Aikyam-Lab/Synoptic-Bench huggingface dataset:
400 PM EST Tue Dec 24 2024 As low pressure moves off the North Carolina coast tonight, high pressure will build across the northeastern United States with a pressure ridge extending into the Carolinas through the rest of the week. As expected, temperatures where rain is occurring remain in the low to mid 40s, while the Triad has risen into the mid 50s with mostly sunny skies. * Dry, variably cloudy, with seasonable/near average temperatures In the mid/upper-levels, a cyclone will develop and slow as it wobbles away from the coast of the Northeast and Atlantic Canada. At the surface, high pressure centered near 1035 mb over the lwr Great Lakes and nrn Middle Atlantic will ridge swd over the Carolinas, with associated nely flow directed across cntl NC.
And as long as the ridge axis remains over the forecast area, the low clouds and fog are probably going to continue being the main sensible weather. Some freezing fog across parts of northern KS may deposit some ice on elevated surfaces.
1230 PM EST Tue Dec 24 2024 Weak low pressure will move northeast along the North Carolina coast today.
High pressure almost into the weekend. Therefore, the Winter Weather Advisories for the higher elevations have been cancelled early. Nonetheless, there can still be some isolated slick spots or pockets of freezing drizzle, especially on the higher ridgetops, so please use caution the rest of today. A 500-mb ridge of high pressure will build into the area Christmas Day, which will allow temperatures to rebound into the upper 40s and lower 50s across much of the area.
1231 PM EST Tue Dec 24 2024 - Drier and warmer conditions expected behind the early week system for Christmas Eve and Christmas Day. Current water vapor imagery/RAP analysis early this morning shows yesterday's clipper system now over New England with high pressure centered over the Great Lakes Region. This trough moves into the southern plains 00z Fri and into the Ozarks 12z Fri. This could go into forming low clouds which might hold temperatures down a bit during the day and keep lows warmer at night. Could be a little freezing rain in a few places Thu night. In the extended, the GFS and ECMWF show a 500 mb ridge in the ern U.
322 PM EST Tue Dec 24 2024 As low pressure moves off the North Carolina coast tonight, high pressure will build across the northeastern United States with a pressure ridge extending into the Carolinas through the rest of the week. As expected, temperatures where rain is occurring remain in the low to mid 40s, while the Triad has risen into the mid 50s with mostly sunny skies.
This afternoon, a loosely organized area of low pressure is over Texas with a warm front stretching northeast across the mid Mississippi Valley near the I-70 corridor. A broad region of isentropic ascent along the 280-290K surfaces is present north of the warm front and will overspread central Illinois late this evening and continue tonight through the day Wednesday. There will be a brief window to monitor for freezing rain at the onset of precip late tonight/early Wed mainly near the I-74 corridor. HREF probs for a glaze of ice only show up in the 90th percentile of the forecast, so there is very low confidence in this occurring with temps hovering near the freezing mark early Wednesday near I-74. Temps should be able to eek out a couple more degrees compared to today, topping out in the lower to mid 40s.
Temperature wise, lows will generally range in the low to mid-50s both tonight and tomorrow, with highs tomorrow ranging in the low to upper-60s.
135 PM EST Tue Dec 24 2024 As low pressure moves off the North Carolina coast tonight, high pressure will build across the northeastern United States with a pressure ridge extending into the Carolinas through the rest of the week. As expected, temperatures where rain is occurring remain in the low to mid 40s, while the Triad has risen into the mid 50s with mostly sunny skies. Meanwhile, mid/upper ridging will over the Eastern US will undergo some slight amplification through late week.
119 PM EST Tue Dec 24 2024 Low pressure will track along the coast today then continue east across Nova Scotia tonight.
Increased trough development over the southern Plains and western Gulf states resulting in increased ridging over the southeast. The good news is that ridging will mean increasing temps through the coming days.
Warmer and wetter conditions have returned to the Midsouth.
