Aikyam-Lab/Synoptic-Bench huggingface dataset:
- A cold front will impact the area later this week, dropping temperatures a few degrees. More of the same for Monday in terms of temperatures, although slightly warmer across easter Wyoming and the Nebraska Panhandle where temperatures may soar to near 90 in a few spots. Mid-level water vapor shows the next low pressure system of the coast of California/Oregon now. Cluster analysis show majority of the ensembles stalling the system as it collides with the ridging pattern to give us a wet work week.
Temperatures will be in the low 80s and upper 70s for most of the CWA which is 3-5 degrees below normal for this time of year. Pressure gradient remains compact over the SE on the back edge of the recent cold front, keeping winds up. Though some areas of NW Georgia could see locally higher gusts, especially along the peaks and ridges.
1218 AM CDT Mon Sep 8 2025 An upper trof over the eastern CONUS weakens through Monday then is rejuvenated through midweek by a system which advances from the Plains.
1208 AM CDT Mon Sep 8 2025 - Warmer week ahead! Highs return to the 70s for most, pushing to around 80 for the end of the week.
/NEW/ /Through Tuesday Night/ A relatively dry airmass will be in place across North and Central Texas through Tuesday thanks to a large area of high pressure situated across The Great Lakes. Given the clockwise circulation around the high, our winds across North and Central Texas will remain out of the east/southeast, generally below 10 mph. By Tuesday morning, cooler conditions can be expected with temperatures ranging from the mid 50s to around 62 degrees. Slightly warmer temperatures are expected on Tuesday as our airmass begins to modify in response to increasing mid-level heights.
High pressure is now drifting east through the Great Lakes early today. This large high pressure continues to bring dry air and clear skies to the region, with temperatures at 2 AM falling to the lower to mid 40s throughout our CWA. Cloud cover does look more likely Tuesday, especially north, resulting in highs a bit cooler than today, in the lower 70s, while southern areas return to the mid and upper 70s once again.
Temperatures are again expected to top out in the low to mid 80s for most locations this afternoon. Otherwise, clearing skies and dry conditions will lead to another nice day on Tuesday as highs remain steady in the low to mid 80s. Moving into the middle and latter parts of the week, mid level ridging is expected to take over the Plains and warming temperatures are forecast into weekend.
Diurnally driven stratocumulus clouds will dissipate after sunset, providing for mostly clear skies and light winds as a ridge of high pressure tracks through the western Great Lakes region. Strong warm air advection will commence on Monday as the high pushes off to the east and surface winds turn to a southerly direction. A cold front will slowly track through the region from Monday night through Tuesday night, which will bring showers and thunderstorms to the region.
High pressure centered over the region maintains generally dry and stable conditions this period. * None Upper trough axis passes overhead this afternoon with subsidence beginning to further dry and warm the mid-levels. Loss of daytime heating will cause skies to clear and a cold night is in store as a 850mb thermal trough sits overhead at around 4C, or below the 10th percentile for the date. Based on dew points, temps should have no problem falling to the lower 40s by Monday morning. Given the chilly start and thermal trough holding in place, Monday temps only look to rebound to around 70 degrees for a high despite nearly full sun.
207 AM EDT Mon Sep 8 2025 High pressure becoming locked in across the region will ensure a prolonged period of dry conditions, spanning at least the next six days.
While higher precipitation chances remain along and west of the local forecast area through today due to contention between the forcing synoptic wave and the aforementioned high pressure (LREF confidence in 579dam heights at 500mb), a meager east shift in the pattern does graze limited precipitation chances along northwestern peripheral counties in southeast Minnesota overnight.
Currently at the surface, a weak area of low pressure is spinning over the eastern Gulf, with south and southwest low level flow continuing to pump tropical moisture into the Florida Peninsula.
1226 AM EDT Mon Sep 8 2025 High pressure will shift slowly east across the region this week, resulting in dry conditions and a gradual warming trend.
