Aikyam-Lab/Synoptic-Bench huggingface dataset:
552 AM CDT Sat Sep 7 2024 - Quiet weather with cooler temperatures this weekend and plenty of sunshine. This high pressure will slide south and east across the area today bringing lower humidity to the area. Tonight, the high pressure will be over central Illinois. With the lower dewpoints and clear skies again, we will see even cooler temps tonight across the area will lows in the lower to mid 40s are possible. Little change in the forecast through the end of the week as upper level ridging to our west smooths out and becomes more zonal. Lows starting out in the 50s will eventually be more like the low 60s to end the week as the next wave moves towards the area.
645 AM CDT Sat Sep 7 2024 (Today through Sunday Night) Cold front is moving south of the state early this Sat morning. Temps by sunrise this morning will drop down into the low 50s across NRN AR. to the low to mid 60s across the south. This cooler drier airmass will continue settling across the region over this weekend. to the low to mid 50s across SRN sections.
However, a fairly extensive layer of smoke aloft is in place across much of SW MT, where it will likely remain trapped within fairly light flow under a lingering mid- upper level ridge.
624 AM CDT Sat Sep 7 2024 (Today through Sunday) The day will begin with a cold front moving southeast, completing its passage through the Mid State. Highs today will be 10-15 degrees cooler than yesterday and humidity levels will be much lower. (Sunday Night through next Saturday) Quiet and dry wx will continue through midweek as as upper level ridge sets up over the eastern US. (12Z TAFS) With the overnight cold front being south of our terminals, everyone has gone VFR this last hour.
High pressure sets up over Illinois today. Copple High pressure over the region will bring mostly clear skies for the upcoming 24 hours.
Here cold air advection will drop temperatures into the low 50s to mid 50s.
(Now through Sunday) The rainy pattern marches on as the upper level trough finally pushes east of the area.
639 AM CDT Sat Sep 7 2024 - Much cooler temperatures and lower humidity this weekend. Surface ridging this weekend will bring dry weather and much cooler temperatures.
NW upper flow remains in place across the Central Plains between troughing progressing E through the Great Lakes and upper ridge from the 4 Corners into SW Canada. A warming trend develops on Sunday thanks to deepening lee troughing and resulting stronger Srly flow/mixing.
No rain in sight with shower/thunderstorm activity being limited to the higher terrain in north-central to NE NM this evening. High pressure is expected to continue to build and dominate the FA going into tomorrow with temperatures maybe a couple degrees warmer.
Upper-air analysis from this evening shows an amplifying longwave trough over the Great Lakes. As this disturbance continues to move east, ridging will build into the central CONUS this weekend and persist through the upcoming week. As high pressure moves to the east, southerly winds will return and initiate a warming trend that will persist through this upcoming week.
620 AM CDT Sat Sep 7 2024 -Chilly morning temps with isolated frost potential recovering to the 70s today -Well above average temperatures beyond today Morning lows have largely settled in the low 40s with a few dipping into upper 30s but aside from very isolated cases frost looks to have largely stayed out of the area. A departing upper low currently centered over Lake Huron with a trailing weaker PV anomaly being pushed south through MT amid N/NW flow along the eastern periphery of upper riding has weather looking very benign for the short term. Ridging becomes more pronounced through the weekend with warming temps and little worry for weather impacts.
In the wake of the tropical moisture plume, a cold front can be identified in surface observations as dewpoints across northern Mississippi are now dropping through the 60s F and will wind up in the 40s F by tonight. A cold frontal boundary is expected to sweep through the CWA later today from the NW, bringing N/NE flow into the Lower Mississippi Valley region. Highs are expected to remain in the lower to middle 80s, which is slightly above average for September, but comfortable compared to the past few weeks. /AJ/ Sunday through Saturday: As the drier post-frontal airmass advects in to dominate the area, an upper-level ridging pattern begins to setup. The end of the weekend into the beginning of the week high pressure will be dominate across much of eastern CONUS.
This afternoon, the recent cold front continues to slowly progress south and further away from the region, while a broad center of upper-level high pressure builds slightly near the Four Corners. Today is the last of the expected rain chances for now as an isolated threat develops near the higher elevations this afternoon. Weak ascent and upslope flow behind the departing cold front aids in this activity despite nebulous large-scale forcing. These dry conditions promote more effective radiative cooling into the low 60s and even upper 50s by Sunday morning.
