Northumberland County
Population 12,557 (2025) 191 sq mi
Property owners in Northumberland County have filed 385 federal flood insurance claims since 1978, 21st most of 133 counties in Virginia.
Hazard fingerprint Each spoke is this county’s percentile among U.S. counties where that hazard occurs. How it is computed
- Tornado damage paths since 195011
- Tropical cyclone tracks within 100 miles since 1851, wider where stronger68
- Major flood years since 19782
At a glance
The record for Northumberland County in eight numbers. Each links to its section below.
Tropical cyclones within 50 mi
35
20th of 133 in Virginia
2 at hurricane strength since 1851
DetailsStrongest tornado
EF2
August 4, 2020, 15.6 mile path
Strongest tropical cyclone
Cat. 2
Hurricane (unnamed), 1878, 27.6 miles away
Tornadoes
About one every 6.9 years since 1950, none rated F3/EF3 or stronger.
Strongest
August 4, 2020
EF2, 15.6 mile path
500 yards wide.
Most recent
Wednesday, April 3, 2024
EF1, 5.8 mile path
2 years ago.
Every recorded tornado
| Apr 3, 2024 | EF1 | 5.8 | 0 | 0 |
| May 3, 2021 | EF2 | 4.4 | 0 | 0 |
| Aug 4, 2020 | EF1 | 2.2 | 0 | 0 |
| Aug 4, 2020 | EF2 | 15.6 | 5 | 0 |
| Apr 15, 2019 | EF0 | 1.3 | 0 | 0 |
| Jan 14, 2005 | F1 | 1.0 | 0 | 0 |
| Sep 10, 1997 | F1 | 0.3 | 0 | 0 |
| Jul 12, 1996 | F1 | 4.5 | 9 | 0 |
| May 2, 1989 | F1 | 0.5 | 0 | 0 |
| May 2, 1989 | F2 | 5.0 | 0 | 0 |
| Aug 10, 1969 | F0 | 0.1 | 0 | 0 |
- Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Northumberland County: 0.
- 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.
Hurricanes and tropical storms
35 passed within 50 miles since 1851; 2 at hurricane strength.
Strongest within 50 miles
October 23, 1878
Unnamed storm, Category 2
27.6 miles at closest approach, winds near 96 mph.
Most recent
July 9, 2021
Elsa, Tropical storm
5.9 miles at closest approach.
Every storm within 100 miles
| Elsa | 2021 | 5.9 | Tropical storm |
| Zeta | 2020 | 27.4 | Post-tropical |
| Isaias | 2020 | 14.3 | Tropical storm |
| Fay | 2020 | 84.9 | Tropical storm |
| Nestor | 2019 | 40.6 | Post-tropical |
| Michael | 2018 | 50.5 | Post-tropical |
| Andrea | 2013 | 20.8 | Post-tropical |
| Irene | 2011 | 55.9 | Category 1 |
| Hanna | 2008 | 9.5 | Tropical storm |
| Barry | 2007 | 98.2 | Post-tropical |
| Ernesto | 2006 | 5.8 | Post-tropical |
| Gaston | 2004 | 21.2 | Tropical storm |
| Charley | 2004 | 49.3 | Post-tropical |
| Isabel | 2003 | 91.4 | Tropical storm |
| Helene | 2000 | 79.0 | Tropical storm |
| Floyd | 1999 | 41.5 | Tropical storm |
| Danny | 1997 | 73.7 | Tropical storm |
| Josephine | 1996 | 94.4 | Post-tropical |
| Bertha | 1996 | 0.9 | Tropical storm |
| Danielle | 1992 | 39.0 | Tropical storm |
| Charley | 1986 | 62.9 | Category 1 |
| Gloria | 1985 | 82.4 | Category 2 |
| Dean | 1983 | 1.4 | Tropical storm |
| Doria | 1971 | 28.7 | Tropical storm |
| Alma | 1970 | 89.8 | Tropical storm |
| Camille | 1969 | 40.5 | Tropical storm |
| Doria | 1967 | 61.2 | Tropical storm |
| Cleo | 1964 | 95.8 | Tropical storm |
| Unnamed | 1963 | 4.8 | Tropical storm |
| Unnamed | 1961 | 32.2 | Tropical storm |
| Donna | 1960 | 83.6 | Category 2 |
| Brenda | 1960 | 14.0 | Tropical storm |
| Cindy | 1959 | 40.2 | Tropical storm |
