Aikyam-Lab/Synoptic-Bench huggingface dataset:
A strong and very cold high pressure system is currently progged to move into the Central Mississippi Valley today and into Monday. Cloud cover could also wreak havoc with temperatures as several short range models do indicate some moisture transport in the low to mid levels from the northwest. This low level moisture could produce more cloud cover than currently expected.
514 AM EST Sun Jan 19 2020 Another mild January morning is underway across the Florida Keys with temps in the lower to mid 70s and dew points in the mid to upper 60s. The high pressure center that was responsible for quite the wind surge yesterday is now located near Bermuda and continues to translate rapidly eastward. Surface flow will continue to collapse around the Keys today as we enter a col region ahead of the next approaching cold front.
High pressure will build across the region today with sunny skies and highs reaching near 75 degrees across the lower deserts.
643 AM EST Sun Jan 19 2020 High pressure will slowly build into the area through mid week.
309 AM CST Sun Jan 19 2020 Canadian high pressure will bring bitter cold temperatures to the region through the short term portion of the forecast. As the high pressure builds in today, the breezy northwesterly winds over the northeastern CWA will subside with blowing snow ending. With the high pressure over the region tonight, along with light winds, lows should drop into the teens below zero most locations. Southerly winds developing on Monday will bring slightly warmer temperatures into the area with highs in the single digits and low teens above zero. To start the period a strong ridge of high pressure at the mid- levels should exit over the region. This ridge will be somewhat short-lived as energy flows off the Pacific and into the Rockies, after which it should start to dig toward the southeast.
/issued 311 AM CST Sun Jan 19 2020/ Tranquil weather is expected the next couple of days due to an upper ridge over the western U. This ridge will dampen as a jet max moves into southern California bringing an upper trough along the U.
55 High pressure, clear skies, and VFR conditions will continue through tonight. Today Through Monday Night An upper trough is over the Great Lakes and Appalachians with an upper ridge over the west coast. The trough will move to the east coast today as the ridge moves into the Rockies. High pressure and subsidence will continue over Arkansas through the short term period. Highs will be cooler today in the upper 30s to lower 50s, and then lower 30s to mid 40s for Monday.
101 PM MST Sun Jan 19 2020 Northwesterly flow aloft continues over the forecast area as an upper ridge builds to the west. At the surface, high pressure remains over much of the Dakotas. On Monday the upper ridge will slide across the northern plains with WAA continuing.
1212 PM EST Sun Jan 19 2020 [Through 1800z Monday] Cold front will move across TAF sites during 20z-22z period this afternoon, shifting winds to NW. This is expected to decrease in coverage as it spreads southward with the cold front, but could lead to a few hours of MVFR CIGs after front passes a TAF site before clearing occurs. Latest guidance suggests this will continue through the morning, while a cold front moves SE across SE GA. High pressure northwest of the waters will bring elevated northwest winds on Monday over the area waters.
Otherwise, upper-ridge to support mostly clear skies through the afternoon. Cool and breezy N/NE winds will prevail today as temperatures gradually recover into the lower to mid 50s for afternoon highs with ample sunshine expected. An even colder night will follow tonight as winds will decouple and temperatures fall off quickly to near or below the freezing mark by early Monday morning as high pressure dominates. This will result in temperatures likely running a few degrees cooler compared to today as highs will only reach the upper 40s over our northern zones with lower to mid 50s farther south as mostly sunny skies prevail once again.
1230 PM EST Sun Jan 19 2020 Dry air will filter into the region tonight with dry and progressively cooler conditions expected through early to mid week as cold Canadian air continues to filter into the region.
328 PM EST Sun Jan 19 2020 Persistent cloudiness associated with earlier confluence between Cuba and the Florida Keys, a significant inversion (for the Keys) just below 10,000 feet and a very weak warm advection veering wind profile has maintained isolated to scattered showers to the south of the Lower Keys. Indications that this local feature will erode this evening with the approach of an upper trough and attendant significant cold front.
Colder and drier air moves into the area behind it as high pressure builds.
