Aikyam-Lab/Synoptic-Bench huggingface dataset:
339 PM EDT Tue Sep 19 2023 Unsettled and cool weather across the region will gradually come to an end tonight as an upper low departs. High pressure returns for Wednesday and dominates the region's weather through the upcoming weekend, bringing dry conditions and slightly above normal temperatures. As the upper low moves northeastward, showers across the region should gradually diminish after sunset although some showers may linger across portions of the Greens. Some cooler spots in the Adirondacks dropping into the upper 30s and locations near Lake Champlain staying in the low 50s. With the abundant moisture from the recent rainfall and the high pressure building overhead, there will be a favorable environment for fog development, especially in the usual river valley locations.
(Tonight through Wednesday night) An upper-level ridge continues to build over western Texas limiting any rain chances to the lower Texas coast and coastal waters.
1105 AM EDT Tue Sep 19 2023 Trough aloft with pool of cool air aloft crossing the region will result in scattered showers into early this afternoon southeast and east of Lake Ontario. High pressure building into the region will break up the lake cloud cover southeast and east of the lakes through this afternoon. High temperatures will be near 70 at lower elevations and will remain in the 60s across the higher terrain of the Southern Tier and may not even reach 60F for the Tug Hill and western Adirondacks. High pressure arrives tonight, becoming centered across the eastern Great Lakes and Appalachians. Highs Wednesday will climb up into the mid to upper 60s across the higher terrain and the low to mid 70s across the lower elevations.
(Tonight through Wednesday night) As upper-level ridging continues throughout the short term, dry conditions can be expected to continue tonight. Above-normal daytime highs are expected Wednesday as temperatures are expected to climb into the lower to mid 90s near the coast to the mid to upper 90s inland with overnight lows dropping into the lower to upper 70s.
121 PM EDT Tue Sep 19 2023 High pressure will build into the region today and persist through the end of the week. Surface features remain the same with high pressure settling into the Great Lakes. A low pressure system over the central plains region will track north northeastward in the near term towards the arrowhead of Minnesota.
505 PM EDT Tue Sep 19 2023 Low pressure will exit across the Maritimes tonight.
859 PM MDT Tue Sep 19 2023 The pattern will become more active in the next several days due to the impact of the trough along the west coast. Today's convection from forcing ahead of the trough along with daytime heating has begun to bubble across far western and southwestern WY. Wednesday the low will still be along the PacNW coast, but the midlevel flow will be more off the Pacific, bringing more moisture into the region.
524 PM MDT Tue Sep 19 2023 Aviation Section Updated Cooler air has filtered into the region over the past 24 hours, which has resulted in temperatures being 5 to as much as 20 degrees cooler than they were at this time yesterday. This cooler air will linger through the end of the week, and a weather system arriving Wednesday night will bring widespread soaking rainfall to the area, along with some higher elevation snowfall. Noticeably cooler air has worked its way into the area as high pressure builds in. Aside from the cooler air, skies are mostly clear, though there is some noticeable smoke from prescribed burns locally and even a few wildfires in the broader Northern Rockies region. Tomorrow will feature more of the same, with similar to slightly cooler temperatures across the region.
712 PM EDT Tue Sep 19 2023 Unsettled and cool weather across the region will gradually come to an end tonight as an upper low departs. High pressure returns for Wednesday and dominates the region's weather through the upcoming weekend, bringing dry conditions and slightly above normal temperatures. As the upper low moves northeastward, showers across the region should gradually diminish after sunset although some showers may linger across portions of the Greens. Some cooler spots in the Adirondacks dropping into the upper 30s and locations near Lake Champlain staying in the low 50s. With the abundant moisture from the recent rainfall and the high pressure building overhead, there will be a favorable environment for fog development, especially in the usual river valley locations.
731 PM EDT Tue Sep 19 2023 Dry high pressure will dominate our weather through the work week.
327 PM PDT Tue Sep 19 2023 A significant pattern change will develop into Wednesday, leading to much cooler temperatures and a very good chance of precipitation.
259 PM PDT Tue Sep 19 2023 A significant pattern change will develop into Wednesday, leading to much cooler temperatures and a very good chance of precipitation.
