Aikyam-Lab/Synoptic-Bench huggingface dataset:
A cold front is still just west of the Arkansas/Louisiana line, but this front will progress eastward this evening. The cold front has pushed S into Srn Grant and La Salle Parishes. A lake wind advisory areawide is set to expire at 5 pm, and believe these approaching winds will subdue just enough with setting sun to not warrant a reissuance of the LWA but is bringing clear skies to that portion of the cwa and allow overnight lows to fall into the lower 40s across the river valley region. The actual cold front with this system arriving late tomorrow.
745 PM EST Mon Nov 28 2016 A broad storm system centered over the upper plains and midwest will push a cold front through the commonwealth on Tuesday. A second cold front will follow for midweek. More rain and mild temperatures will occur before cooler air and lake effect snow showers return for the end of the week. Temps may rise late tonight as a strong srly LLJet moves in just ahead of the cold front. Downstream ridge over the western Atlantic and New England does not move much and pumps up a little.
Strong pre-frontal trough expected to push across the Mississippi Valley this afternoon, and across western and middle Tennessee overnight. Strong winds will occur ahead of the trough, and have left mention of low-level wind shear in the CKV and BNA TAFs for this evening. After the front passes, conditions are forecast to return rather quickly to VFR, with southwest surface winds becoming gusty on Tuesday ahead of a cold front, which will be moving out of the Plains into the Mississippi Valley.
Southwest and west surface winds will shift to northwest with the passage of a cold front late this evening and tonight. /Issued 251 PM CST Mon Nov 28 2016/ One upper trough will push across the Panhandles tonight and another will move across the forecast area by late Tuesday and Tuesday night. A cold front will move through the Panhandles late tonight and early Tuesday with dry conditions continuing through at least the middle of the week.
544 PM CST Mon Nov 28 2016 The cold front is just now entering northwest Arkansas and the rain has exited the eastern part of the state.
This feature has created a very strong pressure gradient across the Delta from the low to the south into NW Mississippi. The main upper trough remains to the west and the Mid- South will be between systems. Mild southerly flow will result in much above normal temperatures in the lower 70s with a good deal of sunshine.
538 PM CST Mon Nov 28 2016 Weak cold front is pushing into northeast and central Missouri this afternoon with generally clear skies behind it.
639 PM CST Mon Nov 28 2016 Current impulse rotating around upper low impacting mainly the north half of the forecast area. Upper low drifting a bit west now toward Cooperstown. Radar has been showing an area of rain on north and west side of the upper low continuing to move west and northwest with additional rain spreading north to the east of the upper low attm. 850 mb temps remain a bit above zero north of the upper low into northeastern ND back toward DVl basin. Tuesday will see the moisture being cut off from the upper low and a transition to more drizzly weather with patches of wet snow. Temps above freezing so again little impacts anticipated.
Diminishing showers and decreasing sky cover as high pressure builds across the area overnight. Subfreezing overnight low temperatures over Trinity County and interior Mendocino County.
this wave is forecast to move through the CWA with a wind shift out of the northwest and cooler temps behind the boundary.
The cold front associated with it is slow-moving, while plenty of warm air and moisture streams out of the south up and into Central Illinois. Tomorrow will be a much quieter day, with the skies clearing and temperatures a bit warmer with all the sunshine. The main cold front associated with the weather system that brought precip to the area will finally move through the CWA Tuesday night. High pressure will finally build into the region at the end of the week and into Sat. Due to the differences being stark, best to keep a blend of the models going that far out, keeping pops on the low side in the chance category.
This is especially true along the east-facing slopes of the ridges, where a cold air damming-type setup is in place, with a few readings in the 30s in Garrett County.
On the synoptic scale, colder and drier nnwly flow aloft tonight ahead of ridge along the coast.
In the middle and upper levels,(700-200 mb) latest satelitte imagery overlaid with model streamline analysis as of 800 pm depict an expansive full latitudinal cold core trough encompassing much of the Central and Western CONUS. Downstream of that, the center of a deep and warm middle and upper level anticyclone is positioned over the Western Caribbean Sea just to the east of Belize, but an attendant deep middle and upper level ridge extends northwards across the Eastern United States up to Eastern Ontario. Well east of that, the center of near 1025 mb surface ridging is located across the Western Atlantic near 35 North 71 West. Winds across the shallower cooler Gulf waters north of the Middle and Lower Keys.
