Aikyam-Lab/Synoptic-Bench huggingface dataset:
450 PM MDT Fri Apr 1 2022 A few light showers finally showed up at the surface this afternoon from what had been mostly virga from high cloud bases through this morning through mid-day as the upper trough was moving across the forecast area. By early afternoon the cold front had pushed mostly through the forecast area with northwest winds gusting to 40 mph being pretty common in the wake of the front. Expect the system to continue east of the area tonight with high pressure moving in at the surface and an upper ridge moving over the area on Saturday.
536 PM MDT Fri Apr 1 2022 An upper level trough over the Colorado/Kansas border will move east of our area tonight with a ridge developing over Colorado on Saturday. This ridge will produce subsident flow which will lead to dry conditions. Gusts across the higher terrain will be between 30-40 mph tomorrow while southerly winds across the plains will gust up to 20 mph.
644 PM EDT Fri Apr 1 2022 Weak high pressure will build across the region tonight allowing winds to diminish. This dry air will help temperatures radiate into the low to mid 20s for the mountains, with readings hovering around freezing for the foothills and Piedmont. Winds are gusting in the 20-30mph range and the higher elevations are seeing gusts topping 40mph at times. Winds will continue through the late afternoon and into early evening, eventually relaxing overnight as the pressure gradient diminishes and high pressure begins to move overhead. May have a few spots in sheltered high elevation valley locations decouple by early Saturday morning allowing for temperatures to reach the lower 20s.
835 PM EDT Fri Apr 1 2022 The axis of a deep upper level trough and cold pool of air aloft will drift northeast across the St. Lawrence River Valley tonight followed by an area of high pressure and tranquil weather on Saturday.
Otherwise, expect E/SE winds early this evening to trend light and variable overnight and then eventually NW as the disturbance and a cold front shift east into the region through the day on Saturday. An upper-level trough in conjunction with the surface front will bring mostly cloudy skies and support a chance for shower and isolated thunderstorms across much of northeast Texas, southeast Oklahoma, extreme northwest Louisiana, and southwest Arkansas overnight.
High pressure in place overhead is providing clear skies and calm to light winds. The upper level pattern shows a longwave trough over most of the eastern US resulting in northwest flow.
737 PM EDT Fri Apr 1 2022 The axis of a deep upper level trough and cold pool of air aloft will drift northeast across the St. Lawrence River Valley tonight followed by an area of high pressure and tranquil weather on Saturday.
The current upper level trough will exit eastern NM this evening, but not before it generates showers and a few thunderstorms in the northeast to east central areas through late afternoon.
8", cooler temperatures aloft (-12C), and the addition of an upper level disturbance passing through, will set up an afternoon and evening of numerous to widespread showers and strong lightning storms, with some storms becoming severe.
* Clearing skies this evening * Frosty temperatures tonight * Rain returns Saturday afternoon and evening An upper level low is exiting Indiana this afternoon, with weak high pressure moving in from the SW. This porcess of dry air entrainment will continue through this evening, with building high pressure further enforcing clearing. High pressure building will also create near calm conditions over the region. This will interact with a jet oriented WNW, pushing the low towards central Indiana by late tomorrow morning. The high temperature forecast will be challenging tomorrow as onset of precipitation and low arrival will have a significant influece on afternoon highs. CAA will return Saturday night with clearing skies and lows back below freezing.
High pressure will build into the area through Saturday morning.
219 PM PDT Fri Apr 1 2022 A deep marine layer will continue through the weekend with night and morning coastal low clouds extending onto the lower coastal mountain slopes at times.
1001 PM EDT Fri Apr 1 2022 Clouds will break up tonight as high pressure builds in with more cool temperatures. After a sunny start on Saturday, clouds will again quickly thicken as the next low pressure moves through the Great Lakes.
