Aikyam-Lab/Synoptic-Bench huggingface dataset:
510 AM EST Thu Feb 23 2023 Winds will begin to increase during the day today as a cold front will pass through the area during the afternoon. The warm front has lifted through the area this morning as southerly flow has begun across the area. As the low remains to the northwest, the Upper Ohio River Valley will experience a tightening sfc gradient and some mixing, enhanced by strong sfc warm advection. High pressure will build in from the west Friday underneath quasi-zonal flow aloft. Have mentioned this in the HWO but only in the higher elevations.
Temperatures will be cooler by Friday, returning to near seasonal normals. This Evening/Tonight Currently this afternoon, the region is in a southwesterly flow pattern aloft with a potent low pressure system to the north and its cold front near the Mississippi River. Overall, coverage will be minimal due to lacking moisture and increasing MSLP with the main difference being a shift in wind direction, increased cloud cover, and cooler temperatures. Friday On Friday, the front will remain to our south with northerly flow promoting cooler temperatures that will end up just being near normal. However, aforementioned high pressure, especially in northern portions of the area, will keep intensity and coverage of showers very limited in these areas.
309 PM EST Thu Feb 23 2023 A cold front will push east tonight, followed by high pressure tracking across the Great Lakes.
ECMWF/GEFS ensembles indicate a positive tilted trough/low over the Northwest Coast bringing zonal flow to our area this evening. It also indicates a slight neg tilted ridging pattern over the Rockies bringing more of a west/southwest flow overnight into Friday midday. A split flow pattern then occurs as this trough and low move south with the low breaking off from the main flow through the day Friday.
A cold front will continue to slowly sag southeast across the Mid-South through this evening. Much cooler air will settle in behind the front overnight with temperatures falling into the 30s and 40s areawide. Expect cooler temperatures on Friday, but the aforementioned front will surge back northward over the weekend and stall across the area.
Typical cold spots like Butte, Seeley Lake and Polebridge will experience dangerous cold temps down to 25 below zero.
1120 AM CST Thu Feb 23 2023 (Today through Friday afternoon) Much calmer conditions are expected to end the week following the high wind event yesterday. The High Wind Warning continues through this morning. Attention then turns north to a backdoor cold front that will move into the area Friday morning. Winds will become more easterly across the Permian Basin helping to usher in a much cooler airmass.
Amounts will be light, but the potential is there for heavier bursts as some of the higher resolutions are hinting showers (at least embedded showers) are possible vs more steady precipitation. We will eventually see winds switch to southerly across the higher elevations and also gap- type winds across the Teton Valley and along the Snake Plain from Blackfoot westward. Wind chills should be warmer tonight, but there will still be spots along the Montana border and across portions of the central mountains that will drop from -20 to -25.
155 PM CST Thu Feb 23 2023 Winds will become lighter tonight and Friday, as high pressure builds into the upper Midwest. The cold front has cleared southeast IL early this afternoon. Cloud trends will impact overnight lows as Arctic high pressure builds into the northern Plains. The airmass will support lows in the mid teens to mid 20s from NW to SE, but again much will depend on extent of cloud cover with cloudier locations likely staying a few degrees warmer.
Strong ridging over the western Atlantic will persist, fueling the continued period of well above normal temperatures. Record high temps will once again be possible today, as afternoon temps reach the low to perhaps even mid 80s in some areas.
(This evening through Friday) The cold front has pushed through most of the FA with the exception of the far southwestern South Plains. The cold front will push through the rest of the FA by the late afternoon/early evening and will help to cool overnight lows into the 20s area wide. There will be little force in trying to push the cold front out of the region through tomorrow. Aside from the cooler temps, the overall pattern will be quiet.
While the warmer temps may seem like a good thing for melting some ice off the power lines and trees, when combined with the stronger/gusty winds it could also potentially introduce additional hazards and outages related to falling ice chunks. - Tranquil weather this weekend - A high pressure ridge will build in this weekend and bring fair wx with seasonable temperatures.
1103 AM CST Thu Feb 23 2023 (Today through Friday Night) Sfc cold front is making its way into western parts of the state early this morning and will eventually traverse the entire area by this evening.
