Aikyam-Lab/Synoptic-Bench huggingface dataset:
413 AM EST Tue Nov 17 2020 A cold front will track from the Ohio Valley to off the southeast coast by the end of the day. This front will lead in colder air and high pressure.
330 AM CST Tue Nov 17 2020 Upper level high pressure sharpening across the southwestern U. and Great Basin this morning will shift across the Rockies into the high plains this afternoon, then edge east tonight.
304 AM CST Tue Nov 17 2020 Warmer air will push into the region during the short term. H85 temps will rise by 10 to 12C as upper ridging builds in. A front will begin to move through the Dakotas late in the period as the low moves off the Hills.
High pressure will quickly slide through the Midwest tonight and winds will diminish this evening through Wednesday morning. This will limit how far temps will drop, so the forecast lows are in the mid to upper 20s rather than the lower 20s of the previous forecast.
346 AM CST Tue Nov 17 2020 In the short term a significant difference as the southwest part of the forecast area comes solidly under the H5 ridge while cyclonic flow continues over the northeast part of the area. A 20 degree H850 thermal gradient over the forecast area today results in high temperatures into the lower 50s with the most sunshine today at Bowman (H850 +15 deg C), to around 30 for a high at Rolla (H850 +2 deg C by sunset).
106 PM EST Tue Nov 17 2020 Snow showers will continue to plague the region with some accumulation along and north of Interstate 80 and in the ridges tonight. An inch or two additional accumulation remains possible for the I80 corridor and ridges as sfc temperature decreases and vertical profiles remain favorable for lake-enhanced snow. Remaining snow shower activity will come to an end Wednesday morning as ridging moves in from te west. Dry conditions and warmer temperatures will then prevail the remainder of the week with high pressure in control.
942 AM PST Tue Nov 17 2020 The ridge of high pressure that was over Southern California yesterday continues to get pushed east allowing onshore flow to strengthen and spread cooling inland.
1247 PM EST Tue Nov 17 2020 Expect mostly dry weather and brisk winds today as high pressure builds behind a cold front.
High pressure and clear skies with VFR conditions will be the rule across the area. Today Through Wednesday Night An amplifying upper ridge over the Rockies today will move into the Plains tonight and into the Great Lakes Wednesday. Lows tonight will be in the lower 30s to lower 40s and in the 40s Wednesday night.
1128 AM CST Tue Nov 17 2020 High pressure will keep skies mainly clear during the coming TAF period. High pressure continues to be the main influence over South Central Texas tonight. High pressure will remain in place through this period.
1126 AM CST Tue Nov 17 2020 Today will feel a bit cooler than yesterday as a weak backdoor cold front pushes through the area tonight. The northerly winds and cooler airmass will be more noticeable over norther central Missouri with highs in the upper 40s to lower 50s, but the KC Metro will feel the effects too with highs in the mid to upper 50s. This cool down will be brief as upper level ridging and strong southerly return flow in the low levels builds into the region Wednesday. This higher wind combined with lower relative humidity will increase fire danger along the KS/MO border and burning is not recommended. The higher winds will come with WAA though as our high temps get into the upper 60s with some pockets of 70s in NW Missouri.
High pressure over the Mid-Mississippi Valley will ridge down into the forecast area providing dry conditions and light northeast winds. /issued 345 AM CST Tue Nov 17 2020/ Another cool start underway across the area this morning, with temperatures running generally in the lower/mid 40s away from the immediate coast. More robust warming (especially with overnight temperatures) is expected late week and into the weekend as the low level flow takes on an increasing onshore component.
952 AM MST Tue Nov 17 2020 Warmer temperatures are expected today and again on Wednesday, as the warm front tracks through the area early this morning. Gusty winds will accompany the warmer temperatures tomorrow, with gusts up to 40 mph possible along the ridges of the Rocky Mountain Front, the Little Belt Mountains, and the southwestern mountains.
200 PM CST Tue Nov 17 2020 High pressure continues to dominate the weather pattern with above normal temperatures and dry conditions. For Wednesday, the pattern will begin to shift with an upper level ridge sliding through the region and the flow becoming zonal.
