Aikyam-Lab/Synoptic-Bench huggingface dataset:
Not much to update again this evening with high pressure dominating the region. Adjusted temperatures slightly as some areas are cooler so far when compared to the previous forecast. With the colder temperatures near and below freezing tonight, areas near lakes and rivers may see some fog development during the early morning. High pressure over the region will bring clear skies and light, mainly nne, winds.
915 PM EST Sat Nov 12 2016 Canadian high pressure will build across the area through tonight before moving to our south for Sunday.
634 PM EST Sat Nov 12 2016 High pressure will build across the eastern U.
641 PM EST Sat Nov 12 2016 A pressure ridge will extend through the Ohio River Valley tonight and direct cold air into the forecast area. A pressure trough will develop off the Georgia and South Carolina coast tonight and remain in the area through Sunday.
629 PM EST Sat Nov 12 2016 A large area of high pressure over the Ohio Valley will remain in place through Sunday.
214 PM PST Sat Nov 12 2016 A weak trough will pass by to the north this evening with a band of mid and high level cloudiness.
These factors will keep temperatures noticeably warmer tonight, with overnight lows in the low to mid 50s across the region.
429 PM MST Sat Nov 12 2016 Mean ridge of high pressure will remain in place over the region bringing mild and dry weather. Dry air in place with light winds and mostly clear skies will support strong radiational cooling Sunday night, with cooler readings forecast.
light but steady E/NE flow thru the H100- H85 lyr noted on the lcl/regional wind profilers around the leading flank of a large anticyclone dominating the WX pattern from the MS river eastward.
1029 PM EST Sat Nov 12 2016 Currently - A large high over the eastern United States is not really filtering its gradient across the Keys area due to weak lower level troughing over and east of the Florida Peninsula. A fairly weak pressure gradient due to weak lower level troughing near Florida will keep light northeast to east breezes across Florida Keys waters.
543 PM CST Sat Nov 12 2016 1034 mb Canadian high pressure over central IL will drift southeast into the mid MS and Ohio river valleys by Sunday.
532 PM CST Sat Nov 12 2016 Another fine autumn day thanks to a large ridge of high pressure sprawled across the Plains/Upper Mississippi River region. Warm air advection tonight into Sunday ahead of an approaching cold front moving through the Northern Plains.
708 PM EST Sat Nov 12 2016 High pressure will continue across the region for the remainder of the weekend.
High clouds streaming in from the W/SW will continue given the persistent upper low well out to the west. /ISSUED 358 PM CST Sat Nov 12 2016/ A weak cold frontal boundary sliding off the coast this afternoon with a light northeast breeze and increasing mid to upper level cloudiness from the southwest. The weak upper low over the Texas Panhandle is modeled to develop into an open wave trough tomorrow. this trough deepening over the eastern U.
Expect middle and upper level cloud decks to return to the area tonight through Sunday, however, as a series of weak upper level lows embedded within the southern branch of the jet stream move east across the Tennessee Valley into the southeast U. Meanwhile at the surface, high pressure over the midwestern U. High temperatures Sunday afternoon will only get to, or perhaps just above, 70 across the forecast area as thicker mid and upper level cloud decks likely keep things cooler than today.
These are the mid level H5 low over the Texas Panhandle and the broad tropical low pressure system located near the West Coast of Mexico. The low over Texas is pulling in the stream of moist. tropical air which is overrunning a shallow layer of cooler dry air near the surface. the low gains more momentum to the north as it become reabsorbed by the mean flow. High pressure and drier air will build into the region.
This due in part to an upper level trough spinning across the Ok/Tx Pnhdl. Also adjusted sky grids to match current and expected fcst trends given the high clouds present. WE remain on the fringe of cirrus with SKC N and W and keeping station S and E as the upper trough is right over the ArkLaMiss.
/issued 119 PM PST Sat Nov 12 2016/ A weather system moving across the Pacific Northwest today flattened the ridge of high pressure over the region.
933 PM CST Sat Nov 12 2016 High pressure settling over the region this evening will result in another night of light winds and clear skies.
