NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Severn, MD
Every tropical system within 75 miles since 1851 and every tornado within 25 miles since 1950.
Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated
35 tropical systems have passed within 75 miles of Severn, Maryland since 1851, 3 of them at hurricane strength; the most recent was Ida in 2021. Since 1950, 95 tornadoes have touched down within 25 miles, 2 of them rated EF3 or stronger.
- Hurricanes
- 3
- Tropical storms
- 32
- Tornadoes
- 95
- EF3 or stronger
- 2
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
4 deaths in all
What the records show for Severn
The strongest storm to pass near Severn was an unnamed storm in 1878, a Category 1 hurricane with 91 mph winds when its centre passed 19 miles away. The record near Severn begins with an unnamed storm in 1863; the most recent system was Ida in 2021, a tropical storm 75 miles away. The busiest decade was the 1870s, with 5 systems, one of them at hurricane strength. Of the 35 systems, 6 have come since 2000. Severn has more hurricanes within 75 miles than 14% of the 239 Maryland cities on this site. The highest rating among the 95 tornadoes within 25 miles is F3, reached 2 times; the most recent, on September 24, 2001, came within 9 miles. The deadliest, an EF1 on November 2, 2018, killed 2 people. Of the 95, 6 had paths within 5 miles of the city centre, and 51 have come since 2000. June has had the most tornadoes, 23. The most recent tornado was on July 31, 2025. Severn has more tornadoes within 25 miles than 54% of the 239 Maryland cities. Hail has been reported within 10 miles 91 times since 1971, with stones up to 2 inches (hen egg size). Severn has more hail reports within 10 miles than 77% of the 239 Maryland cities.
Compare Severn's storm record with another city →
Tropical storms and hurricanes near Severn
| Year | Storm | Closest | Strength when closest | Peak |
|---|---|---|---|---|
| 2021 | IdaSep 2 | 75 mi | Tropical storm (40 mph) | Category 4 |
| 2020 | ZetaOct 29 | 61 mi | Tropical storm (52 mph) | Category 3 |
| 2020 | IsaiasAug 4 | 32 mi | Tropical storm (67 mph) | Category 1 |
| 2012 | SandyOct 30 | 57 mi | Tropical storm (62 mph) | Category 3 |
| 2008 | HannaSep 6 | 56 mi | Tropical storm (52 mph) | Category 1 |
| 2006 | ErnestoSep 2 | overhead | Tropical storm (45 mph) | Category 1 |
| 1996 | BerthaJul 13 | 58 mi | Tropical storm (69 mph) | Category 3 |
| 1992 | DanielleSep 26 | 47 mi | Tropical storm (41 mph) | Tropical storm |
| 1963 | Unnamed 1963 stormJun 3 | 69 mi | Tropical storm (46 mph) | Tropical storm |
| 1955 | DianeAug 18 | 32 mi | Tropical storm (41 mph) | Category 2 |
| 1955 | ConnieAug 13 | 4 mi | Tropical storm (58 mph) | Category 4 |
| 1954 | HazelOct 15 | 41 mi | Category 1 (83 mph) | Category 4 |
| 1952 | AbleSep 1 | 33 mi | Tropical storm (58 mph) | Category 2 |
| 1949 | Unnamed 1949 stormAug 29 | 52 mi | Tropical storm (58 mph) | Category 4 |
| 1945 | Unnamed 1945 stormSep 18 | 60 mi | Tropical storm (40 mph) | Category 4 |
| 1944 | Unnamed 1944 stormAug 3 | 51 mi | Tropical storm (40 mph) | Category 1 |
| 1943 | Unnamed 1943 stormOct 1 | 2 mi | Tropical storm (45 mph) | Tropical storm |
| 1934 | Unnamed 1934 stormJun 19 | 15 mi | Tropical storm (46 mph) | Category 2 |
| 1933 | Unnamed 1933 stormAug 24 | 25 mi | Tropical storm (61 mph) | Category 4 |
| 1929 | Unnamed 1929 stormOct 2 | 3 mi | Tropical storm (58 mph) | Category 4 |
| 1928 | Unnamed 1928 stormSep 20 | 60 mi | Tropical storm (51 mph) | Category 5 |
| 1915 | Unnamed 1915 stormAug 4 | 16 mi | Tropical storm (48 mph) | Category 1 |
