Aikyam-Lab/Synoptic-Bench huggingface dataset:
This cold air advection combined with lingering low stratus will help keep temperatures much cooler than recent days, with highs mostly in the 40s.
/issued 225 PM CST Thu Dec 5 2019/ West winds are picking up across the area this afternoon ahead of a cold front that will move through the area tonight. The High Wind Warning in the Guadalupe Mountains will remain in effect however for the next several hours since winds in the higher elevations are quite a bit stronger. Temperatures behind the front will be cooler, but still above normal and combined with dry conditions will allow for a very pleasant weekend.
A low pressure system will continue to shift east of the area through midday today. High pressure aloft will follow this storm for the late in the week, with the next storm system impacting the region during the upcoming weekend.
VFR/MVFR cigs to develop overnight as a cold front moves through the area, Front to clear the AR sites by 12z with MVFR cigs prevailing at all sites into the afternoon. /Issued 247 PM CST Thu Dec 5 2019/ Well above normal temperatures and gusty southerly winds are in progress across eastern Oklahoma and western Arkansas, in advance of a strong cold front that will move through the area tonight. Much cooler temperatures will follow the front tomorrow, with afternoon temperatures likely to be around 20 degrees cooler than today's.
322 PM CST Thu Dec 5 2019 Upper low currently over the Four Corners region will continue to weaken as it moves east onto the Plains and towards the area tonight. At the surface, an accompanying cold front moving into northwest Kansas will continue to move south and east. A spotty shower is still possible overnight south of I-35, near the track of the upper low, but most areas should remain dry. The cold front associated with the upper low will move through overnight, with an increase in northerly winds just behind the front. Despite clearing skies, cold advection behind the front will keep highs Friday in the low 40s. The weekend periods continue to look dry and warmer through there are a few minor things to monitor.
Issued by National Weather Service Louisville KY 322 PM CST Thu Dec 5 2019 Tonight, the east side of an upper ridge will stretch from coast to coast over the CONUS. Tomorrow behind the front, a north wind will move in with the higher surface pressure. Skies will be slow to clear and will help keep high temperatures in the low to mid 50s, about 10 degrees cooler than today.
A cold front was already stretched across northwest Iowa this afternoon and will sweep across Iowa through this evening. High pressure will enter the state during the day Friday. The area of high pressure will bring diminishing winds and clearing skies, similar to what is occurring under the system now over southeast Saskatchewan. Friday will be nearly 20 degrees cooler than today but it will be just a glancing blow of colder air.
Light southwest winds this evening will turn to the north/northwest later tonight as a cold front moves through. Overnight, a cold front located across the Panhandle will move southward as a fast-moving upper trough whips across the Southern Plains. Temperatures tonight are expected to fall into the low 40s, although they may stay somewhat mild for the first half of the night until the front moves through. Highs tomorrow were lowered toward the NAM MOS guidance, which was on the cooler end. (Friday Night through Thursday) Much cooler Friday Night in the wake of the cold front, with overnight lows dropping down into the low to mid 30s.
High amplitude ridging sets up going into the work week that will result in calm and dry conditions for the rest of the forecast period. Light ridging will set-up over the Desert Southwest to finish off the work week.
Winds will lessen this evening and tonight as high pressure builds, and when combined with some moisture from snow melt today, we can't rule out a bit of shallow fog into Friday morning across parts of central SD. Dry weather will continue as the high pressure drifts southeast and away from the forecast area. Slight upper- level ridging begins to build in on Friday as well, setting the stage for more mild/seasonable lows Friday night and a slightly warmer start to the weekend.
If this occurs, be aware of near-freezing temperatures and road surfaces.
As night time begins to approach, a short wave trough will swing across the Ozarks and through the ArkLaMiss bringing increased cloud cover and overnight rain chances going into Friday afternoon. Despite the rain, high temperatures for tomorrow will range from the low to mid 60s for areas north of I-20 and near 70 degrees elsewhere.
precipitation chances come to an end during this as an upper trough and axis of 850-500mb moisture moves away from the area. A mix of liquid and frozen precipitation is expected very early this evening changing over to some snow showers mid evening as temperatures fall into the low 30s. Model visibility forecasts suggest freezing fog developing after midnight mainly west of a line from around Trenton to Colby, Oakley and Leoti. broad upper ridge spreads over the plains states with little if any cloudiness except near the surface where boundary layer remains fairly saturated in the morning before decreasing in the afternoon. At this time will stick with better performing bias corrected temperature grids the past 5 days which support highs in the low to mid 40s. Low temperatures in the low to upper 20s.
