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Preliminary Hearings(Probable Arraignment Tomorrow) - December 31st-January 1st 2013 threat


The_Global_Warmer

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Southern IN has suddenly turned into the UP of Michigan. :guitar:

LOL. Can't remember this much snow on the ground since 04. It's kind of concerning that the storm track seems to be setting up in this fashion. Seems like every winter it locks in and doesn't move much anymore. It's nice for awhile, but around here it can get pretty tiresome since the road crews aren't really set up for it. Rooting for this one to go wide north.

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LSX put's out some early numbers.

Has me right t 2.1 inches. not bad. Would replenish the snow that will melt tomorrow before it get's frozen in a bit. Last night's snow has held up good with such good liquid content. Nice frozen layer at the bottom. If we can get lucky and pull 3-4 inches out of this next one before the freezer get's set up for a bit we might get 7-10 days of snow cover.

StormTotalSnowFcst.png

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Interesting AFD from IND.

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE INDIANAPOLIS IN

320 AM EST SUN DEC 30 2012

.SHORT TERM /TONIGHT THROUGH TUESDAY NIGHT/...

ISSUED AT 319 AM EST SUN DEC 30 2012

FORECAST FOCUS IS ON PRECIPITATION CHANCES MONDAY INTO TUESDAY.

CLOUDS WILL INCREASE SUNDAY NIGHT AS ISENTROPIC LIFT BEGINS AHEAD OF

THE FRONT. WENT SLIGHTLY ABOVE MOS FOR TONIGHT TO ACCOUNT FOR

INCREASING CLOUDINESS.

FRONT MOVES IN ON MONDAY AND MONDAY NIGHT WITH ASSOCIATED UPPER

TROUGH AND CHANCES FOR PRECIPITATION WILL INCREASE. TRENDS CONTINUE

TO DEPICT BEST MOISTURE AND FORCING ACROSS THE SOUTHERN FORECAST

AREA AND THIS IS WHERE THE HIGHEST POPS (LIKELY) EXIST.

PRECIPITATION TYPE DOES NOT LOOK TO BE AN ISSUE THIS FAR NORTH AND

IS EXPECTED TO FALL IN ONLY THE FORM OF SNOW.

AS WITH THE EVEN ON FRIDAY NIGHT...AM A LITTLE CONCERNED AT THE

STRONG FRONTOGENIC FORCING AT 500H WHICH COULD PUSH SNOWFALL AMOUNTS

HIGHER THAN THE 1 TO 2 INCHES THE MODELS ARE PREDICTING. BUMPED UP

SNOWFALL AMOUNTS ACROSS THE ENTIRE CWA...FOR 2 TO 4 ACROSS THE FAR

SOUTH...2-3 ACROSS THE CENTER AND 1 TO 2 FOR THE NORTHERN

COUNTIES. THE SOUTHERN COUNTIES (THOSE SOUTH OF THE I-70 CORRIDOR)

ARE COMING CLOSE TO ADVISORY CRITERIA. PER COORDINATION WITH

SURROUNDING OFFICES WILL HOLD OFF ON ISSUING ONE NOW AND ISSUE AN

SPS.

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Looks like an inch, possibly 1.5" for LAF. Maybe. 12z NAM reduced amounts around here, but it looks more in line with the other guidance now. Initial lower/mid level dry air will be a limiting factor...but potential precipitable amounts aren't too bad really (0.50"+ for a time).

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Local met is calling for a few inches here. He must like the NAM.

I think we get something...probably less than that. Riding near the edge once again.

I had to go and look...he's still calling for 2-3" for LAF as of this morning's update. No chance. :lol:

Heck, there's some guidance that's almost a whiff for us. I believe we'll be very lucky to sneak into the 1.0-1.5" range.

EDIT: ride the 12z 4km NAM I guess. http://www.meteo.psu.edu/~fxg1/NAMSFC4_12z/ptot60.html

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I had to go and look...he's still calling for 2-3" for LAF as of this morning's update. No chance. :lol:

Heck, there's some guidance that's almost a whiff for us. I believe we'll be very lucky to sneak into the 1.0-1.5" range.

