Aikyam-Lab/Synoptic-Bench huggingface dataset:
802 AM EDT Mon Sep 2 2024 High pressure dominates through mid week. Next cold front arrives at the end of the week. Current temperatures run from the 50s away from the lakeshore to the lower 60s near it. High pressure drifts towards the southern Great Lakes from the upper Mississippi Valley with northerly flow continuing across the CWA. Weak low pressure trough will set up over Lake Erie tonight into Tuesday without much fanfare to the sensible weather except for some wind direction changes making them highly variable over and in the vicinity of Lake Erie.
628 AM EDT Mon Sep 2 2024 Drier and cooler conditions will settle into the area through midweek before warmer air builds back in late week.
Temperatures will continue to remain above normal for the next several days with excessive heat conditions expected to materialize mid to late week as high pressure strengthens over the Desert Southwest. In between these two features is an elongated upper-level ridge, which will expand over the Desert Southwest in the upcoming days. Large scale subsidence on the back side of the upper-level low moving into western TX and from the expanding upper-level ridge will usher in a much drier air throughout the entire tropospheric column, essentially eliminating the instability completely. This mid-level subsidence will persist throughout the entire work week and thus will completely hinder thunderstorm activity, even for the higher terrain areas. Temperatures through Tuesday will remain 3-5 degrees above normal with afternoon highs ranging between 105-111 degrees across the lower deserts.
644 AM EDT Mon Sep 2 2024 Cooler and drier conditions will prevail today, with fall like temperatures prevailing. High pressure will bring mostly sunny weather and slowly warming temperatures through much of the week.
615 AM EDT Mon Sep 2 2024 High pressure dominates through mid week. Next cold front arrives at the end of the week. Current temperatures run from the 50s away from the lakeshore to the lower 60s near it. High pressure drifts towards the southern Great Lakes from the upper Mississippi Valley with northerly flow continuing across the CWA. Weak low pressure trough will set up over Lake Erie tonight into Tuesday without much fanfare to the sensible weather except for some wind direction changes making them highly variable over and in the vicinity of Lake Erie.
The region will be sandwiched between departing high pressure to the east and an approaching low over Montana and Wyoming. The upper ridge and the southerly sfc flow are expected to help push temperatures into the 90s west river, though elevated wildfire smoke could moderate forecast highs a few degrees. But, the strongest winds should shift a bit farther east Tuesday morning as the low moves into the western Dakotas. The southerly flow under the ridge will also push warmer temperatures farther east with highs reaching into the 80s and 90s on Tuesday.
542 AM CDT Mon Sep 2 2024 - Canadian high pressure will bring pleasant weather to the region today and Tuesday.
Northerly winds will continue to keep drier air in place today, and although highs will reach the upper 80s/lower 90s, lower dewpoints will keep heat indices confined to the lower 90s. An upper trough axis will continue to shift off the East Coast today while broad upper ridging moves east over the Central Plains. At the sfc, high pressure will move southeast into the Ohio Valley and will be the dominating factor in more pleasant weather locally.
639 AM EDT Mon Sep 2 2024 A much cooler and drier air mass will build in today in wake of a cold front passage. Dry conditions will persist through the work week with high pressure in place. The main cold front has cleared the entire area.
1043 AM EDT Mon Sep 2 2024 High pressure builds into the region thru the middle of the week, gradually moving offshore mid to late week.
906 AM CDT Mon Sep 2 2024 - Much warmer temperatures are expected today and Tuesday with widespread highs back into the 80s and 90s.
1036 AM EDT Mon Sep 2 2024 Drier and cooler conditions will settle into the area through midweek before warmer air builds back in late week.
The Atlc ridge axis north of the local waters today will maintain a south to southeast flow with rich moisture and scattered to numerous showers/storms. A stronger high pressure area to the north will build across the area Tue-Wed and produce a more East to Southeast flow but moisture will remain high.
735 AM EDT Mon Sep 2 2024 High pressure builds east through the middle of the week, gradually moving offshore mid to late week.
