Aikyam-Lab/Synoptic-Bench huggingface dataset:
1151 PM EST Thu Mar 4 2021 A dry cold front overnight will bring cooler air across the Carolinas Friday into the weekend, while low pressure passes south of the area with a few clouds on Saturday. An already highly amplified trough will deepen further through the period. Low pressure will develop as a result well offshore, far enough to preclude any rain chances.
Near record high temperatures for Eastern Washington and North Tonight through Saturday: An upper trough will persist off the coast into Friday resulting in continued mild southwesterly flow aloft. Friday afternoon a cold front will reach the Cascades late afternoon into the evening. The front will usher in much cooler temperatures across Eastern Washington and North Idaho for Saturday with highs mainly in the mid 40s to low 50s.
High pressure currently centered near Grand Isle, and will drift slowly eastward overnight. As upper trough currently near Amarillo approaches during the daytime hours Friday, ceilings will gradually build downward from about FL100 around midday to MVFR between 00z and 06z Saturday.
400 AM EST Fri Mar 5 2021 A dry cold front will move south through our region early tonight. Chilly high pressure will follow and extend across the central Appalachians and southern middle Atlantic through the weekend. Northerly winds may gust as high as 15-20 mph in the morning and early afternoon as a result of an increased pressure gradient from the high. The cool Canadian high pressure will also keep highs in the lower-50s NE to upper-50s SW, which is about 5-10 degrees below normal. This will keep temperatures from dropping below the lower-to-mid-30s in most places.
1243 AM EST Fri Mar 5 2021 A dry cold front will move south through our region early tonight. Chilly high pressure will follow and extend across the central Appalachians and southern middle Atlantic through the weekend. Cold air advection will keep highs around 5 to 10 degrees below seasonal normals, with temperatures ranging from the low to mid 50s. Temperatures will be slightly lower Friday night, with lows ranging from the mid 20s north to the low 30s south. Upper level trough will move across the region Saturday allowing for sunny skies in the afternoon and evening hours.
Another passing trough will bring cold air advection to the northern counties and associated isolated snow showers and flurries mainly to the northern counties Friday night. Amplified upper troughing is progged to persist across Eastern North America through the weekend.
949 AM EST Fri Mar 5 2021 A dry cold front brings cooler air across the Carolinas Friday through the weekend, while low pressure passes southeast of the area with a few clouds possible through Saturday.
Otherwise, look for a slightly cooler day as strong low pressure over the eastern Canada/northeastern U. draws cooler air into the Northern Plains. This plays out to readings in the lower 50s east of Interstate 29 to around 60 over south central SD and the James River Valley. While staying on the warmer side of guidance for Saturday, remained somewhat constrained with a southeasterly low level flow - which is not typically conducive for the very warmest temperatures. It will be breezy with mixed layer winds of 15 to 20 kts, and with the warmer temperatures there will be an enhanced fire danger - reaching Very High in our far western counties.
439 AM PST Fri Mar 5 2021 High pressure over the Southwest will bring warm and dry weather today. An incoming trough will move inland to our north, bringing cooler weather and gusty winds in the mountains and deserts.
526 AM CST Fri Mar 5 2021 Upper low moving into NW Oklahoma this morning will maintain scattered showers across the area, mainly for the first half of the valid period. VFR elements will prevail for most of the second half of the period as the upper low moves away from the region. /Issued 256 AM CST Fri Mar 5 2021/ Impressive vapor imagery this morning of the compact strong upper low centered over the TX Panhandle region and dropping southward in line with model solutions. Precip chances will remain highest on the northern periphery of the upper low while gradually translating southeastward with the track of the weakening wave.
At the surface, a backdoor cold front is draped across the Mid-South and will continue a gradual shift south before washing out along the Gulf Coast this weekend.
524 AM CST Fri Mar 5 2021 This morning the middle Mississippi Valley is sandwiched between cool and dry high pressure building into the Great Lakes and a low over central Oklahoma with a areas of showers and storms arcing from central KS into eastern OK. We'll remain between these features today, with the low drawing warm and moist air into the region from the south and the high advecting in cooler and drier air from the east. The low will manage to at least build some cloudiness into the region, which coupled with the easterly flow at the surface, will keep temperatures a bit cooler than what we've seen the last few days.
