Aikyam-Lab/Synoptic-Bench huggingface dataset:
High pressure is building in from the west and winds have already gone light across much of the region. Scattered showers and thunderstorms will continue through this evening as a cold front moves across the region. High pressure will build in across the Mid-South for Tuesday and Wednesday leading to dry conditions and above normal temperatures each day.
356 AM EDT Tue Apr 30 2024 Showers and some thunderstorms will continue to push east through the area today as a cold front crosses the region. High pressure will then build in for the middle of the week with the return of much above normal temperatures.
- Cooler temperatures and frequent chances for precipitation continues for the rest of the week.
148 AM EDT Tue Apr 30 2024 A cold front will cross Lower Michigan tonight before slowly making its way across our forecast area on Tuesday.
1222 AM CDT Tue Apr 30 2024 - Showers/storms will precede a cold front's passage tonight.
- Dry and slightly cooler Tuesday. A weak cold front will then move across Se Mi in the 06Z to 09Z time frame. Inbound pre-frontal trough and 850 mb flow greater than 40 knots will continue to capitalize on this weak buoyancy to produce clusters of showers, with isolated thunderstorms, over the next several hours. A secondary window for sub-severe convection arrives overnight with the actual cold frontal passage. Southeast Michigan falls within the immediate post-cold frontal environment early Tuesday, as height fall emanating south of the parent circulation exiting into western Ontario expand across lower Michigan. Dry and stable conditions maintained through Tuesday night under transient low-mid level ridging.
340 AM EDT Tue Apr 30 2024 A cold front will slowly cross the area today with showers and the risk for a few thunderstorms.
This will help to dry things out and warm things up as temperatures return to the upper 80s to lower 90s for highs and overnight lows remain in the lower to middle 60s.
148 AM EDT Tue Apr 30 2024 Showers and some thunderstorms will occur tonight into Tuesday ahead of a cold front that will cross the region. High pressure will then build in for the middle of the week with the return of much above normal temperatures.
238 AM MDT Tue Apr 30 2024 - Cold front today with scattered showers.
137 AM EDT Tue Apr 30 2024 High pressure remains through today keeping conditions mostly dry. A cold front approaches from the west Tuesday morning. This will allow a cold front to approach from the northwest early Tuesday morning. The front briefly stalls across our north Tuesday evening, before lifting north as a warm front.
Zonal flow keeps warmer temperature and dry conditions in the forecast for today. Slight troughing on Wednesday will bring a slight cool down for the later-half of the week, but overall temperatures will remain near-normal for this time of year.
343 AM EDT Tue Apr 30 2024 Upper-level troughing will move across the southeast today, with a slight increase in instability for the Florida peninsula. At the surface, high pressure remains centered to our east, keeping a light southeast flow over the region that will give way to the sea breeze in the afternoon. Lingering troughing over the region for Wednesday combined with the sea breeze, will allow for a similar setup as far as rain chances go.
225 AM MDT Tue Apr 30 2024 - Cold front today with scattered showers.
Trends still look favorable for subfreezing temperatures tonight. Although it's a few days before our official start of Frost/Freeze products, given the warmer temps the past few weeks and ongoing agricultural interests across the area already, felt it prudent to issue a freeze warning accordingly. Most of the region should drop below freezing tonight. Temps will be cooler tomorrow with 40s and 50s in place across the region.
With a trough to our east and a Pacific ridge to our west, the Desert Southwest rests underneath a dry northwesterly flow aloft. An open wave trough will pass through the southeastern Great Basin on Wednesday, which will increase north-northwest winds across southern Nevada, southeastern California, and northwestern Arizona. Winds should remain below advisory levels, though isolated gusts to 40 mph cannot be ruled out in the higher terrain, particularly in northern Inyo, Esmeralda, and southern Nye counties.
Therefore, chances for showers do increase in this mid-week period as a result of the trough and moisture advection to around 30-40% PoPs, but the overall pattern and thermodynamic profile will still be semi- stable as dry air in the mid-levels lowers the instability in the region. Temperatures for the next two days will mostly be in the mid to upper 80s across South Florida, although some east coast locations will top out in the low 80s.
