Aikyam-Lab/Synoptic-Bench huggingface dataset:
A generally quiet night along the Keys and its coastal waters is to be interrupted today as a frail cold front looms just north of the island chain and across southern mainland Florida. Despite increasing speed convergence, the KBYX radar detects only a few small clusters of showers in the Straits of Florida southwest of the Lower Keys. The stalled cold front and associated veering profile will be an excellent source of lift as northeast to easterly winds streak across the warmer Florida Current waters. In addition, increasing moisture aloft arriving from the west around the southern periphery of an eastern United States long wave trough will result in an environment increasingly capable of sustaining deeper and more organized convection. From synopsis, a cold front passing through the Florida Keys early this morning will freshen northerly breezes throughout today.
A strong cold front has moved into western Minnesota and eastern South Dakota early this morning. There is light snow falling ahead of this cold front. A strong cold front will move across the area today with scattered snow showers. Scattered showers will develop along the Highway 20 corridor after 12 UTC and spread south and eastward across the area through the day.
Highs today will be at or a few degrees warmer than yesterday and still running below normal.
The band will dissipate throughout the morning hours as drier air associated with the arctic cold front moves into the region. A ridge of high pressure settles back over the region this weekend causing strong valley inversions to develop once again.
500 AM EST Thu Nov 17 2022 (Today through Friday) Broad long wave trough remains embedded over the CONUS through the short term, bringing continued reinforcement of the cold air over the CWA through CAA today. Despite ample sunshine over all but far south central GA, temperatures will still struggle to get out of the 40s in north GA and the lower 50s in central GA.
(Today through Friday) Broad long wave trough remains embedded over the CONUS through the short term, bringing continued reinforcement of the cold air over the CWA through CAA today. Despite ample sunshine over all but far south central GA, temperatures will still struggle to get out of the 40s in north GA and the lower 50s in central GA.
An upper level trough has helped continue widespread light snow across the region. In addition, a cold front will move through later this morning.
304 AM CST Thu Nov 17 2022 A strong cold front has moved into western Minnesota and eastern South Dakota early this morning. There is light snow falling ahead of this cold front. A strong cold front will move across the area today with scattered snow showers. Scattered showers will develop along the Highway 20 corridor after 12 UTC and spread south and eastward across the area through the day.
Additional snow showers are possible late tonight into Friday as a cold front sweeps east across the area. High pressure looks to offer dry but cold temperatures this weekend. Temperatures reach the low 30s, but the feels- like will in the 20s. Associated surface cold front to sweep thru the area late tonight and Friday morning. Cold lows in the lower and middle 20s. Cold front to push thru Friday morning with considerable cloudiness in the CAA pattern. High pressure begins to nose into the Ohio Valley from the south with a considerably cold air mass moving in behind the front.
Additional snow showers are possible late tonight into Friday as a cold front sweeps east across the area. High pressure looks to offer dry but cold temperatures this weekend. Mean mid level trof over the eastern CONUS. Associated surface cold front to sweep thru the area late tonight and Friday morning. Cold lows in the lower and middle 20s. Cold front to push thru Friday morning with considerable cloudiness in the CAA pattern. High pressure begins to nose into the Ohio Valley from the south with a considerably cold air mass moving in behind the front.
Cloudy conditions will begin to increase overnight as another cold front drops from the north and brings colder northerly flow to the area.
532 AM CST Thu Nov 17 2022 (Today through Friday) A cold front is passing through the area right now. A cold high pressure system will build in today and will serve to keep the area quite chilly.
conts to be dominated by a large scale trof. While ltl in the way of accumulation is anticipated due to a lack of sig moisture, some of the higher elevations still could see a light dusting of snow. A few flurries wl be possible early Fri, but the highlight wl again be the colder temps.
Snow will begin to taper off this morning, but could linger into the afternoon hours over and near the higher terrain of North- central Montana. Afternoon highs today will likely be in the lower teens at most locations, with overnight lows in the single digits and teens below zero Friday morning. As the snow continues to diminish from north to south, effects of the Arctic front begin to reveal its evil head with afternoon temperatures in the lower teens across the board. Toward the end of the outlook period, clouds begin to clear out northwest to southeast as high pressure from Canada propagates southeastward.
