Aikyam-Lab/Synoptic-Bench huggingface dataset:
1131 AM CST Wed Jan 22 2025 Updated at 1129 AM CST Wed Jan 22 2025 - Warmer temperatures through the end of the week. (Today and tonight) Temperatures should finally climb above freezing area wide this afternoon with highs forecast in the 40s. Cooler air will lag farther behind, mainly impacting Thursday.
(Tonight through Thursday night) Key Message: - Freeze Warning in effect from midnight tonight through 9 AM Thursday for northern portions of the County Warning Area The onshore flow return this afternoon will be short-lived as a weak cold front pushes through tonight into Thursday morning. Clearing skies north to south on Thursday with highs in the lower to mid 50s and northerly winds 10-15 mph.
On Thursday the winds will be northwesterly behind the cold front and the heavier lake effect bands will realign accordingly.
A few spots across the northern Ranchlands may reach the freezing mark for an hour or two. On Thursday, a developing coastal trough will lead to increasing cloud cover and rain chances.
225 PM EST Wed Jan 22 2025 Arctic high pressure slowly weakens through the end of the work week.
Clear skies and southerly winds will allow temperature maximums to get further above the freezing mark this afternoon, reaching the low-to-mid 40s as a result. The flow aloft will drive another cold front across the region on Thursday morning, bringing a reinforcing shot of cooler and drier air. Temps will remain well below normal on Thursday, but it will be slightly warmer than today, with morning lows in the low to mid 20s, and highs ranging from the upper 40s to lower 50s.
The upper level ridge currently in place over the Pacific Northwest will shift west Thursday afternoon.
644 PM CST Wed Jan 22 2025 - Cooler Thursday with a few flurries possible.
Late Thursday night, a larger push of broad low pressure coming from west-central Canada will bring another round of snow to NE Montana.
The one hiccup in the forecast? Our temperatures will slip on Thursday with robust cold air advection behind the cold front that passes through the area early in the morning. Bone dry air will push dewpoints close to zero and highs will be relegated to the lower-20s.
626 PM EST Wed Jan 22 2025 High pressure builds over the region into tonight, shifting offshore on Thursday. Weak low pressure passes offshore into Thursday night.
900 PM EST Wed Jan 22 2025 A weak low pressure system will move east through the Great Lakes tonight through Thursday. This low will extend a weak cold front east across the region on Thursday.
A low amplitude mid-level short wave trough continued to sweep south-southeastward across the area this afternoon. Showers will decrease early this evening in the wake of the previously mentioned short wave, but ramp back up later this evening into the early morning hours as a second, weaker short wave trough moves over the northern and central Colorado mountains. A transitory positive tilt ridge develops over the area Thursday sustaining the break in snow. Models show good agreement with continued ridging off the Pacific Northwest and a deep cold longwave trough from the Front Range east across the CONUS keeping eastern Utah and Western Colorado under a northerly flow aloft.
As a result, roads and walkways, especially bridges and overpasses, will likely become slick and hazardous again.
751 PM EST Wed Jan 22 2025 High pressure builds over the region tonight, shifting offshore on Thursday. Weak low pressure passes offshore into Thursday night.
High pressure persists, bringing clear skies and another chilly, frost night.
Pattern Synopsis and Forecast: First trough aloft swings through tonight, eventually shifting winds to the west and northwest with secondary feature aloft for Thursday. Northwest flow and additional trough will pave the way for some lake effect snow on Thursday. Pattern Synopsis/Pattern Forecast: While overhead troughing will remain through much of the extended, direct tap into Arctic source region will be lost.
A weak low pressure system will move east through the Great Lakes tonight through Thursday. This low will extend a weak cold front east across the region on Thursday.
528 PM CST Wed Jan 22 2025 - Cold front moves through tonight keeping temps on Thursday below freezing. At mid afternoon, a couple of waves were moving through a mid level trough across the northern and central Plains. A cold front will continue to move through the forecast area this afternoon with the best advection of cold air arriving later this evening. A secondary mid level trough will move through Nebraska on Thursday with no precipitation expected.