The upper ridge is building across the Plains keeping the quiet weather and generally clear with the exception of a few passing cirrus from the west. Temps will continue to warm into the low/mid 70s this afternoon. Overnight lows tonight won't be as cool this morning's, but we will stay in the low/mid 40s.
The latter half of the week into the weekend looks dry and milder, as a large high pressure system builds across the region. A few light showers/sprinkles that formed on the cold front itself are moving east of Chesapeake Bay as of this writing, and should be east of our forecast area shortly. Total snow accumulations over the highest terrain still looks to be in the 1-2" range. It will be a chilly night, with lows by daybreak ranging from the lower 20s over the higher terrain of western MD and the WV panhandle, to the upper 30-near 40 in the vicinity of Chesapeake Bay. Afternoon highs should range from the 30s over the higher terrain, to the 40s elsewhere.
Calm weather conditions on tap for today with partly sunny skies and highs in the lower 30s. A breif warm up is expected later this week with our southern portions of the CWA potentially climbing into the lower 50s. Northwesterly flow remains aloft over the Northland as an upper level ridge increases in amplitude over the Intermountain West. At the surface a high pressure dominates the region with partly sunny skies prevailing across the region. Look for temperatures to stay below freezing today.
1240 PM EST Tue Nov 17 2020 Windy conditions will continue today as a cold front moves across the region. Cold high pressure will build across the area through mid- week, then warmer weather will develop late week. Highs will be in the mid to upper 50s with areas in the southeast in the low 60s. Temperatures will fall quickly after sunset due to decoupling and become below freezing in the NW and at or just above in the SE. Freeze Watch Issued for Cumberland, Wayne and Sampson Counties Cold Canadian high pressure will be in place over Central NC on Wednesday.
Most locations have reported winds around the 10- 15 MPH range with gusts around 25 MPH in some locations, especially in the higher elevations. Another night of chilly weather is expected overnight lows expected to be near or below freezing across the entire forecast area.
116 PM EST Tue Nov 17 2020 A cold front will track to the coast tonight. This front will lead in colder air and high pressure.
Overnight lows will be a touch warmer in the upper 30/lower 40s with unseasonably warm afternoon temps returning by Wednesday with highs in the 60s.
/issued 519 AM CST Tue Nov 17 2020/ Upper level high pressure will build overhead later today. /issued 330 AM CST Tue Nov 17 2020/ Upper level high pressure sharpening across the southwestern U. and Great Basin this morning will shift across the Rockies into the high plains this afternoon, then edge east tonight.
Therefore, highs will be tricky with the lower November sun. The temperatures may end up a little cooler dependent on the cloud thickness and mixing layer depth.
1044 AM EST Tue Nov 17 2020 Cold front is pushing south across the Florida Peninsula and about to pass over the Florida Keys. Otherwise some clouds are beginning to develop and dominate the skies across the Lower Keys. Temperatures are near 80 degrees with dew points still holding on to the lower 70s. This is in advance of the approaching cold front that will push through the region this afternoon. The aforementioned front is being driven by a strong continental high pressure that will eventually settle across the Appalachians late Wednesday and remain anchored through the weekend. Winds will be very slow to slacken as a strong high pressure will remain anchored over the Appalachians through the end of the week. A cold front will move through the area later today and potentially bring MVFR ceilings with it.
ENE-E winds will continue and should strengthen a little Wednesday as winds in the lower levels increase so have added in gusts near 15 knots after roughly 15z.
1013 AM CST Tue Nov 17 2020 Skies are sunny this morning across the Mid-South with temperatures ranging from the lower 50s to around 60 degrees. The cold front has moved through the region and has brought a return of north winds to the Mid-South. Current temperatures running a couple of degrees warmer than expected so have raised high temperatures for this afternoon. /issued 304 AM CST Tue Nov 17 2020/ A cold front will move through the Mid-South over the next couple of hours. Temperatures will be cooler today with highs expected to be in the mid 50s to around 60 degrees across much of the area. These locations will likely still see highs in the lower to mid 60s. High pressure will build over the Mid-South tonight and will remain over the region through Wednesday Night.
Warmer air will push into the region during the short term. H85 temps will rise by 10 to 12C as upper ridging builds in. A front will begin to move through the Dakotas late in the period as the low moves off the Hills.
