Aikyam-Lab/Synoptic-Bench huggingface dataset:
Wood (Issued 346 PM CDT Thu Aug 31 2023) Tonight through Friday night: High pressure over Michigan will continue to gradually slide eastward, setting the stage for southerly winds on Friday, which will raise our daytime highs to the low to mid 80s. Dry and sunny conditions will continue throughout the region thanks to the subsidence from the departing high pressure. A low pressure sliding across southern Canada is expected to tighten the pressure gradient, leading to some 20mph gusts across our northern and western CWA Friday afternoon.
609 PM CDT Thu Aug 31 2023 (Tonight through Friday night) Surface pressure gradient remains very weak as ridging builds in from the west with a cutoff mid-level low developing over North Texas. There is a very slight chance of patchy fog development over the Coastal Plains late overnight into sunrise with dewpoints recovering into the low to mid 70s under mostly clear skies and calm winds. Dewpoints in the upper 50s to near 70 tomorrow will allow for max temperatures to climb to around the triple digit mark across most of South Texas and the low 70s along the coast. Typical summer nights with lows in the low 70s inland to around 80 along the coast.
749 PM EDT Thu Aug 31 2023 Aviation - Quiet weather into Friday night High pressure centered over MI will shift east southeast into Friday. We may see some thickening of the clouds then as isentropic lift increases and moisture spills over the upper level ridge over the Upper Plains.
730 PM EDT Thu Aug 31 2023 High pressure over our region tonight and Friday will gradually move away to the southeast during the course of the long holiday weekend. anomalously strong H5 ridge centered over the heart of the country will nose across the Lower Great Lakes through Friday night. it will be quite cool (downright chilly Srn Tier) with mins ranging from the lower 50s along the lake shores and across much of the lake plain to the low to mid 40s across the Srn Tier and Lewis county.
113 AM EDT Fri Sep 1 2023 Aviation - Quiet weather into Friday night High pressure centered over MI will shift east southeast into Friday. We may see some thickening of the clouds then as isentropic lift increases and moisture spills over the upper level ridge over the Upper Plains.
The upper ridge currently situated over the Plains will persist into the weekend while light southerly surface flow in response to lee troughing helps keep temperatures above normal. Highs both today and tomorrow will reach the upper 90s to low 100s for nearly every location while a few lucky people in the higher terrain may be slightly cooler in the 80s. With the position of the ridge just off to our northeast, even skies will remain clear through the short term with nil storm chances, and it seems like the beginning of September will simply be an extension of August.
The main concern through Saturday (as well as into the extended) will the be the trend toward warmer temperatures.
Mid/upper level high pressure currently centered across the TX Panhandle, will continue to bring dry subsident air across S TX today through Saturday. Today's weather is expected to be very similar to yesterday's with mostly sunny skies and highs ranging from the lower 90s along the coastline to around 103 along the Rio Grande. A mid/upper level low, currently centered across LA, is progged to track west tonight into Saturday. This will bring the low across E TX with it's trough axis extending southwestward to Deep S TX. The upper low will bring slightly deeper moisture across the northwestern Gulf of Mexico, leading to isolated/scattered convection across the Coastal Waters.
1225 AM CDT Fri Sep 1 2023 (This evening through Friday night) An upper-level ridge, currently centered on New Mexico, will move northeast through the Panhandles and into the Central Plains by Saturday morning. This supports temperatures up to a few degrees warmer than today.
208 AM CDT Fri Sep 1 2023 High pressure dominates at the sfc today with ridging building aloft. Temperatures will be warmer today as we kick off a warming trend heading into the holiday weekend. Expect highs in the low to mid 80s today with mostly clear skies and light winds. Highs will be in the mid to upper 80s as ridging continues to build aloft.
1240 AM CDT Fri Sep 1 2023 (This evening through Friday) A low pressure system will develop over the lower MS river valley through the day today and move to the west towards Texas through the day on Friday. At the same time, high pressure tries to develop behind the westward shift of the low pressure system, and over the Appalachians.
