Aikyam-Lab/Synoptic-Bench huggingface dataset:
1212 PM CDT Thu Sep 8 2022 (Today and tonight) Although the longwave trough axis that we have been dealing with for the last few days continues to move away, we will actually see height falls across the area as mid-level ridge from the southwestern United States up toward the central Plains begins to weaken today and consolidate more in the western U.
231 PM EDT Thu Sep 8 2022 A slow moving upper level trough will push east of the area by Friday, bringing an end to the showers late today. Weak high pressure will build over the region on Friday, resulting in a dry day.
Drier air will be pulled around the west side of the upper low and over the region.
Colder air will continue to push into the region from Saskatchewan behind the cold front. ---BMickelson Previous discussion: An upper trough will be digging into the northern plains over the next few days. As an extension of a Hudson Bay low, much cooler air will be streaming south today.
1225 PM CDT Thu Sep 8 2022 After some morning fog across parts of central IL early this morning, expect sunny skies, light winds, and highs in the low to mid 80s today.
1155 AM EDT Thu Sep 8 2022 High pressure arrives today to decrease rain chances for today and Friday. Despite the high, wedge like conditions will keep ample clouds and cooler temperatures for today. While high pressure builds in today, lingering clouds through a decent portion of the day will result in cooler afternoon temperatures as many will remain in the 70s for highs.
1007 AM CDT Thu Sep 8 2022 (Issued 1006 AM CDT Thu Sep 8 2022) High pressure over lower MI/northern IN will continue to shift SE away from the area today. Highs into the low to mid 80s are likely for the area and that matches with current forecast. Stumpf (Issued 236 AM CDT Thu Sep 8 2022) Today through Friday: Patchy fog has developed once again this morning, though at this point it is not nearly as dense or widespread as it was yesterday, likely due to slightly warmer temperatures and a bit of passing cloud cover. Pleasant conditions are expected today with highs in the low to mid 80s, with plenty of sun.
151 PM EDT Thu Sep 8 2022 High pressure crosses into Friday. A cold front approaches during the new work week. The last of the low stratus is lifting with a healthy cumulus field across the area this afternoon. Still think a spotty shower or thundershower can be expected on the mountain ridges. Low level flow will veer to the east and southeast tonight which may correspond to just enough mixing off the deck to keep fog more confined to the river valleys in the Lowlands. It should be a bit warmer than the past couple of days as compressional warming effect and recovering upper level heights allow for above normal temperatures.
228 PM CDT Thu Sep 8 2022 A surface cold front has now moved completely through western and central North Dakota with most sites now reporting winds out of the north or northwest. We remain under the influence of troughing through the day on Friday with multiple waves moving through, but precipitation will mainly be confined to the south and east of us. Tonight's lows will be much cooler than last night, though still around normal west to slightly above normal east, ranging from the mid 40s to mid 50s. Friday night will be chilly with lows dipping into the upper 30s across portions of the west (mainly the southwest) and the low to mid 40s elsewhere.
(This evening through Friday) An upper low is centered over the northern gulf just south of Louisiana this afternoon while high pressure at the surface stretches from the upper midwest to the northern gulf coast. A cold front has stalled along the Louisiana and SE TX coast. North of the front, a somewhat drier and cooler than normal air mass has filtered in over the past 12-24 hrs. Even with the lower moisture in place isolated to widely scattered showers and storms are still ongoing under the upper low. Another mostly dry day is anticipated with scattered storms mainly along the Atchafalaya with lesser chances to the west as the upper low drifts ever so slowly to the east.
256 PM CDT Thu Sep 8 2022 High pressure over the region will bring another day of fair weather conditions to central Illinois Friday. Temperatures will start the day in the mid to upper 50s and will warm into the lower to mid 80s.
1220 PM CDT Thu Sep 8 2022 (The rest of today ) It was a seasonably cool start this morning across the region with a few locations dipping into the upper 50s, while most others saw lows in the lower 60s. Plentiful sunshine is in store for the rest of the day with a quick warmup into the upper 80s and lower 90s between upper level troughing to the east and strong ridging to the west.