131 PM CST Tue Nov 17 2020 An upper level ridge over the Rocky Mountains today will track eastward through the week.
An upper level trough located over the northeastern CONUS will continue to lift out towards the northeast out over the Atlantic. Meanwhile, an upper level ridge located over the northwestern CONUS begins shifting eastward towards the midwest. At the surface, a ridge of high pressure will continue building into the region from the north through the rest of today centering itself over the Ohio River Valley by tonight. Despite having clear skies, with cooler air being advected in, high temperatures will remain in the mid to upper 60s north of I-65, with upper 60s to low 70s south of I-65.
229 PM CST Tue Nov 17 2020 Area of mid/high clouds on the eastern edge of the upper ridge will continue to push east and break up some as we head into this evening. Fairly zonal upper flow will prevail across the northern CONUS through the period, with some low amplitude troughing by the end of the period.
The ridge will slowly slide eastward through Wednesday. In addition to stronger winds, significant warm air advection will push into the High Plains. The upper level ridge will continue to move eastward with zonal flow returning over the central Plains.
253 PM CST Tue Nov 17 2020 Chilly Canadian high pressure will settle into the region tonight.
The midlevel ridge is beginning to pass over the region and some high clouds have formed on the edge of the moisture confined to the north. The ridge axis is expected to move overhead this morning with weak southwest flow developing in it's wake. A deepening low pressure over the Pacific Northwest will push the ridge off the east and allow southwest flow to become established and remain in place through the week.
The latter half of the week into the weekend looks dry and milder, as a large high pressure system builds across the region. Total snow accumulations over the highest terrain still looks to be in the 1-2" range. It will be a chilly night, with lows by daybreak ranging from the lower 20s over the higher terrain of western MD and the WV panhandle, to the upper 30-near 40 in the vicinity of Chesapeake Bay. Afternoon highs should range from the 30s over the higher terrain, to the 40s elsewhere.
Upper troughing in place over the Ohio Valley will gradually exit off to the east today, replaced by ridging from the west. High pressure advancing from the mid-Mississippi to Wabash Valley today will provide us with brisk northwest breezes and cool temperatures. Tonight the high will strengthen and move right overhead with light winds and mostly clear skies. Went on the cool side of guidance because of this, and took our eastern sheltered valleys down into the lower 20s. After a cold start Wednesday morning, high temperatures in the afternoon will remain a bit below normal reaching the low/mid 50s with a few upper 40s across the Bluegrass.
1101 AM CST Tue Nov 17 2020 Aside from a bit of stratus along the James River Valley, current satellite imagery reveals clear skies and quiet conditions across our area, with latest observations showing temperatures hovering in the low 20s thanks to efficient radiational cooling. Otherwise, expect dry conditions to prevail today as an amplified upper level ridge moves overhead the region, with highs ranging in the 50s across south central SD to near 40 degrees in areas east of I-29.
202 PM CST Tue Nov 17 2020 Sunny skies and unseasonably warm temperatures are the rule again today as high pressure and aloft reigns supreme.
953 AM CST Tue Nov 17 2020 (Issued 955 AM CST Tue Nov 17 2020) Forecast details remain on track as high pressure lingers and provides clear skies. High pressure will quickly slide through the Midwest tonight and winds will diminish this evening through Wednesday morning. This will limit how far temps will drop, so the forecast lows are in the mid to upper 20s rather than the lower 20s of the previous forecast.
1128 AM CST Tue Nov 17 2020 (Today and tonight) Upper ridge builds out across the Plains today with mild temperatures and another day with abundant sunshine. Winds will increase some today as pressure falls occur across the high Plains in advance of developing western trough. Winds will stay up some overnight and temperatures will remain several degrees warmer than the last several nights.
Otherwise, a cold front pushing south across the Florida Peninsula is on the cusp on passing across the Florida Keys. Temperatures have held steady near 80 degrees with dew points in the lower 70s.
The area still resides under high pressure and the result is clear, cool, and dry weather. With a gradual increase in dew points, the overnight lows tonight will be just a couple of degrees warmer than last night. Again, just a gradual warming continues on Wednesday as the high shifts east, with temperatures in the 70s and up to 80s near the Coastal Plains.
