Aikyam-Lab/Synoptic-Bench huggingface dataset:
400 AM CDT Fri Nov 3 2017 A cold front is draped over the southern plain states and extends as far south as Texas. North of the cold front temperatures are in the 30s and 40s with some upper 20s across the northern tier of the US. As funny as it sounds Lake Charles is warmer than Miami with Beaumont holding at the same temperature as Miami. Generally this would be enough to give us a few more storms but weak ridging aloft will hold this in check.
Then, a cold front approaching from the northwest will generate more widespread rainfall from Friday afternoon into Saturday, with most rain expected Friday night.
417 AM CDT Fri Nov 3 2017 (Today and Tonight) A cold front has moved south to near a San Angelo to Brownwood line.
Southwest parts of the forecast area expected to reach the lower- to mid-70s.
The main low pressure system in Washington is sending spokes of precipitation that have been resulting in moderate to heavy snow rates, and there is also a steady stream of moisture from central Idaho into southwest Montana resulting in continuous mixed precipitation at low elevations and snow elsewhere. The cold front should reach the Camas Prairie of north-central Idaho during this morning and bring a quick change to snow, so roadways are likely to become slick down to around 3000 feet including Grangeville this morning.
104 AM EDT Fri Nov 3 2017 Aviation A wave on the frontal system moving through the area this evening will bring the risk of thunderstorms near I-94, east of Battle Creek, otherwise any lingering shower activity should come to an end by midnight as cooler and drier air move in behind the frontal system.
445 AM EDT Fri Nov 3 2017 A cold front will continue to move through the region this morning. A warm front will lift northwards on Saturday.
320 AM MST Fri Nov 3 2017 Weak high pressure will build across the Southwest with a slight warming trend this weekend.
Temperatures this afternoon will likely be muted/slightly cooler due to increased cloud cover.
Southwest flow aloft ahead of an upper trough will continue to bring bands of precipitation across the area today. As the trough shifts closer to our area, precip will become widespread across the remainder of southeast Oregon and southwest Idaho today. A cold front associated with the trough will track southeast across the area this afternoon through tonight. Temperatures will be slightly cooler today, and 5-15 degrees cooler on Saturday with valley highs only in the upper 30s to upper 40s. A longwave upper level trough will maintain cool and unsettled weather.
An anticyclone centered over Georgia and the Carolinas will block out an inverted trof NE of the Bahamas from advancing toward the FL Peninsula. Position of the ridge will maintain a stout H85-H70 subsidence inversion over central FL.
Will shoot for highs ranging from the mid 40s east (under the low clouds) to the mid 50s west. For Saturday night focus shifts to a return of low clouds and some fog moving in from the northeast behind a cold frontal passage.
134 AM EDT Fri Nov 3 2017 A cold front will track across the remainder of northeast Indiana and south central Lower Michigan through the early overnight hours.
346 PM MST Wed Nov 8 2017 Low clouds and some fog were still hanging tough over the lower elevations of southern El Paso county and northern Pueblo county. The cool front will bring another shot of slightly cooler air to the the far eastern plains, and max temperatures this region will only reach into the 45-50F range. Farther west along the I-25 corridor it will be a bit warmer than today with reading in the mid 40s to mid 50s.
Diminishing high pressure over the area will lead to light low level winds but skies won't be crystal clear like previous nights.
601 PM EST Wed Nov 8 2017 High pressure should maintain dry weather through Thursday.
The evening local sounding showed slightly less moisture in the lowest levels.
953 PM CST Wed Nov 8 2017 Areas of RA that continues this evening over portions of lower E TX/N LA/Scntrl AR ahead of a well-defined upper trough noted on the water vapor imagery over NW AR/SE OK/Wcntrl TX, continues to gradually shift ESE, as dry slotting noted in the Channels 9 and 10 water vapor imagery has begun to entrain SE. Still seeing sporadic reports of -DZ which has resulted in reduced vsbys associated with the low stratus shield over extreme NE TX/SW AR where the RA has ended, and thus have maintained slight chance pops this evening for these areas before the cigs begin to lift/scatter out late. This diminishing cloud cover should result in cooler temps tonight over SE OK/SW AR, where min temps should fall to near 40 degrees by daybreak.