220 AM MST Thu Nov 17 2022 Snow will begin to taper off this morning, but could linger into the afternoon hours over and near the higher terrain of North- central Montana. Afternoon highs today will likely be in the lower teens at most locations, with overnight lows in the single digits and teens below zero Friday morning. As the snow continues to diminish from north to south, effects of the Arctic front begin to reveal its evil head with afternoon temperatures in the lower teens across the board.
529 AM CST Thu Nov 17 2022 (Today through Friday afternoon) Satellite this morning is showing cloud cover across the entirety of the CWA that is gradually moving east as an upper trough moves across New Mexico. An amplifying West Coast ridge and another trough moving across the Central Plains will push a cold front into the Permian Basin Friday morning. Have stayed close to ensemble NBM guidance with this forecast though am wary that temps could be a bit colder if the higher resolution of the NAM in the lower levels does a better job of capturing the surface cold pool.
509 AM CST Thu Nov 17 2022 (Today through Friday) Cold front that brought some scattered flurries to northern portions of the midstate yesterday evening has moved off to our east, and much colder and drier air is now in place with temperatures in the upper 20s to low 30s and dewpoints in the 10s. Temps will be slightly warmer on Friday but still cold with lows in the 20s and highs in the 40s prior to a reinforcing cold front pushing through the region.
High pressure expected to keep cold and dry conditions in place for the Silver state through the weekend. Some patchy freezing fog will be possible near valley drainages and lakes. This is the result of a high pressure system that will continue to reside west of the area.
(This evening through Friday) The main headline will remain another round of freezing temperatures across the area for tonight. In fact, another cold front will bring some more cold air across the region on Friday.
1054 AM CST Thu Nov 17 2022 (Today through Friday) A cold front is passing through the area right now. A cold high pressure system will build in today and will serve to keep the area quite chilly.
358 PM EST Thu Nov 17 2022 A cold front moves through the area overnight into Friday morning, bringing snow showers to the area. High pressure moves in over the weekend and temperatures plummet with overnight lows in the teens. As this cold front begins to work into the forecast area around midnight, clouds thicken and snow showers move in from west to east. West winds around 15 MPH with gusts up to 25 MPH, which will drop wind chill readings down into the teens, despite the daytime highs in the low 30s.
But, model blend guidance does look a bit too cool both tnt and Friday night given continued boundary layer mixing, thus mixed in some "warmer" MOS data to lift lows a touch.
(Rest of Today) A dry cold front that moved across the area last night has brought colder air to the region. Cold air will continue to advect across the area, as cold high pressure over the Southern Plains builds eastward. 925mb temperatures generally remain below freezing into tonight. Highs thus should stay on the cool side, mainly in the lower 40s.
1241 PM EST Thu Nov 17 2022 With building cold high pressure settling over the forecast area skies are now clear with only a few lingering low clouds that are rapidly dissipating over southwest Virginia. The cold temperatures in the 20s early this morning are only slowly warming above freezing as north to northwest winds continue to bring in cold air into the region. This should be short lived however, and we should see clearing skies after 12Z behind the exiting trough. The rest of the day will feature building high pressure providing mostly clear skies and chilly temperatures, with highs mainly from the upper 30s to mid 40s. Clear skies and light to calm winds tonight will allow temps to drop into the lower to mid 20s tonight.
A cold front is in the process of pushing through the Keys and coastal waters this morning, which has served to drop temps and dewpoints around 3-5 degrees from this time yesterday. A few sprinkles are possible under this deck through the remainder of the morning hours, but otherwise the lower troposphere is too dry to support any organized stratiform rain or showers. A cold front moving from north to south over the Florida Keys has brought moderate to fresh northerly breezes across the coastal waters. (12Z TAFS) Cloudiness associated with a cold front is just north of both the EYW and MTH terminals.
