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Red Flag Warning Issued for Parts of California, Nevada, and Arizona

June 25, 2026 · wweather1 editorial · 2 min read

The National Weather Service (NWS) Las Vegas NV has issued a Red Flag Warning for portions of southeastern California, southern Nevada, and northwestern Arizona. Issued on June 25 at 2:37 AM PDT, the warning is in effect until June 27 at 11:00 PM PDT, with critical fire weather conditions, including strong winds and low humidity, expected from Friday morning through Saturday evening.

The National Weather Service (NWS) Las Vegas NV has issued a high-severity Red Flag Warning for extensive areas across southeastern California, southern Nevada, and northwestern Arizona. This warning, issued on June 25 at 2:37 AM PDT, is effective until June 27 at 11:00 PM PDT, with critical fire weather conditions anticipated from Friday morning through Saturday evening.

Specific areas under the warning include Lake Mead NRA/Colorado River-AZ side, Northwest Deserts/Northwest Plateau, Death Valley National Park, Mojave Desert Including Morongo Valley/Yucca Valley, and the Lower Colorado River Valley. In Nevada, affected regions include Esmeralda and Nye County Deserts/CNC Dispatch, Lincoln County/Ely Dispatch, and Nye County Deserts/Las Vegas Dispatch.

Forecast conditions include southwest winds ranging from 20 to 30 mph, with gusts potentially reaching 40 to 50 mph. Relative humidity levels are predicted to be very low, ranging from 5 to 15 percent.

A Red Flag Warning signifies that critical fire weather conditions are either occurring or are expected to occur shortly. The combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. Any fires that ignite under these conditions are likely to spread rapidly.

Why it is dangerous and what to do

⚠️ Safety
• Avoid all outdoor burning.
• Exercise extreme caution with any potential ignition sources.
• Monitor local weather and fire alerts from official sources.
• Be prepared for rapid fire spread in affected areas.
📊 The numbers, from wweather1 data
Las Vegas: now +39°, Clear.
That is 6° above the June climate norm.
The record for this date is +45° (2017).
Three-day forecast: 25 June: +42°/+28° · 26 June: +39°/+26° · 27 June: +34°/+25°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates.

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📰 Data source: NWS. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.

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