All posts by wxpics

Altocumulus, Contrail and Iridescence

Altocumulus, contrail and iridescence

Altocumulus, contrail and iridescence all in one photo.

Near Seattle, WA

Bob Harrington, http://www.bobqat.com

Lake effect snowdrifts

Image: Roger Caiazza

Liverpool, NY is in the lake-effect snow belt SE of Lake Ontario.  What that means is whenever the wind flows across the lake if we are lucky it is cloudy and if we are not lucky it snows.  Because the predominant wind in the winter is from the NW snow is common, clear skies are rare.  On February 9, 2011 we had a rare clear day with a reminder of the previous night’s weather when wind-blown snow nearly filled the path with drifts.

Comma Cyclone

click to enlarge - warnign large image

Classic Comma Head Extratropical Cyclone over the Eastern U.S.

This extratropical cyclone shows a classic comma shaped cloud system usually associated with dangerous winter weather. In this picture we are seeing the cyclone in its mature, or occluded, stage, when the storm begins to lose its ability to deepen. Soon this storm will begin to shear into a persistent, cold-core low. This image was taken by GOES East at 1845Z on April 12, 2011. Source: NOAA/NASA GOES Project

Hurricane Earl seen from the space station

click to enlarge

Hurricane Earl: The Astronaut View

The relatively placid view from the International Space Station belied the potent forces at work in Hurricane Earl as it hovered northeast of Puerto Rico on Aug. 30, 2010. With maximum sustained winds of 135 miles (215 kilometers) per hour, the storm was classified as a category 4 on the Saffir-Simpson hurricane scale as it passed north of the Virgin Islands.

Continue reading Hurricane Earl seen from the space station

Satellite Imagery of Near-Record Flooding Along Mississippi and Ohio Rivers

These two false colored images from the NASA Terra satellite show the Cairo, IL region on April 28, 2011 and April 29, 2010. The differences are stark. Blue colors indicate water, green and brown is dry land. MODIS, the visible and infrared sensor on Terra, is the precursor to the visible and infrared sensors to be flown on NOAA’s future geostationary and polar-orbiting satellites, GOES-R and JPSS.

As of April 29, 2011, the National Weather Service lists 369 locations around in the country as flooded, based on river gauge measurements. Continue reading Satellite Imagery of Near-Record Flooding Along Mississippi and Ohio Rivers

Tornado tracks of the April 27-28, 2011 tornado outbreak

Bright reds, oranges and yellows show tracks of where rotation was strongest as detected by NWS Doppler radars during the April 27-28, 2011 tornado outbreak. - click to enlarge
NOAA’s preliminary estimate is that there were 211 tornadoes on April 27-28, 2011. Continue reading Tornado tracks of the April 27-28, 2011 tornado outbreak