|name=. Remove this parameter; the article title is used as the name by default. Hurricane Iselle at peak intensity with annular characteristics on August 4 | |
| Meteorological history | |
|---|---|
| Formed | July 31, 2014 |
| Dissipated | August 11, 2014 |
| Category 4 major hurricane | |
| 1-minute sustained (SSHWS/NWS) | |
| Highest winds | 140 mph (220 km/h) |
| Lowest pressure | 947 mbar (hPa); 27.96 inHg |
| Overall effects | |
| Fatalities | 1 direct |
| Damage | $148 million (2014 USD) |
| Areas affected | Hawaii |
| IBTrACS | |
Part of the 2014 Pacific hurricane season | |
Hurricane Iselle was the strongest tropical cyclone to make landfall on the island of Hawaii in recorded history. The tenth named storm, fifth hurricane, and fourth major hurricane of the 2014 hurricane season, Iselle developed from an area of disturbed weather southwest of Mexico on July 31, 2014. Assuming a west-northwest course that it would maintain throughout its existence, generally favorable atmospheric conditions allowed for gradual strengthening, with the cyclone attaining hurricane status a day after formation. Continued strengthening progressed for several days up until August 4, when Iselle reached peak intensity with maximum sustained winds of 140 mph (220 km/h) and a minimum barometric pressure of 947 mbar (hPa; 27.96 inHg), making it a Category 4 hurricane. Thereafter, Iselle encountered hostile environmental conditions and quickly weakened before making landfall on the Big Island on August 8 as a moderate tropical storm. Its passage over the island disrupted the cyclone, and Iselle later dissipated on August 9.
Widespread precautionary measures took place across Hawaii as forecasts indicated the potential for a Hawaiian landfall as early as August 2. Then-governor Neil Abercrombie signed an emergency proclamation into effect, and numerous government facilities were closed. Several airlines cancelled flights servicing the archipelago. Upon making landfall, Iselle brought torrential rainfall and caused strong winds which resulted in widespread power outages and downed trees. The storm caused heavy crop damage, estimated at $79.2 million (2014 USD), including 60% of the state's papaya that was lost. This was enough to be classified as an agriculture disaster, and was eventually declared a disaster by Federal Emergency Management Agency after initially being denied. The storm also killed one person on Kauai as a result of flooding.