Cigs will lower to low end MVFR through Friday morning as the disturbance and its associated cold front move into the area. Temperatures generally running in the low 70s at this time, and ranging from 5 to 10 degrees above normal. Weak cold front progged to ease across the forecast area Friday. Temperatures will again manage to jump well above climo values before slightly cooler temperatures overspread the area for the weekend. High pressure returns for the weekend.
538 PM CST Thu Dec 5 2019 For the 00Z TAFs, a cold front will continue moving southward across the forecast area with gusty north winds in its wake this evening. Some light rain is also accompanying the cold front, mainly across the northern zones in the vicinity of KGUY and KDHT. Surface wave is currently over western Oklahoma Panhandle, with cooler airmass to its north and northeast. Surface wave expected to move southeast during the late afternoon and early evening with the cooler air moving south into the Panhandles. Low- and mid-level moisture remains on the low side, but modest amounts of elevated instability could support shower development through midnight.
An area of low pressure is currently observed across the southern plains associated with a weak disturbance aloft. Chattanooga Airport, TN 41 53 43 56 / 10 60 40 10 Knoxville McGhee Tyson Airport, TN 38 50 39 56 / 10 50 20 10 Oak Ridge, TN 38 49 39 56 / 10 60 20 10 Tri Cities Airport, TN 32 48 36 53 / 10 50 20 10.
Upper low currently over the Four Corners region will continue to weaken as it moves east onto the Plains and towards the area tonight. At the surface, an accompanying cold front moving into northwest Kansas will continue to move south and east. A spotty shower is still possible overnight south of I-35, near the track of the upper low, but most areas should remain dry. The cold front associated with the upper low will move through overnight, with an increase in northerly winds just behind the front. Despite clearing skies, cold advection behind the front will keep highs Friday in the low 40s. The weekend periods continue to look dry and warmer through there are a few minor things to monitor.
Mostly cloudy skies are expected overnight, which will keep temperatures slightly warmer. By Friday, the transitory ridge will move overhead and conditions will remain calm and dry.
Added in the mention for a few hours until wind speeds are expected to diminish with the approach of high pressure. Winds will lessen this evening and tonight as high pressure builds, and when combined with some moisture from snow melt today, we can't rule out a bit of shallow fog into Friday morning across parts of central SD. Dry weather will continue as the high pressure drifts southeast and away from the forecast area. Slight upper- level ridging begins to build in on Friday as well, setting the stage for more mild/seasonable lows Friday night and a slightly warmer start to the weekend.
A light north/northeast wind will diminish overnight and temperatures will will fall close to last night's low - maybe a degree or two warmer. High pressure across the Southeast will result in generally light offshore winds into the weekend and overall pleasant boating conditions. Winds then become southerly ahead of an approaching cold front which is expected to move through by the middle of the week.
This small area combined with lift associated with an incoming cold front currently located from Nowata county southwestward into Lincoln county will likely be the focus for isolated thunderstorm development tonight.
Flow returns in the current system's wake back to the northwest aloft as ridging builds in. Highs will be a touch warmer in the upper 30s and low 40s across the High Plains.
618 PM EST Thu Dec 5 2019 High pressure over the forecast area will move off the Southeast Coast Friday morning. There will be increased moisture ahead of an approaching cold front Friday.
The warm air was being being drawn into the area by a south to southwest low level flow ahead of a weak low pressure center over southern MN and trough axis reaching across northwest Iowa into central KS. A trailing cold front across SE SD into eastern NE will push through the local area tonight, bringing much cooler weather for Friday. Friday: Any post frontal low clouds will likely dissipate from northwest to southeast through the day as the increasingly anticyclonic low level flow breaks up the clouds trapped in the low level inversion.