| 1904 | Unnamed 1904 stormSep 15 | 73 mi | Tropical storm (72 mph) | Category 1 |
| 1899 | Unnamed 1899 stormNov 1 | 13 mi | Tropical storm (58 mph) | Category 2 |
| 1893 | Unnamed 1893 stormOct 23 | 6 mi | Tropical storm (44 mph) | Tropical storm |
| 1893 | Unnamed 1893 stormOct 14 | 72 mi | Category 1 (74 mph) | Category 3 |
| 1893 | Unnamed 1893 stormAug 29 | 24 mi | Tropical storm (63 mph) | Category 3 |
| 1888 | Unnamed 1888 stormSep 11 | 61 mi | Tropical storm (40 mph) | Tropical storm |
| 1885 | Unnamed 1885 stormOct 13 | 66 mi | Tropical storm (46 mph) | Tropical storm |
| 1878 | Unnamed 1878 stormOct 23 | 19 mi | Category 1 (91 mph) | Category 2 |
| 1877 | Unnamed 1877 stormOct 4 | 67 mi | Tropical storm (66 mph) | Category 3 |
| 1876 | Unnamed 1876 stormSep 18 | 47 mi | Tropical storm (66 mph) | Category 3 |
| 1874 | Unnamed 1874 stormSep 29 | 64 mi | Tropical storm (58 mph) | Category 1 |
| 1872 | Unnamed 1872 stormOct 26 | 60 mi | Tropical storm (46 mph) | Category 1 |
| 1863 | Unnamed 1863 stormSep 19 | 71 mi | Tropical storm (56 mph) | Tropical storm |
Strength is the sustained wind on the track at the closest point, which is not the wind felt in Severn: a hurricane's worst winds sit within a few dozen miles of its centre, and inland cities are usually past that.
Tornadoes within 25 miles of Severn
By decade
- 2020s17
- 2010s20
- 2000s14(1 EF3+)
- 1990s29
- 1970s11
- 1960s3(1 EF3+)
- 1950s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Sep 24, 2001 | F3 | 9 mi | 17.5 mi | 2 / 55 |
| Jun 9, 1961 | F3 | 6 mi | 0.1 mi | 0 / 0 |
| Sep 1, 2021 | EF2 | 13 mi | 11.43 mi | 0 / 0 |
| Jul 23, 2017 | EF2 | 22 mi | 2.37 mi | 0 / 1 |
| Jul 27, 1994 | F2 | 9 mi | 7 mi | 0 / 0 |
| Oct 18, 1990 | F2 | 24 mi | 0.1 mi | 0 / 59 |
| Jul 31, 1978 | F2 | 23 mi | 0.8 mi | 0 / 0 |
| Jun 16, 1973 | F2 | 15 mi | 0.1 mi | 0 / 4 |
| Sep 12, 1971 | F2 | 17 mi | 3 mi | 0 / 0 |
| Nov 2, 2018 | EF1 | 12 mi | 2.72 mi | 2 / 1 |
| May 16, 2025 | EF1 | 11 mi | 4.34 mi | 0 / 0 |
| Jun 5, 2024 | EF1 | 21 mi | 0.94 mi | 0 / 0 |
The strongest 12 of 95, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Severn
The Storm Prediction Center has 91 hail reports within 10 miles of Severn since 1971, made on 51 separate days. Of these, 63 were 1 inch across or larger, and 2 reached 2 inches. The largest size, 2 inches (hen egg size), was reported on 2 days, most recently June 2, 1998. The most recent report is from June 18, 2025. June has the most reports, 24.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Severn
The nearest NOAA station with 1991–2020 climate normals is Baltimore Wash International Airport, MD, 3 miles north of Severn at 156 feet. July is the warmest, with an average high of 89°F and low of 68°F; January is the coolest, at 43°F and 25°F. July is the wettest at 4.5 inches of precipitation on average and February the driest at 2.9 inches; the year adds up to 45.0 inches over 75 days with at least a tenth of an inch. June to November, the hurricane season months, bring 53% of the year's precipitation (24.0 of 45.0 inches); the other six months are drier. September has brought the most of the 35 tropical systems that passed within 75 miles (12); a normal September there has highs of 80°F and 4.4 inches of precipitation. Highs reach 90°F on about 34 days a year, almost all from May to September. Lows fall below freezing on about 93 nights a year. Snowfall averages 19.3 inches a year, most of it in February. That 45.0 inches is more than at 15 of the 41 Maryland stations used on this site (37%). Savage, 7 miles west, has its own station (Laurel 3 W, MD): 47.5 inches a year, 2.5 more than here, and the same July average high, 89°F.
