Aikyam-Lab/Synoptic-Bench huggingface dataset:
In addition, the mixing should allow for warm conditions through this afternoon with highs in the 60s to 70s across the lower elevations. Critical Fire weather conditions may return for southeast Broad upper trof moves through the northern U. on Wednesday sending a back door cold front into the southeast plains during the day. Ahead of the cold front, breezy westerly winds will spread down from the higher elevations into southern portions of the I-25 corridor with the potential for critical fire weather conditions to return. Models differ with how much lower levels saturate, with NAM suggesting potential for some freezing drizzle/light snow across northern sections of the southeast plains, while GFS is quite a bit drier.
Saturation of the low levels should occur at some point in the next few hours. Impacts include: strong south winds, snowfall, possibly blowing snow, and possible sleet/freezing rain. The core of the low level jet will be located along the Red River Valley late morning into the afternoon hours. Lastly, an upper jet and vort max rotating around the upper low to the north may bring showery precip to the region this afternoon. The occurrence and coverage of this precip is uncertain, but the p-type would be sleet/freezing rain. A strong cold front will be gradually pushing southward across the region during the day on Wednesday. The main impact associated with this cold frontal passage will be blustery conditions through Wednesday evening.
A deep layer dry northwesterly flow pattern aloft prevails across our region early this morning in the wake of a deep upper level trough axis approaching the Eastern Seaboard.
940 AM CST Tue Jan 30 2018 Main initial focus is on the warm frontal band of flurries/light snow that is expected to move through WI this afternoon/early evening. Forecast Confidence is High High pressure will shift ewd for the afternoon with brisk sly winds and warm advection beginning. Strong WAA on a swly 65 kt LLJ will occur tnt as strong low pressure moves ewd across srn Canada.
Chattanooga Airport, TN 42 24 54 37 / 0 0 0 10 Knoxville McGhee Tyson Airport, TN 39 20 51 35 / 0 0 0 10 Oak Ridge, TN 39 20 52 36 / 0 0 0 10 Tri Cities Airport, TN 35 17 49 32 / 20 0 0 10 TN.
Coldest Night of the Week Expected Tonight Though No Freezing. Northwest flow on the backside of yesterday's front continues to draw down considerably cooler and drier air down the peninsula. Low-level winds will start off northwest today, but as high pressure builds toward the southeast, the flow will veer slightly onshore (N/NNE) by this evening. It will feel quite a bit cooler today given the gusty north winds, and temps will struggle to break into the 60s. The coldest night of the week though no freezing temperatures are expected. In fact, there will be a better chance for Atlc stratocu to come ashore the Treasure coast and min temps may hold in the low to mid 50s especially Martin coast.
Soundings saturate with a trough passage. Wednesday will continue to see favorable mixing though with slightly cooler mid level temperatures.
This will keep temperatures from warming much above the observed low temps, with highs in the lower 40s.
501 AM CST Tue Jan 30 2018 Surface ridging centered over the Mississippi Valley region early this morning will slide southeast today. The true Arctic cold front will quickly swing south over the area Wednesday night with strong low-level cold advection/gusty winds in its wake and possibly a few flurries/snow showers.
503 AM CST Tue Jan 30 2018 An axis of high pressure, centered just west of the Mississippi River early this morning, will edge eastward across the state today. Some higher clouds will spread in later today, associated with a warm front, but dry conditions will prevail. With the warm front, lows should occur early in the evening, with gusty southerly winds keeping temperatures fairly steady much of the night.
256 AM PST Tue Jan 30 2018 High pressure aloft will weaken for today and Wednesday as the lower level flow goes from weakly offshore to weakly onshore.
405 AM CST Tue Jan 30 2018 Deep long wave trough is currently digging south across the southeastern US while moving east. This will keep temperatures from warming much today and max out in the low to mid 50s which is about 10 degrees below normal. The trough will quickly shift east and offshore tonight.
Breezy northerly winds will develop late this morning through the afternoon making it feel a little cooler than the predicted highs in the 60s.
The warm front continues to near from the southwest. No changes were made to the high temperature yet today. Soundings saturate with a trough passage. Wednesday will continue to see favorable mixing though with slightly cooler mid level temperatures.
