Aikyam-Lab/Synoptic-Bench huggingface dataset:
323 PM CST Tue Nov 17 2020 Cooler temperatures filtered into the region today, while skies cleared out providing mostly sunny skies. Temperatures will begin to increase each day through the end of the week, as High pressure drifts to the eastern coast and then into the coastal Atlantic waters. This will also bring about breezy conditions each day, ushering the warmer dry conditions back across the eastern US. The cold front that slipped through the region overnight has pushed well south of the region. This has allowed High pressure to begin knocking on the doorstep. High pressure will slide quickly to the east coast, and then into the coastal waters of the Atlantic Wednesday.
931 PM EST Tue Nov 17 2020 High pressure will provide dry conditions for the rest of the week. Return southerly flow on the back side of the high will bring a warm up late in the week, and a chance of rain will increase late in the weekend as a cold front moves into the Ohio Valley. H5 flow regime still keeps the Ohio Valley under the influence of a troughing pattern for Wednesday.
Slight onshore (NNE) flow has kept temps much milder along the Treasure coast in the lower 70s. Since winds will remain 5-10 mph overnight, temps will not fall to their dewpoints but min temps will reach the low to mid 50s across the interior, including all the way down to Okeechobee county. Strong high pressure over IL/IN this evening will push east across the Appalachians. A tightening NE pressure gradient around this high pressure will produce windy conditions across EC FL.
Meanwhile dry conditions look to continue over a general ridge pattern.
Cold front moves across Nevada late tonight and Wednesday, bringing some rain to northern Nevada with the snow level near 7000 feet.
Winds are also increasing this afternoon with current gusts up to 30 to 45 mph in the foothills and mountains, locally higher at the higher peaks. Significant snowfall is forecast across the higher mountain elevations later today into Wednesday with several feet of accumulation expected near the higher northern Sierra passes and across the peaks.
/issued 304 PM CST Tue Nov 17 2020/ Pleasant conditions continue as high pressure building in from the Great Lakes region slides towards the Tennessee Valley and Mid- Atlantic coast.
High pressure was over the mid- Mississippi Valley at this time. Temperatures will be a little warmer than today with highs mainly in the 60s.
304 PM MST Tue Nov 17 2020 Per previous discussions, the mid-level ridge axis has pushed over the High Plains earlier in the day and flow aloft has shifted to the southwest. The ridge was driven east of the area by an eastward propagating long wave trough over the eastern Pacific. Ahead of the trough, cirrus was moving across the Great Basin and will be passing overhead later in the day. As the Pacific trough methodically moves eastward on Wednesday southwesterly upper level flow will increase bringing modest breeziness Wednesday afternoon. Models continued to indicate the Pacific trough will fill and much of the energy and moisture will be spread across the northern Rockies Wednesday night.
934 PM EST Tue Nov 17 2020 A cold front will move offshore this evening. High pressure will build into the region from the Ohio Valley Wednesday, then will become centered over the Carolinas through the end of the week and over the weekend.
711 PM EST Tue Nov 17 2020 High pressure will build over the mid Atlantic coast tonight and Wednesday with clear skies and dry comfortable conditions across west central and southwest Florida.
In response to the lee trough crossing the area tonight, 3-4mb/3hr pressure falls develop from northwestern into north central SD. While the low level inversion will be strong enough to prevent the strong winds from mixing to the surface over most of the area, the wave effect developed by the southwesterly winds aloft crossing the Black Hills is expected to mix the high winds to the surface over the northern/central/WY Black Hills and adjacent foothills. Temperatures will be 15-30F warmer than average, especially on the plains of southwestern and south central South Dakota, where windy conditions and low relative humidity will push the grassland fire danger index into the very high to extreme categories on Wednesday.
High pressure continues to dominate the weather pattern with above normal temperatures and dry conditions. For Wednesday, the pattern will begin to shift with an upper level ridge sliding through the region and the flow becoming zonal.
226 PM MST Tue Nov 17 2020 Continued dry and pleasant weather expected this evening and for most the night as the ridge begins to slide to the east. The most likely area of concern will be the lower elevations of Natrona county. A jet streak moving through the upper-level trough will continue to bring increased chances of PoP to the far western mountains.
