Aikyam-Lab/Synoptic-Bench huggingface dataset:
(This evening through Wednesday) Overall benign weather should continue through Wednesday afternoon as weak ridging will build in over Texas during this time. Given the aforementioned ridging, temperatures will be in the low to mid 70s, which is about ten degrees above normal for this time of year.
The main change to was to warm the mountain locations a bit more aggressively into the middle of the week as the high pressure system builds back in, and mountain locations will remain well mixed above the valley inversion layer. Despite the inversion, northern Utah valley locations will largely remain in the low to mid 50s, and even near 60 in the central valleys, given the lack of snow cover and moisture in the boundary layer. High pressure is expected to remain in place across the region into this weekend, with little change in day to day weather expected.
WAA will again rev up late tonight as the mean upper trough in the NE PAC shifts east and forces the bulk of the downstream ridge east Wed-Thur. This will allow even warmer Pac downslope air into the region, with widespread 60s expected on the plains for highs both days, including a few 70s on the SD plains. In addition, a weak backdoor cool front will settle across the far NE FA, which could also support cooler temps, esp if it ends up further SW.
The cold front should veer winds out of the north by 06Z for TAF sites in the Permian Basin. A weak cold front will move into the Texas Panhandle this morning, slowly move south and arrive in the Permian Basin this evening and tonight. In fact, high temps tomorrow will be similar to today and in some places may even be slightly warmer.
Elevated northeast winds behind the associated cold front this morning will usher in modest cool advection, trimming afternoon temperatures to the lower 60s. Winds will subside rapidly to light and variable this evening as weak high pressure settles in. As such, expecting temperatures to remain above normal through sunrise Wednesday, in the lower to mid 30s. One of the nicest days of the year expected again, with few clouds, light winds, and unseasonably warm afternoon temperatures in the lower 70s. Followed the warmer MAV guidance given its performance with yesterday's record warmth, and increased max temps several degrees.
332 PM EST Tue Nov 30 2021 Discussion/Marine -Patchy Fog Possible Tonight Sfc ridging moves in tonight and clears out much of the lingering low clouds. Will need to watch for the possibility of some patchy fog/freezing fog developing given the moist boundary layer conditions and elevated dew points from today's melting snow. The warm front pushes in from the west on Wednesday, with an accompanying chance of rain showers. If precip were to develop before Noon however there could be a brief period of light snow or mixed of rain and snow before temperatures warm up into the lower to mid 40s.
A weak trough crossing the area early this morning will bring cooler temperatures to the CWA today with highs in the 40s, to the mid 50s. An area of low pressure and mid level trough will cross the region late this afternoon through the overnight hours, bringing light rain, with a brief rain/snow mix possible in the far northeastern CWA. Warm air advection on the back side of the low pressure will likely cause temperatures to warm after midnight.
Temperatures have warmed quite quickly this morning after starting out around freezing, most sites are already in upper 40s to lower 50s. The only exception is across northeast AL where sites are still in the lower 40s. Overall a very pleasant day with high pressure overhead. A substantial warming trend will occur mid to late week as the aforementioned high pressure ridge amplifies over the Deep South.
Further north temperatures are a little bit cooler due to a front that has moved across portions of the fa. Highs Wednesday are still expected to be above average, with central and southern portions of the fa similar or a few degrees cooler than today whereas northern parts of the fa are expected to be a couple of degrees warmer than today.
A surface cold front will push southward through the CWA through the remainder of the afternoon without much impact other than a period of modest northerly winds. /DWK The weather pattern is still expected to be fairly quiet through late week as upper ridging continues to dominate. The blocking pattern over the southwestern US/Baja will continue through late week as well. Models have come somewhat in agreement with the evolution of the upper low associated with the block, but even so the solution is still different from the past several model runs.
A continued period of quiet weather is expected through the week with high pressure remaining in control. Dry conditions with temperatures about 10 to 15 degrees warmer than normal can be expected. Skies are clear over northern Arizona with a ridge building in over the West Coast and into the Great Basin.