Through the day, cold advection will battle full sun, so we will probably only gain a few degrees from our current temperatures, with northern sections peaking in the mid 30s to southern sections in the lower/mid 40s. Drier air behind the front will help to clear the skies out today and we'll get a chance to see the sun again, but it won't help warm temperatures up too much with daytime highs expected to eek near or just above freezing across the Eastern Tennessee Valley.
227 PM EST Sun Jan 19 2020 We'll see some lingering clouds and snow showers mainly across the higher terrain tonight as low pressure exits into the Canadian Maritimes. Cold high pressure will then gradually build in for the first part of the week. Warmer weather looks likely mid to late week. along with a few snow showers mainly in upslope flow across the higher terrain. a mostly sunny day behind the last of the departing impulses as high pressure builds in from the west. At this time, the latest deterministic guidance and ensemble information consensus calls for a much quieter week this week as deep layer ridging prevails. This fair weather trend has the potential to continue through much of the upcoming weekend, but models diverge on the track of a closed low and attendant sensible weather.
Things likely start to change later Monday as strong high pressure nudges eastward and trends our low level flow more anticyclonic, with clearing expected by Monday night as the high drifts just south of the local area.
Anglin Southwesterly breezes will spread warmer air across North- Central Montana today. However, locations east of Chester are likely to remain cold for one more day, with a warmer change coming on Monday. Temperatures should go above freezing in this area on Sunday, but it will take some time after temperatures go above freezing for the ice jam to break up. No flooding has developed from these ice jams as of now, but with temperatures below freezing, the ice jam potential will continue for the next several days. /ISSUED 440 AM MST Sun Jan 19 2020/ Clouds are thinning over the area this morning as an upper level ridge strengthens over the Pacific Northwest. Temperatures will continue to climb above freezing today, spreading from west to east across North-central Montana.
228 PM EST Sun Jan 19 2020 Dry air will filter into the region tonight with dry and progressively cooler conditions expected through early to mid week as cold Canadian air continues to filter into the region.
Flurries and isolated snow showers will decrease across the Central Ridge and Valley region. An upper level trough will swing through the northeast CONUS early in the upcoming week, then high pressure will settle over the region for the second half of the week.
Clear skies and plenty of sunshine, but temperatures in the low 30s with winds gusting 20-25 mph are going to make for a brisk day. VFR as dry high pressure continues to push into the area with gusty NW winds.
High pressure aloft will strengthen as it moves east across the Great Basin through early Monday.
255 PM CST Sun Jan 19 2020 Another cool and calm night is in store across West Texas and southeast New Mexico, albeit a few degrees warmer than last night due to mid-level clouds developing around 03-06Z.
Canadian high pressure will bring bitter cold temperatures to the region through the short term portion of the forecast. As the high pressure builds in today, the breezy northwesterly winds over the northeastern CWA will subside with blowing snow ending. With the high pressure over the region tonight, along with light winds, lows should drop into the teens below zero most locations. Southerly winds developing on Monday will bring slightly warmer temperatures into the area with highs in the single digits and low teens above zero. To start the period a strong ridge of high pressure at the mid- levels should exist over the region. This ridge will be somewhat short-lived as energy flows off the Pacific and into the Rockies, after which it should start to dig toward the southeast.
Light winds will persist in the vicinity of the high pressure and will allow for another morning of cool temperatures.
With the morning starting out warmer due to a mid level cloud deck, would not be suprised if highs exceed the forecast by a little bit this afternoon. Temperatures and wind chills of 5 to 15 degrees below zero over Southwest Phillips County were relatively warmer than expected, therefore, the Wind Chill Advisory was cancelled early. The arctic airmass that is nestled at the surface will gradually mix out and allow for temperatures to warm as an upper level ridge builds over Montana on Monday. With that weak trough arriving a few days from now, it may be worth monitoring. Towards the end of the week, another ridge builds into the Western US, continuing the seasonably warmer, mild, and dry weather.
