Aikyam-Lab/Synoptic-Bench huggingface dataset:
/issued 321 PM CDT SAT AUG 27 2016/ A coastal trough has been the instigator of showers and a few thunderstorms across our region, rotating in a counter-clockwise direction.
651 PM EDT SAT AUG 27 2016 High pressure will continue to move away from the region tonight. This will allow low pressure to track east across the northern Great Lakes into Ontario on Sunday dragging a cold front across the region.
232 PM CDT SAT AUG 27 2016 Scattered showers and thunderstorms have developed across the area as of 2PM in response to afternoon heating and a weak inverted trough draped to the north of the area.
surface analysis and model data continues to depict deep and broad high pressure over most of the southeast states, and keeping a generally northeast to easterly across Florida.
With a summertime wx pattern will be in place per ridging influences sfc/aloft, enough low level moisture will be around to support development of mainly diurnal based convection.
156 PM EDT SAT AUG 27 2016 High pressure will build across the region today then move to the east Sunday.
Large mass of storms can be seen over LA rotating around the upper low off the coast and crossing north of the surface boundary.
Much cooler temperatures today and through the upcoming week as onshore flow persists across the area. A broad upper trough shifts over the region and will remain with little change, as a series of impulses rotate through the trough for a few rounds of enhanced precipitation chances through the week.
253 PM EDT SAT AUG 27 2016 A large ridge of high pressure will reside over Pennsylvania through midday Sunday bringing very warm and mainly dry weather.
mainly in the higher terrain of southeast OK and west central AR will continue through the afternoon. with slightly higher coverage most days across the higher terrain of southeast OK and west central AR. THe upper pattern combined with expected cloud cover will keep afternoon high temps mainly in the low 90s across much of the area for this upcoming week.
Tue into Fri will see increasing SFC ridging, leading to fair weather for the most part. Could see increased cloud cover and maybe some isolated showers on Wed as a thermal trough drops through and brings 850mb temps down to around 6C.
Tonight Through Sunday Dry west flow aloft will bring breezy to windy conditions with low relative humidity and warmer temperatures this evening. High pressure will begin to build north across western and central Wyoming on Sunday with a decrease in winds.
it appears RAP is underdoing the low level instability and lapse rates over the northern Hill Country and northwest towards Midland.
1044 AM PDT Sat Aug 27 2016 A strong cold front is expected to bring gusty winds today and heighten wildfire concerns. Current observations and trends suggest situation is well in hand with a dry cold front dropping off of the cascades and into the western basin this morning. A thick shield of mid level AC and cirrus accompanies this front and will inhibit solar heating this afternoon keeping temperatures a few degrees cooler than yesterday but still seasonably warm. otherwise this will be a classic dry cold front. /Fugazzi 18Z TAFS: A dry cold front over the Cascades at 18Z will move through the region today.
Weak southwesterly flow aloft will continue due to an upper level trough developing to our west and a large subtropical ridge over the SE U.
703 PM EST Mon Jan 23 2017 A low pressure system passes overhead this afternoon and to the east tonight. Progressively colder mid and late week with passage of a cold front and lingering northwest flow. The upper low will move off the VA capes tonight and as northwest flow becomes established across the area. expect the mountains to see the bulk of light precipitation overnight with upslope snow showers accumulating an inch or so across the highest ridgetops. Any lingering precip will taper off quickly Tuesday night as moisture thins and upper ridging moves in.
Upper low is dropping south offshore Eureka this afternoon with several disturbances rotating through the system into northern California. Upper low will open and weaken as it drops into SoCal Tuesday.
Kept a Wind Advisory going for the higher elevations of the east TN mountains. A few snow flurries possible as well in the highest elevations in the east TN mountains in the early morning. Chattanooga Airport, TN 38 58 42 64 / 10 10 0 30 Knoxville McGhee Tyson Airport, TN 43 56 41 64 / 30 10 0 20 Oak Ridge, TN 42 56 41 61 / 20 10 0 30 Tri Cities Airport, TN 41 51 35 63 / 60 20 10 20 NC.
Light southerly winds overnight will increase by 16Z across the region as strong pressure gradient develops ahead of next trough and associated surface front. A cold front is still on track to move across the forecast area Tuesday night.