(Now through Tuesday night) The mid/upper trough over the eastern CONUS will lift northeastward to become situated along the Eastern Seaboard from New England to the Mid-Atlantic States through tonight. In the wake of the departing mid/upper trough, a mid/upper ridge will build over the Southeast States. At the surface, a large high pressure area across the Upper Midwest will shift eastward across the Great Lakes to the northeast CONUS while a weak easterly wave moves across the Gulf and Deep South. Highs today and Tuesday will reach the low to mid 90s, with heat indices as high as 106 degrees for some locations.
High pressure will bring hotter temperatures by mid week. High pressure building through southern CA and Arizona will bring hotter temperatures with less moisture this week. Meanwhile, heights and thicknesses will support a steady heating trend with excessive heat levels through much of the lower deserts by mid week. If a ridge remains anchored more or less to our west and northwest, that will also tend to keep any tropical activity out of the picture.
Mid morning surface analysis had a dry cold front across northern Mississippi. Along and ahead of the cold front a layer of stratus has formed and was as far south as our Highway 82 corridor but Local radars remain quiet in our CWA. The wind ahead of the cold front was already northerly minimizing low level convergence but with daytime heating of the moist airmass ahead of the cold front, a few late afternoon showers will be possible generally along and south of our Highway 84 corridor. High temperatures are expected to be in the mid-90 and overnight lows in the lower 70s with some areas reaching the upper 60s.
628 AM CDT Mon Sep 2 2024 -Slightly cooler weather expected today.
629 AM CDT Mon Sep 2 2024 - Much warmer temperatures are expected today and Tuesday with widespread highs back into the 80s and 90s.
617 AM EDT Mon Sep 2 2024 High pressure dominates through mid week. Next cold front arrives at the end of the week. Current temperatures run from the 50s away from the lakeshore to the lower 60s near it. High pressure drifts towards the southern Great Lakes from the upper Mississippi Valley with northerly flow continuing across the CWA. Weak low pressure trough will set up over Lake Erie tonight into Tuesday without much fanfare to the sensible weather except for some wind direction changes making them highly variable over and in the vicinity of Lake Erie.
This wet/unsettled pattern, all courtesy of that broad area of low pressure that has been lingering just off the Upper TX coast, will eventually track inland by late tonight/tomorrow. A steady E/SE flow at the lower and mid levels will help to keep high PWs (2.
Deep tropical moisture remains across the area today fed by S/SE flow below a trough axis that extends roughly from JAX- CTY. High pressure over the NE US will build down the eastern seaboard and push offshore midweek. A deep mid level trough is forecast to dive southward across the Great Lakes and NE states late week and this weekend. The mid level ridge over the SW Atlc will largely hold, preventing the front from pushing cleanly thru the area. The Atlc ridge axis north of the local waters today will maintain a south to southeast flow with rich moisture and scattered to numerous showers/storms. A stronger high pressure area to the north will build across the area Tue-Wed and produce a more East to Southeast flow but moisture will remain high.
513 AM EDT Mon Sep 2 2024 High pressure will then build over Pennsylvania today, bringing a sustained stretch of cooler, dry and less humid conditions for the first week of September and the start of meteorological fall.
557 AM EDT Mon Sep 2 2024 High pressure builds east through the middle of the week, gradually moving offshore mid to late week.
Isolated showers and thunderstorms return to Mohave County as well as the higher terrain of southern Nevada this afternoon. This closed low will usher mid-level moisture into the southwestern Great Basin, which will increase shower and thunderstorm chances for Esmeralda, southern Nye, and Lincoln counties. This moisture is not enough to saturate the lower levels of the atmosphere, so the largest impacts today are dry lightning (thus increased risk of fire starts) and gusty winds from the direction of strong storms. In addition to increased precipitation chances, this low will tighten pressure gradients in the southwestern Great Basin, which will increase southerly wind gusts this afternoon.
738 AM EDT Mon Sep 2 2024 - Relatively cool and comfortable, mostly sunny Labor Day - Warm mid-week period then a late week cool down with showers - Relatively cool and comfortable, mostly sunny Labor Day Upper-level ridging and sprawling high pressure over the Great Lakes today into Tuesday will provide tranquil weather. A few daytime cumulus clouds may develop, and good mixing to 850 mb where temperatures are around 7 C should yield highs in the lower 70s today, several degrees cooler than normal. Tuesday will be a few degrees warmer as a southerly component to the wind commences with the center of high pressure moving east of the area.
