Aikyam-Lab/Synoptic-Bench huggingface dataset:
221 AM EDT Wed Oct 18 2017 Canadian high pressure building into the Mid-Atlantic states will bring several days of cool, dry weather to the Carolinas. Temperatures should begin to warm up this weekend as the high moves off the coast. The approaching trough will weaken as it impinges upon the area tonight but with little fanfare as the column is far too dry to support any sensible weather.
104 AM EDT Wed Oct 18 2017 An expansive area of high pressure was centered across the Ohio Valley and mid Atlantic states. A weakening cold front will drop across the Great Lakes on Thursday but dissipate as it reaches the local area.
Fall weather has finally arrived, as cooler air behind the surface front that moved through the region yesterday has settled into the area this afternoon. Mostly clear skies will promote excellent radiational cooling, allowing temperatures to fall into the low to mid 50s region wide, with upper 50s along the coast. At upper levels, a short wave trough will sweep overhead with little fan fair Wednesday night into Thursday with a ridge to follow. At the surface, high pressure centered over the Mid Atlantic states Wednesday will drift west to the Apalachians Thursday night. Overnight lows will range from the lower 50s over Southeast AL to the lower 60s across the Southeast Big Bend Wednesday night and just a couple of degrees higher on Thursday night.
Temperatures range from the mid to upper 30s in sheltered areas in the eastern Ozarks of southeast Missouri to the lower 50s in the prairie regions of northeast Missouri with a lot of 40s in between. A weak surface cold front will approach our region this evening but only make it as far as southern and eastern Iowa before stalling out. Thanks to continued southerly flow, the warming trend will continue with max temps in the low to mid 70s expected.
A warm air advection regime will begin today with south to southwest winds increasing in the low levels of the atmosphere.
132 AM EDT Wed Oct 18 2017 High pressure will remain in place over New York and Pennsylvania through the weekend with a gradual warming trend and dry weather. A weak trough / cold front will swing across Northern NY on Thursday, knocking temperatures down a degree or two. The atmosphere will remain much warmer than normal for the second half of October, with daily highs well into the 60s.
448 AM MDT Wed Oct 18 2017 Canadian upper trough is flattening the upper ridge as it moves eastward, pushing clouds into the region. The cold front will quickly cross the Dakotas this morning, producing gusty northwesterly winds across the SD plains. Upper ridge will rebuild for the end of the week, and southwesterly flow will help temperatures reach the 70s and 80s.
A weak disturbance will bring a slight chance of light showers to the higher elevations in southeast California this morning, and southern Nevada and northwest Arizona this afternoon and evening.
634 AM EDT Wed Oct 18 2017 High pressure will keep dry air and mainly clear skies over the region through the week. Temperatures will gradually warm as the high moves slowly east. Temperatures early this morning will drop into the mid 30s to the lower 40s. After a warmer day and a little more pressure gradient, lows tonight should range from the lower 40s in the low lying/sheltered locations to the upper 40s across higher terrain and our northwest zones. On Thursday, southwest to west winds ahead of the front along with sunshine will boost highs into the lower 70s.
121 AM EDT Wed Oct 18 2017 Dry high pressure with cool mornings and warm afternoons, with temperatures moderating through the weekend.
Upper high pressure and dry, westerly flow aloft will continue over southern Colorado through Wednesday with more unseasonably warm weather expected. a weak trough over Utah will move quickly across the area on Thursday.
234 AM EDT Wed Oct 18 2017 Dry high pressure with cool mornings and warm afternoons, with temperatures moderating through the weekend.
At northern terminals, light southwest surface winds will shift to light northwest after 12z Wednesday and then to east by 18z as a minor perturbation aloft disrupts the surface pressure pattern along the otherwise nearly-stationary low pressure trof over eastern New Mexico. Quiescent weather pattern is in store for the combined Panhandles through early Thursday as a ridge traverses the area through that period.
345 AM EDT Wed Oct 18 2017 Quiet weather pattern through the upcoming weekend as ridging aloft and at the surface reside over the region for the most part.
