The federal aviation regulations require you to learn about the weather that might affect any flight. A weather briefing checklist ensures you don't miss any important information while doing this. The best way to obtain a briefing is to call or visit an FAA Flight Service Station (FSS).

Yes, for pilots operating under FAA regulations, obtaining a weather briefing is not just a best practice—it is a legal requirement. Specifically, 14 CFR § 91.103 states that "Each pilot in command shall, before beginning a flight, become familiar with all available information concerning that flight," which explicitly includes weather reports and forecasts for any flight not in the vicinity of an airport. This "High-Fidelity" planning typically involves getting a Standard Briefing from an automated service like 1800wxbrief.com or an app like ForeFlight. The briefing covers METARs (current conditions), TAFs (forecasts), PIREPs (pilot reports), and NOTAMs (notices to air missions). Failing to obtain a proper briefing can lead to "VFR into IMC" (flying into clouds without an instrument rating), which is a leading cause of fatal accidents in general aviation. For professional 121 or 135 operators, this briefing is part of a formal dispatch process that must be documented and signed off before the wheels leave the tarmac.