1158 PM EDT Fri Apr 1 2022 Dry and stable conditions will exist tonight and Saturday, as high pressure gradually builds across the region. A low pressure system tracking through the region will bring the next period of lower ceiling heights within an expanding area of precipitation Saturday evening through early Saturday night. Potency of upstream ridging evident per GOES visible channel with minimal diurnal cumulus over Wisconsin. Thermal trough departs tonight allowing H8 temps to recover near minus 4C. System relative anticyclone tilted southward wrt height between the 288-300 Kt isentropic surface reinforces synoptic-scale descent leading to benign conditions. Ridge axis reaches Ontario by daybreak Saturday with the upstream inflection point of the wave overhead.
401 AM EDT Sat Apr 2 2022 High pressure will move off to the east today. A cold front will quickly move across the region tonight.
416 AM EDT Sat Apr 2 2022 GOES water vapor imagery shows the Florida keys and surrounding waters under a rather robust mean layer ridging pattern with broad deep subsidence extending across the Western Caribbean.
There could be some isolated orographically-induced sprinkles/flurries in the mountains earlier in the night, but high pressure settling to our west will promote large-scale subsidence elsewhere.
250 AM EDT Sat Apr 2 2022 High pressure will pass over Pennsylvania today.
An upper level trough and associated cold front is moving through southwest Kansas. The cold front as of 10 pm is located from Hays to Ashland and will continue to move east through the night. Expect skies to clear quickly behind the front as subsidence aloft moves in behind the trough. Based on CAMs and radar trends, ongoing shower activity will linger across central and eastern portions of southwest Kansas through early evening then dissipate west to east as a cold front moving into the region pushes farther southeast into northern Oklahoma and eastern Kansas. Under plenty of sunshine, expect afternoon highs ranging from the 60s(F) in central Kansas to the lower 70s(F) in extreme southwest Kansas.
A weak and fast-moving cold front will move across the terminals close to daybreak, resulting in a wind shift and a few showers. Meanwhile, a lee cyclone over the Central Plains will drag a weak surface cold frontal boundary into the area overnight as it pushes northeastward. Nonetheless, it should still be a warm but generally pleasant day with highs reaching the lower 80s at most locations and overnight lows in the 50s/lower 60s.
An upper level trough over the Colorado/Kansas border will move east of our area tonight with a ridge developing over Colorado on Saturday. This ridge will produce subsident flow which will lead to dry conditions. Gusts across the higher terrain will be between 30-40 mph tomorrow while southerly winds across the plains will gust up to 20 mph.
1120 PM EDT Fri Apr 1 2022 High pressure will drift in for Saturday.
At the surface, associated surface cold front has begun to develop and is pushing southeast, with this entering the far NW Panhandles as of 18z.
458 AM EDT Sat Apr 2 2022 High pressure will pass over Pennsylvania today.
Despite the return to southerly flow, temperatures across the region today will not warm substantially, and will even be cooler than yesterday across the Rolling Plains as layer thicknesses remain relatively low in the wake of Friday's cold front. With continued dry fuels, breezy conditions, and RH progged to fall into the low teens, elevated fire weather conditions are expected once again this afternoon for most locations on the Caprock.
1255 AM EDT Sat Apr 2 2022 Mainly dry weather and seasonable temperatures today under building high pressure. Look for mid cloud coverage to increase during the late afternoon due to moist advection aloft ahead of the next crossing trough. Precipitation chances will increase with better jet support and weak moist advection, likely favoring locations north of Pittsburgh and the higher terrain. Modest warm advection ahead of the system will allow for rain as the initial precipitation type, with cold advection allowing for a period of rain/snow mix (or snow in the higher elevations) behind the exiting low.
354 AM EDT Sat Apr 2 2022 Mainly dry weather and seasonable temperatures today under building high pressure. Look for mid cloud coverage to increase during the late afternoon due to moist advection aloft ahead of the next crossing trough. Precipitation chances will increase with better jet support and weak moist advection, likely favoring locations north of Pittsburgh and the higher terrain. Modest warm advection ahead of the system will allow for rain as the initial precipitation type, with cold advection allowing for a period of rain/snow mix (or snow in the higher elevations) behind the exiting low.
216 AM CDT Sat Apr 2 2022 We'll continue to deal with 2-5 mile visibility in fog over portions of eastern SD through around 12-13Z as dew points remain in the low 30s with plenty of low level moisture and light winds. Cold air will remain in place across far northeastern SD and west central MN today as dry high pressure briefly moves in at the surface and aloft.
