Aikyam-Lab/Synoptic-Bench huggingface dataset:
333 PM EDT Sun May 7 2017 Even cooler conditions expected tonight with temperatures in the low 30s for most locations under clear skies and light winds.
High pressure prevailed across the Mid-State this morning, with chilly low temperatures in the middle to upper 30s at many locations. A few spots even slipped close to the freezing mark, with Allardt coming in with 33 degrees and Jamestown with 34. By late morning, temperatures, under a sunny sky, had warmed into the middle 50s to lower 60s, headed toward highs in the lower 60s to lower 70s. High pressure is expected to produce VFR conditions at Mid-State terminals through the forecast period.
A wet and warmer system for mid and late week. High pressure dominates the weather conditions across the region. The main feature to track in the near term will be the development of a quasi stationary warm front with numerous upper level disturbances energizing this boundary.
226 PM CDT Sun May 7 2017 Currently, a large amplitude ridge resides over the central plains in an omega blocking pattern with the western low over southern CA and the eastern low over the Great Lakes.
629 PM EDT Sun May 7 2017 A pressure ridge will extend through the northern Gulf of Mexico through the middle of the week. The ridge will direct a dry westerly flow into the forecast area, but there will be increased moisture in the north part of the area closer to a stalled front extending through North Carolina. Weak high pressure and drier air continue building into the forecast area and will result in clear skies overnight.
/issued 447 AM CDT Sun May 7 2017/ (Today and Tonight) The flow aloft over the forecast area will begin backing to the southwest through tomorrow as the upper ridge over the area moves eastward in response to a developing upper low over southern California.
Low pressure over the region will keep cool temperatures and unsettled conditions into Monday.
Flow around the upper level trough along the West Coast continues to split overnight. The northern branch of this system progresses eastward through the Northern Rocky Mountains while the southern portion remains in place as a closed low over Southern California through the short term period.
152 PM EDT Sun May 7 2017 A pressure ridge will extend through the northern Gulf of Mexico through the middle of the week. The ridge will direct a dry westerly flow into the forecast area, but there will be increased moisture in the north part of the area closer to a stalled front extending through North Carolina. Weak high pressure and drier air continue building into the forecast area and will result in clear skies overnight.
347 PM CDT Sun May 7 2017 Upper ridging over the area will result in a couple more warm and dry days.
638 PM EDT Sun May 7 2017 Aviation As high pressure settles over the Great Lakes, the wind will diminish and temperatures will fall into the 20s under clear skies. Even so, another cold night with lows around freezing is expected Monday night.
1147 AM MDT Sun May 7 2017 Currently around 4 am, Water vapor imagery showed upper low over southern California. Models place the upper low pressure system over the California Baja on Mon, providing a constant southerly feed of warm air and moisture for the forecast area. Scattered convection over the higher terrain early in the day is expected to then spread across all of the area through the aftn and eve. Temps will warm into the 60s and 70s for much of the area, while the far eastern plains will climb into the lower to mid 80s.
425 PM MDT Sun May 7 2017 Water vapor imagery showing pronounced closed low over southern California this afternoon. Seeing some shower/thunderstorm activity developing over Colorado in the southerly flow ahead of this low. Better chances for precip Monday as upper low tracks into Arizona and New Mexico Upper level diffluence Monday afternoon. This will interact with increasing low level moisture pooling into the east slopes of the Laramie Range and pieces of energy being pinwheeled off the low in our area.
330 PM EDT Sun May 7 2017 A high pressure ridge will bring mostly clear skies and temperatures in the thirties tonight. A warm front will work into the region Monday night bringing a chance of rain showers.
