Aikyam-Lab/Synoptic-Bench huggingface dataset:
Satellite and radar images and surface observations indicate convection offshore the lower Texas coast this morning. /issued 407 AM CDT Sun Sep 25 2016/ SHORT TERM (Today through Monday): A 500mb low will develop across northwest Mexico today as the main energy associated with the 500mb trough across the west- central United States moves into the north- central U. a weak cold front will move across northwest TX today. Rain chances will increase across western portions of deep south TX late tonight into Monday as the 500mb low across northwest Mexico and the 500mb trough moving eastward across the north central U. Will adjust pops slightly higher west and slightly lower east tonight into Monday and mention heavy rainfall with thunderstorms Monday as moisture continues to pool along and ahead of the weak cold front across south TX.
359 PM EDT SUN SEP 25 2016 High pressure over New England will depart to the east tomorrow. A strong cold front will move across the area on Monday bringing a transition to below normal temperatures. An upper level low will linger over the region through mid-week. A good surge of moisture advection will reach northwest Ohio overnight in advance of the approaching cold front. The cold front will move east across the area on Monday and is expected to clear the northwest Pennsylvania counties by mid- afternoon. Shower activity should get a boost in coverage by mid-day from a combination of daytime heating and lift ahead of the deep trough pivoting in from the west. This cold front ushers in the coolest airmass of the fall thus far with highs in the 60s and lows in the 40s through mid-week.
A strong early autumn upper ridge will be over the northeast Pacific and the Pacific Northwest today, slowly moving eastward Monday, producing mild and dry weather over southwest Washington and northwest Oregon today and Monday.
Adjusted the high temperatures down a degree or two to be more in line with latest short term guidance.
A strong low pressure system currently centered over southern Manitoba with an upper low over North Dakota will continue to move to the northeast today. Sunshine will allow for warmer temperatures. High pressure tonight will allow for clear skies and light winds.
632 AM EDT SUN SEP 25 2016 An upper-level ridge will continue to build east into the area through Sunday. A cold front will approach from the north Sunday and stall across the area Monday providing a focus for scattered showers and thunderstorms.
The flow aloft this morning is light east to southeast, and then becomes southerly over the wrn two-thirds of the forecast area by afternoon as the upr level ridge shifts a bit eastward. and then spread ovr the high valleys. High temps today wl again be above average with 90s over the sern plains and 80s over the high valleys. S upper trough begins to move slowly eastward Sunday, with southerly low/mid level flow continuing to bring moisture northward across the region.
409 AM CDT SAT JUN 11 2016 An area of low pressure currently over eastern MT/WY will be the dominant weather feature through the short term portion of the forecast. Moisture pooling along a warm front should keep afternoon RH values from falling into the 30 percent range where the winds are the strongest. While the cold front will have plenty of instability to work with.
323 AM EDT SAT JUN 11 2016 Warm front creeps northeast of the area Saturday. Cold front Sunday.
Today, a 590 dm ridge will prevail across the Central Plains. At the surface, High Plains lee troughing will continue. With such a strong ridge in place, am quite dubious for any convection this activity and evening. It will be another breezy day with the continued lee troughing and moderate pressure gradient across the the forecast district. Sunday: The ridge shifts off to the east with only a few meters of 500-hPa height falls. A lee through/cold front intersection is expected across northeast Colorado into northwest Kansas.
A cold front will move through the area Sunday afternoon.
An upper level low over King county early this morning will move east of the Cascades by this afternoon. A weak ridge of high pressure offshore will move through the area later tonight and Sunday.
637 AM EDT SAT JUN 11 2016 Westerly flow between high pressure to our south and an approaching cold front to our north will bring hot temperatures to the region today. The cold front will sag south into the area tonight, continuing slowly south across the Ohio River valley on Sunday.
A high pressure ridge prevails across Indiana while active convection continues in Iowa associated with nearby surface boundary supported by weak wave aloft. Upper ridging and northwest flow will maintain warm weather early in the week while an approaching trough flattens the ridge and settles temperatures back closer to normal mid-week onward. Threats for rain are minimal but not zero with upper ridge nearby but an upper trough approaching by midweek will improve chances for at least scattered diurnal convection midweek. By late week the approaching trough closes off across the upper Midwest and settles towards Indiana by late week improving rain chances further. Will thus add this low chance pop for late afternoon from Lafayette to Kokomo.
