Aikyam-Lab/Synoptic-Bench huggingface dataset:
1140 AM CST Mon Jan 6 2025 - High pressure keeps cold and dry conditions in place across most of the Northland through much of the week. High pressure was centered over the Red River Valley of the North early this morning resulting in mainly clear skies across the Upper Midwest. Dry air was in place under the high across the region, limiting cloud cover. However, some lake effect cloud cover was evident on satellite east of the high over the Upper Peninsula of Michigan into northern Wisconsin where some near surface moisture was located. The jet stream will remain to our south today and tomorrow with high pressure remaining in control.
While we will get some clearing overnight, we will be harder pressed to completely break out of the low stratus. In the lower Snake River Plain and eastern Magic Valley, lows will fall into the low to mid teens for most.
Aside from these developments, dry conditions are anticipated on Tuesday, with north-northeast flow aloft keeping temperatures slightly cooler each day through Tuesday. An upper-level ridge will begin building to the west on Tuesday, maintaining cold northerly flow over the region.
This is just a little bit on the warmer side of average for January, but previous forecast discussions have mentioned a cold front moving through later tonight that will knock temperatures down a bit. Will go ahead and continue to advertise a relatively quiet day giving way to a cold front overnight that will bring down temperatures and dew points for the week. There are no watches, warnings, or advisories in effect across local waters, but Small Craft Advisories may be needed for increasing winds during the overnight hours tonight as a cold front moves through the area. From synopsis, moderate southerly breezes will slacken from the southwest over the course of today as a cold front moves across the eastern Gulf of Mexico.
Remaining accumulations are relatively light, with less than an inch for most places, and up to about 3 inches for the highest mountain elevations through today. This freezing fog will impact travel, with reduced visibilities and possible areas of road ice, especially for bridges. This is likely a result of a trough moving through the area today. With enough moisture, snow chances will accompany this cold front-like feature as it travels southward. This will bring enhanced snow chances, especially for places in favored north flow, like the Owl Creek/Bridger Mountains, the Lander area, and the Casper area. A few snow showers may linger over the southern Wind River Range and the Owl Creek/Bridger Mountains Tuesday as north flow continues.
1257 PM EST Mon Jan 6 2025 Low pressure continues to glide east across the Ohio Valley today.
A band of showers, ahead of a strong cold front that has slipped east of I-65, will move out of our eastern zones very early this morning. Highs today should only manage to reach the lower to middle 40s northwest of I-65 (14 to 17 degrees below normal), and the upper 40s to middle 50s to the southeast of I-65 (7 to 14 degrees below normal). As previously mentioned, temperatures will plummet behind the cold front, and likely drop into the 20s tonight.
Cold Weather Advisory remains in effect overnight and into the early morning hours on Tuesday as temperatures drop below freezing along the Nature Coast, mid 30s to low 40s and upper 40s in central/southern portions of the peninsula.
A ridge of high pressure will bring dry conditions through most of the week.
Dry weather is expected this week as high pressure builds in. As high pressure sets up in the coming days, a cooling and drying trend begins, which will reduce overnight cloud cover. Gusty northeast winds are expected starting tonight over ridges and higher elevations, particularly in Lake County. Gusty winds up to 40 mph are possible in some wind-prone areas, such as Cobb and Middletown, with higher gusts possible on ridgetops.
This flow represents the leading edge of a developing upper level trough that will dictate conditions through the short-term forecast.
- Cooler. A modest trough comprised of several pieces on energy is beginning to move over the Great Basin. The snow tonight across the north will be driven by orographics and a weak cold front moving southward. Another piece of energy drops into the backside of the trough causing it to close off over Arizona tomorrow.
710 PM EST Mon Jan 6 2025 - Light lake effect snow showers and a slight chance for freezing drizzle near the Lake Michigan lakeshore (mainly LaPorte and sw Berrien counties) tonight into early Monday.
Upper ridging over the Rockies, in particular the Canadian Rockies, will promote chinook-type winds aiding in a warming air mass advecting off of the High Plains toward the Northern Plains and Upper Midwest staving off lingering polar air currently over the area.