1129 AM CST Thu Nov 17 2022 (Rest of Today) A dry cold front that moved across the area last night has brought colder air to the region. Cold air will continue to advect across the area, as cold high pressure over the Southern Plains builds eastward. 925mb temperatures generally remain below freezing into tonight. Highs thus should stay on the cool side, mainly in the lower 40s.
Expect skies to become only partly cloudy by this evening before more clouds build in after midnight ahead of an approaching cold front. Temperatures look to drop into the lower 20s late tonight. A cold front will begin approaching from the northwest late tonight and likely push into the region during the early morning hours tomorrow.
As this system exits the region this afternoon, high pressure will control the overall weather pattern, though occasional upper level disturbances will pass across the region through the weekend, triggering rounds of clouds and occasional breezy conditions. The disturbance will also bring with it a reinforcing shot of cooler air, with afternoon high temperatures ranging from the low 30s across southeast West Virginia, to the mid 40s across the Piedmont of North Carolina into Southside Virginia. With clearing skies heading into the late evening hours, strong radiational cooling will develop, resulting in overnight temperatures falling into the low to mid 20s for most.
A cold front is currently moving into northern parts of Oklahoma and will continue to push southward through the overnight hours. Much cooler temperatures are expected behind the cold front, with overnight lows ranging from the 20s across northern Oklahoma to low 30s elsewhere.
A cold pattern prevails through this weekend as an elongated trough remains over the Midwest and Northeast. Snow showers will continue to dissipate this afternoon/evening as ridging builds from the west and dry air feeds into the dendritic growth zone (DGZ).
Dry cold front moving through Friday. Temperatures should be at least as warm as today and where winds pick up a few degrees warmer. By Friday night a cold front should be nearly clear of our area to the east, followed by high pressure filling in behind this front.
A cold westerly wind flow will continue tonight with high pressure trying to edge into the region. An upper level disturbance and a moisture starved cold front will push through on Friday.
(This evening through Friday night) Cold front will continue to move south across the rest of the Panhandles this afternoon. Some flurries will be possible across the area as the cold front squeezes out what moisture the atmosphere has in it. Freezing drizzle would not be out of the question, mainly in the west for a brief period overnight. But the cold air will only deepen during the day Friday in which the freezing drizzle if any should end and only flurries remain.
1215 PM EST Thu Nov 17 2022 (Today through Friday) A broad mid/upper level longwave trough continues to dominate the weather pattern across the U. The base of this trough has made it just far enough south to nudge the strong 500 mb subtropical ridge to our SE and enable a cold front to move through far SE Florida early this morning. Tonight/Friday morning will have the coolest temperatures with forecast lows in the lower 50s across Glades and Hendry counties, mid to upper 50s from western Palm Beach County to the Naples area, and lower to mid 60s east coast metro.
A reinforcing blast of cold air is approaching, as a cold front will truck from the Central Plains to the Mid South by this time tmrw. WPC paints spotty trace amounts upwards to just shy of an inch, mainly across our north, and we think that is reasonable with probably a half inch dusting on mainly grassy or elevated areas our primary expectation with this low chance pop event. Highs will range from the upper 20s northwest, to upper 30s southeast, with the northwest half of the FA remaining AOB the freezing mark.
MM/25 (Now through Friday) Broad upper level troughing remains across the region through the end of the week. Light surface winds out of the north generally 5mph or less will be present tonight thanks to high pressure settling into the region. Given the trend for sub-freezing temperatures across coastal communities in recent forecast guidance, have opted to expand the freeze warning to include all coastal areas of southwestern AL and the FL panhandle in addition to the inland coastal counties from midnight tonight through 8am Friday morning. Clear, dry weather prevails through Friday with afternoon highs slightly "warmer" in the middle to upper 50's.
(This evening through Friday) Current surface analysis shows the arctic cold front currently in the northern Texas Panhandle and is forecast to enter the northern portion of the CWA around 02z this evening. Strong cold air advection behind the front will lead to temperatures in the low 20s in the northwestern zones and the mid to upper 20s elsewhere tonight. The influx of colder air and persistent cloud cover will keep afternoon highs ranging from below freezing in the southwestern Texas Panhandle to the mid to upper 30s in the Rolling Plains and South Plains.