716 PM EDT Tue Sep 19 2023 Fair weather through the rest of the work week with high pressure in control. Winds will weaken this evening and skies will clear as high pressure builds in from the west.
600 PM CDT Tue Sep 19 2023 Above normal temperatures and small rain chances will characterize the rest of the work week, with higher chances for rain arriving ahead of a low pressure system this weekend. This afternoon, central Illinois falls under a moderate southerly gradient between a ridge of high pressure centered over the mid Atlantic coast and an elongated area of low pressure over the Great Plains. Despite increasing cloud cover and the threat for scattered showers, temps will warm into the lower to mid 80s again Wednesday. Deubelbeiss A closed upper low is expected for form over the Pacific Northwest late in the week within a broader upper trough spanning the western CONUS into the Great Plains.
A ridge affects our region through the end of this week. Simultaneously, the core of this ridge moves from the Mid Ohio Valley to Atlantic waters near the Canadian Maritimes. Primarily fair weather is expected due to the prevalence of stabilizing subsidence and a relatively- dry low- level air mass accompanying the ridge.
(Tonight) As high pressure remains stationed to our east, dry conditions continue to prevail throughout the TN Valley.
A strong cold front is still on track to move through the area Wednesday, increasing winds and bringing much cooler air into the region.
609 PM CDT Tue Sep 19 2023 (Tonight through Wednesday night) An upper-level ridge continues to build over western Texas limiting any rain chances to the lower Texas coast and coastal waters.
737 PM EDT Tue Sep 19 2023 High pressure will build over the region for the rest of the week. High pressure will build into the area tonight. High pressure over the area Wednesday will lead to a day of plenty of sunshine with only a small amount of diurnal cloud cover. A strong area of high pressure will reside across the eastern Great Lakes region through the period. A mid-level trough cutting across the Hudson Bay will be a key factor to what happens with the moisture from the low pressure system tracking along the Southeast coast. This is due 12Z GFS/ECMWF showing a drier forecast with the coastal low stalling along the Mid- Atlantic, and then getting swept out to sea by an advancing cold front.
430 PM MDT Tue Sep 19 2023 The pattern will become more active in the next several days due to the impact of the trough along the west coast. Today's convection from forcing ahead of the trough along with daytime heating has begun to bubble across far western and southwestern WY. Wednesday the low will still be along the PacNW coast, but the midlevel flow will be more off the Pacific, bringing more moisture into the region.
527 PM MDT Tue Sep 19 2023 A West Coast split flow pattern persists today with the southern stream upper low just approaching the SoCal area late this afternoon. outflow driven storms coming off the high plateaus. This shift in the flow aloft will be bring in drier air and wind which will bring a downturn in the convection but increase the threat of localized critical fire weather conditions to some of the lower elevations. The low to our Southwest will be shearing out across our CWA tomorrow night with some isolated convection forming through the predawn hours as it moves through.
Ridging aloft remains strong to our SW while at the surface, high pressure continues to slide east across the NE CONUS.
637 PM EDT Tue Sep 19 2023 Fair weather through the rest of the work week with high pressure in control. Winds will weaken this evening and skies will clear as high pressure builds in from the west.
Showers extending from the Chicago area to northwest Ohio have developed along a weak mid level short wave north of a surface warm front. The elevated portion of the warm front will advance into southern Michigan overnight. Early afternoon observations and model initialization fields indicate mid level moisture transport was strong enough to support new daytime elevated convection in southern WI back toward the surface warm front in IA/IL. The warm front is not well defined at the surface in Lower Mi by Wednesday morning within a weaker pressure gradient compared to upstream this afternoon. The mid level ridge builds overhead and becomes diffuse due to the central Plains circulation as it moves into the mid MS valley. Highs in the lower 70s are right on normal values for mid September.
936 PM EDT Tue Sep 19 2023 Low pressure will exit across the Maritimes overnight.
721 PM EDT Tue Sep 19 2023 Building high pressure will provide dry conditions through the week, with potential for foggy river valleys each morning.
