Aikyam-Lab/Synoptic-Bench huggingface dataset:
632 PM CDT Thu Oct 27 2016 Early-afternoon water vapor imagery revealed a mid-level ridge edging east from the Rockies into adjacent High Plains, downstream from a trough approaching the Pacific Coast. In the low levels, a lee trough was deepening over the High Plains as of 18z with a diffuse warm front that stretched from central South Dakota into eastern parts of Nebraska and Kansas. The warm front will gradually shift east/northeast tonight in concert with a migratory cyclone tracking across North Dakota. Friday, the mid-level ridge over the north-central U. This disturbance will be associated with a surface cold front which will advance southeast into the mid Missouri Valley. Currently, we are forecasting highs in the lower 80s which will be close to the record values of 84, 84, and 85 at Omaha, Lincoln, and Norfolk, respectively.
624 PM CDT Thu Oct 27 2016 The weather remains pretty quiet with an unseasonally warm airmass in place across the Central Plains under the influence of an upper ridge of high pressure. At the surface, a high pressure ridge will exit east of the Missouri River tonight while a low pressure trough deepens along the high plains. Very warm temperatures in the low/mid 80s are forecast for our western zones which are a solid 20 to 25 degrees above normal highs which are around 60 degrees this time of year.
WV imagery indicates a broad upper level ridge of high pressure moving eastward across the Western High Plains. Near the surface, a lee side trough of low pressure is anchored across eastern Colorado. We also bumped up the highs about 2-3 degrees over SuperBlend, which would give widespread highs in the upper 80s.
1018 PM EDT Thu Oct 27 2016 Low pressure will move east of the area overnighit.
We also bumped up the highs about 2-3 degrees over SuperBlend, which would give widespread highs in the upper 80s.
1010 PM EDT Thu Oct 27 2016 A cold front will cross the local area later tonight.
/EC/ Tonight through Friday, WV imagery this afternoon continues to show mid level wave moving out of the forecast area and being replaced by ridging aloft. This ridging will provide warming/drying in the column with the only appreciable moisture left in the boundary layer and best over southern portions.
High pressure ridge will move further Northeast and weaken Tonight.
1153 PM CDT Thu Oct 27 2016 Latest water vapor satellite imagery shows upper level ridge over eastern Rockies and southern Canadian Prairies and upper level trough over the eastern Great Lakes region. Upper level trough is wrapping low stratus deck of clouds and sprinkles/drizzle across much of the forecast area per latest visible satellite imagery and mosaic radar. Upper level ridge will build into the Upper Midwest tonight into Friday.
Tight 6+ mb gradient continues over the area between Western Atlantic into the Deep South high pressure axis and tropical wave in the NW Caribbean Sea. Pleasant dry weather will continue across the forecast area tonight and Friday as high pressure remains in control. Temperatures tonight and Friday will run some 5 degrees above normal for this time of the year with lows tonight falling into the lower 60s across the Nature Coast, and mid to upper 60s central and south, with highs on Friday climbing into the lower to mid 80s. Atlantic 500 mb ridge extending into Gulf to be replaced by an even stronger ridge developing across northern Mexico and the far southern U.
Much cooler this morning compared to 24 hours ago with temps currently in the 40s. Even with the sunny skies this afternoon, temps will be below normal and be in the low to mid 50s. The trough mentioned above will keep winds up a little bit tonight and should prevent temps from really bottoming out. Most areas will remain above freezing, except for our TN counties where a few places may drop into the upper 20s. The trough finally shifts east Friday evening and high pressure settles in over a large portion of the eastern US.
High pressure is centered over central Oklahoma. The high will shift slowly east today and should be over southwest Arkansas tonight. A weak cold front will move into the region from the north tonight. Temperatures will be on the chilly side with lows Friday morning in the low to mid 30s. The cold front will move south of the region Friday morning leaving dry weather over the forecast area. The air behind the cold front will be a little cooler so temperatures will be a few degrees lower than today with highs in the upper 40s to mid 50s. High pressure will be over the Ohio Valley by Friday night.
