Jump to content
  • Member Statistics

    17,609
    Total Members
    7,904
    Most Online
    NH8550
    Newest Member
    NH8550
    Joined

Coastal Storm Discussion...April 22-23, 2012...


ag3

Recommended Posts

Seems like most models are moving in the rainy phased solution. Can't wait for some rain!

The path of the low that the euro ensembles and the operational have would also be pretty windy and also some big waves and coastal flooding.

We are on an astonomically high tide cycle because of the new moon. Highest tide cycle is on Saturday night (the day of the actual new moon)...

With the right path, this storm has a chance of beach and coastal issues. Storm is coming in at the highest tide cycle possible in any given month.

Link to comment
Share on other sites

  • Replies 810
  • Created
  • Last Reply

Well let's hope this trend is real as 1) We need the rain, and 2)We haven't had any exciting weather since October, and 3) It'd be nice to knock the pollen levels down. Trees around here are pretty much 80% leafed out now, on par for early May standards.

Link to comment
Share on other sites

The path of the low that the euro ensembles and the operational have would also be pretty windy and also some big waves and coastal flooding.

We are on an astonomically high tide cycle because of the new moon. Highest tide cycle is on Saturday night (the day of the actual new moon)...

With the right path, this storm has a chance of beach and coastal issues. Storm is coming in at the highest tide cycle possible in any given month.

Except May 6th, which is the highest tide cycle of the year.

Link to comment
Share on other sites

It seems the part of the forecast with the highest confidence is that moderate rain/thunderstorms are likely on Saturday afternoon/evening... wouldn't surprise me if SPC adds a 5% or maybe a low-end 15% risk at most for Saturday; the parameters on the NAM are marginally favorable for locally strong storms, with the models also supporting at least 1/4 to 1/2" QPF with the cold front not including whatever falls with the developing low afterwards.

post-1753-0-17454600-1334871565.gif

Link to comment
Share on other sites

the nam and gfs remain in good agreement at the moment with a delayed phase . I think the phased bomb solution is a bit unrealistic.

Im a big time euro fan, but it has had moments at this range where it phases things too early. I'd look for it to back off at 0z

Link to comment
Share on other sites

the nam and gfs remain in good agreement at the moment with a delayed phase . I think the phased bomb solution is a bit unrealistic.

Im a big time euro fan, but it has had moments at this range where it phases things too early. I'd look for it to back off at 0z

The ECM exaggerated storms involving phasing in several cases this winter, although it obviously wasn't the case every time. February 24 is a good example of that, the GFS/NAM had much less phasing than the ECM, which backed down only in the short range. The NAM/GFS may be too far east in this case, but I would not be surprised at all if the ECM ends up being too amplified. A scenario close to the 0z CMC or a bit west of the 12z CMC seems to be a reasonable middle solution IMO.

Link to comment
Share on other sites

And the UKMET and the JMA? All of which have better accuracy ratings at the moment than the GFS. All of which show nothing like what the GFS does. Or will the number 4 model, the GFS cave to numbers 1, 2, and 3. In other words, I doubt the GFS's solution and I suspect highly that IT will be the one to cave completely.

the nam and gfs remain in good agreement at the moment with a delayed phase . I think the phased bomb solution is a bit unrealistic.

Im a big time euro fan, but it has had moments at this range where it phases things too early. I'd look for it to back off at 0z

Link to comment
Share on other sites

the nam and gfs remain in good agreement at the moment with a delayed phase . I think the phased bomb solution is a bit unrealistic.

Im a big time euro fan, but it has had moments at this range where it phases things too early. I'd look for it to back off at 0z

GFS just made another step towards the euro. Now up to 1.25" of precip for NYC. Up from 12z, which had .63".

Link to comment
Share on other sites

And the UKMET and the JMA? All of which have better accuracy ratings at the moment than the GFS. All of which show nothing like what the GFS does. Or will the number 4 model, the GFS cave to numbers 1, 2, and 3. In other words, I doubt the GFS's solution and I suspect highly that IT will be the one to cave completely.

I dont care about model rankings, i don't look at the JMA and the ukie is the euros sister model. Im not saying any model will cave to another either. The euro has a much more robust phase than the 18z gfs. I've see the euro do this a lot, and it usually backs off.

Link to comment
Share on other sites

This GFS run pretty much leaves the NAM alone with showing almost no rain after the cold front. While I highly doubt the GFS completely changes and becomes fully phased like the 12z ECM shows, it's a step towards a middle solution where at least 1-3 inches of rain would fall, not the huge rainstorm shown on some models but enough to ease the drought.

Link to comment
Share on other sites

This GFS run pretty much leaves the NAM alone with showing almost no rain after the cold front. While I highly doubt the GFS completely changes and becomes fully phased like the 12z ECM shows, it's a step towards a middle solution where at least 1-3 inches of rain would fall, not the huge rainstorm shown on some models but enough to ease the drought.

Euro shows 2"-3". As do its ensembles. GFS is playing catchup.

Link to comment
Share on other sites

The latest GFS model is not even anywhere remotely close to what it was showing a couple days ago as far as rainfall is concerned..

This was thru the first 120 hrs...

post-342-0-67610700-1334874527.jpg

And this was the next 24 hrs after..

post-342-0-62213400-1334874649.jpg

And now this is the most recent ...

post-342-0-99800100-1334874702.gif

It is natural for the models to shift the QPF axis around but we are still nowhere even close to what this once was depicted as..

I really do not think the GFS is taking a step towards the ECM

There really is no difference in low placement from 12 Z at 90 hours and 18 Z at 84 hrs ..The difference is in the QPF shield..

Link to comment
Share on other sites

I agree with what you say here with the Euro tending to overdo things in the long range, but not usually at 4 days out and usually it does not have the next 2 best models doing nearly the exact same thing at 4 days out. This leads me to believe that the GFS is going to figure it out on the next run or two. It usually does figure it out by around day 3.

I dont care about model rankings, i don't look at the JMA and the ukie is the euros sister model. Im not saying any model will cave to another either. The euro has a much more robust phase than the 18z gfs. I've see the euro do this a lot, and it usually backs off.

Link to comment
Share on other sites

Latest HPC update just in.

p120i00.gif

As to the issue with the euro of course it can be a bit over done at H5 and on the retrograde but I think the models are generally going to trend stronger with the low and slightly west towards the euro. It would seam reasonable with the warmer then normal Atlantic and gulf waters that the low develops faster. This can also Hint at a faster moving storm. but if the H5 is closer to closing off like the euro it would turn into the coast much sooner.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...