Aikyam-Lab/Synoptic-Bench huggingface dataset:
(Tonight through Monday) A cold front will move through Central Alabama into early Monday. This front will reinforce the lower surface dew points and dry air. 75 Previous short-term discussion: (This afternoon through Monday) The diminishing cloud cover, decreasing dewpoints, and rain-free radar picture all point to the passage of the cold front which is located just southeast of Alabama. Humidity will continue to drop this afternoon, and it will begin to feel much more Fall-like as we enter a dry period dominated by high pressure. Temperatures will fall into the mid 50s to near 60F, but there may be some locally cooler spots across the northeast in the valley locations. Highs will range from the lower 80s north to mid 80s south.
557 PM EDT Sun Sep 17 2023 A cold front will move east of the area tonight. Dry high pressure will then dominate our weather through the week.
614 PM CDT Sun Sep 17 2023 (Thru Tonight) Mostly clear skies and nearby surface ridging will yield below average overnight lows again tonight. In fact, most areas drop even cooler than last night into the 50s by sunrise Monday.
Cool and calm conditions continue to persist as the trough continues to deepen over the southeast United States. Fog is possible in the low lying river areas overnight, though nothing to write home about. Tonight's lows are expected to dip into the low to mid 50s.
517 PM MDT Sun Sep 17 2023 Aviation Section Updated Expect increasing clouds, as the last very warm day for awhile gives way to slightly cooler temperatures on Monday.
An unseasonable mid latitude trough blankets the eastern United States and clips into the Gulf of Mexico. A weak surface reflection of this trough is located along Atlantic states and has resulted in weak winds across the Keys. Short Term Update - Through the overnight hours the previously mentioned mid latitude trough will continue to swing through the Atlantic states. Expect temperatures to bottom out in the lower 80s with dew points holding in the mid 70s. A low pressure system centered over the far southeastern United States will deepen as it migrates up along the Atlantic coast.
This activity continues to move east-southeast about 20 mph, away from the land zones as a cold front moves in overnight. (Through Tonight) A cold front will move southeast in the region this afternoon, with a weak low moving northeast along it as it moves in. The front will move to the southeast during the overnight, with high pressure building from the northwest.
Weak thunderstorm activity over western Harney County and virga activity elsewhere will continue to dissipate this evening as a low pressure system remains stationed off the California Coast. A cold front remains on track to cross through the region tomorrow, bringing in cooler conditions and breezy northwest winds. Models continue to show mostly dry conditions at the surface as the cold front crosses, with the highest potential for accumulating rainfall south of Twin Falls Monday afternoon. percent chance of thunderstorms this evening in southern Harney County due to moisture from a weak upper low off California. An upper trough from the Gulf of Alaska will push a cold front through our CWA late Monday afternoon and evening.
(This evening through Monday) Another pleasant night as high pressure provides for clear skies, light winds and overnight low temperatures in the 50's and low 60's. High temperatures tomorrow will be a few degrees warmer than today.
215 PM PDT Sun Sep 17 2023 Cooling temperatures today due to a low pressure system off the coast.
653 PM EDT Sun Sep 17 2023 Light showers will continue to advance across the region this evening along the leading edge of a trough.
727 PM EDT Sun Sep 17 2023 Light showers will continue to advance across the region this evening along the leading edge of a trough.
958 PM EDT Sun Sep 17 2023 A mid level trough will pivot southeast across the region tonight, bringing scattered showers and isolated thunderstorms through this evening before drier conditions evolve. A mid level trough will pivot southeast across the Great Lakes and Ohio Valley tonight. Lows tonight fall into the lower 50s. Northwest flow aloft develops as mid level trof shifts off to the east. Highs on Monday to top out in the lower and middle 70s.
724 PM EDT Sun Sep 17 2023 (Through Monday) A cold front will continue to work its way through the region this afternoon and evening. A taste of fall is expected for some areas tonight, with low temperatures dipping into the low to mid 60s for interior FL Panhandle, SE AL, and SW GA counties. Tomorrow, high pressure builds into the region and be accompanied with northerly winds.
