NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Glen Rock, PA
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
25 tropical systems have passed within 75 miles of Glen Rock, Pennsylvania since 1851, 3 of them at hurricane strength; the most recent was Ida in 2021. Since 1950, 77 tornadoes have touched down within 25 miles, 4 of them rated EF3 or stronger.
- Hurricanes
- 3
- Tropical storms
- 22
- Tornadoes
- 77
- EF3 or stronger
- 4
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
no recorded deaths
What the records show for Glen Rock
The strongest storm to pass near Glen Rock was an unnamed storm in 1878, a Category 1 hurricane with 89 mph winds when its centre passed 5 miles away. The record near Glen Rock begins with an unnamed storm in 1876; the most recent system was Ida in 2021, a tropical storm 61 miles away. The 1890s and the 1950s were the busiest decades, with 4 systems each. Of the 25 systems, 4 have come since 2000. Glen Rock has more hurricanes within 75 miles than 89% of the 794 Pennsylvania cities on this site. The highest rating among the 77 tornadoes within 25 miles is F3, reached 4 times; the most recent, on July 19, 1996, came within 23 miles. Of the 77, one had a path within 5 miles of the city centre, and 32 have come since 2000. June has had the most tornadoes, 22. The most recent tornado was on June 5, 2024. Glen Rock has more tornadoes within 25 miles than 79% of the 794 Pennsylvania cities. Hail has been reported within 10 miles 53 times since 1962, with stones up to 2.5 inches (tennis ball size). Of the 794 Pennsylvania cities, 50% have more hail reports within 10 miles than Glen Rock.
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Tropical storms and hurricanes near Glen Rock
| Year | Storm | Closest | Strength when closest | Peak |
|---|---|---|---|---|
| 2021 | IdaSep 2 | 61 mi | Tropical storm (40 mph) | Category 4 |
| 2020 | IsaiasAug 4 | 52 mi | Tropical storm (66 mph) | Category 1 |
| 2012 | SandyOct 30 | 13 mi | Tropical storm (61 mph) | Category 3 |
| 2006 | ErnestoSep 2 | 3 mi | Tropical storm (41 mph) | Category 1 |
| 1992 | DanielleSep 26 | 47 mi | Tropical storm (40 mph) | Tropical storm |
| 1979 | DavidSep 6 | 51 mi | Tropical storm (46 mph) | Category 5 |
| 1955 | DianeAug 18 | 6 mi | Tropical storm (40 mph) | Category 2 |
| 1955 | ConnieAug 13 | 12 mi | Tropical storm (55 mph) | Category 4 |
| 1954 | HazelOct 15 | 29 mi | Category 1 (82 mph) | Category 4 |
| 1952 | AbleSep 1 | 3 mi | Tropical storm (58 mph) | Category 2 |
| 1949 | Unnamed 1949 stormAug 29 | 28 mi | Tropical storm (58 mph) | Category 4 |
| 1943 | Unnamed 1943 stormOct 1 | 6 mi | Tropical storm (39 mph) | Tropical storm |
| 1934 | Unnamed 1934 stormJun 19 | 27 mi | Tropical storm (46 mph) | Category 2 |
| 1933 | Unnamed 1933 stormAug 24 | 18 mi | Tropical storm (56 mph) | Category 4 |
| 1929 | Unnamed 1929 stormOct 2 | 20 mi | Tropical storm (58 mph) | Category 4 |
| 1928 | Unnamed 1928 stormSep 20 | 66 mi | Tropical storm (47 mph) | Category 5 |
| 1915 | Unnamed 1915 stormAug 4 | 19 mi | Tropical storm (49 mph) | Category 1 |
| 1899 | Unnamed 1899 stormNov 1 | 35 mi | Tropical storm (58 mph) | Category 2 |
| 1893 | Unnamed 1893 stormOct 23 | 36 mi | Tropical storm (43 mph) | Tropical storm |
| 1893 | Unnamed 1893 stormOct 14 | 64 mi | Category 1 (74 mph) | Category 3 |
| 1893 | Unnamed 1893 stormAug 29 | 9 mi | Tropical storm (63 mph) | Category 3 |
| 1888 | Unnamed 1888 stormAug 21 | 49 mi | Tropical storm (47 mph) | Category 3 |
| 1885 | Unnamed 1885 stormOct 13 | 51 mi | Tropical storm (46 mph) | Tropical storm |
| 1878 | Unnamed 1878 stormOct 23 | 5 mi | Category 1 (89 mph) | Category 2 |
| 1876 | Unnamed 1876 stormSep 18 | 54 mi | Tropical storm (63 mph) | Category 3 |
Strength is the sustained wind on the track at the closest point, which is not the wind felt in Glen Rock: 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 Glen Rock
By decade
- 2020s11
- 2010s14
- 2000s7
- 1990s25(1 EF3+)
- 1980s4(2 EF3+)
- 1970s7
- 1960s5
- 1950s4(1 EF3+)
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jul 19, 1996 | F3 | 23 mi | 2.2 mi | 0 / 3 |
| May 22, 1983 | F3 | 24 mi | 2 mi | 0 / 0 |
| Jun 7, 1980 | F3 | 18 mi | 1.5 mi | 0 / 0 |
| Apr 5, 1952 | F3 | 9 mi | 17.5 mi | 0 / 4 |
| Jun 5, 2024 | EF2 | 23 mi | 4.42 mi | 0 / 0 |
| Jun 5, 2024 | EF2 | 23 mi | 4.42 mi | 0 / 0 |
| Apr 28, 2011 | EF2 | 24 mi | 2.62 mi | 0 / 0 |
| Sep 18, 2004 | F2 | 20 mi | 2 mi | 0 / 0 |
| Sep 24, 2001 | F2 | 10 mi | 5 mi | 0 / 0 |
| May 29, 1995 | F2 | 23 mi | 2.5 mi | 0 / 1 |
| May 6, 1991 | F2 | 21 mi | 1 mi | 0 / 3 |
| Oct 18, 1990 | F2 | 22 mi | 0.1 mi | 0 / 59 |
