Aikyam-Lab/Synoptic-Bench huggingface dataset:
Have increased pops mainly across the eastern half of the forecast area and included a chance for freezing drizzle along with the light snow and flurries. Areas of freezing fog could also develop overnight. Several days of sub freezing high temperatures are in store for southwest Kansas as an Arctic airmass remains entrenched across the region. There is some potential for snow flurries and freezing drizzle, along with areas of freezing fog, to develop later tonight.
420 AM CST Sun Feb 7 2021 (Issued 420 AM CST Sun Feb 7 2021) Today through Monday night: Relative high pressure arcing in from the northern plains should keep us sunny for a good portion of the morning before clouds increase ahead of another clipper system.
416 AM CST Sun Feb 7 2021 Sfc analysis shows the front that moved through late yesterday is now well east and southeast of the area while high pres centered over the northern plains ridges southward into E TX.
650 AM EST Sun Feb 7 2021 High pressure builds in behind low pressure pushing off to the northeast today, allowing for drying conditions with gusty winds.
610 AM EST Sun Feb 7 2021 A fast moving area of low pressure will track south of Pennsylvania early today, then high pressure will build in from the Great Lakes tonight and Monday.
401 AM EST Sun Feb 7 2021 Snow showers will cross the region today, with the passage of a cold front. Problematic accumulation will be confined to the West Virginia ridges. A cold front, with limited moisture and weak upper level support, will quickly sweep across the region today. The highest accumulations are anticipated over the ridges. The heavier snowfall will be due to crossing low pressure over the Mid-Atlantic. This low will advect deeper moisture into southeast locales, thus increasing snow fall totals. Monday will be dry and cold, with a good amount of sunshine expected, as high pressure slides across the region.
A cooler and more unsettled pattern will develop mid to late this week.
Current temperatures are in the low to mid 70s and dew points hover around 70F. This activity is associated with a cold front that is expected to move slowly to the southeast today. The aforementioned cold front will approach our area tonight, but it will be weakening in the process. The subtropical ridge will strengthen on Monday and dominate our weather conditions for most of this upcoming work week. This will allow the stalled cold front to backtrack as a warm front, bringing drier weather conditions to the Florida Keys.
Early morning surface analysis had a cold front across our southeast zones that will continue to push southeast this morning and bring and end to the very light rain/drizzle across our southeast. This will lead to colder than normal temperatures with highs this afternoon only in the 40s across our northern zones and in the low to mid 50s elsewhere. Lows tonight will be in the 30s areawide with coldest temperatures around freezing in our northeast.
413 AM CST Sun Feb 7 2021 A very cold morning out there today with arctic air firmly entrenched and surface ridging building across the Upper Midwest.
646 AM EST Sun Feb 7 2021 Weak low pressure along the coast this morning will move northeast and deepen off the Mid Atlantic coast. Light rain and drizzle will exit the area around mid-morning as the short wave trough moves out of the area. Strong pressure ridge centered over the Mid Atlantic region will extend into the area. In the afternoon the ridge will shift off the coast and weak warm advection will develop.
850 AM EST Sun Feb 7 2021 High pressure builds in behind low pressure pushing off to the northeast today, allowing for drying conditions with gusty winds.
At this time, little accumulation is expected with the highest amounts around a half inch to an inch. This includes the potential for additional light snow chances across central Missouri and freezing drizzle chances across southeast Kansas and southwest Missouri. As the lower atmosphere becomes saturated, the resulting precipitation type at the surface would be freezing drizzle with surface temperatures below freezing. While current guidance such as the HREF suggest the freezing drizzle would be light, it could have potential impacts. The best convergence and lift in the lower levels will occur along the spine of the Ozark plateau. Road temperatures will likely be below freezing as this precipitation falls. Temperatures will slowly rise above freezing into the middle 30s by mid-afternoon on Monday, while portions of central Missouri will likely only top out in the upper 20s for highs.
824 AM EST Sun Feb 7 2021 A fast moving area of low pressure will track south of Pennsylvania early today, then high pressure will build in from the Great Lakes tonight and Monday.
Heavier bands of snow are expected to remain north of the MO River with the highest accumulations in far NW MO near the IA border.
