Scott County
Population 37,975 (2025) 420 sq mi
Scott County has recorded 49 tornadoes since 1950, 8th most of 115 counties in Missouri; the most recent was on May 16, 2025.
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 195049
- Tropical cyclone tracks within 100 miles since 1851, wider where stronger2
- Major flood years since 19785
At a glance
The record for Scott County in eight numbers. Each links to its section below.
Tropical cyclones within 50 mi
1
19th of 115 in Missouri
None at hurricane strength since 1851
DetailsStrongest tornado
EF3
May 26, 2024, 19.6 mile path
Strongest tropical cyclone
TS
Tropical storm (unnamed), 1941, 18.4 miles away
Federal disaster declarations
31
Most recent: Severe Storms, Straight-Line Winds, Tornadoes, and Flooding, 2026
DetailsTornadoes
About one every 1.6 years since 1950, 3 of them rated F3/EF3 or stronger.
Strongest
May 26, 2024
EF3, 19.6 mile path
300 yards wide.
Deadliest
December 18, 1957
3 killed, F2
1 injured along the whole path.
Most recent
Friday, May 16, 2025
EF1, 1.3 mile path
Within the past year.
Every recorded tornado
| May 16, 2025 | EF1 | 1.3 | 0 | 0 |
| May 16, 2025 | EF0 | 0.6 | 0 | 0 |
| May 16, 2025 | EF3 | 16.1 | 10 | 2 |
| Apr 2, 2025 | EF1 | 1.0 | 0 | 0 |
| Mar 14, 2025 | EF2 | 6.4 | 0 | 0 |
| May 26, 2024 | EF3 | 19.6 | 0 | 0 |
| May 26, 2024 | EF2 | 25.6 | 0 | 0 |
| Jul 24, 2023 | EF2 | 0.3 | 2 | 0 |
| May 29, 2019 | EF1 | 1.0 | 0 | 0 |
| Jul 8, 2015 | EF1 | 6.3 | 0 | 0 |
| Nov 17, 2013 | EF3 | 14.2 | 0 | 0 |
| Jun 4, 2012 | EF2 | 0.5 | 0 | 3 |
| Feb 29, 2012 | EF1 | 15.7 | 0 | 0 |
| May 25, 2011 | EF0 | 0.4 | 0 | 0 |
| Apr 27, 2011 | EF0 | 0.2 | 0 | 0 |
| Apr 2, 2006 | F0 | 1.5 | 0 | 0 |
| Feb 16, 2006 | F1 | 0.5 | 0 | 0 |
| Oct 26, 2004 | F0 | 0.3 | 0 | 0 |
| Oct 26, 2004 | F1 | 0.1 | 0 | 0 |
| May 6, 2003 | F1 | 5.0 | 0 | 0 |
| May 4, 2003 | F2 | 11.5 | 0 | 0 |
| Oct 24, 2001 | F1 | 2.5 | 0 | 0 |
| Aug 7, 2001 | F0 | 0.1 | 0 | 0 |
| May 23, 2000 | F0 | 0.2 | 0 | 0 |
| Jan 21, 1999 | F1 | 0.5 | 0 | 0 |
| Jan 21, 1999 | F0 | 0.2 | 0 | 0 |
| Jan 21, 1999 | F1 | 1.7 | 0 | 0 |
| Jan 21, 1999 | F1 | 0.8 | 0 | 0 |
| Jan 21, 1999 | F0 | 0.8 | 0 | 0 |
| Jun 13, 1997 | F0 | 0.1 | 0 | 0 |
| Apr 28, 1994 | F0 | 0.1 | 0 | 0 |
| Feb 13, 1991 | F1 | 5.0 | 0 | 0 |
| May 15, 1986 | F2 | 4.0 | 15 | 1 |
| May 15, 1986 | F2 | 9.0 | 19 | 0 |
| May 15, 1986 | F1 | 15.0 | 0 | 0 |
| May 24, 1981 | F2 | 9.1 | 1 | 0 |
| Apr 22, 1981 | F0 | 1.0 | 0 | 0 |
| Apr 22, 1981 | F1 | 1.0 | 0 | 0 |
| Apr 22, 1981 | F1 | 1.0 | 0 | 0 |
| Mar 20, 1976 | F1 | 1.0 | 1 | 0 |
| Dec 15, 1971 | F2 | 27.0 | 26 | 1 |
| May 9, 1970 | F0 | 0.1 | 0 | 0 |
| Apr 19, 1970 | F1 | 0.2 | 0 | 0 |
| Oct 24, 1967 | F2 | 0.1 | 0 | 0 |
| May 29, 1962 | F1 | 0.2 | 2 | 0 |
| Mar 29, 1960 | F1 | 0.2 | 1 | 0 |
| Jul 16, 1959 | F0 | 0.2 | 0 | 0 |
| Dec 18, 1957 | F2 | 0.5 | 1 | 3 |
| Apr 22, 1955 | F2 | 0.2 | 0 | 0 |
- Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Scott County: 10.
