Mifflin County, Pennsylvania
County storm and disaster record · FIPS 42087 · population 46,143 · 411 sq mi
NOAA's Storm Events Database holds 309 records for Mifflin County, Pennsylvania from 1950 through June 30, 2026, on 243 days; the most frequent are severe thunderstorm wind events (162 records). The deadliest single record is the July 26, 2012 thunderstorm wind: 1 death. FEMA has issued 17 declarations naming the county since 1972, 15 of them for natural hazards; the latest for a natural hazard was “Hurricane Sandy” on October 29, 2012.
The record, 1950 to 2026
Storm records filed for the county each year (2026 to June 30, 2026). Before 1996 NOAA recorded only tornadoes (from 1950), thunderstorm wind and hail (from 1955).
- recorded, no damage figure
- under $100,000
- $100,000 or more
- $1 million or more
- $10 million or more, or a death
- $100 million or more, or 10 deaths
- a year's colour: its recorded damage or deaths
- a year with a death
- 1955: wind and hail recorded from 1955
- 1996: all 48 event types from 1996
- Storm records
- 309on 243 days, 1950 to June 30, 2026
- Deaths recorded
- 26 injuries
- Damage, 2025 dollars
- $2.6Mas filed (scale steps before 1993)
- Tornadoes
- 5strongest EF2
- FEMA declarations
- 17latest 2020
Source: NOAA NCEI Storm Events Database, records through June 30, 2026 (file revision 20260918); damage converted to 2025 dollars with the BLS CPI-U. Search the record at NCEI. BLS consumer price index.
What hazards hit Mifflin County most?
The most frequent records are severe thunderstorm wind events: 162 since 1988. 49% of its severe thunderstorm wind events since 1988 fell in June and July. The rank column places the county among Pennsylvania's counties by days with a record per 1,000 square miles of land over each hazard's complete period.
| Hazard | Records | Days | First, last | Killed | Injured | Damage | Rank in state |
|---|---|---|---|---|---|---|---|
| Severe thunderstorm wind | 162 | 117 | 1988-2026 | 1 | 0 | $588K | 36 of 67 |
| Winter storms | 64 | 63 | 1996-2026 | 0 | 0 | $8K | 33 of 67 |
| Hail | 22 | 17 | 1985-2026 | 0 | 0 | $71K | 53 of 67 |
| High wind and dust storms | 22 | 22 | 1999-2025 | 0 | 2 | $128K | 22 of 67 |
| Floods | 16 | 15 | 1996-2026 | 1 | 0 | $137K | 57 of 67 |
| Extreme cold | 6 | 5 | 2007-2025 | 0 | 0 | – | 46 of 67 |
| Heat | 6 | 6 | 2006-2025 | 0 | 0 | – | 19 of 67 |
| Tornadoes | 5 | 5 | 1952-2019 | 0 | 4 | $1.7M | 52 of 67 |
| Drought | 4 | 4 | 1997-1999 | 0 | 0 | – | 31 of 67 |
| Hurricanes and tropical storms | 1 | 1 | 2003-2003 | 0 | 0 | – | 15 of 67 |
| Fog, smoke and funnel clouds | 1 | 1 | 2011-2011 | 0 | 0 | – | 29 of 67 |
Source: NOAA NCEI Storm Events Database (county and forecast-zone records attributed to the county; a zone record shows its own totals on each county it covers). Days: dates with at least one record of the hazard in the county. Ranks: days with a record per 1,000 square miles of land (Census Bureau 2024 Gazetteer), since 1950 for tornadoes, 1955 for hail and thunderstorm wind, 1996 for the rest.
How many tornadoes has Mifflin County had?
NOAA records 5 tornadoes in Mifflin County from 1952 to 2019, the strongest rated EF2, with 0 deaths and 4 injuries recorded in the county. A tornado that crossed a county line is counted in each county it touched, with the length of its path inside the county.
