Aikyam-Lab/Synoptic-Bench huggingface dataset:
601 AM CST Fri Nov 25 2016 /12Z TAFS/ A cold front has moved south to the Interstate 10 corridor. /issued 346 AM CST Fri Nov 25 2016/ (Today and Tonight) A cold front is currently making its way through the area early this morning, and has just passed though the San Angelo area. With lots of cloud cover and possibly scattered showers behind the cold front today, temperatures will be cooler with highs only reaching the upper 50s to lower 60s. Tonight, those same clouds will keep temperatures from dropping off too much, keeping lows in the low to mid 40s for the most part.
519 AM CST Fri Nov 25 2016 Rather uneventful weather is expected across the TX and OK Panhandles through Saturday as an upper level ridge of high pressure dominates the region.
546 AM CST Fri Nov 25 2016 A very weak system/dry cold frontal boundary will continue to push eastward through the region this morning. Temperatures will be just a few degrees cooler today across the area as a very slightly cooler air mass advects into the region. Some localized areas of fog may be possible, especially closer to the larger lakes bodies where water temperatures are still in the lower 60s.
This lowered our overnight lows with teens and lower 20s many locations making for a frosty morning. Tonight upper level ridging remains over the forecast area with a weak pressure pattern.
It should only be little warmer than what we are seeing this morning. the upper ridge axis will shift to the east with an increasing southwesterly flow aloft developing. A surface lee trough develops during the day which should help enhance the low level downslope warming.
350 AM MST Fri Nov 25 2016 Upper level high pressure will migrate eastward across the area today, with generally clear skies and light winds at most locations. As 700mb temps climb toward 2C, max temps around the region will rise to slightly above average levels, and a few near 60F readings will be possible over the lower Arkansas Valley. Saturday and Saturday evening, With the upper ridge across the area, dry and mild weather for late November is expected. During the evening, an approaching longwave trough will begin spreading moisture into the San Juan Mountains, with the possibility of snow developing toward midnight in our CWA.
A cold front will arrive this evening and MVFR ceilings will be possible in post frontal regime for a few hours. There is a subtle short wave trough passing over the Mid- Coast region today and CIRA layered precipitable water image shows higher moisture just to the northeast of this area. Water vapor imagery shows an upper level jet streak moving across northern Mexico into South Texas which may provide some weak lift, and the Mid-Coast region will also be in proximity to slightly better low level moisture convergence ahead of a prefrontal trough. The cold front with the drier air arrives this evening with rain chances shifting to the western areas and diminishing overnight.
353 AM CDT SAT JUN 25 2016 CWA has been free of precip for the past few hours while the cold front makes steady eastward progress across the Dakotas. Cold front will make steady progress across the CWA this morning, basically clearing the area by 18Z. Left some low pops in the forecast through the morning for anything that may develop along the cold front over the next several hours. Main issue over our area today will be the increased fire danger over central SD as very dry air moves in behind the cold front. Increased highs a few degrees too, especially east where they will still tap into some warmer air late this morning into the afternoon. Sunday stays breezy and warm as low pressure moves east across southern Canada.
/issued 302 AM CDT SAT JUN 25 2016/ Surface and upper-level ridge to persist through the remainder of the weekend.
Temps trends mainly in the upper 70s to the mid 80s should also drop into the lower/mid 70s going into the early morning period Sat.
Influence of upper-low over Montana/Canada border diminishing across the forecast area, as an upper-level ridge builds in from the south and west.
High pressure will bring dry and somewhat less humid weather to most of central Indiana today. Humidity will return for Sunday ahead of a cold front that will trigger scattered thunderstorms Sunday and Sunday night.
302 AM CDT SAT JUN 25 2016 Surface and upper-level ridge to persist through the remainder of the weekend.
439 AM CDT SAT JUN 25 2016 An upper high that has been situated over the Lower Mississippi River Valley and western portion of the Southeast shifts west a bit, but otherwise remains in control. The resultant subsidence will continue to bring temps well above seasonal, with highs today generally in the upper 90s, and overnight lows tonight in the low 70s, along with keeping the area generally rain free. We may see the front sag a bit farther south, extending from the Tennessee Valley into the Lowcountry of South Carolina Sunday. With a weakening influence from the ridge, expect at least some shower and thunderstorm activity to return to the forecast area by Sunday afternoon.
