Aikyam-Lab/Synoptic-Bench huggingface dataset:
845 PM EST Tue Jan 7 2020 A dry cold front was pushing south into central Florida this evening, with clear skies across the area. Temperatures will fall into the mid 30s across the interior, with the low to mid 40s towards the coast. Weak cold front will move southeast of the region this evening. High pressure will build from the west Tonight, yielding mainly clear skies and temperatures falling into the 30s away from the coast.
807 PM EST Tue Jan 7 2020 A weak low moving east from the Lower Ohio Valley to the Delmarva Coast this evening will bring brief heavy snow bands to central and south central Pennsylvania this afternoon and early evening.
221 PM MST Tue Jan 7 2020 Current surface map shows 1030mb high building into the eastern Dakotas, with cold front backing into western South Dakota. A few light snow showers/flurries continue along the low level baroclinic zone over western South Dakota. Upper level ridge builds across the Northern Plains tonight/early Wednesday.
645 PM EST Tue Jan 7 2020 Low pressure will move farther northeast of the forecast area this evening and winds will diminish.
332 AM EST Wed Jan 8 2020 Cold front moving across the state will keep dry and cool conditions today. A high pressure ridge will begin to build from the southeast later today, which will result in a significant increase in temperatures compared to what we have seen the past few days.
By Thursday another low pressure system over the Front Range begins to exert its influence on the bi- state region and will be the focus of our end of week and weekend weather.
High pressure moving over the area will bring dry and tranquil conditions for Wednesday night and Thursday.
The net result is weaker winds, cooler highs, and a lower fire danger.
Lows tonight, may still dip just below the freezing mark, at some locations; but, numbers mainly in the lower to mid 30s look most likely.
The upper level ridge over Utah is shifting east of the area this evening ahead of a trough currently crossing the PacNW and NorCal. Expect the flow aloft to turn more southwesterly over Utah and increase tonight ahead of this trough. The approaching trough will cross Utah tomorrow. Given the fast-moving nature of this trough, this round of precipitation will likely be relatively brief.
As the low level flow swings around to the east coupled with building heights, a warming trend will commence after another cool morning Thursday. Highs Thursday will be in the lower to mid 70s with lows Thursday night only in the mid to upper 50s.
A northwesterly flow aloft will persist tonight as a bit of ridging occurs across the southern Plains. The ridging will start to flatten out tomorrow as a broad trof starts to take form across the western half of the country, as the next big storm system starts to dig southward along the west coast. At the surface, high pressure will continue to build into the region tonight from TX, and will slide off to the east tomorrow.
1035 PM MST Tue Jan 7 2020 Current surface map shows 1030mb high building into the eastern Dakotas, with cold front backing into western South Dakota. A few light snow showers/flurries continue along the low level baroclinic zone over western South Dakota. Upper level ridge builds across the Northern Plains tonight/early Wednesday.
241 AM CST Wed Jan 8 2020 Water vapor imagery shows the next system pushing into the west coast with ridging over the Rockies.
Overview: Warmer than normal temperatures through Thursday.
High pressure builds into the area bringing clear skies and colder air. Strong warm air advection will develop Wednesday night as low pressure ejects out of the Central Plains towards the Upper Mississippi Valley. With ongoing moisture advection Wednesday night, forecast soundings show the low levels moistening up fairly well by Thursday morning. Bulk of precip still expected to develop near and east of the Mississippi River, stretching back along the cold front into northeast Iowa. All this would suggest a decent chance for a period of light freezing rain/drizzle after daybreak, perhaps mixed with a bit of snow. While potential ice amounts continue to be on the low side (<0.
Latest 06Z surface analysis has a weak cold front slowly sagging down the peninsula located just north of Lake Okeechobee region. As this front washes out today, high pressure will build across the Southeast CONUS. This high will become fairly strong and control the weather pattern for South Florida for much of the reminder of week ahead. With the strength of this high, the pressure gradient will cause winds to begin to increase as well as they veer.
