La Paz County
Population 16,711 (2025) 4,497 sq mi
Large wildfires have burned 24,538 acres of La Paz County since 1984, 15th most of 15 counties in Arizona; the largest was the Harcuvar Fire in 1999.
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 19501
- Tropical cyclone tracks within 100 miles since 1851, wider where stronger1
- Wildfire burn scars since 19849
- Major flood years since 19781
At a glance
The record for La Paz County in eight numbers. Each links to its section below.
Acres burned since 1984
24,538
15th of 15 in Arizona
9 large fires; the largest was Harcuvar, 1999
DetailsTornadoes since 1950
1
12th of 15 in Arizona
Fewer than the typical Arizona county, which has had 18
DetailsStrongest tornado
EF0
October 13, 2018, 0.0 mile path
Strongest tropical cyclone
TS
Tropical storm Nora, 1997, 4.5 miles away
Tornadoes
About one every 76 years since 1950, none rated F3/EF3 or stronger.
Strongest
October 13, 2018
EF0, 0.0 mile path
50 yards wide.
Most recent
Saturday, October 13, 2018
EF0, 0.0 mile path
8 years ago.
Every recorded tornado
| Oct 13, 2018 | EF0 | 0.0 | 0 | 0 |
- Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within La Paz 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
1 passed within 50 miles since 1851; none at hurricane strength.
Strongest within 50 miles
September 25, 1997
Nora, Tropical storm
4.5 miles at closest approach, winds near 44 mph.
Most recent
September 25, 1997
Nora, Tropical storm
4.5 miles at closest approach.
Every storm within 100 miles
| Nora | 1997 | 4.5 | 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
24,538 acres burned in 9 large fires since 1984, equal to 0.9% of the land.
Largest
May 27, 1999
Harcuvar Fire, 16,310 acres
12,082 acres inside La Paz County.
Most recent
May 26, 2022
Lost Lake Fire
5,456 acres in total.
Every large fire
| Lost Lake | 2022 | 187 | 5,456 |
| Clip | 2021 | 675 | 1,301 |
| Planet Ranch | 2021 | 498 | 1,253 |
| Island Lake | 2013 | 1,403 | 2,017 |
| Three Slashes | 2011 | 2,469 | 4,584 |
| Cibola | 2006 | 3,129 | 4,709 |
| Bosque | 2005 | 3,381 | 3,384 |
| Harcuvar | 1999 | 12,082 | 16,310 |
| Lost Lake | 1995 | 709 | 2,853 |
- 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
Smokiest year
2021: 22 days
Heavy smoke on 10 days in 2020, the most of any year.
Last 10 years
5.9 days a year
Medium or heavy smoke, 2016 to 2025.
2025
3 days
Medium or heavy smoke.
- 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
113 federal flood insurance claims since 1978, with $1.1 million paid.
Most claims in one year
1983: 71 claims
$814,000 paid.
2nd most
1984: 7 claims
$0 paid.
3rd most
1986: 5 claims
$72,000 paid.
Claims by ZIP code
| 85344 | 86 | $663,000 |
| 16 | $278,000 |
Flood events since 1996
- Flash Flood126
- Heavy Rain10
- Flood8
2 deaths recorded in flood events since 1996.
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
October 22, 2000
Centennial Wash near Wenden, 7.82 ft
3.82 feet above the 4.0 ft flood stage; major flooding by today’s categories.
Most recent moderate or major crest
September 9, 2014
Centennial Wash near Wenden, 7.02 ft
Major flooding.
| Oct 22, 2000 | Centennial Wash near Wenden | 7.82 | +3.82 |
| Sep 9, 2014 | Centennial Wash near Wenden | 7.02 | +3.02 |
| Jan 22, 2010 | Centennial Wash near Wenden | 6.85 | +2.85 |
| Aug 25, 2008 | Centennial Wash near Wenden | 4.68 | +0.68 |
| Aug 25, 2013 | Centennial Wash near Wenden | 4.52 | +0.52 |
| Aug 30, 2000 | Centennial Wash near Wenden | 3.92 | −0.08 |
| Oct 22, 2004 | Centennial Wash near Wenden | 3.50 | −0.50 |
| Jul 14, 2012 | Centennial Wash near Wenden | 3.50 | −0.50 |
| Aug 13, 2006 | Centennial Wash near Wenden | 3.40 | −0.60 |
| Feb 7, 1937 | Bill Williams River at Alamo Lake | 46.00 | −1,189.00 |
| Sep 6, 1939 | Bill Williams River at Alamo Lake | 39.60 | −1,195.40 |
| Aug 29, 1951 | Bill Williams River at Alamo Lake | 30.80 | −1,204.20 |
| Mar 14, 1941 | Bill Williams River at Alamo Lake | 23.00 | −1,212.00 |
| Mar 2, 1941 | Bill Williams River at Alamo Lake | 22.50 | −1,212.50 |
River gauges
| Bill Williams River at Alamo Lake | 1,235.0 | 46.00 ft | 0 |
| Bouse Wash at Bouse | 3.5 | — | 0 |
| Centennial Wash near Wenden | 4.0 | 7.82 ft | 3 |
| Tyson Wash at Quartzsite | 10.0 | — | 0 |
- 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.