As the upper ridge over the Desert Southwest shifts towards the Plains, we have transitioned into a more northwesterly flow. Surface observations also show higher dewpoints across western Kansas with dewpoints in the lower 60s. Locations in central and eastern Kansas are currently seeing dewpoints in the lower to middle 50s. As we move through the week, the ridge to our west will continue to build back over the region. This will support the gradual warming trend with highs in the lower 80s for Tuesday and temperatures nearing normal through the end of the week and into the weekend with highs in the middle to upper 80s.
Cooler air retreats east today with a ridge building to the west. Heading into Monday, moisture and warmer temperatures return to the area, with afternoon highs in the 70s to near 80 degrees. Heading into Tuesday afternoon, the H5 ridge works slowly eastward, with the axis centered in western North Dakota.
Center of midlevel high pressure will push across portions of northern Lower Michigan today resulting in strongly anticyclonic and isentropic downglide trajectories today.
204 AM EDT Mon Sep 8 2025 A prolonged period of mostly dry weather is expected as high pressure dominates. In the microclimate of the Canaan Valley, lows will be below freezing in some spots.
Longwave troughing over the Great Lakes region is beginning to lift away to the northeast. As it departs, a weak, residual upper trough is expected to linger across the southeast US through the week.
High pressure is nudging eastward across eastern Iowa at this hour, shifting toward the Chicago area by this evening. Meanwhile, ridging aloft nudges eastward out of the Rockies and into the Plains in response to a deep trough nudging inland from the West Coast. The only significant moisture to speak of is flowing northward over the western High Plains and will limit the rain potential with this trough to areas to our west and north. Tuesday's trough pushes eastward through the Great Lakes into the Northeast while upper ridging moves in sharply behind it over the Upper Midwest. With the cool air mass tracking eastward rather than southward and the ridge incoming, we'll just see daytime temperatures continue to warm through the week.
Monday will feature the start of warmer temperatures that will then settle in through the remainder of the period. Highs will still be below normal (around 70) Monday, but rapidly trend above normal in the low to mid 80s by mid week and linger in that range through the upcoming weekend. A series of troughs will help keep the much warmer temperatures confined west of the region, but the chances for precip that would normally accompany them are unlikely to occur as deeper moisture remains cutoff to the west or down along the Gulf states. High pressure also helps to keep the gradient down and limit wind speed and gusts.
A weak cold front across the northern ranchlands this evening will continue to drift slowly southward and linger across the CWA Monday into Tuesday. A low to medium (20 to 60 percent) chance of rain will continue along the Lower Texas Coast and over the Gulf waters through the period.
Pattern Synopsis and Forecast: Trough axis shifts to the east tonight with precipitation chances waning. That being said, when looking at some pieces of guidance/probs (NBM, internal probs) and the positioning of the high pressure system tonight, there could be a pocket of ~32-36F temps Crawford county southward.
- Meteorological Overview: A trough building along the Pacific coast will slowly translate east throughout the week and weekend.
130 AM EDT Mon Sep 8 2025 High pressure will remain in control of our weather through most of the week. High pressure will settle into the forecast area today with seasonable temperatures, fair weather (except for some occasional BKN diurnal CU), and a light northwest flow. Conditions look favorable for out better radiators in northern NH and northern Oxford County ME to get down into the lower to mid 30s tonight. Fair weather continues Tuesday with high pressure holding on. Key Message: Large areas of high pressure dominate the weather and lead to largely dry conditions for the area. Forecast Details: High pressure center drifts east thru Tue but remains in control of the area. with reinforcing high pressure building southeast for the remainder of the week.
(Today) Water vapor imagery shows the upper level trough entrenched across much of the Southeast this morning. This will make for another beautiful early September day with highs this afternoon topping out in the lower 80s with a few upper 70s in the higher terrain. Dewpoints in the lower 50s makes for a very comfortable afternoon.
613 AM EDT Mon Sep 8 2025 High pressure maintains control through much of the week, yielding a stretch of dry weather amid gradually warming temperatures. High pressure in control at the surface will sustain quiet weather across the forecast area both today and tonight. Temperatures should remain a few degrees shy of normal with highs in the 60s for the higher elevations of the northeast mountains and 70s for the rest of the forecast area. During this time, temperatures gradually moderate towards normal with highs likely returning to mid 60s to 70s for the higher terrain and upper 70s to mid 80s within the lowlands.