507 PM MDT Tue Sep 19 2023 Water vapor shows deepening upper trof over the western CONUS with lead short wave extending from SASK southward into the Central Rockies. At the surface, trof/cold front is shifting through the central/eastern Dakotas. Wide ranging early afternoon temps from the lower 70s in northeast WY. An additional few showers/storm possible later tonight across northwest SD within a bit better lift associated with short wave/trof. On Wednesday, main upper low reforms over the Pac NW, with increasing southwest flow through the Northern Plains.
810 PM EDT Tue Sep 19 2023 High pressure remains in control through the end of the work week providing dry weather and a slow warming trend, with river valley fog developing at night. Dry weather will persist courtesy of high pressure over the mid- Atlantic. Temperatures tomorrow will be a few degrees warmer than today with highs reaching the upper 70s and low 80s in the lowlands.
732 PM EDT Tue Sep 19 2023 High pressure gradually shifts offshore through midweek with dry conditions and pleasant temperatures. A coastal low or coastal trough is forecast impact the area late in the week into the weekend. Ridging aloft and at the surface persists tonight, with calm winds and efficient radiational cooling bringing cool temps and dry conditions. Strong ridging pattern continues Wednesday with dry conditions and only some scattered afternoon cu for cloud coverage. Ridging will be the dominate feature through midweek leading to a calm, clear, and dry couple of days.
Look for somewhat active weather through the latter portions of the week with much cooler temperatures by the late week period. For the short term, upper level low pressure in southwest Canada will dive to the south and across the northern Rockies. There is also another upper low that will move into southern California and will merge with the upper low to the north. For Wednesday and Wednesday night, models show the aforementioned low pressure systems coming together.
Main cold front with NW wind moving east and from west of Winnipeg to near Rugby to east of Bismarck. Behind the main cold front smoke does seem much less upstream with vsbys Brandon to Regina 15SM. Wednesday looks to be slightly cooler than today, with afternoon highs in the upper 70s to middle 80s.
1040 PM EDT Tue Sep 19 2023 High pressure will build over the region for the rest of the week. High pressure will build into the area tonight. High pressure over the area Wednesday will lead to a day of plenty of sunshine with only a small amount of diurnal cloud cover. A strong area of high pressure will reside across the eastern Great Lakes region through the period. A mid-level trough cutting across the Hudson Bay will be a key factor to what happens with the moisture from the low pressure system tracking along the Southeast coast. This is due 12Z GFS/ECMWF showing a drier forecast with the coastal low stalling along the Mid- Atlantic, and then getting swept out to sea by an advancing cold front.
Temperatures will also stay at or below 90 degrees for the high.
917 PM EDT Tue Sep 19 2023 A ridge affects our region through the end of this week. Simultaneously, the core of this ridge moves from the Mid Ohio Valley to Atlantic waters near the Canadian Maritimes. Primarily fair weather is expected due to the prevalence of stabilizing subsidence and a relatively- dry low- level air mass accompanying the ridge.
600 PM EDT Tue Sep 19 2023 High pressure will build over the region for the rest of the week. High pressure will build into the area tonight. High pressure over the area Wednesday will lead to a day of plenty of sunshine with only a small amount of diurnal cloud cover. A strong area of high pressure will reside across the eastern Great Lakes region through the period. A mid-level trough cutting across the Hudson Bay will be a key factor to what happens with the moisture from the low pressure system tracking along the Southeast coast. This is due 12Z GFS/ECMWF showing a drier forecast with the coastal low stalling along the Mid- Atlantic, and then getting swept out to sea by an advancing cold front.
640 PM CDT Tue Sep 19 2023 (This afternoon through Wednesday night) Over and around the Permian Basin, high pressure at the surface and aloft for the most part has kept development of convection at bay until recent. However, slightly more moisture returning could produce isolated showers and thunderstorms over the higher terrain of the Davis Mountains and northern Big Bend.
622 PM EDT Tue Sep 19 2023 Low pressure will exit across the Maritimes overnight.
Rain-free conditions and a warming trend will continue through Wednesday as an upper level ridge continues to build east into the region.