416 AM MDT Sat Sep 7 2024 - High pressure keeps warm temperatures, light winds, and limited rain chances.
The overnight lows into Sunday morning are the largest and most refreshing change as values dip into the mid to upper 50s across the Hill Country and the low to mid 60s elsewhere.
758 AM EDT Sat Sep 7 2024 Lake enhanced moisture will keep clouds and stray showers in the region today in the wake of a cold front. ---------------------------------------------------------------- A cold front is currently situated over the Laurel Highlands this morning.
609 AM CDT Sat Sep 7 2024 - Cooler today after some morning frost and freeze.
- Temperatures in the lower to middle 30s across northern WI this morning may lead to areas of frost. After some morning frost across north-central Wisconsin, temperatures across the region are only expected to rise into the lower to middle 60s by this afternoon, which is well below normal for this time of year. The increased clouds will keep temperatures a few degrees warmer tonight as lows range from the lower 40s across the north, to the middle 40s across central and east-central Wisconsin. Highs on Sunday afternoon are expected to recover into the lower to middle 70s, which is around normal for this time of year. With the high pressure situated across the Ohio Valley, surface winds will turn to a south to southwesterly direction for the upcoming week.
A large trough axis extends from the Great Lakes Region down through the Mid-Atlantic and off the East Coast of Florida. Stretched out behind this low, a stationary boundary is situated across North Florida, with scattered showers and thunderstorms over the Northern Gulf through the Big Bend region of Florida. Weak high pressure is dominating south of this boundary, with a light WSW flow in place the surface. As the parent low lifts northward, the subtropical ridge will build back in and the flow will return to the more prevalent ESE flow that has persisted for much of the last couple months.
1103 AM MDT Sat Sep 7 2024 - High pressure keeps warm temperatures, light winds, and limited rain chances.
(This afternoon through Sunday night) Quite the mundane short term, as WV imagery shows the upper ridge centered just southwest of the Four Corners. Sunday, looks like a carbon copy of today, only maybe a degree warmer and w/no convection.
1022 AM PDT Sat Sep 7 2024 A slight cool down will begin today as a weak upper level trough impacts the region, yet temperatures remain above seasonal norms through early in the upcoming week. Tonight, look for better humidity recoveries in all but the highest elevations. Thus, temperatures will drop into the low to upper 50's across much of the region, near 60 degrees across the Santa Clara Valley, and 60's to upper 70's in the higher peaks of the Central Coast.
(Rest of Today) Northwest flow aloft of 15-25 knots will continue across the TN Valley today, as a deepening upper low shifts slowly eastward across southern Ontario and the northern Great Lakes. As the true cold front (noted by dewpoints falling into the 50s) advances southward from the AL-TN border later this morning, lingering low stratus clouds will disperse from NW-to-SE, and although a light shower or two may occur as the front intercepts richer boundary layer moisture across our southeastern counties, POPs remain very low (10-15%).
1111 AM CDT Sat Sep 7 2024 Surface analysis late this morning places a cold front from the Appalachians back through central Alabama and into southern Mississippi. CJC A beautiful weekend is upon us behind yesterday's cold front with highs today and tomorrow in the mid 70s to lower 80s.
Upper level ridging overhead and dry mid to upper levels will lead to a precip-free forecast. NE-SW oriented surface ridging will move across the forecast area tonight with a modest lee trough developing tomorrow leading to a slight increase in wind speeds, primarily across the northwestern part of the forecast area.
Highs on Sunday will be in the mid 80s, the lows Sunday night will be in the lower to mid 60s inland to the lower 70s at the immediate coast.
1206 PM CDT Sat Sep 7 2024 (Rest of Today) Northwest flow aloft of 15-25 knots will continue across the TN Valley today, as a deepening upper low shifts slowly eastward across southern Ontario and the northern Great Lakes. As the true cold front (noted by dewpoints falling into the 50s) advances southward from the AL-TN border later this morning, lingering low stratus clouds will disperse from NW-to-SE, and although a light shower or two may occur as the front intercepts richer boundary layer moisture across our southeastern counties, POPs remain very low (10-15%).