Holes in the higher clouds have allowed a stronger radiative inversion to develop overnight across portions of the Central Valley resulting in patches of shallow dense fog (the fog is expected to diminish by late-morning). Current temperatures are running around 2-5 degrees cooler across most of the area compared to 24 hours ago.
/17/ Today through Tonight: Latest rap and satellite imagery showed a mid to upper level trough centered over the Great Lakes to the Southeast US. In the wake of the cold front lighter winds will be expected with minimum humidity around 30 percent. Highs today will be from the upper 40s north to the lower 50s south. Lows tonight will be from the upper 20s to the lower 30s.
223 AM PST Tue Jan 30 2018 Another round of Lake Tahoe freezing fog and stratus is occurring this morning. Otherwise, an upper level ridge off the west coast will keep conditions mostly dry with above average temperatures and generally light winds for the upcoming week. The freezing fog and stratus has returned to Lake Tahoe again this morning. Above average temperatures melting our meager snowpack coupled with light winds and relatively clear skies are allowing for freezing fog formation. Sierra ridges will experience moderate gusts around 60 mph today with moderate turbulence expected for aviation interests. Models are beginning to show a slightly more westward placement of the upper ridge by mid week.
Warm front lifting across eastern Montana this morning although partially masked by shallow inversion. Cold front will dip into the state this afternoon. This front will be the focus for a little light snow on Wednesday before being pushed west toward the mountains by Canadian high pressure pushing into the northern plains. Arctic high pressure behind the snow will also bring very cold temperatures for the weekend. Strong low-level wind shear is likely to be experienced at all sites ahead of and even for a time behind the front during the morning hours until the low level inversion is mixed out.
320 AM MST Tue Jan 30 2018 A cold front associated with a strengthening low pressure system tracking east across the Canadian Prairies will sweep across the region this morning, brining strong winds followed by somewhat cooler but still above average temperatures this afternoon. A cooler airmass from Canada begins to work south into the region late Wednesday with cooler conditions continuing into the weekend.
The building ridge over the eastern Pacific combined with energy diving down the southwest flank of a well wrapped cyclone over Ontario will bring a shift to northwesterly flow on Wednesday. The Polar Jet will just brush the northern Colorado mountains driving a cold front across northeast Utah and northwest Colorado.
A Canadian high will build south to the lower Miss Valley this afternoon and across the Carolinas tonight providing an unseasonably cool northerly flow to the area. Winds drop off across the inland areas tonight with near freezing temps and frost but coastal areas will be 5 to 10 degrees warmer due to a NNE breeze off the warmer waters. High pressure weakens and moves offshore during mid to late week with no headlines expected.
528 AM CST Tue Jan 30 2018 Northwesterly flow aloft continues overhead as we remain between ridging over the Rockies and troughing across the eastern states. At the surface, a high pressure ridge axis continues to move east of the forecast area allowing southerly return flow.
513 AM CST Tue Jan 30 2018 High pressure over NE TX will bring VFR conditions to area TAF sites today. Surface ridging stretching from Michigan into Texas early this morning will slide east through the day, allowing light northerly winds during the day to gradually become southerly by tonight. Moisture return associated with this flow will help keep lows tonight a few degrees warmer than this morning with most locations falling into the mid 30s to mid 40s under mostly clear to partly cloudy skies.
516 AM CST Tue Jan 30 2018 VFR conditions will prevail over the next 24 hours with high pressure over the region. With high pressure continuing to build across the region today, visibility should remain nearly ideal for moon gazers. Wednesday is also shaping up to be a rather pleasant day although with the high shifting off to the east and winds turning back out of the southeast, low level moisture will be a bit higher likely leading to a bit more in the way of cloud cover.
High pressure aloft over the Great Basin will weaken ahead of a series of weather disturbance racing east across the northern Rockies midweek. A dry cold front will cross the area tonight into Wednesday. High pressure aloft will strengthen along the west coast beginning late in the week.