Overnight lows should settle in the lower to mid 20s areawide with isolated upper teens possible in far northern zones along the Ouachitas. Similar to today, a slow but steady warm-up will yield afternoon high temperatures in the lower to mid 40s on Tuesday as the flow aloft trends zonal. Mid and high clouds should continue to thicken up on Tuesday night just as the next Arctic high builds south through the Plains, reinforcing the extreme cold with overnight low temperatures once again dropping into the lower to mid 20s.
534 PM CST Mon Jan 6 2025 - Continued very cold tonight with lows in the low to mid 20s.
540 PM CST Mon Jan 6 2025 - An arctic cold blast will cause temperatures to remain near or below freezing through the week's end.
538 PM CST Mon Jan 6 2025 Cold weather and snow showers continue today behind a cold front.
216 AM CST Tue Jan 7 2025 - An arctic cold blast will cause temperatures to remain near or below freezing through the end of the week.
An upper level ridge will build offshore for drier conditions across the area into Tuesday.
1040 PM CST Mon Jan 6 2025 - Continued very cold tonight with lows in the low to mid 20s.
A dry north-northeast flow aloft will continue through Tuesday as an upper ridge builds into the Pacific Northwest.
1258 AM MST Tue Jan 7 2025 - Light snow showers linger through the morning today for central locations, but overall, a brief time of high pressure brings dry weather for much of today and tomorrow.
With high pressure in control inland, north winds are expected to increase through the week, along with steep wind-driven seas.
Guidance leans into snow as the ptype for now, but some potential for freezing drizzle should be monitored.
A strong cold front is now in south Florida and behind it is the coldest air we have seen all season. Nature Coast is expected to get below freezing with the rest of us getting down to around 40 degrees. Strong high pressure to the north will continue to keep the colder air trapped in Florida for much of the week.
However, it will still feel quite cold as the low level stratus deck will remain in place throughout the first half of the day before slowly scattering out towards the late afternoon.
100 AM EST Tue Jan 7 2025 - Light lake effect snow showers and a slight chance for freezing drizzle near the Lake Michigan lakeshore (mainly LaPorte and sw Berrien counties) tonight into early Monday.
After a quiet evening, our deep Gulf waters are starting to experience the first glimpse of the awaited cold front. Prefrontal on land, temperatures are in currently in the lower 70s. Temperatures will cool off post frontal tonight with lows decreasing down to the lower to mid 60s, and our highs expected in the upper 60s for tomorrow. From synopsis, a cold front moving across the Gulf of Mexico, currently located in our northernmost deep Gulf waters, will continue to push through the remainder of our waters overnight.
1115 PM CST Mon Jan 6 2025 Cold weather and snow showers continue today behind a cold front.
1144 PM CST Mon Jan 6 2025 - An arctic cold blast will cause temperatures to remain near or below freezing through the week's end.
503 AM CST Tue Jan 7 2025 - An arctic cold blast will cause temperatures to remain near or below freezing through the end of the week.
The snow will diminish Wednesday night once the upper trough moves south.
Dry weather is expected this week as high pressure builds in.
High pressure is over the area this morning. Temperatures are very cold with the ridge and thick snowpack in place.
There are some pockets of dense freezing fog and stratus around early this morning. Where we see stronger inversions, temperatures will struggle to get to near freezing today. and out of the low/mid 20s tomorrow.
153 AM PST Tue Jan 7 2025 * Strong northeast ridge winds are expected today through Wednesday morning. * High pressure returns the last half of the week with another cold front possible late in the weekend.
258 AM MST Tue Jan 7 2025 KEY MESSAGES: - Cold air will linger in the east today as warmer air moves into the west. The warmer temperatures will overspread the entire forecast area on Wednesday.
(Today and Wednesday) Gusty winds are ongoing this morning across the high terrain of the interior North Bay and East Bay. Decent stability around mountain top level during the morning hours will support a relative peak this morning, and again Wednesday morning around some of the higher terrain areas. Helena will undoubtedly continue to be an outlier on the high end, as usual. Elsewhere, gusts in the 45-55 mph range can still be expected in the higher terrain, and 25-35 mph in the valleys and across lower terrain.
(Today through Wednesday) Cold, high pressure will be in place through Wednesday. So while the highs will not be much different that today, it may feel warmer to a few.
