Aikyam-Lab/Synoptic-Bench huggingface dataset:
1120 PM MDT Sun Sep 22 2019 A Pacific trough moving ashore over the Pacific northwest is expected to deepen as it moves over the western Great Basin tonight. As this occurs, the ridge axis over the region will move east of the Divide and southwest flow aloft develops. Still, strong radiational cooling will cause lows to be colder than normal and freezing temperatures are expected across lower elevations of northwest Colorado. The trough deepens further on Monday with a closed low forming over Arizona. The low continues to transit southward to Mexico Monday night taking any precipitation chances and cloud cover with it.
/issued 326 PM CDT Sun Sep 22 2019/ For this afternoon/evening, a cold front (currently across northern Oklahoma), will continue to move southward. The cold front is expected to stall along the Red River tomorrow with a continued chance for showers/storms across southern Oklahoma and north Texas. In response to lee cyclogenesis, the cold front will lift back to the north Monday night into Tuesday as a warm front. Widespread elevated convection is expected as the warm front lifts to the north Tuesday morning.
302 AM CDT Mon Sep 23 2019 A cold front was pushing through south central Missouri early this morning with some scattered showers remaining along the front. High pressure will slide off to the east tonight with winds turning back to the southeast late in the night. Right now it looks like locations southwest of Springfield will have the highest chances.
316 AM CDT Mon Sep 23 2019 Cold front making slow progress south this morning will continue to move toward the Red River before stalling out this afternoon.
A cold front will move into the state from the NW tonight and continue S through Monday.
1053 PM MDT Sun Sep 22 2019 A quiet evening & overnight period ahead w/ short wave ridging now in place across southeast WY and the western NE Panhandle. By Tuesday morning, a trough will shift across the Rockies but look to split according to multi-model guidance.
327 AM CDT Mon Sep 23 2019 A very quiet weather pattern is forecast for the area through the entire forecast period as persistent ridging at the surface and aloft dominates the Gulf coast region. The mid/upper ridge does become suppressed to the south and east during the last half of the workweek as an upper trough passes to our north before rebuilding across the region again over the weekend. During the time period when the ridge weakens at the end of the workweek, isolated showers may be observed over primarily the western sections of the forecast area. Temperatures will continue to run above normal with daytime highs mainly in the lower to mid 90s. Light easterly flow today will become light and rather variable tonight through mid week as high pressure becomes situated over the area.
1032 PM MDT Sun Sep 22 2019 Water vapor shows upper low over the Northern Plains, ridge over the Northern Rockies, and next trof moving onshore the Pac NW. A few lingering showers across the CWFA early this afternoon in associated with upper trof. Dry and much warmer weather is expected for Monday with upper ridge building overhead. Upper trof moving through the western CONUS will split, with northern stream energy pushing a cold front through Tuesday. This will bring gusty northwest winds and cooler temps for mid week.
This will allow for skies to clear with high pressure dominating the area on Monday. Temperatures will be in the upper 70s to the lower 80s across the region. Thus, severe weather is certainly possible on Tuesday afternoon and evening ahead of the cold front.
304 AM EDT Mon Sep 23 2019 Scattered rain showers early this morning will be followed by clearing skies and cooler temperatures today into Tuesday.
Therefore, highs were lowered into the lower to mid 80s on Tuesday.
Currently, the Tri-State area is under the influence of an upper level ridge. Highs will be in the mid to upper 70s today and the low to mid 80s tomorrow. Lows overnight tonight and tomorrow will be ranging in the lower 40s to lower 60s. A weak upper trough will be situated over northeastern Kansas Tuesday morning with a closed low over southern California and southwestern Arizona. Through the day, the trough over the Tri-State region will push east while the low remains in the southwest.
206 AM EDT Mon Sep 23 2019 A cold front will bring scattered showers to the region Monday. This wave, and a prefrontal trough, should spread scattered showers across the region this morning. The main upper trough, and its associated cold front, are progged to approach and cross the region Monday afternoon.
