jaxjagman

Just to add on above you can see a ridge build up into Korea and Japan,then a trough coming through.Teleconnections has a -ve AO/NAO,but the PNA is uncertain right now

I am getting interested in the storm into the end of the first week of Jan,if its real There has been some wild swings in the SOI lately around the 20th. 30 day Av. SOI 90 day Av. SOI Daily contribution Date Tahiti (hPa) Darwin (hPa) Daily Contribution 30 day Av. SOI 90 day Av. SOI 25 Dec 2020 1012.01 1007.35 4.88 15.20 9.50 24 Dec 2020 1010.81 1006.15 4.88 15.22 9.62 23 Dec 2020 1010.84 1004.25 14.89 15.16 9.75 22 Dec 2020 1012.31 1004.30 22.26 14.40 9.75 21 Dec 2020 1012.84 1005.05 21.12 13.41 9.58 20 Dec 2020 1011.45 1005.80 10.02 12.80 9.49 19 Dec 2020 1012.11 1002.50 30.57 13.03 9.54 18 Dec 2020 1012.34 1002.05 34.10 12.68 9.35 17 Dec 2020 1013.64 1003.35 34.10 12.22 9.08 16 Dec 2020 1013.54 1004.30 28.65 11.67 8.85 15 Dec 2020 1013.95 1006.40 19.88 11.09 8.73 Also look at the GWO today,which is out of the COD,but this could change drastically upcoming.But the GAAM drops during this time Not sure if this is severe or cold,.I believe tho this system is going to be much stronger than shown right now.JMO

Congrats to you guys in the east,we at least got a dusting and its cold,feels like Christmas for a change,Merry Christmas to all !!

