Aikyam-Lab/Synoptic-Bench huggingface dataset:
733 AM EDT Fri Aug 29 2025 A slow-moving upper level low and associated cold front will bring beneficial rainfall to the North Country today. The upper low will linger across southern Quebec, bringing mostly cloudy and cool conditions for Saturday.
639 AM EDT Fri Aug 29 2025 A cold front currently moving west to east across the area will continue bringing light rain showers through this morning, with cooler air moving in through the day. High pressure with dry and progressively milder weather is expected for the upcoming weekend. Currently, a cold front sweeps across our area, bringing light rain showers on radar. Well below average temperatures expected for today after the passage of the cold front. High temperatures are only expected to reach into the low to high 60s, with some higher elevations only in the high 50s, and NE PA valleys in the low 70s.
257 PM EDT Fri Aug 29 2025 A weak cold front will move south across the mid-Atlantic Saturday, and then stall out and hold across South Carolina over the rest of the weekend, as high pressure noses in from the north. Wnwly flow aloft continues this afternoon with dew points mixing out a bit into the lower 50s. Further upstream, a sfc cold front was draped west to east from IL through northern VA/Delmarva. Associated mid to high level cloudiness will spread across the area tonight, keeping overnight lows a bit warmer in the lower 60s. The backdoor sfc cold front will slide south of our area through Saturday morning, stalling in the SC vicinity as strong high pressure builds into the mid-Altantic. Overnight lows will dip into the lower to mid 60s.
244 PM EDT Fri Aug 29 2025 Upper level low pressure will drop south from Quebec tonight then slowly cross the region this weekend.
The remainder of the forecast today calls for cloudy and cooler conditions to remain, as yesterday's stalled front has shifted just south of the region. However, those locations will only top out in the low to mid 80s.
- Small shower/storm chances can be expected with an upper trof's passage during the middle of the week. That said, the models do pick up on H5 height falls that occur in conjunction with the development of an almost opened up wave of low pressure aloft, embedded within the mean upper trof that pounds its way further thru the South, even to the Gulf coastal region.
The interaction of the ridge pattern with a disturbance off the Pacific Northwest Coast has allowed for the eastward push of monsoonal out of Central California. In addition, the flatness of the ridge pattern will keep temperatures at near normal values. The ridge pattern is expected to win out and rebuild over the Labor Day weekend and the heat returns.
- Cooler temperatures continue. (Rest of today and tonight) With the center of a mid-level ridge positioned over far southern New Mexico and far West Texas, Oklahoma and western north Texas will remain in west to northwest flow aloft.
The weak cold front is sagging through eastern Kentucky early this afternoon and a robust cumulus field is developing across most of the area. Latest surface analysis suggests that the cold front is now roughly along the I-64 corridor. Scattered low clouds have been developing over central and northern Kentucky ahead of a cold front moving southeast into eastern Kentucky this morning. A cold front will slowly move south across the forecast area this afternoon into the early evening on the south side of a mid-level jet streak rounding the base of a mid-level cut-off low centered over far southeastern Canada. After highs today in the upper 70s to mid-80s, temperatures will only cool off a degree or two for Saturday, as the better push of cooler air behind the front gets ushered quickly into the Mid- Atlantic and Northeast.
116 PM PDT Fri Aug 29 2025 High pressure will begin to build into the Pacific Northwest today.
Although higher probabilities for shower and storms will remain across the high plains of western Kansas, some low pops were maintained in our far western counties where a rogue shower or two may approach toward morning on Saturday.
High pressure will then gradually settle across the region through the long holiday weekend. On Saturday the upper level low will make its way east to New England. while high pressure and drier air continues to build into our region from the central Great Lakes. with some airmass modification allowing for somewhat warmer highs ranging from the lower 60s across the higher terrain to the mid and upper 60s across most of the lower elevations.
Radar trends have since waned, with only isolated showers and thunderstorms now present in the Gulf waters north of the Lower Keys. Surface synoptic analysis places a quasistationary front draped across Northern Florida, and a weak area of high pressure extending across the North Atlantic, with its axis somewhere near the Florida Space Coast. Water vapor imagery depicts a longwave trough encompassing the entire Eastern Seaboard. The lack of ridging, coupled with the deep moisture, and the fact it is nearing our annual convective maximum all supports well above normal rain and thunder chances today. From synopsis, an early season Canadian high pressure system will continue to traverse across the eastern United States and move into the Atlantic over the next few days.
