Aikyam-Lab/Synoptic-Bench huggingface dataset:
446 PM MST Fri Jan 28 2022 Quiet weather is in store to begin the weekend as weak ridging builds in from our west. The warmer airmass will help bump tonight's temperature up some 5-15 degrees (depending on location) compared to last night, although most if not all of the plains will still remain firmly below freezing. The foothills and adjacent urban areas west of I-25 will be a touch milder owing to lingering breezy conditions and the higher elevation. Expect another very cold night for the high valleys with lows well into the negatives, but likely not as frigid as this morning. Breezy conditions will return to the mountains, Cheyenne Ridge, and NE plains, with gusts generally 25-35 mph (35-45 mph for the mountains).
Clear skies and VFR conditions will prevail through the entire period as high pressure maintains control. High pressure will settle overhead tomorrow, providing light and variable winds and clear skies through the end of the TAF period.
218 AM EST Sat Jan 29 2022 Snow will be winding down this morning as the upper level trough moves east of the area and into the Mid Atlantic region. Drier and colder air filters into eastern KY today as high pressure builds in. After starting this morning in the lower to middle teens, afternoon high temps will only reach the upper 20s.
Upper flow will continue to be out of a general northwesterly direction through this evening before slight upper ridging moves overhead ahead of an approaching upper low. Upper ridging along with westerly surface winds will allow highs to warm into the low/upper 60s this afternoon. Overnight lows will still be chilly, low 20s to low 30s, thanks to low dewpoints, but temps will still be slightly warmer than previous nights.
A dry frontal passage early Saturday will see winds shift to the west and usher in some warmer air from an upper ridge over the Rockies. There will still be a sharp gradient from east to west with cooler temps expected to persist over snow-covered ground. The winds and warmer temperatures will combine to produce high to very high fire danger south of Pierre. With high pressure briefly over the east late Saturday night, there could be some early morning fog in light winds, especially over the James Valley where llm could be abundant after a day of melting snow.
140 AM EST Sat Jan 29 2022 Mainly light snow lingers into Saturday morning, then arctic high pressure the rest of Saturday.
1001 PM EST Fri Jan 28 2022 Light snow will taper from north to south early tonight and pivot across the lower Susquehanna Valley before exiting Saturday morning.
319 AM EST Sat Jan 29 2022 Morning flurries will end today as high pressure builds in.
300 AM EST Sat Jan 29 2022 Discussion/Marine - A Few Light Snow Showers Tonight - Clouds will gradually increase today out ahead of a weak low pressure system that will bring some light snow showers mainly across our northern fcst area tonight where deeper moisture and some lift will develop.
1131 PM EST Fri Jan 28 2022 Snow will slowly taper off tonight behind a cold front. High pressure brings dry and cold weather Saturday.
1134 PM CST Fri Jan 28 2022 High pressure will move over the region overnight. SRLY winds will return for Sat afternoon as the high pressure moves east.
Interestingly, in many areas that didn't have much snow accumulate in grassy areas, those that saw it, had it accumulate on the roads, melt, then freeze as temperatures this evening quickly fell below freezing.
147 AM EST Sat Jan 29 2022 High pressure builds in for drier weather.
346 AM EST Sat Jan 29 2022 Current surface analysis shows earlier cold front has pushed well south and east of the area and is now draped across the Mid-Atlantic region SE into the Deep South. In its wake, high pressure currently centered over the lower MS Valley will gradually build into the area, gliding overhead today before pushing off to the east by tonight. Temperatures have plunged into the lower teens early this morning under mostly clear skies and deep northerly flow, with radiational cooling further exacerbated by our fresh snowpack.
An upper level trough will create scattered snow showers this evening with MVFR cigs/vsbys at times.
ridging and eastern U. troughing, although western U. troughing will take over for a short time mid- week.
High pressure over the Intermountain West remains the primary influence of weather conditions into Saturday. The system will move eastward Saturday as low pressure moves over the Desert Southwest.
N-NW winds 4-8 kt in the morning will eventually back out of the W and then S-SW late in the day as the center of high pressure shifts off the LA coast.