703 AM EST Sun Feb 7 2021 Snow showers will cross the region today with the passage of a cold front. Problematic accumulation will be confined to the West Virginia ridges. Early returns from the 12z sounding plus sfc obs confirm abundant dry air remains in place over much of the region as the sfc cold front continues southeast. More notable accumulations are expected over the southeastern ridges where better moisture profiles and upper support lay due to closer proximity to the coastal low/exiting upper jet.
In the back country of central Idaho, the Clearwater and Bitterroot mountains will pick up another foot of snow while west winds continue to gust 20-30 mph with gusts 30-40 mph at the highest elevations.
There is a slight chance of freezing drizzle across parts of Northeast Oklahoma late tonight though will hold off on mentioning due to limited forecast coverage. The shallow cold airmass has sagged through much of the region, although in typical fashion it has hung up across the higher terrain of southeast OK into western AR. Forecast soundings/HREF are supportive of areas of drizzle/freezing drizzle/flurries across parts of northeast OK into far northwest AR, with some light glazing possible before surface temperatures gradually warm above freezing. May also see some areas of light freezing drizzle for parts of far northeast OK/northwest AR.
Collar (Issued 420 AM CST Sun Feb 7 2021) Today through Monday night: Relative high pressure arcing in from the northern plains should keep us sunny for a good portion of the morning before clouds increase ahead of another clipper system.
Accumulating snowfall has ended for most areas, except for the high terrain of the east TN Mountains. Partial clearing is occurring across the lower elevations of the east TN Valley. We will see conditions improving to MVFR this morning, then to VFR as the low clouds exit late today/early this evening. Chattanooga Airport, TN 48 30 57 42 61 / 20 0 0 10 10 Knoxville McGhee Tyson Airport, TN 42 25 51 36 55 / 50 0 0 10 10 Oak Ridge, TN 43 25 52 37 55 / 40 0 0 20 20 Tri Cities Airport, TN 39 21 50 33 51 / 60 0 0 20 20 TN.
528 AM EST Sun Feb 7 2021 Snow showers will cross the region today, with the passage of a cold front. Problematic accumulation will be confined to the West Virginia ridges. A cold front, with limited moisture and weak upper level support, will quickly sweep across the region today. The highest accumulations are anticipated over the ridges. The heavier snowfall will be due to crossing low pressure over the Mid-Atlantic. This low will advect deeper moisture into southeast locales, thus increasing snow fall totals. Monday will be dry and cold, with a good amount of sunshine expected, as high pressure slides across the region.
Today through Monday night Low cloudiness, freezing fog and patchy light freezing drizzle along and east of the Caprock this morning will lift by mid to late morning with the low clouds eroding from west to east by this afternoon. Low cloudiness, freezing fog and freezing drizzle will again develop after 06Z Monday mainly across the northeastern half of the Panhandles until around 15Z Monday or so.
641 AM EST Sun Feb 7 2021 A fast moving area of low pressure will track south of Pennsylvania early today, then high pressure will build in from the Great Lakes tonight and Monday.
Latest surface analysis places a cold front from Toronto, Canada southwest into Pittsburgh, Pennsylvania and back through Knoxville, Tennessee and into north Mississippi at this hour. This high is expected to push east southeast today, with the cold front remaining nearly stationary over north Mississippi. Drier air moving into the area under a weak high pressure. First, a warm front is expected to move north over the area and stall becoming a stationary front.
A cooler and more unsettled pattern will develop by midweek. Utah and southwest Wyoming remain sandwiched in between a ridge off the Pacific coast and a broad trough centered over southern Canada.
Temperatures have climbed above freezing at FYV and will likely continue to slowly climb in Benton county as stronger warm advection continues. Temperatures should fall back below freezing overnight across this area as more easterly flow develops with the potential for light freezing drizzle. As stronger upper wave approaches tonight, precipitation will begin to increase in coverage across northeast Oklahoma with scattered areas of light freezing rain developing in addition to the ongoing patchy freezing drizzle. Low temperatures remain tricky in the Tulsa metro with the potential for southern portions of the county to briefly climb above freezing this evening. Still, the freezing rain/freezing drizzle threat appears high enough overnight into Monday morning to also include in the advisory, especially across northern portions of the county.