303 AM EDT Tue Apr 30 2024 High pressure in northern Quebec will extend south into Maine today. Low pressure tracks south of the Gulf of Maine Wednesday.
109 AM EDT Tue Apr 30 2024 High pressure builds in through Tuesday. Low pressure tracks south of the Gulf of Maine Wednesday.
1228 AM CDT Tue Apr 30 2024 (This evening through Wednesday) A weak and dissipating cold front is presently located in the northwest part of Arkansas, and will slowly make its way across much of the state overnight. Another point of concern tonight will be the development of fog as the weak cold front rolls into areas that recently received rain.
915 PM PDT Mon Apr 29 2024 Dry and seasonally warmer weather is forecast this week with night and morning low clouds over the coastal zones and western valleys. Over the weekend, stronger onshore will bring cooler weather and a deeper marine layer. Over the weekend a Pacific trough deepening down the coast will bring cooler weather, stronger onshore flow, a deeper marine layer, and gusty mountain and desert winds.
1014 AM EDT Tue Apr 30 2024 A slow moving cold front will make its way across the region this afternoon and evening while generating some showers and possibly a thunderstorm or two. The highest chance for thunderstorms will be east of the Genesee valley.
This should allow temperatures to drop to the low 60s across the area tonight.
1022 AM EDT Tue Apr 30 2024 Showers and some thunderstorms will continue to push east through the area today as a cold front crosses the region. High pressure will then build in for the middle of the week with the return of much above normal temperatures.
503 AM MDT Tue Apr 30 2024 - Cold front today with scattered showers.
Fairly weak shear and low coverage of the strongest storms should keep the severe weather threat on the low side. The highest chances appear to be at DHN and ABY, where VCTS is indicated in the TAF. Late tonight, areas of fog are possible with the highest chances of IFR conditions or lower around TLH. The pressure gradient will continue to relax as high pressure settles over the northeastern Gulf of Mexico.
A series of fronts will move through the region, bringing wet and cool conditions with drier, warmer breaks in between each system. The first trough in this series will slide north of us through WA State/northern OR today. With plenty of breaks in the clouds allowing heat to escape from the lower levels, especially in the southern and eastern portions of the region, lows this morning will be chilly. The Freeze Warning in the Illinois Valley (Josephine County) looks to be on track, as both the temperature and dewpoint have dropped into the mid-to-low 30s at the airport as of writing this, with further cooling to the low 30s expected a little later this morning. This will result in another chilly morning Wednesday followed by a warmer (compared to today's highs) afternoon.
1011 AM EDT Tue Apr 30 2024 A cold front passage this afternoon and evening will bring widespread rain showers and thunderstorms.
The highest coverage of rain and isolated lightning storms continues to be expected as the east coast breeze moves inland and encounters the Lake Okeechobee breeze, in addition to a later collision of the west and east coast sea breezes after 4-5 PM. The pgrad continues to weaken, with ESE/SE winds 10-16 kts into this evening, diminishing further overnight 5-11 kts as high pressure over the western Atlc weakens and pushes further seaward.
549 AM CDT Tue Apr 30 2024 (Today) Showers and embedded thunderstorms will continue to track east through the local area this morning, ahead of a weak cold front currently approaching the lower MS River Valley/lower OH River Valley.
623 AM CDT Tue Apr 30 2024 High pressure will build in across the Mid-South for today and Wednesday with dry conditions and above normal temperatures each day.
207 AM PDT Tue Apr 30 2024 Generally mild temperatures and increased breezes continue today, except cooler near the Oregon border. A dry cold front arrives on Wednesday, bringing cooler weather across the region.
The low level flow has shifted to more southerly and diminished some so with daytime heating we'll see the west coast sea breeze develop and push well inland this afternoon and evening with the best chances of seeing convection over the interior and east half of the Florida peninsula. Upper-level troughing will move across the southeast today, with a slight increase in instability for the Florida peninsula. At the surface, high pressure remains centered to our east, keeping a light southeast flow over the region that will give way to the sea breeze in the afternoon. Lingering troughing over the region for Wednesday combined with the sea breeze, will allow for a similar setup as far as rain chances go.
