Aikyam-Lab/Synoptic-Bench huggingface dataset:
Many locations were experiencing the coldest night of the season so far, courtesy of cold high pressure centered over Missouri. Associated clear skies, light winds and very dry air has allowed temperatures to cool into the lower to mid 20s, with some colder drainage locations reporting upper teens as of 2 am. with a longwave trough over the Appalachians and a ridge axis just west of the Rockies. Forecast soundings show mixing to around 925 mb this afternoon, which would lead to highs from the lower 50s over northwest IL, to the central and upper 50s elsewhere over the forecast area. Forecast lows were trended closer to the low end of model guidance, from the lower 30s northeast to upper 30s in the far south.
342 AM CST Mon Nov 2 2020 An upper-level trough will continue to progress eastward into the Northeast today with subsidence via mid-level height rises across the Midwest. At low levels, west-southwesterly flow will begin to advect warmer air into the region with 850-hPa temps rising to around 6. On Tuesday, low- level WAA will continue as an upper-level ridge shifts into the central U.
307 AM CST Mon Nov 2 2020 (Issued 315 AM CST Mon Nov 2 2020) Today through Tuesday: Mostly quiet day expected as high pressure pushes south of the region with a low pressure system across central Canada. However winds will be primarily from the southwest given the high pressure to the south so for the most this should be expected to bring warmer conditions back to the region with highs expected to reach the upper 40s to low 50s. This will start the trend of warmer temperatures with Tuesday featuring primarily southwest winds with broad low pressure across western Canada and broad high pressure in the southeast US. Highs Tuesday should reach the low to mid 60s as temps should overachieve with respect to models.
Morning lows are in the mid/upper 20s on the low end and above freezing for parts of the southern RRV. Large scale ridge will continue to build east today with rising heights and northwest then westerly zonal flow developing later today into Tuesday. Considering the favorable flow and very warm temps aloft potential is there for most locations to reach the mid 50s and even the lower 60s can't be ruled out within the RRV and locations west. Westerly flow Tuesday will be even more favorable, and guidance is showing a strong signal for mid 60s in the RRV and west, with "cooler" spots of our CWA in the mid-upper 50s (mainly MN).
This will push high pressure across the region today and Tuesday. As the high shifts eastward on Tuesday, southerly flow will kick in, bringing temperatures back up into the 60s and 70s.
406 AM CST Mon Nov 2 2020 After the active weekend, we are about to enter a period of much quieter weather, with a broad upper level ridge building over the central CONUS through at least the first part of the work week. This will allow warmer temperatures to surge into the area on general west-southwest flow with sunshine.
654 AM EST Mon Nov 2 2020 High pressure in the Upper Midwest will settle over the Gulf states later today. Flow will turn to the southwest on Tuesday, permitting warmer temperatures to return to the region.
446 AM CST Mon Nov 2 2020 (Today and tonight) We will continue the Frost Advisory for south-central and southeast counties of our CWA through 9 AM, generally the area where we have not had widespread freezing temperatures yet. A light freeze may also occur in the low lying spots within the advisory. Southerly flow will increase this afternoon as low level ridge continues its progression to our southeast.
A deep trough extends from this feature down into the southeast CONUS which for now is keeping tropical activity suppressed well into the lower latitudes. A broad ridge is basically taking up the remainder of the pattern East of the Missouri River. A Rex low is sitting under this ridge off the SoCal coast attm with a clockwise circulation over the Southern High Plains. The low will be absorbed into the flow by Tuesday morning and flushed eastward on Tuesday as the pattern across the mid latitudes flattens out.
518 AM CST Mon Nov 2 2020 All sites VFR through the TAF period as the area is under high pressure. Quiet weather in the short term as the area is under high pressure at the surface. Drier and slightly cooler air has filtered in behind yesterday's front and will lead to another pleasant afternoon. This will give us overnight lows a few degrees warmer than this morning, but still in the 40s.
Expect min temps ranging from the upper 20s over the interior to the lower to mid 30s near the Great Lakes under mostly clear skies, except for some lingering lake clouds over the tip of the Keweenaw and eastern counties. Really no change to the thinking of the past several days for how the rest of this week plays out from Tuesday onward: still looks very warm and tranquil for this time of year with a strong, compact Polar Vortex and mid-latitude ridging covering nearly all of the CONUS.