On Wednesday, highs are expected to be mainly in the low 70s across the area (a few mid 70s in the local hot spots). Lows tonight will also be slightly warmer then what occurred this morning with lows tonight ranging mainly between 40 to 45 degrees across the area except at the immediate coast where upper 40s to near 50 are expected.
231 PM CST Tue Nov 30 2021 (Issued 231 PM CST Tue Nov 30 2021) Tonight through Wednesday night: Breezy northwest winds will become lighter this evening as high pressure briefly builds in overhead. We have warmed up a bit more than anticipated today and this could impact how low temperatures get overnight so have adjusted them a few degrees warmer than the previous forecast. With the 925mb warm nose and southwest winds keeping temperatures a little warmer should see more rain than snow compared to the previous forecast.
245 PM EST Tue Nov 30 2021 Rest of Today through Wednesday: High pressure continues to dominate across South Florida. As high pressure begins to slide eastward winds will gradually begin to veer the next two days to northeasterly then easterly.
1236 PM EST Tue Nov 30 2021 High pressure will nose into the Ohio Valley today leading to dry conditions through tonight. Mid and high cloud cover is generally decreasing as high pressure pushes in from the southwest, with more clouds lingering across the southern half of the FA according to satellite imagery. Winds ahead of the high may gust around 20 knots this afternoon. High pressure builds in from the south overnight. Fairly clear skies and calming winds early overnight under the high will allow temperatures to quickly drop into the 30s.
Regarding precipitation type, the general thinking is that most of the area will see rain thanks to surface temperatures already above freezing and temperatures aloft being rather warm. The general expectation is for the highest snowfall totals to fall within north central Minnesota, where colder temperatures and stronger forcing exists. Snow covered areas will likely not be able to overcome the strong warm advection tomorrow, so temperatures will likely be cooler tomorrow. What is uncertain is where the cooler temperatures arrive as we are still waiting to see where snow accumulates tonight.
224 PM CST Tue Nov 30 2021 High pressure will bring fair weather through the rest of this evening and most of tonight. Late tonight into Wednesday morning, a warm front will begin to lift across the region and will bring a chance for some light rain early in the day. This afternoon, high pressure is centered over northern Missouri and is progged to shift east across central Illinois this evening into tonight. Temperatures are expected to fall into the lower to mid 30s tonight, then will warm into the 50s Wednesday afternoon.
348 PM EST Tue Nov 30 2021 High pressure will nose into the Ohio Valley leading to dry conditions tonight.
CDG Chattanooga Airport, TN 38 65 45 68 46 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 37 61 47 65 45 / 0 10 0 0 0 Oak Ridge, TN 37 59 45 65 44 / 0 10 0 0 0 Tri Cities Airport, TN 32 56 43 61 43 / 0 10 10 0 0.
522 PM CST Tue Nov 30 2021 (This evening through Wednesday) Overall benign weather should continue through Wednesday afternoon as weak ridging will build in over Texas during this time. Given the aforementioned ridging, temperatures will be in the low to mid 70s, which is about ten degrees above normal for this time of year.
If there isn't some thinning of the clouds later tonight the lows will need to be raised some more. The air mass would support near record highs in the lower 70s on the plains if it were sunny with a little breeze. The current forecast handles this well although we could get a little more wind into the lower foothills where that tends to happen, i.
JKL Unseasonably warm weather the next few days with strong mixing across the region as a dampened upper level ridge shifts across the area.
204 PM MST Tue Nov 30 2021 The Tri-State area will be under northwest flow aloft due to high pressure sitting along the West Coast through the short term period.
So along with warmer overnight lows, fog development should also expand a bit further north as well. Upper ridging that's been in place begins to flatten and edge further east late Wednesday night.
Small-scale impulses transiting the larger-scale trough over our region should yield a few passing batches of high-level clouds. Tonight's lows should end up within a couple degrees of 40F, with some locations slipping into the lower to middle 30F range along the I-59 corridor northeast of Birmingham.
A low amplitude ridge of high pressure will persist over the Northern Rockies for the next several days.
Due to advection of dry air aloft into the back end system, some slight chances for freezing rain among the snow showers is possible, but the main form of precipitation should be snow. Along the North Shore, southerly flow in the lower atmosphere could enhance snowfall both from local terrain and lake effects.
