Aikyam-Lab/Synoptic-Bench huggingface dataset:
(This evening through Wednesday) Warm front will be returning overnight with return of low clouds across West Central Texas. A few light showers may also continue in that area in the morning, associated with the warm front.
210 PM CDT Tue Apr 26 2022 Tonight and Wednesday: Most light shower activity has now exited the area and clearing continues in the wake of a cold front. With surface ridging building in, expect mostly clear conditions to persist through the next 24 hours. At the surface, high pressure will extend down the Mississippi Valley. Calm winds and mainly clear skies will support another evening of efficient radiational cooling tomorrow night with temperatures falling into the low to upper 40s.
247 PM EDT Tue Apr 26 2022 Water vapor imagery highlights a sharp trough/ridge couplet over the eastern CONUS. A cold front stretches southwest from a low pressure system near the Delmarva. Temperatures across the Keys are in the lower to mid 80s, with dewpoints in the upper 60s. The trough/ridge couplet mentioned above will progress to the east tonight.
EPS/GEFS also showing some signal for measurable precipitation, though amounts are on the low side. There is some potential for light freezing rain or drizzle to occur Wednesday night, as forecast soundings show ice crystals being lost with temperatures around or below freezing.
246 PM EDT Tue Apr 26 2022 An approaching cold front brings scattered showers and thunderstorms through this afternoon and tonight. Drier, cooler air then infiltrates the area through most of the week. Cool and dry advection overnight will be more noticeable Wednesday afternoon as temperatures remain capped 10 degrees cooler than today's whereas dewpoints will tumble by twice that amount. Quiet period here, with high pressure continuing to sink in from the northwest.
MVFR CIGs will move into the region tomorrow morning as the low-level jet strengthens, affecting KCDS, KLBB, and KPVW, with winds shifting to the south/south-southwest.
249 PM CDT Tue Apr 26 2022 High pressure will slowly move east over the next two days. Despite even lighter winds Wednesday night, as the area of high pressure moves just northeast of the area, westerly to southerly low level flow should make for a warmer night. Lows should still drop into the lower to mid 40s though, given clear skies and lighter winds.
Rain showers are continuing to move east northeast across the forecast area late this morning behind a cold front that was moving into southwest Virginia and western North Carolina late this morning. Additionally, have included some tempo groups to show the possibility of the lower vis with some locally heavier showers. Winds out of the northwest as the surface cold front departs the region to the east.
1159 AM EDT Tue Apr 26 2022 Much cooler temperature is expected the remainder of the work week with scattered rain and snow showers tonight and Wednesday. Otherwise, todays showers with a crossing longwave trough/cdfnt will slide east of the ridges this afternoon. Redevelopment of scattered rain and snow showers is expected develop tonight as cold upper low digs over the region. High pressure will then maintain dry conditions the remainder of the week and into the weekend.
especially across the western counties where the higher terrain could pick up a coating to an inch. then Canadian high pressure will offer fair cool weather for the remainder of the week. weak sfc based ridging should keep us from receiving any pcpn. with some of the higher terrain possibly receiving an inch. As the lower portion of the boundary layer warms during the day Wednesday. Max temps on Wednesday will struggle to climb above 40 across the lake plains while the higher terrain will remain in the 30s. Drier air working south into the region Wednesday night ahead of a wedge of Canadian high pressure will result in clearing from west to east. An upper level ridge will build across our region to start this period.
Kept the trend warmer for Wednesday and bumped up temps a bit more into the mid 80s for much of the CWA.
Rain showers are continuing to move east northeast across the forecast area late this morning behind a cold front that was moving into southwest Virginia and western North Carolina late this morning. However lower ceilings behind the cold front now east of the Appalachians have been slow to clear. Additionally winds out of the northwest will be gusty behind the cold front this afternoon and should continue tonight and Wednesday at KCHA.
200 PM EDT Tue Apr 26 2022 Clearing and cold tonight with subfreezing temps expected for most.
1007 AM MDT Tue Apr 26 2022 The state is currently under a ridge with moisture streaming in from the west. Temperatures will be almost 15 degrees warmer than yesterday with increased fire danger for the lower elevations. An upper level ridge will build into the area today, as a sfc lee trough becomes established, along the front range. For tonight, outside of some mid and high levels clouds, it will remain dry with breezy conditions over the higher terrain.
