Aikyam-Lab/Synoptic-Bench huggingface dataset:
157 AM MST Sun Nov 6 2016 08z surface analysis had high pressure over the Midwest with lee trough from central MT into eastern CO. Southerly flow east of the trough is bringing a slug of boundary layer moisture north from central KS/NE early this morning. Upper trough depicted on water vapour over WA/OR will zip across the northern Rockies into the northern Plains through Monday, pushing upper ridge east. Weakening upper trough over WY/CO will link up to northern stream feature. Cold front will then sweep through CWA tonight with cooler temperatures for Monday, but readings will still be 10F above normal. Western upper ridge rebuilds over the Northern Plains by mid week, with dry conditions and very mild temperatures continuing.
This includes some potential for patchy fog again tonight with high pressure centered nearby to the southeast. Dew points are 3 to 5 degrees higher than 24 hours ago, although temperatures are similarly warmer. So once again Rockford and other northern locations should actually see the highest maximum temperatures around 70. MTF 246 PM CDT Amplified upper ridge which has produced our ongoing stretch of unseasonably mild and dry conditions will continue on Monday with mostly sunny skies and temperatures once again into the mid 60s in the forecast.
230 AM CST Sun Nov 6 2016 Little change to general forecast trends during the period with timing and potential phasing of northern and southern stream troughs the primary concern as they move across the region. A southern stream trough was located over the southern Rockies this morning with models similar in tracking the system into the southern plains by Monday morning then stalling out during the day Monday. Northern trough meanwhile tracks across southern Canada and the northern plains tonight.
/Issued 926 PM EDT Sat Nov 5 2016/ High pressure will continue through the period. /Issued 240 PM EDT Sat Nov 5 2016/ Models continue to show dry conditions through the short term and beyond as the area remains under high pressure influence. thin high clouds will try to spill over the upper ridge anchored over the deep south as a large low pressure system deepens over the southwest. mainly in the low to mid 40s. then maybe a couple degrees warmer Sunday night as the air mass modifies. Highs on Sunday will warm into the lower to mid 70s for most areas under ample sunshine.
359 AM CST Sun Nov 6 2016 Upper trough currently over Colorado will continue to move east and open up today but not before bringing us additional rain chances. The trailing edge of the upper level trough will pass overhead this afternoon and evening providing continued lift but weaker than seen early this morning. After the upper level trough axis passes, subsidence will spread overhead from west to east, especially after midnight. Some energy in it's southern flank does in fact spit and shear southeast helping to weakly reorganize the upper trough in our vicinity by late Monday. Aforementioned well- established drying by virtue of being on the back side of the trough passing tonight will continue into Monday.
1150 PM CDT Sat Nov 5 2016 For the 06/06Z TAFs, VFR conditions will prevail this period with mainly mid and high clouds continuing to spread over the area well out ahead of an upper low entering the Rockies.
Large-scale forcing for ascent attendant to the weakening mid- level trough will spread east into the mid Missouri Valley late Sunday night into Monday, contributing to an increased chance of rain showers ahead of a cold front which will move into the area from the west. The cold front will progress through the forecast area Monday night with precipitation chances diminishing from northwest to southeast.
High pressure will bring warm and dry conditions along with light winds to the region through the week.
With the main lifting feature being the upper trough, the hi-res is depicting a very broken line of storms as it pushes into the CWA.
SHORT TERM (Today through Monday): Persistent mid-level troughiness is expected over the BRO CWFA throughout the short term forecast period as closed 500 mb low pressure over the Four Corners area opens up and gradually migrates east into the Central Plains.
1122 PM CDT Sat Nov 5 2016 High pressure just off to our east this evening will continue to drift slowly away from central Illinois over the next 24 hours. Based on the current temperature trends this evening and the expectation of the high level cloud cover to thin out late tonight, have lowered overnight lows a couple of degrees over most of the area. Still may be a few upper 30s tonight in that area given the proximity of the ridge axis, but most locations should bottom out in the low 40s. High pressure will remain centered over the eastern Ohio River valley to northeastern U. Lows Sunday night should be in the low to mid 40s and highs Monday in the mid to upper 60s.