This wave will also send a reinforcing cold front into the area beginning this afternoon, and then exiting the CWA by early this evening. While the low levels are going to be quite dry and the mixed layer will be rather deep, there is more than sufficient moisture and lift to warrant some low pops. Given the increase in clouds I have also trimmed back the high temps a bit and am still warmer than the ensemble of temp guidance. During the late evening and overnight hours, high pressure settles into the area in the wake of the front and will be centered through the MS Valley at daybreak Friday.
846 AM CST Thu Mar 2 2017 Dry and tranquil weather conditions prevail across the cntrl TN Valley area this Thu morning, as temps continue to gradually warm into mainly the lower/mid 40s for many locations. The trough mentioned above will keep winds up a little bit tonight and should prevent temps from really bottoming out. Most areas will remain above freezing, except for our TN counties where a few places may drop into the upper 20s. The trough finally shifts east Friday evening and high pressure settles in over a large portion of the eastern US.
404 AM CST Thu Mar 2 2017 Low sensible weather concerns the next 24 hours with weather highlights in the short term period including: increased northwest winds mid morning to mid afternoon today, highs similar to slightly cooler compared to yesterday, and near normal lows tonight. Broad cyclonic flow is evident in the latest water vapor imagery over the central and eastern US with a broad mid- level trough present over roughly the eastern half of the CONUS. Cooler low-level air aloft moves into the local forecast area this morning wherein 850 hPa temperatures range from peaking -1 to -8 C from southwest NEB to north central NEB. Main focus for this forecast period is the pattern shift as a ridge builds across the area this weekend.
Upper air analysis last evening showed a broad trough across the country with the axis around the Mississippi River. At the surface, high pressure was centered over central Oklahoma and winds across our CWA were generally from the northeast. Drier, cooler air has moved in with dew point temperatures 30 to 40 degrees lower than 24 hours ago and temperatures 10 to 20 degrees lower. The weather will be dry and temperatures will be cooler.
Coastal trough will keep a strong gradient over the region through the weekend.
Cold front will continue to push southeast across the far southern zones this afternoon. Much cooler behind the front with temps in the 50s across inland southeast Ga. Temps remaining in the lower/mid 60s across the northern areas of northeast Fl with lower/mid 70s across the far south before frontal passage this afternoon. Cold front pushing southeast across the waters with a surge of Northwest to North winds.
Low-level thickness progs and 850mb temps near -6C suggest today's highs will run on the low end of guidance and a few degrees below climo. Reinforcing Canadian high pressure builds in on Friday, and temps will really struggle under the thermal trof.
High pressure will build southward across the Upper Midwest tonight and Friday.
Cooler air will be filtering into the area during the weekend, lowering snow level to 1500 to 2000 feet.
Temps were mainly in the 20s across the plains with single digits and teens across the higher elevations.
No change to the current forecast was needed as a cooler and much drier airmass was over our CWA. The pressure gradient around this high was resulting in a gusty northeast wind across the southern half of our CWA. With the northeastern two thirds dropping into the low to mid 30s, areas of frost should develop after midnight and linger until mid morning Friday.
Cold high pressure will be building into the region today, with a reinforcing push of cold air advection later this morning.
Cool temperatures and clear skies are occurring this morning across the area, as high pressure builds south across the Central Plains. Moderate west winds will occur during the first half of the day today, ahead of a dry, secondary cold front approaching from the northwest. Behind the front, high pressure will move southeast through the lower Missouri Valley tonight, with north winds becoming light by daybreak Friday. As high pressure pushes east of the area on Friday, winds will become easterly and then southerly by the afternoon hours.
The leading edge of the cold front has passed a line from Jacksonville to Cross City and continues toward the southeast. Mostly MVFR/VFR ceilings expected with the cold front, generally in the 1500 to 5000 foot range. Winds will shift northerly and become gusty behind the cold front this afternoon.
Otherwise, a mostly quiet forecast period, though some moisture riding along the ridge may result in a few mountain showers, especially Friday afternoon.
