Aikyam-Lab/Synoptic-Bench huggingface dataset:
250 AM MST Sun Nov 17 2019 Northwest flow aloft will persist today in the wake of yesterday's midlevel trough. Meanwhile, high pressure will rebuild to our west, hindering the progression of a closed low off the coast of Baja. Daytime highs today will generally be comparable to yesterday with values only a couple degrees cooler north of I-70. Further south, 700mb temperatures remain rather unchanged so highs will be the same if not slightly warmer today.
343 AM CST Sun Nov 17 2019 As of 09Z Sunday morning, a neutrally tilted midlevel trough was positioned across the Central and Northern Plains. Skies will clear quickly by late morning as the midlevel trough progresses eastward, setting the stage for a pleasant fall day. Surface ridging will traverse the CWA overnight, shifting winds from the northwest to the southwest at 5-10 kt. In the wake of the midlevel trough that is currently traversing the CWA, northwest midlevel flow will ensue by Monday.
355 AM CST Sun Nov 17 2019 The short term forecast remains mostly dry and warmer. Early morning temperatures are near to slightly below freezing. Dew points are also slightly below freezing. Will continue to monitor conditions and issue a dense fog or freezing fog advisory if conditions deteriorate.
Pattern change still on track around mid week with breezy winds, cooler temperatures and possible rain/snow mainly in the Sierra Nevada. As high pressure continues to build in, clear skies and light winds are seen across the majority of NorCal interior. Much warmer than normal temperatures will be seen today and tomorrow, with some locations possibly breaking high temperature records.
High pressure will shift further to the east as an upper level trough and associated weak surface boundary move through Texas.
High pressure weakens this week with temperatures returning to near average.
Low pressure tracking across central Canada will drag a trough across tonight. Have continued the mention of light freezing rain/sleet/and rain 06Z-14Z over portions of eastern SD and west central MN. It may end up more of a drizzle situation with the low level moisture and dry air aloft.
A Pacific cold front crosses the area tonight, with gusty northwest winds to develop Monday behind the front with gusts up to 35 mph possible during the late morning into the early afternoon hours. Expect a very mild night tonight as warm air aloft combines with cloud cover and a well mixed boundary layer, with lows all areas expected to remain above the freezing mark. Thermal profiles indicate all rain with above freezing temperatures from the surface up through nearly 700 mb.
Weak high pressure with northwest flow aloft is over the area. With high pressure, some patchy fog may happen this morning.
Northwest flow will continue aloft through Monday morning ahead of an incoming trough that will shift the flow out of the southwest. An incoming trough will bring showers to the northern half of the area Monday night, with snow levels around 8000 ft.
The warm thermal profiles indicate that the precipitation will fall mainly as rain, however some light snow is possible in the higher elevations of the Black Hills, with only light accumulations expected. Behind the departing system, breezy conditions are expected on Monday with slightly warmer temperatures, mainly in the 50s.
A much wetter and cooler pattern will set up Tueday into the end of the week.
An advancing upper level trough will bring chances for rain and snow today.
Scattered midlevel clouds have moved in behind the cold front that pushed through yesterday afternoon and evening. Skies should become mostly clear this morning, but highs are only expected to reach the 50s in this cooler airmass. just a few degrees warmer with a stronger northwest wind.
After a very chilly start to the day with temperatures having fallen into the upper 20s to lower 30s at most locations as of the predawn hours, we will see temperatures rebound into the lower 60s by afternoon under mostly sunny skies.
505 AM CST Sun Nov 17 2019 Gusty northerly winds behind a cold front will diminish mid to late afternoon. /issued 251 AM CST Sun Nov 17 2019/ Today's cold front is pretty much on track cutting southwest to northeast from Morton to Plainview to Memphis and will continue to move southward through these early morning hours. The next cold front will move into the forecast area on Monday, stalling there before dissipating Monday evening. Despite the presence of that front, an increase in thicknesses will result in warmer temperatures than those of today.
As for temperatures, they will be slightly cooler today, but will still remain above normal. Thus will see gusty winds from 45 to 55 mph over the higher terrain and near the base of the foothills overnight. The first half of the week continues to look dry and mild across the forecast area as an upper level ridge builds over the interior western United States.