816 PM CDT Sun Sep 17 2023 Upper low over the eastern 1/3 of the country sparked a few thunderstorms and a few other showers across the region late this afternoon and into the early evening hours. The showers have formed right along an upper trough that is swinging through Middle Tennessee today. High pressure will remain the dominant weather feature influencing our weather over the next several days.
425 PM PDT Sun Sep 17 2023 Cooler today with below normal high temperatures this week.
The development of a secondary (meso)low along the frontal boundary over far southern Lake Michigan has resulted in a local slowing and subtle reorientation of the surface cold front over southeastern MI. This has begun to change this afternoon as the parent positively tilted mid/upper level trough shifts from the western Great Lakes into the central lakes resulting in the east-southeastward displacement, and partial shearing, of the robust mid-level PV center near Chicago. Model solutions advertise enough shearing to support a respectable filament of dcva into southern SE MI coincident with steepening mid-level lapse rates within the aforementioned upper trough. Weak CAA follows in its wake as thermal troughing settles over the central Great Lakes late tonight into Monday.
Areas along the Nature Coast will get their first taste of fall with below 70 degrees dewpoints and cooler overnight lows Monday night.
Expect overnight lows in the lower to mid 60s north of I-10, mid to upper 60s further south.
The current air temps are still all over the place, with half or so in the lower to middle 70s and yet as cool as mid to upper 60s from Magnolia to Ruston, ready to fall through their dew points.
Smooth sailing is ahead overnight as cooler air settles into the region in the wake of the cold front. That said, given some forcing from the deep trough over the eastern CONUS, a few storms could become strong with frequent lightning, gusty winds, and heavy rain. Temperatures will struggle to climb out of the 70s (woohoo!) and dewpoints will drop into the 50s tonight! Conditions clear out through tomorrow across the CWA as the cooler temperatures continue.
KEY MESSAGES: - Warmer temperatures expected this week with multiple chances for rain by mid week through the end of the forecast period. Southerly flow sets up on Monday and will be with us for the majority of the forecast period, sending warmer temperatures and increased moisture our way.
744 PM EDT Sun Sep 17 2023 A cold front will move east of the area tonight. Dry high pressure will then dominate our weather through the week.
602 PM CDT Sun Sep 17 2023 (This evening through Monday Night) Drier air filtering in from the north combined with ridging building aloft means that the weather today is being much quieter compared the past few days. The dry air and mid-level ridging will remain in place through tomorrow, so expect a very similar conditions for the start of the work week. High temperatures on Monday will be a couple of degrees warmer than today with afternoon temperatures rising into the low to mid 90s.
642 PM CDT Sun Sep 17 2023 A longwave trough over the Great Lakes/Ohio Valley will quickly move eastward this evening. By 1200 UTC Monday, the ridge is expected to be located from east-central Missouri northeastward into northern Illinois. Temperatures will be quite a bit warmer, ranging from the low 50s to near 60 degrees from southeast to northwest.
640 PM CDT Sun Sep 17 2023 (This evening through Monday Night) The short-term continues to look dry, as the region remains sandwiched between troughing to the east, and ridging to the west.
615 PM CDT Sun Sep 17 2023 (This evening through Monday) Another pleasant night as high pressure provides for clear skies, light winds and overnight low temperatures in the 50's and low 60's. High temperatures tomorrow will be a few degrees warmer than today.
A larger scale upper trough and associated cold front will push across the region on Monday.
757 PM EDT Sun Sep 17 2023 (Through Tonight) A cold front will move southeast in the region this afternoon, with a weak low moving northeast along it as it moves in. The front will move to the southeast during the overnight, with high pressure building from the northwest.
844 PM EDT Sun Sep 17 2023 Showers and a few thunderstorms will move east of the area this evening as a cold front moves through the area. Moisture returns late week with low pressure potentially developing near the coastline leading to a slight chance of rain. Showers have developed along a cold front that is moving into the western portion of the forecast area. Drier air pushing in behind the front with temperatures dropping in the low to mid 60s. Upper trough axis moves through Monday, lifting and pushing off the coast Monday night.
1011 PM EDT Sun Sep 17 2023 A cold front will move east of the area tonight. Dry high pressure will then dominate our weather through the week.
