Aikyam-Lab/Synoptic-Bench huggingface dataset:
235 PM CDT Tue Oct 31 2023 Low pressure moving across the region will bring cold temperatures and gusty northwest winds to central Illinois this evening along with the potential for a few flurries or light snow showers mainly near and north of the I-74 corridor.
Stout/gusty south-southwest winds will commence Wednesday, in response to strengthening High Plains low pressure.
706 PM EDT Tue Oct 31 2023 An upper level trough will move across the eastern U. over the next few days helping to drive a surface cold front south across the region later tonight and Wednesday morning. This high will move across the eastern U.
The high will shift ewd on Wed with swly winds and warm advection beginning. Roads could become quickly snow covered, especially bridges and overpasses. Skies will become mostly clear overnight as low pressure pulls away, with dry weather Wednesday under high pressure.
The convergence zone will weaken rapidly, however, after Wed 00Z as the trough continues its southeastward progression. As far as temperatures, some clearing as ridging overspreads the area will result in strong radiational cooling across the interior west, resulting in overnight lows in the mid teens.
As this will be the first occurrence of sub-freezing temperatures (and frost) this season for locations in the warned area, efforts should be made to protect outdoor pipes, pets, and sensitive vegetation overnight. Although many locations will be in the low 50s at sunset, temperatures will quickly fall into the 30s and 40s by mid-evening. The Freeze Warning for Wednesday morning has been expanded northward to include those counties that largely missed the freezing temperatures this morning. Despite abundant sunshine and unseasonably low dew points, the chilly start to the day will mean cooler high temperatures across North Central and Northeast Texas (only in the lower 50s).
618 PM CDT Tue Oct 31 2023 Low pressure moving across the region will bring cold temperatures and gusty northwest winds to central Illinois this evening along with the potential for a few flurries or light snow showers mainly near and north of the I-74 corridor.
409 PM MDT Tue Oct 31 2023 The upper ridge in the west will gradually weaken, resulting in a northwest flow early transitioning to a zonal flow late in the week.
Temperatures this evening will be in the mid to low 50s in the Valley and Foothills with the mountains having slightly cooler temperatures in the 40s to low 50s. Temperatures will gradually warm today and tomorrow as we feel the effects of an upper-level ridge.
707 PM EDT Tue Oct 31 2023 Cold front will move well to the south southeast Tonight, with strong high pressure building from the northwest. A much drier and cooler airmass will filter south into the area overnight following this front. Skies will remain cloudy through the night due to a band of mid level clouds under an upper trough.
The clouds entering eastern ND are associated with a surface level trough from southern Canada that will bring the chance for isolated snow showers this evening and overnight. Main driving force will be synoptic rather then frontogentic, helping to keep banding potential on the low scenario side (<10%). Winds will be on the lower side out of the south, so visibility restrictions are not expected to drop below 6 miles. Some ensembles (20%) have indicated the chance for a mixture of precipitation, with brief freezing rain potential.
629 PM CDT Tue Oct 31 2023 (This evening through Wednesday night) A long wave upper level trough continues to trek eastward across the Great Lakes region and upper Ohio Valley downstream from a ridge over the Desert Southwest. At the surface, a 1036mb high pressure is currently centered over central KS and NE and will shift more over MS Valley area by tomorrow. Winds could gust over 30 mph at times tomorrow afternoon as mixing takes place with temperatures rising into the low to mid 60s.
301 PM MDT Tue Oct 31 2023 A generally quiet 24 to 48 hours ahead w/ respect to any potential for precipitation, as the central Rockies remain on the northern & eastern fringe of large scale upper-level ridging encompassing the majority of the southwestern CONUS.
* Gusty winds into the evening hours * Scattered snow showers into early evening, mainly north * Continued cold A cold front will continue to march east across the area and will bring clouds as well as low chances for some light rain/snow, especially east. Forcing from an upper trough will aid in snow shower creation. Otherwise, some decrease in clouds will occur, especially west as high pressure begins to work in overnight. High pressure will build in during the day. Flow from Lake Michigan will be disrupted by the high, so clouds from the Lake will dissipate during the day. Winds will be lower with the high moving in, but temperatures will remain cold. Highs will only reach the lower to middle 40s.
