The 1990 season

Hurricane Boris (1990)

Hurricane Boris reached Category 1 in the Eastern Pacific between June 2, 1990 and June 8, 1990, with a lowest pressure of 977 mb.

Track and intensity

The whole track of Hurricane Boris, colored by strength, with the other storms of the 1990 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.

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The storm

Basin
Eastern Pacific
Dates
June 2, 1990 to June 8, 1990
Peak strength
Category 1, 80 kt (92 mph)
Lowest pressure
977 mb (28.85 inHg)
Landfall
No; closest approach 380 km (236 mi)
Accumulated cyclone energy
5.1
Fastest the center moved
21 kt (24 mph)
Identifier
EP021990

Deaths and damage

No source this site reads publishes a machine-readable casualty or damage figure for a storm of this era. The National Hurricane Center’s season tables begin in 1995 and carry deaths and damage only from 2005 in the Atlantic and 2020 in both basins; the US Storm Events record begins in 1996.

Rainfall

The Weather Prediction Center attributes 702 rain gauge totals over the contiguous United States to this storm. The wettest reached 3.28 inches (83 mm).

StationTotalPosition
SANTA RITA EXP RANGE3.28 in (83 mm)31.77N 110.85W
BARTHOLOMEW POWERHOUSE2.34 in (59 mm)40.17N 111.50W
FILLMORE2.27 in (58 mm)38.97N 112.33W
LUND2.00 in (51 mm)38.87N 115.02W
SCOFIELD-SKYLINE MINE1.82 in (46 mm)39.68N 111.20W
ELECTRIC LAKE1.77 in (45 mm)39.60N 111.22W
BLACK ROCK1.67 in (42 mm)38.72N 112.95W
PROVO BYU1.66 in (42 mm)40.25N 111.65W
FAIRVIEW1.63 in (41 mm)39.62N 111.43W
BLOWHARD MOUNTAIN RADAR1.56 in (40 mm)37.60N 112.87W
DEER CREEK DAM1.55 in (39 mm)40.40N 111.53W
BEAVER CANYON PH1.50 in (38 mm)38.27N 112.48W

WPC’s storm rainfall file, 1900 to 2020, compiled by David Roth.

Track

Time (UTC)PositionWindPressureStatus
Jun 2, 18:0010.7N 100.3W25 kt1010 mbTropical depression
Jun 3, 00:0011.9N 101.4W25 kt1010 mbTropical depression
Jun 3, 06:0012.8N 102.8W25 kt1009 mbTropical depression
Jun 3, 12:0013.1N 104.7W30 kt1008 mbTropical depression
Jun 3, 18:0013.1N 106.8W30 kt1007 mbTropical depression
Jun 4, 00:0013.1N 108.8W35 kt1005 mbTropical storm
Jun 4, 06:0013.3N 110.1W45 kt1000 mbTropical storm
Jun 4, 12:0013.4N 111.0W50 kt995 mbTropical storm
Jun 4, 18:0013.8N 111.6W60 kt992 mbTropical storm
Jun 5, 00:0014.6N 112.1W65 kt987 mbHurricane
Jun 5, 06:0015.6N 112.8W75 kt981 mbHurricane
Jun 5, 12:0016.7N 113.4W80 kt977 mbHurricane
Jun 5, 18:0017.7N 114.0W80 kt978 mbHurricane
Jun 6, 00:0018.6N 114.4W75 kt979 mbHurricane
Jun 6, 06:0019.5N 114.9W70 kt980 mbHurricane
Jun 6, 12:0020.2N 115.2W60 kt985 mbTropical storm
Jun 6, 18:0020.8N 115.5W55 kt995 mbTropical storm
Jun 7, 00:0021.4N 115.8W45 kt1000 mbTropical storm
Jun 7, 06:0022.0N 115.8W30 kt1006 mbTropical depression
Jun 7, 12:0022.6N 115.8W30 kt1007 mbTropical depression
Jun 7, 18:0023.2N 115.7W25 kt1008 mbTropical depression
Jun 8, 00:0023.7N 115.9W25 kt1009 mbTropical depression
Jun 8, 06:0024.1N 116.2W20 kt1010 mbTropical depression
Jun 8, 12:0024.4N 116.7W20 kt1010 mbTropical depression

Other Eastern Pacific storms of 1990

What this means

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.

Sources

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.

The National Hurricane Center has published no tropical cyclone report for this storm.