557 AM CST Thu Mar 2 2017 Low sensible weather concerns the next 24 hours with weather highlights in the short term period including: increased northwest winds mid morning to mid afternoon today, highs similar to slightly cooler compared to yesterday, and near normal lows tonight. Broad cyclonic flow is evident in the latest water vapor imagery over the central and eastern US with a broad mid- level trough present over roughly the eastern half of the CONUS. Cooler low-level air aloft moves into the local forecast area this morning wherein 850 hPa temperatures range from -1 to -8 C from southwest NEB to north central NEB. Main focus for this forecast period is the pattern shift as a ridge builds across the area this weekend.
648 AM EST Thu Mar 2 2017 The region will remain under cyclonic flow from departing low pressure today with gusty winds of 40 to 50 mph and scattered snow showers or flurries, mainly this morning.
719 AM EST Thu Mar 2 2017 Winds increase out of the west behind a cold front today, ushering in colder air.
An increasingly dry and warmer westerly flow aloft will set up for the latter half of the week. Precipitation could return to region late in the weekend with the arrival of a cold front.
606 AM EST Thu Mar 2 2017 Low pressure will move into the Maritimes on Today. High pressure will build toward the area late in the weekend. Intense low pressure will move across northern Maine this morning then move into the maritimes later today and this evening. Colder air will move in from the northwest behind the low later today. A strong pressure gradient will develop today between the departing low and strong high pressure further to the west. Winds will slowly diminish late today and tonight as the low moves away from the region. Expect s/wv ridging late Thur night to be brief and slowly flatten out Fri mrng as H5 low drops south fm James Bay twd CWA.
Cold front will continue the trek eastward and be located roughly across Apalachee Bay northeastward across Taylor and Madison counties at dawn and will clear the eastern Big Bend counties in the mid/late morning. Highs will be markedly cooler as compared to the past few days; readings in the mid to upper 60s are expected.
Lake-induced troughing looks to start to set up as northwesterly flow becomes established later this evening. Thereafter, building high pressure is forecast to suppress precip chances and moderate temperature for the weekend. Precip chances are projected to escalate during the first half of the new week as warmth and moisture flow back over the region on the van of a high-amplitude midwestern trough/associated cold front.
1032 AM EST Thu Mar 2 2017 The gusty west wind will slowly subside today as a deep low pressure area over the Saint Lawrence Valley continues to slide into the Canadian Maritimes.
Brisk northwest winds will continue to draw in cooler air over the area. The brisk winds will die off this evening as high pressure builds east in the wake of trough. The high should be centered over the eastern cwa by 12z Friday. with single digits to the far northeast and in the lower teens in the south.
1043 AM EST Thu Mar 2 2017 Based on the 15z observations, the cold front has moved southeast of the CWA with cooler, drier air moving in behind it. Cold front will continue the trek eastward and be located roughly across Apalachee Bay northeastward across Taylor and Madison counties at dawn and will clear the eastern Big Bend counties in the mid/late morning. Highs will be markedly cooler as compared to the past few days; readings in the mid to upper 60s are expected.
High pressure remain over the region through the end of the week before a storm system approaches the region over the weekend.
Most of the scattered light rain/snow showers will stay north of central IL this afternoon associated with an upper level trof over the western Great Lakes. Broken to overcast low clouds over central/southeast IL this afternoon will also decrease from sw to ne during tonight as strong low pressure pulls away.
645 AM EST Thu Mar 2 2017 High pressure will build into the area behind the cold front promoting dry and cooler weather through the weekend. A cold front has shifted east of the forecast area this morning with rainfall pushing east of the area. Dry and cool high pressure will build into the region from the west today in the wake of the cold front. Dry High pressure will be across the region overnight and through the day Friday. Temperatures on Friday will be close to normal, with readings in the lower to middle 60s.
1022 AM EST Thu Mar 2 2017 The gusty west wind will slowly subside today as a deep low pressure area over the Saint Lawrence Valley continues to slide into the Canadian Maritimes.