611 PM EST Sat Nov 12 2016 High pressure with well below freezing temperatures tonight.
625 PM EST Sat Nov 12 2016 A large area of high pressure over the Ohio Valley will remain in place through Sunday.
High clouds will increase late tonight and Sunday with the approach of a weak short wave trough. This will bring cooler temperatures and increasing clouds starting over the mountains overnight then moving onto the plains by the afternoon. Highs in the lower to mid 60s will still be above average for this time of year with no precipitation in the forecast.
840 PM MST Sat Nov 12 2016 High pressure will build into the area this weekend as an upper low exits into the center of the country.
1003 PM EST Sat Nov 12 2016 A pressure ridge will extend through the Ohio River Valley overnight and direct cold air into the forecast area. A pressure trough will develop off the Georgia and South Carolina coast tonight and remain in the area through Sunday.
508 PM EST Sat Nov 12 2016 High pressure will continue across the region for the remainder of the weekend.
420 PM MST Sat Nov 12 2016 Latest upper air analysis shows the ridge now over the Central Plains with the closed low now over Northern Texas. Tonight lows will be similar to last night due to favorable radiational cooling conditions in place despite the air mass being warmer. Behind the trough northwest winds will be breezy but not as strong as today. Highs will be a few degrees warmer than today as the cooler air from the surface to the east moves further from the Tri-State Area.
Scattered to broken mid/high clouds will also translate east across the region through Sunday with a passing upper trough.
/issued 331 PM CST Sat Nov 12 2016/ No weather issues to concern oneself in the short-term, aside from temperature forecast as dry conditions will be maintained under the influence of continental high pressure. Went pretty close to blended model guidance though some of the cooler locations may fall a few degrees below the consensus numbers tonight.
523 PM EST Sat Nov 12 2016 High pressure will continue across the region for the remainder of the weekend.
Trended toward the latest NAM forecast keeping the low offshore with a narrow corridor of stronger winds being maintained late tonight along the coast and marine zones north of St Augustine. Isolated to scattered shower activity expected to persist north of the low.
859 PM CST Sat Nov 12 2016 Quiet weather will persist across central and southeast Illinois overnight with sprawling high pressure across the region. 1034 mb Canadian high pressure over central IL will drift southeast into the mid MS and Ohio river valleys by Sunday.
451 PM CST Sat Nov 12 2016 A trough of low pressure will approach from the northwest later tonight which will shift the strong southerly gradient to the south of the area. The more westerly component to the wind on Sunday will lead to better mixing and warmer temperatures at the surface. Highs will range from the lower 60s in northwest Iowa to the lower 70s in central SD.
702 PM EST Sat Nov 12 2016 High pressure will continue across the region for the remainder of the weekend.
The upper low over Texas will shift East into the Southern Plains but will not affect the forecast other than some increase in cloud cover over the area.
452 PM CST Sat Nov 12 2016 Expansive high pressure remains in control across the eastern half of the US this afternoon, with clear skies, light winds, and seasonable temperatures across the region. With the center of the high slowly settling south tonight, expect temperatures to quickly fall into and through the 40s this evening with a near-perfect radiational cooling setup. After a cool start, temperatures should warm nicely into the low 60s on Sunday as winds become southerly.
A sfc trof of low pressure will move across nwrn parts of the TX and OK Panhandles Sunday afternoon, with winds becoming north at KDHT and WNW at KGUY by late in the day. The upper level low to the west of the area will cross the Panhandles tomorrow while another upper low gets pinched off just off of the west coast. Temps will being a warming trend for the beginning of the work week as ridging builds in. Mid level heights begin to fall midweek as the closed low gets picked up by the main flow as part of a longwave trough.