854 PM EDT Sun Sep 17 2023 The forecast is on track as a cold front continues to move through the region, updates aren't necessary this evening. (Through Monday) A cold front will continue to work its way through the region this afternoon and evening. A taste of fall is expected for some areas tonight, with low temperatures dipping into the low to mid 60s for interior FL Panhandle, SE AL, and SW GA counties. Tomorrow, high pressure builds into the region and be accompanied with northerly winds.
The low is finally drifting southward this afternoon as depicted well in radar and satellite with a double barreled center from western Kankakee into Ford County. Scattered showers with perhaps some lightning continue to pinwheel around the low and will persist this afternoon until around sunset.
Skies will be mostly to partly cloudy with lows falling into the low to mid 70s.
1155 PM CDT Sun Sep 17 2023 (This evening through Monday Night) Drier air filtering in from the north combined with ridging building aloft means that the weather today is being much quieter compared the past few days. The dry air and mid-level ridging will remain in place through tomorrow, so expect a very similar conditions for the start of the work week. High temperatures on Monday will be a couple of degrees warmer than today with afternoon temperatures rising into the low to mid 90s.
910 PM PDT Sun Sep 17 2023 Another afternoon of dry and windy weather will heighten concerns for wildfires across the Inland Northwest following the passage of a dry cold front.
124 AM EDT Mon Sep 18 2023 (Through Monday) A cold front will continue to work its way through the region this afternoon and evening. A taste of fall is expected for some areas tonight, with low temperatures dipping into the low to mid 60s for interior FL Panhandle, SE AL, and SW GA counties. Tomorrow, high pressure builds into the region and be accompanied with northerly winds.
214 AM EDT Mon Sep 18 2023 Dry high pressure will dominate our weather through the work week.
Because, over the next several days we will transition into a cooler and wetter pattern.
As ridging continues to build in from the west, expect mostly sunny skies with some slight WAA. Given the antecedent cool air aloft, temps should be fairly mild, with highs only getting into the low to mid 60s.
1040 PM CDT Sun Sep 17 2023 (This evening through Monday) Another pleasant night as high pressure provides for clear skies, light winds and overnight low temperatures in the 50's and low 60's. High temperatures tomorrow will be a few degrees warmer than today.
312 AM EDT Mon Sep 18 2023 A progressive longwave trough axis is located over far eastern Kentucky and Tennessee, and will rapidly move east through the remainder of the period.
High pressure will allow for another mostly clear night across the forecast area. On Monday the ridge will flatten a bit as a weak disturbance starts to brush across northern CO in the afternoon.
321 AM EDT Mon Sep 18 2023 As a cold front pushes offshore this morning, high pressure will rebuild over the area through much of the upcoming week. Coastal low pressure could affect the region late week into the weekend. Today: Aloft, the region will remain under the influence of a trough extending southward from a low centered across the eastern Great Lakes region. At the surface, a cold front will shift offshore this morning and dry high pressure will prevail through the rest of the day. Forecast highs are in the low to mid 80s, with a few upper 80s possible along and south of I- 16. Tonight: High pressure will prevail with only a few thin cirrus passing through overnight.
151 AM MDT Mon Sep 18 2023 Current surface map places trough across far eastern Montana into southwest South Dakota.
1232 AM CDT Mon Sep 18 2023 (Tonight through Monday) A cold front will move through Central Alabama into early Monday. This front will reinforce the lower surface dew points and dry air. 75 Previous short-term discussion: (This afternoon through Monday) The diminishing cloud cover, decreasing dewpoints, and rain-free radar picture all point to the passage of the cold front which is located just southeast of Alabama. Humidity will continue to drop this afternoon, and it will begin to feel much more Fall-like as we enter a dry period dominated by high pressure. Temperatures will fall into the mid 50s to near 60F, but there may be some locally cooler spots across the northeast in the valley locations. Highs will range from the lower 80s north to mid 80s south.
216 AM EDT Mon Sep 18 2023 (Through Tonight) A cold front will move southeast in the region this afternoon, with a weak low moving northeast along it as it moves in. The front will move to the southeast during the overnight, with high pressure building from the northwest.
