We Love Weather Exclusive

July 2017 meteorological images

To start this monthly edition, check out those two swirls above — the one on the left, a remnant MCV (mesoscale convective vortex, or spinning thunderstorm system) over the desert of Arizona, resembled a weakening eastern Pacific ex-hurricane moving over colder water, and then there was one of those (Fernanda, on the right).

Speaking of Fernanda… When it was a hurricane, at sunrise:

This and top image courtesy of NASA

In the Gulf of Mexico, Tropical Storm Emily spun up relatively suddenly.  It was interestingly a distinct entity while nevertheless still being involved with a non-tropical frontal system.


Farther east, way out in the Atlantic, Tropical Depression Four and a whole lotta dust.

At one point, when zooming in and adding color to a visible/IR combo satellite image, TD4 had a wild appearance with its deep convection surrounded by cirrus filaments.

And on a gray scale image, can you see the freaky face?

These were tropical cyclones having a Fujiwhara interaction in the western Pacific.


This curious little system was up in mid latitudes and not a tropical cyclone, but looked like a sheared one with thunderstorms blown to the east of a low-level center.

Even farther north, a vivid hook echo with a supercell thunderstorm in Manitoba, Canada.

RadarScope via Dave Carlsen @stormstructure

A long-lived thunderstorm system which produced an intense derecho, as seen with GOES-16.

Finally, multiple “undular bores” overlapping each other!



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One Comment

  1. Again, Oh Wow!! I did have to look up ‘undular bores’, even spell check is uncertain about that. (It’s gravity waves, I found out.) But, what happened in Manitoba Canada? Did a tornado touch down?

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