Granted, signficant moisture is confined in the low levels of the atmospheric column, the lack of lift and significant CIN have inhibited shower development in the Florida Keys.
Plan on a warmer day tomorrow with highs in the 50s for the high valleys, and 60s across the plains. Models do indicate that there will be some mid and high level cloud cover over the higher terrain and high valleys from midmorning through the afternoon.
943 PM CDT Tue Oct 31 2023 (This evening through Wednesday) The cold front has cleared most of the region, with only portions of far southeastern Oklahoma beginning to exhibit a wind shift to the west and the northwest. This cold airmass will reinforce the cold temperatures overnight, bringing the coldest evening so far with lows in the low to mid 20s. These cooler temperatures will be enhanced, with a cross examination of the models providing evidence that the winds will decrease to light and variable overnight and begin shifting out of the south.
Lacy (Tomorrow through Tuesday) Surface ridging will shift eastward Wednesday and a warming trend will commence as southerly winds return for the remainder of the week and through the upcoming weekend.
606 PM CDT Tue Oct 31 2023 (This evening through Wednesday) The cold front has cleared most of the region, with only portions of far southeastern Oklahoma beginning to exhibit a wind shift to the west and the northwest. This cold airmass will reinforce the cold temperatures overnight, bringing the coldest evening so far with lows in the low to mid 20s. These cooler temperatures will be enhanced, with a cross examination of the models providing evidence that the winds will decrease to light and variable overnight and begin shifting out of the south.
852 PM CDT Tue Oct 31 2023 Gusty west-northwest winds with continue to lessen overnight as temperatures bottom out in the low to middle 20s.
753 PM EDT Tue Oct 31 2023 A cold front continues to slowly drop southward across north central Florida and will move through the Tampa Bay area overnight and eventually into south FL into Wednesday. An upper level trough will move across the eastern U. over the next few days helping to drive a surface cold front south across the region later tonight and Wednesday morning. This high will move across the eastern U.
Shreveport and Lufkin remain our only sites forecasted just above the freezing mark as far as our ASOS readings are concerned, and we will check off many more counties and parishes after 7am.
644 PM CDT Tue Oct 31 2023 KEY MESSAGES: - Becoming a bit warmer later this week, with the return of precipitation chances this weekend. The potent upper low that brought 2-4 inches over much of eastern MN and WI continues to track away and is now centered over Chicago/Milwaukee areas.
838 PM CDT Tue Oct 31 2023 After further review, did decide to throw in some patchy freezing fog over or near Grand, Fort Gibson and the lower Ark River valley down to Kerr in E OK, as well as Beaver lake in NW AR. Lacy (Tomorrow through Tuesday) Surface ridging will shift eastward Wednesday and a warming trend will commence as southerly winds return for the remainder of the week and through the upcoming weekend.
632 PM CDT Tue Oct 31 2023 (Tonight) Clouds have moved east of the area, as drier air continued spilling to the east in the wake of a cold front passage yesterday. More and mostly unlimited solar insolation has allowed temperatures so far to warm into the low/mid 50s. As with previous guidance, lows across nearly all of the area should tumble below freezing, with lows in most spots from ~24 to 28/29 degrees. Temperatures at 6 PM should range in the upper 40s, with wind chill values in the low/mid 40s, and around 8 PM near 40 and wind chills in the lower 30s - thanks to gusty at times NW-N winds of 10-20 mph.
The lack of cloud cover across our CWA should allow for radiational cooling to take place and help cool overnight temperatures into the low 30s for areas along and south of I-20. Low temperatures tonight will be near to below freezing for a majority of the area. Areas included in the Freeze Warning may experience below freezing temperatures for up to 3-4 hours, which may cause damage to unprotected vegetation and pipes. The main concerns will be below freezing temperatures during the night and of course more fire weather issues during the day.
524 PM MDT Tue Oct 31 2023 A generally quiet 24 to 48 hours ahead w/ respect to any potential for precipitation, as the central Rockies remain on the northern & eastern fringe of large scale upper-level ridging encompassing the majority of the southwestern CONUS.
