Aikyam-Lab/Synoptic-Bench huggingface dataset:
Otherwise high pressure and subsidence should keep southern Wisconsin dry tonight into Tuesday. Light and variable winds under high pressure will persist and the Wildfire smoke is expected to remain in the northwoods and western Wisconsin through tonight. Another round of very light showers will be possible tonight along the leading edge of a weakening cold front that is expected to sag south from Lake Superior/The UP and along another lake breeze tomorrow afternoon. Confidence is not very high that either feature (the lake breeze or weakening cold front) will be able to provide enough lift for showers.
Aloft, the flow was from the north- northwest out of central Canada, downstream of a ridge axis centered over the Rockies. Dry and seasonably cool weather will be the story through Tuesday and beyond as high pressure remains the dominant weather feature. Low temperatures should be similar to last night, in the lower 50s north and mid to upper 50s south. Highs may be a degree or two warmer, in the upper 70s to around 80 with comfortably low humidity.
1254 PM PDT Mon Aug 2 2021 Above average afternoon high temperatures will continue for the next few days across Central California due to a ridge of high pressure aloft.
120 PM EDT Mon Aug 2 2021 High pressure brings dry weather today. Persistent upper troughing brings isolated to scattered afternoon showers and storms Tuesday through the weekend. High pressure remains in control through tonight with dry conditions. Cooler as of late, in wake of front, and with upper trough across eastern U. The short term period begins with upper level troughing in place over the east coast atop the western periphery of low level moisture advection associated with the Bermuda High moving into the Middle Ohio Valley.
355 PM EDT Mon Aug 2 2021 Latest surface analysis shows high pressure to our NW over IL and a frontal boundary over the SE and deep south states, with multiple areas of low pressure along the front. Locally, the high pressure of IL is in control with drier air continuing to filter in and a comfortable light N/NE flow. Unsettled weather returns starting on Tuesday as a trough sets up from the Great Lakes down through the OH valley and deep south. Scattered showers and thunderstorms are expected, with the highest Pops over far E/SE KY where higher PWAT values and a theta ridge nose into the area from the south.
CDG Chattanooga Airport, TN 67 86 67 84 67 / 10 20 10 50 10 Knoxville McGhee Tyson Airport, TN 65 85 66 84 65 / 10 30 20 40 20 Oak Ridge, TN 64 85 64 83 64 / 10 30 20 40 10 Tri Cities Airport, TN 64 80 61 81 61 / 20 40 30 50 30.
229 PM CDT Mon Aug 2 2021 Continued generally dry and pleasant summer conditions are expected to persist, with the region remaining entrenched in northerly flow between upper ridging over the Rockies and broad troughing over the eastern CONUS.
Tomorrow, not much changes in the 500mb pattern as the ridge remains centered over the Western CONUS with a trough centered over the Eastern CONUS that keeps the area in northwest flow aloft. Near the surface, the lower pressure that has been northwest of the area moves closer during the daytime hours with a surface front orientated roughly north to south hanging off of it.
An upper ridge will remain in place keeping it dry with the main question being how much will any smoke impact low level visibilities. Forecast highs for Tuesday are also similar to today, but maybe a degree or two warmer in a few spots.
139 PM EDT Mon Aug 2 2021 A weakening cold front moves east of the region this morning. High pressure then builds into the area through midweek. Meanwhile, a nearly stationary frontal boundary south and east of the area will have waves of low pressure moving along the front. The boundary may move back towards the area at some point during the mid to late week period which would bring waves of low pressure closer to the area.
Temperatures will be cooler with overnight lows mostly in the lower to mid 60s.
239 PM CDT Mon Aug 2 2021 Fairly tranquil weather across the Tennessee Valley this afternoon as a vast majority of shower and thunderstorm activity (associated with a MCV/weak area of low pressure) is displaced well to our south. Still, broken to overcast decks of mid/high clouds have remained in place across the region which as helped to keep temperatures in check and reinforce this cooler air mass (19z readings in the upper 70s to lower 80s). As a result, highs in the low to mid 80s will be common each day, about 5-10 degrees below normal for early August.
Dry weather is expected through the short term period with a continued period of troughing in the Eastern United States and ridging across the West.