Rest of Today and Tonight: An upper ridge will continue building overhead through the rest of today, continuing out dry weather through evening. As we move into the overnight hours, the incoming low pressure system will finally being to move into the Four Corners Region. Wednesday (Christmas): An incoming upper low will move into the Four Corners Region Christmas morning, spreading snow showers across the peaks of the Continental Divide. The low is relatively warm, dry, and fast- moving, so not only will snow amounts be less than initially thought, but precipitation will quickly spread east across the area throughout tomorrow afternoon-evening.
946 PM EST Tue Dec 24 2024 Cool and dry high pressure will settle to our northeast tonight and Wednesday, yielding dry conditions and temps remaining a bit below normal, though not nearly as cold as recent days.
A ridge is currently in place today over the region, but will quickly be replaced by a trough this evening into tomorrow. Thanks to the ridge temperatures will again be 10-15 degrees above normal today. High clouds will move in early this evening in advance of the trough. Christmas day temperatures will moderate some thanks to the cooler air mass brought in by the trough. This trough will also bring a 15 percent chance for precipitation in the White Mountains Wednesday afternoon.
321 PM CST Tue Dec 24 2024 - Fog and freezing fog is possible again tonight for the Northland, and a dense fog advisory might be needed.
First in a series of trofs moves through tonight into Christmas Day with widespread light snow expected. Pocatello may be all rain for Sat-Sun, but temperatures are so close to freezing that even a two degree F difference in overnight lows can mean much more snow. However, this doesn't have good confidence, as some clusters keep more zonal flow or higher 500mb heights (indicating warmer air).
This low stratus should continue to spread into the forecast area for the remainder of tonight with skies becoming increasingly cloudy as high clouds will also be thickening tonight in the moistening southwest flow aloft. While confidence remains on the low side in how much of this stratus deck can hold together as it approaches the western FL peninsula, made some minor tweaks to sky cover and fog forecast for tonight based on recent trends and guidance. High pressure north of the region will drift east out into the western Atlantic Ocean over the next day or so as a weak area of low pressure off the southeast U.
620 PM CST Tue Dec 24 2024 - Fog and freezing fog is possible again tonight for the Northland, and a Dense Fog Advisory might be needed.
941 PM EST Tue Dec 24 2024 Cool and dry high pressure will settle to our northeast tonight and Wednesday, yielding dry conditions and temps remaining a bit below normal, though not nearly as cold as recent days.
628 PM EST Tue Dec 24 2024 Cool and dry high pressure will settle to our northeast tonight and Wednesday, yielding dry conditions and temps remaining a bit below normal, though not nearly as cold as recent days.
Included some patchy freezing fog, primarily in sheltered locations east of the I-65 corridor. Low temperatures should drop into the lower 30s in most locations, except in higher elevations which should be 5 to 10 degrees warmer.
835 PM CST Tue Dec 24 2024 A mid level trough will move through the Red River Valley overnight to be located in the Arklatex on Christmas morning. The mid level trough will weaken on Christmas Day as it crashes into the upper ridge over the southeast U. Warmer and wetter conditions have returned to the Midsouth.
Some post frontal showers remain possible this afternoon, with dry air and cooler air filling in behind it.
701 PM EST Tue Dec 24 2024 High pressure north of the region will drift east out into the western Atlantic Ocean over the next day or so as a weak area of low pressure off the southeast U.
WEATHER PATTERN OVERVIEW: Expect generally quiet weather over northeast Montana through the coming weekend, as a ridge of high pressure keeps precip chances at minimum.
Precipitation has all but ceased with an area of high pressure located over the eastern half of the state. Still expecting the low stratus to hang around overnight due to proximity to the stationary boundary. Therefore, the Winter Weather Advisories for the higher elevations have been cancelled early. Nonetheless, there can still be some isolated slick spots or pockets of freezing drizzle, especially on the higher ridgetops, so please use caution the rest of today. A 500-mb ridge of high pressure will build into the area Christmas Day, which will allow temperatures to rebound into the upper 40s and lower 50s across much of the area.
Patchy freezing drizzle is possible Christmas morning along and north of Interstate 80. Therefore, combined with a low sun angle and northeast to east winds, the low stratus will remain socked in across the forecast area. As the cloud deck lowers even more late tonight into Christmas, can't rule out patchy drizzle/freezing drizzle. An upper level trough passing to our southeast may also spread some light rain into our far southeast counties (Macomb to Princeton, IL) but probabilities are only around 20 percent). Due to the low stratus the diurnal temperature spread will be small with lows tonight in the upper 20s to lower 30s, and highs on Christmas in the mid 30s to around 40.
