Aikyam-Lab/Synoptic-Bench huggingface dataset:
/NEW/ /Through Thursday/ Today marks an inflection point in our temperature trends, as the previous several days of below normal readings give way to near/slightly above normal values in response to upper level ridging establishing itself over the region. For tonight and tomorrow, it'll similarly be a few degrees warmer as high pressure dominates, with lows in the mid/upper 60s warming into the low/mid 90s for the afternoon.
A 1025-1027 mb Canadian high pressure was over Hudson Bay into central Ontario and ridging into the upper MS river valley. Aloft a mid/upper level trof was over eastern Canada into the Great Lakes and OH/TN river valleys. A stronger upper level low/trof was over the Pacific states (568 dm 500 mb low in northern CA) while upper level ridging in between over the Great Plains. Temps at 230 pm were in the low to mid 80s with Taylorville and Effingham the hot spots at 88F. Comfortable dewpoints in the low to mid 50s over central IL and mid 50s to around 60F in southeast IL with light to calm winds across the area. A weak short wave trof to track se across central and southeast IL into early evening.
Aloft, a trough extended from the upper Great Lakes through the lower Ohio Valley and was slowly moving east. There is slight mid level cooling beneath the trough. NAM forecast soundings are more moist in the lower levels than the GFS and suggest there could be some sprinkles or very isolated showers. Once the trough moves past on Thursday night, dry weather and clear skies should finish out the short term period.
109 PM EDT Wed Sep 10 2025 High pressure maintains control over the area through much of the week, yielding a stretch of dry weather amid a subtle warming trend. Overall mainly dry conditions continue in the near term period with high pressure in control.
226 PM EDT Wed Sep 10 2025 High pressure will remain to our north late this afternoon into tonight as a wave of low pressure passes offshore to the southeast. A dry front will dissipate as it approaches on Thursday, then another area of high pressure will drift toward New England this weekend, resulting in continued dry conditions. Low pressure off of the mid-Atlantic Coast will send moisture and areas of drizzle inland into much of our region late this afternoon into tonight.
A fairly strong mid/upper ridge is set to build into the central plains throughout the afternoon and nighttime hours.
Water vapor and upper level analysis show a closed low over CA with an upper ridge axis across the plains. Temperatures have warmed into the low to mid 80s so far this afternoon with dew points in the mid to upper 50s. Overnight lows should be warmer in the low to mid 60s for most locations. On Thursday, we see the upper ridge start to build further north and east into the forecast area. Temperatures should be a bit warmer in the upper 80s to mid 90s.
Temperatures are expected to dip down into the upper 50s with areas near the lake and in the City remaining in the low 60s. As an upper level ridge builds to the west, dry conditions are expected tomorrow. The warming trend for temperatures will continue tomorrow as many interior locations climb into the low 80s in the afternoon. The upper level ridge will continue to grow through the weekend as a pair of upper level lows flank it in southern Canada.
While Thursday morning lows will be a couple degrees warmer than this morning, they will still remain several degree below normal, ranging from the mid 50s to low 60s.
Mid to upper level ridging is expected to remain over Texas through the end of the week and will help limit rain development over much of the local area.
1213 PM EDT Wed Sep 10 2025 High pressure maintains control over the area through much of the week, yielding a stretch of dry weather amid a subtle warming trend. Overall mainly dry conditions continue in the near term period with high pressure in control.
As the upper level troughing to our east continues shifting east, the large upper level ridging over the central CONUS will shift east as well and become dominant over our CWA. This will help continue our warming trend and allow temperatures to top out warmer than normal; in the low to mid 90s. In addition to the ridging aloft, surface ridging from the northeast will continue across our CWA. This will continue to limit the return of deep moisture over our CWA and help keep morning lows slightly warmer than normal as well.
121 PM EDT Wed Sep 10 2025 High pressure remains in control of our weather through the rest of the week and into the weekend.
129 PM PDT Wed Sep 10 2025 A low moving into California is ushering in cooler temperatures with highs for inland areas 10 to 15 degrees below average today and Thursday.
139 PM EDT Wed Sep 10 2025 High pressure will remain in control into this weekend, with mostly sunny skies and seasonable temperatures.
