Aikyam-Lab/Synoptic-Bench huggingface dataset:
A cold front will shift winds to the north-northwest late this morning and will become breezy through late afternoon particularly at KLBB and KPVW. /issued 413 AM CST Mon Feb 20 2017/ An upper level trough axis will pass overhead today after yesterday's disappointing precipitation event. Strong subsidence and atmospheric drying will occur today and tonight in the wake of this trough leading to a day of full sun. A cold front will move through the area later this morning and will bring brisk north to northwesterly winds.
318 AM CST Mon Feb 20 2017 Upper level ridging is currently centered over our area and with just a few cirrus clouds around some fog has developed. An upper trough will slowly work eastward and a closed low will develop tonight over southeast TX. Latest NAM is not as quick to close the trough leading to more QPF up our way. Regardless, showers should hold off until the daylight hours on Tuesday as the upper trough/low moves southeastward.
559 AM EST Mon Feb 20 2017 High pressure expanding across the eastern Great Lakes will establish a strengthening east-southeast flow during the course of the day. Dry air associated with this high will provide nothing more than high clouds during the day. * None Longwave trough emerging over the front range this morning exists as a result of a brief phased period between lower amplitude Pacific jet energy and the wave that came onshore in California a couple of days ago. Through mid-day today, this spells downstream ridge amplification overhead and light southeast flow at the surface in the wake of departing high pressure. Cirrus will spill across the ridge axis providing the only cloud cover on an otherwise clear day. A band of showers is modeled to be sustained by a weak prefrontal trough associated with the weakening low-level jet axis.
638 AM EST Mon Feb 20 2017 Spring like conditions will continue through the end of the work week as a strong upper level ridge remains in place. A strong upper level ridge now centered over the Mid Mississippi Valley will shift east and move over the forecast area today. With the clouds think temps will be a couple of degrees cooler than yesterday. temps will only be a couple of degrees cooler than today.
Upper level system continues to approach the area with the upper level trough axis now near the Big Bend and vort max along and just east of the Rio Grande. With upper low circulation still to the west will expect cloud cover to linger for much of the area. Though much of the highest pwats (1. By late this evening all convection should be offshore as upper low finally shifts eastward.
637 AM EST Mon Feb 20 2017 High pressure will drift slowly east across the region today. Morning fog will give way to afternoon sunshine and warmer temperatures. A very weak cold front will move through on Tuesday, allowing for scattered rain showers. These highs to range from the lower 60s northeast to the upper 60s southwest. Northern stream upper trough to track through the northern plains today and though the Great Lakes Tuesday. NAM soln phases this northern system with a southern upper low and therefore is a little slower and much more robust with pcpn event. In waa pattern mild temperatures to continue tonight with lows from the mid 40s northeast to the lower 50s southwest.
Current water vapor imagery and RAP upper air analysis indicates the closed low is now out over the Atlantic with a strong upper level ridge building into the region. The ridge will lead to subsidence and dry conditions throughout the short-term forecast. Much above normal temperatures will continue into the overnight hours as the ridge axis passes just to the east.
1004 AM EST Mon Feb 20 2017 Only minor trend adjustments to near term dewpts and sky cover with just some cirrus across the area today as regime staying ridge dominated. Another unseasonably warm day as the H5 ridge moves over the CWA with max temps approaching record values today. This ridge will move off the east coast with the next short wave, currently over the southern plains, moves into the southeast Tuesday. With a low level east flow Tuesday, max temps will be slightly cooler, but still above normal.
345 AM EST Mon Feb 20 2017 Spring like conditions will continue through the end of the work week as a strong upper level ridge remains in place. A strong upper level ridge now centered over the Mid Mississippi Valley will shift east and move over the forecast area today. With the clouds think temps will be a couple of degrees cooler than yesterday. temps will only be a couple of degrees cooler than today.
Temperatures will reach near 80 degrees inland with cooler temperatures near the coast due to onshore winds.
