Aikyam-Lab/Synoptic-Bench huggingface dataset:
1212 PM EDT THU SEP 29 2016 A cold front will slowly push through the forecast area today, stalling near the eastern FA. Behind these features, drier and cooler air will filter into the region. Fair weather expected over the weekend, with weak high pressure and dry air over the region. An upper level low over the Ohio Valley and associated cold front will bring dry weather to much of the forecast area today. The cold front will continue to move through the forecast area this afternoon pushing east of the area by Friday morning. Closed upper level low will remain nearly stationary over the Ohio valley.
836 AM EDT THU SEP 29 2016 Moisture will continue to stream Northeast across the forecast area Today, on Southwest flow ahead of an approaching cold front.
The upper level ridge over the region will shift to the east late today and overnight but not before one last pleasant weather day. This will allow the low pressure system off the coast of Canada to drop southward and in turn push a weak cold front across the region overnight.
The building ridge will ensure that high clouds at FL250-300 will continue to filter into North and Central TX terminals. /ISSUED 318 AM CDT THU SEP 29 2016/ Though 3 to 4 hours slower than expected on previous forecast, the cold front is now here and moving into Central Texas as noted by area radar and observations. Meanwhile, a broad upper ridge has developed over the Plains, while a detached upper low continues sinking slowly south across the Ohio Valley and toward the Tennessee Valley. Mostly sunny skies will occur underneath the upper ridge today, while modest cold advection occurs in the lowest 5000 feet.
A cooling trend will continue into the weekend as the marine layer and onshore flow become better established with a trough deepening along the West Coast. In addition, a dry cold front will go through on Friday which will lead to breezy conditions. The warmest inland areas will reach the lower 90s, but these areas will not be widespread. Cooler temperatures will continue into the weekend as an upper level trough approaches the coast. A dry cold front will move across the district on Friday resulting in an increase in wind speeds, mainly over the coastal waters and areas near the coast as well as in the near-coastal hills.
902 AM EDT THU SEP 29 2016 Update Low pressure will continue to spin near and over Lower Michigan through the week and into the weekend.
1014 AM EDT Thu Sep 29 2016 Expansive area of upslope driven low clouds will erode through early this afternoon, only to replaced by additional clouds rotating back west on north side of expansive upper level low centered in the Ohio Valley. Otherwise, increasingly gusty northeast winds will make expected highs in the mid and upper 60s feel just a touch cooler. Dry NE low level flow well north of the low center has kept much of our CWA mostly clear thru the night. With the low remaining basically stagnant over the Ohio Valley combined with persistent dry NE low level flow. The upper low that moved across the region over the last few days has settled south across the southern Ohio Valley as advertised.
629 AM CDT THU SEP 29 2016 /12Z TAFS/ Cold front continues to make slow progress southward this morning. /issued 359 AM CDT THU SEP 29 2016/ (Today and Tonight) A weak cold front continues to head south across west central Texas early this morning.
1025 AM EDT Thu Sep 29 2016 Upper level low pressure will bring rain to our region for the rest of the week. Deep, mature, stacked low pressure continues to spin over the Mid Ohio Valley with surface occluded front objectively analyzed as curving across Central WV. These areas will be closely monitored for severe given the magnitude of deep layer shear on the eastern flank of the low.
605 AM CDT THU SEP 29 2016 Latest water vapor imagery in addition to RAP 500 mb analysis shows an upper ridge axis extending over the nation's mid section. This is sandwiched in between a trough to our west and a deep low to our northeast. At the surface, a ridge axis extends from the eastern Dakotas into eastern Nebrsaka. Otherwise, dry weather is expected to continue for the forecast area through the weekend with temperatures close to normal for this time of year as the upper low to our northeast continues to spin south of the Great Lakes.
918 AM EDT THU SEP 29 2016 KBYX detects patchy, light rain over offshore Gulf of Mexico waters north-northwest of the Lower Keys. Temperatures are in the lower to mid 80s. In the low to mid levels of the atmosphere, an Atlantic ridge of high pressure will extend across the Florida Straits this afternoon. In the upper levels of the atmosphere, a trough of low pressure will be located over the eastern Gulf of Mexico today. Despite ample atmospheric instability and moisture in place for convection, anticyclone flow in the low to mid levels of the atmosphere will limit POPs to slight chance category today.