944 PM EDT Tue Oct 31 2023 Update Following a record-breaking October snow event in and around Muskegon, clearing skies and an area of lighter winds is promoting freezing fog development as temperatures drop into the 20s. Cold northerly winds behind the low then bring chilly conditions tonight with low temperatures in the low to mid twenties. At the lower levels of the atmosphere, southwesterly flow will usher in a more seasonably normal airmass with temperatures warming back toward the lower 50s by this weekend.
517 PM MDT Tue Oct 31 2023 Clear and cool conditions will greet Halloween revelers tonight as northwesterly flow continues along the west side of a building PACNW ridge. Temperatures will average about 5 degrees warmer overnight tonight, with desert valleys just below the freezing mark and mountain locales in the upper teens and 20s. Gunnison) will sink into the low teens again tonight.
628 PM CDT Tue Oct 31 2023 (Tonight through Wednesday night) The mid-level disturbance across the Great Lakes swings through New England into mid week, dragging a locally weak 500mb trough axis offshore tonight. Less cloud cover tonight will allow temperatures to dip back into the 40s, with isolated locations across the ranchlands and in more typically cooler spots like Zapata and Armstrong potentially landing into the upper 30s. With consistent sunshine and building high pressure at the surface on Wednesday, expect highs to rebound another 10 degrees or more for most locations, potentially even touching the upper 60s or low 70s. The High Surf Advisory remains in effect through Wednesday morning and there is a high risk of rip currents likely persisting through Wednesday afternoon.
1146 PM CDT Tue Oct 31 2023 Gusty west-northwest winds with continue to lessen overnight as temperatures bottom out in the low to middle 20s.
318 AM EDT Wed Nov 1 2023 High pressure will build east into the Ohio Valley today.
228 AM MDT Wed Nov 1 2023 The upper ridge in the west will gradually weaken, resulting in a northwest flow early transitioning to a zonal flow late in the week.
Currently at the surface, a cold front is pushing into southern Florida with cooler and drier air filling into the state from the north. Broad high pressure building in behind the front today and tonight will keep breezy north and northeast winds in place, with cold air advection keeping temperatures in the 60s and low 70s over the Nature Coast this afternoon, and mid 70s to around 80 from the Interstate 75 corridor south.
113 AM MDT Wed Nov 1 2023 A dirty ridge hangs over the region through the middle part of this week, which will keep the warming trend going as temps continue their rise back to seasonal normals.
This feature will continue to move east into the forecast area through the morning, while height rises dominate the mid-level pattern on the backside of yesterday's departing trough. Louis metro remain in the low 30s while the remaining sites across the area have cooled into the 20s.
High pressure over the region will allow a warming trend to continue through the end of the week.
346 AM CDT Wed Nov 1 2023 Today and Tonight: continued colder than normal and dry through the period with fire weather concerns today and near record cold temperatures below freezing tonight. Early morning surface analysis had a dry reinforcing cold front just south of the Interstate 20 corridor and a >1032mb high centered over the central Plains. There have been a few gusts out of the north observed with the passage of the cold front along with drier air noted by lower dew points but, the cooler temperatures have been a little slower to materialize as temperatures were still running several degrees above freezing across our northern zones at 3AM. Satellite imagery/RAP analysis showed the axis of the upper level trough that was driving the cold front, already east of Mississippi.
155 AM EDT Wed Nov 1 2023 Cold front will move well to the south southeast Tonight, with strong high pressure building from the northwest. A much drier and cooler airmass will filter south into the area overnight following this front. Skies will remain cloudy through the night due to a band of mid level clouds under an upper trough.
1248 AM CDT Wed Nov 1 2023 (Tonight through Wednesday night) The mid-level disturbance across the Great Lakes swings through New England into mid week, dragging a locally weak 500mb trough axis offshore tonight. Less cloud cover tonight will allow temperatures to dip back into the 40s, with isolated locations across the ranchlands and in more typically cooler spots like Zapata and Armstrong potentially landing into the upper 30s. With consistent sunshine and building high pressure at the surface on Wednesday, expect highs to rebound another 10 degrees or more for most locations, potentially even touching the upper 60s or low 70s. The High Surf Advisory remains in effect through Wednesday morning and there is a high risk of rip currents likely persisting through Wednesday afternoon.
