Aikyam-Lab/Synoptic-Bench huggingface dataset:
957 AM EDT MON JUN 13 2016 A weak cold front continues to push southward through the CWA this morning. Drier and slightly cooler air will spread across the area behind the front.
1031 AM EDT MON JUN 13 2016 A weak cold front will drop south through the area today and dissipate tonight.
932 AM EDT MON JUN 13 2016 A cooler and drier air mass will prevail over the region today, in the wake of a backdoor cold frontal passage early this morning. A welcomed change and refeshing treat is in store today, behind a backdoor cold front that advected dry significantly cooler, drier and stable air south into central NC overnight. Expect highs Tuesday rebounding into the lower 90s, with lows Tuesday night rebounding into the lower to mid 70s.
Weak frontal boundary/trough moving through the southeast U. has shifted surface atlantic ridge axis south of the area. It will be quite hot today with highs reaching the low 90s along the coast to mid 90s over the interior.
A cool upper trough will slowly cross the Great Basin today. Weak high pressure will follow briefly tonight into Tuesday morning. A dry southwest flow is forecast to develop beginning Tuesday afternoon, with strong high pressure moving back in for the upcoming weekend. An elongated trough is moving through the southwestern CONUS this morning, helping initiate scattered showers and thunderstorms across portions of Utah and southwest Wyoming. Convective activity will increase across much of the area this afternoon as the trough continues to slide across the CWA. Isolated thunderstorms migrating off the higher terrain could impact the terminal with gusty and erratic winds between 21Z and 02Z. The passage of the upper level trough around mid-evening will bring drier and more stable air to northern Utah with the threat for showers/thunderstorms ending by late evening.
This evenings sounding shows a large dewpoint spread in the lower 3000 feet and even drier in a layer up to around 10k feet.
310 PM PST Sat Dec 31 2016 Low pressure center off the Central California coast will bring in San Joaquin Valley rain and snow to the Kern county mountains tonight.
Caveat is if the plume of mid level clouds remain dense, and the late evening update may ease of the lowest vsbys if the 00z runs suggest the mid cloud layer to remain intact.
The upper trough in southern British Columbia is still on track to bring increasing clouds and a chance for light snow as it digs into the Pacific Northwest on Sunday. A weak low pressure system will bring MVFR snow showers to the region late Sunday morning.
Temperatures along the Keys island chain are in the low to middle 70s, and winds are out of the southeast between 10 and 15 mph, and occasionally gusty.
1006 PM EST Sat Dec 31 2016 A weak cold front over Ohio will cross the area Sunday morning.
High pressure located across the southeast CONUS continues to dominate the weather across the region. This high pressure has yielded a New Years Eve day with dry weather and abundant sunshine, with an occasional breezy southeast flow. High pressure to the north will continue shifting eastward into the western Atlantic, keeping a southeast flow in place across the region.
708 PM EST Sat Dec 31 2016 A weak cold front and showers will move east tonight. High pressure is forecast to provide mainly dry weather on Sunday.
The cold front will produce a subtle wind shift to the northwest then north tonight. For tonight through Sunday, weak cold air advection ensues with the passage of the aforementioned cold front. A closed upper low develops over Washington/Oregon Sunday, as a southwest flow begins into North Dakota.
1025 PM EST Sat Dec 31 2016 A warm front will bring light snow to the north country this evening and tonight.
Associated clouds may keep low temperatures tonight a little warmer than the models indicate, but as the system moves out Sunday afternoon skies will become mostly sunny with afternoon temperatures rising into the middle to upper 40s.
602 PM CST Sat Dec 31 2016 It's been a notably cooler, but still pleasant start to the weekend today. The surface cold front accompanying this northern disturbance pushed through the CWA last night, and currently lies from northern MI into TX. Cooler high pressure has settled into the area, keeping winds light and at times variable this afternoon, with temps in the 30s/lower 40s (compared to the highs yesterday in the 50s for most locations).
A trough of low pressure extended from near HCO to west of FAR. The trough will move into eastern MN by 12Z Mon. Will increase the low temp for tonight. Upper level ridge axis will be to the west.