Quiet weather across the Tennessee Valley region this morning as high pressure builds into the area in wake of the passage of an arctic front. With the cold start to the day, and continued CAA through the day Monday, highs will only warm into the upper 30s and wind chills will generally only rise into the lower 20s Monday afternoon. Another cold night is on tap for Monday night, as temperatures drop quickly and fall into the lower 20s. Meanwhile, a strong closed low will move southward and through the TN Valley Monday night, with its center moving directly overhead. The atmosphere will be moisture starved, with the arctic airmass firmly in place, however the strength of the lift associated with the closed low may be enough to overcome the dry airmass and lend flurries across the TN Valley.
Temperatures in the low to mid 30s with a 20-25 mph breeze is creating feels-like temperatures in the mid 20s.
347 PM EST Sun Jan 19 2020 High pressure will slowly build into the area through mid week.
High pressure will slowly build into the area through mid week.
Northwest flow aloft will continue as 500 mb ridge moves east from Great Basin tonight, crossing Rockies Monday afternoon. Low temperatures tonight mainly in the lower- to mid-20s. Light southwest winds expected over most sections on Monday as lee trof over eastern Colorado/New Mexico takes shape. Exception will be northeast part of the forecast area, as weak backdoor cold front holds highs close to 50.
Temperatures will be a few degrees warmer than yesterday due to more sunshine and slight ridging/warming aloft. The building ridge of high pressure, currently over the Great Basin this morning, will continue to strengthen today while slowly migrating east over the full stretch of the Rockies. With a lack of the mid and upper level Pacific moisture streaming around the top of the ridge today, more sunshine is expected as skies are expected to be mostly sunny across much of the region. For Monday, high amplitude ridge builds over Colorado with dry and warming airmass along with weak flow aloft.
If conditions trend cooler, then cannot rule out an issuance in future updates.
At 1 pm, temperatures across West Central Texas were in the upper 40s to low 50s, and highs in the low to mid 50s can be expected this afternoon. Some mid and high level moisture moving in will result in partly cloudy skies tonight, which should help keep temperatures from getting as cold as this morning (forecast lows tonight are in the low 30s).
With the ridging building in today most afternoon highs will be a bit warmer than yesterday, except for most valleys and basins where lingering cold air will remain trapped under the usual inversions. Highs will remain below freezing in the basins, except the Big Horn Basin will manage to reach 40 in some areas as there is a lack of snow cover there. The Cody Foothills could also reach the low 50s Monday as well.
The trough that brought the rainfall to the area yesterday morning continues to pull off to the east with quasi-zonal flow in its wake. Farther west, a strong ridge continues to build poleward through Alberta and into Saskatchewan but the next feature of interest has crested this ridge and will be diving southeast through tomorrow. In the meantime, expect mostly clear skies tonight with overnight lows ranging from the mid teens to the lower 20s across most of the area. A reinforcing cold front will move through the area tonight and will keep temperatures tomorrow on the cold side. Many areas will see afternoon highs in the low/mid 30s tomorrow.
SHORT TERM (Tonight through Monday Night): 500 mb ridging will build steadily eastward throughout the short term period while the surface ridging also shifts eastwards. This will allow for temps to moderate steadily as the low level wind flow becomes more E-NE throughout tomorrow night. However, believe that generally partly to mostly cloudy skies will prevail generally as the low level flow maintains some moisture flow in off of the Gulf of Mex.
1116 AM CST Sun Jan 19 2020 Latest water vapor satellite imagery shows upper level trough over the Great Lakes Region with northwest flow aloft over the Northern Plains.
Warmer air starts to move into our region Monday. Currently, Arctic high pressure building southeast across the Dakotas, resulting in a mostly sunny sky across western and central North Dakota and frigid temperatures in the single digits above or below. High pressure continues to build southeast through the night, ending up centered in northeast SD/southeast ND by 12Z Monday. 'Warmer' west and north central (still below zero) where return flow develops in the wake of high pressure. Plenty of sunshine tomorrow with highs from the low 30s southwest to the single digits above east.
Monday will be a little warmer with highs from the upper teens N to the low 30s S.
Snow showers and snow flurries are gradually building south along the cold front as winds will shift to the north northwest and boundary layer winds shift more to the north.
