Track map & timeline · Eastern Pacific · August 23 – September 2, 1978
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 Miriam (1978) was a Category 1 hurricane of the 1978 Eastern Pacific season. It formed on August 23, 1978, reached its peak of 92 mph (148 km/h) on August 29, 1978, and never made landfall. It rapidly intensified by 46 mph in 24 hours (to 86 mph on August 28, 1978). The storm lasted 9.3 days and travelled about 3,771 miles (6,068 km).
02 · Intensity
03 · Timeline
| Date · UTC | Status | Wind | Pressure | Position | Nearest place |
|---|---|---|---|---|---|
| Aug 23 18:00 | TD | 29 mph | — | 10.8°N 115.2°W | open ocean |
| Aug 24 00:00 | TD | 35 mph | — | 10.8°N 116.0°W | open ocean |
| Aug 24 06:00 | TD | 35 mph | — | 11.4°N 117.0°W | open ocean |
| Aug 24 12:00 | TD | 35 mph | — | 11.5°N 118.2°W | open ocean |
| Aug 24 18:00 | TD | 35 mph | — | 10.9°N 119.8°W | open ocean |
| Aug 25 00:00 | TD | 35 mph | — | 11.0°N 121.3°W | open ocean |
| Aug 25 06:00 | TD | 29 mph | — | 11.2°N 123.0°W | open ocean |
| Aug 25 12:00 | TD | 29 mph | — | 11.5°N 125.0°W | open ocean |
| Aug 25 18:00 | TD | 29 mph | — | 11.9°N 127.0°W | open ocean |
| Aug 26 00:00 | TD | 29 mph | — | 12.1°N 129.0°W | open ocean |
| Aug 26 06:00 | TD | 29 mph | — | 12.6°N 130.4°W | open ocean |
| Aug 26 12:00 | TD | 29 mph | — | 12.6°N 132.0°W | open ocean |
| Aug 26 18:00 | TD | 29 mph | — | 12.8°N 133.5°W | open ocean |
| Aug 27 00:00 | TS | 40 mph | — | 13.2°N 134.8°W | open ocean |
| Aug 27 06:00 | TS | 40 mph | — | 13.5°N 136.1°W | open ocean |
| Aug 27 12:00 | TS | 40 mph | — | 13.3°N 137.5°W | open ocean |
| Aug 27 18:00 | TS | 40 mph | — | 12.7°N 138.8°W | open ocean |
| Aug 28 00:00 | TS | 63 mph | — | 13.0°N 140.0°W | open ocean |
| Aug 28 06:00 | TS | 69 mph | — | 13.0°N 141.5°W | open ocean |
| Aug 28 12:00 | Cat 1 | 81 mph | — | 13.4°N 143.0°W | open ocean |
| Aug 28 18:00 | Cat 1 | 86 mph | — | 14.1°N 144.0°W | open ocean |
| Aug 29 00:00 | Cat 1 | 92 mph | — | 15.1°N 145.3°W | open ocean |
| Aug 29 06:00 | Cat 1 | 81 mph | — | 15.2°N 146.5°W | open ocean |
| Aug 29 12:00 | TS | 69 mph | — | 15.2°N 147.8°W | open ocean |
| Aug 29 18:00 | TS | 58 mph | — | 16.3°N 149.2°W | open ocean |
| Aug 30 00:00 | TS | 52 mph | — | 15.8°N 150.2°W | open ocean |
| Aug 30 06:00 | TS | 52 mph | — | 16.7°N 151.2°W | open ocean |
| Aug 30 12:00 | TS | 52 mph | — | 17.0°N 152.7°W | open ocean |
| Aug 30 18:00 | TS | 52 mph | — | 16.0°N 154.0°W | open ocean |
| Aug 31 00:00 | TS | 52 mph | — | 15.8°N 155.4°W | open ocean |
| Aug 31 06:00 | TS | 46 mph | — | 15.8°N 157.0°W | open ocean |
| Aug 31 12:00 | TS | 40 mph | — | 15.8°N 158.7°W | open ocean |
| Aug 31 18:00 | TD | 35 mph | — | 15.0°N 160.1°W | open ocean |
| Sep 1 00:00 | TD | 29 mph | — | 14.5°N 161.5°W | open ocean |
| Sep 1 06:00 | TD | 29 mph | — | 14.5°N 163.0°W | open ocean |
| Sep 1 12:00 | TD | 29 mph | — | 14.6°N 164.5°W | open ocean |
| Sep 1 18:00 | TD | 29 mph | — | 14.0°N 166.2°W | open ocean |
| Sep 2 00:00 | TD | 29 mph | — | 13.8°N 168.2°W | open ocean |
⬇ Download track data (CSV) · public-domain NOAA best track
Questions
No — the NOAA best-track record shows no landfall for Miriam.
At its peak on August 29, 1978, Miriam was a Category 1 hurricane with maximum sustained winds of 92 mph (148 km/h).
9.3 days, from August 23, 1978 to September 2, 1978, including 24 hours at hurricane strength. It travelled about 3,771 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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