352 AM CST Mon Feb 20 2017 Forecast highlights in the short term period will be morning fog, chances for light rain or freezing rain, and continued mild temperatures. Currently, strong mid level S/WV trough lifting north-northeast into the Northern Plains. With temperatures near freezing and road surface temperatures at or just below freezing, will maintain a mention for freezing rain in the forecast this morning until we warm up later. Thermal profiles suggest either sleet or light freezing rain.
High pressure in control of local weather over the next 24hrs with dry conditions.
Dry weather and sunny skies will continue today with deep layer ridging in place. High temperatures will be well above average, in the upper 70s north to lower 80s south (except lower 70s at the beaches, where the light onshore winds from the cooler Gulf shelf waters will partially offset strong insolation).
944 AM EST Mon Feb 20 2017 High pressure dominates the weather over the eastern half of the U. High pressure has set up over the eastern half of the U.
Latest water vapor imagery continues to indicate the eastward progression of an upper trough approaching the Big Bend area, along with nearly phased, smaller amplitude energy pushing into the central plains.
547 AM CST Mon Feb 20 2017 Continued warm but more active weather is in store today as an upper level trough and Pacific front approach from the west.
Continued warm but more active weather is in store today as an upper level trough and Pacific front approach from the west.
The storms will push through the Mid and into the Lower RGV and across the Northeastern Ranchlands by about daybreak.
Happy Washington's Birthday! Chattanooga Airport, TN 74 52 70 53 / 0 0 30 60 Knoxville McGhee Tyson Airport, TN 72 49 68 51 / 0 0 20 60 Oak Ridge, TN 74 48 68 51 / 0 0 20 60 Tri Cities Airport, TN 72 46 66 49 / 0 0 10 60.
Meanwhile, the culprit responsible is the elongated N-S upper trough over Ern CO S into W TX this morning, which will continue to march E across Cntrl OK/TX today. The short term progs continue to depict the upper trough closing off late tonight over E TX, with the low drifting across much of LA Tuesday. Convection should remain ongoing this evening over Ncntrl LA/Scntrl AR before diminishing late as drier air begins to entrain E ahead of the closed low.
Busy weather this morning with a broad low pressure system off the Pacific Northwest sending in ample moisture and wind across the forecast area through early Tuesday. This low is currently causing coastal winds to increase with Gold Beach reporting a gust to near 50 mph at 3am. Additional gusts near 60 mph are possible along the coast through 18z as the low moves north across Reedsport through late morning. Overall the low level winds don't appear as strong with this next low and am not confident warning level winds are in store for the coast.
Stratus coverage remains somewhat stagnant in the ridges and generally along and south of I-68 early this morning.
This activity is part of a larger train of moisture advecting from the eastern Pacific and Gulf of Mexico, ahead of a deepening neautral tilt upper trough moving into the Central Plains. The upper level system is in the early beginnings of becoming a cutoff low as a broad upper level trough continues to cross into the Pacific Northwest.
The upper level trough responsible for the convective weather still remains west of the forecast area. An enhanced area of ascent appears to be lifting north along the eastern flank of the upper trough. Rain will shift east of all counties mid to late afternoon as the upper trough continues trekking east across the state. The upper level system is progged to transform into a cut-off low Tuesday before shifting east-southeast across the northern Gulf.
354 AM CST Mon Feb 20 2017 Strengthening southerly flow will prevail over the Midsouth today, in advance of an approaching longwave upper trof over the southern plains. North MS will likely receive the most rain on Tuesday, near the northeast quadrant of a forming closed upper low.
310 AM EST Mon Feb 20 2017 Upper level heights will build across the region through tonight ahead of an upper trough/low digging southeast across Texas. Highs will be in the low to mid 70s along the east coast due to the onshore flow, with upper 70s to lower 80s inland. Cirrus clouds will increase from the west tonight ahead of the upper trough.
339 AM CST Mon Feb 20 2017 The full-latitude upper-level trough will continue to cross the area over the next 24 hours.
327 AM CST Mon Feb 20 2017 The upper level trough axis extended from the western High Plains south into the Big Bend of Texas this morning at 0830Z. Short term high resolution models continue to move the upper trough axis eastward with the trough axis moving through eastern Kansas this evening. 925mb-850mb winds will continue to veer to the southwest through the morning as the mid and upper level trough move east. This evening the front will move off to the east into Missouri and the upper level trough axis exits eastern Kansas around 06Z Tuesday.