943 PM EST Sat Nov 12 2016 High pressure with well below freezing temperatures tonight.
912 PM EST Sat Nov 12 2016 A large area of high pressure over the Ohio Valley will remain in place through Sunday.
1026 PM EST Sat Nov 12 2016 High pressure will continue across the region for the remainder of the weekend.
Visibilities there have increased with the lowest of 4 miles at Andrews Airport in NC. Frost will begin forming in the next few hours in the colder valleys first and still expect lows to be freezing or below across the northern half of the region and eastern mountains. Warmest locations will be on ridges of the central and southern valley and exposed locations of the Cumberland Plateau and mid slope areas of the Appalachians tonight. Some increase in clouds late over southwest North Carolina should hold temperatures mainly just above freezing.
An upper low--actually the remnants of the system that plagued our region with showers through the middle of last week--is currently situated across the Texas Panhandle this evening and is inching slowly towards the northeast. No rain is anticipated as ascent is weak and sub-850 mb air remains dry, although we might see some virga/sprinkles developing across our central and southern counties towards Sunday morning as the upper low heads east. Scattered to broken mid/high clouds will also translate east across the region through Sunday with a passing upper trough.
Dry northerly flow in the lower levels with cirrus moving e-ne over the area will help to keep any fog development at bay. Expect middle and upper level cloud decks to return to the area tonight through Sunday, however, as a series of weak upper level lows embedded within the southern branch of the jet stream move east across the Tennessee Valley into the southeast U. Meanwhile at the surface, high pressure over the midwestern U. High temperatures Sunday afternoon will only get to, or perhaps just above, 70 across the forecast area as thicker mid and upper level cloud decks likely keep things cooler than today.
852 PM EST Sat Nov 12 2016 High pressure will continue across the region for the remainder of the weekend.
928 PM EST Sat Nov 12 2016 Sprawling high pressure over the Midwest will build east tonight through Sunday, and move off the Southeast coast Sunday night.
A centroid of the upper level ridge will roll directly over southeastern Michigan late tonight and early Sunday. A shearing of the amplitude to the upper level blocking ridge will continue Sunday.
/ISSUED 358 PM CST Sat Nov 12 2016/ A weak cold frontal boundary sliding off the coast this afternoon with a light northeast breeze and increasing mid to upper level cloudiness from the southwest. The weak upper low over the Texas Panhandle is modeled to develop into an open wave trough tomorrow. this trough deepening over the eastern U.
WE remain on the fringe of cirrus with SKC N and W and keeping station S and E as the upper trough is right over the ArkLaMiss. The upper low over Texas will shift East into the Southern Plains but will not affect the forecast other than some increase in cloud cover over the area.
445 PM MST Sat Nov 12 2016 00Z TAF CYCLE An upper low pressure system will exit eastern New Mexico and move into west Texas and Oklahoma, leaving dry conditions and VFR ranges.
High pressure continues to bridge north of the area and build on the lee side of the Appalachians allowing for the development of a wedge through the Piedmont of the Carolinas and in to east central GA. wave of low pressure will strengthen off the Florida and Georgia coast tightening the gradient and increasing low level moisture for SE portions. Should see isentropic upglide at mainly the low levels pick up through the overnight period and into Sun morning with the development of -RA. it may become quite prevalent given setup in place and have gone closer to the high pop NAMDNG than the numerical guidance. clouds moving in tonight should keep temps elevated enough that most all areas will remain above freezing.
Weak high pressure aloft will prevail over the region overnight. The remnants of a warm front will bring a threat of light rain to parts of the area on Sunday.
Mid evening temperatures ranged from the lower 70s in those locations that recently had rain like Meridianville, to the lower 80s in the drier spots like Muscle Shoals. Quiet weather should continue for the overnight, with lows falling into the lower 70s, light east winds under mostly clear skies. BCC (Issued 628 PM CDT SAT AUG 27 2016) (Issued 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.
This red flag warning looks to be marginal as winds will be weaker as upper ridge begins to build into the area, but soundings show strong enough winds aloft over the north that should mix down Sunday afternoon. 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.
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. Weak low pressure wave lifting across the region will bring chance of some showers through this evening.
(Issued 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.