We will again only see a few degree rise in temperatures with highs on Wednesday in the low to mid 40s.
525 PM CST Tue Dec 24 2024 (Remainder of today and tonight) A low amplitude ridge at the 500-mb level will translate eastward and away from the TN Valley this afternoon/evening, in advance of an amplifying southern stream trough that will dig southeastward across central TX throughout the near term period. Lows will generally be in the u20s-l30s, with spotty freezing fog possible in the river valleys of northeast AL.
520 PM CST Tue Dec 24 2024 Warmer and wetter conditions have returned to the Midsouth.
(Tonight through Wednesday) 1032 mb high pressure centered over Ontario and Quebec remains in control over the eastern CONUS tonight. With temperatures near or below freezing in a couple cool spots there's a low chance of patchy freezing fog but not expecting any impacts at this time.
632 PM EST Tue Dec 24 2024 Exiting low pressure over northern New York early this afternoon will continue to exit east into New England tonight. Low pressure centered over northern New York early this afternoon, will continue to exit east into New England tonight. High pressure will extend east into the eastern Great Lakes tonight and into the Saint Lawrence Valley Christmas.
637 PM EST Tue Dec 24 2024 A few flurries or spotty freezing drizzle is still possible through this evening, mainly near the Finger Lakes.
346 AM EST Wed Dec 25 2024 High pressure over the northeast United States will expand down the east side of the Appalachians today and tonight with abundant cloud cover and temperatures slightly above normal. By the end of the week the high will move offshore and low pressure approaching from the center of the country will bring the next chance of widespread precipitation. 2) Wedge will keep temperatures cooler.
High pressure will extend east into the eastern Great Lakes tonight and into the Saint Lawrence Valley Christmas.
1230 AM EST Wed Dec 25 2024 As low pressure moves off the North Carolina coast tonight, high pressure will build across the northeastern United States with a pressure ridge extending into the Carolinas through the rest of the week. * Dry, variably cloudy, with seasonable/near average temperatures In the mid/upper-levels, a cyclone will develop and slow as it wobbles away from the coast of the Northeast and Atlantic Canada. At the surface, high pressure centered near 1035 mb over the lwr Great Lakes and nrn Middle Atlantic will ridge swd over the Carolinas, with associated nely flow directed across cntl NC.
1105 PM CST Tue Dec 24 2024 - Fog and freezing fog is possible again tonight for the Northland, and a Dense Fog Advisory might be needed.
(Today) Mostly clear conditions look to prevail through the night as high pressure fight to hang on as long as possible. The clear and calm overnight conditions will allow temps to drop into the low to mid 30s by sunrise. SE flow along the western periphery of high pressure will continue through the day maintaining our warm yet dry airmass. This will result in a very benign Holiday with mostly clear skies allowing for temps to rise into the high 50s and perhaps low 60s.
101 AM EST Wed Dec 25 2024 While strong high pressure centered over the Saint Lawrence valley will guarantee fair dry weather through Christmas and the immediate days to follow.
1225 AM EST Wed Dec 25 2024 Cool and dry high pressure will settle to our northeast tonight and Wednesday, yielding dry conditions and temps remaining a bit below normal, though not nearly as cold as recent days.
232 AM EST Wed Dec 25 2024 As low pressure moves off the North Carolina coast tonight, high pressure will build across the northeastern United States with a pressure ridge extending into the Carolinas through the rest of the week.
Despite this high, plentiful low level moisture stuck beneath ridge attendant subsidence inversion continues to result in widespread low clouds across the Northwoods. Surface features remain steady-state through tonight as sharp mid and upper level ridging builds directly overhead later today through tonight. Those clouds will put a significant damper on diurnal temperatures trends, with highs today expected to again top out mostly in the lower 30s, with lows tonight back down into the upper teens and 20s. Warmer weather set to round out the remainder of this Holiday week.
