Aikyam-Lab/Synoptic-Bench huggingface dataset:
157 AM CST Sun Nov 19 2017 Canadian high pressure will settle over the Mid South today. Highs will range from the middle 40s across northwest Tennessee to the lower 50s over north Mississippi. High pressure will move overhead tonight. This will mean a cold night ahead with widespread freezing conditions expected. Low temperatures will range from the middle 20s in the Tennessee Valley to around freezing in downtown Memphis. High pressure will move east on Monday with return southerly low level flow advecting warmer air into the region.
/issued 858 PM CST Sat Nov 18 2017/ Skies are clearing quickly behind the cold front this evening. /issued 306 PM CST Sat Nov 18 2017/ A cold front has crossed the Mississippi River and continue to move east across the forecast area. As the cold front moves out of west Tennessee, the thunderstorms will be out of the region and the Severe Thunderstorm watch will be cancelled. Behind the cold front, gusty northwest winds will continue to blow for a few hours and the Wind Advisory will remain in effect through this evening. High pressure will be over the southern Plains by Sunday morning giving us a dry and chilly day.
1115 PM CST Sat Nov 18 2017 The dry northwest flow pattern will persist through tonight and tomorrow as upper ridging continues over the western Conus. A deepening lee trough will begin to stack the pressure gradient across western portions of the CWA on Sunday.
Wind will continue to back to SW overnight as high pressure slides by to the south. Will also keep the high temperatures closer to the mid 30s with plenty of clouds, raw model output colder than guidance and the cooler trend in that guidance. High pressure ridge folds over Lower Michigan this evening which will not only end the cyclonic flow but also introduce some drier air in the boundary layer. Southwest gradient strengthens as the high moves east and the next potent system heads toward the northern Great Lakes.
1201 AM EST Sun Nov 19 2017 A strong cold front will cross tonight bringing strong winds and a changeover to snow showers by early Sunday morning. Cold front currently draped along a line running from Clarion to just east of Pittsburgh. Wheeling saw the highest gusts at 11:22PM when 51mph was observed by the ASOS. Wind advisory will continue for the ridges where more widespread gusts of >=46mph are more likely with frontal passage during the next couple hours.
1053 PM CST Sat Nov 18 2017 Blustery northwest winds prevailing over the region this afternoon following the passage of this morning's strong cold front. From a sensible weather standpoint, the upcoming week looks nothing less than boring as high pressure dominates the weather pattern across the Central U.
Clearing will continue to progress eastward in the wake of the departing upper trof this evening with diminishing winds as well. A weak upper trof will migrate across the area on Monday with a continued south-southwest low level flow moderating temperatures to seasonably mild levels across central and southeast Kansas.
208 AM CST Sun Nov 19 2017 High pressure will move across the area later today through tonight, with NW winds today becoming light tonight. It will be noticeably cooler today across the area.
318 AM CST Sun Nov 19 2017 Today: Ridge axis will move across the forecast area during the day with winds increasing/backing. This could keep maxes shy of full potential, but still prefer to hedge warmer than initialization given the otherwise classic set up for warmer than anticipated temperatures.
High pressure dominates the areas weather with dry conditions tonight. Otherwise minor changes were done to the overnight temps as they fall below freezing across most of the area and the present forecast appears on track. A low amplitude upper ridge will persist over the region tonight. This ridge will gradually flatten Sunday due to the approach of a weak disturbance.
High pressure aloft will remain over the region through the balance of the weekend. A weak weather disturbance will graze northern Utah on Monday, followed by even stronger high pressure aloft returning midweek. The low amplitude upper ridge across most of the western CONUS will maintain a dry and mild near zonal flow across this forecast area through early Monday.
/issued 159 PM CST Sat Nov 18 2017/ After yesterday's record warmth, temperatures were about 30 degrees cooler this afternoon thanks to an early day cold front. Even warmer weather will follow Monday as breezy southwesterly winds propel highs into the upper 60s and lower 70s.
By sunrise, the cold front will have moved through most of the area with a thin line of showers confined to the southeast big bend. These will exit the area quickly this morning with clearing skies, breezy northwest winds, and a cooler airmass behind the front.
