Aikyam-Lab/Synoptic-Bench huggingface dataset:
/issued 325 AM CST Fri Feb 5 2021/ A weak cold front that moved into the area yesterday has pulled up stationary along the Pecos River valley this morning. A weak trough will be approaching from out of the Rockies later today causing pressure falls that will help pull the front back east during this afternoon; however, it will likely be too late to prevent the warmth that was seen yesterday. The trough will bring another weak cold front to the area causing breezy northerly winds and keeping temperatures near normal for another day.
308 AM CST Fri Feb 5 2021 Cold front moved through the region last night and exited the south central coast this morning as temperatures dropped and dew points are now in the 30s.
Light snow will develop within the high terrain near the CO border aft sunset then taper off aft 06Z as drier air surges into the area.
The first in a series of weak cold fronts will move through today.
325 AM CST Fri Feb 5 2021 A weak cold front that moved into the area yesterday has pulled up stationary along the Pecos River valley this morning. A weak trough will be approaching from out of the Rockies later today causing pressure falls that will help pull the front back east during this afternoon; however, it will likely be too late to prevent the warmth that was seen yesterday. The trough will bring another weak cold front to the area causing breezy northerly winds and keeping temperatures near normal for another day.
There will be northerly breezes this afternoon and evening for valleys with gusty north to east winds over Sierra ridges into Saturday.
This high is expected to push east this afternoon with winds shifting around to the southwest across the forecast area. Weak high pressure is building in behind the front and surface are diminishing across the Mid-South.
The cold front associated with the trough will continue to progress south across our area through this evening before stalling over north central Florida late tonight. Surface winds following the front will shift to be northwesterly, which will bring in cooler temperatures tonight. Overnight lows are expected to be in the low-to-mid 40s in SE GA and upper 40s and lower 50s in NE FL. The stalled boundary to the south will lift slightly north as a weak warm front and position itself near the Florida-Georgia border. Forecast highs are in the 50s for SE GA, 60s for most of NE FL, and in the low-to- mid 70s for our southernmost FL counties.
A large trough at 500mb will continue to dominate the weather picture through the period. A ridge of high pressure extending across central SD early this morning will build across the entire area today through Saturday.
At the surface, the center of high pressure will move to the east turning the low level flow to the southeast. A cold front will move through the area during the day Saturday. A few places in the Hill Country could drop to freezing, but a widespread freeze is not likely.
(This evening through Saturday) Dry weather will continue tonight into Saturday, with a weak cold front moving across the area by Saturday afternoon. The front will bring gusty north winds to the area tomorrow, but skies will be sunny, with afternoon highs ranging from the lower 60s across Big Country, to the mid and upper 70s elsewhere across the forecast area.
TFJ An Arctic cold front will move south through the forecast area today and tonight and bring bitter cold airmass into the region for a long stay. Arctic high pressure moves in during the day on Saturday with dry and cold weather in most areas.
Surface front over the coastal waters will stall and meander until the next cold front sweeps into the waters later Saturday afternoon or evening. Cold front is now poised offshore, with NE winds 10-15 KT at the southern terminals and less than 10 KT at AEX. /issued 308 AM CST Fri Feb 5 2021/ Cold front moved through the region last night and exited the south central coast this morning as temperatures dropped and dew points are now in the 30s.
Surface ridging across the area today helping to clear sky cover over the Tennessee valley and southern Appalachians.
Arctic high pressure will begin pushing into the northern Plains tonight. With a deep low pressure near the Hudson Bay the gradient between the low pressure and building Arctic high pressure will maintain a blustery northwest wind tonight and tomorrow.
1037 AM EST Fri Feb 5 2021 A cold front and showers will continue to work through the region today, with drier air pushing in by late afternoon/evening. A weak cold front will work through the forecast area (FA) today and eventually stall to our south late this afternoon and tonight. Winds are expected to gradually veer to light NE tonight as high pressure settles into the Mid-Atlantic region. A broad upper trough crossing the conus keep a southwest to west flow aloft over the region.
