Aikyam-Lab/Synoptic-Bench huggingface dataset:
104 AM EDT Mon Apr 25 2022 A passing cold front will bring rain showers and storms tomorrow afternoon and evening. Previous Discussion: The center of an amplified ridge axis overhead will gradually shift ewd today in response to a digging trough centered near Hudson Bay in Canada. Conditions tonight should be rather tantamount to that of today, as intensifying swly flow behind that departing ridge promotes increased cloud coverage towards daybreak Monday. That aforementioned Canadian trough should shunt occluded nrn Plains low pressure newd, eventually driving a cold front toward the area on Monday and increasing precipitation chances. Ahead of this, moist, warm advection in swly flow should support a marginally unstable boundary layer by afternoon as dewpoints reach the low 60s across north and western zones.
High pressure will maintain control of the weather across the area into the first part of the work week, bringing relatively quiet and warm weather along with it. 1113 PM MDT Sun Apr 24 2022 (25/06Z TAF period) VFR conditions continue through Monday as an upper level ridge of high pressure shifts east across the Northern Rockies and Montana. /ISSUED 300 PM MDT Sun Apr 24 2022/ In spite of high pressure situated over Northern Idaho, numerous fair weather cumulus clouds have developed across the area, with a few of these cumulus clouds just large enough to produce some light rain showers. The quiet weather will persist into the first part of the work week, as warmer air continues to arrive and help to build an upper level ridge across the area.
253 AM CDT Mon Apr 25 2022 Key messages: - Freezing temperatures are expected tonight along and north of Highway 36 with a frost expected further south as temperatures fall into the upper 20s to mid 30s.
431 AM EDT Mon Apr 25 2022 A cold front will bring rain showers and storms this afternoon and evening. Moist, warm advection in swly flow ahead of an approaching cold front progged to cross the forecast area this evening should support a marginally unstable boundary layer this afternoon /early evening across north and western zones.
215 AM EDT Mon Apr 25 2022 Warm and dry through this afternoon, and then a cold front brings showers and a few thunderstorms tonight. High pressure brings dry, cooler weather mid to late week. The summer preview of this past weekend continues to start the new work week today, ahead of a cold front approaching from the west. A flat wave over the central plains early this morning will lift through the middle Ohio Valley later this afternoon and this evening, which will just about manage to push the cold front through the area tonight.
High temperatures will be considerably cooler than they were yesterday. with readings ranging from the lower 50s northwest of the Illinois River to the lower 60s south of I-70. 07z/2am surface map depicts a cold front well east of central Illinois. As a wave of low pressure tracks along the front, showers will continue across the E/SE for the next several hours before pushing into Indiana by midday. Highs will range from the lower to middle 50s in the Illinois River Valley to the lower 60s south of I-70. High pressure will build into the Plains tonight, resulting in clearing skies and decreasing winds. Am expecting temps to bottom out near or below freezing along/north of a Beardstown to Bloomington line where a Freeze Warning will be issued. Further E/SE, temps will be slightly warmer in the middle 30s.
350 AM EDT Mon Apr 25 2022 Quiet and warm weather will continue today with offshore high pressure maintaining an influence on the area.
For now, opted to follow guidance, which has most of northern IL away from Chicago at or below freezing for low temps. It is worth noting that guidance can be too aggressive with breaking up stratus and if that is the case tonight, then low temps would likely be warmer than going forecast. If cloud cover hangs around and temps stay above freezing, then it will likely have been better to prepare for the reasonably plausible worst case scenario.
417 AM EDT Mon Apr 25 2022 A cold front will bring rain showers and storms this afternoon and evening. Moist, warm advection in swly flow ahead of an approaching cold front progged to cross the forecast area this evening should support a marginally unstable boundary layer this afternoon /early evening across north and western zones.
245 AM MDT Mon Apr 25 2022 Most recent water vapor and upper air models show closed upper low just north of the great lakes, upper ridge over the rockies, with northeast flow aloft our region. As we progress through the next few days, upper ridge slides over the northern plains, bringing return flow, and a warming trend.
As the H5 trough axis pivots over the region today, we expect to see below normal temperatures prevail while some transient mid clouds impact the region. Afternoon highs are expected to reach the lower 60s for most areas.
