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Pattern/storm inverted trough thread early Jan


Damage In Tolland

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Yeah maybe only 168 hours way back when I first looked at it in 1994....or I didn't have access to it beyond that. Only two runs a day and that was fine ....less stress than dealing with the wild 6z and 18z runs.

We only got the 12Z ECMWF and we didn't usually see it until around 7 or 8 PM.

The AVN went to 72 hours.

I'm thinking the MRF went 10 days?

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Yeah maybe only 168 hours way back when I first looked at it in 1994....or I didn't have access to it beyond that. Only two runs a day and that was fine ....less stress than dealing with the wild 6z and 18z runs.

We only got the 12Z ECMWF and we didn't usually see it until around 7 or 8 PM.

Yup... in the late 90s it came out first on like the univ of wyoming website at like 730pm lol. I think they only ran the Euro once a day too (just 12z)

NGM FOUS came out first shortly after 10... Eta FOUS right before 11.

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I see the 0Z GFS now has next weeks Miller A closer to Bermuda than Cape Cod. LOL I think I'd be skeptical of that solution.

Yup... in the late 90s it came out first on like the univ of wyoming website at like 730pm lol. I think they only ran the Euro once a day too (just 12z)

NGM FOUS came out first shortly after 10... Eta FOUS right before 11.

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Yup... in the late 90s it came out first on like the univ of wyoming website at like 730pm lol. I think they only ran the Euro once a day too (just 12z)

NGM FOUS came out first shortly after 10... Eta FOUS right before 11.

Your boy Boris (who reminded me a lot like Drag), used to love the NGM fous. He used to tell me, that when they signaled big qpf or winds....look out. I actually look at fous for a quick and dirty "overview" when writing TAFs as well.

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The 18z models didn't even exist until 2001 I don't think...maybe they ran some in 2000, but I never saw them until 2001. I remember looking at the ETAx for the March 2001 storm...the ETAx was the ETA between 60-84 hours as the regular ETA only went to 60 hours at that time. They only had the ETAx on this terrible page on NCEP which had the worst graphics.

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Personally I think all that extra resolution helps more inside about 60 hours and with meoscale features. I dunno if model skill out at 5, 6, 7 days has improved markedly.

Weenies don't realize how good the models are now compared to even 15 years ago. We had the MRF at 150km resolution past 72hr (almost 3x as bad as the NOGAPS) and now the GFS is about 28km out to 192hr and the Euro is 16km.

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Personally I think all that extra resolution helps more inside about 60 hours and with meoscale features. I dunno if model skill out at 5, 6, 7 days has improved markedly.

I think our skill for a 120 hours forecast is now equivalent to the skill of a 72 hour forecast from the 1990s...but I may wrong on that. I do know there's been quite a bit of improvement for 5 days and in...but not sure on 144 hours and beyond....probably not a whole lot.

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Personally I think all that extra resolution helps more inside about 60 hours and with meoscale features. I dunno if model skill out at 5, 6, 7 days has improved markedly.

D5-7 is WAYYYY better than it used to be. There is actually skill now versus a dart board decades ago.

aczhist.sm.gif

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Remember they used to have like the meso ETA which was run at 6z and 18z. It didn't run as far out in time. That seemed to predate the full intermediate runs that we have today.

The 18z models didn't even exist until 2001 I don't think...maybe they ran some in 2000, but I never saw them until 2001. I remember looking at the ETAx for the March 2001 storm...the ETAx was the ETA between 60-84 hours as the regular ETA only went to 60 hours at that time. They only had the ETAx on this terrible page on NCEP which had the worst graphics.

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Come on guys, just admit this "Norlun trough" stuff is all an elaborate joke. I've seen the clown maps with a low hundreds of miles offshore and some silly blue finger snaking back to ORH_wxman's deck.

They rarely verify what models show at this time range, thats for sure. So we're all pretty much sitting tight and waiting for the Euro to show something totally different. If it doesn't, it probably will tomorrow in this delicate setup. I hate inverted troughs from a forecasting perspective.

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The 18z models didn't even exist until 2001 I don't think...maybe they ran some in 2000, but I never saw them until 2001. I remember looking at the ETAx for the March 2001 storm...the ETAx was the ETA between 60-84 hours as the regular ETA only went to 60 hours at that time. They only had the ETAx on this terrible page on NCEP which had the worst graphics.

Yeah and before the ETA only ran to 48 hours. Some epic discussions with messenger, jerry, rick, and myself about extrapolating a 48 hour Eta or NGM panel lol

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Yeah and before the ETA only ran to 48 hours. Some epic discussions with messenger, jerry, and rick about extrapolating a 48 hour Eta or NGM panel lol

I remember how big of a deal it was when the extended the ETA to 60 hours in 2000. Everyone was so excited.

The old ETAx back in 2001....it scored its first huge coup in the March '01 storm. It had it crushing New England at 84 hours while others were only hammering the Mid-Atlantic.

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I remember how big of a deal it was when the extended the ETA to 60 hours in 2000. Everyone was so excited.

The old ETAx back in 2001....it scored its first huge coup in the March '01 storm. It had it crushing New England at 84 hours while others were only hammering the Mid-Atlantic.

Yeah Scott and our old friend Brian totally nailed that storm.

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They rarely verify what models show at this time range, thats for sure. So we're all pretty much sitting tight and waiting for the Euro to show something totally different. If it doesn't, it probably will tomorrow in this delicate setup. I hate inverted troughs from a forecasting perspective.

At what time range is the model reliable forecasting a norlun?

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