1134 AM CST Tue Nov 17 2020 (Today and tonight) The upper level ridge of high pressure across across the middle of the country will bring plenty of sunshine today to West Central Texas.
LLWS was mentioned at the northeast Oklahoma sites later tonight into early Wednesday as the low level jet increases.
232 PM CST Tue Nov 17 2020 Stronger south to southwest boundary layer/surface flow will develop across central/eastern Kansas to the east of the deepening lee side trof on Wednesday. Wind speeds will flirt with or exceed advisory criteria over much of the area, with the highest confidence along/either side of the Kansas turnpike corridor.
Temperatures are expected to return closer to normal this weekend as an area of low pressure moves through the region. Temperatures are running nearly identical to yesterday, and even slightly warmer in some locations, with another 90 degree day increasingly likely for the Phoenix area. The only potential mitigating factor is a band of high clouds moving into western Arizona, but realistically this should have little to no impact on the high temperatures this afternoon. Today should be close to the peak in the heat for the time being, as an upper ridge is directly centered overhead as of this afternoon.
218 PM EST Tue Nov 17 2020 A continental polar airmass continues to filter in cooler and drier air across the peninsula with northeast winds. As a trough axis propagates off to the NE, an upper-level ridge is beginning to build east. Pleasant, dry conditions stick around for the next few days with high pressure in control. However, the really nice fall weather will only stick around a couple days before slightly warmer and more humid air begins to filter back in. Easterly winds will bring back more moisture and and slightly warmer temperatures.
SHORT TERM (Now through Wednesday night): Mid-level ridging over northern Mexico and Southern Texas will continue to produce a warm and benign weather pattern through the short-term period. Tomorrow will be a couple of degrees warmer than today -- highs in the low-mid 80s under partly cloudy skies. With a slight increase in dewpoints tomorrow, lows tomorrow night will be slightly warmer as well, with lows in the upper 50/lower 60s.
Overnight lows will be in the low 40s, with highs on Wednesday in the low to mid 70s.
Generally dry and mild ahead of the incoming trough this afternoon/evening. Winds ahead of the trough look to increase a bit more over eastern Oregon.
1039 AM EST Tue Nov 17 2020 A strong but dry cold front will sweep across the area this afternoon. Strong, cool and dry Canadian high pressure will follow for the mid-week period, with the high's center settling across the region by the end of the week.
254 PM CST Tue Nov 17 2020 (Issued 255 PM CST Tue Nov 17 2020) Tonight through Wednesday night: Gusty northwesterly winds will continue to die down this evening as high pressure slides off to our southeast. As this high pressure exits tomorrow, a steeper pressure gradient will lean over into the western Great Lakes Region, leading to some gusty south winds. Winds will be strong, but will carry the upside of moderating temperatures, which will reach into the lower 50s to upper 40s.
This is as mid level ridging amplifies to the west and a tightening SPG will bring breezy southerly winds back to the region. Expect these winds to remain elevated thru the overnight hours which should help to keep us on the warmer side of guidance for overnight lows.
230 PM CST Tue Nov 17 2020 A cold front which progressed through the TN Valley earlier today will continue to push southward through the evening. The post-frontal modified Canadian airmass will move from the Midwest into the Ohio Valley overnight, bringing in dew points down to the low 20s overnight. For now, with forecast winds of 5 mph, there is high confidence in the entire TN Valley reaching at or below freezing.
Skies will go mostly clear overnight with winds going near calm towards sunrise as ridge axis will be overhead. High pressure will quickly move east Wednesday allowing for return flow of warmer air, combined with mostly sunny skies, should get highs in the low to mid 40s.
1043 AM MST Tue Nov 17 2020 08z surface analysis had low over north central MT with warm front into western NE. Water vapour had upper ridge building from the Rockies into the northern plains. Today, thermal ridge builds into the CWA with highs 10-15F degrees above normal per warm front moving eastward. Tonight ahead of lee trough, 3-4mb/3hr pressure falls develop over western ND into central SD. Wednesday, thermal ridge peaks over the CWA.