| Unnamed | 1956 | 79.3 | Post-tropical |
| Flossy | 1956 | 88.0 | Post-tropical |
| Ione | 1955 | 82.3 | Category 1 |
| Diane | 1955 | 94.1 | Tropical storm |
| Connie | 1955 | 3.4 | Tropical storm |
| Hazel | 1954 | 61.4 | Post-tropical |
| Barbara | 1953 | 68.5 | Category 1 |
| Able | 1952 | 86.6 | Tropical storm |
| Unnamed | 1949 | 95.3 | Tropical storm |
| Unnamed | 1945 | 29.3 | Post-tropical |
| Unnamed | 1944 | 13.2 | Post-tropical |
| Unnamed | 1944 | 97.0 | Category 3 |
| Unnamed | 1944 | 14.3 | Tropical storm |
| Unnamed | 1943 | 13.9 | Tropical storm |
| Unnamed | 1936 | 92.0 | Category 1 |
| Unnamed | 1935 | 47.2 | Tropical storm |
| Unnamed | 1934 | 87.9 | Post-tropical |
| Unnamed | 1933 | 15.7 | Tropical storm |
| Unnamed | 1929 | 29.3 | Post-tropical |
| Unnamed | 1928 | 46.8 | Post-tropical |
| Unnamed | 1928 | 0.0 | Post-tropical |
| Unnamed | 1925 | 93.5 | Post-tropical |
| Unnamed | 1924 | 24.9 | Post-tropical |
| Unnamed | 1916 | 22.4 | Post-tropical |
| Unnamed | 1915 | 76.0 | Tropical storm |
| Unnamed | 1907 | 65.8 | Post-tropical |
| Unnamed | 1904 | 1.2 | Tropical storm |
| Unnamed | 1903 | 89.5 | Category 1 |
| Unnamed | 1902 | 5.6 | Post-tropical |
| Unnamed | 1902 | 5.9 | Post-tropical |
| Unnamed | 1900 | 89.2 | Post-tropical |
| Unnamed | 1899 | 26.9 | Post-tropical |
| Unnamed | 1899 | 99.5 | Category 1 |
| Unnamed | 1897 | 87.9 | Tropical storm |
| Unnamed | 1894 | 48.4 | Category 1 |
| Unnamed | 1894 | 86.0 | Category 1 |
| Unnamed | 1893 | 37.6 | Tropical storm |
| Unnamed | 1893 | 84.7 | Category 1 |
| Unnamed | 1893 | 81.7 | Tropical storm |
| Unnamed | 1893 | 79.6 | Tropical storm |
| Unnamed | 1889 | 24.4 | Tropical storm |
| Unnamed | 1888 | 85.1 | Tropical storm |
| Unnamed | 1888 | 2.3 | Tropical storm |
| Unnamed | 1887 | 82.9 | Post-tropical |
| Unnamed | 1886 | 8.4 | Tropical storm |
| Unnamed | 1885 | 86.6 | Post-tropical |
| Unnamed | 1882 | 28.2 | Tropical storm |
| Unnamed | 1882 | 11.8 | Tropical storm |
| Unnamed | 1881 | 46.6 | Tropical storm |
| Unnamed | 1879 | 56.4 | Category 2 |
| Unnamed | 1878 | 27.6 | Category 2 |
| Unnamed | 1877 | 9.7 | Post-tropical |
| Unnamed | 1876 | 37.5 | Tropical storm |
| Unnamed | 1874 | 0.0 | Tropical storm |
| Unnamed | 1872 | 0.0 | Tropical storm |
| Unnamed | 1866 | 94.3 | Tropical storm |
| Unnamed | 1863 | 22.1 | Tropical storm |
| Unnamed | 1861 | 86.0 | Tropical storm |
| Unnamed | 1861 | 27.9 | Tropical storm |
| Unnamed | 1859 | 15.3 | Tropical storm |
| Unnamed | 1857 | 99.9 | Tropical storm |
| Unnamed | 1856 | 38.1 | Tropical storm |
| Unnamed | 1854 | 63.7 | Tropical storm |
| Unnamed | 1851 | 87.8 | Tropical storm |
- 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.
Wildfire and smoke
No large wildfire has been mapped here since satellite mapping began in 1984.
Smoke overhead
Smokiest year
2023: 52 days
Heavy smoke on 11 days in 2023, the most of any year.
Last 10 years
12.1 days a year
Medium or heavy smoke, 2016 to 2025.
2025
10 days
Medium or heavy smoke. 32 so far in 2026.
- 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.
Floods and flood insurance
385 federal flood insurance claims since 1982, with $6.9 million paid.
Most claims in one year
2006: 131 claims
$3.7 million paid.
