Aikyam-Lab/Synoptic-Bench huggingface dataset:
401 AM PST Fri Feb 23 2018 A low pressure system over the western states will bring scattered mostly light showers along and west of the mountains into this morning with gusty southwest to west winds in the mountains and deserts. Dry and warmer for the weekend with locally gusty northeast winds near the coastal foothills in the mornings and gusty west winds in the mountains and deserts Saturday afternoon and evening.
1007 AM EST Fri Feb 23 2018 A nearly stationary frontal boundary will remain just south of out Pennsylvania through Saturday, before lifting north across the commonwealth as a warm front Saturday night.
417 AM CST Fri Feb 23 2018 An upper level ridge is currently centered north of the Bahamas and extends into the Bay of Campeche while a trough axis is located west of the Rocky Mountains. Moisture wrapping around the area of high pressure will surge northward across the CWA today. They all seem to converge on northwestern zones as the area that will have the highest concentration of convection, thus oriented pops that way. The main upper trough axis currently west of the Rockies will finally lift northeast and race across the midsection of the country this weekend.
Chattanooga Airport, TN 79 60 75 60 / 10 50 40 70 Knoxville McGhee Tyson Airport, TN 78 58 73 58 / 10 30 40 70 Oak Ridge, TN 78 58 73 58 / 20 30 40 70 Tri Cities Airport, TN 77 54 71 56 / 20 30 30 60.
West winds will bring mild and somewhat drier air this afternoon, with temperatures rising above freezing in most places.
1043 AM PDT Fri Mar 23 2018 The air mass behind the cold front will be considerably colder and unsettled with a chance of rain and snow showers each day through the weekend. Cooler and wetter weather possible by end of week.
High pressure near Hudson Bay was advecting dry air into the region along with an easterly flow off of Lake Superior. Upper level ridging will move over the region tonight, while the high pressure meanders around northern Ontario. Farther east, the high pressure will result in a dry forecast and a mostly cloudy sky. While the upper ridging largely remains over the region on Saturday, some vorticity moves through southern Minnesota. The vorticity departs by mid morning with the ridging aloft, and at the surface, taking control for the rest of Saturday.
256 PM EDT Fri Mar 23 2018 An upper level low pressure system will bring cooler weather along with an increase in clouds and some flurries through the weekend. The flow off the Great Lakes and current dry airmass will be limiting factors for anything more substantial The highest chances for flurries are into the evening southeast of Rome in Otsego and Delaware counties. Saturday and Saturday night: An upper level low will dive southeastward through New England during this timeperiod with continued northerly to northwest flow. The push of cooler air will knock high temperatures several degrees lower than today with most spots in the 30's.
341 PM CDT Fri Mar 23 2018 As of 20Z Friday afternoon a cutoff mid/upper low continues to spin off of the Pacific northwest coast. Within the warm sector surface temperatures have reached the low to middle 70s.
Surface analysis this afternoon places a warm front over portions of Central Arkansas and into Central and Southern Mississippi. A warm front is expected to move north across the Mid-South tonight bringing isolated to scattered rain chances to the area. Short term models indicate some rain showers with perhaps an embedded thunderstorm or two will be possible during the day Saturday with the potential for additional showers and thunderstorms along a trailing cold front Saturday evening.
High pressure is centered over Alabama this morning and will remain over the Southeast through the afternoon. Aloft there is a northwest flow and this is helping bring in some mid-level moisture on the backside of the high. The high pressure system will slide east of the area by Saturday morning. This will allow the next storm system to push into the Plains and push/develop a warm front through the northern portions of the area after Midnight.
312 PM EDT Fri Mar 23 2018 An upper level low pressure system will bring cooler weather along with an increase in clouds and some flurries through the weekend. The flow off the Great Lakes and current dry airmass will be limiting factors for anything more substantial The highest chances for flurries are into the evening southeast of Rome in Otsego and Delaware counties. Saturday and Saturday night: An upper level low will dive southeastward through New England during this timeperiod with continued northerly to northwest flow. The push of cooler air will knock high temperatures several degrees lower than today with most spots in the 30's.