220 PM MST Tue Nov 17 2020 Early afternoon GOES WV/IR showed a upper ridge axis from eastern MT to the southern High Plains. Waves of mid and high clouds were spreading west to east well in advance of a eastern Pacific upper trough and cold front.
The first cold front will make its way through the Northern Rockies later this afternoon and evening.
801 PM EST Tue Nov 17 2020 Snow showers will continue to plague the region tonight with some additional accumulation along and north of Interstate 80 and in the ridges. Northwest flow continues in the low levels, but cold advection will essentially become nil over the next few hours. An additional 1 to 2 inches is expected in this area, with up to another inch possible on the higher ridges in upslope flow. Chilly overnight lows in the mid and upper 20s are forecast, with some teens in the higher elevations. Remaining snow shower activity will come to an end Wednesday morning as ridging moves in from te west. Dry conditions and warmer temperatures will then prevail the remainder of the week with high pressure in control.
555 PM CST Tue Nov 17 2020 Cooler temperatures filtered into the region today, while skies cleared out providing mostly sunny skies. Temperatures will begin to increase each day through the end of the week, as High pressure drifts to the eastern coast and then into the coastal Atlantic waters. This will also bring about breezy conditions each day, ushering the warmer dry conditions back across the eastern US. The cold front that slipped through the region overnight has pushed well south of the region. This has allowed High pressure to begin knocking on the doorstep. High pressure will slide quickly to the east coast, and then into the coastal waters of the Atlantic Wednesday.
High pressure dominates Wednesday onward, with a warming trend. Minor adjustments to the lingering POPs that should be relegated to the highest terrain overnight. Moisture behind the cold front continues streaming from the Great Lakes producing light rain/snow mix showers across portions of the lowlands, while it is all snow over our northeast mountains. With this cold advection, temperatures will plummet into the mid 20s, and even lower at some spots across the lowlands, while the higher elevations could drop down to the upper teens tonight. With gusty winds gradually diminishing through early Wednesday morning, the higher elevations could see some single digits wind chills this evening through early Wednesday morning.
940 PM EST Tue Nov 17 2020 Cold high pressure will build across the area through mid-week, then warmer weather will develop late week. Strong Canadian high pressure, centered over the Tn Valley, will build east towards the region overnight. Dry, cold air advection will drive temperatures down into the low to mid 30s, with a few areas near the NC/VA border flirting with the upper 20s. Freeze Watch for Cumberland, Wayne and Sampson Counties Wednesday Cold, Canadian high pressure will build over central NC through Wednesday night. Winds will be light during the day, but will still create wind chills ranging from the low 40s in the NE to the upper 40s in the SW.
716 PM EST Tue Nov 17 2020 A cold front will track to the coast tonight. This front will lead in colder air and high pressure.
Also, given such low dewpoints in place and the likelihood that many locales in the north will decouple beneath clear skies and incoming high pressure, lowered overnight lows across the north as well. Clear skies are expected, and winds will be light as high pressure moves into the region. CD Chattanooga Airport, TN 32 57 36 62 39 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 28 53 32 61 36 / 0 0 0 0 0 Oak Ridge, TN 29 53 33 60 37 / 0 0 0 0 0 Tri Cities Airport, TN 24 49 26 61 33 / 0 0 0 0 0.
304 PM CST Tue Nov 17 2020 Pleasant conditions continue as high pressure building in from the Great Lakes region slides towards the Tennessee Valley and Mid- Atlantic coast.
325 PM MST Tue Nov 17 2020 Early afternoon GOES WV/IR showed a upper ridge axis from eastern MT to the southern High Plains. Waves of mid and high clouds were spreading west to east well in advance of a eastern Pacific upper trough and cold front.
637 PM EST Tue Nov 17 2020 A cold front will move offshore this evening. High pressure will build into the region from the Ohio Valley Wednesday, then will become centered over the Carolinas through the end of the week and over the weekend.
