Aikyam-Lab/Synoptic-Bench huggingface dataset:
940 AM EDT Wed Aug 28 2019 Central FL remains under a sultry and somewhat unstable as the FL Peninsula has become sandwiched btwn a weak hi pres ridge over the ern GOMex and newly formed T. The lcl Atlc is sandwiched btwn a weak hi pres ridge over the ern GOMex and newly formed T.
337 AM MDT Wed Aug 28 2019 A dry cold front will push through the region today, leading to increasing northwest winds.
517 AM EDT Wed Aug 28 2019 A cold front is working southeast across east Kentucky this morning with a band of showers about to exit southeast Kentucky. The fog will burn off quickly after sunrise, as we start to mix into the northwesterly winds behind the exiting cold front. With cross over temperatures expected to be in the mid to upper 50s heading into tonight and low temperatures likely into the lower 50s, this should set up some locally dense valley fog. A beautiful Thursday is on tap as high pressure set up overhead and afternoon highs top out in the upper 70s after the cool start. A cold front will be moving southeast through the Midwest under the upper level trough.
606 AM CDT Wed Aug 28 2019 A nicer day in store with less wind and warmer temperatures as surface ridging shifts to the east and the low level flow becomes west/southwesterly. Models are in good agreement with a cold front sliding across our area on Thursday morning, exiting our far southeast by 18Z. It will still be decently warm on Thursday with highs in the mid 70s north of Interstate 90 to lower 80s through the lower MO River corridor into northwestern IA.
Early this Wednesday morning a cold front had moved through Middle Tennessee, sweeping out showers that impacted mainly the northern counties and Plateau last evening. The northwest upper flow bringing our "cool" weather will only last a couple of days, then upper level heights will rise as a western Atlantic ridge bridges with a hot ridge over the southwest states.
The overnight water vapor satellite loop and RAP analysis revealed a northwest flow pattern aloft across the Central and Northern Plains in the wake of the latest trough, which was moving across the Upper Midwest overnight. Temperatures this afternoon will top out in the lower 80s across the southwest Kansas region. Farther east, dewpoints in the mid to upper 60s to near 70 will stunt the warm up a little, with highs in the lower 90s. Heat Indices will likely be higher in the east because of the greater relative humidity along with the lower 90s temperatures.
In the upper levels, a large trough drips down through the Midwest. At the surface, high pressure centered over western Kansas continues towards central Kentucky. This high will provide the nice weather for today and the days to come. With the anticyclonic flow around the high blows a northwest wind over the CWA. This moisture, and the cooler temperatures from the clearing skies, have sparked the formation of fog, but a battle is raging because the cold front that moved through yesterday brought drier air with it.
For tonight, combination of dry air and slightly warmer temperatures at KTYS and KCHA should prevent fog development.
/Issued 340 AM EDT Wed Aug 28 2019/ Today will bring noticeable changes as a cold front sweeps through the area. The cold front will make headway from northwest Georgia this morning all the way through the southeast CWA by this evening.
545 AM CDT Wed Aug 28 2019 High pressure centered NW of the CWA this morning will bring at least 24 hours of dry weather with mostly clear skies to the area. Highs today will be in the low to mid 80s with lows tonight in the upper 50s east to low 60s west.
The actual downslope event will end early Thursday morning as a dry cold front moves through the region and ushers in north northwesterly winds.
140 PM PDT Wed Aug 28 2019 Very warm summer weather is forecast this week as high pressure aloft builds over the Southwest.
The cold front that slipped by last night now well south and while temps right now still quite warm, dewpoints have dropped into the low/mid 60s. SFC/LL high pressure now building in behind, while upper trough axis swings across. SFC/LL high pressure will remain over the mid-south the next bunch of days while upper trough dampens and ridges build in as well. If it is the EURO, the storms will get caught up in the ML/UL trough in the extreme east and move up the eastern Seaboard.
Despite clear skies overnight, low temperatures will range from the low 50s across the northwest and the low 60s across north central and into south central Nebraska.
208 PM EDT Wed Aug 28 2019 A cold front will pass through the forecast area tonight and stall near the coast Thursday.
A cooler night is in store, with lows in the 60s across much of the area.
