Jump to content
  • Member Statistics

    17,606
    Total Members
    7,904
    Most Online
    ArlyDude
    Newest Member
    ArlyDude
    Joined

Dec 24-25 Snowstorm part 2


jhamps10

Recommended Posts

the interesting thing that is kinda lost with this storm is the fact that it's still 4-5 days out...it's been watched and analyzed for days now and yet its just beginning to come together in the later nam panels. The nam is still fairly disjointed with all the upper energy but has made a better attempt at cleaning up the mess at 18z. This alone shifted more precip further north into our area. Who knows, maybe we can all get back to squeezing out an inch or two by the time this verifies.

Link to comment
Share on other sites

  • Replies 1k
  • Created
  • Last Reply

This is why I haven't hopped on that bus. I am quite young but I know the history with these types of situations that the models will "Catch" something inside 48hrs and right now they are sniffing it but haven't caught it. I could be barking up the wrong tree here but I think the EURO especially has put too much emphasis on the southern energy the whole time. The GFS caught it and NAM is catching on. The CMC is flip flopping but it sniffs it.

It would be nice to see a phase quick enough to pull this sucker inland instead of a coastal. Likely not going to happen!

yep very very unlikely. The one thing that hasn't changed is the ridge axis out west....the location has been pretty solidly and consistently forecasted by a lot of the models and it's way too far east for us.

Link to comment
Share on other sites

dvn

LONG TERM...THURSDAY NIGHT THROUGH NEXT WEDNESDAY

MAIN FOCUS CONTINUES TO BE ACCUMULATING SNOW THURS NGT THROUGH

CHRISTMAS EVE. 12Z MODEL INITIALIZATION OFFERS NO GLARING ISSUES.

BOTH ENERGY SOURCES OF INTEREST THOUGH STILL OFFSHORE (BC COAST AND

SOCAL)... THUS WILL TAKE ANOTHER 12 HRS TO BE BETTER SAMPLED BY

RAOBS. WITH THIS IN MIND... THE 12Z NAM IS OUTLIER BEING DRIER AND

FURTHEST SOUTHWEST WITH QPF... AND DISCARDED AS MODEL UNREALISTIC AT

36-42 HRS INDICATING THE BUILDING OF HEIGHTS ALOFT OVER THE DAKOTAS

WITH NEARLY STATIONARY MID LEVEL WAVE INDICATED NEAR MT AND ND/SD

BORDERS. THEREFORE... FCST SIDED TOWARD BLEND OF GEM/UK/ECM/GFS...

WHICH CONTINUE TO SHOW SPLIT FLOW WITH AREA UNDER THE INFLUENCE OF

NORTHERN STREAM AS ENERGY COMING INTO THE PAC NW WILL FLATTEN

RIDGING IN PLAINS AND THEN DIVE E/SE THROUGH THE MIDWEST BY LATE

CHRISTMAS EVE. MEANWHILE... ROBUST ENERGY IN SOUTHERN STREAM JUST

OFF CA COAST WILL MOVE EWD AND REMAIN UNPHASED WITH NORTHERN STREAM

ENERGY... WHICH IS CRITICAL AND MEANS AREA AVOIDS POTENTIAL FOR

MAJOR WINTER STORM. FOLKS ON THE EAST COAST THOUGH NOT LOOKING AS

FORTUNATE THOUGH AS SUGGESTIONS OF PHASING TO OCCUR OVER THE DEEP

SOUTH... FORMING POTENT NOR'EASTER LATE IN WEEKEND AND EARLY NEXT

WEEK.