300 AM EDT Fri Sep 1 2023 Canadian high pressure will extend across the middle Atlantic and Carolinas through Saturday. There were a few high clouds associated with an upper level disturbance to our SW and a few stratocumulus over the higher terrain with the upslope flow early this morning - otherwise it was clear and cool. High pressure will dominate today and tonight. High pressure will continue to dominate across the domain through the weekend.
122 AM EDT Fri Sep 1 2023 High pressure will build across the area and persist through the holiday weekend. Sunshine should be prevalent for most, but an upper low over Louisiana could send some high clouds our way later this afternoon into tonight mainly across the southern VA into NC area. Will depend on how far north and how opaque the high clouds are tonight, on temperature impacts, but still should be fairly cool for the 1st weekend of September with lows again mainly in the lower to mid 50s, with possible 40s in places like the Greenbrier Valley. The models are in excellent agreement with high pressure maintaining control across the Mid Atlantic throughout the weekend.
1050 PM CDT Thu Aug 31 2023 (Tonight) Other than some high clouds spreading into the area from the SSW, quiet/tranquil wx conditions will prevail across the central TN Valley into early Fri, as high pressure remains layered from the OH Valley SW into the lower MS Valley. Given the increase in high clouds, overnight temps will trend a few degrees warmer compared to this morning, with lows mainly in the lower/mid 60s.
339 AM EDT Fri Sep 1 2023 (Today through Saturday) 500mb analysis shows the CWA sandwiched under a ridge that is situated between an upper low to the west and a longwave trough to the east. The longwave trough to the east will begin to shift off to the east later today, but the upper low to the west will remain nearly stationary. A high pressure ridge is off to the NE. This ridge will build down into the area tonight, bringing lower dewpoints to much of north and central GA. Along and south of the front is where the deepest moisture resides, so that is where the highest pops will be today. The front may try and creep a little northward this afternoon before being pushed back south by the advancing ridge. The highest pops/instability will be south of I-20 today.
335 AM EDT Fri Sep 1 2023 Large high pressure over the eastern Great Lakes today will move to the east coast by tonight. Superb weather to kick off the first day of September across the eastern Great Lakes as a strong, expansive mid-level ridge drifts across the region. Not quite as chilly with lows in the mid 50s for most and upper 40s across the hilltops as weak southerly flow developing on the backside of the high begins to advect warmer air into the region. Saturday and Saturday night a mid level trough will move east across Ontario and Quebec, with the southern end of the trough brushing by the eastern Great Lakes late Saturday afternoon and evening. Several convectively enhanced vorticity maxima may move through the trough as well, bringing a period of large scale ascent Saturday evening.
321 AM EDT Fri Sep 1 2023 High pressure in the Great Lakes will move southeast and settle in the Mid Atlantic through Saturday.
(Today through Saturday) A low pressure system is developing along the coast and will slide north and west today and into Saturday.
319 AM EDT Fri Sep 1 2023 Broad high pressure dominates over the eastern US today through Saturday.
(Today through Saturday) The short term period will feature hot and mostly rain-free conditions as Deep South Texas remains on the subsident side of a cut-off low centered over the western Gulf of Mexico.
25 (Tonight through Saturday night) High pressure to the north continues to create conditions for hot, dry, and sunny weather. The impacts from this high is creating a much drier airmass for Lake Charles than usual with our PWAT values in the bottom 10%, for this time of year. With the return of the higher dew points comes the higher temperatures with the return of triple digits on Saturday.
223 AM EDT Fri Sep 1 2023 Dry weather is expected through the holiday weekend courtesy of building high pressure. Some of the mountain valleys will get down into the low to mid 40s. High pressure remains in control throughout Friday and Friday night, providing for continued dry weather. Highs will be in the low to mid 80s across the lowlands, with upper 60s and 70s for the higher terrain. Low temperatures will be a bit warmer than this morning, with low 50s to low 60s for the lowlands, and mid 40s to mid 50s for the higher terrain. The ridge evolves eastward out of the Central Plains beginning on Saturday, imposing the warming trend to ensue.
As it skates towards South Florida, the boundary will meet an air-mass rich with lingering moisture from the tail of Post-Tropical Cyclone Idalia, and the combination of abundant moisture and synoptic forcing will result in convection firing ahead of the front late this afternoon. Temps will once again reach the low to mid 90s during the afternoon hours before the boundary arrives and convection overspreads the area.
