Aikyam-Lab/Synoptic-Bench huggingface dataset:
221 AM EDT Wed Jun 7 2017 Cool and showery weather under an upper level low through much of the week. High pressure and warming conditions for this weekend. Upper trough will continue to sag south across the region, eventually forming a closed upper low over the CWA. With the deepening trough/upper low across the region, showery conditions, and associated cloud cover, high temperatures today will be several degrees below normal, with upper 60s to lower 70s common. Models are in agreement of keeping upper low pressure overhead Wednesday night through Thursday. Meanwhile, vorticity lubes will move around the upper low and enhance the forcing over the area. High pressure tries to build from the west to produce dry conditions and southwest flow through the period. Hot temperatures return this weekend with temperatures reaching the lower 90 lowlands.
325 AM EDT Wed Jun 7 2017 Weakening low pressure will give way to brief high pressure and drier air.
206 AM EDT Wed Jun 7 2017 Upper level low pressure will develop over the upper Ohio Valley region over the next few days, with only slight chances of showers at times through the rest of the week.
This minor threat for thunderstorms will continue overnight into Wednesday as a trough of low pressure moves through ND and should bring some nice warming along the same boundary which becomes oriented more towards northeast SD. Will bring a slight increased threat for thunderstorms into east central SD late Wednesday afternoon as this trough allows heights aloft to drop during peak heating. It is basically a weakness in between two high pressure areas, one which is situated in ND and south central Canada, and the other over the southern MN valley.
Today Through Thursday Night An elongated upper trough, stretching from off the New England coast back to Kentucky and southern Indiana, will be the primary driver of Arkansas weather over the next couple of days. This trough is forecast to become cutoff from the northern stream by Wednesday evening, centered roughly over West Virginia. Locally, dry northerly flow around the periphery of this trough/evolving upper low, will persist through the short term. Expect highs to range from the low 80s in the north to the mid 80s for central and southern parts of the state both today and Thursday.
Surface ridging and weak pressure gradient will keep winds generally less than 10 KTs. /00Z Update/ Upper level low/trof has moved east of the area with NW flow now in place. Clouds are showing a little more vertical development across the Highway 77 corridor and with continued daytime heating, we could see an isolated shower or thunderstorm develop through the afternoon and early evening hours. A dry forecast is in store on Wednesday as continued northerly flow in the low-levels helps to reduce the amount of low-level moisture across the region.
At the surface, high pressure will be building in, bringing sightly cooler and drier air to the region. High temps tomorrow should only reach into the upper 70's across the north, and into the lower 80's across the south. The upper level trof that has been over the midsection of the country will be moving off to the east, brining ridging to the area.
Otherwise quiet conditions for the short term as the inverted ridge axis spreads south and west across the Midwest. Weak east to southeast winds remain below 10 mph through the afternoon while dewpoints hover in the low 50s. This should result in a picturesque June afternoon with less humidity and highs reaching the lower 80s. High pressure at the surface will lay across much of northeast and north central and east central Kansas to start the day while a northwesterly flow aloft continues overhead. To the west a mid level ridge will be across the Rockies.
257 AM CDT Wed Jun 7 2017 249 AM CDT Looking at another high pressure dominated day. Temps will be cooler along the lake, but 70s are expected elsewhere.
324 AM MDT Wed Jun 7 2017 Upper air analysis continues to show a nearly stationary ridge of high pressure over western Colorado early on Wednesday morning. Mid-level moisture remains a touch higher just to the east of this ridge axis, including the central mountains and points east over the divide.
Surface ridging and a weak pressure gradient will keep winds at less than 10 KTs, mainly north and northeast in direction, except becoming east to southeast along the Rio Grande into Edwards Plateau. Mostly stable weather is expected over South Central TX through Thursday, but a broad and unstable N/NW flow aloft will trigger storms over the high plains and drift them south toward the area. Most high Temps for Thursday are thus a degree or two cooler than those under the mostly sunny sky for today.
Building high pressure ridge to the west and a deep trough to the east will maintain unseasonable northerly flow in the mid levels through the short term period. Could be a couple of degrees cooler tomorrow, but have gone on the warmer side of guidance.