430 AM MST Tue Jan 30 2018 Updated Aviation Discussion A cold front associated with a strengthening low pressure system tracking east across the Canadian Prairies will sweep across the region this morning, bringing strong winds followed by somewhat cooler but still above average temperatures this afternoon. A cooler airmass from Canada begins to work south into the region late Wednesday with cooler conditions continuing into the weekend.
Winds will gradually veer around to the southeast today with high pressure shifting eastward through this afternoon, generally ranging between 5-10 kts through much of the period.
Temperatures are in the lower 60s. In the low levels of the atmosphere, a large area of high pressure over the Tennessee Valley will build southeastward down the Florida peninsula this afternoon. In the mid to upper levels of the atmosphere, a trough of low pressure will be located over the Florida peninsula today.
629 AM EST Tue Jan 30 2018 A weak low pressure system in eastern Pennsylvania will bring the area a period of light snow through early afternoon. In general, snowfall will range from 1 to 3 inches with the highest amounts in the central southern tier and Finger Lakes region. A weak area of low pressure resides over eastern Pennsylvania with an inverted trough back through central New York. Elsewhere highs will range in the lower to middle 20s under brisk flow this afternoon. Any lingering lake effect snow showers southeast of Lake Ontario will end by midnight due to surface ridging. A slow moving storm system will pull a cold front across NY and PA during the short term period.
High pressure at the surface was providing mostly clear skies and light winds, leading to seasonably cold conditions early this morning. As the high moves east, the surface pressure gradient will strengthen ahead of a low pressure system moving across southern Canada and its trailing cold front reaching south into the central plains. Tonight, high level clouds will likely continue to stream over the area while the low level south to southwest flow is maintained and even strengthened ahead of the approaching dry cold front, which models have reaching into eastern Iowa toward 12z.
/issued 329 AM CST Tue Jan 30 2018/ Canadian high pressure will continue to settle over the Mid South today with continued dry conditions along with below normal temperatures. The high pressure will shift east tonight with low level southerly flow returning by Wednesday with much warmer temperatures in the middle to upper 50s anticipated.
High pressure will continue to build, keeping breezy conditions across the area, with no rain showers forecast through the day.
903 AM EST Tue Jan 30 2018 A weak low pressure system in eastern Pennsylvania will bring the area a period of light snow through early afternoon. In general, snowfall will range from 1 to 3 inches with the highest amounts in the central southern tier and Finger Lakes region. A weak area of low pressure resides over eastern Pennsylvania with an inverted trough back through central New York. Elsewhere highs will range in the lower to middle 20s under brisk flow this afternoon. Any lingering lake effect snow showers southeast of Lake Ontario will end by midnight due to surface ridging. A slow moving storm system will pull a cold front across NY and PA during the short term period.
Although the overall PWs are still nearly the same the LL appear much drier and once we start to mix out dewpoints could drop into the lower 20s and possibly upper teens. Deep long wave trough is currently digging south across the southeastern US while moving east. This will keep temperatures from warming much today and max out in the low to mid 50s which is about 10 degrees below normal. The trough will quickly shift east and offshore tonight.
Strong cold air advection on the back side of a short wave trof has kept winds in the 5-15 mph range overnight. The coldest readings will be across the northeast counties which will be closer to the high center.
Winds have been gusty overnight due to a cold front moving through the region.
404 AM CST Tue Jan 30 2018 Today through Tonight: Latest rap and satellite imagery showed a mid to upper level trough centered over the Great Lakes to the Southeast US. In the wake of the cold front lighter winds will be expected with minimum humidity around 30 percent. Highs today will be from the upper 40s north to the lower 50s south. Lows tonight will be from the upper 20s to the lower 30s.
Some of the high resolution guidance shows that shallow, thin fog could be a possibility, but agree that the mixing that the front will cause should preclude any fog concerns for the morning commute. A weak ridge is building in the area; thus, everywhere else should see skies generally become less cloudy. But this ridge will persist and allow temperatures to warm up again, and highs could reach into the upper 50s to mid 60s by the weekend.