219 PM EDT Wed Sep 10 2025 - Pleasant weather continues with light winds and highs into the low to mid 80s over the next several days.
High pressure centered near Hudson's Bay extends southward into the eastern CONUS with the ridge axis west of the region locking in low to mid- level northeast flow.
853 AM PDT Wed Sep 10 2025 A low pressure system moving slowly into the western states continues to spread cooling inland with high temperatures for inland areas 10 to 15 degrees below average today and Thursday.
136 PM EDT Wed Sep 10 2025 As an upper level troughing deepens, high pressure will prevail at the surface into the weekend. Tonight: Dry high pressure will continue to prevail across the region through the overnight. Temperatures will be around normal for this time of year as highs reach into the mid to upper 80s through the weekend, with overnight lows in the low to mid 60s inland and upper 60s along the coastline.
200 PM EDT Wed Sep 10 2025 A cold front will approach from the north and cross the region Thursday.
Low temperatures overnight are forecast to drop into the low to mid 60s under mostly clear skies.
The CONUS is characterized today by significant storm systems in the west and east with a stout ridge of high pressure in between extending from central Mexico well into the Canadian Provinces. The system along the Pacific coast will slowly drift eastward across the northern CONUS as an increasingly embedded feature within the ridge.
The low pressure system about 100 miles off our coast has also shifted slightly south.
1027 AM PDT Wed Sep 10 2025 * A low pressure system will bring gusty winds, cooler temperatures, and dry conditions to the Desert Southwest this week.
1247 PM EDT Wed Sep 10 2025 High pressure will dominate the weather pattern through the next seven days with dry conditions and near to above normal daytime temperatures. -Dry airmass remains with slightly cooler temperatures. Strong ridging east of the Appalachians will continue to control our weather through tonight. Although pwat readings remain below an inch, with the higher values residing along the coastal plain through the period. This shows up in the dewpoint fields, with dewpoint values in the low to mid 60s east, and the mid to upper 50s west. The higher moisture should lead to a little more cloud cover across the east this afternoon and into tonight. Key message(s): - Surface ridging and calm weather expected through the end of the week.
(Through tonight ) Disturbance across KS and remnant MCV in northern OK will continue to move east today as a mid-level ridge builds northward into the High Plains. Will continue to carry thunder given steep mid-level lapse rates present with the trough. (Tomorrow through Wednesday) The ridge continues to amplify across the southern Plains through the end of the week before a western U. trough begins to squeeze the ridge axis eastward over the weekend. The combination the expanding thermal ridge and increasing southerly flow will help afternoon temperatures warm into the lower 90s on Thursday and further into the middle 90s over the weekend.
With light winds and a clear sky overnight, we'll see another good night of radiational cooling with temperatures approaching their afternoon dewpoints, in the low to mid 50s. Upper ridging continues to nudge in from the west on Thursday and we'll see temperatures warm another few degrees from today, into the 80s for most, with continued low humidity.
215 PM EDT Wed Sep 10 2025 Persistent dry conditions characterized by pleasant afternoon temperatures and morning fog for river valleys continues with high pressure in place through mid week. A dry cold front will move through Thursday bringing northerly breezes and possibly enhancing fire weather concerns given dry vegetation associated with ongoing drought. High pressure will remain over the region through the near term, aside from a weak surface cold front which will drop across the area on Thursday. On Thursday the aforementioned weak surface cold front drops across the area and will mainly only notice an increase in clouds and gusty winds out of the north. Gusty winds could lead to some fire weather concerns, but dewpoints will be higher due to cold frontal passage.
it was fun while it lasted, but the heat and humidity are on its way back as mid to upper level ridging builds in from the west.
844 PM EDT Wed Sep 10 2025 High pressure will dominate the weather pattern through the next seven days with dry conditions and near to above normal daytime temperatures. Cooler temperatures in the west as a result in the mid to upper 50s to low to mid 60s in the eastern area. Key message(s): - Surface ridging and calm weather expected through the end of the week.
702 PM EDT Wed Sep 10 2025 High pressure maintains control over the area through much of the week, yielding a stretch of dry weather amid a subtle warming trend. Overall mainly dry conditions continue in the near term period with high pressure in control.