314 PM CDT Tue Apr 26 2022 Per building northerly surface based ridging influences building into mid state region as tonight progresses, some areas of frost possible for locations east of I-65 Corridor late tonight, and especially across higher elevations of Upper Cumberland Region. Issued a frost advisory for Cumberland, Fentress, and Pickett counties from 3 AM CDT to 7 AM CDT Wednesday, where the higher elevations of these counties could experience lows in the mid 30s.
The upper pattern is expected to be quasi-zonal for much of the period, with a flat/low amplitude ridge building over the SCNTRL CONUS.
Showers and isolated afternoon thunderstorms will be in the forecast today with an upper trough moving onshore. Drier weather on Wednesday as the trough moves out of the area.
By afternoon, most areas will be sunny, but still cool as Highs are expected to only reach the Low 60s which is several degrees below seasonal normals.
Continued upper-level ridging will keep temperatures mild on Wednesday.
Cold nw to n low-level flow persists, in advance of high pressure entering far nw Ontario. Heights aloft will be sharply rebounding overnight as the upper low pivots away. High Impact Weather Potential: None Pattern Synopsis: Troughing will continue to slide east into New England on Wednesday as broad upper-level ridging settles in over the central CONUS. High pressure looks to remain in place through the remainder of the work week as a lee cyclone develops over the southern Great Plains. Forecast Details: With high pressure building into the Great Lakes, quiet weather is in store for northern Michigan through the second half of the work week.
Stratus in the exiting upper trough will continue to exit from he northeast this morning. Upper ridging builds in from the west helping to usher in some warmer air. To aid the ridge, southeast winds will provide good mixing ahead of an approaching low pressure system, especially across central SD. Temperatures will range from the lower 50s in the northeast to the mid 60s in south central SD. The main challenge in this period will revolve around the low pressure system that is forecast to move through the region the end of the week and through the upcoming weekend.
Issued by National Weather Service Twin Cities/Chanhassen MN 221 PM CDT Tue Apr 26 2022 Visibile satellite imagery this afternoon shows extensive cloud cover across most of the area, although it has been breaking up slowly from northwest to southeast as drier air on the backside of the upper trough works into the region.
Temperatures tonight and Wednesday night will be chilly with overnight lows dipping into the low to mid 30s in many areas.
The forecast will follow the coldest guidance, a blend of the lowest 10th percentile of nbm members.
---BMickelson Previous discussion: Tightening pressure gradient will occur across northeast Montana today as lee trof begins to strengthen and move eastward. As the trof moves east tonight, a few showers are possible, mainly for the western zones.
High pressure will move into the region for Wednesday.
Issued by National Weather Service Des Moines IA 218 PM CDT Tue Apr 26 2022 Key Messages: - Temperatures will creep up a couple degrees each day through the end of the week but remain well below average - Light precipitation possible periodically through the end of the week with a stronger system into the weekend Discussion: A large upper level low is departing the area today, lifting across the Great Lakes region and into New England. With the departing low moving east and a second low building to the southwest, the area will benefit from weak thermal ridging into the area, allowing temperatures to warm a few degrees each day through the end of the week.
200 PM EDT Tue Apr 26 2022 A cold front will push offshore this evening. A secondary cold front will drop through the region Wednesday. Canadian high pressure will follow through the end of the week.
Temperatures will max out here shortly and then fall into the low-mid 50s this evening. For Wednesday, mostly sunny conditions are expected with slightly warmer temperatures. Highs should top out in the mid 60s across southern Indiana, with the bluegrass region of central Kentucky remaining in the lower 60s.
Chilly highs in the lower to middle 40s are expected in northern parts of the area, with upper 40s to the south. There'll be a bit of a lull, before a deeper 500mb trough sinks south into the Great Lakes Region late this morning and into the afternoon hours. Activity should then wane going into the evening hours as the trough axis moves east.