853 AM CST Fri Mar 5 2021 Area of rain and occasional thunder will continue to slowly shift east and southeast across the fa today as the upper low continues to slowly move across the area.
Upper ridge will bring warm and dry weather to the area today and Saturday with well above normal temperatures.
306 AM CST Fri Mar 5 2021 This morning the middle Mississippi Valley is sandwiched between cool and dry high pressure building into the Great Lakes and a low over central Oklahoma with a areas of showers and storms arcing from central KS into far SW MO. We'll remain between these features today, with the low drawing warm and moist air into the region from the south and the high advecting in cooler and drier air from the east. The low will manage to at least build some cloudiness into the region, which coupled with the easterly flow at the surface, will keep temperatures a bit cooler than what we've seen the last few days.
339 AM CST Fri Mar 5 2021 Light rain tapered off across north central Kansas during the pre-dawn hours as an upper low pressure system edged farther southeast from the Oklahoma panhandle into southern Oklahoma. Short term models are fairly consistent with the fog and the lower visibilities primarily focused along and north of Interstate 80 and will continue to monitor trends for any areas of dense fog and any need for a fog headline. the airmass is several degrees cooler than yesterday so we are looking for aftn highs to average in the 50s to low 60s. with warmer air advecting from west/east. Temps are on track to return to the 60s/around 70F Saturday with the warmest readings in our western zones in proximity to the thermal ridge.
A backdoor cold front across ncntl Nebraska this morning will be the focus for areas of fog. The temperature forecast leans on the bias corrected guidance which was warmer than the straight guidance.
635 AM EST Fri Mar 5 2021 The region will remain between strong low pressure over Eastern Canada and high pressure situated over southern Canada and the Upper Midwest through the start of the weekend.
Mid level ridging was seen in the lee of the Rockies with another closed upper low swirling over OK. The mid level ridging does inch it's way into the Plains, but there really isn't too much going on. Highs today will mainly be in the lower to middle 30s, with some upper 30s in downsloping areas of NE lower. Pattern synopsis/forecast: By the start of the period Saturday morning, closed low pressure is expected to continue to spin across far eastern Quebec with broad troughing extending westward through the Great Lakes. Upstream amplified ridging is expected to be draped across the plains.
The fog and low clouds are expected to dissipate quickly as a Pacific cold front moves into the region today. Breezy conditions will develop behind the cold front today and with plenty of sunshine and a downslope component in the low-level winds, temperatures will warm to above normal across all areas. Highs today will range from the lower 70s in the Hill Country to the lower 80s in the Rio Grande and coastal plains. There could be a brief shower over the coastal plains late this morning as the cold front approaches. A second frontal boundary will move in late this afternoon and evening, bringing cooler air along with a slight uptick in low-level moisture.
A weak cold front will move through the district late tonight into Saturday morning and bring a chance of showers to mainly the higher elevations from Fresno County north.
550 AM EST Fri Mar 5 2021 High pressure will stay centered to our west but expanded into our area through into this weekend. Despite plenty of sunshine, cooler temperatures as 8h temps drop a bit, but northwest winds may generate enough downslope warming to boost readings into the 50s across our southern piedmont of VA into NC counties, with 40s elsewhere, except some 30s in highest elevations. Tonight, high pressure remains situated from the Canadian Prairies to the TN Valley, ridging into our region, keeping us dry. A deep upper level trough in the northern stream will preside over the Northeast throughout the weekend. As a result, the Mid Atlantic will stay dry with high pressure building southward from Canada.
Cloudy and slightly cooler conditions are expected for much of today as an upper low drops southeast from the High Plains into Texas, which will also lower fire danger temporarily with lighter northeast winds and slightly higher humidity. Elevated fire danger will redevelop Saturday, however, as south southwesterly flow and warmer temperatures return.