309 AM EDT Wed Jun 7 2017 Cool and showery weather under an upper level low through much of the week.
626 AM EDT Wed Jun 7 2017 An upper level low will continue to hover around the region through Thursday as high pressure slowly builds south across the Great Lakes.
403 AM CDT Wed Jun 7 2017 Still dealing with the weak cold frontal boundary moving through the FA.
A warm dry southwesterly flow will develop over the area today and increase into the weekend ahead of a cold upper low from the Pacific.
235 AM CDT Wed Jun 7 2017 Early this morning, an elongated E/W oriented mid level trof extended from New England west across the Great Lakes and Ohio Valley regions. This trof and its embedded PVA is forecast to shift south today, across the east 1/2 of our area as well.
523 AM EDT Wed Jun 7 2017 A pesky upper level low pressure continues to provide cool weather with isolated showers.
500 AM MDT Wed Jun 7 2017 Upper level analysis shows a low sliding across the border of northern North Dakota and southern Manitoba as a ridge begins to amplify over the Rockies. At the surface, a frontal boundary extends through the eastern Dakotas with high pressure building over eastern Montana and the western Dakotas. A lee trough is also forming in Wyoming. This moisture combined with daytime heating, may allow a few showers or storms to form over the higher terrain of northeastern Wyoming and the Hills.
401 AM EDT Wed Jun 7 2017 A cold front will move through region early this morning and become nearly stationary across the Low Country. Upper level trough over the Northeastern states and Mid Atlantic shifting southeast so front has moved south into the central Midlands at 07z. Southern stream trough over the eastern Gulf of Mexico near panhandle Florida this morning lifting northeast. the latest HRRR model suggests showers will spread into the central Midlands associated with short wave trough. Temperatures should be cooler than previous days due to cold advection and threat for showers. Much drier and cooler air will filter into the region.
High pressure and the associated dry airmass will continue to build into the area, providing quiet weather, with somewhat cooler and less humid conditions than were seen last night. Continued north to northeast flow due to high pressure to the north will bring relatively cool and dry air through central and southeast IL over the upcoming day. Expecting a slight cooling for Wednesday compared with today, as morning lows reach the low to mid 50s, and highs reach the mid to upper 70s. High pressure will settle southward through the mid-Mississippi River Valley region Thursday bringing lighter winds and allowing temperatures to begin rising slightly. Highs Thursday should be around 80 following morning lows in the low to mid 50s.
642 AM EDT Wed Jun 7 2017 Upper level low pressure will develop over the upper Ohio Valley region over the next couple of days, offering cooler temperatures and only slight chances of showers at times through the rest of the week.
341 AM EDT Wed Jun 7 2017 A weak trough will cross the area today and be accompanied by a few clouds.
345 AM CDT Wed Jun 7 2017 Main feature of interest through the short term period is an mid/upper level low pressure system, shown by satellite imagery to be currently crossing central portions of far northern ND. Trailing to the SSW is the accompanying trough axis, extending through the Central Plains. Northwest flow continues into Thursday with the ridge axis just off to the west. Another weak wave slides around the ridge bringing with it slight thunderstorm chances late afternoon into the evening.
641 AM EDT Wed Jun 7 2017 Clouds will finally break up today, first in Central New York and then eventually Northeast Pennsylvania, thanks to high pressure.
224 AM MST Wed Jun 7 2017 Little change in the weather pattern is expected through the end of the work week as a strong high pressure system keeps temperatures above normal.
257 AM CDT Wed Jun 7 2017 High pressure remains entrenched over the western Great Lakes, resulting in another wonderfully cool and dry June morning for the Upper Mississippi Valley. Thursday will see near normal high temperatures across the area with dewpoints in the low 50s, setting the stage for another gorgeous day across the area.
259 AM MDT Wed Jun 7 2017 Upper level analysis shows a low sliding across the border of northern North Dakota and southern Manitoba as a ridge begins to amplify over the Rockies. At the surface, a frontal boundary extends through the eastern Dakotas with high pressure building over eastern Montana and the western Dakotas. A lee trough is also forming in Wyoming. This moisture combined with daytime heating, may allow a few showers or storms to form over the higher terrain of northeastern Wyoming and the Hills.