- 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
1 passed within 50 miles since 1851; none at hurricane strength.
Strongest within 50 miles
September 25, 1941
Unnamed storm, Tropical storm
18.4 miles at closest approach, winds near 40 mph.
Most recent
October 26, 2019
Olga, Post-tropical
16.8 miles at closest approach.
Every storm within 100 miles
- 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: 69 days
Heavy smoke on 9 days in 2021, the most of any year.
Last 10 years
21.9 days a year
Medium or heavy smoke, 2016 to 2025.
2025
14 days
Medium or heavy smoke. 41 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
484 federal flood insurance claims since 1978, with $4.4 million paid.
Most claims in one year
2011: 99 claims
$1.1 million paid.
2nd most
1993: 38 claims
$484,000 paid.
3rd most
2001: 35 claims
$166,000 paid.
Claims by ZIP code
| 63801 | 246 | $1.6 million |
| 63742 | 98 | $848,000 |
| 63780 | 95 | $1.6 million |
| 63784 | 9 | $29,000 |
| 63740 | 9 | $20,000 |
| 6 | $20,000 | |
| 63771 | 5 | $112,000 |
Flood events since 1996
- Flood59
- Flash Flood22
- Heavy Rain16
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.
Drought
In severe drought or worse for 135 of 1,581 months since 1895 (9%); the longest spell lasted 18 months.
135
Months in severe drought or worse since 1895
44
Months in extreme drought
9%
Share of all months, severe or worse
40
Drought reports to the Weather Service since 1996
Lowest reading
July 1941
−5.39, extreme drought
Longest severe spell
18 months
July 1930 to December 1931.
Latest month
September 2026
−2.52, moderate drought
Last severe month: May 2026.
- 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 landslides
27 earthquakes of magnitude 4 or more within 50 miles since 1900; the largest was magnitude 4.8 in 1990.
5
Magnitude 2.5+ inside the county since 1973
107
Magnitude 3+ within 50 miles since 1973
27
Magnitude 4+ within 50 miles since 1900
0
Magnitude 5+ within 50 miles since 1900
Largest within 50 miles
September 26, 1990
Magnitude 4.8
4 km SE of Chaffee, Missouri; inside the county, 0.6 miles deep.
Most recent, magnitude 3 or more
September 5, 2025
Magnitude 3.1
4 km S of Puxico, Missouri; 24.4 miles away.
Every earthquake of magnitude 4 or more within 50 miles
| Nov 17, 2021 | 4.0 | 43.5 |
| Jun 2, 2005 | 4.0 | 49.8 |
| Jun 6, 2003 | 4.0 | 19.7 |
| Feb 5, 1994 | 4.2 | 17.0 |
| May 3, 1991 | 4.5 | 21.0 |
| Sep 26, 1990 | 4.8 | Inside |
| Sep 28, 1987 | 4.3 | 9.4 |
| Jun 13, 1987 | 4.1 | 19.7 |
| Jun 13, 1975 | 4.3 | 22.1 |
| May 13, 1974 | 4.3 | 13.1 |
| Jan 7, 1974 | 4.1 | 46.8 |
| Jul 21, 1967 | 4.0 | 42.9 |
| Mar 3, 1963 | 4.7 | 24.9 |
| Feb 2, 1962 | 4.2 | 34.2 |
| Nov 25, 1956 | 4.3 | 35.2 |
| Aug 19, 1934 | 4.7 | 7.5 |
| Mar 22, 1922 | 4.6 | 10.8 |
| Mar 22, 1922 | 4.8 | 10.8 |
| Dec 7, 1915 | 4.6 | 23.8 |
| Oct 23, 1909 | 4.5 | Inside |
| Oct 27, 1908 | 4.0 | 6.3 |
| Sep 28, 1908 | 4.0 | 18.6 |
| Aug 21, 1905 | 4.6 | 22.7 |
| Nov 27, 1903 | 4.3 | 25.6 |
| Nov 4, 1903 | 4.7 | 19.6 |
| Nov 4, 1903 | 4.6 | 25.6 |
| Feb 8, 1903 | 4.4 | 35.6 |
- 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.