Clear skies, light winds and dew points in the 20s will allow temperatures to fall close to freezing once again tonight. A great day is on tap tomorrow with plenty of sunshine and temperatures climbing into the 50s with light winds as high pressure dominates the region.
Will keep the High Wind Warning going for the Bordeaux area (along I-25) and the Arlington/Elk Mountain area (along I-80) until 500 PM. However, this lull may be pretty short-lived as another upper level trough will rapidly move into the area. This system will move very rapidly into Wyoming over the next 24 hours with an associated cold front. Will keep the High Wind Watch going beginning Wednesday morning for the Wind Prone areas as well as eastern Platte and central Laramie counties through Wednesday night. Winds will calm down some on thursday as the main jet core and trough move to the south and east. The trough will undergo considerable enhancement further to the south and east.
1006 PM EST Tue Jan 7 2020 High pressure will prevail through late in the week. Quiet conditions overnight under the influence of high pressure arriving from the west, and rising heights aloft as a short wave lifts out well before daybreak. Clear skies and modest cold air advection behind a cold front far offshore will lead to seasonable min temps in the mid and upper 30s most places. Thursday: High pressure over the Mid-Atlantic states in the morning will move away while a warm front develops along our coast.
Mid evening surface analysis had a center of high pressure just to the west of our CWA. This high will continue shifting east tonight. Temperatures were running a degree or two cooler than expected so have cut a degree or two off forecast morning lows. More of our CWA will start of below freezing Wednesday. The combination of light winds and clear skies will aid in the radiational cooling effect, allowing temperatures to fall into the lower 30s by early Wednesday morning. A few locations around the region will spend an hour or 2 at or slightly below the freezing mark. Highs tomorrow will be in the low 60s with skies remaining mostly clear until a few clouds arrive in the afternoon.
Clear skies and relatively light winds should allow temperatures to fall into the low 30s across the area by sunrise. Temperatures are generally in the low to mid 50s with a moderate northwest wind. Expect above normal temperatures through this period with highs in the low to mid 60s.
A weak cold front extends from the lower Great lakes southwest through extreme southern IN into south central MO. But, high pressure over the eastern Northern Plains will be moving southeast today marking the entranceof a cooler air mass defined by average temperatures for this time of year. High pressure will drift southeast into the IL/IN regions today into early tonight, and there is another high pressure sitting down over the Gulf Coast states. The low level jet will increase over the area and couple with mixing and shoot temperatures into the upper 50 to lower 60s across the area.
320 AM EST Wed Jan 8 2020 Aviation section updated A weak cold front extends from the lower Great lakes southwest through extreme southern IN into south central MO. But, high pressure over the eastern Northern Plains will be moving southeast today marking the entrance of a cooler air mass defined by average temperatures for this time of year. High pressure will drift southeast into the IL/IN regions today into early tonight, and there is another high pressure sitting down over the Gulf Coast states. The low level jet will increase over the area and couple with mixing and shoot temperatures into the upper 50 to lower 60s across the area.
To our west, a large longwave trough is expected to develop on Thursday covering much of the US.
An upper trough over WA/OR will bring showers into southeast Oregon and southwest Idaho tonight through Wednesday. Snow levels around 4000 feet tonight will lower to around 3000 feet on Wednesday, with a mix of rain and snow in the lower valleys. Temperatures will be a cooler on Wednesday, but still around 5 degrees above normal. Change in this pattern will be quick, as the first in a series of troughs approaches the forecast area this evening. The trough axis is expected to move into eastern Oregon this evening, and into Idaho by Wednesday morning. Mountain snow expected as the trough moves through the area Wednesday and Thursday, with a snow-rain mix in the valleys, becoming all snow by Thursday morning when a second trough moves through.
Behind this wave, very dry and cooler air will filter across the region overnight. Temperatures will again be well above normal in our southeast CWA as highs will be in the low 40s.
1142 PM CST Tue Jan 7 2020 A 1032 mb high pressure center will cross North Dakota this evening and be centered across central Minnesota by Wednesday morning. This will drive a cold front southward into the area tonight. The front will attempt to lift northward as a warm front Wednesday.