High pressure will keep it dry and mild conditions through next Monday.
The SE CONUS remains under the influence of Sfc and mid-level ridging. For the remainder of tonight, the high level clouds will act to limit the degree of radiational cooling across the CWA. Mins in the west look to stay in the lower 50s, while mid 40s look attainable in the far east.
Dewpoints have recovered into the lower and middle 40s in most locations, which will make it more difficult for temperatures to drop to and below 40. High pressure at the surface and aloft will move only slowly east from the MS River Valley to the East Coast during the short term period.
Mid/upper level ridging will gradually shift east tonight allowing for a southwest flow aloft to take control through Sunday. For tonight into Sunday afternoon, moisture advection increases through the column as precipitable water values associated with the four corners upper low begins to advect into ND. The highest instability remains focused in the James River Valley. This cold front will slide through central ND Sunday night with cold air advection increasing from northwest to southeast.
The upper level in the atmosphere today starts out with an upper level ridge over the Mid-South. The ridge will slowly drift to the east.
Tonight Through Sunday High pressure aloft will dominate the weather tonight and Sunday.
The mid and upper ridge over Wisconsin will move to the Eastern Great Lakes, with a weak southwest flow tonight. High High pressure centered to the east of the state will bring continued pleasant weather Monday.
An upper level low pressure system remained over the Four Corners region this evening. tonight should aid in low temperatures being slightly cooler compared to last night. A few of the low valley locations in Northwest Arkansas could possibly see temps get down into the upper 30s by early Sunday morning.
240 AM CST Sun Nov 6 2016 Scattered cirrus continues overhead downstream of the slow-moving upper trough, with mid cloud becoming more prevalent over central portions of the state. Upper trough continues to make slow eastward progress into the High Plains overnight, with deeper moisture slowly coming east into eastern Kansas. Again went on the higher end of most guidance based on recent performance. Precipitation chances look rather low through the day, with the increasing moisture and finally some aid from the upper trough bringing better chances overnight. Timing of the thicker cloud and stronger winds should again keep western areas warmer than the east, but higher amounts of both should keep the lowest values in the mid 40s.
Valley inversions will re- strengthen as a dominate ridge builds overhead this week.
This morning's satellite imagery reveals the low that brought showers to portions of northern Arizona has drifted into Colorado. This is primarily due to a strong ridge forecast to build across the western United States. With that said, model forecasts continue to show a trough undercutting the ridge, eventually becoming a broad cutoff low centered over northern Mexico. Flow between the ridge and trough will cause a persistent dry northeast to easterly wind.
An large upper cyclone off the Atlantic coast will feed dry air down the Eastern Seaboard and into the Southeast States through Monday. At the same time an upper trof will dig into Texas and pull Gulf moisture northward into areas west of the Mississippi River.
A cold front continues to slowly move into the area, currently bringing rain to the east slopes of the Washington Cascades and portions of North Central Washington. Additionally, not much wind associated with this feature, but locally breezy westerly winds can be expected on the ridges. High pressure over the area will give way to a cold front that will move very slowly across the forecast area overnight and then exit into Idaho on Sunday.
The Winter Weather Advisory will continue until 06z this evening as the main not-so-cold pocket of the trough travels over the San Juan mountains. The main trough aloft also travels over the San Juans and western CO this evening. Also increased areal coverage over the central mountains and central valleys late this afternoon and early evening as the main area of uplift north of the low center rotates overhead. By Sunday morning the main trough will be east of the area with orographic showers shifting to NW facing slopes. These should decrease throughout the day as the trough moves off to the NW.
321 AM CST Sun Nov 6 2016 Upper low to our west has begun its slow trek eastward this morning. Rain chances will increase from west to east through the day today into tonight and Monday as upper trough slides east.