Drought
In severe drought or worse for 158 of 1,581 months since 1895 (10%); the longest spell lasted 20 months.
158
Months in severe drought or worse since 1895
26
Months in extreme drought
10%
Share of all months, severe or worse
Lowest reading
August 2002
−4.70, extreme drought
Longest severe spell
20 months
January 1996 to August 1997.
Latest month
September 2026
−3.90, severe drought
- 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, volcanoes and landslides
115 earthquakes of magnitude 4 or more within 50 miles since 1900; the largest was magnitude 6.9 in 1940.
7
Magnitude 2.5+ inside the county since 1973
605
Magnitude 3+ within 50 miles since 1973
115
Magnitude 4+ within 50 miles since 1900
21
Magnitude 5+ within 50 miles since 1900
Largest within 50 miles
May 18, 1940
The 1940 Imperial Valley, California Earthquake; 42.6 miles away, 3.7 miles deep.
Most recent, magnitude 3 or more
July 23, 2026
Magnitude 3.2
7 km S of Brawley, CA; 48.8 miles away.
Every earthquake of magnitude 4 or more within 50 miles
- 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.
Volcanoes within 100 miles
| Salton Buttes | 51.9 | High |
- 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
26
Landslides mapped, probable or better
0
With a recorded date
1
Source inventory
Mapped by AZ GS (26).
- 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
391 events in the National Weather Service record, 382 of them since 1996.
5
Hail reports, 1 inch or larger
0
Hail, 2 inches or larger
88
Damaging gusts, 58 mph+
1
Winter weather events since 1996
119
Heat events since 1996
0
Cold events since 1996
Largest hail
August 7, 1997
1.75 inches
Strongest measured or estimated gust
July 8, 2014
86 mph
More event types since 1996
| Lightning | 2 | 0 |
| Dust storms and dust devils | 14 | 0 |
| Avalanches | 1 | 0 |
Costliest events since 1996
- Oct 22, 2000Flash Flood$6.2 million
National Weather Service narrative
In the early morning hours of Sunday October 22, a large low pressure area dumped four to six inches of rain over parts of eastern LaPaz and western Maricopa County. This caused flash flooding in the upper part of the Centennial Wash between the Harcuvar and Harquahala mountain ranges. The heavy runoff flowed into the town of Wenden where water ran over the highway 60 bridge. At its peak the wash was about 3/8ths of a mile wide and 12 feet deep. The resulting high water surged through the town of Wenden with at least 400 residents evacuated. There was extensive damage to the town and for many miles downstream. The reported flow was in excess of 20,000 cfs. When the flood hit…
- Jan 22, 2010Flood$5.0 million
National Weather Service narrative
Flood waters mainly from the Centennial Wash moved through Wenden in the early morning hours. Law enforcement began evacuating people before waters closed the local streets and roads. About 200 people took shelter at a local high school. Flood waters up to 6 feet deep took out power poles, telephone poles, trees, damaged roads and homes. The entire town of Wenden was underwater for several days. Power was restored in most areas within 2 weeks. Generally, about 3 to 5 inches of rain fell in the watershed area during the week of January 18-22.
- Jul 25, 2026Wildfire, Parker Valley$4.3 million
National Weather Service narrative
A wildfire, designated as the Island Fire, broke out a couple of miles south of Cibola, AZ along the Colorado River during the evening hours on the 25th and rapidly grew to over 3000 acres in the subsequent days. The fire impacted the Hart Mine Road Bridge, causing it to collapse into the Colorado River. The bridge is owned by the Bureau of Reclamation and even though it is a remote, low traffic bridge in the Cibola National Wildlife Refuge area, it served as a critical route between Cibola, AZ and California, especially for farmers being able to transport produce and heavy machinery. It also served as a shortcut access to faster southbound highway routes, including towards Yuma,…
- Aug 24, 2022Flash Flood$500,000
National Weather Service narrative
Report from La Paz County Emergency Management of water rushing into houses. Washes in the area were running full. Timing estimated from radar. No injuries were reported.
- Sep 2, 2003Thunderstorm Wind$200,000
National Weather Service narrative
Extensive damage in town due to microburst winds. Power poles were knocked down and trailers were overturned. The Desert Gardens Mobile Home and Car Sales sustained the heaviest damage with several mobile homes destroyed.. Signs along I-10 were blown down, and Arizona highway 95 was closed for a short time.