200 PM EDT Thu Sep 8 2022 High pressure over the Ohio Valley moves east tonight and wedges down the east side of the Appalachians on Friday bringing a brief break in the precipitation.
335 PM EDT Thu Sep 8 2022 A weak cold front from Quebec will cross the area this evening. High pressure will then prevail Friday through the weekend.
1028 AM MDT Thu Sep 8 2022 Much cooler air will start to move into Montana today, with Friday likely being the coolest day we have had in several weeks.
144 PM MDT Thu Sep 8 2022 A broad trough covers the Pacific NW, producing showers and storms across WY/MT. As the cold front and stronger upper-level energy move into the region late this afternoon and evening, a few stronger thunderstorms will be possible. Significantly cooler air will settle into the region tonight and Friday: lows tonight will be in the 40s and lower 50s on the plains, with some 30s possible in the Black Hills.
(The rest of today ) It was a seasonably cool start this morning across the region with a few locations dipping into the upper 50s, while most others saw lows in the lower 60s. Plentiful sunshine is in store for the rest of the day with a quick warmup into the upper 80s and lower 90s between upper level troughing to the east and strong ridging to the west.
223 PM MDT Thu Sep 8 2022 Showers and thunderstorms will continue across the area this afternoon and into the evening as a trough continues to transit the area. Still expecting through Friday night for Sheridan County to pickup around an inch with the higher terrain getting around an inch an a half. The highest elevations, generally above 8500 feet, will start to transition to snow. Tomorrow night will be much cooler with 40s common. Areas around Harlowton to Livingston have a chance to reach freezing.
1134 AM CDT Thu Sep 8 2022 (Today through Friday) A ridge of high pressure across the Four Corners strengthens through the short term as a mid-level trough drops into the Gulf of Mexico. A weak disturbance dropping south along the west side of the trough, may kick up another couple of showers or thunderstorms tonight across the ranchlands, otherwise, drier and warmer conditions are expected through the rest of the week.
The area will remain in between a building mid to upper level ridge to the west and a trough of low pressure to the east with a generally northerly flow aloft through the period. Nevertheless, sufficient moisture will linger around to spark a few showers and thunderstorms again on Friday along the sea breeze, with the highest chances expected across portions of the Coastal Bend and Victoria Crossroads.
Cooler temperatures are expected as northwest flow ushers in a cooler air. Cooler temperatures are expected as northwest flow ushers in a cooler air. The one to the north will bring elevated fire conditions to northern Elko county today and cooler temperatures to all locations.
Steep low-level lapse rates were also sampled, particularly in the low-levels. High tides associated with the coming full moon will result in less clearance under low fixed bridges.
1221 PM CDT Thu Sep 8 2022 (Today and tonight) Early morning mid-level water vapor imagery shows our upper high still over the Desert Southwest, with Hurricane Kay moving north northwest near the Baja peninsula, a trough digging into the PNW, and a trough remaining fairly stationary over the eastern CONUS. As Hurricane Kay moves towards the north and the trough entering the PNW continues to dig into the CONUS, it will begin to deamplify the upper ridge to our west. This will help to decrease thicknesses some, resulting in slightly cooler temperatures than we saw yesterday. Even with the deamplification of the upper ridge, we will still see northeast flow aloft, which will continue to allow drier air to advect into the area. Tonight will be mostly clear with light winds, resulting in lows in the low to mid-60s.
Meanwhile, in the lower- levels, surface observational data suggest that a subtle convergence axis lies to the immediate southeast of the forecast area this morning, and should provide a notable gradient in boundary layer moisture, with dewpoints ranging from the m-u 50s (NW) to the mid 60s (SE). Otherwise, we made minor adjustments to the high temperature grid to reflect values ranging from the lower 80s in elevated terrain to the m-u 80s in the valley.
Strong cold front has moved into Wyoming with gusty winds expected to continue through about sunset before dissipating rapidly overnight. Outside of the winds main short term impact is the much cooler temperatures today behind the cold front with about 10 to 15 degrees of cooling from yesterday and another 5 to 10 degree cooler high temperatures day on Friday.
Focus shifts to the cold front that is expected to move into the area tonight, and then through the area on Friday. This front will bring much cooler air for the weekend, but more importantly, a widespread chance of showers and isolated thunderstorms.