Southeast/easterly flow and the increase in cloud cover has kept temperatures warmer during the overnight hours, with colder readings in the southeast and warmer temps in the northwest. Cold front currently located from far northern Missouri into the panhandles region of Texas and Oklahoma will sweep across Arkansas this afternoon and evening. Low level moisture with this system is fairly negligible, as we really haven't had ample opportunity for return flow between the front and surface ridging departing to the east. At any rate, northwest upper flow will prevail behind the front, with high pressure following. With the front quick to leave, and surface ridging passing to the southwest, winds will be westerly, then shift back around to the south by Monday.
/Issued 346 AM CST Sun Nov 17 2019/ Upper trough continue to move through the Central Plains this morning and has resulted in widespread mid and high clouds cover over the region. At the surface a weak cold front extending from central KS into northwest OK, but despite relatively strong forcing with the upper system, the lack of moisture should limit any precip to a few sprinkles or very light showers near KS and MO borders this morning.
/issued 355 AM CST Sun Nov 17 2019/ The short term forecast remains mostly dry and warmer. Early morning temperatures are near to slightly below freezing. Dew points are also slightly below freezing. Will continue to monitor conditions and issue a dense fog or freezing fog advisory if conditions deteriorate.
346 AM CST Sun Nov 17 2019 Upper trough continue to move through the Central Plains this morning and has resulted in widespread mid and high clouds cover over the region. At the surface a weak cold front extending from central KS into northwest OK, but despite relatively strong forcing with the upper system, the lack of moisture should limit any precip to a few sprinkles or very light showers near KS and MO borders this morning.
With warmer temperatures sfc and aloft today, most precipitation will be rain for the remainder of the state. Later tonight into Monday, the midlevel pattern will buckle briefly, with ridging extending across WY.
641 AM EST Sun Nov 17 2019 Weak systems early in the week give way to high pressure mid week. Despite a chilly start, afternoon highs will be mainly in the mid 50s for the lowlands and upper 30s to mid 40s for the mountains as low level flow turns more southeasterly in response to weakening influence of the coastal storm off the Carolinas and increasing influence of trough over the Midwest. Increasing upper level cloudiness is expected this evening with broken to overcast sky cover spreading from west to east ahead of the aforementioned trough approaching from the western Great Lakes - as one could expect with the peak of the Leonid meteor shower occurring early Monday morning.
/Issued 1031 AM CST Sun Nov 17 2019/ Mid and high clouds continue to push east this morning as a cold front moves into eastern Oklahoma.
A weak disturbance was passing across the area and isolated showers developed over portions of the lower columbia basin.
1133 AM CST Sun Nov 17 2019 Overcast skies and scattered very light rain will continue through early afternoon along and east of a Nevada to Joplin line and east of Highway 65 through mid afternoon as a cold front moves across the forecast area. Temperatures are actually a little warmer behind the cold front where cloud cover has dissipated.
satellite imagery suggests thin high clouds will continue to stream across the CWA today but there will be plenty of insolation to allow temperatures to top out mostly in the lower 60s. After a very chilly start to the day with temperatures having fallen into the upper 20s to lower 30s at most locations as of the predawn hours, we will see temperatures rebound into the lower 60s by afternoon under mostly sunny skies.
157 PM EST Sun Nov 17 2019 Low pressure off the Carolina coast will move northeast into the Mid Atlantic states. The low level clouds should continue to slowly dissolve from south to north over South Florida rest of this afternoon into this evening. Highs on Monday should be warmer than today in the 70s with lows Monday night in the 50s, except around 60 along the metro areas.
Again, this system will be moisture starved in the lower levels, and thus maybe a few sprinkles over in NW AR on Monday.
/issued 1046 AM CST Sun Nov 17 2019/ Clouds will continue to spread into the Mid-South this afternoon ahead of a cold front that is currently located across Missouri. Will update to adjust sky conditions and make some minor tweaks to temperatures as clouds may keep temperatures a tad cooler than preciously thought. /issued 355 AM CST Sun Nov 17 2019/ The short term forecast remains mostly dry and warmer. Early morning temperatures are near to slightly below freezing. Dew points are also slightly below freezing. Will continue to monitor conditions and issue a dense fog or freezing fog advisory if conditions deteriorate.