343 PM CDT Wed Aug 28 2019 Wx map shows diffuse cool front/trough boundary over NE TX/N LA. Radar showing scattered thunderstorms developed over C and SC LA where the high temperatures reached the lower to mid 90s this afternoon.
1212 PM CDT Wed Aug 28 2019 The cyclonic circulation around the deep upper level trough that was centered north of Lake Superior, will slowly move eastward and fill today. Temperatures will be a few degrees warmer today, especially in western Minnesota where return flow develops. This evening, and overnight, the stronger southwest winds will cause temperatures to rise along and east of the Buffalo Ridge in west/southwest Minnesota. Temperatures on Thursday will likely be reached early in central Minnesota where the cold front will arrive around sunrise. Following the cold front Thursday, cool high pressure will build back in for the weekend.
Cooler than normal temperatures today will slowly moderate back to more normal readings through the end of the work week. Cool temperatures are expected tonight with lows in the low to mid 50s.
342 PM EDT Wed Aug 28 2019 A cold front and its associated band of rain showers will push east across the Susquehanna Valley late today and exit off the Mid Atlantic Coast tonight.
236 PM EDT Wed Aug 28 2019 A cold front will pass through the forecast area tonight and stall near the coast Thursday.
328 PM EDT Wed Aug 28 2019 Northwest flow aloft overspreads the region as most of the state is situated between deep troughing over the eastern CONUS and ridging over the Gulf of Mexico, with similar surface flow as well owing to high pressure centered to the west over the Gulf. Heading into the weekend, an upper-level area of low pressure is expected to develop near the Bahamas and retrograde westward across the state drawing deep moisture northward across the region once it moves into the Gulf of Mexico. Upper ridging is expected to build westward across the western Atlantic in its wake, which leads to the next forecast challenge.
High pressure centered NW of the CWA this morning will bring at least 24 hours of dry weather with mostly clear skies to the area. Highs today will be in the low to mid 80s with lows tonight in the upper 50s east to low 60s west.
157 PM MDT Wed Aug 28 2019 Upper ridging covers the western CONUS, keeping the northern plains in northwest flow. Surface map shows low pressure over Saskatchewan, with a warm front extending through the CWA, and a cold front approaching from the northwest. Behind the warm front, winds are southwesterly and light, and temperatures are rising into the 70s and 80s. The cold front will begin pushing into the region tonight, having little effect on the weather besides a wind shift and some cooler temps for Thursday.
A cold front will move through Thursday evening with chances for showers and thunderstorms.
Models suggest that isolated showers or non severe thundershowers could spark in the early morning hours through around sunrise with warm air advection arriving along with the low level jet nosing into the Sioux City Metro area. Cold front tracks west to east through the forecast area on Thursday morning, with a slightly quicker pace than model runs from 24 hours ago. Highs hear could easily mix into the low to mid 80s.
Hwy 2 this evening but cannot rule out brief sprinkles or light showers as far south as the Highway 200 corridor. Behind the front, winds will shift to the northwest and remain breezy with cooler and drier air pushing into the region for Thursday.
226 PM CDT Wed Aug 28 2019 An upper ridge is centered over the southwest part of the country and an upper trough is over the Great Lakes area and the northeast part of the country. Temperatures today across West Texas and southeast New Mexico are cooler courtesy of the front and cloud cover across the area.
Passing cold front now well south of the area, with dewpoints now down in the mid 60s.
1027 AM MDT Wed Aug 28 2019 Bumped up winds a bit this afternoon and evening as we will see gusts up to at least 35 mph for a couple hour period behind a dry cold front. -Mottice A dry cold front will push through the region today, leading to increasing northwest winds.
A Canadian cold front will drop into the region late this evening, shifting winds first northerly and easterly overnight. A cooler airmass will settle into the region overnight, and easterly sfc flow will keep highs in the mid 70s to around 80 degrees for Thursday.
1146 AM EDT Wed Aug 28 2019 A cold front will pass through the forecast area tonight and stall near the coast Thursday.
314 PM EDT Wed Aug 28 2019 High pressure and dry air spreads eastward across the region tonight and for the remainder of the week. Really mainly a quick shot of drier air and cooler, with sunshine anticipated for Thursday. Models are in decent agreement of several days of dry conditions for the area this weekend due to ridging/high pressure briefly building in overhead. As the ridge begins to slowly drift east, we turn to a more southerly flow, introducing an isolated chance of showers, mainly for the Blue Ridge and Piedmont.