1043 PM PDT SAT JUN 25 2016 The upcoming week be much warmer with summer-like conditions.
448 AM EDT SUN JUN 26 2016 High pressure off the east coast will continue the very warm but dry weather for our area today into this evening. A low pressure trough will move through the region Monday and Monday evening with a few showers and storms.
High pressure is building into the Pacific Northwest today so temperatures will be warmer and above average. Warm temperatures of around 10 degrees above average can be expected each day this week due to high pressure planned to build over north central Idaho and western Montana.
440 AM EDT Sun Jun 26 2016 High pressure to remain in control of the weather across the North Country through Sunday evening.
Latest predawn surface analysis showed a 1018 mb ridge axis over the cwa. Little change is expected Today before the mid level ridge breaks down Monday.
The active line of showers and thunderstorms are lined up along an advancing cold front. Tonight will be quiet and much cooler.
SHORT TERM (Today through Monday): Upper low continues to drift northward across the Big Bend Region, while moisture remains dense enough to allow streamer showers to pop up to the southeast across the Gulf.
Dry and even warmer today as strong high pressure remains over the area and warm air advection will be in full tilt as a strong southerly flow takes over. Shower and thunderstorms chances return later tonight as a weak and slow moving cold front approaches and drags through the area.
The major concern for this afternoon/evening, as has been well- advertised, is the threat for more severe storms as the primary upper wave and approaching cold front interact with a very unstable airmass with sufficient deep layer shear for supercells. As a closed upper low moves into Ontario, one more cold front will move through the forecast area. This is in response to an upper level trof dropping southeastward through the forecast area.
122 AM EDT SUN JUN 26 2016 High pressure will dominate the weekend before a cold front approaches the area Monday. High pressure should return by midweek. There could be some patchy fog in the lower Susq, but it will mix out quickly on Sunday. Another great early summer day is in store Sunday as high pressure slips off to our east. Highs will reach into the 80s, even over the higher elevations. Dewpoints will dip into the 50s keeping the humidity on the lower side. Could see one area of scattered precip slip through followed by a second line later in the day with passage of the cold front.
409 AM EDT SUN JUN 26 2016 High pressure will bring one more dry day before a frontal system enters the region Monday. High pressure will return by midweek. High pressure will bring one more dry warm day after the some local fog patches burn off following sunrise.
316 AM EDT SUN JUN 26 2016 High pressure remains in control through Monday.
527 AM EDT SUN JUN 26 2016 High pressure will bring one more dry day before a frontal system enters the region Monday. High pressure will return by midweek. High pressure will bring one more dry warm day after the some local fog patches burn off following sunrise.
244 AM MDT SUN JUN 26 2016 Upper low is over Manitoba, with zonal flow across the western CONUS. With high pressure at the surface, winds are light and variable. An upper ridge will sharpen over the western CONUS today, which will begin to put the northern plains under northwest flow for the next several days. A backdoor cold front will slide into the region tonight, shifting light winds to the northeast. Monday will be slightly cooler, with highs in the mid 70s to mid 80s. With high pressure draped over the region, generally a dry and mostly sunny day is expected. Upper ridge axis will remain to our west through the week with generally W/NW flow through the nrn plains.
139 AM EDT SUN JUN 26 2016 Warm and dry weather will continue this weekend as high pressure controls our weather.
414 AM CDT SUN JUN 26 2016 Upper air analysis shows upper low between Del Rio and Midland TX and upper level ridge over the Arklatex. Surface analysis at 08Z showed weak high pressure over much of SE Texas allowing for near calm winds. Today the upper level low should meander across west Texas with the upper ridge slowly weakening over the Arklatex as ridging builds over the 4 corners region. Ascent from the upper low and subsidence from the ridge will again fight it out over much of SE and E Texas today.
Upper level ridge will continue to build into the area. Warmer temperatures across the forecast area by about 10 degrees today, and about 10 more degrees of warming expected for Monday.