111 AM EDT Sun Nov 6 2016 High pressure over the Ohio Valley will move to New England through Monday.
1132 PM CDT Sat Nov 5 2016 Water vapor imagery shows an upper low spinning over the four corners region with surface lee troughing continuing to strengthen over western KS/eastern CO. With large scale ridging remaining over the Rockies/Plains, confidence is high that near or slightly above normal temps will remain for the Wed through Sat time frame. A low pressure center on the lee side of the rockies will begin its eastward march.
Models remain fairly consistent with the previous runs and are in good agreement with each other this morning with an upper level trough exiting the Rockies and moving out into the Central High Plains today as the atmosphere ahead of this upper wave saturates. The better opportunity for widespread precipitation will occur Sunday night into early Monday given the forecast instability and lift accompanying the upper level trough as it crosses western Kansas. As the upper level trough moves into the Mississippi Valley Monday night the GFS and ECMWF both continue to support ridging aloft starting to move out into the northern plains as an upper level low develops and moves southwest across the southern Plains.
/issued 248 PM CDT Sat Nov 5 2016/ (Tonight and Sunday) An upper trough associated with an upper low now over the Four Corners Area will continue to move eastward with the upper trough axis over the Texas/NM border by tomorrow afternoon. Abundant moisture ahead of the upper trough will fuel convective activity that is expected to move into the western and central sections of the forecast area by sunrise tomorrow.
101 AM EST Sun Nov 6 2016 A pesky upper trough over the Northeast and Canadian maritimes this morning will continue to provide the North Country with cloudy skies and areas of drizzle through mid-day before high pressure building over the Great Lakes and Ohio Valley begins to shift east allowing some sunshine to develop this afternoon.
/Tonight through Sunday/ Although upper level ridging will move to our east by tomorrow, the sensible weather will change little through the weekend. Temperatures will still remain warm, but a bit cooler than today, as low level winds turn just southeasterly by 18-00z Sunday.
325 AM EST Sun Nov 6 2016 High pressure will persist across the region through much of the week.
A low pressure system that has been spinning across the desert southwest for a few days is starting to lift into Colorado. Southerly winds ahead of the low will first see an increase of high clouds this evening. As the low lifts northeast and opens up towards morning into the day on Sunday, will see the chance for showers develop. With the clouds and showers expected Sunday temps to be cooler than today, yet still very warm for early November.
Middle Tennessee is under the influence of high pressure both at the surface and aloft.
1103 PM MDT Sat Nov 5 2016 Water vapor shows upper ridge over the nrn plains with cut off low over the four corners. broad trof covers the nrn Rockies/nrn plains. An upper trof will track along the US/Cndn border late Sunday and push a cool front into the cwfa. This upper trof will also pick up the cut off low currently over the four corners and eject it through the cntrl plains Sunday night. Following the cold front Sunday night, northwest winds will be breezy across the SD plains on Monday. Temperatures will also be cooler, with highs in the mid 50s to mid 60s.
357 AM EST Sun Nov 6 2016 High pressure over Ohio this morning will move slowly east and continue to provide fair weather with above normal temperatures across our area for the next couple of days.
257 AM CST Sun Nov 6 2016 Early this morning, high pressure remained over the eastern United States. This high pressure is not expected to move much in the next 24 hours, Aloft, H5 ridge axis was moving over the CWA this morning. Later this morning, the ridge axis will be east of the area, leading to SW flow aloft.
223 AM MST Sun Nov 6 2016 A weakening upper level low over northwest Colorado will continue to lift northeast today. Due to more cloud cover today, expect slightly cooler temperatures over the eastern plains. As the upper level low continues to lift northeast, moisture is expected to slowly decrease through the afternoon and evening. A strong upper level ridge/trough blocking pattern across the continental US will likely result in few day-to-day changes on our weather.
405 AM EST Sun Nov 6 2016 High pressure over the Ohio Valley will move to New England through Monday.
Mild temperatures will continue through the period, albeit a bit cooler on Monday behind a cold front moving across the area late Sunday. Ahead of this front, southerly llvl winds over the panhandle will advect llvl moisture here, with stratus and perhaps very isolated areas of patchy fog a possibility early Sunday morning along the Cheyenne Ridge.