Weak high pressure is building into the region behind last nights precip. with scattered clouds and cooler temperatures. Prior discussion below: Today and tonight: Latest surface analysis had the cold front southeast of our CWA but anafrontal rain was still noted on local radar across the Interstate 59 corridor. The cold front is expected to stall near the Gulf coast this morning. In the wake of the cold front, temperatures will be cooler than normal today only topping out in the lower 50s at most locations. Temperatures tonight will be close to normal ranging from the lower 30s northeast to near 40 south.
Additionally, light snow showers will be possible across the high terrain near the NM/CO border through 06z.
338 PM EST Fri Feb 5 2021 Low pressure in the Great Lakes will provide light snow shower chances tonight. Saturday will be sunny, but chilly with high pressure.
SHORT TERM (Now through Saturday Night): A cold front is currently moving southeast through the lower Valley and will exit the CWA this afternoon. Northerly winds will usher in drier and cooler air to region this evening with temperatures briefly returning to seasonal norms and rain chances dropping off. Overnight temperatures will fall into the low 50s across the northern Ranchlands with upper 50s across the Lower Valley with winds becoming light to calm.
and eventually IFR by mid morning as the low levels moisten up. Weak high pressure is building into the region behind last nights precip. with scattered clouds and cooler temperatures. Prior discussion below: Today and tonight: Latest surface analysis had the cold front southeast of our CWA but anafrontal rain was still noted on local radar across the Interstate 59 corridor. The cold front is expected to stall near the Gulf coast this morning. In the wake of the cold front, temperatures will be cooler than normal today only topping out in the lower 50s at most locations. Temperatures tonight will be close to normal ranging from the lower 30s northeast to near 40 south.
129 PM CST Fri Feb 5 2021 High pressure situated over northern LA and MS will shift east across AL this evening. Low temperatures will dip into the lower 30s. As the impulse shifts into the ArLaTex region during the afternoon, an 8h low will move into northern MS with it's attendant warm front lifting northward to near the I-20 corridor by evening. As the low pulls east, temperature profiles will once again favor a mix or changeover to snow in southern TN and far north/northeast AL, particularly higher elevations.
Near the surface, a weak lee side trough of low pressure is anchored in eastern Colorado. As for temperatures, little change is expected to the general air mass across the high plains of western Kansas tonight. Look for lows generally in the 20s(F) to possibly the lower 30s(F) in south central Kansas. As a result of a cold front pushing south into western Kansas early Saturday, expect highs pushing the lower 30s(F) in central Kansas to the 40s(F) farther south/southwest.
Continued northwest flow will leave gusty winds and periods of snowfall across the higher terrain over the next couple of days.
If this does occur, surface temperatures will likely drop to near freezing with a fairly narrow band of snow accumulation possible. With that said, I did go ahead and add some minor snow accumulations across east-central Oklahoma, extending north to near Tulsa with higher amounts further northwest in the higher terrain across northwest Arkansas.
As of mid morning, the cold front stretches from Mobile Bay towards Atlanta, inching closer towards FL. A warmer night is in store compared to the previous few days, with lows in the mid to upper 50s. An approaching cold front to the area will increase moisture later today, with MVFR cloud cover possible for terminals north of KMCO after 00Z. (modified previous) High pressure over the SW Atlantic will be forced farther out to sea as a cold front moves into northern Florida later today. Pressure gradient should relax early this evening allowing winds to subside, but a brief period of northerly 15-20 kt winds across the Volusia county waters is expected behind the weakening cold front either late this evening or early overnight as it moves into central Florida.
/ISSUED Issued by National Weather Service Lake Charles LA/ The latest cold front push through last night into this morning with temperatures into the 50s acrs the area. The pattern in the atmosphere remains very progressive with a broad upper level low that spans from the west coast to the east coast. the progressive pattern will push through another cold front Saturday evening timeframe.
1045 AM CST Fri Feb 5 2021 Welcome to the first day of a long stretch of below normal temperatures across the Lower 48.
Saturday: Mid level trough will swing through later in the afternoon and evening. With the very cold airmass in place ratios will be on the high side.