905 PM PDT Sun Sep 17 2023 A trough of low pressure parked off the California coast will keep a deep marine layer in place tonight, and bring more areas drizzle through Monday morning.
An upper level trough across the eastern U. The expansive upper level trough over the eastern United States will continue to shove a ridge west of the Bahamas further eastward. As this trough edges further to the south today, our forecast area will remain within weak cyclonic flow. The frontal boundary associated with this trough will move down the Florida Peninsula today, eventually stalling across Central Florida by late tonight.
Expect increasing clouds, as the last very warm day for awhile gives way to slightly cooler temperatures on Monday.
355 AM EDT Mon Sep 18 2023 A progressive longwave trough axis is located over far eastern Kentucky and Tennessee, and will rapidly move east through the remainder of the period.
955 PM MDT Sun Sep 17 2023 Central CONUS ridge will shift east in the period as a Pac NW trough digs into the west. Warmest day in the period will be Monday as the thermal ridge passes over the region, with 80s and a few 90s expected toward central SD. Western CONUS trough will begin to shift east Tues, shifting a lee-side trough through the region as a cool front.
1211 AM CDT Mon Sep 18 2023 (This afternoon through Monday night) An upper trough extends from Ontario down through the Mississippi River Valley, with a ridge over Mexico that extends up across SE NM/W TX and along the Rockies. Trough moves off Monday as ridge builds east. Temps warming after recent front, especially with ridge moving over the region. Lows tonight mainly in the 60s, lows Monday night a few degree warmer in the 60s with some 70s. After the rain yesterday have dense CU field across most of the region, could see a few afternoon storms in the Davis and Guadalupe Mountains with a better chance of storms Monday over the higher elevations.
238 AM MDT Mon Sep 18 2023 Another day of above average temperatures is expected across the region today, though it will be cooler than Sunday. Gusty winds and low relative humidity will keep fire weather concerns around through the day, but will subside tonight as even cooler air begins to establish itself across the region.
Heights begin to gradually fall over Arizona as the ridge begins to degrade and flatten. Quasi-zonal flow sets in over Arizona, with a cut-off low spinning off the Califorina Coast.
257 AM EDT Mon Sep 18 2023 Upper level trough moves through early today. High pressure Monday night through the end of the work week. An upper level trough will move through the area early today, producing a few showers. Even as the trough lifts out later today, some lingering moisture and low level instability could produce some showers. A high pressure system will then build over the area Monday night providing dry weather. Key Points: * High pressure over the area, keeping conditions dry. High pressure at the surface and aloft will remain in place for the short term period keeping conditions dry.
Through the next couple of days, the low off of the Pacific Northwest will continue to gradually move southward.
Winds will be slightly stronger in the higher terrain along the Continental Divide with gusts up to around 40 mph.
203 AM EDT Mon Sep 18 2023 A mid level trough will pivot southeast across the region tonight, bringing scattered showers and isolated thunderstorms through this evening before drier conditions evolve. A mid level trough will pivot southeast across the Great Lakes and Ohio Valley tonight. Lows tonight fall into the lower 50s. Northwest flow aloft develops as mid level trof shifts off to the east. Highs on Monday to top out in the lower and middle 70s.
210 AM CDT Mon Sep 18 2023 Upper level trough is departing to the east and should leave behind dry and pleasant conditions.
1240 AM CDT Mon Sep 18 2023 Upper low over the eastern 1/3 of the country sparked a few thunderstorms and a few other showers across the region late this afternoon and into the early evening hours. The showers have formed right along an upper trough that is swinging through Middle Tennessee today. High pressure will remain the dominant weather feature influencing our weather over the next several days.
225 AM EDT Mon Sep 18 2023 (06Z TAFS) VFR likely through around 09-10Z when showers ahead of approaching cold front approach coastal terminals.
1207 AM CDT Mon Sep 18 2023 (Thru Tonight) Mostly clear skies and nearby surface ridging will yield below average overnight lows again tonight. In fact, most areas drop even cooler than last night into the 50s by sunrise Monday.
