Aikyam-Lab/Synoptic-Bench huggingface dataset:
High pressure allowing for VFR conditions through the TAF period. High pressure over South Florida will drift southward into the Florida Keys on Friday, as a trough of low pressure moves east across the eastern United States and into the Atlantic waters. Lows tonight will be warmer compare to last night due to the south to southwest wind flow. Highs on Friday will also be warmer with upper 70s to near 80 degrees except mid 70s west coast metro areas of South Florida. An area of high pressure will continue to dominate the weather pattern across South florida through the weekend allowing for dry conditions to continue.
518 PM CST Thu Jan 21 2021 A cold front is sagging south across the area this afternoon and temperatures are dropping into the teens accordingly across central Minnesota.
956 PM EST Thu Jan 21 2021 Cold front brings reinforcement of cold airmass Friday.
417 PM MST Thu Jan 21 2021 Water vapor shows broad west/northwest flow aloft over the Northern Plains with upper low just offshore the Pac NW. At the surface, high pressure ridge continues to build into the Northern Plains with gusty northwest winds on the SD plains.
Friday the Oregon low digs which pulls the moisture southward for a while and the area will be dry until the low begins moving into the eastern Great Basin inducing pressure falls over Wyoming.
530 PM CST Thu Jan 21 2021 A backdoor cold front located between KCDS and KPVW/KLBB will move southeastward passing the latter two terminals later this evening. /issued 212 PM CST Thu Jan 21 2021/ The upper trough currently over southern Arizona will move over the FA later tonight and will bring a cold front southward into the FA by sunrise tomorrow night. Stratus is expected behind the front and will help to keep temps behind the front on the cool side with current highs ranging from the mid/upper 40s across the southeastern Texas Panhandle to the low 60s across Yoakum county.
/issued 402 PM CST Thu Jan 21 2021/ Today has seen a warm front just to the north as southerly flow off the gulf continues.
304 PM CST Thu Jan 21 2021 A dry cold front will move southeastward through our forecast area this evening, putting an end to our current warming trend.
252 AM CST Fri Jan 22 2021 Pretty quiet across the region early this morning, with clear skies for most of the area as high pressure continues to build in from the west. Somewhat breezy northwest winds continue to usher in cooler air, as temperatures around 3 AM were in the single digits in many locations. With surface ridging in place overnight, expect continued quiet, clear, and cold weather as we see widespread lows below 0.
1041 PM CST Thu Jan 21 2021 A cold front is sagging south across the area this afternoon and temperatures are dropping into the teens accordingly across central Minnesota.
Decided to issue a special weather statement for localized dense fog and pockets of freezing fog across the Lake Cumberland Region this morning. High clouds associated with a passing system across the Gulf Coast will lingering over the southern half of our CWA this morning as a cold front drops southward across the Ohio Valley today. Canadian high pressure moves in behind the cold front later today and tonight helping to clear us out and provide sunny skies later this afternoon. Using the Massie Rose 1997 1000-850 mb thickness, expecting high temperatures to be cooler in the low to mid 40s across our CWA.
5 inches, with the highest amounts expected acrs cntl LA. /issued 402 PM CST Thu Jan 21 2021/ Today has seen a warm front just to the north as southerly flow off the gulf continues.
1106 PM CST Thu Jan 21 2021 Mild temperatures return reaching the upper 40s for areas north of US36 and the low to mid 50's for places south. This system will have little impact on our weather thanks to the large high pressure dominating the central CONUS.
The center of this high was located over the eastern Dakotas. A secondary upper low was off the west coast of Oregon. The upper low off the west coast will begin to dig southeast into California. At the surface, the high pressure center will track southeast into eastern Iowa by the end of the day. With cold air associated with the high pressure system moving into the area, temperatures will remain chilly today from the upper 30s to mid 40s. For tonight, the high pressure system will begin to track southeast into the western Great Lakes and Ohio valley region.
Satellite shows upstream high clouds are a bit cooler on IR, and may be more dense, which may help preventing more widespread dense fog. A cold front will move through the area Thursday morning with conditions rapidly improving to VFR at all sites.