Dry high pressure will once again maintain clear skies and VFR throughout this TAF package. The main driver for the quiet weather is a large area of high pressure that is sitting in the middle of the county. This area of high pressure will broaden out and stretch from west Texas too off the Georgia/ Carolina coast late tonight. A ridge of high pressure aloft also extends from deep south Texas northward along the rockies.
305 AM MST Mon Nov 2 2020 Overnight GOES WV/IR imagery revealed a upper low off the southern CA coast, a upper trough axis along the Eastern Seaboard, and upper ridge axis from TX to the Pacific Northwest. The upper ridge axis to the west will translate east to the Front Range tonight. It will be breezy over the higher terrain.
406 AM MST Mon Nov 2 2020 Dry and mild weather continues today as the upper ridge axis shifts eastward across CO. High cloudiness will invade from the southwest overnight as the west coast closed low weakens and lifts northeastward towards the Great Basin. Not expecting any precipitation overnight from this, but high cloudiness along with lee troughing should keep more mild low temperatures over the region. -KT An upper-level ridge will sit in place over the western U.
Eastern Oklahoma and western Arkansas will see another jump in temperatures on Tuesday as a ridge of high pressure builds aloft over the area.
433 AM MST Mon Nov 2 2020 The upper level ridge extending over Great Basin will shift slowly east across the state today and tonight. Lee troughing will aid the warming with a light downslope contribution. This all adds up to high temperatures several degrees warmer than yesterday. Most of the plains should hit the lower to mid 70s, with upper 50s and 60s in the foothills. Mountain areas will be in the mid 40s through the 50s, although slightly cooler readings are possible in Middle Park around Kremmling where inversions and snow cover still exist. Overnight lows will be similar or just a couple degrees warmer than this morning's. Clear skies will give way to increasing cirrus clouds tonight, mainly behind the ridge axis. Election day will see a weakening trough approach Colorado with very little QG ascent associated with it.
High pressure will continue to bring above normal temperatures and sunny skies to much of central Idaho and western Montana. An incoming weather system is expected to flatten the ridge on Tuesday, bringing a slight increase in wind, leading to the warmest day of the week.
406 AM MST Mon Nov 2 2020 Dry weather, along with much warmer than average temperatures, will continue this week with a return to colder temperatures and some rain and snow, during the weekend. Subsidence associated with an upper ridge to the west, along with westerly downslope winds at the surface, will push high temperatures into the 70s many days this week.
407 AM CST Mon Nov 2 2020 As of 09Z, the highly amplified midlevel pattern remains across the CONUS with troughing across the east and ridging in the west. At the surface, a ridge axis extends from southwest TX through western IL. This ridge axis will continue its eastward progression through the morning, allowing southerly flow to return area-wide. The warming trend will continue through the week as midlevel ridging overspreads the Plains, yielding high temperatures predominately in the 70s.
/issued 330 AM CST Mon Nov 2 2020/ An upper level ridge will move overhead today. Increased downslope component and increase in thicknesses to result in warmer temperatures today with highs expected to be 5-7 degrees over yesterday.
Overnight tonight, with the center of the high pressure over our region, conditions will be prime for radiational cooling. While most locations will drop to just the mid-30s, it's entirely possible that some isolated spots may drop to freezing in the northern part of our CWA. /10/ The coldest morning of the week looks to be Tuesday morning, where overnight lows will drop to the lower to mid 30s.
Snow showers will wane this morning as the cold mid level core associated with the exiting low pressure trough warms. A building ridge in response to ern Pacific/wrn CONUS troughing will support dry weather and moderating temperature for the remainder of the week. Passage of another area of low pressure to the NE may increase area cloudiness by Tuesday morning, including an MVFR stratus deck to FKL/DUJ, as wind becomes slightly more NW and taps a weak moisture fetch from Lake Erie.
High pressure will build in from the west today, bringing subsidence and clear skies to the CWA. High temperatures will be 5-10 degrees below average thanks to cold air advection in the wake of a cold front that has passed through. Highs will be 5- 10 degrees warmer on Tuesday as the air mass modifies under a sunny sky.
