Little change in the outlook from yesterday. Models still converging on a wet day tomorrow. Here’s the outlook:
Thickening clouds this afternoon with highs in the 43-46 range.
Tonight: A weak upper air system will push overhead tonight. That will bring in higher low-level moisture and warmer air (especially aloft). Systems like this often bring a little precipitation along. If any precipitation falls, amounts should be very light – a trace to a couple of hundredths of an inch. If it occurs, It’ll be mostly rain but some wet snow cloud mix in at the beginning. No icy conditions expected as the temperature shouldn’t drop below 36 (with some slow rising overnight. Chance for any precipitation is only 20%. If it’s going to happen, it should be between 7 and 11 P.M. tonight
Tomorrow: Cloudy with increasing chance for rain during the morning. Rain likely during the afternoon with heaviest rains likely between Noon and 6 P.M. High temperature should reach the upper 40’s.
Tomorrow night: Much colder air arrives between 8 P.M. and Midnight. Any lingering rain will change to snow and/or flurries. Most of the area should see more more than a light dusting by Monday drive time, but snow showers/flurries should hang around at least through Noon. Temperatures are likely to remain below 30 degrees all day Monday.
That’s it for now. Think rain coats, not shovels.
It’s been quite a story this week – the upcoming snow for Sunday! All kinds of guesses on local media blogs. Lots of snow lovers getting excited. The forecast models are good, but, as I’ve said too many times to count, never trust them beyond a couple of days. Failure to heed such advice has led to some really wild and crazy things being said about our weather. But, here it is Friday and the weather picture is taking on a familiar pattern and the news is not good for the snow birds.
Yesterday, the NAM and GFS started coming together on the idea that the primary storm system would be coming right over the lower Ohio Valley. That should have been a BIG hint that this was going to be mostly rain. However, the snow birds kept chirping.
The trends established yesterday grew even stronger today lending growing evidence to the rain scenario. I wouldn’t go so far as to say something stupid like “The science is settled”(one of my favorite idiotic quotes), but it is looking pretty strong. You can never be totally certain 36-48 hours ahead – things are always changing.
So, with that said, here is my idea as to our weather will unfold this weekend: Tomorrow will start cold (low 20’s) and sunny with temperatures rising pretty quickly during the morning and early afternoon. By then clouds will be on the increase for the rest of the afternoon. High should be in the lower 40’s. First divergence point for the models comes Saturday night. The GFS starts precipitation (as snow) after midnight while the NAM holds any precipitation off until Sunday morning as rain. The history of the GFS shows that it almost always “warms” systems the closer they come. So, that situation, if it continues, sets the stage for a rainy Sunday, with the heaviest rain likely between late morning until late afternoon. An early start to the precipitation could lead to a little wet snow, but temperatures should be above freezing, so little, if any, accumulation. Chance for morning snow is less than 20%.
If this system brings us any snow it will be Sunday night. As the storm system pulls out to our eastnortheast, we’ll see a sharp drop in temperatures around 10 P.M. or later Sunday. It’ll be possible to see some light snow and/or flurries as the cold air pours in. But, if we see any accumulation, it’ll be small. Probably in the lower half of the 0 to 1″ range.
It seems like it’s been a week, maybe longer. I’ve been warned about a possibility of an ice storm this weekend. Constant barrages of what we could have – sleet (maybe) rain(maybe), slow(maybe, and freezing rain(maybe). Starting a couple of days ago, the frozen options began to fall out of the “options” list (as per the computer models), but not from the forecasts. If you read (very carefully )the NWS forecast today, it’s a forecast for rain(as it should be). However, why is the forecast so full of references to sleet and freezing rain and possibly snow flakes??? Beats me! How long do you think it’ll take the weather service to get all the icy words out of the Louisville forecast?
Until they do, here’s my forecast.., Light rain should move into the area by 3-4 P.M. Rain should get a little heavier during the evening hours, then should become more scattered again after midnight. Temperatures will fall into the upper 30’s to near 40 once the rain begins. Temperatures will hold fairly steady in the 36-38 range most of the night then fall to the mid 30’s tomorrow afternoon.
The above forecast is for the Louisville metro area. As we get 20-30 miles north of Louisville a little light freezing rain will be possible this evening, but it will quickly change over to all rain. Roads are expected to remain wet, not icy.