350 AM EDT SAT JUN 11 2016 A strong area of low pressure will approach from central Canada today and tonight and cross the area on Sunday.
355 AM EDT SAT JUN 11 2016 Atlantic high pressure will prevail today while a trough of low pressure strengthens inland.
446 AM CDT SAT JUN 11 2016 Line of thunderstorms developed after midnight east of surface trof, in area marked by positive vorticity advection in very weak flow aloft. On Sunday, have increased pops in western sections, as surface trof is expected to sharpen near the New Mexico state line.
419 AM EDT SAT JUN 11 2016 Warm front creeps northeast of the area today. Cold front Sunday.
Upper level low, with one section over northern Washington and the other off of the coast of southern California, will continue to split over the next 36 hours. Temperatures will be cool and below normal today from the cold front that moved through yesterday, but Sunday should be closer to normal.
241 AM CDT SAT JUN 11 2016 A dome of high pressure will remain anchored over the Quad State today, and allow us to again heat up into the 90s with humidity creeping up as well. The upper ridge will actually migrate overtop the Mississippi valley with time this weekend, lingering the heat and humidity into the early week.
A large sprawling ridge was in place over the central half of the nation with troffiness over the eastern and western coastal areas. Within the ridge are two slow moving cold core features that will play a role in the weather over our area in the short term. The second feature is another cold core which has been cutoff over north TX as it tries moving through the ridge.
Aforementioned feature is embedded within larger synoptic scale upper ridge which encompasses much of the central/southeastern states. Temperatures will remain above normal as upper ridge continues to dominate the overall weather pattern.
Mid to upper level ridging continues to build from the southeast GOMEX. This along with a trough over the western Atlantic is keeping westerly flow at these levels. At the surface, winds are southerly with the high centered off the southeast U. Highs will mostly be in the lower 90s inland and mid to upper 80s along the coast.
As the cold front slowly progresses eastward through the Northern Rockies, patchy valley fog, scattered showers and isolated thunderstorms persist ahead of the front over western Montana and parts of north-central Idaho this morning. Breezy wind gusts of 20-30 mph are likely to develop again this afternoon before the gradient weakens throughout the day and the cold front weakens.
409 AM EDT SAT JUN 11 2016 Warm front creeps northeast of the area Saturday. Cold front Sunday.
406 AM CDT SAT JUN 11 2016 Another hot one is in store for the forecast area on Saturday as the mid level ridge remains in place. The mid 60 Tds along with temperatures in the lower 90s will contribute to heat index values approaching 100 degrees this afternoon. Expect a nearly carbon copy for Sunday, with the mid level ridge firmly in place, contributing to subsidence and more warm temperatures. Once again, with humid conditions and temperatures in the lower 90s expect heat index values to rise into the upper 90s to perhaps 100 degrees in some locations.
626 AM EDT SAT JUN 11 2016 A strong area of low pressure will approach from central Canada today and tonight and cross the area on Sunday.
240 AM EDT SAT JUN 11 2016 High pressure south of the area will bring unseasonably warm conditions across the region to begin the weekend. A cold front will sag south across the area late Saturday night into Sunday morning. High pressure will then build in. An east-west oriented cold front will drop south into the forecast area Saturday night.
351 AM MDT SAT JUN 11 2016 High pressure aloft is shifting to the east, allowing us one more day with sufficient moisture for scattered afternoon and evening thunderstorms. By Sunday an approaching upper trough will begin to push the moisture eastward which will result in the best chance for storms east of the Rio Grande.
SHORT TERM (Today through Sunday): Broad 500 mb troffing will prevail over much of the Lone Star state throughout the weekend. Short term model guidance tries to form up a closed 500 mb low over the central and northern portions of the state later tonight into Sunday with this closed low starting to move up to north or northeast on Sunday. Will maintain afternoon pops in the 20 to 30 % range for today and Sun as enough instability and mid level troffiness could help along some isold/sct afternoon conv.
