Aikyam-Lab/Synoptic-Bench huggingface dataset:
A weak upper level trof will continue to move southeast through the area overnight. Currently highs are in the upper 50s, however confidence is growing that lower 60s may be possible across north central and southeast Nebraska as more models come in consensus of a warmer air mass in place between two systems, a closed low to the south of the High Plains and a disturbance across the far Northern Plains. Overnight Saturday a cold front will begin to move across the area.
Winds at the surface and at 850 mb should be generally out of the northeast which will keep afternoon temperatures on the cooler side with highs in the upper 40s to lower 50s. Tonight an upper low will be approaching from the southwest. The main center of the low should be into eastern New Mexico by early Saturday morning. Overall the weather conditions in southwest Kansas should be quiet with clouds on the increase in the far southwest as the upper level low approaches. There remains a low chance for precip for southern portions of southwest and south central Kansas Saturday as medium range models continue to show a closed upper low pushing slowly eastward through the panhandle of Texas and Oklahoma.
Expect ceilings to improve mid to late morning, with the bulk of the low cloud likely to be gone during the afternoon. /Issued 915 PM CST Thu Nov 26 2020/ Weak cold front has pushed into wrn Osage/Pawnee/Creek Counties at this time, and will continue to move through much of our CWA overnight.
1032 PM EST Thu Nov 26 2020 Currently - The parent high that extends a ridge across Florida is moving further off northeastward. The ridge across Florida is gradually weakening. The 850 mb ridge is across Florida and high moisture low level air is flowing westward into our area. The 700 mb to mid level ridge is aligned across South Florida and the Keys. Ridging to our north will maintain light northeast to east breezes. A weakening ridge across Florida will result in mostly gentle easterly breezes across Keys waters through the overnight period.
915 PM CST Thu Nov 26 2020 Weak cold front has pushed into wrn Osage/Pawnee/Creek Counties at this time, and will continue to move through much of our CWA overnight.
The front will bring slightly cooler conditions to the area on Friday as highs in the lower to middle 50s are expected. With the cooler and dry air mass in place lows will drop into the middle to upper 20s Friday night into Saturday morning. Highs on Saturday will again warm into the lower to middle 50s. An upper level trough that is currently across the western U. will continue to dig to the southwest and close off into an upper level low by Friday.
Models show a weak cold front reaching the western fringes of the PAH forecast area by 12z Friday, then making its way quickly across our area by 18z. High pressure will be centered over the middle Mississippi valley at 18z Saturday, drifting slowly east Saturday afternoon. We will see lots of sunshine, but north winds much of the day will give us cooler conditions, with highs a few degrees below normal.
Winds at the surface and at 850 mb should be generally out of the northeast which will keep afternoon temperatures on the cooler side with highs in the upper 40s to lower 50s. Tonight an upper low will be approaching from the southwest. The main center of the low should be into eastern New Mexico by early Saturday morning. Overall the weather conditions in southwest Kansas should be quiet with clouds on the increase in the far southwest as the upper level low approaches. Latest model runs still suggest the upper low moving through the Texas and Oklahoma panhandles through Saturday with drier air on the north side of the upper low in Kansas keeping the precipitation at bay.
A frontal boundary extended from southeast Nebraska across north central Kansas to low pressure over west central Oklahoma at 19Z. Some increase in clouds tonight will keep temperatures a little warmer across east central Kansas with readings in the lower 30s while lows in the 20s are expected elsewhere. High pressure builds into eastern Kansas on Friday while the southern stream low moves east into New Mexico. Modest CAA on Friday will keep temperatures cooler on Friday with highs in the lower 50s expected. The southern stream low gradually moves east across the southern Plains through Saturday night while a northern stream trough moves into the northern Plains.
There were some sunny intervals early this afternoon in eastern Wisconsin where there was good mixing ahead of a cold front that was in the western part of the state. Despite the passage of a cold front today, highs will still be a few degrees above normal.