Saturday, weak upper level ridging moves into the Central Plains allowing high pressure to move in western Kansas. Temperatures will range from the lower 60s toward central Kansas to the lower 70s toward the Kansas/Oklahoma border.
During the day on Saturday, a cold front will swing through the region.
/issued 915 AM EDT Fri Mar 23 2018/ Little adjustments to forecast package based on latest observations, otherwise, high pressure remains well in control of the region with mostly clear skies, and a little warmer temperatures this afternoon with highs in the mid to upper 70s.
1205 PM MDT Fri Mar 23 2018 Cancelled the High Wind warning as winds have diminished and are not expected to come up again this morning. Current obs across the area show pretty mild temperatures for 3 AM with most locations above 40 degrees, with even a few places in the lower 50's. Gusts are now between 40 to 50 mph, and if they continue to weaken, may end up cancelling the High Wind Warning for that area before noon today.
Expect partly to mostly cloudy skies with widely scattered rain or snow showers as a trough of low pressure starts to dive southeast from the eastern Great Lakes and southern Quebec. For Saturday and Saturday night there will be mainly widely scattered rain or snow showers as another trough of low pressure moves across the region.
Low temperatures range from the low to mid 30s in far eastern Colorado to the low 40s out by Hill City.
125 PM EDT Fri Mar 23 2018 High pressure will be over the area today with dry conditions. The ridge will move off the Southeast Coast Saturday with a warm front and showers moving in to the north.
A tight surface pressure gradient will exist within Deep South Texas and the Rio Grande Valley with broad high pressure over the Gulf of Mexico interacting with lower pressure over northern Mexico and the central United States. Otherwise, a 500 mb ridge of high pressure directly overhead will produce dry weather during the forecast period.
Heavy Rainfall and Potential Flooding Will Be The Main Focus A warm front is currently position near the Highway 54 corridor and down into the eastern Ozarks. Temperatures were in the lower 50s north of the warm front and the lower 70s across far southeast Kansas and southwest Missouri. Models show scattered showers and isolated storms will develop later this evening and overnight ahead of an advancing cold front. Saturday will be cooler and breezy with clouds decreasing from west to east during the day. Canadian high pressure will build in for Saturday night with most temperatures falling into the lower and middle 30s.
210 PM EDT Fri Mar 23 2018 High pressure will build in from the west through Saturday. Low pressure will move from the mid-Mississippi valley Saturday to the southern Mid-Atlantic Saturday night.
237 PM CDT Fri Mar 23 2018 Low pressure center at surface starting to move now and seen in surface data over western KS. Lift remains significant through the day on Saturday, with temperatures around freezing over the northern CWA. Winds will also increase overnight and remain easterly at mainly 20 gusting to 30 to 35 through day as the low center moves south of region.
Also starting to see some freezing rain and sleet where a ice crystals in are lacking.
516 PM CDT Fri Mar 23 2018 A large area of high pressure over the northeastern gulf continues to bring dry and seasonably mild conditions to the area. A light return flow will take place tonight as the high slowly slides eastward.
These kind of rates should overcome the warm ground and surface temps in the lower 30s. Still expecting 3 to 6 inches of snow tonight, mainly over the higher terrain areas of the Prairie Coteau. Generally a trace to up to an inch of snow is possible there, and if p-type is changed over to light drizzle/freezing drizzle type precipitation, generally a trace of precipitation is expected at this point.
240 PM CDT Fri Mar 23 2018 Mid to high level clouds have been slowly eroding this afternoon as the upper level ridge begins to flatten out and become more zonal. Another impulse will sweep down the east side of the ridge axis later tonight, and a few showers could move across the northeast counties. Overall, much warmer temperatures tonight with mainly high level clouds.
Early this afternoon, the area remained under the influence of a dry sprawling high pressure system across Canada with some increase in mid/high level moisture. The highest potential for 5-10+ inches of snow looks to be from south central Minnesota through parts of northeast Iowa. There are still some differences in the global/high res models exactly where the gradient sets up (notably the HRRR/RAP keep the highest amounts southwest of the area), so will have to monitor trends over the next several hours. In addition, winds will become gusty from the east through tonight in response to a tightening gradient as low pressure tracks across the Mid MS Valley. The snow, or mixed rain/snow, will be winding down by Saturday afternoon as mid-level ridging begins to work in from the west.