Leaned toward the lower end of guidance for minimum and maximum temperatures tonight and tomorrow. Tonight's lows will range from the teens in northwest Oklahoma to the lower 30s in southeast Oklahoma (where cloud cover will limit radiational cooling). On the northern fringe of precipitation, there's a low chance temperatures will be low enough for light freezing rain.
Across the weekend, a transient period of ridging aloft will begin working into the region within this flow pattern.
A cold front is bisecting the forecast area this afternoon and will sweep east across the rest of the region by late day. Dry conditions will continue as a strong area of high pressure over the northern Plains builds into the area. Potential is there for stratus to fill in across much of the northern forecast area through early evening before diminishing as the high builds in. The high will maintain dry conditions on Friday with winds veering from northerly to E/NE through the day.
Low pressure was near Detroit and tracking eastward, while strong high pressure was centered in Alberta. Friday: Mostly cloudy with highs in the lower 20s nw to lower 30s se.
Conditions will improve all around later on this afternoon and evening as a high pressure system moves in, decreasing the winds and blowing snow potential. High pressure will settle in over the area this afternoon, which will then bring an end to the strong winds. The high will remain over the area tonight and Friday. Much colder air will accompany the high, and in conjunction with very cold temperatures, will see bitterly cold wind chills (-20 to -45) develop tonight into Friday morning.
(The rest of this afternoon and Tonight) Consistent warm advection atop the low level frontal boundary as led to a persistent zone of rain/sleet showers across southeast Oklahoma and northwest Arkansas this afternoon. However, surface temps remain above freezing in these areas, so no impacts are expected through this evening as any frozen precip that falls will quickly melt. More rain/sleet/freezing rain mix will be possible, especially within some of the heavier showers. Impacts again appear to be low, though some locations across southeast Oklahoma could dip below freezing for a time and some slick spots will be possible on the roads by morning.
A mid level pressure ridge axis continues to retrograde westward into the afternoon, keeping the dry and unseasonably hot forecast on track.
An upper level low off the Pacific Northwest will dive down the West Coast, bringing scattered snow showers to the region through tomorrow.
If we're going to squeeze out one more degrees for a new monthly record, we're going to have to do it soon, as a long-awaited cold front has almost made it to Clarksville. Although the cold front won't bring freezing temperatures to Middle Tennessee, it will cool us off considerably. Tomorrow's highs will actually be several degrees cooler than this morning's lows. POP's look to return in earnest by tomorrow as the aforementioned cold front becomes quasi-stationary to our south and showers begin to form on the cool side of the front.
High pressure builds in from the west tonight with a bitter start to Friday, Wind Chill Advisories have been issued for the MN counties.
Reimer Light snow was gradually diminishing from the southwest to northeast overnight as an inverted trough continues to lift off to the north and east into the Dakotas. A weak disturbance lifting into the region from the southwest will bring snow showers to the southwest mountains, and light snow showers or flurries to the lower elevations over the west into the evening. Winds start to increase over western areas later in the day as ridging builds to the west.
223 PM EST Thu Feb 23 2023 A cold front will pass over the region tonight, bringing a modest cooldown, though temperatures will remain unseasonably warm for Friday.
Lows are expected to be in the low 60s for NE FL, with areas around the St. SE GA inland areas will see Lows mainly around the mid 60s with coastal areas seeing Lows near the low 60s.
Deep mid to upper level ridging continues to persist just off the southeast coast of mainland Florida.
(This evening through Friday) A cold front has continued to bring cooler conditions across the area today, especially across the Big Country.
1242 PM EST Thu Feb 23 2023 A cold front approaching from the west will result in falling temperatures this afternoon toward Lake Michigan. A warm front will lift north today and bring milder weather this afternoon. Windy conditions are expected this afternoon behind the cold front; however, winds should remain below advisory level.
Any precipitation which develops before 00Z could be drizzle/freezing drizzle before the DGZ becomes saturated.
