Aikyam-Lab/Synoptic-Bench huggingface dataset:
345 PM CDT Tue May 5 2020 Cooler weather settles in for midweek with a chance for light showers tonight. Gusty northwest winds decrease this evening as the lower tropospheric low over Iowa advances quickly southeastward and the H850 jet max shifts away from the region. Modest convection has been noted over South Dakota in the region of DCVA preceding this low, with this kinematic forcing and mid-level moisture overspreading the region tonight. Cooler air filters southward behind this wave for Wednesday, with H850 temps falling from +6 to +1 C between today and Wednesday. The cooler lower tropospheric temp profiles embedded within the cyclonic flow pattern on Wednesday will result in diurnally- driven CU in the afternoon hours, some of which may be deep enough to support light rain showers.
/issued 906 AM EDT Tue May 5 2020/ Stable dry conditions under high pressure covering the area will support ample sunshine and another very warm and dry day across the entire forecast area.
Temperatures will dip into the 30s overnight, possibly into the low 30s across the west. An upper ridge builds from the west as it deamplifies and we get a slight warmup with highs in the 60s and mainly dry weather.
312 PM EDT Tue May 5 2020 Currently - A ridge stretching from the Atlantic into the Gulf of Mexico has been bifurcated by day time heating over South Florida. Forecast - A low pressure system over the southeastern United States will swing east then northeastward into the Atlantic and deepen tonight. As a result, the split ridge will remain split. The lower level ridge will also split off as troughing digs further southward. Interestingly, even though the surface through lower level ridge will become split, it will take awhile for the inhibiting inversion to dissipate and deep layered moisture to increase.
76 The upper low that is along the MT/SK border early this morning will drift SE across NE Montana today. The low will become an open trough as it moves through the forecast area. The system moves to the east this evening and high pressure moves in with clear skies and light winds tonight.
303 PM CDT Tue May 5 2020 The upper trough currently across the upper Midwest will very slowly drop south and east through the period, taking precipitation and cloud cover with it. Weak surface ridging (with northwest flow aloft) will work into the area for Wednesday night, with dry weather and mostly clear skies allow temperatures to fall back into the 30s across much of the area.
241 PM CDT Tue May 5 2020 Low pressure across the Midwest will continue to produce plenty of clouds and periods of light rain into this evening. A series of cold fronts will move through the region over the next several days keeping clouds in place and temperatures well below normal. near the trough, low clouds are anchored in place.
High pressure will shift east across the Great Basin through early Wednesday.
A change in the overall weather pattern will begin tomorrow when a strong cold front pushes through the region.
922 AM PDT Tue May 5 2020 High pressure centered over northern Baja will continue the warming trend with well above average high temperatures this week.
A warming trend will commence today as high pressure builds over the Desert Southwest, causing temperatures to rise well above normal from Wednesday through the weekend.
148 PM PDT Tue May 5 2020 High pressure centered over northern Baja will continue the warming trend with well above average high temperatures this week.
While a few light showers could develop from the passing trough across NE Panhandle this afternoon, much of this will be virga and evaporate before reaching the ground. With the trough passage to the east and higher pressure west, winds have been up in the 20-30 mph gust range along with dry conditions. Winds will decrease overnight and Wednesday with a pleasant day across the entire region as the main ridge axis shifts across WY/NE.
High pressure was helping to clear out the sky across the CWA.
158 PM CDT Tue May 5 2020 Overall, a quiet and cool day is ongoing across eastern Oklahoma and northwest Arkansas, on the heels of last night's cold frontal passage.
Radar and satellite imagery depict this low quite nicely. developing in bands that are wrapping around the low as it shifts southeast but also dissipating as it is fighting some subsidence. Precip should end across the forecast area in the early evening hours as the low finally exits the area.
335 PM CDT Tue May 5 2020 Stubborn cloud coverage has kept us from reaching our expected highs, keeping us on the cooler side of the guidance. Overnight low temperatures will be in the lower 40s, with clouds remaining partly cloudy along the Missouri River Valley to mostly cloudy in SW MN. Wednesday will likely start off fairly breezy, as the departing low and entering high pressure system keep the pressure gradient strong over the area.