Western Atlantic high pressure ridge providing a milder and increasingly moist SE to S wind flow across east central FL. Highs should reach near 80 along the coast and the lower 80s for the interior. The flow pattern over the srn tier of the Conus will remain somewhat progressive in nature through midweek as a broad cyclone evolves over the Grt Lakes and Oh Valley to the Gulf of Mex. An airmass change ascd with a passing front around late Wed will bring a shot of cooler air late in the workweek with slightly cooler than normal temps. Weak high pressure influence across the area into the early part of the week, then an approaching cool front and eventual passage on Wed.
CVKING Cold front has made it through to a Columbia to St. As the high moves eastward on Sunday, east to southeast flow will return. Browning The ever expansive upper level low/trof across the northwest CONUS will continue to be stretched and eventually break into two seperate pieces with one being discarded across the Pacific Northwest while the other low deepens as it moves east across the Northern Plains and into the Upper Midwest.
Given the high moisture content of the airmass, locally heavy rainfall will continue to be possible through the night.
906 PM EST Sat Dec 31 2016 A cold front over entering Ohio from the northwest will slide through the Mid-Atlantic Sunday morning.
Shallow cold front has stalled generally along a line from KDFW northwestward to KRUE and KFAM.
Expect this to continue through Sunday with temperatures a little warmer across the CWA Sunday.
721 PM EST Sat Dec 31 2016 A weak cold front will return rain and snow chances to the forecast through the evening. Building high pressure should result in dry weather Sunday. Critical thicknesses, model soundings, and morning upper-air data indicate mainly snow should fall N of I-80 and in the higher terrain SE of PIT, with rain changing to a mix of rain and snow S of I-80. Areas N of I-80 and the higher terrain SE of PIT could see around an inch of snow. Dry weather is expected Sunday under building high pressure. A brief period of freezing rain is possible in the usually colder locations N of I 80 but confidence of occurrence remains too low for an HWO inclusion at this time.
Blowing snow issues have improved over the west as temperatures have risen to around freezing. Forcing increases behind the boundary with upslope and over running, as a deep upper trough drops into the Pacific Northwest.
High pressure continues to build into the central High Plains behind a cold front that pushed through southwest Kansas early this morning. Northerly winds were finally subsiding across the area as the center of the high moves in. The winds will gradually become southerly tonight as the high pressure retreats to the east. A warm front will be lifting back into far southern Kansas with warmer daytime temperatures into the mid 50s to near 60 from Ashland to Elkhart and Johnson. The warm front slowly lifts a little farther north Sunday night.
Light and variable winds will become south and increase to 10 to 15 knots later tonight and 15 to 20 knots Sunday as high pressure continues to move offshore and the gradient increases out ahead of the next cold front.
Low clouds oriented roughly northwest to southeast over the middle of the CWA were stubbornly hanging on and keeping temperatures down along the Highway 95 corridor. Similar to yesterday, most of the high resolution models keep the precip associated with the incoming storm south of Las Vegas overnight. The models continue their overnight trend of retrograding all or a piece of this low offshore as the southern part of a Rex block by midweek, which is a dramatic shift from yesterday.
401 PM CST Sat Dec 31 2016 Upper level low currently near the four-corners will continue to open up and weaken as it approaches West Texas this evening. This will be in response to surface cyclogenesis over eastern Colorado in advance of another upper level trough approaching the region from the southwest. The upper low off the central California coastline this afternoon will be the first weather-maker for the new year as it opens up and moves across West Texas as a fairly tight, negatively tilted trough Sunday night.
Cold front over the Midwest this afternoon and pulling up the light rains across the region is in the process of washing out. Pressure gradient bringing this morning's winds will loosen quickly as high pressure moves by to our north.
Low pressure center off the Central California coast will bring in San Joaquin Valley rain and snow to the Kern county mountains tonight.
However, we will see a cold front associated with the clipper drop down from the NW. Ahead of this front, we'll see a thermal ridge work up into the area tonight. This thermal ridge combined with mid level cloudiness coming in from the Dakotas will result in steady temperatures tonight. This feature is currently down in the four corners and will be heading our direction as it begins to get ingested into the deep, positively tilted northern stream trough that will be working into the NW CONUS Sunday.
