Lancaster County
Population 10,995 (2025) 133 sq mi
Property owners in Lancaster County have filed 396 federal flood insurance claims since 1978, 20th 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 195010
- Tropical cyclone tracks within 100 miles since 1851, wider where stronger67
- Major flood years since 19782
At a glance
The record for Lancaster 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, 28.3 miles away
Tornadoes
About one every 7.6 years since 1950, none rated F3/EF3 or stronger.
Strongest
August 4, 2020
EF2, 15.6 mile path
500 yards wide.
Most recent
Tuesday, July 5, 2022
EF0, 11.5 mile path
4 years ago.
Every recorded tornado
| Jul 5, 2022 | EF0 | 11.5 | 0 | 0 |
| Aug 4, 2020 | EF2 | 15.6 | 5 | 0 |
| Aug 7, 2017 | EF0 | 2.1 | 0 | 0 |
| Apr 6, 2017 | EF1 | 3.7 | 0 | 0 |
| Feb 24, 2016 | EF1 | 6.1 | 0 | 0 |
| Jun 18, 2015 | EF0 | 3.8 | 0 | 0 |
| May 25, 2004 | F1 | 0.1 | 0 | 0 |
| Aug 6, 1993 | F0 | 1.0 | 0 | 0 |
| May 10, 1990 | F1 | 4.1 | 0 | 0 |
| Sep 6, 1975 | F1 | 2.3 | 0 | 0 |
- Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Lancaster 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
28.3 miles at closest approach, winds near 96 mph.
Most recent
July 9, 2021
Elsa, Tropical storm
3.5 miles at closest approach.
Every storm within 100 miles
| Elsa | 2021 | 3.5 | Tropical storm |
| Claudette | 2021 | 98.5 | Tropical storm |
| Zeta | 2020 | 33.2 | Post-tropical |
| Isaias | 2020 | 11.0 | Tropical storm |
| Fay | 2020 | 85.7 | Tropical storm |
| Nestor | 2019 | 35.4 | Post-tropical |
| Michael | 2018 | 45.3 | Post-tropical |
| Andrea | 2013 | 15.5 | Post-tropical |
| Irene | 2011 | 53.1 | Category 1 |
| Hanna | 2008 | 3.7 | Tropical storm |
| Barry | 2007 | 94.3 | Post-tropical |
| Ernesto | 2006 | 7.3 | Post-tropical |
| Gaston | 2004 | 17.3 | Tropical storm |
| Charley | 2004 | 45.6 | Post-tropical |
| Isabel | 2003 | 86.3 | Tropical storm |
| Helene | 2000 | 74.3 | Tropical storm |
| Floyd | 1999 | 37.3 | Tropical storm |
| Earl | 1998 | 95.8 | Post-tropical |
| Danny | 1997 | 68.6 | Tropical storm |
| Josephine | 1996 | 89.8 | Post-tropical |
| Bertha | 1996 | 0.0 | Tropical storm |
| Danielle | 1992 | 44.1 | Tropical storm |
| Charley | 1986 | 59.4 | Category 1 |
| Gloria | 1985 | 80.3 | Category 2 |
| Dean | 1983 | 0.0 | Tropical storm |
| Doria | 1971 | 26.4 | Tropical storm |
| Alma | 1970 | 83.4 | Tropical storm |
| Camille | 1969 | 35.3 | Tropical storm |
| Doria | 1967 | 57.4 | Tropical storm |
| Cleo | 1964 | 90.5 | Tropical storm |
| Unnamed | 1963 | 9.9 | Tropical storm |
| Unnamed | 1961 | 29.2 | Tropical storm |
| Donna | 1960 | 79.4 | Category 2 |
| Brenda | 1960 | 10.4 | Tropical storm |
