Aikyam-Lab/Synoptic-Bench huggingface dataset:
A large scale upper level trough will continue to reside over the southeastern CONUS through tonight. At the surface, a weak cold front will move southeast across our area during this period. Despite some forcing from the front and upper trough, very dry mid- level air is expected to prevent any rainfall across our area. In the wake of the cold front, lows are expected to drop into the mid-upper 40s inland by early tomorrow morning with skies gradually clearing from west to east.
1033 PM EST Sat Nov 25 2017 A long wave trough axis reaches well into the southern Gulf of Mexico near the Yucatan Peninsula. A weak node of high pressure is over the Florida Peninsula, while an inverted trough extends to the northwest from western Cuba.
545 PM EST Sat Nov 25 2017 A dry cold front will move through the forecast area this evening.
754 PM EST Sat Nov 25 2017 A cold front crosses the area tonight.
907 PM EST Sat Nov 25 2017 Rain and snow showers are possible tonight with a trough of low pressure before high pressure returns dry weather on Sunday. In fact, given a lack of any substantial additional northerly component overnight, PoPs even in the ridges have been hauled in a bit and QPF cut. Operational models, including the higher resolution ones, really fail to yield much/any QPF in the terrain. Fries All precipitation should depart by sunrise Sunday as high pressure will move in from the southwest. More sunshine will not mean warmer temperatures, however, with most locations only rising into the upper 30s and lower 40s on Sunday.
643 PM EST Sat Nov 25 2017 A cold front crosses the area tonight.
This looks to be about 15 degrees or so cooler compared to last night when cloud cover and a weak cold front were moving through.
652 PM EST Sat Nov 25 2017 A dry cold front will pass through late tonight.
1015 PM EST Sat Nov 25 2017 A cold front exits this evening with limited moisture. Cooler Sunday. Tweaked hourly temps to account for a continued mixed boundary layer, resulting in some ridge/valley splits across the area. Boundary layer winds should gradually relax overnight, though hilltops will likely remain warmer than sheltered locales. Cold front has exited the area with a generally clear sky left in its wake. A weak cold front will cross the area through tonight. No precipitation is expected across the lowlands. Models show H850 temperatures reaching minus 4C over the higher elevations northeast mountains overnight, ranging to 1C across the extreme southern sections.
Aloft, 20z Water vapor imagery easily picking up on large ridge that expands northward well into central Canada.
North Dakota remains under a broad ridge across the northern plains tonight. Mid/high level clouds will accompany this warmer air.
314 PM MST Sat Nov 25 2017 A dry northwesterly flow aloft will be over the region tonight with an upper level ridge stretching from the Desert Southwest then northward through central Utah. On Sunday, the upper level ridge will shift eastward, with its axis stretching from western New Mexico through central CO.
/Issued 644 PM EST Sat Nov 25 2017/ A weak cold front is moving through the area with some sprinkles across the state and mid to high level clouds. Broad trough over the eastern states transitions to southwest flow aloft by mid week ahead of the next upper short wave.
/issued 325 PM EST Sat Nov 25 2017/ An area of high pressure will continue to bring dry air into South Florida tonight with cool temperatures. Models are in good agreement with bringing a reinforcing cold front through the region on Sunday. Once the front moves through, high pressure will build back into the area bringing another shot of drier and cooler air along with it. Towards the end of the week, the GFS and the ECMWF show another cold front moving towards South Florida. A quiet pattern is expected through much of the forecast period for the Atlantic and Gulf waters as high pressure remains in place over the area. A reinforcing cold front will move across the area on Sunday which will help to keep a northerly wind flow in place through the beginning of the week.
Sunday will see lingering clouds in the northwest and mostly sunny through Central PA and the Lower Susquehanna Valley.
936 PM EST Sat Nov 25 2017 High pressure will keep dry conditions across the region into mid week. High pressure will build across the region through the period. Forecast temperatures are on the cooler side of guidance.