120 AM PDT Mon Sep 18 2023 Cooling temperatures today due to a low pressure system off the coast.
Trough axis and cold front currently swinging through the forecast area. Otherwise, drier air moves in behind the cold front and plenty of sun expected today after any morning fog burns off.
1237 AM EDT Mon Sep 18 2023 A trough of low pressure will approach tonight and develop low pressure near the Mid-Atlantic coast on Monday.
339 AM CDT Mon Sep 18 2023 A quiet day ahead as upper ridging moves over the region. Breezy south winds can be expected by this afternoon as lee side troughing tightens the pressure gradient over much of central and eastern KS.
311 AM EDT Mon Sep 18 2023 Southeast Michigan now within the immediate wake of a high amplitude mid level trough axis, leaving deeper layer north-northwest flow to govern conditions to start the work week.
137 AM EDT Mon Sep 18 2023 Upper level trough moves through early today. High pressure Monday night through the balance of the work week. An upper level trough will move through the area early today, producing a few showers. Even as the trough lifts out later today, some lingering moisture and low level instability could produce some showers. A high pressure system will then build over the area Monday night providing dry weather. High pressure slowly crosses this period, bringing with it dry weather.
Winds will remain light but not calm (with central Indiana between high pressure to the west and a cold front to the east), so odds favor patchy fog rather than widespread. High pressure will slide across the area this evening and then move east overnight. This, plus the high clouds moving in overnight should help prevent a lot of fog formation. Some patchy fog may form though, especially east closer to the departing high and farthest from the high clouds.
209 AM MDT Mon Sep 18 2023 The upper ridge that's been present over the past few days has begun to flatten, with water vapor imagery showing some weak moisture beginning to pool into the area from the north as heights slowly drop. Lastly, a cold front will cross the area tonight, bringing an end to the above normal temperatures, and beginning the slow start to a pattern change.
1057 PM CDT Sun Sep 17 2023 A longwave trough over the Great Lakes/Ohio Valley will quickly move eastward this evening. By 1200 UTC Monday, the ridge is expected to be located from east-central Missouri northeastward into northern Illinois. Temperatures will be quite a bit warmer, ranging from the low 50s to near 60 degrees from southeast to northwest.
Lows will be in the lower to mid 60s. A few degrees warmer on Monday, with highs in the upper 80s to lower 90s.
This dry air will keep precipitation chances at bay, while high temperatures warm into the low to mid 90s.
400 AM EDT Mon Sep 18 2023 Warmer today with a few rain showers giving way to improving conditions this evening into tonight.
316 AM EDT Mon Sep 18 2023 Earlier showers and storms have either dissipated or moved east of our area as the surface cold front continues pushing through central KY. Otherwise, expect a beautiful day full of sunshine with light NW winds as high pressure builds across the region. Highly modified airmass behind the cold front will only see max temperatures today fall a degree or two from yesterday's highs with most places seeing highs in the mid to upper 70s.
313 AM EDT Mon Sep 18 2023 Southeast Michigan now within the immediate wake of a high amplitude mid level trough axis, leaving deeper layer north-northwest flow to govern conditions to start the work week.
348 AM EDT Mon Sep 18 2023 A trough will linger over the region today, but high pressure will build into the area tonight and persist through the end of the week. Widely scattered lake-enhanced showers and isolated thunderstorms remain possible across the snowbelt region of NE OH/NW PA through today thanks to an upper trough meandering across the lower Great Lakes and cold air advection over Lake Erie.
315 AM CDT Mon Sep 18 2023 1) Areas of fog to continue early this morning, mainly along and east of the MS River 2) Chances of showers and perhaps a thunderstorm or two increase after sunset tonight A quiet start to the work week is expected today, thanks to high pressure dominating over the Corn Belt region. Quiet conditions should prevail into the early evening hours, with the high pressure ridge axis translating eastward with time. Southerly low-level return flow around the ridge will enhance warm air advection into our region tonight, which will set the stage for increasing chances of showers and perhaps a thunderstorm or two late tonight.
In the meantime, the latest deterministic models as well as CAMs indicate that a warm front will develop near the MO/IA border by this evening.