Posting this a couple day’s later then I usually do, because I have been rather busy lately with other happenings and well, life. Already over the last month it has proven to be quite a wild month in weather! Many areas have received there first snowfall from the Plains to the Ohio Valley and Mid Atlantic States! While it may have been under and inch it was still earlier than average for snow to fall and the colder temperatures were also way below average. South Dakota and North Dakota and Minnesota as well as parts of Nebraska have also received significant snowfall already and is off to a very fast start!
Honestly not much has changed from the last outlook, therefore I will not go over the same things over and over in graphics that I posted. I will go over a few key factors such as the NAO, climate pattern such as El Nino, La Nina or Neutral weather pattern and of course the current fall pattern setting up and the drought across the country.
Current drought pattern;
Compare that to what we had in early September;
We have seen HUGE improvement in the Great Plains and Ohio Valley in the last few months! All thanks to large storm systems that have dumped lots of moisture over the same areas! Why does this have an effect on the winter? Because the more wet the top soil is the more moisture will be able to be drawn up out of the ground into the sky. Of course this isn’t everything when trying to ATTEMPT to predict what we will see over the winter but you can generally see the wet pattern across the country and where it might continue over the next winter.
Here is the precipitation anomalies from September through October this year just to show you where the wet pattern has set up this Fall!
The wet pattern has generally set up shop over the drought areas! (Positive blue ranges) How about that! That is why they are recovering so well! I included some of this area in my winter forecast graphic. Notice the southeast United States hasn’t seen much in the way of precipitation lately most likely due in part to a southeast ridge.
This is a VERY hand forecast graphic for predicting the NAO over the next several months into winter time! As of right now you can see that we are in the positive range and that we are about to take a sharp drop into the negative range later on this week. And because of that an arctic outbreak will be likely across the Great Plains on east to the northeastern United States! Take a look beyond that time frame on that map…you can see that most of the range goes into negative range with a HUGE drop in early January. Usually a negative NAO means frequent cold air arctic outbreaks and plenty of cold air available for some snowfall!
Typical NAO jetstream;
As I described above this is what the most likely result would be. Several arctic blasts likely over the eastern 2/3rds of the nation!
EL NINO LA NINA OR NEUTRAL?
As I have been saying all Fall so far, looking like this winter will feature a neutral state in the climate! Earlier in the summer it looked like we might make a run at an El Nino but things quickly changed as they do, because its the weather but of course! We even have quite a few members in the negative range would maybe indicate a very weak La Nina? That would be very interesting! The southern jet looks to be active but not too active this winter as such an El Nino would be.
THE MAP – WHAT YOU REALLY WANT TO SEE!
I have NOT changed the forecast too much, slightly move the above average snow further east in the Ohio Valley and the Great Plains but pretty much look’s the same. I highly expect this winter too be very interesting with extreme wild swings in temperatures, more than average. I also expect a few severe cold air outbreaks from the Missouri river on east to the northeastern United States, with Alberta Clippers becoming plentiful and dropping a quick 3-6″ here and there. Larger storm systems will take shape and pound parts of the Plains and Great Lakes as well as portions of the Ohio Valley. The storm systems look to really get going and bomb out as they head towards Michigan . Lake effect snowfall will be rather extensive this winter. The deep south will experience a couple really good cold snaps along with icing potential for a couple major storm systems especially later in the winter time! All in all we will continue to take back what a horrible snowless winter it was a couple years ago when the temperatures I can recall were in the 60s in January! Well the final winter forecast has been issued so please share along with your friends and have a great week!
Hello everyone and welcome to the second update to Snow Day’s winter forecast 2013-2014! The last outlook featured an even more return to winter from last winter and I don’t see much change regarding my first outlook! So let’s get started shall we?
The United States has been getting some MAJOR drought relief over the past several weeks with this latest updating showing a huge recovery and even Texas now getting some huge relief from the past rains over the last day or so! Places like Nebraska, Kansas and Iowa as well as Missouri has seen the biggest turn around with the increased moisture. Why does this matter? We are seeing certain wet areas take shape across the country with the first being from the Great Plains eastward to the Ohio Valley and then from the southeast and through New England States. And usually if you have wetter soils on the brink of winter that usually is a good sign pertaining to winter.
As you can see we are at the point in our solar cycle where we are leveling off and about to head into a solar minimum especially come January 2019. But as you can see, we never made it too where the forecasted level were at the top, the downtown turned early. Usually when you have a low amount of sunspots the NAO favors to be in the negative range and the winters during low sunspots are usually colder than the ones without. I will go into the NAO next.
