Aikyam-Lab/Synoptic-Bench huggingface dataset:
332 PM CST Sat Dec 30 2023 - Periods of light freezing drizzle/mixed wintry precipitation to light snow through tonight. Freezing drizzle accumulation of a couple hundredths, and new snow accumulation of less than half an inch. GOES 16 water vapor imagery shows the low pressure spinning over the western half of Lake Superior. Low stratus clouds have filled in behind the cold front this afternoon. Many places north of I-90 saw their high temperature for the day early this morning, and most did not warm above freezing after sunrise. As a result, think most of the precipitation will fall as freezing drizzle/mixed wintry precipitation. Totals will remain low, up to a couple hundredths of freezing drizzle, and a dusting to a half an inch of snow. High pressure begins to build in and winds decrease through the day.
948 PM EST Sat Dec 30 2023 Low pressure over the western Great Lakes will track southeast across the remainder of the southern Great Lakes through Sunday night. As this occurs, a cold front will push east through the region.
A trough will slide across Western Washington into tonight for continued showers.
623 PM EST Sat Dec 30 2023 Low pressure over the western Great Lakes will track southeast across the remainder of the southern Great Lakes through Sunday night. As this occurs, a cold front will push east through the region.
/Tonight through Saturday/ Key Messages: -Flurries for the northern half of Iowa with freezing drizzle mixed in north of Highway 20 before midnight. The majority of this light precipitation will be flurries, however due to the lack of ice introduction, some freezing drizzle will mix in as well (20-30% chance). Freezing drizzle has collected on elevated surfaces this afternoon in Minnesota, adding to this confidence. Accumulation will be localized and elevated, but could create patchy slick spots as temperatures drop below freezing this evening. Clouds will make their gradual exit Sunday afternoon with highs in the low to mid 30s.
605 PM EST Sat Dec 30 2023 Rain and snow chances continue to slowly diminish through this evening, lingering in the ridges and Laurels.
517 PM CST Sat Dec 30 2023 (This afternoon through Sunday) A blanket of low-level clouds lies over a large portion of Central Alabama in the wake of the departing deep-layer trough. Deep ridging over the Central CONUS will becoming increasingly low amplitude as it moves eastward and interacts with a trough advancing southeast across the Upper Midwest and Great Lakes regions. This will cause dry, zonal flow to develop over the Southeast tomorrow while surface ridging over the Gulf of Mexico produces a light south- southwesterly sfc wind and warm air advection.
Light rain showers will continue to move east across the area as they taper off this afternoon and early this evening behind our most recent cold front. Ridging building in aloft and a layer of dry, sinking air will lead to stable conditions with calm winds and clearing skies through the TAF period. A cooler air mass has moved in behind the front with 500mb temperatures near -25C. With the ridge level flow becoming more westerly the moisture flow into the region has diminished, and showers are expected to slowly diminish through the remainder of the evening as a weak upper ridge builds in from the west and surface cooling decreased the lower level lapse rates.
533 PM CST Sat Dec 30 2023 - Patchy freezing drizzle this evening north of highway 30 turning to light snow with accumulations up to half an inch. This should not be too impactful, especially tomorrow as temperatures rise to near or above freezing. The most impactful weather may be this evening with patchy freezing drizzle, especially across the northern CWA. Locally though, we look to be either to dry for any precip or in some area of ridging that will keep us quiet.
501 PM CST Sat Dec 30 2023 - A cold front this evening will bring a shot of cold air to the region tomorrow and tomorrow night. A cold front will sweep through the region from north to south this evening bringing colder temperatures and cloud cover tonight into tomorrow. Upper level ridging is expected to build into the central Plains heading into the upcoming week.
Upper ridging and backing flow with warming 700mb temps along with mostly sunny skies have supported a pleasant day across southern Colorado. Will see the upper ridge in place break down tonight into Sunday with the above normal temps observed today being replaced with cooler and more normal temps on Sunday. The next upper trough moves in from the west on Sunday and will bring some focus and precip chances to the higher terrain, especially the central mountains, mainly during the day on Sunday. At this point, think there is a lower chance (20- 40%)for the higher amounts to be observed, but will continue to keep a close eye on later trends and guidance. Key Messages: - Highly amplified pattern through the period, though lower confidence remains on precip chances, outside of some light snow across the higher terrain.