In addition, temperatures have trended cooler today, reducing snowmelt rates. A large Pacific storm system will continue to move inland, causing unsettled and cooler conditions through the upcoming weekend.
Omega blocking will take root throughout the weekend with geopotential heights ballooning to the northeast through Hudson Bay. This will keep the low track and precipitation over southern Indiana. Highs will range in the lower 40s for much of the area, lower 30s in the Thumb.
244 PM CDT Fri Mar 23 2018 Tonight, the upper level ridge that has kept the area warm and dry the past few days will continue to translate east as a Pacific trough starts to dig southward across the Pacific coast. Tomorrow, a weak backdoor cold front will move across the area. Backing winds and weak CAA will result in temperatures about 10 to 15 degrees cooler than today and calmer winds.
340 PM CDT Fri Mar 23 2018 Current sfc analysis shows high pressure centered over the nern Gulf and lower pressures over the srn Plains providing an elevated srly low-level flow over the forecast area this afternoon. Water vapor imagery shows deep troffing along the East Coast with weak ridging developing up the Plains. Despite the increasing low-level moisture, the ridging aloft is maintaining at least some capping and regional 88Ds remain quiet. Max temps tomorrow are progged to reach into the lower 80s across the nwrn 1/2 of the area. A storm system coming ashore along the Pacific coast will push ewd, helping flatten the cntl CONUS ridge.
Upper ridging is in place across the central US this afternoon, with a departing upper trough situated over the eastern Great Lakes and northeast US. The upper ridge to our west will dampen this evening as a strong system ejects eastward from the northern Rockies tonight and begins to head our direction. Meanwhile, at the surface a strong low pressure system will develop in the high plains of eastern Colorado this afternoon before shifting east through Kansas tonight, and following a path from roughly Kansas City through Nashville and Chattanooga during the day tomorrow. At that time, forecast surface temps and isothermal near- freezing temp profiles from the RAP and NAM support precip beginning as snow in SW VA and the NE TN mountains. The forecast will lean toward these colder models rather than the warmer GFS.
334 PM EDT Fri Mar 23 2018 A large area of high pressure will continue to dominate the weather across South Florida bringing dry conditions to the region tonight and into the weekend. Low temperatures tonight will not be as cool as the last couple of nights as they will drop into the upper 40s across the northwestern interior to the lower 60s across the east coast areas. The winds will begin to shift to a more east southeasterly direction Saturday which will allow for warmer temperatures during the afternoon. High temperatures on Saturday will range from the upper 70s across the east coast metro areas to the lower 80s across the interior.
High pressure centered just to the NW of the area today will settle over the state tonight, and then shift east to over the Atlantic for Saturday. Winds will become light overnight with clear skies allowing temperatures to drop into the lower to mid 40s north, and in the upper 40s to upper 50s elsewhere.
103 PM CDT Fri Mar 23 2018 Today: Main concern is thunderstorm potential in the vicinity of cold front in central KS late this afternoon.
138 PM EDT Fri Mar 23 2018 Building high pressure should maintain mainly dry weather through the weekend. Low pressure passing well south of the region could bring a rain or snow shower to the southern border of the forecast area. Models continue to trend southward with Saturday-Saturday night low pressure.
237 PM MDT Fri Mar 23 2018 Area of mainly showers expected to progress over the Panhandle/far se Wy into this evening as a cold front moves across the area.
1253 PM CDT Fri Mar 23 2018 To begin this forecast the central United States is under the influence of large-scale ridging with troughing along the west and east coasts. This light rain, which for the most part isn't reaching the ground, is the result of modest warm-air advection underneath the main ridge axis. Mid-level ridging returns temporarily late Saturday night before southwest flow aloft begins, signaling the beginning of a fairly cloudy and unsettled weather pattern.
This agreement generally holds through the forecast period, although the GFS develops a strong pressure rise/fall couplet north of the low which appears to result from convective feedback.
The main concern will the the breezy to strong winds today and then the wind shift with the cold front tonight.