The NAO and whether it is negative or positive is a huge deal when it comes to how the winter behaves. Recently we have seen a few ups and downs with the NAO into the negative phase and we are starting to see more of that now as we head into winter which is what I like to see for cold air outbreaks.
Here is a climate model forecast for the NAO through the winter;
As you can see we have our small ups and downs but the downs are more severe than the ups and as you can see the forecast is for a negative NAO will reign over this winter or at least until January because thats when the cutoff is.
This is the type of jetstream pattern that typically forms when you have an negative NAO;
Usually you get ridging in Alaska and a blocking pattern takes shape allowing for cold air to dump into the eastern 2/3rds of the nation and that is what I am expecting many times this winter.
EL NINO, LA NINA OR NEITHER?
Like I said in the last post, I expect this winter to favor a neutral winter in terms of climate. For a while the climate models were going gangbusters on the idea of an el nino but it started slowing down and some even question the fact if it will even make it to neutral and stay a weak La Nina, but I expect a neutral type winter in the climate area.
Most of the climate models are leaning towards this as well;
The sea surface temperatures are not behaving like an El Nino as well with some colder waters still;
Compare that too a regular El Nino—we are not even close to what a normal el nino would look like;
And here is the latest CFS climate model showcasing a neutral winter;
And finally I would usually put into effect Gary Lezacs LRC cycle but last winter it did not work out as well. I can say though that the October pattern works when identifying where the main wet areas set up for the up coming winter but so many other variables can change that when it comes to the NAO and AO.
Lastly—-the winter forecast!
I am expecting quite a winter if you live along I-80 in the Plains east into the Ohio Valley! The wet pattern from last spring looks to continue through this winter making for quite a snow winter if you live in the Great Plains eastward through the Ohio Valley. This will come when the pattern is favorable for re loading of Colorado lows and Texas Panhandle storm systems. After that the pattern is expected to transition for a time to northwest flow and Alberta Clippers will overtake this part of the area. At the same time the southern jet could get active and phase with a clipper to produce some big snow producers for the northeast especially the New England states! The big story this winter will definitely be the cold weather. With the NAO forecasted to be negative most of the time the flood gates will open for arctic air especially late in the winter. The coldest areas look to be the upper Plains, Great Lakes and the northeast with below average temps bleeding south of that area. The southwest looks to be above average in temperatures and below average in precip while the PNW will see below average highs and average precip with a couple good storm systems for the area. The Black Hills and Mountains will continue the luck that started early this month so that area will be seeing some enhanced snow this winter as well. Overall not much change to the last outlook so expect more snow than last winter and much colder temperatures!
Just checked out the latest NAO charts today and it appears that ensemble members are continuing with the crash of the NAO into the extreme negative category as we head into October;
Usually this means the start of a pattern change but what kind of pattern change? The long range models are in a frenzy as I type this but one thing is for sure a pattern change will take hold as we head into the first week of October!
Hello everyone and welcome to the first installment of the winter forecast I will be issuing for this winter 2013-2014. Last winter featured a return of winter across much of the country as promised by our winter outlook. Let’s first take a quick look at our winter forecast last winter.
Comparison of what really happened;
Ok so I did horrible on the temperatures for last winter, but it did seem a lot colder than the previous winter, so thats a plus.
I did much better with the precipitation forecast over the country with the heaviest moisture falling over the Great Plains to the eastern United States.
Winter Forecast 2013-2014 : Let’s keep this short
Due to it only being September, and things still evolving I will go over the winter forecast very briefly and the next two outlooks will be progressively detailed.
Climate : El Nino or La Nina? NEITHER?
That’s right folks, the climate is trying to make a comeback towards El Nino this winter, but I dont think it will succeed. I think it will fall right in the neutral category and possibly even as high as +1 on the charts.;
The southern jetstream that typically forms during El Nino winters will try and form, but wont be quite as active due to the fact that I think the climate will stay in neutral state during this up coming winter, so the jetstream will be a bit further north.
Another factor going into next winter is the solar. We are still on our downglide from solar maximum and even that wasn’t much of a maximum as it fell short of expectations and forecasts.
The peak never reached the forecasted peak and now we are starting to level off and soon we will be on our way down through the winter. Lower number of sunspots during the winter has effects such as during the 2009-2010 winter during the peak of the solar minimum. That was an historic winter for many that winter and we are heading our way to that area in the next few years. But for now, as we start heading down, this will start to have an effect on the NAO as we will start to see more -NAO readings which will in turn cause the cold air outbreaks to be more severe.