Water temperature at the NOAA tide station Baltimore, MD, 11 miles northeast, averaged 83°F in July and 40°F in February over 2021–2025. It averaged 80°F or warmer from July to August. Sea level at the Baltimore tide gauge, 11 miles from Severn, has risen 1.30 ± 0.02 inches per decade from 1902 to 2025, NOAA's linear trend; at that pace it is 13.0 inches in a hundred years. That is faster than at 77 of the 144 U.S. gauges with a NOAA trend.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in | Water °F |
|---|---|---|---|---|---|---|
| Jan | 43 | 25 | 3.1 | 6 | 6.4 | 41 |
| Feb | 46 | 27 | 2.9 | 6 | 7.5 | 40 |
| Mar | 55 | 34 | 4.0 | 7 | 2.8 | 46 |
| Apr | 67 | 44 | 3.4 | 6 | 0.0 | 56 |
| May | 76 | 53 | 3.9 | 7 | 0.0 | 66 |
| Jun | 84 | 63 | 4.0 | 7 | 0.0 | 75 |
| Jul | 89 | 68 | 4.5 | 7 | 0.0 | 83 |
| Aug | 87 | 66 | 4.1 | 6 | 0.0 | 81 |
| Sep | 80 | 59 | 4.4 | 6 | 0.0 | 77 |
| Oct | 68 | 47 | 3.9 | 5 | 0.0 | 68 |
| Nov | 57 | 37 | 3.1 | 5 | 0.1 | 57 |
| Dec | 48 | 30 | 3.7 | 6 | 2.5 | 45 |
| Year | 67 | 46 | 45.0 | 75 | 19.3 | 61 |
Averages for 1991–2020 at Baltimore Wash International Airport, MD (156 ft), from NOAA NCEI U.S. Climate Normals; water temperature: average of hourly readings 2021–2025 at the NOAA tide station Baltimore, MD, from NOAA Tides & Currents. Normals describe the station; the farther a place is from it, and the bigger the difference in height, the more its weather can differ.
Floods, thunderstorm wind and lightning near Severn
Since 1996, the National Weather Service has logged 632 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Severn: 391 thunderstorm wind reports, 119 floods, 117 flash floods and 5 lightning strikes. They killed 4 people and injured 10, and the NWS estimated $7.9 million in property and crop damage. The strongest thunderstorm gust on record here was 90 mph, on June 29, 2012. August has had the most flash floods, 38 of 117. Of the 239 Maryland cities on this site with a flash flood on record, 186 have had fewer than Severn.
June 30, 2024: thunderstorm wind 1 mile from the centre of Severn — 1 killed, $300,000 damage.
NWS: “Numerous large trees and power lines blew down in Ridgeway. In the 1400 block of Maryland Avenue, a large tree blew down onto power lines; the live power lines fell onto a chain link fence, and when a 31-year-old man was walking their dog who touched the fence, the dog and person were both electrocuted.”
May 19, 2015: flood 6 miles from the centre of Severn — 1 killed, $10,000 damage.
September 7, 2011: flood 9 miles from the centre of Severn — 1 killed.
Source: NOAA NCEI Storm Events Database, events whose starting point is on record, 1996 to June 30, 2026. Damage is the NWS estimate in the dollars of the year, not insured losses, and NWS notes that some reports are unverified.
Flood insurance claims, disaster declarations and FEMA risk ratings
Flood insurance policyholders in Severn's ZIP code 21144 have filed 17 claims with the National Flood Insurance Program since 2003, and were paid $17,000 for buildings and contents, in the dollars of each year. Of the 150 Maryland cities on this site with 10 or more claims, 23 have fewer than Severn.
Anne Arundel County, which includes Severn, has been named in 23 federal disaster or emergency declarations since 1971, 16 of them major disasters (by incident: 7 snowstorms, 6 hurricanes, 4 floods, 3 severe storms). The latest major disaster declaration was Covid-19 Pandemic, on March 26, 2020. FEMA's National Risk Index gives Anne Arundel County a Relatively Moderate rating for natural hazard risk overall; by hazard: Relatively High for strong wind and lightning; Relatively Moderate for hurricanes, tornadoes, hail, inland flooding, coastal flooding and heat waves. It models the county's expected loss from all 18 hazards it covers at $74.7 million a year, the 5th highest of 24 Maryland counties; of the hazards above, the largest share, $33.3 million (45%), is from inland flooding.
Claims: FEMA, OpenFEMA Dataset FIMA NFIP Redacted Claims – v3, summed over ZIP codes; payments in the dollars of each year, not adjusted for inflation. Declarations: Disaster Declarations Summaries – v2, by county. Retrieved October 25, 2026. This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Risk ratings: FEMA, National Risk Index county table, December 2025 (v1.20), retrieved October 26, 2026; ratings compare counties nationwide, are meant for planning and are no substitute for a local risk assessment. This product uses the Federal Emergency Management Agency's National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
What counts as a pass, the distances and the sources: how this storm history is built.