Southeast Arizona is between weather systems this evening, with the previous system ejecting eastward across northern New Mexico and the next upper low barreling south-southeast near the California coast. Thereafter, as the the upper low moves eastward along the international border on Sunday, a well defined band of showers will move from the western deserts in the early morning and then rapidly shift eastward into the Tucson area late in the morning and then into eastern areas in the early afternoon before tapering off from west to east.
Meanwhile a large upper low meanders across coastal California, bringing rain and unsettled weather to the west. For the rest of New Years Eve, expect fantastic weather! Temperatures will hold steady in the low to mid 70s most areas this afternoon. On New Years Day, as surface ridging remains to our east, low level southeasterly flow will continue, with increasing humidity. This combined with upper ridging building in from the south will allow for much warmer temperatures. Highs will rise into the low to mid 80s area wide.
446 PM MST Sat Dec 31 2016 An area of deformation and mid-level frontogenesis on the north side of a closed low over New Mexico will keep a band of rain and snow showers over extreme SE UT and Montezuma county in SW CO this evening. By midnight this feature should weaken as it moves over the southern extent of the San Juan mountains and the higher elevations north of Durango and Pagosa Springs. Sunday and Sunday night are somewhat "in-between" days, waiting for the next stronger trough to affect the area. Another closed low is projected to travel just south of the U. and Mexico border with a weak trough and deformation zone stretching from the four corners north through central CO.
An upper level low in northwest WA is moving southeast.
/issued 416 PM CST Sat Dec 31 2016/ Upper level low currently near the four-corners will continue to open up and weaken as it approaches West Texas this evening. This will be in response to surface cyclogenesis over eastern Colorado in advance of another upper level trough approaching the region from the southwest. The upper low off the central California coastline this afternoon will be the first weather-maker for the new year as it opens up and moves across West Texas as a fairly tight, negatively tilted trough Sunday night.
Temps Sunday should be a few degrees warmer than today. Pressure falls from approaching upper system over TX will ramp up the southerly flow Sunday night, lifting the surface front back to the north and bringing in warmer and more moist air.
959 PM EST Sat Dec 31 2016 A weak cold front and showers will move east tonight. High pressure is forecast to provide mainly dry weather on Sunday.
this should not last long as the HRRR/WFR/GFS remain in good agreement with the FG spreading farther W into Ecntrl TX as weak sfc ridging continues to build SW into Srn AR/Nrn LA.
A weak cold front has moved into the Permian Basin which is perhaps aiding rain development.
The main concern for this period is the low chance for precipitation which is more likely to impact KAMA rather than any other site. There is the small chance for some of this precipitation to be freezing rain. /Issued 334 PM CST Sat Dec 31 2016/ An upper trough will track east across the Four Corners region and southern Rockies tonight. Brief short wave ridging will take place on New Years Day but then another southern stream upper trough should pass just south of the Panhandles Sunday night.
416 PM CST Sat Dec 31 2016 Upper level low currently near the four-corners will continue to open up and weaken as it approaches West Texas this evening. This will be in response to surface cyclogenesis over eastern Colorado in advance of another upper level trough approaching the region from the southwest. The upper low off the central California coastline this afternoon will be the first weather-maker for the new year as it opens up and moves across West Texas as a fairly tight, negatively tilted trough Sunday night.
548 PM CST Sat Dec 31 2016 Cold front is sweeping through Central Illinois this afternoon, with winds coming around to more northwesterly and tempering the diurnal swing for the Midwest. the weather should remain quiet and cooler, with lows dropping into the 20s. Models continue to mix in enough dry air to further erode the clouds as the high pressure ridge axis drifts across the region overnight.
522 PM CST Sat Dec 31 2016 High pressure will move across the area tonight keeping the weather quiet overnight. A weak upper level disturbance will also be moving across the area Sunday but forecast soundings show the lower levels of the atmosphere remaining dry.