927 PM PDT Thu Aug 31 2023 Cooler through the weekend, with the greatest cooling on Friday. Mid clouds are moving across the region in the south to southwest flow aloft ahead of a deepening low/trough over the west coast. A deepening low/trough over the west coast will bring cooler conditions through the weekend, with the greatest cooling on Friday. The low/trough will also draw mostly mid-level moisture northward across SoCal, bringing a slight chance of showers and thunderstorms through Saturday. There remains significant uncertainty in the details of the forecast but most of the high-resolution guidance suggests that the most likely location for potentially more significant rainfall would be the eastern deserts of Southern California Friday afternoon and evening.
356 AM EDT Fri Sep 1 2023 A cool start to September this morning as temperatures hover 5 to 10 degrees below average in the low 50s (slightly higher near Detroit), owing to exceptional radiational cooling conditions under clear skies overnight. Will see temperatures climb quickly this morning under abundant sunshine, although daytime highs will still hold in the 70s as the thermal trough lingers for one last day. Benign local conditions are tied to high pressure that has begun drifting east and will strengthen today as it phases with the ridge axis aloft. The resultant flow aloft becomes predominantly zonal with southwest winds at the surface, together drawing in a much warmer airmass that is pooling upstream.
1033 PM CDT Thu Aug 31 2023 (This evening through Friday) The mid-level ridge across the southwest U. The ridge will continue to move eastward tomorrow as a closed-low develops across the west coast. As a result, forecast temperatures will continue their gradual increase tomorrow with a ~595 dam ridge centered across northwest Oklahoma/Kansas. The end result is above-average temperatures are forecast (ranging from the low 90s across the northeast to low 100s deg F across the southwest). Heat indices are forecast to be similar (or even lower!) than the air temperature with the lower dew points.
(Today and tonight) An upper-level ridge remains centered over the central Plains and extends southwestward across west Texas this morning. This should allow low temperatures to be a few degrees warmer tonight.
(Today) Moisture convergence is forecast by several models to increase significantly between an upper low situated over Louisiana and an inverted trough axis extending northwest from the eastern Gulf of Mexico this afternoon.
117 AM PDT Fri Sep 1 2023 A significant cooldown will start today and last through the weekend, with high temperatures today anticipated to be 10 degrees cooler than seasonal.
High pressure surface and aloft will gradually build over the Florida peninsula through the weekend.
We are on the east side of a closing off upper low that will be moving back toward Dallas over the next 48hr. As the upper low moves west, it will open the gulf up for a stream of deep moisture to flow daily for the next several days. The high precip numbers are not there to show that there will be rain all day, but instead are showing the overall 12hr chance that any particular point will get rain.
Upper low spinning over Manitoba will move off into Ontario today. Afternoon RH values will be in the 30 to 40 percent range, and enough points are in the lower end of that range across western MN to continue the SPS for near critical fire weather concerns. Upper ridging builds into the Plains tonight and tomorrow, with some model solutions bringing a weak ridge rider into SD and breaking out some precip just to our southeast overnight. Surface winds on Saturday will turn back to the southwest and south as a trough develops over the High Plains. There is high confidence from cluster analysis depicting ridging though the weekend with greater than 80% agreement on H850 temps over 24C along and south of HWY 2.
This will bring in much warmer temperatures than yesterday along along with gradual higher humidity.
/NEW/ /Through Saturday/ Seasonably hot and dry weather will persist as we enter meteorological fall due to a nearby stagnant upper low over East Texas. This feature will slowly drift westward along the southern periphery the upper ridge axis over the next couple of days, and we'll remain positioned beneath the dry northwestern quadrant with its attendant shower and thunderstorm activity confined to parts of Southeast Texas and Louisiana.
122 AM EDT Fri Sep 1 2023 High pressure in the Great Lakes will move southeast and settle in the Mid Atlantic Friday.
Upper level analysis shows low tracking east-northeast across south central Canada, with high pressure building across the southern Rockies into the southern Plains. Hotter conditions return for today and the weekend as upper high and ridge strengthen across the central and southern Plains over the next couple of days.