526 AM CST Tue Jan 7 2025 (Today through Wednesday) Key Messages: - Freeze Warning in effect through 9 AM Today (Tuesday) for temperatures below freezing - Cold Weather Advisory in effect through 9 AM Today (Tuesday) for wind chills 25 or below The main weather story continues to be cold temperatures. Highs today will range in the low to mid 50s across the entire CWA. A reinforcing surge of high pressure will result in cooler temperatures filtering into our CWA early on Wednesday. As a result, colder temperatures are in store for tomorrow with highs in the low to mid 40s inland and around the low 50s near and along the coast. Increased north winds around 15-20 mph will result in Wednesday's wind chill values near or below freezing.
539 AM CST Tue Jan 7 2025 (Today through Wednesday Night) An upper trough over the Rockies to southern California will dive southeast through the Four Corners Region and develop a cutoff low this afternoon. This upper low will gather strength as it moves into northern Mexico Wednesday. Cold Canadian high pressure will continue to build over the southern Plains today. High pressure and dry weather will continue over the state through Wednesday night with cold temperatures.
(Today through Wednesday Night) An upper trough over the Rockies to southern California will dive southeast through the Four Corners Region and develop a cutoff low this afternoon. This upper low will gather strength as it moves into northern Mexico Wednesday. Cold Canadian high pressure will continue to build over the southern Plains today. High pressure and dry weather will continue over the state through Wednesday night with cold temperatures.
A ridge of high pressure will maintain dry conditions through most of the week.
703 AM EST Tue Jan 7 2025 A strong cold front is now in south Florida and behind it is the coldest air we have seen all season. Nature Coast is expected to get below freezing with the rest of us getting down to around 40 degrees. Strong high pressure to the north will continue to keep the colder air trapped in Florida for much of the week.
At the surface, high pressure ridge currently across the central portion of the country will build eastward.
Winds will continue to be gusty throughout the day today as an upper level trough continues to dig southward over the Great Basin, with upper level ridging over the Eastern Pacific. The National Blend of Models (NBM) shows a 70-90% probability of wind gusts of 60 mph or greater over the higher peaks of the Sierra Nevada. Periodically breezy north to east flow will continue through the rest of the week as ridging amplifies over the Pacific Northwest resulting in steadily warming temperatures into the weekend.
346 AM MST Tue Jan 7 2025 - Light snow showers linger through the morning today for central locations, but overall, a brief time of high pressure brings dry weather for much of today and tomorrow.
By the afternoon, winds will begin to relax as the pressure gradient weakens with the departing low pressure system. Despite the late day sunshine, it's going to be very chilly today as temperatures will only barely climb above the freezing mark (into the mid 30s).
(Today through Wednesday) Key Messages: - Freeze Warning in effect through 9 AM Today (Tuesday) for temperatures below freezing - Cold Weather Advisory in effect through 9 AM Today (Tuesday) for wind chills 25 or below The main weather story continues to be cold temperatures. Highs today will range in the low to mid 50s across the entire CWA. A reinforcing surge of high pressure will result in cooler temperatures filtering into our CWA early on Wednesday. As a result, colder temperatures are in store for tomorrow with highs in the low to mid 40s inland and around the low 50s near and along the coast. Increased north winds around 15-20 mph will result in Wednesday's wind chill values near or below freezing.
Highs tomorrow will be comparable to today, maybe a degree or two warmer, with low 40s north and upper 40s southeast.
314 PM EST Tue Jan 7 2025 All too familiar Arctic high pressure remains through the midweek period.
In the wake of the cold front overnight, much cooler temperatures and breezy conditions are ongoing. Temperatures along the Island Chain are in the lower 60s across the Upper Keys with mid to upper 60s for the Middle and Lower Keys.
Upper level ridge along the coast will dissipate the offshore frontal band as it comes inland later today, with only high clouds expected when it reaches our area Wednesday.
1130 AM CST Tue Jan 7 2025 (Today through Wednesday) Key Messages: - Freeze Warning in effect through 9 AM Today (Tuesday) for temperatures below freezing - Cold Weather Advisory in effect through 9 AM Today (Tuesday) for wind chills 25 or below The main weather story continues to be cold temperatures. Highs today will range in the low to mid 50s across the entire CWA. A reinforcing surge of high pressure will result in cooler temperatures filtering into our CWA early on Wednesday. As a result, colder temperatures are in store for tomorrow with highs in the low to mid 40s inland and around the low 50s near and along the coast. Increased north winds around 15-20 mph will result in Wednesday's wind chill values near or below freezing.
