Aikyam-Lab/Synoptic-Bench huggingface dataset:
210 AM CST Mon Nov 16 2020 Winds simmering down early this morning as gradient continues to slacken with that deep low pressure system pulling farther northeast into Ontario Canada. Next on the forecast docket will be a weak intensity mid-level trough rotating southeast through southern Saskatchewan per GOES water vapor loop.
Aloft, we remain in quiet northwesterly flow on the back side of an upper trough that is centered over New England. This quiet weather pattern will continue through most of the week as upper level ridging builds in from the west. Temperatures should approach 60 degrees this afternoon, although there is a little uncertainty on this as highs yesterday ended up a little cooler than expected.
1134 PM CST Sun Nov 15 2020 High pressure will keep clear skies, light winds and VFR conditions over the area through the period. Winds will become light and variable overnight as high pressure settled across the region.
1029 PM EST Sun Nov 15 2020 Currently - Weak ridging across Florida is steadily being bridged into by a strong high centered over the southern plains. Lower level ridging does remain fairly robust across the Florida Peninsula and this evenings sounding reinforces the expectation for a band of considerable dry air above 850 mb running across our area. Short Term Update - Light to gentle northeast to east breezes are expected through the remainder of the overnight period due to the weak ridge to our north and Iota far off to the south.
A cold front should be exiting our area this morning, leaving behind a much cooler and drier airmass than its predecessor.
Winds are gradually decreasing across the local area this afternoon as the pressure gradient continues to relax behind yesterdays cold front. with most locations climbing into the lower to mid 50s the past few hours. expect west northwesterly flow aloft as an area of low pressure moves onshore across the west coast.
High pressure will bring dry and mild weather through midweek.
339 AM EST Mon Nov 16 2020 High pressure will bring dry weather today.
330 AM EST Mon Nov 16 2020 Cool high pressure will build in from the west through the end of the week. Mainly dry cold front has all but pushed off the NC coast early this morning. High pressure ridges in from the south- central CONUS, with clear skies and light winds tonight.
1228 AM EST Mon Nov 16 2020 A cold front will sweep east of the area this evening.
In terms of impacts, areas of snow showers may be occuring during the morning "rush hour" so slippery surfaces are possible especially along the Highway 2 and Highway 200 corridors. High pressure then sets in as an upper ridge amplifies to the west and translates our way.
Will keep the current High Wind headlines as is until this evening, and then will likely allow most of the high valleys/eastern plains zones expire on time. Very little of this activity has pushed off the mountains and into the valleys, so kept POPs low in the lower elevations. Models continue to indicate the low level pressure gradient slowly dissipating by noon Monday. With a solid 50 to 53 knots in the forecast wind gusts Monday morning, decided to extend the High Wind Warning for the Arlington area and the I-80 Summit and adjacent foothills until 18z (1100 am) Monday morning.
Otherwise, building upper level ridge through Monday will weaken surface pressure and wind components along with favoring continued VFR. A weak surface cold front will move south into the area on Monday with little impact other than light northerly breezes trending more easterly late in the day. The low-level jet is gradually intensifying over KCDS, and LLWS of around 30 knots in the lowest 500 ft AGL is expected to develop between 16/08-15Z Monday morning.
Otherwise dry and mostly clear late autumn weather will prevail across central Indiana this week courtesy a large mass of Canadian high pressure.
A weak cold front will move across the area from late this morning through late this afternoon.
1045 PM CST Sun Nov 15 2020 (This evening through Monday) In the wake of the cold frontal passage last night, a much cooler and drier airmass is over our area today. An upper level ridge will build into the southwestern US and move westward through Texas into the midweek.
315 AM EST Mon Nov 16 2020 High pressure will build east from the Midwest with cooler and drier air.
This activity was ahead of an approaching cold front that will make its way south later tonight. Winds will shift direction through the night, starting light and variable overnight and increasing to near 10 kt in morning and afternoon as a cold front makes its way southward through the day. Winds will be turning around tonight over the local Atlantic waters ahead of an approaching cold front.
High pressure has moved into the eastern Tennessee Valley tonight behind the strong cold front from Sunday. Cold air advection has produced a large drop in temperatures from the lower to mid 60s at late afternoon to the upper 30s to lower 40s at this hour.
