Good evening gang. I know all the focus is on the winter storm that will impact the region this weekend… but that little band of light snow we have talked about for several days now will show up tonight for some areas. The main threat for a period of light snow will be late tonight into very early Friday across northern Kentucky.
Anybody can see a few flurries during this time… but areas along and north of I-64 will be fair game for a light accumulation of snow late tonight. Areas along the Ohio river from Covington to Ashland stand the best chance for a little snow on the ground in time for the morning commute.
A lot of the stuff on regional radar is not hitting the ground as of right now…
Everything is still on track for the weekend storm and there is a chance of an upgrade for parts of the state. The models are showing a quicker transition from rain to snow Saturday night and some very good backlash snows for Sunday and Monday. The winds, snow and arctic cold will be something to behold for many areas.
The NWS in Jackson had a great write up on the weekend storm in their afternoon discussion…
…POTENT WINTER STORM STILL ON TRACK FOR SUNDAY INTO MONDAY…
THE MODELS CONTINUE TO BE FRUSTRATINGLY INCONSISTENT WITH THEIR
SOLUTIONS FOR THIS UPCOMING SYSTEM. EVEN RUN TO RUN CONSISTENCY HAS
BEEN HORRIBLE. SPECIFICALLY…THE ECMWF HAS FLIPPED FROM A NORTH TO
SOUTH SOLUTION AND BACK OVER THE PAST FEW RUNS WHILE THE GFS MADE A
TRANSITION TO AN EXTREME NORTHERN STORM TRACK THAT REMAINS AT ODDS
WITH THE NAO AND AO INDICES ALONG WITH OTHER GUIDANCE. ACCORDINGLY
HAVE MAINTAINED CONTINUITY WITH OUR GRIDDED FORECAST AS MUCH AS
POSSIBLE. IN REALITY THESE MODEL DIFFERENCES…WHILE LARGE…WILL NOT
MAKE THAT MUCH OF A MATTER IN TERMS OF SENSIBLE WEATHER. THIS IS DUE
TO THE FACT THAT TIMING FOR THE ARRIVAL OF THE ARCTIC AIR AND THE
BRISK/GUSTY WINDS ACCOMPANYING IT ALONG WITH THE RESULTANT SFC
AMPLIFICATION TO THE EAST WILL BE ROUGHLY THE SAME IN ALL SCENARIOS.
THE DIFFERENCES WOULD BE MOST NOTABLE IN THE SUNDAY/SUNDAY NIGHT TIME
FRAME WITH QPF AND THUS SNOW AMOUNTS. WHILE A FOCUS FOR MOST OF THE
PUBLIC…THE DIFFERENCE BETWEEN 2 INCHES OF BLOWING AND DRIFTING SNOW
AND 4 INCHES ARE NOT THAT LARGE IMPACT WISE COMPARED TO THE
ACCOMPANYING WEATHER. FOR NOW WILL CONTINUE TO LEAN TOWARD THE LOWER
END AMOUNTS IN KEEPING WITH THE INCONSISTENCY OF THE MODELS. STILL
EXPECT TO SEE SNOW SHOWERS LASTING OVER THE HIGHER TERRAIN IN THE
EAST INTO THE MIDDLE OF THE NEXT WEEK WITH ACCUMULATIONS FROM THIS OF
THE LIGHT AND FLUFFY VARIETY GIVEN THE VERY COLD TEMPERATURES…AGAIN
OF LESS CONSEQUENCE THAN NORMALLY INDICATED BY THE IDEA OF
ACCUMULATIONS.
