 12 inches (30 centimeters) in some locations, with isolated totals approaching 20 inches (51 centimeters).
Although Arthur remained below hurricane strength, its impacts were significant along the coast. The storm's tracking northeastward brought wind and rain to parts of Texas, Louisiana, and other Gulf states. Authorities urged residents to stay vigilant as the storm moved inland, with flood watches remaining in effect for affected areas.
Why This Matters
Tropical Storm Arthur marked the beginning of the 2026 Atlantic hurricane season, demonstrating the region's vulnerability to tropical weather systems. The storm's heavy rainfall and life-threatening flash flooding underscore the importance of early warning systems and preparedness measures for coastal communities. Understanding the storm's structure through satellite imagery helps meteorologists improve forecasting accuracy and allow residents and authorities to take timely protective actions.
Timeline & Sources
Jun 17, 2026
WireNational Hurricane Center designates Arthur as a tropical storm
Jun 17, 2026
WireWinds of 40 mph and heavy rainfall reported along Gulf Coast
Jun 17, 2026
WireNASA Terra satellite captures images of Tropical Storm Arthur
Jun 18, 2026
WireArthur weakens and brings moisture to central Gulf Coast states, with rainfall rates of 3 inches per hour in southeastern Louisiana