1108 AM EST Sun Nov 17 2019 An upper trough, whose axis now is near the KS/MO border, will swing into our region Monday morning.
Monday afternoon and night will see moderate NNW flow aloft gradually weaken and become more westerly as the ridge begins to collapse. A developing storm will move into the Pacific Northwest and begin to dig south, while the persistent closed low off of Baja CA begins to fill and show signs of lifting to the NE.
Otherwise expect highs this afternoon to top out in the lower 60s with increasing cloud cover from a system to our northwest approaches the area by tonight. A fast-moving upper-trough will quickly shift east into the Tennessee Valley tonight into Monday, bringing cloud cover and a shot of cooler air into the region. This will knock highs back into the lower 50s for Monday -- with breezy NW flow knocking wind chills down into the 40s. The front will quickly shift east of the region Monday night, with cloud cover helping to keep temperatures warmer by around 5 degrees (with lows in the mid to upper 30s).
With lift and cloud cover Monday, afternoon temps should be a few degrees cooler than today, but did bump-up blend guidance a couple of degrees across the board as they seems too cool for scenario, and generally have had a cool bias. Much warmer temps and increasing rain chances are expected late week.
Modest uptick in SFC dewpoints expected today and tonight in association with a digging ERN CONUS trof and weak SFC front will result in warmer low temperatures tonight.
A weak surge in low level moisture along with warm air advection will result in an increase in cloud coverage as well as warmer afternoon temperatures.
Broad upper-level ridge is folding over the northwestern US this morning, with embedded cloudiness filtering in from the northwest. High pressure combined with strong surface based inversions will generate a period of stagnant air today into at least early Monday.
It looks like the best window for wave amplification will be after midnight tonight, but it still looks pretty sheared and a small threat at most for high winds on the higher east slopes of the Front Range. As for temperatures, they will be slightly cooler today, but will still remain above normal. Thus will see gusty winds from 45 to 55 mph over the higher terrain and near the base of the foothills overnight. The first half of the week continues to look dry and mild across the forecast area as an upper level ridge builds over the interior western United States.
246 PM CST Sun Nov 17 2019 Models depicting good short term consistency with a broad western ridge and a sharp trough overhead. Patchy light rain has exited the eastern Ozarks ahead of a cold front approaching I-44 at 20z. Surface temperatures are a bit odd in that they are warmer in behind the front as skies clear.
251 PM EST Sun Nov 17 2019 Low pressure off the east coast continues to push up the east coast and away from west central Florida. The work week is looking like a nice one with high pressure in control and temperatures slowly warming up.
1248 PM CST Sun Nov 17 2019 SFC obs combined with visible satellite this afternoon depict a cold front currently residing over Arkansas and Missouri slowly moving eastward. As the cold front approaches tonight, an increase in high clouds can be expected. As a result of the increased cloud cover, overnight lows should remain above freezing across the area. A cool day is in store to start the work week as CAA behind the cold front will keep afternoon highs only in the 50s.
247 PM EST Sun Nov 17 2019 Low pressure off the coast will continue to slowly lift northeast and away from the region. A weak cold front will move through on Monday with high pressure building in for the remainder of the week. Surface and upper level lows offshore of SC will continue moving northeastward and away from the region. An upper level trough will swing into the region overnight bringing increasing clouds. A negatively tilted upper trough will move across KY/VA toward the Mid-Atlantic Coast on Monday.
As the trough approaches, looking for cloud cover to increase overnight, along with a shift for a few hours to a SW wind.
1046 AM CST Sun Nov 17 2019 Clouds will continue to spread into the Mid-South this afternoon ahead of a cold front that is currently located across Missouri. Will update to adjust sky conditions and make some minor tweaks to temperatures as clouds may keep temperatures a tad cooler than preciously thought. /issued 355 AM CST Sun Nov 17 2019/ The short term forecast remains mostly dry and warmer. Early morning temperatures are near to slightly below freezing. Dew points are also slightly below freezing. Will continue to monitor conditions and issue a dense fog or freezing fog advisory if conditions deteriorate.