Light winds will veer from the north to the east as high pressure moves over the western Atlantic. Temperatures will be a few degrees warmer tonight but still dropping to the upper 40s for rural locations across the interior and lower 50s elsewhere. And a few degrees warmer too for Wed with highs in the mid-upper 70s.
A leeward trough is making its way across OK while at the same time a small high is hanging out over NW MO.
Sky cover grids were updated to include the high cloud through early morning Wednesday. Areas west of the Rockies can expect lows in the lower to mid 20s. If there isn't some thinning of the clouds later tonight the lows will need to be raised some more. The air mass would support near record highs in the lower 70s on the plains if it were sunny with a little breeze. The current forecast handles this well although we could get a little more wind into the lower foothills where that tends to happen, i.
A weather system moving through the Great Plains region today has shifted the high pressure axis west, lessing upper heights over Northern California and causing surface pressure gradients to begin tightening. Expect gusts up to 20-30 mph, locally up to 40+ mph near wind prone gaps, canyons, and ridgetops. High pressure builds back over California tomorrow with flow becoming more zonal for the end of the week.
A ridge of high pressure is building over the west coast.
644 PM EST Tue Nov 30 2021 Aviation -Patchy Fog Possible Tonight Sfc ridging moves in tonight and clears out much of the lingering low clouds. Will need to watch for the possibility of some patchy fog/freezing fog developing given the moist boundary layer conditions and elevated dew points from today's melting snow. The warm front pushes in from the west on Wednesday, with an accompanying chance of rain showers. If precip were to develop before Noon however there could be a brief period of light snow or mixed of rain and snow before temperatures warm up into the lower to mid 40s.
With the higher dewpoints, there could be some patchy fog early Wednesday morning. The surface, 9h and 8h troughs do not appear to be in phase with the upper wave and arrive Wednesday night. The lower to mid levels will be far too dry for precipitation Wednesday, but a significant amount of mid and high cloud layers should develop/arrive by midday into the afternoon hours. The thermal ridge at 850 mb and deep layer mixing will be sufficient despite the clouds to yield high temperatures in the middle to upper 60s.
943 PM EST Tue Nov 30 2021 High pressure will nose into the Ohio Valley leading to dry conditions tonight.
626 PM EST Tue Nov 30 2021 High pressure will nose into the Ohio Valley leading to dry conditions tonight.
A clipper system at the surface and a short wave trough will combine to bring some light rain to the region this evening. Upper ridging builds back in on Wednesday with a dry airmass and good westerly mixing winds at the sfc enhanced by a jet streak aloft. The period starts off with flat ridging over the western CONUS, but toward the weekend energy will start to dig out a trof over the central/eastern CONUS with mid-level ridging getting shifted to near or off the west coast.
Winds should eventually turn around to the south as a warm front moves through, but that may not occur until after sunrise.
547 PM CST Tue Nov 30 2021 High pressure will bring fair weather through the rest of this evening and most of tonight. Late tonight into Wednesday morning, a warm front will begin to lift across the region and will bring a chance for some light rain early in the day. This afternoon, high pressure is centered over northern Missouri and is progged to shift east across central Illinois this evening into tonight. Temperatures are expected to fall into the lower to mid 30s tonight, then will warm into the 50s Wednesday afternoon.
High pressure keeps Nevada mild and dry for the next several days, with near record warmth across central part of the state.
956 PM EST Tue Nov 30 2021 Latest surface analysis places high pressure center over the Wabash with a subtle warm front creeping eastward across the KY/TN border and a cold front analyzed across the Great Lakes into northern IL. Overall, very light QPF is expected less than a tenth of an inch, however will keep notable pops in the high chance range along and north of I-64. Wednesday brings another round of mild temperatures with highs in the low 50s north, to low 60s south.
429 PM MST Tue Nov 30 2021 00Z TAF CYCLE Sct high clouds along the nrn border of NM where nwly flow aloft is prevalent as well as over portions of srn NM due to a weak upper low located off Baja CA. Diminishing winds over the ern plains through 01/02Z with a weak lee trough developing by 01/18Z.