A warm front was currently over south Mississippi. The warm front will lift north into central Mississippi this afternoon. Some scattered showers and thunderstorms are expected to form ahead of the warm front and some of this activity may move into extreme southern sections of Mid-South. As high pressure starts to build into the region, cooler air will move in as well. As high pressure continues to build into the region on Saturday, dry and cooler air will continue to move into the Mid-South.
A weak cold front has moved through the Panhandles today resulting in breezy northerly winds and slightly cooler conditions. Otherwise, today and tomorrow will remain tranquil as the next positive tilt trough moves southeast across the southern Rocky Mountains.
Current surface map places weak trof across western South Dakota. Flat upper level ridge builds across the Northern Plains Friday, with low level surge of warm air peaking Saturday.
Recent surface analysis shows a cold front exiting southeast Nebraska, extending northeastward into Wisconsin and southwest to the panhandle of Texas. Recent water vapor imagery shows a mid-level trough extending from Manitoba/Ontario southwestward to southern California and is expected to have little effect beyond some mid and upper-level cloud development. A dry forecast is on tap for the forecast period, with northwesterly winds today and Friday giving way to southwesterly winds Saturday and high temperatures in the 50's as a center of high pressure sets up to the south in Kansas.
The upper trough over the Dakotas will pass through srn WI by late morning or early afternoon and may provide enough subsidence to scatter out the stratus. Keeping temps mild tnt with highs in the lower to middle 40s for Fri. Models are trying to clear the clouds out quickly behind the trough overnight, but upstream obs suggest they will hold on a little longer. High temperatures should be similar to today, in the lower 40s. Many models are holding on to a warmer temp idea, so trended toward MOS guidance to get colder temps.
1057 PM CST Thu Nov 26 2020 (This evening through Friday) The above normal temperatures will come to an end by tomorrow, as a cold front works its way south across the area this evening and overnight. A better chance of rain will occur tomorrow night in advance of an upper level low approaching from the west.
214 AM CST Fri Nov 27 2020 Batch of stratocu behind the cold front will affect portions of eastern Kansas early this morning. Clouds will increase, especially across southern Kansas, late Saturday in advance of the southern stream upper low which will move out across the southern high Plains.
Early this morning, just a few passing mid-lvl clouds associated with the passage of an elongated mid-lvl trough overnight. Areas with higher elevations may not fall below freezing. Bended towards the higher raw model guidance, and pushed temperatures towards the 75th percentile or higher.
1021 PM CST Thu Nov 26 2020 A lovely Thanksgiving is ongoing with temperatures in the low to mid 50s this afternoon. However, a weak cold front is just making its way into northwestern Missouri and will drop southeast across the area this evening. High pressure will shift south on Saturday with a return to southerly flow allowing temperatures to rise into the low to mid 50s.
159 AM MST Fri Nov 27 2020 Northwesterly flow aloft will continue over the region today as an upper ridge builds over the western CONUS. Breezy westerly winds will develop at the surface due to high pressure to the south and west of the forecast area. Saturday will be the warmest day of the forecast as the flat upper ridge crosses the northern plains. Breezy to windy westerly downslope winds will help to warm temperatures, with some areas on the plains of western South Dakota, especially to southeast of the Black Hills, reaching the lower to mid 60s.
Should continue to see the stratus deck erode later this afternoon/evening as an upper level wave swings through the region, with overnight lows forecast to fall into the low to mid 20s thanks to efficient radiational cooling. Should see quite the warm up by Saturday though, as southwesterly flow helps afternoon highs climb into the upper 40s to low 50s along/near the Buffalo Ridge, while areas along/west of the James River climb into the mid to upper 50s. Unfortunately, the warm up will be short lived thanks to cold front diving across the region Saturday night.
The warmth will soon come to an end as a cold front arrives this evening. The upper low will move east across the TX Panhandle Saturday keeping chilly conditions in place and bringing a continued slight chance of showers mainly to the Permian Basin. While a few areas will fall below freezing Saturday morning, any precipitation will stay light with locations north and west of Seminole possibly seeing a wintry mix.