431 PM MST Tue Nov 17 2020 Per previous discussions, the mid-level ridge axis has pushed over the High Plains earlier in the day and flow aloft has shifted to the southwest. The ridge was driven east of the area by an eastward propagating long wave trough over the eastern Pacific. Ahead of the trough, cirrus was moving across the Great Basin and will be passing overhead later in the day. As the Pacific trough methodically moves eastward on Wednesday southwesterly upper level flow will increase bringing modest breeziness Wednesday afternoon. Models continued to indicate the Pacific trough will fill and much of the energy and moisture will be spread across the northern Rockies Wednesday night.
/issued 131 PM CST Tue Nov 17 2020/ An upper level ridge over the Rocky Mountains today will track eastward through the week.
Temperatures will trend warmer over the next several days with continued dry conditions. High pressure was over the mid- Mississippi Valley at this time. Temperatures will be a little warmer than today with highs mainly in the 60s.
A cold front which progressed through the TN Valley earlier today will continue to push southward through the evening. The post-frontal modified Canadian airmass will move from the Midwest into the Ohio Valley overnight, bringing in dew points down to the low 20s overnight. For now, with forecast winds of 5 mph, there is high confidence in the entire TN Valley reaching at or below freezing.
A strong late fall upper level ridge will dominate the western Plains and Rockies through the middle part of the week.
645 PM EST Tue Nov 17 2020 High pressure will provide dry conditions for the rest of the week. Return southerly flow on the back side of the high will bring a warm up late in the week, and a chance of rain will increase late in the weekend as a cold front moves into the Ohio Valley. H5 flow regime still keeps the Ohio Valley under the influence of a troughing pattern for Wednesday.
Sunny skies continue this afternoon for the area with high pressure over East Texas that will slowly drift east into MS Wednesday.
Even with a bit of a light northeasterly breeze, lows should have no problem dropping into the lower 40's to even a few upper 30's in traditionally colder locations across the northshore and southern MS.
Low pressure system that brought strong south and southeasterly winds to central OR and the Blues will continue its eastward trek the next few days. The cold front associated with this system will pass over the CWA this afternoon into the evening, with light rain expected for a brief period. As the front passes, strong winds will decrease below warning and advisory thresholds, however expect to remain breezy for the next few days as the trough continues to exert its influence over the PacNW. Better chances for precip Wednesday as trough axis passes over our area, this time aided with more favorable moist SW flow aloft. Highs tomorrow in the low 50s and upper 40s, as cooling trend proceeds with the passage of oncoming trough.
545 PM EST Tue Nov 17 2020 A cold front will move offshore this evening. High pressure will build into the region from the Ohio Valley Wednesday, then will become centered over the Carolinas through the end of the week and over the weekend.
541 PM CST Tue Nov 17 2020 Stronger south to southwest boundary layer/surface flow will develop across central/eastern Kansas to the east of the deepening lee side trof on Wednesday. Wind speeds will flirt with or exceed advisory criteria over much of the area, with the highest confidence along/either side of the Kansas turnpike corridor.
Chilly Canadian high pressure will settle into the region tonight.
432 PM MST Tue Nov 17 2020 Continued dry and pleasant weather expected this evening and for most the night as the ridge begins to slide to the east. The most likely area of concern will be the lower elevations of Natrona county. A jet streak moving through the upper-level trough will continue to bring increased chances of PoP to the far western mountains.
/NEW/ /Through Wednesday Night/ Another clear and cool night is in store as we remain under the influence of an upper level ridge. Overnight lows will again fall into the 30s and 40s, but will generally be a few degrees warmer than previous nights. Otherwise, another warm fall day is expected with high temperatures topping out in the low to mid 70s.
435 PM MST Tue Nov 17 2020 Early afternoon GOES WV/IR showed a upper ridge axis from eastern MT to the southern High Plains. Waves of mid and high clouds were spreading west to east well in advance of a eastern Pacific upper trough and cold front.
Winds will continue to diminish from west to east across the area as a cold front moves to our east. A second cold front will bring widespread rain, MVFR ceilings and visibility, and gusty south-southwest winds from west to east late tonight and Wednesday morning.
At present, the data suggests that the low clouds will remain out near the TX/NM state line. Overnight lows will be in the low 40s, with highs on Wednesday in the low to mid 70s.
A cold front passage this evening will result in cooler and closer to near normal temperatures toward the end of the week.
