Added on: March 21, 2010
On October 1, 2008, the Aviation Weather Center (AWC) in Kansas City began issuing a new forecast called a Graphical-AIRMET. This new forecast product, dubbed the G-AIRMET, won't make it into a standard briefing with an Automated Flight Service Station (AFSS) specialist and it won't likely be included in a DUATS textual briefing either. That's because it is not a text-based product like the traditional AIRMET; instead, it is created by forecasters graphically and is designed to stand alone without any accompanying text. Traditional AIRMETs are a time-smeared forecast valid over a range of 6 hours. The G-AIRMET, on the other hand, includes five individual snapshops (forecast areas) valid at 3-hour intervals out to 12 hours. Consequently, these snapshots better define the hazardous weather in both time and space. As of March 16, 2010, G-AIRMETs have been approved by the FAA for operational use. In this workshop, we'll take a look at this new NWS forecast product.