Mapped landslides
4
Landslides mapped, probable or better
0
With a recorded date
1
Source inventory
Mapped by MO DNR (4).
- Landslides mapped in the USGS compilation of landslide inventories across the United States (version 3.0, 2025), rated probable or better. The compilation joins inventories made by federal and state agencies for different purposes and areas, so the number mapped in a county reflects how closely it has been surveyed as much as how often its slopes fail. An area with few records may simply not have been mapped. Deaths are as recorded in the inventories; a slide listed in two inventories is counted once.
USGS Landslide Inventories across the United States, version 3.0, retrieved October 27, 2026.
Severe weather and other events
963 events in the National Weather Service record, 888 of them since 1996.
61
Hail reports, 1 inch or larger
5
Hail, 2 inches or larger
134
Damaging gusts, 58 mph+
106
Winter weather events since 1996
96
Heat events since 1996
67
Cold events since 1996
Largest hail
May 23, 2000
2.75 inches
Strongest measured or estimated gust
January 29, 2013
120 mph
More event types since 1996
| Lightning | 4 | 0 |
| Dense fog and smoke | 119 | 0 |
Costliest events since 1996
- Jan 26, 2009Winter Storm, Scott$21.7 million
National Weather Service narrative
This prolonged, major winter storm was termed the worst in decades for southeast Missouri. The storm dumped 6 to 10 inches of sleet and snow along and north of a line from Van Buren through Greenville to Cape Girardeau. This resulted in very difficult driving conditions along with at least two dozen roof collapses. South of that line, at least one inch of ice accumulated. Locally 1.5 to 2 inches of ice accumulated south of a line from Poplar Bluff to Dexter to Benton. This resulted in catastrophic damage to trees, power lines, and utility poles in places such as Dexter, Sikeston, Charleston, and New Madrid. A utility company serving much of the region reported this was the most…
- May 16, 2025Tornado$15.0 million
National Weather Service narrative
A 16 mile long EF3 tornado started in eastern Stoddard County along County Highway Y, tracking eastward into Scott County. As it crossed Highway 61, it damaged approximately 10 power poles. The worst damage was found in the Sloanville Drive area where numerous homes were heavily damaged or completely destroyed, this included a brick home and several mobile homes. Two fatalities occurred along this|road. Numerous more homes were either significantly damaged or completely destroyed west of I-55 in Sandywoods, with the tornado continuing east to Woodhaven Estates. Dozens of trees were snapped or uprooted. Many outbuildings suffered some degree of damage or were a complete loss. Max…
- Sep 14, 2008High Wind, Scott$8.4 million
National Weather Service narrative
Frequent wind gusts from 60 to 75 mph caused widespread damage in parts of southeast Missouri. The low pressure center that was the remnant of Hurricane Ike raced northeast at 40 to 50 mph across Missouri and Illinois. The center passed between Carbondale and St. Louis on its way toward the northeastern states. The rapid speed of the low pressure system contributed to this high wind event.||Extensive tree damage occurred. A very large number of trees were uprooted, and large limbs were broken. Some trees fell on homes, businesses, and public buildings. Downed trees and limbs landed on many vehicles. Numerous streets and highways were blocked. More than half the streets in some…
- May 1, 2011Flood$1.5 million
National Weather Service narrative
Major flooding continued from April on the Mississippi River. At the Thebes, Illinois river gage, the flood crest of 45.52 feet on the night of May 2 was the second highest crest on record. The record crest was 45.91 feet in May of 1995. The activation of the New Madrid Floodway by the U.S. Army Corps of Engineers spared the county from an even higher crest. With the detonation of the Mississippi River levee at Birds Point, Missouri, the river dropped suddenly. A combination of Mississippi River backwater and headwaters from the Whitewater River caused flooding as far inland as Chaffee. In Chaffee, a nursing home was sandbagged after its parking lot flooded. Many homes and other…
