September 15, 2013 archive

Rambling Around Between Games…

As we alluded to in the post earlier this morning, the weather pattern is beginning to get more active. As “seasoned” Hoosiers know, this is only the beginning of a rather “vamped up” weather period through the next 7-8 months around these parts. Yes, the lazy, hazy days of summer in the weather office are over.  Speaking of the weather office, I’m continuing to get settled into the new “home base” office. As I get settled, more and more products will begin to hit the site to help keep central Indiana Hoosiers abreast of what lies ahead in the weather department.

As we look at the upcoming week, we’ll note the trough and dominant northwesterly flow of the weekend begins to “relax” by mid week and weak ridging takes it’s place. This will lead to a warmer and more muggy (though nothing close to as oppressive as last week) feel to the air by mid week. We also note another dip in the jet by next weekend. While details still have to be ironed out, there’s a good shot of rain due in here by week’s end along with another cool down by next weekend. I also want to point out the re-curving typhoon out in the western Pacific.  This is in association with upper level ridge placement in the Pacific Ocean and we can actually use this tool to help us forecast weather here on the “home front” in the 6-10 day period. That would bring us roughly to 09.25.13 (give or take a couple of days) and would line up nicely with the cool end of the month we’ve been talking about for some time.  Recall that we’ve said we anticipate a warmer than normal month to continue (in the overall pattern sense) up until the last 5-7 days of the month. Does this help set the stage for a colder than average October ahead? Stay tuned…

Here’s a look at our precipitation outlook, compiled this afternoon using a variety of short and mid range forecast models.

precip

Watch how the troughs (cooler air) and ridging (warmer air) correlate with the temperature pattern in our official forecast (posted earlier this morning).

Monday

mondayjet

Wednesday

wednesdayjet

 Friday

fridayjet

Saturday

saturdayjet

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Sunday Forecast: Turning More Active

Updated 09.15.13 @ 9:26a

Zionsville, IN After a cool and refreshing weekend, a more active weather pattern lies ahead for the upcoming week!

Capture

Finishing Up The Weekend Nicely:  It’s a chilly start to your day across central Indiana. We note several communities down into the 40s again this morning.  Certainly this weekend has gotten many into the fall mood (myself included).  We’ll finish up the weekend nicely with dry skies and highs reaching the middle 70s. It’ll be very pleasant for you tailgaters out there!  We’ll notice increasing cloudiness through the day and a broken line of showers (perhaps a rumble of thunder) will move through central Indiana tonight into the wee morning hours Monday. Rainfall numbers aren’t impressive with this weather maker, as most should see a tenth to a quarter inch of rain on average.

Dry and Pleasant: A dry, pleasant air mass will build in on Monday. Early clouds and any left over rainfall should exit during the morning hours with sunshine building in during the afternoon. Tuesday looks very nice with sunny skies and very comfy’ temperatures!

Turning More Active:  We’ll turn up the thermometer and humidity levels for the middle and latter portion of the week as our dominant air flow shifts around to the southwest in advance of our next (more significant) weather maker. With the increasing humidity, scattered showers and thunderstorms will return to the forecast as early as Wednesday and Thursday, with more widespread shower and thunderstorm activity expected as a cold front gets closer to the region. In fact, we think as much as one half to three quarters of an inch of rain is possible on Friday, in association with this cold front. As the front passes the region, cool high pressure will build back in setting the stage for another delightful, early fall like weekend!

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