Today will be slightly warmer than yesterday, with daytime temperatures in many locations running more than 5 degrees above climatological norms. Showers will reach the central Idaho early Sunday, but precipitation will be light with very limited measurable rain expected outside of the high terrain.
105 PM CDT Sat Sep 7 2024 - Much cooler temperatures and lower humidity this weekend.
140 PM MDT Sat Sep 7 2024 - Warmer Sunday with isolated afternoon and evening showers and thunderstorms in the mountains and over the far northeast plains. - Low chances (10-30%) for showers and thunderstorms most days and mainly over the higher terrain.
The center of the high will drift south and east over the next 24 hours allowing for a more pronounced southerly level flow to take hold across our area. Sunday should be nearly a carbon copy of today, only with warmer temperatures for most zones. The surface reflection of these systems is a low pressure system across southern Canada and a trough that extended down across the western Dakotas.
Cold front well south of the area this afternoon and finally seeing the much drier air working its way into West Central Texas. Even with nearly full sun, some areas may stay in the 70s with most areas climbing into the lower 80s.
Dry and cooler through Sunday for an early fall feel. Temperatures will run below normal especially tonight, when temperatures will drop enough to make a run at some record lows, with the records at Tri-CIties and Oak Ridge expected to be the most threatened. Daily Record Low Minimum Temperatures Date Chattanooga Knoxville Tri-Cities Oak Ridge 09-08 52(2017) 46(1984) 44(2017) 49(2017) (Sunday night through next Saturday) Key Messages: 1.
(Tonight through Sunday night) A cold front has moved to the upper TX coast and stretches back across the Coastal Plains to the Rio Grande near Eagle Pass. High pressure will continue to dominate during the short term. Temperatures Sunday will also be cooler than today with highs mostly in the 80s with parts of the Rio Grande Plains reaching the lower 90s.
152 PM EDT Sat Sep 7 2024 A cold front will push through the region tonight bringing isolated showers late this afternoon and evening. High pressure will build into the region on Sunday, providing generally dry and seasonable weather through mid week.
(This evening through Sunday night) For tonight through Sunday night, the overall pattern featuring an upper level ridge of high pressure initially situated around the four corners region and an upper level trof over the eastern states will slowly progress eastward through Sunday night. There is an outside chance for an isolated shower or thunderstorm or two to drift into the very far northwest sections this evening and Sunday evening from the higher elevations of southeast Colorado and northeast New Mexico.
1246 PM CDT Sat Sep 7 2024 - Cooler today after some morning frost and freeze.
1221 PM CDT Sat Sep 7 2024 - Quiet weather with cooler temperatures this weekend and plenty of sunshine. This high pressure will slide south and east across the area today bringing lower humidity to the area. Tonight, the high pressure will be over central Illinois. With the lower dewpoints and clear skies again, we will see even cooler temps tonight across the area will lows in the lower to mid 40s are possible. Little change in the forecast through the end of the week as upper level ridging to our west smooths out and becomes more zonal. Lows starting out in the 50s will eventually be more like the low 60s to end the week as the next wave moves towards the area.
High pressure sets up over Illinois today. Northerly winds gusting 15+ kt at times will weaken mid to late Saturday afternoon as pressure gradients lessen with high pressure building overhead.
A weak trough of low pressure near the northwest CA coast will push inland into southern OR tonight. The timing of this passage favors ridge level winds peaking overnight into Sunday morning with gusts 45-55 mph, but is less optimal for maximizing winds at lower elevations.
Given the northerly winds and low humidity will stay with us tomorrow, the afternoon temperatures will only reach the low to mid 80s (~5 to 10 degrees below normal for early September).
258 PM CDT Sat Sep 7 2024 With the cold front having slipped south of the area, high pressure will bring cooler and drier conditions overnight. In fact, one might argue that tonight will be downright pleasant as lows drop into the lower to middle 50s north, around 60 along the I-20 corridor, and low to mid 60s to the south. It wouldn't be a surprise to see some areas touch the upper 40s for the first time since Spring near the highway 82 corridor. Tomorrow, we stay seasonably cool with continental high pressure remaining in control and highs in the low to mid 80s F.