High pressure is found over Kansas, which places northwest winds over our area, and the full sun and seasonally deep mixing have brought highs back to the lower to upper 50s today. Certainly not bad for the cold side of yesterday's front! A huge diurnal range in temperatures is expected tonight and Sunday, as the high pressure ridge rides overhead tonight, then slides southeast of the region Sunday, putting the area in southwest flow. The gusty winds of this afternoon will quickly die down by an hour after sunset, and with the ridge going over the area around midnight, we will quickly fall to lower 30s, and bottom out in the 20 to 30 range from northeast to southwest after midnight. Thus, highs will be milder than today's 50s, and highs conservatively should reach the lower 50s northeast to lower 60s southwest.
707 PM EST Sat Nov 25 2017 A dry cold front will cross the region overnight.
546 PM CST Sat Nov 25 2017 A ridge is positioned over the western half of the United States while a trough is now over the eastern half. Cooler air today following the passage of the cold front from yesterday will be replaced with warmer air to cap off this holiday weekend.
645 PM EST Sat Nov 25 2017 High pressure will keep dry conditions across the region into mid week. High pressure will build across the region through the period. Forecast temperatures are on the cooler side of guidance.
715 PM EST Sat Nov 25 2017 With high pressure building into the region, winds are slackening with some valley locations having decoupled around sunset. This is currently leading to a moderate ridge/valley temperature split from ridges to more sheltered valleys and open terrain locations. With drier air gradually advecting in on light northwest flow, a ridge/valley split may occur across the northern sections of the area. A cold front is about half way through the forecast area at 19Z with the front just past Jackson and Williamsburg, and continuing to move southeast. Even so it will be noticeably cooler on Sunday with highs in the mid 40s to lower 50s or about 10 to 15 degrees cooler than today.
Currently a broad ridge covers the western half of the country with a couple of disturbances over the great lakes region.
/Issued 225 PM EST Sat Nov 25 2017/ A weak cold front is moving through the area with some sprinkles across the state and mid to high level clouds. Broad trough over the eastern states transitions to southwest flow aloft by mid week ahead of the next upper short wave.
High pressure to our west will slowly push across the state tonight bringing light winds and rather chilly temperatures, especially across the north. High pressure building into the midsection of the country this afternoon, and northwesterly winds are dominating behind the cold front from last night. Light winds become a little variable in the overnight hours as the ridge moves through the region. By morning, on the north side of the ridge, oriented from the Southern Plains up into the Ohio River Valley, the winds come around to more SSW to start the day. Sunday night, the lows remain in the upper 30s.
1015 PM EST Sat Nov 25 2017 A dry cold front will move east of the forecast area tonight.
931 PM EST Sat Nov 25 2017 A dry cold front will cross the region overnight.
A slow moving cold front currently stretches from Memphis to near Nashville. Ahead of this front temperatures have risen into the lower 60s in many locations, except south of the TN river, where more persistent cloud cover has been.
621 PM EST Sat Nov 25 2017 A cold front exits this evening with limited moisture. Cooler Sunday. Cold front has exited the area with a generally clear sky left in its wake. A weak cold front will cross the area through tonight. No precipitation is expected across the lowlands. Models show H850 temperatures reaching minus 4C over the higher elevations northeast mountains overnight, ranging to 1C across the extreme southern sections.
Lows tonight will be in the middle 30s, with highs Sunday back in the lower to middle 60s.
Not too much to update this evening high pressure centered just off to the west. A sprawling area of high pressure will continue building out of the Mississippi Valley, across the Tennessee and Ohio River Valleys.
A dry cold front will continue moving South across the area and out of the region by late tonight. Weak back-door cold front making its way swd as well, and will be reinforced/pushed swd by another disturbance later tonight. Upper ridge to be squeezed ewd in response to a strong w coast trof as we move into next work week.
721 PM EST Sat Nov 25 2017 Rain and snow showers are possible tonight with a trough of low pressure before high pressure returns dry weather on Sunday. In fact, given a lack of significant northerly component overnight, PoPs even in the ridges have been hauled in a bit and QPF cut. Operational models, including the higher resolution ones, really fail to yield much/any QPF in the terrain. Fries All precipitation should depart by sunrise Sunday as high pressure will move in from the southwest. More sunshine will not mean warmer temperatures, however, with most locations only rising into the upper 30s and lower 40s on Sunday.