351 AM CDT SAT JUN 11 2016 Going to be another warm day with high temps a couple of degrees warmer than yesterday. Convection early this morning continues to wane in eastern IA and convective models continue to diminish the pcpn as it moves south toward the much warmer airmass in MO and parts of IL.
112 AM CDT SAT JUN 11 2016 An upper level ridge will slide across the area tonight through Saturday night. Temperatures will remain on the hot side as the ridge moves to the east. The upper ridge is moving to the east and an upper level wave approaches the area.
Upper level ridge axis will push east of the forecast area tomorrow with increasing chances for thunderstorms. By Sunday slight cooler temperatures will move into the forecast area while chances for thunderstorms will continue to increase with thunderstorms likely reaching into the Nebraska Panhandle.
353 AM EDT SAT JUN 11 2016 Westerly flow between high pressure to our south and an approaching cold front to our north will bring hot temperatures to the region today. The cold front will sag south into the area tonight, continuing slowly south across the Ohio River valley on Sunday.
404 AM CDT SAT JUN 11 2016 There are a few showers and thunderstorms early this morning mainly along/south of the Pecos River and toward the higher terrain of the Big Bend Area, aided by a nocturnal low-level jet. Under the continued influence of an upper ridge, near to slightly above normal temperatures are expected again this afternoon. An upper low will come ashore over the western CONUS by Sunday, resulting in the ridge axis shifting further to the east of the area. Despite the eastward shift of the ridge, conditions Sunday look to be similar to today with diurnally driven thunderstorms as well as slightly warmer above normal temperatures.
1120 PM MDT FRI JUN 10 2016 Early afternoon WV imagery and RAP analysis indicates ridging extending across Colorado with axis centered across our CWA. Saturday: Upper level ridge shifts east while trough deepens in this west.
401 AM CDT SAT JUN 11 2016 (Today and tonight) A closed upper-level cyclone is spinning over the Big Country early this morning, trapped beneath the mid-level ridge building north into the Central Plains. Temperatures will be near to just slightly above seasonal norms tonight, with overnight lows in the lower 70s.
An upper level closed low is currently spinning over he Washington coast. This low is generating some late day instability showers over the Cascades and eastern mountains. The low will drift northeast on Saturday and be over northeast Washington and on its way into Canada. An upper trough axis will move across the region Saturday A few stray showers over the mountains.
Models continue to indicate dry and stable air will preside across much of Se Ga and coastal Ne Fl along the ridge axis. Both the surface and upper ridge gets shunted south of the area as a deep layer trough amplifies across the eastern U. Afternoon max temps will be a couple of degrees warmer and with higher moisture levels.
420 AM EDT SAT JUN 11 2016 A warmer and more humid day. Shower and thunderstorm chances will increase later today and tonight as a cold front approaches. Obviously the lower levels will moisten up quickly as surface dewpoints rise well into the 60s, but models are in pretty good agreement that above 5000 or 6000 feet, the atmosphere will remain dry. However, in addition to the lower levels warming, the upper levels will do the same with the 850mb temps pushing +20c and 700mb temps pushing +10. Cold front finally crosses the area tonight, and pops have been timed with its passage. A much drier and cooler air mass will overspread the entire area on Sunday.
Water vapor imagery highlights a mean layered ridge across the Western Atlantic and the Gulf of Mexico. An upper level low is moving west into Central America. Winds are tending to the southeast to south at 5 to 10 knots, which would place a ridge axis to our north.
127 AM EDT SAT JUN 11 2016 VFR conditions will continue through the TAF period as high pressure maintains its influence across the region.
Much-anticipated cold front has entered western Idaho and should be passing through during the mid-day, causing highs to occur early today and then cooling during the mid-afternoon. Much less chance of a shower threat for Sun, then a better chance for Mon afternoon/evening when a weak trough crosses through eastern Idaho during the afternoon. After the first cold front today, the continued warming southwesterly flow allows temperatures to warm strongly from the 60s today to 70s by Sun and near 80 by Mon. Present indications are that a closed low will set up off the OR-WA coast and stream moisture through northern CA, eastern OR, and northern/central ID. A cold front will arrive today and produce a few showers and thunderstorms. A cold front will arrive today. Expect some showers and thunderstorms along with noticeably cooler temperatures.