249 AM MDT Mon Sep 23 2019 08z surface analysis high retreating to the southeast and lee trough developing from central MT into eastern CO. Tuesday, upper trough splits as it moves eastward.
621 AM EDT Mon Sep 23 2019 Scattered rain showers early this morning will be followed by clearing skies and cooler temperatures today into Tuesday.
Some marine stratocu trapped under the subsidence inversion will move onshore through the afternoon in the low level ENE-NE flow.
1035 AM EDT Mon Sep 23 2019 A cold front will push east through the area today, offering showers and embedded thunderstorms. High pressure will build in tonight through Tuesday providing cooler and dry weather. Cold front has worked its way into northwest counties and will continue to move east through the day clearing the forecast area by mid to late afternoon. This drier and cooler airmass will offer temperatures close to normal. Expect lows generally in the lower and middle 50s tonight. The high will build across the area Tuesday with abundant sunshine and comfortable temperatures in the mid and upper 70s.
1042 AM EDT Mon Sep 23 2019 A weakening cold front/trough will move through the area late tonight. General high pressure and even warmer conditions are expected for the remainder of the week. High pressure along with dry air will remain over the region today with a weakening cold front moving into the area tonight. With upper level ridging over the eastern US afternoon high temperatures will again be in the upper 80s to low 90s with low temperatures tonight in the mid 60s. The upper ridge will shift to the south as upper trough moves to New England and the Mid Atlantic coast. Weak front/trough should set up just south of the area with limited moisture. So favor warmer temperature guidance/dry forecast and expect well above normal temperatures. High temperatures mainly in the low 90s and lows in the 60s.
640 AM EDT Mon Sep 23 2019 A weakening cold front/trough will move through the area late tonight. General high pressure and even warmer conditions are expected for the remainder of the week. High pressure along with dry air will remain over the region today with a weakening cold front moving into the area tonight. With upper level ridging over the eastern US afternoon high temperatures will again be in the upper 80s to low 90s with low temperatures tonight in the mid 60s. The upper ridge will shift to the south as upper trough moves to New England and the Mid Atlantic coast. Weak front/trough should set up just south of the area with limited moisture. So favor warmer temperature guidance/dry forecast and expect well above normal temperatures. High temperatures mainly in the low 90s and lows in the 60s.
617 AM CDT Mon Sep 23 2019 Upper ridging will build over the region today ushering in warmer temepratures in the upper 70s to around 80. Another upper trough and a sfc cold front will move through the plains on Tuesday.
321 AM MDT Mon Sep 23 2019 Colorado remains under a ridge of high pressure early this morning, but this will be shifting east of Colorado later today as upper level trof of low pressure digs into the Great Basin. Ahead of the trof, expect increasing high level moisture today as the flow turns more southwesterly. For tonight, the upper trof splits with much of the dynamic energy shifting south into the desert southwest while northern branch approaches Colorado and some increase in westerly flow over the mountains. For the extended, the upper level low will be in place over the desert SW.
512 AM MDT Mon Sep 23 2019 08z surface analysis high retreating to the southeast and lee trough developing from central MT into eastern CO. Tuesday, upper trough splits as it moves eastward.
A deep and cold trough will set up over the Great Basin beginning late week.
546 AM EDT Mon Sep 23 2019 A cold front will bring showers to the region today.
High pressure will be in control of the weather today, providing a light north to northeasterly flow aloft and east to east northeast flow at the surface.
743 PM EDT Wed Jun 30 2021 Periodic showers and storms will continue until passage of a cold front on Thursday. All are in response to an upr trough/cold front sagging southward out of the Great Lakes Region. Aloft, ridging attempts to intrude into the area cutting off moisture to the area from the northwest. However, the pattern aloft yields a bit to a semi blocking off the Atlantic coast. This keeps the upper low meandering a bit longer.
539 PM CDT Wed Jun 30 2021 Tonight we will remain under the influence of a very weak trough extending west-southwest from a more prominent upper level trough over eastern Canada. Aside from our diurnal cumulus, which should again dissipate toward sunset, the weak upper level trough will have little impact on our weather tonight, with mostly clear skies and light winds again expected. Thursday through Thursday night, the aforementioned weak trough drifts southward, while an upper level ridge becomes the dominant feature across the northern Plains.