124 AM EDT Wed Jun 7 2017 A pesky upper level low pressure continues to provide cool weather with isolated showers.
436 AM EDT Wed Jun 7 2017 Upper level low pressure will develop over the upper Ohio Valley region over the next couple of days, offering cooler temperatures and only slight chances of showers at times through the rest of the week.
355 AM CDT Wed Jun 7 2017 An upper level trough continues to move eastward and away from the area, while dry northerly flow aloft and a building upper ridge replaces it.
1101 PM MDT Tue Jun 6 2017 Upper level analysis has a positively tilted upper ridge extending from Ontario to the Four Corners region with an upper low sliding across southern Saskatchewan. At the surface, a frontal boundary extends through eastern South Dakota with high pressure building over Montana, Wyoming, and the western Dakotas. Upper ridge persists over the area with Canadian upper low shifting into eastern ND. This moisture combined with daytime heating, may allow an isolated shower or storm to form over the higher terrain of northeastern Wyoming and the Hills.
Showers should be diurnally driven, so expect a dry Wednesday night with lows in the low to mid 50s.
The area remains under southwest flow aloft in advance of a strong trough off the coast. Readings will range from 95 to 100 in the lower elevations.
239 AM CDT Mon Apr 17 2017 A weak upper level trough was moving east across OK and central TX. This upper trough will remain well south of the CWA. the cooler highs in the upper 60s will be across the southeast counties where skies will remain mostly cloudy through most of the afternoon hours. Tonight as zonal flow increases across the central Rockies a lee trough will deepen across the high plains.
218 AM EDT Mon Apr 17 2017 A cold front will move south through the Ohio Valley tonight. High pressure and dry weather will return to the area for the beginning of the work week. A cold front will slip south through the region overnight. Surface cold front to drop south into the TN Vly with high pressure building into the Great Lakes. Temperatures Monday will be cooler, ranging from the upper 60s in the north to the lower 70s in the far south. Under the influence of high pressure clouds will diminish with a dry airmass over the region.
405 AM EDT Mon Apr 17 2017 Rain-free, cooler weather will be with us both today and Tuesday, as high pressure builds down over the region from eastern Canada.
Given the strong large scale winds associated with the forming low pressure system, if any organized thunderstorms occur they will be capable of producing gusts 40 to 55 mph.
209 AM EDT Mon Apr 17 2017 A cold front will cross the area this morning.
407 AM EDT Mon Apr 17 2017 High pressure ridging into the forecast area from the Atlantic will weaken today as a cold front moves into the area tonight.
401 AM EDT Mon Apr 17 2017 A cold front will cross the area this morning.
For the Lower Valley (mainly Brownsville and Harlingen/Valley) the forecast through 1 AM Tuesday is fairly non-descript, as a mix of MVFR (early and late) and VFR lower clouds will combine with plenty of cirrus/anvil debris courtesy of both short wave energy scooting within otherwise flat 500 mb flow. More interesting action may develop by early evening across the eastern slopes of the Sierra Madre from near the Big Bend to southwest of Starr/Zapata, and the arrival of the axis of the short wave trough overnight (with light easterly surface flow) has all the earmarks of an MCS/MCV that could march into the mid Valley after sunset and before midnight.
255 AM EDT Mon Apr 17 2017 Cold front crosses the region this morning with scattered showers. Cold front is just entering the Ohio Valley this morning and continues to slowly push to the southeast. Conditions should improve from west to east as weak high pressure builds in tonight.
327 AM EDT Mon Apr 17 2017 Building high pressure will ensure a dry start for the new week; however, the latter half will feature increased rain chances as a series of low pressure systems affect the region. Showers will continue to develop southward and diminish as the cold front completes passage this morning. Building high pressure, cold advection and falling dewpoints will ensure dry weather and seasonal temperature for the remainder of the near term period.
There is a strong signal in both radar trends and the high- resolution model guidance for a substantial increase in POPs across the southern tier zones through mid morning. High pressure dominates the pattern providing fair and seasonable conditions.
A cold front will move through the area late this afternoon and evening, with showers and a few thunderstorms, particularly across the southern portions of the area. A weak disturbance may produce a shower or two across the far south tomorrow, but otherwise dry weather can be expected under the influence of high pressure through Tuesday evening across central Indiana. High pressure will then dominate the area through at least Tuesday evening.