251 AM EST Mon Feb 20 2017 High pressure will build from the west today. Cooler air will seep south tonight into Tuesday.
Precip should continue to diminish in areal coverage through the remainder of the morning as drier air builds in from the west in the low to mid levels /KCRP VAD Wind Profile indicates west flow from 4kft to 11kft/. potent mid/upper level trough axis is still to the west of the CWA and there remains a slight chance that elevated convection may develop this afternoon.
Latest trends suggest the northward extent of the fog will be limited and have confined the advisory to locations along/south of the Highway 84 corridor. The southern end of the trough is expected to cut off from the primary westerlies and form a closed low that will slowly move across the region early this week. While a few showers could moving into western portions of the forecast area late this afternoon, the greater rain threat should hold off until tonight as the preceding ridge will tend to delay the onset of showers.
413 AM CST Mon Feb 20 2017 An upper level trough axis will pass overhead today after yesterday's disappointing precipitation event. Strong subsidence and atmospheric drying will occur today and tonight in the wake of this trough leading to a day of full sun. A cold front will move through the area later this morning and will bring brisk north to northwesterly winds.
1027 AM EST Mon Feb 20 2017 High pressure and dry weather is forecast through Tuesday with unsettled weather from Tuesday night through the end of the week. The upper ridge axis will also be in the area. Satellite trends support some high cloudiness especially tonight as the upper ridge shifts a little farther eastward. Wind will be light with the ridge in the area area but mainly easterly near 10 mph during the time of greatest mixing this afternoon. A southern stream trough will close off over the Northern Gulf of Mexico by late Tuesday. Temperatures will continue above normal with highs in the low to mid 70s.
High surface pressure will be extending southward down the Florida peninsula today through Tuesday as an amplified but narrow upper ridge slides eastward across the eastern portion of the country and the eastern Gulf. A mid level trough will deepen and is expected to cutoff over the Red River Valley by early Tuesday.
The leading edge of a cold front extended from Phillip SD through Ogallala and Imperial. An upper level trough and Pacific cold front will advance quickly east across the region today, bringing sunny skies to most of western Nebraska by 18z. 850mb temperatures will be cooler today behind the Pacific front at 6-10C, however with sunny skies and deep mixing, highs in the 60s will be achieved.
757 AM EST Mon Feb 20 2017 High pressure and dry weather is forecast through Tuesday with unsettled weather from Tuesday night through the end of the week. The upper ridge axis will also be in the area. Satellite trends support some high cloudiness especially tonight as the upper ridge shifts a little farther eastward. Wind will be light with the ridge in the area area but mainly easterly at 5 to 10 mph during the time of greatest mixing this afternoon. A southern stream trough will close off over the Northern Gulf of Mexico by late Tuesday. Temperatures will continue above normal with highs in the low to mid 70s.
548 AM EST Mon Feb 20 2017 High pressure will build in from the northwest today and this evening and crest over the region late tonight into Tuesday morning. After the high moves east Tuesday afternoon.
High pressure has established itself over the region on this holiday Monday. Easterly to northeasterly flow today will allow many inland portions of South Florida to warm up and warmer guidance was favored for the forecast while the easterly pattern remains. The high pressure over the region should act to suppress convection.
Weakening upper low lifting from the 4 corners across Colorado this afternoon, with periods of moderate/heavy snow along the Continental Divide and mainly isolated showers/sprinkles elsewhere. For tonight, upper low/trough lifts northeast through the area, with precip ending from south to north along the Continental Divide overnight. Will keep current advisories up into the evening, with a few more inches of snow set to accumulate over the higher peaks by midnight. On Monday, dry weather returns to the region as upper ridge builds across the srn Rockies.
1019 AM EST Mon Feb 20 2017 High pressure will build from the west today. Cooler air will seep south tonight into Tuesday.