SPECIFICALLY FOR THE UPPER LEVEL MODEL ANALYSIS…THIS CYCLE OF RUNS
PLACES THE GEM WITH THE SLOWEST AND MOST SOUTHERN SOLUTION BRINGING A
BRIEFLY CLOSED TROUGH THROUGH THE OHIO VALLEY SATURDAY NIGHT AND
SUNDAY MORNING. THE GFS REMAINS MOST OPEN AND FASTER BY ABOUT SIX
HOURS WITH THE LATEST ECMWF IN BETWEEN. INTO SUNDAY NIGHT THEY ALL
EVOLVE THE TROUGH INTO A DEEP AND LARGE FULL LATITUDE ONE WITH
VARIOUS PLACEMENTS FOR THE ACTUAL CLOSED CENTER…GFS FURTHEST
NORTHEAST AND DEEPEST WHILE THE GEM AND ECMWF SPIN THEIRS CLOSER TO
EAST KENTUCKY. WHETHER THESE CENTERS HOLD IN PLACE OR RETROGRADE INTO
TUESDAY…THE VERY DEEP NEGATIVELY TILTED TROUGH WILL PIVOT JUST
NORTHEAST OF KENTUCKY MAINTAINING STRONG CYCLONIC FLOW FED BY LAKE
AND SOME ATLANTIC MOISTURE RIGHT INTO OUR FAVORED UPSLOPE AREAS. THE
PATTERN STARTS TO FLATTEN OUT HEADING INTO WEDNESDAY AS THE TROUGH
ROLLS OVER ON ITSELF AND LIFTS SLOWLY OUT OF THE AREA. HOWEVER…THE
REPRIEVE FROM PCPN WILL BE BRIEF AS A SOUTHERN STREAM SYSTEM LOOKS TO
APPROACH THE AREA FROM THE SOUTHWEST FOR THURSDAY.
AS FOR SENSIBLE WEATHER…THERE IS A CONCERN THAT THE RETURN OF
MOISTURE AND PCPN ON SATURDAY WILL SEEP IN FAST ENOUGH TO CATCH THE
COLDER VALLEYS AND COMBINE WITH RELATIVELY DRIER AIR TO WETBULB FOR A
TIME. ACCORDINGLY…HAVE ADDED A POSSIBILITY OF MIXED PCPN WITH SLEET
AND A TOUCH OF FREEZING RAIN TO THE GRIDS EARLY SATURDAY. THE RAIN
AND WARMTH MOVING NORTH WILL WIPE OUT THE COLD POCKETS QUICKLY ON
SATURDAY AND RESULT ALL RAIN OVER THE AREA LATER IN THE DAY INTO THE
NIGHT…THOUGH THE ARRIVAL OF RAIN WILL BE SLOWED IN THE FAR EAST.
THE SLIGHT TIMING UNCERTAINTY OF THE ARCTIC COLD FRONT PASSING
THROUGH SUNDAY MORNING WILL ALLOW FOR LOWER CONFIDENCE FOR THE ACTUAL
TRANSITION TIME TO SNOW DEPICTED IN THE GRIDS…BUT THE GIST IS THE
SAME REGARDLESS OF WHICH MODEL EVENTUALLY VERIFIES. RAIN WILL QUICKLY
MIX WITH AND CHANGE TO SNOW FROM WEST TO EAST ON SUNDAY MORNING WITH
TEMPERATURES FALLING INTO AND THROUGH THE 20S DURING THE AFTERNOON AS
THE SNOW CONTINUES. GUSTY SOUTHWEST TO EVENTUALLY NORTHWEST WINDS
ACCOMPANYING THE ARCTIC FRONT AND IN ITS WAKE WILL BLOW THE SNOW
AROUND AND LIKELY REDUCE VISIBILITY AT TIMES WELL BELOW A MILE.