We'll also need to keep an eye on the convection moving thru OK & AR as some of the higher res guidance shows some of this trying to backdoor into our NE zones early this evening. An upper level ridge will begin building in from the southwest on Wed and nudge this impulse southward.
At the lower levels, high pressure will be over Bermuda, with light winds from the southeast.
208 AM EDT Mon Apr 17 2017 High pressure ridging into the forecast area from the Atlantic will weaken Monday as a cold front moves into the area Monday night and Tuesday.
309 AM CDT Mon Apr 17 2017 Storms have died off early this morning and a developing weak upper level ridge will do a better job of suppressing convection today. The ridge, while weak, will still prevent additional rainfall through the end of the week.
Gradually weakening high pressure remains anchored near Bermuda, with east/southeast flow across the South Florida region. Winds have decreased compared to the past couple of days, as the pressure gradient on the southern periphery of the high continues to slacken. High temperatures will be similar to yesterday, ranging from the lower 80s in eastern areas, to mid 80s in the interior and western areas.
This trough will combine with a warm, moist airmass in place over the region(as characterized by forecast PW values around 1. Hi-res guidance indicates a bit more coverage this afternoon thanks to this incoming trough and some of it may actually begin a little earlier in the late morning. However, as the trough axis lingers over the ArkLaMiss region through tonight, there is a better chance for showers to continue into the night in the moist airmass.
305 AM MDT Mon Apr 17 2017 Current surface analysis shows cold front slowly sliding south across southern SD and northeast WY, with high pressure in place over the Canadian Prairie provinces. Temps range from 20s across far northwest SD and the Black Hills to the lower 40s across south central SD. Highs will range from the lower 60s across far northwest SD and the higher BH to the mid 70s over far southwest SD. The best chances later this afternoon may end up being from far northeast WY into far southwest SD near developing weak trough/dryline.
315 AM PDT Mon Apr 17 2017 A low pressure system over the eastern Pacific will bring stronger deepening of the marine layer into the valleys on Tuesday.
354 AM CDT Mon Apr 17 2017 A weak trough generated an increase in mid-level clouds overnight, along with a few sprinkles over parts of central and southern MN. Therefore highs, while still relatively close to normal values for mid-April, will be cooler. Expect highs to range from the lower 50s into central MN to lower 60s along the Iowa border. The forecast gets more active again tonight as a compact mid-level low/trough races from the northern Rockies across the Dakotas and across northern MN/WI on Tuesday.
The Red Flag Warned area is directly south of the a west to east oriented cold front stretched just north of the ND/SD border this afternoon. Temperatures in ND have been 5-10F cooler, with dewpoints in the upper 20s to low 30s. This is while the main area of high pressure has shifted from west central SD down through eastern NE. Otherwise large high pressure across south central Canada will slowly sink across the Dakotas overnight, and slide over MN by mid day Monday. When the period opens Monday night, a low pressure system is moving across the forecast area. The upper level flow pattern sets up into an almost zonal pattern briefly before another low pressure system moves out across the plains states mid-week.
Scattered showers linger across SW Washington and NW Oregon this morning, due to an upper level trough moving across the Pac NW. Meanwhile, a broader upper low well offshore will guide a series of disturbances into Oregon and Washington, keeping our weather unsettled through Tuesday.
558 AM EDT Mon Apr 17 2017 A dry low level environment maintained by high pressure slipping by to the north will favor VFR conditions through the period. Mid-level fgen anchored on the periphery of the mid-level trough axis pivoting through the upper midwest is supporting showers over the southern half of Minnesota and western Wisconsin this morning. Meanwhile, strong high pressure over northern Ontario will reinforce lake aggregate high pressure locally leading to persistent onshore flow in the Thumb. Remnants of the PacNW cyclone lift across the Straits Tuesday night, the attendant cold front settling southward through the CWA, eventually becoming stationary as it aligns with quasi-zonal deep layer flow.
A combination of an upper level low passing to the south of the area through this morning and a frontal system making its way onshore this afternoon will bring a return to wet conditions.
