Forecasters expect Wednesday will be noticeably windier than Tuesday and firefighters warned that vegetation is critically dry.

With Santa Ana winds developing slowly and weaker than originally anticipated, the National Weather Service has delayed implementation of "particularly dangerous situation" red flag warnings -- which were supposed to begin early Tuesday morning -- until 3 a.

Red flag criteria is generally when relative humidity is at 15% or less, combined with sustained winds and/or gusts of 25 mph or greater. Both of these conditions must occur simultaneously for at least 3 hours in a 12 hour period, according to the NWS.

Here's a guide to understanding "particularly dangerous situation" red flag warnings, containment, and other terms related to the devastating fires that have left much of the LA area in ruins.

As firefighters struggle to gain control of massive and deadly wildfires that are raging across parts of the Los Angeles area, the region is once again bracing for the potential of new fires and for current ones to intensify as a new storm system heads for the state.

INDIANA (WTHI) - A red flag warning has been issued in southern California all due to dangerous fire conditions there. It's situations like this that highlight why it's so very important to understand what a red flag warning means before an emergency happens for where you live.

LAFD Chief Kristin Crowley said the department has staffed all available resources and fire patrols and engines are being strategically placed in the high-fire risk areas of the city.

T he National Weather Service’s highest level “Particularly Dangerous Situation” Red Flag warning went into effect in parts of Los Angeles and Ventura counties earl