Aikyam-Lab/Synoptic-Bench huggingface dataset:
1254 PM CDT Sat Apr 10 2021 Fairly nice today, then a cooler pattern ahead. Rain showers continued into the predawn hours associated with an upper low pressure system gradually migrating into eastern Kansas. Afternoon low relative humidity falls to the low 20th percentile west of Highway 281, but decreasing wind speeds should preclude fire weather conditions. On Sunday the western upper trough emerges from the northern Rockies and translates across the northern/central Plains, sending a cold front south through our region during the day.
237 PM CDT Sat Apr 10 2021 Lingering light rain and drizzle will end from southwest to northeast during the late afternoon into this evening as cyclonic circulation around an upper low over northern Illinois weakens. Patchy light rain and drizzle will continue to revolve around an upper low north of St Louis into this afternoon. The precipitation will end from southwest to northeast as the upper low lifts into the Great Lakes.
Rainfall associated with the pre-frontal trough continues to push eastward this morning. The main cold front is still back to the west. Breaks in the cloud cover will take place later this morning and into the afternoon with high temperatures climbing into the low to mid 70s. As mentioned above, there is some concern that widely scattered showers and thunderstorms could redevelop along a cold front late this afternoon/early this evening, as it shifts slowly southeastward into the region. A beautiful day is expected across the region on Sunday, with sunny skies and light/moderate west-southwest winds along the northern rim of a ridge of high pressure building eastward along the Gulf Coast.
1212 PM CDT Sat Apr 10 2021 The main forecast challenges this weekend deal with a brief stint of an upper ridge and its breakdown. Temperatures jump today under a strong warm air advection scheme, then fire weather concerns return Sunday as a cold front brings gusty winds. The closed upper low responsible for dreary conditions yesterday continues on its eastward trek toward the Great Lakes. This evening into tonight, the H85 thermal ridge crosses the area and is quickly followed by the cold front. Blended in some cooler guidance for the usual cool spots in the panhandle, Platte River Valley, and Calamus basin. Most spots should bottom out in the lower to mid 30s. With the upper ridge broken down, western Nebraska enters northwest flow aloft, especially with the next closed low swinging down into the northern Plains.
205 PM MDT Sat Apr 10 2021 A strong Pacific weather system and cold front will bring cool and windy conditions along with another round of snow showers today into tonight. A Strong upper-level trough with associated upper-level jet streak will impact the region through tonight. A cold front moved east across the region this morning and early afternoon, which shifted winds more west to northwest and brought some strong gusts mixing down from aloft. This front is followed by a second stronger cold front this evening into the overnight which is co-located with the upper trough.
Steady warm frontal rainfall lifts out of central PA Sunday morning, but we'll watch for the potential for local storms along the cold front in the afternoon, particularly near the triple point over our southeast where SPC has placed MRGL thunder outlook Sunday afternoon. Sunday should be the warmest day of the this week south and east of the Allegheny Front, where highs should reach the low to mid 70s. Precip should end Sunday night from west to east fairly quickly as the cold front moves off the coast, but the rain chances for the rest of the week are far from over.
In the upper levels, a trough will be over the Southeast tonight and tomorrow. With mostly cloudy skies lows will be in the low to mid 60s.
642 PM CDT Sat Apr 10 2021 Summary: Cool and damp weather continues as a large area of low pressure moves north through Lake Michigan wrapping around bands of precipitation that will impact the Northland for several days. A large area of low pressure will slide up Lake Michigan into Sunday as it merges with an upper level low and elongates zonally across the Northland.
616 PM CDT Sat Apr 10 2021 Upper level low pressure over central Illinois will continue to pull off to the east this evening.
Opted to start the wind advisory a few hours earlier for parts of far western North Dakota, and started later Grant and Sioux counties based on latest analysis of the cold frontal passage timing. Current surface analysis places low over southern Saskatchewan, with a cold front dropping to the south. Upper level analysis places trough pushing into the Rockies, with ridge over our area. Change come tonight as the aforementioned cold front pushes east and aforementioned upper trough pushes east and deepens. With the cooler air pulling in behind the front, a mix of rain or snow is possible. On Sunday, aforementioned upper trough stops and closes off over the northern plains, resulting in likely precipitation over much of our area.