The fog/stratus was holding temperatures slightly warmer, but it has been slowly moving to the south and should diminish after sunrise as boundary layer mixing increases. Features of general interest include the cool front in northern Oklahoma, a short wave trough over Ontario with a positive tilt extending back to a closed low over northern Arizona, and a modest upper ridging pattern in the eastern Pacific.
410 AM CST Fri Nov 27 2020 A cold front has moved into northeast Oklahoma early this morning, and will sweep across the forecast area over the next several hours. Temperatures today will be a few degrees cooler than yesterday in the wake of the frontal passage.
09z/3am satellite imagery shows a band of mid-level clouds spreading into west-central Illinois ahead of an approaching cold front. Cold front currently along the Mississippi River will push steadily eastward.
454 AM MST Fri Nov 27 2020 Quiet weather continues in the short term as weak ridging or weak zonal flow is expected across Wyoming and the eastern high plains into western Nebraska Friday through the weekend. The upper level low over New Mexico is forecast to remain in that general area before ejecting east into the southern plains this weekend.
C-MAN stations show 10 to 15 knots with the highest wind speeds at Sand Key Light.
This gap wind will quickly shut off with the passing of a weak cold front, then northwest winds behind it will gust to 30 mph across southeastern Montana Saturday afternoon and evening. Temperatures will climb over the next 2 days, reaching the low 50s by Saturday afternoon.
343 AM CST Fri Nov 27 2020 The first of several cold fronts to affect the area the next seven days is currently moving through the area bringing modest northeasterly winds and cooler temperatures. An associated upper level trough dropping into the desert southwest will quickly move east into New Mexico today that will increase lift and precipitation chances tonight and early tomorrow for southeastern New Mexico, the Permian Basin, and the lower Trans Pecos. Forecast soundings in southeastern New Mexico show cooling throughout the column so the precip type will favor snow as opposed to freezing rain or sleet as surface temps near freezing, however QPF amounts will be very light anyway so nothing more than a light dusting should be expected.
Lower clouds will dissipate and shift east later in the morning as a cold front moves through. /Issued 410 AM CST Fri Nov 27 2020/ A cold front has moved into northeast Oklahoma early this morning, and will sweep across the forecast area over the next several hours. Temperatures today will be a few degrees cooler than yesterday in the wake of the frontal passage.
Clear skies are forecast throughout the short term with dry air advecting northeast from high pressure over the central Plains to Ohio Valley. However, low pressure traversing across southern Canada will increase southwest flow Saturday and bring a surge of warmer air to the Upper Midwest. 925 mb temps of +5 to +7C along I-94 should allow highs to reach the low to mid 50s with some mixing, full sun, and lack of snow cover. Even warmer 925 mb temps to the southwest with +9 or +10C possible along the Minnesota River.
A return to MVFR will occur tonight as winds diminish and the low cloudiness returns. /issued 337 AM CST Fri Nov 27 2020/ SHORT TERM (Now through Saturday): The most significant weather event during this portion of the forecast will be the slow approach and passage of a cold front. With the slow transition of the cold front from west to east, a large gradient in temperatures within Deep South Texas and the Rio Grande Valley is probable for tonight and tomorrow.
As such, have amended the High Wind Warning to start immediately. This will be another mostly dry system with the main effect being diminishing wind speeds and a wind shift to the north as a weak cold front pushes southward from Canada.
SHORT TERM (Now through Saturday): The most significant weather event during this portion of the forecast will be the slow approach and passage of a cold front. With the slow transition of the cold front from west to east, a large gradient in temperatures within Deep South Texas and the Rio Grande Valley is probable for tonight and tomorrow.
332 AM CST Fri Nov 27 2020 An upper trough axis currently extends from northern MN back through western NE and Colorado. Highs were warmer a few degrees to the lower 50s across the area which is in close agreement with the latest MET and MAV guidance. On Saturday, a cold front will drop into MT and North Dakota, with warmer H85 temperatures from 8-11C across western NE. With sunny skies and west winds 10-15 mph, favorable mixing with highs raised a few degrees into the lower 60s. A cold front will move across the area Saturday night.