meant to put this in ECMWF Deterministic FORECAST FOR: TRI LAT= 36.47 LON= -82.40 ELE= 1519 12Z DEC25 2 M 850 1000 FZING SFC SFC 3/6 SNCVR TMP TMP 850 HGT WIND PCP HR LIQ (C) (C) THK (FT) (KTS) TYPES (IN) (IN) FRI 12Z 25-DEC -8.8 -15.4 125 0 27005 FRI 15Z 25-DEC -8.3 -15.9 125 0 27009 FRI 18Z 25-DEC -6.2 -14.9 126 0 27010 FRI 21Z 25-DEC -6.1 -14.4 126 0 27010 0.01 SAT 00Z 26-DEC -8.1 -15.7 125 0 28007 0.02 SAT 03Z 26-DEC -10.3 -17.1 124 0 28006 0.00 SAT 06Z 26-DEC -11.7 -13.4 124 0 26005 0.00 SAT 09Z 26-DEC -13.0 -9.8 124 0 23004 0.00 SAT 12Z 26-DEC -10.7 -6.4 125 17 23004 0.00 SAT 15Z 26-DEC -6.4 -4.1 127 0 24004 0.00 SAT 18Z 26-DEC -0.6 -4.3 129 78 24005 0.00 SAT 21Z 26-DEC 0.6 -3.0 130 6870 24004 0.00 SUN 00Z 27-DEC -3.4 -0.5 130 6582 23004 0.00 SUN 03Z 27-DEC -3.6 0.4 130 6321 18002 0.00 SUN 06Z 27-DEC -6.2 2.0 131 6209 15002 0.00 SUN 09Z 27-DEC -5.5 4.0 131 6719 17002 0.00 SUN 12Z 27-DEC -5.9 5.3 131 6812 12002 0.00 SUN 15Z 27-DEC 1.1 5.9 132 6883 14001 0.00 SUN 18Z 27-DEC 9.9 6.6 134 7237 21003 0.00 SUN 21Z 27-DEC 8.4 7.0 135 7575 27001 0.00 MON 00Z 28-DEC 1.1 6.4 134 7416 17005 0.00 MON 03Z 28-DEC 0.2 5.4 133 6902 16005 0.00 MON 06Z 28-DEC -0.3 4.2 133 5804 23002 0.00 MON 09Z 28-DEC -1.0 3.7 133 5411 34002 0.00 MON 12Z 28-DEC 1.7 2.0 132 4934 19003 0.01 MON 15Z 28-DEC 3.0 1.5 132 4398 23004 0.01 MON 18Z 28-DEC 5.5 0.2 132 4787 24007 0.02 MON 21Z 28-DEC 5.5 -1.0 132 4523 24004 0.00 TUE 00Z 29-DEC 2.7 -1.7 132 2572 28005 0.01 TUE 03Z 29-DEC -0.3 -1.5 130 1506 31005 0.00 TUE 06Z 29-DEC -2.7 -1.5 129 434 26001 0.00 TUE 09Z 29-DEC -3.4 -1.7 129 319 03003 0.00 TUE 12Z 29-DEC -3.3 -1.7 128 307 03004 0.00 TUE 15Z 29-DEC -1.9 -0.7 129 5288 05003 0.00 TUE 18Z 29-DEC 2.8 0.3 130 5869 04002 0.00 TUE 21Z 29-DEC 3.7 1.7 131 6028 05001 0.00 WED 00Z 30-DEC -0.8 3.0 131 6632 05005 0.00 WED 03Z 30-DEC -1.7 4.7 132 7493 10004 0.00 WED 06Z 30-DEC -2.0 5.4 132 7426 09004 0.00 WED 09Z 30-DEC -1.8 6.2 131 8577 11005 0.00 WED 12Z 30-DEC -1.7 6.0 131 9387 12006 0.00 WED 15Z 30-DEC 2.3 5.0 131 9766 14006 0.00 WED 18Z 30-DEC 6.8 4.4 132 9476 14009 0.00 WED 21Z 30-DEC 6.7 6.7 133 9652 13008 0.00 THU 00Z 31-DEC 4.0 7.0 133 9655 12005 0.00 THU 03Z 31-DEC 4.0 6.5 133 10431 13007 0.00 THU 06Z 31-DEC 7.0 6.9 134 10769 15008 0.01 THU 09Z 31-DEC 8.0 6.6 134 10382 15011 0.01 THU 12Z 31-DEC 8.6 7.9 135 8792 14011 0.01 THU 18Z 31-DEC 12.7 9.8 137 8515 16013 0.11 FRI 00Z 01-JAN 3.1 0.0 131 5517 27006 1.24 FRI 06Z 01-JAN -0.8 -7.4 129 29 28008 0.41 FRI 12Z 01-JAN -5.4 -10.5 127 0 24004 0.00 FRI 18Z 01-JAN -1.4 -10.5 128 0 28008 0.00 SAT 00Z 02-JAN -3.5 -7.4 128 0 26005 0.00 SAT 06Z 02-JAN -6.7 -4.6 128 68 18003 0.00 SAT 12Z 02-JAN -7.2 1.3 129 5540 05002 0.00 SAT 18Z 02-JAN 3.1 2.8 132 5080 36002 0.00 SUN 00Z 03-JAN -0.3 3.0 132 4900 10002 0.00 SUN 06Z 03-JAN -2.5 -0.9 130 2114 15001 0.00 SUN 12Z 03-JAN -2.4 -3.0 130 650 13002 0.00 SUN 18Z 03-JAN 5.8 -1.9 131 1752 32001 0.00 MON 00Z 04-JAN 1.5 -0.5 132 2845 10001 0.00 MON 06Z 04-JAN -2.6 1.1 132 6059 11004 0.00 MON 12Z 04-JAN -2.6 0.6 131 5177 12004 0.00

Could be another nice system for you guys in the east,if its right,.hard to tell when the thermals crash but looks at least 4"

KW passed through recently has pulled some of the cool subsurface up to the surface in the east.

Trough went through east Asia yesterday.AO looks like it's gonna tank the next few days ,PNA is meh, +ve, NAO -ve, seems very possible we end up with another dynamical system once again upcoming towards the NEW year.Could be another trough towards the end of week one of Jan.,then the pattern could go zonal after that,but long range could always change.