If anything, the atmosphere Tuesday appears to be a bit warmer, with 00z NAM/GFS both warming 850 mb temperatures to near 19C at Dodge City.
As of 09Z, the highly amplified midlevel pattern remains across the CONUS with troughing across the east and ridging in the west. At the surface, a ridge axis extends from southwest TX through western IL. This ridge axis will continue its eastward progression through the morning, allowing southerly flow to return area-wide. The warming trend will continue through the week as midlevel ridging overspreads the Plains, yielding high temperatures predominately in the 70s.
330 AM CST Mon Nov 2 2020 An upper level ridge will move overhead today. Increased downslope component and increase in thicknesses to result in warmer temperatures today with highs expected to be 5-7 degrees over yesterday.
524 AM CST Mon Nov 2 2020 (Today and tonight) Quiet weather will continue today across West Central Texas, with a mid-upper level high pressure in place.
244 AM MST Mon Nov 2 2020 Dry weather, along with much warmer than average temperatures, will continue this week with a return to colder temperatures and some rain and snow, during the weekend. Subsidence associated with an upper ridge to the west, along with westerly downslope winds at the surface, will push high temperatures into the 70s many days this week.
Air temps are running in the upper 30s and low 40s north and some warmer mid 40s mixed south. The cold high pressure air mass is 1034mb over AR and still sinking into the midSouth.
Sheets of high clouds will spread over the area from the west and southwest this afternoon and tonight as an upper low off the southern CA coast begins to move inland.
337 AM CST Mon Nov 2 2020 The chilly high pressure system that brought several hours of sub- freezing temperatures to much of the forecast area this morning will gradually shift east towards the East Coast during the first part of the work week. After another unseasonably chilly day today, with highs only in the lower half of the 50s, readings should make it back up into the 60s on Tuesday.
525 AM CST Mon Nov 2 2020 After the active weekend, we are about to enter a period of much quieter weather, with a broad upper level ridge building over the central CONUS through at least the first part of the work week. This will allow warmer temperatures to surge into the area on general west-southwest flow with sunshine.
The main driver for the quiet weather is a large area of high pressure that is sitting in the middle of the county. This area of high pressure will broaden out and stretch from west Texas too off the Georgia/ Carolina coast late tonight. A ridge of high pressure aloft also extends from deep south Texas northward along the rockies.
No major issues are expected the next few days as the cool/dry air mass in the wake of the cold front settles over SE TX. Light north and northeast winds will prevail with high temperatures in the low to mid 70s this afternoon. With a more E/SE low-level flow develop- ing tomorrow, highs should be a bit warmer, mainly in the mid 70s. Continued cool/clear tonight with lows ranging from the low to mid 40s inland to the mid and upper 50s at the immediate coast.
SFC winds are light NE or calm and will be NE today 4-8KTS as high pressure settles into the four state area. Overnight the airmass will begin to move E of the MS river and after one more below average start, a warmer trend will return with flow back off the Gulf. Air temps are running in the upper 30s and low 40s north and some warmer mid 40s mixed south. The cold high pressure air mass is 1034mb over AR and still sinking into the midSouth.
445 AM MST Mon Nov 2 2020 Overnight GOES WV/IR imagery revealed a upper low off the southern CA coast, a upper trough axis along the Eastern Seaboard, and upper ridge axis from TX to the Pacific Northwest. The upper ridge axis to the west will translate east to the Front Range tonight. It will be breezy over the higher terrain.
/issued 1049 AM CST Mon Nov 2 2020/ As of 1630z, temperatures across the area are ranging from the lower to upper 50s across the area, which is where they were expected to be this morning. Air temps are running in the upper 30s and low 40s north and some warmer mid 40s mixed south. The cold high pressure air mass is 1034mb over AR and still sinking into the midSouth.
Temperatures remain above freezing in most areas. This will be nearly 5 to 8 degrees warmer than today. Even with light winds, feel temperatures may push past the 90th percentile and towards the highest model temperatures or even beyond in some locations. This would place most of the region in the lower to middle 70s, with a few upper 70s also not ruled out.
