Aikyam-Lab/Synoptic-Bench huggingface dataset:
1046 PM MST Sun Dec 19 2021 Dry conditions continue with temperatures turning briefly cooler on Monday. Westerly flow aloft across the central Rockies and central High Plains region tonight turns slightly more northwesterly on Monday and Monday night as a trough in the southern branch of the upper flow moves out of the southern Rockies and across the southern Plains, another trough in the northern branch of the upper flow sweeps into southern Canada, and the upper ridge rebuilds over the west coast. The southwest near surface flow remains in place across the area this afternoon, but begins to transition to a westerly direction this evening, and then northwesterly after midnight as a prefrontal trough moves through ahead of a cold front that sweeps across the area early Monday morning. Temperatures will be 10-15 degrees cooler on Monday as a result.
1032 PM CST Sun Dec 19 2021 (The rest of tonight) Upper low currently situated across northwest Texas will gradually shift eastward tonight along the Red River into Monday morning. (Monday through Sunday) Could see some light precipitation spread into far southeast Oklahoma near the Red River Monday morning but temperatures are expected to quickly climb above freezing with any precip remaining in liquid form.
As it approaches, isolated to scattered showers will return to the area by Monday afternoon, with the highest coverage closer to the coast.
The snow will continue to accumulate in the higher elevations of Baker County and in central Idaho, especially in the Upper Weiser Basin and West Central Mountains (McCall) where a Winter Weather Advisory remains in effect tonight. The band of snow will shift northward Monday through Monday night as an upper ridge builds in from the south. The building ridge will be accompanied by dry conditions and near- normal temperatures.
1238 AM EST Mon Dec 20 2021 Drier air will continue to filter into the region behind a departing cold front. Cool high pressure will build into the region on Monday.
Web cameras and radar indicate some light freezing drizzle. Have addded some patchy freezing drizzle around the northern Black Hills. The northern plains is beneath zonal flow/flattened upper ridging and mostly cloudy skies. The cold front will cross our region tonight.
Increasing clouds with temperatures near seasonal normals Discussion: Low amplitude ridging aloft over our region will shift east as an upper low tracks across the western Gulf States reaching the Lower Mississippi Valley by the end of the short term period. We will see quite a bit of sunshine today, but high and eventually mid clouds will be increasing from south to north today and tonight as the upper low continues to slide east.
The northern plains is beneath zonal flow/flattened upper ridging and mostly cloudy skies. The cold front will cross our region tonight.
315 AM EST Mon Dec 20 2021 500mb analysis shows an upper low over north central TX with zonal flow across the CWA. The zonal flow will give way to SW flow aloft later today as the upper low moves eastward across the Gulf States.
High temperatures will be a little warmer than normal today, but after the cold front goes through this evening, lows tonight look a little cooler than normal.
254 AM CST Mon Dec 20 2021 Cold front currently moving through the area is providing for some uptick in north/northwest winds behind it. Through the daytime hours, 925 mb temperatures quite a bit cooler than yesterday thanks to persistent CAA and will keep most locations in the 20s for highs.
208 AM CST Mon Dec 20 2021 Quiet evening so far with most of the area already below freezing. Upper low will slide to our south tomorrow, bringing in some more moisture to the area which will allow cloud coverage to return to the area for the day. I will add, latest model runs have this low a bit further to the north than previous runs have, bringing the shower chances closer to the area.
1051 PM EST Sun Dec 19 2021 Drier air will continue to filter into the region behind a departing cold front. Cool high pressure will build into the region on Monday.
223 AM CST Mon Dec 20 2021 08Z water vapor imagery showed a split flow with the northern stream over the northern tier of the country and an upper low over TX. Surface observations showed a ridge of high pressure stretching from the TX Big Bend through the middle MS river valley. There isn't much change in the forecast with dry weather persisting and temps trending warmer for the later half of the work week.
1026 PM CST Sun Dec 19 2021 VFR and dry air will dominate in northwest flow aloft as a weak upper trough departs east of the area. /issued 518 PM CST Sun Dec 19 2021/ VFR and dry air will continue as a weak upper level trough edges slowly east of the area. Modest low level south to southwest breezes this evening will diminish as the lower atmosphere fully decouples in this hour or the next, with light southerly flow expected afterwards.
