Aikyam-Lab/Synoptic-Bench huggingface dataset:
152 AM EDT Sun Oct 23 2016 A quick moving low pressure will bring rain showers mostly north of Pennsylvania and Ohio turnpikes Sunday night. Highs Sunday should reach low 60s by afternoon, mid to upper 50s in the high terrain and across the north. Rain will initially hold off until after sunset tonight, but will quickly spread to areas north of I-80 and eventually into the ridges overnight into Monday morning. Gusty southwesterly winds will continue overnight as a strong low-level jet streak will accompany the passage of the low. Cool northwest flow will re-establish in the wake of the clipper and associated cold front. Can't completely rule out lake-enhanced showers across the north Monday, as the cooler air moves over the relatively warm Lake Erie waters.
bringing the first touch of lake effect snow flakes to the higher ridgetops. Light lake effect shower activity has finally diminished with little more than spotty drizzle or flurries likely occurring over the highest terrain of the northwest mountains at this hour. High pressure gradually works in from the Great Lakes Tue into Wed keeping below normal temperatures in place. CAA comes to an end on Wed as upper ridge finally moves through. But looks like potentially another quick shot of cooler air late week, with the GFS and EC battling it out for synoptic features by Sunday.
Palmer WV imagery shows the upper ridge gaining ground on the srn CONUS this morning in the wake of the departing trof over the E Coast. Weak disturbance moving around the wrn periphery of the ridge bringing some cirrus to our region, and this will continue throughout today and into Tue.
333 AM CDT SUN OCT 23 2016 Breezy and unseasonably warm conditions are expected across central and southeast Illinois today in advance of a cold front. Cooler temperatures, but more normal for late October, will filter across the area tonight behind the front.
Pressure gradient over land area will relax this evening as high pressure builds in from the west and thus expect wind gusts to diminish around sunset. Tonight, the CWA will be under dry northwest flow with high pressure building in at the surface. Expect lows mainly in the lower 40s with the mid to upper 40s along the coast. The deep upper level trough over our area today will move off to our east during this period. This will lead to large diurnal temperature variations, with highs warming into the lower 80s each afternoon, and inland lows dipping down to the mid 40s to lower 50s under excellent radiational cooling conditions.
bringing the first touch of lake effect snow flakes to the higher ridgetops. Light lake effect shower activity has finally diminished with little more than spotty drizzle or flurries likely occurring over the highest terrain of the northwest mountains at this hour. High pressure gradually works in from the Great Lakes Tue into Wed keeping below normal temperatures in place. CAA comes to an end on Wed as upper ridge finally moves through. But looks like potentially another quick shot of cooler air late week, with the GFS and EC battling it out for synoptic features by Sunday. A trough approaching Sunday evening could bring showers across the northern half of TAF PA.
135 AM EDT SUN OCT 23 2016 High pressure will bring much cooler and drier air to the region through the weekend. Another cold front is forecast to move through the state Monday, bringing additional cool and dry air. A few areas may still be able to go to calm and remain there overnight (cold air drainage into the lower lying areas - allowing the development of scattered light frost. West-northwesterly flow, 20-30kt at 850mb, ahead of a frontal zone dropping backdoor into the Mid-Atlantic States, will result in warmer temps on Sunday. Not as cold on Sunday night with a light wind, 45-49 An upper level trough will exit the east coast early this week and a dry cold font will pass through Monday night leaving central NC on the front side of an upper level ridge.
244 AM MDT Sun Oct 23 2016 Upper ridging will strengthen today across the nrn Plains into the Canadian Plains. SErly winds today will continue into Monday with highs reaching the low 60s to mid 70s Mon aftn. Dry weather and slightly warmer than average temperatures will continue from Monday through the rest of the week as a mean upper ridge persists over the region.
Sunday will be mild with highs of 60 to 65, but it will be a bit cooler Monday with highs in the 50s.
Highs today will be a tad cooler today, especially across the north, given the more upslope wind. The upper level ridge over the southern plains breaks down and moves off to the east by Monday night. Meanwhile, a short wave trough over northern Mexico now moves northeast through the ridge tonight through early Monday.