925 mb temperatures also seem to be the lowest in most guidance as well.
1228 PM CDT Wed Aug 28 2019 A nicer day in store with less wind and warmer temperatures as surface ridging shifts to the east and the low level flow becomes west/southwesterly. Models are in good agreement with a cold front sliding across our area on Thursday morning, exiting our far southeast by 18Z. It will still be decently warm on Thursday with highs in the mid 70s north of Interstate 90 to lower 80s through the lower MO River corridor into northwestern IA.
Can't rule out a couple of sprinkles lingering across the higher elevations in the east where a bit of a congested cumulus field remains in upslope flow, but overall the forecast looks dry and mostly sunny for the remainder of the afternoon. Chattanooga Airport, TN 87 62 86 62 / 10 10 0 0 Knoxville McGhee Tyson Airport, TN 85 59 85 58 / 10 10 0 0 Oak Ridge, TN 85 60 84 59 / 10 10 0 0 Tri Cities Airport, TN 83 58 80 59 / 30 10 0 0.
249 PM CDT Wed Aug 28 2019 Models show the overall pattern for several more days will continue to be with the upper ridge over portions of the western U.
334 PM CDT Wed Aug 28 2019 Small precipitation chances, breezy and cooler conditions highlight the short term forecast. Low pressure currently over southern Saskatchewan will track southeast across southern Manitoba tonight, dragging a cold front through western and central ND. Expect less clouds and no precipitation central and south tonight, but there may be a temporary spike in winds across the forecast area behind the cold front, as it sweeps southeast across the state. Winds will remain breezy along and east of the Highway 83 corridor through the day.
1101 AM PDT Wed Aug 28 2019 Summer weather will linger over the Inland Northwest for the next few days as high pressure builds into the region.
However, an upper level short wave trough is evident on water vapor imagery over southern Colorado moving to the southeast. The Sangre de Cristos remain pretty quiet this afternoon despite the presence of the upper trough, likely due to a westerly surface flow. However, models suggest that there is the potential for some precipitation to form across the Texas Panhandle and as far south as this forecast area later tonight into early Thursday as the trough propagates to the southeast, and possibly even a bit more to the south as the upper ridge over the desert southwest begins to build northward.
149 PM CDT Wed Aug 28 2019 148 PM CDT High pressure over southern Missouri this afternoon will move southeast tonight bringing a ridge axis across the local area. The passage of the ridge will allow for gusty afternoon winds to ease up by sunset this evening then diminish into the overnight hours. Overnight lows will be cool once again as weak winds and a dry airmass allow readings to fall into the low to mid 50s, with upper 50s to around 60 in the immediate Chicago metro area.
The current weather pattern across the CONUS is characterized by a mid/upper level high centered over the Desert Southwest and troughing across the Great Lakes southward into the Ohio Valley. Showers and thunderstorms have developed along this boundary, as well as along the periphery of the upper level high across the Coastal Plains. By tomorrow, the surface stationary boundary morphs into a pseudo warm front and pushes off to the northeast. High temperatures may be a degree or two warmer, with only slight chances for showers and thunderstorms in the afternoon, primarily along and northeast of a Fredericksburg to Cuero line.
High pressure will build in from the Central Plains tonight into Thursday.
916 AM PDT Wed Aug 28 2019 Very warm summer weather is forecast this week as high pressure aloft builds over the Southwest.
256 PM CDT Wed Aug 28 2019 High pressure building into the region will keep the quiet weather pattern in place over the Midwest tonight through Thursday morning. Chances for precipitation return late Thursday afternoon, and continue Thursday night with the next cold front. The short term forecast will see high pressure give way to an advancing cold front by late Thursday afternoon. Surface dewpoints during the day will climb into the upper 60s to low 70s, with the highest moisture content northwest of the Illinois River. Favorable instability and shear for severe storms should continue through much of the evening, as the cold front pushes through central IL. The low level helicity and shear look favorable for some embedded supercells along the line.
An upper ridge and low level offshore flow will give Western Washington one more rather warm day today.