(Tonight) High pressure persisting over the Ohio River Valley will promote clear and calm conditions across the Tennessee Valley once again tonight. As a result, temperatures to dip into the upper 50s into the low 60s tonight.
1214 PM EDT Fri Aug 29 2025 A moisture starved weak cold front passes through today.
Currently, troughing resides over the eastern third of CONUS, while two cutoff areas of low pressure are out in the Pacific Ocean, pushing the main jet/flow well to the north of much of the western/central CONUS into an omega block like pattern.
(Rest of Today and Tonight) High pressure at the surface promoting tranquil conditions across the Tennessee Valley, with a clear sky and calm winds.
A backdoor cold front is pushing west through portions of west and south-central Illinois before stalling near the Mississippi River overnight. This area will fall into the low-50s with areas to the west remaining in the upper 50s to 60 degrees. The cool start to the morning will cause high temperatures to lag behind as well, with south-central Illinois climbing into the low 80s opposed to the mid to upper 80s forecast south of I-70.
- Warmer and drier conditions develop this weekend with some terrain based showers in the forecast.
Temperatures will be near normal across south-central AZ and slightly below in SE CA and SW AZ, however, they will be several degrees warmer than yesterday across western portions of the CWA. This weekend the subtropical ridge will build over the desert SW, with heights aloft increasing to around 591 dm (up from 588 dm this morning). Afternoon high temperatures are forecasted to climb above normal this weekend (in the 105-110 degree range across the lower deserts). This increase in temperature will also cause our HeatRisk to increase into the moderate category across the lower deserts.
(This evening through Saturday night) Current upper level analysis shows a closed low centered north of Maine with broad troughing eastern third/half of the country and ridge centered south of West Texas.
134 PM EDT Fri Aug 29 2025 A cold front currently moving west to east across the area will continue bringing light rain showers through this morning, with cooler air moving in through the day. High pressure with dry and progressively milder weather is expected for the upcoming weekend. Currently, a cold front sweeps across our area, bringing light rain showers on radar. Well below average temperatures expected for today after the passage of the cold front. High temperatures are only expected to reach into the low to high 60s, with some higher elevations only in the high 50s, and NE PA valleys in the low 70s.
(This evening through Saturday) A weak cold front has drifted a bit farther south early this afternoon and as of 2 PM is situated across northern portions of the Concho Valley and Heartland. Additional convection is possible primarily across the Big country after midnight, as some of the Hi-Res models show convection developing across the higher terrain of eastern New Mexico and the western Texas Panhandle this evening, and eventually making a run for the Big Country after midnight. As for temperatures, expect lows in the lower 70s tonight, with highs on Saturday ranging from the 80s across the Big Country, to the low to mid 90s farther south.
1247 PM EDT Fri Aug 29 2025 A moisture starved weak cold front passes through today.
Outside of that, temps continue to run below normal with most values currently in the low to mid 80s. Look for mostly clear and cooler conditions tonight with lows mostly in the low to mid 50s.
High pressure will build over the Southwest this weekend, bringing hotter and drier conditions to the area.
1259 PM CDT Fri Aug 29 2025 - Cooler today with temperatures across the Big Country in the mid 80s to mid 90s, elsewhere in the mid to upper 90s. - Rain chances will increase across the area Friday into the weekend, along with cooler temperatures. (Today and Tonight) A cold front will continue to track through the portions of the Conch Valley and Heartland this morning, with lingering isolated showers and thunderstorms developing along the front as it tracks southward.
1224 PM CDT Fri Aug 29 2025 (Rest of Today and Tonight) High pressure at the surface promoting tranquil conditions across the Tennessee Valley, with a clear sky and calm winds.
The upper level pattern has the upper high currently centered over southeast New Mexico/southwest Texas.