646 PM EST Wed Nov 8 2017 High pressure will extend across the region into Thursday. A cold front will sweep across the area Thursday night. Canadian high pressure will build in for the end of the week.
920 PM EST Wed Nov 8 2017 High pressure will extend across the region into Thursday. A cold front will sweep across the area Thursday night. Canadian high pressure will build in for the end of the week.
545 PM EST Wed Nov 8 2017 A ridge of high pressure will keep us dry through Thursday.
/issued 242 PM CST Wed Nov 8 2017/ Low amplitude trof axis extends from n central Mexico to newd all the way into PA.
450 PM MST Wed Nov 8 2017 Current surface analysis shows cold front stretching east to west across far southern SD and northern WY. Upper level analysis shows weak ridging over the Rockies, with west-northwest flow across the Northern Plains. Cold front will push south of the forecast area by early evening, with colder conditions expected through Thursday. Lows tonight will mostly be in the teens, with highs on Thursday ranging from the low to mid 20s across far northwest SD to the upper 30s over parts of northeast WY.
The exceptions will KROW, which is likely to go down to MVFR conditions as the low ceilings to the south will surge northward through the Pecos Valley. Some models guidance is bringing the low clouds and ceilings as far north as TCC, but at this time MVFR conditions are expected to stop just south of TCC.
Colder spots in Malheur county have a slight chance of freezing rain which will be localized and short lived Thursday morning. Temperatures will reach the low 40s in the lower valleys to mid 30s across much of Southeast Oregon overnight.
613 PM EST Wed Nov 8 2017 Issued 425 PM EST Wed Nov 8 2017 Clouds will increase late tonight into Thursday as a strong cold front approaches.
350 PM MST Wed Nov 8 2017 Weak ridging continues to build in as temperatures are running about 5 degrees cooler than yesterday. Expect morning lows to be warmer than we've seen recently due in large part to those clouds. Flow becomes more zonal on Thursday as a broad area of high pressure sets up to our south and the next low pressure system approaches the northwest.
Chattanooga Airport, TN 48 61 40 59 / 80 20 0 0 Knoxville McGhee Tyson Airport, TN 46 57 37 52 / 50 20 0 0 Oak Ridge, TN 46 59 37 54 / 30 10 0 0 Tri Cities Airport, TN 45 56 34 48 / 30 10 0 0.
830 PM EST Wed Nov 8 2017 High pressure will retreat into New England, as a weak area of low pressure passes south of Pennsylvania tonight into Thursday.
/issued 316 PM CST Wed Nov 8 2017/ SHORT TERM (Now through Thursday Night): Forecast becoming more muddled with time with 12Z GFS/NAM models changing their tune on the outcome of the cooler air and rain chances (ECMWF is the most consistent). This keeps most of the CWA on the drier side while the ECMWF keeps the trough closer to the coast.
630 PM EST Wed Nov 8 2017 A wedge of high pressure will remain in place through Thursday bringing low clouds and cooler temperatures to the area.
627 PM EST Wed Nov 8 2017 High pressure over the area will sag off to the southeast tonight then an arctic cold front will drop southeast through the region Thursday.
Mostly clear conditions and light winds across Northeast Oklahoma and Northwest Arkansas will continue to spread southward over the CWA tonight as an upper level trof axis moves through the region. This clearing is expected to continue to spread to the south and east this evening and into the overnight hours as the mid-level trof axis that currently extends from northeast Oklahoma into southeast Oklahoma shifts southeast. Below freezing temperatures will be possible across portions of northeast Oklahoma and northwest Arkansas that have already have had a hard freeze this season.
There are a few light snow showers upstream over northern MN along the cold front. A period of MVFR ceilings is likely later tonight into Thursday morning as a cold front moves through. Cold advection will then be pronounced for Thursday as front will be off to the east and northwest winds will usher in a chilly low level thermal trough.
524 PM CST Wed Nov 8 2017 Warmer, slightly more seasonable conditions this afternoon will be replaced by a fast-moving cold front Thursday morning, and while sunshine will allow for a few degrees of diurnal rise tomorrow afternoon, cold-air advection will hold highs in the lower to mid 40s.