However, widespread showers and some very electrical thunderstorms continue this evening with frequent lightning and heavy downpours as the upstream trough draws closer to the region. Temperature wise, lows will generally range in the low to mid-50s both tonight and tomorrow, with highs tomorrow ranging in the low to upper-60s.
327 AM EST Wed Dec 25 2024 While strong high pressure centered over the Saint Lawrence valley will guarantee fair dry weather through Christmas and the immediate days to follow.
Merry Christmas and Happy Hanukkah from all of us at NWS Tucson! A trough is quickly moving into the area from the northwest. This system will bring cooler, closer to normal, temperatures today and overnight. It will also lead to breezy east winds in southeastern Cochise county and along the higher terrain this afternoon. With this trough it will also bring a 15 percent chance for precipitation in the White Mountains this afternoon.
High pressure takes control through the work week.
(Today and tonight) Key Messages: Quiet weather day today Discussion: Currently temperatures are hovering right around the freezing mark early this morning with mostly clear skies. With the increased clouds and daytime heating overnight lows will also be several degrees warmer and most of the Valley will stay above freezing overnight.
1053 PM CST Tue Dec 24 2024 (Tonight through Wednesday) 1032 mb high pressure centered over Ontario and Quebec remains in control over the eastern CONUS tonight. With temperatures near or below freezing in a couple cool spots there's a low chance of patchy freezing fog but not expecting any impacts at this time.
1259 AM CST Wed Dec 25 2024 - Fog and freezing fog is possible this morning.
1148 PM CST Tue Dec 24 2024 A mid level trough will move through the Red River Valley overnight to be located in the Arklatex on Christmas morning. The mid level trough will weaken on Christmas Day as it crashes into the upper ridge over the southeast U. Warmer and wetter conditions have returned to the Midsouth.
A mid-level trough is located over northern Texas with a cold front moving into the southern Edwards Plateau. Very light rain showers may continue into late afternoon but the main feature in the short term period will be a line of thunderstorms expected to develop along the cold front this evening.
336 AM EST Wed Dec 25 2024 High pressure will be in control today and through the rest of the work week. Temperatures trend warmer through the weekend. We have also been gifted with a ridge of high pressure and quiet conditions for today and through the near term period. Temperatures will max out in the mid 20s to low 30s as weak northerly flow will advect in cooler air. Model soundings are showing a shallow inversion which would be favorable for some patchy freezing fog.
316 AM EST Wed Dec 25 2024 Cool and dry high pressure will settle to our northeast today, yielding dry conditions and temps remaining a bit below normal, though not nearly as cold as recent days.
Much warmer and more humid air is present across the Florida Straits. Short Term Update - High pressure will remain over the southeastern United States and keep winds in the Keys light to gentle out of the northeast. High pressure over the southeastern United States will maintain gentle to moderate breezes on Keys waters.
(Today and tonight) A warming and moistening trend continues today and tonight while high pressure centered to the north keeps fairly light northeasterly winds over the area. No rain is expected today with a bit of mid level ridging overhead, but a few showers may begin to develop later tonight as the ridging breaks down.
This will produce ridging over the area, with gradually warming temperatures (particularly for overnight lows). High temperatures today will range from the upper 40s in portions of N GA to the lower 60s in the S. High temperatures on Thursday will be similar to today's except a few degrees cooler in areas with more cloudiness.
Lows will fall into the upper 30s to the lower 40s. On Thursday, mid level southwest flow will begin to increase between a mid level ridge and the next weather system approaching from the southwest. Highs will range from the upper 40s north to the lower 50s south. East flow at the surface and upper level ridging on Thursday night will provide a dry forecast only to see an upper low track from MO to the southern MI state line, weakening as it moves.
- Flurries this morning and slight chance of freezing drizzle late tonight Red River valley and parts of NE ND/NW MN.
Santa can give Rudolph a break as they get out of the fog in eastern SD and travel west where upper level moisture ahead of a trough has resulted in some high cloud cover but VFR conditions. At the sfc, lee troughing has developed stretching from southern AB into northeastern CO. Behind the trough passage winds will shift from the south to the northwest and modest 3 hr pressure rises of 2-3 mb will support breezy winds.