/issued 827 PM CST Thu Jan 21 2021/ Cold front is south of the region this evening. Another upper level disturbance will approach the Lower MS valley overnight and rain will skirt the southern counties of the forecast area roughly south of a line form Clarksdale to Tupelo. /issued 259 PM CST Thu Jan 21 2021/ Light rain associated with a cold front sinking south is continuing across our southern counties in MS. High pressure builds in with rain ending by around 17Z Friday.
The snow that fell this afternoon and early evening melted initially on roadways before freezing, creating slick conditions. Friday the Oregon low digs which pulls the moisture southward for a while and the area will be dry until the low begins moving into the eastern Great Basin inducing pressure falls over Wyoming.
1005 PM CST Thu Jan 21 2021 At 2 PM, a cold front was moving southeast through the Twin Cities. This cold front will move quickly southeast through our area this afternoon and early evening. While skies will be mainly clear tonight, the winds will likely keep the boundary layer mixed, so kept the low temperatures mainly in the single digits above zero. This will be the coldest day since Christmas Eve when the high temperatures ranged from 5 to 15 degrees. Cooler conditions are expected Friday night.
119 AM EST Fri Jan 22 2021 A wave of low pressure moving east along a stalled frontal boundary will help spread rain across South Carolina today, and possibly as far north as Cape Fear. Building high pressure will bring a drying trend into the weekend.
/issued 212 PM CST Thu Jan 21 2021/ The upper trough currently over southern Arizona will move over the FA later tonight and will bring a cold front southward into the FA by sunrise tomorrow night. Stratus is expected behind the front and will help to keep temps behind the front on the cool side with current highs ranging from the mid/upper 40s across the southeastern Texas Panhandle to the low 60s across Yoakum county.
Precipitation has for the most part tapered off over most of the forecast area as a low pressure system continues to drop southward along the coast. Also the northerly upslope flow combined with the low moving across southern Oregon into California will clip central Oregon later tonight and Friday morning with a period of light snow there, with light accumulations.
1046 PM CST Thu Jan 21 2021 A dry cold front will move southeastward through our forecast area this evening, putting an end to our current warming trend.
1050 PM CST Thu Jan 21 2021 This afternoon, satellite imagery shows stratus and flurries spreading in from the southern Red River Valley, associated with a weak disturbance aloft, resolved as a backdoor cold front.
Once the fog dissipates by mid morning Friday, VFR will prevail as high pressure builds into the region. Garuckas Chattanooga Airport, TN 55 32 51 34 52 / 0 0 0 0 50 Knoxville McGhee Tyson Airport, TN 51 28 46 30 50 / 0 0 0 0 40 Oak Ridge, TN 51 27 46 29 50 / 0 0 0 0 40 Tri Cities Airport, TN 47 23 42 26 50 / 0 0 0 0 20.
1159 PM CST Thu Jan 21 2021 A weak cold front moved through western NE this afternoon with increasing clouds across the panhandle and southwest. Highs will be coldest in the northeast at near 30 degrees, ranging in the lower 40s in far southwest NE. A positively tilted upper trough will extend across the Great Basin into the Rockies as a deep closed low extends over northern Saskatchewan and northern Manitoba. Light snow is forecast to develop ahead of this trough, in west southwest flow aloft from WY into northern NE and SD.
1245 AM EST Fri Jan 22 2021 Colder temperatures, chances for light lake effect snow showers, and clouds will return tonight into Friday behind a cold front.
This is occurring within a zone of enhanced low level convergence associated with the Chugwater Cyclone.
116 AM MST Fri Jan 22 2021 500mb RAP analysis and satellite imagery showed west-northwesterly flow across the High Plains early this afternoon. A cold front, associated with a system now based in eastern Canada, sags behind across the northern Plains and Rockies. A disturbance and the aforementioned cold front look to push south and east tonight into northern Nebraska. With troughing to our west, southerly winds are forecast at 10 to 20 mph. Temperatures will be somewhat cooler (highs in the 40s) under sunny to mostly sunny skies. Otherwise, temperatures fall into the low to mid 20s Friday night as clouds push in from the west.
Higher level clouds are streaming across much of the area to the north and east of the low cloud deck. A weak cold front will move south across the area later tonight into Friday morning. This will likely eventually scour out the low clouds, but some higher level cloudiness will remain. Increasing north winds following the passage of the cold front will likely also dissipate the light fog that is currently occurring.