746 AM EDT Mon Sep 8 2025 A prolonged period of mostly dry weather is expected as high pressure dominates. In the microclimate of the Canaan Valley, lows will be below freezing in some spots.
830 AM EDT Mon Sep 8 2025 High pressure will provide dry conditions through much of the week. An upper level trough continues to pivot through the area, but is only amounting to high based clouds with shallow moisture at about the 700mb level with very dry conditions above and below. Below normal temperatures persist, however, with highs in the lower to mid 70s.
Fall-like weather is expected to set in midweek with breezy and cooler weather and a slight chance for showers and thunderstorms. A trough pushing into the Pacific Northwest today will move into the Great Basin by midweek. The flow ahead of the gradually deepening trough will be more westerly in the mid levels allowing for a slight warming to occur for today and Tuesday. The trough digs down into the region, bringing increasing winds and cooler weather. This fall-like weather will hang around through the end of the week so be prepared for those cooler nights.
Although the ridging will be in place, there appears to marginally sufficient instability to result in a few afternoon and evening showers and thunderstorms, primarily across North-central Montana, but into portions of Central Montana as well. -AM /Issued Issued by National Weather Service Missoula MT/ - Meteorological Overview: A trough building along the Pacific coast will slowly translate east throughout the week and weekend.
(Today and tonight) A weak cold front is forecast to continue to slowly push southeastward through the area today before eventually stalling out offshore. Troughing over the eastern CONUS along with some deep layer moisture and proximity to the front today will still allow for some scattered showers and storms across the southeastern half of the area this afternoon. Highs today are forecast in the mid 80s to low 90s with max heat indices only a few degrees warmer.
729 AM EDT Mon Sep 8 2025 Drier and cooler weather will prevail for much of the week as high pressure becomes well established across the region. While most areas should see them bottom out in the forties and upper thirties, parts of the Adirondacks and Northeast Kingdom will see them fall into the low to mid thirties.
1047 AM EDT Mon Sep 8 2025 High pressure building in from the north will bring cooler and drier weather to the area for the first half of the week. Key Message(s): - Cooler and drier air slowly moving into the area. High pressure continues to build into the area today with persistent northeasterly flow. Temperatures will be much cooler today with highs expected in the upper 70s to lower 80s.
241 AM PDT Mon Sep 8 2025 A low pressure system will gradually bring cooler weather this week and temperatures will be mostly below normal. A low pressure trough, rather deep and amplified for this time of year, hangs off the Pacific NW coast.
Still just enough moisture for slight chances of showers and thunderstorms each day, generally in the higher terrain and to the south and east of Tucson.
/Issued Issued by National Weather Service Missoula MT/ - Meteorological Overview: A trough building along the Pacific coast will slowly translate east throughout the week and weekend.
621 AM CDT Mon Sep 8 2025 A weak cold front across the northern ranchlands this evening will continue to drift slowly southward and linger across the CWA Monday into Tuesday. (12Z TAFS) Convection has remained over the lower Texas coastal waters through the past few hours. A low to medium (20 to 60 percent) chance of rain will continue along the Lower Texas Coast and over the Gulf waters through the period.
644 AM CDT Mon Sep 8 2025 - Dry conditions have taken hold of the region and this trend will continue into the foreseeable future - Temperatures will gradually warm back into the lower to mid 90s by the middle of the week - Despite returning to the lower to mid 90s, dewpoints will remain low enough that it shouldn't feel miserable No major changes to the forecast over the next 7 days. Current upper-air analysis shows a trough over the eastern CONUS and a ridge building in the southwest CONUS. As we move through the week, this ridge will only gradually push eastward and take hold of our region.
651 AM EDT Mon Sep 8 2025 High pressure building in from the north will bring cooler and drier weather to the area for the first half of the week. Key Message(s): - Cooler and drier air slowly moving into the area. The cold front has moved well south of the area now, with a modified polar air mass moving in behind. The northeasterly winds will support modest low level cold advection, with max temps this afternoon 5-10 degrees cooler than yesterday.