Colder and drier air is situated to our east across central SD into ND with a slightly warmer and more moist air mass southwest of the boundary. As large scale ascent overspreads the region, enhanced frontogenesis along the low-to-mid-level baroclinic zone will support snow overnight tonight, beginning by mid-evening.
247 PM CST Fri Feb 5 2021 Upper level low pressure over eastern canada will continue to drive colder air into our area, and this will become a reality tonight as temperatures fall into the single digits above to single digits below zero across the area.
Throughout the short term period, a mid/upper-level trough will gradually migrate eastward from the southern Plains into the SE CONUS, supporting a low-level poleward mass flux across the Gulf of Mexico and associated increase in instability across the region. The mid/upper- level trough will support an increase in deep-layer westerly wind shear across South Florida (primarily the northern portions of the area) -- which combined with warm/moist air advection (increasing low-level instability) will support a conditional risk of strong showers/storms across the Atlantic waters overnight tonight into the early morning hours. By Saturday night a low pressure will have developed over the natural baroclinic zone of the northern Gulf of Mexico.
1138 AM CST Fri Feb 5 2021 The main forecast concerns will be snowfall amounts tonight into Saturday morning and the advancement of an arctic cold front. This arctic cold front will begin to move into the area this evening and should advance south and west of the area by Saturday morning. An upper trough is already established across the Northern and Central U. Behind the arctic cold front, models do differ on the location of the snowfall band. The highest snowfall totals to around 5 inches over much of Custer County. The forecast highs Saturday have trended down slightly to the upper 20s far southwest to the low teens northeast.
Saturday will feature sunshine but chilly temperatures as high pressure briefly visits.
1125 AM EST Fri Feb 5 2021 The afternoon will feature scattered flurries and slowly falling temperatures behind a cold front. Wind gusts of 25 to 30 mph will continue this afternoon, with gusts up to 40 in the higher elevations.
Highs will likely range in the low to mid 50s tomorrow with lows in the low to mid 40s tonight. VFR cigs have developed in the wake of the cold front with northerly winds around 10 to 15 knots.
High pressure is currently sitting off the east coast of Florida in the Western Atlantic, which is resulting in southeast to south winds for our area. As the high pressure lifts to the northeast this evening, winds will become light and variable.
1221 PM EST Fri Feb 5 2021 The afternoon will feature scattered flurries and slowly falling temperatures behind a cold front. Wind gusts of 25 to 30 mph will continue this afternoon, with gusts up to 40 in the higher elevations.
857 AM PST Fri Feb 5 2021 Weak offshore flow and high pressure aloft off the West Coast and will bring warming for today and Saturday.
Temperatures have already risen to the lower 70s after dipping down to the lower to mid 60s overnight. High pressure is currently sitting off the east coast of Florida in the Western Atlantic, which is resulting in southeast to south winds for our area. As the high pressure lifts to the northeast this evening, winds will become light and variable.
121 PM EST Fri Feb 5 2021 A cold front and showers will continue to work through the region today, with drier air pushing in by late afternoon/evening. A weak cold front will work through the forecast area (FA) today and eventually stall to our south late this afternoon and tonight. Winds are expected to gradually veer to light NE tonight as high pressure settles into the Mid-Atlantic region. A broad upper trough crossing the conus keep a southwest to west flow aloft over the region.
Will see another quiet night before winds pick up Saturday morning behind a cold front.
More significant cold front will stall out Saturday morning somewhere over eastern Colorado and could have lower clouds and some flurries behind it. Forecast temperatures look pretty good, a little cooler tonight, but then recovering tomorrow except for the northeast corner.
In addition, gusty north winds are expected along the coast and adjacent ridges through Saturday.
245 PM MST Fri Feb 5 2021 Deep trough is entrenched across the bulk of NOAM which I dare say is controlled by the Polar Vortex. The spine of the Canadian to Central US Rockies is in the tight thermal gradient of the trough aloft which is where the jet resides. This has peaked some snow rates over northwest Colorado with some decent dendritic dumpage going on over not only high terrain but also down into the lower elevations of the Yampa and White River Valleys. Temperatures have been lagging in the cooler northwest flow pattern. tomorrow looks like we approach normal on our way to warmer temperatures later in the weekend.