This will greatly affect low temperatures overnight, as areas under cloud cover should be able to sustain warmer air.
Skies clear tomorrow with a ridge aloft building in over the Central-Northern Rockies.
This next cold front seems to be on track with previous TAF timings so no major changes planned at this time.
/Issued 538 PM CST Thu Dec 5 2019/ For the 00Z TAFs, a cold front will continue moving southward across the forecast area with gusty north winds in its wake this evening. Some light rain is also accompanying the cold front, mainly across the northern zones in the vicinity of KGUY and KDHT. Surface wave is currently over western Oklahoma Panhandle, with cooler airmass to its north and northeast. Surface wave expected to move southeast during the late afternoon and early evening with the cooler air moving south into the Panhandles. Low- and mid-level moisture remains on the low side, but modest amounts of elevated instability could support shower development through midnight.
100 AM EST Fri Dec 6 2019 There will be increased moisture today in a south flow between offshore high pressure and ahead of an approaching cold front.
1007 PM EST Thu Dec 5 2019 High pressure over the forecast area will move off the Southeast Coast Friday morning. There will be increased moisture ahead of an approaching cold front Friday.
Cigs will lower to low end MVFR through Friday morning as a cold front approaches the area.
Overall, TAFs should remain quiet even with the passage of the next cold front early Fri morning. The low T/Td spreads along with decreased winds tonight ahead of the front will be favor- able for the development of patchy fog across these areas. The cooler/ drier air in the wake of the front will help to slowly mix the patchy (possibly dense) fog out by mid to late morning.
Tonight, the east side of an upper ridge will stretch from coast to coast over the CONUS. Tomorrow behind the front, a north wind will move in with the higher surface pressure. Skies will be slow to clear and will help keep high temperatures in the low to mid 50s, about 10 degrees cooler than today.
High pressure aloft will shift east across the Great Basin through Friday.
High pressure, currently over the southeastern US this morning, should move off to the east through the day. This should allow for the surface flow to become more east to southeasterly today, advecting a warmer airmass into the area, along with a bit more moisture.
A weak upper low pressure system will move across the South today as a cold front drops southeast across central Indiana this morning.
One by Lake Michigan, which will pass north of the Quad State region but has an associated cold front along the trough. High pressure to the east is contributing to the light southerly winds and seasonally warm temperatures tonight with lows in the mid 40s. Temperatures will be much cooler Thursday night with lows below freezing for areas north of the Ohio River and in the mid to upper 30s to the south.
228 AM CST Fri Dec 6 2019 In wake of a mid/upper level low moving e INVOF TX/OK line an assocd cold front was moving s thru the TX plains. Still high temps will be about 10-20 degrees cooler than yesterday for the Trans Pecos and the PB, respectively.
311 AM EST Fri Dec 6 2019 A cold front will return precipitation chances later today.
817 PM MST Thu Dec 5 2019 Cold front has pushed through the forecast area with high pressure moving southward into the northern Plains. Post-frontal stratus has developed across most of the area with fog/freezing fog where northeast upslope winds have pushed the cold airmass against the Black Hills. The clouds and fog will persist through the night, with skies clearing Friday morning as lee trof deepens over eastern MT-WY.
Temps today will be cooler in the mid 30s to low 40s.
203 AM EST Fri Dec 6 2019 Weak low pressure moving across New York state today will drag a weak cold front across the region late this afternoon.
Lee-side troughing combined with high pressure over Yellowstone Park will increase winds along the Livingston/Nye areas but should stay below advisory levels.
345 AM CST Fri Dec 6 2019 A cold front currently extends from the central Great Lakes region southwest into central Arkansas and eastern Oklahoma. An area of low pressure has developed southeast of the front over eastern Texas into southwestern Arkansas. Luckily cloud cover will hold in place overnight, keeping lows in the lower 40s primarily despite some cold air advection. Continued cloudy conditions will allow for a very warm night with lows only dropping into the lower to mid 40s.
