What is a "CAD" event?

[Guest]

I have seen the term "CAD Event" used occasionally here, on other message boards and in NWS AFDs. What does it mean/stand for?

[wxguy25]

I have seen the term "CAD Event" used occasionally here, on other message boards and in NWS AFDs. What does it mean/stand for?

CAD is short for Cold Air Damming.

Since this is SF's area of expertise Ill let him handle the specifics.

[Wacahootaman]

This board needs a sticky post with all the abbreviations and acrynomyms for us novices!

[Stormsfury]

Been really busy lately...

NEWeatherguy, this is an excellent link WRT to CAD situations and where I learned a lot more in detail thru here and another site (that's linked on the link below) ...

hope this helps out.

http://www4.ncsu.edu:8030/~nwsfo/storag ... /cadclimo/

[Miss Mary]

This board needs a sticky post with all the abbreviations and acrynomyms for us novices!

Superb idea! I'm a novice when it comes to wx related forecasting terms. I have the other abbreviations figured out pretty much by now (BTW, LOL, J/K, etc.). Just not the wx related abbreviations....

Mary

[Pileus]

Stormsfury, I noticed the link that you posted is from the COMET
program. Have you downloaded any of the MetEd learning modules from
COMET ? Their site looks impressive. Are there other online Met courses
besides COMET ? Thanks.

[wlfpack81]

A CAD event takes place when shallow cold air gets trapped b/t the App. Mt. to the west and a coastal front to the east which usually sets up along the se-ern coastline. This coastal front usually sets up in winter due to the temp difference b/t the warm gulf stream and the coastal landmasses (warm moist air to the east of the front, cold air to the west over land). The text-book setup as shown by those in that link provided is to have a high pressure move through the ne-ern U.S. while building s-ward through the piedmont of the Mid-Atl region (VA, NC)

Normally in a good CAD situation you'll have the low which will develop offshore and basically ride the coastal front along the coast. As you can probably guess all this warm moisture from the GS and the Atlantic being thrown over this cold shallow air inland can create weather havoc. This is one of the reasons the Greensboro / Winston-Salem region (the Triad) get's so many ice storms each winter (they tend to lie right under the axis of the cold shallow air). You go an hour or so east ot Raleigh, NC and you'll see they're often on the e-ern edge of these ice storm events. Hopes my attempts at this explanation helps some. Being that I went to NC State the term "CAD" was hammared into my vocab over and over