358 AM EST Fri Jan 22 2021 Mild high pressure will extend across the Carolinas today, followed by the passage of a dry cold front tonight.
Rain chances will then decrease through the afternoon as a cold front moves southward over the coast. As for winds, southwest winds will shift to be northeasterly on Friday as the cold front moves over the local area.
Another factor for tonight is the passage of the cold front currently located over S KS. As mentioned previously, a cold front will pass through the TAF sites overnight. Higher level clouds are streaming across much of the area to the north and east of the low cloud deck. A weak cold front will move south across the area later tonight into Friday morning. This will likely eventually scour out the low clouds, but some higher level cloudiness will remain. Increasing north winds following the passage of the cold front will likely also dissipate the light fog that is currently occurring.
108 AM EST Fri Jan 22 2021 Mild high pressure will extend across the Carolinas today, followed by the passage of a dry cold front tonight.
1242 AM EST Fri Jan 22 2021 A wave of low pressure moving east along a stalled frontal boundary will help spread rain across South Carolina today, and possibly as far north as Cape Fear. Building high pressure will bring a drying trend into the weekend.
1013 PM MST Thu Jan 21 2021 Water vapor shows broad west/northwest flow aloft over the Northern Plains with upper low just offshore the Pac NW. At the surface, high pressure ridge continues to build into the Northern Plains with gusty northwest winds on the SD plains.
1024 PM EST Thu Jan 21 2021 Currently - A narrow ridge extends from east of the northern Bahamas, across extreme South Florida and the Keys and continues into the Gulf of Mexico. Winds are backed and stronger over our western zones, likely due to cooler bay and gulf side waters. Broad deep layered ridging is in place with the lower level ridge centered over the Florida Straits. The effects of cooler waters will likely delay the shift to later. The light flow will result in continued radiational cooling and overnight lows will range from the lower 60s to upper 60s depending on proximity to coast with an incoming breeze. Will nudge overnight lows down Ridging across extreme South Florida and the Keys will shift further south into Keys waters overnight.
Clearing trend to continue into afternoon as high pressure builds in from the north.
High pressure will spread across the region tonight and Saturday, with rain-free conditions and clearing skies. Cooler air advecting southward tonight will allow temperatures across the north to fall into the upper 20s to mid 30s. Slightly warmer temperatures are expected tomorrow, with mostly clear skies.
513 AM MST Fri Jan 22 2021 High pressure currently dominates the CWA with only weak upper level instability providing a few light snow showers in the Sawatch Range. Due to clear skies and significant radiational cooling in the San Luis valley, conditions are favorable for some patchy freezing fog developing and impacting the central portion of the valley until the early morning until the inversion near the surface breaks up. Temperatures are going to be slightly warmer than previous nights due to the increase in cloud cover inhibiting radiational cooling at the surface.
There is another shot of 850mb warm advection across the FA, with increasing south winds (although still on the lower side) overnight.
404 AM MST Fri Jan 22 2021 Current satellite and radar data is showing some light snow falling in the high mountains along the divide, mainly north of I-70 to the Wyoming border. The low level winds are progged to be upsloping much of today, with more normal drainage patterns expected tonight. The plains will see mid and upper level moisture but little in the lower levels. Will go with 50-70%s in the high mountains today, and 60-90%s tonight.
542 AM CST Fri Jan 22 2021 Pretty quiet across the region early this morning, with clear skies for most of the area as high pressure continues to build in from the west. Somewhat breezy northwest winds continue to usher in cooler air, as temperatures around 3 AM were in the single digits in many locations. With surface ridging in place overnight, expect continued quiet, clear, and cold weather as we see widespread lows below 0.
A low pressure system will be over northern/central CA Friday night. An upper low near the Hudson Bay will rotate a trough southward over the Northern Rockies and Northern Plains Saturday as well. The associated cold front will quickly move east of the Divide through the morning hours Saturday, which will contribute to upslope flow.
Tonight/Saturday, upper trough moves across the Rockies into the plains. Inverted trough feature intersects aforementioned frontal boundary.