1208 PM EST Thu Feb 23 2023 Breezy, warm conditions today will be followed by much cooler temperatures tonight and Friday with the passage of a cold front. Breezy, warm conditions expected this afternoon as a warm front lifts north a cross the region and the BL mixes to around 850mb. A cold front will cross the region tonight, but precipitation will be minimal with limited moisture available. The biggest impact will be the drop in temperatures behind the front with apparent temperatures 40F to 50F cooler Friday morning than anticipated later this afternoon. High pressure will build in from the west Friday underneath quasi-zonal flow aloft resulting in dry but again, breezy conditions with deeper mixing and a relatively tight sfc pressure gradient.
Aloft, high pressure also centered off the FL east coast this morning gradually retrogrades west to over the central Gulf of Mexico by late Friday. Today, with the low through mid level southwesterly flow continuing to bring abundant Gulf moisture into the region, combined with the weak frontal boundary just to the north of our area, will result in some isolated showers at times, but most locations will remain rain- free. These slight rain chances will diminish tonight into Friday as ridging and more zonal flow aloft builds, and PWAT's slightly decrease. Regardless, high temperatures today will still be well above normal (by around at least 10 degrees) for most locations, approaching the low 80s for most locations.
(Tonight through Friday night) For the second day in a row, high temperatures across the Rio Grande Valley have approached record values, aided in part due to moderate southerly winds across the lower valley.
Deep mid to upper level ridging located around the southeast coast of mainland Florida continues to promote an extremely stable and dry profile with a PW of around 1 inch observed in this morning's sounding.
1122 AM CST Thu Feb 23 2023 (Today and tonight) The cold front will continue to make slow progress southward this morning.
Winds will shift to northerly by around midnight as high pressure moves southeastward from the High Plains. Flow aloft becomes more zonal tomorrow with the northern high pressure moving to the Great Lakes. Winds shift to northeasterly in the Quad State, bringing in cooler air with highs in the 40s to near 50. The cold front stalls out across Louisiana to Georgia. Height increases and a slight lifting northward of the cold front will broaden the coverage of slight chance rain showers tomorrow night with lows in the 30s.
553 PM MST Thu Feb 23 2023 Satellite and radar data indicate that a few bands of snow are slowly developing across the high country. Across the high country, snow showers will slowly wind down as drier air aloft works into the region.
207 PM MST Thu Feb 23 2023 Satellite and radar data indicate that a few bands of snow are slowly developing across the high country. Across the high country, snow showers will slowly wind down as drier air aloft works into the region.
524 PM CST Thu Feb 23 2023 Winds will become lighter tonight and Friday, as high pressure builds into the upper Midwest. The cold front has cleared southeast IL early this afternoon. Cloud trends will impact overnight lows as Arctic high pressure builds into the northern Plains. The airmass will support lows in the mid teens to mid 20s from NW to SE, but again much will depend on extent of cloud cover with cloudier locations likely staying a few degrees warmer.
Lows will be dropping into the lower teens to 20s below zero tonight, so even relatively light winds will produce those extremely bitter wind chills. The Wind Chill Advisory continues across the area outside of the high mountains through 11 AM tomorrow. Harlowton to Big Timber will also see gusty winds, though the NBM, which has generally been running on the higher side lately, keeps the speeds mostly under 55 mph.
312 PM CST Thu Feb 23 2023 The cold front that has been moving east through the CWA has exited the area, ushering in cooler temperatures and gusty northwest winds induced by a tight pressure gradient and boundary layer mixing.
645 PM EST Thu Feb 23 2023 A cold front will push east tonight, followed by high pressure tracking across the Great Lakes.
456 PM CST Thu Feb 23 2023 (Tonight through Friday night) The upper level pattern is expected to be quasi-zonal over the CONUS during the period, with a flat ridge over the Gulf of Mexico and an upper disturbance moving southward along the West Coast, per deterministic output. Long period and high amplitude swells persist (based on buoys 42019/42020) and decided to extend the High risk of rip currents through tonight. The High risk may persist Friday, yet will defer to future shifts to decide.
520 PM CST Thu Feb 23 2023 (This evening through Friday) A cold front has continued to bring cooler conditions across the area today, especially across the Big Country.
