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Arctic Blast Arrives

Posted By · November 12, 2014 at 3:23 am

Wow! What a start! We are about 20 degrees colder than yesterday here in Central Indiana. Wear the winter coat today, we won’t warm up much today, in fact our high will only be 39 degrees. Yesterday our high was 61 degrees!

There are 2 chances for light snow in the 7 day forecast. A few snow flurries or an isolated snow shower will be possible Thursday, with a slightly better chance for light snow Sunday and early Monday. We will keep you updated on those snow chances and this winter chill in November.

At this point, it appears the cold air will stay with us well into next week. Remember to upload the WTHR Skytrak Weather App for the latest updates on the forecast.

On This Date in Central Indiana Weather History……
1992 : Heavy rains cause flash flooding in Clinton.


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A Cold Change

Posted By · November 11, 2014 at 10:12 pm

The colder air is here and it is here to stay.  Temperatures have fallen from near 60 degrees around noon Tuesday into the lower and middle 30s, by late Tuesday evening.  Skies will clear overnight, as temperatures fall into the upper 20s.   There will be some sun on Wednesday, but it will be a cold day with highs in the 30s.  This is about 15-20 degrees colder than average and this trend will continue over the next 7 days at least.


We are only forecasting highs in the 30s for the rest of the week and into the weekend.  Low temperatures will be in the upper teens and lower 20s.  These numbers are more typical for December and January.

There are 2 chances for light snow in the 7 day forecast.  A few snow showers are possible on Thursday, with a slightly better chance for light snow late Saturday night and Sunday.  We will keep you updated on those snow chances and this winter chill in November.


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Cold Arrives Marking Active Pattern Change

Posted By · November 11, 2014 at 2:37 pm

The time for talk is over as the much advertised Polar Plunge continues its path across Central Indiana.  Though not as dramatic as the rapid temperature falls in the Rockies yesterday, the wind will make it feel 30-40 degrees colder this evening than the early day highs in the 60s.


At time of this blog posting eastern Indiana remains in relatively balmy air, but that changes big time this evening.  The Indianapolis metro area is in the 40s now behind the front and the temperature tumble continues into the 30s by 5pm.


A band of showers along the cold front may mix with snow as the cold air catches up to the moisture.  Though no accumulation is expected it serves notice of the shift to a January-like air mass that will hold a tight grip on a good chunk of the eastern U.S. 10 days or more.


A persistent northwest fetch off of Lake Michigan may deliver lake effect flurries or snow showers later tonight into Wednesday morning…. primarily for areas northeast of Indianapolis.  Lows tonight fall into the 20s and wind chills early tomorrow will be in the teens.


Any early morning sunshine Wednesday should give way quickly to a scattered to broken low-level cumulus cloud deck.  Highs will likely be below 40 degrees for the first time since mid-April.


An upper level disturbance diving across the Ohio Valley Thursday could trigger snow showers and squalls late afternoon into the evening.  At the very least it will reinforce the already chilly air and knock daytime highs into the lower 30s Thursday and Friday.


Weekend Snow Potential:  This upper level pattern is primed for cold and a few potential snow-makers.  The first of which locally shows up Saturday evening into Sunday.  Current modeling continues to support the notion of a quick-moving feature that doesn’t intensify until reaching the Appalachians.  Providing this holds we’re only expecting light snow, but possibly enough to accumulate Sunday.


Bigger System Next Week?:  We continue to watch the possibility of potentially stronger system in play next week.  In fact both medium range GFS and EURO models show a deeper surface low (stronger system) impacting the Ohio/Tennessee Valleys Wednesday/Thursday of NEXT week.  The images below show surface pressure (black lines) and precipitation INTENSITY and not type.  Current modeled temperature profiles during that time would support winter precipitation and snow accumulation in Central Indiana.  However it’s 8-9 days away and will likely change between now and then.  But we’re watching it and will post updates as needed.


With or without accumulating snow we’re not missing out on an impressive cold snap for mid-November.  As I’ve mentioned many times in the past few days… we’ve certainly had colder temperatures but the departure from normal and duration make this noteworthy.  Have a great evening and a big THANK YOU to those who have served our country.  Happy Veteran’s Day – Sean Ash


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Tuesday Rain and Colder Air on the Way

Posted By · November 10, 2014 at 4:34 pm

It is a mild start to the week, with Monday highs in the 60s.  This is as warm as it gets.  The SkyTrak13 Weather Team is tracking a major weather pattern change this week.  The change will begin on Tuesday with rain and falling temperatures.  Tonight will be mostly cloudy, breezy (winds S 10-20mph) and mild.  Overnight temperatures will be in the upper 40s to near 50 degrees.  Tuesday will start dry, with rain chances arriving late morning.  Here is the timeline with FutureTrak13.  We are forecasting the steadiest light rain to fall from about noon through 6pm Tuesday.

RPM RPM1 RPM3 rpm4

The rain will develop along a cold front and there is cold air behind the front.  Temperatures will be in the middle and upper 50s, before the rain arrives.  Temperatures will fall into the upper 40s by late afternoon/early evening Tuesday and will continue to fall.  We are in for a blast of cold air.  Highs will only be in the 30s for the rest of the week and into the weekend.