NEEDLESS TO SAY…SUNDAY WOULD CERTAINLY BE A GOOD DAY TO STAY AT
HOME. THERE ALSO IS A GOOD BIT OF UNCERTAINTY WITH THE POST FRONTAL
DRY SLOT AND THE TIMING OF THE ARRIVAL OF THE SYSTEM/S WRAP AROUND
SNOW LATER ON SUNDAY INTO SUNDAY NIGHT…BUT IT WILL MOVE IN BEFORE
TOO LONG AND ALLOW SNOW SHOWERS TO PICK UP AGAIN FOLLOWING A BRIEF
REPRIEVE. THE SNOW SHOWERS WILL THEN CONTINUE FOR OUR UPSLOPE
AREAS…MOST OF THE CWA…WELL INTO TUESDAY WITH THE HIGHER TERRAIN
IN THE FAR EAST LIKELY TO SEE THE MOST ACCUMULATIONS OF THE FLUFFY
SNOW…BUT PROBABLY STILL MEASURED IN JUST AN INCH OR TWO
ACCUMULATION PER A TWELVE HOUR PERIOD. THE WINDS AND THE BITTER COLD
AIR WILL ALSO YIELD WIND CHILLS TO AROUND OR BELOW ZERO AT TIMES FROM
LATE SUNDAY INTO TUESDAY MORNING.
REGARDLESS OF IF THE SYSTEM EVENTUALLY TAKES A TRACK THAT MINIMIZES
THE THREAT OF SIGNIFICANT ACCUMULATING SNOWS THIS STORM IS ONE NOT TO
BE TRIFLED WITH. PLEASE STAY TUNED TO YOUR LOCAL MEDIA OR THE
NATIONAL WEATHER SERVICE FOR ADJUSTMENTS TO THIS FORECAST AS THE
STORM PATH BECOMES CLEARER.
Mr. Greif is a heck of a forecaster and his words carry a lot of weight with yours truly. I will have a full update later tonight and will give some quick updates via twitter. Take care.
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Thanks Chris. I am holding out hope for the Big One.
Dang! Thought I would be first poster. Shoot. Last time I go running a few miles and then put up Christmas lights in the dark…
I could have been number one!
That NWS post needs one of them-there Google language translators 😉
Lot of fancy talk for:
1. Models are whack
2. Being conservative for now
3. Blowing snow and cold winds
🙂
what does this mean for the Louisville area? I live here in Louisville and have a busy weekend ahead of me and was just wondering if anyone knew what exactly all this will mean for Louisville…thx.
Deer Chris, i be lookin at your blog in da middle of da summa and aint nobody on here but win its bout ta snow evrybody n there cuzzin is on here wateing ta see what ya got ta say n i look on here win its hot outside but there aint no reason ta post nothin on here anyways cuzz aint nobody else on here but i do look forward ta see what ya got ta say n cant wate fa dem updates ya got all the time you buy far the best weatherman in this hole region n i cant wate ta see if we git a ton of snow.well i gotta go cuz my 17 dogs is acting crazy do you think they no its gittin redy ta snow like crazy or do ya think maybe they all barkin at the same time cuz they wanna go to the bathroom at same time?im gonna go out on a limb and predik we git over 30 foot a snow this wnter cuz of what my neybor said bout how you can tale its gonna be a big winter cuz of da way birds act win they git round da birdseed that he be puttin down.stay warm folks an ill chek back with ya i the mornin afte i get done cleanen up after the older dogs that cant hold there blatters cuz there old and got to pee all the time in the house.
I know some of us are down that we won’t get the “big” snow, but my gut tells me a lot of people, even us here in KY…won’t forget this storm.
It kinda reminds me of the Mother’s day storm from two years ago that brought all that severe weather to eastern Kentucky–with rain and lots of wind—-except this time it’ll be happening with snow. Accumulations may not be much, but this is gonna be a dynamic storm….worth watching from the inside of the comfort of your home. 🙂
Means hold on for a more detailed forcast once the front comes over the Rockies. To see a more clear path. But will probally start with a lot of rain on Saturday, QUICKLY changing to snow SAT night and the wet roads will become real slick fast. With snow Sat night into Sunday A brief breakbefore wrap around snows arrive Sun Night which could put down (X) amount of snow (X) is yet to be determined, depending the track of the storm. My opinion for now. But you know what they say about opinion’s
Usually, it means that we will have almost no snow. But, we don’t give up our dreams here at CB’s without a fight!
Stereotypes stop being funny at some point.
