Aikyam-Lab/Synoptic-Bench huggingface dataset:
136 AM EDT Sat Aug 23 2025 - Limited rain chances still expected tonight and Sat - High confidence in much cooler temps and lake effect rain Sun-Tue - Moderating temps late week with rain chances - Limited rain chances still expected tonight and Sat Setup remains quite unfavorable for a widespread rain (much less soaking) for tonight and Saturday with the cold front moving through the area. - High confidence in much cooler temps and lake effect rain Sun-Tue After the leading upper short wave moves through late Saturday afternoon, we will see the upper cold pool and cyclonic flow aloft start to take control over the area.
- Tonight's cold frontal passage is expected to arrive with decaying showers/storms or dry conditions.
148 AM EDT Sat Aug 23 2025 High pressure will build across the area today.
- Cooler temperatures into midweek with highs in the 60s to low 70s.
Water vapor and upper-air analysis this morning shows an upper low and trough from Ontario south into the northern plains, with a surface front extending across the Great Lakes and Midwest. Conditions are currently quiet under clear skies with temperatures in the low to mid 60s. Today, the upper trough shifts east across the Great Lakes into the Ohio Valley, pushing a surface front into the region late this evening and overnight. High temperatures will likely be a few degrees warmer than yesterday given deeper mixing with highs in the upper 80s to near 90 degrees. Behind the front, deep troughing across the eastern CONUS will place the region in northwest flow aloft through midweek.
430 AM EDT Sat Aug 23 2025 - A cold front will bring a potential for showers and thunderstorms this afternoon with the greatest probability in southeast Kentucky.
A weak upper trough will maintain its hold on the weather pattern across the area through this weekend. Coverage will be less than previous days and generally confined to areas along and east of I-65, with the axis of the trough bisecting the region.
904 AM EDT Sat Aug 23 2025 - A cold front will bring a potential for showers and thunderstorms to most of the forecast area this weekend, with the greatest probability in southeast Kentucky.
What this means is that cooler air aloft will be over the northeast 2/3 of the area with enough 850 mb moisture for the development of CU outside of patches of stratocu moving thru.
What a difference a day makes, a pattern change will continue through the short term due to northwest flow aloft along with ridging to our south. All of what is mentioned above is a result of a stout upper level low that is slowly trekking easterly through Canada combined with high pressure locked in over the southwest. An upper-level ridge is stationed over the Four Corners Region and extends up to the north and west into the Pacific Northwest, leading to ongoing northwesterly flow overhead. A strong trough is present across southeastern Canada and is strengthening the jet from about Wyoming northeastward through North Dakota at 250mb Sunday.
636 AM CDT Sat Aug 23 2025 - Stellar late summer weekend as advertised thanks to the lower afternoon humidity with abundant sunshine.
658 AM EDT Sat Aug 23 2025 High pressure exits further out to sea today as a cold front nears the region, which will allow for a few showers or a thunderstorm by late this afternoon into this evening. The cold front will slowly cross our region tonight and Sunday, with additional showers and scattered thunderstorms.
Mean layer ridging remains in place across the Keys with the center of this ridge located over the western tip of Cuba to the Yucatan Channel.
This cloud cover has come in thicker than previously forecast and is aiding in keeping lows a bit warmer than yesterday morning. (Today through Sunday night) Today, mostly isolated to scattered thunderstorms are expected to move off the high terrain and into the northern zones of our CWA. PoPs are still not high for the day 1 period due to the low coverage of storms expected and our lower confidence in their sustainability.
724 AM EDT Sat Aug 23 2025 - A cold front will bring a potential for showers and thunderstorms this afternoon with the greatest probability in southeast Kentucky.
635 AM CDT Sat Aug 23 2025 A weak upper trough will maintain its hold on the weather pattern across the area through this weekend. Coverage will be less than previous days and generally confined to areas along and east of I-65, with the axis of the trough bisecting the region. A second trough will begin to dig southward and into the Great Lakes Regions later today, amplifying on Sunday and effectively absorbing the trough currently over the area. A cold front will slowly move southeastward and through the region Sunday night, with dry air filtering into the region in its wake.
The drier airmass will still allow for seasonably warm days through this weekend, but it will also make for pleasantly cooler mornings.
