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Los Alamos County weather alerts
No active National Weather Service alerts for Los Alamos County, New Mexico right now. The most recent was a Flood Advisory that ended Sep 30, 5:15 PM.
16 in the last 30 days 30 in 12 months (since Aug 30) most common: Flood Watch Get alerts on your phone →
Active alerts for Los Alamos County
Refreshed every few minutes; times in MDT.
All clear in Los Alamos County
No warnings, watches or advisories are in effect. See what is active across the country, or check a neighbouring county below.
Get Los Alamos County alerts on your phone before you think to look them up
Forecast Bar watches the official alert feeds around the clock, NWS in the United States and Environment Canada in Canada, and pushes every warning, watch and advisory for your saved locations the moment it is issued. This page is the same data, a few minutes later.
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Where
Los Alamos County on the map
Alert polygons are NWS's own. Forecast Bar's radar shows the same warnings over live precipitation, with future radar and lightning. See the radar.
Last 30 days
Recent alerts for Los Alamos County
| Alert | Issued | Ended | Issued by |
|---|---|---|---|
| Flood Advisory | Sep 30, 3:18 PM | Sep 30, 5:15 PM | Albuquerque NM |
| Flood Watch | Sep 30, 12:41 PM | Oct 1, 12:00 AM | Albuquerque NM |
| Flood Watch | Sep 30, 5:43 AM | Oct 1, 12:00 AM | Albuquerque NM |
| Flood Watch | Sep 29, 11:41 PM | Oct 1, 12:00 AM | Albuquerque NM |
| Flood Watch | Sep 29, 8:24 PM | Oct 1, 12:00 AM | Albuquerque NM |
| Flood Watch | Sep 29, 12:28 PM | Oct 1, 12:00 AM | Albuquerque NM |
| Flood Watch | Sep 29, 9:33 AM | Sep 30, 6:00 AM | Albuquerque NM |
| Flood Watch | Sep 28, 10:47 PM | Sep 30, 6:00 AM | Albuquerque NM |
| Flood Watch | Sep 28, 11:22 AM | Sep 30, 6:00 AM | Albuquerque NM |
| Flood Watch | Sep 27, 10:29 PM | Sep 30, 6:00 AM | Albuquerque NM |
| Flood Watch | Sep 27, 12:07 PM | Sep 30, 6:00 AM | Albuquerque NM |
| Flood Watch | Sep 27, 11:59 AM | Sep 30, 6:00 AM | Albuquerque NM |
| Flood Watch | Sep 27, 1:39 AM | Sep 30, 6:00 AM | Albuquerque NM |
| Flood Watch | Sep 23, 1:03 PM | Sep 24, 6:00 AM | Albuquerque NM |
| Flood Watch | Sep 23, 2:00 AM | Sep 24, 6:00 AM | Albuquerque NM |
| Flood Watch | Sep 22, 11:57 AM | Sep 24, 6:00 AM | Albuquerque NM |
Pattern
What Los Alamos County gets alerted for
Every alert that named Los Alamos County in the last 12 months, by type. Records begin August 30, 2026, so this fills in over the year.
Plain English
What these alerts mean
A warning means the hazard is happening or about to; a watch means conditions favour it; an advisory is a lesser hazard still worth planning around.
Minor flooding of streets, streams or low-lying areas is expected. Expect ponding on roads and use caution when driving.
Conditions are favourable for flooding. Have a plan in case a warning is issued.
A heads-up about conditions that do not meet warning or advisory criteria but still deserve attention, such as a strong storm, patchy fog or a brief burst of snow.
Nearby
Alerts near Los Alamos County
Neighbouring counties in New Mexico
Questions
About Los Alamos County alerts
How do I get Los Alamos County weather alerts on my iPhone?
Install Forecast Bar, add Los Alamos County as a location, and turn on severe weather alerts. Every NWS warning, watch and advisory for Los Alamos County then arrives as a push notification at the moment of issue, with Critical Alerts available for the most dangerous warnings. Forecast Bar also runs on iPad, Apple Watch, Mac and Apple TV.
Where do these alerts come from?
From the National Weather Service alert feed (api.weather.gov). NWS issues alerts by county and by forecast zone; this page lists every product that names Los Alamos County. Forecast Bar checks the feed continuously and this page refreshes within a few minutes of a change.
What is the difference between a watch, a warning and an advisory?
A warning means the hazard is occurring, imminent or very likely: act now. A watch means conditions are favourable for it to develop: prepare and stay informed. An advisory covers a hazard that is less serious than a warning but can still cause real inconvenience or danger if you are not ready for it.
Can I get this data as JSON?
Yes. /weather-alerts/nm/los-alamos-county.json returns the active alerts, the last 30 days and the 12-month counts for Los Alamos County, refreshed every minute. Please cache responses and credit National Weather Service as the source.
Never find out about a Los Alamos County alert from this page again
Add Los Alamos County in Forecast Bar and every NWS warning, watch and advisory arrives as a push notification the moment it is issued, on iPhone, iPad, Apple Watch, Mac and Apple TV.
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