Tonight this system will push east out over the Canadian plains to Manitoba, dragging a cold front across the Dakotas overnight. Wednesday is of bigger concern, with the cold front shoving east across the forecast area during the day. Mixing techniques imply that RH values could dip into the lower 20s tomorrow afternoon over parts of northern Minnesota, with higher values farther east. The area of high pressure will continue to dominate the region through the end of the workweek. It will be cooler behind a weak front on Thursday with highs mainly in the 60s.
Tomorrow, a fast-moving upper level trough will enter British Columbia and track into central Manitoba by mid-day tomorrow. This will push a weak boundary into our CWA; the only impact to our region will be a lack of wind tomorrow afternoon as the trough axis moves through. Highs tomorrow should reach the lower 80s, and will result in another tranquil, fall day. Temperatures will be a few degrees cooler than Wednesday, reaching the upper 70s.
157 AM MDT Wed Oct 18 2017 Latest upper air analysis shows a short wave trough moving onto the Plains. At the surface a cold front was following the short wave trough over Central Wyoming. Today a weak cold front will move through the forecast area. The north half will have more time in the slightly cooler air today. Behind the cold front northerly winds will become breezy during the late morning and into the early afternoon.
252 AM MDT Wed Oct 18 2017 Canadian upper trough is flattening the upper ridge as it moves eastward, pushing clouds into the region. The cold front will quickly cross the Dakotas this morning, producing gusty northwesterly winds across the SD plains. Upper ridge will rebuild for the end of the week, and southwesterly flow will help temperatures reach the 70s and 80s.
The warm front moves through on Wednesday however most of the precipitation will be to our north in Washington. Strong cold front moves through on Thursday. Bkn 100-200 overnight with approaching warm front. A Pacific cold front continues to move across the region at the moment. This next system's cold front will move into and across the region Thursday.
Expect a bit warmer day as a result compared to yesterday with temperatures generally running either side of 80 degrees for afternoon highs. This warming trend will continue through the end of the work week as weak upper ridging builds in later today through Thursday.
255 AM CDT Wed Oct 18 2017 Light and variable surface winds are forecast today as the area remains between a large area of high pressure across the eastern U. NAM/WRF model showing a warmer 850 mb air overspreading far sw KS today accountable for models forecasting a slightly warmer high today in the low 80s. This still should be pleasant warm fall weather with dew points remaining in the low 40s west and northwest to near 50 in south central Kansas.
Lower to mid level ridging maintains its hold tonight into Wednesday morning. Initially, it produces slightly warmer, near normal highs during the day. Then, increasing moisture leading to stratus formation with much warmer lows at night.
637 AM EDT Wed Oct 18 2017 A passing upper-level trough bringing a few high clouds into Eastern KY early this morning. At the surface, high pressure is anchoring over the Mid-Atlantic states and will ridge across the Appalachians through Thursday. By then we also will have ridging aloft, making for a couple of dry days, with a little warmer temperatures each day.
Under the influence of high pressure on the surface and aloft, a very dry air mass will remain through mid week and the early part of late week. More Southerly low level flow will return during Wednesday and Wednesday night, but on Thursday high pressure will return increasing moisture. /issued 316 PM CDT Tue Oct 17 2017/ High pressure still reigns across the region with continued very dry air and not a cloud in the sky.
347 AM EDT Wed Oct 18 2017 High pressure will keep dry air and mainly clear skies over the region through the week. Temperatures will gradually warm as the high moves slowly east. Temperatures early this morning will drop into the mid 30s to the lower 40s. After a warmer day and a little more pressure gradient, lows tonight should range from the lower 40s in the low lying/sheltered locations to the upper 40s across higher terrain and our northwest zones. On Thursday, southwest to west winds ahead of the front along with sunshine will boost highs into the lower 70s.
Temps overnight will vary from north to south with the cooler, drier air in place across the Nature Coast. Expect lows in the lower 60s up north with lower 70s across SW Florida. High pressure will build into the mid-Atlantic region and remain in place through the rest of the week, with northeast winds increasing to cautionary or advisory levels for all of the coastal waters.
Tonight and Thursday a strong trough will develop over Arizona and begin drawing moisture north from Mexico.
412 AM EDT Wed Oct 18 2017 High pressure will result in dry weather and a warming trend into the weekend. Dry weather continues through the period as high pressure remains in control. Eastern CONUS ridge will persist through the weekend.