South of this boundary dew pts forecast by all CAMs and global models to reach the low-mid 60s mid to late this afternoon and with high temps around sfc CAPE values over 2000 j/kg are forecast near the MN/SD/ND border region. But otherwise warming temps aloft with 500 mb ridge developing north into central Canada while 500 mb trough moves into the western US.
615 AM CDT Mon Sep 8 2025 Longwave troughing over the Great Lakes region is beginning to lift away to the northeast. As it departs, a weak, residual upper trough is expected to linger across the southeast US through the week.
From there, a mid- level ridge looks to amplify across the Plains, leading to gradually warming temperatures throughout the week.
635 AM EDT Mon Sep 8 2025 High pressure becoming locked in across the region will ensure a prolonged period of dry conditions, spanning at least the next six days.
829 AM EDT Mon Sep 8 2025 Currently at the surface, a weak area of low pressure is spinning over the eastern Gulf, with south and southwest low level flow continuing to pump tropical moisture into the Florida Peninsula.
At the surface, weak stationary boundary runs from northwest to southeast across the SD plains, with slightly dryer and warmer air on the western side of the boundary.
- Summer-like conditions return a ridge over the region and scattered showers and thunderstorms increasing in coverage through the week. Partly cloudy skies are expected with a front draped across central and southern Montana, and high pressure pushing from Canada into northeast Montana.
628 AM EDT Mon Sep 8 2025 Expansive high pressure will guarantee fair dry weather prevails through the work week. Temperatures will trend warmer day by day through midweek, then remain seasonable through the weekend. Broad upper level troughing and cool air aloft will linger overhead through the day today while progressive sfc-850mb ridging builds squarely over the eastern Great Lakes. This will result in another quiet fall-like weather day, and despite the colder start high temperatures will be a few degrees warmer overall compared to yesterday.
339 AM MDT Mon Sep 8 2025 - Expect isolated to scattered afternoon showers and thunderstorms over the higher terrain daily through mid week.
726 AM EDT Mon Sep 8 2025 High pressure builds in today and stays in control through at least Tuesday.
637 AM CDT Mon Sep 8 2025 (Today) Water vapor imagery shows the upper level trough entrenched across much of the Southeast this morning. This will make for another beautiful early September day with highs this afternoon topping out in the lower 80s with a few upper 70s in the higher terrain. Dewpoints in the lower 50s makes for a very comfortable afternoon.
/Issued 1219 AM CDT Mon Sep 8 2025/ /Through Tuesday Night/ A relatively dry airmass will be in place across North and Central Texas through Tuesday thanks to a large area of high pressure situated across The Great Lakes. Given the clockwise circulation around the high, our winds across North and Central Texas will remain out of the east/southeast, generally below 10 mph. By Tuesday morning, cooler conditions can be expected with temperatures ranging from the mid 50s to around 62 degrees. Slightly warmer temperatures are expected on Tuesday as our airmass begins to modify in response to increasing mid-level heights.
Issued by National Weather Service Jackson KY 810 AM EDT Mon Sep 8 2025 High pressure will shift slowly east across the region this week, resulting in dry conditions and a gradual warming trend.
712 AM EDT Mon Sep 8 2025 (Today through Tuesday) Model and synoptic analyses depict a deep mid/upper lvl trough descending upon the US east coast, while a sfc stationary boundary remains stretched across the central Gulf and central Fl. Meanwhile, the northern half of the peninsula remains at the base of the trough, which may contribute a little better dynamic support for stronger thunderstorms this afternoon.
1043 AM EDT Mon Sep 8 2025 High pressure builds in today and stays in control through at least Tuesday.
Low pressure moves in from the west today. Tuesday evening, the upper level ridge to our west is starting to move towards the area.
753 AM PDT Mon Sep 8 2025 A low pressure system will gradually bring cooler weather this week and temperatures will be mostly below normal. Robust west winds are expected this afternoon, especially for the mountain ridges, desert slopes and high deserts with gusts 25-40 mph, locally up to 45 mph through the San Gorgonio Pass.