1018 PM EST Fri Jan 28 2022 Light snow will taper from north to south early tonight and pivot across the lower Susquehanna Valley before exiting Saturday morning.
1255 AM EST Sat Jan 29 2022 Light snow will taper from north to south early tonight and pivot across the lower Susquehanna Valley before exiting Saturday morning.
1023 PM MST Fri Jan 28 2022 06Z TAF CYCLE Upper ridge passing overhead with VFR through the TAF period. Another cold night is expected tonight as lows vary from below zero to the low 20s.
As of 1 AM: Water vapor imagery depicts the neutral tilted upper trough axis crossing the Appalachians, while a surface analysis shows intensifying low pressure off the NC coast, with a cold front shifting east of the area. Colder air filtering in behind the passing cold front will cause the precipitation to change over to all snow overnight. The lapse rates as the upper low crosses are quite impressive and the hi-res guidance consistently places the strongest omega right around the dendritic growth zone. A deep upper level trough will be along the East Coast on Saturday with a departing coastal storm moving toward New England.
1100 PM EST Fri Jan 28 2022 Light snow will taper from north to south early tonight and pivot across the lower Susquehanna Valley before exiting Saturday morning.
The low RH could lead to Elevated fire weather conditions in parts of the fa this afternoon.
BNA/MQY/CKV will have VFR (or improve to VFR shortly after 06Z) as dry high pressure moves into the area.
Water temperatures are in the lower 70s across the Florida Keys, which is near the 75th percentile for this time of year.
244 AM CST Sat Jan 29 2022 Upper level ridging over the western U.
148 AM EST Sun Jan 29 2022 Arctic high pressure will migrate across the Southeast this morning.
A ridge of high pressure will continue to be the dominant feature over the Northern Rockies today through tonight. The ridge is still anticipated to flatten on Sunday allowing for a few showers to move into the northwest Montana. The mountains will experience snow, but the valleys have the potential of a wintry mix of precipitation that includes freezing rain.
206 AM MST Sat Jan 29 2022 Current surface map place warm front across the eastern Dakotas with mild temperatures across the high plains. Upper Ridge over the Rockies/Northern Plains flattens this weekend, with warm, dry, breezy conditions.
A few snow showers and flurries will quickly diminish in the higher elevations. Gusty northwest winds with gusts over 20kts will continue through mid morning then diminish as surface ridging builds into the area.
Another cool morning as stagnant high pressure ridging begins to slowly break down. This will change over the next few days as the ridge deforms. An upper level trough axis with positive tilt, sweeps towards the area with a weak cold front arriving Sunday. Cold air advection (CAA) looks to be upstream as the warm airmass that has been in place for the past few days gets replaced by the in bound cold front.
554 AM EST Sat Jan 29 2022 Morning flurries will end today as high pressure builds in. Snow chances return Sunday with fast moving low pressure. An upper trough axis from wrn PA swd should continue to shift ewd today. The exception will be in the higher terrain of eastern Tucker county, where the advisory continues. Scattered snow showers are expected with the approach and passage of the trough, though a lack of deep layer moisture should limit coverage and accumulation of the snow.
119 AM PST Sat Jan 29 2022 Blocking high pressure will maintain dry and generally quiet weather through the upcoming week. A passing low pressure system and a cold front will bring increased winds with cooler temperatures to kick off February. Quiet, dry weather pattern will persist through the weekend as high pressure remains a fixture across the West. Only "entertainment" this weekend will be from increasing mid to high level cloudiness from a closed upper level low scooting across southern California today. Otherwise, no impacts are expected in the Sierra and western Nevada from the low passage. High pressure will weaken a touch in response to an inland trough dropping into the Pacific Northwest.
616 AM EST Sat Jan 29 2022 High pressure builds in for drier weather.
Dewpoints have dropped into the lower teens in most locations. Temperatures still remain in the lower to mid 20s with northerly winds between 5 and 10 mph with some higher gusts east of the I-65 corridor. Saturday will be a cold day, even in the afternoon, as highs are only expected to climb into the lower 30s in NE AL and the mid to upper 30s elsewhere. This westerly low level flow should bring somewhat warmer and more moist air back into the region this evening. However, lows will still drop into the lower to mid 20s in most locations.