Expect mostly clear skies tonight with lows ranging from the upper 40s to the lower 50s. Tonight we can expect clear skies with lows ranging from the upper 40s to low 50s, which is cooler than the last couple of nights we've had. Tomorrow we shall continue this quiet/rain free set up as mid- level ridging settles in.
1038 PM EDT Sat Apr 10 2021 Low pressure will slowly track across the lower Great Lakes into the beginning of the week.
As drier air filters in following the passage of yesterday's cold front, clouds will continue to gradually clear out leading to an absolutely gorgeous weekend for SE Texas. The low humidity will last through Sunday, so this weekend will be perfect for spending time outdoors. High temperatures today will range from the mid-to-upper 70s for our northern counties to the low 80s for our southern counties. Afternoon temperatures on Sunday will be a bit warmer with highs in the mid 80s.
The cold front is still located to the west but is starting to nudge into northwest Alabama. The upper level pattern features a deep closed low to the north centered over Missouri. The upper level closed low and cold front will continue to push eastward this afternoon and into the overnight hours. Much drier air advects in behind the cold front tonight. Therefore, expect temperatures will warm quickly into the low to mid 70s on Sunday.
Lingering light rain and drizzle will end from southwest to northeast during the late afternoon into this evening as cyclonic circulation around an upper low over northern Illinois weakens.
756 PM EDT Sat Apr 10 2021 Low pressure will slowly track across the lower Great Lakes into the beginning of the week.
Winds calm down overnight tonight as the cold front sags into southern parts of Nevada.
Subfreezing temperatures are expected Sunday morning before the weekend closes out with light winds and dry and sunny conditions.
313 PM MDT Sat Apr 10 2021 Pleasant Saturday afternoon across the area with temperatures in the upper 50s to upper 60s, warmest across the lower elevations of far eastern Wyoming and western Nebraska. Surface cold front, which is forecast to push across the area beginning late tonight, is still moving southeast across Montana and Idaho this afternoon. Any precipitation associated with the cold front will be light and mainly well north of Interstate 80 towards sunrise Sunday.
313 PM MDT Sat Apr 10 2021 The ridge over this morning is currently headed east as a trough pushes into the region. Virga showers are following along the cold front at the moment to the west, but as the rest of the evening progresses, POPs increase and moisture will eventually mix to the surface. The initial wave today will have limited moisture, however as the low sites over the Northern Plains, a second wave from the north and any slightly westward extent with the band of moisture could bring the higher QPF, especially for those in the NE corner of the state. The highest chances for precip sits in the far east and over higher terrain where QPF maybe up to two tenths of a inch possible through the whole event.
627 PM CDT Sat Apr 10 2021 (This evening through Sunday) Mid-level winds are weakening as a trough continues to move further east away from our area. Through Sunday, forcing with this next trough will remain well north, but it will send a cold front southward into the area by evening. Preceding the cold front, enhancement of downslope flow component will support temperatures nearly 10 degrees above mid- April climo across our area.
It will be frosty tonight with low temperatures below freezing in most areas across Western Washington. A gradual warming trend will occur through the week ahead as high pressure builds toward the region.
An unsettled and cooler weather pattern is expected during the coming week. Widespread precipitation will continue in tandem with warm frontal propagation and jet supported ascent late this evening and into the overnight. Though the frontal progression is slow due to parallel wind orientation, rain showers will move out early Sunday morning as the low pressure centered in the southern Midwest propagates eastward. The closed low will be slow to depart and is progged to slowly transition east across northern IN and OH on Sunday. Sfc temperatures will be cooler behind the front on Sunday but still slightly above normal.
Otherwise, much cooler air will move in tonight with lows tomorrow 10-20 degrees colder than this morning/last night after today's cold front.
