Hurricane Guillermo (1997)
Hurricane Guillermo reached Category 5 in the Eastern Pacific between July 30, 1997 and August 24, 1997, with a lowest pressure of 919 mb. It killed 1 people in the United States, by the National Weather Service’s record.
Radar
Reflectivity now over Hurricane Guillermo. Open it to see storms, cones and warnings on the map.























Radar mosaic and map layers from NOAA MRMS. Boundaries from the Iowa Environmental Mesonet.
The storm
- Basin
- Eastern Pacific
- Dates
- July 30, 1997 to August 24, 1997
- Peak strength
- Category 5, 140 kt (161 mph)
- Lowest pressure
- 919 mb (27.14 inHg)
- Landfall
- No; closest approach 417 km (259 mi)
- Accumulated cyclone energy
- 40.0
- Fastest the center moved
- 20 kt (23 mph)
- Identifier
- EP091997
Deaths and damage
The sources count different things and are not added together.
NOAA Storm Events
1 deaths (1 direct, 0 indirect)none recorded
What National Weather Service offices recorded county by county in 1 states and marine areas, in the United States only. Property and crop damage as each office estimated it, which is not a national loss total.
In the United States
NOAA’s Storm Events database, the record National Weather Service offices compile months after a storm, as compiled March 2026.
- Deaths
- 1 (1 direct, 0 indirect)
- Injuries
- 3
- Property damage
- none recorded
- Crop damage
- none recorded
- Events recorded
- 5 in 2 reports from 1 states and marine areas
State by state
| State or marine area | Deaths | Injuries | Damage | Events |
|---|---|---|---|---|
| California | 1 | 3 | 5 |
What was recorded
4 high surf, 1 rip current.
What forecast offices wrote
From the Storm Events narratives, unedited.
Surf whipped up by Hurricane Guillermo pounded beaches in Orange County with waves from 6 to 12 feet high. Hundreds of people were rescued, but rip currents were blamed for three injuries and one death. On the fifth, a 19 year old man was swept away about a mile north of the Huntington Beach Pier. His body was recovered several days later. On the sixth, a teenage boy and girl were pummelled on a beach in Corona Del Mar. Another 18 year old was pulled ashore and sent to the hospital with neck injuries. In Newport Beach, lifeguards made nearly 300 rescues on the fifth and sixth alone.
Orange, California · Rip Current · Aug 5, 14:00 UTC
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Jul 30, 12:00 | 11.0N 94.7W | 25 kt | 1010 mb | Tropical depression |
| Jul 30, 18:00 | 11.3N 95.5W | 30 kt | 1009 mb | Tropical depression |
| Jul 31, 00:00 | 11.6N 96.3W | 30 kt | 1008 mb | Tropical depression |
| Jul 31, 06:00 | 11.9N 97.2W | 35 kt | 1005 mb | Tropical storm |
| Jul 31, 12:00 | 12.1N 98.1W | 40 kt | 1002 mb | Tropical storm |
| Jul 31, 18:00 | 12.2N 99.1W | 45 kt | 1000 mb | Tropical storm |
| Aug 1, 00:00 | 12.4N 100.0W | 50 kt | 997 mb | Tropical storm |
| Aug 1, 06:00 | 12.5N 101.0W | 55 kt | 994 mb | Tropical storm |
| Aug 1, 12:00 | 12.6N 102.0W | 60 kt | 990 mb | Tropical storm |
| Aug 1, 18:00 | 12.7N 103.0W | 65 kt | 987 mb | Hurricane |
| Aug 2, 00:00 | 13.0N 104.0W | 70 kt | 983 mb | Hurricane |
| Aug 2, 06:00 | 13.1N 105.0W | 75 kt | 979 mb | Hurricane |
| Aug 2, 12:00 | 13.2N 106.1W | 90 kt | 969 mb | Hurricane |
| Aug 2, 18:00 | 13.3N 107.1W | 105 kt | 959 mb | Hurricane |
| Aug 3, 00:00 | 13.4N 108.1W | 115 kt | 947 mb | Hurricane |
