Tornadoes, hail, floods and severe storms recorded here between 1953 and 2026, from NOAA's Storm Events Database. Search an address to see which tornadoes came closest to it.
The part of each tornado’s path NOAA recorded in this county, 14 in all. Zoom in and the paths widen to their surveyed width.
Hover or tap a bar to see that year.
NOAA's storm database records tornadoes back to 1950 and hail and thunderstorm wind back to 1955, but floods only from 1996 on. Older floods are missing here. For those, the U.S. Geological Survey's stream gauge records and flood reports are the place to look.
The strongest tornadoes, deadliest events and biggest damage here, up to 50.
May 31, 1985 · Northumberland, Pennsylvania
Tornado F3 Tornado2 deaths, 20 injuries, $25.0M damage July 18, 2003 · Northumberland, Pennsylvania
Lightning struck a tent at Knoebles Amusement Park, injuring 6 people. Four were taken to the hospital for a checkup.
June 14, 2026 · Northumberland, Pennsylvania
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down throughout Lewis Township.
June 11, 2026 · Northumberland, Pennsylvania
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked multiple trees down throughout Riverside.
June 6, 2026 · Northumberland, Pennsylvania
A severe thunderstorm, producing wind gusts estimated near 60 mph, knocked a tree down onto a vehicle in the 1600 block of State Route 405 south of Milton.
June 6, 2026 · Northumberland, Pennsylvania
A severe thunderstorm, producing wind gusts estimated near 60 mph, knocked down numerous large tree limbs across Avenue F in Riverside.
January 25, 2026 · Northumberland, Pennsylvania
Heavy snow began in the early morning of January 25 and continued into the evening, with most of Northumberland seeing 8-10 inches of snow. The highest snowfall total in the county occurred near Sunbury, where 13.5 inches was measured.
January 1, 2026 · Northumberland, Pennsylvania
SNOW SQUALL. A snow squall brought visibility less than one quarter of a mile with heavy snow observed on State Route 54 on Natalie Mountain. Heavy snowfall allowed for quick accumulation on the roadway in a span of 10 to 15 minutes. Winds were observed to gust near 30 mph as the…
July 30, 2025 · Northumberland, Pennsylvania
Well-above average temperatures, coupled with humid conditions, allowed for heat index values to range between 100 and 105 degrees during the afternoon hours of July 30, 2025 across Northumberland County. Northumberland County Airport (KN79) reported multiple hours of heat index …
July 25, 2025 · Northumberland, Pennsylvania
A severe thunderstorm, producing wind gusts estimated near 60 mph, knocked a tree down onto Clark Road near Snydertown.
July 25, 2025 · Northumberland, Pennsylvania
A severe thunderstorm, producing wind gusts estimated near 60 mph, knocked a tree down onto South Main Street in Herndon.
June 26, 2025 · Northumberland, Pennsylvania
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down along the 6500 block of PA-147 which blocked a lane of traffic.
June 23, 2025 · Northumberland, Pennsylvania
Well-above average temperatures, coupled with humid conditions, allowed for multiple days of heat index values over 100 degrees beginning during the afternoon hours of June 22nd and continuing through the late evening hours of June 25, 2025 across Northumberland County. Heat inde…
June 19, 2025 · Northumberland, Pennsylvania
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked multiple trees down across West Chilisquaque Township.
June 19, 2025 · Northumberland, Pennsylvania
A severe thunderstorm, producing wind gusts estimated near 70 mph, knocked down and uprooted multiple trees in Milton. Shingles were also blown off on some residences in Milton.
May 1, 2025 · Northumberland, Pennsylvania
Severe (D2) drought continued for much of Northumberland County until the U.S. Drought Monitor update on May 13, 2025, when all remaining D2 conditions were removed.
April 29, 2025 · Northumberland, Pennsylvania
A 68 mph wind gust was measured on the Route 147 bridge near Sunbury as a line of severe thunderstorms moved through on April 29, 2025.
April 29, 2025 · Northumberland, Pennsylvania
A line of severe thunderstorms producing wind gusts estimated at 70 mph knocked down trees and wires in Sunbury. The wind caused a building to collapse on Julia Street.
April 1, 2025 · Northumberland, Pennsylvania
Continued dry conditions allowed for D2 (severe) drought conditions to continue across southeastern Northumberland County throughout all of April 2025.
March 1, 2025 · Northumberland, Pennsylvania
Continued dry conditions allowed for D2 (severe) drought conditions to continue across southeastern Northumberland County throughout all of March 2025. Mandatory water conservation measures were continued for communities served by the Roaring Creek Water plant throughout all of M…
February 20, 2025 · Northumberland, Pennsylvania
Light snow showers impacted Northumberland County beginning during the evening of February 20, 2025 and into the early morning hours of February 21. While snow accumulation on roadways was minor, a tractor trailer travelling on State Route 54 in Coal Township rolled over just pri…
February 1, 2025 · Northumberland, Pennsylvania
Continued dry conditions allowed for D2 (severe) drought conditions to continue across southeastern Northumberland County throughout all of February 2025.