/Issued 317 AM CST Sat Jan 29 2022/ Current water vapor analysis depicts a mid to upper level deep trough digging down through the Ohio River Valley all the way down into Florida. Currently this trough has much of the SE to include a large portion of Florida in Wind Chill Advisories or Freeze Warnings. Further west and upstream is a ridge sitting over the Pacific Northwest. Under that ridge high pressure sits over Utah and Nevada. Further southwest of there, off the coast of California, sits a split flow low pressure system. The FA sits under northwest flow between the ridge out west and the trough to the east.
532 AM CST Sat Jan 29 2022 As the warm frontal boundary continues trekking eastward, temperatures are rapidly rising behind it. With the aforementioned passing cold frontal boundary, winds will become breezy east today, especially in the James River Valley.
418 AM EST Sat Jan 29 2022 Light snow will taper from north to south early tonight and pivot across the lower Susquehanna Valley before exiting Saturday morning. The start of the weekend will be partly to mostly sunny but very cold and blustery with maxTs -15 to -25F below late January climo (highs in the low teens to around 20F).
Even with clear skies, afternoon highs will only get up into the low-50s to the east, whereas our western zones can expect to see highs in the low-60s.
This will bring warmer air and moisture back to the area.
529 AM CST Sat Jan 29 2022 (Today) Breezy southwest winds will develop today, resulting in much warmer afternoon temperatures.
SHORT TERM (Today through Sunday): 500 mb ridging will be building over southern TX ahead of a closed low moving east from the West Coast. As the ridge axis builds over the region, the current cool temps over the RGV will steadily warm. The warming temps will also be helped along by the increasing sunshine and the low level winds shifting around from the S-SE today and Sun. As the low level dewpoints start to rebound tonight into Sun, the combination of the increasing dewpoints and lighter surface winds will allow for some better potential for patchy early morning fog.
Temperatures at 850mb will climb to near 0C across far southeastern North Dakota, which could allow surface temps to approach the freezing mark with adequate mixing in the lower levels.
With the aforementioned passing cold frontal boundary, winds will become breezy east today, especially in the James River Valley.
Though we'll be in northwest flow, we'll see the western North American ridge make occasional pulses east, so we'll have some good ups and down with the temperatures.
412 AM MST Sat Jan 29 2022 The weekend will remain dry as ridging persists over the region. The well-advertised pattern change comes barreling through early in the week, as the H5 ridge finally breaks down. The initial push will be a system sweeping across Montana, dragging the first cold front into northern WY.
A closed low currently just offshore of the southern CA coast will move eastward today, centering over southern CA by this evening. This low will help to weaken the flat ridge that currently resides over NV. The low will also push cirrus clouds into much of central and portions of northern NV today. Tonight into Sunday the low over southern CA will clip southern NV and exit into AZ and NM, with the flat ridge remaining over northern and central NV through Sunday afternoon. Sunday evening and night trough energy will move into the Pacific NW.
Gusty northwest winds with gusts over 20kts will continue through mid morning then diminish as surface ridging builds into the area. Chattanooga Airport, TN 37 23 53 29 56 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 32 21 48 27 52 / 10 0 0 0 0 Oak Ridge, TN 34 21 48 27 51 / 10 0 0 0 0 Tri Cities Airport, TN 28 14 43 25 47 / 20 0 0 0 0 TN.
Valleys in Southwest Montana remain cooler with temperature inversions.
Ridge of high pressure will quickly shift eastward today, resulting in increasing southerly return flow. Thanks to the southerly flow and at least partial sunshine, high temperatures will be several degrees warmer than they were yesterday. A weak cold front will pass through the region on Sunday: however, it will be accompanied by little more than a shift in the wind and slightly cooler temperatures across the W/NW CWA.
417 AM MST Sat Jan 29 2022 Upper level high pressure builds into Colorado today, bringing clear skies and warmer temps to most locations. Still looking at fairly strong inversions this morning over interior valleys, and with limited mixing under the high, max temps will struggle, and cut back numbers several degf from NBM at usual cold spots (i.
