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Winter 2013-14 Pattern Discussion III


Marion_NC_WX

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What an interesting turn of events. About ready to call it a season then the gfs, nam reels me back in. ^_^  <_<  :axe:

I must admit I have a bad case of spring fever. Ready for a good solid stretch of 70-80 weather no higher than that. 

 

Much rather have something close to the 12z nam, gfs. A cold rain followed by a pasting of snow.

 

18z nam looks funky overall and a nasty ice event. Alot of zr/sleet with the ULL in SC and NC.

 

 

Frit.

 

There looks to be alot of moisture over the mountains via 18z nam. But face value of nam would be cold rain for the mountains nasty ice for the foothills piedmont.  Not sure if it is entirely correct but there is a significant warm nose present from below 850 to 700mb. That warm nose is near 5 degrees C. Mid 30s to near 40 in the warm nose. That would be a pretty insane inversion for this time of year. 20s in the piedmont with temps near 40 in the 5-10K foot range.

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There's not even a mention of snow or Ice in my forecast! cold rain

 

RAH is more bullish.  I've got Rain/Snow Likely on Monday and a Chance of Snow Monday night on my point forecast, FWIW.

 

The 18z GFS and 18z NAM were very interesting.  Apparently, we can't get ice any other time of year these days, but March is the new prime climo period for ice storms.  :yikes:

 

---

 

Interestingly, out to the end of its run, the 18z RGEM appears to be south of the 18z NAM.

 

w88hgj.gif

 

EDIT: Whee, looks like JoshM fired up a thread for this potential event at D3-D5: 

 

http://www.americanwx.com/bb/index.php/topic/43201-318-319-icy-event/

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This would be incredibly unusual to have back to back ice storms in March. What a pattern, if it turns out this way!

 

CR,

 Interestingly, RDU had two ZR/IP's in 3/1960 (2-3rd, which included SN at first, and 16th) and 2 in 3/1978 (3-4th and 8-9th)!

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CR,

Interestingly, RDU had two ZR/IP's in 3/1960 (2-3rd, which included SN at first, and 16th) and 2 in 3/1978 (3-4th and 8-9th)!

Well, that shows it can happen! This March, so far, the action has been just west. Hopefully, we'll get one more shot with this one. By the way, what is your source for all your awesome research? I'm sure you have many....but what's the best?

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CR,

Interestingly, RDU had two ZR/IP's in 3/1960 (2-3rd, which included SN at first, and 16th) and 2 in 3/1978 (3-4th and 8-9th)!

Do the models have climo in their equations? I ask, because the last storm and now this potential are trending colder 3-4 days out. Just wondering if the rising temp avgs in March give the models warm biases that they can only correct 2,3 or 4 days out?
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Well, that shows it can happen! This March, so far, the action has been just west. Hopefully, we'll get one more shot with this one. By the way, what is your source for all your awesome research? I'm sure you have many....but what's the best?

 

 First, I look at old wx maps to look for storms: 

 

 http://docs.lib.noaa.gov/rescue/dwm/data_rescue_daily_weather_maps.html

 

 This is how I found out that the 3/6-7/2014 wedge/GOM low combo was easily the most impressive for 3/1-15 through 1969-2003. This is also how I found all of the old SE sig. ZR/IP's for early March.

 

The source for this RDU data is this:

 

 http://www.ncdc.noaa.gov/IPS/lcd/lcd.html%3bjsessionid=803B2A836C6AE892F9F4813DAFE58344

 

 

 My best source may be the old newspapers at both the ATL and SAV libraries that I read on and copied from micro. I do also have numerous internet sources.

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Do the models have climo in their equations? I ask, because the last storm and now this potential are trending colder 3-4 days out. Just wondering if the rising temp avgs in March give the models warm biases that they can only correct 2,3 or 4 days out?

 

 I doubt that it has much to do with it being March.

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First, I look at old wx maps to look for storms:

http://docs.lib.noaa.gov/rescue/dwm/data_rescue_daily_weather_maps.html

This is how I found out that the 3/6-7/2014 wedge/GOM low combo was easily the most impressive for 3/1-15 through 1969-2003. This is also how I found all of the old SE sig. ZR/IP's for early March.

The source for this RDU data is this:

http://www.ncdc.noaa.gov/IPS/lcd/lcd.html%3bjsessionid=803B2A836C6AE892F9F4813DAFE58344

My best source may be the old newspapers at both the ATL and SAV libraries that I read on and copied from micro. I do also have numerous internet sources.

Thanks man. I'll check out those links.

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Including summer of 2013 this could be the greatest CAD yearly period ever.

I would take it back to spring of '13  ;)  This past year (almost to date) has been simply amazing with all of the CAD's we have had. I would love nothing more than to have them continue into next spring  ^_^

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I would take it back to spring of '13   ;)  This past year (almost to date) has been simply amazing with all of the CAD's we have had. I would love nothing more than to have them continue into next spring  ^_^

 

Next winter...and the next..and the one after that, lol.  As long as those highs keep coming down, I won't have to think about spring..or summer :)  Winter is just way too short for me.  T

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Euro Ensemble has -EPO (ridge up through Alaska) with back to back Canadian Highs moving into the U.S....below normal temperatures east of the Rockies next Sunday through the following Thursday...same on GFS Superensemble...the beat goes on

I guess this thread will be open till August.
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well are we done.  not seeing any chatter about any possible snow storms.  was reading the paper this morning and nws is saying looking like El Nino is starting to perk up that it would mean more rain and at the end of the year more snow. 

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Euro Ensemble has -EPO (ridge up through Alaska) with back to back Canadian Highs moving into the U.S....below normal temperatures east of the Rockies next Sunday through the following Thursday...same on GFS Superensemble...the beat goes on

 

Overnight Euro Ensemble keeps the back to back Canadian Highs, and actually has a Miller A in between the 2 that runs from central / northern FL, off Hatteras to off Boston, with 850mb staying below 0 deg throughout from Raleigh to Charlotte to far north GA.  Previous Euro Ensemble had it too.  Believe what you want to believe, lol.  At any rate, looks like a below to well below normal temperature period late next weekend into the following week  

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