Montour County

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Montour County: 0.
2. Weak tornadoes were under-recorded before Doppler radar coverage became national in the early 1990s, so earlier decades read low. Ratings use the Fujita scale before February 2007 and the Enhanced Fujita scale after.

Storm Prediction Center severe weather database, 1950 to 2025.

Every storm within 100 miles

1. Tropical storms and hurricanes (34 kt or more, still tropical) at closest approach. Post-tropical remnants with gale-force winds are listed but not counted. Direct: track within 50 miles; near: within 100 miles. Distance is measured to the county boundary for counties and to the city centre for cities, using positions interpolated hourly between HURDAT2 fixes.

National Hurricane Center HURDAT2, 1851 to 2025.

Smoke overhead

1. A smoke day is a date on which a smoke plume traced by NOAA Hazard Mapping System analysts from satellite imagery covered this place's point (the county's population centre or the city centre). Counts here are of medium or heavy smoke. Since 2018 analysts have often drawn light smoke as one area over most of the continent, so light-smoke counts are not comparable from year to year. The plumes show smoke anywhere in the air above, not air quality at the ground, and smoke hidden by cloud is missed.

NOAA Hazard Mapping System smoke analysis, 2011 to 2026, retrieved October 30, 2026.

Claims by ZIP code

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).

OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026. NOAA Storm Events through 2026.

River crests

River gauges

1. Crests are the highest and the recent crests the National Weather Service lists for each river gauge in the county that has a flood stage, not every flood. Flood categories use each gauge's current flood stages; crests from before levees, dams or channel changes may not be comparable. Crests measured on an old datum are left out of the rankings.

NOAA National Water Prediction Service gauge records, retrieved October 30, 2026.

1. The Palmer Drought Severity Index is computed by NOAA each month from the county's average temperature and precipitation, relative to the county's own climate. Zero is normal; -3 or lower is severe drought and -4 or lower extreme drought. It describes the long-term balance of moisture, not water supply or crop losses.

NOAA NCEI nClimDiv county Palmer Drought Severity Index, 1895 to September 2026, issued October 6, 2026.

Every earthquake of magnitude 4 or more within 50 miles

1. Earthquakes of magnitude 2.5 or more in the USGS Comprehensive Catalog since 1900. Within 50 miles means the epicentre lies within 50 miles of the county boundary (or inside the county).
2. Small earthquakes were under-recorded before the modern seismic networks of the 1970s and are still missed in remote areas, so early decades read low. Magnitudes are as the catalogue reports them and mix scales (moment, local and body-wave).

USGS ANSS Comprehensive Earthquake Catalog, 1900 to present, retrieved October 30, 2026.

Costliest events since 1996

1. Jun 20, 2001Thunderstorm Wind$500,000
   National Weather Service narrative

   An 80-foot by 120-foot crop production facility was destroyed in Washingtonville by straight line winds estimated to be 80 mph. Debris from the building was found one-half mile away. Numerous trees were also reported down in the area.

2. Apr 14, 2019Thunderstorm Wind$300,000
   National Weather Service narrative

   A National Weather Service storm survey confirmed straight line wind damage near Limestoneville in Montour County Pennsylvania on April 15, 2019.||Several pockets of damage along and north of the Limestone Ridge in Montour County were surveyed. A single family home near the intersection of Limestone Rd and Bypass Rd sustained roof damage, as well as structural damage to one exterior brick house wall. Farther northeast, a barn on Fairview Rd near Delong Rd was destroyed. Along the damage path, several trees were knocked down. Damage in the more severe damage areas were characteristic of a downburst, with peak winds estimated near 105 mph.

