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soperman
29 January 2019 12:35:02

It seems to me that the whole feature is moving incredibly slow which is at odds with the revised warnings.


Intensity lessening atm - not increasing according to Meteoradar

picturesareme
29 January 2019 12:50:47
Certainly not producing snow up here in the north east despite the air temp not over 1C. Just cold rain with the odd small flake mixed in at times.


overland
29 January 2019 13:03:57

It's been raining all morning in Swansea, but it's now turning to snow. Wasn't expecting this but it's been heavy rain and not much wind, so assume it's evaporative cooling? I'm close to sea level so it perhaps bodes well for other areas.


Edit: slightly higher parts (50m plus) reporting the classic huge flakes you get in marginal situations


Mumbles, Swansea. 80m asl
Joe Bloggs
29 January 2019 13:06:09


 


 


As for Thursday's PPN and the northern extent:


 


Arpege - Wrexham to Stoke to Nottingham to Grantham


GFS - Lancaster to York


Icon - initially Chester to Sheffield to Lincoln, but then pivots to spread snow to Manchester and Yorkshire


 


I need the GFS solution to be correct!!


 


Originally Posted by: Saint Snow 


You’re looking at Thursday but I’m still pinning my hopes on tonight and tomorrow morning.


EURO4 and GFS have consistently modelled a small but intense streamer pushing through parts of Merseyside, Manchester and the Peak District from about 3am, peaking about 6am, and potentially lasting into mid morning. 


Your commute could be interesting, or, knowing how fickle these events can be, it could be extremely boring. 😃 I’m using this as a right royal test for this model. GFS (para) too. 




http://www.wetterzentrale.de/maps/GFSPARAUK06_27_43.png


 



Manchester City Centre, 31m ASL

Gandalf The White
29 January 2019 13:17:42


Yes as anticipated this morning the MetO automated forecast for my location has downgraded my rain-to-snow event to a rain-to-sleet event.


 


Originally Posted by: RobN 


The automated forecast for here says sleet between 7pm and 8pm turning to moderate snow sometime after 9pm, tapering off sometime after 1am.  It may be just that you're a 100+ metres lower.


Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


snow 2004
29 January 2019 13:25:20
It's been alternating between light sleet and snow for a couple of hours here. Problem has been lack of intensity which has been frustrating to watch on the radar.


Seems to be a more sustained and heavier switch to snow now. Temp on the way down and hopefully the snow line too which is currently just above 200m.
Glossop Derbyshire, 200m asl
Quantum
  • Quantum
  • Advanced Member Topic Starter
29 January 2019 13:32:20


 


Interesting you say that Q  and I hope your right because I just read the updated met warning and it reads as follows:-


 


Updated:


10:49 on Tue 29 Jan 2019 GMT


Reason for update

The start time of the warning has been brought forward to cater for some snowfall during peak travel times Tuesday evening and the expected amounts of snow have been reduced.


 


EDIT: Sorry didn't realise it had already been posted above.


Originally Posted by: Jonesy 


I think its still likely to be a rain->snow event for most but cold air is going to undercut the front so I fully expect the rain->snow transition to shorten as the band moves SE.


Twitter: @QuantumOverlord (general), @MedicaneWatch (medicane/TC stuff)
2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
Rob K
29 January 2019 13:57:37

I usually find the @LondonSnowWatch account on Twitter to be quite close to the mark with snow risk. East is best today:


 






 


Yateley, NE Hampshire, 73m asl
"But who wants to be foretold the weather? It is bad enough when it comes, without our having the misery of knowing about it beforehand." — Jerome K. Jerome
Quantum
  • Quantum
  • Advanced Member Topic Starter
29 January 2019 14:10:17


This is the dividing line between the cold and milder air. Behind it colder air is undercutting and I would expect the precip to be mostly falling as snow (except in the SW, coasts, lighter bits e.c.t.). Ahead mostly rain at this stage.


Twitter: @QuantumOverlord (general), @MedicaneWatch (medicane/TC stuff)
2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
xioni2
29 January 2019 14:13:37

I still expect ~10cm on the Downs tonight roughly above 150m.

warrenb
29 January 2019 14:17:07
Now raining from the bit that has come up from the south in front of the main band. 4.5c with a dew of 2c
Quantum
  • Quantum
  • Advanced Member Topic Starter
29 January 2019 14:18:12

This is the problem with cold occlusions. In fact, ironically, any front with 'cold' in it sucks when it comes to snow potential.