2 separate troughs will traverse the area with the first occurring tonight and the second occurring late Monday night. Another round of sprinkles or drizzle will occur Monday night as a slightly stronger trough moves through.
256 PM CST Sun Nov 17 2019 A cold front currently stretches from near Davenport, Iowa southwestward to Tulsa, Oklahoma. Temperatures have risen into the 50s across the Mid-South this afternoon with the exception of Northeast Mississippi where temperatures have risen into the lower to mid 60s due to limited cloud cover. Another upper trof and associated weak cold front will move into the area Monday Night.
High pressure will build over the area for the middle to end of the week.
215 PM CST Sun Nov 17 2019 An upper level trough is over the Midwest with a cut off low over the Pacific Ocean south of California. A cold front has moved through the area resulting in temperatures that are a little cooler than yesterday but still near normal.
The morning cold front is now well south and east of the area this afternoon which is allowing the northerly winds to gradually diminish. Another weak cold front will drop into the area on Monday however this will have little effect on the weather besides a brief shift back to weak northerly winds. This will be the case for the first half of the week as high pressure and upper level ridging sets up across the area.
Hedged closer to warmer guidance with good downslope flow and warming 850MB temperatures during the afternoon.
1110 AM EST Sun Nov 17 2019 An upper trough, whose axis now is over eastern KS/central OK, will swing into our region Monday morning.
/issued 251 AM CST Sun Nov 17 2019/ Today's cold front is pretty much on track cutting southwest to northeast from Morton to Plainview to Memphis and will continue to move southward through these early morning hours. The next cold front will move into the forecast area on Monday, stalling there before dissipating Monday evening. Despite the presence of that front, an increase in thicknesses will result in warmer temperatures than those of today.
An upper trough, whose axis now is over eastern KS/central OK, will swing into our region Monday morning.
The low-level cloud shield spreading down the Florida Peninsula is surprisingly widespread and stubborn to break up. The Lower Keys area already seeing a slow increase in sun breaks.
1140 AM CST Sun Nov 17 2019 Scattered midlevel clouds have moved in behind the cold front that pushed through yesterday afternoon and evening. Skies should become mostly clear this morning, but highs are only expected to reach the 50s in this cooler airmass. just a few degrees warmer with a stronger northwest wind.
A weak cold front will move across the CWA this evening and tonight, resulting in lower CIGS in the evening through night hours. A weak surge in low level moisture along with warm air advection will result in an increase in cloud coverage as well as warmer afternoon temperatures.
1031 AM CST Sun Nov 17 2019 Mid and high clouds continue to push east this morning as a cold front moves into eastern Oklahoma.
Chattanooga Airport, TN 63 37 57 37 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 59 37 54 37 / 0 0 0 0 Oak Ridge, TN 58 36 54 35 / 0 0 0 0 Tri Cities Airport, TN 58 35 52 34 / 0 0 20 20.
222 PM CST Sun Nov 17 2019 (Tonight and Monday) Cooler temperatures are in store for the remainder of this afternoon as a cold front has moved across the region today. Otherwise expect low temperatures to drop into the mid to upper 30s for tonight, with no freezing temperatures expected. High temperatures are forecast to reach into the low to mid 70s under sunny skies for tomorrow afternoon.
High pressure ridge will continue to shift eastward as a mid to upper level trough moves across the Central Plains and into the Great Lakes region. Winds will briefly become south to southwest this afternoon; however, a weak surface cold front is expected to move across the region this evening and tonight, bringing back northerly winds by early Monday morning. Low temperatures tonight will range in the mid 40s to low 50s in areas north of I-10 and in the low to upper 50s in areas south of I- 10. Mid to upper level high pressure and drier air mass is expected Monday limiting rain chances.
1026 AM PST Sun Nov 17 2019 Temperatures will be mild today with much of the Inland Northwest climbing into the low to mid 50s.
625 PM EST Sun Nov 17 2019 Low pressure off the coast will continue to slowly lift northeast and away from the region. A weak cold front will move through on Monday with high pressure building in for the remainder of the week. Surface and upper level lows offshore of SC will continue moving northeastward and away from the region. An upper level trough will swing into the region overnight bringing increasing clouds. A negatively tilted upper trough will move across KY/VA toward the Mid- Atlantic Coast on Monday.