| Aug 3, 06:00 | 13.5N 109.1W | 125 kt | 935 mb | Hurricane |
| Aug 3, 12:00 | 13.6N 110.2W | 135 kt | 925 mb | Hurricane |
| Aug 3, 18:00 | 13.7N 111.4W | 130 kt | 927 mb | Hurricane |
| Aug 4, 00:00 | 13.9N 112.6W | 130 kt | 929 mb | Hurricane |
| Aug 4, 06:00 | 14.0N 113.9W | 130 kt | 928 mb | Hurricane |
| Aug 4, 12:00 | 14.1N 115.2W | 135 kt | 925 mb | Hurricane |
| Aug 4, 18:00 | 14.2N 116.6W | 140 kt | 921 mb | Hurricane |
| Aug 5, 00:00 | 14.3N 118.0W | 140 kt | 919 mb | Hurricane |
| Aug 5, 06:00 | 14.3N 119.5W | 140 kt | 920 mb | Hurricane |
| Aug 5, 12:00 | 14.4N 120.9W | 140 kt | 921 mb | Hurricane |
| Aug 5, 18:00 | 14.6N 122.4W | 135 kt | 925 mb | Hurricane |
| Aug 6, 00:00 | 14.8N 123.8W | 130 kt | 930 mb | Hurricane |
| Aug 6, 06:00 | 15.2N 125.2W | 125 kt | 938 mb | Hurricane |
| Aug 6, 12:00 | 15.5N 126.7W | 115 kt | 948 mb | Hurricane |
| Aug 6, 18:00 | 15.9N 128.2W | 110 kt | 954 mb | Hurricane |
| Aug 7, 00:00 | 16.2N 129.6W | 100 kt | 960 mb | Hurricane |
| Aug 7, 06:00 | 16.5N 130.9W | 90 kt | 970 mb | Hurricane |
| Aug 7, 12:00 | 16.9N 132.0W | 80 kt | 979 mb | Hurricane |
| Aug 7, 18:00 | 17.4N 133.0W | 70 kt | 983 mb | Hurricane |
| Aug 8, 00:00 | 17.8N 134.1W | 65 kt | 987 mb | Hurricane |
| Aug 8, 06:00 | 18.3N 135.1W | 60 kt | 990 mb | Tropical storm |
| Aug 8, 12:00 | 18.9N 136.1W | 55 kt | 993 mb | Tropical storm |
| Aug 8, 18:00 | 19.5N 137.0W | 55 kt | 995 mb | Tropical storm |
| Aug 9, 00:00 | 20.0N 137.9W | 50 kt | 997 mb | Tropical storm |
| Aug 9, 06:00 | 20.7N 138.6W | 45 kt | 998 mb | Tropical storm |
| Aug 9, 12:00 | 21.3N 139.3W | 45 kt | 1000 mb | Tropical storm |
| Aug 9, 18:00 | 21.9N 139.9W | 45 kt | 1002 mb | Tropical storm |
| Aug 10, 00:00 | 22.6N 140.4W | 40 kt | 1005 mb | Tropical storm |
| Aug 10, 06:00 | 23.3N 141.2W | 35 kt | 1006 mb | Tropical storm |
| Aug 10, 12:00 | 24.2N 141.8W | 35 kt | 1006 mb | Tropical storm |
| Aug 10, 18:00 | 25.0N 142.2W | 30 kt | 1007 mb | Tropical depression |
| Aug 11, 00:00 | 25.9N 142.6W | 30 kt | 1007 mb | Tropical depression |
| Aug 11, 06:00 | 26.8N 143.1W | 30 kt | 1007 mb | Tropical depression |
| Aug 11, 12:00 | 27.6N 143.6W | 30 kt | 1004 mb | Tropical depression |
| Aug 11, 18:00 | 28.4N 144.4W | 35 kt | 1008 mb | Tropical storm |
| Aug 12, 00:00 | 29.0N 145.4W | 35 kt | 1007 mb | Tropical storm |
| Aug 12, 06:00 | 29.5N 146.2W | 40 kt | 1000 mb | Tropical storm |
| Aug 12, 12:00 | 29.8N 147.2W | 40 kt | 1000 mb | Tropical storm |
| Aug 12, 18:00 | 30.2N 148.3W | 40 kt | 1004 mb | Tropical storm |
| Aug 13, 00:00 | 30.7N 149.4W | 40 kt | 1004 mb | Tropical storm |
| Aug 13, 06:00 | 31.0N 150.4W | 40 kt | 1004 mb | Tropical storm |
| Aug 13, 12:00 | 31.5N 151.6W | 40 kt | 1004 mb | Tropical storm |
| Aug 13, 18:00 | 32.2N 152.9W | 45 kt | 1004 mb | Tropical storm |
| Aug 14, 00:00 | 33.0N 153.9W | 55 kt | 1000 mb | Tropical storm |
| Aug 14, 06:00 | 33.8N 155.2W | 50 kt | 1000 mb | Tropical storm |
| Aug 14, 12:00 | 34.6N 156.3W | 45 kt | 1000 mb | Tropical storm |
| Aug 14, 18:00 | 35.6N 157.4W | 40 kt | 1006 mb | Tropical storm |
| Aug 15, 00:00 | 36.8N 158.4W | 35 kt | 1008 mb | Tropical storm |
| Aug 15, 06:00 | 38.0N 159.1W | 35 kt | 1009 mb | Tropical storm |
| Aug 15, 12:00 | 39.3N 159.7W | 30 kt | 1010 mb | Tropical depression |
| Aug 15, 18:00 | 40.5N 160.2W | 30 kt | 1012 mb | Tropical depression |
| Aug 16, 00:00 | 41.8N 161.0W | 30 kt | 1010 mb | Extratropical |