Offshore flow and high pressure will promote warming and drying for the interior, late in the week. The upstream ridging pattern continues although scant amounts of integrated water vapor can be seen rounding the isobars overlaid on the satellite imagery.
A stalled front will remain draped across central Utah today, separating a cooler and more stable airmass across northern Utah from a warmer airmass across the south. A secondary cold front will cross the region tonight, bringing additional cooling for Wednesday.
654 AM EDT Tue Apr 30 2024 A cold front passage this afternoon and evening will bring widespread rain showers and thunderstorms.
(Rest of Today) Rain is tapering off quickly this morning as a weak cold front shifts east of the area. Current satellite trends show rapid clearing across the western half of the region as drier air pushes in with the departing mid-level trough.
An active wx pattern continues as another low pressure feature drops into the region. Additional warnings may be needed for Wed and Thu mornings as well, although confidence is lower as some cloud cover may be running around (which could act as a blanket and keep sfc temps slightly warmer). Overall QPF amounts will remain quite low as well over the next several days, helping some of our rivers to ease back just slightly on their flows especially paired with cooler temps.
High temps today will be in the lower 80s across the east coast metro, to upper 80s over SW FL. Therefore, chances for showers do increase in this mid-week period as a result of the trough and moisture advection to around 30-40% PoPs, but the overall pattern and thermodynamic profile will still be semi- stable as dry air in the mid-levels lowers the instability in the region. Temperatures for the next two days will mostly be in the mid to upper 80s across South Florida, although some east coast locations will top out in the low 80s.
636 AM EDT Tue Apr 30 2024 Showers and some thunderstorms will continue to push east through the area today as a cold front crosses the region. High pressure will then build in for the middle of the week with the return of much above normal temperatures.
554 AM EDT Tue Apr 30 2024 - Dry and slightly cooler today.
An upper level trough will pass through the Intermountain West mid-week resulting in breezy conditions across the region.
Another day of quiet weather with afternoon breezes can be expected today with temperatures rising a few degrees warmer compared to yesterday. Temperatures remain warmer than average again on Wednesday. Lee troughing will be a bit deeper on Wednesday which will allow for breezier winds across the area that afternoon.
658 AM EDT Tue Apr 30 2024 A cold front will slowly cross the area today with showers and the risk for a few thunderstorms.
- Unsettled and cooler than normal conditions continue through the end of the week. Upper flow will become more westerly today as a broad, fairly diffuse trough swings to our north. There is not much moisture to work with, though, and the majority of the area will remain cooler and dry. Cyclonic flow increases this evening as the trough to our north becomes more organized and ejects a wave toward Wyoming. This will be most widespread across western Wyoming, where snow levels will drop to the valley floors as reinforcing cooler air arrives. On Wednesday flow becomes southwesterly as the trough axis begins to push into the area. Additional light snow will make it to the western valleys through the day, though warming temperatures above freezing should limit most impacts.
- Next cold front arrives late Wednesday. Water vapor shows broad upper low over the Pac NW and Northern Rockies, with distinct lead short wave over western SD. At the surface, low has shifted into central SD with cold front through our entire forecast area.
A low pressure system will then track by to the north of the region late tonight into Wednesday morning (across Lake Superior). Cooler air moves in behind this system Wednesday afternoon. Cold air advection behind the low pressure system likely leads to more instability clouds (especially north) Wednesday afternoon.
By this evening/overnight, high pressure will begin to settle into the Tennessee Valley.
However, like our summer convection the location of the highest rain chances will depend on the low level flow.
352 PM EDT Tue Apr 30 2024 - Dry and slightly cooler today.
With mostly sunny conditions, highs will range from the upper 70s in the northeast counties to the lower 80s in the far southwest. Upper level ridging will take place during the day on Wednesday, which will lead to very warm, almost summer-like temperatures in the mid to upper 80s under mostly sunny skies.