| Cindy | 1959 | 35.7 | Tropical storm |
| Unnamed | 1956 | 74.9 | Post-tropical |
| Flossy | 1956 | 83.7 | Post-tropical |
| Ione | 1955 | 77.1 | Category 1 |
| Connie | 1955 | 7.1 | Tropical storm |
| Hazel | 1954 | 64.4 | Post-tropical |
| Barbara | 1953 | 64.5 | Category 1 |
| Able | 1952 | 96.0 | Tropical storm |
| Unnamed | 1945 | 38.1 | Post-tropical |
| Unnamed | 1944 | 8.0 | Post-tropical |
| Unnamed | 1944 | 93.8 | Category 3 |
| Unnamed | 1944 | 25.1 | Tropical storm |
| Unnamed | 1943 | 24.1 | Tropical storm |
| Unnamed | 1936 | 88.7 | Category 1 |
| Unnamed | 1935 | 41.9 | Tropical storm |
| Unnamed | 1933 | 13.0 | Tropical storm |
| Unnamed | 1929 | 33.5 | Post-tropical |
| Unnamed | 1928 | 45.5 | Post-tropical |
| Unnamed | 1928 | 2.7 | Post-tropical |
| Unnamed | 1925 | 89.1 | Post-tropical |
| Unnamed | 1924 | 21.4 | Post-tropical |
| Unnamed | 1916 | 17.4 | Post-tropical |
| Unnamed | 1915 | 85.4 | Tropical storm |
| Unnamed | 1907 | 61.0 | Post-tropical |
| Unnamed | 1904 | 4.1 | Tropical storm |
| Unnamed | 1903 | 93.0 | Category 1 |
| Unnamed | 1902 | 14.8 | Post-tropical |
| Unnamed | 1902 | 0.0 | Post-tropical |
| Unnamed | 1900 | 86.4 | Post-tropical |
| Unnamed | 1899 | 33.2 | Post-tropical |
| Unnamed | 1899 | 94.3 | Category 1 |
| Unnamed | 1897 | 83.1 | Tropical storm |
| Unnamed | 1894 | 45.3 | Category 1 |
| Unnamed | 1894 | 82.2 | Category 1 |
| Unnamed | 1893 | 43.5 | Tropical storm |
| Unnamed | 1893 | 86.8 | Category 1 |
| Unnamed | 1893 | 90.5 | Tropical storm |
| Unnamed | 1893 | 74.7 | Tropical storm |
| Unnamed | 1889 | 19.5 | Tropical storm |
| Unnamed | 1888 | 81.5 | Tropical storm |
| Unnamed | 1888 | 4.3 | Tropical storm |
| Unnamed | 1887 | 77.9 | Post-tropical |
| Unnamed | 1886 | 6.5 | Tropical storm |
| Unnamed | 1885 | 89.6 | Post-tropical |
| Unnamed | 1882 | 25.6 | Tropical storm |
| Unnamed | 1882 | 8.1 | Tropical storm |
| Unnamed | 1881 | 41.9 | Tropical storm |
| Unnamed | 1879 | 53.0 | Category 2 |
| Unnamed | 1878 | 28.3 | Category 2 |
| Unnamed | 1877 | 1.6 | Post-tropical |
| Unnamed | 1876 | 36.5 | Tropical storm |
| Unnamed | 1874 | 8.4 | Tropical storm |
| Unnamed | 1872 | 0.0 | Tropical storm |
| Unnamed | 1866 | 95.6 | Tropical storm |
| Unnamed | 1863 | 21.1 | Tropical storm |
| Unnamed | 1861 | 82.2 | Tropical storm |
| Unnamed | 1861 | 29.2 | Tropical storm |
| Unnamed | 1859 | 9.8 | Tropical storm |
| Unnamed | 1857 | 94.7 | Tropical storm |
| Unnamed | 1856 | 34.2 | Tropical storm |
| Unnamed | 1854 | 58.9 | Tropical storm |
| Unnamed | 1851 | 82.9 | 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
11.6 days a year
Medium or heavy smoke, 2016 to 2025.