Surface analysis this afternoon places a cold front along the Mississippi River this afternoon. A cold front will continue to push through the Mid-South tonight. Cooler temperatures are expected to return Thursday with highs in the 40s at most locations.
644 PM CST Wed Jan 25 2017 An upper level trough of low pressure continues to drop south through the forecast area. Ahead of the trough widespread flurries continue across much of west and central ND. Expect the light snow or flurries to continue this evening and then become more scattered late tonight as the upper trough pushes south.
Ridging will return later in the week, bringing dry weather through the weekend. (Tonight and Thursday) Some light rain and snow showers may develop this evening through tomorrow, as a weak surface pressure trough crosses the region. Precipitation amounts look to remain light, with most locations seeing less than 1/10 of an inch of rainfall, and less than 1 inch of snow for the higher elevations across the interior. Otherwise, increased cloud covers will help insulate the ground, with slightly warmer overnight low temperatures expected tonight.
627 PM EST Wed Jan 25 2017 A cold front will sweep east across the region this evening, and precipitation will diminish before scattered rain and snow showers develop Thursday as colder air filters into the Ohio Valley.
432 PM MST Wed Jan 25 2017 Amplified ridging over the left and right coasts of the CONUS is keep a cold and unstable trough over the Great Lakes to Desert Southwest region this afternoon.
959 PM EST Wed Jan 25 2017 A cold front will pass through the area Thursday morning.
257 PM PST Wed Jan 25 2017 The cold front and weak disturbance is moving towards Southern Oregon at the moment. Eventually, high pressure will build during Thursday and into the weekend. The lower levels of the atmosphere should dry out fairly quickly, so skies are expected to become partly to mostly sunny once all of the fog clears out. As high pressure builds, a strong inversion will restrict mixing during the daytime hours. In addition, warmer air moving in from the southwest will help strengthen this inversion during the night time hours. Other than fog and high pressure, the weekend should remain rather pleasant with highs in the upper 40's. -Smith Upper ridging will remain in place for the first part of the long- term, gradually giving way to upper troughing and precipitation later.
528 PM EST Wed Jan 25 2017 A cold front will bring showers tonight, followed by colder temperatures and snow showers Thursday afternoon through the weekend. Main band of showers is still well ahead of the cold front, now into western Ohio. The front will cross the region overnight with showers, but main cold advection will lag the front as mid level trough follows. Mid level trough will begin more significant cold advection Thursday morning with rain showers changing to snow showers, especially in the afternoon. For the I-80 corridor and the ridges expect a light accumulation by evening, with a coating of snow possible in the afternoon elsewhere.
914 PM EST Wed Jan 25 2017 Low pressure will move through the Great Lakes tonight, bringing a return to more winter like weather through much of the period.
Have issued a Winter Weather Advisory for portions of southeast Minnesota, northeast Iowa, and far southwest Wisconsin through midnight where light snow continues and we are expecting some patchy drifting in open areas/ridgetop locations. Refreezing of the slushy snow accumulation will be a concern on untreated road surfaces across most of the area tonight. Final snow totals will likely range 5 to 11 inches on the ridge tops of western Wisconsin and the higher elevations of southeast Minnesota and northeast Iowa. 12z models are in good agreement that the short wave trough will move southeast through southern Wisconsin and northeast Iowa. The highest totals will be located along and south of the Wisconsin River. On Thursday, a short wave trough will move southeast through the region.
649 PM EST Wed Jan 25 2017 Cold front getting closer and line of showers now approaching all terminals.
926 PM CST Wed Jan 25 2017 Made a few changes to the ongoing forecast such as lowering the dewpoints and subsequent relative humidity values, as it was not reflective by the cooler and drier air settling in behind the earlier cold frontal passage. As such, overnight temperatures are still expected to drop into the 30s which is much cooler than recent nights. /issued 254 PM CST Wed Jan 25 2017/ Today temperatures will be in the lower 70s south of I-20 while areas north of I-20 will range from the mid to low 60s. Tonight the cold front will move east of the area followed by clearing skies starting from east Texas, southern Oklahoma and central Louisiana. Thursday will be cooler with high temperatures in the mid to lower 50s across the Ark-La-Tex, along with northwest winds 5 to 10 mph.
