I wonder what kind of herbivore has been nibbling on this cactus less than 1 mile from the suburbs of El Paso, Texas. There are certainly no cattle anywhere nearby.

Opatija, Croatia

and the san rafael reef stretching away to the south

Stormclouds on the horizon, seen from Nightcliff Jetty, Nightcliff, Darwin, Northern Territory, Australia

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Edge of the supercell storm over airstrip on the first day of Croatian international airshow CIAV

Spring storm across the bay. 20211107-EM5-PB073856

The setting Sun and a sea of turbulent cloud create drama in the Pembrokeshire sky.

Tripod-mounted (I believe) and possibly polarised.

Poipu, Kauai, Hawaii. Processed in Nik Color Efex Pro 4 (Tonal Contrast and Graduated Neutral Density filters) and Nik Dfine 2.

Strormcloud, Rosendahl-Darfeld, 15-06-2016

Sunset at Cattle 9 Tails

Sunset at Cattle 9 Tails

Stormcloud, Dülmen, Germany, 21-07-2016

Emmons farm, one of them at least! Half the road for the past 100 years or more has had the Emmons family living on it. A thunderstorm was making its way a bit south, but no rain where I was. Most area farmers have pulled in their first cutting of hay and wouldn't mind a bit of rain to get things growing again...

An impending storm during sunset

I had a really good thunderstorm with a lot of lightning was back in 2011? I'll take what I can get when I can get it these days.

Dusk, seen from Stokes Hill Wharf, Darwin, Northern Territory, Australia

Massive stormclouds over Darwin, Northern Territory, Australia

Stormclouds approaching Rhos on Sea harbour

Field, Northumberland County, Ontario Canada

Footer and storm clouds

Between stormclouds during sunset, seen from Stokes Hill Wharf, Darwin, Northern Territory, Australia

Mammatus (also called mamma[1] or mammatocumulus, meaning "mammary cloud") is a cellular pattern of pouches hanging underneath the base of a cloud, typically a cumulonimbus raincloud, although they may be attached to other classes of parent clouds. The name mammatus is derived from the Latin mamma (meaning "udder" or "breast").

According to the WMO International Cloud Atlas, mamma is a cloud supplementary feature rather than a genus, species or variety of cloud. The distinct "lumpy" undersides are formed by cold air sinking down to form the pockets contrary to the puffs of clouds rising through the convection of warm air. These formations were first described in 1894 by William Clement Ley.[1][2][3]

Characteristics

Mammatus clouds on an anvil cloud

Mammatus are most often associated with anvil clouds and also severe thunderstorms. They often extend from the base of a cumulonimbus, but may also be found under altostratus, and cirrus clouds, as well as volcanic ash clouds.[4] When occurring in cumulonimbus, mammatus are often indicative of a particularly strong storm. Due to the intensely sheared environment in which mammatus form, aviators are strongly cautioned to avoid cumulonimbus with mammatus as they indicate convectively induced turbulence.[5] Contrails may also produce lobes but these are incorrectly termed as mammatus.[1]

Wikipedia

Early twilight storm clouds over downtown Columbus. The setting sun casts an eerie light through the fast-moving clouds.

Best viewed when L is pressed.

Taken in Rural Oklahoma

Canola field Kingsthorpe QLD

Stormclouds

A stormy morning on the last day of the year.

Wishing everyone a great 2012!

Stormclouds on the horizon, seen from Nightcliff Foreshore, Nightcliff, Darwin, Northern Territory, Australia

I had to stay inside to take this shot, luckily caught a faint lightening! My 5D got wet but it was okay. I didn't even need ND filter on this shot.

Rape Seed Field near Kidderminster

Storm clouds over Loxahatchee NWR, Boynton Beach, Florida

Black clouds above the Alps

Dunkle Wolken im Kleinwalsertal

Stormclouds with lightning inside, seen from Channel Island, Darwin, Northern Territory, Australia