There are also numerous embedded outflow boundaries in the lower tropospheric easterly flow that warrants this. An upper level trough slowly slides southeast into the northeastern U. while upper level ridging remains rooted in place over the southwestern Atlantic and south-central U. This gradually shifts to southerly then westerly as the high shifts east. Temperatures stay pleasant for this time of year, with highs in the middle to upper 80's and lows in the lower 70's.
The main focus for this forecast is showers/thunderstorms today/tomorrow and warmer temperatures this weekend. The massive west coast ridge is building northeast into the central CONUS and the Great Lakes trough is slowly sliding southeast while Gulf moisture continues to stream into the central Plains. By Thursday morning, the Great Lakes trough should continue to dive further southeast. Surface ridging will slowly build south as a result. Temperatures should be warmer tomorrow, especially north, as skies begin to clear and solar insolation increases.
1044 PM EDT Wed Jun 30 2021 Currently - A surface through lower level Atlantic ridge extends westward through the southeastern United States. A few other swathes of active showers and embedded thunderstorms remain across the area, mainly in the outer Florida Straits with some activity approaching the Lower Keys. Short Term Update - Ridging to our north will begin creeping southwards through the overnight period. A ridge across the southeast will settle further southwards towards Florida through the overnight period.
722 PM EDT Wed Jun 30 2021 High pressure will continue over the area from the Atlantic through tonight.
/61/ Some patchy fog is being advertised on some of the high-res guidance across the northern half of Central Alabama within river and valley locations. The day on Thursday will finally feature a change in the weather pattern as the deep longwave trough dives southward, sending a surface cold front in our direction.
although it will be somewhat cooler and less humid. Cooler air aloft gradually infiltrates the region yielding a more unstable regime going into tonight and the early part of tomorrow. More organized showers will return by afternoon on Thursday as another wave associated with the upper low digs southeastward. Showers chances will diminish some, but linger well into Thursday night as the upper cutoff low continues its descent into the Lower Great Lakes.
628 PM CDT Wed Jun 30 2021 Next in series of mid level troughs working into the western Great Lakes this afternoon. Meanwhile another short wave trough follows the first dropping into the region early Thursday. Could also be a few degrees cooler than Wednesday with weak cold air advection with wave passage. A high- amplitude trough will dig its way into the eastern part of the Great Lakes region from the north, putting our region in an area of broad subsidence.
950 PM EDT Wed Jun 30 2021 High pressure will continue over the area from the Atlantic through tonight.
although it will be somewhat cooler and less humid. Cooler air aloft gradually infiltrates the region yielding a more unstable regime tonight and the early part of tomorrow. More organized showers will return by afternoon on Thursday as another wave associated with the upper low digs southeastward. Showers chances will diminish some, but linger well into Thursday night as the upper cutoff low continues its descent into the Lower Great Lakes.
515 PM EDT Wed Jun 30 2021 The upper ridge over the region continued to weaken today, allowing more showers and thunderstorms to develop than in recent days. However, an upper trough dropping southeast from the Great Lakes will bring a modest increase in winds aloft overnight, along with lowering geopotential heights and upper level support for precip in the form of the right entrance region of an upper jet. Its cold front will also drop south southeast toward the Ohio Valley, and low level flow will increase ahead of it.
Conditions tonight are expected to be dry as a mid-level ridge enters the area.
609 PM CDT Wed Jun 30 2021 (This evening through Thursday) An upper-level ridge will continue to remain over the area through tomorrow. As a stronger cold front moves in from KS overnight, rainfall will transition from north to south through the day tomorrow.
A trough moving trough the Pacific NW has broken down the high pressure ridge over northern California today and is bringing an increase in onshore flow. However, warmer than normal temperatures are forecast to continue for areas generally north of Interstate 80 since the onshore flow will not reach those areas as well. For the most part, the forcing remains over the high Sierra with little chance of thunderstorms making it to the lower elevations.
