Aikyam-Lab/Synoptic-Bench huggingface dataset:
1006 PM EDT Tue Oct 17 2017 Low amplitude troughing is working across the northern Great Lakes region this evening. Breezy and warmer on Wednesday. Great Lakes remain locked between strong high pressure centered over the Ohio Valley and strong low pressure centered over James Bay. A moisture starved cold front will move through northern Michigan late Wednesday night.
756 PM EDT Tue Oct 17 2017 An upper level ridge will build into the region and bring mild temperatures to the area over the next several days. Highs in the 65 to 70 degree range will moderate into the lower to middle 70s by this weekend.
These is very dry air moving in behind the cold front with dew points dropping down into the teens. We should also see high clouds thicken up ahead of the warm front set to move in tomorrow.
913 PM EDT Tue Oct 17 2017 High pressure remains over the Mid Atlantic region through the remainder of the week with temperatures gradually moderating.
904 PM EDT Tue Oct 17 2017 High pressure will hold south of New England tonight through Wednesday.
424 AM EDT Mon Sep 4 2017 Weak high pressure through Labor Day. Strong cold front midweek. High pressure with drier and cooler weather behind front for the balance of the week. Weak high pressure remains in our vicinity today, but will slide east this evening as a cold front approaches from the NW. Warm air advection today with weak SW flow will send temperatures up into the low to mid 80s across the Lowlands today. Clouds will be on the increase tonight and also have PoP increasing from the NW by early Tuesday morning as a strong cold front approaches and dissipating MCS out ahead of the front enters our region. The cold front arrives along the OH River by 12Z Tuesday.
341 AM MDT Mon Sep 4 2017 A strong Canadian cold front approaching from the northeast is bringing gusty north and east winds of 25-35 mph this morning. Slightly cooler maximum temperatures will be felt for mainly western Montana as this front stalls across the area today, but readings will still remain well above normal for this time of year.
317 AM MDT Mon Sep 4 2017 Starting to sound like a broken record as high pressure remains in control bringing similar weather to what we've seen over the last several days. Hot conditions remain under the high while afternoon heating and instability allow some showers and storms to fire over the San Juans with a few possibly popping over the central mountains as well.
335 AM CDT Mon Sep 4 2017 (Today and Tonight) It will be warm and dry today with high pressure aloft bringing subsident conditions.
In the upper levels, ridging will build out across the western United States while a trough develops and starts to dig south into the Great Lakes region. This trough will dig further south into our area come mid- week, which will send a cold front our way at that time as well. /28/ For the beginning of the period a strong fall like amplified trough will be developing into the Lower Mississippi Valley.
/Today through Tonight/ Highly advertised cold front had entered far northwest Iowa by 3 AM and will continue to push across the state. Tonight, an upper trough will push south and begin to deepen as it heads into the Great Lakes region while high pressure at the surface wedges in. A band of vorticity tied to the trough pushing in will produce a second band of mid/high clouds that will push across the state mainly this afternoon/evening.
329 AM CDT Mon Sep 4 2017 Much cooler temperatures the next several days is the main highlight of the forecast through mid week. Current northwest flow from western Canada into the Mid Atlantic will buckle, with a deep longwave trough extending from Hudson Bay into the southeastern U.
552 AM CDT Mon Sep 4 2017 Upper ridge is currently centered over the central Great Basin with northwest flow over the central/northern Plains. At the surface, cold front stretches from central MN into nw Nebraska with a trough situated east of this feature. Strong cold front will continue to be the main story today and tonight as it continues to push south. The bigger story with this front will be much cooler fall like temps for Tue into Wed. A cold front will sink southward across the region for today with northerly winds increasing behind the front.
Northwest flow continues aloft at the start of the period with an upper trough over the east coast and ridging across the western CONUS.
KDHT and KGUY will be closer to a pre- frontal trof so winds are expected to gradually veer to the north and northeast through the day. The main cold front with increased wind speeds is not expected to enter the Panhandles until after this forecast period. These warm temperatures are a prelude to a cold front expected to push through the area late Monday night into Tuesday morning. Another item to note with the cold front is the increase in wind speeds behind the front.