Sunday will be even warmer than today with highs from the mid 50s in southwestern Minnesota to the mid 60s in Gregory County.
950 PM CST Sat Nov 25 2017 A weak (cooler) boundary hung up across central Texas is forecast to slowly meander down across southeastern Texas through the early Sunday morning hours. Very subtle cooling will also occur in this boundary's wake and this will regulate warmth to the lower to middle 70s tomorrow under mostly sunny skies and northeast breezes. A weak cold front, which currently extends from near Tyler back to the sw into central Texas will move through SE TX tonight.
A dry cold front should transit the area tomorrow with winds becoming more north to north- northeast. A dry cold front will transit the region Sunday morning with a wind shift to the NNE.
An area of high pressure will drift across the region tonight and into the Ohio River Valley Sunday morning. An area of low pressure will track across southern Canada and will push a cold front into the area Sunday afternoon. The main short wave trough with this system will remain across Canada, so very little forcing will occur over the area with the cold front.
Strong warm high pressure aloft will shift east Sunday as a very mild southwest flow develops.
448 PM CST Sat Nov 25 2017 A Northwest wind will continue today into tonight in the cyclonic flow behind the trof over the eastern U. High pressure over the central plains will move southeast overnight and Sunday and will be centered over central Arkansas by midday Sunday.
501 PM CST Sat Nov 25 2017 VFR conditions will prevail due to high surface pressure building into the area in the wake of a weak cold front.
A cold front is quietly passing through the region this afternoon, marked mainly by a wind shift from west to north-northwest in the Tennessee Valley.
Temperatures ranged from the upper 20s across the far north to the lower 40s south with northwest winds at 10 to 20 mph. The low clouds across far northeast Wisconsin should also dissipate early this evening. Based on yesterdays event with a cool bias on the guidance for highs and temperatures upstream in the 40s and 50s, trended toward the warmer MAV guidance for highs.
As we continue through the week, weak ridging continues with a weak cold front coming through early Wednesday.
With cloud cover in place lows will be mild and generally in the lower 40s over northwest IA to 30 to 35 west of the James where some clear skies may allow for a quick drop before clouds build back west.
The other area of concern is the low level moisture advecting northward into the FA. Most road sfc temperatures are above freezing, or rising, so do not any additional impacts from freezing mist on roadways. High pressure builds into the region by later Wednesday afternoon.
Flow in and around the high has been relatively weak, with little mixing in the boundary layer taking place. A weak cold front will approach the region on Wednesday bringing increased cloud cover and rain showers. Medium range guidance shows a broad swatch of QPF ahead of the cold front, with most of it starting in the mid morning to early afternoon hours.
Low temperatures tonight should be mild and above freezing due to high dewpoints and cloud cover. Temperatures in the east could be 10 to 15 degrees cooler. Progressive pattern early in the period will become more amplified by the end of the period as a ridge builds over the Rockies.
Satellite trends are showing that these clouds are slowly eroding, but it has kept temperatures in our northern counties a few degrees warmer than previously forecasted. This will allow temperatures to warm up to temperatures similar to what we saw yesterday, and maybe even a few degrees warmer in SW Virginia.
1127 PM CST Mon Nov 13 2017 A broad area of high pressure positioned off to the northeast is providing southerly flow over most of the CWA today. The ridge axis from the high pressure is also extending into the region. This is trapping the low level moisture over the region. Mid level flow is out of the southwest which is over running the low level moisture.
A cold front has moved into Idaho this evening and showers have largely ended except along the Cascades where upslope flow is keeping showers going along the Cascade crest. A cold front moved through WA and OR today. The highest winds will be in the Yakima Valley near the Cascades where the potential exists for mountain waves to bring these winds to the surface. Ridgetops may be breezy, particularly in central OR. Tuesday night another trough and frontal system will approach the coast.
/issued 224 PM CST Mon Nov 13 2017/ Wx map shows high pressure continuing to ridge over the area as the main center builds over the Eastern U. Temperatures this afternoon in the lower to mid 70s.