After seemingly countless days of high pressure, some areas of interest are showing up on satellite this afternoon. In the near term, visible imagery shows wildfire smoke thickening across north-central Idaho, southwest Montana, and parts of west- central Montana under the established ridge of high pressure.
1217 PM CDT Sat Sep 7 2024 (Today and tonight) Light winds and mostly clear skies are expected tonight as high pressure builds to the west. As such, lows will be slightly cooler than last night generally ranging from the mid 50s to lower 60s. Quiet conditions will continue through the day, with light southeasterly winds and highs reaching the low-to-mid 80s.
(Rest of today through Sunday) Spectacular weather for September as a strong cold front has nearly completed its passage through Middle Tennessee. Observation sites across the area are reporting temperatures in the low 70s with a cool northerly breeze with gusts up to 20 mph. Temperatures will steadily increase through the week as the southeast falls back under the influence of an upper-level ridge.
204 PM EDT Sat Sep 7 2024 Canadian high pressure will bring dry but cool conditions the region through the weekend. Still expect overnight lows mostly in the upper 30s to lower 40s, but a few cooler readings will be possible in outlying areas across the north and east. A large area of high pressure settling slowly across the CONUS is forecast to dictate weather conditions through the period. Dry weather is expected in the subsident circulation around the high.
Synopsis: Surface analysis early this afternoon shows strong high pressure in place over MN/WI/IA. Aloft, strong ridging was in place over the Rockies, while a deep upper low was found over Ontario. Models suggest the the upper ridge in place over the Rockies will slowly continue to shift eastward reaching the western plains by Sunday night. All of this will impact the surface with the arrival of the strong high pressure system over the upper midwest settling across IL/IN.
(Tonight) Seasonably cool/tranquil wx conditions prevail across the mid TN Valley heading into the afternoon hrs this Sat, as a large dome of high pressure out of the northern Plains settles into the Midwest region. Drier air is also filtering into the area out of the NNE following the passage of a cold front early this morning. Mostly clear skies coupled with dew pts falling into the mid 40s will translate into an unseasonably cool early Sun, with lows dropping into the upper 40s across southern mid TN into the lower 50s over most of north AL.
High pressure will build overhead Sunday, then remain nearly stationary over the region through much of the week. Surface cold front has cleared the forecast area. High pressure over the upper mid-west will build across the Ohio Valley and Mid- Atlantic tonight and Sunday. Key Messages: 1) Confidence is high for dry weather through the early part of the week with high pressure in control.
Given the northerly winds and low humidity will stay with us tomorrow, the afternoon temperatures will only reach the low to mid 80s (~5 to 10 degrees below normal for early September). Tropical development is favored in the Gulf with the low pressure most likely to gradually track northward along or near the Texas Coast over the next several days.
247 PM EDT Sat Sep 7 2024 A slow moving cold front will push east of the Catskills and Poconos late this afternoon, taking steadier rain showers with it.
Warmer afternoon temperatures will result, warming through the 80s, with several southwest zone locales near 90 at peak heating. A lee cyclone near 1004 mb near Denver will support south wind gusts near 30 mph Sunday afternoon, especially north and west of Dodge City.
1215 PM CDT Sat Sep 7 2024 (Rest of today through Sunday) Spectacular weather for September as a strong cold front has nearly completed its passage through Middle Tennessee. Observation sites across the area are reporting temperatures in the low 70s with a cool northerly breeze with gusts up to 20 mph. Temperatures will steadily increase through the week as the southeast falls back under the influence of an upper-level ridge.
Latest water vapor imagery shows the region in northwesterly flow aloft with an upper-level low over the eastern Great Lakes and an upper-level ridge over the western CONUS. At the surface, high pressure is present across the region with the center over the Upper Mississippi River Valley. Northwesterly flow aloft and the center of the high to our north is helping establish northerly CAA into the CWA. By Sunday, the low-level high will dominate over the region with light winds and sunny skies. Temperatures on Sunday will be a few degrees warmer than today as CAA will no longer be present.