A weak trough axis will move into the coastal waters overnight. As this occurs, a weak short wave trough will move through the Big Bend of Texas and northern Mexico tonight and move into the Brush Country Thursday.
338 AM CDT Wed Oct 18 2017 Strong cold front will move east through the forecast area this morning and midday. Otherwise the highest 850 mb winds do retreat to north of the border during the late morning and midday when the best mixing occurs and mixing layer goes to 840-820 mb.
244 AM EDT Wed Oct 18 2017 A passing upper-level trough bringing a few high clouds into Eastern KY early this morning. At the surface, high pressure is anchoring over the Mid-Atlantic states and will ridge across the Appalachians through Thursday. By then we also will have ridging aloft, making for a couple of dry days, with a little warmer temperatures each day.
Key West radar is showing moderate showers along the lower Keys and a large swath of moderate to heavy showers in the waters to the southwest between the lower Keys and Cuba. The evening sounding at Key West found a fairly saturated profile with decent cape in the lowest 3 km. through A combination of favorable upper dynamics along the base of the mid to upper trough, confluence in the boundary layer, as well as ample moisture, should result in continued showers over the area until the trough axis passes to the east. The trough should push through by Wednesday early evening with rain chances decreasing thereafter.
202 AM CDT Wed Oct 18 2017 200 AM CDT High pressure is still stretched from central Texas northeast through the Ohio valley and into the mid Atlantic. A second and stronger low pressure system will slide by north of the Canadian border.
Temperatures will climb into the mid 70s across the lower Snake Plain with 60s for much of the rest of SE Idaho both today and tomorrow.
304 AM EDT Wed Oct 18 2017 High pressure remains in control of the weather for much of the rest of the week into the weekend.
345 AM EDT Wed Oct 18 2017 High pressure will maintain dry weather and warmer than normal temperatures through the weekend. High pressure builds south of New England today, resulting in plenty of sunshine and milder W/SW flow with highs in the 60s and lower 70s. Highs should end up a few degrees warmer than today, mainly in low to mid 70s, except 60s near south coast, Cape Cod, and Islands. This will fall a bit short of tomorrow's record highs which are in the low to mid 80s (BOS 84 in 1945, PVD 83 in 2016, BDL 82 in 1963, ORH 81 in 1963).
424 AM CDT Wed Oct 18 2017 Today and Tonight: Continued dry and slightly warmer. Early morning surface analysis had a 1028mb high centered over the central Appalachians and ridging back across the Gulf coast states. This will lead to a continuation of dry weather and warmer temperatures today and tonight. Under clear skies and a near calm wind again tonight, strong radiational cooling of our dry airmass will lead to morning lows slightly cooler than normal.
238 AM EDT Wed Oct 18 2017 High pressure remains over the Mid Atlantic region through the remainder of the week with temperatures gradually moderating.
636 AM EDT Wed Oct 18 2017 Aviation A large area of high pressure over the Central Appalachians will dominate our weather pattern over the next few days. A weakening cold front moves in from the northwest. Models are in decent agreement in showing the cold front currently in the Upper MS Valley to track southeast today and into the region tonight. Warm condition will prevail today a the low level thermal ridge moves in.
616 AM EDT Wed Oct 18 2017 A weak cold front will cross the region early this morning. High pressure will build this afternoon and move east tonight. Another cold front will cross the region Thursday night.
The pressure rises will be sliding from north through east of us, but will turn the low level winds on the plains around to the north and then east. a weak southwesterly flow aloft will be over CO ahead of the next Pacific trough.
/22/ High pressure continues its influence over our area, as evidenced by clear skies and relatively calm winds throughout the region. Prior discussion below: Tonight and Wednesday: Strong high pressure ridging will prevail over the area through the period. For tonight, strong radiational cooling and light winds will allow for temperatures to fall into the low/mid 40s across the area.
SHORT TERM (Now through Thursday): Broad 500 mb ridging overhead will shift east over the central Gulf of Mexico by Thursday. The higher dew points, along with light winds and mostly clear skies may allow some patchy fog to develop across the ranchlands and brush country overnight. High temperatures Thursday will range from the low to mid 80s near the coast to the upper 80s to around 90 degrees across the west.
