EMC's Model Evaluation Group

 The Model Evaluation Group (MEG) community is established to interact with the user community on issues related to the forecast systems of NCEP's Environmental Modeling Center (EMC).    It is used to discuss overall model performance and provide feedback on operational and parallel versions of the models which comprise the production suite.

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RE: REFS coverage of the entire Columbia River Basin?

It was on purpose even though it seems odd.  I wasn't sure who to reach out to so I figured someone involved with the REFS would see this question.  Thank you Geoff.   Colby

RE: REFS coverage of the entire Columbia River Basin?

    Hi Colby-            (Not sure if you realize that you put this inquiry into a global model discussion.)             Yes, the NBM QPF...

REFS coverage of the entire Columbia River Basin?

The Northwest River Forecast Center was hoping to use NBM QPF across the entire Columbia River Basin, which includes a northward jaunt the Columbia River makes into Canada.  Due to the HREF...

RE: Appointment Affidavit

Please disregard, VLAB was accidentally included on a private email thread.  V/R, ...

Appointment Affidavit

Attached is your appointment affidavit. Please sign and return to me, then I'll have the CO sign it today. ...

Ice coverage in model guidance

I'm looking for current information on how ice cover is depicted in model guidance (this is specifically in regards to impacts on lake effect convection on the Great Lakes).  I have some...

Michael lead-up

  I wanted to share a video I made comparing GFS and FV3 leading up to Michael. Use  this link  to access the 5min .mp4 file (~15MB) located in the NOAA Google Drive space and...

summaries now available

            The FV3GFS evaluation web page has been updated, with the addition of a summary section.        http://www.emc.ncep.noaa.gov/users/Alicia.Bentley/fv3gfs/            The new...

Evaluation Period Completed

      One final post for the night, I promise......       The official evaluation period for the FV3GFS is now completed.   Centers and NWS Regional SSDs will get information soon, via the...

RE: Re: GFS FV3 #2 in August

    Warren-          Thanks for your post.     I'm attaching an image from the MEG tropical recap presentation given a few weeks ago.    The top panel is track error,...

Fwd: FV3/GFS Comparison: The Good and Bad: Two Case Reviews

      Two more cases from Rob Cox at CYS. Hello, This comparison will be...

Fwd: FV3/GFS Comparison: The Good and Bad: Two Case Reviews

      Two more cases from Rob Cox at CYS. Hello, This comparison will be...

Re: Good Results on a Frontal Timing

    hi Rob-            Ok, I had success posting this case.    I'll forward your other email to the list shortly.    I have no idea at all why your posts didn't go through, but I...

Fwd: Good Results on a Frontal Timing

    Posting on behalf of Rob Cox, the SOO at CYS.    His attempt to post didn't work for some reason, but he has an excellent example of FV3GFS improvement with a surge of...

Re: GFS FV3 #2 in August

Jeff, Great to see!  Interesting to note dramatic difference between GFS and FV3 re both intensity and path of Florence as it approaches the Carolinas (see attached figs). ...

small science change to FV3GFS

    hello-         A modest science change was made to the FV3GFS late last week to address an issue with tropical cyclone intensity being too weak.     This change to an advection scheme...

Intro to MEG Evaluation of FV3GFS Retrospective Cases

Hi all, For those who may have missed yesterday's MEG meeting, we discussed an overview of our plans for evaluating the FV3GFS retrospective cases. The covered information included a...

RE: Better handling of high-level Hurricane moisture outflow?

Hi Tim, Thanks for posting this case!  It's good to see that the FV3 performance was better overall here, and given it was consistently drier than the GFS for several runs, it...

Better handling of high-level Hurricane moisture outflow?

Here is something completely different.  For Fire Weather in the Intermountain West, it is often very subtle model differences that are VERY important.    When Fabio was decaying off the...

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