Using the 'JetStream NWS Online School for Weather', find out what a 'Dryline' is, where it typically forms, and what kind of weather phenomena it is associated with. Provide a concise explanation of a dryline based on the information found.
Navigate to the NWS Education page at 'https://www.weather.gov/education'. Click on the 'JetStream NWS Online School for Weather' link. On the JetStream page, use the search bar to search for 'Dryline'. Navigate to the most relevant search result or section detailing 'Dryline'. Extract the definition of a dryline. Identify where drylines typically form. Note the type of weather phenomena associated with drylines. Synthesize this information into a concise explanation.
Successfully navigate to the 'JetStream NWS Online School for Weather'. State that a dryline is a boundary separating moist and dry air masses. Identify that drylines typically form in the central and southern Great Plains of the United States. State that drylines are often associated with severe weather, including thunderstorms and tornadoes, due to the strong lift provided by the convergence of air masses.