Temperatures will climb into the 50s ahead of a cold front that will move across the Mid-South Sunday afternoon and evening.
737 PM CST Sat Dec 30 2023 - Flurries/freezing drizzle (10-30%) possible this evening Prairie Coteau.
455 PM CST Sat Dec 30 2023 (This evening through Sunday) A cold front is expected to move across the area later tonight into Sunday morning. The colder air will also cause temperatures to drop back down to around or just below average Sunday with highs in the low 40s (N OK) to mid 50s (along the Red River). No measurable precipitation is expected with the cold front.
745 PM MST Sat Dec 30 2023 Satellite imagery shows a sharp ridge axis over east-central MT with clear skies over our east and high clouds in the west. JKL An amplified upper ridge stretched from New Mexico northward into southern Canada and was providing abundant sunshine across Montana this afternoon.
613 PM CST Sat Dec 30 2023 - Flurries/freezing drizzle (10-30%) possible this evening Prairie Coteau.
502 PM MST Sat Dec 30 2023 - High clouds will be on the increase today keeping temperatures a few degrees cooler than yesterday.
Temperatures have already dropped into the lower to middle 30s in many areas under clear skies and light winds. Temperatures are running a bit cooler than current forecast and will issue update for current trends. 15/CBD Previous short-term discussion: (This afternoon through Sunday) A blanket of low-level clouds lies over a large portion of Central Alabama in the wake of the departing deep-layer trough. Deep ridging over the Central CONUS will becoming increasingly low amplitude as it moves eastward and interacts with a trough advancing southeast across the Upper Midwest and Great Lakes regions. This will cause dry, zonal flow to develop over the Southeast tomorrow while surface ridging over the Gulf of Mexico produces a light south- southwesterly sfc wind and warm air advection.
331 PM MST Sat Dec 30 2023 - Patchy freezing fog possible in portions of the Nebraska panhandle late tonight through tomorrow morning. Primary forecast concerns in the short term forecast are patchy freezing fog possible in the Nebraska panhandle and much cooler temperatures Sunday. Due to the upslope flow, colder temperatures, and increased moisture due to continued snow coverage and snow melt, areas of freezing fog are possible in mainly northern and eastern portions of the Nebraska panhandle. Temperatures Sunday are forecast to be much colder due to the backdoor cold front and increased cloud cover/upper level disturbance moving in from the south.
659 PM EST Sat Dec 30 2023 Weak high pressure builds in behind a dry cold front tonight.
(This afternoon through Sunday) The important parts: -Another night of temperatures hovering around freezing for much of the CWA. As the trough moves off to the northeast with little to no impact to the CWA, warmer air is expected to filter in behind it for new years day. Overnight lows again will hover around freezing, but tomorrow we're expecting to see temps in the low to mid 60s for much of the area.
Temperatures are still well-above average even though they trend cooler beginning tomorrow. A cooler overnight than last night sees lows in the upper teens and 20s. Afternoon highs tomorrow are also comparatively cooler, but are still above average in the 40s.
549 PM CST Sat Dec 30 2023 (This evening through Sunday night) Model agreement continues to see the propagation of a weak cold frontal boundary south into the Panhandles this evening. This cooler air will help in keeping temperatures down for the overnight and New Years Eve with tonight's lows still holding in 20s despite the 50s and 60s expected today. Heading into the overnight and the new year, this expected increase in moisture ahead of the trough may come back again in the form of overnight fog. Otherwise, temperatures will look to be cooler for the day with afternoon highs in the 40s to low 50s, while lows will be closer to the 20s to ring in the new year.
(Today) Water vapor imagery shows an upper level trough was digging into the upper MS Valley, with a predecessor wave advancing across the middle and lower MS valley. At the surface, an associated low was over Lake Michigan with a cold front extending through MO into OK and northwest TX.
300 AM CST Sun Dec 31 2023 - Reduced visibility and a few slick spots in freezing fog this morning into this afternoon especially from Hwy 83 westward. More freezing fog possible tonight.
An upper level system and a cold front near the area tonight into Monday, bringing mountain snow showers.
