Aikyam-Lab/Synoptic-Bench huggingface dataset:
Cold dry air ahead of the boundary with dewpoints in the low 20s produced enough evaporational cooling with the precipitation, combined with some higher rates to result in several hours of rain/snow especially in the higher terrains. For the rest of the evening and overnight, clearing skies and dry air will allow for decent radiational cooling which will drop lows into the lower 30s. Upper level flow becomes fairly zonal across the northern tier of the conus which will advect warmer air aloft out of the flatten western conus ridge. Heading into the weekend, deep troughing will develop over the western conus with surface cyclogenesis in the lee of the Rockies, which sets up deep layer southwesterly flow through the Plains into the Great Lakes.
A light south wind has us much warmer than the last two nights, but consequently also has numbers all over the place right now. Mid 50s for the cooler northeast and yet as warm as 69 at Jacksonville and 67 in Mansfield.
Slightly cooler weather is expected tomorrow, followed by sharply cooler weather during the weekend.
811 PM EDT Thu Oct 20 2022 In the wake of an upper level trough of low pressure, high pressure will build into the Ohio Valley through the weekend.
632 PM CDT Thu Oct 20 2022 (This afternoon through Friday night) A large upper level trough continues to dominate the eastern half of the country with West Texas and Southeast New Mexico on the western edge of the trough. Upper ridging will begin developing over West Texas and Southeast New Mexico on Friday but the ridge will be flattened a bit by a broad, upper trough moving over the Northern and Central Plains.
632 PM CDT Thu Oct 20 2022 A warm front is still lingering over the Red River Valley with mild temperatures in the 60s (well above average for this part of October). High clouds are increasing as a weak cold front approaches from upstream, and while there are light returns on radars in souther Canada no precip is reaching the ground as there is a substantial dry later below these elevated returns and it would be moving into an even dry air mass over our area. The trend for this period is initially for warmer temperatures ahead of a low pressure system producing rain and possibly a mix of light rain and snow. Cooler conditions are expected in the wake of the system and will persist through the end of the period.
1242 AM EDT Fri Oct 21 2022 High pressure will remain in control of the weather through the weekend. Mid level ridging will push quickly east across the region through today.
Enough low-level warm advection to support max temps about 12 degrees warmer than Thursday, which lands just above the 50th percentile of blended model guidance. Return flow should be sufficiently established that the boundary-layer won't decouple as much tonight, so min temps Sat morning will trend roughly 10 degrees warmer as well, putting us solidly into an Indian summer pattern.
102 AM EDT Fri Oct 21 2022 Cold high pressure will build into the region from the west through Friday. A moisture starved mid/upper level trough will slowly move move into the area overnight with little fanfare. At the surface, high pressure will remain parked across the central to southern Appalachians, resulting in a weak pressure gradient across our area. Low temps are expected to range from the lower 30s in the usual rural cold spots to the upper 30s to near 40 across the southeast and urban areas. So despite the mid-level trough axis slowly moving east through the area tomorrow, expect very few clouds if any, and certainly no precipitation. At the surface, high pressure centered just to our west will slowly weaken, with another high nosing down the Eastern Seaboard.
1137 PM CDT Thu Oct 20 2022 As the mid/upper trough over the Northeast lifts north and eastward away from the area, mid/upper ridging has developed upstream over the central CONUS bringing rising heights/increasing thickness and rising temperatures. Light southerly winds will become established tonight with seasonable lows in the low to mid 40s anticipated for most areas.
Most valleys will see precip remain as all rain through the weekend, with the highest storm total precipitation amounts focused over north central Idaho mountains and along the Montana/Idaho border, as well as over the northern portion of the Continental Divide.
Warmer temperatures today. The highs will be closer to normal for this time of year. Lows tonight will be warmer mainly mid 30s to mid 40s.
249 AM EDT Fri Oct 21 2022 A building ridge across the eastern US will lead to progressively warmer weather and dry conditions through the weekend. A sunny and relatively warmer day is on deck for the area as we begin to see a pattern change. Troughing will gradually deepen across the western CONUS with heights increasing across the eastern US. Southwest flow through much of the lower troposphere will bring in considerably warmer air into the region.