422 AM EST Fri Jan 22 2021 Cooler temperatures expected today along with scattered light snow showers through Saturday morning with the passing of a cold front. A cold front crossing the region today will result in scattered lake enhanced snow showers with cole northwesterly flow behind the front. except north of I-80 and in the ridges where one to two will be possible with orographic enhancement. Some isolated to scattered snow showers will continue into Saturday morning in the ridges before increasing subsidence with building high pressure sufficiently lowers the inversion and suppresses the convection.
Slightly cooler drier air will advect south into the CWA during the period, as high pressure to the north builds south and into the region. Meanwhile, lows tonight will range from the lower 30s north to middle 40s south.
920 AM EST Fri Jan 22 2021 A dry cold front will pass across the Appalachians this afternoon, with high pressure then controlling the weather pattern through the weekend.
Flow shifts to the south with the trof over the Rockies, with temperatures rising.
537 AM CST Fri Jan 22 2021 Temperatures turn colder today as high pressure settles into central Illinois.
Highs will range from the mid 20s far north to the low 40s far south. Temperatures will moderate just a bit with highs in the low 30s to low 40s. Deepening upper level trough over the southwestern U. This will allow a developing warm front over forecast area to lift northward, so temperatures will be steady or slowly rise during the overnight hours. A mixture of light rain, freezing rain, sleet, and snow is expected with evaporative cooling enhancing nocturnal cooling as the precipitation initially falls into a very dry boundary layer, especially along and north of I-70, with minor ice and snow accumulations expected.
447 AM CST Fri Jan 22 2021 A seasonally-progressive mid-winter pattern will prevail over the lower 48 states through the next 7 days. The forecast will start out with confluent zonal flow over the eastern half of the US, downstream of an upper trof over the Great Basin. This rain will taper off this morning, as this jet streak weakens and upstream ridging amplifies over the plains. The southern plains ridge will translate east to the lower MS River valley on Saturday, bringing continued mild and dry conditions to the Midsouth.
419 AM CST Fri Jan 22 2021 Temperatures turn colder today as high pressure settles into central Illinois.
407 AM CST Fri Jan 22 2021 An area of stratus has persisted tonight west and south of Aberdeen where increased low to mid level moisture is advancing on the nose of a warm front extending from the Colorado low that will affect our region on Saturday. The warm front pushes into central SD by mid day Saturday with southerly flow ahead of the front continuing to advect in mid level moisture and help increase lift for light to moderate snow.
A few lingering snow showers will be present over the higher terrain of southwest Montana this morning, then gradually clearing from northwest to southeast. The Northern Rockies will be between cold troughs over the weekend, with clearing skies and colder than normal overnight temperatures possible.
As it passes by the region will go into brief ridging aloft but the next upper low swings across CA today with a secondary low rotating behind it Saturday.
This high pressure will keep us sunny but cool today. The aforementioned cold front will lay out east-to-west south of us, and that will be the focus for snow on Saturday. For Saturday, as the high shift eastward and a lee-side low develops out west, southerly winds will increase across the region.
Return flow on the back side of cool high pressure will continue on Saturday. Therefore, I expect much cooler highs in the 40s from Dodge City east to Pratt and Hays.
Cool air will remain entrenched at the surface while warm air advection occurs aloft, reinforcing the low level cloud cover as well as intermittent rounds of fog and light rain. Fog may become dense at times across portions of the Lower RGV which would necessitate an advisory.
943 AM EST Fri Jan 22 2021 A squashed mean-layer ridge stretches west across the Caribbean and Central America. The 12Z RAOBs across Florida sampled falling heights at all significant levels, corroborating the loss of latitude by the mean-layer ridge. Temperatures are in the lower 70s with dewpoints in the mid to upper 60s. From synopsis, weak high pressure across the Keys will maintain light to gentle breezes through Saturday.
635 AM EST Fri Jan 22 2021 Cooler temperatures expected today along with scattered light snow showers through Saturday morning with the passing of a cold front. A cold front crossing the region today will result in scattered lake enhanced snow showers with cole northwesterly flow behind the front. except north of I-80 and in the ridges where one to two will be possible with orographic enhancement. Some isolated to scattered snow showers will continue into Saturday morning in the ridges before increasing subsidence with building high pressure sufficiently lowers the inversion and suppresses the convection.