EDIT: ride the 12z 4km NAM I guess. http://www.meteo.psu...12z/ptot60.html

It looks like it tries to get some good banding going just like Friday not. So the highest totals may be in a few narrow bands again. With 1-3 inches spread everywhere else. Im holding out hope. I've got 9-10 inches on the ground and want to break a foot!

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It looks like it tries to get some good banding going just like Friday not. So the highest totals may be in a few narrow bands again. With 1-3 inches spread everywhere else. Im holding out hope. I've got 9-10 inches on the ground and want to break a foot!

I think you have an outside chance of doing that. But you're probably right about the banding. No idea where that may set up right now.

12z NMM seems to like just north of Indy (map on the left): http://www.meteo.psu.edu/~fxg1/COMPRAD4CENT_12z/ptot48.html

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I had to go and look...he's still calling for 2-3" for LAF as of this morning's update. No chance. :lol:

Heck, there's some guidance that's almost a whiff for us. I believe we'll be very lucky to sneak into the 1.0-1.5" range.

EDIT: ride the 12z 4km NAM I guess. http://www.meteo.psu.edu/~fxg1/NAMSFC4_12z/ptot60.html

Seems like there's pretty good consensus on around .15" qpf for us. A couple inches is not out of the question, but if we get lucky with banding then who knows.

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Indy AFD:

SHORT TERM /MONDAY THROUGH WEDNESDAY/

ISSUED AT 242 PM EST SUN DEC 30 2012

FOCUS IS ON PRECIPITATION EVENT MONDAY INTO TUESDAY. MODELS ARE

ACTUALLY NOT THAT FAR FROM EACH OTHER...SO USED A BLEND FOR THE

MOST PART.

FORCING WILL INCREASE DURING THE DAY ON MONDAY AS COLD FRONT

APPROACHES. FIRST ROUND WITH ISENTROPIC LIFT WILL MAINLY IMPACT

THE AREA AFTER 18Z. GRADUALLY INCREASED POPS DURING THE

MORNING...FINALLY REACHING LIKELY CATEGORY DURING THE AFTERNOON

ALL AREAS. SOUNDINGS SHOW THAT ENTIRE ATMOSPHERE SHOULD REMAIN

BELOW FREEZING...WITH TEMPERATURES NEAR THE SURFACE AROUND

FREEZING. THUS PRECIPITATION SHOULD REMAIN AS SNOW.

BEST FORCING MONDAY AFTERNOON LOOKS TO BE IN THE NORTHERN FORECAST

AREA...SO WENT WITH AROUND AN INCH THERE. WENT LESS THAN AN INCH

SOUTH.

ANOTHER ROUND OF FORCING MOVES THROUGH MONDAY NIGHT...MAINLY

IMPACTING THE SOUTHERN FORECAST AREA. THUS WENT LIKELY POPS ACROSS

THE SOUTH HALF AND CHANCE POPS ACROSS THE NORTH. LOOKS LIKE AN

INCH POSSIBLE SOUTH WITH LESSER AMOUNTS NORTH.

GIVEN THE ABOVE ENDED UP WITH A STORM TOTAL OF 1-2 INCHES ACROSS

THE ENTIRE FORECAST AREA. WILL HAVE TO KEEP AN EYE ON HOW THIS

DEVELOPS THOUGH AS MODELS ARE HINTING AND SOME AREAS OF

FRONTOGENETICAL FORCING AND DECENT LIFT IN THE SNOW GROWTH LAYER

BOTH IN THE AFTERNOON AND AGAIN IN THE EVENING. THIS COULD LEAD TO

BANDS OF HIGHER AMOUNTS...PERHAPS REACHING INTO ADVISORY CRITERIA.

WILL CONTINUE TO MONITOR. WILL ISSUE A SPS TO HIGHLIGHT THE UPCOMING

SNOW.

KEPT LOW POPS TUESDAY MORNING AS THE FRONT EXITS...BUT TUESDAY

AFTERNOON NOW LOOKS DRY. HIGH PRESSURE WILL MOVE IN AND PROVIDE

DRY AND COLD WEATHER FOR TUESDAY NIGHT AND WEDNESDAY.