700 PM CDT Fri Aug 29 2025 (Tonight) High pressure persisting over the Ohio River Valley will promote clear and calm conditions across the Tennessee Valley once again tonight. As a result, temperatures to dip into the upper 50s into the low 60s tonight.
705 PM EDT Fri Aug 29 2025 A weak cold front will move south across the mid-Atlantic Saturday, and then stall out and hold across South Carolina over the rest of the weekend, as high pressure noses in from the north. Wnwly flow aloft continues this afternoon with dew points mixing out a bit into the lower 50s. Further upstream, a sfc cold front was draped west to east from IL through northern VA/Delmarva. Associated mid to high level cloudiness will spread across the area tonight, keeping overnight lows a bit warmer in the lower 60s. The backdoor sfc cold front will slide south of our area through Saturday morning, stalling in the SC vicinity as strong high pressure builds into the mid-Altantic. Overnight lows will dip into the lower to mid 60s.
Low pressure that is continuing to slide northeastward off the Atlantic Coast this evening is keeping a poorly defined pressure field across the Keys this evening. Temperatures will generally range in the lower 80s with dew points in the mid to upper 70s.
Also, an upper ridge over our area will be stronger Saturday, so several degrees warmer than today.
723 PM CDT Fri Aug 29 2025 (This evening through Saturday night) Current upper level analysis shows a closed low centered north of Maine with broad troughing eastern third/half of the country and ridge centered south of West Texas.
Upper level ridging will shift eastward by this evening. An upper level low off the coast will influence the area this weekend keeping temperatures seasonable.
737 PM EDT Fri Aug 29 2025 Upper level low pressure will drop south from Quebec tonight then slowly cross the region this weekend.
Patchy fog, some possibly dense may develop along our Interstate 20 corridor with the highest probabilities of dense fog development expected over our east central Mississippi zones.
High pressure will begin to build into the Pacific Northwest today.
1227 AM CDT Sat Aug 30 2025 The main concern this holiday weekend continues to be heat, as subsidence under a mid-level high pressure over West Texas with low- level moisture brought by south-southeasterly winds brings heat indices into the triple digits each day through Labor Day. Heat indices from 105-111 are possible across the region, with the highest values expected in the mid-upper RGV and along US-77. Mid-level ridging will maintain low rain chances today. As this ridge shifts west, deeper layer moisture builds, bringing PWAT values around 2".
(Today through Sunday) Upper troughing and ridging has shifted a few degrees eastward from the last few days with an upper low over the St. Lawrence River Valley, and the base of the trough near the Georgia coast. Ridging was from Texas through the northern Plains. For Labor Day, highs should be a few degrees warmer, especially north of Interstate 10.
Outside of that, temps continue to run below normal with most values currently in the low to mid 80s. Look for mostly clear and cooler conditions tonight with lows mostly in the low to mid 50s. Look for continued chilly nights mostly in the low to mid 50s, along with slightly below normal highs mostly in the low and mid 80s for Sunday.
239 AM EDT Sat Aug 30 2025 High pressure will build into the region through the holiday weekend, providing day-to-day warming and fair dry weather into the start of the new work week. Temperatures early this morning range from the low 40s to near 50. Dry weather with partly to mostly sunny skies is expected as high pressure builds into the region. The best chance for more clouds is expected east of Lake Ontario where the closer proximity to the departing trough will increase the cloud cover some.
302 AM EDT Sat Aug 30 2025 - A bit warmer today with highs in the mid 70s.
152 AM EDT Sat Aug 30 2025 High pressure gradually building over the region will bring fair and pleasant weather through the Labor Day Holiday Weekend.
233 AM EDT Sat Aug 30 2025 An upper level low will slowly cross the region through tonight.
The upper trough remains over the eastern CONUS, keeping northwest flow over the CWA with high pressure at the surface extending from the Great Lakes. Tonight, northwest flow will likely carry in extra cloud cover from upstream precipitation, but skies are expected to remain mostly clear over the Lower Ohio Valley.
Large scale high pressure is centered over the Great Basin this morning and will gradually shift eastward over the coming days.