1257 AM EST Wed Nov 18 2020 Scattered snow showers and flurries will continue to plague the region through the morning hours, with some additional accumulation along and north of Interstate 80 and in the ridges. Dry conditions and warmer temperatures will prevail for the remainder of the week with high pressure in control.
(Today and tonight) South winds will continue to increase today as western trough takes shape and pressure falls occur across the high Plains.
958 PM CST Tue Nov 17 2020 The near term forecast remains in good condition this evening, as dry northwest flow aloft will continue between a longwave trough lifting northeastward off the Mid-Atlantic coast and a mid-level subtropical ridge centered over the Lower Rio Grande Valley. At the surface, the center of a large ridge of high pressure is predicted to shift slowly east-southeastward across KY, resulting in calm to occasionally light NE flow overnight. Although not indicated in the current weather grids, conditions may also become favorable for the development of brief/patchy river valley fog between 8-13Z, some of which could occur as Freezing Fog in a few of the colder valleys across northeast AL/southern TN.
Also, given such low dewpoints in place and the likelihood that many locales in the north will decouple beneath clear skies and incoming high pressure, lowered overnight lows across the north as well. VFR conditions through the period as high pressure will be in control. SR Chattanooga Airport, TN 57 36 62 39 67 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 53 32 61 36 66 / 0 0 0 0 0 Oak Ridge, TN 53 33 60 37 65 / 0 0 0 0 0 Tri Cities Airport, TN 49 26 61 33 64 / 0 0 0 0 0.
As high pressure moves further east, light E/SE winds will be developing across the CWA tomorrow afternoon.
Winds will remain from the southeast at 5-10 mph with 15 mph gusts today, but even with sunny skies and a southern breeze, temperatures will only make it to the low to mid 50s for most. Temperatures will fall to the low to mid 30s over the eastern half of our CWA and to the mid 30s to near 40 over the western half of the CWA as warm air tries advecting up the Mississippi Valley into the Ohio Valley.
VFR conditions for this TAF cycle as high pressure dominates the region.
400 AM EST Wed Nov 18 2020 Lake stratus will migrate further east this morning, eventually exiting across the international border as an upper level trough with strong jet winds is forced toward the North Atlantic. Eastern periphery of an amplified ridge over north-central CONUS will make inroads across the Great Lakes today as the distinct anticyclone tracks southeast into Ohio Valley. Even with periods of decent solar insolation, highs will struggle to get beyond the low 40s today, partly because of the chilly start with 08Z readings in the low-mid 20s.
Warmer temperatures will be the main message for today and tomorrow. some deterministic solutions near 60 for the southern valley but will keep the cooler solution with increased cirrus expected. A trough moves across the Devils Lake basin in the late afternoon, with winds beginning a shift to westerly flow.
Ample moisture over the area associated with the upper low spinning off the coast is evident on current satellite imagery.
948 PM CST Tue Nov 17 2020 Lowered temperatures a few degrees for tonight in the lower valley areas of southeast Oklahoma and in the FYV area where temperatures have dropped off fairly quickly given the dry air- mass in place/light winds.
(Today and tonight) Sunny and breezy today as the surface pressure gradient tightens in response to lee side troughing beneath the upper level zonal flow. With the low clouds returning tonight, lows temperatures should only fall into the lower 50s.
152 AM EST Wed Nov 18 2020 Upslope snow showers and gusty surface winds come to an end this morning as dominating high pressure progresses into the area. Webcams at Snowshoe display at least flurries still reaching the higher ridgetops in the forecast area, but any additional accumulations will be slim to none overnight. Guidance remains on track with one last resurgence of snow showers, squeezing out lingering low level moisture hugging the higher terrain ahead of developing high pressure from the west. By daybreak, snow showers and stratocumulus streaming into our northern zones will come to a conclusion as warm air intrudes and high pressure claims stake over the eastern US.
312 AM EST Wed Nov 18 2020 High pressure will build into the region from the Ohio Valley today, then will become centered over the Carolinas through the end of the week and over the weekend.
1031 PM MST Tue Nov 17 2020 Continued dry and pleasant weather expected this evening and for most the night as the ridge begins to slide to the east. The most likely area of concern will be the lower elevations of Natrona county. A jet streak moving through the upper-level trough will continue to bring increased chances of PoP to the far western mountains.