247 PM CDT Thu Sep 8 2022 Continued hot weather can be expected through Friday ahead an upper trough and associated cold front.
353 PM EDT Thu Sep 8 2022 Seasonable temperature and a clearing sky are expected under building high pressure. Elsewhere skies will continue to clear as high pressure builds. Dry weather will persist under the building ridge of high pressure.
Clear skies tonight will allow temperatures tomorrow morning to fall into the low 60s again, but by tomorrow afternoon, boundary layer winds will shift around to the southeast and you'll start to notice a slow, but steady increase in moisture. However, clouds will be on the increase and by tomorrow night, a warm front will have lifted through the region and bring widespread showers and maybe a rumble of thunder to the mid-state.
145 PM EDT Thu Sep 8 2022 A few showers and possibly a thunderstorm are possible in the ridges today along a departing trough. Elsewhere seasonal conditions and clearing skies are expected under building high pressure. The next rain chance will arrive by late weekend with another low pressure system. Elsewhere skies will continue to clear as high pressure builds. Dry weather will persist under the building ridge of high pressure.
With the drier weather under the ridge, temperatures cool off nicely into the mid 60s for most by Friday morning.
1020 AM CDT Thu Sep 8 2022 After some morning fog across parts of central IL early this morning, expect sunny skies, light winds, and highs in the low to mid 80s today.
250 PM CDT Thu Sep 8 2022 A cold front is currently pushing through the area, turning winds to be northerly this afternoon. Also seeing some breezy conditions in eastern North Dakota as the cold front pushes through. Temperatures should drop for the remainder of the day once the cold front comes through. Radar is showing some returns with the cold front, so there remains a chance for sprinkles or light rain showers the rest of the day with some stronger returns. As the cold front progresses through central Minnesota, there is a chance that some portions of our SE forecast area could see some isolated thunderstorms as instability increases to around 1000 J/kg.
147 PM EDT Thu Sep 8 2022 A slow moving upper level trough will push east of the area by Friday. Weak high pressure will build over the region on Friday, resulting in a dry day.
It was another warm and somewhat humid afternoon for early September with readings in the lower to middle 80s. Highs across far north-central Wisconsin will be a little more tricky due to cloud cover and potential rainfall where readings may only get into the lower to middle 70s.
1209 PM CDT Thu Sep 8 2022 (Today and tonight) The main features affecting west central Texas today are a broad upper-level ridge over the western US and an area of high pressure at the surface over the Midwest. Cooler and drier air has settled in across much of west Texas behind a cold front. Highs will once again be in the low to mid 90s with sunny to partly cloudy skies.
An upper level trough axis stretched from the Mid-Atlantic states to the central Gulf Coast states this afternoon pinches off tonight into a cutoff upper level low across southeastern LA and south-central MS. Overnight tonight into Friday the upper level low strengthens some as an intensifying upper level jet develops around the southeastern and eastern periphery of the ULL over the north-central GOM into AL/FL. Convection will be slow moving and likely producing torrential rainfall rates owing to idealized warm rain processes with high freezing level, good forcing, PWATs of 2 to 2. Highs Friday will likely be kept relatively cool given extensive cloud cover and precipitation coverage, and should remain mostly in the lower 80's with perhaps some middle 80's along the immediate coast.
640 PM CDT Thu Sep 8 2022 (This evening through Friday) An upper low is centered over the northern gulf just south of Louisiana this afternoon while high pressure at the surface stretches from the upper midwest to the northern gulf coast. A cold front has stalled along the Louisiana and SE TX coast. North of the front, a somewhat drier and cooler than normal air mass has filtered in over the past 12-24 hrs. Even with the lower moisture in place isolated to widely scattered showers and storms are still ongoing under the upper low. Another mostly dry day is anticipated with scattered storms mainly along the Atchafalaya with lesser chances to the west as the upper low drifts ever so slowly to the east.
329 PM MDT Thu Sep 8 2022 Cold front and the post-frontal enforcing cold air advection from Saskatchewan has brought much-needed relief from the recent record-high temperatures across our region. As the full front and trough moves through NE Montana, some scattered rain showers are possible, but will mainly be confined to central and southern Montana.