1215 PM EST Sun Feb 7 2021 Low pressure will move away from the North Carolina coast today with high pressure building south into the region tonight and Monday.
1044 AM EST Sun Feb 7 2021 A cold front stretches southwest across Florida, from the Space Coast to Sarasota. Thunderstorms continue to thrive along a prefrontal trough, ahead of the drier northwesterly breezes. Temperatures are in the upper 70s with dewpoints in the lower 70s. The forecast calls for highs in the lower 80s with 20% rain chances. A cold front continues to move slowly southeast into Southwest Florida, and will stall as it nears the Florida Keys tonight.
1210 PM EST Sun Feb 7 2021 A fast moving area of low pressure along the mid Atlantic coast will move out to sea this afternoon. High pressure will build in from the Great Lakes tonight and Monday.
126 PM EST Sun Feb 7 2021 High pressure builds from the west through tonight. This high will provide with clearing skies across the region allowing temperatures to plummet into the teens for the most part, and even into the single digits over the snow covered areas of our eastern mountains. Dry, quiet weather starts off the short term period as surface level high pressure crosses the area. Temperatures should moderate back towards normal during the day Monday as southwest flow draws warmer air into the CWA.
Look for lows in the lower to mid 20s for most areas. On Monday, nice temperature rebound as a warm front works northward. Highs will reach into the lower to mid 50s under mostly sunny skies.
As the high pressure builds into the area and drier northwesterly low level flow persists, skies are expected to become mostly clear during the overnight hours and remain so into Monday. The high pressure center will move east of the forecast area on Monday morning, and low level winds will shift to southeasterly as a result. Afternoon highs will also be warmer under mostly clear skies, reaching into the upper 50s and 60s.
1252 PM EST Sun Feb 7 2021 A fast moving area of low pressure along the mid Atlantic coast will move out to sea this afternoon. High pressure will build in from the Great Lakes tonight and Monday.
Accumulating snowfall has ended for most areas, except for the high terrain of the east TN Mountains. Partial clearing is occurring across the lower elevations of the east TN Valley. SR Chattanooga Airport, TN 28 57 42 61 43 / 0 0 10 10 20 Knoxville McGhee Tyson Airport, TN 23 51 36 55 39 / 0 0 10 10 20 Oak Ridge, TN 23 52 37 55 39 / 0 0 20 20 20 Tri Cities Airport, TN 20 50 33 51 36 / 0 0 20 20 10.
High pressure builds in from the south tonight with wind becoming light and variable.
However, a cold front will keep high temperatures a bit lower across the northern portions of the Big Country.
/19/ High pressure at the surface will assert itself over the region today, as flow aloft steadily becomes more zonal. A colder drier airmass will reside over the CWA, in the wake of last night's cold frontal passage. Early morning surface analysis had a cold front across our southeast zones that will continue to push southeast this morning and bring and end to the very light rain/drizzle across our southeast. This will lead to colder than normal temperatures with highs this afternoon only in the 40s across our northern zones and in the low to mid 50s elsewhere. Lows tonight will be in the 30s areawide with coldest temperatures around freezing in our northeast.
A weak wave will move across the Great Lakes as an upper level trough pours cold air into NY and PA.
Large area of upper level low pressure remains across south central Canada through mid-week, then drops south into the Northern Plains towards the end of the work week.
Tomorrow brings cooler temperatures and increasing clouds, although dry conditions will likely continue through the middle of the week.
Highs on Monday generally in the low to mid 70s, with far western areas along the Rio Grande in upper 70s where clearing takes place earlier.
High pressure at the surface will assert itself over the region today, as flow aloft steadily becomes more zonal. A colder drier airmass will reside over the CWA, in the wake of last night's cold frontal passage. Early morning surface analysis had a cold front across our southeast zones that will continue to push southeast this morning and bring and end to the very light rain/drizzle across our southeast. This will lead to colder than normal temperatures with highs this afternoon only in the 40s across our northern zones and in the low to mid 50s elsewhere. Lows tonight will be in the 30s areawide with coldest temperatures around freezing in our northeast.