233 PM MDT Tue Apr 26 2022 Current surface analysis shows low pressure over far southeast AB, with a nearly stationary warm front stretching southeast across eastern MT and into western SD. Upper level analysis shows ridge axis over the northern high Plains, with low pressure over the western Great Lakes and another off the BC coast. Seasonably mild and mostly dry weather is expected to continue through midweek as ridge gradually moves over and eventually east of the area by late week.
/DL/ Light rain showers and clouds continue to steadily decrease this morning in the wake of a cold front. The cold front has moved well east of the area this morning, but some residual showers continue in the southeast. These showers will continue to be possible through the morning in the southeast, but high pressure will continue to build in through the day with clearing skies and cooler temperatures. As cool high pressure settles in overnight, lows will fall into the low to mid 40s across the area.
Upper level jet energy is progged to work through the basal subgeostrophic portion of the trough emerging in the eastern flank evening. So, while the trough has been a little sheared this morning, the forecast data points to a tightening and deepening reponse to the circulation by this evening. Height falls in advance of this upper level low center have driven the synoptic lift reponse thus far. The cold midlevel 850mb temperatures at around -9 to -10C arrive at the right time coincident with the heart of the potential vorticity trough axis and the period that will be favorable for a short duration of midlevel deformation forcing.
147 PM EDT Tue Apr 26 2022 Aviation -- Showers Today -- Upper-level trough (closed low at 500 mb) and 850 cold air advection will leave us prone to showers developing today, reaching their peak in the afternoon with diurnal instability.
256 PM EDT Tue Apr 26 2022 A strong cold front is moving through the Mid-Atlantic Region. Skies will clear tonight as brisk northwest winds bring cooler temperatures to the area for mid-week. Brisk northwest winds with much cooler temperatures tonight The passage of a cold front is bringing an end to our string of warm weather.
300 PM EDT Tue Apr 26 2022 In the wake of a cold front, dry and cooler high pressure will build into the region tonight through Wednesday night, with temperatures then steadily recovering late week into the weekend. The cold front that is helping to drive this activity has slid through the western half of the CFWA and should complete the fropa later this evening. Post-frontal regime will be in store on Wednesday as high pressure continues to nose in from the north and northwest flow aloft will keep the vertical profile completely dry. Expect mostly sunny skies and a very pleasant day with high temperatures a few ticks below normal outside of the mountains and 5-10 degrees F below normal in the higher elevations where residual wind gusts will help keep temperatures cool throughout the daytime period.
Westerly flow then continues through the day with the main ridge axis to our east. This combined with a thermal ridge has allowed warmer temperatures than yesterday for the rest of today and Wednesday.
616 PM EDT Tue Apr 26 2022 In the wake of a cold front, dry and cooler high pressure will build into the region tonight through Wednesday night, with temperatures then steadily recovering late week into the weekend. The cold front that is helping to drive this activity has slid through the western half of the CFWA and should complete the fropa later this evening. Post-frontal regime will be in store on Wednesday as high pressure continues to nose in from the north and northwest flow aloft will keep the vertical profile completely dry. Expect mostly sunny skies and a very pleasant day with high temperatures a few ticks below normal outside of the mountains and 5-10 degrees F below normal in the higher elevations where residual wind gusts will help keep temperatures cool throughout the daytime period.
807 PM EDT Tue Apr 26 2022 The cold front will cross the area through early tonight.
Temperatures are cooling quickly as a drier air mass advects into the area behind an exiting cold front. 58/rose Previous short-term discussion: /Updated at 0154 PM CDT Tue Apr 26 2022/ The cold front continues to push southeastward through Central Alabama early this afternoon, with cooler and drier air pushing southeastward. Much cooler air filters in overnight tonight, and we'll see widespread 40s across much of the area.
/EC/ Prior discussion below: Tonight and Wednesday: Most light shower activity has now exited the area and clearing continues in the wake of a cold front. With surface ridging building in, expect mostly clear conditions to persist through the next 24 hours. At the surface, high pressure will extend down the Mississippi Valley. Calm winds and mainly clear skies will support another evening of efficient radiational cooling tomorrow night with temperatures falling into the low to upper 40s.