Euro is going hog wild with a strong NINO into summer

Sea Surface Temperature and ENSO Outlook for January 2021 ~ June 2021 Issued: 21 Dec 2020 The APCC ENSO outlook suggests “La Nina”. The prevailing ENSO phase is expected to be negative. Negative SST anomalies along the equatorial Pacific are predicted during January-June 2021. Along with these spatial distributions, most of the dynamical coupled models predict negative Nino3.4 index which is expected to gradually increase from -1.3℃ to -0.4℃ through the whole forecast period. In summary, based on the running 3-month mean Nino3.4 index, the APCC ENSO outlook suggests La Nina conditions (~87% chance) with weak intensity are dominant during January-March 2021. The conditions are expected to gradually decrease and a 48% chance of neutral conditions is expected during April-June 2021 ENSO Alert Definition(Download) ENSO Alert status for January 2021 ~ June 2021(left) and history of monthly ENSO Alert(right). Time series of predicted monthly mean Nino3.4 index from individual models and the MME for January 2021 ~ June 2021(left). 3-month mean Nino3.4 index from individual models and the MME for January 2021 ~ March 2021(right). Probabilistic MME forecasts for the status and intensity based on 3-month mean Nino3.4 index for four overlapping 3-month mean periods(right) and first 3-month (January ~ March)(right).

Nothing more than a dusting for us at best,rain before hand and surface temps will crush those totals away for us.better than nothing

Probably wait and see,it does look like the heights are going to rise in East Asia the next few days followed by a cool down.The AO seems all over the place today towards the New Year today

Ouch,GFS in the long range went from cold to severe with the helicities over 600 around New Years night

I am kinda skeptic to what some of the seasonals show,only based on this chart.Some of the seasonals could be killing off NINA to fast.This chart shows in a way or another not counting 2019 there has always to an extent been some sort of resurgent NINA,based on the ONI.Each of the following two winters the ONI has never gone into a NINO but in fact stayed into more of a NINA pattern.Guess we will see down the road. JAMSTEC has a NINO into summer it seems.The subsurface lately has warmed in the east.Could be a possible KW in the east as well the next few days which could help upwell those cold waters

Think John mentioned this a couple days ago, this look more like a ANA-FRONT,Even the Euro shows some showalter so a rumble of thunder would seem to be a possibility along the front

Weak system in the long range,just looking at the teles it looks like the AO could possibly stay -ve into the new year with a weak but +PNA ECMWF Deterministic FORECAST FOR: BNA LAT= 36.12 LON= -86.68 ELE= 591 12Z DEC19 2 M 850 1000 FZING SFC SFC 6 HR SNCVR TMP TMP 850 HGT WIND PCP QPF LIQ (C) (C) THK (FT) (KTS) TYPES (IN) (IN) SAT 12Z 19-DEC 2.1 3.9 133 6348 18008 SAT 18Z 19-DEC 7.9 4.1 133 6720 18007 SUN 00Z 20-DEC 6.2 3.4 133 6534 18006 0.03 SUN 06Z 20-DEC 5.0 0.5 132 4793 19004 0.27 SUN 12Z 20-DEC 5.4 2.0 132 5253 19003 0.08 SUN 18Z 20-DEC 8.5 1.1 132 5906 26003 0.01 MON 00Z 21-DEC 4.9 0.9 132 4822 17002 0.01 MON 06Z 21-DEC 2.7 1.5 132 4656 24004 0.00 MON 12Z 21-DEC 2.1 2.1 132 5376 21005 0.00 MON 18Z 21-DEC 12.1 5.0 134 7742 23010 0.00 TUE 00Z 22-DEC 8.3 3.5 134 6766 26007 0.00 TUE 06Z 22-DEC 5.3 0.2 132 8016 29007 0.00 TUE 12Z 22-DEC 1.8 3.9 132 8424 32005 0.00 TUE 18Z 22-DEC 9.4 5.5 133 8554 08002 0.00 WED 00Z 23-DEC 6.5 6.9 134 9796 14004 0.00 WED 06Z 23-DEC 2.9 8.1 134 9213 15006 0.00 WED 12Z 23-DEC 4.1 8.3 134 9110 17007 0.00 WED 18Z 23-DEC 13.2 7.6 134 9746 17011 0.00 THU 00Z 24-DEC 9.7 5.8 134 9309 16010 0.03 THU 06Z 24-DEC 11.1 7.1 135 9337 16014 0.03 THU 12Z 24-DEC 11.0 7.9 135 8909 17012 0.46 THU 18Z 24-DEC 11.3 6.9 134 8095 25007 0.41 FRI 00Z 25-DEC 0.3 -2.2 129 102 32009 0.08 FRI 06Z 25-DEC -2.7 -9.0 127 0 32011 0.04 FRI 12Z 25-DEC -4.9 -10.5 125 0 30010 0.05 FRI 18Z 25-DEC -1.3 -9.1 126 0 28009 0.00 SAT 00Z 26-DEC -2.3 -7.9 128 0 27006 0.00 SAT 06Z 26-DEC -2.4 -5.2 129 0 27007 0.00 SAT 12Z 26-DEC -3.9 -3.7 129 0 28005 0.00 SAT 18Z 26-DEC 4.2 -3.3 130 1044 27003 0.00 SUN 00Z 27-DEC 0.9 -1.3 130 2251 22002 0.00 SUN 06Z 27-DEC -2.8 1.1 131 7408 17004 0.00 SUN 12Z 27-DEC -3.4 2.3 131 8326 15005 0.00 SUN 18Z 27-DEC 8.3 3.8 132 8083 17007 0.00 MON 00Z 28-DEC 4.7 4.4 133 8252 16008 0.00 MON 06Z 28-DEC 4.8 2.5 132 5652 17011 0.00 MON 12Z 28-DEC 3.8 1.6 132 5272 17011 0.21 MON 18Z 28-DEC 5.7 -1.9 131 2722 21008 0.12 TUE 00Z 29-DEC 3.4 -4.8 130 1549 26006 0.06 TUE 06Z 29-DEC 2.3 -6.3 129 1323 27005 0.02 TUE 12Z 29-DEC 1.6 -7.2 129 768 29005 0.01