1239 AM EST Mon Dec 20 2021 A cold front pushing east of the area will usher in much cooler and drier air into Monday.
217 AM CST Mon Dec 20 2021 A large area of high pressure covered a huge chunk of the eastern CONUS, with 06z surface analysis showing it stretching all the way from Ontario Canada into southwest Texas. We are just on the western fringes of this high, and were enjoying a somewhat milder night with thanks to a southerly breeze and mid to high level clouds. [Key Messages] *Cold front moves through the area today, but no significant weather impacts are expected. [Discussion] Main concern for the short term period (though quite honestly not much of one to begin with really) is a cold front passage that will occur across the area this evening. Eventually, both of these jets will merge later in the week as ridging increases ahead of a trough entering the western CONUS.
1033 PM EST Sun Dec 19 2021 A cold front pushing east of the area will usher in much cooler and drier air into Monday.
Today through Tuesday afternoon A large closed Low Pressure system has taken up residence in the eastern Pacific. However, ridging over Nevada will keep any precipitation west of the CWA through the short term period.
Starting the day with some cirrus overhead in advance of a closed upper low that will increase the cloud cover throughout the day and bring the next chance for some scattered showers this afternoon and overnight. minimizing the interaction between it and the low moving out of TX. That being said, the upper low over TX will provide enough lift ahead of it today. Ample cloud coverage should keep the low temperatures in the upper 30s/lower 40s for overnight lows. A few lingering showers are possible in the early morning hours Tuesday as the forcing for ascent with the upper level low overhead begins to move east away from the area. The lower heights and cyclonic flow aloft will keep the day on the cooler side with clouds likely.
943 AM EST Mon Dec 20 2021 Building high pressure will support dry and seasonable conditions through the majority of the week. The last of the cloud cover has eroded/moved onto the east as high pressure builds across the region, and wind backs to the S. Mostly sunny skies are then expected through the rest of the day under the high. High pressure should maintain dry weather across the area through tonight with lows dropping into the mid 20s under clear skies and light winds.
Through the early morning hours of Mon, ongoing reduced visibilities and below freezing temps wl result in some patchy freezing fog over portions of N/Ern, Ern, Cntrl, and Srn AR.
615 AM CST Mon Dec 20 2021 Surface pressure continues to rise as high pressure builds in. Winds will diminish during the day in the west with the high pressure crossing the area but remain breezy east. Warmer temperatures expected mid-week with a cool down by the weekend. Good agreement exists in building heights mid-week with warmer than normal temperatures developing over the region.
Thermal profiles suggest primarily liquid, however sfc temps have fallen below freezing under clear skies. Expectation is that temps will rise some as clouds increase limiting freezing rain potential to a very brief window during the onset. Aside from that, will see a return to light south winds in most areas, with cloud cover holding temps below normal across southern areas, but several degrees warmer to the north with partly cloudy skies.
445 AM EST Mon Dec 20 2021 A trough axis extends from offshore of the New England states down to the northeastern corner of the Gulf of Mexico. At the low- levels is weak ridging perched above the region. The area of low pressure and frontal boundary is forecast to be near the Peninsula of Florida late tonight into Tuesday morning. Ahead of the cold front is warm, moist, and unstable air mass that will induce showers and thunderstorms this evening across the local waters and islands.
Low/mid level cloud cover associated with an upper low/trough axis traversing ewd into the srn Plains is starting to spread NE into parts of the wrn/cntrl Gulf states. With the increase in cloud cover, temps will struggle to rebound much past this lower 50s later today, as high pressure at the sfc becomes layered across the mid Atlantic states. Cloud cover will continue to spread into the cntrl TN Valley this evening, as the upper low/trough pattern translates further ewd into the lower MS Valley. Overall temps thru the middle of the week look to remain fairly seasonal, with lows in the lower/mid 30s and afternoon highs Tue/Wed in the lower/mid 50s. Canadian high pressure moving over the eastern half of the CONUS will continue dry and cool conditions across the region.