/issued 343 AM CST Fri Nov 27 2020/ The first of several cold fronts to affect the area the next seven days is currently moving through the area bringing modest northeasterly winds and cooler temperatures. An associated upper level trough dropping into the desert southwest will quickly move east into New Mexico today that will increase lift and precipitation chances tonight and early tomorrow for southeastern New Mexico, the Permian Basin, and the lower Trans Pecos. Forecast soundings in southeastern New Mexico show cooling throughout the column so the precip type will favor snow as opposed to freezing rain or sleet as surface temps near freezing, however QPF amounts will be very light anyway so nothing more than a light dusting should be expected.
A storm system will move across the state today resulting in cooler temperatures and a few snow showers over the White Mountains. Saturday onward, it will remain dry with somewhat warmer than normal high temperatures. An upper level low over central AZ this morning will move into NM by evening. Elsewhere the main effect of this system will be cooler high temperatures this afternoon, on the order of 10-15 degrees cooler than yesterday. A passing winter weather system will bring scattered rain and snow showers to the White Mountains today with cooler temperatures areawide.
547 AM CST Fri Nov 27 2020 Batch of stratocu behind the cold front will affect portions of eastern Kansas early this morning. Clouds will increase, especially across southern Kansas, late Saturday in advance of the southern stream upper low which will move out across the southern high Plains.
Brief ridge of high pressure will be found across the region today bringing mostly dry conditions and mainly clear skies. The brief ridge breaks down tonight and brings dry northwest flow aloft. A clipper system and its associated cold front will approach the region Saturday.
315 AM MST Fri Nov 27 2020 Quiet weather continues in the short term as weak ridging or weak zonal flow is expected across Wyoming and the eastern high plains into western Nebraska Friday through the weekend. The upper level low over New Mexico is forecast to remain in that general area before ejecting east into the southern plains this weekend.
213 AM MST Fri Nov 27 2020 An upper ridge will bring warm temperatures and clear to partly cloudy skies to Northeast Montana today and tonight. Gusty NW winds are expected Saturday afternoon behind the cold front.
528 AM CST Fri Nov 27 2020 (Today and tonight) Cool high pressure, centered over Colorado this morning, will shift slowly east through tonight, and should be centered near southeast Kansas early Saturday.
09z WV satellite reveals an upper low churning eastward over AZ with this feature's former parent trough over CO extending northeast to the Great Lakes. This will allow northerly winds to continue, leading to temperatures a bit lower than yesterday with continued advection of relatively dry air in the lower levels. Friday night through Saturday evening, the aforementioned upper low moves eastward over the CWA.
Brief ridge of high pressure will be found across the region today bringing mostly dry conditions and mainly clear skies. The brief ridge breaks down tonight and bring dry northwest flow aloft. A clipper system and its associated cold front will approach the region Saturday.
High pressure aloft will expand east into Utah today and remain in place Saturday.
High pressure will build over the region today. Morning clouds will diminish around noon, leaving behind plenty of sunshine and increasing temperatures into the lower to mid 40s.
528 AM CST Fri Nov 27 2020 An upper trough axis currently extends from northern MN back through western NE and Colorado. Highs were warmer a few degrees to the lower 50s across the area which is in close agreement with the latest MET and MAV guidance. On Saturday, a cold front will drop into MT and North Dakota, with warmer H85 temperatures from 8-11C across western NE. With sunny skies and west winds 10-15 mph, favorable mixing with highs raised a few degrees into the lower 60s. A cold front will move across the area Saturday night.
High pressure ridge axis will remain across the area, producing light and variable winds. A weak east coast sea breeze will form into the afternoon as highs reach the low 80s across the area, with a few spots across the interior potentially reaching the mid 80s. (Previous Discussion) Weak high pressure ridge will extend from the Atlc across central FL resulting in light wind flow less than 10 knots.
258 AM PST Fri Nov 27 2020 Freezing conditions will occur each morning through the weekend across much of the San Joaquin Valley and Kern County Desert. Satellite water vapor imagery shows the upper trough that moved through yesterday is now over Arizona as upper ridging builds in behind it. A cold and dry air mass has settled over the district tonight with freezing temperatures expected across many areas by sunrise. The upper ridge will remain in control through the weekend with little change in conditions expected.