The lower levels are saturated and temperatures are expected to hold fairly steady tonight. Chattanooga Airport, TN 42 52 50 63 / 80 50 60 80 Knoxville McGhee Tyson Airport, TN 43 53 48 62 / 70 60 50 70 Oak Ridge, TN 41 50 48 61 / 70 50 40 70 Tri Cities Airport, TN 39 52 45 61 / 60 50 50 70.
Warm front in the vcinity of southern Arkansas will meander around, with the cold front over northern Arkansas hanging up tonight over the region. Cold front now approaching northwest sections of the state will reach southern sections by late evening.
A cold front, currently stretched from about STL-SGF, will continue its dive southeastward into the PAH FA tonight.
Would not be surprised if patchy freezing drizzle also develops in our eastern CWA as well.
/Tonight through Sunday/ Relatively quiet tonight into New Years Day with ridging sliding across just south of the state tonight and increasing warm advection on Sunday.
1011 PM EST Sat Dec 31 2016 A weak cold front will move east across the state overnight bringing a few snow showers to the central and western mountains.
Sunday and Sunday evening look dry, with seasonably chilly temperatures, as high pressure builds across the region.
522 PM CST Sat Dec 31 2016 /00Z TAFS/ A cold front stretched from Far West Texas to Robert Lee to Ballinger to just south of Coleman. A weak cold front has moved just south of I-20 at 3 PM and is expected to weaken and dissipate overnight.
The wave over the southern rockies will eject northeastward across the central Plains Sunday, while the upstream upper low digs into northern Mexico.
Temperatures will warm slightly with late day highs reaching in the low to mid 50s.
Cold front is sweeping through Central Illinois this afternoon, with winds coming around to more northwesterly and tempering the diurnal swing for the Midwest. the weather should remain quiet and cooler, with lows dropping into the 20s. Models continue to mix in enough dry air to further erode the clouds as the high pressure ridge axis drifts across the region overnight.
the bigger concern will be with the secondary strong upper level low currently over California.
/issued 444 PM CST Sat Dec 31 2016/ SHORT TERM (Now through Sunday Night): Considerable cloudiness remains over the forecast area as moist southwest flow persists aloft in response to an upper trough approaching from the west. However, will probably see more breaks in the clouds Sunday afternoon as low level southerly flow ushers in a warmer airmass.
An area of deformation and mid-level frontogenesis on the north side of a closed low over New Mexico will keep a band of rain and snow showers over extreme SE UT and Montezuma county in SW CO this evening. By midnight this feature should weaken as it moves over the southern extent of the San Juan mountains and the higher elevations north of Durango and Pagosa Springs. Sunday and Sunday night are somewhat "in-between" days, waiting for the next stronger trough to affect the area. Another closed low is projected to travel just south of the U. and Mexico border with a weak trough and deformation zone stretching from the four corners north through central CO.
557 PM EST Sat Dec 31 2016 High pressure will move across the area tonight and Sunday providing fair weather.
Temperatures are currently in the lower to middle 50s under mostly sunny skies. Lows tonight will drop into the upper 20s to the lower 30s.
SHORT TERM (Now through Sunday Night): Considerable cloudiness remains over the forecast area as moist southwest flow persists aloft in response to an upper trough approaching from the west. However, will probably see more breaks in the clouds Sunday afternoon as low level southerly flow ushers in a warmer airmass.
Cold front remains well northwest and with rainshowers expected to decrease late this evening. Moisture out ahead of an approaching cold front will bring widespread light shower activity and drizzle to the mid state through 12z or so. The aforementioned boundary will stall west of the area and thus, the low clouds and reduced vsbys will continue through the taf pd.
Drier air continues to filter into the region this evening behind cold front.
1024 AM EDT Sat Sep 24 2016 A weak cold front will push south across the Ohio River today. High pressure will build into the region tonight, and will remain across the area on Sunday.
614 AM CDT SAT SEP 24 2016 An upper level trough presently over the eastern Rockies will push out onto the Northern Plains for today and tonight, bringing increasing rain chances to our area during the period. A surface cold front is currently analyzed through west central SD and NE, with showers and thunderstorms streaming northward along this boundary. Cooler air will begin to filter into the area behind the boundary, and looking at lows in the lower to mid 50s overnight. Large closed upper level low continues to swing northeast into south central Canada on Sunday, transitioning the region into cool and brisk northwest flow.