What is really unusual about this forecast is that all of this uneventful weather will occur despite a cold frontal passage. A few renegade readings in the upper 30s are not out of the question, but won't be low enough for frost, as the ridge should move eastward enough to send most dew points back above 40 by midnight. Ahead of the cold front, Highs on Sunday will warm back into the lower to mid 70s, with minimum temperatures by Monday morning dipping into the upper 40s to lower 50s.
228 AM MDT Sun Oct 23 2016 Early morning WV imagery and RAP upper level analysis shows broad ridge still in place across southern plains, with westerly flow across the northern plains. A weak cold front has moved into our northern CWA, and is now moving into our NW Kansas counties.
354 AM EDT Sun Oct 23 2016 A ridge of high pressure centered to the south will keep dry weather over the region today, but an approaching cold front from the north will bring some gusty winds. The cold front will drop through the region tonight, but will only bring some clouds.
510 AM EDT Sun Oct 23 2016 A quick moving low pressure will bring rain showers mostly north of Pennsylvania and Ohio turnpikes Sunday night. Highs Sunday should reach low 60s by afternoon, mid to upper 50s in the high terrain and across the north. Rain will initially hold off until after sunset tonight, but will quickly spread to areas north of I-80 and eventually into the ridges overnight into Monday morning. Gusty southwesterly winds will continue overnight as a strong low-level jet streak will accompany the passage of the low. Cool northwest flow will re-establish in the wake of the clipper and associated cold front. Can't completely rule out lake-enhanced showers across the north Monday, as the cooler air moves over the relatively warm Lake Erie waters.
High pressure centered over AL will gradually shift east to over GA through Monday with generally clear skies. High pressure will dominate the state with VFR conditions and a light NW-W wind through the forecast period.
403 AM EDT Sun Oct 23 2016 The day will start with high pressure overhead. but low pressure across the Upper Midwest will dive southeast to northeast OH/nw PA by this evening. High pressure will shift east across southern Canada.
In the meantime, with decent gradient between the ridge and cold front, gusty south to southwest winds will help temperatures to rise into the mid to upper 70s under sunny skies. With little in the way of moisture associated with cold front, it will slide through dry late this afternoon before exiting forecast area this evening. Not a lot of cold air behind this front, so will see lows near normal in the low 40s far north to the upper 40s south tonight. Otherwise, Sunday will feature southwesterly winds with gusts to around 15-20 knots, turning more to the WNW by the end of the period as a dry cold front moves through all sites. Otherwise, a dry cold front will push through Sunday evening, turning winds more out of the WNW.
319 AM CDT Sun Oct 23 2016 High temperatures for this afternoon will drop about 10 degrees from yesterday's highs, as a cold front now over southwest Nebraska drops south into the western 1/3rd of the state.
605 AM EDT Sun Oct 23 2016 A quick moving low pressure will bring rain showers mostly north of Pennsylvania and Ohio turnpikes Sunday night. Highs Sunday should reach low 60s by afternoon, mid to upper 50s in the high terrain and across the north. Rain will initially hold off until after sunset tonight, but will quickly spread to areas north of I-80 and eventually into the ridges overnight into Monday morning. Gusty southwesterly winds will continue overnight as a strong low-level jet streak will accompany the passage of the low. Cool northwest flow will re-establish in the wake of the clipper and associated cold front. Can't completely rule out lake-enhanced showers across the north Monday, as the cooler air moves over the relatively warm Lake Erie waters.
645 AM EDT Sun Oct 23 2016 The day will start with high pressure overhead. but low pressure across the Upper Midwest will dive southeast to northeast OH/nw PA by this evening. High pressure will shift east across southern Canada.
Behind the front on Sunday winds will be from the north and temperatures will be a little cooler. There will be south winds as the high moves to the east and there will be an increase in moisture through the period.
353 AM CDT Sun Oct 23 2016 A cold front will swing east of our area by mid morning, leading to a cooler and breezy day. Under mostly sunny skies highs will range from the upper 50s through the Highway 14 corridor, to the mid 60s through the lower Missouri River Valley into our lower northwest Iowa zones. An upper ridge of high pressure is situated west of the forecast area, with a mild southeast flow of air in this forecast area. Therefore mixed in some raw model values which were substantially warmer, especially the non bias corrected temperatures.