723 PM EST Mon Jan 23 2017 A strong low pressure center over the Carolinas will move off the Mid-Atlantic Coast tonight. The air mass will be drying overnight as the low moves slowly away from the area. A dry pressure ridge moves into the area Tuesday and will remain over the area through Tuesday night.
936 PM EST Mon Jan 23 2017 Precipitation will diminish overnight as low pressure pulls further away from the region.
315 PM MST Mon Jan 23 2017 Latest satellite and surface observations indicate a broad area of low pressure over the Great Basin. Ahead of the front, the atmosphere mixed well in the lower elevations of southeast UT and portions of western CO with highs in the lower elevations well into the 40s and near 50. The Durango/Pagosa areas remained near or just below freezing, so precipitation late this afternoon will likely fall as mainly snow. Winds aloft are really humming with gusts over 80 mph reported in the high San Juans.
Dry conditions are expected across the region on Tuesday as high pressure continues to move in. The strong upper level trough will continue to move east northeastward from the Southeastern United States into the Mid Atlantic by Tuesday. Any leftover showers in the area will dissipate quickly this evening as drier and cooler air continue to work into the region.
Dry conditions are expected across the region on Tuesday as high pressure continues to move in. Gale Warning in effect through this evening for Gulf and The strong upper level trough will continue to move east northeastward from the Southeastern United States into the Mid Atlantic by Tuesday. Any leftover showers in the area will dissipate quickly this evening as drier and cooler air continue to work into the region.
/issued 511 PM CST Mon Jan 23 2017/ High pressure at the sfc and zonal flow aloft with very dry airmass across the region.
A potent upper trough that brought tornadic severe weather across the portions of the Southeast yesterday and Sat night continues to push off to the east with lingering cloud cover and windy conditions the only vestiges of its presence over the TN Valley. Winds should continue to diminish further tonight with much cooler air (since Jan 9th) advecting southeast across the TN Valley as temperatures drop into the mid to upper 30s. Broad ridging will follow the exiting trough with any lingering cloud cover dissipating from southwest to northeast. As this occurs an elongated positively tilted broad trough will be moving across the western half of the CONUS bringing snowfall to the Rockies but likely bringing rainfall to the Southern Plains and Southeast.
Windy conditions at times through the late tonight as pressure gradient remains rather tight from the low pressure system off the MID ATLC coast. Latest estimates this evening of 988 mb low pressure east of the VA coast. Skies are just now mostly clear over nearly all land zones as the last of the low clouds moves southeast into the coastal waters. Models suggest some low clouds still possible over the northwest zones late tonight but strong subsidence on the back side of the strong mid/upper level trough should prevent much of anything beyond midnight from entering our area. No big changes for min temps in the lower to mid 40s except for some upper 40s near the coast due to winds being elevated.
DRY AIR WILL CONTINUE TO MOVE IN TO THE SOUTHERN APPALACHIANS AS THE LOW PRESSURE SYSTEM MOVES EAST THROUGH NC. HIGH PRESSURE AND DRY AIR WILL SLOWLY FILTER IN TO THE AREA TUESDAY.
As low pressure area pulls slowly off the Mid-Atlantic coast, clouds have cleared over our southwestern counties today. Winds should be light as a narrow high pressure ridge moves across the area.
The responsible low pressure system continues to move away along the Atlantic coast, approaching New England. As the low gains distance, the environment is becoming less hospitable for weak low topped shower formation with less moisture and increasing stability.
417 PM CST Mon Jan 23 2017 This afternoon high pressure on the surface and aloft dominated the weather pattern across the Four State Area and provided cool and dry conditions.
940 PM EST Mon Jan 23 2017 Low pressure off the coast will move northeast overnight.
646 PM EST Mon Jan 23 2017 Developing low pressure will move along the North Carolina coast tonight.
1016 PM EST Mon Jan 23 2017 A strong low pressure center over the Carolinas will move off the Mid-Atlantic Coast tonight. The air mass will be drying overnight as the low moves slowly away from the area. A dry pressure ridge moves into the area Tuesday and will remain over the area through Tuesday night.