This is a sea surface anomaly forecast for the temperatures next winter with the cold favoring from the Great Plains east to the Eastern United States.
Here is another climate models forecast that looks very similar to the one above;
As you can see it favors the cold bleeding into the Great Plains states and into the Great Lakes with it having the most effect in that general area but with the extent of the cold air being less then the model above.
A look at sea surface temperatures;
Here is the current sea surface temperatures;
As you can see we still have some colder waters along the equator in the Pacific Ocean but we are starting to see warmer waters develop hence why the climate models are starting to latch on a progression into neutral/weak el nino territory this winter.
Compare that to a normal El Nino;
As you can see, HUGE difference and this winter wont be even close to a normal El Nino winter in terms of ocean temperatures.
As you can see, we are way better off than last summer and way better off than last fall. Yes we still have a drought in a large part of the Great Plains states but its more of a short term drought now and this summer areas have been receiving more moisture and I think that pattern will continue through the winter.
The Forecast – Winter 2013-2014
As a whole, I think this winter will be big in terms of snowfall across the Great Plains and Ohio Valley, but especially from Oklahoma to Missouri and Kansas to the Great Lakes states as a semi weak sub tropical jet will interact with cold arctic air from the north to produce several hard hitting snowstorms. The northern plains will experience record breaking cold temperatures with normal snowfall over mainly the Dakotas and Minnesota where the heart of the cold will exist, A bit further south into Nebraska, Iowa, Colorado I think it could go either way with above average snow or average snowfall but the big story will be the extremely cold weather this winter being worse than last winter as a whole. The eastern United States will experience several costal storms but most of the storms will tend to ride of the App’s Mountains and miss just to the west. Below average temperatures will rule in the eastern United States with a cold southeast with a few good sizeable ice storms to paralyze the cities in the south. The southern plains will be wet this winter and cold especially in Texas as that will be the start of the jetstream to produce big snows for parts of the Plains and Ohio Valley. The west had a cold winter last winter, I think it will be the opposite but with bursts of cold bouts in between the warmth, but mainly it will be dominated by warm air this winter. Again will go more into depth with the next two winter forecasts as there is so many variables that can change. As a whole this winter will be a one to remember.
Hello everyone and good Tuesday afternoon! We are still tracking a major winter storm to hit the Great Plains with significant snowfall and blowing and drifting snowfall. The models have overall downtrended in the strength of the QPF field since last Friday and have actually move a tad south with the low pressure giving more locations in Kansas some snow as well but overall it has remained consistent. The GFS has remained the weakest with the storm totals while the NAM continues to be advertising more snowfall then the GFS. Let’s take a look at the GFS snowfall;
Has a large area of 12 inches of snow across Nebraska and Kansas with 12-14 inches across North Central Kansas. This seems to be the overall rule with all models.
The NAM is more expansive with the snow totals and even has the 12+ extending into eastern Nebraska and western Iowa. One thing we know for sure the NAM and GFS agree that the heaviest will fall in north central Kansas and south central Nebraska.
Here is my updated map;
My accumulation map will be updated tomorrow night just ahead of the storm! Stay tuned!
Good early Monday morning everyone, we are tracking a MAJOR winter storm here at Snow Day. Let’s get off talking about the 0z data.
Let’s first talk about the 0z GFS QPF totals:
The model has a wide area of .75-1.00 inches of QPF over Kansas, Missouri, Nebraska and Iowa with the bullseye across southeastern Nebraska. That would put a significant swath of 8-12″ with 12-15″ is along I-80 near Lincoln Nebraska. As this storm system moves northeast and east the snow shield begins to fall apart by Friday over eastern Iowa and into the Great Lakes as the blocking effect begins to squash it down.
0z CMC model;
The 0z CMC model is a bit less over Nebraska with once again the bullseye over northeast Kansas to southeast Nebraska from Lincoln to Omaha and this time through Des Moines and Cedar Rapids, Iowa.
The NAVY model is considerably stronger and wound up then other models with two feet of snow possible across eastern Nebraska and western Iowa.
0z NAM only goes out to 84 hours but already it is showing huge amounts over central Kansas to eastern Nebraska and central Nebraska.
At 84 HOUR it is really starting to crank up;
Bullseye is really starting to fall over eastern Nebraska with perhaps some thundersnow over this area.
One thing is for sure, the most significant totals look to be over Nebraska through western Iowa. Obviously the path is set in stone but the strength is not. How high these totals will go is still in question so stay tuned!
Hello and good afternoon everyone we have a lot to talk about so let’s first get started off talking about the clipper storm system merging with the nor’easter off the northeastern United States coastline.