Conditions will shift to a fairly complicated setup thanks to a strong push of polar air south into the southern plains with a cold front nosing into the northeastern corner of the forecast area.
1222 PM EST Sun Feb 7 2021 High pressure builds from the west through tonight. This high will provide with clearing skies spreading from west to east across the region. Dry, quiet weather starts off the short term period as surface level high pressure crosses the area. Temperatures should moderate back towards normal during the day Monday as southwest flow draws warmer air into the CWA.
The cool, northwest flow is opening the door to a much cooler airmass that will begin filtering in through the upcoming week. A slow exit at that, this longwave trough will filter in colder air aloft later in the week (more on that below), so our low temperatures this morning in the low 30s will see an incredible change by mid-late week when our morning lows are about 20F degrees colder.
1045 AM EST Sun Feb 7 2021 Line of storms ahead of advancing cold front will continue southeast through Okeechobee County and the Treasure Coast into late morning and the afternoon hours as forward movement slows. Low level winds will quickly decrease through early afternoon, with 925mb winds currently around 30-40 knots falling to 15-25 knots as low pressure near the Mid-Atlantic coast continues to push farther NE and away from the area. Outside of this activity, SW winds around 15-20 knots will weaken into early afternoon, and then restrengthen up to 15-20 knots out of the N/NE later this afternoon into tonight behind cold front moving southward through the area.
306 PM EST Sun Feb 7 2021 High pressure will bring the only day of sunshine all week on Monday.
Northerly flow at 850mb gives way to southerly flow overnight as the trough lifts further northeast. Monday night temperatures will be warmer as clouds increase ahead of another cold front.
108 PM EST Sun Feb 7 2021 High pressure builds in behind low pressure pushing off to the northeast today, allowing for drying conditions with gusty winds.
Temperatures tonight will range from the mid 30s across the northeast portion of the area to the lower 40s across the southwest portion. Meanwhile, a cold front at the surface will begin making a very slow progression southward across the Plains.
Strongest winds will be over the higher terrain and in the Snake River Valley southeast of Boise, where speeds will be in the 15-25 mph range, with gusts over 35 mph possible.
Have increased pops mainly across the eastern half of the forecast area and included a chance for freezing drizzle along with the light snow and flurries. Areas of freezing fog could also develop overnight. Several days of sub freezing high temperatures are in store for southwest Kansas as an Arctic airmass remains entrenched across the region. VLIFR in freezing fog and/or freezing drizzle is expected again tonight, especially for LBL and DDC terminals. GCK will likely be on the edge of any dense freezing fog development, but regardless, stratus ceiling will be at or below 500 feet tonight through early Monday.
230 PM EST Sun Feb 7 2021 High pressure will be building into the area tonight as the front continues to push south and then stalls across south Florida through Monday.
/issued 416 AM CST Sun Feb 7 2021/ Sfc analysis shows the front that moved through late yesterday is now well east and southeast of the area while high pres centered over the northern plains ridges southward into E TX.
1151 AM EST Sun Feb 7 2021 High pressure builds in behind low pressure pushing off to the northeast today, allowing for drying conditions with gusty winds.
SHORT TERM (Tonight through Monday Night): Zonal to slightly southwesterly flow aloft coupled with high pressure building across the Gulf of Mexico will keep Deep South Texas warm through Monday night. Increasing southerly flow along the lower Texas coast and abundant low level moisture will build cloud cover tonight and persist through the day on Monday. Temperatures tonight range from the mid 50s to low 60s, rebound to the upper 70s and low 80s tomorrow, and only dip into the low to mid 60s Monday night.
As we head into Monday, increased forcing ahead of an approaching trough will enhance cloud cover once again as upper level moisture begins to flow northward. Further north along highway 84, temperatures will likely stay in the low to mid 50s. Monday will be significantly warmer as southerly return flow increases.
309 PM EST Sun Feb 7 2021 High pressure will build in from the Great Lakes tonight and Monday.
Clearing skies and downslope winds will allow daytime high to reach into the low to mid 50s. Strong pressure ridge centered over the Mid Atlantic region will extend into the area. In the afternoon the ridge will shift off the coast and weak warm advection will develop.