446 AM CST Tue Jan 30 2018 A breezy to windy day is in store across the region, as a tightening pressure gradient ahead of an approaching trough and front. With still quite a bit of snowpack across the forecast area, especially in far southeast SD, northwest Iowa, and parts of southwest Minnesota, temperatures will peak near or just above freezing. Further west, mid 30s to lower 40s are expected, however south central SD could soar as warm as the lower 50s. Winds will turn west northwest behind the front, however the mixy environment will help keep temperatures seasonally quite mild overnight in the mid 20s to lower 30s - which is warmer than the typical high temps this time of year.
325 AM MST Tue Jan 30 2018 A cold front associated with a strengthening low pressure system tracking east across the Canadian Prairies will sweep across the region this morning, bringing strong winds followed by somewhat cooler but still above average temperatures this afternoon. A cooler airmass from Canada begins to work south into the region late Wednesday with cooler conditions continuing into the weekend.
On Wednesday, a warm front will pass north of the area and may trigger some light snow over some parts of the Finger Lakes and Tug Hill. Could see a couple inches along the higher terrain in Onondaga, Cayuga, and Cortland counties. A slow moving storm system will pull a cold front across NY and PA during the short term period.
308 PM EST Tue Jan 30 2018 High pressure will build across the Ohio valley and lower Great Lakes this evening. Overnight the high will move to the Carolinas as low pressure moves into Ontario driving a warm front northeast across the area. A cold front will follow Wednesday night.
301 PM EST Tue Jan 30 2018 Windy conditions will prevail in the wake of a cold front today across central NC. Arctic high pressure will build across the Carolinas through the middle of the week leading to dry conditions. Continental high pressure is moving into the area with cold air advection continuing on the front side of the high. High pressure will move across the region on Wednesday and in the process switch from a cold to weak warm air advection regime. Low temps Wednesday night right around or slightly below the freezing mark.
Clouds will continue their exodus early this morning as a chilly high pressure system builds south into the mid MS River Valley. Most locations will top out in the lower to mid 50s. The next weather system in the form of a cold front will push slowly southeast toward the OH River later Wednesday night.
Breezy conditions today as a weak cold front is moving through the area. We will continue with a chance of showers for some of the lower elevations, but any precip will be light and most likely accompany the front. Even behind the cold front, tonight's lows will be still be 5-10 degrees above normal, as will Wednesday's highs. An upper level high pressure ridge centered off the west coast will keep southeast Oregon and southwest Idaho under northwest flow aloft.
1247 PM EST Tue Jan 30 2018 Windy conditions will prevail in the wake of a cold front today across central NC. Arctic high pressure will build across the Carolinas through the middle of the week leading to dry conditions. Temperatures are above freezing everywhere now with the exception of the immediate triad where a coating of snow has kept temps down this morning. - Ellis The main story of the day will be the blustery conditions that will develop almost immediately behind the cold frontal passage, driven by strong cold air advection, and an associated well-mixed boundary layer up to around 850 mb after sunrise, resulting in frequent NWLY wind gusts of 22 to 28 kts, and a few up to 35 kts.
Looking for daytime highs to reach into the mid 40s north up to the lower 50s south.
Chattanooga Airport, TN 42 24 54 37 / 0 0 0 10 Knoxville McGhee Tyson Airport, TN 39 20 51 35 / 0 0 0 10 Oak Ridge, TN 39 20 52 36 / 0 0 0 10 Tri Cities Airport, TN 35 17 49 32 / 20 0 0 10.
145 PM PST Tue Jan 30 2018 High pressure aloft will bring warm, dry weather through the weekend.
1046 AM CST Tue Jan 30 2018 Bumped up snow probabilities into the likely/categorical range across north central WI for later this after noon with incoming warm frontal forcing. A secondary warm front pushes through the area tonight for the likelihood of another 1/2 to 1 inch of snow across mainly Clark/Taylor counties in north central WI. Surface ridging centered over the Mississippi Valley region early this morning will slide southeast today. The true Arctic cold front will quickly swing south over the area Wednesday night with strong low-level cold advection/gusty winds in its wake and possibly a few flurries/snow showers.
Have trimmed the High Wind warning out from much of Converse county into eastern Platte county where the strong wind threat appears to have pretty much ended. A cold front will sag south across the CWA this evening and will end the remaining high winds. A few snow showers possible mainly up north overnight into Weds as well as over the higher mtns but not much pcpn expected. Cooler across the CWA Weds will lighter winds over the plains but still gusty around the mtns.