1254 AM EST Wed Nov 18 2020 High pressure will provide dry conditions for the rest of the week. Return southerly flow on the back side of the high will bring a warm up late in the week, and a chance of rain will increase late in the weekend as a cold front moves into the Ohio Valley. H5 flow regime still keeps the Ohio Valley under the influence of a troughing pattern for Wednesday.
Highs today will range from the middle 40s over south central Lower Michigan to the lower 50s over west central Indiana.
/Issued 948 PM CST Tue Nov 17 2020/ Lowered temperatures a few degrees for tonight in the lower valley areas of southeast Oklahoma and in the FYV area where temperatures have dropped off fairly quickly given the dry air- mass in place/light winds.
1154 PM CST Tue Nov 17 2020 High pressure to the northeast continues to ridge down into the region tonight. /issued 526 PM CST Tue Nov 17 2020/ Clear skies and light winds overnight as dry high pressure will remain in control. /issued 304 PM CST Tue Nov 17 2020/ Pleasant conditions continue as high pressure building in from the Great Lakes region slides towards the Tennessee Valley and Mid- Atlantic coast.
359 AM EST Wed Nov 18 2020 Scattered snow showers and flurries will continue across the north and ridges through the morning hours. Warmer air aloft will slowly makes its way across Ohio this morning, and then work eastward across the rest of the region during the afternoon. These warmer temperatures will work to erode cloud cover from SW to NE. Dry conditions and warmer temperatures will prevail for the remainder of the week with high pressure in control.
1241 AM EST Wed Nov 18 2020 Snow showers will continue to plague the region through the morning hours, with some additional accumulation along and north of Interstate 80 and in the ridges. Dry conditions and warmer temperatures will prevail for the remainder of the week with high pressure in control.
210 AM EST Wed Nov 18 2020 Cold high pressure will build across the area through mid-week, then warmer weather will develop late week. Strong Canadian high pressure, centered over the Tn Valley, will build east towards the region overnight. Dry, cold air advection will drive temperatures down into the low to mid 30s, with a few areas near the NC/VA border flirting with the upper 20s. Freeze Watch for Cumberland, Wayne and Sampson Counties Wednesday Cold, Canadian high pressure will build over central NC through Wednesday night. Winds will be light during the day, but will still create wind chills ranging from the low 40s in the NE to the upper 40s in the SW.
The near term forecast remains in good condition this evening, as dry northwest flow aloft will continue between a longwave trough lifting northeastward off the Mid-Atlantic coast and a mid-level subtropical ridge centered over the Lower Rio Grande Valley. At the surface, the center of a large ridge of high pressure is predicted to shift slowly east-southeastward across KY, resulting in calm to occasionally light NE flow overnight. Although not indicated in the current weather grids, conditions may also become favorable for the development of brief/patchy river valley fog between 8-13Z, some of which could occur as Freezing Fog in a few of the colder valleys across northeast AL/southern TN.
1028 PM MST Tue Nov 17 2020 Per previous discussions, the mid-level ridge axis has pushed over the High Plains earlier in the day and flow aloft has shifted to the southwest. The ridge was driven east of the area by an eastward propagating long wave trough over the eastern Pacific. Ahead of the trough, cirrus was moving across the Great Basin and will be passing overhead later in the day. As the Pacific trough methodically moves eastward on Wednesday southwesterly upper level flow will increase bringing modest breeziness Wednesday afternoon. Models continued to indicate the Pacific trough will fill and much of the energy and moisture will be spread across the northern Rockies Wednesday night.
904 PM CST Tue Nov 17 2020 (Issued 900 PM CST Tue Nov 17 2020) Light winds are expected to gradually become southerly late tonight into Wednesday morning as high pressure south of the area continues to slowly move southeast over the Ohio River Valley. Ritzman (Issued 255 PM CST Tue Nov 17 2020) Tonight through Wednesday night: Gusty northwesterly winds will continue to die down this evening as high pressure slides off to our southeast. As this high pressure exits tomorrow, a steeper pressure gradient will lean over into the western Great Lakes Region, leading to some gusty south winds. Winds will be strong, but will carry the upside of moderating temperatures, which will reach into the lower 50s to upper 40s.