| Aug 16, 06:00 | 43.1N 161.9W | 30 kt | 1009 mb | Extratropical |
| Aug 16, 12:00 | 44.3N 162.5W | 30 kt | 1014 mb | Extratropical |
| Aug 16, 18:00 | 45.5N 162.8W | 30 kt | 1018 mb | Extratropical |
| Aug 17, 00:00 | 46.7N 162.4W | 25 kt | 1016 mb | Extratropical |
| Aug 17, 06:00 | 47.6N 161.2W | 30 kt | 1016 mb | Extratropical |
| Aug 17, 12:00 | 48.3N 159.5W | 25 kt | 1018 mb | Extratropical |
| Aug 17, 18:00 | 48.9N 157.4W | 25 kt | 1016 mb | Extratropical |
| Aug 18, 00:00 | 49.5N 154.9W | 25 kt | 1015 mb | Extratropical |
| Aug 18, 06:00 | 49.9N 152.0W | 25 kt | 1010 mb | Extratropical |
| Aug 18, 12:00 | 50.4N 149.0W | 30 kt | 1010 mb | Extratropical |
| Aug 18, 18:00 | 50.7N 146.1W | 25 kt | 1005 mb | Extratropical |
| Aug 19, 00:00 | 51.1N 143.7W | 30 kt | 1003 mb | Extratropical |
| Aug 19, 06:00 | 51.2N 141.8W | 30 kt | 1002 mb | Extratropical |
| Aug 19, 12:00 | 50.3N 140.7W | 30 kt | 1004 mb | Extratropical |
| Aug 19, 18:00 | 49.3N 140.2W | 30 kt | 1004 mb | Extratropical |
| Aug 20, 00:00 | 48.0N 140.0W | 30 kt | 1004 mb | Extratropical |
| Aug 20, 06:00 | 46.5N 139.8W | 30 kt | 1006 mb | Extratropical |
| Aug 20, 12:00 | 45.0N 139.5W | 30 kt | 1004 mb | Extratropical |
| Aug 20, 18:00 | 43.7N 139.0W | 30 kt | 1005 mb | Extratropical |
| Aug 21, 00:00 | 42.7N 138.4W | 25 kt | 1005 mb | Extratropical |
| Aug 21, 06:00 | 42.0N 137.9W | 25 kt | 1006 mb | Extratropical |
| Aug 21, 12:00 | 41.4N 137.4W | 25 kt | 1005 mb | Extratropical |
| Aug 21, 18:00 | 40.8N 136.8W | 25 kt | 1006 mb | Extratropical |
| Aug 22, 00:00 | 40.2N 136.5W | 25 kt | 1006 mb | Extratropical |
| Aug 22, 06:00 | 39.8N 136.2W | 30 kt | 1009 mb | Extratropical |
| Aug 22, 12:00 | 39.4N 135.8W | 25 kt | 1010 mb | Extratropical |
| Aug 22, 18:00 | 39.0N 135.1W | 25 kt | 1012 mb | Extratropical |
| Aug 23, 00:00 | 38.8N 134.1W | 25 kt | 1012 mb | Extratropical |
| Aug 23, 06:00 | 38.7N 133.0W | 25 kt | 1014 mb | Extratropical |
| Aug 23, 12:00 | 38.8N 132.0W | 20 kt | 1014 mb | Extratropical |
| Aug 23, 18:00 | 38.8N 131.0W | 20 kt | 1014 mb | Extratropical |
| Aug 24, 00:00 | 39.0N 130.0W | 20 kt | 1014 mb | Extratropical |
Other Eastern Pacific storms of 1997
- Tropical Storm AndresEastern Pacific · 1997
- Tropical Storm BlancaEastern Pacific · 1997
- Unnamed tropical depressionEastern Pacific · 1997
- Tropical Storm CarlosEastern Pacific · 1997
- Unnamed tropical depressionEastern Pacific · 1997
- Hurricane DoloresEastern Pacific · 1997
- Hurricane EnriqueEastern Pacific · 1997
- Hurricane FeliciaEastern Pacific · 1997
- Unnamed tropical depressionEastern Pacific · 1997
- Tropical Storm HildaEastern Pacific · 1997
- Unnamed tropical depressionEastern Pacific · 1997
- Tropical Storm IgnacioEastern Pacific · 1997
- Hurricane JimenaEastern Pacific · 1997
- Hurricane OliwaEastern Pacific · 1997
- Tropical Storm KevinEastern Pacific · 1997
- Hurricane LindaEastern Pacific · 1997
- Tropical Storm MartyEastern Pacific · 1997
- Hurricane NoraEastern Pacific · 1997
- Tropical Storm EllaEastern Pacific · 1997
- Tropical Storm OlafEastern Pacific · 1997
- Hurricane PaulineEastern Pacific · 1997
- Unnamed tropical depressionEastern Pacific · 1997
- Unnamed tropical stormEastern Pacific · 1997
- Hurricane RickEastern Pacific · 1997
- Hurricane PakaEastern Pacific · 1997
What this means
A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.
Sources
Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.