NHC AL051931 · Atlantic basin
Unnamed Tropical Storm of 1931
September 1, 1931 – September 4, 1931
Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated
Tropical Storm Unnamed 1931 storm peaked at Tropical storm with 46 mph sustained winds and passed within 75 miles of 3 US cities, 0 of them while still at hurricane strength.
The 1931 storm in the record
HURDAT2 tracks the unnamed storm of 1931 (AL051931) from September 1, 1931 to September 4, 1931; its peak was 46 mph (tropical storm). Its centre passed within 75 miles of 3 US cities, all in Puerto Rico. The strongest pass was 40 mph (tropical storm) 71 miles from San Antonio, PR.
- Peak strength
- Tropical storm
- Cities within 75 mi
- 3
- At hurricane strength
- 0
- States
- 1
46 mph
when closest
Cities Unnamed 1931 storm passed near, strongest first
Puerto Rico (3)
- San AntonioTropical storm · 71 mi
- AguadillaTropical storm · 72 mi
- IsabelaTropical storm · 74 mi
Other storms of the 1931 season
- Unnamed (AL011931)Tropical storm · 37 cities
- Unnamed (AL021931)Tropical storm · 167 cities
- Unnamed (AL041931)Tropical storm · 51 cities
- Unnamed (AL071931)Category 2 · 86 cities
About this record
The track is the National Hurricane Center's best-track record, revised after the season with every observation available. Strength at a city is the sustained wind on the track at the closest point, not the wind that city measured.