The passing upper level trough is in the process of exiting the central plains and subsidence behind the front is leading to clear skies and light winds. Through the day as the high pressure moves east we should have milder air return to our western counties and the light winds will start to pick up out of the south for areas mainly along and west of highway 283. Highs will range from the mid 60s in the east to the lower 70s in the west. By sunrise we should see an approaching cold front start to move into our far northwest zones with strong northwest winds behind it.
An upper level trough exits east out of Nebraska and a ridge builds over the Central Plains. Southerly winds will assist in WAA and high temperatures will range from the low 60s in north central Nebraska to the low 70s in southwest Nebraska.
Mid/upper level ridging briefly slides through overnight with the low level pressure gradient reorienting for an a more easterly surface wind.
858 PM PDT Fri Apr 1 2022 A deep marine layer will continue through the weekend with night and morning coastal low clouds extending onto the lower coastal mountain slopes at times.
1236 AM CDT Sat Apr 2 2022 H5 analysis from earlier today had a closed low along the Saskatchewan/Manitoba border. A trough extended south of this feature into southern Colorado. East of this feature, ridging extended from southern Minnesota into western Ontario. East of this ridging, a trough of low pressure extended from eastern Hudson bay, south into the Carolinas. Ridging was also noted along the Pacific northwest states. This ridging extended north into northern British Columbia. Further west, low pressure was located over the Gulf of Alaska. At the surface, a cold front extended from just east of North Platte to the O'Neill area. The H5 trough axis will move east of the forecast area by late evening. Behind the exiting trough of low pressure, high pressure will build into the area toward 12z Saturday.
Will not rule out a few areas of frost in the higher terrain of southern middle Tennessee this morning, but temperatures are expected to remain above freezing. High pressure will center near the area tonight, resulting in an uneventful night with lows in the lower 40s.
Southerly winds will develop ahead of the waves and their associated cold front this morning, followed by gusty northwesterly winds this afternoon once the front passes. Given the southerly winds early, high temperatures will be a few degrees warmer than they were yesterday. Skies will clear and winds will diminish tonight, allowing lows to bottom out in the lower to middle 30s.
Precipitation should come to an end around midnight as this trough slides east and dampening high pressure moves in.
453 AM EDT Sat Apr 2 2022 High pressure will pass over Pennsylvania today.
An upper trough will slide across Middle Tennessee today, and that will give us some mid and high ceilings for several hours, but the low levels are so dry that we'll stay rain-free.
A cold front is moving through the area tonight, but light return flow will resume Saturday as surface winds quickly veer back around.
324 AM EDT Sat Apr 2 2022 After some morning clouds, high pressure will bring mostly sunny skies and seasonable temperatures today.
1106 PM EDT Fri Apr 1 2022 High pressure will drift in for Saturday.
1140 PM MDT Fri Apr 1 2022 06Z TAF CYCLE VFR all terminals the next 24 hrs with warmer temperatures, low humidity, and SKC. A lee side trough will develop over eastern NM aft 18Z with SW wind gusts of 25 to 30 kt across the plains. The current upper level trough will exit eastern NM this evening, but not before it generates showers and a few thunderstorms in the northeast to east central areas through late afternoon.
1047 PM MDT Fri Apr 1 2022 Water vapor imagery and upper level analysis depict an upper low currently centered over central Manitoba with trough axis extending southward through into the southern High Plains. Trough axis continues to pivot eastward through the forecast area this afternoon.
955 PM MDT Fri Apr 1 2022 A few light showers finally showed up at the surface this afternoon from what had been mostly virga from high cloud bases through this morning through mid-day as the upper trough was moving across the forecast area. By early afternoon the cold front had pushed mostly through the forecast area with northwest winds gusting to 40 mph being pretty common in the wake of the front. Expect the system to continue east of the area tonight with high pressure moving in at the surface and an upper ridge moving over the area on Saturday.
With the persistent fetch off of the Straits of Florida and Hawk Channel, temperatures are in the lower to mid 80s and dewpoints are in the mid 70s.