- Sep 10, 2013Flood$200,000
National Weather Service narrative
Thunderstorms with locally heavy rain decreased across eastern La Paz county during the afternoon hours on September 10th. However, due to the heavy rains that had occurred over the past couple of days, there was still significant flow in the Centennial Wash running though Wenden, affecting communities such as Salome. Local law enforcement indicated that many roads in Wenden were closed due to flow in Centennial Wash, and the stream gage in the wash reported 4 feet of elevation at 1345MST. Given the continued runoff the water level had the potential to rise even further into the afternoon thus increasing the likelihood of additional roads and low lying areas over eastern La Paz…
- Jul 10, 2011Thunderstorm Wind$125,000
National Weather Service narrative
Isolated high based thunderstorms developed across La Paz county during the evening hours on July 10th. The storms produced wind gusts estimated to be in excess of 50 knots. Video footage taken by an amateur photographer showed several power poles being snapped by high winds along highway 95 north of Quartzsite. Video footage indicated that the poles were snapped between mileposts 112 and 113 on highway 95. Additional public reports indicated a total of 17 power poles were blown over or snapped by high winds.
- Jul 10, 2011Thunderstorm Wind$100,000
National Weather Service narrative
Isolated high based thunderstorms developed over La Paz county during the late afternoon and evening hours on July 10th. The storms generated gusty microburst winds, estimated to be in excess of 60 knots. According to Cate's Column in the Parker Live Online paper, significant damage occurred in the community of Bouse. Strong winds lifted the roof off of a house and tossed it down a hill. The winds smashed windows, blew out metal garage doors, plucked coolers from rooftops, flattened several carports, and uprooted a number of Mesquite and Palo Verde trees.
- Aug 1, 2005Flash Flood$100,000
- Sep 9, 2008Thunderstorm Wind$100,000
National Weather Service narrative
Quartzsite Fire Department reported an estimated gust of 75 mph that blew two tractor trailer trucks off the road.
- 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 Parker Rsvr, 23.2 miles from the county’s population centre, with records from 1934.
- All-time high
- 124°FJul 1, 1950
- All-time low
- 21°F2 times, most recently Jan 13, 2013
- Warmest night
- 96°FJul 26, 2026
- Coldest day
- 36°FJan 13, 1963
- Wettest day
- 3.05 inAug 29, 1951
- Snowiest day
- 0.1 inJan 1, 2015
- Hottest year
- 1934mean 78.4°F
- Coldest year
- 2013mean 71.1°F
- Wettest year
- 197813.67 in
- Driest year
- 19560.22 in
Station Parker Rsvr (USC00046699), 738 ft elevation, 23.2 miles from the population centre. Daily records from 1934 to September 30, 2026; 88.2% 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
7 since 1953. The most recent: Covid-19 Pandemic, April 4, 2020.
| Apr 4, 2020 | Biological | DR-4524-AZ |
| Mar 13, 2020 | Biological | EM-3442-AZ |
| Nov 5, 2014 | Flood | DR-4203-AZ |
| Mar 18, 2010 | Severe Storm | DR-1888-AZ |
| Sep 12, 2005 | Hurricane | EM-3241-AZ |
| Oct 27, 2000 | Severe Storm | DR-1347-AZ |
| Jul 1, 1983 | Flood | DR-686-AZ |
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 La Paz County stands among 15 counties in Arizona and 3,143 in the United States.
| Tornadoes since 1950 | 1 | 12 / 15 |
| Tornadoes rated F3/EF3 or stronger | 0 | — |
| Tropical cyclones within 50 mi | 1 | 2 / 15 |
| Hurricane-strength passes within 50 mi | 0 | — |
| Wildfire acres since 1984 | 24,538 | 15 / 15 |
| Flood insurance claims | 113 | 12 / 15 |
| Flood insurance paid | $1.1 million | 10 / 15 |
| Disaster declarations | 7 | 14 / 15 |
| Flood events since 1996 | 144 | 11 / 15 |
| Hail and wind events since 1996 | 100 | 14 / 15 |
| Winter storm events since 1996 | 1 | 14 / 15 |
| Reported damage since 1996 | $19.0 million | 12 / 15 |
| River crests at major flood stage | 3 | 5 / 15 |
| High tide flooding days a year, last 10 years | 0.0 | — |
| Months in severe drought since 1895 | 158 | 14 / 15 |
| Medium or heavy smoke days a year, last 10 years | 5.9 | 10 / 15 |
| Earthquakes M4+ within 50 mi since 1900 | 115 | 2 / 15 |
| Earthquakes M2.5+ in the county since 1973 | 7 | 10 / 15 |
Neighbouring counties
| Imperial County CA | 7 | 2 |
| Maricopa County | 75 | 0 |
| Mohave County | 18 | 0 |
| Riverside County CA | 27 | 1 |
| San Bernardino County CA | 33 | 0 |
| Yavapai County | 29 | 0 |
| Yuma County | 12 | 2 |
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 USC00046699.
- 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.