Wednesday will be dry and chilly.  We are tracking a chance for a few snow showers on Thursday.  This SkyTrak13 7 Day Forecast looks more like the middle of winter.  Highs will be in the  30s and lows in the 20s.  There is another chance for snow on Sunday.  We will keep you updated on this blast of cold air and snow chances.



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From 60s To January-Like Cold This Week

Posted By · November 9, 2014 at 5:14 pm

Hope you’re enjoying the weekend despite the limited sunshine we’ve seen in Central Indiana.  Highs Sunday made it into the lower 50s but temperatures should soar well into the 60s Monday as a south-southwest wind teams up with sunshine.


You can see that warmth downstream in Missouri and central Illinois.  You can also see the well advertised chill we’ll have later in the week lurking north side of boundary along the U.S.-Canadian border.


Tonight and Monday:  Expect clouds to linger around this evening and overnight with seasonably cool lows in the upper 30s.  The passage of a warm front Monday ushers in a taste of warmer than normal air.  Highs will range from 60 in eastern Indiana to the mid/upper 60s in western Indiana.  Wind gusts late Monday may approach the 30-40mph range.


This is in response to a developing fall storm that will drop accumulating snow from the Dakotas into the upper Great Lakes.  Windy conditions continue into Tuesday as the center of the storm passes to our north.  Showers become likely along a cold front on Veteran’s Day and some thunder is possible.  After highs briefly hit the upper 50s Tuesday, colder air filters in behind the front Tuesday night.


Wednesday morning marks the beginning of a prolonged cold spell that will last a good 7 to 10 days… and possibly longer.  During this time expect temperatures to be 20 degrees colder than normal which equates to lows near 20 and highs in the 30s.


Light snow is possible Thursday and we’ll need to get close tabs on snow potential next weekend… though it’s uncertain if the cold air will suppress any systems south of the Ohio River.  Get the cold weather gear ready and have a great evening – Sean Ash

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Quiet Today & Monday, Rain Possible Veterans Day

Posted By · November 9, 2014 at 7:28 am

There will be quite an abrupt temperature swing this week as arctic air filters in by mid week.

abrupt temps


More sunshine is in store today and warmer temperatures too. High pressure will bring quiet conditions for today and Monday. Wind will turn out of the southwest today, allowing temperatures to climb into the low 50s.

sunday planner

It will be mostly cloudy this evening and temperatures will fall into the upper 30s Monday morning, which is near normal for this time of year.

Monday will be the best day of the week with mostly sunny skies and temperatures will climb to near 60 degrees. It will be a bit breezy with winds out of the southwest.

monday highs today

Changes push back in again on Veterans Day. A cold front will bring a good chance of scattered showers by afternoon with an early high in the low to mid 50s. Rain will move out by evening.


Much colder air will start to filter in on Wednesday as the coldest air of the season takes over. Afternoon highs will only climb into the 30s, feeling more like late December. The last time we had highs in the mid 30s was March 16th.

Saturday looks dry but there is a chance of rain and snow on Sunday.


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Cool Weekend, Nice Monday

Posted By · November 8, 2014 at 7:21 am

A cold front is bringing a few sprinkles across north central Indiana this morning. Cooler and drier air will filter behind the cold front later today. In the meantime, there is a chance of a few stray light showers through early afternoon. If you are heading to the Purdue or IU game today, be prepared for a sprinkle during your tailgate.


A gradual clearing will arrive later this afternoon with temperatures running close to ten degrees below normal, in the upper 40s.

saturday planner highs today

It will be partly cloudy and cold tonight with temperatures falling into the upper 20s by morning.

Sunny and dry conditions return for Sunday with breezes out of the southwest and a high near 50 degrees.

Monday will be the weather pick of the week again, with partly sunny skies and temperatures will climb into the upper 50s.

Another system arrives on Tuesday, Veterans Day, bringing a chance of scattered showers to central Indiana and falling temperatures. Temperatures will start off in the low 50s during the morning and fall into the mid 40s by late afternoon.

Arctic air arrives by Wednesday, ushering in the coldest air of the season. The unseasonably cold air will stay in place through Friday with temperatures struggling to climb out of the mid 30s.



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Weekend Forecast

Posted By · November 7, 2014 at 4:19 pm
There was finally some sunshine breaking through the clouds across central Indiana on Friday.  It will be a chilly, but dry Friday night with lows in the middle 30s.

The weekend weather system that we have been tracking for Saturday is still moving our way, but most of the rain now looks to stay north.  There will be mostly cloudy skies on Saturday and a slight chance for a stray shower.  Here is the latest analysis of the weekend with FutureTrak13 and it shows most of the rain staying north of central Indiana.



High temperatures will be in the upper middle and upper 40s north and the lower 50s south of I-70.


Expect a mix of clouds and sun on Sunday too, with highs near 50 degrees.

There will be a brief warm-up before a big chill next week.  Highs on Monday will be in the range of 55-60 degrees.  There are rain chances and falling temperatures in the Tuesday forecast.  Highs Wednesday through Friday of next week will only be in the 30s.  We will keep you updated.


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