1123 PM CST Sun Nov 15 2020 (This evening through Monday) In the wake of the cold frontal passage last night, a much cooler and drier airmass is over our area today. An upper level ridge will build into the southwestern US and move westward through Texas into the midweek.
As such, patchy frost will likely develop with some spots falling to or just below freezing. /Issued 138 PM CST Sun Nov 15 2020/ A sunny and seasonally cool day is underway, with northwest winds remaining a bit gusty behind last nights cold front.
High pressure will begin to build into the area tonight as a strong low pressure system departs the Great Lakes.
1249 AM EST Mon Nov 16 2020 Isolated showers will remain possible overnight as strong wind tapers off with an exiting cold front. A rain and snow mix will be possible with a mid week low pressure system. Precipitation will mainly fall as rain, though cooler air filtering in may create a rain/snow mix. Wind will gradually diminish as the sfc pressure gradient weakens, however, the higher terrain of eastern Tucker County will better allow for continued mixing of the strong jet to the sfc, allowing for advisory- level winds until early this morning.
A highly amplified upper ridge pattern will track across the central U.
Recent water vapor imagery shows troughing in the east centered over the northern Great Lakes region followed up by generally northwest flow to the west. At the surface, high pressure is centered to the south over southeast Oklahoma and is helping channel southerly winds in our general area. Over the course of the day, height rises are expected as ridging begins to build eastward and will continue the quiet stretch of the forecast period. Stronger ridging makes it way overhead by Tuesday, with a center of high pressure diving southeast, pushing a cold front into the area.
947 AM EST Mon Nov 16 2020 High pressure will bring dry weather today.
606 AM EST Mon Nov 16 2020 High pressure will build east from the Midwest with cooler and drier air. A dry, cold front will move through the region Tuesday brining cooler temperatures to the area through mid week. The cold front has moved off the coast at 08z. Pressure ridge building east from the Plains. Air mass will be dry with dew points in the low to mid 30s this afternoon. So about 15 degrees cooler than yesterday. Guidance has trended a little cooler but there will be a relatively strong low level jet toward morning. mainly upper 30s to near 40 but possibly cooler in sheltered areas. Canadian high pressure will dig into the eastern CONUS on Tuesday pushing a reinforcing cold front through the Southeast. The low level mixing will prevent ideal radiational cooling conditions.
A cold front will pass through central and southeast IL dry this evening, bringing cooler highs in the mid to upper 40s on Tuesday.
Heights aloft begin to build as an upper level ridge begins to build into the central CONUS. Warm advection looks to get underway Tuesday as the H85 ridge axis finally slides off to our east.
519 AM CST Mon Nov 16 2020 Winds simmering down early this morning as gradient continues to slacken with that deep low pressure system pulling farther northeast into Ontario Canada. Next on the forecast docket will be a weak intensity mid-level trough rotating southeast through southern Saskatchewan per GOES water vapor loop. High pressure builds in tonight into Tuesday for mostly clear skies.
(This evening through Monday) In the wake of the cold frontal passage last night, a much cooler and drier airmass is over our area today.
High pressure will bring a strong warming trend over the next few days with temperatures near record highs for the middle of the week.
Today Through Tuesday Night An amplifying upper ridge will be over the Rockies today and move into the Plains Tuesday.
A few of the cooler locations including the Golden Triangle and Meridian areas in eastern Mississippi are currently reporting temperatures in the 34 to 36 degree range, with a degree or two of additional cooling possible before sunrise. Max temps should range in the mid to upper 60s today with light winds and high pressure keeping skies clear. Tonight will be on the chillier side of normal again, with high pressure, clear skies, and light winds likely seeing a repeat for temperatures compared to this morning. Patchy frost is most likely in northeastern parts of the area, but a few drier and cooler spots elsewhere could see some patchy frost develop as well if winds go calm. High pressure settles in around Tuesday and dominates for the rest of the week.