First image we are looking at right here shows that we have an Alberta Clipper storm system moving across the upper midwest with snow falling behind the low in Wisconsin;
An abundant amount of cold air is funneling in behind the Alberta Clipper with the low pressure off the northeast coast beginning to take shape.
And then the merger begins to take shape between the Alberta Low and nor’easter;
The merger is taking place with colder air beginning to wrap in to the northwest of the nor’easter and the pressure gradient beginning to tighten off the coast.
And then here she is, the blizzard begins to take shape especially across and near Boston, MA.
Already by 66 hour extremely heavy snowfall, perhaps 2-4″ per hour with thundersnow and winds gusting to 50-60 mph will be common across MA.
Total snow through 66 hour;
Catastrophic snow amounts with perhaps areas that roads may be impassable due to the extensive blowing and drifting snowfall. This is a serious nor’easter and the first huge storm of the winter for this year, so please prepare for this if you are living in this area.
So looking over everything here is my first and final snowfall accumulation map;
Besides the northeast, 3-6″ of wind blown snow will fall across a good chunk of Wisconsin, with Wisconsin being one of the only winners so far this winter, the lucky spot I should say for getting in on the bulk of the snow action.
Please stay tuned for more details later on tonight with 0z model runs and if I need to update the map any further.
Good Tuesday afternoon everyone, just going to go over how this winter has started so far.
The latest December temperature and precipitation maps are out and ready to discuss over;
As you can see, an extensive ridge has been over the eastern United States for the entire half of December, with a few breaks as we headed into the last week with a storm system that hit parts of the northeast. But overall warmer than average weather has dominated from the Missouri River on east with the epicenter of colder weather over the Great Lakes. This is an average however, the last week and a half of December were quite cold over the upper half of the nation, with that area having the coldest readings but on average the United States was warmer than average with average temperatures over the western United States.
Despite the warmer than average temperatures, high amounts of precipitation have fallen over the southeast through the northeastern United States with a small area over the Great Plains through parts of Minnesota and Wisconsin. Overall the hardest hit drought areas have gotten some good moisture in December so far so that is good news. The western United States has gotten above average precipitation as well.
I have NOT done well so far with my temperature map but my precipitation prediction for this winter is starting to come out nicely.
We have the rest of this month and through March to go through, but so far many areas are below average in snowfall, but I have hope that we will get a turn around!
After about 5-7 days of warmer weather to move into the central plains and Ohio Valley as well as the eastern United States, a new series of troughs are expected to form over the western United States. The first trough that moves out into the Plains will have the least amount of cold air available but still could pack a punch somewhere in the plains. Let’s take a look at the NAO;
As you can see, the NAO has been positive for a while but as we head towards the 10th-16th the NAO will start to slide down towards negative range and perhaps even negative by the 16th. This would indicate more potential cold air to wrap into any storm systems around that time.
Most models are developing a series of troughs in the extended but I’ll post the most reliable model and that is the EURO;
The first trough or cut off low appears near the 9th of this month and as you can see, very little cold air is available at this time for this storm system. As it moves northeast more cold air will interact but I dont see a huge amount of arctic air involved in this.
After that things change;
Another storm system closer to the dates I mentioned when the NAO starts to go negative, colder air is available for storm systems around this time. Now this is way in advance but I’ve seen enough consistency to say that more storminess will occur as we approach mid month!
First off I’d like to apologize for the lack of updates recently, but enough of excuses lets get talking about what looks interesting over the next 7-10 days.
Weather feature #1
Looking at this weather feature, a blocking effect is still holding strong in the Hudson Bay Canada forcing this weak storm system to develop some snow from Kansas and Oklahoma to portions of the Ohio Valley and straight to the Middle Atlantic. It remains to be seen if it will strengthen or remain a weak wave or if it will produce any ice accumulations in the Middle Atlantic States and Carolina States.
Weather feature #2
Looking at weather feature number 2, looks like some extremely cold canadian air will pour south and southwest into the central Plains and Ohio Valley on Thursday with temperatures not getting out of the single digits and teens for highs north of I-80. Looks like this overrunning cold air will force some precipitation into deep south Texas with yes maybe some snow for parts of southern Texas if things hold true
Looking at weather feature number 3, it is looking like after a couple brutally cold weeks for the northern Plains, Great Lakes and Ohio Valley, a warm up will move into those areas next Sunday and possibly extend into the middle of the next week.
Overall, not really an active week coming up with more cold air on the way and possibly some snow for the deep south next Thursday.
Stay tuned for more updates on these!