1034 PM EST Tue Jan 7 2020 A strange cold frontal passage underway across Florida. Odd to say the least, although this wind shift to our north reveals a second/third push of cooler air is possible overnight.
High pressure will remain in firm control of the area resulting in a continued dry and stable airmass through the entire forecast period.
121 AM EST Wed Jan 8 2020 VFR to prevail through the period beneath high pressure.
Across the western US however broad upper trough sharpens as jet strengthens, and this deep trough advances into the plains by days end Fri. upper trough sharpens a bit more over the eastern plains and begins to go negative, then really surges eastward on Sat. Instability remains very unimpressive but depending how negative this trough goes, we could see an increase. progressive flow blows this pcpn out of here Sat evening, and a dry Sun is setting up behind passing front/upper trough.
Surface wind will remain light and become more S-SE Wednesday afternoon as high pressure shifts east of the region. /EC/ Mid evening surface analysis had a center of high pressure just to the west of our CWA. This high will continue shifting east tonight. Temperatures were running a degree or two cooler than expected so have cut a degree or two off forecast morning lows. More of our CWA will start of below freezing Wednesday. The combination of light winds and clear skies will aid in the radiational cooling effect, allowing temperatures to fall into the lower 30s by early Wednesday morning. A few locations around the region will spend an hour or 2 at or slightly below the freezing mark. Highs tomorrow will be in the low 60s with skies remaining mostly clear until a few clouds arrive in the afternoon.
This high will slowly move eastward as an upper level trough moves off the Rockies and into the Great Plains on Wednesday night and Thursday. Current model runs show little to no precipitation as a result of this trough. Temperatures both Wednesday and Thursday will remain in the upper 30 to upper 40 range with a few locations across southwest Nebraska even seeing the low 50s.
/issued 347 AM CST Wed Jan 8 2020/ Quiet weather will continue across the Mid-South today as high pressure currently over the Mid-South will begin to shift east.
400 AM MST Wed Jan 8 2020 The flow aloft will be westerly early today and will become more southwest thru the day as an upper level trof moves over UT. Surface winds will increase later today with the approach of that upper trof, with areas of gusty southwest winds. Tonight the upper level trof will moves across CO and is expected to bring some snow to the Continental Divide, with the Sawatch and Mosquito ranges seeing the highest chances for snow, but just some light accumulations.
SHORT TERM (Today through Thursday): High pressure moves east across the northern Gulf of Mexico as low pressure deepens across the Plains, strengthening the pressure gradient along the lower Texas coast, and increasing both southerly flow and moisture through the short term. The weak frontal boundary from yesterday returns north as a warm front into this evening, potentially kicking up a few showers, mainly offshore tonight. Temperatures near to slightly above normal into the low 70s are expected today after a cool morning.
322 AM CST Wed Jan 8 2020 An upper trough is over the Pacific Northwest and another upper trough is over the northeast U. Temperatures today will be similar or just slightly warmer than yesterday with highs mostly in the 60s. The upper trough to the west digs further south on Thursday with surface winds across the area becoming southwesterly.
447 AM CST Wed Jan 8 2020 Surface ridging built into the region overnight and will continue to slide to the east through today. Back to the south and east, will have 20s to lower 30s with increasing warm air advection as high pressure moves away.
/issued 322 AM CST Wed Jan 8 2020/ An upper trough is over the Pacific Northwest and another upper trough is over the northeast U. Temperatures today will be similar or just slightly warmer than yesterday with highs mostly in the 60s. The upper trough to the west digs further south on Thursday with surface winds across the area becoming southwesterly.
516 AM CST Wed Jan 8 2020 VFR conditions will prevail throughout today as high pressure remains over the area. Coupled with the clear skies, temperatures range from the lower/mid 30s north of I-10, with upper 30s/lower 40s elsewhere. With mostly clear skies expected again today, afternoon highs expected to reach the lower/mid 60s. High pressure will slip further east this evening and overnight, with east to southeast winds returning Gulf moisture and higher dewpoints overnight. By this time, will begin seeing the first influences of the approaching deep layer trough over the Western U.
