Red flag warning for Northern California from Saturday to Monday
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On Friday at 10:51 a.m. a red flag warning was issued by the NWS Sacramento CA valid from Saturday 5 a.m. until Monday 8 p.m. The warning is for South-Central Shasta County Including Redding Metro, Northern Sacramento Valley in Tehama County, Central Glenn County Including Interstate 5, Eastern Glenn County, Butte County Below 1000 ft, Central Colusa County Including Interstate 5, Eastern Colusa County, Sutter and Yuba counties Below 1000 ft, Western Yolo County Including Capay Valley and Interstate 505, Central Yolo and Northeast Solano counties Including Woodland and Davis, Sacramento Metro and Western El Dorado and Amador counties, Central Solano County Including Fairfield and Vacaville, Southwestern Solano County Including Vallejo, Sacramento County Delta, San Joaquin County Delta, Central San Joaquin County Including Stockton Metro, Tracy Triangle Below 1000 ft, Northeastern San Joaquin Valley Below 1000 ft, Western Stanislaus County Below 1000 ft Including Interstate 5 and Central Stanislaus County Including Modesto Metro.
The NWS states that the warning was issued for gusty winds and low humidity. Winds are forecasted to be north winds 20 to 30 mph. Gusts 35 to 45 mph, locally up to 50 mph around the Delta and the far western Sacramento Valley and humidity daytime minimum humidities of 7 to 15%; Overnight maximum relative humidities 30 to 55%.
"The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Outdoor burning is not recommended," comments the NWS.
This warning is in effect until Monday at 8 p.m.
What is the significance of a red flag warning?
A red flag warning means that extreme fire weather conditions are either occurring now or will shortly, according to the NWS. Warm temperatures, very low humidities, and stronger winds are expected to combine to produce an increased risk of fire spreading rapidly.
What are the recommended measures to take during a red flag warning?
A red flag warning demands vigilance and immediate readiness to respond to potential fires. The NWS provides these vital guidelines to minimize fire hazards and ensure your safety:
1. Bolster burn barrel safety:
In areas where controlled burning is sanctioned, make certain that burn barrels sport a weighty metal cover, equipped with holes no larger than 3/4 of an inch.
2. Mindful handling of smoking materials:
Never discard lit cigarette butts outside, and avoid tossing cigarettes or matches from a moving vehicle. These seemingly small actions can lead to dry grass ignition, potentially sparking a wildfire.
3. Prudent fire extinguishing practices:
To thwart accidental fires, diligently extinguish all outdoor fires. Suffocate them with an ample deluge of water and stir to ensure complete cooling. Submerge charcoal in water until it's entirely devoid of heat. Never leave live charcoal unattended.
4. Never leave fires unattended:
Avoid leaving any fire unattended. Even sparks or embers carried by the wind can ignite nearby leaves or grass, triggering a fire that spreads rapidly.
Understanding the gravity of a red flag warning and adhering to these precautions is pivotal in mitigating the risk of wildfires during these perilous conditions. Prioritize safety, stay well-informed, and act responsibly to safeguard lives and property.
Source: The National Weather Service
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This story was originally published May 15, 2026 at 10:53 AM.