Aikyam-Lab/Synoptic-Bench huggingface dataset:
313 PM CDT Mon Sep 12 2022 Tonight through Tuesday: A slow-moving upper level trough extending from the Great Lakes region through the lower Mississippi Valley region will support continued low level cool air advection over the forecast area through the near term.
1220 PM CDT Mon Sep 12 2022 A warming trend will commence today with the area under northwest flow aloft between the upper low moving into the southern Great Lakes region and upper ridge axis migrating from the interior West to over the Rockies. The upper ridging will move eastward across the Plains during Tuesday with corresponding low level thickness rises/warming resulting in the return of a more intense heat with highs into the 90s again across central and southern Kansas.
137 PM MDT Mon Sep 12 2022 Near normal temperatures are expected through the remainder of the work week in wake of a cold front. Upper level ridging begins to weaken and move east as an upper level trough develops to our Pacific Northwest, bringing multiple weather disturbances beginning tonight.
924 PM EDT Mon Sep 12 2022 A cold front associated with an area of low pressure over the Great Lakes will move through the area overnight. High pressure will build in behind the front for the the remainder of the week. Slow moving cold front is currently crossing I-81 and is still firing a few showers and isolated thunderstorms. The slow moving front will push east of the Blue Ridge Mountains after 06Z and east of the Chesapeake Bay around 12Z. The aforementioned upper level low will lift northeastward toward Lake Ontario tomorrow, with much drier air filtering into the area within post cold frontal westerly flow.
835 PM MDT Mon Sep 12 2022 Near normal temperatures are expected through the remainder of the work week in wake of a cold front. -RCG 545 PM MDT Mon Sep 12 2022 (13/00Z TAF period) Mid- and high level clouds are increasing over the northern Rockies as a more moist southwesterly flow aloft develops ahead of an approaching Pacific trough. /ISSUED 137 PM MDT Mon Sep 12 2022/ Upper level ridging begins to weaken and move east as an upper level trough develops to our Pacific Northwest, bringing multiple weather disturbances beginning tonight.
The front will cross the ridges this evening, taking any lingering shower activity with it. Lawrence River Valley, with the upper low degrading into an open wave. These showers will then pull north of the region Tuesday night as the upper low departs, with a clearing sky to follow. The trend of slightly below-normal temperature will continue with the passage of the upper low.
TJS (This evening through Tuesday night) The cold front will continue pushing through the area this evening with noticeably drier air behind it. Surface ridging will build in behind it which will allow for efficient radiational cooling to take place, especially for areas along and north of I-10/12. The low tempertures for Tuesday night will be just as cool as tonight, if not cooler, as high pressure continues to build in.
but don't be fooled by the cooler temps and lack of humidity of the False Fall. (This afternoon through Tuesday) A surface cold front continues to slowly push through the NW portion of the state this aftn ushering in some lower dewpoint temperatures and clearing sky conditions. Did someone say fall? Tuesday morning low temperatures will range from the low 50s across north GA to mid 60s across southeast GA (roughly 2-5 degrees below normal). Dry conditions expected on Tuesday with high temperatures in the low to mid 80s.
404 PM MDT Mon Sep 12 2022 Current surface map trough across northeast Wyoming/northwest South Dakota. with weak cold front across northern Montana. Thick smoke layer aloft trapped in upper level ridge, while surface based smoke is starting to limit visibility behind the trough. Period of breezy northwest winds are expected behind the trough this afternoon. Upper ridge remains in place Tuesday with more smoke/haze.
Smoke continues to push in aloft, following along the upper ridge. At the sfc, low pressure will set up across central SD tonight with some light southerly breezes already ahead of it. Winds will shift to the east in the northern part of the forecast area behind the low pressure trough on Tuesday and become breezy. The main challenge will be temperatures given the elevated smoke and the placement of the trough.
Near normal temperatures are expected through the remainder of the work week in wake of a cold front. Upper level ridging begins to weaken and move east as an upper level trough develops to our Pacific Northwest, bringing multiple weather disturbances beginning tonight.