Cold and breezy conditions will continue into the day on Tuesday as high pressure gradually builds in. Gusty winds will taper off during the day Tuesday as the pressure gradient over Pennsylvania weakens, thanks to the arrival of high pressure. Reduced wind speeds tomorrow will help enhance boundary layer heating and bump temperatures closer to normal - mid 40s in the northern and western mountains and mid 50s across the Lower Susquehanna. As winds weaken and high pressure arrives, the lake effect snow machine will turn off, temperatures will moderate, and any precipitation will be hard to come by.
1158 AM CST Mon Nov 2 2020 (Today and tonight) Quiet weather will continue today across West Central Texas, with a mid-upper level high pressure in place.
Overnight GOES WV/IR imagery revealed a upper low off the southern CA coast, a upper trough axis along the Eastern Seaboard, and upper ridge axis from TX to the Pacific Northwest. The upper ridge axis to the west will translate east to the Front Range tonight. It will be breezy over the higher terrain.
249 PM CST Mon Nov 2 2020 This afternoon, a mid-level trough remained across the eastern CONUS with ridging to the west and a closed upper low was present near the California coast. Warm and dry conditions will persist through the end of the week as the ridge axis moves over the Plains.
High pressure surface and aloft will hold over South Texas during the period. Highs will be 1-3 degrees warmer on Tuesday.
A bit cooler temperatures are expected across the MN lakes and trees. Morning lows are in the mid/upper 20s on the low end and above freezing for parts of the southern RRV. Large scale ridge will continue to build east today with rising heights and northwest then westerly zonal flow developing later today into Tuesday. Considering the favorable flow and very warm temps aloft potential is there for most locations to reach the mid 50s and even the lower 60s can't be ruled out within the RRV and locations west. Westerly flow Tuesday will be even more favorable, and guidance is showing a strong signal for mid 60s in the RRV and west, with "cooler" spots of our CWA in the mid-upper 50s (mainly MN).
1024 AM MST Mon Nov 2 2020 Dry weather, along with much warmer than average temperatures, will continue this week with a return to colder temperatures and some rain and snow, during the weekend. Subsidence associated with an upper ridge to the west, along with westerly downslope winds at the surface, will push high temperatures into the 70s many days this week.
(This evening through Tuesday) Dry and pleasant weather will persist across West Central Texas the next 24 hours, with an upper level short ridge influencing the region. Clear to partly cloudy skies will prevail tonight, with overnight lows in the lower 40s.
Windy/Cooler/Drier Continue Today with Very Hazardous Surf and As a cold front continues to move south of the local area, skies have cleared across most of east central FL with some lingering clouds for the eastern half of St Lucie and Martin counties.
Latest guidance suggests that deep-layer NNW flow will persist throughout the day, in the gradient between a longwave trough shifting eastward off the Atlantic coast and a mid-level subtropical high centered across the Rio Grande Valley. The breezy conditions this afternoon will come to end by this evening as a high pressure system to our west slowly slides east overnight. This will set up ideal radiational cooling conditions with light winds and clear skies dropping temperatures across the area into the lower 30s. While not expecting sub-freezing temperatures tonight due to higher surface dewpoints, areas of frost are certainly possible. By Tuesday, an upper level ridge settles in across the southeast warming temperatures back up to near their climatological norms for this time of year in the upper 60s to near 70 by mid week.
210 PM EST Mon Nov 2 2020 Cold and dry high pressure will control the weather through midweek. High pressure will remain nearly stationary across the Deep South tonight. Considering most locations northwest of US 1 dropped to temperatures near freezing last night, have issued a freeze warning once again for a similar area again tonight (no counties had a widespread enough freeze to warrant canceling the growing season). With the large upper trough having moved offshore, flow will become more zonal on Tuesday, allowing for some temperature moderation to occur. Some light westerly flow is expected at the surface with high pressure building into the southeast.
156 PM MST Mon Nov 2 2020 Unseasonably warm temperatures next few days as a strong upper level ridge continues to dominate the region.
Satellite imagery this afternoon was showing a highly anomalous upper ridge in control over the western CONUS with a cutoff low situated over CA. Downstream a deep trough extended from New England down the eastern seaboard.
SHORT TERM (Tonight through Tuesday night): 500mb ridge across south Texas tonight will move little Tuesday through Tues night. high pressure across the southeast United States will gradually shift eastward Tuesday into Tues night allowing an onshore flow to return along the lower Texas coast Tues afternoon. Lows will be cooler tonight than Tues night as the winds veer to the east Tuesday and southeast Tues night.