As a weak low over Iowa moves southeast into the Ohio River Valley, an inverted trough extending north into the Red River Valley will bring isolated showers to Itasca, Cass, Crow Wing and possibly Aitkin counties. High pressure will continue through Wednesday with possible fire weather conditions in the afternoon.
/issued 630 AM CDT Tue May 5 2020/ The pressure gradient behind a cold front producing very gusty NE wind across the area. /issued 426 AM CDT Tue May 5 2020/ A strong cold front is currently blasting south through the southern Permian Basin west to near Guadalupe Pass. Much cooler and below normal temperatures are expected today and tonight behind the front as winds gradually diminish.
1242 PM CDT Tue May 5 2020 Expect northwest winds to increase this afternoon and be gusty at times as high pressure builds into the area. Winds will be out of the north for much of the forecast period after a cold front moves through the state.
618 PM CDT Tue May 5 2020 Low pressure across the Midwest will continue to produce plenty of clouds and periods of light rain into this evening. A series of cold fronts will move through the region over the next several days keeping clouds in place and temperatures well below normal. near the trough, low clouds are anchored in place.
A warming and drying trend will continue as high pressure builds over California resulting in well above average temperatures by late week.
The upper trough currently across the upper Midwest will very slowly drop south and east through the period, taking precipitation and cloud cover with it. Weak surface ridging (with northwest flow aloft) will work into the area for Wednesday night, with dry weather and mostly clear skies allow temperatures to fall back into the 30s across much of the area.
Look for a dry cold front pushing west to east across northern NV tomorrow. This will bring gusty winds, increased clouds and slightly cooler temperatures to areas north of I-80.
Surface ridging in place will undergo further strengthening this evening by stable aggregate lake scale processes. This will support high temps in the mid to upper 50s (cooler readings near Lake Huron).
High pressure will build in the Plains Wednesday and track south to the Gulf states overnight.
A cold front generally extends along the Natchez Trace corridor this afternoon, with high pressure building in behind. High pressure ridging and mainly clear skies will build in overnight, with lows mainly in the low to mid 50s. A nice day is on tap for Wednesday, under mostly sunny skies and highs in the low to mid 70s. This comes as the region remains under troughing aloft and high pressure at the surface.
/NEW/ /Through Wednesday Evening/ A line of showers and embedded showers developed along the cold front, observed by a contrast in dewpoints, late this afternoon across our southeastern zones. Radiational cooling should yield low temperatures in the low to mid 50s tonight, about 5 to 8 degrees below normal. By tomorrow afternoon and evening, high pressure will slide towards the east and winds will slowly become southeasterly, allowing for low-level moisture to slowly return overnight.
551 PM CDT Tue May 5 2020 Stubborn cloud coverage has kept us from reaching our expected highs, keeping us on the cooler side of the guidance. Overnight low temperatures will be in the lower 40s, with clouds remaining partly cloudy along the Missouri River Valley to mostly cloudy in SW MN. Wednesday will likely start off fairly breezy, as the departing low and entering high pressure system keep the pressure gradient strong over the area.
Onshore winds set to return Weds night as high pressure moves off to the east. 41 Winds will be shifting to the north this evening with the passage of the cold front. The next cold front is still on track to move into the marine waters Fri night/early Sat morning.
939 PM EDT Tue May 5 2020 Warm front near the NC/SC border and a low pressure system approaching from the Upstate leading to a severe weather threat this evening. The low pressure system will move off the coast late tonight and cooler and drier air will spread into the area through the mid week.
A cold front continues to push through the region this evening, likely crossing the spine of the Appalachians at this time. Behind the front, precipitation coverage has really fallen off with the exception of the weakly forced showers over the High Knob region in southwestern VA. Likewise, enhanced PGFs consequent of an approaching ridge on the heels of the front will favor continued nwly gusting of cold advective flow through the night before weakening for a brief period around sunrise. CDG Chattanooga Airport, TN 52 65 42 69 50 / 20 10 0 0 20 Knoxville McGhee Tyson Airport, TN 50 60 39 66 47 / 20 30 10 0 20 Oak Ridge, TN 49 60 39 67 47 / 20 20 10 0 30 Tri Cities Airport, TN 48 56 34 62 42 / 30 40 10 0 20.