January 21, 2025 · Northumberland, Pennsylvania
An extended period of well-below average temperatures across Northumberland County allowed for wind chills across localized cold areas to range between -10 to -15 degrees during the early morning hours on January 21, 2025. Temperatures did warm throughout the day; however, cold w…
January 1, 2025 · Northumberland, Pennsylvania
Continued dry conditions allowed for D2 (severe) drought conditions to continue across southeastern Northumberland County throughout all of January 2025.
December 1, 2024 · Northumberland, Pennsylvania
Continued dry conditions allowed for D2 (severe) drought conditions to continue across southeastern Northumberland County throughout all of December 2024.
November 5, 2024 · Northumberland, Pennsylvania
D2 (severe) drought conditions began across southeastern Northumberland County in early November 2024 and continued through the end of November 2024.
September 21, 2024 · Northumberland, Pennsylvania
Heavy rainfall led to 2 to 3 feet of standing water on a roadway, with vehicles stranded in Northumberland borough.
July 10, 2024 · Northumberland, Pennsylvania
A severe thunderstorm producing winds estimated near 60 mph knocked down a tree onto a residence in Milton along with multiple trees and power lines down blocking roadways in Milton.
June 30, 2024 · Northumberland, Pennsylvania
A severe thunderstorm with winds estimated at 60 mph knocked down multiple trees into wires along Upper Road west of Gowen City.
June 29, 2024 · Northumberland, Pennsylvania
A severe thunderstorm producing winds estimated at 60 mph uprooted multiple trees in the borough of Mount Carmel.
June 29, 2024 · Northumberland, Pennsylvania
A severe thunderstorm producing winds estimated at 60 mph knocked down multiple trees which blocked both lanes of traffic along Route 147 approximately 1 mile south of Hummels Wharf.
June 29, 2024 · Northumberland, Pennsylvania
A severe thunderstorm producing winds estimated at 60 mph knocked down multiple trees which blocked the northbound lanes of Route 147 approximately 1 mile northeast of Herndon.
June 29, 2024 · Northumberland, Pennsylvania
A severe thunderstorm producing winds estimated at 60 mph knocked down multiple large tree branches which damaged multiple mail boxes along Sunbury Street in the town of Dalmatia.
June 22, 2024 · Northumberland, Pennsylvania
A severe thunderstorm producing wind gusts estimated at 60 mph knocked a tree down onto Susquehanna Trail 2 miles west of Turbotville.
June 22, 2024 · Northumberland, Pennsylvania
A strong thunderstorm producing wind gusts estimated at 55 mph knocked a tree and pole down 3 miles west-northwest of Elysburg. A vehicle crashed into the downed pole.
May 23, 2024 · Northumberland, Pennsylvania
A severe thunderstorm producing winds estimated near 60 mph knocked down a tree onto wires at the intersection of State Route 405 and 14th Street near Kapp Heights and Northumberland.
May 23, 2024 · Northumberland, Pennsylvania
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple power poles onto and along US Route 11 west of Danville.
April 14, 2024 · Northumberland, Pennsylvania
A thunderstorm produced penny-sized hail in Sunbury.
April 14, 2024 · Northumberland, Pennsylvania
A severe thunderstorm with winds estimated at 60 mph knocked down multiple trees across roads in Milton.
February 17, 2024 · Northumberland, Pennsylvania
SNOW SQUALL. A PennDOT RWIS station on Route 54 on Natalie Mountain near Kulpmont observed a sharp drop in visibility to around 1/4 mile in a snow squall.
February 13, 2024 · Northumberland, Pennsylvania
A winter storm moving into Northumberland County on the late evening hours of February 12 and into the morning hours of February 13, 2024 brought a brief period of initial rain before producing 6 to 8 inches of snowfall.
January 14, 2024 · Northumberland, Pennsylvania
SNOW SQUALL. Drops in visibility and heavy snowfall observed on the RWIS data network and webcams near Natalie.
September 7, 2023 · Northumberland, Pennsylvania
A thunderstorm produced penny-sized hail west of Pillow.
September 7, 2023 · Northumberland, Pennsylvania
A severe thunderstorm producing winds estimated near 60 mph knocked down large tree limbs onto State Route 54 northwest of Elysburg.
August 7, 2023 · Northumberland, Pennsylvania
A severe thunderstorm producing winds estimated near 60 mph knocked down trees onto wires north of Elysburg.
July 24, 2023 · Northumberland, Pennsylvania
A severe thunderstorm produced quarter sized hail southwest of McEwensville.
July 9, 2023 · Northumberland, Pennsylvania
A garage roof blew off and struck a propane tank along Plum Creek Road to the east of Sunbury.
July 9, 2023 · Northumberland, Pennsylvania
Heavy rainfall estimated around 3 inches led to the closure of Brush Valley Road between Schock and Tressler roads in Rockefeller Township due to flash flooding.
July 9, 2023 · Northumberland, Pennsylvania
Heavy rainfall estimated around 3 inches led to the closure of Route 61 between Highland Avenue in Sunbury and Green Street in Upper Augusta Township due to flash flooding.
July 9, 2023 · Northumberland, Pennsylvania
Heavy rainfall estimated around 3 inches caused flash flooding east of Sunbury, with emergency responders conducting a water rescue on Plum Creek Road.