I know it's banter but i just had to thinking of the Euro and weather,seems fitting with our last years during Christmas wanting snow and even cold

Late night it seems,you would wake up to a White X-Mas tho for a change,this alone is exciting

ECMWF Deterministic FORECAST FOR: TRI LAT= 36.47 LON= -82.40 ELE= 1519 12Z DEC19 2 M 850 1000 FZING SFC SFC 6 HR SNCVR TMP TMP 850 HGT WIND PCP QPF LIQ (C) (C) THK (FT) (KTS) TYPES (IN) (IN) SAT 12Z 19-DEC -3.5 1.2 131 6941 12002 SAT 18Z 19-DEC 7.7 2.1 132 5805 25002 SUN 00Z 20-DEC 0.5 2.8 132 6722 12003 0.00 SUN 06Z 20-DEC 1.6 1.8 132 4366 16004 0.00 SUN 12Z 20-DEC 1.3 -0.9 131 2515 16002 0.01 SUN 18Z 20-DEC 8.8 1.5 133 3717 28002 0.00 MON 00Z 21-DEC 4.8 2.3 133 4036 17002 0.00 MON 06Z 21-DEC 4.2 0.8 132 3354 26003 0.02 MON 12Z 21-DEC 1.9 -0.3 131 2564 25004 0.03 MON 18Z 21-DEC 7.3 1.2 132 3400 24007 0.00 TUE 00Z 22-DEC 6.6 1.3 133 3341 26011 0.00 TUE 06Z 22-DEC 3.8 -1.8 132 2219 26010 0.00 TUE 12Z 22-DEC 1.6 -5.4 130 1244 26006 0.00 TUE 18Z 22-DEC 6.4 -1.3 131 6428 30006 0.00 WED 00Z 23-DEC 2.3 2.6 132 7429 21004 0.00 WED 06Z 23-DEC -0.3 6.5 133 8186 11004 0.00 WED 12Z 23-DEC -0.3 7.3 134 7889 13003 0.00 WED 18Z 23-DEC 12.0 7.5 134 8501 16007 0.00 THU 00Z 24-DEC 6.3 6.9 133 8272 15008 0.00 THU 06Z 24-DEC 7.2 5.5 134 7642 13006 0.00 THU 12Z 24-DEC 8.6 7.2 135 8171 13007 0.05 THU 18Z 24-DEC 10.8 7.7 136 7439 16008 0.10 FRI 00Z 25-DEC 9.6 9.2 136 7811 18001 0.67 FRI 06Z 25-DEC 8.3 5.7 134 6277 30006 0.95 FRI 12Z 25-DEC 0.0 -6.1 129 64 29008 0.23 FRI 18Z 25-DEC -4.2 -11.5 127 0 27011 0.22 SAT 00Z 26-DEC -5.1 -12.3 127 0 27010 0.05 SAT 06Z 26-DEC -6.0 -13.1 126 0 26007 0.00 SAT 12Z 26-DEC -6.9 -11.2 126 0 24007 0.00 SAT 18Z 26-DEC -1.1 -10.4 128 0 28010 0.00 SUN 00Z 27-DEC -4.4 -8.5 128 0 28006 0.00 SUN 06Z 27-DEC -7.2 -7.0 128 0 20003 0.00 SUN 12Z 27-DEC 55 10002 0.00 SUN 18Z 27-DEC

