Wednesday, September 30, 2009
"Slice" Through Storms
We'll be watching - and make sure you send us your rainfall totals and any pictures you snap to weather@kdlt.com.
Have a good night!
~KDLT Chief Meteorologist Aaron Shaffer
Big Changes Coming In Your Weather
You can see through this 4 second video clip below what kind of future rainfall our Futurecast computer models are seeing in our neck of the woods Thursday through Friday night.
After the rain is all said and done (and the chilly winds we'll be seeing of 10-20mph for most of us) we'll be looking at some decent amounts of accumulated rainfall. Look at this video clip below showing the progression of rainfall totals through the next 48 hours or so:
So - with all of that being said - make sure you bundle up and get your rain gear ready. You can see it won't rain *constantly* - but a good chunk of the day will consist of rain vs. no rain.
Have a good night!
~KDLT Chief Meteorologist Aaron Shaffer
Windy and Rainy Times Ahead
Friday Morning:
Winds could gust over 65mph. Not quite as windy out in eastern South Dakota, expecting winds from 10-25mph. But with temperatures struggling to get out of the 40's at times, it will be a chilly and raw couple of days.
Tuesday, September 29, 2009
Rain & Wind Comes Wednesday-Friday
Then comes the showers. Most of us will see rain hold off until overnight Wednesday to Thursday morning. Some showers could turn into thunderstorms, so we'll be watching those. In general the bulk of the storm will fall as just rain - with rain hanging around through Thursday and through Friday. You might remember something we talked about on the KDLT Weather Blog recently called the dry slot - make sure you watch this system because there will likely be one.
Here is what our Futurecast computer model is thinking about this upcoming storm system as far as total rainfall goes through Thursday night:
Not overly impressive, but remember that is only an estimate and only goes through the first half of the storm system. We'll have more on that system tomorrow.
Have a good night!
~KDLT Chief Meteorologist Aaron Shaffer
Monday, September 28, 2009
More On That Large End-Of-Week Storm
You may want to play this one through a couple of times. That is one computer model's idea of how things will play out Thursday to Friday. Unfortunately for you (if you have any outdoor plans or travel plans) that is a computer model we trust quite often... so stay tuned! We'll have many more updates between now and then.
~KDLT Chief Meteorologist Aaron Shaffer
Windy Today But Big Storm on the Way??
Sunday, September 27, 2009
Leafnadoes . . . Huh?
Now exactly what IS a leafnado... Well you just have to dissect the word a bit. Leaf... well, that's pretty self explanatory... Now: nado... this is the suffix of "tornado" so basically a leafnado is a swirling vortex of leaves. A very common sight on days like today. Here's a YouTube video of a leafnado someone caught... it's a bit bright, but you can kind of see it near the end of the video. I didn't coin the term... but it was a common term we used when I was in college. A good friend of mine from ISU wrote about these last year, here's his definition (thanks to the the Rockford weather blog) : "You've probably seen leaves and other small debris briefly swirling around before, typically near an inside corner to a building. Those are leafnadoes! Of course, it's a non-technical term and hardly anything to take seriously, but when I was at Iowa State, we would joke about leafnadoes every fall." (I grabbed this picture from his blog - Thanks JG if you're reading!)
Friday, September 25, 2009
Bow Hunting Opener Saturday & Winds Returning Sunday
Not a bad day out there at all this Saturday. In between noon and sunset you can see some middle 70s to the East and lower 80s to the West. Again - no wind to be concerned about toward the East at all, look at this map showing future winds starting Friday night:
You see how the arrows are all tiny & hard to see? That is the sign of good amounts of wind - nearly none. Watch what happens when we get to Sunday night at around 7pm...
Quite a change, eh? Well by Sunday late afternoon we are looking for winds around 20-30mph sustained around the area, so get ready to hang on to your hat! We cool down significantly to start out the week on Monday as well.Have a good night, and be sure to enjoy this Saturday!
~KDLT Chief Meteorologist Aaron Shaffer
Thursday, September 24, 2009
When Will This System Move Out?