And this is one of the better ones!


Nevertheless it does seem most places are still going to see snow today. Going to be very wet though.


 


Twitter: @QuantumOverlord (general), @MedicaneWatch (medicane/TC stuff)
2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
Quantum
  • Quantum
  • Advanced Member Topic Starter
29 January 2019 14:34:51


Love drawing fronts on such an unusual synoptic chart.


Twitter: @QuantumOverlord (general), @MedicaneWatch (medicane/TC stuff)
2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
nsrobins
29 January 2019 14:38:52
If only we had some decent cold air in place or a high to the north instead of this persistent low.
(Apologies for my if only moment)
Thurs pm looks much better for snow chances for a larger area.
Neil
Fareham, Hampshire 28m ASL (near estuary)
Stormchaser, Member TORRO
picturesareme
29 January 2019 14:50:20



This is the dividing line between the cold and milder air. Behind it colder air is undercutting and I would expect the precip to be mostly falling as snow (except in the SW, coasts, lighter bits e.c.t.). Ahead mostly rain at this stage.


Originally Posted by: Quantum 


Rain behind your line in northeast England at approx 140m... Some earlier sleet in heavier bursts about an hour ago  

Jim-55
29 January 2019 14:52:43

Well for what it's worth there's a bit of sleet mixed with the rain here, not a lot but it's slowly changing. My guess is this band of precipitation will be mainly rain for here but may turn to snow for you guys further east. temperature is currently 3.7C which has dropped from 5.9c at 12:30pm. Good luck.


 


Previously JimC. joined back then in 2009. Frome, N/E Somerset, 125mtrs asl.
Maunder Minimum
29 January 2019 14:52:56


 


Rain behind your line in northeast England at approx 140m... Some earlier sleet in heavier bursts about an hour ago  


Originally Posted by: picturesareme 


Only miserable rubbish cold rain here in Worcestershire so far.


But I never expected today's miserable affair to deliver anything.


Thursday into Friday is the only hope and then it won't last more than a day or two if the ECM has its way.


 


New world order coming.
picturesareme
29 January 2019 15:05:52


 


Only miserable rubbish cold rain here in Worcestershire so far.


But I never expected today's miserable affair to deliver anything.


Thursday into Friday is the only hope and then it won't last more than a day or two if the ECM has its way.


 


Originally Posted by: Maunder Minimum 


A brief heavier burst at the moment is bringing with more sleet but I think the front is soon to clear so I've given up now on seeing snow cover whilst up here.

Jeff
  • Jeff
  • Advanced Member
29 January 2019 15:12:56
Raining heavily here in mid-Sussex. Now 3.5c after a high of 4.3c at 12:53pm. DP of 2c. Some sleet in the heavier bursts. The conditions look well set for something more than predicted after dark.

Jeff
On the East/West Sussex Border
70m ASL
Tim A
29 January 2019 15:15:24
Rain turned to snow but too warm/light to settle at the moment.
1.5c

Tim
NW Leeds
187m asl

 My PWS 
Russwirral
29 January 2019 15:36:54
RE Thursday

ICON 12z pushes the front further north which is good IMBY - however the pennines begin to create a rain shadow effect. Still more time to resolve this.

Fingers crossed.
Jim-55
29 January 2019 15:52:16

Rain beginning to turn to snow, Still a fair bit of rain but we've some chunky flakes coming down. Temp now 2.7C.


Edit, now nearly all snow.


Previously JimC. joined back then in 2009. Frome, N/E Somerset, 125mtrs asl.
ARTzeman
29 January 2019 15:54:10

The SNOW doth fall here in Peasedown St John. 






Some people walk in the rain.
Others just get wet.
I Just Blow my horn or trumpet
LeedsLad123
29 January 2019 15:54:11
Not snow related but I note the Met Office are forecasting an ice day tomorrow here.
Whitkirk, Leeds - 85m ASL.
JACKO4EVER
29 January 2019 15:55:53

Steady rain here now, the temperature shows no signs of dropping though 4.2c


sorry mis read the gauge- it is dropping now 3.3c

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