CMWF Deterministic FORECAST FOR: CHA LAT= 35.03 LON= -85.20 ELE= 689 12Z DEC19 2 M 850 1000 FZING SFC SFC 6 HR SNCVR TMP TMP 850 HGT WIND PCP QPF LIQ (C) (C) THK (FT) (KTS) TYPES (IN) (IN) SAT 12Z 19-DEC -1.1 2.4 131 8118 18004 SAT 18Z 19-DEC 8.6 3.4 132 8373 17007 SUN 00Z 20-DEC 5.8 3.5 132 7059 16006 0.00 SUN 06Z 20-DEC 5.1 1.6 132 5185 17006 0.00 SUN 12Z 20-DEC 4.5 2.8 133 5772 16003 0.06 SUN 18Z 20-DEC 9.0 3.0 133 5844 21004 0.01 MON 00Z 21-DEC 7.7 2.1 133 5670 25002 0.01 MON 06Z 21-DEC 5.4 1.9 133 4723 28004 0.00 MON 12Z 21-DEC 3.1 2.2 132 4972 26003 0.00 MON 18Z 21-DEC 10.2 4.3 133 8084 24008 0.00 TUE 00Z 22-DEC 7.9 4.9 134 7788 25006 0.00 TUE 06Z 22-DEC 4.6 2.3 133 9342 26006 0.00 TUE 12Z 22-DEC 3.0 3.9 132 9222 34005 0.00 TUE 18Z 22-DEC 10.1 6.2 133 10070 01004 0.00 WED 00Z 23-DEC 5.2 7.6 134 9940 07003 0.00 WED 06Z 23-DEC 1.6 9.2 134 9857 08002 0.00 WED 12Z 23-DEC 3.6 7.9 133 9144 16006 0.00 WED 18Z 23-DEC 12.4 7.0 134 9222 16010 0.00 THU 00Z 24-DEC 10.0 5.5 134 9307 16009 0.00 THU 06Z 24-DEC 9.5 5.2 134 8780 16009 0.04 THU 12Z 24-DEC 11.3 7.1 135 9741 16014 0.12 THU 18Z 24-DEC 12.8 8.6 136 8619 17007 0.75 FRI 00Z 25-DEC 8.0 7.2 134 6928 30008 0.25 FRI 06Z 25-DEC -0.4 -5.7 128 16 30008 0.10 FRI 12Z 25-DEC -3.2 -11.6 127 0 29010 0.11 FRI 18Z 25-DEC -1.2 -11.0 127 0 28010 0.04 SAT 00Z 26-DEC -2.3 -8.0 128 0 27007 0.00 SAT 06Z 26-DEC -4.1 -7.2 128 0 24005 0.00 SAT 12Z 26-DEC -4.1 -3.3 129 0 26005 0.00 SAT 18Z 26-DEC 4.9 -3.2 130 1245 29004 0.00 SUN 00Z 27-DEC 1.4 -1.9 131 2081 29005 0.00