The local area will lie within a west-southwest flow aloft associated with a broad trough that covers much of the eastern states. At the surface, an anomalously cold high pressure system will persist over the area, and with light winds and snow/sleet lingering in many places, record cold is expected to occur (see CLIMATE below).
935 PM EST Wed Jan 22 2025 Arctic high pressure slowly weakens through the end of the work week.
509 PM CST Wed Jan 22 2025 - Warmer this afternoon with highs in the 50s. Cooler on Thursday.
523 PM CST Wed Jan 22 2025 (Tonight through Thursday night) Key Message: - Freeze Warning in effect from midnight tonight through 9 AM Thursday for northern portions of the County Warning Area The onshore flow return this afternoon will be short-lived as a weak cold front pushes through tonight into Thursday morning. Clearing skies north to south on Thursday with highs in the lower to mid 50s and northerly winds 10-15 mph.
Tonight through Wednesday: Dry conditions will persist through much of tomorrow, but snow showers are expected to increase in the Cascades and Idaho Panhandle Thursday afternoon and evening as a trough moves through.
626 PM EST Wed Jan 22 2025 Dry and cold weather continues tonight as high pressure over the southern Plains builds over the Ohio Valley.
Longwave trough moves through the area at the end of the week.
Satellite imagery this afternoon shows a widespread blanket of cloud cover ahead of an incoming cold front with a few flurries or light snow showers being squeezed out of the stratus. Our weather pattern will remain fairly stagnant through the 7 day forecast period with a lack of major weather systems as the Rex Blocking pattern over the western US continues to keep any more powerful synoptic scale systems at bay.
550 PM CST Wed Jan 22 2025 - Snow will continue through Thursday morning across the region with the highest accumulations of up to 2 inches across Sheridan county and the Pine Ridge.
519 PM CST Wed Jan 22 2025 Updated at 516 PM CST Wed Jan 22 2025 - Temperature roller coaster as we deal with a few waves of cold fronts throughout the period.
652 PM EST Wed Jan 22 2025 Arctic high pressure slowly weakens through the end of the work week.
848 PM EST Wed Jan 22 2025 Arctic high pressure will maintain control leading to well below average temperatures through Thursday morning. Temperatures will begin to moderate late this week as high pressure begins to lift away. Due to light winds, wind chills won't be too much lower than temps, except along the highest ridges where some light 5-10 mph winds persist through the night. Cold Weather Advisories are in place from this evening through the night along the Allegheny Front, Blue Ridge Mountains, and into the central Shenandoah Valley. This overall rebound in temperatures will at least bring high temperatures to the upper 20s to mid 30s on Thursday, locally in the 20s across the higher terrain. This comes with a mix of clouds and sun as the next upper trough approaches from the west.
(Tonight) An upper level flow rounding the southern periphery of low pressure situated over the Davis Strait, continue to produce deep mean troughing across much of the North American domain. An upper level system moving SE across the central High Plains will help amplify the trough over the CONUS over the next day.
1027 PM CST Wed Jan 22 2025 (Tonight) An upper level flow rounding the southern periphery of low pressure situated over the Davis Strait, continue to produce deep mean troughing across much of the North American domain. An upper level system moving SE across the central High Plains will help amplify the trough over the CONUS over the next day. Highs are forecast to reach the lower 40s on Thursday, but dip back into the 30s for Friday.
Overnight, as the front and a weak area of high pressure over the Gulf Coast drift southward, gradient winds should slowly slacken. A reinforcing cold front will then push through the marine zones Thursday night, with yet another surge of strong northerly winds expected from Friday into the first half of the weekend. High pressure will then slide into the Southeast U.
There are some snow showers still passing through central Illinois north of I-70 this morning ahead of a cold front, but they are starting to peter out. The cold front is currently extended over northern IL and southwest, just north of the Kansas City area. The warming trend arrives for the weekend as ridging moves overhead for the end of the week.
Interaction between this front and strong high pressure over the eastern seaboard will keep a continued predominant northerly wind flow over the region for the next few days.
As a result, roads and walkways, especially bridges and overpasses, will likely become slick and hazardous again. Areas across SE Alabama, SW Georgia and the FL Panhandle, where the heaviest snowfall occurred, may experience refreezing tomorrow night into Friday morning as temperatures drop well below freezing once again.