747 PM EDT Wed Jun 30 2021 High pressure ridging into the area from the western Atlantic will move east and lose its influence across the region.
800 PM EDT Wed Jun 30 2021 High pressure will continue over the area from the Atlantic through tonight.
/22/ Prior discussion below: Tonight and tomorrow: Upper ridging will continue to break down as a longwave northern stream trough drops into the Great Lakes with an associated trough axis extending into the middle Mississippi Valley. Otherwise, partly cloudy skies with temperatures in the low 70s are expected. Heading into tomorrow, a surface cold front diving through the Great Plains and Midwest is progged to be located just north of the area.
Overnight lows will fall into the lower 70s areawide. On Thursday, the upper ridge centered over north-central Texas will retrograde westward. At the same time, a cold front will slowly push southward through the Southern Plains towards the region. Highs should still manage to get into the lower 90s across most of the region, but there could be some exceptions depending on the extent of the rain coverage.
before gradually tapering off from north to south on Thursday as a cold front passes through the region. Scattered showers will persist ahead of a slowly approaching cold front through the remainder of the night. Central IL remains south of a cold front draped across northern IL, with warm and humid conditions to the south. High precipitable water values and a weak trough/col across central IL are allowing a series of weak disturbances to form clusters of showers and a few thunderstorms, and should continue until the cold front arrives Thursday.
1046 PM EDT Wed Jun 30 2021 High pressure ridging into the area from the western Atlantic will move east and lose its influence across the region.
Flow wise, tomorrow looks to be a transition day as the ridge axis shifts, leading to the eventual SW flow.
/22/ Tonight and tomorrow: Upper ridging will continue to break down as a longwave northern stream trough drops into the Great Lakes with an associated trough axis extending into the middle Mississippi Valley. Otherwise, partly cloudy skies with temperatures in the low 70s are expected. Heading into tomorrow, a surface cold front diving through the Great Plains and Midwest is progged to be located just north of the area.
Regardless, still expect some potential overnight based on existing good moisture and proximity of upper level trough. Rain chances will begin to increase Thursday morning especially across northern sections as the trough approaches.
415 PM CDT Wed Jun 30 2021 Tonight and tomorrow: Upper ridging will continue to break down as a longwave northern stream trough drops into the Great Lakes with an associated trough axis extending into the middle Mississippi Valley. Otherwise, partly cloudy skies with temperatures in the low 70s are expected. Heading into tomorrow, a surface cold front diving through the Great Plains and Midwest is progged to be located just north of the area.
743 PM EDT Wed Jun 30 2021 Showers and thunderstorms are forecast to develop this evening and continue through Thursday as a cold front travels from the Great Lakes to the Ohio Valley.
934 PM EDT Wed Jun 30 2021 Surface analysis this evening shows a weak cold front in place across northern IL and southern Michigan. Overnight the cold front to the north is expected to slowly sag southward toward central Indiana. Low in the lower 70s appear quite reasonable given the warm dew points in place across Central Indiana. Any showers that do initiate will dissipate around sunset with much cooler air advecting into the area going into the weekend as surface and upper level flow turns near northerly as a strong upper level moves into the Northeastern United States.
538 PM MDT Wed Jun 30 2021 Upper ridge will shift quickly east with deep layer southerly flow becoming established over the front range.
KPL (Issued 304 PM CDT Wed Jun 30 2021) Tonight through Thursday night: A back door cold front will drop through the area tonight, with isolated showers and a rumble or two of thunder possible behind the front, mainly in the east. Moisture will be on the decrease through the day behind the back door cold front, which is expected to have moved through by daybreak. Temps will be warmest west Thu, as onshore winds and cooler temps aloft will keep it cooler east.
A cooler and dryer air mass will backdoor it's way into the region starting late tonight and into Friday. This will usher in a period of lower humidity and cooler temperatures for the weekend.
344 AM CDT Thu Jul 1 2021 Early morning water vapor imagery shows an elongated upper trough swinging over the Great Lakes region, with the western extent moving southwards across the northern plains. Areas west of I-29 will likely begin to see slightly breezy conditions from the south by the afternoon hours, and will thus be able to mix down warmer air aloft keeping afternoon temperatures in the lower 90s.
