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February storm threat discussion


Ellinwood

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I'm riding p09 of the 18z gfs ensembles for this weekend. Screw the operational.

That will last until the next round of ens members. I'll then ride the best looking one of those. The hell with reality. Snow isn't real. It's an obsessive fantasy.

Whew.. She's a beauty alright... Ride til ya die... I'm going out with my boots on in this storm... After all stormtracker proclaimed it

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I am as well skeptical of anything outside of 72hrs as well. Especially on how big of a let down this winter has been.

72 hours, eh?

Also, this winter has been/will be a let down if you had, or continue to have, unrealistic expectations.

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72 hours, eh?

Also, this winter has been/will be a let down if you had, or continue to have, unrealistic expectations.

Since you are know models better than any of us here - do you know why the solutions are changing so much between each run?

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Since you are know models better than any of us here - do you know why the solutions are changing so much between each run?

That depends on what time frame you're talking about. The (main operational) global models have been fine (almost historically good, but not quite as good as last year) in the 72-144h lead time range in terms of forecast skill.

In terms of predictability, this year has proven to be slightly more difficult to forecast in the NH for the medium range than the previous several years (as measured by the skill of our frozen CDAS system). This implies that the fundamental predictability (error growth) for the recent regimes(s) has been lower (higher) than seasons past. I think others have touched on the some of the reasons for this in other threads.

Lastly, individual solutions/forecasts with lead times of 7-14 days will always swing pretty wildly (this is a predictability/chaos issue).

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72 hours, eh?

Also, this winter has been/will be a let down if you had, or continue to have, unrealistic expectations.

Like what, a model solution beyond 72 hours that comes anywhere close to what actually happens?

I don't think anyone here has had unrealistic expectations. With what the models have done lately, a three day forecast would be just as good if it were a total guess.

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Like what, a model solution beyond 72 hours that comes anywhere close to what actually happens?

I don't think anyone here has had unrealistic expectations. With what the models have done lately, a three day forecast would be just as good if it were a total guess.

You mean like 20-40" of snow for the mid-Atlantic?

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That depends on what time frame you're talking about. The (main operational) global models have been fine (almost historically good, but not quite as good as last year) in the 72-144h lead time range in terms of forecast skill.

In terms of predictability, this year has proven to be slightly more difficult to forecast in the NH for the medium range than the previous several years (as measured by the skill of our frozen CDAS system). This implies that the fundamental predictability (error growth) for the recent regimes(s) has been lower (higher) than seasons past. I think others have touched on the some of the reasons for this in other threads.

Lastly, individual solutions/forecasts with lead times of 7-14 days will always swing pretty wildly (this is a predictability/chaos issue).

Thanks for the explanation.

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You mean like 20-40" of snow for the mid-Atlantic?

I think I kind of remember other times when people got excited by threats that wee very low probability events. Th enice think is we haven't had any the models are crappy threads. Most seem to now understand chaos though occasionally they let their weeny side get the better of them. There's nothing wrong with that.

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Sat evening flurries?

Anothere new solution... this time the 0c 850 line plays chicken with DCA hrs 105 to 120 and is either over DCA or just south near EZF when precip is here... then a CAD signal shows up after 120...

snowfall maps on Raleighwx have a few inches for DCA

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