Temperatures vary throughout the region with the highest heat index values at the current moment occurring just south of the front in locations with less cloud cover and increased dewpoints due to moisture pooling just south of the front. Expect at least two more days with high temperatures in the mid 90s for Saturday and Sunday as an upper ridge the builds over the region.
With stacked high pressure and below normal atmospheric moisture still in place over the area, chances for showers and thunderstorms will remain low today- peaking at around 20% in our northernmost and easternmost zones. These slight chances are due to the potential for convection outside our forecast area to our north, caused by upper level divergence from a trough over the northeastern states, and to our east, from seabreeze along the FL Peninsula.
Drier air begins to filter over the area in the wake of the trough as flow becomes more zonal today. Temperatures will run 5 to 10 degrees cooler north of the I-70 corridor behind the cool front.
346 AM CDT SAT JUN 25 2016 The dominate high pressure that has resided across the Southern Plains over past several days will build back northward some today and Sunday. Highs in the low to mid 90s are forecast for this afternoon with heat index values in the upper 90s to near 104 degrees across the CWA. a low pressure system currently over Montana and Southern Canada is progged to continue to shift eastward along/near the United States Canada border with a trailing frontal boundary moving into the Central Plains. latest model solutions continue to retreat the ridge of high pressure westward over the Desert Southwest.
Synoptic Setup: As of this morning a large closed low has moved across the international boarder and northern High Plains. This has repressed the hot high pressure back to over the Desert Southwest and Lower Intermountain West and left an area of cool zonal flow over the Pacific Northwest and northern Rockies in its wake. To the northwest a weak ridge sets over Alberta with a synoptic trough over the Gulf of Alaska. Today through Sunday night: Wrap around precipitation is anticipated to move around the back side of the exiting low and clip the northern most zones with rain showers while bringing cooler temperatures to the whole CWA.
215 AM MDT SAT JUN 25 2016 Upper low is moving along the Canadian border through MT, with a 90kt jet rounding the base of the trough. Upper low will shift eastward today, and the focus of the strong winds will then be across northwestern SD, along an area of tighter pressure gradient and beneath the upper jet. Highs will be much cooler, in the mid 70s to mid 80s. Rather unsettled conditions are expected early to mid week with a flat ridge over the nrn Rockies.
Low clouds will continue to develop early this morning as the low-levels cool and moisten. A weak upper level disturbance/TUTT low moving into the eastern part of the Mexican state of Coahuila is beginning to impinge upon the upper level ridge located over the Southern Plains and push it to east into Louisiana. Global and hi-res models continue to trend towards more scattered showers and thunderstorms tomorrow as the upper level low pushes into northern Coahuila tomorrow. The greatest rain chances and totals currently appear to be in the vicinity of the Austin-San Antonio corridor southeast towards the Coastal Plains where terrain and sea-breeze effects along with dynamic forcing from the upper level low should be maximized.
A weak cold front will approach from the northwest Sunday afternoon with a chance of precipitation overspreading the area from the northwest heading into Sunday afternoon into Sunday night. Overnight lows will range from the mid 50s to the lower 60s. High pressure will be firmly across the region on Saturday while a mid level ridge builds in aloft from the west. while the mid level ridge moves overhead. Under mainly clear skies, lows will range from the lower to mid 60s. High pressure will push off to the east with southwest flow boosting temps ahead of approaching cold front.
324 AM CDT SAT JUN 25 2016 A weak warm front, bisecting the PAH forecast area from northwest to southeast early today, is expected to move northeastward through the region and become diffuse during the day.
411 AM EDT Sat Jun 25 2016 High pressure will dominate the weekend as quiet weather and warming temperatures move in.
Westerly flow aloft has moved into Northern California as an upper low over the Northern Rockies moves eastward.