Overnight lows fell into the low to mid 60s with mostly clear skies and high pressure overhead. JMS (Issued 635 AM CDT Sat Sep 24 2016) For 12Z TAFs: VFR conditions are expected to prevail across N AL/S Middle TN for the next 24 hours as a high pressure system dominates the weather.
1206 PM EDT Sat Sep 24 2016 High pressure will maintain dry weather and seasonal temperature for the weekend. Cold front is completing passage across the Upper Ohio Region. Subsidence and dry advection with building high pressure will erode clouds as the afternoon progresses.
743 AM EDT Sat Sep 24 2016 High pressure will move down from Hudson Bay into the northeastern states this weekend.
/issued 426 AM CDT SAT SEP 24 2016/ Upper level pattern continues to become more amplified as the ridge axis over the SE CONUS now extends well north into parts of the Midwest. Meanwhile, the upper trough out west is positioned along the Rockies with little movement in the past 12 hours due to the presence of the dominant ridge. Slightly improved odds will be found across the western portions of the area as the trough approaches from the west, but still only looking at low chance pops at best through Sunday afternoon. By Sunday evening, the trough will be well out into the Plains and the associated cold front will be knocking on the door across our northwest zones along the I-30 corridor.
746 AM EDT Sat Sep 24 2016 Weak high pressure will extend over the area from the west today.
Additional storms will form later tonight in northern Oklahoma as a cold front moves across the area. /issued 315 AM CDT SAT SEP 24 2016/ Part of a strong western trough/low will move across the northern Rockies and Plains today. Meanwhile, the trough moving across the northern Plains will continue east into the Great Lakes region. This will help push a cold front across Oklahoma and north Texas.
Therefore, will see the low clouds dissipate from south to north during the morning with some sunshine in most areas by midday.
903 AM EDT SAT SEP 24 2016 Update High pressure north of Lake Huron will provide fair weather today and through most of Sunday.
713 AM EDT Sat Sep 24 2016 High pressure will maintain dry weather and seasonable temperature for the weekend. No major changes were needed for the dawn update as the cold front is completing passage across the Upper Ohio Region. Subsidence and dry advection with building high pressure will erode clouds as the morning progresses.
723 AM EDT SAT SEP 24 2016 With high pressure remaining firmly in control of the weather pattern, very little change is expected from the past 24 hours, with VFR conditions at all sites through the forecast period.
1004 AM CDT SAT SEP 24 2016 Weak high pressure at the surface will continue to ridge into the forecast area from the northeast with light low level southeast flow the result. Some weak upper level ridging will preclude widespread shower activity. No POPs have been mentioned remaining sites as ridging aloft should maintain enough capping to limit convection today. Aloft a ridge remains in place, however it is centered over the NE gulf coast and is gradually weakening.
Then focus quickly turns to the potential for another round of thunderstorms tonight into Sunday morning along a cold front.
Light south winds also willcont across all sites until late tonight when a shift to north windswill begin to occur associated with a cold front. Forcing for ascent remains well focused along a steep isentropic response along the leading edge of the deep 500mb trough over the Rockies and ahead of the frontal boundary. Additional storms will form later tonight in northern Oklahoma as a cold front moves across the area. /issued 315 AM CDT SAT SEP 24 2016/ Part of a strong western trough/low will move across the northern Rockies and Plains today. Meanwhile, the trough moving across the northern Plains will continue east into the Great Lakes region. This will help push a cold front across Oklahoma and north Texas.
/Issued 319 AM CDT SAT SEP 24 2016/ An upper level low was located over southern Wyoming early this morning. The panhandles were under the right entrance region of the upper jet streak that was rotating northward into the Wyoming upper low. This trough may also provide a focus for additional showers and thunderstorms which will again move east across the eastern panhandles. A cold front will move south across the panhandles late tonight into Sunday morning as the upper level low moves out onto the northern plains.
1140 AM EDT SAT SEP 24 2016 Hydro High pressure north of Lake Huron will provide fair weather today and through most of Sunday.