A rather broad upper trough will persist over the eastern US through the weekend slowly pushing a surface cold front through the area. The one good thing with the active pattern is a continued period of cooler temperatures with mostly highs in the 80s through most of the week. Once the drier air moves in midweek, we will likely see those low temperatures drop back off into the low to mid 60s.
Otherwise, a persistent and unseasonably strong eastern CONUS longwave trough will be the primary weather influence for the area as we go from the weekend through the upcoming work week. This trough would back low level flow to more southerly and provide more substantial lift to bring greater shower chances. By late week, strong reinforcement of the eastern CONUS trough will provide a seasonably strong surge of cooler air into the region.
* A high pressure ridge will move into the region this weekend.
- Turning drier and a little warmer for Labor Day weekend.
This afternoon through Sunday morning is still expected to feature the highest rain chances for much of the area, particularly the Permian Basin. At this time, we have put the highest rain chances (50-80%) from the Davis Mountains up through the central and northern Permian Basin, which more or less aligns with model guidance from the HRRR and HREF.
227 AM EDT Sat Aug 30 2025 High pressure and an eastern Conus trough will keep us below normal on temperatures through the weekend, though moisture will start increasing as the flow turns to the east.
There is a noticeable moisture gradient across the area with dewpoints in the upper 50s to lower 60s across the northern half of the area and in the lower 70s across the southern half of the area where some patchy fog may develop through the pre-dawn hours. It will be one of the warmer days we've had all week, and temperatures will range from near 90F west to near 80F east.
(Today and tonight) Ongoing convection across the higher terrain of eastern New Mexico and the western Texas Panhandle this evening, has started to progress east-southeastward toward West Central Texas this morning.
105 AM MDT Sat Aug 30 2025 - Mostly dry weather and gradually warmer temps for Labor Day weekend. Upper level ridge over western Idaho will slide through central Idaho. Models are picking up on some moisture that will try to work over the top of the ridge. Some of the models are indicating a few isolated light rain showers developing this afternoon in the higher terrain of western Custer County.
(Today and Tonight) A weak cold front has drifted a bit farther south early this afternoon and as of 2 PM is situated across northern portions of the Concho Valley and Heartland. Additional convection is possible primarily across the Big country after midnight, as some of the Hi-Res models show convection developing across the higher terrain of eastern New Mexico and the western Texas Panhandle this evening, and eventually making a run for the Big Country after midnight. As for temperatures, expect lows in the lower 70s tonight, with highs on Saturday ranging from the 80s across the Big Country, to the low to mid 90s farther south.
The main weak upper circulations still look at this point that they will remain south and west of our CWA today into tomorrow, with blocking ridge to our northeast.
WV imagery indicates extremely weak ridging aloft situated across the Western High Plains. Near the surface, a weak area of low pressure is edging east through northwest Kansas with an attendant frontal boundary extending south-southwest into extreme southeast Colorado. Although little change to the general air mass is expected Sunday under the influence of weak north-northeasterlies, decreased cloud cover may allow a slight bump up in temperatures with highs in the mid/upper 70s(F) in central Kansas to the lower 80s(F) in extreme southwest Kansas.
Satellite imagery shows a combination of low and high clouds over the area this evening with the low clouds along the coast and near the Strait of Juan de Fuca and the high clouds over the interior. Upper level ridging will shift eastward by this evening. An upper level low off the coast will influence the area this weekend keeping temperatures seasonable.
- The work week starts a little wet, mainly east of I-49 as the winds shift to NW with more high pressure drying out midweek. Our temperatures will be below average and perhaps warmer east of I-49 this weekend with some intermittent sunshine under partly cloudy skies.
(Today through Sunday) A prolonged period of unsettled weather is fast approaching for South Florida as deep upper level troughing sets up over the Eastern Seaboard. The trough axis is forecast to extend southward along the Florida peninsula, while a corresponding quasi- stationary surface boundary is expected to set up across northern Florida today, supporting sustained enhanced moisture advection from the Gulf as westerly flow develops.
- Warmer and drier conditions return Sunday and beyond with near normal temperatures and some isolated afternoon mountain showers and thunderstorms. A weak trough swinging across Wyoming this morning is dragging enough energy through the northern half of the CWA to keep some cloud cover on the western shoulders of the Continental Divide. Dry air filtering in behind the trough and some morning sunshine will quickly chew anything up. Warmer and drier conditions return Sunday, with temperatures hovering around the normal mark along with abundant sunshine.