1129 AM CST Tue Jan 7 2025 (Today through Wednesday Night) An upper trough over the Rockies to southern California will dive southeast through the Four Corners Region and develop a cutoff low this afternoon. This upper low will gather strength as it moves into northern Mexico Wednesday. Cold Canadian high pressure will continue to build over the southern Plains today. High pressure and dry weather will continue over the state through Wednesday night with cold temperatures.
Temperatures are certainly cooler today, too, and that will continue into Wednesday. The lower Snake Plain and eastern Magic Valley will fall into the low to mid teens tonight. Expect some more low stratus and patchy dense freezing fog tonight with the HREF showing about a 20 to 30 percent chance of visibility dropping to a quarter mile or less out across the Arco Desert and through parts of the Snake River Plain. At this point, confidence in widespread coverage and visibility impacts is not high enough to issue any fog products, but we will need to continue to monitor, and any patchy freezing fog Wednesday morning will make for some drops in visibility and some slick spots where it does form which could impact the morning commute for some.
1243 PM EST Tue Jan 7 2025 - Several rounds of light snow possible through the weekend - Typical January temperatures A rather quiet afternoon is expected today with ridging nosing in from the west. The snow will diminish Wednesday night once the upper trough moves south.
Arctic high pressure continues to settle across the region. Temps may be cooler with brisk wind chills at times due to cold air advection and lingering stratus clouds.
1209 PM EST Tue Jan 7 2025 - Several rounds of light snow possible through the weekend - Typical January temperatures A rather quiet afternoon is expected today with ridging nosing in from the west. The snow will diminish Wednesday night once the upper trough moves south.
1030 AM MST Tue Jan 7 2025 - Light snow showers linger through the morning today for central locations, but overall, a brief time of high pressure brings dry weather for much of today and tomorrow.
1136 AM CST Tue Jan 7 2025 Arctic high pressure continues to settle across the region. Temps may be cooler with brisk wind chills at times due to cold air advection and lingering stratus clouds.
With plenty of sunshine on Wednesday, high temperatures should be a 2 to 5 degrees warmer compared to today. Lighter winds and less cloud coverage tonight and Wednesday night will allow for a bit colder low temperatures, ranging from the low to mid 20s inland, and upper 20s to lower 30s along the coast.
Temperatures along the Island Chain are in the mid to upper 60s with dew points in the lower to mid 50s.
256 PM CST Tue Jan 7 2025 - The coldest day in the period comes Wednesday and Wednesday night with daytime highs in the lower 20s and overnight lows in the single digits.
Latest upper level analysis depicts the long wave trough beginning to split into a closed low across southern Arizona, with the next upper level ridge beginning to push inland into the Pacific Northwest. Radiative cooling processes, combined with low level moisture and lighter upslope winds at the surface,resulted in freezing fog to develop in the morning hours from Laramie to Cheyenne with one-quarter mile or less visibility. Low stratus has settled into the High Plains and mountain valleys this morning in the wake of fresh snow, resulting in widespread MVFR To IFR.
851 PM EST Tue Jan 7 2025 All too familiar Arctic high pressure remains through the midweek period.
600 PM CST Tue Jan 7 2025 - The coldest day in the period comes Wednesday and Wednesday night with daytime highs in the lower 20s and overnight lows in the single digits.
Lows will range from the upper 20s to low 40s area wide with the lowest temperatures expected in areas along the Nature Coast.
220 PM MST Tue Jan 7 2025 KEY MESSAGES: - Cold air will linger in the east today as warmer air moves into the west. Much warmer temperatures will overspread the entire forecast area on Wednesday from chinook winds off the northern Rockies. - The first of two disturbances arrives Wednesday afternoon and night with a rain/snow/freezing rain mix moving through the area.
232 PM MST Tue Jan 7 2025 - Light snow will continue tonight favoring the San Juans with another 1 to 3 inches likely, mainly over the high terrain.