/issued 228 AM CST Fri Dec 6 2019/ In wake of a mid/upper level low moving e INVOF TX/OK line an assocd cold front was moving s thru the TX plains. Still high temps will be about 10-20 degrees cooler than yesterday for the Trans Pecos and the PB, respectively.
As high pressure drifts down to the southeast throughout the day today, winds will shift to the southwest.
Expect widespread rain this morning as the system tracks across the Lower Mississippi Valley. High pressure will build into the mid Mississippi and Ohio Valleys. Lows will mostly be in the lower 40s with highs on Saturday in the 50s with light NE winds.
Currently, high pressure has been clearing clouds through the James River Valley in weak cold and dry advection. Meanwhile return flow across southwest into western North Dakota is already bringing warm advection back into the region ahead of a warm front that will move into the region today. So clouds will be a short term issue, and we are generally going decreasing clouds by afternoon west as the warm front moves east, with mostly cloudy skies north and east. Highs today will be in the lower 40s southwest and west central where the sunshine and best warm advection takes place. But only in the upper 20s and lower 30s central and north where clouds should hold down temperatures ahead of the warm front.
An upper level trough will move into south Georgia late today which will bring an increase in mid level cloudiness mainly north of I-10. Highs will reach the low/mid 70s this afternoon with lows tonight in the 40s inland and lower 50s coast.
534 AM EST Fri Dec 6 2019 [Through 12z Saturday] Cloud cover will increase across the area this afternoon ahead of an approaching cold front, although ceilings are expected to remain VFR today.
It will be much cooler today, as a seasonably strong area of modified Arctic high pressure builds south across Mid- America. Light winds and clear skies are anticipated tonight as high pressure settles south over the region. A quick temperature rebound into the 50s is expected for Saturday, as atmospheric thickness builds ahead of an approaching western CONUS trough. Also, south/southwest winds will be on the increase Saturday, as High Plains lee troughing commences.
801 AM EST Fri Dec 6 2019 A cold front will return precipitation chances later today. High pressure is expected to bring dry and quiet weather this weekend. Accumulation will be light and focused in the ridges of WV/MD due to sufficient upsloping.
One by Lake Michigan, which will pass north of the Quad State region but has an associated cold front along the trough. High pressure to the east is contributing to the light southerly winds and seasonally warm temperatures tonight with lows in the mid 40s.
It will be cooler today with highs mainly in the low to mid 50s. Quasi-zonal flow aloft Saturday will establish a lee-trough over the srn High Plains and the resulting S-SW winds will get a bit breezy across western areas by afternoon.
917 AM EST Fri Dec 6 2019 Dry stable conditions (via 12Z raob data) courtesy of high pressure moving off the mid Atlantic coast this morning will support another very pleasant dry day across the entire forecast area with ample sunshine expected. After a cool start temperatures will rebound back to near normal during the afternoon with high topping out in the lower 70s north, and mid 70s central and south. High pressure northeast of the area will support tranquil boating conditions over the Gulf waters the remainder of today with southeast to south winds in the 5 to 10 knot range with slight seas with an onshore sea breeze component developing along the coast during the afternoon.
Today Through Saturday An upper level trough will move through Arkansas today. An upper ridge builds over the Rockies tonight and moves into the Plains Saturday.
A cold front currently extends from the central Great Lakes region southwest into central Arkansas and eastern Oklahoma. An area of low pressure has developed southeast of the front over eastern Texas into southwestern Arkansas. Luckily cloud cover will hold in place overnight, keeping lows in the lower 40s primarily despite some cold air advection. Continued cloudy conditions will allow for a very warm night with lows only dropping into the lower to mid 40s.
High pressure, currently over the southeastern US this morning, should move off to the east through the day. This should allow for the surface flow to become more east to southeasterly today, advecting a warmer airmass into the area, along with a bit more moisture. So, basically, warmer for the next couple of days, with some increasing cloud cover is really all that is in store for South Florida for Friday through Saturday. Mid-week models continue to depict a mid-upper level trough moving across the eastern US with a low pressure system moving through the Great Lakes with a cold front draped to the south moving through the southeast US.