Behind the exiting cold front, a NW flow pattern will be in place across the area today. Scattered to isolated showers will continue for northern sections this morning, with the higher elevations seeing some light snow accumulations.
A few locations may flirt with freezing, particularly in the northwest where the surface winds will be the lightest.
318 AM EST Sun Nov 19 2017 Gusty winds today in the wake of a cold front. Cold front that passed overnight is now east of the ridges with continued gusty winds and temperatures rapidly dropping in it's wake. The wind advisory remains in effect for the ridges where potential for gusts in of 45-55mph remains.
1054 PM CST Sat Nov 18 2017 A colder air mass has spread into the area behind a cold front that moved into the area earlier today. Winds will weaken and skies will clear this evening and tonight, allowing lows to fall into the upper 20s to the lower 30s. Sunny skies will occur on Sunday but a cooler air mass will remain over the area as highs warm into the upper 40s to the lower 50s. A warmer air mass will spread back north into the area on Monday as temperatures warm into the lower 60s.
Mostly sunny conditions with much lower winds will be seen on Sunday as the high pressure system builds in the region. Highs will be much cooler with mostly the 50s forecast.
316 AM EST Sun Nov 19 2017 A cold front will move rapidly east of the region this morning. A dry and cooler air mass will build over the area through Monday. Moisture will return mid to late week as the weak low pressure develops over the Gulf of Mexico. Upper level trough moving thru the eastern CONUS today. cold front has moved into the Piedmont SC. Stayed on the cooler side of Mos. Overnight low temperatures near freezing overnight especially in the north and west Midlands/CSRA. Dry and cooler air mass over the area Monday with temperatures ranging from the upper 50s north to the lower 60s south.
155 AM EST Sun Nov 19 2017 A cold front will cross central North Carolina early this morning. High pressure will build over the region today through Monday, before moving off the Carolina coast Monday night.
Upper ridge will be over Montana today with warmer temperatures. There will be mid and high clouds at times with either mid and high level moisture moving across the ridge or chinook arch clouds that form in the lee of the Rockies reaching as far as Northeast Montana. The ridge will be flattened tonight as upper trough moves inland across British Columbia. The fast moving trough will move across the Canadian Prairies and Montana tonight and Monday which will bring a cold front across the forecast area during the day on Monday. Much colder temperatures will prevail Monday Night as high pressure builds into the area from Canada.
1036 PM MST Sat Nov 18 2017 Strong winds aloft behind a Pacific low pressure trough will continue to surface along the Cody foothills bringing periods of high winds around Clark. Dry high pressure will be over western and central Wyoming tonight through Sunday night.
248 AM MST Sun Nov 19 2017 Main concern over the next 24 hours will be the high wind potential over the higher mountains and east slopes after midnight tonight. Temperatures will be warmer today as 700mb temperatures climb to around +0C by later today. Speeds of 25 to 40 mph along with low humidity in the low teens will increase fire danger - see fire discussion below. Moisture in the northwest flow will push into the mountains in the late afternoon, with snow falling over the high country.
145 AM EST Sun Nov 19 2017 A cold front will cross central North Carolina early this morning.
Weak high pressure remains over the forecast area late this evening. Quiet weather tonight as Canadian high pressure continues a southeast slide across North Dakota. The high quickly weakens as a surface warm front begins to push into the southwest, where above average lows are expected. The warm front will quickly progress northeastward across the state through Sunday morning with an apparent stall as it approaches the northeast corner. Warmer air will filter into the state behind the front though it will struggle to reach northeast areas. Highs for Sunday will range from the lower 50s in the southwest, to the upper 20s in the northeast corner of the CWA.
325 AM CST Sun Nov 19 2017 High pressure will dominate the area for the majority of the forecast period.
252 AM CST Sun Nov 19 2017 Northwesterly flow aloft has returned over the Central Plains, behind the upper trof now over the east coast. For today, the high plains lee trof develops by late afternoon, with southerly winds and warm advection over our area. Northeast Kansas lies between high pressure to the southeast and a trough to the northwest on Monday. Gusty winds and some WAA will allow highs to reach into the low 60s.