High pressure building into the region following yesterday's cold front will continue filtering a cool, dry air mass into the region over the next couple days, with below normal temps. 10-15 degrees cooler than normal in places particularly along and north of the I-4 corridor. Fri afternoon highs warm into the low 60s north to the mid 70s south. High pressure building into the state from the north will continue filtering in a drier airmass under breezy north to northeast winds, with relative humidity values approaching critically low levels this afternoon and Friday afternoon over the Nature Coast.
255 PM CST Thu Nov 17 2022 18Z surface data has low pressure over southern Lake Superior. A front ran south from the low through eastern Iowa and into northern Oklahoma. Dew points were in the 20s from the Great Lakes and Ohio Valley into the lower Mississippi Valley with single digits and teens across the Plains.
1121 AM CST Thu Nov 17 2022 (Today through Friday afternoon) Satellite this morning is showing cloud cover across the entirety of the CWA that is gradually moving east as an upper trough moves across New Mexico. An amplifying West Coast ridge and another trough moving across the Central Plains will push a cold front into the Permian Basin Friday morning. Have stayed close to ensemble NBM guidance with this forecast though am wary that temps could be a bit colder if the higher resolution of the NAM in the lower levels does a better job of capturing the surface cold pool.
1115 AM EST Thu Nov 17 2022 With building cold high pressure settling over the forecast area skies are now clear with only a few lingering low clouds that are rapidly dissipating over southwest Virginia. The cold temperatures in the 20s early this morning are only slowly warming above freezing as north to northwest winds continue to bring in cold air into the region. This should be short lived however, and we should see clearing skies after 12Z behind the exiting trough. The rest of the day will feature building high pressure providing mostly clear skies and chilly temperatures, with highs mainly from the upper 30s to mid 40s. Clear skies and light to calm winds tonight will allow temps to drop into the lower to mid 20s tonight.
553 PM CST Thu Nov 17 2022 As broad mid level troffing continues across much of the CONUS, much below average temperatures will continue in the short term. Impulses of energy within the trof will be the impetus behind additional surges of arctic air sweeping into the PAH forecast area. An elongated area of high pressure will reside just south of our region Fri/Fri night, keeping some semblance of a pressure gradient going. A second dry surface fropa late Sat/Sat eve should result in the center of high pressure being over us early Sun. High pressure just west of the PAH forecast area will move overhead late in the weekend.
905 PM EST Thu Nov 17 2022 A cold front moves through the area overnight into Friday morning, bringing snow showers to the area. High pressure moves in over the weekend and temperatures plummet with overnight lows in the teens. Clearing should not last too long as an approaching cold front encroaches from the northwest toward start of the rush hour timeframe. Any snow showers that do occur around the start of rush hour could quickly lead to slick roads since temperatures will be below freezing for the morning. West winds around 15 MPH with gusts up to 25 MPH, which will drop wind chill readings down into the teens, despite the daytime highs in the low 30s.
A cold pattern prevails through this weekend as an elongated trough remains over the Midwest and Northeast. Snow showers have pretty much dissipated as the wind direction has shifted more southwest as ridging builds from the west and dry air feeds into the dendritic growth zone (DGZ).
523 PM CST Thu Nov 17 2022 (This evening through Friday) The main headline will remain another round of freezing temperatures across the area for tonight. In fact, another cold front will bring some more cold air across the region on Friday.
611 PM CST Thu Nov 17 2022 (This evening through Friday night) Cold front will continue to move south across the rest of the Panhandles this afternoon. Some flurries will be possible across the area as the cold front squeezes out what moisture the atmosphere has in it. Freezing drizzle would not be out of the question, mainly in the west for a brief period overnight. But the cold air will only deepen during the day Friday in which the freezing drizzle if any should end and only flurries remain.