1227 PM EST Sun Jan 19 2020 Low pressure near Nova Scotia will continue moving away into the Canadian Maritimes today as high pressure builds into the central states. Deep layered weakly cyclonic flow will persist today as energy continues to rotate through the upper level longwave trough. Moisture remains and with energy coming through the upper trough this afternoon skies will be mostly cloudy NW of NYC, with chance of a few flurries inland. Heights begin to rise early this evening as the trough weakens and the parent low moves well to the northeast, and ridging builds to the west. The 500mb trough will remain as an Alberta clipper rotates through the Central states.
1005 AM CST Sun Jan 19 2020 A strong ridge over the western CONUS and corresponding trough over the east will maintain below normal temperatures across the Mid-South the next few days. Cold air advection will continue through the period as arctic high pressure builds across the region. Arctic high pressure will continue to slide south toward the Mid-South. Lows will be in the lower to mid 20s with wind chills in the teens by morning.
The extra sunshine and overall weaker cold advection should allow us to squeeze out a few extra degrees closer to freezing for highs.
140 PM MST Sun Jan 19 2020 Latest satellite and upper air analysis show a ridge over the Rockies with dry northwest flow onto the Plains. A backdoor cold front was near Highway 83. Tonight lows should be a few degrees warmer than last night east of the cold front due to weak WAA/moisture advection occurring. Monday light winds will continue as a ridge at 850mb moves over the forecast area. During the afternoon the backdoor cold front will advance further west into the forecast area, close to Highway 25, in response to the closed low moving south over the Missouri River Valley. Due to dry air in place, and the short wave ridge moving overhead, little if any cloud cover is expected along the front. Monday night the cold front will continue advancing west until midnight to roughly the CO/KS border.
229 PM EST Sun Jan 19 2020 Cold temperatures and scattered to numerous snow showers will continue into early Monday with a reinforcing cold front.
/issued 932 AM CST Sun Jan 19 2020/ Cloud cover across southern portions of the forecast area continue to thin out as upper level trough continues to slide to the east and the entire forecast area should see sunshine during the afternoon. Temperature falls thus far have been a little slower than expected, with readings still a good 10 degrees or so warmer than forecast lows. Increasing clouds can be expected starting TUE night ahead of an upper trof approaching from the west, with warmer temperatures and increasing SFC MSTR following suit on WED as return flow becomes established.
Backdoor cold front will continue pushing through the area with northerly winds this afternoon becoming light/variable overnight into Monday morning.
130 PM EST Sun Jan 19 2020 Low pressure south of Nova Scotia will continue moving away as high pressure builds from the Central states. The high will slowly settle over the region by mid week. Deep layered weakly cyclonic flow persists today as energy continues to rotate through the upper level longwave trough. With winds staying up most of tonight, sided with slightly higher of the MOS guidance lows tonight, from the mid teens inland to the lower 20s along the coast and in the metro area.
832 AM PST Sun Jan 19 2020 High pressure aloft and offshore flow at the surface will bring a warm day today.
Through the day, cold advection will battle full sun, so we will probably only gain a few degrees from our current temperatures, with northern sections peaking in the mid 30s to southern sections in the lower/mid 40s.
1017 AM EST Sun Jan 19 2020 Mostly sunny skies were observed over most of the Florida Keys save boughts of stratocumulus over portions of the Lower Keys, aided by a weak warm advection pattern occasionally saturating the lower troposphere beneath a 4. Temperatures were a bit a warmer than same time yesterday, entering the upper 70s with dewpoints in the 65-68F range.
1036 AM EST Sun Jan 19 2020 Low pressure near Nova Scotia will continue moving away into the Canadian Maritimes today as high pressure builds into the central states. Deep layered weakly cyclonic flow will persist today as energy continues to rotate through the upper level longwave trough. Moisture remains and with energy coming through the upper trough this afternoon skies will be mostly cloudy NW of NYC, with chance of a few flurries inland. Heights begin to rise early this evening as the trough weakens and the parent low moves well to the northeast, and ridging builds to the west. The 500mb trough will remain as an Alberta clipper rotates through the Central states.
