The 1991 season in numbers
The record holds 32 storms for the 1991 Western North Pacific season, of which 29 had names.28 reached tropical storm strength (34 knots or more), 19 reached typhoon strength (category 1 or more) and 11 were major (category 3 or more). 2 have no wind speed in the record.
- 32storms
- 28tropical storm strength or more
- 19typhoon strength or more
- 11major (category 3 to 5)
- 409accumulated cyclone energy
Accumulated cyclone energy adds up the squared wind speed of every position of 34 knots or more, divided by 10,000. It is approximate here because the winds are 1-minute equivalents, and it is mostly useful for comparing seasons of one basin.
Strongest storms of 1991
- Yuri (1991)16 November 1991 to 3 December 1991, peak Category 5 (150 kt), 895 hPa
- Ruth (1991)16 October 1991 to 3 November 1991, peak Category 5 (145 kt), 895 hPa
- Walt (1991)4 May 1991 to 18 May 1991, peak Category 5 (140 kt), 915 hPa
- Mireille (1991)13 September 1991 to 1 October 1991, peak Category 4 (130 kt), 925 hPa
- Seth (1991)28 October 1991 to 15 November 1991, peak Category 4 (130 kt), 925 hPa
All 32 storms of 1991
| Storm | Peak |
|---|---|
| Sharon | Tropical storm |
| Tim | Category 1 |
| Vanessa | Tropical storm |
| Walt | Category 5 |
| Yunya | Category 3 |
| Unnamed storm | Unknown intensity |
| Zeke | Category 1 |
| Amy | Category 4 |
| Brendan | Category 1 |
| Caitlin | Category 2 |
| Brendan | Unknown intensity |
| Doug | Tropical storm |
| Fred | Category 2 |
| Ellie | Category 2 |
| Unnamed storm | Tropical depression |
| Gladys | Category 1 |
| Unnamed storm | Tropical depression |
| Harry | Tropical storm |
| Ivy | Category 4 |
| Joel | Tropical storm |
| Kinna | Category 2 |
| Mireille | Category 4 |
| Luke | Tropical storm |
| Nat | Category 3 |
| Pat | Category 4 |
| Orchid | Category 4 |
| Ruth | Category 5 |
| Seth | Category 4 |
| Thelma | Tropical storm |
| Verne | Tropical storm |
| Wilda | Tropical storm |
| Yuri | Category 5 |
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