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NYC/PHL Jan 18-19 Potential Threat Thread


am19psu

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That's all it takes for a school bus to slide down a hill taking out kids along the way before it slides through the intersection at the bottom of that hill.

That may be so..but it doesn't warrant canceling school when the precipitation is going to quickly change to rain and melt any of that anyway.

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That may be so..but it doesn't warrant canceling school when the precipitation is going to quickly change to rain and melt any of that anyway.

850s don't go above 0C on the ECM for my area until like 9am...so it would be cold enough for snow/ice when the buses were sent out. It doesn't really matter what happens later.

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HAZARDOUS WEATHER OUTLOOK...UPDATED

NATIONAL WEATHER SERVICE NEW YORK NY

324 PM EST FRI JAN 14 2011

CTZ005>012-NJZ002-103-NYZ067>070-151100-

NORTHERN FAIRFIELD-NORTHERN NEW HAVEN-NORTHERN MIDDLESEX-

NORTHERN NEW LONDON-SOUTHERN FAIRFIELD-SOUTHERN NEW HAVEN-

SOUTHERN MIDDLESEX-SOUTHERN NEW LONDON-WESTERN PASSAIC-

WESTERN BERGEN-ORANGE-PUTNAM-ROCKLAND-NORTHERN WESTCHESTER-

324 PM EST FRI JAN 14 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN

CONNECTICUT...NORTHEAST NEW JERSEY AND SOUTHEAST NEW YORK.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

A WARM FRONT ASSOCIATED WITH LOW PRESSURE APPROACHING FROM THE

WEST WILL LIFT NORTH THROUGH THE REGION LATE MONDAY NIGHT THROUGH

TUESDAY MORNING. WITH SURFACE TEMPERATURES SLOW TO RISE ABOVE

FREEZING...A PERIOD OF SNOW...MIXING WITH AND CHANGING TO FREEZING

RAIN...IS POSSIBLE FOR THE TUESDAY MORNING COMMUTE. MIXED

PRECIPITATION WILL TURN OVER TO PLAIN RAIN BY EARLY TUESDAY

AFTERNOON.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

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That's all it takes for a school bus to slide down a hill taking out kids along the way before it slides through the intersection at the bottom of that hill.

Should we cancel school for rain too? Rain very clearly impacts overall traction when driving. And 99 percent of schoolbus accidents that involve injured children happen in nice weather.

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Latest Wxsim forecast continues to paint a frozen picture for the NW Philly burbs (30mi). I noticed earlier in the thread whether models account for snowcover?? My Wxsim program runs its own routine based on my forecast initialization time with the snow cover I input. It then calculates snow cover each day of the forecast period. My forecast begins with the current 5.5" snowcover and the model predicts their still being 3.3" on the ground by Wednesday evening.

The detailed Forecast has an overnight low on Monday morning of 4 degrees...High for the day 30. Snow beginning around midnight (temp 18.2) changing to IP/SN by 7am (0.22") (temp 24.5) and then over to ZR at 9am (temp 27.5) temp reaches a high of 32.0 at 2pm with ZR continuing. By rush hour temperature continues to fall to 30.7 by 530pm with ZR continuing. IP begins to mix with the ZR by midnight and then a transition back to snow (1.0') before ending by 6am on Wednesday morning.

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Latest Wxsim forecast continues to paint a frozen picture for the NW Philly burbs (30mi). I noticed earlier in the thread whether models account for snowcover?? My Wxsim program runs its own routine based on my forecast initialization time with the snow cover I input. It then calculates snow cover each day of the forecast period. My forecast begins with the current 5.5" snowcover and the model predicts their still being 3.3" on the ground by Wednesday evening.

The detailed Forecast has an overnight low on Monday morning of 4 degrees...High for the day 30. Snow beginning around midnight (temp 18.2) changing to IP/SN by 7am (0.22") (temp 24.5) and then over to ZR at 9am (temp 27.5) temp reaches a high of 32.0 at 2pm with ZR continuing. By rush hour temperature continues to fall to 30.7 by 530pm with ZR continuing. IP begins to mix with the ZR by midnight and then a transition back to snow (1.0') before ending by 6am on Wednesday morning.

that sounds like a travel nightmare

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Is this rain? fwiw the nogaps wasnt that bad with the last storm overall

Yes it would be rain at that point cause it once again is really wrapped up and west. It started this last night at 6 z

Here is better images

The thing that concerns me here is that this is a progressive model with a SE Bias. It was correct in sniffing out the further west storm last storm and was the first to actually show it..So needless to say I will be watching this closely.

Last time its most west extreme was on SNJ so, i think this is probably showing its most west extreme again and should be further east. How much is the question? Other models I feel should be going back to a big storm idea IMO

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I have been reading these forecasts of yours for quite some time. Are they for real, or is this some kind of a joke? Do you really have your own forecast model?

Latest Wxsim forecast continues to paint a frozen picture for the NW Philly burbs (30mi). I noticed earlier in the thread whether models account for snowcover?? My Wxsim program runs its own routine based on my forecast initialization time with the snow cover I input. It then calculates snow cover each day of the forecast period. My forecast begins with the current 5.5" snowcover and the model predicts their still being 3.3" on the ground by Wednesday evening.

The detailed Forecast has an overnight low on Monday morning of 4 degrees...High for the day 30. Snow beginning around midnight (temp 18.2) changing to IP/SN by 7am (0.22") (temp 24.5) and then over to ZR at 9am (temp 27.5) temp reaches a high of 32.0 at 2pm with ZR continuing. By rush hour temperature continues to fall to 30.7 by 530pm with ZR continuing. IP begins to mix with the ZR by midnight and then a transition back to snow (1.0') before ending by 6am on Wednesday morning.

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Yes it would be rain at that point cause it once again is really wrapped up and west. It started this last night at 6 z

Here is better images

The thing that concerns me here is that this is a progressive model with a SE Bias. It was correct in sniffing out the further west storm last storm and was the first to actually show it..So needless to say I will be watching this closely.

Last time its most west extreme was on SNJ so, i think this is probably showing its most west extreme again and should be further east. How much is the question? Other models I feel should be going back to a big storm idea IMO

From what the NOGAPS is showing, the Poconos should see some front end and back end acccum. snow out of this.

D

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Yes it would be rain at that point cause it once again is really wrapped up and west. It started this last night at 6 z

Here is better images

The thing that concerns me here is that this is a progressive model with a SE Bias. It was correct in sniffing out the further west storm last storm and was the first to actually show it..So needless to say I will be watching this closely.

Last time its most west extreme was on SNJ so, i think this is probably showing its most west extreme again and should be further east. How much is the question? Other models I feel should be going back to a big storm idea IMO

A bigger storm means a warmer solution with heavy rain. If you want colder and snow potentials, you don't want a bigger storm this time.

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I'll gladly pass on a few inches of snow to get a strong low. Since a big snow storm is off the table, I'll gladly accept an ice storm and or heavy rain. For those that want the snow, the medium/long range looks very good. Better to pass up on an advisory event for a blizzard ten days from now.

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