As higher pressure begins to rebuild over the area, winds shift to southerly, and sunny conditions prevail through this afternoon, slightly warmer afternoon high temperatures ranging from the mid 50s to lower 60s are expected for today. For tonight, temperatures will drop into the 30s, with some low lying areas potentially approaching the freezing mark again under clear skies and light winds. Overnight lows will be in the lower to mid 30s, with the colder readings in eastern and southeastern parts of our area will winds will be weaker.
A ridge will strengthen over the next day with light winds and mild temperatures.
Snow showers will be relatively transient as surface ridging building in from the west quickly works to weaken the gradient and back the wind direction while mid-level subsidence shrinks the convective layer depth. The region will remain entrenched within the thermal trough today with 850mb temp hovering around -9C. Highs will be capped in the lower 40s despite a good amount of sunshine early on.
The slight increase in dew point temperatures overnight and the south winds will hold temperatures up into the lower to mid 30s, though a few East Texas areas could still fall into the upper 20s. Highs will warm into the mid 50s east to the lower 60s west with just scattered high clouds passing overhead.
932 PM MDT Tue Oct 31 2023 A generally quiet 24 to 48 hours ahead w/ respect to any potential for precipitation, as the central Rockies remain on the northern & eastern fringe of large scale upper-level ridging encompassing the majority of the southwestern CONUS.
131 AM EDT Wed Nov 1 2023 Cold air continues to enter the region behind an exiting cold front. Cold advection keeps daytime highs on Wednesday well below normal, then Wednesday night should result in freezing temperatures for much of the forecast area.
With high pressure building over the area today, winds tonight will be calm or very light, allowing widespread mid to upper 20s in the Valley. As high pressure builds in today, winds are expected to continue diminishing. The uncertainty is how much and how quickly winds will decrease, so for now, will highlight the low RH in the FWF, and will let the day shift decide on the need for a Fire Danger Statement.
Upper level trough has shifted east of the area with a very cold air mass in place in the lower levels.
1250 AM CDT Wed Nov 1 2023 KEY MESSAGES: - Becoming a bit warmer later this week, with the return of precipitation chances this weekend. The potent upper low that brought 2-4 inches over much of eastern MN and WI continues to track away and is now centered over Chicago/Milwaukee areas.
Early this morning a broad upper trough was located across the eastern US. A low amplitude upper ridge was located across the western coast of the US. At the surface a broad ridge of high pressure was centered across the southern Plains, with a ridge axis extending to the northeast into the mid MS River Valley.
1231 AM CDT Wed Nov 1 2023 After further review, did decide to throw in some patchy freezing fog over or near Grand, Fort Gibson and the lower Ark River valley down to Kerr in E OK, as well as Beaver lake in NW AR. Lacy (Tomorrow through Tuesday) Surface ridging will shift eastward Wednesday and a warming trend will commence as southerly winds return for the remainder of the week and through the upcoming weekend.
312 AM EDT Wed Nov 1 2023 It will be a very chilly start to November, with highs only in the low 40s this afternoon.
124 AM EDT Wed Nov 1 2023 Aviation Following a record-breaking October snow event in and around Muskegon, clearing skies and an area of lighter winds is promoting freezing fog development as temperatures drop into the 20s. Cold northerly winds behind the low then bring chilly conditions tonight with low temperatures in the low to mid twenties. At the lower levels of the atmosphere, southwesterly flow will usher in a more seasonably normal airmass with temperatures warming back toward the lower 50s by this weekend.
910 PM MDT Tue Oct 31 2023 The upper ridge in the west will gradually weaken, resulting in a northwest flow early transitioning to a zonal flow late in the week.
249 AM MDT Wed Nov 1 2023 Cold air over Yellowstone Park (temperatures 10-15 degrees) has enhanced lee troughing along the foothills.
1037 PM MDT Tue Oct 31 2023 The cold airmass that has entrenched the area will slowly erode a bit over the next few days as warmer air has finally spilled to the east of the Continental Divide in MT.
Broad high pressure forecast for the region through the next several days with little change expected to the forecast. An impressively quiet short term forecast expected due to broad high pressure over the western CONUS. Now that northerly flow has shifted east of the area, light winds and slightly warmer temperatures are expected today and again tomorrow.