3. Sep 7, 2011Flood$100,000
   National Weather Service narrative

   The Susquehanna River at Danville crested above moderate flood stage at 31.55 feet. This was the 2nd highest crest on record.||Heavy rainfall from the remnants of Tropical Storm Lee caused extensive flooding across Montour County. Several roads were closed due to small stream flooding. A levee breech was reported on the Mahoning Creek in Danville, resulting in the flooding of the Danville Plaza shopping center. A nearby playground, gas station and school were flooded as a result of the levee breech as well. A preliminary total of 97 buildings were impacted by the flooding in Montour County, with two buildings being destroyed in the flooding, nine buildings suffering major damage…

4. Aug 25, 2007Thunderstorm Wind$40,000
   National Weather Service narrative

   A mobile home trailer on an elevated platform at the top of hill in a field was demolished by a 60 mph wind gust. Debris from trailer was scattered across the field and blocked by nearby rows of corn. This damage occurred about 2 miles north of Elysburg.| |Less than a half mile to the southwest at the intersection of Rte 54 and SR2109 near the Montour/Northumberland county line, a large branch was blown off a tree falling directly on 2 parked vehicles underneath it.

5. Dec 12, 2000High Wind, Montour$14,000
6. Aug 14, 1999Thunderstorm Wind$10,000
7. Jul 9, 1999Thunderstorm Wind$10,000
8. May 15, 2018Thunderstorm Wind$10,000
   National Weather Service narrative

   A severe thunderstorm producing winds estimated near 80 mph knocked down numerous trees in Danville.

9. May 15, 2018Thunderstorm Wind$10,000
   National Weather Service narrative

   A severe thunderstorm producing winds estimated near 80 mph overturned a tractor trailer on the bridge between Danville and Riverside.

10. Sep 16, 1999Flash Flood$10,000

1. Storm Events records before 1996 cover only tornadoes, thunderstorm wind and hail. Damage figures are as reported by the National Weather Service at the time, not adjusted for inflation.

NOAA NCEI Storm Events Database, 1950 to 2026, issued October 26, 2026.

All-time high

103°F3 times, most recently Jul 22, 2011

All-time low

−20°FJan 21, 1994

Warmest night

78°FJul 15, 1995

Coldest day

0°FJan 17, 1982

Wettest day

8.66 inJun 22, 1972

Snowiest day

20.0 inFeb 19, 1972

Hottest year

2024mean 54.3°F

Coldest year

1965mean 48.4°F

Wettest year

201170.26 in

Driest year

199730.08 in

Snowiest season

85.9 in1995-96

Station Williamsport Regional Airport (USW00014778), 524 ft elevation, 22.8 miles from the population centre. Daily records from 1948 to October 26, 2026; 100.0% of days in the last 30 years are complete. Records at a single station can differ from a city’s official threaded record, which may combine several stations.

NOAA NCEI Global Historical Climatology Network Daily.

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).

OpenFEMA Disaster Declarations Summaries, retrieved October 30, 2026. Statewide declarations are not listed.

Neighbouring counties

• Tornadoes NOAA Storm Prediction Center severe weather database, through 2025.
• Tropical cyclones NOAA National Hurricane Center HURDAT2 (Atlantic; Northeast and Central Pacific), through 2025.
• Wildfire USGS/USFS Monitoring Trends in Burn Severity, through 2026.
• Storm events NOAA NCEI Storm Events Database, through 2026.
• Flood insurance OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026.
• Declarations OpenFEMA Disaster Declarations Summaries v2, retrieved October 30, 2026.
• Weather records NOAA NCEI Global Historical Climatology Network Daily, station USW00014778.
• River crests NOAA National Weather Service, National Water Prediction Service river gauges, retrieved October 30, 2026.
• Drought NOAA NCEI nClimDiv county Palmer Drought Severity Index, through September 2026.
• Smoke NOAA NESDIS Hazard Mapping System smoke analysis, retrieved October 30, 2026.
• Earthquakes USGS ANSS Comprehensive Earthquake Catalog (ComCat), retrieved October 30, 2026.

Joins, thresholds and known limits are set out in the methodology. Found an error? Report it. Page built October 30, 2026.