Temperatures are currently in the low 50s in the north to low 60s along the coast, with dew points in the upper 40s to mid 50s across SE TX. These clouds will act as a blanket, helping to keep our temperatures warmer than what they could have been had the skies been clear. Winds will also stay elevated, around 5 to 10 mph tonight across the region, with a tighter pressure gradient in play at the surface following behind yesterday's cold front.
730PM UPDATE: Changes to the forecast this evening was first focused on the increasing chances for freezing fog across the region. GAH PREVIOUS SHORT TERM DISCUSSION: Cold front moved through the CWA today without much snow.
1051 PM EST Wed Nov 8 2017 High pressure will retreat into New England, as a weak area of low pressure passes south of Pennsylvania tonight into Thursday.
The advertised cold front has pushed through most of the region this afternoon and winds have turned north and northeast across the forecast area. Believe the hi-res models are a little too moist so have left freezing drizzle out of the forecast tonight, but low clouds and some patchy fog is possible tonight, especially along the mountain foothills and in eastern Montana. Warmer air will begin to advect into Sheridan county and the rest of north central Wyoming so expect temperatures near 40 there. Foothill locations will be warmer and in the low 30s as we begin to see the wind increase over the foothill regions.
520 PM CST Wed Nov 8 2017 Arctic high pressure centered over the western Plains of Canada. Hudson Bay low at h5 with ridge between aforementioned low and Gulf of Alaska low. Cold front from southern plains follows coast northeastward along the east coast. Quiet conditions are expected for north central Nebraska as a strong upper level ridge builds across the western US resulting in high pressure across the central US. Expect highs to only reach into the mid 20s across the northeast forecast area (O'Neill area) to the low 40s south of I-80. low temperatures will hold in the low to mid 20s.
Mid-afternoon satellite imagery showed a mix of sun and clouds across southern Indiana and central Kentucky while regional observations had northeasterly winds and readings in the lower to middle 50s. Through tonight, high pressure will slowly nose into the lower Ohio Valley and skies should go mostly clear to clear overnight. This will setup a chilly night with overnight temperatures falling into the lower to middle 30s. Look for mostly sunny skies and slightly warmer temperatures Thursday ahead of an approaching cold front. With a brisk and chilly wind, lows Thursday night will range from the middle 20s to around the freezing mark.
525 PM CST Wed Nov 8 2017 The warmer weather we've experienced today will be replaced by much cooler weather tomorrow. The next strong cold front racing southward through the Dakotas will reach northeast NE this evening and just north of I80 through midnight, then into KS and the IA/MO border by Thursday morning. Still breezy in the morning, but winds gradually relax in the afternoon as high pressure builds in from the north.
553 PM CST Wed Nov 8 2017 There are a few light snow showers upstream over northern MN along the cold front. A period of MVFR ceilings is likely later tonight into Thursday morning as a cold front moves through. Cold advection will then be pronounced for Thursday as front will be off to the east and northwest winds will usher in a chilly low level thermal trough.
Meanwhile a warmer sw flow aloft should increase snow levels in our eastern mountains where mainly liquid pcpn can be expected except for elevations above 5k feet where snow is likely into Thursday.
743 PM EST Wed Nov 8 2017 A ridge of high pressure will keep us dry through Thursday.
/22/ Tonight through Thursday: Latest Rap and Satellite imagery showed flat ridging through the atmosphere.
For 00z Aviation discussion below A strong cold front will move through the region tonight and bring the coldest air of the season to Minnesota and Wisconsin. Early afternoon satellite imagery showed a broad upper level trough over central Canada with subsidence and northwest flow over the high Canadian prairies.
Late tonight, a backdoor cold front is expected to move in almost to the Denver metro area. This could lead to a chance of freezing fog on the northern plains due to higher RH and dropping temperatures tonight through mid morning Thursday.
Weak upper trough axis expected to work across the mid-state overnight and that will push current light precip well east. As the high moves east this should go SKC after 06Z.
436 PM MST Wed Nov 8 2017 Weak ridging continues to build in as temperatures are running about 5 degrees cooler than yesterday. Expect morning lows to be warmer than we've seen recently due in large part to those clouds. Flow becomes more zonal on Thursday as a broad area of high pressure sets up to our south and the next low pressure system approaches the northwest.
707 PM EST Wed Nov 8 2017 Low pressure tracks across southern areas this morning. Strong cold front late Thursday/Thursday night.