Main story here will be the potential for low level wind shear at KAMA tonight, and the cold front coming in tomorrow late afternoon/early evening.
amplifying into a broad, west-east elongated /nearly stalled/ upper level low over portions of the Northern Plains/Northern MS River Valley (Sun night). afternoon temps are ~10F warmer than yesterday). With this in mind, expect lows several degrees warmer than this morning. Sun-Sun night: A cooler/denser, evaporatively cooled airmass -- emanating from precipitation associated with a potent upper wave progressing across the northern Rockies -- will surge southward along the lee of the Rockies Sunday morning. the leading edge of which will manifest as an effective cold frontal passage /abrupt northerly wind shift/ around, and shortly after, sunrise (12-15Z). Fire Weather on Sunday: A cooler airmass, increased low-level moisture (initially, at least) in the wake of the frontal passage, and increasing upper level cloud cover (mainly in eastern CO) during the mid-late afternoon should temper minimum RHs.
Models continue to show light rain developing overnight and early tomorrow morning along a cold front. 500mb cutoff low over MO will begin to pivot eastward into the OH valley and as it does so a cold front will move toward the region and through the area early Sunday AM as the upper levels transition from SW flow to a drier WNW flow.
By tomorrow morning, the low will be moving to the north with winds picking back up as the LLJ wraps around the low with 40-50kts at 850mb. After a brief break in the rain during the early overnight hours, light rain will return after midnight as air continues to circulate around the low pressure. A stagnant upper level flow regime will develop across the lower 48 for much of the upcoming week. as an elongated trough extending westward across the far northern tier of the country eventually morphs into a quasizonal pattern anchored by deep lows across the Intermountain West and off the New England coast. subtle ridging will align across the central Plains and gradually amplify before shifting east into the region by late week.
647 PM CDT Sat Apr 10 2021 Opted to start the wind advisory a few hours earlier for parts of far western North Dakota, and started later Grant and Sioux counties based on latest analysis of the cold frontal passage timing. Current surface analysis places low over southern Saskatchewan, with a cold front dropping to the south. Upper level analysis places trough pushing into the Rockies, with ridge over our area. Change come tonight as the aforementioned cold front pushes east and aforementioned upper trough pushes east and deepens. With the cooler air pulling in behind the front, a mix of rain or snow is possible. On Sunday, aforementioned upper trough stops and closes off over the northern plains, resulting in likely precipitation over much of our area.
Regional radar loop this evening shows a band of showers approaching from the Ohio Valley associated with upper low over the midwest. The arrival of surface warm front should result in clearing skies later Sunday morning over the Allegheny Plateau. Focus for the afternoon will shift toward the potential of developing convection in narrow warm sector south of slow-moving warm front. Partly sunny skies in warm sector ahead of approaching cold front should jump into the low 70s over the south central counties Sunday afternoon, with 65-70F most likely elsewhere. Precip should end Sunday night from west to east fairly quickly as the cold front moves off the coast, but the rain chances for the rest of the week are far from over.
An unsettled and cooler weather pattern is expected during the coming week. Widespread precipitation will continue tonight in tandem with warm frontal propagation and encroaching upper low pressure. Showers will move out early Sunday morning as the low pressure digs eastward. The closed low will be slow to depart and is progged to slowly transition east across northern IN and OH on Sunday. Sfc temperatures will be cooler behind the front on Sunday but still slightly above normal.
Expect this activity to continue to wane over the next several hours as the sun sets and high pressure builds in. It will be frosty tonight with low temperatures below freezing in most areas across Western Washington. A gradual warming trend will occur through the week ahead as high pressure builds toward the region.
817 PM CDT Sat Apr 10 2021 Main forecast change this evening was the removal of mentionable PoPs as convection failed to develop late this afternoon and evening just ahead of the cold front. However, dry air will continue to filter into the area in wake of the cold front, and expect cloud cover to gradually dissipate over the course of the night -- with a mostly clear sky expected by daybreak Sunday morning. As winds veer to the WNW/NW, cooler air will also filter into the area and expect temperatures to fall into the mid to upper 40s by early Sunday morning. Therefore, expect temperatures will warm quickly into the low to mid 70s on Sunday.
A dry westerly to northwesterly flow over southeast Arizona with a ridge near the west coast and a broad trough downstream.