A cold front associated with it will shift through western and central North Dakota, with increasing chances for precipitation after midnight. The bulk of the precipitation should be rain, however, light freezing rain is a possibility across north central North Dakota tonight into Monday morning. Temperatures should only marginally support freezing rain for a few hours during the early morning hours. Therefore, impacts should be limited, but even a brief period of freezing rain can cause hazardous travel. The system looks a little faster than previously forecast, so the bulk of the low level cape and shear should be further east by the time afternoon heating kicks in.
/issued 354 AM CST Mon Feb 20 2017/ Strengthening southerly flow will prevail over the Midsouth today, in advance of an approaching longwave upper trof over the southern plains. North MS will likely receive the most rain on Tuesday, near the northeast quadrant of a forming closed upper low.
High High amplitude mid/upper trough approaching with ridge across the lake Michigan area. Ridge moves off to the eastern Great lakes tonight as the trough flattens as it moves across Wisconsin tonight. Upper level divergence increases later this afternoon and evening, weakening as the trough moves across eastern Wisconsin. Southerly flow continues with 850 moisture advection noted associated with increasing LLJ ahead of approaching trough.
321 AM EST Mon Feb 20 2017 Aloft - A long wave trough extended from the Canadian Rockies to north-central Mexico while a ridge reached from the Gulf of Mexico to over and west of Hudson Bay. Surface - A low pressure center was on the ND/SD line. with a warm front across the upper Mid-West. and a cold front south to the central high plains. High pressure over James Bay stretched down to western Cuba. The trough and ridge slide east. with the southern end of the trough deepening into a low over the northwest Gulf while the ridge reaches from the Bahamas to the Canadian Maritimes. The deep layer ridging moving across the area will dominate with a stable.
Dense fog developed over the Devils Lake region, where the low level moisture moving northward has encountered the coolest sfc temps.
/issued 321 AM EST Mon Feb 20 2017/ Aloft - A long wave trough extended from the Canadian Rockies to north-central Mexico while a ridge reached from the Gulf of Mexico to over and west of Hudson Bay. Surface - A low pressure center was on the ND/SD line. with a warm front across the upper Mid-West. and a cold front south to the central high plains. High pressure over James Bay stretched down to western Cuba. The trough and ridge slide east. with the southern end of the trough deepening into a low over the northwest Gulf while the ridge reaches from the Bahamas to the Canadian Maritimes. The deep layer ridging moving across the area will dominate with a stable.
542 AM CST Mon Feb 20 2017 /12Z TAFs/ With the upper level low still to our west and deep south to southwest flow above the cool surface layer, additional areas of rain are developing and spreading north this morning. The upper level trough responsible for the convective weather still remains west of the forecast area. An enhanced area of ascent appears to be lifting north along the eastern flank of the upper trough. Rain will shift east of all counties mid to late afternoon as the upper trough continues trekking east across the state. The upper level system is progged to transform into a cut-off low Tuesday before shifting east-southeast across the northern Gulf.
908 AM EST Mon Feb 20 2017 High pressure will drift slowly east across the region today. Morning fog will give way to afternoon sunshine and warmer temperatures. A very weak cold front will move through on Tuesday, allowing for scattered rain showers. These highs to range from the lower 60s northeast to the upper 60s southwest. Northern stream upper trough to track through the northern plains today and though the Great Lakes Tuesday. NAM soln phases this northern system with a southern upper low and therefore is a little slower and much more robust with pcpn event. In waa pattern mild temperatures to continue tonight with lows from the mid 40s northeast to the lower 50s southwest.
616 AM CST Mon Feb 20 2017 Rain and isolated thunderstorms continue to push off to the east, slightly ahead of schedule, with the upper level trough now along the Rio Grande Valley. An upper level trough currently near the Big Bend moves across our area today. Ahead of the trough, a band of showers and thunderstorms producing moderate to heavy rains with a trailing area of light to moderate rains and isolated thunderstorms gradually moves off to the east. The heaviest rains will be near the Coastal Plains to along the Highway 77 corridor during the predawn hours with an additional 1 to 3 inches of rain expected, causing some minor flooding. Tonight into Tuesday, the upper level trough slowly closes off and moves to the lower Mississippi Valley/Central Gulf Coast while an upper level ridge builds into Western Texas.