239 AM MDT Fri Sep 1 2023 Satellite imagery showed a ridge over our region while a deepening upper trough over the Pacific NW was resulting in a southwest flow transporting mid level moisture through Utah and Idaho into SW Montana. As the upper trough sinks south and deepens the next couple of days it will continue to induce ridging over the high plains and warm air advection into our region. Look for mid 80s west to lower 90s east today, and most areas a couple degrees warmer yet on Saturday with many locations in the mid 90s. However, lower levels are initially on the dry side today (dewpoints in the 40s), and just low PoPs will mainly be confined to the higher terrain and foothills as easterly low level winds place a cap on the plains.
A deep trough digging into the Pacific coast has pushed our subtropical high pressure area eastward into a more favorable placement for monsoonal activity. Scattered showers and thunderstorms over the high terrain this afternoon are just a taste of what is to come. Short-term models largely agree on convective development this evening in the low deserts of Arizona.
312 AM EDT Fri Sep 1 2023 Dry weather is expected through the holiday weekend courtesy of building high pressure. Some of the mountain valleys will get down into the low to mid 40s. High pressure remains in control throughout Friday and Friday night, providing for continued dry weather. Highs will be in the low to mid 80s across the lowlands, with upper 60s and 70s for the higher terrain. Low temperatures will be a bit warmer than this morning, with low 50s to low 60s for the lowlands, and mid 40s to mid 50s for the higher terrain.
808 PM PDT Thu Aug 31 2023 The low pressure system which brought today's showers will move south of the region overnight.
/Issued 1234 AM CDT Fri Sep 1 2023/ /Through Saturday/ Seasonably hot and dry weather will persist as we enter meteorological fall due to a nearby stagnant upper low over East Texas. This feature will slowly drift westward along the southern periphery the upper ridge axis over the next couple of days, and we'll remain positioned beneath the dry northwestern quadrant with its attendant shower and thunderstorm activity confined to parts of Southeast Texas and Louisiana.
High pressure in the Great Lakes will allow dry warm advection today and tonight, but with dewpoints in the 50s, it will be nice summer day today. Highs today will be in the lower to mid 80s Tonight, evening winds will be 5 to 10 mph from the south, but with dry air, temperatures will lower through the lower 70s during the the evening.
As Idalia continues to push further east, this cutoff low will have a greater influence on the low-level flow.
902 PM PDT Thu Aug 31 2023 Low pressure sliding down the coast from the Pacific Northwest will bring continued cooling into the weekend.
1125 PM CDT Thu Aug 31 2023 Patchy clouds are moving southwestward through portions of the Quad State region this afternoon with northeasterly flow south of the Great Lakes high pressure system. Mostly clear skies and calm winds tonight allow temperatures to drop to the low to mid 50s as dew points remain low. Ridging will build again over the middle of the country, with an upper low developing along the Gulf Coast of TX/LA. Lows trend warmer as well, in the lower 60s Friday night and mid-60s Saturday night. High pressure remains over the Appalachians while a system moves into the High Plains. Models shift the ridge eastward but disagree on positioning of the upper low in the Central Plains.
Pattern-wise, the upper low supporting the front to our south will eventually be overtaken by the high pressure ridge spreading east and moving over top of it. This will help funnel warmer temperatures our way in the coming days. So, today will be a couple of degrees warmer than yesterday.
1217 AM CDT Fri Sep 1 2023 (Tonight through Friday night) Surface pressure gradient remains very weak as ridging builds in from the west with a cutoff mid-level low developing over North Texas. There is a very slight chance of patchy fog development over the Coastal Plains late overnight into sunrise with dewpoints recovering into the low to mid 70s under mostly clear skies and calm winds. Dewpoints in the upper 50s to near 70 tomorrow will allow for max temperatures to climb to around the triple digit mark across most of South Texas and the low 70s along the coast. Typical summer nights with lows in the low 70s inland to around 80 along the coast.