While things may not pan out *exactly* as this movie would indicate - something close to that really wouldn't be a stretch. You can see showers moving in Friday morning and then moving out by Friday night.
The clearing shows up by Saturday late morning to early afternoon. Look at the possible temperatures as a result as well:
See those middle 70s? Those could be what we see for Saturday's highs assuming that clearing moves in fast enough.
Here's to that!
~KDLT Chief Meteorologist Aaron Shaffer
Trading Clouds For Wind
Wednesday, September 23, 2009
Friends By Sky
If you watch KDLT with any regularity, especially over the past week or so, you've probably noticed we've had some "friends" on our KDLT Skycam recently. Last week, it was the wasps - and this week it is a much more pleasant species: birds.
You can see we had about a minute worth of fun with these guys - with thick clouds as the backdrop. Big changes sky condition-wise from what we saw earlier in the day with some sunshine.
Meandering Low
Once that low pressure swings out of our area, abundant sunshine will return. But things don't look all that warm as another cold front looks to make its way in by Monday that has the potential to give areas of South Dakota its first frost. We will keep you updated as we get closer.
~KDLT Meteorologist Cody Matz
Tuesday, September 22, 2009
Crazy Weather Trend Continues
We've heard some reports of rainfall totals upwards of 15 to 18 INCHES of rain! That is incredible. We've barely had 15 inches of rainfall total in our area this whole year.
We'll be watching that - and talking more about the cooler weather over the next couple of days on our KDLT Weather Blog.
Have a good night!
~KDLT Chief Meteorologist Aaron Shaffer
Frost Advisories . . . Creeping Closer To Us
Monday, September 21, 2009
It's Cold Outside! How Much More Rain?
Look at this video we made showing just how much rainfall we are looking for out of our Futurecast computer model:
You can see all of the green shaded areas basically showing the best chances for accumulating rainfall. You'll likely see that pocket of no rainfall in eastern SD get filled in a little bit, while the brighter green areas will likely be tempered a bit. Also - you are probably wondering what the deal is with the cold temperatures... If you didn't watch us on KDLT on Friday night, you would have missed our video of where the jetstream is/will be. Look at this one to see what is actually happening outside:
Take a moment and check out our blog post showing the jetstream from Friday night - and compare to now. Big changes out there - and that pocket showing up right over our area is a cold dip in the jetstream... we don't kick that out for a couple of days, so stay tuned!
~KDLT Chief Meteorologist Aaron Shaffer
Major Cool Down!
You can also see there are some rather strong northwesterly winds that will only make things feel cooler outdoors. We've been spoiled with the southerly winds keeping our temperatures above average but the reality is that Fall officially begins on Tuesday, and there's no doubt that it will feel like it.
If you miss the 70s, just hold on until Wednesday when the 70s and sunshine return!
~KDLT Meteorologist Jesse Ritka
Saturday, September 19, 2009
Fine Weather and Some Fantasy Football
Keep in mind, that's just one particular model...
I'm personally kind of sad that it'll be so nice tomorrow since it is such a big NFL day. It's my first time ever playing in a fantasy football league (playing with people at KDLT), and tomorrow's a big day since my team is playing against Aaron Shaffer and he has Adrian Peterson . . . I'm a bit nervous. I'm just going to put our matchup on here, feel free to predict who you think will win between the two of us, I think that'll be fun to see.
In case you were wondering . . . my team is "GolfBallSizeHailMary" . . . nerd? Yes, I know :)
Enjoy the rest of the weekend!
~KDLT Meteorologist Jesse Ritka
Friday, September 18, 2009
Incoming Storm For Next Week
We've been talking a lot about the storm on the way this coming Sunday night to Monday morning. We made a special graphic for the blog - and check it out:
If you look closely you can see some lines that line up with the rotating "L" (low pressure system symbol). It doesn't look like it's in a hurry to go anywhere. In fact, it looks like we will see what is known as a "cut-off low" form.
