Aikyam-Lab/Synoptic-Bench huggingface dataset:
257 AM CDT Sun Aug 20 2017 Today, a cold front will continue to slide east and slowly south across the region leaving a weak baroclinic zone across southern North Dakota.
629 AM EDT Sun Aug 20 2017 High pressure will build across the area today through Monday bringing seasonably warm, dry weather to the area today then warm and more humid weather on Monday.
High pressure remains over the Atlantic Ocean while the tropical wave moves through the southern edge of the ridge. The Atlantic ridge will rebuild across the Florida Peninsula overnight and Monday, while the next tropical wave moves along its southern periphery.
Morning lows will be in the low to mid 70s, upper 70s along the immediate coastline. The upper low in the Gulf of Mexico will continue tracking slowly westward through the short term period, while at the same time mid level ridging will build across the Southeast, generally along a line from Charleston SC westward to near Memphis TN. With SE flow behind the upper low, it's expected a corridor of increasing low- mid level moisture will spread across the Florida Peninsula south of the mid level ridge on Sunday, and that this moisture will then move westward across the Gulf Coast through the end of the short term period. High temperatures, while quite warm on Sunday in the mid 90s will be a little cooler on Monday due to more cloud cover and anticipated storms.
Upper and surface ridging will be the rule for Today and Tonight. On Monday (Eclipse Day), a strong 500mb ridge will expand with heights expected to be around 594-596 dm which is near the 97th-99th percentile compared to climatology for this time of year. Cannot rule out about 10 percent PoPs around the higher terrain where differential heating will create a valley-mountain circulation with rising air across the higher elevations and sinking air across the Tennessee Valley. Models is good agreement tonight with only very limited convection anticipated across the higher terrain features. High temperatures expected to be slightly cooler by a degree or two as well. Overall, it is still looking like good viewing conditions for the area with mostly clear skies across the valley and additional cumulus/partly cloud skies across the higher terrain.
113 AM EDT Sun Aug 20 2017 High pressure will provide fair weather into tonight and Sunday, with lows near 60 degrees tonight and highs in the 80s tomorrow.
135 AM EDT Sun Aug 20 2017 Mostly clear skies and very light to calm winds will take hold of the region tonight as as high pressure builds in. The high will bring seasonal weather for Sunday and Monday.
355 AM CDT Sun Aug 20 2017 Another dangerously warm day is expected throughout the ArkLaMiss on Sunday as upper level ridging becomes centered over the region and the broad mid and lower level highs remain in place. 925mb temps will be slightly warmer today than they were yesterday, especially in the eastern portions of the region where temperatures have exceeded guidance the last two days. Lows tonight will fall into the low to mid 70s under mostly clear skies.
Mid and upper level ridge will build into s Ga today from the east.
Another dangerously warm day is expected throughout the ArkLaMiss on Sunday as upper level ridging becomes centered over the region and the broad mid and lower level highs remain in place. 925mb temps will be slightly warmer today than they were yesterday, especially in the eastern portions of the region where temperatures have exceeded guidance the last two days. Lows tonight will fall into the low to mid 70s under mostly clear skies.
405 AM CDT Sun Aug 20 2017 An upper low over the southwestern states today will track northeast across the southern Rockies and approach the Panhandles by tonight and Monday. Chances for convection expected to increase today through early this week as upper low becomes absorbed into longwave trough moving eastward across the Rockies and Plains states.
313 AM EDT Sun Aug 20 2017 The latest surface map features a weak quasi-stationary frontal boundary located just north of the Ohio River, amidst high pressure generally sprawled from the eastern Ohio Valley down through the southern Appalachians. Aloft, a short wave trough is pulling away across New England, with rising heights across the lower and mid-Mississippi Valley. Warming temperatures and mostly clear skies will be on tap across eastern Kentucky through the short term, as an upper level ridge builds in across the southeastern CONUS.
It is possible that a stratus cloud layer could develop overnight as cooler air moves southward behind the exiting front. Building high pressure will result in a dry day with seasonable temperatures.
Beginning on Sunday night, the region is under a ridge with southwest flow. Monday shows a shift in upper level flow as a trough moves far north of the CWA but still shifts the flow to more of a northwest one.