411 AM MDT SAT JUN 25 2016 Next cold front currently approaching the northern CO border will move into southeast Colorado later this morning and afternoon, stalling out to the south of Highway 50. Meanwhile, southern extent of the upper trof axis will be swinging through WY and northern CO this afternoon, with weak embedded impulses within the moisture plume bringing some lift over southern CO this afternoon. Lightning, locally heavy rainfall, gusty winds, and small hail will be the main threats with all thunderstorms today as deep layer shear is running a tad on the low slide. Temperatures today will run around 5 degrees cooler than yesterday, particularly on the plains. This will provide for scattered pops along the higher terrain and isolated storms for the e plains, with convection developing by late morning the most likely scenario.
406 AM EDT SAT JUN 25 2016 High pressure in place across the region will provide for mainly sunny skies and seasonably warm temperatures today.
and Sunday Primary forecast issues today through sunday morning center on precipitation trends and severe potential tonight as a cold front slides over the state. With high pressure drifting east of the area early this morning, increasing waa to the west was producing areas of BKN040 clouds over Minnesota and far western Wisconsin. Anticipate the brunt of convection to occur along and ahead of the cold front which at 700 pm Saturday was over eastern Minnesota. This front appears to move out ahead of the main upper low system and slows down tonight before depart southeast Wisconsin Sunday. As far as severe potential, mu capes approaching 2500 J over the western half of the state prior the cold front passage this evening.
644 AM EDT SAT JUN 25 2016 High pressure over the Great Lakes will continue to provide fair weather to our area through this evening. Cloudiness will increase late tonight as a cold front approaches, and there is a slight chance of thunderstorms west of Interstate 69 by Sunday morning. A warm southeast to south flow will continue today on the back side of a ridge of high pressure. There is a good chance for thunderstorms by late in the day as the upper level trof moves into the area. Wind directions in the lower atmosphere should be relatively unidirectional.
618 AM EDT SAT JUN 25 2016 High pressure over the eastern Great Lakes will move slowly east to the New England coast by Sunday morning. This will allow a warm front to lift northeast across the area today. A cold front will move east across the area Sunday evening. High pressure will be the dominating weather feature through the day. As high pressure begins to move east of the region, expecting weak warm air advection to take place today at the surface. Highs today will be warmer than yesterday due to the warm air advection beginning to develop. High pressure remains in control tonight as it moves east of the area.
the upper level ridge will attempt to expand back over the state. Temps on Sat should also be a couple deg warmer as a result of less cloud cover.
An Unsettled Weather Pattern Heat and humidity will return today with temperatures climbing into the lower 90s by the afternoon.
/issued 834 PM EDT FRI JUN 24 2016/ 00Z water vapor and H4 RAP analysis show a broad area of upper level ridging in place over the Florida peninsula this evening. the subtropical ridge axis stretches east to west across the central FL peninsula into the eastern and central Gulf of Mexico. A ridge of pressure from the western Atlantic to the Gulf will meander north and south over FL through the weekend.
With surface dewpoints currently in the 60s to lower 70s across much of the cwa, should prove to be a warm night tonight with a cold front still analyzed back over far western North Dakota down into southeast Montana. A low pressure system and associated frontal boundary will track across the CWA late tonight and Saturday morning. The main points of interest will be the rebuilding of the upper ridge, albeit to a lesser extent compared to previous occurrences this spring, over the Desert Southwest/Southern Rockies. There is only really one wave that is expected to traverse the ridge, entering the northern plains and dipping southeast.
Moisture continues to wrap into northwest Montana associated with the exiting low pressure system, so rain and high elevation snow remains this morning. High pressure will begin to move into the region, so temperatures will be warmer today, though breezy winds remain in the forecast. Otherwise, the rest of the region will have above normal temperatures under high pressure. The trend from Sunday-onward will be much similar: continued above normal temperatures with mostly sunny skies under persistent high pressure.