/NF/ Tonight and Monday: Continued dry and cooler than normal through the period with only subtle differences from today as tonight's low temperatures will be a little warmer than last night and the highs Monday will be a little cooler than today.
Cooler temperatures in the 50s are as high as we will get this afternoon. broad northwesterly flow will continue through morning before high pressure begins to spread across Colorado. For Monday, high pressure out west will begin to shift eastward into Colorado.
/issued 215 PM CST Sun Nov 17 2019/ An upper level trough is over the Midwest with a cut off low over the Pacific Ocean south of California. A cold front has moved through the area resulting in temperatures that are a little cooler than yesterday but still near normal.
Northwesterly downslope flow will continue tomorrow with gusty winds winds developing over central and much of southwest Kansas as daytime heating mixes out the lower levels of the atmosphere.
/issued 222 PM CST Sun Nov 17 2019/ (Tonight and Monday) Cooler temperatures are in store for the remainder of this afternoon as a cold front has moved across the region today. Otherwise expect low temperatures to drop into the mid to upper 30s for tonight, with no freezing temperatures expected. High temperatures are forecast to reach into the low to mid 70s under sunny skies for tomorrow afternoon.
High pressure will build in over the forecast area through mid week.
SFC obs combined with visible satellite this afternoon depict a cold front currently residing over Arkansas and Missouri slowly moving eastward. As the cold front approaches tonight, an increase in high clouds can be expected. As a result of the increased cloud cover, overnight lows should remain above freezing across the area. A cool day is in store to start the work week as CAA behind the cold front will keep afternoon highs only in the 50s.
Northwest flow will continue across the central Plains in the wake of the mid level trough that moved through eastern Kansas today.
High pressure briefly moves over the region on Monday, but the next wet weather system quickly arrives late in the day.
909 PM EST Sun Nov 17 2019 Low pressure off the coast will continue to slowly lift northeast and away from the region. A weak cold front will move through on Monday with high pressure building in for the remainder of the week. Satellite images showing digging trough pushing towards the region. Models overnight do continue to indicate some light rain developing very late tonight towards morning as weak isentropic lift, good upper level divergence, and slight moisture increase all occur ahead of the advancing upper trough. With increasing cloud cover through the night, overnight lows will be in the lower to middle 40s. A negatively tilted upper trough will move across KY/VA toward the Mid- Atlantic Coast on Monday.
325 PM CST Sun Nov 17 2019 Tonight and Monday: Continued dry and cooler than normal through the period with only subtle differences from today as tonight's low temperatures will be a little warmer than last night and the highs Monday will be a little cooler than today.
Temperatures at 800 PM EST were in the lower 40s to lower 50s across the forecast area which is warmer than last night. Chattanooga Airport, TN 39 58 37 58 / 0 0 0 10 Knoxville McGhee Tyson Airport, TN 39 56 37 52 / 0 0 0 10 Oak Ridge, TN 38 56 35 52 / 0 10 0 10 Tri Cities Airport, TN 38 54 35 50 / 0 10 20 20.
Fairly sharp trough axis set to swing across the area late tonight into early Mon morning. A strong upper trough will sweep across the mid state later tonight and tomorrow morning.
Pattern change still on track around mid week with breezy to windy conditions, cooler temperatures and possible rain/snow mainly in the Sierra Nevada. High pressure will remain over the region early this week.
800 PM EST Sun Nov 17 2019 Relatively cold moist airmass in the low levels extends across the Florida peninsula in the wake of an area of low pressure off the mid Atlantic coast and is trapped under a very strong mid level subsidence inversion. A strong U/L disturbance will dig over the midwest tonight with the associated deep U/L trough approaching the southeast U. This will allow the mid/upper level ridge and strong subsidence aloft currently over the peninsula to shift east of the region. with the U/L trough pushing over the state.
/issued 256 PM CST Sun Nov 17 2019/ A cold front currently stretches from near Davenport, Iowa southwestward to Tulsa, Oklahoma. Temperatures have risen into the 50s across the Mid-South this afternoon with the exception of Northeast Mississippi where temperatures have risen into the lower to mid 60s due to limited cloud cover. Another upper trof and associated weak cold front will move into the area Monday Night.