We have seen some enhancement of returns heading into the higher terrain of southeast Kentucky. This will continue to be where the highest rain chances are focused through the rest of the evening and overnight hours. This will signal the beginning of a pattern change ahead of the next cold front drying out as it reaches the OH valley. Deep low pressure moving northeast toward the Great Lakes will initially bring us warm air advection as the period starts.
Low pressure will deepen across the high plains of southeast Colorado keeping breezy southeast winds and mild temperatures in place across the forecast area tonight. Above normal temperatures will continue into Tuesday across much of the area before a cold front arrives ushering in more seasonable temperatures for late Jan. A cold front will move across portions of central Kansas by late Tuesday afternoon.
635 PM CST Mon Jan 23 2017 Light snow is falling at Mobridge and Aberdeen South Dakota, but it has not gotten close to the far southwest FA yet. Clouds should hold tight overnight and with little overall change in thermal profiles temperatures will be cooler overnight but continue above average. a cool upper trof shifts south across the area bringing slightly cooler temps to the region.
High pressure and unseasonably mild conditions will briefly return for midweek before a pattern change brings colder temperatures and lake effect snow to close out the month.
Tomorrow will feature an increase in west winds for all areas with any precip activity focusing on the higher terrain. A cold upper low along the west coast will swing inland tonight, resulting in accumulating snow across much of western and northern New Mexico. Deep upper low taking its sweet time sagging south along the west coast today. This upper low is forecast to open up and sag southeastward toward NM tonight. Both hi-res and global models, however, agree that the main mid-level (baroclinic) frontal band associated with the upper trough will move through tonight. The slower progression of the main upper level trough will lead to greater snow shower coverage across the northern mountains Tuesday and Tuesday night.
The high-res guidance continues to show the potential for dense fog, LIFR ceilings and visibility at KGRI and eventually at KEAR. Precipitation is expected to develop during the early morning hours with freezing drizzle possible through mid-morning. Currently the question is how cold will the temps go and if they stay above freezing. Drizzle/freezing drizzle will transition to rain by afternoon and eventually snow by around sunset.
An upper level ridge of high pressure will move east of the region tonight in response to an approaching low pressure system. Lee cyclogenesis is occurring across eastern CO as broad upper troughing overspreads the western US.
As this low continues it's southward trek overnight, its affects on our weather will continue to decrease. C/km has been sufficient for a few lightning strikes and even transient mesocyclone development across the outer waters west southwest of Crescent City, but these storms have rapidly weakened as they try to approach the southwestern Oregon coast due to weaker 0-6km bulk shear. Given the recent rainfall, clearing skies, and forecast light winds, some valley fog or freezing fog development is likely overnight, and this was retained in the forecast.
The first is over Martin and Pike counties and appears to have a tie directly to Lake Erie as some the low level returns from JKL radar are being picked up in southern Ohio. We have seen some enhancement of returns heading into the higher terrain of southeast Kentucky. This will continue to be where the highest rain chances are focused through the rest of the evening and overnight hours. This will signal the beginning of a pattern change ahead of the next cold front drying out as it reaches the OH valley. Deep low pressure moving northeast toward the Great Lakes will initially bring us warm air advection as the period starts.
609 PM EST Mon Jan 23 2017 Low pressure near the North Carolina coast will move off shore this evening and then track northeast along the coastline through Tuesday night. To our west, high pressure in the central plains will briefly ridge into the region on Tuesday.
Expect dry weather tonight as high pressure builds in across the region. /27/ Prior discussion below: Tonight and Tuesday: The upper low has shifted well to the east of the area this afternoon, as upper and surface ridging build into the area.
A Pacific cold front will move across the area later tonight into Tuesday morning. /Issued 302 PM CST Mon Jan 23 2017/ The upper level analysis places an upper level ridge over the southern Plains breaking down as Pac NW trough digs into the Great Basin region. A strong mid level jet is rounding the base of Pac NW trough bringing dry air into SW AZ per water vapor imagery.
520 PM CST Mon Jan 23 2017 The cloud cover over the Ozarks was slowly eroding from west to east as an upper level ridge was building over the region. Temperatures tonight will drop into the 30s as the skies remain clear and the upper ridge remains overhead. An approaching area of low pressure will move across the Plains on its way towards the Great Lakes through the day Tuesday. The low will remain to the northwest of the Ozarks with a dry frontal passage for the area. This will bring the potential for wind gusts Tuesday afternoon between 35 and 40 mph at times as temperatures climb into the lower to middle 60s.