A dry cold front will move across the region this afternoon and evening to keep chilly conditions in the forecast.
While south winds and approaching patchy clouds will probably keep us from cooling too much overnight, we should still see most of the area drop into the low 30s and upper 20s. Turning cooler behind the fropa with 40s for Monday.
1114 PM CST Sat Dec 30 2023 - A cold front this evening will bring a shot of cold air to the region tomorrow and tomorrow night. A cold front will sweep through the region from north to south this evening bringing colder temperatures and cloud cover tonight into tomorrow. Upper level ridging is expected to build into the central Plains heading into the upcoming week.
1033 PM MST Sat Dec 30 2023 - High clouds will be on the increase today keeping temperatures a few degrees cooler than yesterday.
1115 PM CST Sat Dec 30 2023 - A cold frontal passage late tonight into Sunday morning will bring a return of clouds and below normal temperatures.
A surface cold front will move in from our northwest as day progresses, push southeastward, and generally be around and east of I-65 Corridor by early evening hours tonight. Temperatures around midnight tonight will range upper 20s north to mid 30s south, and with northwest winds ranging 5 to 10 mph, it will feel like to your exposed skin that it is in the low to mid 20s outside.
1055 PM CST Sat Dec 30 2023 (This evening through Sunday night) Model agreement continues to see the propagation of a weak cold frontal boundary south into the Panhandles this evening. This cooler air will help in keeping temperatures down for the overnight and New Years Eve with tonight's lows still holding in 20s despite the 50s and 60s expected today. Heading into the overnight and the new year, this expected increase in moisture ahead of the trough may come back again in the form of overnight fog. Otherwise, temperatures will look to be cooler for the day with afternoon highs in the 40s to low 50s, while lows will be closer to the 20s to ring in the new year.
(Today and tonight) Surface observations indicate that a cold front was located near/along the Red River in SW Oklahoma and into the TX Panhandle. The earlier arrival of the cold front to the Big Country will result in cooler highs in that region (mid 50s to low 60s), with compressional warming ahead of the cold front bringing warmer highs in the upper 60s to low 70s south of the Big Country.
Dense fog extended along the Highway 2 corridor from Williston to Stanley, and north into southern portions of Divide and Burke counties. On the backside of the cold front that passed through last night, high pressure is moving in. New Year's Eve day will be slightly cooler with sunshine, as high pressure centers over the Dakotas. Aloft, a ridge also centers over the Northern Plains.
Currently - Pleasant weather is holding across the Keys as a high pressure system blanketing the Gulf of Mexico continues to pump cool and dry air into the region. Dew points are broadly in the lower 50s. Dew points are expected to hold in the lower to mid 50s. High pressure migrating eastward through the Gulf of Mexico will maintain light northwest to northerly breezes on Keys waters through the overnight period.
1238 AM EST Sun Dec 31 2023 Colder weather is expected through the weekend as high pressure moves east across the Gulf Coast, then off the Southeast coast Monday.
Upper level low pressure is nearing the Las Vegas valley this evening and will continue to progress east across Arizona overnight. The upper low has moved into southern California this afternoon and will continue pushing eastward this evening and overnight. The more impactful change will be much cooler daytime temperatures Sunday.
Clearing skies throughout the day and these warmer winds will push highs to the 60s and 70s region-wide, around 5-10 degrees above normal. Just after sunset, a strong backdoor cold front will advance through the Panhandle, reaching the CWA very early Monday morning. As such, morning lows will be quite chilly, with sub-freezing temperatures everywhere north of the Hwy 90 corridor and 30s and 40s directly along the Rio Grande.
Otherwise, high pressure over the region will bring another fairly warm and dry day to the area with highs in the 40s over western and central areas, and 30s over the far east.
(Today and tonight) The final day of 2023 will be quite normal with temperatures warming into the lower to middle 60s across the region under ample sunshine.
Discussion: WV imagery shows the trough axis shifting east of the Appalachian chain this afternoon with upper-level ridging beginning to build in from the west. As the troughing continues to move east and ridging builds in from the west, a gradual clearing is expected late tonight and early Sunday morning from southwest to northeast across the forecast area.