(This afternoon through Tuesday) A surface cold front continues to slowly push through the NW portion of the state this aftn ushering in some lower dewpoint temperatures and clearing sky conditions. Did someone say fall? Tuesday morning low temperatures will range from the low 50s across north GA to mid 60s across southeast GA (roughly 2-5 degrees below normal). Dry conditions expected on Tuesday with high temperatures in the low to mid 80s.
715 PM EDT Mon Sep 12 2022 An upper level low will move slowly east across the lower Great Lakes from today through Tuesday causing scattered showers and cool temperatures. High pressure will build in from midweek into the weekend providing mostly sunny skies and warmer temperatures. Clouds and showers associated with upper low over northern Indiana will spread into the northwestern part of the forecast area late today. The upper low will move across the region tonight into Tuesday. Lows tonight will dip into the the mid 50s, with highs on Tuesday reaching the low to mid 70s. Expect lows Tuesday night to drop into the lower and middle 50s. Mid level ridge to build over the Mid and Upper MS Valley at mid week.
602 PM CDT Mon Sep 12 2022 (This evening through Tuesday Night) A fair weather pattern is expected tonight over Southeast TX as somewhat drier air mass sits over much of the region and a surface weak cold front continues to linger over the Gulf waters. Another "cool" night is in store with overnight low temperatures ranging between the mid to upper 60s over areas north of I-10 and in the low to mid 70s over areas south of I-10. With the cold front still residing over the coastal waters, drier air persisting from the surface to mid levels, and ridging aloft, shower and thunderstorm development will be limited on Tuesday.
(Tonight through Tuesday) A much drier and cooler air mass has settled over Central Alabama. There's only a small chance for isolated or scattered showers/storms across the southeast this afternoon as the mid-level portion of the trough passes by, but the drier air should greatly limit coverage. Cool, Fall-like temperatures are expected in the morning with lows ranging from the lower 50s northwest to lower 60s southeast. For now, the entire CWA has zero PoPs in the forecast for at least the next 5 days as ridging remains in place at the surface and aloft.
However, the lowering heights sampled at KKEY tonight are an indication that the ridge is sliding eastward.
940 PM EDT Mon Sep 12 2022 A cold front will head toward the East Coast tonight, which will end the threat of showers and thunderstorms across the Mid Atlantic. High pressure should arrive by Tuesday to provide dry weather through the remainder of this week. A cold front is approaching the Blue Ridge at this time, which is helping to trigger scattered showers and thunderstorms. The storms should gradually fade during the next couple hours, and the cold front will depart toward the East Coast. Drier air will arrive from high pressure building from the northwest. Morning temperatures will range from the low 50s across the mountains to the upper 50s to lower 60s across the foothills and piedmont.
(This evening through Tuesday) An appreciable warming trend continues tomorrow as a mid-level ridge across the western United States expands eastward into the Plains in tandem with a low-level thermal ridge.
845 PM EDT Mon Sep 12 2022 Showers and storms will continue to diminish across the area this evening as a weak cold front continues to push southeastward into the area. (Through Tuesday) As a cold front moves through the area tomorrow we'll have drier and relatively cooler air moving in across our NW counties. Overnight lows for the NW half of the area are also expected to be cooler, in the mid to upper 60s, while the SE half is in the low 70s.
Broad low pressure sits over the northeast Pacific through the next few days. Onshore flow will persist bringing marine stratus and cooler conditions through the week.
638 PM CDT Mon Sep 12 2022 Tonight through Tuesday: A slow-moving upper level trough extending from the Great Lakes region through the lower Mississippi Valley region will support continued low level cool air advection over the forecast area through the near term.
725 PM MDT Mon Sep 12 2022 Weak cold front/wind shift line is moving through the area this evening, located from along the Beartooth front to near Ashland and east to near Alzada. Chambers A ridge of high pressure will slowly slide east through the central and northern Rockies through Tuesday. Look for slightly cooler temps on Tuesday behind the front. As the ridge axis shifts east, southwest flow will develop over our mountains late Tuesday resulting in a few showers over the Absaroka/Beartooths by Tuesday evening.