Temperatures are dropping quickly this evening under clear skies and with dewpoints down in the 20s, with current readings already in the low to mid 30s.
As of 21Z Friday afternoon, a deep midlevel trough was positioned across the Great Lakes region with northwesterly flow across the forecast area. Generally the highest amounts are expected along the Nebraska border and closest to the vort max. 3", again with the highest amounts along the NE border.
455 PM MST Fri Feb 5 2021 Deep trough is entrenched across the bulk of NOAM which I dare say is controlled by the Polar Vortex. The spine of the Canadian to Central US Rockies is in the tight thermal gradient of the trough aloft which is where the jet resides. This has peaked some snow rates over northwest Colorado with some decent dendritic dumpage going on over not only high terrain but also down into the lower elevations of the Yampa and White River Valleys. Temperatures have been lagging in the cooler northwest flow pattern. tomorrow looks like we approach normal on our way to warmer temperatures later in the weekend.
538 PM CST Fri Feb 5 2021 (This evening through Saturday) Dry weather will continue tonight into Saturday, with a weak cold front moving across the area by Saturday afternoon. The front will bring gusty north winds to the area tomorrow, but skies will be sunny, with afternoon highs ranging from the lower 60s across Big Country, to the mid and upper 70s elsewhere across the forecast area.
Along with the snowfall, some gusty winds are expected over the higher terrain, with gusts of around 50 mph possible near Monarch Pass through tonight and into tomorrow. Seasonably cool temperatures will remain this afternoon with highs in the upper-40s, cooling down into the low 20s tonight. Behind the front, temps tomorrow are expected to be just a bit warmer as some of the cloud cover recedes bringing high temps over parts of the east plains into the lower 50s.
Precipitation has been light and generally a few hundredths of an inch or less thanks to weak energy riding southward along the eastern periphery of the upper ridge.
The vsbys/ceilings will then start improving Sat morning as the low level flow becomes more NWrly allowing for drier air to move into the region. /issued 243 PM CST Fri Feb 5 2021/ SHORT TERM (Now through Saturday Night): A cold front is currently moving southeast through the lower Valley and will exit the CWA this afternoon. Northerly winds will usher in drier and cooler air to region this evening with temperatures briefly returning to seasonal norms and rain chances dropping off. Overnight temperatures will fall into the low 50s across the northern Ranchlands with upper 50s across the Lower Valley with winds becoming light to calm.
Nearly the entire North American continent is under the influence of a deep/anomalously cold and broad upper level trof, including northwest flow aloft over this CWA. This could keep overnight lows (and forecast wind chills) tonight and Saturday night a bit warmer than forecast.
Precip chances will also be on the increase, with MVFR vsbys developing in -RA, or -RASN from late morning trough mid afternoon across the ERN OK sites, and after 18z across the NW AR sites. If this does occur, surface temperatures will likely drop to near freezing with a fairly narrow band of snow accumulation possible. With that said, I did go ahead and add some minor snow accumulations across east-central Oklahoma, extending north to near Tulsa with higher amounts further northwest in the higher terrain across northwest Arkansas.
Latest surface analysis places a low pressure system over Ontario, Canada with a cold front extending down along the eastern seaboard. Another cold front was analyzed from northwest Nebraska extending southeast into north central Missouri. The upper level pattern is dominated by a large trough over much of the United States. High pressure will slide east overnight. Meanwhile, a low pressure system will begin to organize to the lee side of the Rockies and eject across the Southern Plains and ride along the Gulf Coast tomorrow afternoon. This will help pull the cold front south into northern portions of the Mid-South. Light rain showers will begin to move into the area as early as tomorrow morning with the main line of rain arriving tomorrow night with the cold front.
431 PM MST Fri Feb 5 2021 Broad, large scale upper level trough extended coast to coast over the Lower 48 this afternoon. Forecast concerns will deal with a couple of strong wind episodes for the wind-prone areas, as well as accumulating snowfall over the mountains and portions of the high plains as the large scale trough dominates this weekend.