High pressure will bring improving conditions for the weekend.
115 AM EDT Wed Oct 18 2017 High pressure will result in dry weather and a warming trend into the weekend. Dry weather continues through the period as high pressure remains in control. Eastern CONUS ridge will persist through the weekend.
Another fine day of flight weather expected today and tonight with little moisture in the atmosphere on the whole with subsident air within a lower level ridge pattern.
519 AM EDT Wed Oct 18 2017 High pressure will result in dry weather and a warming trend into the weekend. Dry weather continues through the period as high pressure remains in control. Eastern CONUS ridge will persist through the weekend.
Late morning surface temperatures are largely in line with going expectations and so we held with the existing forecast even though some rapid-refresh guidance would suggest highs today could end up being slightly cooler. A cold front will usher in another cold high Sunday. Although the Superblend did not produce much wind, believe the mixing and gradient flow with the high will support at least 10 to 25 mph winds Sunday afternoon.
In terms, of tonight think models are in good agreement in seeing another area of low pressure ride north and provide several more shots of rain across portions of eastern Kentucky. The coldest temperatures tonight will reside in the lower 40s north of I-64 tonight compared to lower 50s south of the Mountain Parkway.
317 PM CST Sat Feb 10 2018 Generally fair skies and light westerly boundary layer flow across the northern plains region tonight and early on Sunday will see a transition back to a northwest flow and overall cooler pattern after midday on Sunday. A weak surface cold front will accompany the passage of that H5 trof through the FA late Sunday forenoon. Westerly sfc flow will contribute to substantial warming on Wed; our current fcst of from freezing to near 40 may be a tad too cool when all is said and done.
Area radars show returns over the southeast half of the state including much of east central Wisconsin as a weak mid level trough passes. Clouds will then clear out today in the wake of the weak trough with high pressure dropping southward into the Central Plains. A short wave trough over the northern rockies this morning is progged to drop into the central plains tonight. The slightly deeper trough over the central plains may allow the RRQ region of the upper jet to lift more north with the 850-700 mb frontal boundary becoming more southwest to northeast in orientation.
1020 AM MST Sat Feb 10 2018 Regional surface analysis placed the Arctic cold front from southwest WY to west-central CO to northeast NM. Very cold air mass with center of Canadian ridge from northeast MT to central SD.
Highs still on track to rise into the single digits across the north and up into the lower teens nearer the South Dakota border.
Precip has ended across the area as a weak wave and associated surface cold front has exited to the southeast. Seasonably cool high temperatures in the upper 40s/around 50 will prevail for the lowlands, with mid 30s to lower 40s for the mountains.
A few surprise lows of -10F or colder could develop given arctic high pressure, clear skies and very dry air still in place. Strong arctic high pressure builds across the northern Plains on Sunday.
1207 PM CST Sat Feb 10 2018 Winter Weather Advisories for a light glaze from freezing drizzle early this morning in southeast Kansas and for a couple inches of snow in northern portions of central Kansas this evening. While the frontogenetic forcing does not look overly impressive, the transient lift just ahead of the mid and upper level trof axis and larger snow ratios look to support up to two inches of snowfall generally north of I-70. Therefore plan to issue an advisory for Russell/Lincoln counties with this forecast issuance, with amounts tapering to an inch or less perhaps as far south as the highway 50 corridor, with little more than a dusting expected as far south as highway 54 through early Sunday morning.
VFR conditions are pretty much being found everywhere as the lower ceilings and snow moves east over the lake with only some higher sun-filtering cirrus through the bulk of the afternoon and early evening until the next wave of lower ceilings and visibilities enters late tonight around Sunday 08-10z. The far southeast corner, around Kenosha, will see the higher snowfall rates through about 8am. Considerable amount of DAVA/drying noted in the wake of the trough. Weak thermal ridging noted.
/Issued 356 AM CST Sat Feb 10 2018/ The cold front which moved through the Panhandles yesterday morning was located across New Mexico up against the front range of the Sangre de Cristo and Manzano mountain ranges. Northern stream trough forecast to push southward out of the northern and central Rockies and the northern and central Plains states today and will approach the Panhandles later today and tonight.