Temperatures are in the low 20s across most of the area. Wind chill may dip to around 10 degrees across portions of west TN with most of the Midsouth in the low to mid teens.
There is a thin cirrus layer over parts of the area along with low clouds and fog/freezing fog, mostly in the Umpqua and Coquille basins. A strong upper level ridge is in place over the western US. This ridge will weaken and move east as a weak upper low moves through south of it through Southern California. A weak trough will move onshore Sunday afternoon. Until then, the stagnant pattern will persist over the area with mostly clear skies and night into morning low clouds and fog/freezing fog, mostly over the Umpqua and Coquille basins. The front associated with this trough will bring the only chance of precipitation over the area for the coming week.
733 AM EST Sat Jan 29 2022 Morning flurries will end by afternoon as high pressure builds in. Snow chances return Sunday with fast moving low pressure. No other changes were needed at this time, as the departing trough axis and building high pressure will lead to dry weather otherwise. The exception will be in the higher terrain of eastern Tucker county, where the advisory continues. Scattered snow showers are expected with the approach and passage of the trough, though a lack of deep layer moisture should limit coverage and accumulation of the snow.
449 AM CST Sat Jan 29 2022 As the warm frontal boundary continues trekking eastward, temperatures are rapidly rising behind it. With the aforementioned passing cold frontal boundary, winds will become breezy east today, especially in the James River Valley.
A second, much smaller area of light snow was falling as a result of cold, moist air from the lower Glakes flowing south and being lifted across the ridges of Cambria and Somerset Counties. The high temperature this afternoon will vary from around 20 degrees over the northern to near 30 degrees near the Mason/Dixon line.
549 AM EST Sat Jan 29 2022 Aviation - A Few Light Snow Showers Tonight - Clouds will gradually increase today out ahead of a weak low pressure system that will bring some light snow showers mainly across our northern fcst area tonight where deeper moisture and some lift will develop.
High clouds are spreading northward across the region around an upper low drifting toward the southern California coast. There is good model consensus in moving the low inland today and continuing it across the Desert Southwest area by Sunday. As the low moves inland today, we will see increased clouds overhead and high temperatures a few degrees lower than yesterday.
This will bring light winds and dry conditions in the low levels.
327 AM MST Sat Jan 29 2022 Axis of upper level ridging shifting from Idaho to western Montana but seeing this ridge flatten as it approaches.
418 AM MST Sat Jan 29 2022 Current surface map place warm front across the eastern Dakotas with mild temperatures across the high plains. Upper Ridge over the Rockies/Northern Plains flattens this weekend, with warm, dry, breezy conditions.
The high pressure will slide eastwards through the day and will move into the central Gulf tonight. This will usher in a southerly flow across the Texas coastline that will make temperatures slightly warmer tonight compared to last night with overnight lows in the upper 30s to low 40s. Expect another quiet day across the area on Sunday as upper level ridging strengthens with slightly warmer temperatures (highs in the upper 60s to near 70), though expect things to change starting Sunday night.
As the warm frontal boundary continues trekking eastward, temperatures are rapidly rising behind it. With the aforementioned passing cold frontal boundary, winds will become breezy east today, especially in the James River Valley.
High pressure will continue dry weather and cold conditions over southeast Idaho with valley inversions continuing. The upper level ridge breaks down today into tonight ahead of a weak Pacific system which will likely increase cloud cover Sunday night with perhaps some very light snow showers in the central mountains.
226 AM MST Sat Jan 29 2022 Upper level ridging has moved into the area and will make for a relatively pleasant weekend.
Another cool morning as persistent high pressure ridging begins to slowly break down. This will change over the next few days as the ridge deforms. An upper level trough axis with positive tilt, sweeps towards the area with a weak cold front arriving Sunday. Cold air advection (CAA) looks to be upstream as the warm airmass that has been in place for the past few days gets displaced by the in bound cold front.
336 AM MST Sat Jan 29 2022 The weekend will remain dry as ridging persists over the region. The well-advertised pattern change comes barreling through early in the week, as the H5 ridge finally breaks down. The initial push will be a system sweeping across Montana, dragging the first cold front into northern WY.