1208 PM CDT Tue Apr 30 2024 (Rest of Today) Rain is tapering off quickly this morning as a weak cold front shifts east of the area. Current satellite trends show rapid clearing across the western half of the region as drier air pushes in with the departing mid-level trough.
Tonight, low temperatures are forecast to bottom out in the low to mid 60s inland with upper 60s near the coast. Surface winds will be variable through the afternoon before once again becoming southerly with high pressure to our east.
Additionally, shower/storm training remains limited as the cold front progresses through.
High pressure will then prevail through late week, before a weak cold front stalls in the vicinity this weekend. Expect low temps to range in the low 60s well inland to mid-upper 60s near the coast.
Upper flow will become more southwesterly during the overnight hours as the upper trough over the western CONUS amplifies.
A broad area of showers and thunderstorms are expected to develop from Kansas southward into Texas ahead of a cold front and dryline.
Expect light winds, mostly sunny skies, and temperatures in the low to mid 80s this afternoon. AC3 High pressure will build in across the Mid-South for today and Wednesday with dry conditions and above normal temperatures each day.
At the surface, winds have been southeasterly for a majority of the afternoon, while winds just above the surface and through the lower levels are more southerly. The 12z sounding's convective temperature was 79F, and with temperatures in the lower 80s, it is suffice to say that a few bolts of lightning are not a surprise in the more robust storms. High pressure in the western North Atlantic has started to slowly weaken, and winds have dropped a few knots at marine observation platforms in the nearshore waters and at land-based observation sites. In terms of winds through the weekend, high pressure in the western North Atlantic will vary in terms of strength.
SCT showers and thunderstorms are expected this afternoon into evening, with the highest PoPs over interior South FL, however chances will remain along the coasts as well. Despite the trough axis moving east of the area overnight into tomorrow morning, residual moisture will linger across the area resulting in more SCT showers and thunderstorms on Wednesday. High temps this afternoon will range from the lower 80s across the east coast metro to upper 80s across SW FL. Temps will nudge higher a couple degrees on Wednesday with afternoon highs in the low to mid 80s across the east coast metro, to around 90 over interior SW FL.
128 PM EDT Tue Apr 30 2024 A cold front moves through today.
318 PM EDT Tue Apr 30 2024 A weak cold front is moving through this afternoon sparking off scattered showers and thunderstorms and a few of which could become severe with damaging wind gust being the main concern. Tomorrow will be about 10 degrees cooler than today. Some of the high res models have stripes of 1 to 2 inches with these storms through the evening so after the severe threat is over, a flash flood risk takes over. The trough axis moves east of the region after midnight with chances of precipitation dwindling quickly. Tomorrow will have slightly cooler aloft so temperatures will be about 10 degrees cooler than today but still above average.
1056 AM MDT Tue Apr 30 2024 - Cold front today with scattered showers.
148 PM PDT Tue Apr 30 2024 Seasonably warm and dry weather with breezy afternoon winds will prevail today before a dry cold frontal passage tonight brings cooler weather Wednesday.
Impacts should be pretty limited however and only light accumulations would be expected across the higher terrain. Urban centers around Burley, Pocatello and Idaho Falls may flirt with, or avoid, freezing conditions but the more rural locations will likely get there. An upper trough digging into the region tomorrow will bring us some cooler, slightly active weather for Wednesday. Given the cooler temperatures once again, some of this will be in the form of snow, despite the fact that it is May. This includes the lower valleys. Not expecting any issues with accumulations however given marginal temps and warmer ground temps but don't be shocked to see some flakes fall tomorrow.
Temperatures tonight will remain above normal and mild in the upper 50s to mid 60s with another surge of low level moisture and dewpoints in the lower 60s across much of the area.
200 PM EDT Tue Apr 30 2024 A slow moving cold front will make its way across the region this afternoon and evening while generating some showers and possibly a thunderstorm or two. The highest chance for thunderstorms will be east of the Genesee valley.
Though much of the low level moisture that resulted in fog this morning is expected to have eroded today, there may still be enough for patchy fog in some areas late tonight into tomorrow morning.