/issued 253 PM CST Wed Jan 25 2017/ A broad upper trough will extend across much of the country on Thursday.
523 PM CST Wed Jan 25 2017 After a blustery afternoon across the region with wind chill values in the lower teens, expect winds to slowly diminish during the early evening hours as the responsible area of low pressure continues to trek eastward. this much cooler airmass.
Concur with GFS deterministic that an upper trough will flatten as it moves EWD across the Central CONUS/Mississippi Valley Tonight/ Thursday while another E-W oriented upper trough moves SWD across the Midwest/NRN Plains. The corresponding cold front has moved offshore. Anticipate only SCEC conditions over the Nearshore Coastal Waters given cooler SST values. MSAS reveals below freezing surface dewpoints yet expect limited radiational cooling overnight given clouds (yet decreasing) and wind (yet decreasing.
747 PM CST Wed Jan 25 2017 Continued the SPS across the eastern CWA for the possibility of freezing drizzle. Also watching northeast SD as they are getting areas of freezing drizzle this afternoon. Inserted areas of freezing drizzle in the grids until this evening as soundings show favorable setup for this. Have therefore sided towards the warmer end of available guidance for tonight's lows.
A cold front has cleared Deep South Texas and is located well offshore the Lower Texas Coast. A cold front had moved offshore this afternoon with high pressure building in the wake of the frontal boundary. High pressure will continue to build into south Texas through the overnight period with temperatures dropping into the low to mid 50s inland to upper 50s right along the coast. Cooler weather will continue Thursday night into the weekend as an elongated upper trough continues to slow drop south.
547 PM CST Wed Jan 25 2017 An intense sfc cyclone was occluding over the WI/IL border this afternoon. The character is teaming with large high pressure covering most of the Northern Rockies to produce brisk NW winds that have resulted in much cooler weather across KICT Country. The intense sfc cyclone will move NE across Quebec tonight & Thu then across Labrador/Newfoundland Thu night & Fri while high pressure strengthens considerably over the Great Basin. Warmer weather is still scheduled to arrive on Sat as the lower-deck flow takes on a more westerly component. It'll be much warmer to start the work-week as strengthening lower deck troffing surges E/SE across the Northern Plains to induce the flow to back to a SW-W component. It'll turn cooler on Tue when a weak SE-moving cold front should cross KS in the morning.
A high pressure extending from South Florida over the Bahamas archipelago will consolidate overnight and move eastward over the western Atlantic Ocean.
/Rest of This Afternoon and Tonight/ A cold front is pushing through central Indiana at the moment. The area should remain precipitation free until mid evening as an upper trough moves toward the area. These plus some decent cold advection should create some scattered rain/snow showers from mid evening on, with the highest PoPs across the northern forecast area closer to the best upper forcing. Lows in the low to mid 30s look good given expected conditions, and these are near MOS and the raw model blend.
Primary influence is from a cold front over the FL Panhandle drawing nearer with associated clouds moving in overhead. Lows will drop into the lower to mid 50s south and mid to upper 50s nrn sections. Increasing clouds in advance of cold front nearing KLEE around 21z transitioning southward during day.
848 PM MST Wed Jan 25 2017 Weak trough moving through the area with heights slowly building which is limiting vertical motion. Water vapor imagery shows cyclonic north flow over the region with a ridge along the Pacific coast and parent low well to our east. Any chance of light precipitation will diminish later tonight and early Thursday as we begin to see more significant height rises as Pacific ridge builds over the northern Rockies.
745 PM CST Wed Jan 25 2017 A cold front which pushed thru the region last night is now entering the NW Gulf of Mexico. Cooler and drier air is in place over the region behind the front. The clear skies and some cold advection will allow for a chilly sub-freezing night tonight, although lows will be pretty close to average for this time of year. /Issued 305 PM CST Wed Jan 25 2017/ Temperatures are much closer to normal Today in the wake of the cold front that passed through the area last night. The trend of near normal temperatures will continue through the weekend as a northwesterly flow aloft develops with a ridge building over the western United States.