A cool and dry ridge of high pressure will bring fall-like temperatures to the Mid-South this weekend.
1239 PM CDT Sat Sep 7 2024 (Today through Sunday Night) Cold front is moving south of the state early this Sat morning. Temps by sunrise this morning will drop down into the low 50s across NRN AR. to the low to mid 60s across the south. This cooler drier airmass will continue settling across the region over this weekend. to the low to mid 50s across SRN sections.
1025 AM CDT Sat Sep 7 2024 Surface analysis late this morning places a cold front from the Appalachians back through central Alabama and into southern Mississippi. CJC A beautiful weekend is upon us behind yesterday's cold front with highs today and tomorrow in the mid 70s to lower 80s.
Analysis charts show low pressure over the southwest Atlantic near the Carolina coasts with a stationary boundary located over north Florida. Afternoon highs in the low to mid 90s with heat index values as highs as 100-107 and partly cloudy to partly sunny skies are forecast.
Water vapor imagery this afternoon depicts a lifting trough situated over New England as an upper ridge continues to build over the Desert Southwest. The upper ridge currently situated over the Desert Southwest is progged to gradually shift eastward throughout the week.
257 PM CDT Sat Sep 7 2024 - Cool, fall-like weather continues this weekend before turning warmer by the middle of the week. Water vapor imagery early this afternoon shows a deep upper trough over the eastern Great Lakes Region with northwest flow over the Midwest. At the surface, high pressure centered over the Upper Mississippi Valley will continue to drop southeast, becoming positioned over central Illinois by the start of Sunday. Tonight's lows will be even cooler underneath clear skies and light winds with temperatures expected to dip down into the low to middle 40s.
Cold air advection to persist through the remainder of the weekend with lows tonight in the lower 50s to near 60 degrees. High temperatures on Sunday to average near 80 degrees with continued cool conditions on Sunday night with lows in the lower to middle 50s.
UPDATE Morning lows have largely settled in the low 40s with a few dipping into upper 30s but aside from very isolated cases frost looks to have largely stayed out of the area. A departing upper low currently centered over Lake Huron with a trailing weaker PV anomaly being pushed south through MT amid N/NW flow along the eastern periphery of upper riding has weather looking very benign for the short term. Ridging becomes more pronounced through the weekend with warming temps and little worry for weather impacts.
133 PM EDT Sat Sep 7 2024 Lake enhanced moisture will keep clouds and stray showers north of the region today in the wake of a cold front. ---------------------------------------------------------------- A cold front is currently situated east of State College, PA Laurel this afternoon. You can't rule out a isolated thunderstorm near I-80 given shallow instability (100J/kg to 300J/kg) and the freezing level dropping below 8kft.
Aside from a few high clouds across portions of north Louisiana and south Arkansas, mostly sunny skies to prevail with afternoon highs forecast to climb into the lower 80s. /05/ (Saturday through Sunday) Cold front as of 06z was located very near the I-30 Corridor and will continue making progress south and east this morning, moving to near the I-20 Corridor by 12z and through our entire CWA by 18z this afternoon.
207 PM EDT Sat Sep 7 2024 A cold front will move through early this evening with showers ending and cooler conditions returning. Brisk and cooler than normal temperatures close the weekend with\isolated showers over the Adirondacks.
201 PM EDT Sat Sep 7 2024 A slow moving cold front will push east of the Catskills and Poconos this afternoon, taking steadier rain showers with it.
Cooler and drier conditions were also observed this afternoon with temps in the 70s to lower 80s.
A slight cool down will begin today as a weak upper level trough impacts the region, yet temperatures remain above seasonal norms through early in the upcoming week. (This evening through Sunday) A ripple through the longwave pattern over the West Coast this afternoon thanks to an upper low sweep eastward through N CA/S OR. While this feature is bringing showers and thunderstorms up north it's resulted in sunny, but cooler conditions across the Bay Area and Central Coast.
Early afternoon GOES-East clean IR satellite imagery shows a sharp trough over the Great Lakes region lifting northeastward with a ridge over the western US, which places Iowa underneath mid-level northwesterly flow.
NBM is generally toward the cooler side of the guidance envelope, so opted to run with that for this forecast instance.