Aikyam-Lab/Synoptic-Bench huggingface dataset:
725 AM EDT Tue Sep 20 2022 A strong ridge of high pressure will bring dry and very pleasant weather to eastern Kentucky the next couple of days. Winds should be light and variable today and tonight, before shifting to the southwest on Wednesday at 5 to 10 mph, as high pressure shifts to the east, and a trough of low pressure aloft passes by to our north. Tonights lows should fall into the upper 50s in our valleys the lower 60s on the surrounding ridges. The period will start with an upper level trough sinking southeast over the northeast CONUS, suppressing a strong ridge over the south central CONUS southwestward.
559 AM CDT Tue Sep 20 2022 (Today and tonight) High pressure continues to dominate the forecast through Wednesday.
Temperatures will be 2-5 degrees warmer than yesterday with the biggest changes in the southern valley, closer to the expanding H85 ridge and subsequent warmer H85 temperatures.
Aloft, a broad upper ridging will continue to extends over the Southeast U. For now, there is some drier air in the upper levels of the atmosphere, but there is enough moisture in the lower levels.
(This evening through Wednesday) A near carbon copy is expected the next 24 hours as a mid-upper level high continues to control our weather. The center of the high will edge westward, placing it even more directly overhead by Wednesday afternoon, though that will have very little affect with regards to our sensible weather.
Expect lows in the lower 70s. Scattered showers and a few thunderstorms are possible as a cold front pushes through the region on Wednesday.
Issued by National Weather Service Caribou ME 330 PM EDT Tue Sep 20 2022 High pressure arrives on Wednesday with drier air and warmer temperatures.
/13 (Now through Wednesday) A strong upper ridge over the southern plains into the southeast states will continue through Wednesday. Temperatures will continue to be well above normal with highs on Wednesday in the low to mid 90s with heat index values around 100. Lows tonight will be in the low 70s inland to mid 70s along the coast.
It is hard to ignore Fiona near the southeastern Bahamas and the mean-layer ridge over the Plains, with Fiona headed north and the ridge nearly stationary. Since this morning, shower and thunderstorm coverage has decreased as the low level kinematic fields take on their diurnal diffluent configuration. Meanwhile, additional infusions of short wave energy will break around the eastern flank of the mean-layer ridge.
Upstream, convection has already renewed over southern WI in the warm sector ahead of tomorrow's incoming cold front. Alternatively, weak warm air advection in the low levels ahead of an advancing trough and increasing 850-mb flow may trigger some showers and thunderstorms locally. A cold front and deep trough arrive late in the day Wednesday, bringing an improved chance for storms. The downside here is that the forcing aloft is removed to the north of the cold front. So while the cold front will be enough to spark some storms, the overall intensity and coverage of storms is uncertain in our area.
(The rest of today ) Another hot afternoon expected across the forecast area with strong upper high pressure firmly in place over the southern plain.
(The rest of this afternoon and tonight) Expansive upper high continues to dominate the overall weather pattern with only scattered afternoon CU. Low temperatures tonight should be a degree or two warmer from this morning as southerly winds persist with a modest increase in low level moisture. (Wednesday through Tuesday) Record breaking heat is still expected on Wednesday ahead of cold front, which will move into northeast Oklahoma Wednesday evening.
150 PM EDT Tue Sep 20 2022 High pressure tracking across Ohio from the northwest will provide dry weather today. Very warm temperatures are expected on Wednesday until a cold front moves in later in the day, bringing a good chance for showers and thunderstorms.
(Tonight) High pressure at the surface was over Lousiana as a 5h anticyclone sits just southwest of Texarkana.
215 PM CDT Tue Sep 20 2022 The cold front currently over eastern SD will continue to track to the east and south overnight. Behind the front, temperatures are much cooler, and that air is headed straight toward the CWA. Lows tnt will be modified somewhat by continued boundary layer mixing as high pressure works its way south. Wednesday will be much cooler and partly to mostly sunny, with highs generally in the 60s. Winds will also be light, but increasing high clouds could put a crimp on the lows. Deterministic models seem to be a little quicker with the exit of the trough compared to Clusters.