2nd most
2003: 122 claims
$2.4 million paid.
3rd most
2011: 21 claims
$198,000 paid.
Claims by ZIP code
| 22511 | 194 | $4.7 million |
| 22482 | 81 | $900,000 |
| 22473 | 49 | $267,000 |
| 22539 | 18 | $85,000 |
| 22435 | 15 | $832,000 |
| 22579 | 11 | $44,000 |
| 22505 | 6 | $53,000 |
Flood events since 1996
- Heavy Rain39
- Coastal Flood31
- Flash Flood16
- Flood4
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
Most severe crest
September 1, 2006
Potomac River at Lewisetta (IN MLLW), 5.76 ft
2.76 feet above the 3.0 ft flood stage; major flooding by today’s categories.
Most recent moderate or major crest
September 24, 2026
Potomac River at Lewisetta (IN MLLW), 3.96 ft
Moderate flooding.
River gauges
| Potomac River at Lewisetta (IN MLLW) | 3.0 | 5.76 ft | 11 |
- 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.
High tide flooding
Most in one year, Lewisetta
22 days
May 2023 to April 2024.
Last ten years
12.7 days a year
At Lewisetta, 2016–26.
Moderate or major
12 days
Since 1971, 3 of them major.
- High tide flooding days are days on which a NOAA tide gauge recorded water at or above NOAA's minor flood threshold, set from the gauge's tide range, counted by meteorological year (May to April). These are the counts in NOAA's annual high tide flooding reports; they are not National Weather Service flood stages. Years with less than 80 percent of data are left out.
NOAA CO-OPS high tide flooding counts, through April 2026, retrieved October 30, 2026.
Drought
In severe drought or worse for 105 of 1,581 months since 1895 (7%); the longest spell lasted 12 months.
105
Months in severe drought or worse since 1895
34
Months in extreme drought
7%
Share of all months, severe or worse
2
Drought reports to the Weather Service since 1996
Lowest reading
February 1931
−6.82, extreme drought
Longest severe spell
12 months
March 1930 to February 1931.
Latest month
September 2026
−2.21, moderate drought
Last severe month: January 2025.
- 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.
Earthquakes and tsunamis
2 earthquakes of magnitude 2.5 or more within 50 miles since 1995; none reached magnitude 4.
0
Magnitude 2.5+ inside the county since 1973
1
Magnitude 3+ within 50 miles since 1973
0
Magnitude 4+ within 50 miles since 1900
0
Magnitude 5+ within 50 miles since 1900
Largest within 50 miles
October 2, 2010
Magnitude 3.0
10 km NNW of Ashland, Virginia; 48.9 miles away, 11.9 miles deep.
Most recent, magnitude 3 or more
October 2, 2010
Magnitude 3.0
10 km NNW of Ashland, Virginia; 48.9 miles away.
- 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).
- 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.
Tsunamis
Highest water recorded
Jun 13, 2013
0.1 ft, Lewisetta, VA
From Northwest Atlantic Ocean.
On record
1 tsunami
Since 2013.
| Jun 13, 2013 | Northwest Atlantic Ocean | 0.1 | 0 |
- Places where NOAA's Global Historical Tsunami Database records a tsunami's water arriving, with the greatest height it reached above sea level at the time. Only tsunamis NOAA rates probable or definite are counted. Heights from eyewitness accounts and tide gauges are mixed, and older events are less completely recorded.
NOAA NCEI/WDS Global Historical Tsunami Database, retrieved October 30, 2026.
Severe weather and other events
324 events in the National Weather Service record, 310 of them since 1996.
6
Hail reports, 1 inch or larger
0
Hail, 2 inches or larger
86
Damaging gusts, 58 mph+
84
Winter weather events since 1996
5
Heat events since 1996
2
Cold events since 1996
Largest hail
April 9, 1998
1.75 inches
Strongest measured or estimated gust
June 26, 1988
81 mph
Costliest events since 1996
- Sep 1, 2006Coastal Flood, Northumberland$19.7 million
National Weather Service narrative
Tides of 4 to 5 feet above normal...combined with 6 to 8 foot waves caused significant damage to homes, piers, bulkheads, boats, and marinas across portions of the Virginia's Northern Neck and Eastern Shore near the Chesapeake Bay, Atlantic Ocean and adjacent tributaries. Some of the most significant damage occurred in the Lewisetta area of Northumberland county.