232 PM EDT Tue Apr 30 2024 A cold front exits the region tonight.
The expected hazards will be damaging wind gusts and hail; however, if any supercell can sustain themselves into the evening, there will be a short window of opportunity for a low tornado threat as the low- level jet strengthens with an attendant increase in low-level storm relative helicity. Additional thunderstorms are expected to develop across Kansas in association with a cold front, which will likely move southward into north central Oklahoma tonight.
To the south, expect temperatures to surge into the low-to mid-80s.
241 PM EDT Tue Apr 30 2024 A weak cold front is moving through this afternoon sparking off scattered showers and thunderstorms and a few of which could become severe with damaging wind gust being the main concern. Tomorrow will be about 10 degrees cooler than today. Some of the high res models have stripes of 1 to 2 inches with these storms through the evening so after the severe threat is over, a flash flood risk takes over. The trough axis moves east of the region after midnight with chances of precipitation dwindling quickly. Tomorrow will have slightly cooler aloft so temperatures will be about 10 degrees cooler than today but still above average. The short term will be dominated by ridging with temperatures above average through the period.
1244 PM EDT Tue Apr 30 2024 - Dry and slightly cooler today.
Weaker troughs will bring additional chances of showers later this week, but overall conditions will be calmer with mild temperatures.
A cold front will cross the region tonight, bringing additional cooling for Wednesday.
Fast-moving area of low pressure and associated cold front has reached the Upper Mississippi Valley late this evening. ranging from the low to mid 40s across Eastern Upper Michigan to the upper 40s and lower 50s across Northern Lower Michigan. A low pressure system will then track by to the north of the region late tonight into Wednesday morning (across Lake Superior). Cooler air moves in behind this system Wednesday afternoon. Cold air advection behind the low pressure system likely leads to more instability clouds (especially north) Wednesday afternoon.
(Tonight) Under the influence of upper level ridging, dry weather remains in place overnight as lows drop into the mid to upper 50s.
755 PM EDT Tue Apr 30 2024 A cold front exits tonight.
A weakening area of showers and storms continues to lift east northeastward this afternoon across central Iowa north of a warm front that is forecast to continue lifting across the remainder of the area. Winds have shifted to the south behind this warm front with gusts up to 25 mph. At 2 PM, temperatures range from 69 degrees at Dubuque to 79 degrees at Washington with dewpoints largely in the lower to mid 50s. The cold front will move across the area from west to east overnight with high pressure quickly building into the area at the surface and aloft. High temperatures on Wednesday are forecast to be in the lower to mid 70s. Model soundings show some mixing behind the cold front with gusts west winds developing Wednesday morning with gusts up to 25 MPH through the day.
917 PM EDT Tue Apr 30 2024 A cold front exits the region tonight.
High pressure will then prevail through late week, before a weak cold front stalls in the vicinity this weekend. The trough axis should shift offshore just before sunrise and the convective coverage is expected to diminish. Lows are expected to be a few degrees warmer than last night, with low to mid 60s across the area.
Weak surface ridging will build into the region overnight, providing subsidence which will erode most of the remaining cloud cover.
High pressure will remain across the waters with winds and seas below headline criteria.
Lows will be slightly warmer tonight, compared to last night, as they range from the upper 50s to middle 60s. Though much of the low level moisture that resulted in fog this morning is expected to have eroded today, there may still be enough for patchy fog in some areas late tonight into tomorrow morning.
To the south, expect temperatures to surge into the low- to mid-80s.
1012 PM EDT Tue Apr 30 2024 A cold front exits tonight.
Once this happens, we will have full sun all day as high pressure will be centered overhead through the lower to midlevels.
315 AM EDT Wed May 1 2024 -Showers give way to clearing skies and some patchy fog tonight -Warm/dry weather with lower humidity Wednesday-Thursday -Trending unsettled into the weekend with rain likely Sat/Sun THe only lingering showers are across the Lower Susquehanna Valley as of 10PM with all lightning activity now over. Highs on Wednesday in the middle 70s to near 80 are +10 to +15 compared to average and Thursday will a few degrees warmer for much of the Commonwealth.
An unsettled and cool pattern will continue the next several days as an upper level trough remains over the Northern Rockies.