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.
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a boundary between a dry air mass and a moist air mass
a boundary that separates a moist air mass from a dry air mass
A boundary that separates warm dry air from warm moist air. It usually represents a zone of instability along which thunderstorms form. The boundary is most often found between Pueblo and Lamar during the summertime.
A boundary which separates warm, dry air from warm, moist air. The differences in the two air masses may be significant. The dry line is usually a boundary of instability along which thunderstorms form.
A line that separates very warm, moist air to the east from hot, dry air to the west.
A boundary separating moist and dry air masses. It is an important factor in severe weather frequency in the Great Plains. It typically lies north-south across the central and southern High Plains during the spring and early summer, where it separates moist air from the Gulf of Mexico and dry desert air from the southwestern states. The dry line typically advances eastward during the afternoon and retreats westward at night. However, a strong storm system can sweep the dry line eastward into the Mississippi Valley, or even east, regardless of the time of day.
A boundary between warm humid and warm dry air. There is little temperature contrast across dry lines so they cannot be labeled as fronts. Convective clouds are often triggered along dry lines from midday through the afternoon, and can on occasion grow into organized thunderstorm squall lines that propagate to the east of the dry line. They tend to move eastward during the morning and return westward during the evening.
the boundary where winds from the Gulf of Mexico and Canada meet and clash
A boundary between moist air and dry air with little or no temperature difference during mid-day. It often serves as a focus for convective initiation.
The boundary between the dry desert air mass of the Southwest U.S. and the moist air mass from the Gulf of Mexico. It usually lies north-south across the central and southern High Plains states during spring and summer. The passage of a dry line results in a sharp decrease in humidity, clearing skies, and a wind shift from southeasterly or south to southwesterly or west. Its presence influences severe weather development in the Great Plains.
A term used chiefly in the USA for the division between warm moist air from the Gulf of Mexico and dry desert air. Severe thunderstorms may develop along this line.
A dry line or dew point line is a boundary separating moist and dry air masses, and an important factor in severe weather frequency in the Great Plains of North America. It typically lies north-south across the central and southern high Plains states during the spring and early summer, where it separates moist air from the Gulf of Mexico (to the east) and dry desert air from the southwestern states (to the west).