740 PM EDT Mon Sep 12 2022 (Through Tuesday) As a cold front moves through the area tomorrow we'll have drier and relatively cooler air moving in across our NW counties. Overnight lows for the NW half of the area are also expected to be cooler, in the mid to upper 60s, while the SE half is in the low 70s.
A cold front continues to progress through central North Dakota bringing breezy winds behind the front. A cold front continues to move through the northwest part of state bringing cooler temperatures to the region. Farther north, cooler temperatures and increasing humdities behind the front will limit fire weather conditions. To the south of the front, over far west central and southwest North Dakota, it will be warmer, but winds are currently not expected to be strong enough to warrant critical fire weather conditions. Tuesday will be breezy but cooler with highs in the 60s north to 70s south, and afternoon humidities will drop to around 25 percent in the northwest and far southwest with sustained winds around 15 to 20 mph.
627 PM CDT Mon Sep 12 2022 (Tonight through Tuesday night) The boundary is stalled across the southern section of the CWA, and will lift as a warm front later today into tonight.
552 PM CDT Mon Sep 12 2022 (Tonight) An upper low is spinning across the Great Lakes Region with a cold front out ahead and to its south draped along the Eastern Seaboard. The upper level pattern shows ridging over the Western CONUS and troughing over the Eastern CONUS. Over the Tennessee Valley, the post frontal airmass continues to advect in drier and cooler air from the north. Current afternoon observations show dewpoint temperatures falling down into the lower 50s to upper 40s. Temperatures will fall quickly after sunset with overnight lows in the lower 50s.
A cooler weather pattern across Western Washington for much of the week. An upper low will move through tonight and Tuesday for increasing onshore flow and slight rain potential. An upper low will move along the coast this weekend for cooler temperatures and increasing precipitation potential.
908 PM CDT Mon Sep 12 2022 (Issued 908 PM CDT Mon Sep 12 2022) Lingering rain showers continue to drop north to south through the forecast area this evening on the back side of low pressure to the southeast. The showers will wind down west to east later this evening into tonight as the low pulls away. Clouds and rain will return later this afternoon into this evening though, as the upper level low finally starts to pull east of the area, and the back side of the systems moves through.
835 PM EDT Mon Sep 12 2022 A cold front will cross the area tonight as remaining showers and thunderstorms move offshore.
Temperatures are falling quickly, however given high dewpoints, they shouldn't fall too significantly, even with the addition of the cold front. This will help drop a cold front down into our counties overnight.
619 PM CDT Mon Sep 12 2022 A cold front continues to move through the northwest part of state bringing cooler temperatures to the region. Farther north, cooler temperatures and increasing humdities behind the front will limit fire weather conditions. To the south of the front, over far west central and southwest North Dakota, it will be warmer, but winds are currently not expected to be strong enough to warrant critical fire weather conditions. Tuesday will be breezy but cooler with highs in the 60s north to 70s south, and afternoon humidities will drop to around 25 percent in the northwest and far southwest with sustained winds around 15 to 20 mph.
708 PM EDT Mon Sep 12 2022 The closed/stacked low pressure system positioned near the south end of Lake Michigan begins an eastward move tonight. A big cyclonic swirl, (+36 1e-5s abs vorticity) closed upper level low pressure system, is slowly churning/drifting across the Michiana region this afternoon. Strong geopotential heights will rise differentially across Southeast Michigan in response to the closed upper level low drifting east of Southeast Michigan.
643 PM CDT Mon Sep 12 2022 (Tonight through Tuesday night) A low pressure system centered over the Great Lakes region will continue to slide northeastward through the short term period with an associated cold front extending all the way into southern Texas. This boundary is expected lift northward this afternoon as a warm front. While the boundary will remain well north of the CWA Tuesday, weak coastal troughing will keep a slight chance of isolated shower and thunderstorm activity in the forecast for mainly coastal counties and over the waters. Temperatures will remain near normal with highs generally in the 90s and overnight lows in the low to mid 70s.