330 PM CST Thu Nov 17 2022 As broad mid level troffing continues across much of the CONUS, much below average temperatures will continue in the short term. Impulses of energy within the trof will be the impetus behind additional surges of arctic air sweeping into the PAH forecast area. An elongated area of high pressure will reside just south of our region Fri/Fri night, keeping some semblance of a pressure gradient going. A second dry surface fropa late Sat/Sat eve should result in the center of high pressure being over us early Sun. High pressure just west of the PAH forecast area will move overhead late in the weekend.
A cold front will bring increased north to northeast winds to northeastern Nevada Friday although no snow is expected.
Friday night will be another cold one with lows in the teens and wind chills in the low single digits and may even fall below zero. Could start to see the leading edge of light snow from the weekend system creep in overnight Friday into our northwestern counties with a ripple of mid-level vorticity ahead of the main trough.
323 PM PST Thu Nov 17 2022 A cold frontal passage this evening will allow for a return of frigid temperatures through the weekend, along with gusty easterly winds for the Sierra crest. Temperatures as of 1 PM are running generally 2 to 8 degrees warmer than this time yesterday, courtesy of weak high pressure aloft coupled with prevailing light winds. The brief warming trend will come to an end as an upper trough and attendant dry, cold front arrive to the region late this evening, slowly advancing southward during the overnight hours.
18Z surface data has low pressure over southern Lake Superior. A front ran south from the low through eastern Iowa and into northern Oklahoma. Dew points were in the 20s from the Great Lakes and Ohio Valley into the lower Mississippi Valley with single digits and teens across the Plains.
533 PM CST Thu Nov 17 2022 (This evening through Friday) Current surface analysis shows the arctic cold front currently in the northern Texas Panhandle and is forecast to enter the northern portion of the CWA around 02z this evening. Strong cold air advection behind the front will lead to temperatures in the low 20s in the northwestern zones and the mid to upper 20s elsewhere tonight. The influx of colder air and persistent cloud cover will keep afternoon highs ranging from below freezing in the southwestern Texas Panhandle to the mid to upper 30s in the Rolling Plains and South Plains.
Temperatures have fallen into the upper 20s to lower 30s, well on their way to the lower to middle 20s for overnight lows.
(Tonight) Cold high pressure situated over the Southern Plains was bringing a NW flow over the region. An upper level block over the European region was helping to delay a relaxation of the North American trough. Lows should cool into the low/mid 20s with light winds. This said, a few spots could chill to around 20, and locations near large bodies of water in the lower 30s. A risk of patchy fog/freezing fog cannot be totally ruled out.
Clear skies overnight will allow lows to get down to the lower 20s in most locations. Dry cold front moving through Friday. Temperatures should be at least as warm as today and where winds pick up a few degrees warmer. By Friday night a cold front should be nearly clear of our area to the east, followed by high pressure filling in behind this front.
We continue to see a ridge near the west coast with a broad trough across most of the CONUS.
215 PM MST Thu Nov 17 2022 Western fringe cold air mass extension of the Hudson Bay Low pressure system is already pushing into northeast Montana this afternoon and will continue to strengthen through overnight tonight. Friday night, an amplified ridge of warmer high pressure Washington and Oregon begins to push our Hudson Bay low pressure further to the east.
518 PM CST Thu Nov 17 2022 (Tonight) Cold high pressure situated over the Southern Plains was bringing a NW flow over the region. An upper level block over the European region was helping to delay a relaxation of the North American trough. Lows should cool into the low/mid 20s with light winds. This said, a few spots could chill to around 20, and locations near large bodies of water in the lower 30s. A risk of patchy fog/freezing fog cannot be totally ruled out.
629 PM EST Thu Nov 17 2022 A cold front moves through the area overnight into Friday morning, bringing snow showers to the area. High pressure moves in over the weekend and temperatures plummet with overnight lows in the teens. As this cold front begins to work into the forecast area around midnight, clouds thicken and snow showers move in from west to east. West winds around 15 MPH with gusts up to 25 MPH, which will drop wind chill readings down into the teens, despite the daytime highs in the low 30s.