905 PM EST Wed Nov 8 2017 High pressure should maintain dry weather through Thursday.
Will see warm advection return to the area for tonight through most of the daytime hours on Thu, at least for the southern half of KS, with low temperatures a little warmer overnight. This will probably lead to slightly cooler temps for central KS on Thu, but some compressional heating south of the boundary will lead to max temps similar to today for most of southern KS. The warm advection will also increase the low/mid level moisture, which will increase cloud cover on Sat, which will temper the warmup somewhat. However there is a remote chance per NAM/RAP of a narrow band of MVFR height clouds behind the cold front moving across entral KS around noon.
High pressure overhead lead to light/vrb winds through remainder of overnight through late morning. Clockwise flow around the high has veered winds northeasterly this afternoon across South Florida. Maximum temperatures, similar to yesterday, have struggled to reach the low to mid 70s. Thus, minimum temperatures, although still below average, will be around 5 degrees warmer than last nights.
The temperatures have warmed to the lower 70s and relative humidity is in the 20 to 25 percent range. Expect there to be some showers as the upper low moves through the area. On Friday, the low moves to the east and there will be a little cooler air moving into the area. As the temperatures cool off Friday evening, there could be a mix of some rain or snow, but there is also a small chance that there could be a little freezing rain. The period for any freezing precipitation should be rather narrow and it should be mostly rain mixing with or changing to snow for the northwest part of the forecast area. This should clear things out and keep some cooler temperatures across the area.
A ridge of high pressure will extend further south through the Northland into Friday. Mostly clear skies will persist under the influence by this high pressure system. Tonight will be colder with lows from the low single digits above zero to 10 above. Friday will continue to be under mostly clear skies and it will be a bit warmer with highs from the mid thirties to lower forties. Friday night will be slightly warmer in the low to mid teens under clear skies influenced by this persistent high pressure.
With persistent warm advection in place tonight, low temps will be slightly warmer than this morning, generally ranging from the low 50s across the southern counties to the mid 30s across northeast Missouri, north of the warm sector. A thermal gradient north and south of the warm front will develop from northwest Missouri to central Missouri, resulting in afternoon highs in the upper 60s and lower 70s south of the front, with values in the low 40s further north. More benign conditions will return to the area Saturday, with much cooler temps expected in the wake of the departing storm system.
322 AM MDT Fri Mar 16 2018 Quite the low pressure system that moved through the area to our southeast over the past 12-18 hours. Warming cloud tops seen on IR imagery for areas west of the Laramie Range with cooling cloud tops along and northeast of a line from Bridgeport to Douglas.
Surface and upper ridging will move east of the area through the period with increasing high and mid level clouds. Surface ridging Friday will keep winds generally below 10kts.
A stalled warm front will be near central Missouri draped down into southeast Missouri where temperatures south of this boundary will be much warmer than northeast of this boundary. A strong low pressure will move across the Central U. High-res models show a ribbon of limited instability arching from southeast to northwest across the Missouri Ozarks this afternoon with surface dewpoints in the lower to middle 50s. The entire system moves out of the area by late this evening with cooler weather moving in behind it. Saturday will be cooler with weak high pressure building in.
120 AM EDT Fri Mar 16 2018 A strong area of low pressure over the Northeast U.
345 AM CDT Fri Mar 16 2018 A variety of weather impacts are expected today and tonight thanks to a strong low pressure system moving through the area. WV imagery shows that this system is nearly vertically stacked with the center of the upper level low centered over northwestern Kansas. Mesoscale models (NAM/HRRR/RAP) all tend to develop an area of dynamic cooling on the backside of the low late this afternoon. The forecast quiets down for Saturday thanks to midlevel ridging, with light winds and temperatures rebounding into the 40s and 50s.
Can't rule out a few isolated locations seeing 10 inches along the higher hills in this corridor. Folks traveling east towards the Dakotas today will want to pay close attention to the weather conditions this as difficult travel conditions are likely to develop in eastern Montana, especially along the higher hills like the Hysham Hills, Lame Deer Divide, and other similar areas.