513 AM CST Wed Jan 8 2020 Today through tonight: High pressure will continue to influence the weather over the ArkLaMiss region in the near term.
Weak ridging will move across the area today, returning the region to southwesterly flow aloft. Lee troughing will deepen throughout the day and our easterly winds will become southerly. Despite the frontal passage, highs will be similar if not even slightly warmer than today due to weak downslope wind.
High pressure at the surface and aloft will result in fair skies, low dewpoints, and mildly above normal temps. Westerly winds will be breezy in the higher mountains today, upwards of 20 mph or so.
A rather pleasant yet breezy day is expected today with temperatures in the lower 70s under partly cloudy skies. Temperatures tonight will be warmer due to the increased moisture, with roughly a 10-20 degree difference compared to early this morning. SSW flow at H825 will lead to warmer temperatures Thursday, with highs for most inland locations in the lower 80s.
Backdoor cold front has settled south over the region, with low clouds and some fog in far western SD. Frontal zone will shift back NE today ahead of a stronger trough.
527 AM CST Wed Jan 8 2020 A line of moisture is pushing east this morning in the thermal gradient between arctic high pressure to the east and low pressure moving off the Rockies. As the low moves east into the Dakotas, southeast winds will become breezy across the region at 20 to 30 mph with gusts to 40 mph. The bulk of the forcing will be centered over ND with this low. Temperatures will be much colder in the east today under the lingering influence of the high topping out in the lower teens.
309 AM MST Wed Jan 8 2020 Remaining snow showers this morning will lift northeast and southeast surface winds will become southwest as a warm front passes through NE Montana today. By tonight, the winds will switch around to the northwest with a cold frontal passage.
Coupled with the clear skies, temperatures range from the lower/mid 30s north of I-10, with upper 30s/lower 40s elsewhere. With mostly clear skies expected again today, afternoon highs expected to reach the lower/mid 60s. High pressure will slip further east this evening and overnight, with east to southeast winds returning Gulf moisture and higher dewpoints overnight. By this time, will begin seeing the first influences of the approaching deep layer trough over the Western U.
501 AM CST Wed Jan 8 2020 A brief period of high pressure will control the weather today with dry weather and should continue through early Thursday.
644 AM EST Wed Jan 8 2020 Dry high pressure will be over the area through Thursday.
Jet energy and surface cyclogenesis, associated with this trough, will tighten pressure gradients once again this afternoon and evening. Have opted to cancel and upgrade the High Wind Watch across the gap areas and cover the foothills and adjacent plains with an SPS as wind gusts may be slightly weaker there. Temperatures today should be significantly warmer than the past few days, as mid level Warm advection and downslope warming bump highs into the 50s.
312 AM CST Wed Jan 8 2020 (Today and Tonight) Temperatures were below freezing early this morning across much of the central and southern parts of West Central Texas, where winds have been light. The main weather changes for today and tonight will be breezy conditions, warmer temperatures tonight, and a substantial increase in low-level moisture (dewpoints climbing to 50 degrees plus by early Thursday morning). An upper trough will move east into the central and northern Rockies today, and across the central and northern Plains tonight. Expect highs this afternoon to be not much different than yesterday, in the lower 60s across the Northern Edwards Plateau and mostly in the mid 60s elsewhere.
Dangerous wind chills have been briefly observed this morning across the northeast, around 25 below zero, and will continue over the next few hours before high pressure slides out of the region. Ahead of the low, synoptic scale forcing will start to increase this afternoon and this evening. Some guidance suggests the banding signal will extend further south into central North Dakota, but the area most favored for 2-5 inches of snow looks to be in and around the Turtle Mountains, extending as far west as Renville county, and extending as far south as northeastern Ward county and northern McHenry and Pierce counties; generally along and north of the highway 2 corridor and east of Burke and Mountrail counties.
331 AM CST Wed Jan 8 2020 A line of moisture is pushing east this morning in the thermal gradient between arctic high pressure to the east and low pressure moving off the Rockies. As the low moves east into the Dakotas, southeast winds will become breezy across the region at 20 to 30 mph with gusts to 40 mph. The bulk of the forcing will be centered over ND with this low. Temperatures will be much colder in the east today under the lingering influence of the high topping out in the lower teens.
