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Potential major winter storm - Feb 24-27


snowstormcanuck

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Yeah I saw that too, looked similar but definitely phased it. I want a big phase to prove to you the GL aren't in a synoptic desert. :whistle:

 

lol...I don't think I said the great lakes were a "synoptic" desert. And if I did, I misspoke. They're a desert for monster synoptic storms akin to what you see on the EC. And really just the eastern Lakes in that regard. Western Lakes do better with the bombs.

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Is it fair to say the system can only move east so much before it hits the Appalachian mountains... Good to see something in the region to track. It will be hard to watch miss the region to the west yet another time this season, when we are in rain and 36°f.

 

The mountains wouldn't be doing the blocking. The blocking high would be. The great lakes is the battle zone.

 

ecmwf-ens_z500a_us_6.png

 

gfs-ens_z500a_us_19.png

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since the nuke runs that started at 18z yesterday there has been a slow trend back southeast. Will it continue or reverse again? That euro run was odd. Really strong storm in the south but I think the reason it's not cutting more north is because the ULL closes off which causes it to head more east first. If that upper low doesn't cut off, that thing would probably cut to central IN.

With the op euro's tendency to close off early this is a good point, also the Para Euro from last night was similar to the 18/6z gfs.
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Pushing it...unless the peak warmth is just before the best juice gets here. But as you said, no need to dissect the details at this point. The snowfall map seems to suggest we'll be ok though.

 

Heres the text data. Reminds me of 2/26/13.

 

ECMWF Deterministic FORECAST FOR: YYZ    LAT=  43.67 LON=  -79.63 ELE=   568
 
                                            12Z FEB20
                 2 M     850     SFC     SFC     700    6 HR     500    1000 
                 TMP     TMP     PRS     RHU     RHU     QPF     HGT     500 
                 ©     ©    (MB)    (PCT)   (PCT)   (IN)    (DM)     THK 
 
WED 12Z 24-FEB  -3.1    -3.7    1024      74      24    0.00     552     534    
WED 18Z 24-FEB   3.1    -2.4    1020      76      75    0.00     554     538    
THU 00Z 25-FEB   0.5    -1.2    1013      97      96    0.07     552     541    
THU 06Z 25-FEB   0.8    -2.5    1000      97     100    0.42     544     543    
THU 12Z 25-FEB   0.8    -2.2     988      97      95    0.57     532     542    
THU 18Z 25-FEB   1.5    -4.1     985      88      98    0.14     526     539    
FRI 00Z 26-FEB  -0.7    -8.4     990      80      96    0.05     524     532    
FRI 06Z 26-FEB  -2.1   -10.8     993      79      92    0.04     520     525    
FRI 12Z 26-FEB  -6.1   -13.9    1000      75      94    0.04     521     521    
FRI 18Z 26-FEB  -5.6   -14.5    1007      59      40    0.01     525     519    
SAT 00Z 27-FEB  -7.2   -16.0    1013      67      17    0.00     528     518 
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Heres the text data. Reminds me of 2/26/13.

 

ECMWF Deterministic FORECAST FOR: YYZ    LAT=  43.67 LON=  -79.63 ELE=   568
 
                                            12Z FEB20
                 2 M     850     SFC     SFC     700    6 HR     500    1000 
                 TMP     TMP     PRS     RHU     RHU     QPF     HGT     500 
                 ©     ©    (MB)    (PCT)   (PCT)   (IN)    (DM)     THK 
 
WED 12Z 24-FEB  -3.1    -3.7    1024      74      24    0.00     552     534    
WED 18Z 24-FEB   3.1    -2.4    1020      76      75    0.00     554     538    
THU 00Z 25-FEB   0.5    -1.2    1013      97      96    0.07     552     541    
THU 06Z 25-FEB   0.8    -2.5    1000      97     100    0.42     544     543    
THU 12Z 25-FEB   0.8    -2.2     988      97      95    0.57     532     542    
THU 18Z 25-FEB   1.5    -4.1     985      88      98    0.14     526     539    
FRI 00Z 26-FEB  -0.7    -8.4     990      80      96    0.05     524     532    
FRI 06Z 26-FEB  -2.1   -10.8     993      79      92    0.04     520     525    
FRI 12Z 26-FEB  -6.1   -13.9    1000      75      94    0.04     521     521    
FRI 18Z 26-FEB  -5.6   -14.5    1007      59      40    0.01     525     519    
SAT 00Z 27-FEB  -7.2   -16.0    1013      67      17    0.00     528     518 

 

 

Oh yeah, we could get plastered at 0.8c. Assuming there's no sneaky warm layers aloft.

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Overall the last few days have seen a very big NW trend. It went from jackpot in SNE to a jackpot in Michigan.

This just got a lot more interesting for Toledo and Dayton, as of the 00z GFS run. It has 980mb in Pittsburgh, near blizzard in Toledo. The way things have been going, we won't know what's going to happen until 6 hours before it starts snowing!