145 AM EDT SUN JUN 26 2016 High pressure will remain in control of the region through Monday.
325 AM CDT SUN JUN 26 2016 (Today thru Tue) Today's weather map will feature and upper high over the Arklatex with a ridge axis extending eastward across the mid Atlantic states. This is due to a weakening eastward moving trough. Tonight, the aforementioned upper high will shift westward across the 4 corners area.
647 AM EDT SUN JUN 26 2016 Warm and dry under high pressure today. Cold front Monday.
temps will turn slightly cooler than normal this week. with 1 or 2 days of much cooler than normal. setting up an Ern trof/Wrn ridge thru at least next Sat and probably thru day 10 (Tue Jul 5th).
144 AM EDT SUN JUN 26 2016 Warm and dry under high pressure today. Cold front Monday.
346 AM EDT SUN JUN 26 2016 High pressure off the east coast will continue the very warm but dry weather for our area today into this evening. A low pressure trough will move through the region Monday and Monday evening with a few showers and storms.
The 1 pm EDT regional surface analysis showed a frontal system across north GA and SC, and a weak trough to its south across central GA. For the first time in several days, scattered thunderstorms entered our forecast area, as they developed in a low layer convergence zone just south of the central GA trough. In general, the upper level pattern across the Southeast will consist of a de-amplifying ridge as a northern stream waves moves into the Upper Mississippi Valley. At the surface, a frontal boundary was analyzed across central SC and northern GA amid high pressure.
347 AM EDT SUN JUN 26 2016 Broad upper level ridge remains in control of the weather pattern in South Florida for most of the forecast period. High temps will range between the low to mid 90s today with heat index values of 101 to 105 over Collier county.
351 AM CDT SUN JUN 26 2016 Winds will stay breezy/gusty today as low pressure moves east across southern Canada. 850mb temps at 00Z this evening are actually a degree or two warmer than what they were at 00Z last evening, so highs will be fairly similar to yesterday, or even a tad warmer in some locations. Raised highs from previous forecast and sided towards the highest guidance members once again as it is largely too cool across the region. This will bring cooler temperatures on Monday with highs dropping down into the 70s to low 80s.
405 AM EDT SUN JUN 26 2016 High pressure will extend from the Northeast coast southwest through the Mid-Atlantic for the remainder of the weekend.
315 AM CDT SUN JUN 26 2016 An upper level ridge is centered over Louisiana this morning, and a TUTT low is located over Fort Stockton in West Texas. On Monday, the TUTT will remain near the Big Bend area of Texas, and the upper level high will reorganize to our northwest. The upper level high will remain centered to our northwest through at least the middle of the week keeping North and Central Texas in north flow aloft. By the end of the week, the upper level ridge may shift southeast over the state of Texas, changing our upper level flow pattern to a zonal pattern.
630 AM EDT SUN JUN 26 2016 High pressure will extend from the Northeast coast southwest through the Mid-Atlantic for the remainder of the weekend.
335 AM CDT SUN JUN 26 2016 The PAH forecast area will continue to be under the influence of a mid level ridge today, meaning a warm, moist, unstable atmosphere. As mid level heights continue to fall tonight, and drier, cooler air wedges under the existing airmass, PoPs will peak at around 50% in the northern half of the PAH forecast area. The remainder of the short term will be dry and steadily cooler under northwesterly flow aloft.
339 AM CDT SUN JUN 26 2016 The upper ridge centered over the Arklatx this morning will shift west becoming centered over the 4 corners region Monday and remain over the west the rest of the week. An upper low wandering up from Mexico today and across the region will result in increased rain chances today into Monday.
348 AM EDT SUN JUN 26 2016 Broad upper level ridge remains in control of the weather pattern in South Florida for most of the forecast period. High temps will range between the low to mid 90s today with heat index values of 101 to 105 over Collier county.
157 AM EDT SUN JUN 26 2016 High pressure over the eastern Great Lakes and New England will move slowly east to the coast by Sunday morning. This will allow A cold front to move east across the area Sunday night.