- Sep 1, 2006High Wind, Northumberland$15.0 million
National Weather Service narrative
The remnants of Ernesto along the Mid Atlantic coast combined with strong high pressure over New England produced very strong winds across eastern and southeast Virginia. Sustained winds in mph ranged from the lower 40s to near 60 with maximum gusts ranging from the mid 50s to as high as the mid 70s. Some higher sustained winds included 60 mph (52 knots) at York River Range Light and York River United States Coast Guard, and 56 mph (49 knots) at Wallops Island (WAL). Some higher maximum gusts included 76 mph (66 knots) at York River Range Light, and 75 mph (65 knots) at York River USCG. The high winds caused numerous downed trees and power outages, along with significant…
- Aug 4, 2020Tornado$626,000
National Weather Service narrative
A damage survey conducted by the NWS Wakefield office found a path of storm damage consistent with an EF1 tornado. The tornado moved onshore from the Chesapeake Bay in the town of Fleeton, crossing Fleeton Road where several houses experienced roof and siding damage. In addition, trees were snapped and uprooted. The tornado then crossed over the Wicomico River and then moved back onshore near Timbs Road where trees were uprooted and snapped, and a few houses experienced roof and siding damage. The tornado then moved northward to near Buzzards Point Road, destroying a canopy, before lifting.
- Sep 15, 1999Hurricane (Typhoon), Northumberland$617,000
National Weather Service narrative
Hurricane Floyd was a Category 1 hurricane as it crossed the Wakefield WFO county warning area. Sustained tropical storm force winds with gusts to near hurricane force occurred over the northwest quadrant of the storm over interior portions of northeast North Carolina and along the coastal waters of the Wakefield marine area. The center of the storm crossed the county warning area along an Elizabeth City to Currituck county to Sandbridge Virginia Beach axis. The highest sustained wind speed recorded was 69 mph at Chesapeake Light (CHLV2). Other sustained wind speeds were 46 mph at Langley Air Force Base (LFI), 44 mph at Norfolk Naval Air Station (NGU), and 41 mph at Oceana Naval…
- Nov 12, 2009Coastal Flood, Northumberland$500,000
National Weather Service narrative
Several streets, homes and businesses were flooded in low lying areas of the county close or directly exposed to the Chesapeake Bay. There were also damaged piers, bulkheads, and groins.
- May 3, 2021Tornado$500,000
National Weather Service narrative
A tornado touched down along Richmond Road (Route 360) just southwest of Callao. The tornado was EF0 intensity at its beginning as it tracked northeast crossing Lakeside Drive just east of Callao. The tornado then crossed Northumberland Highway (Route 360), intensifying as it approached Chambers Lane. The tornado quickly reached EF2 intensity as it crossed Chambers Lane destroying one home and damaging several others. The destroyed home was built in the 1970s and based on builder inspector data was constructed to withstand 100 mph wind. In this same area, another home lost its garage causing severe damage to the home. In this area, winds were estimated around 120 mph at the…
- Apr 3, 2024Tornado$274,000
National Weather Service narrative
A tornado tracked from Richmond County across Ridge Road and into Northumberland County where it caused mainly EF-0 damage to Quinton Oaks Gulf course as several hardwood trees were knocked down along with a storage shed which was destroyed. Additional damage was caused to a double wide manufactured home off of Ridge Road which had large sections of its roof ripped off. The tornado then intensified as it crossed Azalea Lane and Owl Town Road where numerous hardwood trees were snapped along with two houses which had portions of their roofs lifted off. One of these houses had its garage wall blown out and the other had multiple walls collapse and cave in. The damage in this area was…
- Jul 12, 1996Tornado$250,000
National Weather Service narrative
Tornado damage occurred from Burgess to Oyster Cove. The most significant damage was found in the Edwardsville area, where nearly 20 mobile homes were severely damaged or destroyed. Numerous trees were downed or suffered damage. Nine, mostly minor, injuries were reported.
- Oct 28, 2012Coastal Flood, Northumberland$200,000
National Weather Service narrative
Water levels reached 2.0 feet to 3.5 feet above normal adjacent to the Chesapeake Bay and Potomac River resulting in moderate to severe coastal flooding.
- Oct 28, 2021Coastal Flood, Northumberland$200,000
National Weather Service narrative
Strong low pressure tracked from the Middle Mississippi Valley east northeast toward the Northeast United States from Thursday, October 28th into Saturday, October 30th. This system produced very strong east southeast winds, then strong south to southwest winds through the period. This caused moderate to major (tidal) coastal flooding across portions of Northumberland county adjacent to the Potomac River. Lewisetta reached 4.78 feet MLLW at 900 pm on Friday, October 29.