/Issued 852 PM CDT Sat Oct 22 2016/ High pressure aloft will continue to slowly drift east tonight. The increasing clouds and onshore winds will lead to a warmer temps and increasingly more humid than previous night. Weak low level moisture advection tonight should allow min temps to be approx 10 degrees warmer than this morning. with an increase in thicker cirrus aiding in warmer temps as well. associated H5 high is prog to shift east and allow a weak s/w trough /currently evident on water vapor imagery over MX/ to move NE across the W Brush Country. greater moisture advection from the sfc to H85 is prog to occur as a weak warm front pushes north. Even warmer for Sun night as moisture depth increases across the region.
647 AM EDT Sun Oct 23 2016 A strong low pressure system over eastern Canada will keep windy and cool conditions over the region today.
638 AM EDT Sun Oct 23 2016 A ridge of high pressure centered to the south will keep dry weather over the region today, but an approaching cold front from the north will bring some gusty winds. The cold front will drop through the region tonight, but will only bring some clouds.
High pressure ridging will begin to build once again today across the forecast area continuing through Monday.
Overnight, a cold front will move east across the area and bring breezy northwest winds and cooler temperatures. Low pressure begins to organize over the Rockies on Monday, with a tightening pressure gradient throughout the day.
A ridge of high pressure will remain with dry northwest flow with PWs of 0.
This activity is now being aided by a weak upper low over the cntrl Gulf Coast states and may develop further to the n as sly flow returns over much of the region later today. As max heating increases close to the 90F mark, a tstm or two may develop along the srn zones as a warm front tries to develop near the cntrl TN Valley.
1155 AM EDT MON SEP 12 2016 High pressure building over the area this afternoon will pass offshore tonight into Tuesday.
1116 AM CDT MON SEP 12 2016 High pressure remains in control of the Midwest with another pleasant day in store. Another very pleasant night across the Midwest as high pressure continues to dominate. The center of the high was located well to our east early this morning with the ridge axis centered right across central Illinois.
This activity is now being aided by a weak upper low over the cntrl Gulf Coast states and may develop further to the n as sly flow returns over much of the region later today. As max heating increases close to the 90F mark, a tstm or two may develop along the srn zones as a warm front tries to develop near the cntrl TN Valley. However, the cold front which pushed southward thru the region last Sat evening will begin to return nwwd as a warm front late this aftn. A few shra/tsra may accompany the warm front, and VCSH has been included at HSV/22-03Z and MSL/00-05Z.
1017 AM EDT MON SEP 12 2016 High pressure will remain over the area today before moving east of the area on Tuesday.
An upper low will form over Idaho today then shift to northern California tonight before moving east across Nevada on Tuesday.
1255 PM EDT MON SEP 12 2016 A large area of high pressure over the eastern Great Lakes will shift off the New England Coast tonight.
1112 AM EDT MON SEP 12 2016 High pressure moves away from the area today through Tuesday.
This will result in widespread dry weather though with temperatures staying near to slightly cooler than normal. Given the cooler temperatures aloft associated with the broad trough across the Pacific Northwest, anomalous SBCAPEs will support additional isolated showers this morning from Maricopa county eastward. Minor adjustments to the short-term forecast were needed to account for some cooler temperatures. The formerly mentioned Pacific Northwest trough will swing into cntrl Nevada Tuesday, becoming more neutrally tilted, and temporarily stall/fill (before lifting out later in the week).
Dynamics ahead of an upper trough continues to feed shower development along a line from Field's Oregon to Mountain Home to Fairfield this morning. The line of showers was associated with an upper trough, which extends across the Pacific Northwest and northern Intermountain West. The trough will transition to a closed upper low pressure system over northern California tonight. The upper low will move into north-central Nevada on Tuesday. Showers will move back into portions of SE Oregon and SW Idaho, with the best chance of showers along the Nevada border which will be closest to the center of the upper low. Temperatures will be cooler with highs mainly in the 60s to mid 70s.
940 AM EDT MON SEP 12 2016 A large area of high pressure over the eastern Great Lakes will shift off the New England Coast tonight.