A weak cold front will move through the region Thursday through Thursday night, however little to no impacts are forecast.
740 PM EDT Wed Sep 10 2025 High pressure will aid in quiet and predominantly dry weather through the forecast period. Broad area of low pressure offshore maintains northerly flow across the region. Slow clearing should occur on Thursday with highs in the low 80s with some late-day peeks of sunshine. Despite an upr-level trough pivoting through the area, mid and upper levels remain quite dry, so anticipating mainly mostly sunny/clear skies, partly cloudy near the coast Thursday night.
Active weather and cooler temperatures continue as a slow moving system brings scattered shower and isolated thunderstorm chances through Thursday, with the best potential Wednesday afternoon through evening.
745 PM EDT Wed Sep 10 2025 As upper-lvl troughing deepens, high pressure will prevail at the surface into the weekend. Tonight: High pressure will prevail across the region through the overnight. The forecast remains dry, but temperatures are expected to remain a few degrees warmer than the previous night given some high clouds in place. Temperatures will be around normal for this time of year as highs reach into the mid to upper 80s through the weekend, with overnight lows in the low to mid 60s inland and upper 60s along the coastline.
Next vort max wrapping around upper trough in the Gulf to move over SE Gulf and SW FL with another high PoP day Thursday. The low pressure system about 100 miles off our coast has also shifted slightly south.
252 PM PDT Wed Sep 10 2025 * A low pressure system will bring gusty winds and cooler temperatures to the region over the next few days.
- No appreciable rain chances are on the horizon as upper-level ridging will continue to dominate the region. This is certainly more reminiscent of a mid-summer regime dominated by an upper-level ridge will only expand deeper into our region as we move through the end of this week and into the upcoming weekend. This upper ridge will serve to deflect any progressive disturbances or frontal boundaries attempting to shift south toward our region, keeping us rain-free with above average temperatures for the foreseeable future. Winds becoming calm overnight under high pressure influence, becoming variable Thursday 5kts or less.
725 PM EDT Wed Sep 10 2025 High pressure remains in control with sunny skies and seasonable temperatures through the end of the week.
Flow aloft will be out of the north, with flow at the surface being generally light and variable in relation to the high pressure center. As the upper level troughing to our east continues shifting east, the large upper level ridging over the central CONUS will shift east as well and become dominant over our CWA. This will help continue our warming trend and allow temperatures to top out warmer than normal; in the low to mid 90s. In addition to the ridging aloft, surface ridging from the northeast will continue across our CWA. This will continue to limit the return of deep moisture over our CWA and help keep morning lows slightly warmer than normal as well.
940 PM EDT Wed Sep 10 2025 High pressure will remain to our north tonight as a wave of low pressure passes offshore. A dry front will dissipate as it approaches on Thursday, then another area of high pressure will drift toward New England this weekend, resulting in continued dry conditions. While low pressure is pulling away from the Mid Atlantic coast, north to northeast winds continue to advect moisture and clouds into the eastern half of the CWA.
752 PM EDT Wed Sep 10 2025 Offshore frontal boundary and area of low pressure track farther out in the Atlantic into tonight.
WEATHER PATTERN OVERVIEW: Most of the forecast attention is focused on the approaching low pressure system from Oregon and Idaho.
740 PM EDT Wed Sep 10 2025 * A mainly dry and seasonable weather pattern is expected to continue for much of the next 8 days * The exception will be when some light showers may fall over the northern half of PA Sat night-Sun night as a weak and moisture challenged front nears/passes A few, weak inverted troughs at llvls were helping to maintain a bkn-ovc deck of mid to high end strato cu across the Lower and Mid Susq Valley early this evening and this cloud cover will likely hold in place for most or all of the overnight hours (through 10-12Z Thu). We can further see the impacts of these troughs by the NWWD bulge in the RAP'S 925-850 mb Theta-E field (From SE PA to near KUNV, KSEG and KHZL). High pressure continues to rule.