Temperatures have already dropped into the lower to middle 30s in many areas under clear skies and light winds. Temperatures are running a bit cooler than current forecast and will issue update for current trends.
1002 PM CST Sat Dec 30 2023 (This afternoon through Sunday night) With upper level ridging building in from the west coincident with southwesterly surface flow, high temperatures are warming nicely this afternoon into the low 60s for most and 50s in the higher terrain. Some cirrus clouds are accompanying this ridge and will serve to hold low temperatures about 5 degrees warmer than this morning. Much cooler air flows in overnight Sunday into Monday, taking low temperatures down into the 20s and low 30s for most of the region.
1147 PM CST Sat Dec 30 2023 Expect temperatures on New Year's Eve to be slightly cooler for areas along and north of I-40 as a dry cold front crosses the Mid-South on Sunday. As a result, highs will range from the upper 40s to the low 60s. ANS Temperatures will climb into the 50s ahead of a cold front that will move across the Mid-South Sunday afternoon and evening.
943 PM MST Sat Dec 30 2023 - Patchy freezing fog possible in portions of the Nebraska panhandle late tonight through tomorrow morning. Primary forecast concerns in the short term forecast are patchy freezing fog possible in the Nebraska panhandle and much cooler temperatures Sunday. Due to the upslope flow, colder temperatures, and increased moisture due to continued snow coverage and snow melt, areas of freezing fog are possible in mainly northern and eastern portions of the Nebraska panhandle. Temperatures Sunday are forecast to be much colder due to the backdoor cold front and increased cloud cover/upper level disturbance moving in from the south. Monday will be comprised of the last day that we have predominant upper level ridging occur over the cwa. Slightly cooler temperatures will be present further to the west.
109 AM EST Sun Dec 31 2023 Weak low pressure tracks into the southern Canadian Maritimes overnight.
An upper trough will drive a clipper system through the area late Sunday into early Monday. The Laurels, esp Somerset and the highest elevations there, could pick up 2-3". Maxes Sun will get into the 40s in the SE, and temps in the night may not dip below freezing.
This disturbance will bring cooler air aloft and increased clouds in the low levels. Low clouds and fog is forecast to increase tonight across eastern OR and become widespread on Sunday night expanding into southwest Idaho valleys as warmer air aloft moves over the area.
Clearing skies and warmer today. A cold front moves through this tonight with increasing clouds and light wintry precipitation expected on the higher terrain. An area of low pressure will move through the Great Lakes today with a trailing cold front advertised to sweep through the region tonight.
1044 PM CST Sat Dec 30 2023 (This evening through Sunday) A cold front is expected to move across the area later tonight into Sunday morning. The colder air will also cause temperatures to drop back down to around or just below average Sunday with highs in the low 40s (N OK) to mid 50s (along the Red River). No measurable precipitation is expected with the cold front.
300 AM EST Sun Dec 31 2023 High pressure will keep the weather cool and dry heading into the new year weekend.
1038 PM CST Sat Dec 30 2023 - A cold front moves through the area tonight into Sunday with dry and slightly cooler weather into Monday. Cooler weather is in store for Sunday following the passage of a cold front tonight into the morning hours. Lows with drop into the lower 20s both nights as highs in the upper 30s to around 40 occur Monday.
In fact, we could see a 15 to 20 degree spread on high temps Sun, with lower 40s north to the lower 60s south.
The upper level pattern will gradually flatten across the Southeast, with high pressure prevailing at the surface. Ahead of the trough, upper-level cloud cover will begin to increase throughout the day on Monday, but no rain is expected. Highs today will be several degrees warmer than yesterday as skies will be mostly cleared out. The official forecast will reflect a blending of the lower- end guidance with the deterministic NBM to reflect the potential for slightly lower (rather than higher) temps to occur.
Today: A cold front pushed through the region late evening bringing an extensive stratus deck along with it.
446 AM CST Sun Dec 31 2023 (Today) Water vapor imagery shows an upper level trough was digging into the upper MS Valley, with a predecessor wave advancing across the middle and lower MS valley. At the surface, an associated low was over Lake Michigan with a cold front extending through MO into OK and northwest TX.