221 AM CST Sun Nov 19 2017 Winds have relaxed a little behind the cold front early this morning, but the surface pressure gradient will continue to allow winds of 10-15 mph during the day today. With cold air in place aloft behind the upper trough, temperatures will not recover too much today, with most of the area seeing highs in the 40s. Hopefully the drier air and eastward progression of the upper trough will erode clouds from west to east a bit faster, but for now, have clouds for most of the mid state this morning, and into the afternoon for the Plateau.
354 AM CST Sun Nov 19 2017 09Z/3 am surface analysis shows a strong and still deepening 983 mb low pressure just east of Lake Ontario while 1033 mb high pressure was over the central Rockies and ridging into the central and southern plains. The latest HRRR and Hi Res Rapid Refresh model runs are similar in handling these low clouds fairly well, and gradually decrease these clouds from west to east from mid morning into early afternoon as deep upper level trof over eastern parts of the Great Lakes and Ohio valley pulls further away from IL into the Atlantic states by sunset.
1227 AM EST Sun Nov 19 2017 A cold front will move rapidly across the region tonight with scattered showers and breezy conditions. A dry and cooler air mass will build over the area Sunday and Monday. Moisture will return mid to late week as the weak low pressure develops over the Gulf of Mexico. A positively tilted upper trough over the Mississippi Valley will move across the region overnight and into Sunday. The trough will push a cold front through the area late tonight. Daytime highs will be mostly in the lower 60s with downslope flow offsetting cold advection somewhat. Temperatures near freezing in some areas Sunday night especially northern and central counties. Dry and cooler air mass over the area Monday with temperatures ranging from around 60 north to the lower 60s south.
The mid/upper pattern will gradually amplify this week with a strong ridge centered west of Texas and a deep trough over the eastern U. This pattern will bring a reinforcing cold front through Tues night/Wed morning.
234 AM EST Sun Nov 19 2017 Much quieter and cooler weather is in store to close out the weekend. High pressure will build across the southeastern CONUS tonight and southerly return flow will set up across the lower Ohio Valley by Monday morning.
353 AM CST Sun Nov 19 2017 H5 analysis from earlier this evening, had a low located over western Hudson Bay with a trough extending south into the Great Lakes and Ohio Valley. West of this feature, a low amplitude ridge of high pressure extended from central California north into southwestern Canada. Winds will shift around to the southwest this afternoon, pushing warmer air into the forecast area. This coupled with clear skies, will lead to lows in the lower to middle 20s. Warm air advection will also allow surface temperatures to rise into the low 60s on Monday. Low pressure will track across southern Canada and the northern Great Lakes region on Monday night. This low will drag a cold front across the region.
252 AM CST Sun Nov 19 2017 At 2 AM, a band of MVFR clouds associated with a short wave trough was moving southeast through western Wisconsin.
1133 PM CST Sat Nov 18 2017 Cold front has pushed south of all the TAF airports which has ended the threat of showers, and mainly VFR level cloud cover will be decreasing quickly over the next few hours. /issued 335 PM CST Sat Nov 18 2017/ Our long awaited cold front is pushing through northern Louisiana, as dewpoints in SHV have falling into the mid 40s. Tomorrow, temperatures will warm into to the lower 60s in most locations. Strong cold front continue to advance steadily southeast 24 knots into central Louisiana this afternoon.
1250 AM EST Sun Nov 19 2017 A cold front will cross central North Carolina early this morning.
The previously advertised cold front has finally pushed well to the east of this region, unfortunately with some fanfair. The main event came with the cold front and a Quasi-Linear Convective System like line of shower and a few thunderstorms. But with much colder air invading from the NW, High temperatures on Sunday will struggle into the upper 40s, a good 20-25 degrees cooler than today. Only locations near large bodies of water may be spared freezing temperatures, or at least will "only" cool to around 32 degrees. A tad warmer is expected on Monday with highs in the mid 50s.
/ISSUED 852 PM CST Sat Nov 18 2017/ With the cold front now through the area, expect temperatures to continue to fall for the remainder of the evening and overnight hours (today's low temperatures will officially occur right around midnight). Cooler temperatures will persist from tonight on through all of the upcoming week.