558 AM EST Thu Mar 2 2017 Winds increase out of the west behind a cold front today, ushering in colder air.
Areas of fog,locally dense will impact the lower valleys of far northwest Montana through the mid morning hours. Otherwise the region will be under the influence of a weak developing ridge the next two days. A weak weather disturbance will move through the ridge and impact northwest Montana with mountain snow showers and modest accumulations impacting some travel over mountain passes. Also, warmer air will push its way into the region today and Friday. Amounts aren't expected to be excessive however the warmer temperatures will aid in some decent snow melt, especially in northwest Montana valleys which will in turn bring a potential for areas of ponding on the roads.
605 AM EST Thu Mar 2 2017 This afternoon winds will be breezy as a strong low pressure system exits the east coast.
winds will switch back to the north as a new cold front drops south into the state.
High temperatures will be a few degrees warmer today than yesterday as the surface wind gradually returns to the southwest ranging from upper 50s across the northwestern South Plains to mid 60s across the Rolling Plains. Another night of light winds, clear skies, and low dewpoints will allow for some radiational cooling and as a result, guidance has come in with cooler min temperatures for Friday morning. Did drop lows by 3-6 degrees again favoring the Caprock for cooler than guidance mins.
324 AM MST Thu Mar 2 2017 A large area of high pressure continues to affect the western third of the United States. The ridge axis is just off the west coast which has allowed broad northwesterly flow to set up over much of the Intermountain West. Outside of that area, expect a similar day to yesterday with plenty of sunshine as high temperatures reach a few degrees warmer than yesterday. On Friday, some energy will start breaking down the ridge to our north while a midlevel area of low pressure will skirt the U. Models have consistently kept this low pressure dry so do not expect any precip from this weak area of circulation.
317 AM MST Thu Mar 2 2017 An upper level ridge over the western states will produce a northwest flow over Colorado through tonight. Highs will be slightly warmer today with mid 40s to lower 50s expected. Lows tonight are expected to be slight warmer due to the warming airmass.
Dry conditions and much warmer temperatures will settle into the area through the coming weekend with high level cirrus clouds passing through the sky on and off. Dry and warm conditions will return as high pressure returns over the West Coast by midweek. Evening satellite imagery and RAOB charts indicate atmospheric drying continues regionally, while the sub- tropical and polar jet streams are moving across the south and north International Borders respectively and high pressure remains over off the West Coast. Seasonally persistent low pressure off the Baja Peninsula will begin to track eastward with the still invigorated sub-tropical jet, bringing additional cirrus through the area possibly clipping portions of Pinal and Gila counties into the day Friday. High pressure aloft will build over the eastern Pacific and SW Conus with 500mb heights remaining in the 570-576dm range for the weekend.
703 AM EST Thu Mar 2 2017 Low pressure will move into the Maritimes on Today. High pressure will build toward the area late in the weekend. Intense low pressure will move across northern Maine this morning then move into the maritimes later today and this evening. Colder air will move in from the northwest behind the low later today. A strong pressure gradient will develop today between the departing low and strong high pressure further to the west. Winds will slowly diminish late today and tonight as the low moves away from the region. Expect s/wv ridging late Thur night to be brief and slowly flatten out Fri mrng as H5 low drops south fm James Bay twd CWA.
Full sun highs will be tempered back by cold advection, and the latest guidance is a little warmer for northern sections that the current forecast. Chattanooga Airport, TN 56 35 53 30 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 53 33 47 27 / 0 0 0 0 Oak Ridge, TN 54 34 49 25 / 0 0 0 0 Tri Cities Airport, TN 51 31 43 23 / 0 10 20 0.
We will see some ridging occur over the region tonight into Friday.
1005 AM EST Thu Mar 2 2017 High pressure will build into the area behind the cold front promoting dry and cooler weather through the weekend. It will be dry behind the cold front today. The models show dry high pressure continuing to build into the forecast area from the west tonight. Some of the guidance has temperatures around freezing but this may be too cold because of mixing associated with the high building into the area. Dry High pressure will be across the region through Friday.
High pressure aloft to gradually build in from the west through Friday for continued dry and warmer weather.
Lows tonight will be around freezing, upper 20s Cumberland Plateau Region. As sfc ridging influences become more established Fri/Fri night, highs will range 5 to 10 degrees below seasonal values.
Colder on Friday with some light snow showers in the morning tapering off as sfc ridging and subsidence/drying moves in.