Current surface analysis shows earlier cold front has pushed well south and east of the area and is now draped across the Mid-Atlantic region SE into the Deep South. In its wake, high pressure currently centered over the lower MS Valley will gradually build into the area, gliding overhead today before pushing off to the east by tonight. Temperatures have plunged into the lower teens early this morning under mostly clear skies and deep northerly flow, with radiational cooling further exacerbated by our fresh snowpack.
A weak upper low will bring a chance for some light snow across southeast Arizona on Sunday.
Upper level ridge over the area will shift southeast and weaken today. High pressure may bring another break in the weather toward the latter half of the week.
529 AM CST Sat Jan 29 2022 Upper level ridging over the western U.
(Today) Breezy southwest winds will develop today, resulting in much warmer afternoon temperatures.
Welcome to the weekend and continued dry weather with chilly early morning hours (ranging in the low 30s to mid 40s) with mild afternoon highs (60s to low 70s). A weak upper low continues to spin over the Pacific Ocean to the west of CA. As we look ahead into next weak, the most notable weather items are: 1) we'll see a slight cooling trend for afternoon highs where valley locations will likely stay in the upper 50s to upper 60s instead of peaking in the low 70s.
329 AM CST Sat Jan 29 2022 High pressure extended from eastern Arkansas into south Texas early this morning. Aloft, an upper low over North Carolina, with a ridge over the Great Basin.
Winds will tend to to be from the west and southwest, but will turn more to the northwest at GUY as a trough moves through overnight tonight. /Issued 317 AM CST Sat Jan 29 2022/ Current water vapor analysis depicts a mid to upper level deep trough digging down through the Ohio River Valley all the way down into Florida. Currently this trough has much of the SE to include a large portion of Florida in Wind Chill Advisories or Freeze Warnings. Further west and upstream is a ridge sitting over the Pacific Northwest. Under that ridge high pressure sits over Utah and Nevada. Further southwest of there, off the coast of California, sits a split flow low pressure system. The FA sits under northwest flow between the ridge out west and the trough to the east.
Additionally, widespread high clouds linger over the region as a mid/upper level low approaches the southern California coast with patchy fog also observed in the Russian River Valley to the west of Santa Rosa. Welcome to the weekend and continued dry weather with chilly early morning hours (ranging in the low 30s to mid 40s) with mild afternoon highs (60s to low 70s). A weak upper low continues to spin over the Pacific Ocean to the west of CA. As we look ahead into next weak, the most notable weather items are: 1) we'll see a slight cooling trend for afternoon highs where valley locations will likely stay in the upper 50s to upper 60s instead of peaking in the low 70s.
Mid and high level cloud cover will continue to increase across W WA through today, with a warm front approaching off the Pacific. Upper level ridge over the area will shift southeast and weaken today. High pressure may bring another break in the weather toward the latter half of the week.
A weak upper low will bring a chance for some light snow across the White Mountains late tonight and Sunday with a few flurries as far west as Flagstaff tonight.
High pressure was sinking south of the Ohio Valley late this morning, while 1010 mb low pressure was over the far upper Midwest. A tightening pressure gradient ahead of a low pressure trof extending south of the low, will bring southerly wind gusts up to 20 mph this afternoon. Highs to range from the upper 20s northeast to mid 30s southwest CWA, though a couple degrees cooler where snow cover remains. Ridge of high pressure will quickly shift eastward today, resulting in increasing southerly return flow. Thanks to the southerly flow and at least partial sunshine, high temperatures will be several degrees warmer than they were yesterday. A weak cold front will pass through the region on Sunday: however, it will be accompanied by little more than a shift in the wind and slightly cooler temperatures across the W/NW CWA.
An upper low currently off the California coast will swing east across the desert southwest tomorrow bringing a quick chance for showers and possibly even some isolated thunderstorms Sunday night. Most moisture associated with the system is in the mid and upper levels and dry air in the lower levels will not be favorable for significant precipitation accumulation. In addition, despite lows dropping below freezing in parts of southeastern New Mexico and the northwestern Permian Basin, wintry precipitation is not expected as rainfall should end before the onset of subfreezing temperatures.