1154 AM CST Sat Feb 10 2018 Not much change with respect to the large scale pattern with a broad upper trof still in control over the CONUS along with an amplified ridge situated off the west coast. At the sfc, very strong high pressure/accompanying arctic airmass has dropped into the northern Plains.
354 PM CST Sat Feb 10 2018 Focus remains on the winter weather we are experiencing this weekend, but there is an expectation of warmer weather this coming work week. That said, reports from surface observations show that freezing drizzle may still be the dominate precipitation type this afternoon across southern and central Missouri even when mixed with snow.
Summary: High pressure today gives way to increasing clouds and a chance of snow for Sunday. A ridge of high pressure was found across the Northern Plains and much of the Upper Midwest early this morning. While the forecast wind chills have nudged warmer with the lack of radiational cooling, still think there's a good chance we'll see advisory criteria readings before 10 AM. An Arctic cold front will drift south out of the Canadian Prairies and northwest Ontario during the day. A positively tilted short wave trof will move through the forecast area Sunday night. At the surface, dry high pressure will be building into the area.
Our flow aloft turns westerly with warmer temperatures as the cold air is scoured mostly to the east.
A cold front is moving south through the region late this morning with winds expected to switch to the north at KAUS next hour along with KSAT/KSSF 19-21Z. The shallow cold air and lingering light drizzle could result in areas of light freezing mist/drizzle at the surface and icing in the lowest saturated 3000ft layer. The cold front has moved in northern Llano, Burnet, and Williamson counties, and will continue to progress south ahead of early forecasts. The result should be scattered, light precipitation, but of course, concern about freezing/frozen precipitation.
Steady stream of rain continues to overspread the area, although a slight weakening and veering of the low-level jet has allowed precipitation to taper off somewhat across northwest portions of Middle TN and focus much of the rain across areas further east. Cold front to our NW will slowly drift SEWD into mid state thru 11/12Z providing a shift to NWLY sfc winds CKV/BNA 10/18Z-11/12Z.
Highs today will be in the low to mid teens for most locations. Another chilly night is expected tonight as lows will likely drop into the low to mid teens below zero inland with single digits below zero expected near the shoreline. Moderating conditions from Tue into Wed will give way to another intrusion of arctic air from Thu into Fri as the trough again drops into the n cntrl CONUS.
A warming trend is forecast through the early part of the week as the remnant arctic airmass modifies significantly and lee troughing redevelops across eastern Colorado.
222 PM CST Sat Feb 10 2018 A strong cold front has stalled this afternoon just west of the Pecos River. There is still an opportunity for some light freezing drizzle overnight across the eastern Permian Basin, but impacts are expected to remain minimal.
A low pressure system will bring a chance of snow to the region on Sunday and Sunday night. The models show this area of moisture gradually lifting into the afternoon but just enough moisture may linger combined with daytime heating for some cloud cover to persist especially over the higher terrain.
The cold front is approximately along a Junction to Fredericksburg to San Marcos to La Grange line at 230 pm. The weak lift and high saturation suggest drizzle instead of rain, and a warm (nearly 10C maximum) and deep layer above the near- surface cold layer suggest freezing on ground contact vs. With the ground relatively warm to begin the evening, we think the most likely evolution is drizzle starting around midnight, then mixed with freezing drizzle, the later primarily accumulating on surfaces without ground directly underneath them, such as bridges, overpasses, tree branches, and picnic tables. No freezing drizzle is expected in metro San Antonio.
Warmer/drier air moving in from the west may lead to VFR this afternoon at LRD, with brief periods of VFR toward ALI-CRP this afternoon. ALI should also see conditions deteriorate this evening, with LRD experiencing the lower conditions roughly after 06Z. A cold front will push through the region shortly around or after 12Z with northerly winds developing.
242 PM EST Sat Feb 10 2018 Upper air pattern consists of a 500 mb trough across the central U. This trough amplifies over the cewntral U. In the extended, GFS and ECMWF show a 500 mb closed low off the CA coast with zonal flow across most of the U. Cold air comes into the area again 12z Thu with a trough that digs into the upper Great Lakes. This cold air and deeper amplified trough remain through Saturday.