Forecast adjustment made to cloud cover this morning across the lower Sacramento Valley. Mostly clear skies across interior NorCal early this morning except for some mid-clouds over far northeast CA along the cold front. The trough will deepen along the West Coast today and early Tuesday. The trough is mostly dry but will bring some chances for showers and thunderstorms in the northern Sierra along with breezy conditions.
704 AM EDT MON SEP 12 2016 A large area of high pressure over the eastern Great Lakes will shift off the New England Coast tonight.
1132 AM EDT MON SEP 12 2016 A cold front will become stationary just south of the area today then slowly dissipate tonight and Tuesday.
An approaching low pressure system and increasing moisture will lead to scattered showers and breezy winds through Tuesday.
751 AM EDT MON SEP 12 2016 High pressure builds over the Tri-State Region today, then offshore on Tuesday.
937 AM EDT MON SEP 12 2016 High pressure builds over the Tri-State Region today, then offshore on Tuesday.
926 AM EDT MON SEP 12 2016 High pressure will build south of the area through Tuesday.
There is, however, still a pocket of dry air hanging on in the mid levels, due to subsidence associated with the persistent mid level ridge over the area. This will help to keep convective activity somewhat limited along and east of the I-95 corridor today but a few showers/storms will still be possible along the coast thanks to increased low level moisture convergence in association with an inverted trough offshore, which is a northward extension of a tropical disturbance in the Bahamas. High pressure will be north of the waters this week, providing a persistent onshore flow.
740 AM EDT MON SEP 12 2016 High pressure will remain over the area through early this week.
1030 AM EDT Mon Sep 12 2016 High pressure over central Pennsylvania will shift east through tonight.
Approaching cold front tomorrow looks to bring in an increase in mid clouds for afternoon, with southwest winds reaching and exceeding 10 knots. The ridge axis will traverse the area this afternoon allowing deeper layer southwesterly flow to return.
The main focus for the short term is rain chances this morning and potential freezing temperatures and frost tonight. As high pressure builds in this evening the chances for precipitation will drop and shift further south. The latest short-term model guidance suggests temperatures in the low to mid 30s will be common across portions of western and northern North Dakota as the center of high pressure moves into these areas by the early morning hours.
VFR conditions with breezy south winds will prevail today with mostly sunny skies expected under high pressure. The high will continue to shift eastward tonight as low pressure approaches. A period of MVFR ceilings and visibilities are anticipated with the slow-moving cold front on Tuesday. The Small Craft Advisory still looks reasonable for today given the tightening pressure gradient ahead of approaching low pressure. Persistent southerly winds ahead of an approaching low pressure system are expected to build waves to the 3 to 5 foot range by this afternoon for beaches in Sheboygan and Ozaukee counties. The higher waves will linger into the evening hours, creating a period of a high swim risk.
1117 AM EDT MON SEP 12 2016 High pressure moves away from the area today through Tuesday.
/issued 547 AM CDT MON SEP 12 2016/ This morning a mid level low pressure area was indicated over Southern Alabama and extending into the central Gulf of Mexico.
The cold front that plowed through western Montana yesterday will continue to impact the region with scattered showers along the Continental Divide, southwest Montana and parts of west central Montana. A reinforcing shot of cooler air will cross the Divide this morning contributing to a raw day across the region.
Strong high pressure aloft over the Pacific Northwest will produce sunny and dry weather this week.
Moisture will be directed into the area in the easterly flow between high pressure off the Mid-Atlantic coast and low pressure in the Florida area through much of the week. Slightly cooler air at 500mb around -8C and forecast LI values around -6C should support scattered convection with an isolated pulse thunderstorm severe threat once again today. Followed the consensus for the low temperature forecast. Moisture should remain high in the forecast area with an onshore flow between high pressure off the Mid-Atlantic coast and easterly wave moving from Florida into the Gulf. The models display deepest moisture south of the forecast area and indicate upper ridging which should help limit coverage. Forecasted chance pops as indicated by the guidance consensus with the higher pop in the south section closer to deeper moisture.
