Hat tip to Luis Rosa at the National Weather Service forecast office at San Juan, who alerted us to the presence of an undular bore that was moving southward toward Puerto Rico on 14 March 2013. The southward propagation of the wave clouds associated... Read More

A Meteor entered the Earth’s atmosphere over the Ural Mountains of western Russia today at approximately 0320 UTC (09:20 AM local time). The visible image from just after sunrise, above, from the Chinese FY-2D satellite shows an east-west plume, likely from the meteor, near Chelyabinsk. Meteosat-9 also captured the event... Read More

The Day/Night band on Suomi/NPP once again detected an extensive display of Aurora Borealis over northern Canada, as shown in the image toggle above. The Day/Night Band shows bright illumination over the northern halves of Quebec, Ontario and Manitoba. At the same time, near-infrared imagery at 3.74 µm shows very cold air, strongly suggestive of... Read More

The AWIPS images above (click to play animation) showed low-resolution GOES-15 10.7 µm IR data with an overlay of the surface analysis and pilot reports of turbulence. A number of reports of moderate turbulence could be seen in the vicinity of the Hawaiian Islands (at altitudes between 9,000 and 27,000... Read More