407 AM EDT Sun Aug 20 2017 Ridging aloft stretching across the Gulf coast states into Texas strengthens through this evening as it shifts eastward. This drop in temperature is not expected to impact the high temperatures Monday. Atwell The upper ridge will dominate our forecast area into the middle of the upcoming week with mainly diurnal showers and thunderstorms across north and central GA.
Otherwise, outside of areas of smoke today, skies are expected to be partly sunny with afternoon highs mainly in the lower to middle 80s. As a result, will keep shower/thunderstorm chances across Custer, Fallon, Powder River and Carter counties tonight, with the highest chances along the Dakota borders. High pressure ridging builds across the Pacific Northwest Monday as an upper low will be over east central Canada. Afternoon highs on Monday will be very similar to today or just a degree or two warmer, although smoke may hinder the temperatures just a bit both today and Monday.
343 AM EDT Sun Aug 20 2017 A weak cold front will move across the area from the north today and then stall and dissipate offshore tonight.
Cooling will continue early this week as an upper trough of low pressure becomes nearly stationary over the eastern Pacific. A nearly stationary upper level closed low will remain along the Central Coast through early to mid week. Cooler temperatures will continue this week with comfortable day time highs expected most places with only far inland locations experiencing warm to hot temperatures. Medium range forecasts indicate some strengthening of an upper level high over the Desert Southwest and California.
338 AM CDT Sun Aug 20 2017 Cold front continues to move eastward across the region and has just recently moved through ABR. There is some MUCAPE and effective shear to work with, but the bulk of the higher values are moving eastward with the front, with more stable air back to the west.
The greatest coverage of thunderstorms should occur east to south of Tucson, but the lower deserts will not be completely left out. A weak upper low remained centered just west of the southern California coast early this morning, and high pressure aloft was centered over south Texas.
647 AM EDT Sun Aug 20 2017 High pressure with fair weather will build across the area through Monday.
325 PM EDT Sun Sep 17 2017 Unseasonably strong high pressure centered over the region will bring a prolonged period of dry weather, along with unseasonably warm temperatures through the coming week. Stagnant high pressure will remain anchored over the region through tonight, with seasonably high boundary layer moisture content remaining in place despite the lack of recent rainfall. A narrow high amplitude ride will remain anchored from the western Gulf northeastward through western Pennsylvania, framed by Hurricane Jose to the east and an upper level trough to the west.
107 PM MDT Sun Sep 17 2017 Water vapor images showed a trough over central MT/WY moving toward the CWA. Monday will be dry and warmer than today as the 850-mb temperatures rise to the lower 20s Celsius.
1217 PM CDT Sun Sep 17 2017 At 2 AM, a cold front extended from Ontonagan Michigan (western Upper Michigan) southeast to Prairie du Chien Wisconsin. Trough looks to deepen some en route, possibly with convective enhancement in CO later today/evening.
Clouds have been slower to decrease across the eastern counties than originally expected and there has been some cumulus formation from the highway 2 corridor northward. Water vapor loop indicated an upper level trough was located from southern ALTA/SASK border to ND. Trough was rotating to a negative tilt into southern Canada with better than 130M height falls to the north. ALTA/SASK portion of the trough will move east across southern MAN this afternoon. Next upper level trough off the west Canadian coast will approach the forecast area Tue night.
228 PM EDT Sun Sep 17 2017 High pressure will remain in control of the weather pattern across northeast Georgia and the Carolinas through much of the week, leading to above normal temperatures and below normal precipitation chances.
326 PM EDT Sun Sep 17 2017 Weak high pressure centered over the Northeast will extend south down the Appalachians into the Mid Atlantic through Monday.
150 PM CDT Sun Sep 17 2017 Upper trough extends southward across the Intermountain West as a ridge extends northward from the Gulf up across OH. The ridge will get flattened out as the trough moves east but it will be reinforced by additional troughs moving down over the NW.