1236 AM EST Tue Nov 14 2017 High pressure builds on Tuesday. Cold front crosses late Wednesday.
Temperatures today will again be generally in the lower 70s with nothing in the way of precipitation to speak of. The main story later in the week and into the weekend will be the approach of another cold front.
157 AM EST Tue Nov 14 2017 High pressure over the Ohio Valley will drift southeastward and extend across southern Virginia and the Carolinas Tuesday night and Wednesday.
With high pressure building in the SE United States the east northeast wind flow will persist.
Upper level ridge and mid level drying will lead to generally quiet weather through the short term period.
836 PM PST Mon Nov 13 2017 Tonight will be windy following the passage of a cold front.
The area of fog potential should be further north and east than the last night with the strong warm advection at h850 dominating the low level temperature profiles across southwest and south central North Dakota resulting in less fog potential.
Breezy conditions are expected to develop in the wind corridors during the overnight hrs as weak pressure falls spread across the high plains of eastern MT and northeast WY. Tuesday will be another very warm day with H7 temperatures between +2 and +4 deg C across much of the CWA, except far northwest where a cold front will make an earlier arrival. Highs Wednesday will be 10-15 deg cooler than Tuesday, but with considerably less wind.
A cold front will move across the Plains Tuesday afternoon and evening.
Lows tonight are expected to say generally above freezing, precluding a freezing drizzle threat. Forecast focus on showers Tuesday night then an intense cyclone to impact much of the Midwest/Great Lakes late this week and into the weekend. Behind the system will be a blast of arctic air! Tuesday night into Wednesday morning: A weak upper level trough will swing across the area providing some light rain.
446 AM EST Tue Nov 14 2017 High pressure and dry air will remain in control of the region through Wednesday.
301 AM CST Tue Nov 14 2017 Lee troughing to our west will strengthen through tonight and surface winds will become more westerly. Both of these factors should help to erode the low stratus deck that has persisted for the past several days. Clearing skies and downsloping warming component of the wind will result in warmer temperatures today. Areas that see more sun earlier will warm more quickly with the highest temps in the far southwestern Panhandle.
304 AM EST Tue Nov 14 2017 High pressure builds in from the northwest today and Wednesday, keeping conditions cool.
415 AM EST Tue Nov 14 2017 High pressure in central Ohio will move northeast this evening. Southerly flow will bring in warmer air and more moisture, eventually getting wrung out as showers with the next cold frontal passage on Wednesday.
317 AM EST Tue Nov 14 2017 High pressure should result in mainly dry weather through Wednesday morning. Rain chances return with a late Wednesday cold front. Included a chance of freezing drizzle mainly for elevations above 3500 ft in WV/MD, though any occurrence should be isolated with no significant impacts expected due to warm pavement temperatures. Mainly clear skies are expected tonight as the high continues EWD.
Low temperatures tonight should be mild and above freezing due to high dewpoints and cloud cover. Temperatures in the east could be 10 to 15 degrees cooler.
1220 AM EST Tue Nov 14 2017 Other than some patchy light drizzle early tonight, high pressure should maintain dry weather through Tuesday night. Rain chances return with a late Wednesday cold front. Included a chance of freezing drizzle mainly for elevations above 3500 ft in WV/MD, though any occurrence should be isolated with no significant impacts expected due to warm pavement temperatures.
251 AM EST Tue Nov 14 2017 High pressure builds on Tuesday. Cold front crosses late Wednesday.
1252 AM EST Tue Nov 14 2017 Drying has occurred in the wake of the cold front. The pressure ridge behind the front will dominate through Wednesday.
944 PM PST Mon Nov 13 2017 Tonight will be windy following the passage of a cold front.
Dew points reached the lower 40s today from OGA to ANW and points east and mid 40s in NW KS. Trended max temps up in the west due to downslope flow, a 15C thermal ridge, and decent mixing. A cold front approaches NW Neb.