Nice hit for TYS ECMWF Deterministic FORECAST FOR: TYS LAT= 35.82 LON= -83.98 ELE= 981 12Z DEC19 2 M 850 1000 FZING SFC SFC 6 HR SNCVR TMP TMP 850 HGT WIND PCP QPF LIQ (C) (C) THK (FT) (KTS) TYPES (IN) (IN) SAT 12Z 19-DEC -2.0 1.8 131 7381 15004 SAT 18Z 19-DEC 8.2 2.7 132 7872 23004 SUN 00Z 20-DEC 3.3 2.8 132 6826 13004 0.00 SUN 06Z 20-DEC 3.6 1.8 132 4948 17004 0.00 SUN 12Z 20-DEC 3.1 0.5 132 3989 13004 0.05 SUN 18Z 20-DEC 7.4 2.0 133 5082 23002 0.01 MON 00Z 21-DEC 5.9 2.0 133 4402 27003 0.00 MON 06Z 21-DEC 5.7 0.3 132 3541 28003 0.01 MON 12Z 21-DEC 2.7 1.1 132 3836 23004 0.00 MON 18Z 21-DEC 9.7 2.5 133 5786 24010 0.00 TUE 00Z 22-DEC 7.4 2.1 133 4590 24009 0.00 TUE 06Z 22-DEC 4.2 -0.4 132 3409 23006 0.00 TUE 12Z 22-DEC 1.2 -1.4 131 7591 26004 0.00 TUE 18Z 22-DEC 8.2 3.0 132 8209 36003 0.00 WED 00Z 23-DEC 4.1 5.4 133 9605 20002 0.00 WED 06Z 23-DEC 1.1 8.2 134 9096 09004 0.00 WED 12Z 23-DEC 1.2 7.2 133 8778 13004 0.00 WED 18Z 23-DEC 12.3 7.4 134 8720 17004 0.00 THU 00Z 24-DEC 8.2 6.7 134 9240 18006 0.00 THU 06Z 24-DEC 7.5 5.7 134 8984 15005 0.02 THU 12Z 24-DEC 10.8 7.1 135 9321 16005 0.08 THU 18Z 24-DEC 12.3 9.7 136 8951 16011 0.56 FRI 00Z 25-DEC 10.5 7.9 136 6745 23003 0.52 FRI 06Z 25-DEC 2.0 -2.2 130 806 28005 0.31 FRI 12Z 25-DEC -2.8 -9.9 127 0 28007 0.25 FRI 18Z 25-DEC -4.4 -12.8 126 0 27009 0.21 SAT 00Z 26-DEC -4.4 -11.2 127 0 26007 0.00 SAT 06Z 26-DEC -6.1 -9.9 127 0 22006 0.00 SAT 12Z 26-DEC -6.5 -6.9 127 0 22006 0.00 SAT 18Z 26-DEC 0.6 -6.7 129 298 26004 0.00 SUN 00Z 27-DEC

Looks like the FZ heights crash fast,maybe a couple inches here. ECMWF Deterministic FORECAST FOR: BNA LAT= 36.12 LON= -86.68 ELE= 591 12Z DEC19 2 M 850 1000 FZING SFC SFC 6 HR SNCVR TMP TMP 850 HGT WIND PCP QPF LIQ (C) (C) THK (FT) (KTS) TYPES (IN) (IN) SAT 12Z 19-DEC 2.1 3.9 133 6348 18008 SAT 18Z 19-DEC 7.9 4.1 133 6720 18007 SUN 00Z 20-DEC 6.2 3.4 133 6534 18006 0.03 SUN 06Z 20-DEC 5.0 0.5 132 4793 19004 0.27 SUN 12Z 20-DEC 5.4 2.0 132 5253 19003 0.08 SUN 18Z 20-DEC 8.5 1.1 132 5906 26003 0.01 MON 00Z 21-DEC 4.9 0.9 132 4822 17002 0.01 MON 06Z 21-DEC 2.7 1.5 132 4656 24004 0.00 MON 12Z 21-DEC 2.1 2.1 132 5376 21005 0.00 MON 18Z 21-DEC 12.1 5.0 134 7742 23010 0.00 TUE 00Z 22-DEC 8.3 3.5 134 6766 26007 0.00 TUE 06Z 22-DEC 5.3 0.2 132 8016 29007 0.00 TUE 12Z 22-DEC 1.8 3.9 132 8424 32005 0.00 TUE 18Z 22-DEC 9.4 5.5 133 8554 08002 0.00 WED 00Z 23-DEC 6.5 6.9 134 9796 14004 0.00 WED 06Z 23-DEC 2.9 8.1 134 9213 15006 0.00 WED 12Z 23-DEC 4.1 8.3 134 9110 17007 0.00 WED 18Z 23-DEC 13.2 7.6 134 9746 17011 0.00 THU 00Z 24-DEC 9.7 5.8 134 9309 16010 0.03 THU 06Z 24-DEC 11.1 7.1 135 9337 16014 0.03 THU 12Z 24-DEC 11.0 7.9 135 8909 17012 0.46 THU 18Z 24-DEC 11.3 6.9 134 8095 25007 0.41 FRI 00Z 25-DEC 0.3 -2.2 129 102 32009 0.08 FRI 06Z 25-DEC -2.7 -9.0 127 0 32011 0.04 FRI 12Z 25-DEC -4.9 -10.5 125 0 30010 0.05 FRI 18Z 25-DEC -1.3 -9.1 126 0 28009 0.00 SAT 00Z 26-DEC -2.3 -7.9 128 0 27006 0.00 SAT 06Z 26-DEC -2.4 -5.2 129 0 27007 0.00