High pressure will build into the area, pushing the deeper moisture out of most of the day.
High pressure will continue to draw monsoon moisture north into Utah and southwest Wyoming through the middle of the upcoming week.
Satellite imagery early this morning reveals a strong ridge of high pressure across the Northern Rockies, with abnormally dry air in the low levels of the atmosphere. A warming trend remains on track this weekend, with temperatures reaching the low to mid 90s for western Montana valleys to low 100s for the lower valleys of north central Idaho. Heat advisories continue across the lower valleys of Idaho where hot daytime temperatures coupled with warm overnight temperatures will cause heat stress, especially to those who are sensitive to the heat. This heat will be compounded by wildfire smoke impacts as fires remain active in the Clearwater Mountains and easterly winds funnel smoke into the lower elevations during the overnight and morning hours through Sunday.
616 AM CDT Sat Aug 23 2025 - Drier and warmer for the upcoming weekend. Center of the upper level high remains well west of the area with northeast flow aloft over West Central Texas. This keeps temperatures from climbing much above normal with highs again in the low to mid 90s today.
The trough divides dew points in the lower to middle 70s from upper 60s further north and west.
725 AM EDT Sat Aug 23 2025 - Spotty coverage of showers today, isolated storms possible - Cooler temperatures expected with lake effect rain Sun-Tue - Moderating temperatures late week with less certain rain chances - Spotty coverage of showers today, isolated storms possible Latest QPF guidance shows even less precipitation expected today than before.
Temperatures fall into the upper 60s tonight, down from the low 90s today. Come Sunday morning, a mid-level trough begins to deepen and ushers in our much anticipated cold front. Best estimates suggests that this cold front will be south of Middle TN by Sunday evening. By Sunday night, temperatures will be noticeably cooler, in the low to mid 50s.
1030 AM EDT Sat Aug 23 2025 High pressure along the northeast coast continues to drift offshore through Saturday night.
610 AM CDT Sat Aug 23 2025 (Today through Sunday) A weak upper level trough is present over GA and the southern Appalachians today. However, as the trough continues to slide southeastward, we'll see a east to west moving frontal boundary move into eastern portions of the area. The main trough axis shifts to our east by Sunday, leading to slight subsidence.
Will continue to lean toward the high res guidance as they have been performing fairly well the past couple of days. Similar conditions are expected Sunday but with less mid-level energy as ridging begins to shift over the region.
Otherwise, expect a mix of clouds and sun for Sunday with highs in the low to mid 70s.
739 AM EDT Sat Aug 23 2025 (Today through Sunday) This weekend's weather will remain unsettled as a stalled frontal boundary remains across northern FL, with several areas of weak low pressure along the boundary. At the upper levels, there is a weak mid/upper level trough over the SE US which will get absorbed into the larger trough that will start to dig into the eastern US by late Sunday. High temperatures today and Sunday will be in the low to middle 90s.
An upper level low is located over western Ontario, with an upper level high over the Four Corners region. Subtropical moisture is being advected around the upper high, bringing a plume of moisture across the Rocky Mountains into the central Plains. At the surface, a cold front is tracking through the Sandhills this morning, with high pressure building in behind the front.
- Turning even cooler and less humid on Sunday. As the day goes on, an approaching cold front, moving from NW to SE, will start to impact the weather.
208 PM CDT Sat Aug 23 2025 Through Sunday night: In the wake of the recent cold front, dry weather is expected to continue this afternoon and tonight.
An unsettled pattern will persist across Deep South Texas and the Rio Grande Valley into the first part of the workweek as mid/upper level troughing continues. Diurnal instability will interact with the high moisture content in place increasing shower and thunderstorms activity midday through the early evening.
Meanwhile, our highly anticipated cold front is currently making its way across the Plains and Midwest today. Post-front, much drier and cooler air starts to filter into the area.