450 PM EDT Sun Sep 17 2017 20z sfc analysis shows relative high pressure through the area and this is keeping the shower threat at bay while some activity is noted well to the west. Temperatures did get up to the low 80s most places, just above normals and the earlier guidance. Meanwhile, with light northerly winds, dewpoints are generally in the lower 60s. They all depict a weakening ridge over the southeast part of the nation. Given the model symmetry will favor a blended solution with a lean toward the higher resolution CAMs and a good bit of persistence - especially at night. Again used the CONSShort and ShortBlend as the starting point of all the grids making some adjustments to the temperature ones each night based on terrain in anticipation of small to moderate ridge and valley splits.
A big weather pattern change will bring much cooler temperatures, rain and high mountain snow to the region by Monday and continue for much of the work week.
At upper levels upper high overhead today which has been an inhibitor to thunderstorm development.
An upper trough and additional weather systems will keep the weather cool and showery into the middle of the week. An upper trough will move over the area Monday with snow levels lowering to 5000 to 5500 feet. The higher locations in the mountains could pick up a few inches of snow.
342 PM CDT Sun Sep 17 2017 (Tonight and Monday) Southwest flow aloft will continue across West Central Texas as the 500mb ridge remains in place along the southern Gulf Coast. Early morning cloudiness will give way to mostly sunny skies and temperatures will climb into the low to mid 90s.
222 PM EDT Sun Sep 17 2017 Weak high pressure will continue to cover the eastern United States through the week.
334 PM CDT Sun Sep 17 2017 Overnight rainfall followed by a day of cloud cover has helped keep the cooler airmass in place, with the office just hitting 70 over the past hour. Of note for convection potential are a weak wave over Western Kansas, with stronger convection along the high plains east of the Rockies.
The 12z DTX sounding showed a significant warm layer around 650 MB, which may be too much to overcome to generate much in the way of showers and thunderstorms this evening, especially with surface dew pts mostly in the lower 60s. On the flip side, there does look to be an upper level PV filament streaking out of northern Missouri, which tracks through the State tonight, which could be enough to support an uptick in activity despite the loss of surface/daytime heating, as a repositioning/ modest increase in the low level jet occurs overhead. Regardless, main moisture axis exiting southeast Michigan around 12z, leading to a dry day on Monday as 850-700 mb Theta-E min/surface ridging become established, with PW values dropping under 1 inch.
SHORT TERM (Tonight through Monday Night): 500mb ridge across the western Gulf of Mexico and south Texas will provide subsidence across the CWA in general tonight into Monday. isolated showers and thunderstorms will develop across the coastal sections of the CWA Monday as the seabreeze front develops along the lower Texas coast and moves inland.
357 PM EDT Sun Sep 17 2017 A weak cold front will approach the region tonight and stall in western Ohio on Monday and weaken.
Moisture remains limited enough, especially under high pressure, for activity to develop farther inland. As for temperatures, daytime temperatures will continue to run near normal for the coastal region in the lower 90s, to above normal in the upper 90s farther west across the Brush Country. Lows will range in the mid to upper 70s along the Rio Grande and along the coast, with lows in the lower 70s inland.
1219 PM CDT Sun Sep 17 2017 The stacked low pressure system responsible for the rains the past few days was over southern Manitoba and western Ontario today. Expecting partly to mostly sunny skies this afternoon, with temperatures rising through the 50s and into the lower and mid 60s this afternoon. Subtle area of associated low pressure will move with the wave and will bring a chance for light showers to my south central and James River Valley counties this evening/early Monday morning.
Deep layer ridging across the Gulf of Mexico will help maintain dry conditions across the area. Deep layer ridging will give way to a near zonal flow with a light low level gradient mid week. Rain chances increase at the end of the week into the weekend as a mid/upper trough drops southeast into the southeast U. and Gulf of Mexico and a deep layer ridge develops across northern New England. The combination of the upper trough and deepening onshore flow will bring scattered showers and a few storms to the area with best chances along the coast.
356 PM EDT Sun Sep 17 2017 South Florida sits between the counterclockwise flow around Hurricane Jose and clockwise flow from high pressure over the Gulf are providing a somewhat unseasonal northerly flow across the area. The pattern will shift slightly as Jose moves north and the high shifts slightly further west. A mid-level trough extending offshore of South Florida from Jose could allow for some convection tomorrow, particularly along the coast in the morning.