A much more significant upper wave will dig into the Upper Midwest today, with a sharp surface cold front arriving in central Indiana by 00z this evening. Showers and thunderstorms developing in central Indiana along the cold front this evening will likely become a squall line. Highs Tuesday will be in the low to mid 70s.
and Tuesday A cold front were moving across central Wisconsin at 09z. The coldest part of the upper trough drops south across the region Tuesday, which should produce scattered showers over the entire area.
Although wind speeds will remain fairly modest (5-15 mph), there will be enough downslope component on top of the minor thickness increase to see highs today about 3-5 degrees warmer than yesterday. A cold front is still progged to move through the forecast area early Tuesday ushering in cooler temperatures.
Over the higher terrain 40s and 50s prevailed. There will be a bit better chance of precip across the high country today, with the best chance of showers and storms over the SW mtns. A rather strong cold front will push down the plains this evening and skies are expected to cloud up by late evening. This will allow for much cooler maximum temperatures(primarily over eastern sections) Tuesday with maximum temperatures over eastern sections running some 20F to 25F cooler over many locations when compared to Labor Day Monday. Over western portions of the forecast district, maximum temperatures on Tuesday should generally run around 5F cooler on Tuesday as compared to Labor Day Monday.
08Z surface analysis shows a strong cold front from near Ashland, WI to St. Temperatures today will be 5 to 10 degrees cooler than yesterday, topping out mainly in the 70s. In the wake of today's wave, 925 hPa temperatures will begin to fall tonight, ushering in a much cooler air mass.
601 AM EDT Mon Sep 4 2017 High pressure will build south of the area today.
Morning surface analysis shows a area of high pressure resides to our southeast and we in weak southerly flow around the high. All eyes then turn to the spoke off a larger upper levels trough across Canada that will swing toward the Ohio Valley the the period. Ahead of this amplifying upper level system will be a cold front and that will be the primary weather maker moving into Monday night and Tuesday. An unusually deep upper trough will be bottoming out over the eastern CONUS early in the period. A cold front associated with the trough will be exiting to the southeast as the period starts.
1123 PM MDT Sun Sep 3 2017 High pressure will remain firmly situated over the western CONUS over the next several days, keeping conditions generally dry and warm. Residual moisture trapped underneath the ridge will continue to be recycled each afternoon, resulting in isolated to scattered showers and thunderstorms over the higher terrain. For Tuesday, the continued area of high pressure will be sandwiched between two upper level troughs - one located over the Pacific Ocean and the other, much stronger trough digging into the eastern CONUS. After the midweek point the high will begin to shift to the southeast as the aforementioned Pacific trough moves inland.
134 AM EDT Mon Sep 4 2017 High pressure builds over the area tonight, then slides offshore Monday through Tuesday.
A broad upper trough over the Lower Mississippi River Valley and Southeast narrows as an upper ridge builds west over the eastern Gulf of Mexico.
315 AM EDT Mon Sep 4 2017 High pressure will build south of the area today.
Weak high pressure will continue to dominate at the surface today.
317 AM EDT Mon Sep 4 2017 Low pressure will depart well to our northeast today while weak high pressure ridging moves overhead. A cold front will approach from the northwest tonight and will gradually stall over the area on Tuesday.
A strong cold front will move through lower Michigan Monday afternoon and bring potential for thunderstorms mainly near to south of I-96 by mid to late afternoon. It will become much cooler behind that system for mid to late week. A cold front will move in from the nw across our fcst area on Labor Day. It will turn much cooler behind the system Tuesday and scattered instability/lake effect rain showers will develop by Tuesday afternoon as h8 temps fall to around -4 to -5 C by then.
High pressure over the area will continue warm and generally dry conditions across the area, with another opportunity for locations to approach record high temperatures.
128 AM EDT Mon Sep 4 2017 Weak high pressure through Labor Day. Strong cold front midweek. Cooler behind front for the balance of the week. Weak high pressure lingers through Monday. A strong cold front approaches Monday night. Moisture will be on the increase Monday night into Tuesday as a cold front approaches from the west.
It appears the forecast is on track as the ridge ends up re-centered over western Idaho, and a storm continues to drop south east of the Divide. It appears we will stave off any risk of choppy conditions on American Falls Reservoir even with the lower threshold during a northeast wind pattern.