- May 26, 2024Tornado$1.4 million
National Weather Service narrative
An EF-3 tornado (max EF-2 for this second Scott County portion) formed in Stoddard County, then tracked northeastward through New Madrid County into Scott County at Butler St in southwest Sikeston, then crossing back briefly into New Madrid County, re-entering Scott County near the intersection of Montgomery St and W Murray Ln. The tornado did extensive and severe tree damage through the south side of Sikeston. Approaching and crossing Malone Ave, the tornado removed part of the roof of a school building and a nearby former farm supply store, where cinder block walls also collapsed. North of Malone Ave, the tornado collapsed a tall wooden light pole at a ball field, and removed…
- Nov 17, 2013Tornado$1.0 million
National Weather Service narrative
Two stick built homes were destroyed. One of these homes had complete roof loss, as well as most exterior walls and some interior walls blown out. A vehicle was blown out of the garage. The other home had a large portion of the roof blown off and some exterior walls blown out. Three empty railroad cars were overturned. A 60 by 80 foot building was blown away. Three mobile homes were completely destroyed. Numerous other mobile homes sustained moderate to major damage. Several irrigation systems were blown around. Many dozens of large or very large trees were snapped. Nine power poles were snapped. The tornado was videotaped as it crossed parts of the county. Peak winds were…
- Mar 14, 2025Tornado$1.0 million
National Weather Service narrative
An EF-2 tornado began east of Bell City in Stoddard County and quickly moved into Scott County. The worst damage was shortly after it entered the county along Highway 91, where it destroyed a barn, flipped a center pivot, and snapped several wooden power pole. The tornado continued northeast through mostly open fields, damaging grain silos and outbuildings, and dissipated just west of Oran. The estimated peak wind was 115 mph. The total path length was 6.4 miles.
- Mar 18, 2008Flood$675,000
National Weather Service narrative
Northern portions of the county received the most rain and the worst flooding. Main Street and numerous side streets were closed in Scott City. In Scott City, a mudslide forced the closure of Route AB. In Chaffee, 48 residents were evacuated from a nursing home. Much of Chaffee was under water, flooding a car wash and a church. Across the county, at least 38 homes and businesses sustained at least some damage. Sandbagging was done around a house threatened by floodwaters on Route EE. Water spilled over the top of a levee on Caney Creek, flooding farmland. One bridge was damaged beyond repair. Another bridge approach was washed out. At least a dozen mudslides were cleared from…
- Jun 4, 2012Thunderstorm Wind$600,000
National Weather Service narrative
A total of 52 homes were damaged. The damage was mostly minor to moderate roof damage. Several businesses and a church were damaged. Numerous outbuildings were damaged. Several power poles were snapped. Dozens of trees were uprooted or snapped. An irrigation system was toppled. The path length was 3.5 miles and the path width was one-half mile. These downburst winds of up to 100 mph were on the right side of a small EF-2 tornado that struck Diehlstadt directly.
- Jan 1, 2016Flood$500,000
National Weather Service narrative
Mississippi River levels continued their climb from December, and record flooding occurred early in the month. At the Thebes, Illinois river gage, the river crested at a new record of 47.74 feet before dawn on the 2nd. The old record was 45.91 feet, which was set in May of 1995. Records at Thebes go back to at least 1844. The 2016 crest would have been higher if a major levee break had not occurred between Thebes and Cairo, Illinois. Flood stage at Thebes is 33 feet. Thousands of acres of unprotected land outside the levee system were flooded, most of which was cropland. The small community of Commerce, which is not protected by a levee, was severely flooded. Only about nine homes…
- 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 Cape Girardeau Municipal Airport, 14.5 miles from the county’s population centre, with records from 1960.