651 PM EST Mon Jan 23 2017 Rain chances will continue this evening as a low pressure system continues to move southeast of the region.
511 PM CST Mon Jan 23 2017 High pressure at the sfc and zonal flow aloft with very dry airmass across the region.
632 PM EST Mon Jan 23 2017 A strong low pressure center over the Carolinas will move off the Mid-Atlantic Coast tonight. The air mass will be drying overnight as the low moves slowly away from the area. A dry pressure ridge moves into the area Tuesday and will remain over the area through Tuesday night.
Snowfall amounts still look on track for 1-2 inches below 6,000 feet (including most of Silver City), and up to 2-4 inches above 7,500 feet (including NM-15 over the Pinos Altos Range and Copperas Ridge, and Emory Pass). Expect winds late tonight will be isolated to exposed ridgelines, before expanding to a broader area in the afternoon.
Then much cooler temperatures are in store for the region with a widespread freeze Tuesday night.
The only tweak made was to end the freezing rain advisory for Dawson, Prairie, and Wibaux counties. The MDT road report also shows only minimal impacts from any freezing rain that did fall. further south, precipitation fell as Freezing Drizzle from north of Circle to Sidney. A Freezing Rain Advisory is in effect until 8 pm. A couple of upper low, one over central Canada, the second one is moving through the western states.
Light snowfall will continue for most of the week as low pressure hangs over the Great Basin. High pressure and drier conditions will dominate by the end of the week, as very cold air seeps into the Silver State.
Scattered to numerous rain showers and snow showers will dissipate overnight Isolated snow showers are possible over the higher terrain Tuesday.
854 PM CST Mon Jan 23 2017 Cloudy but quiet weather is anticipated across central and southeast Illinois overnight as a ridge of high pressure builds into the area. Clouds in place through the night should limit the radiational cooling under the ridge. with access to slightly cooler air.
514 PM MST Mon Jan 23 2017 Latest satellite and surface observations indicate a broad area of low pressure over the Great Basin. Ahead of the front, the atmosphere mixed well in the lower elevations of southeast UT and portions of western CO with highs in the lower elevations well into the 40s and near 50. The Durango/Pagosa areas remained near or just below freezing, so precipitation late this afternoon will likely fall as mainly snow. Winds aloft are really humming with gusts over 80 mph reported in the high San Juans.
A small chance of additional development will exist toward daybreak northwest of Interstate 44 on the western periphery of the upper ridge, but the greater potential will be north and also west of the area.
740 PM EDT MON AUG 29 2016 Quiet weather conditions expected early this week with high pressure in place across the northeast.
/issued 300 PM CDT MON AUG 29 2016/ Upper level low continues to slowly unwind across SRN Colorado this afternoon. Surface heating has been more limited today west of the escarpment and the lower reflectivities show this. The highest 24 hour totals have been across Yoakum county where the predominant soil type is sand. At the mid to upper levels, the drying trend will occur a bit faster as an upper ridge develops over the weekend.
Center of the upper high looks to be over wrn TN. Also no pcpn is expected due to good subsidence associated with the upper high. (Issued 600 PM CDT MON AUG 29 2016) For 00Z TAFs: A large upper high continues across much of the region.
The low temperatures are already forecast to be warmer than last night, so no changes will be needed.
1002 PM EDT MON AUG 29 2016 High pressure build in through Tuesday night.
1030 PM EDT MON AUG 29 2016 High pressure will control our weather into Tuesday night with dry conditions.
With the broad easterly flow pinched between the Depression to our south and the ridge to our north will continue to see small craft exercise caution conditions over the waters tonight.
956 PM CDT MON AUG 29 2016 Upper level low over northeast MAN will move southeast overnight while upper level ridge over ALTA/SASK will build. Cooler/drier air will move into the area overnight. Water vapor loop indicated a short wave trough moving east across the MAN/ND/MN border. Some ridge building was occurring over eastern SD with short wave over eastern CO. cold front through all but far southeastern fcst area at 20z. Temps a few degrees cooler than today but mainly because starting out a bit cooler in the morning.