915 AM PST Sun Feb 7 2021 Areas of dense fog along the Coast will dissipate late this morning, leaving fair skies and cooler weather, especially over coastal areas.
122 PM EST Sun Feb 7 2021 A fast moving area of low pressure along the mid Atlantic coast will move out to sea this afternoon. High pressure will build in from the Great Lakes tonight and Monday.
Latest surface analysis places a cold front from Ottawa, Canada back through Appalachia and into north Mississippi. This will help lift the front back as a warm front during the day on Monday.
/issued 230 PM EST Sun Feb 7 2021/ High pressure will be building into the area tonight as the front continues to push south and then stalls across south Florida through Monday.
Clouds will keep temperatures about 5 to 10 degrees warmer than this morning.
300 PM MST Sun Feb 7 2021 Northwest flow aloft over the region with arctic high pressure over the plains.
Two areas of snow (one ongoing and one forecast) will affect the area through tonight, while temps remain subfreezing essentially all week. This is on the higher side of guidance and is likely translating to almost 2" of snow given SLR's around 17:1. NAMnest, which has been faring relatively well the past couple evenings, and the higher res GFS to a degree, suggest a narrow fgen band along I-80. Hedged on the cooler end of guidance as today's temps were stagnant in the single digits. For the rest of the workweek, bitter cold remains the top weather story as the large upper trough sits on top of the northern US. While discrepancies exist in the magnitude of the cold and the track of the main lobe of Arctic air, western Nebraska should remain subfreezing nonetheless.
Temperatures on Monday may be a touch warmer than Sunday, but not really noticeable as wind chills will remain in the negative single digits.
/issued 348 PM CST Sun Feb 7 2021/ Clear weather and cooler air has moved over the area behind the cold front that came through yesterday.
359 PM MST Sun Feb 7 2021 Upper air analysis shows the broad upper trough persisting across much of the CONUS today.
Large upper low continues to reinforce cold arctic air over the Northern Plains/Upper Midwest with very little change in the air mass from last night. "Warmer" than today/tonight, but not what anyone will call warm.
Cloud cover will gradually decrease this evening as drier air moves into the area behind the departing cold front.
Winds will remain gusty in these locations for the next few hours before surface heating wanes and the lower atmosphere decouples shortly after sunset. Heading into the start of the new work week, the forecast area will remain stuck between a ridge over the northeast Pacific Ocean and a deep closed low south of Hudson Bay.
Did notice a few observations were slightly cooler than expected across the southern/central valley therefore lowered hourly temps a degree over the next few hours. This lower cloud should erode at CHA by early afternoon, lingering at TYS/TRI yet VFR. CDG Chattanooga Airport, TN 28 57 42 60 43 / 0 0 10 10 10 Knoxville McGhee Tyson Airport, TN 25 53 37 55 39 / 0 0 10 10 10 Oak Ridge, TN 25 53 37 54 39 / 0 0 10 10 10 Tri Cities Airport, TN 22 50 34 53 36 / 0 0 20 10 10.
909 PM EST Sun Feb 7 2021 High pressure will bring the only day of sunshine all week on Monday.
Overnight winds will be light for most as an area of high pressure dominates the upper Midwest. Lake effect snow over the very northern tip of Bayfield County has been leading to light accumulations, particularly in the higher elevations north of Bayfield.
129 PM PST Sun Feb 7 2021 Mostly sunny this afternoon as the low clouds and fog have cleared from the coastal areas. Expect the low clouds and fog to return tonight into Monday morning.
In addition, the lower stratus may impact visibilities as well.
An upper level ridge remains situated off the West Coast this afternoon, promoting dry conditions and mild temperatures across the Desert Southwest.
/issued 233 PM CST Sun Feb 7 2021/ SHORT TERM (Tonight through Monday Night): Zonal to slightly southwesterly flow aloft coupled with high pressure building across the Gulf of Mexico will keep Deep South Texas warm through Monday night. Increasing southerly flow along the lower Texas coast and abundant low level moisture will build cloud cover tonight and persist through the day on Monday. Temperatures tonight range from the mid 50s to low 60s, rebound to the upper 70s and low 80s tomorrow, and only dip into the low to mid 60s Monday night.