Cooler temperatures and breezy afternoons are forecast for midweek.
Only some high level cloudiness is expected during the night, and with the drier air, cooler temperatures will occur with overnight lows in the low to mid 50s which will be some 10F degrees below seasonal norms. In addition to gusts, winds will pick up a more easterly component as the high pressure drifts northeastward.
An upper trough over the area through Wednesday for a few rain showers.
747 PM EDT Tue Apr 26 2022 A cold front will move offshore tonight.
1007 PM EDT Tue Apr 26 2022 A cold front will impact the region tonight followed by high pressure into late week. Cold front is edging toward the western portion of the CWA with a few showers along the boundary, particularly in South Carolina.
530 PM CDT Tue Apr 26 2022 Key Messages: - Temperatures will creep up a couple degrees each day through the end of the week but remain well below average - Light precipitation possible periodically through the end of the week with a stronger system into the weekend Discussion: A large upper level low is departing the area today, lifting across the Great Lakes region and into New England. With the departing low moving east and a second low building to the southwest, the area will benefit from weak thermal ridging into the area, allowing temperatures to warm a few degrees each day through the end of the week.
/EC/ Tonight and Wednesday: Most light shower activity has now exited the area and clearing continues in the wake of a cold front. With surface ridging building in, expect mostly clear conditions to persist through the next 24 hours. At the surface, high pressure will extend down the Mississippi Valley. Calm winds and mainly clear skies will support another evening of efficient radiational cooling tomorrow night with temperatures falling into the low to upper 40s.
823 PM EDT Tue Apr 26 2022 A cold front will impact the region tonight followed by high pressure into late week.
757 PM EDT Tue Apr 26 2022 Early evening water vapor satellite imagery shows a band of moisture aloft across northern Florida associated with a weak approaching cold front. The forecast looks on track overall with isolated to scattered showers and storms developing again Wednesday afternoon, mainly along the sea breeze boundary as the cold front pushes into the Florida Peninsula and stalls out.
High pressure continues to expand across the area and is acting to push afternoon Cu over the NE counties further east. The center of the high will move through the area overnight allowing for winds to instead become light and variable. Best chance for temperatures to drop below freezing will be from Carroll to Henry counties and to the north. However, thinking there is a higher potential for near to below freezing temps in the far NE so went ahead with a freeze warning in that area. At the same time, isentropic lift over a weak warm front starting to push north into the area will allow cloud coverage to increase for the end of the period.
Winds will remain gusty at NEW and MSY through the overnight hours as cooler air moving over the warmer waters of Lake Pontchartrain allow for some thermal mixing of stronger boundary layer winds down to the surface.
In addition to gusts, winds will pick up a more easterly component as the high pressure drifts northeastward.
647 PM EDT Tue Apr 26 2022 A strong cold front is moving through the Mid-Atlantic Region. Skies will clear tonight as brisk northwest winds bring cooler temperatures to the area for mid-week. Just a line of showers now along the cold front from about Lynchburg, VA to Winston-Salem, NC. The lows tonight in the 30s and 40s will be the beginning of a cool spell, especially compared to the warmth we have been experiencing. Brisk northwest winds with much cooler temperatures tonight The passage of a cold front is bringing an end to our string of warm weather.
High pressure will slowly move east over the next two days. Despite even lighter winds Wednesday night, as the area of high pressure moves just northeast of the area, westerly to southerly low level flow should make for a warmer night. Lows should still drop into the lower to mid 40s though, given clear skies and lighter winds.
755 PM EDT Tue Apr 26 2022 In the wake of a cold front, dry and cooler high pressure will build into the region tonight through Wednesday night, with temperatures then steadily recovering late week into the weekend. The cold front that is helping to drive this activity has slid through the western half of the CFWA and should complete the fropa later this evening. Post-frontal regime will be in store on Wednesday as high pressure continues to nose in from the north and northwest flow aloft will keep the vertical profile completely dry. Expect mostly sunny skies and a very pleasant day with high temperatures a few ticks below normal outside of the mountains and 5-10 degrees F below normal in the higher elevations where residual wind gusts will help keep temperatures cool throughout the daytime period.