610 PM CDT Sat Apr 10 2021 VFR continues as high pressure draws closer tonight, before exiting the region on Sunday ahead of light SE breezes and some low clouds at CRP and ALI. The upper low over the Mid-Mississippi River valley will move northeast to the Great Lakes region Sunday with another upper low moving into the northern plains. A dry northwest flow aloft will remain over the region tonight with a weak short wave ridge moving into south Texas Sunday night.
542 PM CDT Sat Apr 10 2021 Strong gusty winds have developed under a dry slot associated with the low pressure system over the mid Mississippi Valley. Winds will be slow to subside this evening, since the low pressure center is deepening and low level lapse rates are forecast to remain steep well into the night. Highs will range from the mid 60s in parts of sw Indiana to the lower 70s in southeast Missouri, where sun will be prevalent.
Dry weather and above normal temperatures to continue for the next couple of days as high pressure remains over the area.
Almost all of the high resolution models indicate storms will develop over the northern Gulf early Sunday morning, then merge into a MCS that pushes south across the FL peninsula. Highs Sunday in the upper 70s, potentially in the low 80s as cloud cover and showers and storms move in through the morning.
925 PM CDT Sat Apr 10 2021 Summary: Cool and damp weather continues as a large area of low pressure moves north through Lake Michigan wrapping around bands of precipitation that will impact the Northland for several days. A large area of low pressure will slide up Lake Michigan into Sunday as it merges with an upper level low and elongates zonally across the Northland.
An unsettled and cooler weather pattern is expected during the coming week. Widespread precipitation will continue in tandem with warm frontal propagation and jet supported ascent late this evening and into the overnight. The closed low will be slow to depart and is progged to slowly transition east across northern IN and OH on Sunday. Sfc temperatures will be cooler behind the front on Sunday but still slightly above normal.
528 PM MDT Sat Apr 10 2021 Pleasant Saturday afternoon across the area with temperatures in the upper 50s to upper 60s, warmest across the lower elevations of far eastern Wyoming and western Nebraska. Surface cold front, which is forecast to push across the area beginning late tonight, is still moving southeast across Montana and Idaho this afternoon. Any precipitation associated with the cold front will be light and mainly well north of Interstate 80 towards sunrise Sunday.
644 PM CDT Sat Apr 10 2021 Tonight: Winds should diminish around sunset with ridge axis moving through overnight. Odds favor cooler than expected temperatures (and guidance) as return flow is weak.
Also increased cloud cover just slightly for some mountain wave clouds, and adjusted wind speeds and direction slightly for the cold front passage tomorrow morning. The upper level ridge that brought the mild temperatures and dry conditions today will slide off to the east as and upper level trough passes north of Colorado on Sunday. This will bring a cold front into northern Colorado around sunrise Sunday morning. It quickly tracks southward bringing gusty north/northeast winds and cooler temperatures. Highs Sunday afternoon will be about 10-15F cooler than today. Cool unsettled weather is expected through much of the period as an upper level trough moves across the Western U.
452 AM EDT Sun Apr 11 2021 A weak cold front will pass across the lower mid-Atlantic today into this evening as high pressure builds east along the Gulf coast region.
Dry cold front looks to lay along a line from Alliance to Scottsbluff to just north of Cheyenne. west to a low pressure system just west of Rawlins.
Main weather feature today will be a cold front that will move through western Kansas through the late morning hours and the cold air will probably lag by a couple hours behind the passage of the front.
The surface cold front has pushed into central North Dakota. After the initial surge of strong winds with the passing of the cold front, wind speeds will likely diminish a bit, for the previous reasons, but an uptick in speeds is expected this afternoon with the passing of the second front.
A clear night is ongoing across the area, allowing radiational cooling to kick into full gear as temperatures trend towards freezing at a few sites.
The cold front this morning remains west of the CWA and was draped across central AL and back into southern LA. For tonight, a few light showers cannot be ruled out across the eastern portion of the CWA for the first half of the night, however overall chances are on the low side. The cold front will exit the eastern portion of the CWA tonight.