558 AM EST Fri Mar 5 2021 A dry cold front brings cooler air across the Carolinas Friday through the weekend, while low pressure passes southeast of the area with a few clouds possible through Saturday.
A warming trend will develop through mid week as the high pressure system moves off to the east. Lows tonight will be in the low to mid 20s with highs on Saturday in the 40 to 45 degree range. A high amplitude upper trough will be positioned along the East Coast to start the period.
Light rain tapered off across north central Kansas during the pre-dawn hours as an upper low pressure system edged farther southeast from the Oklahoma panhandle into southern Oklahoma. Short term models are fairly consistent with the fog and the lower visibilities primarily focused along and north of Interstate 80 and will continue to monitor trends for any areas of dense fog and any need for a fog headline. the airmass is several degrees cooler than yesterday so we are looking for aftn highs to average in the 50s to low 60s. with warmer air advecting from west/east. Temps are on track to return to the 60s/around 70F Saturday with the warmest readings in our western zones in proximity to the thermal ridge.
Continuing to go with the higher end of guidance for high temperatures for most (the past few days have allowed for a decent calibration given the persistent pattern). This means a little cooler than the past few days, but still in the 50s and 60s (about 10 to 20 degrees above average). Fog should develop once again tonight into Saturday morning as high pressure remains parked to the east. Incoming low pressure will lead to a tightening pressure gradient and breezy southeasterly winds Saturday, with gusts in the 20 to 30+ mph range. Despite not a great direction for maximizing high temperature potential, warmer air aloft compared to previous days builds in throughout the day.
The bulk of the rain will fall across the Highway 84 corridor and south, but some light rain will be possible up to the I-20 corridor this evening.
The closed low over western Labrador will continue to wobble around eastern Canada through the first half of the weekend maintaining northwest mid-level flow locally. As a result, little to no temperature advection will occur with SE MI continuing to remain under the gradient between the colder eastern Canadian airmass and a warmer Great Plains ridge. Highs Saturday likely will be a couple degrees lower despite continued sunny skies as the upper trough digs further southeast allowing the Canadian airmass to expand westward.
444 AM EST Fri Mar 5 2021 Chilly high pressure will extend across the central Appalachians and southern middle Atlantic through the weekend. Northerly winds may gust as high as 15-20 mph in the morning and early afternoon as a result of an increased pressure gradient from the high. The cool Canadian high pressure will also keep highs in the lower-50s NE to upper-50s SW, which is about 5-10 degrees below normal. This will keep temperatures from dropping below the lower-to-mid-30s in most places.
Another pleasant day is expected with well above normal temperatures (a few near-record daily highs are possible), considerable sunshine, and light winds under high pressure. Minor changes arrive on Saturday as a weak cold front brings showers, cooler temperatures, and breezy westerly winds.
Dry conditions will also continue across the region for at least one more day, with primarily mountain rain and snow showers returning on Saturday as a Pacific cold front moves across the region during the afternoon hours.
Another passing shorwave is likely to repeat cloud and flurry pattern early on Saturday as the trough over the ern CONUS amplifies with phasing of a southern stream low. That trough will maintain cold and dry weather, with exception for aforementioned flurries, through the weekend.
244 AM MST Fri Mar 5 2021 Latest upper air analysis is showing the closed low over the TX and OK Panhandles moving southeast. A large expanse of rainfall is continuing to the east and north of the low center. Behind the closed low a short wave ridge was over the Great Basin. Highs will be warmer than yesterday for most of the forecast area due to the clear sky behind the closed low. Wouldn't be surprised if highs were a few degrees warmer given the breezy south winds. Confidence is on the high side that northern Yuma County will meet criteria. This will help keep lows a few degrees warmer than tonight for the eastern part of the forecast area.
219 AM MST Fri Mar 5 2021 A strong upper ridge will continue to dominate our weather pattern to end the week. Thus, wind highlights for the Livingston-Nye corridor are not anticipated with the highest gusts only expected to be in the 35-45 mph range by Saturday afternoon.
623 AM EST Fri Mar 5 2021 Following a dry cold front, clear skies and cool temperatures are expected Today. Cloud cover will increase as a weak low pressure system tracks to the south of the area Saturday.