217 PM MDT Wed Aug 28 2019 H5 ridge to the west gets the top flattened off during the next 12 hours, allowing a weak impulse and slightly more midlevel moisture into the region during the day Thursday.
Passing cold front now well south of the area, with dewpoints now down in the mid 60s. Otherwise, building sfc ridging influences along with NWLY dry flow aloft will provide VFR/SKC conditions thru 29/12Z.
High temperatures will be similar to perhaps a few degrees warmer on Thursday. South to southwest flow will become more pronounced in the low levels as well which will return more moist air into the area through the day. A cold front will move south and become situated from northern Kansas, eastward into northern Missouri.
151 PM MDT Wed Aug 28 2019 A dry cold front will move south through the area this evening turning the winds to the northwest. As of 2 PM the cold front is along the International Border. Aside from that, dry conditions are expected through Thursday as a ridge of high pressure builds east into the region. Temperatures will be cooler behind the front Thursday with highs only reaching the 60s and 70s.
An approaching cold front will introduce another round of spotty showers and storms this afternoon.
A couple of showers continue to bubble in the higher terrain in southeast Oklahoma, but anything that develops should diminish by early evening. The lower dew points should lead to another cool night in most areas, although overall, low temperatures should be higher than last night's.
Thunderstorms firing along the trough axis from east central Arizona. Guidance for Thursday still going slow on bring this trough into our western counties.
With a warmer air mass pushing into the region we will see similar highs tomorrow as well.
Some cumulus has developed in response to surface heating, but a strong cap in the low levels will limit its vertical growth. Tonight, clouds will gradually clear out after sunset, and high pressure currently in Missouri will slide toward central Kentucky. Tomorrow, high pressure will begin moving toward the Appalachian Mountains, and flow will become southerly over central Kentucky and southern Indiana. Temperatures may be a few degrees warmer tomorrow compared to today; otherwise, expect dry sunny weather and comfortable dewpoints again. The synoptic overview for Thursday evening will see a deep low over Hudson Bay with a longwave trough axis positioned over the eastern CONUS and an upper level high over the SW US.
1127 AM MDT Wed Aug 28 2019 Current upper level analysis shows a deep upper trough centered over Ontario. Northwest flow persists over the northern Plains with high pressure/ridging over the west coast. Under clear skies, temperatures will drop into the 40s across most places with some of the higher elevations in the Black Hills near freezing.
839 PM EDT Wed Aug 28 2019 A cold front will push east of the forecast area this evening.
745 PM EDT Wed Aug 28 2019 A cold front will stall near the coast Thursday.
3 PM observations have remained a touch cooler this afternoon thanks the cloud cover overhead, with temperatures in the upper 80s to mid 90s across most of SE TX.
210 PM PDT Wed Aug 28 2019 High temperatures will remain slightly above normal through the Labor Day weekend as high pressure continues to dominate the region with dry conditions.
518 PM EDT Wed Aug 28 2019 A cold front and its associated band of rain showers will push east across the Susquehanna Valley late today and exit off the Mid Atlantic Coast tonight.
/issued 343 PM CDT Wed Aug 28 2019/ Wx map shows diffuse cool front/trough boundary over NE TX/N LA. Radar showing scattered thunderstorms developed over C and SC LA where the high temperatures reached the lower to mid 90s this afternoon.
A weak upper ridge will maintain the dry conditions for most of southwest Idaho and southeast Oregon tonight. A weakening upper trough just south of the ridge was supporting showers and isolated thunderstorms in Nevada and far south- central Oregon just west of Harney County. The upper trough will be accompanied by isolated showers and possibly a thunderstorm in southeast Oregon overnight, with sprinkles possible in southwest Idaho.
The chance of convection will return to northeast MO and west central IL late Thursday afternoon as a cold front approaches.
Since the moisture is returning to the area, the low temperatures tonight will be mostly in the mid 60s. A cold front will move into the area. Ahead of the cold front expect highs to reach into the upper 80s to lower 90s.
739 PM EDT Wed Aug 28 2019 High pressure and dry air spreads eastward across the region tonight and for the remainder of the week. Really mainly a quick shot of drier air and cooler, with sunshine anticipated for Thursday. Models are in decent agreement of several days of dry conditions for the area this weekend due to ridging/high pressure briefly building in overhead. As the ridge begins to slowly drift east, we turn to a more southerly flow, introducing an isolated chance of showers, mainly for the Blue Ridge and Piedmont.