- A few inches of accumulation is possible for the ridges -- a dusting elsewhere. A mix of rain and snow is expected across the area as precipitation begins with rain will be favored for Pittsburgh/south and snow favored across the I-80 corridor and in the ridges. KEY MESSAGES: - Scattered snow in the wake of the low during the day, diminishing in the evening.
327 AM PST Sun Dec 31 2023 An upper level ridge is starting to build in over southern Oregon and northern California this morning. Upper level heights and high pressure really begin to build into the New Year with that strong southerly flow persisting. Some may consider the 1st day of year to be fairly nice with temperatures warmer than normal and perhaps plenty of sunshine in the later afternoon, especially if one travels to a location at higher elevation.
952 AM EST Sun Dec 31 2023 High pressure will extend over the Southeast through tonight, while clipper low pressure will move from the upper Great Lakes to the Middle Atlantic coast.
- Light snow mixed with freezing drizzle is expected this morning across the rest of the region. Despite having fairly impressive upper dynamics, it had little moisture to work with, and had only managed to produce light snow and freezing drizzle outside of the lake enhanced snow over east central Wisconsin. Light snow mixed with freezing drizzle expected elsewhere this morning with a half inch or less of accumulation. Skies should clear tonight as an upper ridge edges in from the northern Plains.
543 AM CST Sun Dec 31 2023 - Reduced visibility and a few slick spots in freezing fog this morning into this afternoon especially from Hwy 83 westward. More freezing fog possible tonight.
High pressure will continue to shift east through the remainder of the holiday weekend and into the new year.
213 AM MST Sun Dec 31 2023 Cooler with periods of active weather this week.
Slightly cooler weather will occur today into Monday.
There is a 10-15% chance for some stray showers to develop over the Eastern Sierra crest this evening as a closed low approaches the southern CA coast, but travel impacts are unlikely. Dry conditions continue into the first couple days of 2024 as a transient ridge crosses the western US.
624 AM EST Sun Dec 31 2023 High pressure will keep the weather cool and dry heading into the new year.
958 AM EST Sun Dec 31 2023 High pressure will keep the weather cool and dry heading into the new year.
549 AM CST Sun Dec 31 2023 (Today through Monday) Many areas were experiencing temperatures in the upper 20s this morning with some freezing fog along the Coosa and Alabama Rivers. A fast moving dry cold front pass through Central Alabama late tonight. Temperatures on Monday will be noticeably cooler across the northern counties, with highs ranging from the middle 40s to lower 50s.
529 AM CST Sun Dec 31 2023 (Today through Monday) Our airmass change to a more humid and warmer regime is slowly getting underway as winds have turned southeast, albeit light. Expect increasing south winds, rising dew points and warmer temperatures ahead of slower moving cold front as start the new year. Pressures do not lower significantly along the cold front that is expected to move into North Texas tonight keeping the south winds a tad lower than previous forecast. Still expect some gusts between 25- 30 mph favoring the Lower/Mid RGV this afternoon. Models have come together showing a slower frontal movement, now oozing into northern Ranchlands late Monday morning and not until the afternoon for the RGV, especially the lower RGV.
This will force a cold front through the area today bringing noticeably cooler temperatures than those seen yesterday. The colder temps should work into northeast Oklahoma this morning with highs only expected to be in the low to mid 40s from I-40 northward, while further south temps will have the opportunity to rise into the 50s before falling later this afternoon behind the front.
The snow will end early this morning across eastern Minnesota but linger into late morning across western Wisconsin, as the upper level low continues to exit the area to the east. SLick roads are likely to persist this morning with surface temperatures remaining below freezing & overcast skies preventing any appreciable solar heating. Upper level ridging builds through midweek, with above- normal temperatures in the 30s expected to start the week.
This will make it feel slightly cooler than the forecast highs which are in the mid to upper 50s. Dry weather will persist with mostly clear skies under the influence of high pressure to our southeast.
(Today through Monday) Many areas were experiencing temperatures in the upper 20s this morning with some freezing fog along the Coosa and Alabama Rivers. A fast moving dry cold front pass through Central Alabama late tonight. Temperatures on Monday will be noticeably cooler across the northern counties, with highs ranging from the middle 40s to lower 50s.