640 AM EDT SAT JUN 11 2016 A warmer and more humid day. Shower and thunderstorm chances will increase later today and tonight as a cold front approaches. Still some uncertainty regarding activity later today but latest model runs have been fairly consistent in showing convection largely held back by warmer air aloft. Obviously the lower levels will moisten up quickly as surface dewpoints rise well into the 60s, but models are in pretty good agreement that above 5000 or 6000 feet, the atmosphere will remain dry. However, in addition to the lower levels warming, the upper levels will do the same with the 850mb temps pushing +20c and 700mb temps pushing +10. Cold front finally crosses the area tonight, and pops have been timed with its passage. A much drier and cooler air mass will overspread the entire area on Sunday.
Hot summer weather is expected this weekend as strong high pressure over the southeastern states pushes warm and moist air into central Indiana on southwesterly winds. A cold front will push throughout northeastern United States on Saturday night. bringing a glancing blow of cooler air to Central Indiana for Sunday. GFS and NAM continue to suggest the strong ridge axis over the middle mississippi river valley building east across the indiana on Saturday. pushing an associated cold front across the Great lakes and into Indiana by Sunday morning.
251 AM CDT SAT JUN 11 2016 Cluster of convection continues across eastern Iowa and to the southwest in the panhandles area of the high plains, while the forecast area remains warm and dry. Upper ridge continues to move eastward over the area with weak upper low over Oklahoma and north Texas moving very little through Sunday.
648 AM EDT SAT JUN 11 2016 Atlantic high pressure will prevail today while a trough of low pressure strengthens inland.
202 AM EDT SAT JUN 11 2016 High pressure will prevail tonight before moving offshore this weekend.
751 PM CDT Mon Mar 27 2017 MVFR/IFR cigs/vsbys to return to the region overnight, as low level moisture increases ahead of an approaching trof. Frontal boundary to linger along the interstate 20 corridor through Tuesday night before lifting up as a warm front.
743 PM EDT Mon Mar 27 2017 Low pressure will move up the Ohio Valley tonight. High pressure will build in for the middle of the week.
922 PM EDT Mon Mar 27 2017 Rain is expected tonight and Tuesday with crossing low pressure. Dry weather is expected with mid week high pressure before low pressure returns rain to the forecast by late week. Low pressure is progged to track from the MS/TN Valley to the OH valley by Tuesday morning. As high pressure moves over the Great Lakes, cooler and drier air will enter the region. Even this cooler air will still be slightly above normal.
849 PM EDT Mon Mar 27 2017 High pressure over the northeast will slowly sink southwest towards South Florida tonight. High pressure remains in control through the remainder of the week.
1209 AM EDT Tue Mar 28 2017 A series of weak low pressure systems from Southern Quebec will move east crossing just south of the region overnight through Tuesday night.
1009 PM EDT Mon Mar 27 2017 A series of weak low pressure systems from Southern Quebec will move east crossing just south of the region tonight through Tuesday night.
754 PM EDT Mon Mar 27 2017 Atlantic high pressure will weaken through Tuesday.
Additional isold tsra wl be psbl tonight north of I-20 as a weak cold front drifts into the area.
Showers have mostly diminished across the region this evening as the upper level trough exited.
806 PM EDT Mon Mar 27 2017 A series of troughs will move through the area through early Tuesday and possibly trigger some showers and a few thunderstorms. A cold front will move through the area Tuesday night.
915 PM EDT Mon Mar 27 2017 Low pressure will track across southern New England before exiting the coast this evening.
616 PM CDT Mon Mar 27 2017 The center of the low pressure system that brought rain late this weekend and earlier today has shifted eastward to eastern MO early this afternoon with just a few remnant showers near Fort Wood and Rolla. Large swath of cloud cover extending around the back side of the low pressure system will keep the area socked in with clouds through much of the evening and overnight hours before clearing out some on Tuesday. We still expect a break from precipitation to continue into Tuesday with upper level ridging building over the area.