320 PM CST Tue Jan 30 2018 Even with enhanced mixing and warmer southerly surface winds of 15 to 30 mph, temperatures have been tempered by a thick cirrus deck overhead this afternoon. This again could lead to a small chance of light snow or flurries near the Buffalo Ridge as there appears to be enough saturation in the dendritic layer.
326 PM EST Tue Jan 30 2018 A ridge of high pressure will pass through the area tonight and Wednesday morning.
North central Idaho will also see snow accumulations, with the area of greatest accumulation to occur over Clearwater County, and along the Highway 12 Corridor of Idaho County through Wednesday.
1120 AM CST Tue Jan 30 2018 A breezy to windy day is in store across the region, as a tightening pressure gradient ahead of an approaching trough and front. With still quite a bit of snowpack across the forecast area, especially in far southeast SD, northwest Iowa, and parts of southwest Minnesota, temperatures will peak near or just above freezing. Further west, mid 30s to lower 40s are expected, however south central SD could soar as warm as the lower 50s. Winds will turn west northwest behind the front, however the mixy environment will help keep temperatures seasonally quite mild overnight in the mid 20s to lower 30s - which is warmer than the typical high temps this time of year.
Another brief period of mixed wintry precipitation is possible tomorrow morning as the first cold front comes through. Main initial focus is on the warm frontal band of flurries/light snow that is expected to move through WI this afternoon/early evening. Forecast Confidence is High High pressure will shift ewd for the afternoon with brisk sly winds and warm advection beginning. Strong WAA on a swly 65 kt LLJ will occur tnt as strong low pressure moves ewd across srn Canada.
1253 PM EST Tue Jan 30 2018 High pressure, building over the region, is bringing breezy conditions to South Florida. High pressure will continue to build, keeping breezy conditions across the area, with no rain showers forecast through the day.
The ridge is moving quickly eastward and that should allow for more of a southerly component to develop at least across our western 2/3rds for this afternoon which should allow temps to rebound and reach our forecast max temps for the day. Winds will gradually veer around to the southeast today with high pressure shifting eastward through this afternoon, generally ranging between 5-10 kts through much of the period.
239 PM MST Tue Jan 30 2018 A passing cold front has brought gusty winds followed by cooler, yet still above average temperatures across the area. The next, stronger arctic cold front will dive south out of southern Canada during the day on Wednesday, followed by much colder air to follow, as well as light snow chances.
The upper-level pattern will be transitioning to a more zonal regime overnight, with high pressure settling in overhead at the surface.
Temperatures have rebounded, but still cooler than previously expected, with highs in the mid 50s to low 60s.
1126 AM CST Tue Jan 30 2018 Bumped up snow probabilities into the likely/categorical range across north central WI for later this after noon with incoming warm frontal forcing. A secondary warm front pushes through the area tonight for the likelihood of another 1/2 to 1 inch of snow across mainly Clark/Taylor counties in north central WI. Surface ridging centered over the Mississippi Valley region early this morning will slide southeast today. The true Arctic cold front will quickly swing south over the area Wednesday night with strong low-level cold advection/gusty winds in its wake and possibly a few flurries/snow showers.
Lows will be near freezing across the MS coast and inland areas and mid to upper 30s across the southshore. Once the sun comes up the southeasterly winds will mix at the surface and help to warm the region into the low to mid 60s for highs, which is near normal.
Otherwise, temperatures wont move much today as a weak cold front swings across the area. KLG A cold front associated with a strengthening low pressure system tracking east across the Canadian Prairies will sweep across the region this morning, bringing strong winds followed by somewhat cooler but still above average temperatures this afternoon. A cooler airmass from Canada begins to work south into the region late Wednesday with cooler conditions continuing into the weekend. Gusts in excess of 50kts possible at many N-central MT terminals this morning as well as over ridgetops in SW MT with LLWS possible in valleys.
226 PM EST Tue Jan 30 2018 Breezy southwest winds will bring milder temperatures and mostly cloudy skies to the region later tonight into Wednesday, with highs generally in the low to mid 40s tomorrow.