A trough is moving through the region this morning with an associated cold front currently parked over the far northwestern portion of the CWA. Northwest WI is currently slightly below freezing therefore some areas may experience light snow accumulation through the early morning hours. Temperatures are expected to diurnally increase through the day, however models are indicating that cold air associated with the trough may create just enough instability for low-top showery activity to develop late this afternoon. The region will get a quick break from precipitation Sunday as high pressure builds in.
and Sunday The latest RAP analysis and satellite/radar imagery show a rather disjointed upper trough moving across the northern Plains and south-central Canada early this morning. As the upper trough tracks across the region today precip trends and accumulations are the focus of this forecast.
Today is quieter and warmer as ridging sets up aloft and lower pressure builds along the Front Range later in the day. The lower pressure will generally be away from the area, but winds will still shift to out of the north towards the morning hours and sustain around 20-30mph with gusts near 40. High's will be cooler compared to Saturday with locales west of Highway 27 seeing 50's and east of Highway 27 seeing 60's. Most of the area will also see cloudy skies though Southwestern Nebraska may see more sun and slightly warmer temperatures.
Clouds are on the increase as a mid level trough approaches from the west. The mid level trough weakens as it heads into the Mid- South this morning. The trough moves quickly east this afternoon with clearing skies and temps recovering into the 60s at most locations.
700 AM CDT Sat Apr 2 2022 Clouds and cold front pushing south this morning with temps holding around 30F. Today will see clouds overspread most of the area as a cold front moves through the region this morning. There remains good agreement within the model solutions for Sunday's short wave to track from SW ND into SE SD with precip along the western and southern edges of the forecast area from Langdon south to Cooperstown and Valley City to Lisbon and into the Wahpeton and Breckenridge and over to Elbow Lake MN with a few hundredths to a tenth of an inch of precip.
(Today through Sunday afternoon) WV imagery shows the upper trough moving into the ArklaTex this morning. The associated cold front trailing the trough is making its way to the border, and will shave 2-3 degrees off of afternoon highs over yesterday's. However, temperatures will remain above normal, with surface winds veering to southeast by late afternoon under weak ridging aloft. Sunday, zonal flow aloft transitions to southwest as a trough approaches through the southwest CONUS. Leeside troughing on the Front Range will induce a westerly downslope warming component into the mix, which will combine with increasing thicknesses to increase afternoon highs by 7-8F over Saturday's.
/issued 341 AM CDT Sat Apr 2 2022/ SHORT TERM (Now through Sunday): The most recent surface analysis indicates a warm front just south of the BRO CWFA. This front is progged to dissipate while a weak cold front in the Lone Star State approaches from the northwest before transitioning briefly to a stationary front before dissipating, too. These frontal boundaries may generate isolated showers today and Sunday over the lower Texas coastal waters while Deep South Texas and the Rio Grande Valley themselves remain dry.
Temps are 15-20 degrees warmer this morning than they were at this point yesterday despite the rapidly clearing skies.
Scattered showers along the cold front appears to be weakening as it moves down from N TX this morning toward SE TX. So, will keep highs for this afternoon in the lower to mid 80s. clear skies and weak CAA should allow for decent radiational cooling tonight with lows ranging from the lower to mid 50s north to the up- per 50s and lower 60s south. Lows tomorrow night are also going to be slightly warmer.
738 AM EDT Sat Apr 2 2022 Mainly dry weather and seasonable temperatures today under building high pressure. Look for mid cloud coverage to increase during the late afternoon due to moist advection aloft ahead of the next crossing trough. Precipitation chances will increase with better jet support and weak moist advection, likely favoring locations north of Pittsburgh and the higher terrain. Modest warm advection ahead of the system will allow for rain as the initial precipitation type, with cold advection allowing for a period of rain/snow mix (or snow in the higher elevations) behind the exiting low.
234 AM PDT Sat Apr 2 2022 A deep marine layer and prevailing onshore flow will keep the weather cool this weekend, with night and morning low clouds extending onto the lower coastal mountain slopes at times.
One to two inches of accumulating snow is likely, especially along and north of I-94 where lows are most likely to be below freezing during the peak of the forcing.
