Anvil Cloud Over Bangalore, India

June 12, 2012

Anvil Cloud Over Bangalore, India

: Raqqasah Shruti Chakravarti; Raqqasah's Web site
Summary Author: Raqqasah Shruti Chakravarti; Jim Foster

The photo above shows an impressive thunderhead looming over Bangalore, India. It caught my attention as it took shape one evening early last autumn. After about 45 minutes, a classic anvil shape resulted. Note the shaft of precipitation near the thickest portion of this anvil cloud (center). It's likely that this anvil is glaciating, and there's thus probably no active updraft associated with it.

Also, note that what appears to be a pileus cloud at the upper left corner of the storm. The Sun had set as observed from Bangladore, but the upper reaches of the anvil are still illuminated, as are the pileus cloud and cirrus cloud deck at lower center (beneath the anvil). Lower altitude clouds, below about 20,000 ft (6,000 m), are in darkness. Photo taken on October 13, 2011.

Photo details: Camera Maker: Panasonic; Camera Model: DMC-FZ20; Focal Length: 9.4mm (35mm equivalent: 56mm); Aperture: f/4.0; Exposure Time: 0.0050 s (1/200); ISO equiv: 100; Exposure Bias: -0.66 EV; Metering Mode: Matrix; Exposure: program (Auto); White Balance: Manual; Light Source: Cloudy; Flash Fired: No (enforced); Orientation: Normal; Color Space: sRGB; Software: Ver1.0.