Rua A quasi stationary surface frontal boundary is located roughly along the Highway 190 corridor this early morning.
Low clouds that were over southern Oklahoma for a while overnight are clearing out as a cold front pushes south through the region this morning bringing in drier air and clear skies.
The resulting N/NE winds wl usher cooler and drier air into the FA. Winds wl begin to veer to the E/SE later Sat and Sat ngt as the high center shifts into the lower Great Lakes region.
Clearing trend to continue into afternoon as high pressure builds in from the north. High pressure in control for Friday night into Saturday with dry conditions to continue.
The cool northerly air that clipped us yesterday will keep temps cooler today. Some areas in the northern Panhandles are expected to dip below freezing, so freezing fog will be possible as well. Thus, expect to see the low clouds and fog dissipate by late morning as we start to warm up. The low will also tighten the pressure gradient and bring breezy winds to the area. Meanwhile, in the mid-levels weak ridging to zonal flow will bring WAA as well, making Saturday a mild day in the 60s for most.
343 AM CST Fri Jan 22 2021 Upper trough is moving across the forecast area early this morning. This is bringing a backdoor cold front into the region which as of 08z is located along a line from near Friona to Lubbock to north of Abilene. Northeasterly winds behind this front are ushering in a slightly cooler and more moist airmass into the region. With the moist flow continuing, the low cloud deck should remain in place for much of the day. This will lead to much cooler temperatures mainly in the 40's today where the cloud cover remains. But we will see much warmer temperatures by afternoon as increasing low level southwest breezes scour out the cool moist air. The next low pressure off the west coast was split between two batches of energy.
/issued 447 AM CST Fri Jan 22 2021/ A seasonally-progressive mid-winter pattern will prevail over the lower 48 states through the next 7 days. The forecast will start out with confluent zonal flow over the eastern half of the US, downstream of an upper trof over the Great Basin. This rain will taper off this morning, as this jet streak weakens and upstream ridging amplifies over the plains. The southern plains ridge will translate east to the lower MS River valley on Saturday, bringing continued mild and dry conditions to the Midsouth.
523 AM CST Fri Jan 22 2021 An area of stratus has persisted tonight west and south of Aberdeen where increased low to mid level moisture is advancing on the nose of a warm front extending from the Colorado low that will affect our region on Saturday. The warm front pushes into central SD by mid day Saturday with southerly flow ahead of the front continuing to advect in mid level moisture and help increase lift for light to moderate snow.
532 AM EST Fri Jan 22 2021 Low pressure will cross the region today through tonight.
833 AM EST Fri Jan 22 2021 Cooler temperatures expected today along with scattered snow showers through Saturday morning with the passing of a cold front. A cold front, currently entering the Cleveland metro, will continue southeast today. except north of I-80 and in the ridges where one to two will be possible with orographic enhancement. Some isolated to scattered snow showers will continue into Saturday morning in the ridges before increasing subsidence with building high pressure sufficiently lowers the inversion and suppresses the convection.
Each system will bring cooler temperatures along with gusty winds and brief periods of valley rain and mountain snow.
731 AM EST Fri Jan 22 2021 Low pressure will cross the region today through tonight.
138 PM MST Fri Jan 22 2021 While one weather system sits over Manitoba and keeps a cooler northwest flow aloft over the region a second area of unsettled weather will move across Wyoming this weekend. Temperatures will be close to normal for this time of year but lows in the teens and highs around 30 will feel cold since recent weather has been much warmer.
/issued 343 AM CST Fri Jan 22 2021/ Upper trough is moving across the forecast area early this morning. This is bringing a backdoor cold front into the region which as of 08z is located along a line from near Friona to Lubbock to north of Abilene. Northeasterly winds behind this front are ushering in a slightly cooler and more moist airmass into the region. With the moist flow continuing, the low cloud deck should remain in place for much of the day. This will lead to much cooler temperatures mainly in the 40's today where the cloud cover remains. But we will see much warmer temperatures by afternoon as increasing low level southwest breezes scour out the cool moist air. The next low pressure off the west coast was split between two batches of energy.