838 PM EDT Tue May 5 2020 Clouds will thicken this evening ahead of a wave of low pressure approaching from the Ohio Valley. As the precipitation spreads slowly to the northeast overnight into Wednesday and colder air moves in aloft, the rain will likely mix with wet snow across the higher terrain of the Alleghenies.
Temperatures tomorrow will be cooler behind the front, much closer to normal for early May, but this will be short lived as ridging builds into the area and temperatures warm through the rest of the week and into the weekend. The thermal trough will develop along the coast during this time as well, and with offshore flow, the Chetco Effect will push temperatures in the Brookings area well into the 70s for much of the week.
926 PM EDT Tue May 5 2020 No meaningful changes to the forecast this evening, as high pressure retreats ahead of an approaching trough, which will move through the area during the day on Wednesday. Winds 10-15 kts just off of the surface should keep this low stratus from becoming patchy ground fog.
A reinforcing cold front appears on track to pass through around and just following sunrise. /issued 350 PM CDT Tue May 5 2020/ Drier air will settle over the Mid-South tonight in the wake of the cold front that moved through the area earlier today. Expect generally benign and cooler weather conditions across the region Wednesday. A weak wave moving across the Upper OH Valley will drive a reinforcing cold front into the area tomorrow.
/issued 255 PM CDT Tue May 5 2020/ The cold front has kept temps moderately cooler today with highs in the low/mid 70s. Temps will begin to warm tomorrow as upper ridging pushes closer to the region. A dome of high pressure persist over northwestern Mexico with a high amplitude ridge extending into northern Alberta and beyond.
But latest hi-res models continue to show more convective development later tonight as a weak mid level short wave trough approaches from the northwest. The models also suggest a weak mid level short wave trough will be approaching from the northwest overnight.
Surface cold front, along a KIER-KJAN-KTCL line at 02Z, will continue dropping south and out of the area later tonight. A cold front generally extends along the Natchez Trace corridor this afternoon, with high pressure building in behind. High pressure ridging and mainly clear skies will build in overnight, with lows mainly in the low to mid 50s. A nice day is on tap for Wednesday, under mostly sunny skies and highs in the low to mid 70s. This comes as the region remains under troughing aloft and high pressure at the surface.
Temps at 2 pm were generally around 70F across most of the plains with some upper 60s over the higher elevations of the plains. Valleys should see readings in the lower 30s with 20s mtns.
The northwest winds on Wed afternoon will precede a late season cold front that will pass the Keys on Wed night.
Moderate offshore flow will develop overnight in the wake of a cold front. A cold front continues to progress through the area at this hour. A cold front is pushing across the area this evening with winds turning northerly in its wake.
Cooler weather settles in for midweek with a chance for light showers tonight. Gusty northwest winds decrease this evening as the lower tropospheric low over Iowa advances quickly southeastward and the H850 jet max shifts away from the region. Modest convection has been noted over South Dakota in the region of DCVA preceding this low, with this kinematic forcing and mid-level moisture overspreading the region tonight. Cooler air filters southward behind this wave for Wednesday, with H850 temps falling from +6 to +1 C between today and Wednesday. The cooler lower tropospheric temp profiles embedded within the cyclonic flow pattern on Wednesday will result in diurnally- driven CU in the afternoon hours, some of which may be deep enough to support light rain showers.
/Issued 158 PM CDT Tue May 5 2020/ Overall, a quiet and cool day is ongoing across eastern Oklahoma and northwest Arkansas, on the heels of last night's cold frontal passage.
/issued 350 PM CDT Tue May 5 2020/ Drier air will settle over the Mid-South tonight in the wake of the cold front that moved through the area earlier today. Expect generally benign and cooler weather conditions across the region Wednesday. A weak wave moving across the Upper OH Valley will drive a reinforcing cold front into the area tomorrow.
651 PM CDT Tue May 5 2020 A cold front moving through the region will trigger showers and thunderstorms for southern TAF sites through this evening. Onshore winds set to return Weds night as high pressure moves off to the east. 41 Winds will be shifting to the north this evening with the passage of the cold front. The next cold front is still on track to move into the marine waters Fri night/early Sat morning.