838 AM PDT Tue Sep 20 2022 Cooler conditions with below average temperatures will continue through Wednesday.
Overnight, some fog formation is expected in valley locations due to calm winds, clear skies, and low level moisture under the area of high pressure. Forecast lows are generally in the lower 60s. Light southwesterly flow continues to persist into Wednesday night as the strong cold front drops in from the north.
Issued by National Weather Service Wilmington OH 124 PM EDT Tue Sep 20 2022 A strong ridge of high pressure will bring dry and very pleasant weather to eastern Kentucky the next couple of days. Winds should be light and variable today and tonight, before shifting to the southwest on Wednesday at 5 to 10 mph, as high pressure shifts to the east, and a trough of low pressure aloft passes by to our north. Tonight's lows should fall into the upper 50s in our valleys the lower 60s on the surrounding ridges. The period will start with an upper level trough sinking southeast over the northeast CONUS, suppressing a strong ridge over the south central CONUS southwestward.
The upper level ridge that has been dominating our weather for the last several days will slowly slide east into our area tomorrow. Winds will continue to be out of the south, and may actually be lighter than today with the ridge directly over the top of our area.
132 PM EDT Tue Sep 20 2022 It will be warm with highs in the lower to middle 80s. Thereafter, look for a significantly cooler air mass for the latter part of the workweek into the weekend.
An upper low over Hudson Bay Canada and upper trough extending south into the Northern Plains and Great Lakes will drive in cooler air behind the cold front tonight. Monsoonal moisture will be in place on the western side of the upper ridge across the Four Corners Region into portions of southern Nebraska and northern Kansas. Kept highs Wednesday near the previous forecast from 60 to 65, as the latest MET and MAV guidance came in warmer.
1224 PM CDT Tue Sep 20 2022 (Today through Wednesday Night) Summer-like conditions can be expected today as a mid to upper level ridge lingers over Eastern Texas. 500mb heights within the ridge reach 594 dam with 850mb temperatures sitting around the 18-20C range. Subsidence from the ridge and dry conditions will largely suppress rain chances today. The aforementioned mid to upper level ridge will drift west towards Central Texas on Wednesday. Increasing subsidence from the ridge and diminishing moisture will bring clear skies during the day.
Wednesday's highs will be slightly warmer than today with temperatures mainly from the mid to upper 90s.
1223 PM CDT Tue Sep 20 2022 (Today through Wednesday) A strong upper level ridge has settled over the southern US. High pressure at the surface was centered to the east of our CWA and the winds were generally from the southeast. The upper ridge will shift a bit farther west during this period. The low level pattern will remain nearly unchanged. With the strong ridge over the area, most convection will be suppressed. Given the slight westward shift of the upper high, we will keep any mention of rain out of the forecast.
Dry weather is expected today, as the area is under high pressure.
1224 PM CDT Tue Sep 20 2022 (Today and tonight) Late summer pattern continues across West Central Texas with upper level high pressure dominating across the area.
(Tonight through Wednesday night) Mid to upper level ridging will stay positioned across the state through the short term with a very gradual westward drift. High temperatures this afternoon will primarily peak in the low to mid 90s but a few locations should climb into the upper 90s. Plenty of sunshine will be expected during Wednesday with no rain as conditions trend drier as the afternoon surface dew points fall into the 50s and the low 60s.
Issued by National Weather Service Fort Worth TX 1228 PM CDT Tue Sep 20 2022 (Today and tonight) High pressure continues to dominate the forecast through Wednesday.
122 PM PDT Tue Sep 20 2022 Cooler conditions and periods of gusty west winds will continue through Wednesday.
The upper high will slowly retrograde eastward, but strong high pressure influences will still keep temps hot into Wednesday, with record temps likely. Dewpoints should hold in the low to mid 60s when temps are warmest, so that should keep heat index values below advisory for the mid state tomorrow.
1243 PM CDT Tue Sep 20 2022 (Now through Wednesday) Mid-level ridging centered over the ArkLaTex region early this morning will continue to build south over the Lone State today. At the surface, broad high pressure across the northwest Gulf of Mexico will maintain light to moderate northeast to southeast winds across the region through the period.