Except for some thin cirrus, the remainder of the high country was clear with very dry air at mtn top level (dwpts in the single digits).
Both system will bring valley showers and snow to the higher mountains.
Also added fog again, as warm front lifts north through SW Kansas. Widely scattered showers and thunderstorms developing over the higher terrain of eastern Colorado on Monday evening could move out over western Kansas Monday night as a low level jet sets up.
348 AM EDT Mon Apr 17 2017 High pressure will bring dry weather for the beginning of the work week.
305 AM CDT Mon Apr 17 2017 High pressure will slide over Minnesota today setting up an easterly flow over eastern SD this afternoon.
539 AM EDT Mon Apr 17 2017 Cold front crosses the region this morning with scattered showers. Did a quick update to PoP with cold front just starting to push through our SE Ohio Counties. Cold front is just entering the Ohio Valley this morning and continues to slowly push to the southeast. Conditions should improve from west to east as weak high pressure builds in tonight.
Maximum temperatures both Monday and Tuesday are forecast in the low 80s, typical for this time of year.
120 AM EDT Mon Apr 17 2017 High pressure will provide fair weather through Tuesday.
645 AM EDT Mon Apr 17 2017 Cold front crosses the region this morning with scattered showers. Did a quick update to PoP with cold front just starting to push through our SE Ohio Counties. Cold front is just entering the Ohio Valley this morning and continues to slowly push to the southeast. Conditions should improve from west to east as weak high pressure builds in tonight.
The main trough of low pressure will move into the Great Basin on Tuesday with clouds and winds increasing ahead of this system.
342 AM EDT Mon Apr 17 2017 Cooler and drier air will return for Monday and Tuesday.
303 AM MDT Mon Apr 17 2017 An area of low pressure will be moving over the northern Rockies today causing widespread precipitation for the Pacific northwest reaching Idaho and Montana later today. This low pressure will put an end to our zonal flow as upper level winds shift to the southwest allowing temperatures to climb thanks to warm air advection. On Tuesday, a jet streak will approach from the southwest and will support a cold front at the surface.
At the sfc, high pres ridges westward over the southeast CONUS with a light southerly flow persisting acrs the area. KLCH radar so far this morning has been relatively quiet with just a few showers just offshore south of the lower Atchafalaya Basin.
628 AM EDT Mon Apr 17 2017 High pressure ridging into the forecast area from the Atlantic will weaken today as a cold front moves into the area tonight.
Models have a little QPF, but left pops under 20 percent due to the low level dry air. Temps will be a bit tricky today, as high pressure sliding by to the north will push colder air south, moving in the quickest by Lake Michigan. Biggest issue is timing the push of cooler air as it moves sw into the forecast area. Otherwise, temps will be above normal across much of the forecast area prior to the arrival of the cooler air in the afternoon.
Cooler and drier air will return behind the front for the first half of the work week. High pressure builds into the area Monday bringing somewhat cooler air. Tuesday looks to be a fair and chilly day with a large anticyclone centered over the maritimes of Canada which ridges down across the northeast U.
With the longwave trough in place and persistent northwest flow and mostly clear skies, temperatures will fall to around 10 to 15 below zero across southern MN and western WI, and 15 to 20 below zero in portions of central MN and northwest WI. Arctic high pressure will continue working in from the northwest, so the winds will ultimately diminish by later in the day tomorrow.
A cold front has cleared the forecast area this afternoon, with high pressure building into the southeast behind it. Tuesday will be another pleasant day, albeit warmer by a few degrees. A quasi- stationary frontal boundary is noted in the lower levels in the NWP guidance across the NE Gulf and northern half of the FL peninsula.
Weak High pressure tonight will briefly clear skies out and bring another re-enforcing shot of cold air over the region. High pressure just off to our southwest will keep us dry through the period. As the high pressure spreads eastward and the trough moves off to the northeast, temperatures will increase somewhat towards the end of the work week.
Next cold front turns winds northeasterly and increase during day Tuesday.
Low clouds to maintain slightly warmer low temperatures in the mid 30s while the remainder of the ArkLaTex falls below freezing. Winds will continue out of the E, but back to NE during Tuesday as a back door cold front arrives.