215 PM PDT Mon Sep 12 2022 Cooler temperatures will be the main story for this week. Confidence is high that cooler and drier conditions will move into the region closer to the mid-week period as the moist tropical air-mass is pushed eastward â along with what monsoonal moisture was able surge into the area.
As high pressure continues to build over the region, calm winds and drier air will allow for temperatures to fall quickly overnight. Several ob sites have already fallen into the lower 60s, and dew points suggest there's a few more degrees of cooling potential left. And winds will be fairly light with the high pressure axis expected to be over a line from Shreveport to Tuscaloosa tomorrow afternoon. Should be another pleasant September day! /NF/ Tonight through Tuesday: A slow-moving upper level trough extending from the Great Lakes region through the lower Mississippi Valley region will support continued low level cool air advection over the forecast area through the near term.
(Tonight) Skies have cleared out and our dew point temperatures are 15 degrees lower than they were at this time last night due to the passage of the cold front.
Cooler temperatures will continue through midweek with scattered to numerous showers and thunderstorms each day. With the ambient atmosphere conditions and trough to our west, expect storms to continue to develop this afternoon, most numerous to the east of I-17 where atmospheric forcing appears to be better. On Tuesday, the slow-moving trough currently over southern California will move across Arizona, and help focus the convection to the northern and eastern portions of Arizona where the greatest moisture remains.
Coastal areas will also see more marine influence with cooler afternoon temperatures and areas of morning low clouds and fog. Night and morning marine clouds are likely, but with the cooler temperatures aloft the marine inversion is expected to remain weak and there will likely be some clearing most afternoons. RH recoveries will be good as well with even the ridges seeing RH recoveries over 70 percent. Most of the ensemble solutions indicate there will be cooler than normal temperatures. This has mostly been supported by an onshore component to the low-level wind flow. Winds will become light southerly N of Cape Mendocino on Tuesday as low pressure moves S offshore.
Highs today will be about 4-5 degrees warmer than yesterday. On Wednesday, upper ridging will begin to build in from the west which will be the beginning of a persistent pattern for our area over the next several days.
These cooler temperatures will potentially last into late week along with generally dry weather conditions.
1212 AM CDT Tue Sep 13 2022 As high pressure continues to build over the region, calm winds and drier air will allow for temperatures to fall quickly overnight. Several ob sites have already fallen into the lower 60s, and dew points suggest there's a few more degrees of cooling potential left. And winds will be fairly light with the high pressure axis expected to be over a line from Shreveport to Tuscaloosa tomorrow afternoon. Should be another pleasant September day! /NF/ Tonight through Tuesday: A slow-moving upper level trough extending from the Great Lakes region through the lower Mississippi Valley region will support continued low level cool air advection over the forecast area through the near term.
This ridging will also keep the atmosphere a bit more capped today over the forecast area therefore the area should remain dry with any shower and thunderstorm activity staying in New Mexico where the better moisture and lift will be located. This activity will send some high level clouds into our region tonight which will keep overnight lows a touch warmer than the past few nights.
High pressure with dry and seasonable weather. As vort maxima rotate through the closed upper low across the Ohio Valley and Great Lakes, some mid to high level clouds will be possible across far northern East Tennessee and southwest Virginia; however, with the dry low-level and surface ridging, no precipitation is forecast. Temperatures will be near or slightly below normal today with troughing across the Eastern CONUS and surface ridging across the region. High pressure tonight will result in a clear sky and calm winds.
(Today and tonight) Expect warm and dry weather today across the area due to an upper level ridge. Highs today will be in the lower to mid 90s with lows tonight 65 to 70.
Forcing for ascent is being provided by convergence along a pre-frontal trough, but also through impressive mid-level divergence downstream of a closed mid-level low and increasing upper diffluence within the right entrance region of a poleward arcing and intensifying jet streak. Low clouds and fog are forecast to develop across the north and eastern parts of the CWA into early Tuesday morning as moisture lingers in the low levels.