504 AM CDT SUN JUN 26 2016 Upper ridging will remain ovhd today expect will begin to gradually weaken with deep moisture on the increase. As the ridge begins to slowly shift wwd early this week, nw flow pattern to set up with convection to increase across mainly se OK and sw AR where upper flow is stronger, while more isold and diurnal convection expected to approach southern portions of the area durg the aftn in the form of a sea breeze.
233 AM PDT SUN JUN 26 2016 The upcoming week be much warmer with summer-like conditions.
1202 AM CDT SUN JUN 26 2016 At 2 pm, surface analysis had a cold front extending from far northwest MN through eastern SD. Looking for storms to fire quickly along the cold front across northwest MN into eastern SD this afternoon, then move southeast into the region by 8 pm (from north central WI into southeast MN/northeast IA). Sunday night looks to be a comfortable night with lows falling into the upper 50s to the lower 60s.
431 AM EDT SUN JUN 26 2016 High pressure remains in control through Monday.
623 AM EDT SUN JUN 26 2016 High pressure ridging into the forecast area from the northeast will weaken Monday. Moisture will increase Monday night ahead of a cold front.
322 AM CDT SUN JUN 26 2016 Upper level ridge remains in place across the southern gulf states from Texas to Florida. Subsidence from this ridge has kept the area dry for several days but it will begin to weaken slightly today as upper trough tracks across southern Canada, extending south across the upper Mississippi Valley.
303 AM EDT SUN JUN 26 2016 High pressure across the eastern Tennessee Valley early this morning is promoting a mostly clear sky and calm conditions. the mostly clear sky this morning should allow the atmosphere to warm up into the low to mid 90s once again. Upper ridge breaks down for Monday as upper troughing builds over the Great Lakes.
1114 PM MDT SAT JUN 25 2016 The cold front that moved through NE Utah and NW Colorado last evening stalled somewhere on the Bookcliffs or near the I-70 corridor this morning.
Current water vapor imagery shows a high pressure ridge off the Oregon/Washington coast. Look for high pressure ridging to build in across our area today through Monday bringing a return to above normal temperatures and continuing dry conditions.
Frontal boundary north of the area weakens, while Atlantic ridge remains east of Florida. This will produce very light winds in the low levels with sea breeze boundaries developing along both coasts and steadily moving inland through the afternoon. Lows will continue to range from the low to mid 70s. Atlantic ridge extends westward into mid to late week, with ridge axis remaining south of central Florida as another weak front moves into the southeast U.
332 AM CDT SUN JUN 26 2016 (Today and Tonight) An upper low has pushed north of the Texas Big Bend region this morning and is now centered over western Crockett county. The upper level low will begin to weaken through the overnight hours with rain chances ending over the eastern half of the forecast area. Afternoon highs today will be a few degrees cooler than yesterday, generally around 90 degrees, given good cloud cover associated with the upper Level disturbance.
611 AM EDT SUN JUN 26 2016 High pressure remains in control through Monday.
Upper level ridging will provide hot weather across the region through much of the upcoming week. For this afternoon, looking for highs to reach the upper 90s across western Nevada with warmer locations such as Lovelock and Fallon approaching 100.
401 AM EDT SUN JUN 26 2016 High pressure will remain centered along the mid Atlantic coast today and tonight, and will slide off the coast on Monday.
The low level frontogenesis will not be strong like yesterday, so it is much more unclear how the evolution will be after convective initiation, and exactly which areas will see the greatest chance for heavy rainfall. The lack of wind flow in the lower troposphere (and even the mid troposphere) will significantly limit severe weather and will probably preclude MCS development.
426 AM EDT SUN JUN 26 2016 High pressure will remain centered along the mid Atlantic coast today and tonight, and will slide off the coast on Monday.
317 AM EDT SUN JUN 26 2016 Warm and dry under high pressure today. Cold front Monday.
630 AM EDT SUN JUN 26 2016 High pressure ridging into the forecast area from the northeast will weaken Monday. Moisture will increase Monday night ahead of a cold front.
Some mid level echoes associated with the upper low are also present across NW and central TX right now. aforementioned The mid level ridge will shift south and west by late tomorrow night leading to northerly flow over OK.
Mostly clear skies prevail across the region this afternoon as high pressure builds into California. Hot weather is expected for the next several days as high pressure builds from the Desert Southwest.
