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

Wind gusts of 50 to 70 mph in the mountains and 30 to 50 mph on the coasts and valleys are forecast for Los Angeles and Ventura counties on Wednesday. Residents exhausted by days of fire face red flag warnings with the rare "particularly dangerous situation" designation issued for those counties through Wednesday afternoon.

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.

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.

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.

The National Weather Service issued red flag warnings for severe fire conditions. Winds could reach 65 mph, the NWS warned. NewsNation senior national correspondent Brian Entin shares the latest details.