740 PM EDT Thu Sep 8 2022 High pressure over the Ohio Valley moves east tonight and wedges down the east side of the Appalachians on Friday bringing a brief break in the precipitation.
1034 PM EDT Thu Sep 8 2022 Weak high pressure will build over the region on Friday, resulting in a dry day.
750 PM EDT Thu Sep 8 2022 A slow moving upper level trough will push east of the area by Friday, bringing an end to the showers late today. Weak high pressure will build over the region on Friday, resulting in a dry day.
744 PM EDT Thu Sep 8 2022 High pressure will build into the region tonight and will bring dry conditions through most of the weekend.
703 PM EDT Thu Sep 8 2022 Nearly perfect aviation conditions are provided by broad high pressure spanning Lower MI and southern Ontario this evening. The high remains in place and maintains influence on conditions across the region tonight through Friday.
613 PM CDT Thu Sep 8 2022 (This evening through Friday) The synoptic pattern continues to evolve into more of a progressive setup today, with a very broad area of deep upper level troughing descending through the Intermountain West acting to squash what remains of the upper ridge over the Great Basin. Despite these changes, at least some degree of weak upper ridging will remain over West Texas through the next 24 hours as our region becomes sandwiched between the hurricane to the west, the trough to the north, and a separate upper low to our east. Otherwise, another fairly warm and dry day is in store for Friday with temperatures reaching into the low to mid 90s.
The next disturbance to impact the area will push lower clouds, showers, and even cooler air into North Central and Southwest Montana through the day tomorrow.
Continued hot weather can be expected through Friday ahead an upper trough and associated cold front.
857 PM EDT Thu Sep 8 2022 A weak cold front from Quebec will cross the area this evening. High pressure will then prevail Friday through the weekend.
As for rain chances, they look best tnt and Friday morning as some upper energy transitions through the upper trof, helping to breakout post frontal showers. However, the highest deep layer shear remains displaced north of the effective frontal boundary thus suggesting little to no organization of storms. With cooler air overspreading the region this evening, expect the Red Flag Warning will be allowed to expire on time. This will be the result of a departing closed low and associated lower heights this weekend, and a subsequent building of an upper level ridge into the Northern Plains. By the middle of the week, the upper-level ridge axis may shift east of the forecast area, resulting in southwest flow aloft.
646 PM CDT Thu Sep 8 2022 Hot and breezy conditions are being observed across the local area this afternoon as southerly winds have increased with a tightening pressure gradient ahead of a cold front currently across South Dakota. As the aforementioned cold front approaches from the northwest overnight. the leading edge of the cold front should reach the tri- cities during the morning hours.
638 PM EDT Thu Sep 8 2022 A slow moving upper level trough will push east of the area by Friday, bringing an end to the showers late today. Weak high pressure will build over the region on Friday, resulting in a dry day.
959 PM CDT Thu Sep 8 2022 Perfectly clear skies prevail across the Mid-South, at least until that cirrus shield from the upper low along the Gulf coast pushes into N MS in a couple of hours.
Temperatures the remainder of the afternoon will continue to rise for areas across the southern Sandhills, central and southwest Nebraska as the Katabatic cold front pushes through there will be compressional heating which will result in a brief sharp temperature rise where highs could exceed over 100 degrees, which has already been seen across the northern Sandhills this afternoon. For Friday, precipitation chances increase in the evening hours as an increase in low level moisture will move into the region ahead of an upper level trof. Highs on Friday will be 30 to 40 degrees cooler than today with temperatures only in the mid 60s to low 70s.
511 PM MDT Thu Sep 8 2022 A broad trough covers the Pacific NW, producing showers and storms across WY/MT. As the cold front and stronger upper-level energy move into the region late this afternoon and evening, a few stronger thunderstorms will be possible. Significantly cooler air will settle into the region tonight and Friday: lows tonight will be in the 40s and lower 50s on the plains, with some 30s possible in the Black Hills.
844 PM EDT Thu Sep 8 2022 A slow moving upper level trough will push east of the area by Friday, bringing an end to the showers late today. Weak high pressure will build over the region on Friday, resulting in a dry day.
