Definitions for "Dry Line"
Keywords:  moist, gulf, desert, eastward, mexico
The leading edge of an advancing hot dry air mass of continental tropical origin, the Desert Southwest for the United States. The dry line usually acts as a focusing mechanism for strong thunderstorms during the summer convective season.
A boundary seperating a dry and a moist airmass. The dry line is usually situated north-south separating the dry air from the southwestern states and the moist air from the Gulf of Mexico in the spring and summer months. The dry line is a focus point of thunderstorms as it moves eastward by a strong upper level storm system or by daytime heating. The dry line is generally represented on weather maps by a dashed grey line.
T1 line not providing span power.