1214 AM CDT Wed Nov 1 2023 (This evening through Wednesday night) A long wave upper level trough continues to trek eastward across the Great Lakes region and upper Ohio Valley downstream from a ridge over the Desert Southwest. At the surface, a 1036mb high pressure is currently centered over central KS and NE and will shift more over MS Valley area by tomorrow. Winds could gust over 30 mph at times tomorrow afternoon as mixing takes place with temperatures rising into the low to mid 60s.
400 AM EDT Wed Nov 1 2023 An Arctic cold front will cross the region this morning. Canadian high pressure will build over the area through late week. The Arctic cold front currently pinned along the NC mtns and foothills will start to advect east over the next few hours.
Despite warmer temperatures today, the dry airmass and wind will add a chill to the air.
(Today) The surface cold front has made it through the entire CWA within the last 6 hours taking with it lingering high clouds and ushering in much cooler air tonight. While we have high confidence our freeze warning will verify for temperatures below 32 degrees, with the higher winds, temperatures may not fall below 28 degrees prior to sunrise. With todays forecast, we do not meet any criteria for a fire weather product but caution is still heavily advised as dry conditions and RH in the high 20%-mid 30% range will still produce ample fuels for fires.
A ridge of high pressure at the sfc has drifted across the forecast area today, slackening gusty winds that began the day in our eastern zones and switched wind direction around to the west to southwest across our western zones. Temperatures should modify, aided by the fropa, with warmer daytime readings in the upper 30s to low 40s, although a deck of strato-cu or stratus advecting in behind the sfc boundary could curtail an early afternoon bump up in temperatures. Occasionally, s/w energy rides and knocks down the ridge, but mean ridging remains in place over the western CONUS, with mean troffing in the eastern CONUS. South winds this morning will shift southwest then northwesterly with the approach and then passage of a cold front respectively.
1119 PM MDT Tue Oct 31 2023 Clear and cool conditions will greet Halloween revelers tonight as northwesterly flow continues along the west side of a building PACNW ridge. Temperatures will average about 5 degrees warmer overnight tonight, with desert valleys just below the freezing mark and mountain locales in the upper teens and 20s. Gunnison) will sink into the low teens again tonight.
319 AM EDT Wed Nov 1 2023 - Lake effect snow tapers off after daybreak - Sunny and quiet weather returns with high pressure building in High pressure centered over the Central Plains is extending ridging into the Great Lakes for today. Elsewhere, though, expect lows ranging in the lower to mid 20s. Upper air pattern consists of a broad 500 mb trough across most of the U. with a ridge on the west coast 00z Thu. By 12z Mon, a trough moves into the upper Great Lakes as a ridge builds into the Rockies. This trough digs into the ern U.
These southwesterly winds combined with full sunshine will lead to another nice bump up in afternoon temperatures with most locations in the lower 60s.
As higher pressure begins to rebuild over the area, winds shift to southerly, and sunny conditions prevail through this afternoon, slightly warmer afternoon high temperatures ranging from the mid 50s to lower 60s are expected for today. For tonight, temperatures will drop into the 30s, with some low lying areas potentially approaching the freezing mark again under clear skies and light winds.
Highest gusts will be east of I-29, especially around the eastern Buffalo Ridge area, where 25-30 mph are possible.
Throughout today, the aforementioned upper trough will move off to the east, and in doing so it will cause upper flow to transition into zonal flow by tomorrow morning. This combined with increasing mid/upper level heights and low level thicknesses should make each subsequent day warmer than the previous heading into the weekend.
225 AM CDT Wed Nov 1 2023 Today our northwest flow aloft starts to become more zonal as the upper trof moves off the New England coast.
635 AM EDT Wed Nov 1 2023 - Lake effect snow tapers off after daybreak - Sunny and quiet weather returns with high pressure building in High pressure centered over the Central Plains is extending ridging into the Great Lakes for today, which should lead to more sunshine and generally dry conditions today. This has kept temperatures several degrees warmer than expected across the southern UP, but with skies clearing out and a couple more hours until daybreak, we should still see some readings in the lower to mid teens. Upper air pattern consists of a broad 500 mb trough across most of the U. with a ridge on the west coast 00z Thu. By 12z Mon, a trough moves into the upper Great Lakes as a ridge builds into the Rockies. This trough digs into the ern U.