327 PM CDT Mon Aug 2 2021 Post-frontal surface conditions continue today across the Ozarks with "cooler" temperatures, low humidity, and northeast surface winds. Forecasted high temperatures today will likely run 5-10 degrees cooler than the climatological normal for August 2nd across the Ozarks. Broad troughing across the eastern half of the CONUS is promoting northwesterly flow aloft across the region.
125 PM MDT Mon Aug 2 2021 Upper ridge over the area this afternoon is breaking down a bit with a disturbance moving east into Montana.
Temperatures will reach the low to mid 70s today. High pressure is centered across the Mid-West today and extends east into western and north central NY. Slightly warmer temperatures expected Tuesday with highs in the mid to upper 70s.
1257 PM EDT Mon Aug 2 2021 VFR takes the form of a scattered to broken mid cloud layer this afternoon consisting mostly of shallow cumulus but also some altocu as a weak upper level trough slides over the Great Lakes. Surface observations of Td in the lower to mid 50s match up with model soundings that show little to no fog potential through sunrise Tuesday.
136 PM MDT Mon Aug 2 2021 Upper level analysis shows a ridge over the western CONUS, and clouds/smoke/haze pushing into the northern plains through northwest flow.
348 PM EDT Mon Aug 2 2021 High pressure will slowly build east over our region through late Tuesday.
Broad long-wave troughing remains over the eastern CONUS today and Tuesday while upper level ridging remains over the western CONUS. At the surface, a weak trough is evident in surface analysis with axis oriented from WSW to ENE from southeastern MS into central AL. This combined with the high moisture content through the column will yield a localized threat for flash flooding through this evening. Expect highs today to top out in the lower to middle 90's southeast of the I-65 corridor, and middle to upper 80's northwest.
For the second half of the week through the weekend the upper level ridge will build in from the east as the trough over the eastern U. High pressure stretching across southern Florida into the eastern Gulf of Mexico will keep southwest winds in place into midweek, then shifting to more southerly during the second half of the week as the ridge builds back into the area.
Currently this afternoon, broad upper troughing continues across the eastern half of the CONUS. North-northwest flow remains over the Plains, on the back side of the upper trough. The north/northwest flow continues to shunt smoke from the western US and Canada southward to the region, while subsidence around the high pressure brings the smoke closer to the surface at times.
201 PM EDT Mon Aug 2 2021 Dry weather is forecast for today as high pressure builds across the Great Lakes.
This moisture will slowly abate and drift of to the east over the next two days as high pressure quickly rebounds. Some lower valley locations in far NW Montana and over Central Idaho may rise towards the upper 90s and even into the low 100s.
A stagnant surface airflow pattern associated with ridging presently over the mid MO Valley is expected to maintain similar smoke concentrations across the area into tomorrow afternoon, per RAP/HRRR forecasts. Conditions are expected to improve by Tuesday night as low-level winds strengthen ahead of a lee trough shifting east from the High Plains.
Due to decent rainfall over the past 24hrs and high cloud cover today, our temperatures will be well below average this afternoon, sitting around the low to mid 80s. A ridge building off to our west along with the trough to our east will help dry us out for Tuesday.
244 PM CDT Mon Aug 2 2021 A trough is situated from the Great Lakes to the southern Mississippi River Valley with a ridge positioned over the Great Basin. Given the high pressure, smoke from the western U.
127 PM EDT Mon Aug 2 2021 Quiet weather is expected through the week as high pressure lingers. Comfortable 50s dewpoints will persist today into tomorrow under weak low level ridging.
253 PM EDT Mon Aug 2 2021 High pressure brings dry weather today. Persistent upper troughing brings isolated to scattered afternoon showers and storms Tuesday through the weekend. High pressure remains in control through tonight with dry conditions. Cooler as of late, in wake of front, and with upper trough across eastern U. Tuesday evening is relatively a quiet day with high pressure out to the east pulling up some moisture in with an inverted trough over the area.
Another hot and humid day, with afternoon highs in the low 90s and heat indices ranging from 100-105. Overnight lows will be in the low to mid 70s.
Chattanooga Airport, TN 85 67 86 67 84 / 10 10 20 10 50 Knoxville McGhee Tyson Airport, TN 85 65 86 66 84 / 10 10 20 20 40 Oak Ridge, TN 84 64 85 64 83 / 10 10 20 20 40 Tri Cities Airport, TN 83 61 80 61 81 / 10 10 30 30 50.