2025
10 days
Medium or heavy smoke. 34 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
396 federal flood insurance claims since 1985, with $5.8 million paid.
Most claims in one year
2003: 154 claims
$2.8 million paid.
2nd most
2006: 137 claims
$2.6 million paid.
3rd most
2009: 22 claims
$173,000 paid.
Claims by ZIP code
| 22578 | 280 | $4.3 million |
| 22503 | 65 | $759,000 |
| 22523 | 22 | $241,000 |
| 22480 | 16 | $336,000 |
| 22576 | 5 | $37,000 |
Flood events since 1996
- Heavy Rain35
- Flash Flood26
- Coastal Flood24
- Flood5
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
Chesapeake Bay at Windmill Point (IN MLLW), 5.28 ft
2.28 feet above the 3.0 ft flood stage; major flooding by today’s categories.
Most recent moderate or major crest
September 25, 2026
Chesapeake Bay at Windmill Point (IN MLLW), 4.09 ft
Major flooding.
River gauges
| Chesapeake Bay at Windmill Point (IN MLLW) | 3.0 | 5.28 ft | 13 |
- 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, Windmill Point
21 days
May 2023 to April 2024.
Last ten years
11.5 days a year
At Windmill Point, 2016–26.
Moderate or major
12 days
Since 1996, 0 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 103 of 1,581 months since 1895 (7%); the longest spell lasted 13 months.
103
Months in severe drought or worse since 1895
33
Months in extreme drought
7%
Share of all months, severe or worse
3
Drought reports to the Weather Service since 1996
Lowest reading
February 1931
−6.75, extreme drought
Longest severe spell
13 months
July 1930 to July 1931.
Latest month
September 2026
−1.58, mild drought
Last severe month: August 2010.
- 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
5 earthquakes of magnitude 2.5 or more within 50 miles since 1985; 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; 48.5 miles away, 11.9 miles deep.
Most recent, magnitude 3 or more
October 2, 2010
Magnitude 3.0
10 km NNW of Ashland, Virginia; 48.5 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
0.4 ft, Windmill Point, VA
From Northwest Atlantic Ocean.
On record
1 tsunami
Since 2013.
| Jun 13, 2013 | Northwest Atlantic Ocean | 0.4 | 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
296 events in the National Weather Service record, 287 of them since 1996.
11
Hail reports, 1 inch or larger
0
Hail, 2 inches or larger
69
Damaging gusts, 58 mph+
74
Winter weather events since 1996
5
Heat events since 1996
2
Cold events since 1996
Largest hail
April 21, 2000
1.75 inches
Strongest measured or estimated gust
May 2, 1989
115 mph
More event types since 1996
| Lightning | 2 | 0 |
Costliest events since 1996
- Aug 4, 2020Tornado$3.0 million
National Weather Service narrative
A damage survey conducted by the NWS Wakefield office found a path of storm damage consistent with an EF2 tornado. The tornado touched down near Windmill Point Lane then rapidly intensified as it crossed over Antipoison Creek. Numerous houses in the Antipoison Neck area along Tammy Drive, Clark Point Drive, Deep Water Drive, Wayne Circle, Chesapeake Trail, and others experienced significant roof loss and structural damage consistent with EF2 intensity. One house had the upper portions shifted off the main structure. Similar roof and structural damage continued as the tornado moved north into areas near Ocran Road, Squires Road and Bald Eagle Road in the Poplar Neck area. This is…
- Jul 12, 2009Thunderstorm Wind$1.0 million
National Weather Service narrative
Several large trees and power lines were downed. Several trees fell through houses.
- Jul 12, 2009Thunderstorm Wind$1.0 million
National Weather Service narrative
Numerous large trees and power lines were downed. Trees were downed on several houses. Tomato cannery collapsed.