The juxtaposition of a deep trough over the northern Great Plains and strong high pressure over the Carolinas will make for a tight pressure gradient over the Mid-South this weekend.
346 AM EDT Fri Oct 21 2022 After a solid week of temperatures below normal, a return to near- normal conditions is on tap for today as persistent troughing has finally departed the region. Some high clouds around this morning will clear up as the column becomes progressively drier, and a warm front will pass through with little fanfare. Expect highs to climb well into the 60s today as low-level flow organizes out of the southwest and advects in a warmer air mass from the mid Mississippi Valley. A 170-kt jet core dropping into the PNW tonight will be responsible for a synoptic scale pattern shift this weekend that brings troughing to the western CONUS and ridging over the Great Lakes.
Rapidly expanding thermal ridge over the area today, with forecast 850 mb temps near climatological max values supporting near record highs in mid 80s to near 90. Sfc winds will also begin to respond to developing western CONUS trough with gusts approaching 30 mph, especially over northeast OK.
This has allowed for radiational cooling into the mid 30s in some locations, while holding in the lower 40s in others. Surface pressure is falling in the Plains, and with that, the south winds are already increasing tonight over Minnesota, followed by a gusty cold front in North Dakota. Tonight, the weak cold front will drop into the northern CWA by late evening, but will stall out, resulting in an exceptional night for the last regular season high school football games in Iowa. Tonight, with the front stalling out near I-80, the north will fall to the mid to upper 40s, while southern areas remain in the lower 50s.
(Today and tonight) Mid to upper level trough will slide east of the region this afternoon into tonight with northwest to north 500 mb flow across the region. High pressure continues to dominate with dry conditions expected through tonight. Temperatures will warm today with highs in the lower to mid 70s and lows tonight in the 40s.
108 AM CDT Fri Oct 21 2022 (This evening through Friday) Weak upper level ridging will result in above normal temperatures across West Central Texas on Friday. A lee trough will develop across eastern Colorado and western Kansas, resulting in an increased pressure gradient across the forecast area.
The northeast will be under ridging and calmer winds which will allow for cooler than expected temps dipping into the upper 30s in the Golden Triangle. Temps were adjusted to better represent this and cooler low temps in the eastern half of the region as well. /NP/ For tonight, the upper level trough will begin to shift east out of our area. In response to this ridge, return flow will begin to build over our region. Areas east of the I-55 corridor could see morning lows dipping in the low 40s retaining a small portion of the cold airmass from the previous day. Highs will peak in the low 80s by the afternoon.
1224 AM CDT Fri Oct 21 2022 (This afternoon through Friday night) A large upper level trough continues to dominate the eastern half of the country with West Texas and Southeast New Mexico on the western edge of the trough. Upper ridging will begin developing over West Texas and Southeast New Mexico on Friday but the ridge will be flattened a bit by a broad, upper trough moving over the Northern and Central Plains.
1211 AM CDT Fri Oct 21 2022 (Tonight through Friday) Large, sprawling trough was spatially dominant east of the Rockies.
Dry and warmer weather will continue through Friday.
219 AM CDT Fri Oct 21 2022 (Issued 218 AM CDT Fri Oct 21 2022) Today and Tonight: Transition to a warmer southwesterly flow at the surface and aloft from this afternoon into tonight over the forecast area. This is the beginning of a much warmer forecast for southern Wisconsin.
1144 PM CDT Thu Oct 20 2022 Another tranquil evening is on tap this evening, albeit a bit warmer.
This disturbance will pull modified arctic air along with it and slam into the zonal flow forming a trough over the Pac Northwest by the afternoon hours.
330 AM CDT Fri Oct 21 2022 Today and Tonight: Continued dry through the period and a return to warmer than normal temperatures is expected. Early morning water vapor imagery/RAP analysis showed the axis of the upper level trough that has been over the region the last several days, has shifted east of Mississippi.