The other big change will be temperature-wise. Over the past 6 days we've seen the jetstream centered over central Canada - leaving us nice and warm. It's going to change soon - check out this video below:
We'll still stay warm through Sunday - but cooler air will creep in behind that dip in the jetstream at the end of that video clip.
Enjoy this weekend's warmth, but don't get caught off guard by the breezy conditions!
~KDLT Chief Meteorologist Aaron Shaffer
Thursday, September 17, 2009
How Would You Like A 20 Foot Python In Your Backyard?
We'll be posting much more about the big cooldown on the way for next week - but for now just plan on getting outside and enjoying things before we cool down and get windier.
~KDLT Chief Meteorologist Aaron Shaffer
Wednesday, September 16, 2009
Warmer In September Than August?
Anyhow... about that warmth... We tabulated the data and came up with a few interesting statistics:
Not including today's warm high, we've seen an average high of 77.1 degrees for the month of September. Our average high for today is 74. The big story comes when you compare the past 8 days of September to the entire month of August.
It's been 0.2 degrees warmer so far these last 8 days than what is typically our 2nd warmest month of the year. Hopefully we can keep it up while we wait for that next cooldown to come in. We'll be talking much more about *that* over the next few days!
Have a good night!
~KDLT Chief Meteorologist Aaron Shaffer
We aren't the only ones seeing the cooldown
Tuesday, September 15, 2009
Big Cooldown On The Way... With Snow?
See all of those lines? Those are different "thicknesses" in the atmosphere that indicate regions of freezing or cooler temperatures. That's what we look at when forecasting snow... and they are over eastern South Dakota and Minnesota and even into northern Iowa by next Wednesday. That could mean some possible flurries by Wednesday - but don't worry, averages and records are on your side if you want snow to stay away.
We talked with some other meteorologists from the National Weather Service offices both in Sioux Falls and in Aberdeen, and here are some of the earliest stories of snowfall and reports we've come across:
One meteorologist in Aberdeen told me about September 23, 1984:
Snow fell from the early morning to the late evening hours across northwest South Dakota bringing more than a foot of snow to some locations. Camp Crook in Harding County reported 14 inches. Amounts between six and twelve inches were common across Harding and Perkins Counties as well as parts of Meade and Butte counties. Roads in these areas were slushy with icy bridges. The snow covered much of the western third of South Dakota with depths generally an inch or less.
While not quite stories farther to the South, here are some early snowfall dates and totals for the southern half of the viewing area:
- Huron on 9/18/1924 got a trace of snowfall.
- Sioux Falls on 9/18/1929 got a trace of snowfall
- Sioux City on 9/25/1939 got a trace of snowfall
- Brookings on 9/19/1991 got a trace of snowfall
Hopefully this doesn't happen. While I can't create my own weather conditions, I can only forecast them - you can rest assured I'll be sending all of my positive thoughts to keep any snow away until hopefully late November or even more preferably early December.
Have a good night!
~KDLT Chief Meteorologist Aaron Shaffer
Warm Now....Cooler Next Week??
Monday, September 14, 2009
Warm - And Dry - Start To The Week
We're almost 5 inches below average - and this is without much, if any, rainfall in the forecast over the next few days. On average we should be adding about 0.09" of rainfall per day - so we'll be likely adding over half an inch of rain to the deficit by the start of next week.
The good news for people who don't want rain, and not for anyone needing rain, is that things are looking warmer for the start of this week. Check out a screenshot from our Futurecast computer model:
Warmer weather sticks around - and that cold front you see drawn on that map represents our best chance for some showers toward mid to late-week.
Have a nice evening!
~KDLT Chief Meteorologist Aaron Shaffer
Saturday, September 12, 2009
Cutoff Low Shifting West
Friday, September 11, 2009
In The "Dry Slot" - But What Is It?
Sunshine during this massive storm system? That's right. It's because of something we call a "dry slot" and it happens quite often in these parts. They make what would otherwise be the right forecast slightly off - and are predictable only in that they will form.