Brisk south flow of 10 to 20 kts combined with relative humidities 25 to 40 percent have ushered in warmer temperatures today mostly in the 80s. The mid tropospheric omega blocking pattern with closed low pressure over southern California. a ridge in the central part of the country and a closed low over Quebec/Ontario are responsible for the warm weather across the Midwest. the height falls will be most pronounced with the trough over Saskatchewan and southern CA. The low level jet is progged to increase to 40 to 50kts overnight and increasing moisture advection will result in increasing clouds. Once the isolated showers move out we are looking for even warmer temperatures Monday. Highs are forecast to push the upper 80s to lower 90s before a cold front pushes into northeast Nebraska.
Broad mid-upper level trof continues over the eastern third of the country today and tonight, with a deep layer dry airmass remaining in place over the area as observed on area 07. Lows tonight ranging from the low to mid 50s over inland areas to low to mid 60s at the coast.
An elongated area of high pressure stretching from far northeast Manitoba south to the Gulf Coast will gradually move eastward as the mid-level longwave ridge over the Great Plains approaches from the west. As it does, the warmer airmass to the west gradually builds its way into the Northland today into tomorrow. Temperatures will be warmer in NE MN today in the mid 50s to mid 60s inland, cooler in northwest Wisconsin ranging from the low 50s to near 60. Around Lake Superior temperatures will be cooler in the mid 40s to low 50s, with a lake breezy developing in the Twin Ports and up the north shore. Warmer Monday ranging from the mid 50s to upper 60s across the region, with relative humidity values still approaching the teens to mid 20s, especially in northeast Minnesota north of the Iron Range.
/issued 955 AM CDT Sun May 7 2017/ Very quiet weather pattern for the national today as high pressure conts to dominate the weather over the gulf region. /issued 331 AM CDT Sun May 7 2017/ This morning's surface analysis shows 1012 hPa high pressure extending all the way from the Gulf of Mexico northward into portions of Canada. Above the surface, 500 hPa height analysis depicts a cutoff low over southern California helping to build the downstream ridge centered over the Continental Divide. Additionally, an elongated, neutral tilt trough was centered over the East Coast.
Maxes a few degrees warmer, with L-M80s along the coast and U80s inland.
120 PM EST Mon Nov 13 2017 Precipitation will taper today as low pressure departs. Dry and cool conditions are then expected under high pressure until the next disturbance crosses by midweek. This may be more of a drizzle eventually, especially along the ridges, and will monitor. The high should maintain dry weather through Tuesday night as it slides east.
1152 AM CST Mon Nov 13 2017 A large area of MVFR stratus currently blankets the region, trapped within the low level anticyclone centered in the mid MS Valley. The low level anticyclone will gradually retreat eastward today with southeast-to south flow developing in its wake within the lowest 2kft. Due to the clouds, temperatures have held up overnight and thus will be starting warmer than previously expected. Continued eastward retreat of the low level anticyclone tonight will result in strengthening low level flow, better establishment of the WAA regime, and northeastward moisture transport. Model soundings show moisture deepening and nearly saturated conditions through the lowest 8 kft by 12Z Tuesday within a broad region of weak ascent.
309 PM EST Mon Nov 13 2017 Aviation section updated High pressure will be over the United States east of the Mississippi for the next few days.
To begin the period, upper trough off to our northeast and northwest flow still in place. Because of the clearing skies and colder air behind the front, lows tonight will range from the low to upper 30s which is around 5 degrees below normal. Also, there could be a few areas of patchy fog develop overnight as well as patchy freezing fog in areas that dip down to freezing. Highs will be a few degrees warmer with values ranging from the lower to upper 50s. A weakening and moisture starved cold front will approach by late Wed and will move through and out of the area Wed night.
125 PM EST Mon Nov 13 2017 Low pressure exits northeast of the area tonight. High pressure builds on Tuesday.
Tonight A brief update to discuss the potential for freezing drizzle near and north of I-94 in northcentral WI tonight. Near and north of I-94, temperatures look to be near freezing with dewpoints slightly below, making for an icing risk.
The cold front will be pushing through western Montana and north- central Idaho through the evening, bringing 4 to 6 inches of snow to Lookout and Lolo Passes by the early morning hours.