A broad upper-level trough will continue to pass over the CWA through into this evening which has lead to broken band of upper/mid- level clouds passing overhead throughout the day. HREF membership support up to a 20 percent chance of showers this evening in association with these clouds across central and northeastern MO and south-central/southwestern IL with a cold front sweeping through the area. However, the main impact of the cold front will be the subsequent cooler and drier airmass ushered by low-level northwesterly flow/CAA into the region with today's high temperatures in the 80s F cooling 25 to 30 F to the mid-50s to around 60 F by Sunday morning. Increasingly efficient radiational cooling upon arrival of the leading edge of a surface anticyclone will also aid in the cooling and possibly support patchy fog in northeastern and central MO.
212 PM EDT Sat Aug 23 2025 High pressure along the northeast coast continues to drift offshore tonight.
329 PM EDT Sat Aug 23 2025 - Here comes Fall! - Here comes Fall! Isolated showers and possibly a thunderstorm will attend the passage of a cold front across the southern and eastern zones late this afternoon and evening. The big story is still the trend towards much cooler temperatures as persistent upper troughing across eastern Canada and the NE CONUS over the next 10 days will mean a continued northwest flow of Canadian air masses, along with occasional chances for showers from cold front passages and lake/diurnal enhanced showers.
224 PM EDT Sat Aug 23 2025 High pressure will move off the New England coast through tonight, as a cold front approaches from the west.
High pressure arching over from the 4 corners region will continue to peak today with highs most likely between 104 and 108 in the hottest interior valleys this afternoon.
Center of the upper level high remains well west of the area with northeast flow aloft over West Central Texas. This keeps temperatures from climbing much above normal with highs again in the low to mid 90s today.
Due to mean layer ridging parking across the region our wind observations along the Reef are mainly variable and 5 knots or less.
A cold front bisecting the forecast area at this time will continue to track eastward this afternoon, exiting the southeast CWA by sunset.
1212 PM CDT Sat Aug 23 2025 A weak upper trough will maintain its hold on the weather pattern across the area through this weekend. Coverage will be less than previous days and generally confined to areas along and east of I-65, with the axis of the trough bisecting the region. A second trough will begin to dig southward and into the Great Lakes Regions later today, amplifying on Sunday and effectively absorbing the trough currently over the area. A cold front will slowly move southeastward and through the region Sunday night, with dry air filtering into the region in its wake.
241 PM EDT Sat Aug 23 2025 Isolated showers and storms are anticipated east of Pittsburgh today and tomorrow as a cold front approaches and passes through the region.
Otherwise, the forecast remains on track with slightly warmer than normal afternoon highs and dry weather today. The drier airmass will still allow for seasonably warm days through this weekend, but it will also make for pleasantly cooler mornings.
A large upper trof evolves over the central and eastern CONUS through Sunday, and in the process absorbs a weak upper trof over the forecast region.
With high pressure expected to persist through roughly mid-week, more widespread air quality issues may occur.
Monsoonal moisture continues to flow into Central California thanks to the ridge of high pressure that has set up over much of the Southwest U. Isolated to scattered thunderstorms are also passing over the higher elevations of the Sierra in much of Tulare County into Fresno County. Expect activity to continue to spread to the lower elevations this afternoon and into the evening.
145 PM CDT Sat Aug 23 2025 - Notably cooler and drier for the coming week.
323 PM EDT Sat Aug 23 2025 High pressure along the northeast coast continues to drift offshore tonight.
1225 PM EDT Sat Aug 23 2025 After a warm day today, a cold front will progress through the Ohio Valley tonight. A cold front will approach the Ohio Valley from the northwest this afternoon before eventually progressing through overnight. Forecast lows are in the lower to middle 60s. Cooler, drier air will be advecting into the Ohio Valley on breezy westerly flow through the day on Sunday following the passage of a cold front tonight/early this morning. Dew points will start out in the 60s for most locations and drop into the lower to middle 50s by the early evening. Winds relax after sunset and dry air allows temperatures to drop into the lower to middle 50s areawide.
230 PM EDT Sat Aug 23 2025 Shower chances increase through tonight west of the Blue Ridge Mountains as a cold front approaches.
Current Water Vapor and upper air models continue to show low pressure over eastern Ontario, with an upper high over the four corners region, and northwest flow over the central plains. Lee side of the upper high is advecting gulf moisture into the central and northern plains.
