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December 21-22nd Winter Storm Part 3


Chicago Storm

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Adding the ice from wave 1 to the ice from wave 2 and the EURO checks in with about 2" of ice for Toronto.

Over/Under a Winter Storm Watch is issued with the 330pm package from Environment Canada? I know the event would still be 48 hours away but with the waves starting tonight and only brief breaks after it starts before the main storm I wonder if they want to highlight the potential even more. If its not issued this afternoon I would have to think they issue it tomorrow for sure. 

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Over/Under a Winter Storm Watch is issued with the 330pm package from Environment Canada? I know the event would still be 48 hours away but with the waves starting tonight and only brief breaks after it starts before the main storm I wonder if they want to highlight the potential even more. If its not issued this afternoon I would have to think they issue it tomorrow for sure. 

Highly doubt it

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Over/Under a Winter Storm Watch is issued with the 330pm package from Environment Canada? I know the event would still be 48 hours away but with the waves starting tonight and only brief breaks after it starts before the main storm I wonder if they want to highlight the potential even more. If its not issued this afternoon I would have to think they issue it tomorrow for sure. 

 

Watch should definitely come out by tomorrow morning if I was Environment Canada. Need to get the word out before the weekend and people start relaxing, engaging in family events, travelling etc.

 

EURO also managed to get us above freezing per the text data TorBliz posted but the damage is likely done by then. Unless a good deal of that QPF goes towards PL we're in a bit of trouble.

 

 

Wondering about the warm up. Looks like at least half of the precip falls above 0C at the surface. Hard to tell from text data how climbing temps may affect ZR accretion during the previous 6hr peiod, need some inter-hour data. I don't have much experiencing forecasting ice (as intriguing as I find it)... so many factors in play.

 

From what I'm seeing though if you blend the EURO (wetter, milder, more RA), GFS and GEM (drier but colder temps, more PL)... somewhere in the middle we've got big ice.

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Watch should definitely come out by tomorrow morning if I was Environment Canada. Need to get the word out before the weekend and people start relaxing, engaging in family events, travelling etc.

 

 

Wondering about the warm up. Looks like at least half of the precip falls above 0C at the surface. Hard to tell from text data how climbing temps may affect ZR accretion during the previous 6hr peiod, need some inter-hour data. I don't have much experiencing forecasting ice (as intriguing as I find it)... so many factors in play.

 

From what I'm seeing though if you blend the EURO (wetter, milder, more RA), GFS and GEM (drier but colder temps, more PL)... somewhere in the middle we've got big ice.

EURO is not more RA.

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Thanks Snowstorms. Try to make him read the text better.

 

I'm sensing a burn here? 

 

You really think that entire 0.88" of precip will fall as ice? You're entitled to your opinion and I'm always open to learning more about how everyone forecasts but an explanation of your thinking instead of hurling insults would be welcome.

 

ECMWF Deterministic FORECAST FOR: YYZ    LAT=  43.67 LON=  -79.63 ELE=   568

                                            12Z DEC19

                 2 M     850     SFC     SFC     700    6 HR     500    1000 

                 TMP     TMP     PRS     RHU     RHU     QPF     HGT     500 

                 ©     ©    (MB)    (PCT)   (PCT)   (IN)    (DM)     THK 

SAT 18Z 21-DEC  -1.2     1.3    1016      85      76    0.01     557     545    

SUN 00Z 22-DEC  -1.5     3.2    1015      93      99    0.17     560     547    

SUN 06Z 22-DEC  -1.0     3.3    1007      94     100    0.63     558     552    

SUN12Z 22-DEC  1.0    6.2   1002     93     24    0.88    555    554   

SUN 18Z 22-DEC   2.7     5.1    1001      94      24    0.05     550     549

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I'm sensing a burn here?

You really think that entire 0.88" of precip will fall as ice? You're entitled to your opinion and I'm always open to learning more about how everyone forecasts but an explanation of your thinking instead of hurling insults would be welcome.

ECMWF Deterministic FORECAST FOR: YYZ LAT= 43.67 LON= -79.63 ELE= 568

12Z DEC19

2 M 850 SFC SFC 700 6 HR 500 1000

TMP TMP PRS RHU RHU QPF HGT 500

© © (MB) (PCT) (PCT) (IN) (DM) THK

SAT 18Z 21-DEC -1.2 1.3 1016 85 76 0.01 557 545

SUN 00Z 22-DEC -1.5 3.2 1015 93 99 0.17 560 547

SUN 06Z 22-DEC -1.0 3.3 1007 94 100 0.63 558 552

SUN 12Z 22-DEC 1.0 6.2 1002 93 24 0.88 555 554

SUN 18Z 22-DEC 2.7 5.1 1001 94 24 0.05 550 549

I do think it will fall as ice. Why do you not want to believe that?

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