A strong cold frontal passage will occur on Monday, first over the northern zones in the morning, and then reaching the I-80 corridor during the early afternoon. Increasing low-lvl gradients will help promote gusty winds, and temperatures will be significantly cooler as H7 temperatures fall to an average of around 8 deg C across the CWA by 00z Tuesday. Areas north of the Platte River Valley may see highs as much as 20 degrees cooler than today! Overall chances for precipitation will remain minimal on Monday, but a few showers and storms may develop in the Kimball/Sidney areas late in the day, or overnight.
Cooler temperatures with clearing is expected this afternoon.
Above normal temperatures are expected today and Tuesday due to upper level ridging and abundant sunshine. A cold front will push into the area Tuesday afternoon providing a focus for thunderstorm development stretching from southeast New Mexico across the Permian Basin.
635 AM EDT Mon Sep 4 2017 Weak high pressure through Labor Day.
356 AM CDT Mon Sep 4 2017 Cold front working into northwest IA at 08z, and have seen a small- scale blossom of lower clouds immediately around the advancing front from near KMWM and KOTG toward KSHL where lower level moisture has pooled. The story for the day will be the transition to cooler, breezy and drier conditions. Despite drying of the lower levels, the sharp cooling in the mid-levels steepens up lapse rates a touch and allows enough surface-based instability to start thinking a few showers around southwest MN by early to mid afternoon. In the intermediate term, the upper pattern is meridional with a large trough of low pressure carved out over eastern North America, and upper ridging throughout the intermountain west.
319 AM MDT Mon Sep 4 2017 The strong upper level ridge over the western states will shift west tonight as an upper level trough digs south over the Great Lakes. Will have the cooler highs over the far north where the front will push through during the mid afternoon. Upslope northeast winds will result in the best chance for the showers and storms being over the higher terrain west and south of Denver. It will be cooler tonight with lows falling into the upper 40s to lower 50s. The cold front is expected to clear the smoke out of the area this evening. Tuesday will provide a nice respite from the heat behind a strong cold front that moved into the region late Monday. Models have diverged slightly with the GFS trending warmer and the NAM trending cooler.
455 AM CDT Mon Sep 4 2017 High pressure is expected to hold over the region today. Rain chances return with the passage of a cold front Tue night on into the first half of Weds. Still not seeing a lot of return low level moisture/dynamics with FROPA at this time, so the scattered storms will be generally along the cold front itself. Much cooler and drier weather to prevail through the end of the week.
322 AM CDT Mon Sep 4 2017 06Z surface data has the cold front running from northern Wisconsin, to near KFSD, and then into southwest Nebraska. Dew points were in the 50s across the Great Lakes with 60 dew points from just ahead of the front into the lower Mississippi Valley. The cold front should enter the far northwest parts of the area around mid-morning and exit the far east and southeast areas by late afternoon. Well advertised much below normal temperatures still on track for a good portion of the week, as an upper level trough sharpens over the eastern U. while a large upper level ridge of high pressure builds over the western CONUS.
434 AM CDT Mon Sep 4 2017 The latest upper air analysis and water vapor imagery shows a trough lifting northeast acrs New England, while further west, a ridge of high pres was dominant over the southern Rockies and great basin.
1147 PM MDT Sun Sep 3 2017 Water vapor shows large upper ridge covering the western CONUS, with northwest flow aloft carrying smoke through the Northern Plains. At the surface, low is centered over eastern ND with surface trof extending through central SD, and cold front extending into southeast MT. Red flag conditions continue to spread east across the cwfa within the hot/dry airmass ahead of the cold front. Cold front will push through the region tonight, and usher in much cooler air that will continue into the middle of the week as flow aloft becomes more northerly.
Low temps should range through the lower 60s. A cold front will approach the region Mon night bringing a broken line of showers/storms to the region.
320 AM CDT Mon Sep 4 2017 The upper pattern is characterized by northwesterly flow aloft over western and north central NE, with a ridge of high pressure across the western states and a broad trough over the northeastern U.