Cold front is just now entering West Tennessee, with only isolated light showers having occurred in Middle Tennessee thus far. Existing showers do appear to be lined up along a developing pre- frontal trough that will intensify over the next few hours, with showers increasing east of Nashville later this afternoon and evening.
Brisk nwly winds will prevail through Thu AM in the wake of low pressure.
951 PM EST Wed Jan 25 2017 A cold front approaches from the west tonight and moves across on Thursday as low pressure deepens across SE Canada into Thursday night.
A short wave diving south near the coast is pushing a weak cold front through the area at this time. A long wave ridge is now building offshore and low level flow will turn easterly Thursday. Expect mostly clear skies except for late night into morning fog/freezing fog in the valleys, mostly on the west side.
Pattern shift is underway with a strong closed upper low tracking across the Upper Midwest. Expect the cold front to push through this evening, with westerly winds cranking up behind it.
Over the weekend, heights begin to rise as an upper level ridge builds across the Western United States.
A cold front moved through the region this morning leaving behind northwest winds and much cooler air today with high temperatures 15-20 degrees cooler than yesterday. Radar has indicated returns across the region for most of the day associated with an upper trough moving across the region, but other than a few social media posts of light sleet, not much precipitation has been observed. Not much change is expected over the next 5-6 days as a large trough over the eastern U.
Upper trough continues to drop south through the forecast area. An area of enhanced snowfall remains situated over central ND ahead of a slowly moving upper level trough. An upper level trough of low pressure continues to drop south through the forecast area. Ahead of the trough widespread flurries continue across much of west and central ND. Expect the light snow or flurries to continue this evening and then become more scattered late tonight as the upper trough pushes south.
Also had a report from the Fargo area of very light freezing drizzle. Think the light freezing drizzle will be short lived and minor, so will hold off on adding any of that to the forecast. Generally quiet conditions to continue as the region remains between low pressure moving off towards the Great Lakes and high pressure building into the western CONUS. A bit stronger cold advection as compared to last night and Wednesday (although still relatively weak) in cooler northwest flow will allow temperatures to drop into the teens tonight but should still recover to around normal values for Thursday (upper teens/low 20s).
637 PM CST Wed Jan 25 2017 Cooler conditions are occurring across the region today, as gusty northwest winds usher in a more seasonable airmass.
338 PM MST Wed Jan 25 2017 Amplified ridging over the left and right coasts of the CONUS is keep a cold and unstable trough over the Great Lakes to Desert Southwest region this afternoon.
720 PM EST Wed Jan 25 2017 Low pressure will move through the Great Lakes tonight, bringing a return to more winter like weather through much of the period.
Still expect a cold front to quickly move southeast into our area overnight, with showers and isolated storms likely north and west of Tallahassee mainly after midnight.
Dry weather will prevail over the central California interior during the next several days as an area of high pressure builds in from the Pacific.
A cold front and associated line of showers is currently moving across Acadiana. /issued 250 PM CST Wed Jan 25 2017/ A cold front is working its way across the forecast area this afternoon and at 25/20Z is located roughly from around KHEZ to KACP to in between K5R8 and KLCH to near the coast south of KBPT. Rua Cold front will continue to move off to the east and be through the forecast area by early this evening, with much cooler and drier air then overtaking the entire forecast area. Upper level pattern will develop as such that an upper level trough will deepen across the eastern portion of the U. with an upper level ridge forming over the southwest and along the Pacific coast over time.
Also watching northeast SD as they are getting areas of freezing drizzle this afternoon. Inserted areas of freezing drizzle in the grids until this evening as soundings show favorable setup for this. Have therefore sided towards the warmer end of available guidance for tonight's lows.
/issued 254 PM CST Wed Jan 25 2017/ Today temperatures will be in the lower 70s south of I-20 while areas north of I-20 will range from the mid to low 60s. Tonight the cold front will move east of the area followed by clearing skies starting from east Texas, southern Oklahoma and central Louisiana. Thursday, will be cooler with high temperatures in the mid to lower 50s across the Ark-La-Tex, along with northwest winds 5 to 10 mph.