157 PM MST Mon Nov 13 2017 Water vapor shows upper ridge over the Rockies/Plains with very dry air over the Northern Plains. Upper trof is moving into the Pac NW. Temps have warmed into the lower 60s many areas of our cwfa given the dry air and southwest boundary layer flow.
Southerly flow will continue to increase ahead of this area of low pressure with a weak upper level disturbance moving through the region currently. WAA and moisture advection continues ahead of this boundary, with soundings showing deep saturation in the lower levels through late Tuesday. /Tuesday night through Monday/ Surface cold front will be over the northwestern part of the state by early Tuesday evening with mid-level PV anomaly over the northern Plains/Canadian prairies.
1105 AM EST Mon Nov 13 2017 High pressure will gradually build into the area, from the west, tonight and Tuesday, with mainly drier and seasonably chilly weather. This afternoon and tonight, as a N-NW flow develops in the lower levels, and moisture also gets trapped underneath a subsidence inversion, plenty of stratocumulus clouds are expected to linger over most of CNY, with skies becoming partly cloudy over portions of NEPA. During the day Tuesday, as ridging continues to build in surface and aloft, the shallow moist layer in the lower levels should erode, resulting in increases sunshine by/during the afternoon. A large high pressure along the entire East Coast in control this period with a dry and cool airmass.
Even into Tuesday, the low level moisture does not move out of the area until after noon. There are a few mainly weak upper level waves that move through the area and bring weak cold fronts through the area.
220 PM MST Mon Nov 13 2017 Primarily zonal flow is prevailing under a flat ridge of high pressure, with warmer temperatures than seen yesterday due to lack of dense cloud cover. Temperatures will remain about 10 degrees or so above normal with cooler overnight lows near or slightly above normal.
258 PM EST Mon Nov 13 2017 High pressure will continue to build into the area from the north through the short term. The upper level trough is currently pivoting across the region with subsidence flow on the back end. Low temperatures will be a couple degrees below normal with mid/upper 30s in the high elevations to mid 40s toward south GA. The high will begin to build south into north/central GA through the day. Highs will climb close to 60 degrees across the higher terrain to the mid 60s in central GA. Tuesday night should be quiet weather-wise as mid/upper level ridging builds into the region. Lows again, below normal in the upper 30s/low 40s area wide; cooler across far northeast GA.
/15/ Strong high pressure is building over the ArkLaMiss this morning and this will continue through the day. In the wake of the front, high pressure will build into the region, along with some cooler drier air.
123 PM EST Mon Nov 13 2017 Low pressure tracking off the Mid-Atlantic coast will pass well south of the area tonight.
Satellite shows the cold front associated with an upper low west of Vancouver Island has moved onshore, and is near Roseburg. The coast, and ridges over our entire CWA will also see close to a half inch of liquid equivalent.
Watching the lower clouds in Nebraska and patchy lower clouds into Watertown SD area to see how they move. Temps today appear warmest S RRV with now snow with highs 45-50 also a bit warmer eastern fcst area east of ROX-GFK-VCY where a bit more southeast wind exists. Coldest temps and likely to not reach freezing is the DVL-Langdon area where winds are light easterly. Most guidance has been too cool lately in the non-snow areas, and went with the higher side of guidance.
A band of -ra with a cold frontal passage will move east of KPSC, KPDT, and KALW between 22-01z. Patchy fog and stratus persist in the Lower Columbia Basin. A cold front is moving through the area this morning.
207 PM EST Mon Nov 13 2017 Drying has occurred in the wake of the cold front.
Low temperatures will bottom out in the lower 60s across the region.
927 AM MST Mon Nov 13 2017 Flat upper level ridge is building over the forecast area in moderate westerly flow aloft. 12Z Denver sounding showed a shallow inversion and the fast warmup has already been realized across most of the Denver Metro area with temperatures reaching the lower 60s. Overall, winds in the high country should relax over the higher peaks, but some breezes also push into valley locations during max heating/mixing. An upper level trough in the westerly flow aloft will track across the Northern Rockies Tuesday. Westerly flow around the base of the trough will bring mild temperatures and also breezy conditions to northern Colorado. A cold front will push into northern Colorado late Tuesday afternoon.
