Sep 17
Ah, September in Indiana… September is typically a month that features wild temperature swings. The fleeting days of summer still have just enough ‘umph left to provide a couple more…
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Sep 16
Updated 09.16.13 @ 10:50p
Zionsville, IN We’ll enjoy a cool and refreshing start to your Tuesday and this is only the beginning of what will be an absolutely “brilliant” weather day here across central Indiana. We discuss increasing warmth, humidity, rain chances, and look ahead to your weekend below!
Brilliant Tuesday: The title pretty much sums it up! We look for bright blue skies today and very pleasant temperatures. After a cool and crisp start, temperatures will moderate into the lower 70s for afternoon highs. If you can be outdoors today, make it happen!
Heat and Humidity Increase: A warm front will lift north across the region Wednesday and as this front moves through, look for clouds to increase along with a widely scattered shower or thunderstorm. As of now, we bracket the morning and early afternoon hours Wednesday for the best chance of getting wet, and even that isn’t a great chance. We think only 20%-30% of the viewing area receives rain Wednesday. Otherwise, we’ll feel a much more humid and warmer air mass by the afternoon. This continues Thursday with a scattered shower. Highs Thursday will draw close to 90°.
Friday Cold Front: A cold front will slice into the warm and humid air mass of mid week and this will lead to the best chance of significant, widespread rainfall we’ve seen around these parts in weeks. At this stage, as much as 0.50″-0.75″ looks likely across all of central Indiana Friday as the front moves in. Best chances of getting wet appear to arrive Friday evening (I know, I know…right in the middle of high school football). We’ll continue to monitor.
Cool, Dry Weekend: If you enjoyed last weekend then you’re sure to fall in love with this upcoming weekend. A cooler and drier air mass will move in for the weekend along with lots of sunshine and dry skies.
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Sep 15
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.
Watch how the troughs (cooler air) and ridging (warmer air) correlate with the temperature pattern in our official forecast (posted earlier this morning).
Monday
Wednesday
Friday
Saturday
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Sep 13
Short term drought conditions continue to expand and worsen for many communities across central Indiana. From an agricultural stand point, negative impacts (slightly to moderately so) are being experienced on…
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Sep 12
Updated 09.12.13 @ 4:59p
Zionsville, IN A series of cold fronts sweep the state tonight. This will help usher in our first true taste of autumn for the season, just in time for another special football weekend ahead! Don’t get used to the chilly conditions as resurgent heat, and better rain chances lie ahead. We discuss below!
Chilly Air Blows Into Town: A series of cold fronts are in progress of blowing through central Indiana. One is already through with another waiting in line. This secondary cold front packs some chilly air behind it and will result in temperatures in the upper 40s for many come morning. Talk about stark contrast from heat indices in the 100s earlier this week! We’ll note some instability-driven puffy cumulus clouds forming during the afternoon, but these will clear and give way to a calm, chilly night. Overnight lows Saturday morning will fall into the 30s for outlying areas.
Weak Cold Front Sunday: A weak cold front will lead to afternoon clouds and the threat of an isolated thunderstorm Sunday afternoon/ evening. We think 80-90% of the coverage area remains rain-free for now, but we’ll keep an eye on things and update accordingly. This boundary will be responsible for keeping things dry and pleasant through early next week.
The Heat Returns: While we don’t anticipate anything nearly as brutal as this past week’s stretch of heat, the thermometer will flirt with the 90 degree mark once again come Wednesday. Strong southwest winds will blow a warmer, more humid brand of air north bound for mid week and have overnight lows only falling into the lower 70s. A cold front will approach the region late next week, leading to what appears to be some scattered to numerous showers and thunderstorms by next Thursday.
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