217 AM PDT Mon Sep 4 2017 High pressure will continue to provide unseasonably hot temperatures through Tuesday with areas of wildfire smoke and haze.
1201 AM CDT Mon Sep 4 2017 Another hot day is anticipated across much of the area on Monday before a strong cold front arrives late in the day and into the evening and overnight hours. Issued at 1200 CDT Mon Sep 4 2017 The sole focus is on the SE progress of a strong cold front that at 05Z extended from extreme Ern SD, thru South-Central Nebraska, to Ern CO. The cold front is a little ahead of schedule & as such have moved its arrival into Central KS up ~2 hours to ~15Z with the front arriving South-Central KS 21-23Z & SE KS Mon eve.
157 AM EDT Mon Sep 4 2017 High pressure will build across the Southeastern States today bringing dry air and near normal temperatures.
Our dominant feature is strong high pressure centered immediately north of the area with a ridge axis orientation from New Mexico through the Pacific Northwest. High pressure should reorient east of our area later in the week.
Do not expect much activity along the fnt, other than cooler temps and some clouds, until late this afternoon. While storm motion shud be ESE, development shud spread swwd with the approach of the upper trof and low level cooling. Prev mdl solns suggested a frontogenetical band of precip behind the fnt as the main trof digs into the area.
Highly amplified upper pattern continues through mid week characterized by strong ridging over the western US and deep troughing over the Mississippi Valley and east coast.
Forecast confidence is medium to high: Low pressure passing by to the north will drag a cold front through southern Wisconsin today. The cooler airmass will continue pushing in overnight, with low temps winding up a few degrees below normal values.
Current surface analysis indicates the cold front that caused the strong thunderstorms last evening extends just south of Ironwood through HYR SE to the Twin Cities.
/issued 335 AM CDT Mon Sep 4 2017/ (Today and Tonight) It will be warm and dry today with high pressure aloft bringing subsident conditions.
100 AM CDT Mon Sep 4 2017 Quiet weather expected the remainder of the night, as high pressure slowly departs to the E-SE. Main concerns during this period are with Monday temperatures, and timing of thunderstorm activity with the cold front. Strengthening cold front currently over the Northern Plains will be moving into northern parts of the CWA by midday Monday. Main focus the remainder of the work week remains with the shift to a much cooler weather pattern, as a long wave trough digs southward across the Midwest and Mississippi Valley. This trough will be slow to exit, but the western ridge is expected to finally nudge it eastward toward the first part of the weekend.
404 AM EDT Mon Sep 4 2017 Morning surface analysis shows a area of high pressure resides to our southeast and we in weak southerly flow around the high. All eyes then turn to the spoke off a larger upper levels trough across Canada that will swing toward the Ohio Valley the the period. Ahead of this amplifying upper level system will be a cold front and that will be the primary weather maker moving into Monday night and Tuesday. An unusually deep upper trough will be bottoming out over the eastern CONUS early in the period. A cold front associated with the trough will be exiting to the southeast as the period starts.
342 AM EDT Mon Sep 4 2017 Morning surface analysis shows a area of high pressure resides to our southeast and we in weak southerly flow around the high. All eyes then turn to the spoke off a larger upper levels trough across Canada that will swing toward the Ohio Valley the the period. Ahead of this amplifying upper level system will be a cold front and that will be the primary weather maker moving into Monday night and Tuesday.
Canadian cold front dropping south through the area early this morning is ushering in cooler temperatures and gusty north to northeast winds. Eastern areas should see the lowest RH values today where drier air aloft has the potential to mix to the surface.
Strong cold front will arrive across northern Oklahoma terminals toward and after 00Z. A sizzling Labor Day will be followed by cooler weather for the rest of the week. Generally, preferred the warmer side of guidance highs, mainly in the mid to upper 90s, hottest day since August 5 in most locations. Monday night into early Tuesday morning, a cold front will move south and through the area. Tuesday will be breezy/windy and cooler. Tuesday night, clearing and cooler conditions are forecast.
1212 AM CDT Mon Sep 4 2017 Large amplitude pattern in place across the CONUS this afternoon with a large area of high pressure across the western U. and a trough across the northeastern U. We have temperatures warming into the low 90s for highs and heat index values climbing into the mid to upper 90s.