Across the western US however broad upper trough sharpens as jet strengthens, and this deep trough advances into the plains by days end Fri. upper trough sharpens a bit more over the eastern plains and begins to go negative, then really surges eastward on Sat. Instability remains very unimpressive but depending how negative this trough goes, we could see an increase. progressive flow blows this pcpn out of here Sat evening, and a dry Sun is setting up behind passing front/upper trough. Weak high pressure will influence Middle TN today providing dry conditions and light southwest winds.
Dry conditions and above normal daytime temperatures will give way to cooler temperatures after today.
VFR conditions prevail through the TAF period as high pressure dominates. Cloud cover will likely increase from south to north, especially near the lower Texas coast as southerly flow returns and the frontal boundary heads north as a warm front. /issued 427 AM CST Wed Jan 8 2020/ SHORT TERM (Today through Thursday): High pressure moves east across the northern Gulf of Mexico as low pressure deepens across the Plains, strengthening the pressure gradient along the lower Texas coast, and increasing both southerly flow and moisture through the short term. The weak frontal boundary from yesterday returns north as a warm front into this evening, potentially kicking up a few showers, mainly offshore tonight. Temperatures near to slightly above normal into the low 70s are expected today after a cool morning.
Weak low pressure is expected to pass through southern Idaho during the day today. So far, precipitation has been limited to a small area of rain/snow/ possible freezing rain moving through areas south of the Snake River and east of Interstate 15. While surface temperatures are still fairly cool, there is a warm layer that is above the freezing mark aloft that will melt the precipitating ice crystals and produce a threat of freezing rain and drizzle from areas west of American falls and south of Lincoln County, then down to the Utah border, until 900 AM this morning. Wind-wise, breezy conditions will accompany this low this afternoon and through tonight. All of this with temperatures below freezing for nearly all locations makes for a snowy week.
255 PM EDT Mon Oct 4 2021 Upper level trough over the eastern U.
237 PM MDT Mon Oct 4 2021 Overview: An upper level ridge. Today-Tuesday night: With the Tri-State area beneath an upper level ridge -- above normal temperatures, dry conditions, and light winds will persist.
We have a stout short wave dropping out of the S Plains today and this will carve out a "cut off" upper low across our areas for Tue.
The ridge continues to build aloft on Tuesday as two upper-level lows move across the south. The breezy winds will also usher in weak cold air advection, which will act to keep temperatures a touch cooler than what we had on Monday, so look for lower 70s in western MN & IA to upper 70s out in central SD.
153 PM MDT Mon Oct 4 2021 Across the region this morning, high pressure over the central Plains is providing clear skies area-wide. The latest RAP40 500mb analysis, along with the current mid level water vapor imagery, is showing a building amplified ridge over the Rockies making a slow shift eastward towards the Plains region. There is an upper low over the Great Lakes region, and another off Baja California. Latest guidance for the short term period keeps the upper ridge in place over the Tri-State area.
202 PM MDT Mon Oct 4 2021 Water vapor shows upper ridge axis extending from the Four Corners north/northeast through the Northern Plains, with upper trof just offshore the Pac NW. Nearly cut-off low is noted offshore southern CA with secondary and weaker low over far northern UT. At the surface, broad trof covers the Northern Rockies/Northern Plains. Upper low currently over far northern UT will shift through the Northern Rockies tonight, with surface trof becoming more pronounced and lifting through eastern WY/MT into the western Dakotas. Thermal ridge then builds overhead on Tuesday, resulting in temps being a few degrees warmer than today.
1119 AM MDT Mon Oct 4 2021 It'll be a warm and dry start to the work week as a ridge of high pressure settles overhead. Its axis, currently situated directly over the Western Slope, will shift east towards the Northern Plains later this afternoon in response to an approaching closed low off the coast of southern California. Before the high exits the region, high temperatures today will climb to 3 to 6 degrees above normal for most sites under sunny skies.