301 AM EST Sun Nov 6 2016 A high amplitude mid level ridge axis will become centered over Lower Mi tonight. Thermal troughing over Lake Michigan and Huron overnight led to the development of some light onshore flow across wrn Lower Mi and the thumb region. The mid level ridge will fold over and dampen Monday into Tues with the approach of northern stream wave. This will support an increased ssw flow on Monday and will boost daytime highs well into the 60s, possibly into the low 70s in some locals.
1202 AM CDT Sun Nov 6 2016 A persistent ridge over the Central CONUS will slowly progress eastward through the latter half of the weekend. This will maintain dry conditions and warmer than normal temperatures both today and Sunday.
and approaching upper low from the desert SW. The main weather focus for tonight on into Sunday will focus on the upper low over the desert SW and its forecasted movement into the Central Plains region. to the low 50s going east. There will be a slight shift eastward of these two systems as the upper low lifts NE. Extensive cloud cover will only allow for daytime highs to top off at the lower to mid 60s. The central portion of the country will be dominated by ridging aloft. Considering the nature of the flow, the models that are more amplified and further south and west with the upper low will probably be more correct.
332 AM EST Sun Nov 6 2016 Canadian high pressure will settle into the region for much of the upcoming week.
Upper level ridging over the central Gulf Coast region will gradually shift to the east through tonight. This ridge will help provide for another fine day with temperatures again running a few degrees above normal despite some increase in high level cloudiness. Moisture will significantly increase and deepen across the region on Monday in advance of an upper trough moving into the central conus.
326 AM EST Sun Nov 6 2016 A pesky upper trough over the Northeast and Canadian maritimes this morning will continue to provide the North Country with cloudy skies and areas of drizzle through mid-day before high pressure building over the Great Lakes and Ohio Valley begins to shift east allowing some sunshine to develop this afternoon.
01 UTC surface analysis shows an area of high pressure across the SC/NC border along the Atlantic Coast. The drier airmass at the surface would favor cooler morning lows on Sunday. Deep layer ridging will continue to prevail through the short term with no rain expected. The very dry airmass currently in place will begin to moisten on Sunday with the easterly flow on the southern periphery of surface ridging.
110 AM EDT Sun Nov 6 2016 High pressure will allow for dry conditions through Monday.
1040 PM PDT Sat Nov 5 2016 Rain and breezy winds will be the weather tonight into Sunday as a cold front moves through the region.
359 AM EST Sun Nov 6 2016 High pressure will remain in control of the region through Election Day.
A broad area of high pressure over New England and southeast Canada will move on to the east with an increasing southerly flow next few days. This will allow temperatures to become much warmer.
These clouds will keep much of the area a bit cooler than yesterday, though still well above seasonal climo. The exception will be across western parts of central Kansas where more sunshine and slightly drier air will allow for warmer daytime temperatures.
Upper level ridge just east of the area will continue shifting east overnight and Sun.
255 AM EST Sun Mar 5 2017 Water vapor loop this morning reveals a broad scale trough over the Pacific Northwest Coast. with broad ridging downstream across most of the remainder of the CONUS. "Stuck" within this ridge is a weak southern stream perturbation across southern Texas. Most recent surface analysis shows low pressure off Washington/BC Coast with extensive ridge over eastern US with center located over southern Ontario.
Winds overnight should keep temps substantially warmer than last night. Strong 1044 mb high pressure over western Quebec and ridging southward into the eastern Ohio river valley that brought sunny skies to central IL today, will drift eastward across the Atlantic States on Sunday. An upper level ridge will continue to build into IL tonight and expand over the central Great Lakes, Ohio and TN river valleys on Sunday. Mild springlike highs in the lower 60s are expected over most of CWA with a few upper 50s from Bloomington and Champaign ne, with mid 60s over west central IL from Jacksonville west.
Have a small area of patchy freezing drizzle near the Upper Michigan border late tonight, changing to drizzle Sunday morning and expanding to include most of the forecast area by the end of the day. Have highs on Sunday mostly in the 40s as a warm front approaches from the southwest.