200 AM EDT Mon Sep 4 2017 High pressure centered over the Carolinas this morning will move offshore today. A warming southerly return flow will result ahead of a cold front that will approach from the northwest and edge slowly east across NC on Wed. Heating of the modifying air mass should result in afternoon temps 3- 4 degrees warmer than this afternoon. It will be warmer thanks to a light sly wind and a modifying air mass. Min temps in the low-mid 60s.
A ridge of high pressure aloft expected to build further west today which will increase temperatures areawide. Some moisture will remain across the region under the high pressure resulting in possible afternoon thunderstorms each day, primarily over higher terrain.
While the airmass is much cooler than yesterday, it will also be significantly drier. With temps in the low to mid 70s, RH values should fall below 30 percent. Cooler temperatures are expected on Tuesday with highs only in the mid 60s, to the mid 70s. With the center of a high pressure over the western CWA Tuesday night, winds will become light and variable.
Afternoon highs should climb into the mid to upper 80s for most, and a little cooler on the Plateau.
441 AM CDT Mon Sep 4 2017 For today, the warmest day of the next 7 days is in the offing just ahead of a decent cold front.
This warm thermal ridge will be suppressed southward to areas along and south of roughly US 50 this afternoon, where the hottest temperatures can be expected. West breezes at sunrise will veer around to NEly by midday, as prefrontal trough and windshift slides south.
322 AM EDT Mon Sep 4 2017 A strong ridge of high pressure to the northeast should keep the easterly flow across the region for the next couple of days. With the higher PWATs there could be some urban street flooding, especially along the Gulf coast. Otherwise, should be garden variety type thunderstorms, although if the 500mb temps are a little cooler than models indicate, there could be some stronger storms as well.
632 AM EDT Mon Sep 4 2017 High pressure builds over the local area this morning. A strong cold front approaches from the northwest Tuesday night.
327 AM MDT Mon Sep 4 2017 Current surface analysis shows cold front now south and east of the forecast area, with much cooler air filtering into the region. Upper level analysis shows somewhat flattened ridge remaining over the Great Basin region and the Pacific NW, with stronger northwest flow sinking south into the Northern Plains. Another mainly dry week can be expected across the area as strong ridge builds back north into western Canada and brings dry air south out of central Canada. Much cooler conditions can be expected across the area into midweek, with temps slightly below average.
338 AM CDT Mon Sep 4 2017 Veered flow ahead of cold front will yield quite the warm up this afternoon. High temperatures across northwest parts of Oklahoma yesterday reached the upper 90s, so temperatures slightly above 100 appear reasonable over a large portion of northern and western Oklahoma as lower level thermal ridge spreads east. Influence of upper level ridge near frontal boundary as strongest flow and height falls stay well north of the boundary, along with veered flow and meager moisture, PoPs were reduced most areas for late Monday night through Tuesday.
209 AM EDT Mon Sep 4 2017 High pressure will move in this evening and provide fair and warm weather for Labor Day.
/issued 249 PM CDT Sun Sep 3 2017/ A highly amplified pattern will develop this week characterized by ridging in the west and troughing in the east. The trough covering the eastern CONUS is still on track to send a dry cold front through on Tuesday. By late this week, the ridge over the western CONUS will shift east as Lidia and troughing enter the northwestern US.
Strong cold front will move over far northern Oklahoma terminals around 00Z-02Z and make steady progress southward overnight. /issued 338 AM CDT Mon Sep 4 2017/ Veered flow ahead of cold front will yield quite the warm up this afternoon. High temperatures across northwest parts of Oklahoma yesterday reached the upper 90s, so temperatures slightly above 100 appear reasonable over a large portion of northern and western Oklahoma as lower level thermal ridge spreads east. Influence of upper level ridge near frontal boundary as strongest flow and height falls stay well north of the boundary, along with veered flow and meager moisture, PoPs were reduced most areas for late Monday night through Tuesday.
331 AM CDT Mon Sep 4 2017 Slightly faster arrival and exit of the Cold front and associated rainfall is the only significant change in the forecast this morning. One more warm day today before we see a much cooler temperatures arrive across the Midsouth.