Saturday, November 29, 2014

Mountain Pass Reports- Improving Conditions

Snow ending -  roads still slippery...

Traveling tonight or Sunday over the mountain passes?? It looks like travel conditions will be improving as snow comes to an end this evening. The roadways may still have some snow and ice on them. Remember to take it slow if your encounter hazardous road conditions. 


Shady Business: Are there jagged mountain ranges on the moon?...or Spiky shadows

Early depictions of the moon took cues for telescopic observations, showing a rugged, 
forbidding landscape. As it turns out, this is an illusion.

This sketch of the Caucasus Mountains perfectly captures the dramatic, pointed shadows cast by peaks in the low sunlight.  Could the snowbank scenario be playing out on the Moon? McCabe

Sunlight grazing the top of a snowbank (right) throws the rounded knobs into stark relief on the street below. Every detail has been stretched and exaggerated by the sun’s low angle to create a shadowy "mountain range".

The very fact that the moon is airless allows every bit of meteoric dust to zap the surface at tens of thousands of miles per hour. Over the 4.5 billion year lifetime of the moon, myriad micrometeorite impacts have acted like cosmic sandpaper, grinding down the once craggy peaks into the smooth hills and mountaintops so vividly seen in photographs returned from the Apollo missions. 

Peaks of the Taurus-Littrow Mountains loom beyond the window of the Apollo 17 lunar module. From a closer perspective, we get a better idea of the relative smoothness of lunar mountains.  NASA 

Pointed shadows stretch across the floor of the 68-mile-wide crater Plato. The best place to see extreme shadows is right along the Moon's terminator, the ever-shifting boundary between lunar day and night. This is where the Sun is near rising (between New and Full phases) or setting (from Full to New). Damian Peach 

A few target areas where isolated peaks in mountain ranges, like the Alps and Caucasus, and along the rim of craters like Plato make for dramatic shadow-casting. Dates shown are approximate times when the terminator cuts through each region.
Virtual Moon Atlas - Patrick Chevalley, Christian Legrande 

Read the full article here

Wednesday, November 26, 2014

0-to-60 mph -is it a turbo-charged V8 or mother nature

It takes some of the better sports cars out there about 5-7 seconds to go from 0 to 60 mph.
Mother Nature showed off some of her own powerful accelerations during a storm that spawned an incredible gust front in Maine in June 2011
Michael McCormack has a web camera situated at Sebec Lake. About 1:45 p.m., a strong gust front went through the region, and the winds went from near calm to roaring over 60 mph in seconds.
And his web camera was rolling the entire time.
Here is how he described it:
"This image sequence shows a gust front approaching and raising a lot of water from the lake surface. The 4th frame shows a boat being overtaken at the leading edge of the wind. Last image shows a treetop landed in front of the cam." He estimates based on the speed of the front, the winds were blowing at about 66 mph at the leading edge.

Here are the images he was talking about. They are taken 30 seconds apart.

Nationa Flight Delay Info

Official Air Traffic Control System Command Center 

It is the day before Thanksgiving, the busiest travel day of the year.  Are you or your loved ones traveling by air?  Check delay/wait time status below.

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