331 PM CST Fri Feb 5 2021 As of 21Z Friday afternoon, a deep midlevel trough was positioned across the Great Lakes region with northwesterly flow across the forecast area. Generally the highest amounts are expected along the Nebraska border and closest to the vort max. 3", again with the highest amounts along the NE border.
In addition, gusty north winds will be possible along the coast and adjacent ridges through Saturday.
250 PM MST Fri Feb 5 2021 Broad, large scale upper level trough extended coast to coast over the Lower 48 this afternoon. Forecast concerns will deal with a couple of strong wind episodes for the wind-prone areas, as well as accumulating snowfall over the mountains and portions of the high plains as the large scale trough dominates this weekend.
An upper level ridge remains situated off the West Coast and continues to promote dry, tranquil weather conditions for the Southwest. Little change is expected to our current weather situation as clear skies and near to slightly above normal temperatures in the low to mid 70s continue through the weekend. Morning lows through the weekend will remain close to seasonal normals as temperatures bottom out in the low to mid 40s each morning.
High pressure will remain off to the west keeping a decent gradient in place which will keep the wind up tonight into Saturday, from 8 to 15 mph with higher gusts.
832 PM EST Fri Feb 5 2021 Low pressure in the Great Lakes will provide light snow shower chances tonight. Saturday will be sunny with high pressure.
143 PM PST Fri Feb 5 2021 Weak offshore flow and high pressure aloft off the West Coast and will bring warming for through Saturday.
Upper level low pressure over eastern canada will continue to drive colder air into our area, and this will become a reality tonight as temperatures fall into the single digits above to single digits below zero across the area.
200 AM EST Sat Feb 6 2021 Drier air has begun moving into the region as a cold front slides south of the area.
A strong cold front has cleared North-central Montana and is now moving through the Three Forks area as of this writing. RCG 1041 PM MST Fri Feb 5 2021 (06/06Z TAF period) Strong Canadian cold front continues to push southward through southwestern Montana with gusty north winds and periods of light snow.
Highs sunday afternoon will mainly be in the low to mid 50s across most of the interior, but upper 50s and even a few lower 60s near and along the coast.
A strong cold front has cleared North-central Montana and is now moving through the Three Forks area as of this writing. RCG 527 PM MST Fri Feb 5 2021 (06/00Z TAF period) Primary concern for this evening is a southward advancing Arctic cold front.
Upper ridge remains offshore with a short wave and jet approaching southern BC and the Pacific northwest this evening.
1239 AM EST Sat Feb 6 2021 A cold front will push through this evening, stalling offshore. The front will return north with widespread rain late Saturday into Saturday night as low pressure develops to our south. High pressure will bring dry weather late Sunday along with gusty winds.
935 PM PST Fri Feb 5 2021 Weak offshore flow and high pressure aloft off the West Coast and will bring warming for through Saturday.
1250 AM EST Sat Feb 6 2021 A cold front will push through this evening, stalling offshore. The front will return north with widespread rain late Saturday into Saturday night as low pressure develops to our south. High pressure will bring dry weather late Sunday along with gusty winds.
1037 PM EST Fri Feb 5 2021 An approaching front from the north and west will stall near I-4 tonight, before moving northward again as a warm front tomorrow. The pressure gradient over the local waters will slacken tonight as the high pressure system continues to push away, causing the winds to weaken slightly overnight. An approaching boundary from the north and west will stall across the area tonight, before lifting back northward as a warm front tomorrow.
This setup favors persistent northwest flow with lobes of bitter cold air that pass through as they rotate around the low pressure feature over southeastern Canada.
1049 PM CST Fri Feb 5 2021 (This evening through Saturday) Dry weather will continue tonight into Saturday, with a weak cold front moving across the area by Saturday afternoon. The front will bring gusty north winds to the area tomorrow, but skies will be sunny, with afternoon highs ranging from the lower 60s across Big Country, to the mid and upper 70s elsewhere across the forecast area.