Track map & timeline · Eastern Pacific · July 19–31, 1990
TD TS Cat 1 2 3 4 5 · dashed = post-tropical / remnant low. Click any point or table row to jump there.
01 · The story
Hurricane Hernan (1990) was a Category 4 hurricane of the 1990 Eastern Pacific season. It formed on July 19, 1990, reached its peak of 155 mph (250 km/h) and a minimum pressure of 928 mb on July 23, 1990, and never made landfall. It rapidly intensified by 58 mph in 24 hours (to 121 mph on July 22, 1990). The storm lasted 11.5 days and travelled about 2,451 miles (3,944 km).
02 · Intensity
03 · Timeline
| Date · UTC | Status | Wind | Pressure | Position | Nearest place |
|---|---|---|---|---|---|
| Jul 19 12:00 | TD | 29 mph | 1012 mb | 12.0°N 106.5°W | open ocean |
| Jul 19 18:00 | TD | 29 mph | 1012 mb | 12.0°N 107.4°W | open ocean |
| Jul 20 00:00 | TD | 29 mph | 1011 mb | 12.1°N 108.3°W | open ocean |
| Jul 20 06:00 | TD | 35 mph | 1011 mb | 12.2°N 109.3°W | open ocean |
| Jul 20 12:00 | TD | 35 mph | 1010 mb | 12.3°N 109.9°W | open ocean |
| Jul 20 18:00 | TD | 35 mph | 1008 mb | 12.6°N 110.6°W | open ocean |
| Jul 21 00:00 | TS | 40 mph | 1004 mb | 12.9°N 111.3°W | open ocean |
| Jul 21 06:00 | TS | 52 mph | 1000 mb | 13.3°N 112.0°W | open ocean |
| Jul 21 12:00 | TS | 63 mph | 996 mb | 13.8°N 112.7°W | open ocean |
| Jul 21 18:00 | Cat 1 | 75 mph | 989 mb | 14.3°N 113.2°W | open ocean |
| Jul 22 00:00 | Cat 1 | 86 mph | 978 mb | 14.8°N 113.7°W | open ocean |
| Jul 22 06:00 | Cat 2 | 104 mph | 965 mb | 15.3°N 114.2°W | open ocean |
| Jul 22 12:00 | Cat 3 | 121 mph | 954 mb | 15.7°N 114.8°W | open ocean |
| Jul 22 18:00 | Cat 4 | 132 mph | 945 mb | 16.2°N 115.3°W | open ocean |
| Jul 23 00:00 | Cat 4 | 144 mph | 939 mb | 16.6°N 115.9°W | open ocean |
| Jul 23 06:00 | Cat 4 | 150 mph | 933 mb | 17.0°N 116.5°W | open ocean |
| Jul 23 12:00 | Cat 4 | 155 mph | 929 mb | 17.3°N 117.2°W | open ocean |
| Jul 23 18:00 | Cat 4 | 155 mph | 928 mb | 17.5°N 117.9°W | open ocean |
| Jul 24 00:00 | Cat 4 | 150 mph | 929 mb | 17.6°N 118.5°W | open ocean |
| Jul 24 06:00 | Cat 4 | 144 mph | 933 mb | 17.8°N 119.0°W | open ocean |
| Jul 24 12:00 | Cat 4 | 138 mph | 939 mb | 17.9°N 119.6°W | open ocean |
| Jul 24 18:00 | Cat 4 | 132 mph | 945 mb | 18.0°N 120.1°W | open ocean |
| Jul 25 00:00 | Cat 4 | 132 mph | 949 mb | 18.2°N 120.7°W | open ocean |
| Jul 25 06:00 | Cat 3 | 127 mph | 951 mb | 18.3°N 121.3°W | open ocean |
| Jul 25 12:00 | Cat 3 | 127 mph | 952 mb | 18.4°N 121.9°W | open ocean |
| Jul 25 18:00 | Cat 3 | 127 mph | 954 mb | 18.5°N 122.6°W | open ocean |
| Jul 26 00:00 | Cat 3 | 121 mph | 955 mb | 18.7°N 123.3°W | open ocean |
| Jul 26 06:00 | Cat 3 | 121 mph | 956 mb | 19.0°N 124.0°W | open ocean |
| Jul 26 12:00 | Cat 3 | 115 mph | 961 mb | 19.2°N 124.8°W | open ocean |
| Jul 26 18:00 | Cat 2 | 104 mph | 967 mb | 19.4°N 125.7°W | open ocean |
| Jul 27 00:00 | Cat 1 | 92 mph | 972 mb | 19.6°N 126.5°W | open ocean |
| Jul 27 06:00 | Cat 1 | 86 mph | 977 mb | 19.8°N 127.3°W | open ocean |
| Jul 27 12:00 | Cat 1 | 81 mph | 982 mb | 19.9°N 128.2°W | open ocean |
| Jul 27 18:00 | Cat 1 | 75 mph | 986 mb | 20.0°N 129.0°W | open ocean |
| Jul 28 00:00 | TS | 69 mph | 990 mb | 20.0°N 129.9°W | open ocean |
| Jul 28 06:00 | TS | 63 mph | 993 mb | 20.1°N 130.9°W | open ocean |
| Jul 28 12:00 | TS | 58 mph | 996 mb | 20.2°N 131.8°W | open ocean |
| Jul 28 18:00 | TS | 52 mph | 998 mb | 20.4°N 132.7°W | open ocean |
| Jul 29 00:00 | TS | 52 mph | 1000 mb | 20.7°N 133.6°W | open ocean |
| Jul 29 06:00 | TS | 46 mph | 1002 mb | 21.0°N 134.5°W | open ocean |
| Jul 29 12:00 | TS | 40 mph | 1004 mb | 21.5°N 135.3°W | open ocean |
| Jul 29 18:00 | TS | 40 mph | 1006 mb | 22.0°N 136.0°W | open ocean |
| Jul 30 00:00 | TD | 35 mph | 1008 mb | 22.8°N 136.7°W | open ocean |
| Jul 30 06:00 | TD | 35 mph | 1009 mb | 23.6°N 137.3°W | open ocean |
| Jul 30 12:00 | TD | 35 mph | 1010 mb | 24.5°N 137.8°W | open ocean |
| Jul 30 18:00 | TD | 29 mph | 1010 mb | 25.3°N 138.2°W | open ocean |
| Jul 31 00:00 | TD | 29 mph | 1011 mb | 26.2°N 138.5°W | open ocean |
⬇ Download track data (CSV) · public-domain NOAA best track
Questions
No — the NOAA best-track record shows no landfall for Hernan.
At its peak on July 23, 1990, Hernan was a Category 4 hurricane with maximum sustained winds of 155 mph (250 km/h) and a central pressure of 928 mb.
11.5 days, from July 19, 1990 to July 31, 1990, including 150 hours at hurricane strength (102 as a major hurricane). It travelled about 2,451 miles.
The 6-hourly positions, winds, pressure and wind radii are available as CSV on this page (track.csv) — they come from the NOAA National Hurricane Center's HURDAT2 database and are in the public domain.
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