THURS NGT-CHRISTMAS EVE... FORCING MECHANISMS FOR SNOW WILL COME

INITIALLY FROM LOW/MID LEVEL WARM ADVECTION AND FRONTOGENETICAL

FORCING... WHICH LOOKS TO PIVOT AND STALL IN PORTIONS OF AREA INTO

CHRISTMAS DAY WHILE GRADUALLY WEAKENING AHEAD OF NEXT BOUT OF FORCING

ATTENDANT TO APPROACHING MID LEVEL SHORTWAVE. BETWEEN THESE FORCING

MECHANISMS... MOST IF NOT ALL OF THE AREA IS EXPECTED TO SEE SOME

ACCUMULATING SNOW. AMOUNTS AND LOCATION OF HEAVIEST THOUGH STILL

SOMEWHAT IN QUESTION. GFS QPF OF 0.5 TO 0.6 INCH WOULD BE MORE THAN

WE SAW WITH PAST SYSTEM EARLIER THIS WEEK... AND SEEMS A BIT

AGGRESSIVE PER MAGNITUDE OF FORCING. MODEL IS ALSO A BIT HIGHER

ON SFC MOISTURE WITH DEWPTS IN U20S/NR 30 AND FEEL THIS TOO BIT

OVERDONE AND THUS FAVORED SLIGHTLY DRIER BLEND OF GEM/ECM/UK WITH

DRIER INFLUENCE FROM DEPARTING RIDGE... WITH ROUGHLY 0.25 TO 0.35

BEING MAX QPF. THUS... USING SLR OF ROUGHLY 12-14:1 SUPPORTS 3-5

INCHES IN GENERAL WITH HEAVIEST BAND. GARCIA METHOD ADJUSTED FOR

GREATER THAN 12 HR PD OF LIFT WOULD SUPPORT POTENTIAL FOR FEW 6 INCH

AMOUNTS IN HEAVIEST BAND. OUTSIDE OF THE HEAVY BAND EXPECT GENERAL

1-3 INCH AMOUNTS. WHERE THE HEAVIEST BAND SETS UP IS STILL UNCERTAIN

AS INTERNAL MODEL SIGNALS VARY... BUT TREND APPEARS TO

BE FURTHER NORTH AND GENERALLY IMPLIED KCID-KMLI AXIS +/- 50 MILES

RESIDING IN 925-850MB CONVERGENT AXIS LONGEST AND JUST LEFT OF

850 CIRCULATION SHOW TO DIVE SOUTH THROUGH WESTERN IA CHRISTMAS EVE

DAY.

BOTTOM LINE... LOOKS AS THOUGH MUCH OF AREA WILL SEE SOME

ACCUMULATING SNOW... INITIALLY THURS EVE INTO OVRNGT POSSIBLY

FOCUSED FROM QUAD CITIES NWWD... BUT IN TIME OVERSPREADING AREAS TO

SOUTH WITH MID LEVEL WAVE PASSING AND INVERTED SFC TROUGH SLIDING

JUST TO S/W OF CWA. MAX AMOUNTS OF 3-5 INCHES WITH LOCAL 6 INCH

POSSIBLE WITH ADVISORY LIKELY NEEDED FOR PORTIONS OF CWA... WITH

HEAVIEST AXIS NEEDING TO BE REFINED IN LATER FCSTS.

Link to comment
Share on other sites

I noticed the discussion about breaking up the area last night, posted this in the OT section

MSP has a good idea though, that a split would make sense, maybe group Ohio in with W PA/NY, West Virgina, and KY/TN. Solves this issue quickly.

This is similar to Hoosier's idea, and would fit the pattern for weather, as most weather that directly effects those areas do not effects IL/MI west, or it effects IL/MI west first then the OV later.

Link to comment
Share on other sites

I noticed the discussion about breaking up the area last night, posted this in the OT section

This is similar to Hoosier's idea, and would fit the pattern for weather, as most weather that directly effects those areas do not effects IL/MI west, or it effects IL/MI west first then the OV later.

I think we are to small of a group to be breaking us up and I enjoy discussing the weather out West and North as much as I do my own. Just my two cents. I think everyone just needs to hug and make up.

Link to comment
Share on other sites

I think we are to small of a group to be breaking us up and I enjoy discussing the weather out West and North as much as I do my own. Just my two cents. I think everyone just needs to hug and make up.

Personally I wouldn't want a split other than maybe a split of threads within the group, my post was merely a suggestion if it were to happen.

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...