1248 AM EST Sun Nov 19 2017 A strong cold front will cross tonight bringing strong winds and a changeover to snow showers by early Sunday morning. Cold front currently draped along a line running from Clarion to just east of Pittsburgh. Wheeling saw the highest gusts at 11:22PM when 51mph was observed by the ASOS. Wind advisory will continue for the ridges where more widespread gusts of >=46mph are more likely with frontal passage during the next couple hours.
221 AM MST Sun Nov 19 2017 Water vapor shows upper ridge over the western CONUS with NW flow across the Northern Plains. Broad trof at the surface over the Northern Plains with dry w/sw flow. Persistent upper ridge over the western CONUS expected through the week, bringing mainly dry and mild conditions to the region. One exception to this will be a clipper system that drives a cold front through the cwfa late Monday.
355 AM CST Sun Nov 19 2017 Sfc observations currently show the cold front which passed the forecast area last evening has now moved off the sern LA coastline and lies well beyond the marine zones this morning. Main story into tomorrow will again be the much cooler temperatures as highs each day are expected to top out in the lower/mid 60s (as opposed to our recent maxes around 80).
120 AM EST Sun Nov 19 2017 A strong cold front will push through the region late this evening. High pressure and a much cooler airmass will settle into the region for Sunday into Monday. Expect lows to range from the lower/mid 30s west to the mid/upper 30s east.
A subtle 700hPa trough shifting southeastward across the CWA during the evening hours will likely enhance convergence into this band via backing surface flow. Then, a somewhat stagnant pattern with persistent deep troughing near and over Hudson Bay will result in primarily west to northwest flow across the Upper Great Lakes into the weekend.
432 AM EST Sun Nov 19 2017 Water vapor imagery highlights a broad mid-upper level trough digging southeast through the Mississippi River Valley (MRV). Surface observations, regional radar loops, and infrared satellite imagery place a cold front from near the panhandle of Florida, west- southwest through the central Gulf of Mexico. The ridge axis which was across northern Florida yesterday at this time, is now nearly across the Florida Keys. The cold front across the Gulf of Mexico will press southward today and tonight, eventually stalling very near the Keys early Monday morning. Meanwhile, high pressure currently centered near the Texas Panhandle will work quickly eastward, reaching the Carolina coastline by Monday evening.
This with clear skies and the dry, cold air mass in place should result in many locations reaching near freezing tonight. /issued 247 PM CST Sat Nov 18 2017/ (Tonight through tomorrow) (Tonight) The cold front has pushed through the area, and based on latest observations, winds have continued to weaken over much of the area, allowing for the Wind Advisory to expire. An area of high pressure will move south across the panhandle this afternoon and settle across the Big Country during the evening. Clear skies with winds going calm across these ares will allow temperatures to drop into the low 30s.
1127 PM CST Sat Nov 18 2017 Skies have cleared through the day with strong subsidence behind the upper trough exiting to the southeast. With high pressure spreading across the area tonight and Sunday, quiet weather is expected.
1145 PM CST Sat Nov 18 2017 The synoptic pattern early this afternoon features a sharp trough carving out across the Great Lakes and Midwest region. The surface cold front has pushed well off to the southeast, allowing a much cooler airmass to filter in on gusty northwest winds. Surface ridging will move into the central part of the country by Sunday afternoon. KD Southwest flow on Monday ahead of the next trof is expected to warm temperatures back up above normal.
208 AM MST Sun Nov 19 2017 Imagery now shows ridge/trof pattern, west to east, across the CONUS. Today: Northwest flow aloft and high pressure continuing across the west with interact with lee troffing east, maintaining gusty west to southwest winds over the usual spots. Tonight: A stronger wind pattern with a better chance for High Wind conditions across the Absaroka Mountains and Cody Foothills will occur tonight with strong SFC P, T, and Omega Grads under increasingly favorable mountain wave production aloft ahead of the next approaching very strong jet(120-150kt)/SW trof. Otherwise, only modest moisture is expected with this system as it moves through/over a ridge into the western FA.
KTRI has also broken the high temperature record (75 set in 2014). KCHA has seen more cloud coverage so the record is safer there (78 set in 1986), where they're currently in the lower 70's. Part of the increase in temperatures is the stronger winds out of the south to southwest bringing in much warmer air. An upper ridge will remain positioned over the southeastern U.