(Today and tonight) Windy and cooler conditions will affect the area today. An upper level low was making its way southeast through western Oklahoma as of 230 this morning. This low will continue moving east/southeast today into Arkansas, bringing precipitation mainly to areas of Oklahoma, and parts of Texas to our east. The main impact of this low for our area will be a cold front and gusty north/northwest winds. We will also be significantly cooler with highs ranging from the lower 60s north of I-20, to around 70 along the I-10 corridor.
With a trough axis diving SE across the Southern Plains today, what is left of the ridge is expected to slide eastward. The weakening high pressure feature, coupled with daytime heating, should allow a light sea breeze to develop this afternoon. As the high pressure continues to fade and the trough approaches, higher clouds start to filter in this evening and overnight; a precursor to the unsettled weather, then cooler temperatures to follow this weekend. VFR conditions prevail today with light NE winds shifting NW later this afternoon for coastal sites as high pressure continues to slide eastward.
A cold front will move into the region this morning, resulting in the development of gusty NW/N winds at all terminals by around 15-16Z. /issued 224 AM CST Fri Mar 5 2021/ In wake of an upper low another windy day is ahead for most all of the area. Initially winds will be nw, but transition to ne by mid afternoon and high temps will be 10 to 20 degrees cooler w-e, respectively, than previous 24hrs. Tue-Wed be the warmest days with an amplified low-level thermal ridge, especially across the wrn areas. Either Thur or Fri a Pacific front looks to move across the area favoring a bout of wind and cooler temps.
A back door cold front is moving east to west through the area early this morning. The cooler airmass and cloud cover will keep highs in the 50s today.
Where clouds do linger, temperatures will be cooler than in previous days, in the lower 40s to lower 50s. Stratus may develop tonight across portions of the west and much of the central, but fog potential will likely be more limited as winds will be a bit on the high side. For high temperatures on Saturday, we continued to nudge towards the higher NBM percentiles given the upper ridge axis directly overhead. The result produces a range of highs from the lower 50s across the Turtle Mountains, to the upper 60s and even a few lower 70s across the southwest. Additionally, winds will be quite breezy (up to 25 mph gusting to 35 mph) out of the southeast ahead of an approaching cold front.
Aloft, the area will continue to be on the inflection point of troughing to the east and ridging to the west.
High pressure aloft will result in well above normal high temperatures today through the weekend.
525 AM MST Fri Mar 5 2021 With the closed low well to the southeast across Oklahoma this morning, the H5 ridge will return to prominence today, bringing even warmer temperatures across western and central Wyoming. The ridge starts getting pinched to the east by an approaching trough on Saturday. The ridge will also bring the warmest day of the year, with widespread 50s and 60s across the lower elevations, with an outside chance at 70 around Buffalo. Western valleys will attempt to reach the 40s, depending on how persistent the remaining cold pool holds tonight, and lower clouds with the approaching trough. The trough will arrive across the western mountains during the afternoon, bringing a slight chance for precipitation, mainly for the higher elevations.
This cloud cover has kept temps a little but warmer than previously thought - but just by about 3 degrees in most areas. On the large scale, the pattern remains pretty well blocked up with a broad closed upper low over the Canadian Maritimes and ridging over much of the Canadian Rockies and western CONUS. The onshore flow will keep temps coolest across the east and along the Lake Superior shoreline, where highs will remain at or below freezing.
Increasing high pressure today into the weekend will bring a quick return to above normal temperatures and highs in the lower 80s today to potentially the middle 80s by Saturday.
A warming trend will develop through mid week as the high pressure system moves off to the east. High pressure continues to build into the mid-Ohio Valley today, leading to mostly sunny skies, cool temperatures, and a steady northerly breeze. Temperatures will rise into the low-mid 40s by afternoon -- close to normal for this time of year. Lows tonight will be in the low to mid 20s with highs on Saturday in the 40 to 45 degree range. A high amplitude upper trough will be positioned along the East Coast to start the period.