(This evening through Sunday) An upper level high, currently centered over the Four Corners area, will weaken slightly and shift a bit south over northeastern Arizona and northwestern New Mexico by Sunday evening. With a slight increase in 850mb temperatures, highs Sunday should be a degree or two warmer than today, reaching 94-96 degrees.
318 PM CDT Sat Aug 23 2025 - Cooler temperatures and showers will linger through Sunday night.
1114 AM EDT Sat Aug 23 2025 - A cold front will bring a potential for showers and thunderstorms to most of the forecast area this weekend, with the greatest probability in southeast Kentucky.
Issued by National Weather Service Wilmington OH 406 PM EDT Sat Aug 23 2025 - A cold front will bring a potential for showers and thunderstorms to most of the forecast area this weekend, with the greatest probability in southeast Kentucky.
The primary cold front moved through early this morning, and in its wake, northwest winds have mixed deeply in sunshine today, resulting in mild temperatures, and quickly dropping humidity levels. Lows tonight appear on target for lower to mid 50s, which should have many opening your windows and turning off the AC this evening! Sunday, a cooler day is in store, but well within the bounds of very nice weather for outdoor activities.
Made only a few minor tweaks to what we have going, as breezy winds and cooler temps remain in store for the afternoon. What this means is that cooler air aloft will be over the northeast 2/3 of the area with enough 850 mb moisture for the development of CU outside of patches of stratocu moving thru.
450 PM EDT Sat Aug 23 2025 High pressure along the northeast coast continues to drift offshore tonight.
Deepening northwest flow forecast through Sunday as the upper ridge shifts west and amplifies, and upper trough deepens over the Great Lakes/Northeast U.
1246 PM EDT Sat Aug 23 2025 Isolated showers and storms are anticipated east of Pittsburgh today and tomorrow as a cold front approaches and passes through the region.
- An isolated shower or thunderstorm is possible this afternoon and evening mainly in the higher elevations. High pressure will build into the area, pushing the deeper moisture out of most of the day.
202 PM CDT Sat Aug 23 2025 - A cold front may spark a few isolated storms through early this evening east of Interstate 55. Upper ridging remains anchored in the western US with troughing positioned over the Upper Midwest states. At the surface, a cold front is stretched from roughly Pontiac southwestward toward Quincy as of 2 pm. After the front moves through later this evening, cool and relatively dry conditions will settle in for the upcoming week as surface ridging overspreads the region.
Sunday will be another beautiful day though a bit cooler thanks to persistent weakly cold advective northwest flow aloft.
A deep upper low over Ontario, Canada will continue to drift across southeast Canada through much of the coming week. This will maintain a pronounced trough across the eastern CONUS leading to below normal temperatures for us. A frontal boundary moves through tonight, ushering in much drier and cooler air starting tomorrow and continuing through the week ahead. High pressure at the surface should largely prevent any rain during the early-mid week period.
(Today through Sunday night) Today, mostly isolated to scattered thunderstorms are expected to move off the high terrain and into the northern zones of our CWA. PoPs are still not high for the day 1 period due to the low coverage of storms expected and our lower confidence in their sustainability.
and temps to drop down to the low 60s to low 70s for lows this Sat morning. AR will remain on the ERN periphery of the upper ridge to the west. A new cold front will also drop south into the state with this transition in upper flow. The drier/cooler air will settle in. A cold front is expected to enter the state by tonight with a few light showers possible over far northern Arkansas.
122 PM EDT Sat Aug 23 2025 - Spotty coverage of showers today, isolated storms possible - Cooler temperatures expected with lake effect rain Sun-Tue - Moderating temperatures late week with less certain rain chances - Spotty coverage of showers today, isolated storms possible Latest QPF guidance shows even less precipitation expected today than before.
CU should also generally decrease in coverage, though with CAA and cyclonic flow in place around the mid/upper low to the northeast it is the type of pattern where new low clouds often redevelop overnight and there is a signal for this.
622 PM CDT Sat Aug 23 2025 - A cold front may spark a few isolated storms through early this evening east of Interstate 55. Upper ridging remains anchored in the western US with troughing positioned over the Upper Midwest states. At the surface, a cold front is stretched from roughly Pontiac southwestward toward Quincy as of 2 pm. After the front moves through later this evening, cool and relatively dry conditions will settle in for the upcoming week as surface ridging overspreads the region.
