Track map & timeline · Eastern Pacific · August 4–10, 1991
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 Guillermo (1991) was a Category 1 hurricane of the 1991 Eastern Pacific season. It formed on August 4, 1991, 262 mi SSW of Puerto Escondido, Oaxaca, Mexico, reached its peak of 81 mph (130 km/h) and a minimum pressure of 983 mb on August 5, 1991, and never made landfall. It rapidly intensified by 40 mph in 24 hours (to 75 mph on August 5, 1991). The storm lasted 6.8 days and travelled about 2,423 miles (3,899 km).
02 · Intensity
03 · Timeline
| Date · UTC | Status | Wind | Pressure | Position | Nearest place |
|---|---|---|---|---|---|
| Aug 4 00:00 | TD | 29 mph | 1010 mb | 12.3°N 98.4°W | open ocean |
| Aug 4 06:00 | TD | 29 mph | 1009 mb | 12.9°N 99.4°W | open ocean |
| Aug 4 12:00 | TD | 35 mph | 1008 mb | 13.4°N 100.2°W | open ocean |
| Aug 4 18:00 | TS | 40 mph | 1007 mb | 13.8°N 101.1°W | open ocean |
| Aug 5 00:00 | TS | 46 mph | 1004 mb | 14.3°N 101.9°W | open ocean |
| Aug 5 06:00 | TS | 58 mph | 1000 mb | 14.7°N 102.8°W | open ocean |
| Aug 5 12:00 | Cat 1 | 75 mph | 993 mb | 15.2°N 103.7°W | open ocean |
| Aug 5 18:00 | Cat 1 | 81 mph | 985 mb | 15.6°N 104.8°W | open ocean |
| Aug 6 00:00 | Cat 1 | 81 mph | 984 mb | 15.9°N 106.3°W | open ocean |
| Aug 6 06:00 | Cat 1 | 81 mph | 983 mb | 16.2°N 107.7°W | open ocean |
| Aug 6 12:00 | Cat 1 | 81 mph | 983 mb | 16.4°N 109.0°W | open ocean |
| Aug 6 18:00 | Cat 1 | 81 mph | 983 mb | 16.5°N 110.2°W | open ocean |
| Aug 7 00:00 | Cat 1 | 81 mph | 984 mb | 16.6°N 111.4°W | open ocean |
| Aug 7 06:00 | Cat 1 | 75 mph | 987 mb | 16.8°N 112.7°W | open ocean |
| Aug 7 12:00 | TS | 69 mph | 991 mb | 17.0°N 114.0°W | open ocean |
| Aug 7 18:00 | TS | 63 mph | 995 mb | 17.2°N 115.3°W | open ocean |
| Aug 8 00:00 | TS | 58 mph | 997 mb | 17.3°N 116.6°W | open ocean |
| Aug 8 06:00 | TS | 52 mph | 1000 mb | 17.4°N 117.8°W | open ocean |
| Aug 8 12:00 | TS | 46 mph | 1002 mb | 17.5°N 119.1°W | open ocean |
| Aug 8 18:00 | TS | 46 mph | 1004 mb | 17.5°N 120.4°W | open ocean |
| Aug 9 00:00 | TS | 40 mph | 1005 mb | 17.5°N 121.9°W | open ocean |
| Aug 9 06:00 | TS | 40 mph | 1007 mb | 17.4°N 123.5°W | open ocean |
| Aug 9 12:00 | TD | 35 mph | 1008 mb | 17.3°N 125.3°W | open ocean |
| Aug 9 18:00 | TD | 35 mph | 1008 mb | 17.0°N 127.1°W | open ocean |
| Aug 10 00:00 | TD | 29 mph | 1009 mb | 16.5°N 128.9°W | open ocean |
| Aug 10 06:00 | TD | 29 mph | 1009 mb | 16.1°N 130.5°W | open ocean |
| Aug 10 12:00 | TD | 29 mph | 1009 mb | 15.6°N 132.0°W | open ocean |
| Aug 10 18:00 | TD | 29 mph | 1010 mb | 15.2°N 133.6°W | open ocean |
⬇ Download track data (CSV) · public-domain NOAA best track
Questions
No — the NOAA best-track record shows no landfall for Guillermo.
At its peak on August 5, 1991, Guillermo was a Category 1 hurricane with maximum sustained winds of 81 mph (130 km/h) and a central pressure of 983 mb.
6.8 days, from August 4, 1991 to August 10, 1991, including 48 hours at hurricane strength. It travelled about 2,423 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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