- All-time high
- 107°FJun 29, 2012
- All-time low
- −18°FJan 11, 1977
- Warmest night
- 81°F2 times, most recently Jun 13, 2022
- Coldest day
- 2°FJan 20, 1985
- Wettest day
- 11.49 inMar 18, 2008
- Snowiest day
- 24.0 inFeb 25, 1979
- Hottest year
- 2024mean 60.5°F
- Coldest year
- 1979mean 55.2°F
- Wettest year
- 201174.39 in
- Driest year
- 201227.00 in
Station Cape Girardeau Municipal Airport (USW00003935), 334 ft elevation, 14.5 miles from the population centre. Daily records from 1960 to October 17, 2026; 98.7% 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
31 since 1953. The most recent: Severe Storms, Straight-Line Winds, Tornadoes, and Flooding, August 3, 2026.
| Aug 3, 2026 | Severe Storm | DR-4929-MO |
| Jun 9, 2025 | Severe Storm | DR-4877-MO |
| May 21, 2025 | Severe Storm | DR-4872-MO |
| May 21, 2025 | Severe Storm | DR-4867-MO |
| Jul 23, 2024 | Severe Storm | DR-4803-MO |
| Sep 21, 2023 | Severe Storm | DR-4741-MO |
| Mar 26, 2020 | Biological | DR-4490-MO |
| Mar 13, 2020 | Biological | EM-3482-MO |
| Jul 9, 2019 | Severe Storm | DR-4451-MO |
| May 20, 2019 | Flood | DR-4435-MO |
| Jun 2, 2017 | Flood | DR-4317-MO |
| Jan 21, 2016 | Flood | DR-4250-MO |
| Jan 2, 2016 | Flood | EM-3374-MO |
| May 9, 2011 | Severe Storm | DR-1980-MO |
| Feb 3, 2011 | Severe Storm | EM-3317-MO |
| Feb 17, 2009 | Severe Storm | DR-1822-MO |
| Jan 30, 2009 | Severe Ice Storm | EM-3303-MO |
| Nov 13, 2008 | Severe Storm | DR-1809-MO |
| Jun 25, 2008 | Severe Storm | DR-1773-MO |
| Mar 19, 2008 | Severe Storm | DR-1749-MO |
| Mar 12, 2008 | Severe Ice Storm | DR-1748-MO |
| Dec 12, 2007 | Severe Ice Storm | EM-3281-MO |
| Mar 16, 2006 | Severe Storm | DR-1631-MO |
| Sep 10, 2005 | Hurricane | EM-3232-MO |
| May 6, 2003 | Severe Storm | DR-1463-MO |
| May 6, 2002 | Severe Storm | DR-1412-MO |
| Jun 2, 1995 | Severe Storm | DR-1054-MO |
| Jul 9, 1993 | Flood | DR-995-MO |
| Apr 21, 1979 | Tornado | DR-579-MO |
| Sep 24, 1976 | Drought | EM-3017-MO |
| Apr 19, 1973 | Severe Storm | DR-372-MO |
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 Scott County stands among 115 counties in Missouri and 3,143 in the United States.
| Tornadoes since 1950 | 49 | 8 / 115 |
| Tornadoes rated F3/EF3 or stronger | 3 | 27 / 115 |
| Tropical cyclones within 50 mi | 1 | 19 / 115 |
| Hurricane-strength passes within 50 mi | 0 | — |
| Wildfire acres since 1984 | 0 | — |
| Flood insurance claims | 484 | 16 / 115 |
| Flood insurance paid | $4.4 million | 32 / 115 |
| Disaster declarations | 31 | 5 / 115 |
| Flood events since 1996 | 97 | 46 / 115 |
| Hail and wind events since 1996 | 322 | 37 / 115 |
| Winter storm events since 1996 | 106 | 8 / 115 |
| Reported damage since 1996 | $57.3 million | 28 / 115 |
| River crests at major flood stage | 0 | — |
| High tide flooding days a year, last 10 years | 0.0 | — |
| Months in severe drought since 1895 | 135 | 35 / 115 |
| Medium or heavy smoke days a year, last 10 years | 21.9 | 54 / 115 |
| Earthquakes M4+ within 50 mi since 1900 | 27 | 6 / 115 |
| Earthquakes M2.5+ in the county since 1973 | 5 | 15 / 115 |
Neighbouring counties
| Alexander County IL | 18 | 1 |
| Cape Girardeau County | 52 | 1 |
| Mississippi County | 27 | 1 |
| New Madrid County | 38 | 2 |
| Stoddard County | 50 | 1 |
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 USW00003935.
- 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.
- Landslides USGS Landslide Inventories across the United States, version 3.0 (2025).
- 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.