501 PM MDT Mon Mar 27 2017 Main forecast concern continues to be the strong upper level trough currently over the Great Basin. It still is expected to move southeast across the four corners region and into New Mexico tonight and Tuesday, with midlevel disturbances rounding the trough and moving north/northwest on the eastern edge of the trough. Sfc winds/mslp model analysis favor the inverted trough slightly more over the Laramie Valley for best sfc convergence and upslope flow though, but the differences between models are just enough to create a few degrees temperature difference across the area which will affect actual snow rates and accumulation, and thus resultant impacts. Less snow is forecast elsewhere in the high country (around 2-4") so think that can be handled with an Advisory later on.
1100 PM MDT Mon Mar 27 2017 An upper level low will slowly slide eastward into the Four Corners region tonight then into portions of the Southern Rockies tomorrow. This upslope flow in addition of increased moisture in the low to mid levels will lead to increasing cloudiness tonight with mostly cloudy skies through tomorrow. As for temperatures, lows tonight look to dip into the lower 40s with highs tomorrow only reaching to around 50 degrees due to the mostly cloudy skies and precipitation.
/issued 849 PM EDT Mon Mar 27 2017/ High pressure over the northeast will slowly sink southwest towards South Florida tonight. High pressure remains in control through the remainder of the week.
Over the far north central a little freezing rain/sleet will not be out of the question, although chances for this remains quite low. High res models have persistently shown the low cigs/fog across the north developing south with time tonight with the exception of the southwest on the other side of the frontal zone. Also, dry air associated with high pressure over northern/central Manitoba will eventually work into the area tonight eroding the areas of fog over my northeastern counties.
845 PM EDT Mon Mar 27 2017 Dry and stable conditions courtesy of high pressure from the Atlantic extending southwest across the central Florida peninsula lead to a warm and dry day across the entire forecast area with temperatures in the lower to mid 80s. Little change is expected during the next few days as high pressure sinks south across the region with warm and dry conditions continuing. High pressure will provide tranquil boating conditions over the Gulf waters the few days with light east to southeast winds overnight and during the morning hours with a weak pressure pattern favoring an onshore sea breeze component developing along the coast each afternoon.
The remnants of a cold frontal boundary (now positioned just north of the CWA across central Texas) is not expected to do much but wash out.
845 PM EDT Mon Mar 27 2017 A cold front will cross the area late Tuesday.
825 PM EDT Mon Mar 27 2017 A series of weak low pressure systems from Southern Quebec will move east crossing just south of the region tonight through Tuesday night.
624 PM CDT Mon Mar 27 2017 High pressure will be the dominant feature tonight as it extends from south central Canada through the eastern plains. But deeper moisture will then move into our area ahead of the next upper low producing increasing cloud cover from west to east. However with the continued east to southeast fetch of low level air, the lowest layers may remain a bit dry for much of our forecast area, so precip chances will erode in our western zones.
1201 AM EDT Tue Mar 28 2017 Rain is expected tonight and Tuesday with crossing low pressure. Dry weather is expected with mid week high pressure. Low pressure is progged to track across the Upper Ohio/Mid Atlantic Regions today. Showers will thus persist until the exiting system pulls a cold front across the area during the afternoon and early eve. As high pressure moves over the Great Lakes, cooler and drier air will filter over the region.
1103 PM CDT Mon Mar 27 2017 MVFR/IFR cigs/vsbys to return to the region overnight, as low level moisture increases ahead of an approaching trof. Frontal boundary to linger along the interstate 20 corridor through Tuesday night before lifting up as a warm front.
1033 PM EDT Mon Mar 27 2017 Low pressure will move up the Ohio Valley tonight. High pressure will build in for the middle of the week.
515 PM MDT Mon Mar 27 2017 Latest analysis shows and upper ridge over the central CONUS and the Canadian prairie provinces with an upper trough over the western CONUS and British Columbia. It is this upper trough that will affect the weather over the forecast area over the next few days.
755 PM EDT Mon Mar 27 2017 An area of low pressure will move along or just south of the Mason-Dixon line late tonight and Tuesday.
1126 PM CDT Mon Mar 27 2017 Large swath of cloud cover extending around the back side of the low pressure system will keep the area socked in with clouds through much of the evening and overnight hours before clearing out some on Tuesday. We still expect a break from precipitation to continue into Tuesday with upper level ridging building over the area.