Track map & timeline · Eastern Pacific · September 8–13, 1979
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 (1979) was a Category 1 hurricane of the 1979 Eastern Pacific season. It formed on September 8, 1979, 93 mi SW of Acapulco de Juárez, Guerrero, Mexico, reached its peak of 75 mph (120 km/h) on September 11, 1979, and never made landfall. The storm lasted 4.8 days and travelled about 768 miles (1,236 km).
02 · Intensity
03 · Timeline
| Date · UTC | Status | Wind | Pressure | Position | Nearest place |
|---|---|---|---|---|---|
| Sep 8 18:00 | TD | 35 mph | — | 16.0°N 101.0°W | 93 mi SW of Acapulco de Juárez, Guerrero, Mexico |
| Sep 9 00:00 | TD | 35 mph | — | 16.3°N 102.5°W | 112 mi SW of Ixtapa-Zihuatanejo, Guerrero, Mexico |
| Sep 9 06:00 | TS | 46 mph | — | 16.8°N 103.9°W | 138 mi SW of Ciudad Lázaro Cárdenas, Michoacán, Mexico |
| Sep 9 12:00 | TS | 46 mph | — | 17.3°N 105.2°W | 138 mi SSW of Manzanillo, Colima, Mexico |
| Sep 9 18:00 | TS | 46 mph | — | 17.8°N 106.2°W | 146 mi SW of Cihuatlán, Jalisco, Mexico |
| Sep 10 00:00 | TS | 52 mph | — | 18.3°N 106.8°W | 160 mi WSW of Cihuatlán, Jalisco, Mexico |
| Sep 10 06:00 | TS | 46 mph | — | 18.9°N 107.4°W | 184 mi SW of Puerto Vallarta, Jalisco, Mexico |
| Sep 10 12:00 | TS | 40 mph | — | 19.5°N 108.0°W | open ocean |
| Sep 10 18:00 | TS | 46 mph | — | 20.1°N 108.9°W | open ocean |
| Sep 11 00:00 | TS | 52 mph | — | 20.6°N 109.7°W | 159 mi S of Cabo San Lucas, Baja California Sur, Mexico |
| Sep 11 06:00 | TS | 52 mph | — | 20.8°N 109.9°W | 144 mi S of Cabo San Lucas, Baja California Sur, Mexico |
| Sep 11 12:00 | TS | 58 mph | — | 20.9°N 110.3°W | 140 mi S of Cabo San Lucas, Baja California Sur, Mexico |
| Sep 11 18:00 | Cat 1 | 75 mph | — | 21.1°N 110.5°W | 129 mi SSW of Cabo San Lucas, Baja California Sur, Mexico |
| Sep 12 00:00 | Cat 1 | 75 mph | — | 21.6°N 110.6°W | 99 mi SSW of Cabo San Lucas, Baja California Sur, Mexico |
| Sep 12 06:00 | TS | 69 mph | — | 21.6°N 110.6°W | 99 mi SSW of Cabo San Lucas, Baja California Sur, Mexico |
| Sep 12 12:00 | TS | 58 mph | — | 21.6°N 110.6°W | 99 mi SSW of Cabo San Lucas, Baja California Sur, Mexico |
| Sep 12 18:00 | TS | 40 mph | — | 21.6°N 110.6°W | 99 mi SSW of Cabo San Lucas, Baja California Sur, Mexico |
| Sep 13 00:00 | TD | 29 mph | — | 21.6°N 110.6°W | 99 mi SSW of Cabo San Lucas, Baja California Sur, Mexico |
| Sep 13 06:00 | TD | 29 mph | — | 21.6°N 110.6°W | 99 mi SSW of Cabo San Lucas, Baja California Sur, Mexico |
| Sep 13 12:00 | TD | 23 mph | — | 21.6°N 110.6°W | 99 mi SSW of Cabo San Lucas, Baja California Sur, Mexico |
⬇ 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 September 11, 1979, Guillermo was a Category 1 hurricane with maximum sustained winds of 75 mph (120 km/h).
4.8 days, from September 8, 1979 to September 13, 1979, including 12 hours at hurricane strength. It travelled about 768 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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