The temperature forecast leans on the cooler short term model blend which indicates a couple of degree increase Tuesday.
As an upper low drops over the lower Mississippi Valley, expect northerly winds, low humidity and clear skies.
1146 AM MDT Mon Aug 2 2021 The upper ridge over the western CONUS is expected to remain for much of this week, but begins to break down a bit by Tuesday as the upper trough deepens over the eastern CONUS.
925 AM MDT Mon Aug 2 2021 Upper ridge will be over the region today with hot and dry weather. More cloud cover will allow temperatures on Tuesday to be slightly cooler.
1228 PM EDT Mon Aug 2 2021 Fair, pleasant, and seasonably cool (comfortable) conditions early this week will trend warmer with a gradual increase in precipitation potential through late week. Most areas appear to stay dry with temps trending slightly warmer through Wed. Cooler temperatures and dry weather will be short lived as we transition into a warmer and wetter pattern. An upper level trough and closed low positioned over the Ohio River Valley since Monday will transition out of the area by later in the week.
With respect to the very cool and even locally record lows from last night, the expectation for tonight still be on the low side of the overall guidance, and we'll choose the upper 50s as closer to the trend with MOS. There a signals of a possibility of elevated showers or thunderstorms near the far southwestern sections , around Elkhart late morning Tuesday which looks like a warm air advection response as stronger synoptic low moves over the northern states and a mid level trough influences the region for about 24 hours.
259 PM EDT Mon Aug 2 2021 Dry weather is forecast for tonight as high pressure extends across the Great Lakes. Most of the region will remain dry on Tuesday as high pressure continues to influence our area.
Overnight temperatures will range from the high 60s to low 70s. The large scale pattern will consist of west coast ridging and east coast troughing through much of the period, with remnant negative 500 mb height anomalies in the area. The primary trough axis will be east of the ArkLaMiss putting us under northwest flow aloft and in a drier surface airmass with weak northerlies into late week. Near the remnant front, some elevated rain chances may remain, mostly confined to the highway 84 corridor. By weekend, the upper troughing begins to move north and easy away from the area and upper heights rise.
/issued 629 AM CDT Mon Aug 2 2021/ A much more quiet and cooler pattern is in store for the Mid South this week. Expect a gradual warming trend near the end of the week as temperatures climb back into the lower 90s.
1157 AM CDT Mon Aug 2 2021 Currently have upper troughing extending from the eastern Great Lakes down into the Ohio Valley with strong upper ridging extending from the Northern Rockies down into the Desert Southwest. At the surface, high pressure extends from the Upper Mississippi Valley into the southern High Plains. Not much is expected to change in the overall pattern for today through Tue with northwest flow aloft remaining over the Plains which will be reinforced by additional upper energy tracking out of the Upper Mississippi Valley and into the base of the trough by Tue morning.
1000 PM CDT Mon Aug 2 2021 Continued generally dry and pleasant summer conditions are expected to persist, with the region remaining entrenched in northerly flow between upper ridging over the Rockies and broad troughing over the eastern CONUS.
Slightly warmer temperatures expected Tuesday with highs in the mid to upper 70s.
Upper ridge was undercut by a trough from ID into eastern UT. Upper trough to the west shifts east-northeast across the CWA, providing large scale lift for convection.
Would expect as the afternoon progresses and lapse rates steepen over a warmer surface that CG strikes become more common.
933 PM EDT Mon Aug 2 2021 Dry weather is forecast for tonight as high pressure extends across the Great Lakes. Most of the region will remain dry on Tuesday as high pressure continues to influence our area.
An upper level trough continues to encompass the eastern U. The western edge of the trough is situated overhead, resulting in northwesterly flow aloft. The limiting factor is surface to mid-level ridging that extends from the southwestern Great Lakes into the central plain, resulting in a drier northeasterly component in the surface flow with dewpoints largely ranging form the mid-50s to around 60 degrees. The one exception will likely be within riverbeds and valleys, where warmer water temperatures will have localized impacts with the cooler nighttime temperatures.
622 PM CDT Mon Aug 2 2021 A trough is situated from the Great Lakes to the southern Mississippi River Valley with a ridge positioned over the Great Basin. Given the high pressure, smoke from the western U.