357 AM CDT Fri Mar 16 2018 An upper level trough is currently coming out of the Rockies and will be tracking east through the Central Plains today. A cold front associated with this trough will reach down to the CWA during the afternoon hours. The boundary itself doesn't look very impressive but it will bring cooler mid level temps.
637 AM EDT Fri Mar 16 2018 A cold front approaching from the north will stall near the north part of the forecast area tonight.
The rather paltry flow is the result of flat low to mid level flow which is due to tightly wrapped surface and upper level low presure that scoots through Kansas today while weakening steadily. The low decks may be stubborn through noon or 1 PM, but drier air overspreading from west to east along with plenty of warm sunshine should erode the low decks, leaving VFR scattered for the balance of the afternoon.
251 AM EDT Fri Mar 16 2018 High pressure nosing in from the north behind this morning's cold fropa will keep us dry today, though mid and high clouds will gradually increase as the day goes on. Temps have overachieved the past couple of days, so will go a bit warmer than guidance might suggest, with highs mostly in the 50s. Tonight the former cold front will drift back north as a warm front into Kentucky while its parent low follows I-70 from Topeka to Saint Louis.
335 AM CDT Fri Mar 16 2018 Stalled warm front across southern portions of forecast area to remain anchored in this area, while spotty WAA showers continue to track east north of boundary across eastern MO and west central/southwest IL through 09z. For now highs will range from the low 40s over northeast MO, as well as west central and southwest IL, while mid to upper 50s expected over portions of central and southeast MO. Byrd Rain showers will taper off on Saturday morning while the weakening PV anomaly responsible for the pcpn simultaneously moves away from the region and continues diminishing in part due to the increasing large-scale subsidence from an upper ridge building across the central CONUS.
Regional satellite imagery showed quite a bit of low topped convection developing in response to a large upper level trough across western Colorado and eastern Utah.
Cooler temperatures, gusty winds, and isolated light showers across the region today.
117 AM EDT Fri Mar 16 2018 Periodic snow showers and cold temperatures are expected into the afternoon under upper level low pressure. Any remaining snow showers, generally over the I-80 corridor and ridges will dissipate, and cloud cover will decrease from west to east.
345 AM CDT Fri Mar 16 2018 Upper trough crosses Rockies today becomes a closed low early as the next low reaches the CA/OR coast.
348 AM MDT Fri Mar 16 2018 Water vapor imagery showing strong upper low over Western Kansas this morning and moving east and northeast. Surface temperatures are hovering in the upper and upper 30s and northwest winds and downslope flow keeping temperatures above freezing. Conditions will improve over the entire area this evening with diminishing winds on the plains and clearing skies as high pressure builds in with subsident flow. Water vapor imagery showing strong upper low over Western Kansas On Sun an upper level trough will move into the Great Basin in the morning. By aftn it will become more negatively tilt which will eventually allow for a closed upper level low to form over srn CO.
High pressure continues to drift east from the Upper Midwest/Central Canada, which will steadily erode the lingering shallow moisture and bring an end to the lake-effect snow showers across central/eastern UP this afternoon. Have held onto the current forecast lows of single digits below zero across the west and some areas of the higher terrain across central UP. Further east, it apppears clouds will linger and thus help to hold temps up in the single digits above zero to perhaps the lower teens. High pressure will be positioned overhead Fri, allowing a very light pressure gradient to produce light to calm winds from the west/northwest. High pressure will remain over the Upper Great Lakes through Saturday.
High pressure ridge currently across the area will move off to the east. Low pressure over eastern Colorado will track east across the central plains and middle Mississippi valley Friday and the Ohio valley Saturday.
Another upper low will return the chance of showers to the forecast for the weekend.
400 AM EDT Fri Mar 16 2018 Periodic snow showers and cold temperatures are expected into the afternoon under upper level low pressure. Any remaining snow showers, generally over the I-80 corridor and ridges will dissipate, and cloud cover will decrease from west to east.
Subsidence behind the departing Texas trough, the lack of large scale forcing for ascent, a rather stout capping inversion, and weak convergence along the surface boundary are expected to greatly limit thunderstorm development.
Tonight through Saturday High pressure centered along the gulf coast and corresponding southwest flow has resulted in a very pleasant mid March day across the state. Weak upper ridging currently over eastern Oklahoma will be flattened out by the aforementioned approaching low and an upper level disturbance moving through.