February 11, 2014 archive

“O Canada…”

A developing weather situation warrants our attention tonight and that’s the potential of a snow event Valentine’s Day.  The Canadian has led the way with this system and other forecast model data is beginning to follow it’s lead, slowly, but surely :-).

While we have time to continue to fine tune things, the trend is certainly one for the snowier over the past 12 hours.  That’s not saying we have complete agreement amongst all forecast models, but the overall pattern is one that has to at least raise an eye brow for accumulating snow potential across central Indiana Friday.

A clipper system will dive southeast out of Canada and into the Dakotas Thursday.  It’ll race southeast through the Plains states and into Missouri as early as Friday before tracking into the lower Ohio and Tennessee Valleys’ Saturday morning.  Clipper systems can always be challenging to track, but especially during the late winter and spring months.  The combination of lingering winter chill and the resurgent spring warmth can turn what may seem like a “harmless” wet snow event into a full-blown snow storm with little warning if one’s not paying attention.  That’s not saying this is the case with this particular event, but it is saying we have a close eye on things.  This will come on the front end of a brief, but significant, pattern change that will promote warmer than normal conditions across the region next week.  The tight thermal gradient can essentially help fuel this system as it moves southeast (whether or not this makes “the turn” and adds to the snow pack along the East Coast is yet to be seen).  Temperatures Saturday may approach 50 degrees across southwest Missouri Friday while here, across the “snow fields” of central Indiana, we remain locked in the 20s.

For now we’ll refrain from hoisting snowfall potential, but suggest you keep a close eye on the Friday and Saturday forecast and plan for the likelihood of at least some accumulation.  Stay tuned.

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Permanent link to this article: https://indywx.com/2014/02/11/o-canada/

Tracking Late Week Snow…

Tue.

Wed.

Thr.

Fri.

Sat.

Sun.

Mon.

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-12/ 1

0/ 27

9/ 36

22/ 30

12/ 28

14/ 29

25/ 39 

0.00”

0.00″

0.00”

1-2”

1”

0.00″

0.50”

Forecast Updated 02.11.14 @ 8:00a

Bitterly Cold Start…Take a look at the 8a central Indiana weather roundup, courtesy of the National Weather Service:

INZ030>032-037>040-046>048-054>057-064-065-111400-
CENTRAL INDIANA

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
INDIANAPOLIS   MOCLDY    -4 -10  75 N3        30.46R
-EAGLE CREEK   MOCLDY    -8 -14  74 NW6       30.46R WCI -21
KOKOMO *+      PTCLDY   -20 -26  76 CALM      30.46R
MARION +       MOCLDY   N/A N/A N/A CALM      30.47S
MT COMFORT *+  PTCLDY   -17 -20  83 CALM      30.46R
SHELBYVILLE    PTCLDY    -9 -15  75 CALM      30.47R
ZIONSVILLE +   PTCLDY   -15 -22  71 CALM      30.46R

This just makes me shiver!  We note temperatures as low as 16 degrees below zero reported at Zionsville this morning just after 7 o’clock.  Today will be another brutally cold day, but sunshine will prevail.  Arctic high pressure will remain anchored over our region and result in another bitterly cold night tonight, but not as cold as it was last night/ this morning.

Midweek Moderation…We’ll begin to get into a westerly and southwesterly air flow Wednesday into Thursday in advance of our next snow maker.  While temperatures will remain below average levels, it’ll feel nice to go above freezing Thursday, albeit briefly.  Gusty southwest winds could offset the relatively milder feel Thursday, as gusts may approach 25-30 MPH by afternoon.

Meanwhile, a major winter storm will impact the Deep South and result in heavy snow and ice accumulations.  My old stomping ground of Johnson County, TN will likely accumulate 7-10″ of heavy, wet snow Wednesday into Thursday morning.

Tracking Two Snow Systems…We continue to have a couple questions around two snow makers Friday and Saturday.  The Canadian forecast model remains most aggressive in snow production, delivering a full-blown snow storm Friday with 4-6″ totals while the GFS suggests we struggle to accumulate 1″ Friday.  We’re continuing to go with a blend between the two, and side with the European model for now.  This would suggest 1-2″ of snow Friday followed by another fast moving clipper system Saturday that could deposit another 1″, or so.  Stay tuned as we continue to fine tune the Friday-Saturday forecast.

Milder Air, But Wet…Our next storm system will move in Monday and looks to primarily be a rain maker. Who thought highs approaching 40 (seasonal levels) would feel warm?!  After this brutally cold winter, it’ll feel just that!

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