Counted as whole tornadoes rather than county records, the Storm Prediction Center's database holds 5 tornadoes whose track touched Mifflin County since 1950 (NOAA's county records number 5, the same count); along their whole tracks they killed 0 people.
Map of the strongest tornado tracks in Pennsylvania.
Every tornado record filed for Mifflin County (5)
| Date | Place | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2019-04-19 | Granville, Mifflin County | EF2 4.9 mi x 200 yd | 0 | 0 | $577K |
| 1996-11-08 | Burnham, Mifflin County | F1 1 mi x 50 yd | 0 | 0 | $75K |
| 1983-07-21 | Mifflin County | F1 0.2 mi x 10 yd | 0 | 0 | $250K step |
| 1954-03-15 | Mifflin County | F0 2 mi x 3 yd | 0 | 0 | $250 step |
| 1952-07-23 | Mifflin County | F2 | 0 | 4 | $25K step |
A damage figure marked "step" is a record from before 1993: NOAA then filed damage by category, and the figure is the category as entered, in the dollars of that year, not an estimate of the loss.
Source: NOAA NCEI Storm Events Database, tornado records by county (path length in the county, maximum width); ratings as published: F scale before February 1, 2007, EF scale after. Whole-track figures: NOAA Storm Prediction Center tornado database (1950-2025). SPC severe weather database.
When was the last damaging storm in Mifflin County?
The most recent record with damage, injuries or deaths is the June 11, 2026 thunderstorm wind ($5,000 in damage in 2025 dollars).
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2026-06-11 | Thunderstorm WindLongfellow, Mifflin County | 52 kt wind | 0 | 0 | $5K |
| 2026-06-11 | Thunderstorm WindLumber City, Mifflin County | 52 kt wind | 0 | 0 | $5K |
| 2026-06-11 | Thunderstorm WindYeagertown, Mifflin County | 52 kt wind | 0 | 0 | $1K |
| 2026-06-10 | FloodLewistown, Mifflin County | 0 | 0 | – | |
| 2026-03-22 | HailLumber City, Mifflin County | 1.00 in hail | 0 | 0 | – |
| 2026-01-24 | Heavy SnowMifflin County · forecast zone Mifflin | 0 | 0 | – | |
| 2026-01-11 | Winter WeatherMifflin County · forecast zone Mifflin | 0 | 0 | – | |
| 2026-01-01 | Winter WeatherMifflin County · forecast zone Mifflin | 0 | 0 | – | |
| 2026-01-01 | Winter WeatherMifflin County · forecast zone Mifflin | 0 | 0 | – | |
| 2025-12-29 | High WindMifflin County · forecast zone Mifflin | 53 kt wind | 0 | 0 | – |
| 2025-07-30 | HeatMifflin County · forecast zone Mifflin | 0 | 0 | – | |
| 2025-07-25 | HeatMifflin County · forecast zone Mifflin | 0 | 0 | – |
Source: NOAA NCEI Storm Events Database; every record of 2025-2026 is listed, earlier ones when they caused deaths, injuries or $250,000 of damage (2025 dollars), and every tornado.
The deadliest and costliest records
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2012-07-26 | Thunderstorm WindBurnham, Mifflin County Thunderstorm winds estimated near 60 mph knocked down several large tree branches at the Derry Township Community Park in south Burnham along Derry Park Road and Logan Boulevard. A 16-year-old female was killed when a falling tree branch struck her in the head. | 50 kt wind | 1 | 0 | – |
| 2004-09-17 | FloodMifflin County · forecast zone Mifflin | 1 | 0 | – | |
| 1952-07-23 | TornadoMifflin County | F2 | 0 | 4 | $25K step |
| 2016-04-03 | High WindMifflin County · forecast zone Mifflin Non-thunderstorm wind gusts estimated around 60 mph collapsed a trailer near Lewistown with a family inside. There were two injuries. | 52 kt wind | 0 | 2 | $31K |
A damage figure marked "step" is a record from before 1993: NOAA then filed damage by category, and the figure is the category as entered, in the dollars of that year, not an estimate of the loss.
