Los Alamos County, New Mexico severe weather history spans 58 recorded events between 1961 and 2025. The dominant hazard is hail, accounting for 63.8% of all recorded events. It ranks #3,024 nationally and #32 in New Mexico.
58
Recorded events
0
Direct deaths
0
Direct injuries
$1.5B
Property damage
The record
What the Los Alamos County, New Mexico severe weather history record shows
Across the archive, Los Alamos County, New Mexico severe weather history averages 0.9 recorded events a year. The busiest stretch on record is the 2010s, with 21 events logged in that decade alone. Roughly 7 events fall before 1990 and 51 from 1990 onward — a gap that reflects the expansion of NOAA reporting practice as much as the weather itself.
The costliest is wildfire, with $1.5B in reported property damage. In total, 7 distinct hazard types appear in this county archive, each listed with its own dated record below.
By hazard type
Every hazard type recorded in Los Alamos County
| Hazard | Events | Deaths | Damage | Max | Span |
|---|---|---|---|---|---|
| Hail | 37 | 0 | $110K | 2 | 1961–2025 |
| Flash Flood | 13 | 0 | $9.7M | 0 | 2000–2013 |
| Thunderstorm Wind | 4 | 0 | $0 | 58 | 1977–2024 |
| Lightning | 1 | 0 | $0 | 0 | 2016–2016 |
| Funnel Cloud | 1 | 0 | $0 | 0 | 2013–2013 |
| Dust Devil | 1 | 0 | $30K | 0 | 2013–2013 |
| Wildfire | 1 | 0 | $1.5B | 0 | 2000–2000 |
Decade by decade
Los Alamos County, New Mexico severe weather history by decade
Reporting practice changed over time — early decades are undercounted, not calmer.
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Brief heavy rain and strong runoff caused more damage to North Road in Los Alamos where recent drainage upgrades and repairs were washed away. North Road continues to suffer damage with such rapid and high runoff from the burned areas of Pueblo Canyon which have not recovered from last years Cerro Grande fire storm.
KOB-TV reported from the Los Alamos Monitor Newspaper that multiple aircraft at the Los Alamos Airport were damaged. A thin metal surface on numerous planes was dinged and dented due to large hail. The Airport Manager was reported as saying up to 18 planes were damaged.
Newspaper report with images of significant hail damage to a mobile home in Los Alamos. Home owners reported hail was ping pong ball sized. Location is estimated from article giving home address. Time is estimated, based on radar imagery and other hail reports in the area. All images attached to this event are courtesy of the Los Alamos Daily Post newspaper.
Context
Risk, population and federal disasters
Very Low
FEMA NRI risk rating
19,435
Population (ACS)
$496K
Median home value
10
Federal declarations
| Declared | Incident | Title | Type |
|---|---|---|---|
| May 4, 2022 | Fire | WILDFIRES, STRAIGHT-LINE WINDS, FLOODING, MUDFLOWS, AND DEBRIS FLOWS | DR |
| Apr 5, 2020 | Biological | COVID-19 PANDEMIC | DR |
| Mar 13, 2020 | Biological | COVID-19 | EM |
| Oct 29, 2013 | Flood | SEVERE STORMS, FLOODING, AND MUDSLIDES | DR |
| Aug 24, 2012 | Flood | FLOODING | DR |
| Nov 23, 2011 | Flood | FLOODING | DR |
Quick answers
Frequently asked
How many severe weather events have been recorded in Los Alamos County, New Mexico?
58 events are on record between 1961 and 2025, causing 0 direct deaths and $1.5B in property damage.
What is the most common severe weather hazard in Los Alamos County?
Hail, with 37 recorded events — 63.8% of everything in the archive for this county.
How many federal disaster declarations cover Los Alamos County?
10 federal disaster declarations from FEMA include Los Alamos County, each tied to a specific incident period.
How risky is Los Alamos County compared with the rest of the country?
FEMA's National Risk Index rates Los Alamos County as very low risk, placing it in the 4 percentile of its state for expected annual loss.
Where does the Los Alamos County, New Mexico severe weather history data come from?
Every figure is drawn from United States federal public-domain records: NOAA/NCEI Storm Events for the event archive, NOAA SPC SVRGIS for mapped tornado paths, FEMA for disaster declarations and risk ratings, and the U.S. Census for population context. Dates are shown in UTC and recent entries may still be revised by NOAA.
Nearby
Neighbouring counties
- Lincoln County 344
- Luna County 123
- Lea County 991
- McKinley County 117
- Hidalgo County 68
- Mora County 214
Cite this page
“Los Alamos County, New Mexico.” Severe Weather History. severeweatherhistory.com/county/new-mexico/los-alamos-county/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.