445 PM CDT Mon Aug 2 2021 Continued generally dry and pleasant summer conditions are expected to persist, with the region remaining entrenched in northerly flow between upper ridging over the Rockies and broad troughing over the eastern CONUS.
High pressure over the upper Midwest continues to control the area's weather, and expect skies to continue to be mostly clear through the overnight. Dry weather is expected through the short term period with a continued period of troughing in the Eastern United States and ridging across the West.
Fairly tranquil weather across the Tennessee Valley this afternoon as a vast majority of shower and thunderstorm activity (associated with a MCV/weak area of low pressure) is displaced well to our south. Still, broken to overcast decks of mid/high clouds have remained in place across the region which as helped to keep temperatures in check and reinforce this cooler air mass (19z readings in the upper 70s to lower 80s). As a result, highs in the low to mid 80s will be common each day, about 5-10 degrees below normal for early August.
Above average afternoon high temperatures will continue for the next few days across Central California due to a ridge of high pressure aloft.
957 PM CDT Mon Aug 2 2021 A fairly quiet/seasonably mild evening is underway across the mid TN Valley this Mon night, with high pressure layered from the NE states WSW into the Midwest region. Current temp trends in the lower/mid 70s will also continue to gradually fall more into the lower/mid 60s overnight hrs, under partly cloudy skies. As a result, highs in the low to mid 80s will be common each day, about 5-10 degrees below normal for early August.
728 PM CDT Mon Aug 2 2021 The remnants of a cold front will continue to slowly slide southward across the terminals overnight into tomorrow. /issued Issued by National Weather Service Fort Worth TX/ /Tonight through Tuesday/ A cold front will continue to slide southward through the region tonight, clearing the CWA on Tuesday.
656 PM CDT Mon Aug 2 2021 Post-frontal surface conditions continue today across the Ozarks with "cooler" temperatures, low humidity, and northeast surface winds. Forecasted high temperatures today will likely run 5-10 degrees cooler than the climatological normal for August 2nd across the Ozarks. Broad troughing across the eastern half of the CONUS is promoting northwesterly flow aloft across the region.
826 PM EDT Mon Aug 2 2021 Dry weather is forecast for tonight as high pressure extends across the Great Lakes. Most of the region will remain dry on Tuesday as high pressure continues to influence our area.
Temperatures are down to the lower 70s as we approach sunset, and are on track to reach the mid 50s over most of central and southeast Illinois.
Afternoon satellite imagery depicts interior NorCal situated between an eastern Pacific trough and ridge of high pressure centered over the Desert Southwest, bringing dry southwesterly flow to interior NorCal. Afternoon highs are generally running 2 to 8 degrees cooler compared to 24 hours ago.
Thereafter strengthening high pressure over the Atlantic could lead to occasional weak nocturnal surges through the end of the week.
While high pressure noses in from the southwest and skies have cleared region-wide, some westerly flow aloft will remain or even slightly strengthen overnight and keep some wind going just above the ground while calm winds remain at the surface. Nice afternoon with temperatures in the lower to mid 70s and clearing skies today as high pressure ridges into the north country. The area of high pressure will remain over the Northeastern CONUS through the entire near term portion of the forecast. A cold front will approach from Canada, but not quite make it into our area late in the day Tue into Tue night. Temperatures will trend a couple degrees warmer each night and day, with a return to normal temperatures by later this week.
532 PM MDT Mon Aug 2 2021 Upper level analysis shows a ridge over the western CONUS, and clouds/smoke/haze pushing into the northern plains through northwest flow.
1153 PM CDT Mon Aug 2 2021 Post-frontal surface conditions continue today across the Ozarks with "cooler" temperatures, low humidity, and northeast surface winds. Forecasted high temperatures today will likely run 5-10 degrees cooler than the climatological normal for August 2nd across the Ozarks. Broad troughing across the eastern half of the CONUS is promoting northwesterly flow aloft across the region.
Below normal temperatures will continue through the middle of the week with daily highs in the lower to middle 80s and overnight lows in the low to middle 60s.
Cloudy skies will allow temperatures be somewhat cooler today.
A ridging pattern remains aloft over the western United States and there is a trough to the east. Besides the haze, skies will be sunny with seasonal highs in the low 90s.