I too am hoping for a big snow, but since we are this early in the season, my thoughts and prayers are that everyone stays safe and warm through whatever happens, rain…snow…sleet..or freezing rain. There is so much more to be concerned with at this time of year….I’m not dogging so please no one say that, i’m just to the point if it happens it happens great, and if not there are bigger problems than not getting a foot of snow. (still hoping for snow) 🙂
Chris, WXman, Shane, Mitch or someone who knows,
What does the humidity have to be in order for the precip to make it to the ground and not be virga?
Chelle, I could not have said this any better. This is the first time I can ever remember that I feel the same as you stated: if it happens, great!…and if not…
Of course, if it does happen, I will be a happy camper…only if we still have that electricity…which we can all,
even the environmentally conscious, thank coal and the miners for.
BubbaG, that’s okay…you can still be our number one Devil’s advocate…and I mean that in a really nice way because you are always positive…
Even when you are advocating… 🙂
Relative humidity is the measure of moisture in the air. If it is too low, it can prevent precip.
I would not change any plans as of now. I would treat it like an outdoor summer event knowing that there is a threat of a possible isolated thunderstorm.
Really?? Why post something? You are so annoying…
usually if the RH is the same as the Temp. you have full saturation…
Hey guys what time do the new models come out?
Is there any chance this system will be an ice storm? That is the last thing I want to see.
Okay so I went to the kymesonet site and found the humidity but not the relative humdity. Would this be on the national weather service website?
00z NAM comes in and basically sticks to it’s previous couple of runs, except maybe even a little further north. Still showing a decent snow event, but for some reason, I’m still not understanding how the bulk of the moisture appears to be in KY instead of around the center of low pressure. Maybe I’m just not getting something, but it still just looks a bit weird to me. This event on paper looks like a severe weather event in the summer, except with arctic air catching up with the precip shield. Just an overall weird look to it on the NAM.
WELL …any takers on the new run of the NAM.. looks to be emphasizing more energy in the southern low and not so much in the northern one…confusion,confusion…
Just as Chris stated in one of his tweets about the gfs, the 0z nam brings the colder air in sooner for a sooner changeover to snow.
Hey Justin, sorry about that previous post, I thought you was criticizing me for a simple post. I understand what you mean now. So I apologize.
No problem brotha. Just wanted to clarify myself.
I am a tad of an advocate 🙂
Not too many posts tonight. Peeps may have forecast fatigue. Kind of like riding a roller-coaster too much.
NO. the system there is a slight chance for ice is late next week.
Only problem is surface temperatures, at least here in Eastern KY. While at around hr 60, 850 temps drop below freezing while surface temps are somewhat mild, especially with a speckle of 40 degree temps in south central KY. By the time surface temps drop below freezing, a lot of the heavier stuff will be out of here.
Here is a look at surface temps at hr 60, right when 850’s begin to crash.
http://raleighwx.americanwx.com/models/nam/00znampmsl10mwinds2mtemps060.gif
yeah this run has the cold catch the precip shiled out east for a few inches of snow before the upslope.
win is the storm gonna hit lextown chris n ware can isee these models everbody is talkin bout i havent seen one picture of women anywhere n i ben on here all day lookin.
What’s the temp looking like early next week? Still looking like highs in the teens and lows flirting with 0?
we need about a 30-40% increase in RH before precip can hit the ground.
Chris just now said the same thing on twitter about the nam bringing cold air in sooner. We may get several inches before Sun. night.
Nice to here from you Mitch. I check your blog everyday too.
It was very interesting that when Chris said the NAM 0z is bringing the cold in quicker with a quick transition to snow. He didn’t add early Sunday morning. he just said Saturday night. That’s okay with me.
It most certainly is.
Wasnt the 0zGFS and the 12z GFS supposed to come out at 10:30 or is that 11:30 eastern time?