301 AM MST Fri Dec 6 2019 Pretty quiet weather expected today as a flattened upper level ridge axis moves across Wyoming later in the day and into tonight. Main forecast concern this weekend will be the potential for strong winds as two Pacific troughs merge across the Front Range as they push eastward this weekend. Kept the High Wind Watch out for now, mainly due to low confidence in timing since models have backed off quite a bit for late tonight and early Saturday morning.
424 AM MST Fri Dec 6 2019 Broad upper ridging over the western CONUS is placing the Northern Plains beneath west to northwest flow. At the surface, high pressure is located across eastern SD with a lee trof across eastern WY. This will bring warmer and drier air into the area, with morning fog giving way to mostly sunny skies. Upper ridge axis will cross the Northern Plains on Saturday.
512 AM CST Fri Dec 6 2019 A few light showers are possible over southern Illinois this morning, ahead of an advancing cold front. Behind the front, brisk north winds and cooler temperatures will affect the area today. Early morning surface map indicated 1012 mb low pressure over central lower MI, with a cold front extending southwest into west central IL. To the northwest, 1030 mb high pressure was located over eastern South Dakota. Highs should be 10-12 degrees cooler than yesterday, upper 30s northwest to mid/upper 40s south of I-70. Undercut lowest guidance by a degree or two for lows in the low/mid 20s. The ridge axis begins to shift east of the area on Saturday, allowing for dry and seasonable weather.
809 AM EST Fri Dec 6 2019 A cold front will return precipitation chances later today. High pressure is expected to bring dry and quiet weather this weekend. Accumulation will be light and focused in the ridges of WV/MD due to sufficient upsloping.
High pressure moves east today, allowing for a Pacific front to move across the state on Saturday.
355 AM CST Fri Dec 6 2019 The cold front has now made it through most of OK early this morning, with some gusty north winds behind it.
Otherwise, it will be a cooler day as cold high pressure slides across the region.
Another Cold Front and Cooler. Another cold front has moved across Texas, and it's producing gusty winds, from the north, early this morning. This front will result in much cooler temperatures today. Although winds will diminish later this afternoon, cool air will remain in place tonight, as temperatures fall into the lower to mid 30s.
With rain chances ending this morning, prefrontal trough will move through the area. Low level westerly wind component and subsidence will allow for a much warmer afternoon. Cooler air will surge over the area tonight. Dry weather is forecasted but weak upper disturbances will provide mid to upper high level cloudiness.
The surface cold front is making its way into the region this morning. Highs this afternoon will range from the mid to upper 60s across the Hill Country and Central Texas to the low to mid 70s across the Rio Grande Plains and the Coastal Plains. Winds will relax by this evening and with clear skies and dry air temperatures overnight will drop into the mid to upper 30s in the Hill Country to the low 40s elsewhere. Saturday night will be warmer, with lows in the mid 40s for most locations due to increased moisture and a little bit more cloud cover.
302 AM CST Fri Dec 6 2019 A cold front has pushed through the area early this morning with cold advection and low clouds moving in behind it. The low clouds look very shallow in nature and models seem to have a decent handle on them. Between the cold advection and clouds, temperatures should struggle to warm up today and we should only see highs in the lower 40s and upper 30s.
315 AM MST Fri Dec 6 2019 Look for mainly dry weather conditions and gradual temperature recovery for Friday and Saturday with high pressure building across the region.
/issued 355 AM CST Fri Dec 6 2019/ The cold front has now made it through most of OK early this morning, with some gusty north winds behind it.
505 AM CST Fri Dec 6 2019 A cold front has pushed through the area early this morning with cold advection and low clouds moving in behind it. The low clouds look very shallow in nature and models seem to have a decent handle on them. Between the cold advection and clouds, temperatures should struggle to warm up today and we should only see highs in the lower 40s and upper 30s.
a cold front was stretched from South Central Oklahoma through Northeast Oklahoma with northerly winds gusting 20-30mph. One limiting factor for the highs will be the amount of cloud cover that remains over the region today.
A ridge will sit over the region today leading to dry and near normal conditions under dissapating cloud cover. Thus, expect cooler temperatures tonight as we lose that cloud cover in many locations today. On Saturday night the midlevel trough over the Pacific Northwest makes landfall.