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2019-04-19 | TornadoGranville, Mifflin County | EF2 4.9 mi x 200 yd | 0 | 0 | $577K |
| 1996-11-08 | TornadoBurnham, Mifflin County | F1 1 mi x 50 yd | 0 | 0 | $75K |
| 2016-04-03 | High WindMifflin County · forecast zone Mifflin | 52 kt wind | 0 | 2 | $31K |
| 2010-04-08 | Thunderstorm WindLumber City, Mifflin County | 70 kt wind | 0 | 0 | $20K |
| 2025-04-15 | Strong WindMifflin County · forecast zone Mifflin | 39 kt wind | 0 | 0 | $5K |
| 2025-07-25 | Thunderstorm WindWagner, Mifflin County | 52 kt wind | 0 | 0 | $2K |
| 2025-04-15 | Thunderstorm WindSiglerville, Mifflin County | 52 kt wind | 0 | 0 | $1K |
Before 1993 NOAA filed damage by category, not amount, so the list above starts in 1993. The highest category filed here before then (entered as $250K, in the dollars of the day) holds: July 21, 1983 (tornado, Mifflin County).
Source: NOAA NCEI Storm Events Database: deaths and injuries direct and indirect; damage is property plus crops as estimated by the National Weather Service, converted to 2025 dollars.
Is it getting more frequent?
Records per decade for Mifflin County's most frequent hazards. Counts rose everywhere after 1996, when NOAA began recording every event type, so compare decades within a hazard's complete period only (the shaded cells come before it).
| Hazard | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020-26 |
|---|---|---|---|---|---|---|---|---|
| Severe thunderstorm wind | 0 | 0 | 0 | 3 | 29 | 33 | 63 | 34 |
| Winter storms | – | – | – | – | 12 | 24 | 15 | 13 |
| Hail | 0 | 0 | 0 | 1 | 6 | 6 | 6 | 3 |
| High wind and dust storms | – | – | – | – | 1 | 11 | 6 | 4 |
| Floods | – | – | – | – | 8 | 2 | 4 | 2 |
Source: NOAA NCEI Storm Events Database, records per calendar decade; zone records from the CZ_TYPE field (Z).
What time of year?
49% of its severe thunderstorm wind events since 1988 fell in June and July. The two busiest months are in violet.
The values, month by month
Jan 25 · Feb 30 · Mar 15 · Apr 25 · May 24 · Jun 49 · Jul 51 · Aug 38 · Sep 17 · Oct 6 · Nov 10 · Dec 19 (records).
Source: NOAA NCEI Storm Events Database, records by the month they began.
Federal disaster declarations for Mifflin County
FEMA's register lists 17 declarations that include Mifflin County: 11 major disasters, 6 emergencies and 0 fire management assistance declarations. Most were for flood (7) and hurricane (3).
| Declared | Number | Type | Title |
|---|---|---|---|
| 2020-03-30 | DR-4506 | Biological | Covid-19 Pandemic |
| 2020-03-13 | EM-3441 | Biological | Covid-19 |
| 2012-10-29 | EM-3356 | Hurricane | Hurricane Sandy |
| 2011-09-12 | DR-4030 | Flood | Tropical Storm Lee |
| 2011-09-08 | EM-3340 | Flood | Remnants of Tropical Storm Lee |
| 2005-09-10 | EM-3235 | Hurricane | Hurricane Katrina |
| 2004-09-19 | DR-1555 | Severe Storm | Severe Storms and Flooding Associated With Tropical Depression Frances |
| 2004-09-19 | DR-1557 | Hurricane | Tropical Depression Ivan |
| 2003-03-14 | EM-3180 | Severe Storm | Snow |
| 1996-09-13 | DR-1138 | Flood | Flooding Associated With Tropical Depression Fran |
| 1996-01-21 | DR-1093 | Flood | Severe Storms and Flooding |
| 1996-01-13 | DR-1085 | Snowstorm | Blizzard of 96 |
| 1994-03-10 | DR-1015 | Severe Storm | Severe Winter Storms |
| 1993-03-16 | EM-3105 | Snowstorm | Severe Snowfall & Winter Storm |
| 1976-10-20 | DR-523 | Flood | Severe Storms & Flooding |
| 1975-09-26 | DR-485 | Flood | Severe Storms, Heavy Rains & Flooding |
| 1972-06-23 | DR-340 | Flood | Tropical Storm Agnes |
Source: FEMA OpenFEMA Disaster Declarations Summaries (v2), declarations through October 2, 2026; one declaration is counted once however many areas it names. OpenFEMA dataset page.