313 AM MDT SAT JUN 25 2016 Upper level trof will move across the Northern high plains today with an associated 60kt jet streak stretched across Northern Colorado. There will be a weak cold front which will accompany the trof which will slide southward across Northeast Colorado early this morning. low levels will become more stable with cooler low level temperatures on the plains. Temperatures will be cooler behind the front with readings only in the lower to mid 80s over the plains. A deepening upper level low over Canada combined with a building ridge over the southern CONUS will create extended zonal flow aloft. In the post frontal upslope environment storms will be form over the higher terrain then move over I-25 corridor by Sunday evening.
345 AM EDT SAT JUN 25 2016 A large ridge of high pressure will be in control of our weather through the weekend. High pressure will be directly overhead across our region providing sunny skies and warm temperatures. By late tonight the ridge of high pressure will drift off the Atlantic seaboard setting up a return flow of even warmer air for Sunday. Fair weather will continue across much of the forecast area Sunday night although there will be a chance for some showers late at night across the western Adirondacks as a weakening cold front approaches from the eastern Great Lakes region.
136 AM EDT SAT JUN 25 2016 High pressure over the Great Lakes will drift to New England Saturday but will continue to influence weather across the region through Saturday.
645 AM EDT Sat Jun 25 2016 High pressure will dominate the weekend as quiet weather and warming temperatures move in.
631 AM EDT SAT JUN 25 2016 High pressure in place across the region will provide for mainly sunny skies and seasonably warm temperatures today.
400 AM CDT SAT JUN 25 2016 Water vapor loop indicated upper level low pressure system over southern ALTA with an upper jet moving up the east side of the trough. Upper jet will shift over the area this afternoon and upper trough will move across southern MAN Sat night. N-S Cold frontal boundary forecast to move to the Red River by 18Z.
429 AM CDT SAT JUN 25 2016 The subtropical mid/upper level ridge will continue to be the primary weather influence for the ArkLaMiss region as we go through the weekend. Recent area RAOBS show that strong subsidence and drying associated with the ridge has maintained a capped airmass, but will note that the cap is not quite as strong as previously observed. Heat stress will also continue to be a concern in association with the ridge. /EC/ Models and their respective ensembles continue to show that the subtropical ridge will fluctuate through the period.
323 AM CDT SAT JUN 25 2016 Subtle warm front has lifted into central Missouri this morning where a few showers and isolated thunderstorms have developed along this feature. With a bit of warm air advection this afternoon, temperatures will rise into the lower to middle 90s across the forecast area. Cold front entering northern Nebraska will slowly drop southward through the day, reaching northwest Missouri early Sunday morning. Cold front will slowly sag southward on Sunday, reaching the I-70 corridor by Sunday evening.
SHORT TERM (Today through Sunday): Tropical moisture continues to increase across the region courtesy of deep southerly flow between the large upper low over North Central Mexico and Broad mid level high pressure across the Southern Gulf Coast. The abundant tropical moisture to combine with increasing upper diffluence and lift associated with the northward moving upper low leading to scattered showers and thunderstorms across the entire Rio Grande Valley. NAM, GFS and ECMWF all move the upper low farther north with mid and upper level winds turning southwest to west cutting off the tropical moisture feed.
The 2 pm EDT regional surface analysis showed a a broad area of high pressure across much of the Gulf of Mexico, and a weak trough from southeast AL through central GA. Lows will be in the lower to mid 70s. Deep layer ridging will cover the Southeast on Saturday, with heights and lower-tropospheric temperatures running about 2 standard deviations above normal. Though showers and thunderstorms are expected, they'll likely start a bit later in the afternoon, and with the anomalous ridge still in place another afternoon of upper 90s should be expected.
400 AM EDT SAT JUN 25 2016 Upper ridge centered mainly over the MS valley will continue to dominate the forecast area today. Weak upper-level ridging holds over the region through the weekend. and eventually evolves into broad upper troughing across the eastern U.