BUFKIT profiles stay mostly saturated all day, with a broad upper trough to the west migrating east with a noticeable PV anomaly and wave evident upstream. Energy aloft is expected to continually reload the western conus trof, with that energy then ejecting east across the Rockies and into the plains.
Lots of low temps in the low teens and single digits.
A trough of low pressure will likely persist over the West Coast through the next seven days, supporting below normal temperatures with showers possible at times.
224 PM MST Tue Feb 20 2018 Deep trough over the West with an upper ridge off the East coast will continue with some flattening. Mid and high level clouds will move through tonight and early Wednesday with a weak cold front approaching the area.
Will let the rest of the area continue due to more reports of freezing drizzle over the eastern WI on the northern edge of the convection sling over SE WI. and Wednesday Low pressure moving slowly across the state will produce one more round of significant precipitation this morning, and it will arrive right when most people are going to school or work.
The increase in the low level jet and daytime heating has allowed some scattered showers to develop, mainly across northern portions of the forecast area. Over the next few days, a broad upper level trough over the western US will eject energy eastward and help push a cold front to the fringe of the northwestern portion of the forecast area on Wednesday.
UPDATE Radar returns continue to dissipate as high pressure builds east across the local area. Slow moving, longwave upper level trough across the western US and associated jet streaks moving across the Northern Plains in southwest flow will slowly shift toward the Great Lakes region. Models are in decent agreement with maintaining trough over the western US through the remainder of the work, placing the Northern Plains in southwest flow aloft.
Will continue the advisory where patchy freezing drizzle continues.
/issued 331 AM EST Tue Feb 20 2018/ TODAY AND TONIGHT: Disturbance crossing the region this morning as it rounds the southwest side of the of the mid-upper level ridge centered to our northeast. The eastern half of the region will continue in the low to mid 80s with breezy east winds.
More warm lows are expected for tonight, ranging mostly in the lower and middle 60s. However, a cold front will be working its way into our extreme northwestern counties by 12z Wednesday, dropping temperatures into the middle 50s at Clarksville by 15z, and down to 52 by 18z. Meanwhile, the southeastern half of the Mid-State will be warm enough, long enough, to allow for highs to top out tomorrow in the lower to middle 70s. The cold front should pass by Nashville around noon, sending temperatures on a slow downward trend thereafter.
216 PM CST Tue Feb 20 2018 For the rest of today and tonight, the area of freezing rain/sleet/snow will shift east. Initially it looked like they would cool down to or below freezing quickly.
The cold front associated with all of this convection will gradually shift through the region shortly after 21/06Z at TYR/GGG/TXK, then followed by SHV/ELD/LFK later Wednesday morning by around 21/15Z.
233 PM EST Tue Feb 20 2018 Dry and warm weather is expected under a high pressure ridge through early Wednesday.
After a brief break from a snow event due to an area of convergence, another trough will begin its approach from the northwest tonight, arriving over the forecast area by Wed afternoon. This is a very weak trough, with little surface development, so no repeat of last weekend's storm. Lesser amounts, 1 to 3 inches, are expected at the highest elevations along the border with Montana, and very little expected south of Palisades Reservoir. A deeper trough develops during the day over the Pacific northwest, digging southward and into Nevada allowing the forecast area to get caught on the north side of the low.
In fact TYS has already tied the high temperature record by 11am this morning, with more warming expected to come. Chattanooga Airport, TN 73 62 78 61 / 10 30 50 40 Knoxville McGhee Tyson Airport, TN 78 61 76 60 / 10 20 40 40 Oak Ridge, TN 77 61 76 59 / 10 20 50 60 Tri Cities Airport, TN 78 55 76 56 / 0 10 40 40.
/Issued 508 AM CST Tue Feb 20 2018/ Our cold front continues to surge southward for the start of the 12Z TAF cycle. A cold front draped across the northern Panhandles is bringing temperatures in the upper teens to lower 20s in the northern Panhandles, to the 50s to near 60 in the southern Panhandles. Lee side troughing, still active in New Mexico this morning, may help keep southwesterly winds going across the southwestern Panhandles, which could slow forward progress of the arctic front.