Satellite

General Discussions: ASK John: Satellite

By snowfan470 on Tuesday, January 22, 2008 - 07:13 pm: Edit Post

Hey John,

I have a couple questions here, i hope it doesn't take up to much of your time...

Since the radar hardly ever picks up the lake effect snow bands in the keweenaw and the western U.P, what exactly do you use to determine where the snow bands are? Is there any site or program(that I could get) that shows frequent high resolution 1 km GOES imagery of just the U.P or frequent MODIS imagery?(not just two images for the whole day like on the coastwatch site).

Also... in this MODIS image...what caused such a heavy prominent band of lake effect snow to develop even though the lake effect event looks to be wind parallel? (This was on Jan 1st) The band is right around mass city just northeast of lake gogebic and stretches all the way into the escanaba area.

lake effect


This is what the scene was like as it moved through twin lakes southward...
lake effect1

And this is what it looked like as we later drove through it...whiteout...

lake effect2
lake effect3


By snowfan470 on Tuesday, January 22, 2008 - 07:30 pm: Edit Post

Sorry about that, look on the next!


By admin on Wednesday, January 23, 2008 - 12:17 pm: Edit Post

snowfan470-

It can be a challenge to try and determine where the LES is falling in the western UP and Keweenaw, especially at night. During the day visible satellite and web cams help to fill in the void left by the lack of radar data. At night, it is pretty much a guess, sometimes IR can pick up on some dominate bands, or at least show where clear skies are occurring.

The dominate band in the MODIS imagery is caused by converging surface winds.

-John


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