703 PM EDT Wed Sep 10 2025 Persistent dry conditions characterized by pleasant afternoon temperatures and morning fog for river valleys continues with high pressure in place through mid week. A dry cold front will move through Thursday bringing northerly breezes and possibly enhancing fire weather concerns given dry vegetation associated with ongoing drought. High pressure will remain over the region through the near term, aside from a weak surface cold front which will drop across the area on Thursday. On Thursday the aforementioned weak surface cold front drops across the area and will mainly only notice an increase in clouds and gusty winds out of the north. Gusty winds could lead to some fire weather concerns, but dewpoints will be higher due to cold frontal passage.
Within this area of clouds and showers, temperatures are some 5-10 degrees cooler than surrounding areas, with temperatures recovering quickly as the clouds exit. Tonight, continued troughiness in the mid-levels combined with lingering mid-level moisture along and west of I-65 will support at least isolated rain showers. Low temperatures should be milder, ranging from the low-to-mid 50s in the deepest valleys in east central KY to the mid 60s across southwestern KY. At the surface, the Ohio Valley will be on the southern fringe of high pressure centered over Hudson Bay, with light northerly winds bringing drier air into the area by tomorrow night. While the better forcing will be exiting the region with the mid-level trough, there could be enough instability for a few showers and storms to pop up tomorrow afternoon, especially across south central KY.
632 PM EDT Wed Sep 10 2025 - Pleasant weather continues with light winds and highs into the low to mid 80s over the next several days.
/Issued 1257 PM CDT Wed Sep 10 2025/ /Through Thursday/ Today marks an inflection point in our temperature trends, as the previous several days of below normal readings give way to near/slightly above normal values in response to upper level ridging establishing itself over the region. For tonight and tomorrow, it'll similarly be a few degrees warmer as high pressure dominates, with lows in the mid/upper 60s warming into the low/mid 90s for the afternoon.
255 AM EDT Thu Sep 11 2025 High pressure will aid in quiet and predominantly dry weather through the forecast period. However, with abundant dry air above a subsidence inversion at 700mb, if any precipitation does develop in the low levels (like the CAMs are showing) it will be very light. Mostly clear skies tonight with low temps in the low 60s, potentially near 60F along and west of I-95.
Troughing remains over the eastern CONUS, helping temperatures stay fairly mild and pleasant despite the dry conditions.
Upper air pattern is set up with a ridge from Kansas to North Dakota into Manitoba while a trough and upper low gets settled in over northern California. The weather the next 7 days will be impacted by this upper trough and associated short waves, and also position of upper ridge.
Mostly clear and dry conditions continue with high pressure in control.
1015 PM PDT Wed Sep 10 2025 * A low pressure system will bring gusty winds and cooler temperatures to the region over the next few days.
149 AM EDT Thu Sep 11 2025 High pressure will dominate the weather pattern through the next seven days with dry conditions and near to above normal daytime temperatures. An upper level trough will gradually amplify while taking on a negative tilt, as its axis approaches from the west. Meanwhile, strong surface ridging will continue to build down the lee of the Appalachians, resulting in a low-level north/northeasterly flow across the area. Time/height cross-sections show sufficient moisture in the low/mid-levels to support partly to mostly cloudy skies across most of the Midlands, but sunshine should be more predominant across the CSRA. Light northeasterly winds will prevail, with lows in the lower to mid 60s except for a few upper 50s north/west.
155 AM EDT Thu Sep 11 2025 A weak cold front will move through later today into tonight, bringing just some periods of clouds.
Despite the passage of a mid/upper level trough through tonight, a mean northerly low level flow of relatively dry air and large scale subsidence/sinking motion associated with 1020+mb high pressure migrating southeastward from James Bay will promote another very pleasant and rain-free day across central PA. Mainly clear and seasonably cool conditions again tonight with patchy fog and min temps in the low 40s to mid 50s range. More comfortable/low humidity weather on tap into the weekend with highs trending a bit warmer on the margin.
144 AM EDT Thu Sep 11 2025 High pressure remains in control with sunny skies and seasonable temperatures through the end of the week.
(Today and tonight) Upper level ridge will be centered over Texas today, resulting in dry conditions with above normal temperature for much of the area. Highs this afternoon will range from the lower 90s over southern sections, to the upper 90s across the Big Country.
138 AM EDT Thu Sep 11 2025 High pressure remains in control of our weather through the rest of the week and into the weekend.