We may actually see 3 separate convective catalysts with the first being the pre frontal trough which should move through during the mid to late morning hours.
326 AM EDT Mon Apr 25 2022 Present surface analysis has the area within the warm sector which has and will continue to keep warmer temperatures in the region. However, off the west, a surface cold front is slowly crossing into the Bluegrass State.
The cold front is trailing behind, currently over central Arkansas. With the cold front not moving through until this evening, afternoon highs today will still get up into the low-to-mid 80s.
122 AM EDT Mon Apr 25 2022 Quiet and warm weather will continue through Monday with offshore high pressure maintaining an influence on the area.
Some mid level moistening expected this morning that could produce a mid cloud layer much of the day as an upper trough passes by just north of the area. The cold front has been south of the FA since early this morning and continues to slowly push southward across the Big Country into the Hill Country. We should start to see these storms push to the southeast by the evening as the cold front continues pushing southward. Scattered clouds will be possible through mid to late afternoon tomorrow as and upper trough passes through the region. Relatively benign weather is expected through much of the upcoming week as a broad upper ridge axis gradually builds and settles over the central US.
146 AM EDT Mon Apr 25 2022 High pressure remains in control today with another round of mostly clear to partly cloudy skies along with above normal temperatures.
Showers and thunderstorms currently extends across Arkansas this morning, along a cold front that will move into the Delta later this morning. With the low confidence in any severe thunderstorm activity, will continue to hold off mention in the HWO/Graphicasts. Lows will range from the mid 50s in the north to the low 60s in the south.
Upper ridging will remain dominant today, though beginning to flatten eastward as a wave of low pressure traversing across southern Canada pushes a cold front toward the region. PoPs will begin to increase from the northwest by late evening into the overnight hours as a broken area of showers and a few thunderstorms approaches ahead of the cold front.
341 AM EDT Mon Apr 25 2022 High pressure will prevail today.
1130 PM MDT Sun Apr 24 2022 Strong winds have continued across portions of southeast Wyoming & the western Nebraska Panhandle this afternoon, mainly for the high plains courtesy of ample low-level mixing & a belt of stronger 700 to 800 mb flow around 40 to 50 kts. Still have a few lingering snow showers, mainly in the vicinity of the Snowy Range, but would expect this activity to dissipate by this evening as the trough axis continues to shift eastward.
219 AM MDT Mon Apr 25 2022 Upper low continues to move east and away from us as high pressure aloft builds from the west. Otherwise, today will be a sunny, dry & warmer day underneath the ridge. Temps should reach the low 60s in our west (i.
A cold front continues to move from NW to SE across the state w/a complex of showers/thunderstorms moving across the state overnight and into Monday.
Clouds decrease through the day as low pressure treks off to the east, clearing from west to east. Temperatures remain well below average today, ranging from the lower 40s in southwestern MN to lower 50s along the MO River Valley. Despite cooler temperatures, lower humidity and the breezy conditions will lead to elevated fire concerns this afternoon. Tonight, upper ridging starts to build into the region, although northwesterly flow and weak cold air advection (CAA) aid in keeping overnight lows on the colder side, particularly east of I-29.
Tonight, a secondary cold front will drop across the area shifting winds northwesterly and dropping humidity levels. A broad CAA regime will promote partly cloudy skies and cooler temperatures tomorrow with highs in the upper 50s to lower 50s (so not much different than tonight).
(Today and tonight) Cooler and drier airmass has overspread the area in the wake of a storm system that brought heavy rainfall to parts of central and southern Oklahoma last couple of days.
109 AM EDT Mon Apr 25 2022 A cold front will approach from the west tonight and move across the area on Monday. Temperatures will remain above normal with overnight lows mainly in the low to mid 60s. In general, favored a somewhat faster solution as even if the actual front is slower, there is usually a pre-frontal trough that ends up forcing convection. Cooler air moving in will bring lows back into 40s Monday night, with some upper 30s possible in west central Ohio and east central Indiana.
An upper trough axis extending southwest from the upper low through eastern KS.