1053 PM EDT Tue Apr 26 2022 A strong cold front is moving through the Mid-Atlantic Region. Skies will clear tonight as brisk northwest winds bring cooler temperatures to the area for mid-week. Elsewhere it is clear as colder and drier air filters in behind the cold front. Temperatures are dropping steadily and winds are dropping off, but should remain a little gusty as high pressure edges in from the west. Just a line of showers now along the cold front from about Lynchburg, VA to Winston-Salem, NC. The lows tonight in the 30s and 40s will be the beginning of a cool spell, especially compared to the warmth we have been experiencing. Brisk northwest winds with much cooler temperatures tonight The passage of a cold front is bringing an end to our string of warm weather.
Per building northerly surface based ridging influences building into mid state region as tonight progresses, some areas of frost possible for locations east of I-65 Corridor late tonight, and especially across higher elevations of Upper Cumberland Region. Issued a frost advisory for Cumberland, Fentress, and Pickett counties from 3 AM CDT to 7 AM CDT Wednesday, where the higher elevations of these counties could experience lows in the mid 30s.
838 PM EDT Tue Apr 26 2022 Much cooler temperature is expected the remainder of the work week with scattered rain and snow showers tonight and Wednesday. Redevelopment of scattered rain and snow showers is expected develop tonight as a cold upper low digs over the region with northwest flow. High pressure will then maintain dry conditions the remainder of the week and into the weekend.
641 PM CDT Tue Apr 26 2022 Visible satellite imagery this afternoon shows extensive cloud cover across most of the area, although it has been breaking up slowly from northwest to southeast as drier air on the backside of the upper trough works into the region.
An upper level trough will bring showers and a slight chance of thunderstorms today. GOES water vapor imagery shows an upper level low situated over Haida Gwaii as of 2 PM with its axis swinging east over the Pacific NW. This southwesterly flow to the north ahead of the trough axis coupled deformation in the mid levels is contributing to thunderstorms in NW Washington.
659 PM CDT Tue Apr 26 2022 The most notable adjustment for this update was to introduce freezing rain as a possible precipitation type for the weak wave passing through western and north central North Dakota later tonight. CAMs' simulated precipitation types and NBM type probabilities favor freezing rain as a conditional type due to a warm layer above the surface. Westerly flow then continues through the day with the main ridge axis to our east. This combined with a thermal ridge has allowed warmer temperatures than yesterday for the rest of today and Wednesday.
This will lead to an overall active weather pattern into the weekend, though the forecast area will be on the southern periphery of these troughs. None of these troughs look particularly strong at this time, so the overall weather will be beneficial with snow levels lingering in the 3000-5000 ft range.
West-southwesterly flow aloft will turn northwesterly this evening as the axis of an upper-level trough passes over our region. As the trough pushes off the Eastern Seaboard, upper-level ridging builds in over the central US. At the surface, a weak cold front, currently draped across our FL panhandle counties, will continue moving southeastward. Deep-layer ridging will remain in place through Wednesday, resulting in a mild, sunny day. Lows tonight will range from the mid to upper 40s for the northern half of the region, to the low to mid 50s for areas south.
616 PM EDT Tue Apr 26 2022 The cold front will cross the area through early tonight.
936 PM EDT Tue Apr 26 2022 A cold front will push offshore this evening. A secondary cold front will drop through the region Wednesday. Canadian high pressure will follow through the end of the week.
841 PM EDT Tue Apr 26 2022 A cold front will move well offshore overnight. Drier and cooler air infiltrates the area through most of the week. Cool and dry advection overnight will be more noticeable Wednesday afternoon as temperatures remain capped 10 degrees cooler than today's whereas dewpoints will tumble by twice that amount. Quiet period here, with high pressure continuing to sink in from the northwest.
610 PM CDT Tue Apr 26 2022 (This evening through Wednesday) Warm front will be returning overnight with return of low clouds across West Central Texas. A few light showers may also continue in that area in the morning, associated with the warm front.