The longwave synoptic pattern continues with general troughing over the western states and ridging over the eastern states with a deep low pressure systems and ridges rolling through.
531 PM CST Thu Feb 23 2023 (This evening through Friday) The cold front has pushed through most of the FA with the exception of the far southwestern South Plains. The cold front will push through the rest of the FA by the late afternoon/early evening and will help to cool overnight lows into the 20s area wide. There will be little force in trying to push the cold front out of the region through tomorrow. Aside from the cooler temps, the overall pattern will be quiet.
(This afternoon through Friday night) A weak cold front has moved into the area this afternoon, stretching from the TX/NM state line south to the lower Trans Pecos. The western half of the CWA will be warmer where low clouds won't be present to hinder insolation. The low clouds will spread west some tomorrow night and there may be some light rain or drizzle developing as boundary layer relative humidities approach saturation.
519 PM CST Thu Feb 23 2023 (Tonight through Friday night) For the second day in a row, high temperatures across the Rio Grande Valley have approached record values, aided in part due to moderate southerly winds across the lower valley.
(Tonight through Friday night) A weak cold front has moved into the area this afternoon, stretching from the TX/NM state line south to the lower Trans Pecos. The western half of the CWA will be warmer where low clouds won't be present to hinder insolation. The low clouds will spread west some tomorrow night and there may be some light rain or drizzle developing as boundary layer relative humidities approach saturation.
There are some signals in the model data that precipitation could spread farther north than currently forecast, whether in the form of showers or drizzle/freezing drizzle.
546 PM CST Thu Feb 23 2023 The cold front that has been moving east through the CWA has exited the area, ushering in cooler temperatures and gusty northwest winds induced by a tight pressure gradient and boundary layer mixing.
751 PM CST Thu Feb 23 2023 Winds will become lighter tonight and Friday, as high pressure builds into the upper Midwest. A subtle low level trough is moving south across southern Wisconsin into eastern Iowa and flurries are associated with this feature. The cold front has cleared southeast IL early this afternoon. Cloud trends will impact overnight lows as Arctic high pressure builds into the northern Plains. The airmass will support lows in the mid teens to mid 20s from NW to SE, but again much will depend on extent of cloud cover with cloudier locations likely staying a few degrees warmer.
However the snow showers will gradually taper off from mid to late morning as h8 temps already begin to moderate and sfc ridging builds in.
310 AM EST Fri Feb 24 2023 Mainly dry weather and below average temperatures are expected today behind an exiting cold front.
Near the surface, a broad area of high pressure is shifting east across the Northern Plains into the Upper Midwest. Tranquil conditions will continue throughout the period as weak ridging aloft builds in from the Southern High Plains northwestward into the Colorado Rockies while an extremely dry air mass dominates the high plains of western Kansas.
1133 PM CST Thu Feb 23 2023 Winds will become lighter tonight and Friday, as high pressure builds into the upper Midwest. A subtle low level trough is moving south across southern Wisconsin into eastern Iowa and flurries are associated with this feature. The cold front has cleared southeast IL early this afternoon. Cloud trends will impact overnight lows as Arctic high pressure builds into the northern Plains. The airmass will support lows in the mid teens to mid 20s from NW to SE, but again much will depend on extent of cloud cover with cloudier locations likely staying a few degrees warmer.
The snow in the urban corridor and northeast plains should diminish by midnight, but persistent chance will linger in the high country. Satellite and radar data indicate that a few bands of snow are slowly developing across the high country. Across the high country, snow showers will slowly wind down as drier air aloft works into the region.
Currently - A strong deep layered ridge is centered across South Florida and the Keys this evening. Meanwhile, the surface Atlantic ridge extends westward across Florida and into the Gulf of Mexico. Stable conditions are in place due to the deep layered ridge. A ridge across the Florida Peninsula will maintain gentle to moderate east to southeasterly breezes through the overnight period.
1039 PM CST Thu Feb 23 2023 (Tonight through Friday night) A weak cold front has moved into the area this afternoon, stretching from the TX/NM state line south to the lower Trans Pecos. The western half of the CWA will be warmer where low clouds won't be present to hinder insolation. The low clouds will spread west some tomorrow night and there may be some light rain or drizzle developing as boundary layer relative humidities approach saturation.