Dry conditions will continue overnight and into Monday as high pressure maintains control. Incoming cold front and associated showers still look to move in late Monday evening. KS Chattanooga Airport, TN 86 57 67 45 72 / 20 60 70 10 0 Knoxville McGhee Tyson Airport, TN 85 57 65 42 69 / 10 70 80 10 0 Oak Ridge, TN 85 55 65 41 69 / 20 70 70 10 0 Tri Cities Airport, TN 84 57 65 39 65 / 10 60 80 10 0.
1218 AM CDT Mon Apr 25 2022 (This evening through Monday) Early this afternoon, a cold front extended from near Wichita Falls, southwest to Abilene and then west to near Midland. The main challenge will be the potential for a few severe storms late this afternoon and evening, primarily along the cold front/dryline intersection. The main severe threat will be across western portions of the Concho Valley and northern Edwards Plateau through early evening, where a few discrete storms may develop near the dryline/cold front intersection, within a moderately unstable airmass. Temperatures will be much cooler behind the front tonight and Monday.
Thereafter, dry conditions and cooler than average temperatures take hold as high pressure builds into the region.
500 AM EDT Mon Apr 25 2022 Present surface analysis has the area within the warm sector which has and will continue to keep warmer temperatures in the region. However, off the west, a surface cold front is slowly crossing into the Bluegrass State.
An upper trough crossing northern New Mexico and southern Colorado will move east of the area later today, and should be somewhat successful with mid level moistening leading to patches of mid clouds today. Once this upper trough clears east, flow aloft will veer northwesterly and mid levels will dry tonight.
Clouds and a few light showers/sprinkles have wrapped around the departing area of low pressure this afternoon. but they will likely be at least close to freezing to start the day across much of the area Monday as a reinforcing shot of cold air pushes south.
328 AM EDT Mon Apr 25 2022 A cold front will bring rain showers and storms this afternoon and evening. Previous Discussion: The center of an amplified ridge axis overhead will gradually shift ewd today in response to a digging trough centered near Hudson Bay in Canada. Conditions tonight should be rather tantamount to that of today, as intensifying swly flow behind that departing ridge promotes increased cloud coverage towards daybreak Monday. That aforementioned Canadian trough should shunt occluded nrn Plains low pressure newd, eventually driving a cold front toward the area on Monday and increasing precipitation chances. Ahead of this, moist, warm advection in swly flow should support a marginally unstable boundary layer by afternoon as dewpoints reach the low 60s across north and western zones.
TAF's start off VFR and will stay that way until during the day on Monday as a cold front makes its way slowly across Middle Tennessee.
A mix of MVFR/IFR will prevail until 14-15Z when the low clouds will lift and dissipate. This comes in association with an upper trough and cold front located across this region.
Cold air advection today into early tonight will be replaced by clear skies and light winds late tonight as high pressure moves into Missouri. Expect lows to drop into the low to mid 30s over central and northern part of the CWA which will promote widespread frost.
VFR conditions to prevail through the day, with some upper/mid level clouds moving in this afternoon ahead of an approaching cold front. KS Chattanooga Airport, TN 85 58 68 45 72 / 10 60 60 0 0 Knoxville McGhee Tyson Airport, TN 83 57 66 42 69 / 10 70 70 0 0 Oak Ridge, TN 83 56 66 41 69 / 10 70 60 0 0 Tri Cities Airport, TN 82 57 65 39 64 / 10 60 80 0 0.
A ridge will begin departing the area today, though mainly sunny skies are in the forecast for the region. This is due to a high pressure system moving in the area, with an axis that is almost overhead at this time. By Tuesday, the main upper low will remain somewhat stationary just off the coast of British Columbia.
314 AM MDT Mon Apr 25 2022 High pressure continues to build across the Intermountain West with a deepening low pressure that continues pushing off to the northeast, dragging its associated cold frontal boundary across the eastern CONUS. Overall, no major changes to the short term, with a dome of high pressure building across the region, bringing warmer and drier air across the CWA. Should see daytime highs begin to trend towards seasonable averages today, and even in the low 70s by Tuesday afternoon. So far, current model guidance has wind speeds just under criteria for Tuesday under the upper level ridge pattern.
347 AM PDT Mon Apr 25 2022 Warmer and dry today with weak northeast winds near the coastal slopes of the mountains this morning.