331 AM MST Fri Nov 27 2020 Northwesterly flow aloft will continue over the region today as an upper ridge builds over the western CONUS. Breezy westerly winds will develop at the surface due to high pressure to the south and west of the forecast area. Saturday will be the warmest day of the forecast as the flat upper ridge crosses the northern plains. Breezy to windy westerly downslope winds will help to warm temperatures, with some areas on the plains of western South Dakota, especially to southeast of the Black Hills, reaching the lower to mid 60s.
There are gusty wind over the ridges, particularly over the Coast Range, with poor overnight RH recoveries. An upper level ridge is in place over the west coast with weak zonal flow aloft. Winds in the valleys will be light, but above the inversions, dry easterly flow aloft will keep the ridges clear and relatively warm. The ridge axis will break to the east of the area later today.
1011 AM EDT Sat Mar 31 2018 Building high pressure will lead to a quiet day on Saturday with clear skies and seasonal temperatures.
935 AM EDT Sat Mar 31 2018 High pressure will build across the region today. Low pressure will track northwest of Maine tonight into Sunday. High pressure will cross the region today with mostly sunny skies. Low pressure will track northeast across Quebec province tonight, drawing a cold front toward the region late. Precipitation will then persist early Sunday in advance of the cold front. Low temperatures tonight will range from the mid to upper 20s north, to the lower 30s interior Downeast with mid 30s along the Downeast coast. Intense low pressure is expected to pass well to the north of the region early Sunday.
756 AM EDT Sat Mar 31 2018 High pressure will build across the region today. Low pressure will track northwest of Maine tonight into Sunday. High pressure will cross the region today with mostly sunny skies. Low pressure will track northeast across Quebec province tonight, drawing a cold front toward the region late. Precipitation will then persist early Sunday in advance of the cold front. Low temperatures tonight will range from the mid to upper 20s north, to the lower 30s interior Downeast with mid 30s along the Downeast coast. Intense low pressure is expected to pass well to the north of the region early Sunday.
1036 AM EDT Sat Mar 31 2018 High pressure and dry conditions through today. Dry high pressure will hold over the CWA through tonight. the region will be under the influence of zonal flow in the mid and upper levels and a stalled weak frontal boundary across the northern portion of the state in the lower levels.
Another day of above normal temperatures today despite the high cloudiness.
Showers and thunderstorms are expected to develop along and just ahead of the cold front generally along and to the Northwest of the Interstate 30 corridor through the day Sunday with the boundary becomes nearly stationary Sunday night with a slight drift into parts of South Arkansas while the Western part of the boundary shifting into North Texas allowing rain chances to dip lower across East and Northeast Texas.
The next chance for snow comes Mon afternoon through Tue morning as a lee cyclone moves into the Northern Plains. Tue would likely be coldest in the wake of departing system with fresh high pressure dropping south. Gusty winds should gradually shift from northwest then west and decrease late this evening and tonight as high pressure moves over the region.
/issued 252 AM CDT Sat Mar 31 2018/ Clear and cool conditions across the area this morning with high pressure situated over the region.
Model guidance shows inverted trof developing offshore during the day, with some low cloudinesss spreading over coastal waters toward our coastal counties in the afternoon, spreading further inland this evening. Cooler today with an east to west gradient of temps.
This will be ahead of a cold front. This morning, high pressure is keeping it dry. To the north, a cold front is barreling toward Arkansas, and should be on the doorstep by this evening.
Cold front dipping swd across OK/AR may get close enough to produce a few showers along and north of I-30, including the ktxk terminal after about 01/08z. Showers and thunderstorms are expected to develop along and just ahead of the cold front generally along and to the Northwest of the Interstate 30 corridor through the day Sunday with the boundary becomes nearly stationary Sunday night with a slight drift into parts of South Arkansas while the Western part of the boundary shifting into North Texas allowing rain chances to dip lower across East and Northeast Texas.