650 AM EDT Sat Aug 30 2025 - A bit warmer today with highs in the mid 70s.
644 AM EDT Sat Aug 30 2025 High pressure gradually building over the region will bring fair and pleasant weather through the Labor Day Holiday Weekend.
As the low continues to slowly track east across the region rainfall will continue to wrap around the low.
WV imagery indicates extremely weak ridging aloft situated across the Western High Plains. Near the surface, a weak area of low pressure is edging east through northwest Kansas with an attendant frontal boundary extending south-southwest into extreme southeast Colorado. Although little change to the general air mass is expected Sunday under the influence of weak north-northeasterlies, decreased cloud cover may allow a slight bump up in temperatures with highs in the mid/upper 70s(F) in central Kansas to the lower 80s(F) in extreme southwest Kansas. Otherwise the lower cloud cover will erode west to east and bring reprieve to the lowered flight conditions by around the midpoint of the TAF period.
513 AM EDT Sat Aug 30 2025 High pressure will build into the region through the holiday weekend, providing day-to-day warming and fair dry weather into the start of the new work week. Temperatures early this morning range from the low 40s to near 50. Dry weather with partly to mostly sunny skies is expected as high pressure builds into the region. The best chance for more clouds is expected east of Lake Ontario where the closer proximity to the departing trough will increase the cloud cover some.
710 AM EDT Sat Aug 30 2025 (Today through Sunday) A prolonged period of unsettled weather is fast approaching for South Florida as deep upper level troughing sets up over the Eastern Seaboard. The trough axis is forecast to extend southward along the Florida peninsula, while a corresponding quasi- stationary surface boundary is expected to set up across northern Florida today, supporting sustained enhanced moisture advection from the Gulf as westerly flow develops.
620 AM CDT Sat Aug 30 2025 The main concern this holiday weekend continues to be heat, as subsidence under a mid-level high pressure over West Texas with low- level moisture brought by south-southeasterly winds brings heat indices into the triple digits each day through Labor Day. Heat indices from 105-111 are possible across the region, with the highest values expected in the mid-upper RGV and along US-77. Mid-level ridging will maintain low rain chances today. As this ridge shifts west, deeper layer moisture builds, bringing PWAT values around 2".
401 AM MDT Sat Aug 30 2025 - Mostly dry weather and gradually warmer temps for Labor Day weekend. Upper level ridge over western Idaho will slide through central Idaho. Models are picking up on some moisture that will try to work over the top of the ridge. Some of the models are indicating a few isolated light rain showers developing this afternoon in the higher terrain of western Custer County.
635 AM EDT Sat Aug 30 2025 High pressure and an eastern Conus trough will keep us below normal on temperatures through the weekend, though moisture will start increasing as the flow turns to the east.
Today, winds in the low to mid levels take a northerly turn, pushing moisture south and out of much of southeastern Arizona.
- Fall-like air mass settles in for the middle/end of the week, with high temperatures not making it out of the 60s and low temperatures dropping into the 40s - a few areas in northern Iowa may even drop into the upper 30s! Weakly sheared pattern dominates much of the CONUS, with one ridge of high pressure drifting southeast from the Canadian Prairie Provinces towards the Great Lakes; while a second is entrenched across the western U.
- Meteorological Overview: Upper level ridge will build in over the Northern Rockies through the first half of the upcoming work week, which will allow temperatures to warm above normal across all locations. Winds will be light and variable beneath the ridging pattern with overall dry conditions.
1246 PM CDT Sat Aug 30 2025 (Rest of Today and Tonight) Tranquil weather across the Tennessee Valley again today with high pressure in control of our sensible weather. Model soundings show a very dry profile indicative of strong subsidence from the ridge. Despite northwesterly flow aloft reinforcing this "cooler" and drier air mass, ample sunshine should warm highs into the 85 to 90 degree range.
141 PM EDT Sat Aug 30 2025 - A bit warmer today with highs in the mid 70s.