The cutoff upper low over the Midwest and Great Lakes region will continue to push eastward through the near term period, eventually making its way over New England on Wednesday. Meanwhile, an upper ridge will build in behind this feature over the central CONUS and into the Deep South. At the surface, the cold front has finally pushed offshore this evening, with high pressure building in directly behind it. Expect this high pressure to remain in place over the region through midweek. Highs will then reach the lower to mid 80s on Tuesday, followed by another nice night with lows in the upper 50s to around 60 degrees inland and lower to mid 60s at the coast Tuesday night.
143 AM PDT Tue Sep 13 2022 Cooler temperatures will be the main story for this week. The cooler temperatures the past few days may seem like a brief reprieve after the long stretch of excessive triple digit heat. However, the cooler temperatures will only get cooler today and will remain cooler than average through the weekend. The cooler temperatures are due to a persistent linear onshore flow as well as multiple troughs including one on the weekend which is bringing in colder temperatures from the Pacific instead of the hot dry air from the desert southwest.
At the surface, high pressure will settle over the region today, resulting in continued dry conditions with light winds.
/13 The cutoff upper low over the Midwest and Great Lakes region will continue to push eastward through the near term period, eventually making its way over New England on Wednesday. Meanwhile, an upper ridge will build in behind this feature over the central CONUS and into the Deep South. At the surface, the cold front has finally pushed offshore this evening, with high pressure building in directly behind it. Expect this high pressure to remain in place over the region through midweek. Highs will then reach the lower to mid 80s on Tuesday, followed by another nice night with lows in the upper 50s to around 60 degrees inland and lower to mid 60s at the coast Tuesday night.
(Today) A much needed break in the rainfall continues to evolve over much of the region this early Tue morning, as high pressure out of the middle/southern Plains gradually builds to the east. An upper low/trough axis centered over the Great Lakes also continues to lift ENE closer to the middle/northern Atlantic states. Near seasonal temps are expected to climb mainly into the lower/mid 80s this afternoon, under mostly sunny skies.
(Today through Wednesday) This AM at the surface, ridging is taking hold over the Deep South behind our first front of the season to bring a tiny taste of fall/ cooler air into the area (at least for the night time temps. This ridge will remain in control for the duration of the short term with sunny weather expected. In the upper levels, NW flow will be present into AL now into early Wed as the upper low moves from OH NEWD into ME. The upper ridge will shift from the Rockies and build over Central Conus through the short term.
At the surface, south to southeasterly flow was bringing good recovery of temperatures following last night's weak cold front, with 1 pm temperatures in the upper 60s to low 70s being reported across most of West Central Texas. As we go into tonight, the southerly low level flow will continue, bringing increasing moisture and warmer than usual air. This, in addition to continued high clouds moving over our area, will result in warmer overnight lows tonight in the mid to upper 40s. This low will move east- southeast through the late afternoon across the TX/OK border, dragging a weak front across the Big Country and Concho Valley.
326 AM EST Thu Dec 5 2019 High pressure will meander overhead today. The high center will shift offshore on Friday, ahead of an approaching cold front.
1242 AM EST Thu Dec 5 2019 High pressure over the forecast area today and tonight will be off the Southeast Coast Friday. There will be increased moisture ahead of an approaching cold front Friday. High pressure moving into the forecast area will be centered in the area late today and this evening. Wind will be light with the center of the high in the region. Temperatures will be near normal for early December with highs in the lower to mid 60s and lows in the upper 30s to lower 40s. A weak upper-level trough slides across the region Friday for a slight chance of showers. High pressure builds in over the Northeast U.
Afternoon temperatures are a few degrees cooler today but the roller coaster of temps continue tomorrow as breezy west winds push highs back into the 70s for most locations. Increased winds across the region will be the result of a passing upper trough to the north. This trough will be far enough north that speeds will remain below Wind Advisory criteria for most areas however high winds (40mph sustained or greater) will likely develop in the Guadalupe and Delaware Mountains. Thursday night, in the wake of the departing upper trough, a dry cold front will move through the region knocking temperature back down into the 50s and 60s for Friday.
The trough axis, although weakening, will still be dragging a weak cold front with it that will likely fall apart before it can make its way across the area.