/13 (Now through Wednesday) Large upper trough extending from Nova Scotia south-southwestward along the eastern U. A cool and dry airmass, along with northwesterly flow aloft, will persist today into Wednesday morning on the western edge of trough. Warmer temperatures will return Wednesday afternoon as the flow aloft becomes more zonal. High temps will be warmer Wednesday, and should range from 73 to 76 degrees.
This is marking the arrival of warmer and dry air below the inversion. Despite the expansion of an expansive ridge into the area, stratus has held tough over much of the forecast area with clearing limited to the Saginaw Valley. As such, temperatures will remain tempered with highs once again ranging in the lower to mid 50s.
Temperatures will be warmest Wednesday afternoon, mainly in the lower to middle 60s.
Additionally, low pressure will be expanding across the central plains in response to a strong upper level low moving SE across the northern plains. Because of this, not expecting radiational cooling to be as effective tonight and minimum temperatures will likely be several degrees warmer than last night.
Very quiet across the region this afternoon as an upper level ridge axis was passing through. We'll see some higher chances for rain by Wednesday afternoon as some moisture wraps around the back side of the low and pushes through northeast NE into southwest IA. Still looks quite light (maybe a few hundredths of an inch), but model soundings show that this should actually have a better chance of reaching the ground than anything that forms along the cold front. In addition to the precip chances, the cold front and nearby low will bring some pretty breezy northwest winds, with gusts of 25 to 35 mph being fairly common. Upper level ridging over the western CONUS will then begin to flatten out and push eastward for the weekend.
(This evening through Wednesday) A return of southerly surface winds will aid in warmer overnight lows this evening. Much of the area will only get down into the low 50s by sunrise. A weak cold front will move in tomorrow morning and stall across central Oklahoma.
(Remainder of today and tonight) Latest visible satellite imagery continues to indicate gradual dissipation of the low stratus deck that has been in place across the TN Valley for much of the day. This trend is expected to persist and even accelerate through late this afternoon, as subsidence warming in the wake of a mid-level vort max dropping southeastward into southwestern GA begins to to erode the 850-mb thermal trough responsible for the stratus layer. We anticipate visibility reductions to begin around 4Z, with locally dense fog possible between 9-13Z, as temps descend to predicted lows in the u30s-l40s (a few degrees warmer in urban locations and near large bodies of water).
Issued by National Weather Service Pueblo CO 1154 AM MDT Tue Oct 17 2023 Water vapor shows a ridge aloft over the Four Corners area with dry air over Colorado. It also shows a trough moving through Glacier National Park with a stream of upper level moisture ahead of it. The aforementioned ridge will dominate today's weather as the subsident flow will keep conditions dry with mostly sunny skies. Meanwhile, the trough will move east-southeastward throughout the day today and will begin to increase westerly flow aloft. Tonight, a cold front will move through the I-25 corridor and eastern plains bringing gusty northerly winds.
634 PM CDT Tue Oct 17 2023 (This evening through Wednesday Night) Super nice day going with a warmer twist now as the high pressure is starting to drift off to our east. This large area of high pressure will move farther to our east tomorrow and we will see southwest winds for the most part. And then a few higher up ridges will keep a little wind and only drop to around 50 degrees. So climate-wise, we are kinda in between "normal" with another cooler than average night, but our highs will recover to average for the afternoon.
Temperatures currently in the upper 40s to mid 50s will fall into the lower to mid 40s. 14 Previous short-term discussion: (This evening through Wednesday) High pressure will be over the area through the short term with dry weather expected. This will begin to advect moisture and warmer air back into the area. High temperatures on Wednesday will be in the upper 60s to lower 70s, a few degrees below normal for this time of year, but a few degrees warmer than the high expected today.
850 PM CDT Tue Oct 17 2023 Mostly clear and cool conditions will prevail across central Illinois tonight with low temperatures dropping into the lower to middle 40s. Strong southerly winds will develop on Wednesday, which will push afternoon highs into the lower to middle 70s.
629 PM CDT Tue Oct 17 2023 (This evening through Wednesday) A return of southerly surface winds will aid in warmer overnight lows this evening. Much of the area will only get down into the low 50s by sunrise. A weak cold front will move in tomorrow morning and stall across central Oklahoma.