None of the guidance, including the often colder NAM, bring temperatures to subfreezing levels, so a conservative route is best to take.
BW Chattanooga Airport, TN 67 43 68 42 74 / 0 0 0 0 10 Knoxville McGhee Tyson Airport, TN 64 42 65 40 73 / 0 0 0 0 10 Oak Ridge, TN 63 41 66 40 72 / 0 0 0 0 10 Tri Cities Airport, TN 63 40 61 35 70 / 0 10 0 0 10.
The passing upper level trough is in the process of exiting the central plains and subsidence behind the front is leading to clear skies and light winds. Through the day as the high pressure moves east we should have milder air return to our western counties and the light winds will start to pick up out of the south for areas mainly along and west of highway 283. Highs will range from the mid 60s in the east to the lower 70s in the west. By sunrise we should see an approaching cold front start to move into our far northwest zones with strong northwest winds behind it. Sunday will bring the passage of a cold front during the day with winds increasing out of the northwest to 20-30 mph with higher gusts.
507 AM MDT Sat Apr 2 2022 Mainly zonal flow aloft will be across the area today as a sfc lee trough is in place along the Front Range. For tonight, an upper level trough will move across the nrn Rockies with westerly flow aloft continuing. At lower elevations it will remain dry, however, a cold front will move across nern CO late tonight. Finally, winds will be gusty over the higher terrain. Precipitation will be snow in the mountains, and rain and mixed on the lower elevations. The wave will push a cold front across northeast Colorado Sunday morning. There will be breezy northerly winds behind the front and temperatures will be 10 to 15 F cooler, with highs in the 50s across the plains and 30s and 40s in the high country.
A mostly dry cold front will bring temperatures back to near seasonal normals on Sunday.
Along the cold front, which was located roughly from near Upsala, ON to Ely, MN to Hibbing to Park Rapids as of 915 AM, cooling cloud tops have been observed over the past 2 hours and KDLH radar has begun to pick up returns along the front. A trough is moving through the region this morning with an associated cold front currently parked over the far northwestern portion of the CWA. Northwest WI is currently slightly below freezing therefore some areas may experience light snow accumulation through the early morning hours. Temperatures are expected to diurnally increase through the day, however models are indicating that cold air associated with the trough may create just enough instability for low-top showery activity to develop late this afternoon. The region will get a quick break from precipitation Sunday as high pressure builds in.
305 AM MDT Sat Apr 2 2022 High pressure over the region will slide off to the east today as an approaching Pacific cold front moves into the area. The cold front will move into western areas this afternoon, spreading showers eastward through the evening and night. Along with the showers, the cold front will bring gusty west to northwest winds, which could be locally enhanced by the convection. Cooler and drier conditions can be expected on Sunday, with breezy northwest winds continuing over far southeast Montana.
Will not rule out a few areas of frost in the higher terrain of southern middle Tennessee this morning, but temperatures are expected to remain above freezing. High pressure will center near the area tonight, resulting in an uneventful night with lows in the lower 40s. This high will slowly shift to the east on Sunday and sfc flow will begin to veer to the south over the southern Plains.
The forecast is on track with temperatures climbing into the low to mid 60s. Clouds are on the increase as a mid level trough approaches from the west. The mid level trough weakens as it heads into the Mid- South this morning. The trough moves quickly east this afternoon with clearing skies and temps recovering into the 60s at most locations.
Current water vapor imagery shows high pressure ridging over our eastern areas with a trough and associated cold front hitting the WA/OR coast currently. Models continue to show this trough and cold front moving over our area by late this afternoon into the early evening. 1 Probabilistic 50th percentile puts wind gusts of 40 to 45 mph across the Snake Plain and our Southwest areas with gusts of 50 mph for ridge tops, especially along the eastern benches of the Snake plain and the Big Lost Range. High pressure ridging builds back in Saturday night into Sunday bringing dry conditions, mostly sunny skies, and overall light winds, at least briefly.
A cold front from the system will hang around in central Nevada on Saturday night through Sunday, bringing some increased cloud cover there and perhaps a few showers in southeastern portions of White Pine County.