A dry cold front will pass through the state today, bringing chilly afternoon conditions and breezy northeast winds. These temperatures will be ~5-15 degrees below what we saw yesterday, and this is thanks to a dry cold front pushing through the state today.
- More flurries will be possible by Friday morning mostly along the Hwy-14 corridor and Buffalo Ridge with mostly light accumulations expected. Temperature wise, we'll likely be quite a bit cooler than yesterday mostly due to lingering cold air advection aloft and northwesterly surface winds. By tonight, warm air advection (WAA) will begin to strengthen with the arrival of a quick mid-level ridge. The weekend: Heading into the weekend, more dreary and breezy conditions will be on tap for Friday as a mid-level wave swings through the region with its associated cold front. While the betters snow chances will likely stay just our north with the better dynamics, can't completely rule out a few flurries to very light snow along the highway-14 corridor and our higher elevation areas.
(Today through Friday Night) A weak cold front will continue to move over the region early this morning. However, it will feel warmer compared to previous days. Overall, expect highs in the low to mid 50s. Another cold night is on tap for SE TX tonight with sub freezing temperatures at most inland locations. Therefore, return/onshore flow will resume by the afternoon, bringing a warmer and more humid airmass inland. Overnight lows will finally be in near to above freezing across the entire region.
Flurries continue behind the cold front this evening. Cold front continues to advance southward across the southern CWA, with temperatures having fallen several degrees down into the teens and 20s behind the front. Friday morning will start the period with northwesterly winds aloft and a trough pattern moving in.
(Today through Friday night) A large scale trough remains across eastern CONUS keeping a cold north wind across the southern plains for today. The trough will shift eastward late today allowing a small ridge to slip in and move across the southern plains for Friday. This will change the winds to the SW bringing in warmer air to the panhandles.
A high pressure system has been sliding off to our east as a system approaches front the west. Afternoon highs in southern West Virginia, northeast Kentucky, and extreme southern Ohio are expected to rise above freezing. A cold front will then move through tonight. Dry weather can be expected in advance of the cold front, but some snow showers are possible behind the front. A clipper system transits the region Thursday night bringing potential for some light snowfall accumulations (generally few tenths to half an inch for the lower elevations and a couple inches in the mountains) as well as putting a pause on the warming trend.
1259 AM EST Thu Jan 23 2025 Arctic high pressure slowly weakens through the end of the work week.
(Today and tonight) As cooler air filters in, we'll see a slight dip in high temperatures today as compared to yesterday, with highs generally in the upper 30s to mid 40s. Temperatures will fall into the mid teens (northern Oklahoma) to the lower 20s (near the Red River) tonight. With clear skies and light winds, temperatures could be locally cooler due to strong radiational cooling.
A weak, dry cold front is expected to move through SE Texas overnight into Thursday morning as a mid/upper level trough digs across the Central Plains/Upper Mississippi River valley. Still, some snowpack may remain in place, which could bring locally cooler spots where temperatures are a few degrees cooler. Overnight lows into Friday morning will still be sub-freezing ranging from the 20s to 30s.
1024 PM EST Wed Jan 22 2025 Dry and cold weather continues tonight as high pressure over the southern Plains builds over the Ohio Valley.
1052 PM CST Wed Jan 22 2025 Updated at 1051 PM CST Wed Jan 22 2025 - Temperature roller coaster as we deal with a few waves of cold fronts throughout the period. (This afternoon through Thursday night) Temperatures have been noticeably warmer today with highs reaching well into the 40s and 50s across the area with only a little high cirrus clouds to filter insolation. However surface observations show a cold front currently near the I-10 corridor and moving south that will keep lows tonight in the 20s to upper teens.
A cold front and associated upper level trough will move through the area this afternoon, with winds shifting from the southwest to northwest behind the front. Zonal flow across the CONUS will result in a mainly dry and seasonable pattern across the Lower Great Lakes in the coming week.
With a cold airmass remaining in place, overnight lows forecast to fall into the low to mid 20s. This is due to the broad, dense ridge axis, responsible for the coldest temperatures of the season, shifting further across the eastern US. This will maintain southerly winds across the area, slowly boosting temperature maximums and minimums closer to seasonal normals (maximums in the lower 50s/minimums in the lower 30s).
