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Winter Med Range Discussion days 3-10 pbp II


buckeyefan1

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I dont know if you remember this event but December 2000 had this huge warm front that pushed CLT up to 62 degrees. The front never made it to Gastonia which remained in the 30's. Pretty cool event. 

 largest I ever saw was a wedge we had in i think april where it was in the upper 80s in augusta, i think low 80s in columbia, and upper 30s here and mid 30s in greenwood/upstate.

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I remember one instance where CAE was in the 60's with thunderstorms and CLT was 32 with freezing rain.

 

One thing I'm really liking is the lower 10's and single digit dewpoints right before precip onset. Reminds me of the airmasses before some if the big frz rain sleet storms we got around here during the 95-96 winter. It will take a little more time to moisten the lower levels however.

I also remember an event like that where my location had 27 and freezing rain, while Augusta GA was setting somewhere between 75-80. This was in 1994 I think. I'm not sure how warm Columbia  got that day though.

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On the contrary neighbor... :D It's not much but the gfs throws you a small bone lol

                                                                                                                                                                                                                                                                                                     
 GFS Model Run: 12Z FEB 12, 2015                                                                                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                                                                                                                                    
 Forecast Hours:    0hr    6hr   12hr   18hr   24hr   30hr   36hr   42hr   48hr   54hr   60hr   66hr   72hr   78hr   84hr   90hr   96hr  102hr  108hr  114hr  120hr                                                                                                                                                                                                 
 Sfc Prs(mb):    1003.7 1002.5 1009.5 1014.2 1015.6 1016.1 1013.8 1012.8 1011.3 1007.1 1004.2 1007.4 1015.8 1017.4 1017.3 1018.2 1018.0 1016.5 1014.8 1012.6 1007.9                                                                                                                                                                                                 
 Mean SLP (mb):  1013.1 1011.7 1018.7 1023.8 1025.5 1025.4 1023.2 1022.5 1021.0 1016.6 1013.2 1016.7 1025.6 1027.2 1026.9 1028.0 1027.8 1026.2 1024.6 1022.2 1017.2                                                                                                                                                                                                 
 2m agl Tmp (F):   42.3   57.5   36.7   29.2   28.5   40.8   35.3   31.9   30.5   50.4   47.2   39.7   24.7   36.2   31.7   30.0   27.2   40.8   38.1   31.2   33.0                                                                                                                                                                                                 
 2m AGL Dewpt(F):  41.2   39.0   16.5   13.6   10.9    4.7   12.7   15.6   14.1   25.0   33.1   30.9    2.4   -3.0    3.0    1.0   -1.3    5.8   21.4   26.7   32.1                                                                                                                                                                                                 
 2m agl RH (%):      96     49     43     52     47     22     39     50     50     36     57     70     38     18     29     28     29     23     50     83     96                                                                                                                                                                                                 
 10m agl W  Dir:    280    284    341     14      3    334    195    203    241    245    250    307     42    360     60    103     95    139     67     75     74                                                                                                                                                                                                 
 10m agl Spd(kt):     6     15     18      7      6      2      6      7      7     17     14      9     11      8      6      7      7      5      4      8      9                                                                                                                                                                                                 
 6hr Precip (in):  0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.02   0.03   0.29                                                                                                                                                                                                 
 AccumPrecip(in):  0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.02   0.05   0.34                                                                                                                                                                                                 
 6hr CPrecip (in)  0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00                                                                                                                                                                                                 
 Precip H20 (in):   0.5    0.3    0.1    0.1    0.2    0.2    0.3    0.3    0.3    0.3    0.5    0.3    0.2    0.3    0.3    0.5    0.5    0.6    0.7    0.8    1.0                                                                                                                                                                                                 
 Sfc LI      (C):  14.0    9.7   23.9   28.0   26.7   22.6   22.3   24.2   25.6   15.0   14.8   19.1   33.2   31.6   30.5   30.9   31.9   26.1   23.2   27.0   25.4                                                                                                                                                                                                 
 700mb VV(-ub/s):  -0.9   -1.3   -9.4   -0.1   -2.1   -2.6   -3.6   -3.7   -1.9   -1.4   -1.8    2.9   -1.3   -5.1   -1.4   -2.8    0.3   -1.5   -2.2   -0.2    1.1                                                                                                                                                                                                 
 Thk1000-500mb(m)5513.2 5481.4 5418.1 5388.7 5342.7 5315.5 5347.0 5372.0 5405.0 5434.1 5476.6 5452.7 5390.3 5399.5 5413.8 5406.3 5405.9 5418.9 5433.5 5452.8 5481.8                                                                                                                                                                                                 
 Thk1000-850mb(m)1347.6 1334.0 1289.2 1270.6 1273.8 1279.8 1292.1 1295.7 1299.3 1316.5 1330.4 1305.2 1265.2 1269.6 1280.9 1275.1 1277.3 1289.0 1302.8 1311.6 1320.5                                                                                                                                                                                                 
 Thk850-700mb(m):1568.6 1561.5 1524.6 1534.7 1518.6 1505.6 1509.8 1520.5 1530.5 1549.2 1551.1 1552.0 1536.7 1535.9 1538.7 1545.4 1543.9 1543.9 1544.5 1547.6 1553.5                                                                                                                                                                                                 
 Apparent Tmp(F):    38     57     26     21     21     40     30     24     23     50     41     33     13     29     25     22     19     37     34     23     25                                                                                                                                                                                                 
 PType:                                                                                                                                          SNOW FROZEN LIQUID                                                                                                                                                                                                 
                                                                                                                                                                    

Maybe Dr No will throw me a bone too  :lol:   ^_^

 

Looking at the 12 GFS Ens members on ewall...

 

10-11 of 12 have wintry precip in NC.  There are 6 members where the 850mb 0 deg doesn't get west of Charlotte

That's pretty impressive at this point   :weight_lift:

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Keep in mind too this parameter is essentially the water equivalent of precip that woudl fall as frozen or freezing precip, not just snow

THIS!!!

 

Guys, when looking at maps especially with a track like this, keep in mind the snow is not all snow...you'd have to look at soundings and get an idea so don't go to town on snow map outputs for this system...this is has a lot of ZR potential for Raleigh and central NC verbatim...ptype is tricky here east of the mountains/foothills.

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06z run went from rain in Raleigh to a decent look at snow on Thursday

12z run came out with huge ice storm in Raleigh and no to little snow on Thursday...

 

all in one run. Look at the outputs from coolwx on ptype with caution, it's just going to change at 18z. Hard system to forecast and don't put all your eggs in one basket right now on any solution (rain, zr, or snow)

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It's laughable how much the euro changes in one run. Hard to have any faith in this solution with no ensemble support, or support from any other model.

It's also laughable how much the GFS changes in one run, comparing the frames at the onset and after the system I'm just laughing..guidance has no clue right now.

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