1249 AM EDT Sun Aug 28 2016 A ridge of high pressure will move east of the region overnight.
Northern MI on the edge of eastern US ridge. Area is in right entrance region of 110kt upper jet which is riding over the top of the ridge. Should continue to see lowering clouds and areas of fog as seen upstream cover the region before the low tracks NE of MI as well. Sunday high pressure moves in scouring out the low clouds in the morning. High pressure will remain centered over the Western Great Lakes region Sunday night.
Trough axis in process of moving into SE Tx from east.
1018 PM EDT SAT AUG 27 2016 High pressure will persist over the region through the weekend.
A stationary front over northern Oklahoma was reinforced by convective outflow early this morning, but was beginning to advance slowly northward as a warm front into the southern Kansas counties this afternoon.
701 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.
755 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.
Skies are mostly cloudy with temperatures in the lower to mid 80s along the Florida Keys. Surface wise, an area of low pressure is located just north of the north central coast of Cuba, with a weak region of high pressure well north of our region.
/issued 137 PM CDT SAT AUG 27 2016/ Upper ridge remains over the SE US with a broad trough extending from the Dakotas down across Utah. This trough will pinch off leaving a cut off low over the 4 Corners region. This low is expected to be pulled NE around the top of the ridge. Also have an upper low along the TX coast hang around for a few days.
The CWA remains situated on the western edge of a 594dam ridge centered over the Mid-Atlantic/Delmarva with a southern stream upper-level low and trough over the Desert SW. 75 inches in the west, was advected into the CWA with the easterly flow around the ridge. Very moist tropical air to our SW associated with the upper low just off the TX/LA coast resulted in a tight moisture gradient across our far SW counties/parishes and helped keep the best precip coverage confined to this area. /issued 421 PM CDT SAT AUG 27 2016/ For the remainder of the afternoon into the early evening, there will continue to be a strong moisture gradient over the forecast area with shower/thunderstorm chances mostly confined to south of the Highway 84 corridor.
Mid evening temperatures ranged from the lower 70s in those locations that recently had rain like Meridianville, to the lower 80s in the drier spots like Muscle Shoals. Quiet weather should continue for the overnight, with lows falling into the lower 70s, light east winds under mostly clear skies.
No major changes were needed for the midnight update as warm, moist air has enfiltrated the Upper Ohio Region under broad upper high pressure. For now, have increased POPs mainly over areas north of I 70 where the ridge and mid level temperatures show weakness, but have limited numbers to the "scattered/chance" category given weak flow and questionable boundary focus. Low pressure is forecast to dig over Eastern Canada, with trough extension over the Northeast U.
Weak sfc trof has passed through wrn cwa with kKGCC winds from the nw and dwpts in the 30s while SD obs have dwpts in the 50s to lower 60s. Upper level analysis shows trough axis over the eastern Dakotas. Weak ridging is in place over the Rockies, with an upper low over the southwest US. Winds will be south to southeast, perhaps a bit breezy at times overnight from the Pine Ridge through south central SD.
432 PM PDT Sat Aug 27 2016 A strong cold front is expected to bring gusty winds this evening and heighten wildfire concerns.
826 PM EDT SAT AUG 27 2016 The main synoptic features remain the same with high pressure over the mid-Atlantic coast ridging southwest and a tropical wave moving north of Cuba.
703 PM CDT SAT AUG 27 2016 Rather significant upper level trof axis located in the Red River Valley as of late this afternoon will continue to translate eastward across northern Minnesota tonight. There is a very weak west/northwest low level push behind this S/W trof axis Sunday morning, which means that the surface-850 mb temp/moisture gradient will likely get "left behind" and still be lying WNW to ESE across central MN on Sunday. Initially, general large scale synoptic subsidence in the wake of the departing wave may inhibit additional TStorm development, but as low level warm/moist advection increases Sunday afternoon with increasing southwest low level flow, we have retained 25-40 PoPs over the central/south sections of the DLH CWA along and just north of the warm frontal zone.