620 PM Update: Regional radars show precipitation associated with a trough rotating out of Lake Erie gradually moving towards the Allegheny National Forest area. Elsewhere, we are still anticipating a mostly dry night underneath a building low/mid-level ridge. Otherwise, temperature will be near freezing overnight with the coldest temperature south of Pittsburgh where clearing is likely to remain.
High pressure at the surface will continue to slide east of the forecast area through Wednesday. Lows tonight will again be a little warmer than those from the past couple of nights. With the aforementioned high clouds increasing this evening and overnight, look for lows to range from the lower to middle 40s.
647 PM EST Tue Nov 30 2021 High pressure remains over the southeast U. Gradual warming trend through the remainder of the week as high pressure will continue to hold over the forecast area with mostly clear to partly cloudy skies and dry conditions.
745 PM EST Tue Nov 30 2021 High pressure tonight. High pressure builds in for the end of the work week. A high pressure system will provide dry weather tonight. Some models suggest that the higher elevations could see snow mix in at times Wednesday afternoon. An upper level trough sweeps through the area to open up the forecast period.
434 PM CST Tue Nov 30 2021 Precipitation has increased along the warm front and extends as far south as Bismarck. At the surface, a warm front will slowly move from west to east, bringing with it widespread mid to high clouds. A cold front will be dipping south out of Canada in the afternoon or early evening, so northern sites may not have enough time reach their potential highs. Also, with the strong warm air advection ahead of the front, abundant cloud cover may work to keep highs a bit cooler.
Quiet night as high pressure & dry air favor a chilly night. With lead & weaker trough axis progged to move in, increasing ascent & associated high cloudiness is possible after midnight. High pressure at the surface will continue to slide east of the forecast area through Wednesday. Lows tonight will again be a little warmer than those from the past couple of nights. With the aforementioned high clouds increasing this evening and overnight, look for lows to range from the lower to middle 40s.
400 PM MST Tue Nov 30 2021 High pressure is expected to remain in place across the region into this weekend, with little change in day to day weather expected.
220 PM MST Tue Nov 30 2021 A warm front will continue pushing across the region for this afternoon. Have upgraded the High Wind Watch over to a High Wind Warning. For now, confidence just isn't there for how much mixing will take place over the lower elevations to justify headlines at this time. Wednesday will also feature record high temperatures with highs in the 60s to low 70s ahead of the next approaching cold front.
The highest waves will be north of Muskegon. -Patchy Fog Possible Tonight Sfc ridging moves in tonight and clears out much of the lingering low clouds. Will need to watch for the possibility of some patchy fog/freezing fog developing given the moist boundary layer conditions and elevated dew points from today's melting snow. The warm front pushes in from the west on Wednesday, with an accompanying chance of rain showers. If precip were to develop before Noon however there could be a brief period of light snow or mixed of rain and snow before temperatures warm up into the lower to mid 40s.
230 PM MST Tue Nov 30 2021 Unseasonably warm weather the next few days with strong mixing across the region as a dampened upper level ridge shifts across the area.
Temps will continue to fall a few more degrees overnight, especially in the east before an upper trough moves through Wednesday.
Model soundings and SREF probabilistic guidance continue to indicate the highest probability of dense fog development around and north of the I-10 corridor, though all inland terminals are expected to experienced reduced visibilities this evening. So along with warmer overnight lows, fog development should also expand a bit further north as well. Upper ridging that's been in place begins to flatten and edge further east late Wednesday night.
1236 AM EST Wed Dec 1 2021 High pressure will nose into the Ohio Valley leading to dry conditions tonight.
Passage of the upper trough axis and onset of isentropic downglide this afternoon will bring an end to any lingering precipitation by 00Z, with dry weather expected through the remainder of the short term.
1016 PM CST Tue Nov 30 2021 (This evening through Wednesday) Overall benign weather should continue through Wednesday afternoon as weak ridging will build in over Texas during this time. Given the aforementioned ridging, temperatures will be in the low to mid 70s, which is about ten degrees above normal for this time of year.