611 PM CDT Tue Oct 17 2023 (This evening through Wednesday) An weak upper-level ridging will remain in place across the area through Wednesday, with light southerly flow persisting at the surface through Wednesday morning. Given the sunny conditions today and continued southerly flow into tonight, we should see slightly warmer overnight lows ranging from the lower 40 to lower 50s. There is a chance for some breezier conditions to mix down overnight and into Wednesday morning as a very weak upper-level disturbance tracks through the area ahead of a weak cold front that passes through West Central Texas later on Wednesday.
627 PM CDT Tue Oct 17 2023 (Tonight through Wednesday night) High pressure ridge axis is roughly from KMFE to KRKP, out over the Gulf to KHUM. As the High continues to move to the east tonight, the winds will gradually shift east and continue to veer to the south by Wednesday morning. Temperatures will be a bit warmer tonight, Wednesday, and Wednesday night as the south to southeast flow continues, to bring in a warmer air mass.
659 PM CDT Tue Oct 17 2023 (Remainder of today and tonight) Latest visible satellite imagery continues to indicate gradual dissipation of the low stratus deck that has been in place across the TN Valley for much of the day. This trend is expected to persist and even accelerate through late this afternoon, as subsidence warming in the wake of a mid-level vort max dropping southeastward into southwestern GA begins to to erode the 850-mb thermal trough responsible for the stratus layer. We anticipate visibility reductions to begin around 4Z, with locally dense fog possible between 9-13Z, as temps descend to predicted lows in the u30s-l40s (a few degrees warmer in urban locations and near large bodies of water).
Current water vapor and upper air analysis shows upper low over north central MT. Westerly flow sits aloft our region, with mild ridging east of the forecast area. Temperatures sit at the low to mid 70s for most of the region this afternoon. Later tonight into Wednesday the upper trough and associated surface frontal boundary slides southeastward through our region.
510 PM MDT Tue Oct 17 2023 Current water vapor and upper air analysis shows upper low over north central MT. Westerly flow sits aloft our region, with mild ridging east of the forecast area. Temperatures sit at the low to mid 70s for most of the region this afternoon. Later tonight into Wednesday the upper trough and associated surface frontal boundary slides southeastward through our region.
This should reach the metro an hour or two after midnight, and should keep tomorrow's highs a bit cooler than today. Key messages: 1) Modestly cooler Wednesday. Upper trough passes mostly to the northeast of the region with a dry cold front moving across the eastern plains and I25 corridor tonight. Cooler air mass will be over the eastern plains and I25 corridor.
KNQA and KLZK VAD wind profiler show south/southeast winds 10-15ks in the lowest 2000ft. This was not the case at KGWX, where east/northeasterly winds of 10-20kt prevailed in the lowest two gates. RTMA surface analysis shows temps near the TN River and northeast MS running 3 to 6 degrees cooler than last night, a result of last night's cloud cover over those areas. Elsewhere, 9 PM temps are running 0-2 degrees warmer than 24 hours ago. PWB Rain-free conditions and a warming trend will continue through Wednesday as an upper level ridge continues to build east into the region.
Visible satellite imagery showing a band of high-level cirrostratus continuing its way east across Minnesota this afternoon with temperatures ranging in the low 60s except for Western Wisconsin where its slightly cooler in the upper 50s due to a lag in the decrease of cloud cover earlier this morning. Temps are warmer across the Buffalo Ridge where cloud cover has passed and allowed for sites are reporting near 70 degrees this afternoon. Per latest guidance, the track of this low has slowed a bit. Temperatures will be a few degrees cooler as surface winds shift from southeasterly to northwesterly.
Conditions will remain a touch warmer than last night, however, with Wednesday morning lows generally in the upper 40s to lower 50s. Wind speeds will increase markedly on Wednesday in advance of an upper level low in the Plains and the next cold front. Compressional warming ahead of the front will allow Wednesday high temperatures to range from the upper 70s to upper 80s, with the highest readings occurring across the western-most zones.
637 PM CDT Tue Oct 17 2023 (This evening through Wednesday night) Fairly benign weather expected across the local area through mid week as upper level through already east of the CWA continues moving east and weak ridge/zonal flow passes across the northern Gulf Coast.