1012 AM MST Tue Nov 17 2020 Warm & dry conditions can be expected today across a large portion of southeast Wyoming and the western Nebraska Panhandle with short wave ridging overhead. Winds are expected to increase near the Arlington/ Elk Mountain areas by early this evening w/ surface pressure falls spreading across the central & northern high plains, in advance of deep upper-level troughing over the western US.
High pressure ridging will continue to prevail over the area tonight from a high centered over the Ohio Valley. A cool night is on tap once again, with lows ranging from the low 30s in the northeast to near 40 in the south.
/issued 1013 AM CST Tue Nov 17 2020/ Skies are sunny this morning across the Mid-South with temperatures ranging from the lower 50s to around 60 degrees. The cold front has moved through the region and has brought a return of north winds to the Mid-South. Current temperatures running a couple of degrees warmer than expected so have raised high temperatures for this afternoon. /issued 304 AM CST Tue Nov 17 2020/ A cold front will move through the Mid-South over the next couple of hours. Temperatures will be cooler today with highs expected to be in the mid 50s to around 60 degrees across much of the area. These locations will likely still see highs in the lower to mid 60s. High pressure will build over the Mid-South tonight and will remain over the region through Wednesday Night.
134 PM MST Tue Nov 17 2020 Another mild day expected on Wednesday, before cooler temperatures arrive Wednesday night. Mid level heights fall as a broad trough moves across the northern Rockies. A cold front will push through Wednesday night and bring an end to the stronger winds over the west, for the time being.
1136 AM EST Tue Nov 17 2020 A strong but dry cold front will sweep across the area this afternoon. Strong, cool and dry Canadian high pressure will follow for the mid-week period, with the high's center settling across the region by the end of the week.
1018 AM EST Tue Nov 17 2020 Expect mostly dry weather and brisk winds today as high pressure builds behind a cold front.
High pressure dominates Wednesday onward, with a warming trend. Moisture behind the cold front continues streaming from the Great Lakes producing light rain/snow mix showers across portions of the lowlands, while it is all snow over our northeast mountains. With this cold advection, temperatures will plummet into the mid 20s, and even lower at some spots across the lowlands, while the higher elevations could drop down to the upper teens tonight. With gusty winds gradually diminishing through early Wednesday morning, the higher elevations could see some single digits wind chills this evening through early Wednesday morning.
1034 AM MST Tue Nov 17 2020 The midlevel ridge is beginning to pass over the region and some high clouds have formed on the edge of the moisture confined to the north. The ridge axis is expected to move overhead this morning with weak southwest flow developing in it's wake. A deepening low pressure over the Pacific Northwest will push the ridge off the east and allow southwest flow to become established and remain in place through the week.
401 PM EST Tue Nov 17 2020 Snow showers will continue to plague the region with some accumulation along and north of Interstate 80 and in the ridges tonight. Any accumulation to this point has been minor and fleeting in many cases due to air/surface temperatures above freezing, although some localized accumulations of an inch or less are noted on area webcams, particularly north of I-80 and in the ridges. Localized ridge accumulations of an inch or two remain possible thanks to upslope flow, with little more than a dusting elsewhere. Remaining snow shower activity will come to an end Wednesday morning as ridging moves in from te west. Dry conditions and warmer temperatures will then prevail the remainder of the week with high pressure in control.
605 PM CST Tue Nov 17 2020 Area of mid/high clouds on the eastern edge of the upper ridge will continue to push east and break up some as we head into this evening. Fairly zonal upper flow will prevail across the northern CONUS through the period, with some low amplitude troughing by the end of the period.
The highest precipitation totals will remain in the Sierra Nevada north of Tulare county. Cooler than average temperatures will continue across the district into the weekend. The approaching storm system will begin to effect the northern half of the district later this evening as the cold front moves into the area.
Don't think we will see sub freezing temperatures by 6 AM, with lows only falling into the 35 to 45 degree range. The high and low temperature forecasts for Wednesday were both bumped above the 75th percentile of model guidance.
/Issued 202 PM CST Tue Nov 17 2020/ Sunny skies and unseasonably warm temperatures are the rule again today as high pressure and aloft reigns supreme.