The pressure gradient will increase across the area in between the low and high and will result in westerly wind gusts of 20 to up to 35 mph to occur at times. Lows tonight will drop into the lower to middle 30s as highs on Tuesday range from the middle 50s across central Missouri to the middle 60s across extreme southeastern Kansas and far southwest Missouri. Issued at 300 CST Mon Nov 16 2020 An upper level ridge will then build over the region during the middle to the end of the week.
These warmer temperatures over northwest Wisconsin will help reduce snowfall amounts there.
420 AM MST Mon Nov 16 2020 Updated Aviation Discussion High pressure will build into the region through Tuesday with mainly light rain or snow showers in some areas today before dry and milder conditions overspread the area on Tuesday.
536 AM CST Mon Nov 16 2020 High pressure and clear conditions will continue through the period with VFR conditions. Today Through Tuesday Night An amplifying upper ridge will be over the Rockies today and move into the Plains Tuesday.
Decoupling of the PBL has allowed for nearly calm winds particularly in river valley locations where temperatures have already fallen to the low 30s and even into the 20s, whereas other locations have seen slowly rising temperatures through the 30s and 40s due to a 30-40 kt LLJ advecting warmer air into the region. As we head into the daytime hours, temperature advection looks more neutral as winds turn northwesterly, although abundant sunshine should help highs reach the low to mid 60s. Lows by Tuesday morning are forecast to be in the low to mid 30s, although with a similar radiational cooling set-up, wouldn't be surprised to see some local readings drop cooler. Northwest flow continues through most of Tuesday before an upper ridge progresses eastward.
AM MST Mon Nov 16 2020 Updated Aviation Discussion High pressure will build into the region through Tuesday with mainly light rain or snow showers in some areas today before dry and milder conditions overspread the area on Tuesday.
Bordeaux has seen a considerable decrease in gusts this AM with the retreating lee trough, so believe we should be able to expire that segment at 5 AM MST. Quiet weather is likely to prevail through Tuesday as a transitory ridge affects the central Rockies in advance of the next upper-lvl trough over the western CONUS.
The jet stream will also start shifting northward as high pressure builds in so we can expect plenty of sunshine and warming temperatures. This digging system will cause the ridge axis to move overhead and then move off to the Front Range. High temperatures will jump into the upper 50s/low 60s for valley locations while mountain towns will reach the low to mid 50s.
742 AM EST Mon Nov 16 2020 Across the Nature Coast down to the I-4 corridor, low clouds and patchy fog have been hanging around this morning ahead of an advancing cold front. However, an advancing cold front may allow for lingering reductions to flight categories until passing. Generally benign boating conditions for today ahead of an advancing cold front. Winds and seas will begin to increase later this week as cooler and drier air settles in and the pressure gradient tightens.
Current satellite analysis depicts an upper level low located over southwest Quebec south of the Hudson Bay and north of New York. An associated trough dips down over the eastern US. Upstream is a ridge axis over the Pacific Northwest. This ridge will move east over the next couple of days with heights rising over the FA and temperatures trending warmer. Clear skies and light winds will aid in nocturnal radiational cooling tonight with temperatures dropping into the low 30s in the northwest and upper 30s in the southwestern FA. Tuesday night the southerly winds will help transport some higher dewpoints into the low 40s which will hold the overnight lows in the 40s with the exception of the far northwest combined Panhandles.
349 AM CST Mon Nov 16 2020 (Issued 349 AM CST Mon Nov 16 2020) Today and Tonight: A weak low pressure system currently over eastern ND will slide southeast through central and southern WI this afternoon. Clouds will gradually clear overnight and lows should be in the upper 20s, although a delay in the clearing will lead to slightly warmer lows.
921 AM EST Mon Nov 16 2020 Cool high pressure will build in from the west through the end of the week. Mainly dry cold front has all but pushed off the NC coast early this morning. High pressure ridges in from the south- central CONUS, with clear skies and light winds tonight.
After a seasonably cool start to the morning, temperatures should warm rapidly given a sunny sky and increasing low-level warm air advection ahead of a cold front. This resulted in highs reaching the low to mid 60s across the region. The cold front is expected to pass through the CWA by early this evening, with moderately strong low-level cold air advection in its wake tonight into Tuesday.