246 AM EDT Sun Apr 11 2021 A cold front approaching from the west will cross the area late tonight.
Attention then turns to the arrival of a cold front with northeasterly winds following passage - expect this to arrive this evening.
MVFR to very localized IFR ceilings are expected to develop later tonight ahead of an approaching cold front, especially along and southeast of the I-65 corridor.
149 AM EDT Sun Apr 11 2021 Low pressure will slowly track across the lower Great Lakes into the beginning of the week.
A closed upper level low over the Dakotas will send a cold front through the region late tonight.
/19/ Expect mostly clear skies tonight with lows ranging from the upper 40s to the lower 50s. Tonight we can expect clear skies with lows ranging from the upper 40s to low 50s, which is cooler than the last couple of nights we've had. Tomorrow we shall continue this quiet/rain free set up as mid- level ridging settles in.
329 AM CDT Sun Apr 11 2021 08z WV satellite reveals an upper low over CMI, a northern stream wave over MT, and quasi-zonal west-northwesterly flow aloft over the Panhandles. At the surface, a cold front associated with the MT wave is beginning to push south through SE WY and the NE Panhandle. Sunday evening into the overnight hours, the aforementioned cold front will push south through the forecast area. Given progged surface pressure rises, 35-45 knot winds seen at 850mb, and the fact that our most recent cold front seemed to vastly overachieve despite weaker pressure rises and 850mb winds, have gone toward the high end of guidance sustained winds and gusts between 10pm and 4am.
Periodic shower chances will return later today, and continue through mid week, with crossing upper level lows. A partial clearing trend is expected after the rain ends, though clouds and scattered showers should move back across portions of the region mainly W of I 79 this afternoon as the low tracks east toward the Upper Ohio Valley region. Wind gusts from 25 to 30 mph are expected by afternoon with mixing, and a sufficient pressure gradient ahead of the low.
High pressure will control the weather through the period promoting clear skies with calmer winds at night increasing during the daylight hours on Sunday. Upper level low pressure over central Illinois will continue to pull off to the east this evening.
Today will be a sunny and breezy day with highs expected to reach the low to mid 70s. Satellite images showed a low pressure center spinning from Illinois into Indiana, and the low will roll toward the Motor City by evening. Here on the south side of the low, brisk west winds will bring in dry air.
Surface winds will become more westerly late this morning before turning to the north late tonight as a cold front moves through the region.
An upper low will be centered over central/southern Indiana by daybreak this morning, with an associated cold front moving east of the Appalachians by that time as well.
A piece of the low will move east toward the Mid Atlantic but the other piece of it will become absorbed in another low moving east across the upper Mississippi Valley.
301 AM CDT Sun Apr 11 2021 The occluded upper low over the Midwest will continue to slowly fill as it inches eastward over the next 48 hours. The pattern will remain somewhat stable for a few days given the large, blocking over eastern Canada, but this ridge will eventually break down by midweek as the pattern shifts. A ridge will build over the west with an associated trough in the east, representative of a the positive phase of the Pacific/North American teleconnection pattern. We'll see a lot of sun and temperatures in the low to mid 70s. We also won't be quite as cool overnight with low temperatures primarily in the lower 50s.
Regional radar loop late this evening shows a band of rain lifting into southwest Pa associated with upper low over the midwest. The arrival of surface warm front should result in clearing skies later Sunday morning over the Allegheny Plateau. Focus for the afternoon will shift toward the potential of developing convection in narrow warm sector south of slow-moving warm front. Partly sunny skies in warm sector ahead of approaching cold front should jump into the low 70s over the south central counties Sunday afternoon, with 65-70F most likely elsewhere.
Much cooler temperatures with highs 50 to 55. Weakening vertically stacked cyclone carries ewd through nrn IN Sunday. Regardless much cooler underneath cold pocket aloft with widespread light rain for most through the day. Tremendous downstream block persists this period over the n ATL/srn GL of which keeps elongated troughing aloft aligned through the nrn/ern lakes.
358 AM CDT Sun Apr 11 2021 An area of low pressure and associated cold front will push across the region today, bringing gusty northwesterly winds and cooler temperatures.