Meanwhile at the surface, high pressure will continue to ridge southwestward from the northeast states into the southeast U.
Models forecast some clouds to move back into the area tonight, but probably will be mostly higher clouds as the lower clouds should move back into the area beginning Tuesday morning. However, the next weather system will be moving toward the area tomorrow as the high pressure continues to slide to the east.
/issued 938 AM EST Mon Nov 13 2017/ Local surface analysis shows an inverted trough of low pressure over south Florida with good convergence band at northern apex of trough. Models gradually weaken this trough while moving it southwestward into the gulf today.
Drier air from high pressure over the southeast U. Warmer than average temperatures will continue, with mid to upper 60s at night and lower 80s during the day.
Dry weather with periods of high clouds will persist this week as high pressure remains over the region or situated just to our south. A storm system passing to the north later in the week could bring slightly cooler temperatures and some breezes to the Southwest.
1222 PM EST Mon Nov 13 2017 Low pressure tracking off the Mid-Atlantic coast will slide well south of the region today into tonight.
Patchy drizzle or light rain remains possible across southeastern portions of our CWA Tuesday morning in warm-air advection regime with a better chance over the same area later Tuesday night as a cold front begins to sweep through the CWA.
High surface pressure and an upper level ridge brought warmer than normal temperatures to many northeast Montana locations today. Main forecast challenge in the short term period focuses on the chances for a return to some freezing fog tonight. Over the last two nights, widespread dense freezing fog has been a problem, and the last holdouts only left today around noon up near the Canadian border along local creek beds. Felt it was okay to include patchy fog over the lower river valley locations through the overnight and morning hours.
Temperatures struggled to warm into the lower 50s, while light south breezes persisted. This broad ridging pattern will keep temperatures mild over the next several days.
Uncertainity abounds in the exact trends, but given warmer and more moist airmass moving in, some snow melt conditions should favor fog formation over much of eastern ND.
1221 PM EST Mon Nov 13 2017 Drying will occur behind a cold front today.
Lows tonight are expected to say generally above freezing, precluding a freezing drizzle threat. Forecast focus on showers Tuesday night then an intense cyclone to impact much of the Midwest/Great Lakes late this week and into the weekend.
A steady stream of Pacific moisture on the northern periphery of an upper ridge over the Gulf of California will continue to supply abundant cloud cover today. /issued 450 AM CST Mon Nov 13 2017/ Weak backdoor cold front has stalled out near or just north of I-20.
207 PM EST Mon Nov 13 2017 High pressure will gradually build into the area, from the west, tonight and Tuesday, with mainly drier and seasonably chilly weather. This afternoon and tonight, as a N-NW flow develops in the lower levels, and moisture also gets trapped underneath a subsidence inversion, plenty of stratocumulus clouds are expected to linger over most of CNY, with skies becoming partly cloudy over portions of NEPA. During the day Tuesday, as ridging continues to build in surface and aloft, the shallow moist layer in the lower levels should erode, resulting in increases sunshine by/during the afternoon. A large high pressure along the entire East Coast in control this period with a dry and cool airmass.
High moisture depth overnight should be confined to the lowest 100mb. H85 temps are prog to be a degree or two warmer on Tuesday. with max sfc temps also being a couple of degrees warmer as a result.
225 PM CST Mon Nov 13 2017 Forecast concern in the near term remains timing of stratus development/advection over the region tonight and threat of freezing drizzle into parts of west central WI. BUFKIT cross sections showing cloud deck should be thick enough to generate mist/drizzle, Continued the lower end chance PoPs for this over the eastern half of the area into Tuesday. Surface temperatures may be around freezing/slightly below over a portion of west central WI at least for part of the night. Ahead of the front, we should maintain the lower clouds through most of the day Tuesday as the incoming upper trough approaches.