No doubt GFS 0.5 Degree FORECAST FOR: BNA LAT= 36.12 LON= -86.68 ELE= 591 12Z DEC19 * - APPROXIMATED SFC SFC 2 M SFC SFC SFC 6 HR TOTAL MXT MNT TMP DEW WIND PCP QPF CLOUD (F) (F) (F) (F) (KTS) TYPES (IN) (PCT) SAT 12Z 19-DEC 34.2 27.2 18006 SAT 18Z 19-DEC 43.2 34.0 42.9 31.8 19008 0.00 100 SUN 00Z 20-DEC 45.0 41.9 41.9 36.1 20003 RA 0.02 100 SUN 06Z 20-DEC 42.6 41.2 41.8 39.7 20006 RA 0.18 100 SUN 12Z 20-DEC 42.2 41.5 42.0 40.7 19004 0.03 99 SUN 18Z 20-DEC 48.5 42.0 48.4 44.1 24003 0.00 95 MON 00Z 21-DEC 48.9 42.1 42.1 40.1 23002 0.00 62 MON 06Z 21-DEC 42.1 38.3 38.3 36.9 23005 0.00 9 MON 12Z 21-DEC 39.3 37.4 38.7 37.5 23007 0.00 29 MON 18Z 21-DEC 51.8 38.1 51.8 36.3 25013 0.00 25 TUE 00Z 22-DEC 52.5 44.8 44.8 38.7 25007 0.00 0 TUE 06Z 22-DEC 44.7 40.2 40.2 32.2 28005 0.00 0 TUE 12Z 22-DEC 40.1 35.8 35.8 28.3 32004 0.00 0 TUE 18Z 22-DEC 47.3 35.1 47.3 29.7 02002 0.00 0 WED 00Z 23-DEC 49.1 40.8 40.8 30.8 13004 0.00 0 WED 06Z 23-DEC 40.8 38.4 38.7 31.0 17006 0.00 40 WED 12Z 23-DEC 41.1 38.7 41.1 31.0 17012 0.00 64 WED 18Z 23-DEC 53.2 41.1 53.2 38.0 19017 0.00 48 THU 00Z 24-DEC 54.7 50.5 50.5 43.9 18014 RA 0.05 82 THU 06Z 24-DEC 51.0 35.5 35.6 34.4 32008 SN 0.80 100 THU 12Z 24-DEC 35.7 28.5 29.0 23.0 29009 0.21 95 THU 18Z 24-DEC 30.6 26.3 30.3 17.5 28014 0.00 38 FRI 00Z 25-DEC 30.4 22.9 22.9 11.7 28009 0.01 88 FRI 06Z 25-DEC 23.0 17.7 17.7 5.7 28011 0.00 93 FRI 12Z 25-DEC 17.8 16.2 16.8 3.8 28009 0.00 91 FRI 18Z 25-DEC 25.8 16.5 25.8 7.0 27007 0.00 5 SAT 00Z 26-DEC 29.2 24.5 25.0 13.6 22005 0.00 0 SAT 06Z 26-DEC 25.4 24.3 25.0 12.0 21006 0.00 10 SAT 12Z 26-DEC 25.3 24.3 25.1 13.3 20006 0.00 33 SAT 18Z 26-DEC 39.0 24.7 39.0 22.4 22007 0.00 81 SUN 00Z 27-DEC 39.9 34.0 34.0 27.7 16005 0.00 100 SUN 06Z 27-DEC 34.2 33.0 33.3 25.1 18003 0.00 100 SUN 12Z 27-DEC 33.6 32.0 32.5 26.9 