Mid-level ridging currently extends across the FL Peninsula from over the Caribbean, which is combining with a lingering pocket of dry air (PWAT values 1.
(Today through Thursday) - Cold front pushes over the coastal plains for the rest of tonight. - Chances for showers and storms return on Thursday with the passage of another cold front. The cold front that moved last evening over South Central Texas is pushing across the coastal plains as of 300 AM CST. Overnight lows are forecast to range from the lower 50s to lower 60s. Another cold front is forecast to push across South Central Texas mid to late afternoon on Thursday.
649 AM EST Wed Dec 25 2024 (Today and tonight) Key Messages: Quiet weather day today Discussion: Currently temperatures are hovering right around the freezing mark early this morning with mostly clear skies. With the increased clouds and daytime heating overnight lows will also be several degrees warmer and most of the Valley will stay above freezing overnight.
304 AM MST Wed Dec 25 2024 Cooler temperatures will settle into the region for the next few days before a slight warm up occurs over the weekend.
Temperatures will only rise a few degrees again today with afternoon highs generally in the low to mid 40s. Lows will fall into the upper 30s to the lower 40s. On Thursday, mid level southwest flow will begin to increase between a mid level ridge and the next weather system approaching from the southwest. Highs will range from the upper 40s north to the lower 50s south. East flow at the surface and upper level ridging on Thursday night will provide a dry forecast only to see an upper low track from MO to the southern MI state line, weakening as it moves.
615 AM EST Wed Dec 25 2024 (Today and tonight) A warming and moistening trend continues today and tonight while high pressure centered to the north keeps fairly light northeasterly winds over the area. No rain is expected today with a bit of mid level ridging overhead, but a few showers may begin to develop later tonight as the ridging breaks down.
513 AM EST Wed Dec 25 2024 High pressure over the northeast United States will expand down the east side of the Appalachians today and tonight with abundant cloud cover and temperatures slightly above normal. By the end of the week the high will move offshore and low pressure approaching from the center of the country will bring the next chance of widespread precipitation.
In the upper levels, shallow ridging will hold over Florida today before a weak trough passes through tonight and Thursday.
644 AM EST Wed Dec 25 2024 While strong high pressure centered over the Saint Lawrence valley will guarantee fair dry weather through Christmas and the immediate days to follow.
A weak cold front will push through northern Arizona from the west this morning, resulting in colder temperatures, breezy winds, and isolated showers towards the north and east. Current temperatures still remain on the warmer side with most locations, including here in Bellemont, above 32 degrees. Breezy southwest winds have also been persistent this morning with 15-25 mph gusts for much of the High Country. By 8-9 am MST, the cold front will likely be positioned across northeast Arizona with greater chances for rain and high elevation snow showers above 6500 feet from the Chuska Mountains northward into the Four Corners. Current water vapor imagery shows a pocket of dry air moving into northern Arizona as the center of the trough lifts northeastward, further into Utah.
Low stratus and dense fog has persisted over a large portion of the central US early Christmas morning (perhaps prompting the need for a certain reindeer's glowing nose to guide Santa's way through the low visibilities). That said, a deck of low stratus is expected to remain in place keeping temperatures from warming much above the low 40s across the area. With the upper low track staying just south of the area, the strongest mid and low- level lift will reside across far eastern Kansas Thursday afternoon and evening. Due to the WAA pattern during the day Thursday, expect warmer afternoon temperatures, topping out in the low to mid 50s.
Precipitation will continue to shift eastward early today as the trough lifts through Idaho. As snow levels come crashing down to valley floors behind the cold front, many valley locations could begin to see accumulating snowfall by mid-morning with up to an inch or two expected for many of our low elevation population centers along the I-15 corridor. Winds will peak across the south hills early this morning as the cold front shifts through with winds remaining breezy today through early afternoon, gusting to around 35 mph for much of that period. Daytime highs will continue to run above normal during this next system, making the timing of the cold front and thus snow levels, precipitation type, and timing of transition complicated aspects of the forecast.
This will allow mostly clear skies this morning to gradually have an increase in cloud cover throughout the day today as the aforementioned high pressure moves eastward.