- Oct 2, 2015Coastal Flood, Lancaster$1.0 million
National Weather Service narrative
A tidal departure of 2 to 3 feet resulted in moderate flooding along the Rappahannock River and Chesapeake Bay. Several roads were closed, and a number of homes and other buildings sustained flood related damage.
- Jul 12, 2009Thunderstorm Wind$1.0 million
National Weather Service narrative
Several trees were downed across roads and on houses.
- Sep 15, 1999Hurricane (Typhoon), Lancaster$560,000
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, Lancaster$500,000
National Weather Service narrative
The peak tide height at Windmill Point was 4.62 feet above MLLW, which was 3.05 feet above the astronomical tide. Many streets, homes and businesses were flooded in low lying areas of the county close or directly exposed to the Chesapeake Bay. The Tides Inn reported damage to the electric services at their commercial docking facilities.
- Feb 24, 2016Tornado$377,000
National Weather Service narrative
The tornado that began as an EF0 in Middlesex county, intensified briefly to an EF1 in the Norwood Church Road area near Flagstaff Road in Lancaster county. In this area, a brick wall on a garage was flattened, the roof was ripped off a house, and an outbuilding was destroyed. Numerous large trees were snapped including two foot diameter pine trees. The tornado continued north and northeast for a short distance before lifting.
- Oct 28, 2012Coastal Flood, Lancaster$200,000
National Weather Service narrative
Water levels reached 2.0 feet to 3.5 feet above normal adjacent to the Chesapeake Bay and Rappahannock River resulting in moderate to severe coastal flooding. Windmill Point reached a tide height of 4.38 feet MLLW.
- Sep 1, 2006High Wind, Lancaster$200,000
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…
- 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 W Point 2 Nw, 22.1 miles from the county’s population centre, with records from 1954.
- All-time high
- 106°F2 times, most recently Jul 25, 2010
- All-time low
- −7°FJan 21, 1985
- Warmest night
- 79°F7 times, most recently Jul 6, 2024
- Coldest day
- 14°FJan 9, 1970
- Wettest day
- 10.75 inSep 16, 1999
- Snowiest day
- 12.5 inJan 25, 2000
- Hottest year
- 1990mean 61.1°F
- Coldest year
- 1966mean 56.6°F
- Wettest year
- 200367.57 in
- Driest year
- 196527.65 in
- Snowiest season
- 34.1 in1979-80
Median first snow
December 26
Earliest: November 11, 1987
Median last snow
February 21
Latest: April 13, 1957
3 of 70 winters had no measurable snow.
Station W Point 2 Nw (USC00449025), 20 ft elevation, 22.1 miles from the population centre. Daily records from 1954 to October 22, 2026; 99.8% 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 |
| Jul 23, 1977 | Drought | EM-3046-VA |
| Jan 26, 1977 | Freezing | DR-525-VA |
| Jun 23, 1972 | Flood | DR-339-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 Lancaster County stands among 133 counties in Virginia and 3,143 in the United States.
| Tornadoes since 1950 | 10 | 37 / 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 | 396 | 20 / 133 |
| Flood insurance paid | $5.8 million | 25 / 133 |
| Disaster declarations | 25 | 10 / 133 |
| Flood events since 1996 | 90 | 43 / 133 |
| Hail and wind events since 1996 | 98 | 102 / 133 |
| Winter storm events since 1996 | 74 | 77 / 133 |
| Reported damage since 1996 | $12.8 million | 53 / 133 |
| River crests at major flood stage | 13 | 14 / 133 |
| High tide flooding days a year, last 10 years | 11.5 | 6 / 133 |
| Months in severe drought since 1895 | 103 | 44 / 133 |
| Medium or heavy smoke days a year, last 10 years | 11.6 | 37 / 133 |
| Earthquakes M4+ within 50 mi since 1900 | 0 | — |
| Earthquakes M2.5+ in the county since 1973 | 0 | — |
Neighbouring counties
| Northumberland County | 11 | 35 |
| Richmond County | 10 | 27 |
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 USC00449025.
- 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.