- Cooler again today with highs around 50. Hard freeze again tonight with lows in the low to mid 20s.
Quiet weather with temperatures already in the low to mid 20s, dropping into the teens and low 20s by sunrise. While the calm winds and dry air will help cooling potential, the warmer day today and increasing upper-level cloud cover should work to keep lows a little warm than last night. Although the wind will remain light, temperatures will drop below freezing early this evening and bottom out in the teens over our eastern and southern zones.
Within this setup, a cold front is pushing through the region today, bringing notably cooler temperatures but also introducing a complex set of forecast challenges. As a result, maximum temperatures could remain locked in the upper 50s where cloud cover remains most persistent, whereas areas that see ceilings lift and pockets of sunshine could reach the low to mid 60s. By tonight, temperatures will fall well below seasonal norms, ranging from the mid/upper 40s across much of the region to the lower 50s along the immediate east coast.
Northerly flow aloft tonight will transition to northwesterly on Thursday as the upper ridge to our west weakens due to an approaching trough from SW Canada. Another cold night is in store across the region with single digits and teens (sub-zero in some areas of central Idaho), but will recover into the 30s and 40s in the afternoon across the lower valleys. Temporary air stagnation with mixing height near the threshold value of 2kft MSL is expected through Thursday, then deeper mixing behind a cold front Friday through the weekend.
- Much milder with warmer downslope southwest breezes Friday.
348 AM EST Thu Jan 23 2025 - System Shifts with Lake Effect through Today - Slightly warmer with another chance of snow this weekend - System Shifts with Lake Effect through Today As of 330 AM the southwesterly flow and associated lake effect snow showers continue, albeit quite diminished. The cold front, which latest satellite has moving through Wisconsin will drop down around sunrise, which will shift winds sharply to the northwest by mid morning and will continue through the day. - Slightly warmer with another chance of snow this weekend The bitterly cold temperatures will slightly improve into this weekend with temperatures closer to normal.
Additionally, similar to last night, a few patches of freezing fog have developed, but don't expect that to be particularly widespread.
203 AM CST Thu Jan 23 2025 - A polar cold front will move through the region today and tonight, bringing an increase in cloud cover and some flurries to parts of the area.
Tonight: Aloft, a large/broad trough encompasses much of the United States, while a ridge remains well offshore across the Atlantic. At the sfc, dry/cold high pressure will prevail locally while a weak trough develops well to the south/southeast with no impacts in regards to precip locally. These clouds will likely keep sfc temps a bit warmer than previously forecast, even with a blanket of sleet/snow on all grounds locally.
321 AM EST Thu Jan 23 2025 Arctic high pressure will maintain control leading to well below average temperatures through this morning. Temperatures will begin to moderate late this week as high pressure begins to lift away. Other than possible lingering upslope snow, dry conditions are expected Friday with high pressure. A dry frontal passage will turn winds W/NW, resulting in highs a few degrees cooler than Thursday, but mostly west of the Blue Ridge. Low temperatures will be a few degrees cooler as well, in the single digits and teens.
210 PM Update It's a bright and sunny day across the region with high pressure overhead. However, temperatures remain cold today with highs only in the low to mid teens most areas. Good news is that ridging and southwest flow pushes into the region tonight along with cloud cover. This will keep temperatures warmer tonight, but a few of the colder spots may still dip to or just below zero by tomorrow morning. Afternoon highs will climb into the low 20s for much of the area, with a few spots reaching the mid to upper 20s. However, tomorrow night, an upper trough will swing into the region and low level flow will turn west-northwest again as a surface cold front pushes across the area.
953 PM CST Wed Jan 22 2025 Temperatures are running about 10 degrees warmer than last night, mainly due to persistent southerly winds between 5 and 10 mph across the region. Bumped temperatures up a degree or so areawide to account for the low level mixing.
At the surface, high pressure extended From New Jersey southwestward to Louisiana. Weak low pressure was over north Texas. High clouds continued to move eastward in quasi-zonal flow across the Gulf Coast states ahead of the upper trough.