An approaching cold front will bring increasing clouds today, but only a couple spotty showers or drizzle to northern portions of northwest California are expected through Tuesday.
Slightly warmer weather is expected for Tuesday, with continued quiet conditions and highs in the middle 30s to middle 40s.
High pressure will result in a steady warming trend to start the work week.
High pressure will begin to break down by this afternoon as an upper level trough of low pressure and associated cold front approach the region. Today will likely be the warmest day of the week, with temperatures approaching the mid to upper 60s for western Montana valleys and low 70s for the lower valleys of central Idaho. The cold front will move through western Montana and central Idaho during Tuesday.
1033 AM EDT Mon Apr 25 2022 A cold front will move across the area today bringing showers and thunderstorms. Cold front has made it into eastern Indiana. The cold front discussed in the Near Term will be pushing east of the area tonight as high pressure builds in from the west. Skies clear behind the front and cooler, drier air works in thanks to CAA. Forecast highs will be much cooler than this past weekend- in the middle 50s along and north of I-70 to 60 by the Ohio River. Breezy westerly winds could make conditions feel a bit cooler.
712 AM EDT Mon Apr 25 2022 Aviation -- Much cooler with some light rain today to the Southeast -- Latest sfc analysis and radar imagery as of 3 am indicates that the cold front has just about exited the area this morning. Another front also comes in, which will send 850 mb temps below freezing by 00z tonight. -- Some rain and snow showers possible on Tuesday -- The long wave trough will remain over the region on Tuesday, actually dipping over the area as a strong short wave helps to dig the trough. While there may be some light accumulations of snow in the grassy areas up north over the higher elevations, this should not be a big deal.
404 AM MDT Mon Apr 25 2022 Most recent water vapor and upper air models show closed upper low just north of the great lakes, upper ridge over the rockies, with northeast flow aloft our region. As we progress through the next few days, upper ridge slides over the northern plains, bringing return flow, and a warming trend.
For now, opted to follow guidance, which has most of northern IL away from Chicago at or below freezing for low temps. It is worth noting that guidance can be too aggressive with breaking up stratus and if that is the case tonight, then low temps would likely be warmer than going forecast. If cloud cover hangs around and temps stay above freezing, then it will likely have been better to prepare for the reasonably plausible worst case scenario. - Izzi Below normal temperatures continue into midweek with overnight lows Tuesday night expected to drop into the lower to mid 30s. With the area beneath high pressure, the combination of cold temperatures, light winds, and clear skies will bring the risk of frost across the area, with the exception being within the heart of the Chicago urban heat island.
959 AM CDT Mon Apr 25 2022 Getting a few reports of freezing rain/drizzle in our eastern tier of counties, something that is being overshot by radar and also not captured well by the models. Will include a mention for the next hour or so of freezing drizzle. Slightly warmer weather is expected for Tuesday, with continued quiet conditions and highs in the middle 30s to middle 40s.
508 AM MDT Mon Apr 25 2022 High pressure moving through the northern plains today with sunny skies and warm temperatures for most of the area. As lee trof develops over central Montana, southeast winds will begin to increase, but should remain Lake Wind criteria. A few showers are possible with this trof, mainly for the western zones.
We may actually see 3 separate convective catalysts with the first being the pre frontal trough which should move through during the mid to late morning hours. Look for clearing to commence by Tuesday afternoon with cooler temps.
High pressure will prevail across the region this week resulting in dry conditions and generally clear skies. A high pressure ridge will build across the Southwestern U. through Tuesday, while a quasi-stationary Pacific trough currently centered off the coast of British Columbia slowly expands to the southeast. For our region, the ridge will bring building heights and warming conditions over the next couple days. Highs Tuesday should be the warmest of the week with the NBM guidance showing the bulk of the lower deserts peaking in the upper 90s. This will be in response to an enhanced gradient that sets up across eastern Arizona and western New Mexico from a backdoor cold front moving westward through New Mexico.
629 AM CDT Mon Apr 25 2022 (Today and tonight) Cooler and drier airmass has overspread the area in the wake of a storm system that brought heavy rainfall to parts of central and southern Oklahoma last couple of days.