654 AM EST Fri Mar 5 2021 Chilly high pressure will extend across the central Appalachians and southern middle Atlantic through the weekend. Northerly winds may gust as high as 15-20 mph in the morning and early afternoon as a result of an increased pressure gradient from the high. The cool Canadian high pressure will also keep highs in the lower-50s NE to upper-50s SW, which is about 5-10 degrees below normal. This will keep temperatures from dropping below the lower-to-mid-30s in most places.
Broad upper ridging is sitting over the Lower 48. Within this ridge, a stacked low pressure system is generating precipitation to areas near Kansas and Oklahoma, but as we move through the day, the low pressure system will begin to disband as it moves towards the Lower Mississippi Valley. Winds go near calm as the center of high pressure nears the Lower Ohio Valley from the north. Expect a chilly weekend as we start off with a full-latitude east coast upper trof, and an upper ridge building over the Plains.
338 AM CST Fri Mar 5 2021 A backdoor cold front across ncntl Nebraska this morning will be the focus for areas of fog. The temperature forecast leans on the bias corrected guidance which was warmer than the straight guidance.
Warmer temperatures and sunny skies will prevail today.
323 AM MST Fri Mar 5 2021 Increasing high pressure today into the weekend will bring a quick return to above normal temperatures and highs in the lower 80s today to potentially the middle 80s by Saturday.
Plenty of sunshine and rapidly decreasing snowpack will help bring another mild day today, although could be a couple of degrees cooler than yesterday thanks to a slightly cooler air mass. Continued the trend of mixing in the higher side (90th percentile) of guidance, keeping temps well above ensemble means. Winds will pick up tonight and into tomorrow as the upper ridge axis shifts eastward and a trough gets going to our west. South to southeasterly winds picking up will not be as good for warming as southwesterly, but with the very warm air mass and plenty of mixing we should still be on the higher side of the ensembles.
Mid-level ridging then moves in to promote subsidence. A Pre-frontal trough this morning may bring some light showers / drizzle over the eastern areas. Rain chances continue through this afternoon as a cold front moves through our CWA and towards the coast by tonight. Tonight lows will dip to the low to mid 50s.
539 AM CST Fri Mar 5 2021 (Today and tonight) Windy and cooler conditions will affect the area today. An upper level low was making its way southeast through western Oklahoma as of 230 this morning. This low will continue moving east/southeast today into Arkansas, bringing precipitation mainly to areas of Oklahoma, and parts of Texas to our east. The main impact of this low for our area will be a cold front and gusty north/northwest winds. We will also be significantly cooler with highs ranging from the lower 60s north of I-20, to around 70 along the I-10 corridor.
A warming trend is forecast to get underway for western and central New Mexico today with cooler temperatures expected east. High pressure will begin building in late today, continuing into the weekend. Strong winds on the backside of the upper low are impacting northeast NM as well and a Wind Advisory continues through the morning hours for Union, Harding and Quay Counties. Warmer conditions are forecast across central and western NM today with plenty of sunshine as an upper level ridge pumps-up over the Desert Southwest and progresses east behind the departing upper low. However, the eastern plains will be cooler and generally below normal due to cold air advection this morning and easterly upslope flow. The upper level ridge will shift east of NM Saturday and temperatures will warm a few more degrees, bringing above normal highs to most locales.
Cloud cover will increase as a weak low pressure system tracks to the south of the area Saturday.
423 AM MST Fri Mar 5 2021 A transitory ridge of high pressure will slide overhead today in the wake of yesterday's system. The ridge axis will settle over western Colorado overnight before shifting east of the Continental Divide by daybreak Saturday.
This low passes near the southern border of the marine portion of the forecast area tonight through Saturday. High temperatures today in the low 70s expected. Low temperatures tonight in the low to mid 40s.
Dry and mild weather continue for one last day with ridge departing into the Great Basin Region. GEFS then shows upper level trough approaching the West Coast later today with a few light showers reaching the Coast Range and Shasta county by early evening. Trough will weaken, as it moves east into Nevada Saturday afternoon with precipitation diminishing.