A quick peek at the National Weather Service's glossary reveals this definition:
Dry Slot
A zone of dry (and relatively cloud-free) air which wraps east- or
northeastward into the southern and eastern parts of a synoptic scale or
mesoscale low pressure system. A dry slot generally is seen best on satellite
photographs.
So there you go - and that dry slot will be shifting slightly south and west over the next 24 hours as this strong, but disorganized, system moves to the West.
Check back on the weather blog over the weekend to find out more about this system!
~KDLT Chief Meteorologist Aaron Shaffer
Thursday, September 10, 2009
Futurecast... Rain & Temperatures For This Weekend
You can see the rain overhead Friday night - and that is after a few little batches throughout the day. Look at this map showing temperatures, then, for Saturday night:
We tightened up the temperature scale on here to make the changes in temperature more obvious - and you can see in the area some big contrasts from our viewing area to the Minneapolis-area and western Wisconsin.
Right now we're still looking for lower 70s for the most part on Saturday - and some areas struggling to reach the upper 60s farther toward the West.
Have a good night!
~KDLT Chief Meteorologist Aaron Shaffer
Where Will the Low Go?
Wednesday, September 9, 2009
Storms & Cooling Comes Friday
You can see in that screenshot of a map we just showed on-air that by Friday night our Futurecast computer model has rain and a cold front right over us. We'll look for showers to actually start early on in the day toward the West - with those showers fairly speedily moving farther toward the East by the afternoon.
Then we get 60s & 70s again for highs this weekend. We'll leave that for another post and wish you a good night!
~KDLT Chief Meteorologist Aaron Shaffer
Tuesday, September 8, 2009
Video Of Today's Storms South Of Pierre
That video was sent in to us from a loyal KDLT viewer in that area. Zach sends us a lot of good stuff, so hopefully he'll continue to and you will continue to watch!
~KDLT Chief Meteorologist Aaron Shaffer
Storms Today... More To Come
This was our first severe thunderstorm warning of the day toward mid-afternoon.
You can see it was near south-central South Dakota - and moving slowly. Here is our future radar from about now until 7:15pm - it will be interesting to see where it ends up and just how closely reality matches our future radar:
Still far away from Sioux Falls by 7:15pm - but it'll come eventually by the overnight hours toward the far southeast.
Have a good night!
~KDLT Chief Meteorologist Aaron Shaffer
Los Angeles Fire Timelapse
Here is a timelapse I found on YouTube of that exact thing:
Pretty impressive & scary. Hopefully we never see anything like that around the area.
We'll be watching for storms tonight, so if anything happens stay tuned to KDLT and our KDLT Weather Blog and we'll keep you informed.
~KDLT Chief Meteorologist Aaron Shaffer
Stormy Tonight
Monday, September 7, 2009
Showers Tomorrow - How Much & When? Plus, More On That Cool Weekend
You can see the showers there by 12:30am - at least according to our new Futurecast computer model. Add or subtract an hour or two from that time, and that is about when you can expect showers and thunderstorms. It seems as though this storm system will slow down and leave us with some decent amounts of accumulations:
That up to 1 inch mark is basically centered around the Mitchell area - but has the potential to shift around a little bit. In general we are looking for most people to pick up around a quarter of an inch, with locally heavier areas picking up closer to 1" of rainfall.
Then we have the chilly weekend. You saw some first glimpses of the cooler air overhead for the weekend in Cody's post below, but look at this image showing possible morning lows for this weekend:
Middle 40s are becoming a little bit too common, but that is a sign of things to come - unfortunately. Our average overnight low for southeastern South Dakota dropped to 51 today, and will continue to drop for a while.
Enjoy the rest of your Labor Day holiday and have a good rest of your week!
~KDLT Chief Meteorologist Aaron Shaffer
Nice Today.... Cool Weekend??
This is just one of the long range models but all of them are in astonishing agreement over this trough digging in next weekend. If this forecast holds and if we end up seeing a good deal of cloud cover, some areas may only see highs in the 50's this weekend. So stay tuned through out the week and we will keep you updated!!