The cold front that brought thunderstorms to the area yesterday is now well off to our south and east. As far as sensible weather is concerned, temperatures warming into the low to mid 60s for much of Central AL today.
Quiet conditions will persist through Thursday night as short range models indicate weak upper level ridging shifting slowly eastward across the Intermountain West into the Western High Plains. With very little moisture in the lower/mid levels to speak of, precip chances will remain absent across the region during the period. Dry conditions will persist across western Kansas through the weekend as weak upper level ridging moves out of the Intermountain West into the Central Plains during the period.
/issued 424 AM CST Thu Mar 2 2017/ A chilly night underway as much cooler air is spreading into the area on gusty northerly winds. Temperatures are currently running anywhere from 10 to nearly 25 degrees cooler than this time yesterday, ranging from 48 at Jasper to 62 at Patterson. Aloft, flow is nearly zonal beneath a longwave trough crossing the eastern CONUS.
Only concern will be the low humidity for fire weather, but winds will be relatively light so not thinking it will be a problem.
Cloud cover is presently more robust east of the Seven Mile Bridge, and partly cloudy elsewhere, and temperatures along the entire stretch of the island chain are at or just above 80 degrees. On this date in 1991, the high temperature in Key West reached 85 degrees.
910 AM EST Thu Mar 2 2017 Low pressure over southern Quebec will continue moving east today while high pressure drops south into the Dakotas from central canada. Friday high pressure will build in from the west. High pressure will be building in so the airmass will be drying through the afternoon.
625 AM EST Thu Mar 2 2017 A cold front will move offshore this morning.
/issued 303 AM CST Thu Mar 2 2017/ An upper level trough is centered over the Great Lakes area with westerly flow over the CWA. An upper trough will develop just south of California and the previously mentioned upper trough will be over the New England states on Friday.
420 AM MST Thu Mar 2 2017 08z surface analysis had low over central SD with a weak frontal boundary from eastern MT through the low into eastern NE. High pressure pushes into the CWA the rest of the day bringing seasonal temperatures. Upper ridge will build over the Rockies and push east. Lee trough from central MT into WY will morph into a warm front, moving through the CWA Friday night. Temperatures will be noticeably warmer.
With the northeastern two thirds dropping into the low to mid 30s, areas of frost should develop after midnight and linger until mid morning Friday.
945 AM EST Thu Mar 2 2017 The region will remain under cyclonic flow from departing low pressure today with gusty winds of 40 to 50 mph and scattered snow showers or flurries, mainly this morning.
One more dry day across our area today, then a much cooler and wetter pattern will return Friday into the weekend. The weak ridge that has been over us for the last couple of days is now weakening and moving east as a frontal system approaches from the west.
Subjective 00Z upper-air analysis indicates an upper-level trough over the Great Lakes, an upper-level ridge over the western US, and northwesterly flow across the central US. Moisture had been shunted well south to the Gulf Coast, with warmer 10C+ 850mb temperatures from TX to AZ.
555 AM CST Thu Mar 2 2017 For the ArkLaTex, VFR expected as high pressure continues to drive a dry N/NE wind into the area. Will deviate from model blend suggestion of mostly sunny skies today and will maintain partly cloudy with some clearing overnight as upper ridge becomes better established. Ridge to hold through Friday evening providing mostly clear skies.
A weakening cold front will continue to move southward across the region today, ushering in cooler Canadian high pressure.
No significant temperature change is expected once the aforementioned frontal boundary pushes through the area tonight, with high temperatures tomorrow likely to be a few degrees warmer than today.
Cold advection under the Eastern CONUS trough will hold temperature about 5 degrees under the averages today. Nevertheless, model world has retreated from the organized nature of the event as well as available mid level moisture, although some accumulation is likely, most especially over the ridges, given progs of a deep mixing layer under the mid level cold pool. Thereafter, building high pressure is forecast to suppress precip chances and moderate temperature for the weekend. Precip chances are projected to escalate during the first half of the new week as warmth and moisture flow back over the region on the van of a high-amplitude midwestern trough/associated cold front.