610 PM CDT Wed Aug 28 2019 Western and central ND remains in the pre-frontal warm sector as of 23 UTC, with the surface cold frontal zone near a Brandon, MB, to Estevan, SK, line at this hour. Thus, we gradually weighted the wind forecast back toward the lower- speed multi-model consensus after 06 UTC. Small precipitation chances, breezy and cooler conditions highlight the short term forecast. Low pressure currently over southern Saskatchewan will track southeast across southern Manitoba tonight, dragging a cold front through western and central ND. Expect less clouds and no precipitation central and south tonight, but there may be a temporary spike in winds across the forecast area behind the cold front, as it sweeps southeast across the state. Winds will remain breezy along and east of the Highway 83 corridor through the day.
Otherwise, VFR conditions anticipated throught the forecast period with a dry airmass and surface ridging over the Tennessee valley. Surface ridging will keep winds generally light and less than 10kts through the forecast period.
/issued 226 PM CDT Wed Aug 28 2019/ An upper ridge is centered over the southwest part of the country and an upper trough is over the Great Lakes area and the northeast part of the country. Temperatures today across West Texas and southeast New Mexico are cooler courtesy of the front and cloud cover across the area.
811 PM EDT Wed Aug 28 2019 Latest RAP model has broad mid level ridging across the Gulf of Mexico. On Thu the inverted trough will bring higher moisture to about the southern half of the state and provide the best rain chances there.
621 PM EDT Wed Aug 28 2019 A cold front will pass through the forecast area tonight and stall near the coast Thursday.
548 PM MDT Wed Aug 28 2019 H5 ridge to the west gets the top flattened off during the next 12 hours, allowing a weak impulse and slightly more midlevel moisture into the region during the day Thursday.
703 PM CDT Wed Aug 28 2019 Winds will continue to diminish this evening as the deep upper trof over northern Ontario finally begins to lose it's grip on the Northland. Weak high pressure ridging will build in overnight, but that will be short-lived as another fast-moving short wave trof and associated cold front will arrive in northwest Minnesota very late tonight. High pressure then builds in with significant height rises Thursday night, with drier air somewhat breezy northwest winds at least for a few hours in the evening. Cool high pressure remains over the Upper Midwest and Great Lakes region into this weekend before weakening and shifting eastward.
Surface ridging will continue to build into the southern Appalachians with a very dry airmass. Chattanooga Airport, TN 61 87 61 91 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 60 85 60 89 / 0 0 0 0 Oak Ridge, TN 58 85 59 89 / 0 0 0 0 Tri Cities Airport, TN 54 81 54 86 / 0 0 0 0.
713 PM EDT Wed Aug 28 2019 A cold front will push east of the forecast area this evening.
515 PM MDT Wed Aug 28 2019 Upper ridging covers the western CONUS, keeping the northern plains in northwest flow. Surface map shows low pressure over Saskatchewan, with a warm front extending through the CWA, and a cold front approaching from the northwest. Behind the warm front, winds are southwesterly and light, and temperatures are rising into the 70s and 80s. The cold front will begin pushing into the region tonight, having little effect on the weather besides a wind shift and some cooler temps for Thursday.
/issued 249 PM CDT Wed Aug 28 2019/ Models show the overall pattern for several more days will continue to be with the upper ridge over portions of the western U.
412 PM CDT Wed Aug 28 2019 Winds will continue to diminish this evening as the deep upper trof over northern Ontario finally begins to lose it's grip on the Northland. Weak high pressure ridging will build in overnight, but that will be short-lived as another fast-moving short wave trof and associated cold front will arrive in northwest Minnesota very late tonight. High pressure then builds in with significant height rises Thursday night, with drier air somewhat breezy northwest winds at least for a few hours in the evening. Cool high pressure remains over the Upper Midwest and Great Lakes region into this weekend before weakening and shifting eastward.
A weak mid level short wave trough will be moving toward this area this afternoon. The upper level ridge will slowly drift to the west during the period.
Temperatures will be cooler. From Friday on through the weekend, the Medford CWA will be in between a strong upper ridge to the east and low pressure to the west.