423 AM MST Mon Nov 16 2020 West-northwest flow aloft will decrease today and tonight as an upper level ridge builds over the Great Basin. Except along the east slopes of the Front Range mountains and along the Cheyenne Ridge, winds will be weak today. With the ridge starting to build over the region, temperatures will be warmer today with lower to mid 60s across northeast Colorado. Upper ridging with zonal flow aloft is progged for the CWA on Tuesday.
Mostly clear skies and much cooler temperatures can be expected through Tuesday with this pattern. Highs then trend a few degrees warmer on Tuesday, reaching the upper 60s to low 70s.
A weak cold front will move across the area from late this morning through late this afternoon. After this, an upper ridge will build across the middle of the country, shifting the upper jet well north of the region.
/issued 320 AM CST Mon Nov 16 2020/ Today a weak upper ridge extends up from the Gulf through the Western US. This ridge will slide east Tuesday and extend from Mexico up through TX and the Central Plains into Canada. Also on Tuesday the next upper trough will begin to move ashore the West Coast. This trough will move across the northern tier of states and flatten out the ridge.
234 AM MST Mon Nov 16 2020 High pressure ridging will begin to build over the forecast area today and especially for Tuesday. Temperatures for Tuesday will climb above normal with 50s common as the ridge axis will be directly over the forecast area. Hooley Upper level ridge will break down as a series of weak Pacific waves veer the flow gradually from SW to NW through the latter half of the week.
(Today and tonight) Early this morning, freezing temperatures have settled across portions of the area. In fact, high temperatures will settle into the low to middle 70s for this afternoon.
523 AM CST Mon Nov 16 2020 High pressure has settled over the region with clear skies at all terminals this morning. High pressure is settling over Texas behind a cold front. Cooler, drier air has moved over our CWA. Temperatures are 15 to 25 degrees cooler than 24 hours ago and dewpoints are 30 to 45 degrees lower. The center of the high will drift toward the east during this period.
533 AM EST Mon Nov 16 2020 Below normal temperatures and breezy conditions are expected today before rain and snow showers return Tuesday with crossing low pressure. Wind Advisory remains in effect for the higher terrain of Tucker county as latest obs near Canaan heights are still reporting gusts in excess of 50+ mph. Rain and snow showers (mostly snow) will accompany a cold front overnight with light accumulations on grassy surfaces possible north of PGH and in the ridges. Cold northwesterly flow and a sufficiently deep boundary layer behind the front will result in scattered lake enhanced snow showers mostly north and east of PGH and in the ridges on Tuesday. diminishing overnight as ridging builds in from the west.
After lows near or below freezing this morning, the dry Canadian airmass will efficiently warm under full sun, dropping relative humidity below 30 percent. Daytime relative humidity should moderate on Tuesday, following a morning cold frontal passage.
541 AM EST Mon Nov 16 2020 Colder temperatures are anticipated today in the wake of yesterday's cold front and strong wind gusts. There will also be flurries and scattered light snow showers over the higher terrain, as well as the northern tier of the Commonwealth. A west-southwest boundary layer flow and weak ridging at the surface and aloft will keep lake effect snow showers north of the PA/NY border for much or all of today and early tonight. NBM guidance seemed too low with lake effect potential Tuesday and Tuesday night, and leaned more toward some of the high grid resolution individual model members within the HREF. Areas farther south and east may see flurries, but no accumulation is expected due to ground temperatures just above freezing.
Area of precipiation ahead of the low now moving east out of the James River Valley. Highs today will range from the 20s north to the low/mid 40s south.
346 AM MST Mon Nov 16 2020 09z surface analysis had low over central ND with trough into eastern NE and another trough into northern MT.
No aviation hazards expected with light winds and upper level ridging building overhead.
520 AM CST Mon Nov 16 2020 (Today and tonight) Early this morning, freezing temperatures have settled across portions of the area. In fact, high temperatures will settle into the low to middle 70s for this afternoon.
Some cooling is possible during the late portion of the week as an area of low pressure aloft starts to approach from the west. An upper level ridge currently centered just off the coast of southern California will continue to build over the Southwest, leading to increasing temperatures.
621 AM EST Mon Nov 16 2020 [Through 12Z Tuesday] The cold front is nearly exiting extreme SE Big Bend with a thin, trailing belt of 3-5kft clouds moving across TLH and VLD. A cold front should be exiting our area this morning, leaving behind a much cooler and drier airmass than its predecessor.