235 PM CDT Tue Sep 20 2022 Pattern change in the works, beginning tonight as the upper level ridge begins to weaken. A strong area of low pressure over eastern Manitoba will slide east just north of the U. This system will drag a cold front across the region Wednesday through Wednesday evening. With the front just north of the I-70 corridor by 18z Wednesday, areas along and south of I-70 will still warm up well into the 90s for highs, while far northern portions of the forecast area will only warm up into the low 80s.
/NEW/ /Through Tomorrow/ The short term period will continue to feature warm temperatures and plentiful sunshine as North and Central Texas remains under the influence of high pressure aloft. Although temperatures will be a degree or two warmer Wednesday afternoon, the humidity will be slightly lower and result in heat indices near the ambient temperature.
Daytime highs may well occur by early afternoon across the northern CWA as cold air up north continues to ooze south behind the cold front. Winds still rather light and variable along and ahead of the trough, with fairly high humidity in the lower levels. Cooler air lags behind the front a bit as we don't see 850 mb temps drop below +10C until tonight.
140 PM EDT Tue Sep 20 2022 High pressure build into the area tonight. High pressure holds Tuesday and Wednesday.
High pressure sits over Texas and Oklahoma with return flow bringing in moisture from the Baja Peninsula. Meanwhile, a cold front will slip into the area from the north this evening and into the overnight hours. Cooler air will push in through the day , bringing unseasonably cooler temperatures to the region. High temperatures Wednesday will range from the low 60s to low 70s and may occur early in the morning, with temperatures continuing to fall through the day.
Dry weather is expected overnight, though wouldn't be surprised to see a few showers pop along a cold front that will move through late tonight into early Wednesday. The cooler airmass will begin to work into the area tomorrow, with highs back down to around normal values.
Calm weather conditions return tomorrow as high pressure to the west strengthens and brings drier contintental air into the forecast area where dewpoints are in the 60s.
The upper ridge over Central Texas continues to dominate the weather pattern, keeping us dry with above-normal temperatures.
Mostly clear to clear skies expected tonight with lows dipping into the low 70s for inland areas and mid to upper 70s for the Coastal areas.
1108 AM CDT Tue Sep 20 2022 (Rest of Today) A 5h anticyclone was centered over northeast TX this morning, with a prominent ridge axis in mid to upper levels extending east through the southeastern U. A few "ridge riders" have dropped through east TN into far east AL and northwest/west central GA. Have also reduced dew points a few degrees based on expected mixing in the lower atmosphere.
153 PM EDT Tue Sep 20 2022 High pressure build into the area tonight. High pressure holds Tuesday and Wednesday.
1156 AM CDT Tue Sep 20 2022 (The rest of today ) Another hot afternoon expected across the forecast area with strong upper high pressure firmly in place over the southern plain.
1056 AM MDT Tue Sep 20 2022 Current surface map places cold front across northeast Wyoming through the northern Black Hills into northwest South Dakota. Cold front will drop south of the forecast area this morning. Secondary cold front arrives tonight.
This Afternoon Right now the cold front is draped from SE South Dakota southwestward down into the Nebraska panhandle.
A stout 594dam upper ridge will remain centered over northeast Texas with a low-level thermal ridge extending into the Lower Mississippi Valley. In the wake of this looks to be a more amplified pattern with more NW type flow and what may end up being a more anchored E Conus trough. So what sensible weather will all this bring to our region? First, we will still be in a HOT low level flow pattern as this ridge is breaking down.
239 PM CDT Tue Sep 20 2022 Cold front currently over northern Nebraska will surge southward tonight and continue to push south across Kansas during the day on Wednesday.
Discussion: In the upper levels, a ridge centered near Texas continues to bring northwesterly flow to the region. At the surface, weak high pressure is over the Southeast.
Morning satellite imagery showing clear skies over the region and a large closed low off the CA coast.
Could see some isolated showers along this elevated f-gen (around 700 mb); however, we continue to lack moisture in the low levels, so have kept pops limited to slight chances. Breezy and cooler with more clouds on Wednesday, with highs in the mid 60s to near 70. GEFS probability show that some locales have a chance (<40%) of reaching or falling below 40 degrees for lows near/along the Buffalo Ridge. The ECMWF ensemble, however, is warmer.