Cold front has pushed off the Upper Texas Coast, but an elevated surface pressure gradient will keep winds around 10 knots inland and closer to 15-20 knots along the coast through Thursday.
Generally quiet conditions to continue as the region remains between low pressure moving off towards the Great Lakes and high pressure building into the western CONUS. A bit stronger cold advection as compared to last night and Wednesday (although still relatively weak) in cooler northwest flow will allow temperatures to drop into the teens tonight but should still recover to around normal values for Thursday (upper teens/low 20s).
Showers currently moving through most of our area just out ahead of approaching cold front. Cold front just now entering Nashville area and moves into our CWA in the next few hours. Chattanooga Airport, TN 43 51 33 45 / 70 0 10 10 Knoxville McGhee Tyson Airport, TN 41 48 31 42 / 70 10 10 20 Oak Ridge, TN 41 46 31 42 / 70 10 10 20 Tri Cities Airport, TN 41 46 28 38 / 70 20 20 20.
Cold front has made its way through Clarksville this evening and is working its way eastward. Lows still look to be in the low to mid 30s across the area as skies clear briefly overnight post fropa. Cold front is slowly working its way towards the region, with some showers way out ahead of it just exiting KCSV's area attm.
802 PM CST Wed Jan 25 2017 An area of enhanced snowfall remains situated over central ND ahead of a slowly moving upper level trough. An upper level trough of low pressure continues to drop south through the forecast area. Ahead of the trough widespread flurries continue across much of west and central ND. Expect the light snow or flurries to continue this evening and then become more scattered late tonight as the upper trough pushes south.
Upper trough will gradually move south across the region tonight through Thursday. Isolated light snow showers will accompany the trough. The showers will diminish from north to south on Thursday as the upper trough pushes into Nevada and Utah by late Thursday afternoon.
547 PM CST Wed Jan 25 2017 Early afternoon water vapor imagery indicates the closed mid- level cyclone was currently rotating through southern IA this afternoon.
A cold front had moved offshore this afternoon with high pressure building in the wake of the frontal boundary. High pressure will continue to build into south Texas through the overnight period with temperatures dropping into the low to mid 50s inland to upper 50s right along the coast. Cooler weather will continue Thursday night into the weekend as an elongated upper trough continues to slow drop south.
/Issued 305 PM CST Wed Jan 25 2017/ Temperatures are much closer to normal Today in the wake of the cold front that passed through the area last night. The trend of near normal temperatures will continue through the weekend as a northwesterly flow aloft develops with a ridge building over the western United States.
This corresponds to the base of the trough beginning to swing east out of the area. A large upper ridge,currently to our north and following the trough, topples over into our area Thursday. Templer Previous discussion - A lingering trough will maintain upper forcing for ascent and therefore cannot rule out a few lingering flurries or snow showers near the Montana/North Dakota border. An upper level ridge will build across the western U.
401 PM CST Wed Dec 14 2016 High pressure will slide off to our east tonight allowing for return southerly flow and warm air advection.
Expect a brief period of mostly clear skies late this afternoon into early evening, but mid and high level cloudiness will begin increasing overnight as an arctic cold front sweeps through the region. Thursday looks to be the coldest day so far this season with temperatures not rising above the freezing mark for most locales, then falling into the teens once again Thursday night.
Arctic high pressure is settling over the region. High pressure will be located over NW Missouri by 12z Thursday.
/issued 401 PM CST Wed Dec 14 2016/ The concern overnight is the scattering of clouds causing temperatures to fall to the mid 30s north of I-20, and south of I-20 temperatues will be slightly warmer due to clouds remaining overnight. Thursday high temperatures will range from the lower 50s south of I-20 to mid 40s north of I-20.
The upper level trough and attendant cold front will exit the area tonight. High pressure will build into the area from the High Plains behind the front bring another reinforcing shot of cold air into the area. The lows tonight across the area will again be ten or more degrees below normal. High pressure pushes east into the Ohio Valley tomorrow afternoon allowing for weak southeasterly surface return flow.
The early eve update featured some adjustments to near term weather over I 80 corridor and ridge zones where snow showers have been slow to develop.