1058 PM CST Wed Jan 22 2025 (Tonight through Thursday night) Key Message: - Freeze Warning in effect from midnight tonight through 9 AM Thursday for northern portions of the County Warning Area The onshore flow return this afternoon will be short-lived as a weak cold front pushes through tonight into Thursday morning. Clearing skies north to south on Thursday with highs in the lower to mid 50s and northerly winds 10-15 mph. However, do maintain a low to medium chance for rain over the Gulf waters where PWATs remain somewhat elevated in junction with a mid-level trough and 850-700mb frontogenesis aiding in lift. Another Freeze Warning is likely Thursday night into early Friday morning for majority of South Texas with freezing temperature probabilities ranging from 40-90% south to north respectively.
(This evening through Thursday night) A large scale positively tilted trough centered over the Great Lakes still encompasses most of the CONUS, with the mild air only existing along the West Coast and southern Florida. Winds will become lighter overnight tomorrow, with not much change in the lows from tonights lows.
1111 PM CST Wed Jan 22 2025 - Warmer this afternoon with highs in the 50s. Cooler on Thursday.
358 AM EST Thu Jan 23 2025 Weak high pressure remains over the region today as low pressure passes offshore late in the day and tonight.
A trough moves through the area at the end of the week.
249 AM EST Thu Jan 23 2025 (Today through Friday) At a glance: - Frigid morning, then gradual warming - Black ice/lingering ice cover likely on less-frequented roadways With high pressure settling in at the surface and a reinforcing shot of dry air moving through at the mid-levels, negligible precipitating weather is expected for the next 36 hours. Morning cloud cover will initially stagnate additional melting, but highs in the lower-40s this afternoon should support further progress in breaking through the impressive snowfall (as much as 7- 9") seen across our far southern counties.
1120 PM CST Wed Jan 22 2025 Temperatures are running about 10 degrees warmer than last night, mainly due to persistent southerly winds between 5 and 10 mph across the region. Bumped temperatures up a degree or so areawide to account for the low level mixing.
02z/8pm surface analysis shows a 1012mb low over Lake Superior with a cold front extending southwestward into Iowa/Nebraska. S/SW winds ahead of the system have brought milder air into central Illinois this evening as evidenced by current temperatures mostly in the lower to middle 20s. Barnes 12z upper air analysis and latest water vapor imagery indicated a mid level trough axis stretched from James Bay southwest into the central Plains. Any untreated roads where snow accumulates can experience slick spots given our frozen ground and temps below freezing. The cold front will cross the area early Thursday morning, veering winds around to the northwest and increasing gusts to 15-25 mph. Surface ridging will be working across the region at that time, so light winds should produce apparent temps only a few degrees below ambient and cold weather headlines are not anticipated.
1107 PM CST Wed Jan 22 2025 - Snow will continue through Thursday morning across the region with the highest accumulations of up to 2 inches across Sheridan county and the Pine Ridge.
Chances for light snow is the primary forecast concern tonight into Thursday as an upper trough and cold front swing through. The main upper trough and cold front look to reach nw IN and sw MI later this evening into the overnight, and through the rest of the forecast area Thursday morning/early afternoon. The exception will be closer to the lake where enhancement is expected immediately along and behind the cold front. Wrn flank of departing ridge slow to saturate ahead of leading upper disturbance seen over wrn IL attm.
- The next system arrives tonight, bringing a cold front and widespread light snow chances to the area through Friday.
527 AM CST Thu Jan 23 2025 - A polar cold front will move through the region today and tonight, bringing an increase in cloud cover and some flurries to parts of the area.
Dry weather will continue through Friday as ridging remains over Northern California with Valley highs in the 60s, and cooler temperatures in the mountains. Warmer high temperatures will be possible across portions of the foothills and northern Sacramento Valley today and Friday, with a 20 to 50% chance of high temperatures over 70 degrees. Valley low temperatures are forecast to be in the 30s through the end of the week, with a 15 to 30% chance of below freezing temperatures Friday morning in more rural areas of the Valley.
This lake effect will come to an end this afternoon as a ridge of high pressure builds in across the upper Mississippi Valley and winds turn westerly. The aforementioned ridge of high pressure will track across the western Great Lakes tonight.