1254 PM MDT Tue Sep 20 2022 Water vapor shows upper trof over southern Manitoba extending into the Northern Plains, weak upper ridge over the Northern Rockies, and upper low along the Northern CA coast.
624 PM CDT Tue Sep 20 2022 (Tonight) High pressure at the surface was over Lousiana as a 5h anticyclone sits just southwest of Texarkana.
650 PM CDT Tue Sep 20 2022 Cold front currently over northern Nebraska will surge southward tonight and continue to push south across Kansas during the day on Wednesday.
534 PM MDT Tue Sep 20 2022 Water vapor shows upper trof over southern Manitoba extending into the Northern Plains, weak upper ridge over the Northern Rockies, and upper low along the Northern CA coast.
It was looking like the cold front that was up in MN would move across WI quietly per the meso models, although that seemed a little too good to be true given the strength of this approaching front. The low level features will slide southeastward through portions of south central and southeast WI overnight while the main upper forcing moves straight east with the upper wave. Dry weather is expected overnight, though wouldn't be surprised to see a few showers pop along a cold front that will move through late tonight into early Wednesday. The cooler airmass will begin to work into the area tomorrow, with highs back down to around normal values.
The cold front currently over eastern SD will continue to track to the east and south overnight. Behind the front, temperatures are much cooler, and that air is headed straight toward the CWA. Lows tnt will be modified somewhat by continued boundary layer mixing as high pressure works its way south. Wednesday will be much cooler and partly to mostly sunny, with highs generally in the 60s. Winds will also be light, but increasing high clouds could put a crimp on the lows. Deterministic models seem to be a little quicker with the exit of the trough compared to Clusters.
642 PM CDT Tue Sep 20 2022 (This evening through Wednesday) A near carbon copy is expected the next 24 hours as a mid-upper level high continues to control our weather. The center of the high will edge westward, placing it even more directly overhead by Wednesday afternoon, though that will have very little affect with regards to our sensible weather.
Quasi-stationary mid/upper low continues to spin off the coast west of the Bay Area this afternoon. The low is still forecast to lift out across NorCal and into the PacNW on Wednesday with shower and thunderstorm chances continuing, mainly over the mountains and portions of the northern Sacramento Valley.
Drier and warmer weather conditions are forecast to return late in the week and last through the weekend. At this time moderate to strong cells are being observed along Hwy 36 near Bridgeville with radar indications of nickle to dime size hail while spotter reports coming in indicating near or slightly above pea size. The upper low is forecast to continue advancing northeastward across NW California on Wednesday. W and NW flow behind the low may lead to an uptick in showers for the North Coast.
554 PM CDT Tue Sep 20 2022 Pattern change in the works, beginning tonight as the upper level ridge begins to weaken. A strong area of low pressure over eastern Manitoba will slide east just north of the U. This system will drag a cold front across the region Wednesday through Wednesday evening. With the front just north of the I-70 corridor by 18z Wednesday, areas along and south of I-70 will still warm up well into the 90s for highs, while far northern portions of the forecast area will only warm up into the low 80s.
Calm weather conditions return tomorrow as high pressure to the west strengthens and brings drier continental air into the forecast area where dewpoints are in the 60s.
Winds were quite light, less than 10 knots, throughout most of the lower and middle troposphere.
550 PM CDT Tue Sep 20 2022 (The rest of this afternoon and tonight) Expansive upper high continues to dominate the overall weather pattern with only scattered afternoon CU. Low temperatures tonight should be a degree or two warmer from this morning as southerly winds persist with a modest increase in low level moisture. (Wednesday through Tuesday) Record breaking heat is still expected on Wednesday ahead of cold front, which will move into northeast Oklahoma Wednesday evening.
713 PM EDT Tue Sep 20 2022 High pressure build into the area tonight. High pressure holds Tuesday and Wednesday.
Otherwise, the high and dry weather continues, however it's very muggy this afternoon compared to the last several days. We'll easily max out in the lower 90s here in a couple of hours, with mid 90s possible in the west. Mostly clear skies are expected once again tonight, and have gone on the low-end of guidance for overnight lows due to ideal radiational cooling but overall warmer than we've seen the past few nights.