There is a weakness in the mean-layer ridge from the Bahama Banks to Central America. Surface analyses place a broad area of weak low pressure across the western two-thirds of the Gulf of Mexico. The Florida Keys are in between the freshening anticyclonic flow over the Bahamas and the festering low pressure in the Gulf of Mexico. A weak trough over the southeastern Gulf will pull away from the Keys coastal waters today, resulting in breezes shifting to the southeast.
617 AM EDT Mon Sep 2 2024 A much cooler and drier air mass will build in today in wake of a cold front passage. Dry conditions will persist through the work week with high pressure in place. The main cold front has cleared the entire area.
High pressure will promote breezy to gusty northeast winds over the ridges tonight and Tuesday night.
708 AM EDT Mon Sep 2 2024 High pressure will then build over Pennsylvania today, bringing a sustained stretch of cooler, dry and less humid conditions for the first week of September and the start of meteorological fall.
640 AM EDT Mon Sep 2 2024 High pressure will then build over Pennsylvania today, bringing a sustained stretch of cooler, dry and less humid conditions for the first week of September and the start of meteorological fall.
623 AM CDT Mon Sep 2 2024 (Today through Tuesday) A broad upper level low west of the Big Bend is forecast to elongate northeast into West Texas today and tonight. In the lower levels, a broad area of low pressure off the mid Texas coast is forecast to drift west today and inland over South Texas as an inverted trough Tuesday.
A weak upper trough will produce cloudier and cooler conditions across Western Washington today along with a chance of a shower or isolated thunderstorm over the Cascades. A ridge will rebuild over the area midweek for a return to dry and warmer conditions.
Temperatures will continue to remain above normal for the next several days with excessive heat conditions expected to materialize mid to late week as high pressure strengthens over the Desert Southwest. In between these two features is an elongated upper-level ridge, which will expand over the Desert Southwest in the upcoming days. Large scale subsidence on the back side of the upper-level low moving into western TX and from the expanding upper-level ridge will usher in much drier air throughout the entire tropospheric column, essentially eliminating the instability completely. This mid- level subsidence will persist throughout the entire work week and thus will completely hinder thunderstorm activity, even for the higher terrain areas. Temperatures through Tuesday will remain 3-5 degrees above normal with afternoon highs ranging between 105-111 degrees across the lower deserts.
241 PM EDT Mon Sep 2 2024 - Tranquil weather continues - Another warm up, another cool down - Tranquil weather continues High pressure is in control of our weather, leading to cool mornings and mild afternoons. Tuesday will feature slightly warmer daytime temperatures as 850 mb temps rise a few degrees to around 10C-11C. - Another warm up, another cool down September tends to be a roller coaster type of month as the Great Lakes transitions from the hot summer temperatures to much cooler fall temperatures. High pressure that's over us right now will be centered over the Mid Atlantic coast by mid week.
216 PM EDT Mon Sep 2 2024 Scattered showers and thunderstorms this evening, mainly across northern SC as a trough moves into the area. A cold front brings wedgelike conditions into the region by Tuesday, lasting through much of the week. The primary axis of the stout mid-level trough is crossing over the area early this afternoon, with falling heights and winds aloft shifting out of the west-northwest. The very strong associated high pressure over the Great Lakes is driving substantial drier air across much of the northern tier of the US. Key Message(s): - Much cooler temperatures expected.
2) A cold front will lead to isolated thunderstorms forming over western and central Montana on Tuesday. WEATHER PATTERN OVERVIEW: Upper ridging will keep dry weather conditions in place for now across the CWA, but a cold front will push through late Tuesday.
An area of low pressure continues to sit just off the coast and has been responsible for near continuous convection just offshore since early this morning.
There may be a brief reduction in coverage across the area later this evening, but most of the high resolution model guidance points to an increase in showers/thunderstorms after midnight into Tuesday.