The cold front has reached extreme southeast colorado. but the push through the Metro area has been anemic and a longmont anticyclone has set up. Cooler air is infiltrating northeast Colorado. A cold front will move through Denver over the next couple hours. The previous forecast was based on a slower timing with warmer temperatures this morning, so I dropped the highs for today a bit. It still looks like most places should edge into the lower 70s this afternoon, but it will be a bit cooler north of Denver. We will hang on to the low PoPs for the late afternoon and evening mainly for this.
1226 PM EDT MON SEP 12 2016 High pressure will build south of the area through Tuesday.
1229 PM EDT MON SEP 12 2016 Aviation An area of high pressure centered over Pennsylvania this morning will track east today. Southwest winds around this fair weather system will draw up a warmer and increasingly moist airmass from the south into Michigan.
608 AM CDT MON SEP 12 2016 Cold front continues to make slow progress as it passes through the forecast area.
Forecast highs in the low to mid 80s look on track. 03Z surface analysis showing high pressure parked across Lake Erie and this will be the dominant feature for the short term period. Otherwise cool start to the day with temperatures in the low to mid 50s for most. This high pressure will move east into the Mid Atlantic Coast through the day with more moisture return and warmer temps will be the story this afternoon. Given the mostly clear conditions again tonight would suspect another reasonable ridge valley temperature split will be in place by Tuesday morning. Upper ridging will remain parked across the southeastern U.
Showers and thunderstorms may affect the area after 22Z ahead of a cold front. /Issued 455 AM CDT MON SEP 12 2016/ An upper trough will approach the Panhandles from the western states this week with a cold front slowly tracking south into the Oklahoma Panhandle by sunset this evening and then into the northern Texas Panhandle by late tonight. The cold front may push as far south as the central Texas Panhandle by daybreak Tuesday and then across the far southern and eastern portions of the forecast area by late Tuesday morning. Increasing isentropic lift behind the cold front on Tuesday. and the approaching upper trough from the west will allow for chances for convection to continue by Tuesday afternoon through late this week.
1131 AM EDT MON SEP 12 2016 High pressure builds over the Tri-State Region today, then offshore on Tuesday.
628 AM CDT MON SEP 12 2016 Cold front position and shra over the far NW FA in line with current forecast so no changes needed. Cold front roughly bisecting the forecast area from NE-SW and should clear most of the FA by sunrise.
844 AM MDT MON SEP 12 2016 Upper level trough continues to dig south from the Northern Rockies and MT towards the Great Basin this morning, with the bulk of the widespread precipitation now to the South of the forecast area ahead of the trough axis.
Easterly winds in the low levels (h9-h8) at 10-15 knots this morning will increase into the late afternoon and evening to 15- 20 knots. Retreating deep high pressure ridging to the north will allow for deep onshore flow over the area.
1033 AM EDT MON SEP 12 2016 The mid and upper level low over southern Louisiana will allow for deep layer moisture to spread northward through today as well as brining in some upper energy as well. /issued 425 AM EDT MON SEP 12 2016/ A broad upper ridge will continue across the southeast during the period.
1128 AM EDT MON SEP 12 2016 High Pressure has settled over the eastern states once again in the wake of a weak cold front this past weekend. Temperatures were a good 5 to 10 degrees cooler early this morning but drier air mass will allow a quick warmup. Not sure highs will be 3 to 5 degrees warmer that we have currently forecast especially in areas that do get more cloud cover but not confident enough to change.
959 AM EDT MON SEP 12 2016 High pressure will build across the region through today before slowly moving offshore Tuesday.
629 AM CDT MON SEP 12 2016 Cold front as of 08z just to the west of the forecast area across central South Dakota. As the cold front moves through, cooler air will take hold. Chances will be kept on the low side.
712 AM EDT Mon Sep 12 2016 High pressure building over the Northeast today will provide clear and dry weather to the North Country through Tuesday night, along with seasonably cool nights and mild to warm afternoons.
508 AM MDT MON SEP 12 2016 A cold front will move through Denver over the next couple hours. The previous forecast was based on a slower timing with warmer temperatures this morning, so I dropped the highs for today a bit. It still looks like most places should edge into the lower 70s this afternoon, but it will be a bit cooler north of Denver. We will hang on to the low PoPs for the late afternoon and evening mainly for this.
1220 PM EDT MON SEP 12 2016 High pressure moves away from the area through Tuesday.