733 PM EDT Tue May 5 2020 Warm front near the NC/SC border and a low pressure system approaching from the Upstate leading to a severe weather threat this evening. The low pressure system will move off the coast late tonight and cooler and drier air will spread into the area through the mid week.
558 PM EDT Tue May 5 2020 Cooler temperature and developing rain can be expected overnight with some snow mixing in toward morning for some areas. Favorable ascent with warm frontal interaction will continue to spawn rain tonight a broad low pressure digs over the Great Lakes and Ohio Valley Regions. Rain showers will continue on Wednesday as the low continues to slowly develop eastward. Better precipitation chances are indicated east of I 79 given trough-axis/ascent positioning.
735 PM CDT Tue May 5 2020 Low pressure across the Midwest will continue to produce plenty of clouds and periods of light rain into this evening. A series of cold fronts will move through the region over the next several days keeping clouds in place and temperatures well below normal. Latest water vapor imagery showing a well-defined curl in the southeast tip of iowa, within the broad upper trough swinging southeast into Illinois. near the trough, low clouds are anchored in place.
856 PM MDT Tue May 5 2020 Mid and high level clouds are increasing this evening ahead of the next low pressure system to impact the area on Wednesday.
For today s/w ridge starts building into the region from the west.
241 AM MDT Wed May 6 2020 High pressure has brought clear skies and light winds to NE Montana overnight. The high will move to the east today and an upper ridge will move through the forecast area with warmer temperatures. East to SE winds and cloud cover will increase during the day as a low pressure system approaches from the west.
The dry air mass will ridge into eastern Oklahoma today with light winds over most of central and western Oklahoma. Tonight, mid-level moisture is forecast to round the upper ridge over the western U.
Otherwise, peaks of sunshine will return this afternoon increasing temperatures back to the low 60s.
400 AM CDT Wed May 6 2020 Upper level ridge over the High Plains will try to shift east a little then southeast tonight and Thu. Ahead of the short wave, some low to mid level moisture moves in today as seen with a 700mb theta-e ridge. Another short wave will rotate across Ontario and send a cold front south across the Great Lakes with the cold air back dooring the area late Thu night. Drier and cooler air will move in from the north and northeast late tonight and Thu. As the mean upper flow persists with deep troughing in the east and ridging to the west, NNW flow aloft develops bringing several clippers to the region.
A cold front continues to push through the region this evening, likely crossing the spine of the Appalachians at this time. Behind the front, precipitation coverage has really fallen off with the exception of the weakly forced showers over the High Knob region in southwestern VA. Likewise, enhanced PGFs consequent of an approaching ridge on the heels of the front will favor continued nwly gusting of cold advective flow through the night before weakening for a brief period around sunrise. Chattanooga Airport, TN 65 42 69 50 63 / 20 0 0 20 90 Knoxville McGhee Tyson Airport, TN 60 39 66 47 61 / 60 10 0 20 90 Oak Ridge, TN 60 39 67 47 61 / 60 10 0 30 90 Tri Cities Airport, TN 56 34 62 42 58 / 60 10 0 20 100.
This is due to the deep trough residing over the Great Lakes region and a sharp high amplitude ridge set up over the Intermountain West and the northern Rockies.
1057 PM PDT Tue May 5 2020 A strong cold front will arrive overnight with widespread rain developing into Wednesday morning.
Today, the surface and 850 mb ridge will move to the east-southeast, bringing warmer southeast winds by afternoon. This, in addition to sunny skies and strengthening of the 850 mb thermal ridge, should bring warmer highs today into the mid 80s. Tonight, the surface and 850 mb ridge will move further to the southeast, resulting in warmer south flow and increasing moisture. This will create warmer lows tonight into the upper 50s to mid 60s, as well as perhaps some low cloud development.
Evening surface analysis shows a sprawling area of high pressure across the interior CONUS. To our south, the cold front which passed last night stretches along a line from a 1007 mb low near Charlotte, NC to Lafayette, LA to Laredo, TX. Temperatures and dewpoints are much cooler tonight. Wednesday will be warmer, but will be very near climatological normals for early May. Highs should be in the lower 80s for most locations, under mostly sunny to partly cloudy skies. Winds will be light, initially from the northeast, but should veer out of the southeast later in the evening as the ridge axis moves east.