Upper analysis this morning depicts a low spinning over Quebec with an upper ridge axis positioned over the Plains states. At the surface, a broad area of high pressure is centered near Hudson Bay with ridging extending southward into central Illinois. An upper low spinning near the Pacific West Coast will push the ridge east today with it spilling into the Great Lakes Region by this evening. Temperatures today will be a few degrees warmer than yesterday, with MaxT's peaking into the middle to upper 80s.
339 AM EDT Thu Sep 11 2025 High pressure remains in place over the next several days, bringing mostly sunny skies and mild temperatures.
228 AM EDT Thu Sep 11 2025 As upper-level troughing deepens, high pressure will prevail at the surface into the weekend. The mid-levels will consist of troughing over the Southeast U. It'll strengthen over the entire East Coast this afternoon through the overnight in response to strong ridging over the Central Plains. At the surface, High pressure will remain firmly over the East Coast, with a stationary front well to our south and southeast. The periphery of the High will continue to dominate our weather, bringing dry conditions. Highs should range from the lower to middle 80s. Lows will range from the lower 60s far inland to the lower 70s near the beaches. Quiet conditions continue into the weekend, as upper level ridging across the eastern CONUS gradually shifts over the Atlantic.
Precipitation will continue to wrap around a broad upper low centered over Northern CA (it's a messy circulation with a lot of embedded sub-vorticies). Across SW Idaho, showers and thunderstorms will decrease to isolated coverage through Thursday morning, with scattered to numerous showers and storms redeveloping across the higher terrain Thursday afternoon.
122 AM EDT Thu Sep 11 2025 - Pleasant weather continues with light winds and highs into the low to mid 80s over the next several days.
Pockets of drier air may limit how much activity develops, however, the highest chances are expected across SW FL terminals. Next vort max wrapping around upper trough in the Gulf to move over SE Gulf and SW FL with another high PoP day Thursday.
(This evening through Thursday) Upper ridging will continue to build in Wednesday, with dry and warm conditions. Highs Thursday will be about a degree higher, in the lower to mid 90s, with the warmer readings in the Big Country and Concho Valley.
A few, weak inverted troughs at llvls were helping to maintain a bkn-ovc deck of mid to high end strato cu across the Lower and Mid Susq Valley early this evening and this cloud cover will likely hold in place for most or all of the overnight hours (through 10-12Z Thu). We can further see the impacts of these troughs by the NWWD bulge in the RAP'S 925-850 mb Theta-E field (From SE PA to near KUNV, KSEG and KHZL). High pressure continues to rule.
200 AM EDT Thu Sep 11 2025 High pressure will persist through the rest of the week.
(Tonight through next Wednesday) Upper troughing over the eastern CONUS continues to travel east today, with high pressure building over the Plains.
843 PM PDT Wed Sep 10 2025 A low pressure system moving into California is bringing lower temperatures, with highs for inland areas 10 to 15 degrees below average again on Thursday.
240 AM EDT Thu Sep 11 2025 -High pressure will continue beautiful early fall weather today.
1246 AM CDT Thu Sep 11 2025 Today through tonight: Upper and surface ridging will continue to prevail across the area today and this will continue through tonight. The upper ridge will strengthen over the area today and this will result in temperatures being a couple of degrees hotter, ranging from the low to mid 90s.
322 AM EDT Thu Sep 11 2025 A cold front will cross the region today.
148 AM EDT Thu Sep 11 2025 Dry high pressure will persist over the region through this weekend. As of 135 am Thursday: Upper heights will fall weakly across the region during the near term, as an upper low moves into the northeast Conus/northern Mid-Atlantic later this morning, with some weak short wave troughs diving west and south of this feature into the southern Appalachians and vicinity. , the upper Savannah River Valley) this afternoon, and convection-allowing models have been consistent in initiating some spotty showers in these areas as weak short wave troughs approach late in the day. Despite the warmer overall conditions, relatively dry air, mostly clear skies and light winds should allow min temps to dip several degrees below normal tonight.
Meanwhile, complicated troughing aloft reaches southward into the Gulf. Over the next couple of days the troughing over the eastern United States will amplify, reaching down into the Yucatan by this weekend.