Jump to content
  • Member Statistics

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

April 13-15 Snow Threat


Hoosier

Recommended Posts

  • Replies 332
  • Created
  • Last Reply

From DTX's afternoon. AFD:

MEANWHILE, EXTREMELY LOW STATIC STABILITY COMBINED WITH POTENTIAL

FOR UPRIGHT INSTABILITY WILL STRONGLY FAVOR A LOWER PORTION OF THE

FRONTAL SLOPE BECOMING ACTIVE AS FORCING ASSOCIATED WITH THE

AFOREMENTIONED JET RACES INTO THE AREA FROM THE SOUTHWEST. THE BIG

QUESTION THEN BECOMES EXACT PLACEMENT AND JUST HOW QUICKLY THE

COLUMN COOLS, ESPECIALLY FOR SOUTHEASTERN AREAS, INCLUDING METRO

DETROIT. SYNOPTICALLY, ALL LOCATIONS SHOULD CHANGE TO SNOW BY 05Z,

WITH THE METRO AREA CHANGING OVER LAST. THIS EXPECTATION IS

COMPLICATED, HOWEVER, BY THE FACT THAT POTENTIALLY VERY STRONG

ASCENT WILL AID IN COOLING THE COLUMN AND MAY ALLOW AN EARLIER

CHANGEOVER DURING THE HEAVIEST PRECIPITATION. IN ADDITION, THE

POTENTIAL FOR CONVECTION INTRODUCES BOTH THE POTENTIAL FOR

OVERACHIEVING FROM THE METRO AREA SOUTHWARD AS WELL AS THE POTENTIAL

FOR THE RESULTANT LATENT HEATING TO WARM THE COLUMN ABOVE FREEZING.

UNFORTUNATELY, IT APPEARS THAT EVALUATION OF THE EXACT NATURE OF

PRECIP OVER THE AFOREMENTIONED AREA WILL HAVE TO BE AN ONGOING

PROCESSES THIS EVENING. WILL THEREFORE FAVOR A MIDDLE-OF-THE-ROAD

FORECAST FOR ACCUMS TO ALLOW FOR LATER REFINEMENTS EITHER UP OR DOWN.

AS FOR FORECAST AMOUNTS, WEAKER FORCING AND A WET GROUND/STANDING

WATER WILL LIMIT SNOW RATIOS INVOF THE SAGINAW VALLEY. ELSEWHERE,

FAVORABLE NOCTURNAL TIMING, DRIER GROUND, AND HIGHER SNOWFALL RATES

WILL FAVOR SOMETHING CLOSER TO 12:1. GENERALLY EXPECTING AMOUNTS TO

RANGE FROM AROUND AN INCH IN THE SAGINAW VALLEY TO 3 INCHES FROM THE

METRO AREA SOUTH. COULD CERTAINLY SEE SNOWFALL RATES ON THE ORDER OF

AN INCH PER HOUR ACCOMPANIED BY THUNDER ON A LOCAL BASIS. FOLLOWED

AN ARW/NMM BLEND FOR QPF AMOUNTS DUE TO GENERAL CONSENSUS WITH

LARGER SCALE MODELS AND THEIR SIMILAR HANDING OF FINE SCALE

FEATURES, PARTICULARLY INVOF THE METROPOLITIAN AREA. THE FORECAST IN

ITS CURRENT FORM CALLS FOR BREAKING THE ALL-TIME RECORDS FOR

SNOWIEST WINTER SEASON AT BOTH DETROIT AND FLINT (SEE CLIMATE

SECTION).

Link to comment
Share on other sites

Yeah the snow was pretty light for the most part, but those enhanced bands were a different story.  Looks like there's more of them now too.  Now that it's getting later in the day the snow should stick a bit easier for you guys further east. 

 

EDIT:  Had about 7hrs of steady snowfall at varying rates.  A nice farewell bang from winter.

Link to comment
Share on other sites

Surprisingly, not a terrible lake-effect set-up either:

 

RAP_255_2014041421_F12_41.5000N_87.0000W

 

Low levels are a bit dry, but the thermodynamic environment is there.  850's around -12 C with the lake probably having warmed to at least 2-3 C by now...that could at least get something going.  And the flow isn't bad either, although winds back pretty sharply just above the EL.

 

The HRRR and IWX WRF were giving a few hundredths to Lake County IN earlier today.

 

Certainly not your normal April!

Link to comment
Share on other sites

I only need 0.2" to hit 100" for the season.

 

As usual, the SREF plumes are good for some nice accumulations. For CLE the mean is 4.1",  but incredibly the LOWEST member is a still respectable (by mid April standards) 1.75 inches. 

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...