340 PM MDT Tue Sep 20 2022 Skies will continue to clear tonight with cooler temperatures as high pressure settles across the region. Overnight lows will generally be in the 30s by Wednesday morning, near freezing near the Canadian border as well as in deeper valleys.
748 PM EDT Tue Sep 20 2022 Aloft, a broad upper ridging will continue to extends over the Southeast U. For now, there is some drier air in the upper levels of the atmosphere, but there is enough moisture in the lower levels.
836 PM EDT Tue Sep 20 2022 High pressure will drop into the Southeast through Wednesday while a cold front approaches from the Great lakes.
(The rest of tonight) Strong high pressure ridge aloft and light south winds at the surface equal much above normal temperatures overnight, feeling more like July 20 rather than September 20. (Wednesday through Tuesday) Record breaking heat is still expected on Wednesday ahead of cold front, which will move into northeast Oklahoma Wednesday evening.
Warm advection in advance of the Wednesday cold front will hold overnight lows 5 to 10 degrees above the avgs.
As the related area of low pressure advances, expect a stronger push of instability and moisture is expected on Wednesday.
Temperatures are generally in the lower 80s, with dewpoints in the mid to upper 70s.
231 AM CDT Wed Sep 21 2022 Hot, humid air will be replaced by cool, drier air over the next 24 hours thanks to a cold front diving southeast across central IL today and tonight.
A cold front continues to sag southward through the state, bringing colder temperatures and increased moisture near the sfc.
(Today and tonight) An upper level ridge will remain firmly in control of the weather for today.
400 AM EDT Wed Sep 21 2022 A cold front moving from the northwest will bring the threat for strong thunderstorms today.
241 AM MDT Wed Sep 21 2022 Current surface map places high pressure across the Northern Plains.
1155 PM CDT Tue Sep 20 2022 Cold front currently over northern Nebraska will surge southward tonight and continue to push south across Kansas during the day on Wednesday.
308 AM EDT Wed Sep 21 2022 Discussion/Marine - Showers and storms developing through midday - The approaching strong cold front will trigger development of scattered showers and convection through the morning.
Offshore flow into Wednesday for warmer temperatures during the day and dry weather. Warm and dry weather with high pressure aloft and low level offshore flow into Wednesday.
Otherwise, upper and surface ridging will keep weather quiet with anomaly warm thickness/850mb temperatures producing highs in the upper 80s to lower 90s over much of the area. For tonight, ridging will remain in control until around daybreak.
/Today through Tuesday/ Key Messages: - Much cooler today with scattered showers and storms today mainly central and southern Iowa.
(Today and tonight) Upper level high will shift almost directly over West Central Texas this afternoon.
347 AM CDT Wed Sep 21 2022 KEY MESSAGES: - Considerably cooler air settles in beginning today.
854 PM PDT Tue Sep 20 2022 Cooler conditions and periods of gusty west winds will continue through Wednesday.
(Today) Another day of record and near-record heat is in store today underneath strong high pressure aloft.
Currently, a cold front extended from southeast Minnesota through southeast Nebraska and into northeast Colorado. By tonight, the cold front will be approaching the Ohio Valley.
1157 PM CDT Tue Sep 20 2022 (The rest of tonight) Strong high pressure ridge aloft and light south winds at the surface equal much above normal temperatures overnight, feeling more like July 20 rather than September 20. (Wednesday through Tuesday) Record breaking heat is still expected on Wednesday ahead of cold front, which will move into northeast Oklahoma Wednesday evening.
Thus, expect afternoon highs to be notably cooler than yesterday, as temperatures only rise into the mid to upper 60s - a welcomed reprieve for most! Otherwise, look for breezy conditions to quickly subside after sunset and cloud cover to briefly wane. Lows during this time will feel quite crisp, as another shot of CAA sends temperatures into the low to mid 40s. May even see a few locations along the Buffalo Ridge fall into the upper 30s, though this will largely depend on how quickly cloud cover builds back across the area.
This evening is where the shenanigans begin as the upper low, currently located in coastal northern California, makes its way northeast and through the center of the state.
Today through Tomorrow An area of showers and thunderstorms developed over northern Kansas and extended into southeast Nebraska late Tuesday night, ahead of the progressing cold front. Today will feel significantly cooler than the previous two days.