Hurricane Olivia (2018)

Basin

Eastern Pacific

Dates

September 1, 2018 to September 14, 2018

Peak strength

Category 4, 115 kt (132 mph)

Lowest pressure

951 mb (28.08 inHg)

Landfall

No; closest approach 30 km (19 mi)

Accumulated cyclone energy

25.0

Tropical-storm-force wind reached

110 nmi (204 km, 127 mi) from the center at its widest

Hurricane-force wind reached

25 nmi (46 km, 29 mi) from the center at its widest

Eyewall radius at its peak

15 nmi (28 km, 17 mi)

Overall size

200 nmi (370 km, 230 mi) to the outermost closed isobar

Peak gust in the best track

140 kt (161 mph)

Fastest the center moved

18 kt (21 mph)

Identifier

EP172018

Radar at PHMO as it neared land, Sep 12, 18:00 UTC

The sources count different things and are not added together.

NOAA’s Storm Events database, the record National Weather Service offices compile months after a storm, as compiled March 2026.

Deaths

0 (0 direct, 0 indirect)

Injuries

0

Property damage

none recorded

Crop damage

$18,000

Events recorded

34 in 2 reports from 1 states and marine areas

State by state

What was recorded

11 heavy rain, 10 high surf, 8 strong wind, 4 flash flood, 1 debris flow.

The strongest winds National Weather Service offices recorded with this storm. An estimated figure is a forecaster’s judgment from the damage, not an instrument reading.

From the Storm Events narratives, unedited.

Deep water on Ulaino Road near Hana on Maui forced its closure. Waikoloa Road near Hana was also closed because of water on the roadway. Later in the day after 1400 HST, Honokohau Stream overflowed onto the bridge in Honokohau in West Maui and closed Honoapiilani Highway in that area.

Maui, Hawaii · Flash Flood · Sep 12, 20:41 UTC

Downed trees reported on Maui at the intersection of Kawai Ola Place and Hana Highway near Hana, and two mile southeast of Nahiku along Hana Highway.

Windward Haleakala, Hawaii · Strong Wind · Sep 12, 22:06 UTC

• Unnamed tropical depressionEastern Pacific · 2018Tropical Depression30 kt · 1007 mb
• Hurricane AlettaEastern Pacific · 2018Cat 4120 kt · 943 mb
• Hurricane BudEastern Pacific · 2018Cat 4120 kt · 943 mb
• Tropical Storm CarlottaEastern Pacific · 2018Tropical Storm55 kt · 997 mb
• Tropical Storm DanielEastern Pacific · 2018Tropical Storm40 kt · 1004 mb
• Tropical Storm EmiliaEastern Pacific · 2018Tropical Storm50 kt · 997 mb
• Hurricane FabioEastern Pacific · 2018Cat 295 kt · 964 mb
• Tropical Storm GilmaEastern Pacific · 2018Tropical Storm40 kt · 1005 mb
• Unnamed tropical depressionEastern Pacific · 2018Tropical Depression30 kt · 1007 mb
• Hurricane HectorEastern Pacific · 2018Cat 4135 kt · 936 mb
• Tropical Storm IleanaEastern Pacific · 2018Tropical Storm55 kt · 998 mb
• Hurricane JohnEastern Pacific · 2018Cat 295 kt · 964 mb
• Tropical Storm KristyEastern Pacific · 2018Tropical Storm60 kt · 991 mb
• Hurricane LaneEastern Pacific · 2018 · 1 death · $250 millionCat 5140 kt · 926 mb
• Hurricane MiriamEastern Pacific · 2018Cat 285 kt · 974 mb
• Hurricane NormanEastern Pacific · 2018Cat 4130 kt · 937 mb
• Tropical Storm PaulEastern Pacific · 2018Tropical Storm40 kt · 1002 mb
• Unnamed tropical depressionEastern Pacific · 2018Tropical Depression30 kt · 1002 mb
• Hurricane RosaEastern Pacific · 2018Cat 4130 kt · 936 mb
• Hurricane WalakaEastern Pacific · 2018Cat 5140 kt · 921 mb
• Hurricane SergioEastern Pacific · 2018Cat 4120 kt · 942 mb
• Tropical Storm TaraEastern Pacific · 2018Tropical Storm55 kt · 995 mb
• Tropical Storm VicenteEastern Pacific · 2018Tropical Storm45 kt · 1002 mb
• Hurricane WillaEastern Pacific · 2018Cat 5140 kt · 925 mb
• Tropical Storm XavierEastern Pacific · 2018Tropical Storm55 kt · 995 mb

A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.

Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.

• Tropical cyclone report, National Hurricane Center
• Every advisory and discussion NHC issued while it was live
• Best track as KMZ, National Hurricane Center
• Best track as a shapefile, National Hurricane Center
• Wikipedia article: Hurricane Olivia