(Tonight) After some post-frontal early morning stratus, clouds have given way to clear skies across the Tennessee Valley as an upper trough shifts east off the Atlantic Coast and broad upper ridging centers over the Central Plains. At the sfc, high pressure will shift southeast from the Great Lakes and into the northern Appalachians, keeping drier northeasterly winds in place. With occasionally breezy northeast winds forecast overnight and relatively warm H85 temps, overnight lows will be on the warmer side ranging from the low to mid 60s.
That being said, the max temperature could reach the low 90s during rainfall breaks when the sun manages to peek through the clouds.
128 PM EDT Mon Sep 2 2024 High pressure dominates through mid week. Next cold front arrives at the end of the week. High pressure drifts towards the southern Great Lakes from the upper Mississippi Valley with northerly flow continuing across the CWA. Weak low pressure trough will set up over Lake Erie tonight into Tuesday without much fanfare to the sensible weather except for some wind direction changes making them highly variable over and in the vicinity of Lake Erie.
Showers and thunderstorms will continue to develop through this afternoon and evening as an upper low approaches from the west. The warmer temperatures later this afternoon will enhance the threat of strong to isolated severe wind gusts to around 60 mph with the thunderstorms through this evening.
Dry weather persists through the remainder of the workweek as high pressure dominates. As the upper trough axis passes overhead this afternoon, mid-level temperatures will additionally trend cooler, resulting in elevated coverage of fair-weather cumulus atop the boundary layer across much of eastern New York and western New England. Temperatures will fall to morning lows in the mid 30s to mid 40s across the region, with the cooler temperatures in higher terrain.
Tuesday, high pressure starts to develop over the eastern TN Valley, with flow transitioning to an easterly and southeasterly direction.
107 PM EDT Mon Sep 2 2024 - Relatively cool and comfortable, mostly sunny Labor Day - Warm mid-week period then a late week cool down with showers - Relatively cool and comfortable, mostly sunny Labor Day Upper-level ridging and sprawling high pressure over the Great Lakes today into Tuesday will provide tranquil weather. A few daytime cumulus clouds may develop, and good mixing to 850 mb where temperatures are around 7 C should yield highs in the lower 70s today, several degrees cooler than normal. Tuesday will be a few degrees warmer as a southerly component to the wind commences with the center of high pressure moving east of the area.
Satellite imagery shows upper low onshore at the Oregon/California border. As the low shifts out of the region late Tuesday, northwest flow sets in with upper ridge beginning to rebuild to the west.
110 PM CDT Mon Sep 2 2024 (Today through Tuesday) A broad upper level low west of the Big Bend is forecast to elongate northeast into West Texas today and tonight. In the lower levels, a broad area of low pressure off the mid Texas coast is forecast to drift west today and inland over South Texas as an inverted trough Tuesday.
240 PM EDT Mon Sep 2 2024 (This afternoon through Tuesday) At a glance: - Warmer today, cooler tomorrow - Afternoon thunderstorm chances taper off A cold front riding the leading edge of a lifting mid-level trough will be trekking slowly southeastward across north and central Georgia over the course of the next 36 hours. This will serve to reinforce the cooler and drier conditions ushered in by the passage of the aforementioned cold front. Cloudier skies are likely tomorrow, especially for areas within the cool dome (Atlanta to Athens and all points east), with highs as much as 8-10 degrees cooler -- in the mid-70s to mid-80s.
226 PM EDT Mon Sep 2 2024 The synoptic pattern aloft this afternoon features troughing north of the area with a ridge over the Atlantic extending westward over the state. At the surface, the ridge axis remains across south Florida, with a southeasterly low-level flow continuing across the local area.
325 PM EDT Mon Sep 2 2024 High pressure will build over Pennsylvania today, bringing a sustained stretch of cooler, dry and less humid conditions for the first week of September and the start of meteorological fall.
High pressure will bring hotter temperatures by mid week. Combined with the lower relative humidity in the mid- levels of the morning sounding, these are strong signals that a generally dry day across southeastern Arizona can be expected. /issued 231 AM MST Mon Sep 2 2024/ High pressure building through southern CA and Arizona will bring hotter temperatures with less moisture this week. Meanwhile, heights and thicknesses will support a steady heating trend with excessive heat levels through much of the lower deserts by mid week. If a ridge remains anchored more or less to our west and northwest, that will also tend to keep any tropical activity out of the picture.