536 PM MDT SAT AUG 27 2016 00Z TAF CYCLE Closed low aloft centered over northwest AZ to gradually develop southeastward this forecast period, eventually crossing the NM/AZ line between KFMN and KGUP around 00Z Mon. Ahead of the low, perturbed southwest flow aloft will maintain active SHRA/TSRA pattern although overall coverage for central/eastern NM expected to trend downward after 03Z through Sun AM but not completely end. An upper level low pressure system will slide through the area Sunday and spawn yet another round of storms for central and eastern New Mexico.
Still, do anticipate clearing will continue the next few hours, with light winds as low level ridging builds overhead likely to allow for some rapid fog development. For now, will go with more of the low clouds forming than fog but will show some fog, especially in the river valleys. A weak short wave trough is expected to come across the northern sections of Minnesota and Wisconsin. This wave looks to be pretty flat with very little pv advection, but there is some warm air advection in the low levels that generates 2 to 4 ubar/s of up glide on the 305K isentropic surface.
727 PM EDT SAT AUG 27 2016 High pressure over the area tonight will move east into the Atlantic on Sunday and create a cool onshore breeze over coastal areas. A cold front arriving from the west will bring a chance of showers and thunderstorms Sunday into Sunday night with high pressure building in behind the front through midweek.
916 PM PDT Sat Aug 27 2016 A strong cold front is expected to bring gusty winds this evening and heighten wildfire concerns. The winds will remain gusty for the next few hours on the west Plains, but most especially in the Wenatchee area and the Waterville Plateau, as well as the high elevations of the Cascades. Sunday should be about 5 degrees cooler than today with much lighter winds. New 00Z computer models have stuck to their guns with the cooler/wetter weather for the latter half of the week.
918 PM EDT Sat Aug 27 2016 Warm and dry weather can be expected until late Sunday as high pressure slides across the Upper Ohio Valley Region. A quiet overnight period is expected with ridging holding on.
800 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.
With upper trough close in the vicinity, rain chances can't be ruled out at any particular time, but suspect we'll probably see a somewhat typical diurnal trend with precip redevelopment near the coast after midnight followed by inland activity during the day.
956 PM PDT Sat Aug 27 2016 A strong cold front is expected to bring gusty winds this evening and heighten wildfire concerns. The winds will remain gusty for the next few hours on the west Plains, but most especially in the Wenatchee area and the Waterville Plateau, as well as the high elevations of the Cascades. Sunday should be about 5 degrees cooler than today with much lighter winds. New 00Z computer models have stuck to their guns with the cooler/wetter weather for the latter half of the week.
801 PM EDT SAT AUG 27 2016 Mainly clear to partly cloudy skies are expected under high pressure tonight. A weak cold front will bring scattered showers and thunderstorms into the region Sunday afternoon and evening.
Rather significant upper level trof axis located in the Red River Valley as of late this afternoon will continue to translate eastward across northern Minnesota tonight. There is a very weak west/northwest low level push behind this S/W trof axis Sunday morning, which means that the surface-850 mb temp/moisture gradient will likely get "left behind" and still be lying WNW to ESE across central MN on Sunday. Initially, general large scale synoptic subsidence in the wake of the departing wave may inhibit additional TStorm development, but as low level warm/moist advection increases Sunday afternoon with increasing southwest low level flow, we have retained 25-40 PoPs over the central/south sections of the DLH CWA along and just north of the warm frontal zone.
/Issued 229 PM CDT SAT AUG 27 2016/ An upper level high will be found to our east and an upper level trough will be found to our west through this forecast.
735 PM EDT SAT AUG 27 2016 Aviation Showers are moving out of Michigan late this afternoon and a weak cold front will wash out across southern Lower Michigan tonight. Latest radar loop continues to show pcpn moving away from the cwa as a wave of low pressure moves over Lake Michigan enroute toward northern Lower. The upper trough driving the low will remain north of Lake Superior and not have much if any influence on the weather across the cwa. The trailing cold front, if you want to call it a front, will wash out over the southern cwa tonight leaving high dewpoints in the mid 60s across the cwa.