359 AM EDT Tue Aug 3 2021 The Great Lakes region remains entrenched within a synoptic scale longwave trough that will undergo some compression throughout today as the governing PV anomaly consolidates and ejects through the eastern Ohio Valley. Any (thunder)showers that manage to spawn during the late afternoon and evening timeframe may produce more virga than rainfall given the large dewpoint spread in the lowest 4 kft and shallow convective depths.
An upper level trough will extend from Hudson Bay south through Indiana toward Mississippi, proving a northwest flow through a deep layer into Illinois.
The lee trough will be slightly deeper today, so as a result, slightly stronger southerly winds of 10 to 20 mph will prevail throughout the daylight hours. Convection looks to still develop on the higher terrain of Colorado. Dewpoints are expected to run in the lower 50s by morning.
318 AM EDT Tue Aug 3 2021 500mb analysis shows a broad trough digging across the eastern part of the country.
The RAP and to some extent the high-res NAM both show a small window of time with some potential showers, but show this development dissipating soon.
125 AM EDT Tue Aug 3 2021 High pressure will continue to build east across the Great Lakes overnight where it will reside through the majority of the week. Slightly warmer temperatures expected Tuesday with highs in the mid to upper 70s.
1228 AM CDT Tue Aug 3 2021 (06Z TAFS) Region will remain on east side of upper ridge. Due to decent rainfall over the past 24hrs and high cloud cover today, our temperatures will be well below average this afternoon, sitting around the low to mid 80s. A ridge building off to our west along with the trough to our east will help dry us out for Tuesday.
A fairly quiet/seasonably mild evening is underway across the mid TN Valley this Mon night, with high pressure layered from the NE states WSW into the Midwest region. Current temp trends in the lower/mid 70s will also continue to gradually fall more into the lower/mid 60s overnight hrs, under partly cloudy skies. As a result, highs in the low to mid 80s will be common each day, about 5-10 degrees below normal for early August.
300 AM EDT Tue Aug 3 2021 Dry and seasonable over the next couple of days, with warmer and more humid weather developing this weekend.
Another day with mostly sunny skies will also bring the upper 80s and low 90s to the area, most likely a 1 to 3 degrees warmer than yesterday.
High pressure will remain across northern sections of the U. Temperatures will remain below normal with highs in the low to mid 80s.
344 AM EDT Tue Aug 3 2021 Expect mainly dry weather today as high pressure moves east across the Great Lakes.
1106 PM MDT Mon Aug 2 2021 Upper level analysis shows a ridge over the western CONUS, and clouds/smoke/haze pushing into the northern plains through northwest flow.
110 AM EDT Tue Aug 3 2021 Dry weather is forecast for tonight as high pressure extends across the Great Lakes. Most of the region will remain dry on Tuesday as high pressure continues to influence our area.
Through the night, a mid/upper level closed low will drop south from the Great Lakes to the OH Valley, with a jet streak across the TN Valley and southern Appalachians. Best chances for precipitation will be northeast, so plan to include vicinity and prob30 groups at TRI and just vicinity at TYS to try to time the higher probability periods. LW Chattanooga Airport, TN 86 67 85 67 87 / 20 20 40 10 20 Knoxville McGhee Tyson Airport, TN 85 65 85 65 88 / 30 20 50 20 20 Oak Ridge, TN 85 64 84 64 87 / 30 20 50 10 20 Tri Cities Airport, TN 80 61 81 61 84 / 50 30 60 30 30.
Satellite imagery shows upper-level troughing in place across much of the midwest and into the northeast, with the Pittsburgh forecast area in southwest flow downstream of the mean trough axis. Much of the area will drop into the 50s for lows, though a few typically-cooler spots may even see readings in the 40s by dawn.
Another cool and quiet night across the region under northwesterly flow aloft, with high pressure in control at the surface. almost 10 degrees cooler than average lows this time of year. Near- surface smoke concentrations are once again progged to decrease toward mid-day, though should be enough aloft to keep temperatures from getting higher than the lower to mid 80s.
348 AM CDT Tue Aug 3 2021 Broad upper trough continues to dig southward this morning over the eastern US, and will help keep us a bit cooler with highs in the 80s for the next few days. By this afternoon, the trough axis will be to our west, and some isolated showers and storms may develop on the Plateau, otherwise dry conditions will continue for the rest of the mid state.