1215 AM EDT Fri Oct 21 2022 Near-freezing temperatures are possible tonight, before a ridge builds in tomorrow, bringing warmer and drier weather into the weekend. This will likely be the last influence of the persistent eastern trough that has brought seasonably cold temperatures and precipitation for most of the week. A progression of warmer days is in store for the weekend as the upper-level low that brought cooler weather to the Upper Ohio Valley and Allegheny Mountains finally lifts off to the northeast and we transition into a pattern that will be characterized by troughing across the western CONUS and ridging across the east. By Friday, southwest winds in the lower troposphere will ramp up, first with a trough lifting across the Upper-Midwest.
(Today and tonight) Slightly above normal temperatures across West Central Texas and drier conditions are expected today, as a weak upper-level ridge remains in place over the area. Afternoon highs in the lower 80s to lower 90s are expected, with south to southwesterly winds increasing late this morning/early this afternoon ranging from 10 to 15 mph with some gusts up to 25 mph.
trof finally relents and allows energy digging across the Pacific NW and Canada to carve out a trof over the west U. Return flow will setup between low pressure over the Plains and high pressure along the U.
540 AM CDT Fri Oct 21 2022 Today: A cold front presently residing over northern SD very early this morning will continue to drop southward through the morning hours, exiting our CWA around 15Z. With ensuing warm air advection and increasing winds, temperatures will remain above seasonal normals, dropping into the lower to mid 40s.
High pressure continues to build across the area and current satellite imagery are showing some low clouds over the Interior and Southwest FL, while mostly clear skies up north. Under that pattern, temperature observations showed morning lows ranging from the lower 40s north to the upper 50s south. Mostly clear skies and rain free over the coastal waters as an area of high pressure continues to stretch over the waters. Cooler/drier air remains in place for today, temperatures should start to warm a little bit during the weekend.
622 AM CDT Fri Oct 21 2022 Today and Tonight: Continued dry through the period and a return to warmer than normal temperatures is expected. Early morning water vapor imagery/RAP analysis showed the axis of the upper level trough that has been over the region the last several days, has shifted east of Mississippi. Thus, ridging surface and aloft today and tonight will lead to warmer than normal temperatures. Highs will top out from the upper 70s east to the lower 80s west. Lows Saturday will range from the lower 50s east to the upper 50s west.
621 AM CDT Fri Oct 21 2022 Cold front is now through the region with clear sky in post frontal subsidence. Before this upper wave brings clouds and the light rain chances, the region will be under the influence of weak low level ridging, leading to clear sky and low level westerly flow. Airmass will be cooler compared to yesterday, but mixing of dry air aloft to the surface brings the potential for afternoon humidity values 25%-35%.
High pressure with broad subsidence and warm advection will result in clearing sky, breezy swly winds and temperature near the climatological norms.
While this has effectively eliminated shower activity in KEY waters, a low level tropospheric trough reaching up to about 850 mb is centered just off the southeast coast of mainland Florida and inducing isolated convective activity.
957 AM EDT Fri Oct 21 2022 High pressure will remain in control of the weather through the weekend. Mid level ridge will continue to build northeast today from the southern plains through the Great Lakes. Dry air in the low levels will allow for efficient mixing, so expect a warm, dry, and breezy afternoon. Mid level ridging will shift off to the east tonight into Saturday but this will help keep us in continued broad southwesterly flow. Lows tonight will be in the 40s with highs on Saturday in the low to mid 70s.
A trough at the mid-levels could eventually lead to a cut- off low developing off the Atlantic coast of North or Central Florida on Saturday which could help focus the Atlantic convection further north.
A big-warm up today as upper trough shifts east of Alabama and low level flow becomes southwesterly. Highs today will be about 10 degrees warmer than yesterday, with values topping out in the lower to middle 70s. Lows tonight will be much warmer than previous mornings, with most areas in the 40s. Highs on Saturday will be few degrees warmer than today.
Slightly cooler weather is expected today, followed by sharply cooler weather during the weekend.
Cooler temperatures return for Saturday with light precipitation likely in the mountains.
(Today through Saturday) High pressure and dry conditions will persist across the CWA.
