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#1
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Weather chart oddity?
OK, I've never seen this before.
Take a look at the synoptic chart I've saved at http://www.alioth.net/tmp/fronts.gif There is a cold front, just south west of Ireland. The 'sharks teeth' are outlines, rather than filled in. The other week I saw a warm front drawn like this. What's the difference between this and a 'normal' cold front? -- Yes, the Reply-To email address is valid. Oolite-Linux: an Elite tribute: http://oolite-linux.berlios.de |
#2
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Weather chart oddity?
Dylan Smith wrote:
snip The other week I saw a warm front drawn like this. What's the difference between this and a 'normal' cold front? I use ADDs for prognostic charts and these charts often contain the warm front that has not been colored in, which represents a "dry line." http://www.hpc.ncep.noaa.gov/html/fntcodes2.shtml A dry line is defined as "a boundary between warm, dry air and warm, humid air in the southeast sector of a mature midlatitude cyclone; likely site for severe thunderstorm development." -- Peter |
#3
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Weather chart oddity?
"Dylan Smith" wrote in message ... OK, I've never seen this before. Take a look at the synoptic chart I've saved at http://www.alioth.net/tmp/fronts.gif There is a cold front, just south west of Ireland. The 'sharks teeth' are outlines, rather than filled in. The other week I saw a warm front drawn like this. What's the difference between this and a 'normal' cold front? Hmmm, do a google for "occluded front" and see if that answers your question. |
#4
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Weather chart oddity?
"Casey Wilson" N2310D @ gmail.com wrote in message news:ilO1g.9711$oQ2.398@trnddc05... "Dylan Smith" wrote in message ... OK, I've never seen this before. Take a look at the synoptic chart I've saved at http://www.alioth.net/tmp/fronts.gif There is a cold front, just south west of Ireland. The 'sharks teeth' are outlines, rather than filled in. The other week I saw a warm front drawn like this. What's the difference between this and a 'normal' cold front? Hmmm, do a google for "occluded front" and see if that answers your question. Why doesn't everyone unsubscribe from this group and just bang around GOOGLE all day? |
#5
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Weather chart oddity?
On 2006-04-20, Casey Wilson wrote:
Hmmm, do a google for "occluded front" and see if that answers your question. Except it's not an occluded front. An occluded front has a line with both the 'sharks teeth' and the warm front semicircles on it, the sharks teeth and semicircles filled in (and if in colour, drawn in magenta) and on the leading edge of the occluded front. What is depicted is definitely not the symbology for an occluded front. (There is an occluded front behind it - straggling the centre of the 998 millibar low pressure system that is following the cold front with the white sharks teeth). Besides, the weather systems are moving eastbound, and for an occlusion to occur, a cold front must catch up with a warm front. Cold fronts generally travel faster than warm fronts. This particular front is ahead of another cold front and appears to cross a stationary front at one point. -- Yes, the Reply-To email address is valid. Oolite-Linux: an Elite tribute: http://oolite-linux.berlios.de |
#6
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Weather chart oddity?
On 2006-04-20, Peter R. wrote:
Dylan Smith wrote: snip The other week I saw a warm front drawn like this. What's the difference between this and a 'normal' cold front? I use ADDs for prognostic charts and these charts often contain the warm front that has not been colored in, which represents a "dry line." Well, the exception here is that both the cold front with unfilled sharks teeth and the warm front with unfilled semicircles both occured over the Atlantic Ocean - not the sort of place you expect to find a dry line! -- Yes, the Reply-To email address is valid. Oolite-Linux: an Elite tribute: http://oolite-linux.berlios.de |
#7
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Weather chart oddity?
("Matt Barrow" wrote)
Why doesn't everyone unsubscribe from this group and just bang around GOOGLE all day? No need to unsubsribe from this group. A person CAN manage to do both. :-) Montblack http://www.tallpaul.com/downloads/movs/BOTD.mov chuckle |
#8
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Weather chart oddity?
"Dylan Smith" wrote in message ... OK, I've never seen this before. Take a look at the synoptic chart I've saved at http://www.alioth.net/tmp/fronts.gif There is a cold front, just south west of Ireland. The 'sharks teeth' are outlines, rather than filled in. The other week I saw a warm front drawn like this. What's the difference between this and a 'normal' cold front? http://www.msc-smc.ec.gc.ca/educatio...g167_e.cfm#193 Notwithstanding the rather bizarre structure which your chart-analyst appears to see..... ..... what an unfilled cusp is *supposed* to indicate is an "upper" front". An upper front is a *steepening* of the slope in the cold air, such that a station at the surface does not notice any change in air mass per se, but it notes the *effects* of a cold front passage (or a warm front passage) because the structure *above* him corresponds to the classic cold-front or warm-front scenario. Note the cross-sections slightly higher up the same page, at "frame 188" |
#9
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Weather chart oddity?
"Montblack" wrote in message ... ("Matt Barrow" wrote) Why doesn't everyone unsubscribe from this group and just bang around GOOGLE all day? No need to unsubsribe from this group. A person CAN manage to do both. :-) Ambidextrous? -- Matt --------------------- Matthew W. Barrow Site-Fill Homes, LLC. Montrose, CO |
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