434 AM EST Mon Feb 20 2017 High pressure will drift slowly east across the region today. Morning fog will give way to afternoon sunshine and warmer temperatures. A very weak cold front will move through on Tuesday, allowing for scattered rain showers. These highs to range from the lower 60s northeast to the upper 60s southwest. Northern stream upper trough to track through the northern plains today and though the Great Lakes Tuesday. NAM soln phases this northern system with a southern upper low and therefore is a little slower and much more robust with pcpn event. In waa pattern mild temperatures to continue tonight with lows from the mid 40s northeast to the lower 50s southwest.
608 AM EST Mon Feb 20 2017 High pressure and dry weather is forecast through Tuesday with unsettled weather from Tuesday night through the end of the week. A southern stream trough will close off over the Northern Gulf of Mexico by late Tuesday. Temperatures will continue above normal with highs in the low to mid 70s.
357 AM CST Mon Feb 20 2017 (Today and Tonight) Today will mark the start of another warming trend which will continue until the next cold front late week. Highs this afternoon, under mostly sunny skies, will be well above normals for this time of year and range from the lower to mid 70s. Tonight, lows will range from the lower to mid 40s.
343 AM EST Mon Feb 20 2017 High pressure and dry weather is forecast through Tuesday with unsettled weather from Tuesday night through the end of the week. A southern stream trough will close off over the Northern Gulf of Mexico by late Tuesday. Temperatures will continue above normal with highs in the low to mid 70s.
322 AM EST Mon Feb 20 2017 High pressure will build in from the northwest today and this evening and crest over the region late tonight into Tuesday morning. After the high moves east Tuesday afternoon.
557 AM EST Mon Feb 20 2017 Spring like conditions will continue through the end of the work week as a strong upper level ridge remains in place. A strong upper level ridge now centered over the Mid Mississippi Valley will shift east and move over the forecast area today. With the clouds think temps will be a couple of degrees cooler than yesterday. temps will only be a couple of degrees cooler than today.
910 AM EST Mon Feb 20 2017 High pressure will build in from the west today and will crest over the area tonight. High pressure will shift offshore on Tuesday as a warm front approaches from the west.
930 AM EST Mon Feb 20 2017 High pressure will build from the west today. Cooler air will seep south tonight into Tuesday.
935 AM EST Mon Feb 20 2017 Spring like conditions will continue through the end of the work week as a strong upper level ridge remains in place. A strong upper level ridge now centered over the Mid Mississippi Valley will shift east and move over the forecast area today. With the clouds think temps will be a couple of degrees cooler than yesterday. temps will only be a couple of degrees cooler than today.
A frontal boundary will continue to drift southeast overnight, with a cooler airmass gradually sinking into the cwa. Tuesday night becomes fairly active as mid level trof moves across the forecast area. According to the GFS a pretty good pv anomaly/trop fold will accompany the trof passage. At this point any snow accumulation looks iffy with sfc temps around or above freezing.
152 AM EDT Tue Oct 11 2016 A warming southerly flow as high pressure system in New England allows for a warming trend into Wednesday. Later Wednesday afternoon and into the overnight on Wednesday, a cold front is expected to move through with showers and a slight chance for thunderstorms.
Drier and cooler air moving in behind a cold front will bring mostly sunny skies to the area today. Wednesday will be sunny and afternoon temperatures will quickly rebound to seasonal normals with high pressure at the surface and a ridge aloft. Major pattern change on the way as a large upper level low in the Gulf of Alaska directs a substantial amount of sub-tropical moisture toward the Western US.
635 AM EDT Tue Oct 11 2016 Cool and dry Canadian high pressure will build over the region this week, bringing the coolest air of this early Fall season.
313 AM CDT TUE OCT 11 2016 High pressure off to our northeast will shift winds to the south, which will keep temperatures above seasonal normals today through Wednesday.