Between 03-06z, a migratory short wave trof moving through the Plains will begin spreading large scale ascent into central and northeast MO. Large scale lift will increase significantly across the CWA overnight as the short wave trof moves into the mid/upper MS Valley and the LLJ veers and strengthens. Glass Cold front to move through region on Wednesday with showers and isolated thunderstorms, mainly during the morning hours, then taper off by early afternoon as system exits.
We continue to see some northeast to east weak flow around this high pressure. This low level moisture remains stuck underneath a strong inversion and drier air aloft. The warmer spots will be those in the southwest where more sun should be seen overall. While the high pressure does move east think the combination of clearing skies and weak flow will lead to a shot of at least some ridge/valley splits in the eastern valleys. The attendant cold front and weak height falls will progress eastward toward the Ohio and Tennessee Valleys through the day on Wednesday. An area of high pressure is now centered across southern Ohio tonight and we are seeing light north and east flow across eastern Kentucky.
Freezing fog is possible. The combination of fog and temperatures at or below freezing may create slick spots on the roads. Freezing fog is also being reported, though with warmer road temps not sure how much of an impact this will cause to travel. Still, think its reasonable to mention the potential for slick spots on the roads this morning due to the combination of fog and temps below freezing. Even outside of the advisory area, there is potential for some patchy dense fog/freezing fog, so have handled that with an SPS for now. If not, probably will see highs in the low to mid 40s, especially in the northeastern portions of the CWA.
Lee troughing will develop later today and southerly winds will increase along with clearing skies.
Temperatures struggled to warm into the lower 50s, while light south breezes persisted. This broad ridging pattern will keep temperatures mild over the next several days. Wednesday night will be chilly, with readings in the low to mid 30s.
357 AM CST Tue Nov 14 2017 Below-seasonal temperature trends will finally come to an end today as a weak mid-level ridge advects overhead atop steady southerly return flow at the surface. High temperatures will approach the mid to upper 50s across eastern Kansas and western Missouri, with values in the lower 50s across central and eastern Missouri. Increased 850 hPa flow ahead of lee-side low pressure to the west will aid in widespread ascent for light rain and drizzle throughout the morning and afternoon hours today. This feature will force the previously mentioned lee-side low eastward and provide for modest ascent ahead of and along the surface cold front Tuesday night into Wednesday morning.
Moist southerly flow today, ahead of a cold front dropping through the Dakotas, will provide fuel for possible precip tonight.
Expecting temperatures in our eastern counties in the low to mid 50s, while counties along the CO/KS line could see highs near 70. Southwest winds are pulling in a warmer airmass to the area, causing this delineation between our western and eastern CWA. Expecting zonal flow with a trough passage to the north of our area on Tuesday into Wednesday, this will produce a brief surge of wind gusts up to 25 knots across the area Tuesday night into Wednesday. Ridging to our west will continue to build and eliminate any precipitation chances.
We continue to see some northeast to east weak flow around this high pressure. This low level moisture remains stuck underneath a strong inversion and drier air aloft. The warmer spots will be those in the southwest where more sun should be seen overall. While the high pressure does move east think the combination of clearing skies and weak flow will lead to a shot of at least some ridge/valley splits in the eastern valleys. The attendant cold front and weak height falls will progress eastward toward the Ohio and Tennessee Valleys through the day on Wednesday. The area will be affected by two cold fronts during the period. After a dry finish to the work week, a much more potent cold front will move in from the northwest with our next round of rain during the weekend.
Should see the lower cu cigs persist through much of the day and evening over E TX/SE OK/SW AR, with AC cigs spreading SE across the remainder of the region during the afternoon and evening.
240 AM EST Tue Nov 14 2017 Surface ridging with just enough low level drying this morning to allow for partial clearing of the low clouds. Yesterday's highs reached in the lower 40s with clouds, today temperatures should have no problem making it into mid 40s with the increasing southerly flow and developing sunshine, and probably even a few upper 40s. Consolidating upper level PV/strengthening upper level trough impacting the Great Lakes Region Wednesday-Wednesday Night. Cold front to track through during the afternoon, with good dynamics/forcing to support showers/pops near 100 percent.