11005 0.00 98 SUN 18Z 27-DEC 40.3 33.0 38.7 35.1 15006 RA 0.02 100 MON 00Z 28-DEC 38.7 33.5 33.8 33.3 08004 RA 0.24 100 MON 06Z 28-DEC 35.3 33.7 35.3 34.7 36004 RA 0.11 100 MON 12Z 28-DEC 37.8 35.3 37.8 36.9 31007 RA 0.09 100 MON 18Z 28-DEC 39.6 37.3 38.1 35.1 30011 0.01 100 TUE 00Z 29-DEC 38.3 31.2 31.2 27.8 30011 SN 0.01 99 TUE 06Z 29-DEC 31.1 24.3 24.3 16.7 30008 0.00 71 TUE 12Z 29-DEC 24.2 22.1 22.1 13.0 31006 0.00 0 TUE 18Z 29-DEC 33.1 22.0 33.1 10.0 30006 0.00 0 WED 00Z 30-DEC 35.2 29.2 29.4 11.8 05000 0.00 25 WED 06Z 30-DEC 30.1 28.1 29.2 14.5 16002 0.00 68 WED 12Z 30-DEC 30.5 28.0 28.8 18.5 14006 0.01 99 WED 18Z 30-DEC 33.6 28.9 31.8 26.9 18008 IP 0.10 100 THU 00Z 31-DEC 33.8 30.4 33.8 33.0 17009 RA 0.16 100 THU 06Z 31-DEC 36.6 33.8 36.5 36.4 19006 0.01 100 THU 12Z 31-DEC 37.3 36.1 36.4 36.2 30005 0.01 100 THU 18Z 31-DEC 36.4 34.1 35.7 32.9 30007 SN 0.00 100 FRI 00Z 01-JAN 35.9 31.4 31.4 27.7 31006 SN 0.00 100 FRI 06Z 01-JAN 31.4 25.2 25.2 22.2 31002 0.00 57 FRI 12Z 01-JAN 25.2 22.9 23.3 20.8 13003 0.00 6 FRI 18Z 01-JAN 35.2 23.8 35.2 26.8 14005 0.00 100 SAT 00Z 02-JAN 37.3 34.0 34.6 29.1 15008 0.00 100 SAT 06Z 02-JAN 36.8 34.5 36.6 29.9 17010 RA 0.01 100 SAT 12Z 02-JAN 36.9 34.2 34.9 33.8 18010 RA 0.40 100 SAT 18Z 02-JAN 37.2 34.3 36.6 35.7 24004 RA 0.22 100 SUN 00Z 03-JAN 37.4 29.3 29.3 26.7 34004 0.01 86 SUN 06Z 03-JAN 29.5 24.4 24.5 20.8 34004 0.00 16 SUN 12Z 03-JAN 24.7 22.4 23.2 18.4 00006 0.00 49 SUN 18Z 03-JAN 25.9 22.3 25.9 17.1 00007 0.00 98 MON 00Z 04-JAN 27.3 20.9 20.9 13.7 00007 0.00 66 MON 06Z 04-JAN 20.9 15.6 15.6 2.5 36007 0.00 42 MON 12Z 04-JAN 15.5 12.1 12.1 0.2 00006 0.00 79

Definite troughs coming out of east East Asia,in the mid to long range,just got to figure out the teleconnections but sure seems to me it could be a decent cold snap upcoming