Jump to content
  • Member Statistics

    17,586
    Total Members
    7,904
    Most Online
    LopezElliana
    Newest Member
    LopezElliana
    Joined

The Look Ahead Thread


WinterWxLuvr

Recommended Posts

Yes they did. The pattern reamins one in which there will be more warm days than cold especially if we can't get a negative nao going. The models have been vacillating about whether one develops or not and with no MJO help, it's hard to knwo whether one will or will not develop. The pacific is problem no matter what but that's relying on the models and we're better than that. :whistle:

NAO is a real wildcard right now. No clear indication of going negative from any model. Not saying it won't but it isn't obvious. Neutral territory seems to be the consensus but the NAO typically doesn't stay neutral for an extended period. Last time we had a long period of the NAO being neutral was the first week of Nov. Then we had a 2 month run of an uber -NAO with not much to show for it but cold and wind. Then a brief flip to a pos NAO in Mid Jan and we FINALLY got a good storm after the NAO went negative again in late Jan.

Maybe can can pull off another storm if we can flip - again. We usually have better chances of snow when the NAO is flipping from + to -.

Link to comment
Share on other sites

  • Replies 704
  • Created
  • Last Reply

Just saying... semi-long term trends >> run-to-run changes

I'm not sure why people are using individual runs from d+6 and later to describe what's going to happen. Instead, look at general trends (which is not comparing just two recent runs) in what the pattern is doing.

You could use the same argument to say "why have individual model output at all past d+5?" :P It's a nice product to have (MDA even produces their own similar graphics), but like looking at the maps, one must seek the trends and overall idea rather than just look at the output of a single run in the medium/long range.

-----

The GFS Op. has been consistently holding onto the Southeast ridge more so than the Euro going into early next week, which would mean more aboves for us rather than neutral/below normal temps around mid-week next week. The Euro has been verifying better with 2m temps in the Southeast and Mid-Atlantic recently, but the ridge usually likes to come in stronger than the models suggest in the medium range once it's "established" over the region, so I wouldn't be surprised if the GFS solution ended up verifying better. I say "established" because the ridge is a relatively recent feature, and a definite long-term pattern change hasn't really been set yet.

you are making assumptions that commentary is based on one run

Link to comment
Share on other sites

12 UTC GFS EVENT Average Start Time Average End Time STATUS COMMENTS 
DATA DUMP AND PREP 14:46:16 14:54:58        COMPLETE-14:56:59 ON-TIME 
ANALYSIS  14:55:10 15:19:35        COMPLETE-15:21:55 ON-TIME 
T382 FORECAST F00-F180 15:19:44 16:25:10        RUNNING-16:53:51 1-2 HOURS LATE 
T190 FORECAST F192-F384 16:25:19 16:37:57        RUNNING-16:23:42 JOB RUNNING TOO LONG 
12hr PRODUCTS  15:30:35 15:43:13        COMPLETE-16:16:41 31-45 MIN. LATE 
24hr PRODUCTS  15:41:19 15:49:42        COMPLETE-16:41:28 46-60 MIN. LATE 
36hr PRODUCTS  15:48:18 15:56:27        COMPLETE-17:07:18 1-2 HOURS LATE 
48hr PRODUCTS  15:51:55 15:59:52        RUNNING-15:50:42 JOB RUNNING TOO LONG 
60-72hr PRODUCTS  15:58:13 16:09:04        RUNNING-15:57:00 JOB RUNNING TOO LONG 
84-120hr PRODUCTS 16:05:42 16:28:05       Target=16:20:00 RUNNING-16:05:49 JOB RUNNING TOO LONG 
GFS MOS FORECAST 16:12:52 16:13:27        RUNNING-16:11:41 JOB RUNNING TOO LONG 

Link to comment
Share on other sites

NAO is a real wildcard right now. No clear indication of going negative from any model. Not saying it won't but it isn't obvious. Neutral territory seems to be the consensus but the NAO typically doesn't stay neutral for an extended period. Last time we had a long period of the NAO being neutral was the first week of Nov. Then we had a 2 month run of an uber -NAO with not much to show for it but cold and wind. Then a brief flip to a pos NAO in Mid Jan and we FINALLY got a good storm after the NAO went negative again in late Jan.

Maybe can can pull off another storm if we can flip - again. We usually have better chances of snow when the NAO is flipping from + to -.

On the NAO issue.... please check the ESRL reforecast esembles as the CPS forecast have been down for days. What u are seeing is the esemble forecast from Feb 11! The ESRL just updated to yesterdays and shows the NAO is already just negative.

link: http://www.esrl.noaa.gov/psd/forecasts/teleconn/images/nao.png

Link to comment
Share on other sites

most of next week looks near or just below avg on the euro tempwise.. warmup toward the end of the week but caused by cold front moving east so it's short lived it looks.

That's cold is probably because I thought the pattern favored more warm days than cold in my blog but that was with the nao being nearly neutral. The euro negative NAO has been looking stronger the last two runs. One model now has a wave so suppressed we get next to nothing and the other (GFS) has it so far north stay in the warm air and probably don't get much precip.

Link to comment
Share on other sites

That's cold is probably because I thought the pattern favored more warm days than cold in my blog but that was with the nao being nearly neutral. The euro negative NAO has been looking stronger the last two runs. One model now has a wave so suppressed we get next to nothing and the other (GFS) has it so far north stay in the warm air and probably don't get much precip.

the euro has been somewhat consistent on the colder idea but for some reason the gfs looks more reasonable overall to me. i guess we'll see.

Link to comment
Share on other sites

most of next week looks near or just below avg on the euro tempwise.. warmup toward the end of the week but caused by cold front moving east so it's short lived it looks.

GFS is quite warm for Monday, ~60F, but looks chilly for Tuesday. Seasonable over the weekend. The 500 pattern and 850 temps would imply fairly cold temps for the Wed/Thurs as well before a warm Friday ahead of that cold front and then possibly well below normal temps after that.

Link to comment
Share on other sites

the euro has been somewhat consistent on the colder idea but for some reason the gfs looks more reasonable overall to me. i guess we'll see.

I agree, I've been leaning warm as the euro sometimes is quick to close off 500 highs over Greenland but don't feel strong enough to completely discount the euro now that it has the lowly GGEM on its side.

Link to comment
Share on other sites

GFS is quite warm for Monday, ~60F, but looks chilly for Tuesday. Seasonable over the weekend. The 500 pattern and 850 temps would imply fairly cold temps for the Wed/Thurs as well before a warm Friday ahead of that cold front and then possibly well below normal temps after that.

It looks like a real roller coasting to me. Warm days interspersed with cold that might average near normal overall.

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...