1214 PM CST Sun Jan 19 2020 Breezy northwest winds continue this morning on the backside of a deep low pressure system that has migrated into the Great Lakes. Have sided with cooler guidance values today with deep fresh snow cover across the region, but have sided closer to mean values where clouds will influence warming.
/issued 1005 AM CST Sun Jan 19 2020/ A strong ridge over the western CONUS and corresponding trough over the east will maintain below normal temperatures across the Mid-South the next few days. Cold air advection will continue through the period as arctic high pressure builds across the region. Arctic high pressure will continue to slide south toward the Mid-South. Lows will be in the lower to mid 20s with wind chills in the teens by morning.
1115 AM MST Sun Jan 19 2020 A ridge aloft will build over the Great Basin today keeping the forecast area under northwest flow. Recent satellite imagery shows an expansive cirrus shield in the ridge to our west. The 700 mb temperatures would suggest that highs may be a few degrees warmer than yesterday, but the cloud cover could off set that. The ridge progresses over the area tomorrow, which should cause temperatures to warm a little closer to normal.
As the mid/upper level trough to our north today drops southward, 850 mb winds will shift from NW to N and a surge of colder air will arrive across our northern sections. The rest of Monday should have decreasing clouds but cold temperatures, with most of the Valley only having highs in the lower to mid 30s.
A building upper ridge will provide the area with mostly clear skies today.
932 AM CST Sun Jan 19 2020 Cloud cover across southern portions of the forecast area continue to thin out as upper level trough continues to slide to the east and the entire forecast area should see sunshine during the afternoon. Temperature falls thus far have been a little slower than expected, with readings still a good 10 degrees or so warmer than forecast lows. Increasing clouds can be expected starting TUE night ahead of an upper trof approaching from the west, with warmer temperatures and increasing SFC MSTR following suit on WED as return flow becomes established.
Clear skies and plenty of sunshine, but temperatures in the low 30s with winds gusting 20-25 mph are going to make for a brisk day.
203 PM CST Sun Jan 19 2020 A very cold and expansive area of high pressure continues its grip on the central plains today as brisk northerly winds sustain near 10 mph.
VFR conditions expected to continue as cold front progresses over the region this afternoon and early evening. For the next few days a large-scale upper trough will be to the east and an upper ridge to the west.
A tight pressure gradient between departing low pressure and high pressure approaching will keep gusty north to northwest winds in place over Lake Michigan today. Arctic air over the area and the brisk winds will cause heavy freezing spray for the south two thirds of the lake through mid day.
The upper level trough axis will continue to move over the region tonight shifting off to the east late. Snow showers will continue to diminish this evening and cloud cover will decrease especially late as the low level flow shifts more to the north as ridging builds as the surface and heights begin to rise aloft.
High pressure has settled in over the region today, and will remain the dominant feature tonight and Monday before sliding southeast of the region Monday night. Monday night will see us situated between the exiting high and an approaching low pressure trough, with southerly winds in the 10 to 15 mph range. With the very cold start to the day and the high settling in overhead, will see temperatures fall into the single digits below zero west of the Missouri River, to the teens below zero elsewhere. Temperatures will rebound some on Monday, but only into the single digits across the east and central, and in the lower teens west river. The 500mb ridge currently over the western states will be set up from TX through the Dakotas and central Canada to start off the period.
Mid/hi cloud will increase thru the ridge Mon. /issued 255 PM CST Sun Jan 19 2020/ Another cool and calm night is in store across West Texas and southeast New Mexico, albeit a few degrees warmer than last night due to mid-level clouds developing around 03-06Z.
947 PM EST Sun Jan 19 2020 An upper level trough will swing through the northeast CONUS early in the upcoming week. High pressure will then settle over the region for the second half of the week bringing perhaps the coldest air of the season.
CDG Chattanooga Airport, TN 21 37 23 40 22 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 20 34 21 37 20 / 0 0 0 0 0 Oak Ridge, TN 19 35 21 37 20 / 0 0 0 0 0 Tri Cities Airport, TN 17 32 19 35 18 / 10 10 0 0 0.