- 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.
Weather records
From Patuxent River NAS, 28.5 miles from the county’s population centre, with records from 1945.
- All-time high
- 104°F3 times, most recently Jun 25, 2025
- All-time low
- −3°F2 times, most recently Jan 17, 1977
- Warmest night
- 85°FAug 12, 2005
- Coldest day
- 10°FJan 19, 1994
- Wettest day
- 11.76 inSep 30, 2010
- Snowiest day
- 17.6 inJan 7, 1996
- Hottest year
- 2024mean 62.0°F
- Coldest year
- 1988mean 55.2°F
- Wettest year
- 201863.66 in
- Driest year
- 196328.25 in
Station Patuxent River NAS (USW00013721), 39 ft elevation, 28.5 miles from the population centre. Daily records from 1945 to October 26, 2026; 89.4% 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.
Federal disaster declarations
25 since 1953. The most recent: Severe Winter Storm, January 23, 2026.
| Jan 23, 2026 | Winter Storm | EM-3631-VA |
| May 10, 2021 | Severe Ice Storm | DR-4602-VA |
| Apr 2, 2020 | Biological | DR-4512-VA |
| Mar 13, 2020 | Biological | EM-3448-VA |
| Dec 18, 2018 | Hurricane | DR-4411-VA |
| Oct 15, 2018 | Hurricane | DR-4401-VA |
| Sep 11, 2018 | Hurricane | EM-3403-VA |
| Nov 26, 2012 | Hurricane | DR-4092-VA |
| Oct 29, 2012 | Hurricane | EM-3359-VA |
| Sep 3, 2011 | Hurricane | DR-4024-VA |
| Aug 26, 2011 | Hurricane | EM-3329-VA |
| Sep 22, 2006 | Severe Storm | DR-1661-VA |
| Sep 12, 2005 | Hurricane | EM-3240-VA |
| Sep 18, 2003 | Hurricane | DR-1491-VA |
| Feb 28, 2000 | Severe Storm | DR-1318-VA |
| Sep 18, 1999 | Hurricane | DR-1293-VA |
| Sep 16, 1999 | Hurricane | EM-3147-VA |
| Sep 6, 1996 | Hurricane | DR-1135-VA |
| Jan 13, 1996 | Snowstorm | DR-1086-VA |
| Mar 10, 1994 | Snowstorm | DR-1014-VA |
| Mar 25, 1993 | Snowstorm | EM-3112-VA |
| Nov 9, 1985 | Flood | DR-755-VA |
| Jan 26, 1977 | Freezing | DR-525-VA |
| Jun 23, 1972 | Flood | DR-339-VA |
| Aug 23, 1969 | Hurricane | DR-274-VA |
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.
How this compares
Where Northumberland County stands among 133 counties in Virginia and 3,143 in the United States.
| Tornadoes since 1950 | 11 | 29 / 133 |
| Tornadoes rated F3/EF3 or stronger | 0 | — |
| Tropical cyclones within 50 mi | 35 | 20 / 133 |
| Hurricane-strength passes within 50 mi | 2 | 35 / 133 |
| Wildfire acres since 1984 | 0 | — |
| Flood insurance claims | 385 | 21 / 133 |
| Flood insurance paid | $6.9 million | 18 / 133 |
| Disaster declarations | 25 | 10 / 133 |
| Flood events since 1996 | 90 | 43 / 133 |
| Hail and wind events since 1996 | 111 | 97 / 133 |
| Winter storm events since 1996 | 84 | 61 / 133 |
| Reported damage since 1996 | $38.9 million | 19 / 133 |
| River crests at major flood stage | 11 | 17 / 133 |
| High tide flooding days a year, last 10 years | 12.7 | 3 / 133 |
| Months in severe drought since 1895 | 105 | 37 / 133 |
| Medium or heavy smoke days a year, last 10 years | 12.1 | 13 / 133 |
| Earthquakes M4+ within 50 mi since 1900 | 0 | — |
| Earthquakes M2.5+ in the county since 1973 | 0 | — |
Neighbouring counties
| Lancaster County | 10 | 35 |
| Richmond County | 10 | 27 |
| Westmoreland County | 7 | 25 |
Sources and vintage
Every number on this page comes from these public records.
- 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 USW00013721.
- River crests NOAA National Weather Service, National Water Prediction Service river gauges, retrieved October 30, 2026.
- Tide gauges NOAA CO-OPS high tide flooding counts, 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.
- Tsunamis NOAA NCEI/WDS Global Historical Tsunami Database.
- 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.