How many floods has Mifflin County had?
NOAA's Storm Events Database holds 16 flood or flash flood records for Mifflin County from 1996 to 2026, on 15 days, with 1 death. By flood insurance claims since 1978 (OpenFEMA, as of September 8, 2026), Mifflin County ranks 516th of 2,942 U.S. counties.
| Storm | Began | Records | Deaths in the county |
|---|---|---|---|
| Tropical Depression Ivan | 2004-09-17 | 1 | 1 |
The National Flood Insurance Program has paid $3.9 million on 487 claims filed in Mifflin County; the most in one year was 159 in 1996. Claims count insured losses only: uninsured flood damage is not in this file.
The values, year by year
1978: 11 · 1979: 37 · 1980: 4 · 1981: 4 · 1983: 1 · 1984: 96 · 1989: 10 · 1993: 5 · 1994: 1 · 1996: 159 · 1997: 1 · 1998: 1 · 2001: 1 · 2004: 114 · 2005: 1 · 2008: 6 · 2010: 4 · 2011: 2 · 2012: 2 · 2014: 16 · 2018: 1 · 2019: 1 · 2021: 9; the other years: 0.
Source: FEMA OpenFEMA NFIP Redacted Claims, as of September 8, 2026; claims by year of loss, payments in the dollars of the year paid. OpenFEMA dataset page.
FEMA's modeled risk for Mifflin County
FEMA's National Risk Index rates Mifflin County Relatively Low overall, with an expected annual loss of $18.4 million. These are FEMA's model estimates of future loss from 18 hazards, not a count of what happened; they can differ from the record above.
| Hazard | Risk rating | Expected annual loss | Modeled frequency |
|---|---|---|---|
| Riverine Flooding | Relatively Moderate | $15M | once in about 2 years (modeled) |
| Winter Weather | Relatively Moderate | $143K | 13 a year (modeled) |
| Strong Wind | Relatively Moderate | $783K | 3.4 a year (modeled) |
| Lightning | Relatively Moderate | $281K | 35 a year (modeled) |
| Landslide | Relatively Low | $10K | once in about 2 years (modeled) |
| Hurricane | Relatively Low | $891K | once in about 17 years (modeled) |
| Heat Wave | Relatively Low | $170K | 1.8 modeled event-days a year |
| Tornado | Relatively Low | $604K | once in about 6 years (modeled) |
Source: FEMA National Risk Index, county table, December 2025 release. FEMA's National Risk Index map.
Counties that share a border with Mifflin County
Source: U.S. Census Bureau county adjacency file; NOAA NCEI Storm Events Database, records since 1950. The Census Bureau's adjacency file.
Next
- Tornadoes in PennsylvaniaEvery Pennsylvania tornado since 1950 and the counties with the most per square mile
- Severe thunderstorm wind in PennsylvaniaThe state's severe thunderstorm wind events, by county, year and month
- The Pennsylvania recordEvery hazard in the state, its deadliest events and its federal declarations
- FEMA's risk rating for each hazard in Mifflin CountyThe hazard risk calculator: 18 hazards beside the county's record
- Download Mifflin County's FEMA declarations (CSV)17 rows: every declaration that named the county, for your own analysis