(Tonight through Tuesday night) Surface analysis this afternoon shows a stationary front stretched across Central Texas and a trough from near Rocksprings to Laredo to the coast rotating around a low over the Gulf.
139 PM EDT Mon Sep 2 2024 High pressure builds into the region thru the middle of the week, gradually moving offshore mid to late week.
Meanwhile, a mid-level trough is currently moving into Oregon, and ascent ahead of this feature will prompt low-level cyclogenesis over the northern plains. As a result, northeasterly winds will veer southeasterly by tomorrow afternoon and the lower dewpoint temperatures observed today will creep upward with the change to return flow. Clouds begin diminishing from west to east tomorrow afternoon through late evening hours as the trough axis shifts east of our area.
Isolated showers and storms possible over the high terrain of southern Nevada and northwest Arizona today. Drier and hotter conditions develop mid and late week as high pressure builds.
228 PM MDT Mon Sep 2 2024 Hot and dry conditions are already in place for much of the area, with many locations in the upper 80s to low 90s, and locations along the foothills have humidity values in the low teens, all as of 1 PM. Tonight will also see a brief backdoor cold front that will help alleviate some of the hot temperatures, but that said, Tuesday still looks to see temperatures ~10 degrees above normal. As the trough swings through, it lingers enough Tuesday night to allow showers to persist overnight into Wendesday morning before fully exiting Montana.
1226 PM CDT Mon Sep 2 2024 - Much warmer temperatures are expected today and Tuesday with widespread highs back into the 80s and 90s.
205 PM EDT Mon Sep 2 2024 Tonight will feature the coolest temperatures since Spring, under a crisp clearing sky as Canadian high pressure settles in. The very dry air mass and clearing sky, under building high pressure, will provide ideal radiational cooling conditions tonight. Forecast temperatures were thus aimed on the low end of model guidance, placing lows mostly in the upper 30s to mid 40s. The other exception is that in the immediate vicinity of the Finger Lakes, it may be tough to get any lower than upper 40s thanks to the relatively warmer water. Full sunshine with dry high pressure directly overhead, will result in a very pleasant day with a wide diurnal range; highs of mid 60s to mid 70s.
200 PM CDT Mon Sep 2 2024 - Warmer temperatures are expected this afternoon and Tuesday with widespread highs back into the 80s and 90s.
233 PM CDT Mon Sep 2 2024 Tonight and Tuesday: Mid afternoon surface analysis had a dry cold front nearly along Interstate 20. Per satellite imagery/RAP analysis, this cold front was losing its upper level support as the upper level trough has shifted well east of Mississippi. Models still suggest the cold front will have enough momentum to drop just south of Interstate 20 before stalling later tonight. This cold front will bring drier air, including surface dew points in the lower 60s and lowering PWATs below an inch and a half, into the northern portions of our CWA. Along and south of the cold front this afternoon into early evening there will be a very low chance of a few showers. Despite the dry cold front and rain chances Tuesday afternoon, warmer than normal temperatures will continue tonight and Tuesday.
Isolated showers and thunderstorms return to Mohave County as well as the higher terrain of southern Nevada this afternoon. Largely dry conditions today with 10-25% rain chances over the higher terrain of NW Arizona and S Nevada.
This will primarily be across the lower half of East Texas, but also can't rule out a few stray showers or storms over parts of North Louisiana. Overnight lows will range from the upper 60s far north to the lower and mid 70s south. In addition, a weak inverted trough shifting westward across the northern GOM may also aid in the development of convection late in the day through the evening and overnight hours.
Highs Tuesday remain manageable, in the low to upper 80s.
201 PM EDT Mon Sep 2 2024 Drier and cooler conditions will settle into the area through midweek before warmer air builds back in late week.
High pressure will bring hotter temperatures by mid week, with above normal temperatures expected through the remainder of the week. As a high pressure ridge builds across the western CONUS, increasing thicknesses will work to increase temperatures across southeastern Arizona this week.
Highs tomorrow will be a few degrees cooler than today with many locations staying the 70s.