Author Topic: NOAA terminology question  (Read 3383 times)

Offline Reel Time

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NOAA terminology question
« on: June 30, 2012, 05:42:03 PM »
 From todays synopsis,,

Synopsis...AN AREA OF HIGH PRESSURE GENERALLY REMAINS SITUATED NEAR THE SOUTHEASTERN STATES THROUGH NEXT WEEK. MEANWHILE, A WEAK COLD FRONT WILL STALL TO OUR SOUTH SUNDAY AND MONDAY. THIS BOUNDARY IS THEN FORECAST TO LIFT NORTHEASTWARD AS A WARM FRONT TUESDAY INTO WEDNESDAY. THE NEXT COLD FRONT MOVES THROUGH LATER WEDNESDAY INTO THURSDAY, BEFORE STALLING ACROSS THE MID ATLANTIC FRIDAY.



 My question: where they say cold front, does that really read/refer to a low pressure system?  Then they also refer to a warm front, which i can only assume is a high pressure?
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Offline Bucktail

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Re: NOAA terminology question
« Reply #1 on: June 30, 2012, 05:47:26 PM »
Pman can correct me if I'm wrong, but I think you have that backwards.  High pressure is usually associated with a cold front.


Offline Pfishingruven

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Re: NOAA terminology question
« Reply #2 on: June 30, 2012, 06:16:42 PM »
Yes, Bucktail is correct.  A front is just a boundary separating airmasses and does not ALWAYS mean high or low pressure system associated with it.

A cold front is usually ASSOCIATED with a Low Pressure System of some type, however, a cold front is actually high pressure.  A cold front brings cold sinking air making pressure rise.

A warm front is actually low pressure, bringing warm rising air that lowers the actual pressure at mean sea level!  Warm fronts can be associated with Low Pressure Systems as well and when they interact with a Low, you get storms, especially when a rising warm front means a cold front and a Low.

So, NOAA is not saying that there is a pressure system at all present, just that a front is in the area.  If you look at a Surface Analysis Map, you will notice Cold Fronts and Highs are blue and Warm Fronts and Lows are red.  Also, you can see that a front is not always accompanied by the Low or High System.

The NWS will always note Low or High Pressure Systems and where they are located or going.

Hope that explains it  TT^

Offline IrishAyes

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Re: NOAA terminology question
« Reply #3 on: June 30, 2012, 08:05:49 PM »
Who's on first!?!?!?  5hrug  ;D

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Offline Reel Time

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Re: NOAA terminology question
« Reply #4 on: June 30, 2012, 09:37:53 PM »
got it, thanks for clearing it up for me.
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Offline Pfishingruven

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Re: NOAA terminology question
« Reply #5 on: July 01, 2012, 12:13:46 PM »
got it, thanks for clearing it up for me.

 TT^

Offline wb

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Re: NOAA terminology question
« Reply #6 on: July 01, 2012, 08:48:04 PM »
what if it's a back door front, does that switch it around?  thud


 

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