646 AM EDT Mon Sep 8 2025 (Today and tonight) A weak cold front is forecast to continue to slowly push southeastward through the area today before eventually stalling out offshore. Troughing over the eastern CONUS along with some deep layer moisture and proximity to the front today will still allow for some scattered showers and storms across the southeastern half of the area this afternoon. Highs today are forecast in the mid 80s to low 90s with max heat indices only a few degrees warmer.
133 PM EDT Mon Sep 8 2025 A prolonged period of mostly dry weather is expected as high pressure dominates. KEY MESSAGES: - Below-normal temperatures and dry conditions continue --------------------------------------------------------------- High pressure will be centered basically right over the forecast area today. Heading into the overnight tonight, skies will clear out with temperatures again falling into the low 40s but some lower 30s are possible in the higher valleys of Eastern Tucker County.
146 PM EDT Mon Sep 8 2025 Drier and cooler weather will persist for much of the week as high pressure becomes well established across the region. Diurnal clouds will dissipate as the sun sets, and winds will lessen as the high settles directly over the region. The usual cold hollows could approach freezing, so the frost advisory remains in place for these areas. Tuesday and Tuesday night will be quite similar to today/tonight, just a few degrees warmer both periods. High pressure will shift a bit eastward for mid week, though it will still have a firm hold on our region.
215 PM EDT Mon Sep 8 2025 High pressure centered over the Northeast will extend southwest into the Mid-Atlantic and the Carolinas through much of the work week.
As the Omega block forms, look for upper ridging to expand eastward into the Mississippi Valley resulting in warming temperatures and dry conditions.
106 PM EDT Mon Sep 8 2025 A period of tranquil early autumn weather is in store for the central Appalachians this week as a strong high-pressure system settles over the region. However, overnight and early morning hours will be notably cooler, bringing a crisp feel to the air. Expect quiet weather courtesy of strong area of high pressure. Overnight and early mornings temperatures will be notably cooler with lows in the 40s. On the flip-side, the afternoons will feature mild conditions with highs ranging from the 60s mountains to the lower to mid 70s in the foothills and piedmont.
GOES-19 Satelitte reveals while the Lower and Middle Keys are almost cloud free, the Upper Keys do have some upper level clouds blocking some of the sun. This trough will be slowly sheared out mid to late week.
A look at the current surface map showed a low pressure center over western ND with a trough over much of the area. The main concern will be around 00-04Z if the cap of warmer air above the surface is able to be eroded.
1256 PM EDT Mon Sep 8 2025 A cold front will settle off the coast of the southeastern United States into the middle of the week as cool high pressure extends into the area from the Mid-Atlantic. We would expect these showers to dissipate by the early morning hours, if not sooner, as the low-level front continues to push south of the area. Cool high pressure will extend down from the OH valley and Mid- Atlantic states for highs typical of late September with mid 70s in the NW to around 80 in the SE. The pressure gradient between the high and the offshore front will promote some gusts out of the NE today at 15- 25 mph, which may continue at times to 10-15 mph this evening before relaxing somewhat overnight.
Then, our warming trend continues through the rest of the period as we transition from broad troughing to a ridge of high pressure. Chattanooga Airport, TN 57 83 57 86 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 54 80 55 82 / 0 0 0 0 Oak Ridge, TN 54 80 54 83 / 0 0 0 0 Tri Cities Airport, TN 48 76 49 78 / 0 0 0 0.
145 PM EDT Mon Sep 8 2025 High pressure will bring mainly dry weather for much of this week, with below normal temperatures trending closer to seasonal levels by midweek. With the cool/dry air mass in place and the core of high pressure approaching with light/calm winds tonight, temps should drop off to levels around 2-3F degrees lower than last night toward daybreak. This should allow min temps to drop into the lower/mid 30s across the eastern Catskills, Schoharie County and SW Adirondacks, with patchy/areas of frost developing.
This weekend, the low pressure system will slowly move through the central Rockies, generating favorable conditions for multiple rounds of widespread rain showers and thunderstorms for the greater NE Montana area. PATTERN: Generally high pressure in control, with a few embedded upper level disturbances that set off these hit-or-miss storms through mid-week with strong day-time heating into the mid to upper 80s.
Highs tomorrow climb back into the low to mid 80s.
* Cooler temperatures throughout the week, warming over the weekend.