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lol...I don't think I said the great lakes were a "synoptic" dessert. And if I did, I misspoke. They're a dessert for monster synoptic storms akin to what you see on the EC. And really just the eastern Lakes in that regard. Western Lakes do better with the bombs.

I'd like the synoptic dessert for $5.99, rain with a topping of snow, with a topping of glaze.

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lol...can't believe I did that. Twice too.

When I lived in Toledo, I thought that it stunk for major snow events but it was OK for 3-6" events. Mid-Michigan to Wisconsin and even Chicago get better synoptic snow storms (with LES combo) over 8". Cleveland gets lake effect snow, South Bend gets lake effect snow. Perhaps both Cleveland and South Bend have had a few larger synoptic events in history than Toledo. On the other hand, the Cleveland people on this board feel they have missed a lot of potential synoptic events recentlly.

 

I always thought that New York state into most of New England were ideally set up for frequent synoptic snows. After browsing the Upstate NY/PA subforum, I have learned that the ROC and BUF people consider themselves to be in an area of few large synoptic snow storms, but frequent LES. I made a post, asking why ROC on average gets 100" of snow per year if they can't get good synoptic storms and they don't get super-LES.  BUF airport can get super lake effect snow events, but ROC airport is not set up for a super LES band. Whatever the case, both ROC and BUF get 2.5x Toledo's annual snow, so they are in a different league.

 

It looks like Hamilton to Toronto gets 40-50" (100cm-125cm), but the Toronto people feel rather unlucky on synoptic storms recently.

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This just got a lot more interesting for Toledo and Dayton, as of the 00z GFS run. It has 980mb in Pittsburgh, near blizzard in Toledo. The way things have been going, we won't know what's going to happen until 6 hours before it starts snowing!

The track is looking good and timing could be favorable. Appearing to be a nighttime event which could help out with temps. Awaiting to see ILN's newest AFD soon.

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When I lived in Toledo, I thought that it stunk for major snow events but it was OK for 3-6" events. Mid-Michigan to Wisconsin and even Chicago get better synoptic snow storms (with LES combo) over 8". Cleveland gets lake effect snow, South Bend gets lake effect snow. Perhaps both Cleveland and South Bend have had a few larger synoptic events in history than Toledo. On the other hand, the Cleveland people on this board feel they have missed a lot of potential synoptic events recentlly.

 

I always thought that New York state into most of New England were ideally set up for frequent synoptic snows. After browsing the Upstate NY/PA subforum, I have learned that the ROC and BUF people consider themselves to be in an area of few large synoptic snow storms, but frequent LES. I made a post, asking why ROC on average gets 100" of snow per year if they can't get good synoptic storms and they don't get super-LES.  BUF airport can get super lake effect snow events, but ROC airport is not set up for a super LES band. Whatever the case, both ROC and BUF get 2.5x Toledo's annual snow, so they are in a different league.

 

It looks like Hamilton to Toronto gets 40-50" (100cm-125cm), but the Toronto people feel rather unlucky on synoptic storms recently.

 

ROC wont get major single band events but they can get frequent, weaker multiband events on a variety of flows from 300 to 30 degrees. I think over a course of a winter those smaller events really add up. Kind of like a toned down version of the UP of MI. I can't recall ever seeing a death band rock MQT.

 

For us it's been the last 6-7 years that's really seen the snow dry up for extended periods.

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IWX's thoughts.

 

THE MAIN CHALLENGES THIS PERIOD OCCUR IN THE MIDDLE OF THIS
UPCOMING WEEK AFTER AN UPSTREAM TROF TOPS THE UPPER RIDGE OVER
WESTERN NORTH AMERICA AND RACES SOUTHEAST TOWARD THE MIDWEST. FOR
THIS PACKAGE... FAVOR THE GFS. ALTHOUGH THE GFS HAS HAD SOME RUN
TO RUN ISSUES WITH CONSISTENCY...THE 12Z SURFACE LOW TRACK WITH
THIS SYSTEM MATCHES THE LATEST CIPS ANALOGS...FAVORING
PRECIPITATION EXTENDING ACROSS NORTHWEST OHIO AND INTO NORTHERN
INDIANA AND FAR SOUTHWEST LOWER MICHIGAN. HAVE RAISED
PRECIPITATION CHANCES 30 PERCENT ALONG WITH THE LATEST MODEL BLEND
WEDNESDAY NIGHT. THERMAL PROFILES INDICATED PRECIPITATION BECOMING
ALL SNOW AT SOME POINT WEDNESDAY OR WEDNESDAY NIGHT. GIVEN THE
UNCERTAINTY OF THE TIME OF CHANGEOVER TO SNOW AND STILL SOME
UNCERTAINTY OF THE SURFACE LOW TRACK...KEPT PRECIPITATION CHANCES
UNDER 55 PERCENT AND WILL WAIT TO INTRODUCE MENTION OF
ACCUMULATING SNOW IN THE HAZARDOUS WEATHER OUTLOOK.

 

This reminds me of the 2/23/12 storm.

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