Final day of warm and dry conditions as a strong cold front sweeps across northern and central Nevada on Saturday. Gradient flow increases ahead of a strong cold front. Winds will be breezy this afternoon, but increase tonight and early Saturday morning as the cold front approaches from the north. Snow levels will lower to around 5000 to 6000 feet behind the cold front. Cold front moves across central Nevada during the day on Saturday. Wind gusts ahead of the cold front will reach 45 mph and a wind advisory has been issued to account for this.
Mid-level flow will change from the northwest to the southwest as troughing near the east coast moves offshore over the Atlantic and high pressure over central Mexico begins to move over the southwestern Gulf. Overnight lows tonight will range near 60 degrees to the low 70s along the coast.
527 AM EDT Fri Oct 21 2022 A building ridge across the eastern US will lead to progressively warmer weather and dry conditions through the weekend. A sunny and relatively warmer day is about to get underway across the Upper Ohio Valley and Allegheny Mountains. Troughing will gradually deepen across the western CONUS with heights increasing across the eastern US. Southwest flow through much of the lower troposphere will bring in considerably warmer air into the region. By Saturday, the longwave pattern across the CONUS amplifies with troughing digging across the mountain west and heights continuing to rise in the east.
632 AM EDT Fri Oct 21 2022 High pressure will remain in control of the weather through the weekend. Mid level ridging will push quickly east across the region through today. Mid level ridging will shift off to the east tonight into Saturday but this will help keep us in continued broad southwesterly flow. Lows tonight will be in the 40s with highs on Saturday in the low to mid 70s.
Dry weather and unseasonably warm temperatures well continue today due to high pressure over the area. Expect temperatures to fall to below normal over the weekend as a low pressure center moving through the Great Basin brings much cooler temperatures, increased winds and light precipitation to the area. Persistent high pressure is providing our area with an unseasonably warm airmass and near record high temperatures. One more unseasonably warm day is expected today across our area before a cold upper low pressure center which will drop southeast out of the Gulf of AK today and into the PAC NW by Saturday.
957 AM EDT Fri Oct 21 2022 Warming temperatures and dry conditions look to continue through Saturday as high pressure moves across our region.
402 AM CDT Fri Oct 21 2022 Today: A cold front presently residing over northern SD very early this morning will continue to drop southward through the morning hours, exiting our CWA around 15Z. With ensuing warm air advection and increasing winds, temperatures will remain above seasonal normals, dropping into the lower to mid 40s.
624 AM CDT Fri Oct 21 2022 (Today and tonight) Slightly above normal temperatures across West Central Texas and drier conditions are expected today, as a weak upper-level ridge remains in place over the area. Afternoon highs in the lower 80s to lower 90s are expected, with south to southwesterly winds increasing late this morning/early this afternoon ranging from 10 to 15 mph with some gusts up to 25 mph.
646 AM EDT Fri Oct 21 2022 Warming temperatures and dry conditions look to continue through Saturday as high pressure moves across our region.
616 AM EDT Fri Oct 21 2022 (Today and tonight) Mid to upper level trough will slide east of the region this afternoon into tonight with northwest to north 500 mb flow across the region. High pressure continues to dominate with dry conditions expected through tonight. Temperatures will warm today with highs in the lower to mid 70s and lows tonight in the 40s.
1238 PM CDT Fri Oct 21 2022 (Today through Saturday) As the apex of the upper trough that brought this weeks cold front continues to slide east, an upper level ridge will move in behind it.
A mid to upper longwave trough still resides over the state of Florida after the cold front passage earlier this week, and continues to pump dry continental air into our region. This activity is likely associated with the lower tropospheric trough extending up to about 850 mb positioned just off the southeast coast of Florida. Moderate northerly breezes are expected to last through Saturday before starting to recede Saturday night as the longwave trough is replaced by an oncoming ridge currently residing across the midwest United States.
(This evening through Saturday) Above normal temperatures will continue across West Central Texas through the next 24 hours, as weak upper level ridging dominates the region.
136 PM EDT Fri Oct 21 2022 High pressure will extend into the area through Saturday.
17z analysis depicted broad high pressure stretching from the Southeast into New England, with lower pressures from the Great Lakes into the Southern Plains. A weak cold front was analyzed from northwest Wisconsin to Nebraska, as has been moving southeast over the last 12- 24 hours. Aforementioned cold front will continue to drift south into the Midwest as we head through the evening. This will be occurring due to a deep trough traversing the Rockies.