Mid level ridge across the area today with southwest surface winds will result in hot temperatures again. The beaches will also be hot with highs reaching the low/mid 90s before the seabreeze pushes inland. Storms that develop over central Ga near a slow moving cold front may reach se Ga during the late afternoon/evening hours. Weak trof/left over frontal boundary and increased moisture will lead to scattered to numerous showers and storms during the afternoon and evening hours. Slight shift in steering flow out of the Northeast will allow for further push of the Atlc Coast sea breeze inland later in the day which will interact with the weak/southward morning trof/frontal boundary to help kick off shower/storm activity.
133 AM EDT SAT JUN 25 2016 A slow-moving cold front south of Pennsylvania will continue to move further away.
126 AM EDT SAT JUN 25 2016 A large ridge of high pressure will be in control of our weather through the weekend. Looking for temperatures to bottom out in the 50s with some 40s across the higher terrain of the southern Adirondacks. By Saturday the ridge of high pressure will cover the northeastern third of the country and then slowly slide southeastward off the eastern seaboard on Sunday. We will hold onto slight chance wording across northern Herkimer county overnight as this area will be on the edge of the higher theta-e air late.
326 AM CDT SAT JUN 25 2016 At H5 closed low over the Gulf of Alaska. Fairly strong closed low over Montana this morning creating weather from the central into the northern plains. Weak ridge ahead of this system through the Mississippi Valley and a trough from the Hudson Bay low into the east coast. Highs today in the low 80s and lows tonight in the 50s to around 60.
An upper level trough over the northeastern and mid-Atlantic states is enhancing upper level divergence to our north and will aid in convection development today along a front that is draped across northern Georgia and South Carolina.
Satellite imagery and and upper-air analysis shows the trough that brought the cool front through the state heading farther into Montana. Stable boundary layer and ample radiational cooling has allowed winds to diminish considerably overnight and temperatures to drop into the 40s in the valleys and even 30s in the higher elevations. The relatively comfortable airmass currently in place over the region will steadily warm over the weekend as the next ridge over the Southwest builds during the next few days. Winds will decrease overall across the state as the trough moves farther away and ridging develops over the four corners area. Forecast soundings and model guidance indicate virtually no potential for daytime convective showers through the weekend as moisture remains very low in the lower and mid-layers.
High pressure is sliding east as a trough of low pressure/cold front approach from the northwest. The lake counties will see a bit of onshore flow, so a tad cooler there, especially up toward Sheboygan. Some of the high res models are very bullish with some convection across the CWA this afternoon, but this looks to be a symptom of exaggerated dew points more than anything.
315 AM EDT SAT JUN 25 2016 A cold front will push through the area this morning. High pressure will build in from the north this weekend. Another cold front will slowly move into the region by mid week and linger in the vicinity with waves of low pressure moving across it through late in the week. Weak slow moving cold front located near the NC/VA border early this morning. Partly to mostly cloudy skies will prevail with a light NE breeze and lower dewpoints making for pleasantly cooler temps with lows in the low/mid 60s interior to upper 60s/near 70 beaches.
328 AM MDT SAT JUN 25 2016 Showers and thunderstorms are expected to begin redeveloping around mid day along and ahead of a cold front that will be sweeping across the forecast area today. Weak westerly flow aloft and the amplification of high pressure over the western U. along with high pressure moving across the central high plains will diminish the possibility of storms across the region on Sunday. However, isolated to scattered thunderstorms moving off the higher terrain and across the plains will be possible again late in the day and through the evening as storms develop in the convergent area of higher moisture return flow along the front range.
325 AM EDT SAT JUN 25 2016 High pressure over the eastern Great Lakes will move slowly east to the New England coast by Sunday morning. This will allow a warm front to lift northeast across the area today. A cold front will move east across the area Sunday evening. High pressure will be the dominating weather feature through the day. As high pressure begins to move east of the region, expecting weak warm air advection to take place today at the surface. Highs today will be warmer than yesterday due to the warm air advection beginning to develop. High pressure remains in control tonight as it moves east of the area.