1037 PM MST Sat Mar 4 2017 Updated aviation section The ridge of high pressure responsible for the nice weather over the past few days has continued to slowly shift eastward this afternoon. Aloft, a 110kt jet streak at 300mb will pivot around the base of a trough and over the Utah/Colorado area early in the evening.
Tennessee Valley region remains on the backside of a broad ridge of high pressure this evening. As such, temperatures will remain a fair amount above last night's readings and should bottom out somewhere around 40 degrees in most areas (perhaps slightly cooler in the northeast). Dry and slightly warmer conditions are forecast to start a new week.
The high temperatures today will be slightly cooler than the previous day due to this cloud cover limiting solar insolation, although still well above normal with continued southerly surface winds. Warm conditions will continue tonight due to the low level cloud cover, slowly rising surface dew points along with southerly surface winds.
1209 AM EST Sun Mar 5 2017 High pressure will maintain dry weather until approaching low pressure results in increasing rain chances early in the week. Clear skies are expected tonight under high pressure. Increased sunshine, moderating temperatures and dry conditions expected Sunday as a rather strong upper level ridge moves through the Upper Midwest, pulling warmer air northward ahead of it.
Surface analysis this afternoon places a ridge of high pressure centered over the Carolinas. Southerly winds on the back side of high pressure has resulted in warmer temperatures across the Lower Mississippi Valley than 24 hours ago.
141 AM EST Sun Mar 5 2017 Weak upper ridge to round out weekend.
Temperatures will be warmer, with afternoon highs ranging from the upper 60s over eastern counties and lower 70s elsewhere.
932 PM MST Sat Mar 4 2017 Satellite imagery showing cold front slowly progressing southward out of Canada and into northern MT. Meanwhile moist sw flow continues from the upper level low of the pacific northwest. Freezing rain threat seems low. Weak warm front will bring scattered to numerous rain and snow showers to portions of north central Montana through 06Z with areas IFR/MVFR conditions expected in precipitation. Surface cold front will push southward from Canada overnight but is expected to stall-out along the Hi-Line through late Sunday afternoon with low clouds and precipitation bringing periods of LIFR/IFR conditions mainly to KCTB and surrounding area.
256 AM MST Sun Mar 5 2017 09z surface analysis had low over central MT with warm front into souther MN and cold front into central CA. Today, upper low moves on shore deepening upper trough as it moves over the west coast. Southwest flow aloft will dominate with thermal ridge peaking over the CWA. Westerly downslope flow combined with strong diurnal drying will bring temperatures in the lower to mid 70s across parts of the SD plains.
A cold front moving through the San Francisco Bay Area early Saturday evening will continue to spread rain south into the Monterey Bay Area by late evening. Much cooler conditions are forecast for Sunday with post-frontal showers and isolated thunderstorms.
A large upper trough off the Pac-NW coast continues to pick up Pacific moisture, ejecting it northeast into western Montana this morning. The trough also begins its move inland today, nudging a cold front closer.
Tonight through Sunday will see warm air advection and an increase in low level moisture transport ahead of low pressure pushing into the Northern Plains. Low level moisture continues to increase into the area with good Gulf of Mexico tap Sunday night as that area of low pressure and cold front push farther east into the Dakotas and Central Plains.
400 AM CST Sun Mar 5 2017 WV imagery shows the upper trough has cleared West Texas and Southeast New Mexico, as have the -SHRA that accompanied it. 00Z KMAF RAOB showed anomalously high PWATs for this time of year--245% of normal, currently maintained by a 25-35kt LLJ, but this will drop over the next 48 hours as SW flow aloft develops in response to an upper trough making landfall on the west coast. Sfc flow will begin backing to SW this afternoon in response to leeside troughing on the Front Range ahead of the upper trough.
1213 AM EST Sun Mar 5 2017 Weak upper ridge to round out weekend.
The clouds will keep the temps down some, with high temps ranging from the lower to middle 40s over east central WI, to the lower to middle 50s southwest. The warm front will gradually pass through the region tonight. Relatively mild and moist air flowing over a cooler ground or melting snow pack will lower the stratus along with chances for fog.