Greenlee County

Every large fire

1. Large fires mapped by the Monitoring Trends in Burn Severity program since 1984: 1,000 acres or more in the West, 500 or more in the East. Prescribed burns are excluded. Acres here are the part of each perimeter inside this place.

Monitoring Trends in Burn Severity (USGS and U.S. Forest Service), 1984 to 2026.

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.

Volcanoes within 100 miles

1. U.S. volcanoes within 100 miles, from the USGS Volcano Hazards Program. The threat category is the USGS 2018 National Volcanic Threat Assessment, which ranks volcanoes by how hazardous their past eruptions were and how many people and how much infrastructure lie near them. It is not a forecast of eruption.

USGS Volcano Hazards Program, retrieved October 30, 2026.

Mapped landslides

Mapped by AZ GS (16), NASA (2), USGS Post-Fire Debris Flows (2).

1. 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.

More event types since 1996

Costliest events since 1996

1. Feb 2, 2011Frost/Freeze, Upper Gila River And Aravaipa Valleys$300,000
   National Weather Service narrative

   Temperatures dropped into the single digits across the Gila River Vally with wind chills dropping as low as -10 degrees. As a result, a water main line broke at Fifth Avenue and Second Street. More than 100 calls were received by Safford Utility in response to frozen pipes that later turned to broken pipes. Safford Fire Department responded to more than a dozen calls for malfunctioning sprinkler systems. Some businesses that received minor water damage were the Arizona Credit Union, the Veterans Administration Office and Thriftee Supermarket. ||In Thatcher, the Fire Department responded to the Thatcher school where sprinkler systems and backflow preventers in several buildings…

2. Aug 22, 2022Flood$250,000
   National Weather Service narrative

   Heavy rain upstream in New Mexico caused the Gila River to flood at Duncan, AZ. Floodwaters caused the closure of Highway 70 and the temporary evacuation of a number of residents. Several homes and a couple businesses experienced minor flooding. The bakery near the corner of Highway 70 and Hill St. sustained the most significant damage from floodwaters. Levees between the river and the highway were damaged by the floodwaters.

3. Aug 6, 2002Flash Flood$100,000
   National Weather Service narrative

   Over a four day period, thunderstorms developed over the Duncan causing two washes to overflow on the evening of the 7th. More than four inches of rain was recorded from a rain gage a few miles north of Duncan over the four day period. Officials reported that rainfall from the four day period caused Railroad wash to overflow a bridge on Highway 70 which closed the road for a couple of hours. The Packer was in the Hunter Estates area was also washed out but was repaired and passable. A particular area of flash flooding near Lordsburg Flats caused a house to be flooded with 3 inches of mud. No injuries were reported.

4. Sep 14, 2013Flood$50,000
   National Weather Service narrative

   During the evening of September 13th, heavy rain occurred along the Campbell Blue Creek near the headwaters of the Blue River in Arizona, which was an area that was affected by the 2011 Wallow Fire. Heavy rain also fell along Turkey Creek in Arizona and the Dry Blue Creek in New Mexico. Runoff continued downstream to the confluence of the Campbell Blue and Dry Blue Creeks, which forms the Blue River. In addition, heavy rain occurred during the evening of the 14th in Arizona and New Mexico, swelling the tributaries of the Blue River upstream of the community of Blue, Arizona. Multiple crests in the Blue River two to four feet above flood stage resulted. Sections of Blue River Road…

5. Sep 22, 2010Flash Flood$50,000
   National Weather Service narrative

   Thunderstorms developed over Clifton around 4:30 pm and intense rainfall resulted. According to Clifton officials, 2.25 inches fell in about 45 minutes, on already saturated soil. The storm resulted in tons of mud and rock piled on city streets. Two unoccupied vehicles parked on Turner Avenue were washed down Ward's Canyon and into the San Francisco River. A third vehicle was tossed onto its side in the canyon about 100 yards from the canyon's confluence with the river. Flash flooding also resulted in damage to a main water line feeding Clifton.

6. Jul 24, 2022Flash Flood$50,000
   National Weather Service narrative

   Heavy rain of 2 in 1 hour in the Clifton-Morenci area resulted in flash flooding and mud flows along Chase Creek which flooded Coronado Blvd. before flowing into the San Francisco River.

7. Jul 1, 2011Wildfire, White Mountains Of Graham And Greenlee Counties$50,000
   National Weather Service narrative

   The Wallow Fire saw very little spread during the beginning of July thanks to very beneficial moisture. The fire was officially contained on July 8, 2011 at 1800 MST. A total of 538,049 acres were charred with around 100,000 acres charred in northern Greenlee County. Most of the structure damage and injuries were sustained north of Tucson's warning area, however, a few outbuildings were destroyed in Greenlee County. Crews stayed on scene throughout the much to monitor hot spots and work to mitigate the flash flood concerns due to the burn scar.

8. Jul 1, 2021Wildfire, Upper Gila River And Aravaipa Valleys$50,000
   National Weather Service narrative

   The lightning caused Bottom Fire started June 28 in the Gila River Valley on San Carlos Apache tribal lands within Graham County. The fire quickly grew to around 3000 acres by the end of the month due to daily bouts of gusty thunderstorm outflow winds. Nearly daily rounds of thunderstorm winds continued during the first week of July causing the fire to grow to 6004 acres before it was fully contained July 10. Three structures in Calva were temporarily evacuated on July 6 when strong winds caused the fire to break containment lines. Highway 70 was closed for a time and a nearby Eastern Arizona railroad trestle was damaged. Fire suppression costs tallied $1.4 million.

9. Jul 12, 2002Thunderstorm Wind$40,000
   National Weather Service narrative

   A severe thunderstorm developed and moved over the town of Duncan. At 5:25 pm MST, spotters reported shingles being blown off roofs and roofs being blown off of two houses.

10. Jul 26, 2006Flash Flood$30,000
    National Weather Service narrative

    A county official reported that Ward Canyon and Limestone Canyon had several feet of water flow through them between 2245 MST and 2300 MST. Limestone Canyon had an area of significant road damage.

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

113°F2 times, most recently Jul 30, 2020

All-time low

−2°F3 times, most recently Feb 3, 2011

Warmest night

80°F4 times, most recently Jun 17, 2026

Coldest day

27°F2 times, most recently Dec 23, 1990

Wettest day

3.18 inAug 1, 2014

Snowiest day

15.0 inJan 16, 1949

Hottest year

2025mean 63.8°F

Coldest year

1976mean 57.0°F

Wettest year

190519.74 in

Driest year

19563.49 in

Station Duncan (USC00022754), 3,660 ft elevation, 18.2 miles from the population centre. Daily records from 1901 to October 5, 2026; 95.1% 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 USC00022754.
• 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.
• Volcanoes USGS Volcano Hazards Program, U.S. volcanoes and 2018 threat assessment.
• 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.