A broad trough will hang over the northeastern CONUS through the next 36 hours. Temperatures will peak in the lower or middle 40s. Overnight snow totals should generally be below an inch with the highest totals across the higher terrain of central NY.
Winds will shift to the west to northwest behind the clipper and become breezy and gusty, enhanced by the northwest flow aloft on the exiting edge of an upper trough. A ridge will begin to build in from the west with high pressure at the sfc late today and tonight. Clear skies and light winds tonight under the high will see temps plummet into the teens and 20s. A high-amplitude upper-ridge will have shifted across the High Plains by Tuesday evening. A tightening sfc pressure gradient with high pressure to the southeast and low pressure to the northwest will help keep southerly winds elevated overnight, particularly across the higher-elevation Coteau.
252 AM MST Mon Nov 16 2020 09z surface analysis had low over central ND with trough into eastern NE and another trough into northern MT.
Cold northwesterly flow and a sufficiently deep boundary layer behind the front will result in scattered lake enhanced snow showers mostly north and east of PGH and in the ridges on Tuesday. diminishing Tuesday night as ridging builds in from the west.
Upper level high pressure ridge will build over the southwestern U. An upper level high pressure ridge will move into New Mexico tonight. And a minor push of slightly cooler air will settle into the area this afternoon and evening with light northerly winds trending east and southeast this evening. Upper level ridging on Tuesday will give way to more zonal flow for the remainder of the week.
402 AM PST Mon Nov 16 2020 High pressure aloft and weak offshore flow will bring warming today with gusty northeast to east winds along and near the coastal slopes of the mountains.
441 AM EST Mon Nov 16 2020 Water vapor imagery highlights mean-layer ridging across the western North Atlantic and the Gulf of Mexico, sandwiched between Category 4 Hurricane Iota over the Western Caribbean and a long wave trough over the eastern United States. A cold front draped across the Florida Panhandle is parallel to the mean-layer thickness gradient, but continues to limp to the southeast. Locally, isolated showers are moving west through the Lower Keys and the adjacent coastal waters. Meanwhile, the frontal boundary over the Panhandle will continue to press southeast, pushed to the south by the burgeoning high pressure system spreading east through the Mississippi River Valley. This will not be a sharp frontal passage, and probably is better described as a bridging high pressure system.
245 AM MST Mon Nov 16 2020 A warming trend is expected through the period as upper level ridging moves over the area from the west.
711 AM EST Mon Nov 16 2020 Cool high pressure will build in from the west through the end of the week. Mainly dry cold front has all but pushed off the NC coast early this morning. High pressure ridges in from the south- central CONUS, with clear skies and light winds tonight.
630 AM EST Mon Nov 16 2020 Colder temperatures are anticipated today in the wake of yesterday's cold front and strong wind gusts. There will also be flurries and scattered light snow showers over the higher terrain, as well as the northern tier of the Commonwealth. A west-southwest boundary layer flow and weak ridging at the surface and aloft will keep lake effect snow showers north of the PA/NY border for much or all of today and early tonight. NBM guidance seemed too low with lake effect potential Tuesday and Tuesday night, and leaned more toward some of the high grid resolution individual model members within the HREF. Areas farther south and east may see flurries, but no accumulation is expected due to ground temperatures just above freezing.
423 AM EST Mon Nov 16 2020 Below normal temperatures and breezy conditions are expected today before rain and snow showers return Tuesday with crossing low pressure. Wind Advisory remains in effect for the higher terrain of Tucker county as latest obs near Canaan heights are still reporting gusts in excess of 50+ mph. Rain and snow showers (mostly snow) will accompany a cold front overnight with light accumulations on grassy surfaces possible north of PGH and in the ridges. Cold northwesterly flow and a sufficiently deep boundary layer behind the front will result in scattered lake enhanced snow showers mostly north and east of PGH and in the ridges on Tuesday. diminishing overnight as ridging builds in from the west.
Hourly temperatures are running a couple of degrees warmer than anticipated in some spots this morning, but the forecast remains largely on track for the rest of today.