Chinook

Heavy snowfall rates with blizzard conditions for E Colorado and W Kansas. The HRRR shows a temperature of 21 degrees, snow, and winds of 30kt-50kt in the southeastern section of Colorado.

Blizzard warnings for the Cascades and Olympic Mountains. I didn't think they did that.

tornado threat for a good amount of the Gulf Coast

this is the most snow that any short-term forecast has had for my house since last winter. Of course, there's going to be the warm advection with a chance of wet snow, ice, and rain with a warmup

a good bit of Colorado has a watch/warning/advisory/blizzard warning now. If you use your imagination, the blob of warnings and watches in the plains looks like a supercell with the blizzard warning colors as the RFD.

This is kind of nuts with snow, rain, and freezing rain in random areas of Ohio with the southerly winds.

Example of bright-banding, that is, the radar shows very high reflectivity (unrealistically high) with heavy snow/sleet/wet snow.

Best of luck to Mid-Atlantic people. Notably, already a reasonably dangerous ice accumulation in SW Virginia.

Another depiction of the ECMWF precip type just shows rain for SE Mich at that time frame

What is this purple and pink rectangle at Detroit? A car for the Motor City?

we haven't seen a lot of these colors on the map when the temperature is 50 degrees, coast to coast

Storm in Albuquerque with briefly 1/2 mile visibility snow in ABQ airport, and some light snow amounts in Colorado Springs right now

It's actually sunny. I spent a long time with a lot of sunny days in Colorado, and I guarantee you, it has been dreary since Christmas here.

The subtropical jet(s) have taken over the North America in the last 10 days with El Nino (my new loop.) https://great-lakes-salsite.web.app/Dec_21_31_2023_250mb_loop.html

El Nino please help. Maybe we will see a big improvement in snow pack values (including the Sierra Nevada in the short term.) Upcoming storms will surely help the drought conditions in the Southeast. But that's not this forum.

There is some snow in various areas in the Ohio Valley on the ensembles for the FIRST storm. A lot of the ensemble members have this snow accumulation at about hour 120, that is 00z January 7.

Something to consider for the Ohio Valley. As you very well know, lots of models changes will happen in the next 6 days, so don't be surprised if these "big snow" ensembles don't work out

hey everybody. somebody from another part of the country here. Anybody remember a very special storm called the "Millennium Snowstorm." It happened on 12/30 to 12/31 in 2000 and rolled into New England but screwed Pennsylvania. Shown here is the co-op snow totals to 1/1/2001. Technically 1/1/2001 is the true changeover of the millennium. It's a bit of a debate, really. But that's not important. What was important: if you're old enough, everybody was worried their computer or technological systems based on computers would crash on 1/1/2000 at midnight. Anyway, this huge snowstorm for NYC had some similarities to the 1888 snowstorm of NYC. Actually, I'm not sure about that, as I might have to actually get Kocin and Uccellini (2004) out of my storage boxes to confirm anything about the evolution of the 1888 storm.

last year on 12/21/2022. Last year had a cold air mass that has not yet existed this winter. Were you ready for the drop to -9 degrees and snowing? Wind chill was -28 at Cheyenne and Denver for the evening hours on 12/22/2022.

a year ago

when the wind goes backwards in December and it's not even snow

while we're all bored, I ranked all of Toledo's coldest monthly temperatures (Not sorting by month.) https://great-lakes-salsite.web.app/ToledosColdestMonths.html an example of one of the cold ones, as per NOAA climate divisions, anomalies

just to remind you of what should happen with El Nino, but I'm sure won't be exact

Here is my new surface loop of our northern Plains storm. The storm was kind of a combination of upper level troughs. Now, it's stuck between the northern and southern jet streams and there's not a very cold air mass. Because there's never a very cold air mass. But there was a blizzard for some. https://great-lakes-salsite.web.app/Dec_24_27_2023_surface_loop.html