A weak cold front will move south to near I-20 Saturday morning and stall, with a dryline mixing east across eastern portions of the Concho Valley and Northern Edwards Plateau by afternoon. Temperatures west of the dryline are expected to reach the lower 90s Saturday afternoon, with San Angelo likely to tie or just break the standing record of 93 degrees. Elsewhere, temperatures will be a little cooler north of the front, with highs mainly in the mid and upper 80s across the Big Country and in the upper 80s to around 90 over southeast sections.
314 PM EDT Fri Mar 23 2018 High pressure will remain across the region through Saturday.
Much of Saturday will be dry and cooler with brisk north winds becoming easterly by evening.
Warm front that surged through the Black Hills and southwestern SD has allowed temps to warm well into the 50s and even 60s in those areas, while much cooler 30s still entrenched across far northwest SD where areas of fog still persist. On Saturday, short wave ridge will cross the Northern Plains and bring and dry and relatively mild temps to the area. Next short wave trof rotating around the larger western CONUS trof will bring another round of showers (possibly mixed with snow) for Saturday night.
351 PM EDT Fri Mar 23 2018 High pressure will keep the area dry, but cool through the weekend.
633 PM EDT Fri Mar 23 2018 High pressure will keep the area dry, but cool through the weekend.
The next low pressure system will sweep across the Great Basin this weekend leading to strong winds in the East Sierra and across the Mojave Desert.
218 PM MDT Fri Mar 23 2018 An upper level trough over Colorado and the left exit region of the jet will continue to bring scattered showers, isolated thunderstorms and windy periods through early evening. Eventually subsidence and drying will move in behind the trough late this evening bringing mostly clear skies. A weak ridge moving across the state will result in mostly clear skies Saturday morning. An upper level trough digging south over the Pacific Northwest will increase Pacific moisture resulting in high clouds moving in late in the day.
414 PM EDT Fri Mar 23 2018 Water vapor imagery and RAP analysis show a ridge extending from the Plains to central Canada and a trof over eastern N America. This shouldn't be enough to cause any substantial hydro concerns, but certainly will cause some rises to areas rivers when combined with continued light snow melt in the days prior due to above freezing temps and mostly sunny skies. Ahead of an approaching low pres trof, winds may reach up to 30kt at times over eastern Lake Superior Mon/Tue. Behind the trof, winds should be under 20kt on Wed.
Numerous showers and isolated thunderstorms were occurring along the southern periphery of the low, and were impacting the coastal waters of NWRN CA and adjacent inland areas.
The upper level trough to our east will continue moving off the east coast as upper level ridging builds in.
On the positive side, the lower temperatures and higher relative humidity has kept fire weather conditions in check across the area Today. A cold front is forecast to move through the area beginning late Tonight and through the day on Saturday before stalling out near the Red River Saturday night.
444 PM EDT Fri Mar 23 2018 Extremely complex forecast as low pressure moves out of the central plains and into the lower OH valley by Saturday evening. Precipitation type is an extreme challenge as model soundings in the north show some deep near freezing isothermal profiles, which may hold through much of the day on Saturday.
Overnight lows tonight will be slightly cooler as skies clear, but will remain unseasonably warm. Clouds will be on the increase again starting in the late afternoon tomorrow ahead of a slowly digging trough across Nevada and western Utah.
Expect convection starting to initiate across the high plains the past hour to spread east through the late afternoon and evening hours. with cooler air filtering in across the local area tomorrow. A fairly active and seasonably cool start to the extended periods is anticipated as troughiness across the west. overnight low temperatures came down a couple of degrees and these cooler lows justified the continued mention of some light mixed precipitation across the region.
This will continue to feed warmer and more moist air (PWs ~1 inch) into the region, which will help low-mid level clouds to increase from the west overnight. This will help lows be considerably warmer (~10-15 degrees above normal) in the mid-upper 50s in the east to low 60s in the west. Winds could gust as high as 20-25mph or so, with some of the higher gusts in the Delta. As better moisture moves in, expect there to be enough lift and surface convergence, especially in the Highway 82 corridor, for some showers to develop.
Mid and high clouds spilling over the upper ridge to the west will move over the area tonight and Saturday. Lows tonight will be in the low/mid 40s inland and upper 40s coast.