- Overnight low temperatures will drop into the single digits at many locations, with below-zero values over the higher peaks and in most high mountain valleys. Will go ahead and cancel the snow advisories, as any additional snowfall this afternoon will be light, with perhaps another half inch at most, mainly over the higher elevations of the southern Sangres. On Wed, brief upper ridge builds over Colorado, as upper low continues to dig south into Mexico. Considering snow cover and only weak downslope gradient, shaded toward the cooler end of most guidance, though not quite as low as rather cold MAV guidance.
513 PM MST Tue Jan 7 2025 - Very cold tonight - single digits in plains, and much below zero in the high mountain valleys.
Daytime highs on Wednesday will be slightly warmer with most warming into the 50s, but still well below average for this time of year. As for overnight tonight, went ahead and upgraded the Freeze Watch to a Freeze Warning for the southshore with the understanding that NOT everyone will reach freezing, but some of the cooler suburbs and outside urban heat island will likely drop below freezing for a time around dawn.
636 PM EST Tue Jan 7 2025 All too familiar Arctic high pressure remains through the midweek period.
This is due to an upper level trough moving through the Great Basin, with eastern Pacific ridging extending through the Pacific Northwest into the northern Rocky Mountains. Over the higher Sierra, winds have been gusting up to 55 and 70 mph as of 1:30 pm. The National Blend of Models (NBM) shows a 50-70% probability of wind gusts above 40 mph for the Delta and western side of the Valley this evening through midnight, with a 60-90% probability of wind gusts of 60 mph or greater continuing over the higher peaks of the northern Sierra Nevada. Winds will diminish through the day Wednesday as the upper trough shifts further south through Baja California. Upper level ridging will take over as the dominant synoptic feature over the Pacific Northwest leading to above normal high temperatures into the weekend.
Refreezing across area roads and sidewalks is possible.
235 PM MST Tue Jan 7 2025 - Very cold tonight - single digits in plains, and much below zero in the high mountain valleys.
448 PM MST Tue Jan 7 2025 - Light snow will continue tonight favoring the San Juans with another 1 to 3 inches likely, mainly over the high terrain.
128 PM PST Tue Jan 7 2025 * Gusty east winds continue tonight across Sierra ridgetops.
High clouds continue to move over northern California and southern Oregon as a trough moves over the top of an upper level ridge. The stability that this ridge brings will define the weather through much of this week. Overnight temperatures west of the Cascades are forecast to be high enough that freezing fog is not a concern this week.
Latest upper level analysis depicts the long wave trough beginning to split into a closed low across southern Arizona, with the next upper level ridge beginning to push inland into the Pacific Northwest. Radiative cooling processes, combined with low level moisture and lighter upslope winds at the surface,resulted in freezing fog to develop in the morning hours from Laramie to Cheyenne with one-quarter mile or less visibility.
The best potential for any accumulation will be across the northwest Sandhills including the Pine Ridge.
This is due to better saturation in the low levels residing across this area. However, this low level saturation, and associated flurries, will be coming to an end this evening as northerly flow advects in drier air from the north. The other aspect to this event is strong northwest winds picking up behind a passing cold front.
- A warmup to Thursday (highs in the mid to upper 30s) with a cold front later in the evening bringing the next 15-20% chance scatted snow chances.
1025 PM MST Tue Jan 7 2025 - Dry and warmer Wednesday - Windy Wednesday night/Thursday with some light snow possible.
expect another very cold night with light northwest winds expected to become light as the ridge moves overhead. The next upper trough will approach Thursday with the main bulk of energy expected to remain to our southeast. That said, the northern extent of the trough and an associated cold front will push southeast through the area. The region will remain in upper troughing through the weekend with another area of low pressure forecast to develop across eastern KS. Low chance of some shallow freezing fog towards sunrise, but mainly west of KMHK.
A strong 1040 mb area of high pressure has moved southward tonight and is currently centered over central Kansas. The good news is that we do see a modest warmup arrive Thursday as high pressure moves off to the east and southerly winds return ahead of a weak cold front. Temperatures stay below average, but do likely finally reach freezing. By Thursday evening and Thursday night the front will push southeast through the area, while a positively tilted trough swings across the Plains.