507 AM CST Mon Dec 20 2021 Cold front currently moving through the area is providing for some uptick in north/northwest winds behind it. Through the daytime hours, 925 mb temperatures quite a bit cooler than yesterday thanks to persistent CAA and will keep most locations in the 20s for highs.
316 AM CST Mon Dec 20 2021 Water vapor imagery currently shows an upper impulse tracking across central TX with upper ridging over the Great Basin. At the surface, cold front extends from central MN into northern Nebraska. Cold front over the Northern Plains will continue tracking south and will move through most of the forecast area this afternoon, flipping winds around to the north. Ahead of this feature above normal temps will overspread the region on Thu with a cold front expected to move through on Fri. Surface winds will gradually shift to the west and eventually to the NW on Mon as a dry cold front pushes southeast across the forecast area. Expect the cold front to move into central KS by around 15z/Mon, and south central KS by 20-22z/Mon.
Water vapor imagery currently shows an upper impulse tracking across central TX with upper ridging over the Great Basin. At the surface, cold front extends from central MN into northern Nebraska. Cold front over the Northern Plains will continue tracking south and will move through most of the forecast area this afternoon, flipping winds around to the north. Ahead of this feature above normal temps will overspread the region on Thu with a cold front expected to move through on Fri. A weak cold front will slice south across the region today, with breezy north winds in its wake, especially across central and northern Kansas.
Quiet evening so far with most of the area already below freezing. Upper low will slide to our south tomorrow, bringing in some more moisture to the area which will allow cloud coverage to return to the area for the day. I will add, latest model runs have this low a bit further to the north than previous runs have, bringing the shower chances closer to the area.
Warmer temperatures expected mid-week with a cool down by the weekend. Good agreement exists in building heights mid-week with warmer than normal temperatures developing over the region.
The overall weather pattern remains quiet through much of this week, as multiple High pressure systems dominate the mid-latitudes of the US. High pressure over the eastern US really maintains presence of the weather pattern across the mid-latitudes. Winds increase this morning through the day, as High pressure along the east coast competes with the split Low pressure systems in the northern ranges of Canada and off the Gulf, while also holding back another High pressure system dropping into the northern Plains. This will dip temps back into the low to mid 20s once again. Through much of this week, rounds of High pressure will provide dry conditions. Leading up to the holiday weekend, the region is looking to be under High pressure control during the second half of this week.
428 AM CST Mon Dec 20 2021 Key Message * Quiet weather continues * Record warm Christmas Eve? * Cooler for Christmas Day, but still well above normal. In the mid levels a zonal flow over the area is interrupted by a closed low over the ArkLaTex region.
Some patches of fog this morning in the valley otherwise the low clouds seem to be preventing any widespread fog from forming. Another cold day in store for the valley with highs only expected in the upper 40s but at least a little warmer than yesterday.
406 AM CST Mon Dec 20 2021 Key Message * Quiet weather continues * Record warm Christmas Eve? * Cooler for Christmas Day, but still well above normal. In the mid levels a zonal flow over the area is interrupted by a closed low over the ArkLaTex region.
A cold front has pushed south across the area, along with low clouds and fog from NE WY to the Black Hills.
653 AM EST Mon Dec 20 2021 High pressure in place over the Mid-Atlantic to start the week.
510 AM EST Mon Dec 20 2021 Building high pressure will support dry and seasonable conditions through the majority of the week. Mostly sunny skies are then expected through the day under the high. High pressure should maintain dry weather across the area through Tuesday night.
(Today and tonight) Ascent from an upper low digging across north Texas was producing an area of light steady rainfall across northcentral Texas. Models have a pretty good handle on the eastward evolution of the upper low through this morning, with its mid-level vorticity ascent and QPF setting up across far southeast Oklahoma through northeast Texas by noontime. Most of the precipitation falling across southeast Oklahoma will be in the form of a cold rain, although a few areas are currently subfreezing and could see a brief wintry mix, likely as sleet before diurnal warming begins. Could also see some light rain/freezing rain mix developing in the Arbuckles from now through sunrise as Will need to monitor this for the next couple of hours. Otherwise, we'll be starting a warming trend later today as temperatures start becoming warmer than average.