FOR TEMPERATURES...TRENDED TOWARD THE COOLER OF THE GUIDANCE WITH

SNOW ON THE GROUND.

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IND goes with a WWA.

URGENT - WINTER WEATHER MESSAGE

NATIONAL WEATHER SERVICE INDIANAPOLIS IN

315 AM EST MON DEC 31 2012

...SNOW WILL DEVELOP THIS AFTERNOON AND CONTINUE INTO TONIGHT FOR

CENTRAL INDIANA...

.LOW PRESSURE ALONG A COLD FRONT WILL PASS THROUGH THE OHIO

VALLEY TODAY AND TONIGHT. THIS WILL BRING ACCUMULATING SNOW

TO CENTRAL INDIANA.

INZ021-028>031-035>049-051>057-060>065-067>072-311615-

/O.NEW.KIND.WW.Y.0008.121231T1800Z-130101T1200Z/

CARROLL-WARREN-TIPPECANOE-CLINTON-HOWARD-FOUNTAIN-MONTGOMERY-

BOONE-TIPTON-HAMILTON-MADISON-DELAWARE-RANDOLPH-VERMILLION-PARKE-

PUTNAM-HENDRICKS-MARION-HANCOCK-HENRY-VIGO-CLAY-OWEN-MORGAN-

JOHNSON-SHELBY-RUSH-SULLIVAN-GREENE-MONROE-BROWN-BARTHOLOMEW-

DECATUR-KNOX-DAVIESS-MARTIN-LAWRENCE-JACKSON-JENNINGS-

INCLUDING THE CITIES OF...LAFAYETTE...FRANKFORT...KOKOMO...

CRAWFORDSVILLE...ANDERSON...MUNCIE...INDIANAPOLIS...TERRE HAUTE...

SHELBYVILLE...BLOOMINGTON...COLUMBUS...VINCENNES...BEDFORD...

SEYMOUR

315 AM EST MON DEC 31 2012

...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO

7 AM EST TUESDAY...

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A WINTER

WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 1 PM THIS

AFTERNOON TO 7 AM EST TUESDAY.

* MAIN IMPACT: TRAVEL MAY BECOME DIFFICULT.

* ACCUMULATIONS: TWO TO FOUR INCHES.

* TIMING: THIS AFTERNOON THROUGH TONIGHT.

* WIND CHILL VALUES: AROUND 20.

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Their reasoning...

A POSSIBILITY

OF 2 TO 4 INCHES IS POSSIBLE BY THE EVENT/S END EARLY TUESDAY

MORNING. AND CONSIDERING THE IMPACT THIS MAY HAVE ON TRAVEL FOR

THE NYE HOLIDAY...COORDINATED WITH SEVERAL SURROUNDINGS OFFICES IN

ISSUING A WINTER WEATHER ADVISORY WHICH BEGINS AT 1 PM THIS

AFTERNOON AND ENDS AT 7 AM TUESDAY MORNING. OPTED TO ISSUE THE

ADVISORY MORE FOR IMPACT PURPOSES THAN ACTUAL SNOWFALL

CRITERIA...THOUGH SNOWFALL AMOUNTS WILL COME VERY CLOSE (AND COULD

PERHAPS EXCEED?) IN SOME LOCATIONS.

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Still pretty meh to this thing. 12z NAM hints at the first round of snow from LAF on north (even LOT's southern/southeastern CWA gets into it)...and then the second wave hits from IND on south. Could be a sort of screw zone of sorts between LAF and IND...if it's right.

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Still pretty meh to this thing. 12z NAM hints at the first round of snow from LAF on north (even LOT's southern/southeastern CWA gets into it)...and then the second wave hits from IND on south. Could be a sort of screw zone of sorts between LAF and IND...if it's right.

There's a surprise.. :lol:

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Still pretty meh to this thing. 12z NAM hints at the first round of snow from LAF on north (even LOT's southern/southeastern CWA gets into it)...and then the second wave hits from IND on south. Could be a sort of screw zone of sorts between LAF and IND...if it's right.

FWIW the 12z RAP gives you 0.30" of precip. Would make for a decent little system for you guys.

RAP_255_2012123112_F18_PCPIN_18_HR.png

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