The strongest 12 of 77, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Glen Rock
The Storm Prediction Center has 53 hail reports within 10 miles of Glen Rock since 1962, made on 37 separate days. Of these, 28 were 1 inch across or larger, and 4 reached 2 inches. The largest, 2.5 inches (tennis ball size), fell on July 30, 1999. The most recent report is from March 16, 2025. May has the most reports, 18.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Glen Rock
The nearest NOAA station with 1991–2020 climate normals is Millers 4 NE, MD, 5 miles southwest of Glen Rock at 860 feet. July is the warmest, with an average high of 85°F and low of 64°F; January is the coolest, at 40°F and 24°F. September is the wettest at 5.1 inches of precipitation on average and February the driest at 2.9 inches; the year adds up to 47.8 inches over 81 days with at least a tenth of an inch. June to November, the hurricane season months, bring 53% of the year's precipitation (25.4 of 47.8 inches); the other six months are drier. Highs reach 90°F on about 12 days a year, almost all from June to August. Lows fall below freezing on about 101 nights a year. Snowfall averages 34.1 inches a year, most of it in February. That 47.8 inches is more than at 109 of the 148 Pennsylvania stations used on this site (74%). Seven Valleys, 5 miles north, has its own station (York 3 SSW Pump Stn, PA): 46.4 inches a year, 1.4 less than here, and a July average high of 88°F against 85°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 40 | 24 | 3.6 | 7 | 9.7 |
| Feb | 43 | 25 | 2.9 | 6 | 10.8 |
| Mar | 52 | 32 | 4.1 | 7 | 6.3 |
| Apr | 65 | 42 | 3.8 | 7 | 0.5 |
| May | 73 | 51 | 4.0 | 8 | 0.0 |
| Jun | 81 | 60 | 3.8 | 7 | 0.0 |
| Jul | 85 | 64 | 4.7 | 7 | 0.0 |
| Aug | 83 | 63 | 4.2 | 7 | 0.0 |
| Sep | 77 | 56 | 5.1 | 7 | 0.0 |
| Oct | 65 | 45 | 4.2 | 6 | 0.2 |
| Nov | 54 | 36 | 3.4 | 6 | 1.0 |
| Dec | 44 | 28 | 4.0 | 7 | 5.6 |
| Year | 63 | 44 | 47.8 | 81 | 34.1 |
Averages for 1991–2020 at Millers 4 NE, MD (860 ft), from NOAA NCEI U.S. Climate Normals. 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 Glen Rock
Since 1996, the National Weather Service has logged 211 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Glen Rock: 179 thunderstorm wind reports, 19 flash floods, 12 floods and 1 lightning strike. They killed 2 people and injured 11, and the NWS estimated $2.4 million in property and crop damage. The strongest thunderstorm gust on record here was 86 mph, on August 26, 1999. July has had the most flash floods, 9 of 19. Of the 788 Pennsylvania cities on this site with a flash flood on record, 321 have had fewer than Glen Rock.
July 8, 2014: thunderstorm wind 6 miles from the centre of Glen Rock — 1 killed, 8 injured, $500 damage.
June 6, 2026: thunderstorm wind 9 miles from the centre of Glen Rock — 1 killed.
June 1, 2007: lightning strike 8 miles from the centre of Glen Rock — 2 injured.
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 Glen Rock's ZIP code 17327 have filed 115 claims with the National Flood Insurance Program since 1978, and were paid $995,000 for buildings and contents, in the dollars of each year. The most came from Tropical Storm Lee in 2011: 19 claims (17% of all) and $315,000. The year with the most claims was 1979, with 50. 30% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 553 Pennsylvania cities on this site with 10 or more claims, 397 have fewer than Glen Rock.
| Event | Claims | Paid |
|---|---|---|
| Tropical Storm Lee2011 | 19 | $315,000 |
York County, which includes Glen Rock, has been named in 21 federal disaster or emergency declarations since 1972, 14 of them major disasters (by incident: 6 floods, 5 hurricanes, 4 snowstorms, 3 severe storms). The latest major disaster declaration was Remnants of Hurricane Ida, on September 10, 2021. FEMA's National Risk Index gives York County a Relatively Moderate rating for natural hazard risk overall; by hazard: Relatively High for inland flooding, strong wind and lightning; Relatively Moderate for hurricanes and heat waves; Relatively Low for tornadoes; Very Low for hail. It models the county's expected loss from all 18 hazards it covers at $106.0 million a year, the 10th highest of 67 Pennsylvania counties; of the hazards above, the largest share, $69.0 million (65%), 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.
Cities near Glen Rock
- Shrewsbury, PA4 mi
- New Freedom, PA4 mi
- Seven Valleys, PA5 mi
- Glenville, PA6 mi
- Freeland, MD6 mi
- Jacobus, PA7 mi
- Stewartstown, PA8 mi
- Spring Grove, PA8 mi
- Manchester, MD9 mi
- Parkton, MD10 mi
- Dallastown, PA10 mi
- Felton, PA11 mi
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