305 AM CDT SUN JUN 26 2016 Cold front over eastern Nebraska/western Iowa will drop down toward the I-70 corridor by this evening. Despite the passage of the weak cold front today and tonight, 850 hPa temps will remain near 20 C which will still support highs near 90 degrees both today and Monday.
Synoptic Setup: A large area of hot high pressure sets over the Desert Southwest and lower Intermountain West. A weak ridge rides north out of this airmass through Idaho and Alberta. Mostly zonal flow runs from the Pacific Northwest through the High plains of Montana. A weak remnant trough sets over southern Saskatchewan. Farther west a large synoptic trough sets over the Gulf of Alaska. Today: The remnant trough to the north will drop into the Dakotas and generate enough instability as it clips northeast montana to bring about some showers and thunderstorms during the afternoon and evening hours.
127 AM EDT SUN JUN 26 2016 High pressure tracks north of the area through Sunday, then slides off the coast Monday.
353 AM CDT SUN JUN 26 2016 The upper low that had been hanging out south of the border the past couple of days has now edge northward and was spinning over Texas territory to our south. Actually precipitation evolution is somewhat in question given the rather weak forcing, but think the best rain/storm chances will initially be across the south and southeast zones this morning where the deepest moisture and greatest influence from the upper low will be. The upper low is then progged to gradually open up into an inverted trough and begin a slow westward journey tonight as upper ridging begins to amplify near the Four Corners. The weakening inverted trough is forecast to drift west or southwest across southwest Texas on Monday, while the upper ridge begins to build from the 4-corners region southeast into West Texas.
243 AM EDT SUN JUN 26 2016 High pressure off the east coast will continue the very warm but dry weather for our area today into this evening. A low pressure trough will move through the region Monday and Monday evening with a few showers and storms.
High pressure ridging into the forecast area from the northeast will weaken Monday. Moisture will increase Monday night ahead of a cold front.
646 AM EDT SUN JUN 26 2016 High pressure off the east coast will continue the very warm but dry weather for our area today into this evening. A low pressure trough will move through the region Monday and Monday evening with a few showers and storms.
350 AM EDT Sun JUN 26 2016 High pressure will extend from the Northeast coast through the Mid- Atlantic for the remainder of the weekend.
Downstream from this disturbance we find longwave ridging in place across much of the eastern CONUS. This ridging extends southward to cover the Gulf of Mexico and Florida Peninsula. the subtropical ridge axis continues to weakly remain across our region.
High pressure ridge continues to strengthen over the Great Basin region which allowed temperatures to climb even further into the 90s today across much of Nevada.
347 AM PST Tue Nov 22 2016 High pressure will provide dry weather today.
TFJ Synoptic Setup: A series of progressive ridge/trough couplets/waves will move through the area over the length of the short term. As of this morning the first ridge axis is exiting through the Dakotas. The first Trough axis over Western Montana. the second ridge axis runs up the Pacific Northwest Coast. the second trough lies off the coast over the far northeastern Pacific. This low has a cold front and line of low clouds trailing it to the west which will drop south across the international border late this morning. By wednesday afternoon the next ridge will move through and may bump most of the low cloud coverage out while new higher clouds stream around the edges of the ridge.
621 AM EST Tue Nov 22 2016 High pressure will bring dry weather to the area through this evening. However, the high will depart to the east tonight, allowing an area of low pressure to track toward the southern Great Lakes for the middle of the week. A trailing cold front will approach Wednesday afternoon, eventually crossing the region by late Wednesday night.
Ridging will provide increased subsidence today keeping dry conditions in place however low level moisture trapped under the inversion along with continued low-level northwesterly flow should maintain cloud coverage, especially north and east of Pittsburgh. Cloud coverage will diminish tonight as ridging continues to build over the region and warmer air moves in aloft. This along with lighter surface winds will allow for a strong radiational cooling night with temperatures falling to the low 20s / upper teens. Temperatures will climb back up to seasonal levels and rain chances will increase over the course of the afternoon ahead of the warm front. Temperatures will drop little Wednesday night with showers and substantial cloud coverage as the warm front crosses the region.