A weak cold front will move across the ABI terminal towards the end of the period, shifting winds to a light northerly direction after 18Z. However, it may take into the early afternoon hours for KBBD and KJCT to finally break out of the low clouds. /issued 422 AM CDT Fri Mar 23 2018/ (Today and Tonight) Expect warmer than normal temperatures again today with gusty south winds across the entire region. (Saturday through Friday) Significant changes to the weather are expected through the next 7 days as an upper level low pressure system develops across the western U.
A large area of high pressure will expand across northern Florida tonight.
Saturday, increasing moisture levels will work with an upper ridge shifting east over the Plains to bring a return of above seasonal temps. At this point, with the return of data from bouy 42012, the higher heights/longer periods are not there yet, though will be on the increase through the weekend.
That activity will slide east as a warm front lifts leading to a break in the rain.
110 PM EDT Fri Mar 23 2018 High pressure will prevail through Saturday.
1225 PM CDT Fri Mar 23 2018 Satellite imagery this morning shows a large ridge axis extending north across the front range of the Rockies, leaving a northwest flow in place across our section of the Plains. This will help enhance the return flow from the Gulf today, sharpening up a warm front wallowing across western Missouri, likely bringing a lot of cloud cover to our region as isentropic upglide ramps up across the warm front this afternoon, along with the potential for some drizzle. Showers will be rather wide spread across northern Missouri later tonight as the trough moves across the Plains, though heaviest rainfall amounts will likely be in areas of northeast to eastern Missouri late tonight into Saturday morning.
/issued 244 PM CDT Fri Mar 23 2018/ Tonight, the upper level ridge that has kept the area warm and dry the past few days will continue to translate east as a Pacific trough starts to dig southward across the Pacific coast. Tomorrow, a weak backdoor cold front will move across the area. Backing winds and weak CAA will result in temperatures about 10 to 15 degrees cooler than today and calmer winds.
233 PM CDT Fri Mar 23 2018 Tonight, the upper level ridge that has kept the area warm and dry the past few days will continue to translate east as a Pacific trough starts to dig southward across the Pacific coast. Tomorrow, a weak backdoor cold front will move across the area. Backing winds and weak CAA will result in temperatures about 10 to 15 degrees cooler than today and calmer winds.
118 PM EDT Fri Mar 23 2018 High pressure builds this afternoon. An upper level low from northern Quebec will cross the region on Saturday.
344 PM CDT Fri Mar 23 2018 This afternoon a warm front exist over the southwestern CWA and south of the front temperature have crept up into the upper 60s. This evening a southwesterly LLJ will increase and over ride the warm front.
This feature will begin lifting north as a warm front overnight and will stall across northern Middle TN.
Persistent southerly flow in the low to mid layers of the atmosphere will bring another warm day on Saturday. Models indicate drier mid levels developing west during the afternoon on Saturday which will help temperatures there warm into the lower 90s.
This will lead to increasing cloud cover and warmer overnight lows.
In this tropical air mass, night time lows should only cool into the lower 70s.
High pressure builds toward the region tonight and will increase wind speeds over marine areas resulting in small craft advisory conditions.
151 PM CDT Fri Jun 30 2017 An upper ridge will be over, or near, the region through the next 7 days, and will ensure we stay at or above normal temperatures for this time of year. A cold front stretching from southeastern New Mexico, eastward to the Red River could provide a focus for thunderstorm development this afternoon and tonight, if not along a dryline which extends from the western Low Rolling Plains southward across the eastern Permian Basin.
Additional convection is forecast later tonight, as a cold front and another upper system move through the region. Some break will be seen later this afternoon to early evening, then models do have the cold front and additional upper level short wave energy to move through the region tonight and into the weekend, with additional rain and storms.
1106 AM MDT Fri Jun 30 2017 Current surface analysis shows high pressure over the northern Rockies with a cold front east of the area. Upper level analysis shows trough over the Dakotas, with high amplitude ridge along the west coast. Low amplitude upper trough is extending across the central CONUS this morning with the main axis slowly crossing eastern WY though SD into MN. Upper ridging will build in for the weekend with warm air advection returning.