255 PM CDT Sun Sep 17 2017 The surface cold front which moved through the area with dissipating rains prior to dawn is now from near Chicago to Kansas City. A confidently dry evening will given way to questionable pops for the rest of the night, as a short wave trof over Nebraska and Kansas lifts northeast over the frontal boundary.
Cooler weather is located just to our north but it won't be coming down anytime soon. A cold front is draped across central Oklahoma into northwest Texas at this time and is serving as a focus for scattered shower and thunderstorm activity. With west and southwest flow aloft, temperatures will again warm into the low to mid 90s.
Cooler weather with a chance of showers by mid-week. A weak trough is over the area with just some high clouds. Temperatures are a few degrees cooler than this time yesterday.
237 PM EDT Sun Sep 17 2017 Weak low pressure in the upper atmosphere will keep a slight threat of afternoon showers around the region through Monday.
Meanwhile, a weak outflow enhanced cold front was sagging southward through the Panhandle and should manage somewhere near our northwest zones before stalling out much of the day - lifting back north later today. Mid and upper flow will veer Monday behind a wave ejecting out of the currently low amplitude longwave trough over the intermountain west.
Dry weather continues on Monday for the bulk of the CWA out ahead of an upper Pacific trough and surface cold front. The Pacific trough will move eastward on Monday, with showers and isolated thunderstorms possible first in our western areas late Monday afternoon. Then the cold front associated with the trof will bring a good chance of showers along with some frontal wind across the area Monday night.
654 PM EDT Sun Sep 17 2017 A weakening cold front will move into the area tonight into Monday, becoming stationary by Monday night.
308 PM MDT Sun Sep 17 2017 Early afternoon water vapor loop showed the upper trough axis entering western WY and northern UT. Scattered showers and thunderstorms will taper off from west to east later this evening across the plains as the upper trough moves through the CWA.
1237 PM CDT Sun Sep 17 2017 249 AM CDT Post frontal convection continues over central Iowa under the influence of a negatively tilted trough across South Dakota and Minnesota. The trough continues northeast into Canada this morning while the cold front moves through the forecast area this afternoon. With dewpoints already in the low 60s, we should have enough surface moisture to support convection along the front. Rain ends across the forecast area as the cold front pushes southeast tonight. Cooler air will result in low temps in the low 50s near RFD to low 60s along and east of I-55. JEE 249 AM CDT Highs Monday will be cooler in the mid 70s to around 80.
Associated cold front cuts across far western Upper MI with sct to nmrs shra and some thunder along/ahead of it. Cold front will continue to sweep eastward today, exiting the eastern fcst area early this aftn. However, temps over the eastern fcst area, especially closer to Lake Superior, should fall into the lower 60s rather abruptly this aftn as winds shift to the nw off Lake Superior. 35 inches for at least for the first half of the night, favored some of the lower guidance for mins in the interior, especially w half where winds will diminish quickest to light/calm during the evening.
Precip will probably develop over some of the higher terrain in the late morning hours, then spreading over the adjacent lower elevations in the early afternoon.
305 PM EDT Sun Sep 17 2017 Weak low pressure in the upper atmosphere will keep a slight threat of afternoon showers around the region through Monday.
527 PM EDT Sun Sep 17 2017 Unseasonably strong high pressure centered over the region will bring a prolonged period of dry weather, along with unseasonably warm temperatures through the coming week. Stagnant high pressure will remain anchored over the region through tonight, with seasonably high boundary layer moisture content remaining in place despite the lack of recent rainfall. A narrow high amplitude ride will remain anchored from the western Gulf northeastward through western Pennsylvania, framed by Hurricane Jose to the east and an upper level trough to the west.
130 PM CDT Sun Sep 17 2017 High pressure moving east across the area this afternoon producing mostly sunny skies with cooler/pleasant temperatures ranging from the middle 60s to a few lower 70s. High pressure will slip off to the east tonight as a mid-level trough ejects northeast out of the Central Plains. Scattered showers will then spread northeast across the area for Monday as that mid-level trough tracks northeast into the Upper Mississippi River Valley. Scattered showers/cloud cover will keep temperatures on the cooler side with highs in the 60s to near 70. Scattered showers will linger into Monday evening, tapering off after midnight as that mid-level trough exits east. Although there is fairly broad/weak warm air advection and isentropic lift ahead of low pressure moving into the Northern Plains, NAM bufkit sounding keeps things dry.