245 PM EDT Fri Oct 21 2022 (This afternoon through Saturday) High pressure over the area will continue to dominate the weather pattern and keep things dry through the weekend.
High pressure with broad subsidence and warm advection will result in a clear sky, breezy swly afternoon wind and temperature near the climatological norms.
Tonight and Saturday A weakening cold front was moving through the forecast area this afternoon, accompanied by high clouds and a wind shift to the west. On Saturday, the frontal boundary will shift back north as a warm front.
330 PM EDT Fri Oct 21 2022 Present surface analysis has an elongated surface 1023mb high pressure center situated along the eastern seaboard. However, aloft a moisture starved trough is working its way through the flow. Only indication of the trough is the increased surface winds and the cirrus clouds crossing through the region. The trough will eject to the east overnight and upper-level zonal flow will take over at the main regime. At the lower levels, southwesterly flow will dominate through the day Saturday. The southwesterly flow will advect warmer and drier air into the region.
1257 PM EDT Fri Oct 21 2022 (Today and tonight) Mid to upper level trough will slide east of the region this afternoon into tonight with northwest to north 500 mb flow across the region. High pressure continues to dominate with dry conditions expected through tonight. Temperatures will warm today with highs in the lower to mid 70s and lows tonight in the 40s.
202 PM EDT Fri Oct 21 2022 Warming temperatures and dry conditions look to continue through Saturday as high pressure moves across our region.
401 PM EDT Fri Oct 21 2022 Present surface analysis has an elongated surface 1023mb high pressure center situated along the eastern seaboard. However, aloft a moisture starved trough is working its way through the flow. Only indication of the trough is the increased surface winds and the cirrus clouds crossing through the region. The trough will eject to the east overnight and upper-level zonal flow will take over at the main regime. At the lower levels, southwesterly flow will dominate through the day Saturday. The southwesterly flow will advect warmer and drier air into the region.
The gusty southerly winds will subside around sunset this afternoon as weak high pressure briefly moves through WI. This is due to a tightening pressure gradient with low pressure developing in the Plains.
Look for an increased chance for mainly light rain along and north of the Highway 200 corridor tonight into Saturday morning.
South to southeasterly winds in the lower levels will draw in warm moist air, leading to warmer and more humid conditions Saturday. Saturday's lows will be warmer with temperatures in the mid 60s to low 70s.
This disturbance will pull modified arctic air along with it and slam into the zonal flow forming a trough over the Pac Northwest by the afternoon hours. Tonight through Saturday night: Flow gradually tilts further southwest as the trough to the west amplifies.
1233 PM CDT Fri Oct 21 2022 (Today and tonight) Slightly above normal temperatures across West Central Texas and drier conditions are expected today, as a weak upper-level ridge remains in place over the area. Afternoon highs in the lower 80s to lower 90s are expected, with south to southwesterly winds increasing late this morning/early this afternoon ranging from 10 to 15 mph with some gusts up to 25 mph.
155 PM EDT Fri Oct 21 2022 High pressure will remain in control of the weather through the weekend. Mid level ridge will continue to build northeast today from the southern plains through the Great Lakes. Dry air in the low levels will allow for efficient mixing, so expect a warm, dry, and breezy afternoon. Mid level ridging will shift off to the east tonight into Saturday but this will help keep us in continued broad southwesterly flow. Lows tonight will be in the 40s with highs on Saturday in the low to mid 70s.
1233 PM CDT Fri Oct 21 2022 Today and Tonight: Continued dry through the period and a return to warmer than normal temperatures is expected. Early morning water vapor imagery/RAP analysis showed the axis of the upper level trough that has been over the region the last several days, has shifted east of Mississippi. Thus, ridging surface and aloft today and tonight will lead to warmer than normal temperatures. Highs will top out from the upper 70s east to the lower 80s west. Lows Saturday will range from the lower 50s east to the upper 50s west.