Avwx When Forecasts Clash Cd

Add to Wishlist
Part# 13-08034


Many convective forecasts used by pilots are issued by multiple organizations within the National Weather Service (NWS). This includes the Aviation Weather Center (AWC), Storm Prediction Center (SPC), Hydrometeorological Prediction Center (HPC) and the local Weather Forecast Offices (WFO). While forecasters can and do communicate with each other, there’s no specific requirement that forecasters in different organizations collaborate to produce consistent forecast guidance. Consequently, it is possible that one or more convective forecasts that many pilots frequently incorporate into their preflight analysis may tend to disagree at times. When we notice that one or more forecasts clash, it is important to discover why they may seem to disagree. In some cases, the clash may just be from a lack of knowledge or false perception of how to properly utilize the guidance. It could also be just a bad forecast or one where a forecaster has taken a poor meteorological risk.

This program is divided into three training modules. Each module will describe a separate case where the possibility of thunderstorms was questionable and resulted in a clash with other official and unofficial National Weather Service (NWS) guidance. For each case, we’ll first identify the errant forecast(s) and then integrate other meaningful guidance into the analysis to show that the questionable forecast was truly unreasonable with respect to the development or lack of development of thunderstorms. Instrument rated or not, this program is designed to show the pilot how to recognize a bad convective forecast early in the process. This is easily accomplished through a comprehensive preflight analysis by employing forecast guidance from multiple NWS sources. Consequently, the most important rule is to never rely on one single forecast product for preflight planning decisions.

Bio: Scott C. Dennstaedt is an FAA-certificated instrument flight instructor and former NWS meteorologist specializing in aviation weather training.

Approx 35 minutes
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -



Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

View in Catalog

View Image View in Catalog