425 AM PST Mon Dec 20 2021 A cold air mass over Central California will bring freezing low temperatures to the mountains and desert areas tonight.
320 AM CST Mon Dec 20 2021 Low/mid level cloud cover associated with an upper low/trough axis traversing ewd into the srn Plains is starting to spread NE into parts of the wrn/cntrl Gulf states. With the increase in cloud cover, temps will struggle to rebound much past this lower 50s later today, as high pressure at the sfc becomes layered across the mid Atlantic states. Cloud cover will continue to spread into the cntrl TN Valley this evening, as the upper low/trough pattern translates further ewd into the lower MS Valley. Overall temps thru the middle of the week look to remain fairly seasonal, with lows in the lower/mid 30s and afternoon highs Tue/Wed in the lower/mid 50s. Canadian high pressure moving over the eastern half of the CONUS will continue dry and cool conditions across the region.
403 AM CST Mon Dec 20 2021 Starting the day with some cirrus overhead in advance of a closed upper low that will increase the cloud cover throughout the day and bring the next chance for some scattered showers this afternoon and overnight. minimizing the interaction between it and the low moving out of TX. That being said, the upper low over TX will provide enough lift ahead of it today. Ample cloud coverage should keep the low temperatures in the upper 30s/lower 40s for overnight lows. A few lingering showers are possible in the early morning hours Tuesday as the forcing for ascent with the upper level low overhead begins to move east away from the area. The lower heights and cyclonic flow aloft will keep the day on the cooler side with clouds likely.
1252 AM EDT Tue Oct 19 2021 High pressure and cooler weather triumphs through Wednesday.
Weak ridging aloft continues progressing east over the area through Tuesday. At the surface, high pressure continues progressing east parking itself over the Carolinas by Tuesday morning. This high pressure meanders around over the Carolinas through Tuesday with surface ridging nosing into our region from the northeast. This surface ridging gradually erodes from over our area allowing for return flow to begin developing going into Tuesday night helping bring moisture back into the region. For temps, lows tonight and Tuesday night begin trending warmer as we transition to easterly and eventually southeasterly flow (and moisture begins to increase). Some spots over far interior southeast Mississippi and southwest Alabama could possibly see cooler lows, closer to the mid 40s.
410 AM EDT Tue Oct 19 2021 Sprawling high pressure over the southeast CONUS and ridging aloft over the region will bring dry, quiet conditions in the short term period. A few high clouds may spill over the crest of the ridge at times, but will not be significant. Near neutral temperature advection will allow sunshine to bring slightly warmer temperatures each day.
/Today through Wednesday/ This Tuesday morning will find the Four State Region still experiencing the effects of the upper level ridge whose axis now extends from the Great Lakes down the Mississippi Valley. As said ridge gradually shifts to the east, southerly flow at the surface will become more pronounced, keeping the afternoon heat in play, and reintroducing moisture to the forecast for Wednesday.
311 AM EDT Tue Oct 19 2021 High pressure will become centered just to the south later today and tonight, then slide offshore mid to late week.
These winds will usher in warmer and more humid air which will lead to more muggy conditions through Tuesday night (hate to be the bearer of bad news). Expect temperatures tonight to be warmer than what has been observed the last couple of nights, with lows in the upper 60s along the coast and upper 50s to mid 60s inland.
340 AM EDT Tue Oct 19 2021 Sprawling high pressure over the southeast CONUS and ridging aloft over the region will bring dry, quiet conditions in the short term period. A few high clouds may spill over the crest of the ridge at times, but will not be significant. Near neutral temperature advection will allow sunshine to bring slightly warmer temperatures each day.