Upper level ridge moving over the Northern Rockies today will bring about pleasant conditions, with highs reaching the 60s to near 70, light surface winds, and dry conditions. transient ridging will slide east and over the Northern Rockies through the day today, before moving east over the Northern High Plains tonight as a deep H500 trough/closed low over the Eastern Pacific begins to move over the Pacific Northwest/British Columbia coasts.
/issued 521 AM CDT Mon Apr 25 2022/ Long anticipated surface cold front had pushed through northeast AR and the MO bootheel at 5 AM, and remained on track for passage through the Midsouth - exiting northeast MS - by around 3 PM CDT. There were a few elevated warm sector storms over north MS and west TN during the predawn hours, but the bulk of the rain later today is expected to occur along and immediately behind the cold front. A few strong storms will be possible toward midday and in the early afternoon, when cold front arrival is coincident with weakening surface-based convective inhibition and steep low level lapse rates. Forecast becomes rather tranquil by tonight, as cooler and dry air spreads into the Midsouth.
Cooler and drier weather early this week. Tuesday: Cooler and drier conditions will persist into Tuesday with high temperatures in the low 60s. Some limited fire weather conditions are possible with RH values in the low 30s. Wed/Thur: A broad ridge of high pressure looks to take hold over much of the central CONUS, bringing southerly winds and a slight uptick in temperatures.
A few degrees of cooling by Tuesday as a dry cold front passes over Northern California. The high clouds are associated with a weak dry cold front and an approaching upper level trough. The upstream cold front is forecast to move through the forecast area late Monday night and early Tuesday. The fropa will also usher in cooler temperatures and breezier conditions. Temperatures will drop 5-7 agrees on Tuesday with highs reaching the low 60s to mid 70s.
This will cause shower activity with snow becoming the predominant precipitation type over Minnesota while a wintry mix is expected in Wisconsin where temperatures are a little warmer.
Temperatures will be warmer today with highs in the 50s to around 60, with 30s and 40s in the mountains.
820 AM EDT Mon Apr 25 2022 An upper level ridge remains aloft the area today with a warm and generally dry stable airmass. coast eases to the east while ridging back across FL to the Gulf of Mexico. A cold front pushes through the waters Wed and is followed by high pressure with veering winds.
704 AM EDT Mon Apr 25 2022 A cold front will bring rain showers and storms this afternoon and evening. Minor updates to temperature were provided for the morning update to reflect ongoing, warmer than average conditions ahead of an approaching cold front. Moist, warm advection in swly flow ahead of an approaching cold front progged to cross the forecast area this evening should support a marginally unstable boundary layer this afternoon /early evening across north and western zones. Tuesday during the day will be noticeably cooler (back to below normal) and dry in the wake of the front.
Moderate to fresh easterly breezes will peak and lull through tomorrow in response to an upper level trough shoving a persistent ridge east into the central Atlantic.
208 AM MST Mon Apr 25 2022 High pressure will prevail across the region this week resulting in dry conditions and generally clear skies. A high pressure ridge will build across the Southwestern U. through Tuesday, while a quasi-stationary Pacific trough currently centered off the coast of British Columbia slowly expands to the southeast. For our region, the ridge will bring building heights and warming conditions over the next couple days. Highs Tuesday should be the warmest of the week with the NBM guidance showing the bulk of the lower deserts peaking in the upper 90s. This will be in response to an enhanced gradient that sets up across eastern Arizona and western New Mexico from a backdoor cold front moving westward through New Mexico.
521 AM CDT Mon Apr 25 2022 Long anticipated surface cold front had pushed through northeast AR and the MO bootheel at 5 AM, and remained on track for passage through the Midsouth - exiting northeast MS - by around 3 PM CDT. There were a few elevated warm sector storms over north MS and west TN during the predawn hours, but the bulk of the rain later today is expected to occur along and immediately behind the cold front. A few strong storms will be possible toward midday and in the early afternoon, when cold front arrival is coincident with weakening surface-based convective inhibition and steep low level lapse rates. Forecast becomes rather tranquil by tonight, as cooler and dry air spreads into the Midsouth.
This high then slides to the east for Tuesday, allowing gusty south winds to return to the area.