614 PM CDT Sat Aug 23 2025 An unsettled pattern will persist across Deep South Texas and the Rio Grande Valley into the first part of the workweek as mid/upper level troughing continues. Diurnal instability will interact with the high moisture content in place increasing shower and thunderstorms activity midday through the early evening.
341 PM MDT Sat Aug 23 2025 - Scattered showers and thunderstorms are expected throughout this afternoon, mostly along the high terrain Gusty winds, frequent lightning, and moderate to heavy rain are all possible. This CIN should continue to erode over the afternoon, though we should still see most storm development remain along the high terrain. High pressure remains in place for much of the week ahead, as does monsoonal moisture. This weather pattern supports a cooler, wetter week with daily precipitation chances and below normal temperatures.
553 PM MDT Sat Aug 23 2025 - Scattered showers and thunderstorms are expected throughout this afternoon, mostly along the high terrain Gusty winds, frequent lightning, and moderate to heavy rain are all possible. This CIN should continue to erode over the afternoon, though we should still see most storm development remain along the high terrain. High pressure remains in place for much of the week ahead, as does monsoonal moisture. This weather pattern supports a cooler, wetter week with daily precipitation chances and below normal temperatures.
- Rain chances and cooler weather are forecast to continue through most of the upcoming week. on the eastern periphery of a stalled upper level ridge (centered over the Desert Southwest, extending NNW to the Pacific Northwest) and southwestern periphery of a stalled upper low (centered over Ontario, with an associated trough extending southward through the Great Lakes). Sun-Sun night: 12Z operational guidance suggests that low-level easterly /upslope/ flow on the northern periphery of a modest lee cyclone (prognosticated to develop over southeast Colorado) may facilitate convective development along portions of the Palmer Divide Sunday afternoon and, ultimately, portions of western Kansas during the late aft-eve and overnight hours.
741 PM EDT Sat Aug 23 2025 High pressure along the northeast coast continues to drift offshore tonight.
649 PM CDT Sat Aug 23 2025 Through Sunday night: In the wake of the recent cold front, dry weather is expected to continue this afternoon and tonight.
824 PM EDT Sat Aug 23 2025 A narrow ridge of high pressure will continue to extend across the Carolinas through Sunday, while an area of low pressure will develop and track off the coast.
Our incoming cold front is currently in Missouri, and this will arrive tomorrow, bringing that cooler and noticeably drier air. Meanwhile, our highly anticipated cold front is currently making its way across the Plains and Midwest today. Post-front, much drier and cooler air starts to filter into the area.
633 PM CDT Sat Aug 23 2025 - Cooler temperatures and showers will linger through Sunday night.
526 PM EDT Sat Aug 23 2025 Isolated showers and storms are anticipated east of Pittsburgh today and tomorrow as a cold front approaches and passes through the region.
Issued by National Weather Service Wilmington OH 755 PM EDT Sat Aug 23 2025 - A cold front will bring a potential for showers and thunderstorms to most of the forecast area this weekend, with the greatest probability in southeast Kentucky.
807 PM CDT Sat Aug 23 2025 A large upper trof evolves over the central and eastern CONUS through Sunday, and in the process absorbs a weak upper trof over the forecast region.
757 PM EDT Sat Aug 23 2025 - Here comes Fall! - Here comes Fall! Isolated showers and possibly a thunderstorm will attend the passage of a cold front across the southern and eastern zones late this afternoon and evening. The big story is still the trend towards much cooler temperatures as persistent upper troughing across eastern Canada and the NE CONUS over the next 10 days will mean a continued northwest flow of Canadian air masses, along with occasional chances for showers from cold front passages and lake/diurnal enhanced showers.
Things quiet for midweek with low amplitude ridging.
- Widespread precipitation and much cooler temperatures are expected to linger through the end of the coming week. This means the potential for heavy rain producers, especially with the slow storm motion under the high. Temperatures will run cooler today, close to normal for late August.
High pressure will generally continue to persist over the are Sunday, but midlevel moisture and high clouds streaming over the area will provide just enough coverage to slightly cool interior conditions into the upper 90s.