The sfc warm front will pass early in the afternoon with swly winds boosting temps into the upper 40s to middle 50s. Gehring (Issued 231 PM CST Tue Nov 30 2021) Tonight through Wednesday night: Breezy northwest winds will become lighter this evening as high pressure briefly builds in overhead. We have warmed up a bit more than anticipated today and this could impact how low temperatures get overnight so have adjusted them a few degrees warmer than the previous forecast. With the 925mb warm nose and southwest winds keeping temperatures a little warmer should see more rain than snow compared to the previous forecast.
High pressure builds in for the end of the work week.
Latest metars show temperatures ranging from the lower 30s across central Wisconsin to the upper 30s across southeast Minnesota/northeast Iowa. warmer air aloft advects into the forecast area and will allow precipitation to change over to all rain and precipitation should exit the eastern forecast area by 15z Today.
An area of low pressure is located in southeast Colorado. Elevated northeast winds behind the associated cold front this morning will usher in modest cool advection, trimming afternoon temperatures to the lower 60s. Winds will subside rapidly to light and variable this evening as weak high pressure settles in. As such, expecting temperatures to remain above normal through sunrise Wednesday, in the lower to mid 30s. One of the nicest days of the year expected again, with few clouds, light winds, and unseasonably warm afternoon temperatures in the lower 70s. Followed the warmer MAV guidance given its performance with yesterday's record warmth, and increased max temps several degrees.
Anticipate lows to dip into the teens over the higher elevations, but low to mid 20s will prevail over the Keweenaw Peninsula. However, the pattern will quickly shift by Wednesday morning as strong warm advection filters into the UP ahead of the next low pressure system currently tracking through Saskatchewan. Upper air pattern consists of a 500 mb trough in the ern U. In the extended, the GFS and ECMWF show a 500 mb trough off the Pacific NW coast, a trough in the lower Great Lakes 12z Sat. Differences show up 12z Tue with the Canadian and ECMWF showing a broad trough across all of the U. while the GFS has a stronger trough in the desert sw. NW gales will taper off this evening as high pressure strengthens over the region.
131 AM MST Wed Dec 1 2021 The Tri-State area will be under northwest flow aloft due to high pressure sitting along the West Coast through the short term period.
Cool and dry high pressure will slide eastward off the east coast in response to an upper trough which will swing by tonight. Some high clouds are expected ahead of the trough but for the most part skies will be mostly sunny.
236 AM CST Wed Dec 1 2021 Anomalous ridging with downslope flow will usher in well above average temperatures during the short term period.
Relatively tranquil conditions will continue today and tonight as a weakening northwesterly flow aloft prevails across the Western High Plains while a westerly downslope effect in the lower levels reinforces an expansive dry air mass across the region. Persistent downsloping will also pull warmer air into the area, pushing H85 temperatures above 12C in central Kansas to near 15C near and along the Colorado border. Expect highs up into the upper 60s(F) to possibly the lower/mid 70s(F) this afternoon. Look for temperatures not to be quite as cold tonight due to downsloping with lows ranging from the 30s(F) to the lower 40s(F).
221 AM CST Wed Dec 1 2021 A bit warmer morning across the area today with current readings in the mid 30s to low 40s.
300 AM EST Wed Dec 1 2021 Rain chances return late today with a crossing warm front.
Stratocu should continue to erode overnight as sfc ridging builds across the region, and wind backs to the W-SW.
1009 PM MST Tue Nov 30 2021 06Z TAF CYCLE Sct high clouds in gradually weakening nw-nly flow aloft over nrn NM as well as over portions of srn NM due to a weak upper low located off Baja CA. Weak lee trough developing by 01/18Z.
Dry air below 700 mb will likely prevent precip from reaching the ground initially this afternoon, then dry air aloft builds in this around midnight behind the trough axis and ends any precip potential.
High pressure builds in for the end of the work week. A high pressure system will provide dry weather tonight. Some models suggest that the higher elevations could see snow mix in at times Wednesday afternoon. An upper level trough sweeps through the area to open up the forecast period.
946 PM CST Tue Nov 30 2021 Surface map reflects a cool night with temperatures generally in the low to mid 50s and a light southeasterly wind.
(Today through Thursday afternoon) A weak cold front has moved into the Permian Basin.