The Hut Webcam, pointed at Mt. Redoubt, Alaska, has been repositioned to provide a close-up of the dome forming in the cauldron of the volcano. The image above, taken April 16, 2009, has had its histogram rebalanced by me for colour and luminosity, brightness, contrast and gamma adjusted for definition, and colour corrected to 6500K, in order to better show the cauldron area and compensate for atmospheric shift. Original image courtesy the Hut Webcam and the Alaska Volcano Observatory, USGS.

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24 frames of supercell development over Fort Worth Texas 2009-06-12 (METAR FWS). Composite scan and Echo Tops scans, NWS colour scheme, ~100 minutes. Echo Tops reports vertical development to greater than 65,000 feet.

All frames created and collected by Storm Predator in NWS realtime, and saved through the "save history" function. These animations created from the history frames with Paint Shop Pro 9 Animation Shop.

First is composite scan:

And this is the corresponding Echo Tops development. If you look closely, you can see the brief overshoots into 70K airspace:

The following came from the Topeka, Kansas, station KTWX, base reflectivity, early this morning. I'm not in the plains states (Great Lakes region for me), but I'm interpreting this as convective development along a well defined dryline. Please jump in to correct me if I'm wrong, as we don't generally experience dryline convection here. City overlay has been turned off to make the radar image clear.

First image shows the dryline just beginning to show definition:

Second image, 45 minutes later, shows clear definition of the line:

And the third image, an hour and 45 minutes later, shows the convective process maturing along it. Nice sunrise anomaly (the blue streak pointing off to the NE):

Here is an animation of this event in Long Range Base Reflectivity mode. Start is 4:16AM CDT (0916Z) and runs to 10:19 AM CDT (1519Z) (62 frames):

And for completeness, here is the Storm Relative Velocity scan for the same window 4:05 CDT to 10:48 CDT (66 frames):