919 PM PDT Tue May 5 2020 High pressure centered over northern Baja will keep inland areas hot much of this week, while a weak sea breeze moderates coastal areas.
After that, a trough and cold front will come from the NNW with an area of MVFR cigs and sct -SHRA across Middle Tn.
High pressure aloft will shift east due to a weather disturbance moving across the Northern Rockies Wednesday.
251 AM EDT Wed May 6 2020 Low pressure system will move off the coast late tonight and cooler and drier air will spread into the area through the mid week.
At the surface, high pressure ridge has begun to shift to the east of the forecast area with winds having veered to the southeast. South to southeast low level flow will begin to increase this evening in response the development of a lee trough toward the Pecos River valley in New Mexico.
This will support high temps in the mid to upper 50s (cooler readings near Lake Huron).
134 AM EDT Wed May 6 2020 A cold front will move into the area from the west tonight, then push off the coast Wednesday morning.
Better precipitation chances are indicated east of I 79 given trough- axis/ascent positioning.
Showers are the result of a strong upper low that is swinging to the southeast from the Midwest region. With the relatively strong lift, drizzle will also be possible this morning as the low moves to the southeast, and chances for light showers/drizzle will continue on the Plateau this afternoon.
A mid/upper level trough will dig into the region today then will quickly shift off to our east tonight. Some showers will move through especially northern/central areas this morning/early afternoon as the trough moves in. As the colder air pushes in today the higher elevations may see the rain showers mix with or change to snow showers this afternoon before the precipitation ends early this evening.
Good fescue growing weather will continue today with highs reaching the low to mid 60s. For tonight, look for chilly conditions with overnight lows falling into the lower 40s.
Otherwise a quiet night with light winds expected with the high pressure pattern in place. Temperatures will dip into the 30s overnight, possibly into the low 30s across the west. An upper ridge builds from the west as it deamplifies and we get a slight warmup with highs in the 60s and mainly dry weather.
1036 PM CDT Tue May 5 2020 Stubborn cloud coverage has kept us from reaching our expected highs, keeping us on the cooler side of the guidance. Overnight low temperatures will be in the lower 40s, with clouds remaining partly cloudy along the Missouri River Valley to mostly cloudy in SW MN. Wednesday will likely start off fairly breezy, as the departing low and entering high pressure system keep the pressure gradient strong over the area.
245 AM CDT Wed May 6 2020 A quiet and pleasant day is in store, with light winds under surface ridging conditions. Expect highs ranging from the upper 60s across far northwest Arkansas to the lower/mid 70s elsewhere.
923 PM PDT Tue May 5 2020 A strong cold front will arrive overnight with widespread rain developing into Wednesday morning.
945 PM PDT Tue May 5 2020 A strong cold front will arrive overnight with widespread rain developing into Wednesday morning.
A cold front draped across the Southeast will continue to slide through the area this evening and through the overnight hours. The cold front will quickly surge south over the Gulf waters overnight, leaving cooler and drier conditions in its wake. Moderate offshore flow will develop overnight in the wake of a cold front. A cold front continues to progress through the area at this hour. A cold front is pushing across the area this evening with winds turning northerly in its wake.
/issued 250 PM CDT Tue May 5 2020/ (Tonight and Wednesday) As high pressure and cooler air builds over the area, winds will diminish this evening. Lows tonight will be much cooler than those usual, for early May. For Wednesday, surface winds, from the south, will return to West Central Texas, and that will signal the start of another warm-up; nevertheless, highs will be much cooler than those of the last several days and very near those more usual for this time of year.
305 AM CDT Wed May 6 2020 A very weak lobe vorticity rotating around the trough across the Great Lakes was triggering isolated sprinkles across east central NE early this morning. Otherwise it's a quiet day with northerly winds at 10-15 mph, scattered to broken clouds, and highs in the lower to mid 60s. The next trough which is currently moving into the Pacific Northwest will move into the northern Rockies tonight.