(Tonight and Tuesday Deep mid to upper lvl trough just off shore the east coast continues to move east today while a ridging extends from the southern plains northeast into the Rockies. Another night of cold temperatures is expected tonight as high pressure near the surface brings clear skies and light winds. On Tuesday, upper lvl heights begin to build ahead of an upper lvl ridge. We start the period with high pressure at the surface and an upper ridge building over the area providing a mostly clear sky and light winds.
/Issued 1206 PM CST Mon Nov 2 2020/ /Through Tomorrow/ Fairly tranquil weather conditions are expected through tomorrow as an upper ridge traverses across the state from west to east.
Overall quiet conditions in the short term as an upper level ridge over the southern Rockies and southern plains will keep the winds at 500 mb westerly and the 700-850 mb winds will be southwesterly. A trough coming out of eastern Colorado in the afternoon could have enough mid to higher level moisture to provide some cirrus to mid level clouds in the late afternoon and early evening.
1042 AM MST Mon Nov 2 2020 Dry and mild weather continues today as the upper ridge axis shifts eastward across CO. High cloudiness will invade from the southwest overnight as the west coast closed low weakens and lifts northeastward towards the Great Basin. Not expecting any precipitation overnight from this, but high cloudiness along with lee troughing should keep more mild low temperatures over the region. -KT An upper-level ridge will sit in place over the western U.
1027 AM PST Mon Nov 2 2020 High pressure today will produce sunny skies, light winds and mild temperatures.
A building ridge in response to ern Pacific/wrn CONUS troughing will support dry weather and moderating temperature for the remainder of the week.
VFR through the period at all sites as cold advection prevails and high pressure builds behind a departing cold front. CDG Chattanooga Airport, TN 55 36 63 41 69 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 50 34 60 39 68 / 0 0 0 0 0 Oak Ridge, TN 52 32 61 38 67 / 0 0 0 0 0 Tri Cities Airport, TN 48 30 57 36 67 / 0 0 0 0 0.
135 PM CST Mon Nov 2 2020 135 PM CST Currently, deep upper-level troughing is in place across the eastern United States with ridging across the west. Overnight, modest low-level moisture advection from the Plains will gradually raise surface dew points, acting to "floor" lows in the lower 30s area wide. Tomorrow, southwesterly winds will resume but with less gusto (literally) as the low-level pressure gradient eases somewhat. Highs will climb into the lower 60s thanks to the eastward advection of a plume of seasonably warm 850 mb temperatures (sampled at +12 to +15 C on upstream 12Z RAOBs) and ample sunshine.
246 PM CST Mon Nov 2 2020 A broad H500 ridge through the central and western U.
Winds and seas continue to decrease as the high pressure ridge settles into south Texas.
250 PM EST Mon Nov 2 2020 Dry and sunny conditions are expected through the short term as high pressure dominates the area. Clear skies overnight will allow northeast Georgia to cool down into the low 30s. A few counties in northwest Georgia will near freezing.
Relatively deep northwest flow aloft will relax heading through Tuesday with broad upper ridging spreading east through mid-week.
Once the deep trough near the East Coast lifts out into the Atlantic, the upper flow pattern will deamplify over the CONUS with the stronger northern branch of the westerlies well to the north of us. This will lead to warmer than average and tranquil weather this week.
1028 AM EST Mon Nov 2 2020 High pressure in the Upper Midwest will settle over the Gulf states later today. Flow will turn to the southwest on Tuesday, permitting warmer temperatures to return to the region.
216 PM CST Mon Nov 2 2020 135 PM CST Currently, deep upper-level troughing is in place across the eastern United States with ridging across the west. Overnight, modest low-level moisture advection from the Plains will gradually raise surface dew points, acting to "floor" lows in the lower 30s area wide. Tomorrow, southwesterly winds will resume but with less gusto (literally) as the low-level pressure gradient eases somewhat. Highs will climb into the lower 60s thanks to the eastward advection of a plume of seasonably warm 850 mb temperatures (sampled at +12 to +15 C on upstream 12Z RAOBs) and ample sunshine.