Nor'Easter Continues to Bring Heavy Rain and Coastal Impacts; Nolo Continues to Impact Hawaii

The nor’easter will weaken tonight, easing beach conditions and coastal flooding, though locally heavy rain will continue in parts of the Mid-Atlantic and New England into Monday. Hurricane Nolo continues to bring strong winds and large waves to Hawaii. A multi-day rain event will return to the Four Corners region Monday and expand to the south-central U.S. by midweek. 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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Nor'Easter Continues to Bring Heavy Rain and Coastal Impacts; Nolo Continues to Impact Hawaii

NWS ABQ - Mountain Wave Study

Mountain Wave Activity Over the Southern Rockies