Regardless, still expect some potential overnight based on existing good moisture and proximity of upper level trough. Rain chances will begin to increase Thursday morning especially across northern sections as the trough approaches. Still looks like a cold front will move through the area late Thursday night and Friday morning.
258 AM CDT Thu Jul 1 2021 Satellite imagery/areas radars are detecting developing convection from western KS into far southeastern KS, along the northern periphery of the upper ridge. Weak mid-level troffing will develop through the southern Plains by mid week, with low chances of showers/storms returning.
Chances for convection will continue especially across Northeast Arkansas, the Missouri Bootheel, and Northwest Tennessee for the remainder of the night as convection that is occurring across Missouri near the vicinity of the approaching cold front begins to sink south into the Mid-South. The cold front will sink south into the Mid-South Thursday into Thursday Night. The high pressure will provide a beautiful Independence Day weekend across the region.
Ridging aloft that has resided over the northwest CONUS and western Canada is expected to flatten quite a bit as s/w energy flows in off the Pacific Ocean.
Should see a lull for a few hours late this evening into early tonight before the upper trough and surface cold front move in late tonight into Thursday. Humidity will be lower with highs in the low to mid 80s and lows in the mid 50s to 70s, making for a pleasant Independence Day weekend. Will finally see the cold front move through the area on Thursday along with upper level energy.
201 AM EDT Thu Jul 1 2021 An isolated shower possible this evening otherwise drier and cooler air begins to filter into the region Thursday and Friday.
Convective activity is expected to increase along the Plateau tomorrow morning as an upper trough and cold front approach from the northwest. LW Chattanooga Airport, TN 88 71 81 63 84 / 80 90 80 10 0 Knoxville McGhee Tyson Airport, TN 86 69 80 61 82 / 90 100 70 10 10 Oak Ridge, TN 85 69 81 60 82 / 90 100 60 10 10 Tri Cities Airport, TN 85 66 77 58 80 / 90 100 60 10 10 TN.
Vast amounts of moisture remain over NM again today, thanks in part to Tropical Storm Enrique, northern Mexico convection and an upper low approaching the Big Bend of TX. With an upper high approaching from the east we should get longer breaks from the clouds to warm temperatures quite a bit Thursday. Also, the storms will be moving slower with the high heading our way. A back door cold front Thursday night will bring in a fresh batch of low level moisture to the east.
1047 PM MDT Wed Jun 30 2021 Upper ridge will shift quickly east with deep layer southerly flow becoming established over the front range.
Afternoon thunderstorms diurnally driven will be patchy throughout the CWA out a head of a cold front set to bring more widespread rain and thunderstorms beginning late tonight and through Friday.
The main focus for this forecast is showers/thunderstorms today/tomorrow and warmer temperatures this weekend. The massive west coast ridge is building northeast into the central CONUS and the Great Lakes trough is slowly sliding southeast while Gulf moisture continues to stream into the central Plains. By Thursday morning, the Great Lakes trough should continue to dive further southeast. Surface ridging will slowly build south as a result. Temperatures should be warmer tomorrow, especially north, as skies begin to clear and solar insolation increases. Friday through the July Fourth holiday continues to look dry as high pressure builds over the central Plains.
Guidance in very good agreement with upper ridging propagating into and over the region by Friday. Airmass will continue to warm each day, with daytime temperatures near 90F today, and into the low/mid 90s Friday. A ridge continues to translate across the region over the weekend, with zonal flow setting up after. Under the ridge temperatures continue to be hot, with record setting highs possible.
Quiet weather should continue until about noon, when isolated storms should fire on the Sierra and White Mountains of Inyo County, across Esmeralda, central Nye, and Lincoln counties, on the higher terrain of Clark county, and into eastern Mohave county.
Numerous showers and thunderstorms are expected to form along and behind the front which is also on the northern periphery of the strong upper high over northern Texas.
High pressure building into the area will usher in much less humid conditions.