759 PM MDT Thu Sep 8 2022 Upslope easterly winds providing good upslope flow in the lower elevations while a good jet divergence pattern exists aloft. Upper trof continues to press into the area from the north with cooler air and additional instability. Chambers Showers and thunderstorms will continue across the area this afternoon and into the evening as a trough continues to transit the area. Still expecting through Friday night for Sheridan County to pickup around an inch with the higher terrain getting around an inch an a half. The highest elevations, generally above 8500 feet, will start to transition to snow. Tomorrow night will be much cooler with 40s common. Areas around Harlowton to Livingston have a chance to reach freezing.
1033 PM EDT Thu Sep 8 2022 A slow moving upper level trough will push east of the area by Friday, bringing an end to the showers late today. Weak high pressure will build over the region on Friday, resulting in a dry day.
910 PM EDT Thu Sep 8 2022 Seasonable temperature and a clearing sky are expected under building high pressure. Dry weather will persist under the building ridge of high pressure.
Reinforcement of this stationary front is expected through the short term as a weak high pressure system in the Midwest slides into New England and intensifies under upper-level ridging. By Friday morning, weak, low-level, cutoff low-pressure system over the eastern Gulf of Mexico will force abundantly moist air out of the GoMEX to flow into the forecast area, gliding up and over the CAD airmass. The combination of the strengthening high pressure system over New England enhancing upslope flow in the Carolina and SE Appalachians and the isentropic lift of the warmer, moist air from the Gulf riding over the CAD airmass will act to reinforce wedge like conditions throughout the forecast area.
Hot and breezy conditions are being observed across the local area this afternoon as southerly winds have increased with a tightening pressure gradient ahead of a cold front currently across South Dakota. As the aforementioned cold front approaches from the northwest overnight. the leading edge of the cold front should reach the tri- cities during the morning hours.
A cold front is creeping closer to the CWA this afternoon, easily decipherable in current pressure fields and on satellite draped over western Minnesota and along eastern ND. The cold front will take its sweet time exiting our area, with rain showers and embedded thunderstorms possible for much of the region through the daylight hours tomorrow.
632 PM EDT Thu Sep 8 2022 A weak cold front from Quebec will cross the area this evening. High pressure will then prevail Friday through the weekend.
751 PM EDT Thu Sep 8 2022 The large scale pattern changes on Friday as a cut off low develops over Louisiana and ridging builds to our east. Showers and thunderstorms will remain possible each day until a cold front brings a drier air mass in by mid-week. The closed upper low over the Gulf Coast states will begin lifting northward on Friday while an upper ridge builds off the coast.
524 PM MDT Thu Sep 8 2022 Satellite imagery shows a few areas of scattered clouds favoring the high terrain of western Colorado and eastern Utah. Additionally, a quasi-linear band of clouds is oriented from central Utah through northwest Colorado and continues to move southeastward as a trough sags in from the north. Radar returns indicate isolated showers again favoring the high terrain. This will dampen the high pressure, pushing it to the south/west and allowing cooler temperatures associated with the trough to spill into the region starting this evening and tomorrow. While cooler, anticipated another day of above normal (by around 10 degrees) temperatures.
413 PM CDT Thu Sep 8 2022 (Issued 412 PM CDT Thu Sep 8 2022) Tonight through Friday night: High pressure over northern IL/IN will continue to push east away from the area this evening with winds increasing out of the south to southwest on Friday. It should be another warm day on Friday with highs in the low to mid 80s with mostly sunny skies.
Surface analysis shows the cold front has pushed out of the area and northerly winds persist in its wake. Otherwise, cooler temperatures upstream will advect southeasterly over the remainder of the area. A cold front is currently pushing through the area, turning winds to be northerly this afternoon. Also seeing some breezy conditions in eastern North Dakota as the cold front pushes through. Temperatures should drop for the remainder of the day once the cold front comes through. Radar is showing some returns with the cold front, so there remains a chance for sprinkles or light rain showers the rest of the day with some stronger returns. As the cold front progresses through central Minnesota, there is a chance that some portions of our SE forecast area could see some isolated thunderstorms as instability increases to around 1000 J/kg.