(Today and tonight) Temperatures today will be above average again as upper level high pressure remains overhead with forecast highs in the low to mid 90s on the Caprock and near 100 degrees off the Caprock. Forecast highs today are nearly the same or a bit warmer compared to yesterday due to a slight increase in upper air heights as the center of the upper level high drifts northeast.
1015 PM PDT Thu Aug 31 2023 The low pressure system which brought today's showers will move south of the region overnight.
Any fog that does form should dissipate quickly after sunrise and Friday should be another sunny day under the influence of the high. The upper level ridge to our west will continue building overhead on Friday, and this combined with strong insolation will push high temperatures up into the low to mid 80s. The upper level ridge will continue building over the Midwest this weekend, bringing above normal temperatures back to Missouri and Illinois. Along with warm temperatures locked in by the upper level ridge, we'll probably see heat index values approaching 100 degrees again. The operational GFS continues to strengthen the upper low which is currently over the west Louisiana, east Texas Gulf Coast on Saturday.
220 AM MDT Fri Sep 1 2023 Upper-level ridging prevails across the Treasure State next few days, keeping most locations mostly sunny and warm with some isolated showers and thunderstorms developing in Southwest Montana.
148 AM EDT Fri Sep 1 2023 High pressure will build across the area and persist through the holiday weekend. Sunshine should be prevalent for most, but an upper low over Louisiana could send some high clouds our way later this afternoon into tonight mainly across the southern VA into NC area. Will depend on how far north and how opaque the high clouds are tonight, on temperature impacts, but still should be fairly cool for the 1st weekend of September with lows again mainly in the lower to mid 50s, with possible 40s in places like the Greenbrier Valley.
303 AM EDT Fri Sep 1 2023 Canadian high pressure will extend across the middle Atlantic and Carolinas through Saturday. There were a few high clouds associated with an upper level disturbance to our SW and a few stratocumulus over the higher terrain with the upslope flow early this morning - otherwise it was clear and cool. High pressure will dominate today and tonight. High pressure will continue to dominate across the domain through the weekend.
To the south, a stacked area of low pressure near the Gulf Coast is nearly stationary below the expanding ridge to the north. With the ridge building overhead we'll start to see temperatures warming about 5 degrees today over what we saw yesterday.
837 AM EDT Fri Sep 1 2023 High pressure in the Great Lakes will move southeast and settle in the Mid Atlantic through Saturday.
-Stalley Previous Discussion: /Through Saturday/ Seasonably hot and dry weather will persist as we enter meteorological fall due to a nearby stagnant upper low over East Texas. This feature will slowly drift westward along the southern periphery the upper ridge axis over the next couple of days, and we'll remain positioned beneath the dry northwestern quadrant with its attendant shower and thunderstorm activity confined to parts of Southeast Texas and Louisiana.
A weak upper-level low over the Lower Mississippi Valley will bring a chance for rain showers and perhaps a thunderstorm to the Mid-South this weekend.
628 AM EDT Fri Sep 1 2023 High pressure will build across the area and persist through the holiday weekend. Sunshine should be prevalent for most, but an upper low over Louisiana could send some high clouds our way later this afternoon into tonight mainly across the southern VA into NC area. Will depend on how far north and how opaque the high clouds are tonight, on temperature impacts, but still should be fairly cool for the 1st weekend of September with lows again mainly in the lower to mid 50s, with possible 40s in places like the Greenbrier Valley.
639 AM CDT Fri Sep 1 2023 (Today) Moisture convergence is forecast by several models to increase significantly between an upper low situated over Louisiana and an inverted trough axis extending northwest from the eastern Gulf of Mexico this afternoon.
Synoptic analysis places a building anticyclone over the Eastern United States, with cyclonic flow in the west-central Gulf of Mexico. Rain and thunder chances will be limited this afternoon to possible broken, weak cloud line formation along portions of the Lower Keys or any activity across the South Florida Mainland progressing southward to the Middle and Upper Keys. With temperatures already near 90F, well on their way to the lower to mid 90s, and dewpoints hovering around 80F, went ahead and issued a Heat Advisory through the early evening hours. From synopsis, an expanding high pressure system will continue to build across the Eastern United States thist afternoon and tonight, while the remnants of Idalia stall near Bermuda.