Calvin was a Cat 3 Atlantic tropical cyclone that existed from July 10 to July 19, 2023 (10 days). It reached peak winds of 126 mph (110 kt) and a minimum central pressure of 953 mb.
The National Hurricane Center's official post-storm analysis is published as a detailed PDF report — meteorological history, casualties, damage assessment, forecast performance, and synoptic discussion.
Read NHC's full report on Calvin → (opens at nhc.noaa.gov)| Time (UTC) | Status | Lat | Lon | Winds (kt) | Pressure (mb) | Record |
|---|---|---|---|---|---|---|
| 2023-07-10 06:00 | LO | 10.40 | -98.00 | 20 | 1009 | |
| 2023-07-10 12:00 | LO | 10.50 | -99.40 | 25 | 1008 | |
| 2023-07-10 18:00 | LO | 10.70 | -101.00 | 30 | 1008 | |
| 2023-07-11 00:00 | LO | 11.20 | -102.50 | 30 | 1008 | |
| 2023-07-11 06:00 | TS | 11.70 | -104.20 | 35 | 1006 | |
| 2023-07-11 12:00 | TS | 12.10 | -105.80 | 35 | 1006 | |
| 2023-07-11 18:00 | TS | 12.30 | -107.20 | 35 | 1006 | |
| 2023-07-12 00:00 | TS | 12.40 | -108.50 | 35 | 1005 | |
| 2023-07-12 06:00 | TS | 12.40 | -109.80 | 40 | 1004 | |
| 2023-07-12 12:00 | TS | 12.40 | -111.30 | 45 | 1002 | |
| 2023-07-12 18:00 | TS | 12.40 | -112.80 | 55 | 998 | |
| 2023-07-13 00:00 | TS | 12.40 | -114.30 | 60 | 995 | |
| 2023-07-13 06:00 | TS | 12.30 | -115.40 | 60 | 995 | |
| 2023-07-13 12:00 | HU | 12.50 | -116.60 | 65 | 993 | |
| 2023-07-13 18:00 | HU | 12.70 | -118.00 | 70 | 990 | |
| 2023-07-14 00:00 | HU | 13.00 | -119.70 | 85 | 976 | |
| 2023-07-14 06:00 | HU | 13.10 | -121.30 | 95 | 966 | |
| 2023-07-14 12:00 | HU | 13.40 | -122.60 | 105 | 959 | |
| 2023-07-14 18:00 | HU | 13.70 | -123.90 | 110 | 953 | |
| 2023-07-15 00:00 | HU | 14.00 | -125.30 | 100 | 962 | |
| 2023-07-15 06:00 | HU | 14.40 | -126.70 | 90 | 969 | |
| 2023-07-15 12:00 | HU | 14.60 | -128.20 | 90 | 971 | |
| 2023-07-15 18:00 | HU | 14.90 | -129.70 | 90 | 973 | |
| 2023-07-16 00:00 | HU | 15.20 | -131.20 | 80 | 977 | |
| 2023-07-16 06:00 | HU | 15.50 | -132.60 | 75 | 982 | |
| 2023-07-16 12:00 | HU | 15.70 | -134.00 | 65 | 990 | |
| 2023-07-16 18:00 | TS | 16.00 | -135.60 | 60 | 993 | |
| 2023-07-17 00:00 | TS | 16.40 | -137.20 | 55 | 995 | |
| 2023-07-17 06:00 | TS | 16.60 | -138.80 | 50 | 998 | |
| 2023-07-17 12:00 | TS | 16.70 | -140.50 | 45 | 1000 | |
| 2023-07-17 18:00 | TS | 17.00 | -142.40 | 45 | 1000 | |
| 2023-07-18 00:00 | TS | 17.20 | -144.40 | 40 | 1004 | |
| 2023-07-18 06:00 | TS | 17.30 | -146.50 | 40 | 1002 | |
| 2023-07-18 12:00 | TS | 17.40 | -148.50 | 40 | 1002 | |
| 2023-07-18 18:00 | TS | 17.60 | -150.40 | 45 | 1002 | |
| 2023-07-19 00:00 | TS | 17.80 | -152.30 | 50 | 1003 | |
| 2023-07-19 06:00 | TS | 17.70 | -154.30 | 45 | 1003 | |
| 2023-07-19 12:00 | TS | 17.70 | -155.90 | 40 | 1006 | |
| 2023-07-19 18:00 | LO | 17.90 | -157.70 | 35 | 1009 |
Source: NOAA National Hurricane Center HURDAT2 best-track database (nhc.noaa.gov/data). Data is in the public domain. Best-track positions and intensities are post-storm reanalysis estimates and may differ from real-time advisories.