Potential:
Invest
Tropical:
Depression
Storm
Hurricane:
Cat 1
Cat 2
Cat 3
Cat 4
Cat 5
Invest Forecast Map
Track History
| Advisory | Date | Name | Position | Moving | Speed | Pressure | Winds | |
| (UTC) | Lat | Lon | mph (kts) | in (mb) | mph (kts) | |||
| #19 | 2100 SUN AUG 16 | Hurricane Guillermo | 20.4N | 139.8W | WNW | 14 (12) | 980 (28.94) | 85 (74) |
| #18 | 1500 SUN AUG 16 | Hurricane Guillermo | 20.1N | 138.7W | WNW | 15 (13) | 973 (28.73) | 100 (87) |
| #17 | 0900 SUN AUG 16 | Hurricane Guillermo | 19.8N | 137.4W | W | 15 (13) | 973 (28.73) | 100 (87) |
| #16 | 0300 SUN AUG 16 | Hurricane Guillermo | 19.7N | 135.9W | WNW | 15 (13) | 958 (28.29) | 110 (96) |
| #15 | 2100 SAT AUG 15 | Hurricane Guillermo | 19.2N | 134.5W | WNW | 14 (12) | 958 (28.29) | 110 (96) |
| #14 | 1500 SAT AUG 15 | Hurricane Guillermo | 18.9N | 133.2W | WNW | 15 (13) | 954 (28.17) | 125 (108) |
| #13 | 0900 SAT AUG 15 | Hurricane Guillermo | 18.7N | 131.9W | WNW | 16 (14) | 960 (28.35) | 115 (100) |
| #12 | 0530 SAT AUG 15 | Hurricane Guillermo | 18.4N | 130.8W | WNW | 16 (14) | 960 (28.35) | 115 (100) |
| #11 | 0300 SAT AUG 15 | Hurricane Guillermo | 18.3N | 130.3W | WNW | 16 (14) | 976 (28.82) | 100 (87) |
| #10 | 2100 FRI AUG 14 | Hurricane Guillermo | 17.9N | 128.9W | W | 15 (13) | 972 (28.7) | 100 (87) |
| #9 | 1500 FRI AUG 14 | Hurricane Guillermo | 17.8N | 127.3W | W | 15 (13) | 984 (29.06) | 80 (69) |
| #8 | 0900 FRI AUG 14 | Hurricane Guillermo | 17.6N | 125.9W | W | 15 (13) | 987 (29.15) | 75 (65) |
| #7 | 0300 FRI AUG 14 | Tropical Storm Guillermo | 17.2N | 124.5W | W | 15 (13) | 992 (29.29) | 70 (61) |
| #6 | 2100 THU AUG 13 | Tropical Storm Guillermo | 17.2N | 123.1W | W | 15 (13) | 992 (29.29) | 70 (61) |
| #5 | 1500 THU AUG 13 | Tropical Storm Guillermo | 17.1N | 121.6W | WNW | 14 (12) | 994 (29.35) | 65 (56) |
| #4 | 0900 THU AUG 13 | Tropical Storm Guillermo | 16.9N | 120.5W | WNW | 16 (14) | 999 (29.5) | 50 (43) |
| #3 | 0300 THU AUG 13 | Tropical Storm Guillermo | 16.2N | 119.2W | WNW | 16 (14) | 1004 (29.65) | 40 (35) |
| #2 | 2100 WED AUG 12 | Tropical Depression Ten-E | 15.8N | 117.8W | WNW | 17 (15) | 1005 (29.68) | 35 (30) |
| #1 | 1600 WED AUG 12 | Tropical Depression Ten-E | 15.3N | 116.4W | WNW | 16 (14) | 1006 (29.71) | 34 (30) |