Adjusted temperatures slightly to account for latest temp and dewpoint trends, and have lows dropping to the low to mid 40s tonight. Overnight lows Tue will also trend higher, with morning temps Wed predom in the lower 50s/near 50F. The latter half of the global model suites still point to an upper low/trough axis lifting ENE thru the mid/nrn Plains into the Great Lakes Wed into Thu. This low should help push a cold front thru the mid TN Valley Thu, with sct showers and perhaps a few tstms developing along/ahead of the oncoming front starting Thu morning. Another strong dome of high pressure out of the Plains states will then usher drier/seasonal wx conditions into the area heading into the weekend period.
By Tuesday morning, a cold front will lead to a wind shift, from southerly to northeasterly, and bring in mid to low cloud cover. A nearly stacked low pressure system will track east along/near the South Dakota/Nebraska border Tuesday evening through Wednesday morning, likely bringing rain from west to east across the area. When the period opens, a low pressure system is pulling away from the region.
106 AM EDT Tue Oct 19 2021 Dry weather will persist through Wednesday as high pressure moves slowly across the eastern United States.
Highs will be in the mid 80s immediately behind the dry line where the greatest down slope will occur, with slightly cooler readings on the higher terrain farther west and to the east of the dry line where dewpoints will be higher. The associated cold front will pass across western Kansas this evening and overnight. Cooler weather can be expected Wednesday in the wake of the front with highs in the 60s to perhaps lower 70s at Medicine Lodge.
Typically cold river valleys over the east saw lows in the low 30s the last couple of days. Highs will be in the low to mid 70s. A cold front will move through the area late Tuesday night into Wednesday. Wednesday will see highs in the mid 70s, followed by cooler conditions behind the front.
A cold front moving through the area has resulted in cooler temperatures and locally breezy conditions. High pressure will build back into the region during the latter half of the week allowing temperatures to rebound back near the seasonal normal. Otherwise, a low level cold front has nearly stalled through central Arizona entraining just enough moisture at the top of the boundary layer to produce fair weather cumulus. Low amplitude ridging will return to the SW Conus during the middle and end of the week with excellent model agreement of H5 heights hovering in a 585-588dm range.
An area of high pressure centered over the southeastern portion of the country will continue to dominate the weather pattern across South Florida for today and into Wednesday. As this area of high pressure continues to slowly move eastward, the pressure gradient across South Florida will remain tight through the middle of the week as what is left of a frontal boundary remains stalled out over the Florida Straits. High temperatures through the middle of the week will generally range from the lower to mid 80s across the east coast to around 90 over the western interior.
Closed upper low will move east and north from the Great Basin today into the central Plains states tonight and Wednesday. A cold front will enter the Oklahoma Panhandle this evening and then across the remainder of the Panhandles overnight tonight. The cold front is expected to exit the forecast area by 12Z Wednesday. Unseasonably warm today and then cooler conditions Wednesday.
A cold front will begin entering into northwestern Oklahoma late Tuesday night into Wednesday morning, bringing cooler low temperatures across northwestern Oklahoma (upper 40s to low 50s) compared to the rest of Oklahoma and western north Texas (upper 50s to low 60s).
1012 AM EDT Tue Oct 19 2021 A ridge of high pressure extending from the Upper Great Lakes to the Lower Ohio Valley will slide east through midweek.
An area of low pressure over Utah will continue to lift northeastward with a ridge of high pressure sliding in behind.
An upper level low will shift away from the region this afternoon. High pressure will build into the region once again mid week. The upper level low discussed over the last few days is quite evident on satellite imagery early this morning, with the center nearing the Utah/Colorado border. Expect this band to continue through about 15Z or so and then quickly diminish as the upper level low crosses the Continental Divide. Expect gradual clearing as upper level ridging builds into the area tonight. Seasonal fall temperatures are forecast mid-week under a ridge of high pressure across the state. Look for mild weather conditions through the latter half of the week under the influence of this ridge.
A weather system will move across the Midwest on Wednesday, with scattered showers and isolated thunderstorms ahead of the cold front. No major changes to the short term forecast as we remain under the influence of high pressure and pleasant fall weather continues through Tuesday.
High pressure at the surface and aloft will control the area for the short term period. As the high pressure departs our area, a cold front and attendant upper-level trough will slowly progress from the Midwest to the Ohio Valley.