A big weather pattern change will bring much cooler temperatures, rain and high mountain snow to the region by Monday and continue for much of the work week. A cold front will sweep through the TAF sites from NW to SE overnight with light rain, local moderate rain is possible across the southeast TAF sites toward early Monday morning and will slow to decrease.
345 PM CDT Sun Sep 17 2017 Mid-afternoon sfc analysis shows high pressure centered over the sern CONUS remaining in control of our region with local 88D VWP products showing a light onshore low/mid-level flow in place. Water vapor imagery shows ridging in place from nrn Mexico through the wrn Gulf region to the mid-South. Higher up, next storm system crossing the wrn CONUS should help flatten the ridging aloft, providing a little relief to the mid-level capping. Light and mostly onshore flow should continue through the period with high pressure remaining anchored to our east or northeast.
1251 PM CDT Sun Sep 17 2017 Cold front is roughly in the vicinity of the IL River Valley this morning and some very scattered showers are falling apart as they move into the region. Early morning surface map shows our incoming cold front extending from about Kansas City northeast into the Upper Peninsula of Michigan. By afternoon, redevelopment will be taking place east of I-55 as the cold front arrives. The stalling out of the front will prevent any significantly cooler air moving in tonight, although areas near Galesburg may dip into the upper 50s. The upper pattern over Illinois will continue to be out of the southwest much of the week, with the western trough periodically digging southward. Significant amplification of the ridge over the eastern U.
10 am temps similar to, but perhaps a degree or two warmer than same time yesterday. In all, temps rising about 10 to 12 more degrees into the lower 90s appears on track.
139 PM EDT Sun Sep 17 2017 High pressure will remain in control of the weather pattern across northeast Georgia and the Carolinas through much of the week, leading to above normal temperatures and below normal precipitation chances.
135 PM EDT Sun Sep 17 2017 Weak high pressure centered over the Northeast will extend south down the Appalachians into the Mid Atlantic through Monday.
402 PM CDT Sun Sep 17 2017 High pressure at the surface and aloft over the area has produced isolated to scattered convection, primarily along lake and sea breeze boundaries.
247 PM CDT Sun Sep 17 2017 Scattered to numerous showers and thunderstorms have formed north of a cold front that extends from near Prague to just south of Norman to near Wichita Falls. If a sustained mesocyclone can develop, large hail would be a threat.
Brusda An upper level trof of low pressure will approach the region on Monday.
314 PM PDT Sun Sep 17 2017 Cooler weather this week with a chance of showers by mid-week. Temperatures on Monday will be about 4 to 7 degrees cooler than we are seeing today, with Valley highs in the lower 80s.
335 PM EDT Sun Sep 17 2017 A weakening cold front will move into the area tonight into Monday, becoming stationary by Monday night.
1209 PM CDT Sun Sep 17 2017 Upper level short wave trough is lifting out negatively across the Dakotas. This has allowed the surface cold front to move southeast and at 07Z extended from eastern Iowa to southeast Kansas. The front is forecast to stall out over southern Kansas and then lift northward as a warm front tonight into Monday.
Upper ridge across the Gulf states will keep the front from making significant headway into the area, so confident highest chance of rain and thunder will remain across the northern tier or two of counties through the rest of today.
258 PM MDT Sun Sep 17 2017 An upper level trof of low pressure will approach the region on Monday.
340 PM EDT Sun Sep 17 2017 High pressure will bring patchy fog again tonight and sunny and warm weather on Monday.
312 PM CDT Sun Sep 17 2017 The surface cold front will remain deep into the panhandles this afternoon, but begin to turn back north as a warm front by later this evening. Lows for early Monday do not look to be much warmer despite warm advection, however may be noticeably warmer in the southeast sections. The warm front will help scour out the low level moisture, bringing full insolation back and a bump back into the mid and upper 80s Monday afternoon.
LRD should mainly be impacted by the lowering CIGs.
High pressure will be present over the southern MS Valley. The flow around this high pressure will allow for mid level flow from the north. a weak trough and boundary will move from the west to east across the Great Lakes region.