333 AM EST Fri Feb 24 2023 High pressure will build east into the Great Lakes and Ohio Valley today.
1053 PM CST Thu Feb 23 2023 (Tonight through Friday night) For the second day in a row, high temperatures across the Rio Grande Valley have approached record values, aided in part due to moderate southerly winds across the lower valley.
1108 PM CST Thu Feb 23 2023 A deep, positively-tilted trough is situated over the western CONUS with the subtropical ridge building over the FL peninsula. Weak mid-level ridging extends northwest through the Central Plains which led to very warm temperatures across the Mid-South again today. However, a cold front is moving through the CWA at this time and will provide much different temperatures tomorrow. Temperatures will be on the order of 20-30 degrees cooler tomorrow with afternoon highs ranging from the upper 40s to mid 50s in most areas.
1057 PM CST Thu Feb 23 2023 The cold front that has been moving east through the CWA has exited the area, ushering in cooler temperatures and gusty northwest winds induced by a tight pressure gradient and boundary layer mixing.
(Today) A cold front is bisecting the forecast area this morning, likely draped from northeast to southwest across portions of Jackson, Marshall, and Cullman counties. By daybreak, the front will have cleared northeast Alabama and in its wake a drier and cooler airmass. Post-frontal dewpoints have already dropped into the low to mid 40s, a stark contrast to the last few days of 60s dewpoints. Temperatures this afternoon will also be nearly 20 degrees cooler than yesterday with highs topping out in the upper 50s to lower 60s, which is actually near climatological norms.
929 PM CST Thu Feb 23 2023 A deep, positively-tilted trough is situated over the western CONUS with the subtropical ridge building over the FL peninsula. Weak mid-level ridging extends northwest through the Central Plains which led to very warm temperatures across the Mid-South again today. However, a cold front is moving through the CWA at this time and will provide much different temperatures tomorrow. Temperatures will be on the order of 20-30 degrees cooler tomorrow with afternoon highs ranging from the upper 40s to mid 50s in most areas.
Atmosphere dries out quite a bit, so will leave PoPs out for all locations, expect for some light snow showers over the high county today.
Gusty east to southeast surface winds persisted through the day, blowing from high pressure centers in eastern Idaho and western Wyoming toward low pressure in central Oregon. Also, afternoon temperatures will be around 10 degrees warmer. The cold upper level low pressure system which hovered off the Oregon coast today, generating scattered generally light flurries across our area, is moving south down the coast and will be off California on Friday, leaving our area under a weak high pressure ridge with partly cloudy skies.
1052 PM CST Thu Feb 23 2023 (Tonight through Friday night) The upper level pattern is expected to be quasi-zonal over the CONUS during the period, with a flat ridge over the Gulf of Mexico and an upper disturbance moving southward along the West Coast, per deterministic output. Long period and high amplitude swells persist (based on buoys 42019/42020) and decided to extend the High risk of rip currents through tonight. The High risk may persist Friday, yet will defer to future shifts to decide.
Amid oppressive ridging (which I shall go into more detail in a bit), temperatures have struggled to sag into the mid to upper 70s, certainly more in line with late Spring or Summer, rather than February. The ridge centered east of the Florida Peninsula will meander west to east, resulting in variable winds throughout the week. In addition, the potentially historic ridge will certainly hinder any frontal push through the island chain.
Upper-level ridging will continue to dominate the weather pattern through the weekend. Look for afternoon highs ranging from the middle 80s to the lower 90s in interior central Florida.
High pressure continues to build in from the west on Friday increasing subsidence over the Upper Midwest. All of this in tandem with the high building overhead will gradually diminish the LES from west to east with light snow and lingering flurries over WNW snowbelts possible late on Friday.
Much cooler today under cloudy skies. High pressure will move across the lower Great Lakes with northerly flow continuing. This northerly flow will certainly keep conditions cooler today along with the expected cloud cover.
503 AM CST Fri Feb 24 2023 High pressure moving overhead this morning weakens and retreats east today.