Baltimore County, Maryland Tropical Cyclone History
Since 1878, 18 tropical cyclones have passed within 50 miles of Baltimore County, Maryland — about one every 8.2 years. Of those, 1 were at hurricane strength at their closest approach. The most recent was Isaias (2020), which passed 37 miles away on 4 August 2020.
Storm tracks within 50 miles
How strong they get
Key facts
- Most recentIsaias (2020) — 37 mi away, 4 August 2020
- Strongest stormUnnamed Storm (1878) — 80 kt (92 mph) at its strongest within 50 miles
- Closest pass on recordUnnamed Storm (1963) — 6.4 miles
- Closest major hurricane (Cat 3+)None on record
- Passes within 25 miles10 of 18
- Peak monthAugust — 9 storms (50% of all)
- Most active year1893 — 2 storms
- Most active decade1930s and 1950s — 3 storms
- Major hurricanes (Cat 3+) within 50 mi0
- Record span1878–2020
When storms arrive
| J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 2 | 0 | 9 | 4 | 3 | 0 | 0 |
Activity by decade
| 1870s | 1880s | 1890s | 1900s | 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 2 | 0 | 1 | 0 | 3 | 2 | 3 | 1 | 0 | 0 | 2 | 0 | 0 | 1 |
Every tropical or subtropical cyclone within 50 miles
| Storm | Closest approach | Distance | Status | Wind |
|---|---|---|---|---|
| Isaias (2020) | 4 Aug 2020 | 37.0 mi | TS / TD | 58 kt |
| Beryl (1994) | 18 Aug 1994 | 41.1 mi | TS / TD | 15 kt |
| Danielle (1992) | 26 Sep 1992 | 39.1 mi | TS / TD | 33 kt |
| Unnamed Storm (1963) | 4 Jun 1963 | 6.4 mi | TS / TD | 28 kt |
| Diane (1955) | 18 Aug 1955 | 18.3 mi | TS / TD | 35 kt |
| Connie (1955) | 13 Aug 1955 | 9.8 mi | TS / TD | 49 kt |
| Able (1952) | 1 Sep 1952 | 20.2 mi | TS / TD | 50 kt |
| Unnamed Storm (1949) | 29 Aug 1949 | 45.3 mi | TS / TD | 50 kt |
| Unnamed Storm (1943) | 1 Oct 1943 | 10.5 mi | TS / TD | 35 kt |
| Unnamed Storm (1939) | 19 Aug 1939 | 30.6 mi | TS / TD | 30 kt |
| Unnamed Storm (1934) | 4 Sep 1934 | 21.4 mi | TS / TD | 26 kt |
| Unnamed Storm (1933) | 24 Aug 1933 | 28.6 mi | TS / TD | 52 kt |
| Unnamed Storm (1915) | 4 Aug 1915 | 7.7 mi | TS / TD | 42 kt |
| Unnamed Storm (1893) | 23 Oct 1893 | 24.5 mi | TS / TD | 38 kt |
| Unnamed Storm (1893) | 29 Aug 1893 | 12.5 mi | TS / TD | 55 kt |
| Unnamed Storm (1886) | 23 Jun 1886 | 49.5 mi | TS / TD | 30 kt |
| Unnamed Storm (1883) | 13 Sep 1883 | 37.8 mi | TS / TD | 30 kt |
| Unnamed Storm (1878) | 23 Oct 1878 | 15.2 mi | Cat 1 | 78 kt |
Post-tropical and extratropical passes
A further 10 systems passed within 50 miles after losing tropical characteristics. These are excluded from the counts above because they were no longer tropical cyclones at their closest approach — but several were highly damaging, so they are listed here. Showing the 8 most recent.
| Storm | Status | Closest approach | Distance | Wind |
|---|---|---|---|---|
| Ophelia (2023) | Post-tropical | 24 Sep 2023 | 40.5 mi | 20 kt |
| Ida (2021) | Post-tropical | 1 Sep 2021 | 6.8 mi | 33 kt |
| Sandy (2012) | Post-tropical | 30 Oct 2012 | 34.8 mi | 54 kt |
| Ernesto (2006) | Post-tropical | 2 Sep 2006 | 5.4 mi | 38 kt |
| Chris (1988) | Post-tropical | 29 Aug 1988 | 18.0 mi | 20 kt |
| Hazel (1954) | Post-tropical | 15 Oct 1954 | 41.1 mi | 72 kt |
| Unnamed Storm (1945) | Post-tropical | 18 Sep 1945 | 34.4 mi | 32 kt |
| Unnamed Storm (1934) | Post-tropical | 19 Jun 1934 | 8.9 mi | 40 kt |
How Baltimore County, Maryland compares
Among the 2,208 U.S. counties and county-equivalents that have recorded at least one tropical cyclone within 50 miles, Baltimore County, Maryland ranks #855 — more exposed than 61.3% of them. Within Maryland it ranks #13 of 24, against a state average of 20.3 storms per county.
Notable storms
- Cat 1 Unnamed Storm (1878) passed 15 miles away on 23 October 1878 as a hurricane, reaching 80 kt (92 mph) while within 50 miles.
- TS / TD Isaias (2020) passed 37 miles away on 4 August 2020 as a tropical storm, reaching 57 kt (66 mph) while within 50 miles.
- TS / TD Unnamed Storm (1893) passed 12 miles away on 29 August 1893 as a tropical storm, reaching 55 kt (63 mph) while within 50 miles.
- TS / TD Unnamed Storm (1933) passed 29 miles away on 24 August 1933 as a tropical storm, reaching 53 kt (61 mph) while within 50 miles.
18 of the 18 storms made a documented landfall somewhere along their track.
How often to expect a storm
A return interval of 8.2 years does not mean storms arrive on a schedule. It is simply 18 storms spread over the 148 years from 1878 to 2025. 2 separate years saw more than one storm pass within 50 miles while decades have gone by with none. The longest recorded quiet stretch was 29 years, between 1963 and 1992. It has been 5 years since the last one; 7 of the 15 gaps in this record were longer than that.
Common questions
How many hurricanes have hit Baltimore County, Maryland?
1 tropical cyclones have passed within 50 miles of Baltimore County, Maryland at hurricane strength since 1878. Counting all tropical cyclones — including tropical storms and depressions — the total is 18.
When was the last hurricane in Baltimore County, Maryland?
Unnamed Storm (1878), on 23 October 1878, passing 15 miles away — 148 years ago. The most recent tropical cyclone of any strength was Isaias (2020) in 2020.
What was the strongest storm to affect Baltimore County, Maryland?
Unnamed Storm (1878), which reached 80 kt (92 mph) while within 50 miles; its closest approach was 15 miles.
How often do hurricanes hit Baltimore County, Maryland?
On average, one tropical cyclone passes within 50 miles every 8.2 years — 18 storms over the 148 years from 1878 to 2025, the end of the HURDAT2 record. That is a historical average, not a schedule or a forecast.
Nearby counties
Baltimore County, Maryland borders or sits close to 6 other counties with a published storm record. Anne Arundel County, Maryland has 21 on record.