954 PM EDT MON AUG 29 2016 High pressure will build over the area tonight and Tuesday.
/Issued 314 PM CDT MON AUG 29 2016/ Subtropical moisture will continue to be brought northward across the panhandles between an upper level low to our northwest and a ridge of high pressure to our east through at mid week.
/issued 626 PM CDT MON AUG 29 2016/ An upper level ridge of high pressure remains centered over the southern Ohio Valley. The Mid South remains positioned to the south of the ridge center with deep easterly flow in place.
This front will be followed by cooler, drier air and a break from recent daily rains. A nice reprieve from the active weather pattern as only small isolated showers were able to generate under the upper ridge. Quiet night in store as the ridge aloft centered across the Ohio Valley will keep dry conditions and mainly clear skies.
716 PM EDT MON AUG 29 2016 High pressure build in through Tuesday night.
836 PM EDT Mon Aug 29 2016 High pressure will remain over the Mid Atlantic will move offshore late Tuesday.
MLB finally ended the streak of 90F or warmer days at 63, with high temp at MLB only reaching 88F today. DAB reached 92F today so has extended the 90F or warmer streak at DAB to 63 days. The current forecast track for Tropical Depression Nine shows low pressure over the south-central Gulf lifting slowly northward Tue-Tue night with a shift toward the northeast on Wed-Wed night taking it toward the northeast Gulf. Higher than normal POPs will be forecast even with the tropical low pressure off to the west.
923 PM EDT MON AUG 29 2016 Quiet weather conditions expected early this week with high pressure in place across the northeast.
18Z surface data has high pressure over the Great Lakes while a cold front ran from northern Minnesota into northwest Nebraska. At the same time patchy fog will begin to develop due to light winds and high moisture levels in the lower atmosphere. Tuesday, the cold front is forecast to move through the area.
This is where the westward extension of high pressure will remain from the primary center over Lake Erie and Ontario with a position capable of directing lake moisture toward DTW. Southeast Michigan remains firmly tucked immediately south of high pressure heading into tonight. Standard looking mixing profile capped at the 850 level, but with the diurnal thermal response receiving a subtle boost as the low level gradient becomes light southwesterly.
825 PM EDT MON AUG 29 2016 High pressure will build over the area tonight and Tuesday.
753 PM EDT MON AUG 29 2016 High pressure will control our weather into Tuesday night with dry conditions.
Cold front late this afternoon extending from south of Pierre over to Sisseton pushing slowly southward.
(Issued 927 PM CDT MON AUG 29 2016) Center of the upper high looks to be over wrn TN. Also no pcpn is expected due to good subsidence associated with the upper high. For 06Z TAFs: Expect mainly vfr conditions at KMSL and KHSV thru the fcst period, due to a large area of high pressure over the region.
911 PM CDT MON AUG 29 2016 The forecast has been panning out this evening, as isolated to scattered convection has been developing along a slow-moving cold frontal boundary currently positioned from near Murdo to near Ortonville. Cold front late this afternoon extending from south of Pierre over to Sisseton pushing slowly southward.
627 PM CDT MON AUG 29 2016 Quiet weather continues as high pressure settles over the area.
Large upper low off the B. Mesolow progged to weaken to trough and track across NorCal Tuesday. Behind mesolow, larger scale upper low mentioned earlier is progged to deepen along the West Coast as it slowly digs south through the week.
An upper ridge is slowly moving east through Montana this evening. The associated warm front is now bringing isolated thunderstorms to Central Montana, west of us. to the southwest a large hot high pressure ridge has developed over Utah/Nevada/Idaho with roots in the Desert Southwest.
A westward extension of the high will remain over SE Michigan, mainly near the Ohio border. * None Southeast Michigan remains firmly tucked immediately south of high pressure heading into tonight. Standard looking mixing profile capped at the 850 level, but with the diurnal thermal response receiving a subtle boost as the low level gradient becomes light southwesterly.
726 PM EDT MON AUG 29 2016 A weak cold front will sag southward on today and Tuesday.
908 PM EDT MON AUG 29 2016 High pressure will be over the area through Tuesday.