Hey, guys, I love waffles as well as the net person, but, we are not really going to know “how much” and “who” until a few more runs. So, I am in agreement with Chelle…would be great to see it, but if not, well, okay. As long as everyone is safe and warm, it will be fine.
i DO, however, believe that no matter how it pans out, it is gonna be brutal on Sunday and Sunday night. Wind whipped snow and frigid temps are not a good place to be stranded. If you must travel, please be prepared with an emergency kit in your vehicle, and a fully charged cell phone battery, in case you need it.
It’s Friday Eve….and bedtime. Night all. Anxious to see what Chris says in the AM. Visions of sugarplums danced……
Ok fellow bloggers/ees I am SO sorry for asking this, because it usually gets under my skin when someone else does it, but what does Christmas look like……cold and snow or sunny and 80 lol 🙂
Where is Mitch’s blog…I’m assuming it is weather. I’d love to check it out too.
Cold and probably snowy
0z gfs has the cold catch the precip shield.
i enjoy the uncertainty, thrill and pure fun leading up to a possible big event!! i am no met, nor do i know the first thing about reading the maps, so i come here for it..chris’s word comes first with the knowledgable regulars a second. BUT, i am absolutely worn out from this, i am just about to pull my hair out ..i get very excited and let down with every run and i’m about to the point of this: with the “old school” snows, many were “forcasted” with the “old school” approach, which was, open a door or look out a window, and what you see is what you got!!!!!! lol, i’m in clay co. and want a thumper like everyone else, but i too am about to go bi-polar because of this…come on chris, give us some good news in the next update…:*)
27 newsfirst just forcasted that accum’s would be 2 inches or less!! 🙁
it also has a significant freezing rain event next thursday, this should be watched, the ecmwf has has this in several runs though with less qpf.
cold and probably snowy
Seriously, I want to ask you a question. If you’re a met, what direction do you even begin to go in at this point? I mean we’re 2 days from the event and you still basically have no model agreement and every 6 hours there’s a change. I just don’t see how you can begin to forecast this thing yet.
GFS has been all over that sleet, frz rain event for several runs now. Suface temps are below freezing and the temps at 850mb are above 32
I read this blog all winter but I hardly ever post…I get worked up like the rest of you and want a massive blizzard around here!! I get so anxious I check this blog every 10 minutes!!! Ha! Chris just tweeted about possibly upgrading….PULL THAT TRIGGER to continue with the theme of this storm:)
Upgrade. better safe than sorry
Snow Princess…don’t worry about that..my personal observation is they are always very conservative up to the last minute..Go with what Chris and these other guys say..they know their S…(snow haha)..truly..I wish I were a met..I missed my calling haha.
dude its people like you who make this blog worth reading LOL~~!!! even when another cold kentucky rain is about come down on us i can find some humor here!
just noting trends in the modeling at this point, as mike pointed out the modeling for several runs has showed frz rain. this should be watched but in terms of forecasting it is way to early to have a high confidence of what will happen late next week.
00z GFS snowfall map. Pretty nice totals for the mountains!
http://wxcaster.com/gis-gfs-snow-overlays.php3?STATIONID=JKL
That map is what i was hoping the GFS would come around too. If it stay like that it would be okay with me. I would still like to have more. but I would be happy with it.
Shew. Im gettin excited & then getting sad all together. Id love to see a big snow, But am afraid its gonna miss us, and were gonna get the bottom half of it. Id love for someone, ANYONE to tell me just a little bit about whats going on! Lol… I understand Snow is gonna fall, but i just looked at the map Mike left the url for, and i went on wymtnews.com and read a weathe blog he gave a few more inches from his point of veiw. so whats gonna happen are we ever gonna get a big one or do i just need to give up Lol.. I still enjoy reading post from you all tho, some of you I recall from last year & It got pretty intense on here last year, so im just excited to be on here with you all again 😉 Hope you all have a great Night!!!
http://www.youtube.com/watch?v=1LEbi0o-Q_A My thoughts on the upcoming storm.
I was just thinking about Fats Matter to Your Health and you’ve really helped out. Thanks!