Showers and Storms in the East; Dangerously Hot and Dry in the West

A front will bring scattered showers and storms to portions of the Central and Eastern US. Severe storms are expected in parts of the Great Plains and Ozarks today. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Elevated wildfire conditions will develop across portions of the Northern/Central Plains and air quality issues will persist in the Northwest. Read More >

Mountain Wave Activity Over the Southern Rockies
When stable air flows over the rugged terrain in and around New Mexico, mesoscale circulations known as mountain waves can develop. An example is shown in the visible satellite image below. When the wind speed is sufficiently strong and perpendicular, or nearly-perpendicular to mountain ranges, waves develop over and downstream of the barriers. If enough moisture is present in the air, clouds will develop in the portion of the wave with upward vertical motions. While the wind speeds may be 30 kts or greater, the waves remain nearly stationary for periods up to several hours. While these waves are visually appealing, both in satellite imagery and from the ground as lenticular clouds, these waves are often associated with turbulence and therefore, are considered to be an aviation hazard. A study on criteria associated with mountain waves over New Mexico was completed in 2004, and is available in pdf format.

	Visible imagery from 18 October 2004 illustrating an extensive area of mountain waves over the Four Corners region.

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Showers and Storms in the East; Dangerously Hot and Dry in the West

NWS ABQ - Mountain Wave Study

Mountain Wave Activity Over the Southern Rockies