Strong high pressure is building over the ArkLaMiss this morning and this will continue through the day. In the wake of the front, high pressure will build into the region, along with some cooler drier air.
256 PM EST Mon Nov 13 2017 High pressure over the Great Lakes will build east tonight and Tuesday bringing drier air and light winds.
Flow in and around the high has been relatively weak, with little mixing in the boundary layer taking place.
1120 AM CST Mon Nov 13 2017 Increasing thin cirrus has only had minor effects on the freezing mist/fog this morning across central MN and WI. Temperatures will be above freezing, except early evening toward Rice Lake and Ladysmith where a brief period of freezing drizzle is possible. No icing is expected with temps rising above freezing relatively quickly following the onset. The GEM/EC have been slower for the late week system, and has allowed for much warmer air to move northward.
Skies have cleared up across the area behind a dry cold front. Expect gusty northeast winds this afternoon in the front's wake followed by cooler overnight temperatures.
245 PM CST Mon Nov 13 2017 A broad area of high pressure positioned off to the northeast is providing southerly flow over most of the CWA today. The ridge axis from the high pressure is also extending into the region. This is trapping the low level moisture over the region. Mid level flow is out of the southwest which is over running the low level moisture.
1233 PM EST Mon Nov 13 2017 Cloudy and cool weather will affect the region today as high pressure slowly builds in. The center of the high will cross over the region on Tuesday.
224 PM CST Mon Nov 13 2017 Wx map shows high pressure continuing to ridge over the area as the main center builds over the Eastern U. Temperatures this afternoon in the lower to mid 70s.
A steady stream of Pacific moisture on the northern periphery of an upper ridge over the Gulf of California will continue to supply abundant cloud cover today. Eventually, albeit temporarily, we should see the lower ceilings scatter out but high thin cirrus will be plentiful into the overnight hours. /issued 450 AM CST Mon Nov 13 2017/ Weak backdoor cold front has stalled out near or just north of I-20.
Sunny day expected with clear skies and temperatures nudging a few degrees warmer than yesterday. Gusty winds in Livingston will increase to 50-60 mph this evening as lee side pressure falls continue ahead of an approaching low pressure system. Weak high pressure ridging will be over the forecast area today. Temperatures will be slightly warmer today as lee-side troughing sets up bringing a downslope flow. Pressure gradients tighten along the Upper Yellowstone and Stillwater Valleys this afternoon and evening due to lee-side troughing ahead of a Pacific cold front that will move across the forecast area tonight. Highs for Tuesday will be just a few degrees cooler than today.
Dew points reached the lower 40s today from OGA to ANW and points east and mid 40s in NW KS. Trended max temps up in the west due to downslope flow, a 15C thermal ridge, and decent mixing. A cold front approaches NW Neb. A weak cold front will move through the area Tuesday night.
1252 PM EST Mon Nov 13 2017 Low pressure exits northeast of the area tonight. High pressure builds on Tuesday.
Tweeked temps a few degrees mostly along the snow/no snow interface where temps will be a tad warmer. Most guidance has been too cool lately in the non-snow areas, and went with the higher side of guidance.
Expect cumulus clouds to dissipate with loss of heating late this afternoon, but high clouds will persist across the region overnight as Pacific moisture rotates around an upper ridge southwest of the region.
An approaching trough and associated cold front will begin to move into eastern Oregon this afternoon, and into the Treasure Valley by this evening. Shower activity will be found behind the frontal passage, with snowfall possible over the higher terrain. Cold front extending from the low toward N. Biggest concern will be the strong winds out ahead of this front with model boundary layer winds on the order of 25 to 30 mph across portions of Malhuer and Harney counties and extending into the higher terrain of Owyhee county. some gusts reaching over 40 mph possible but mainly across the higher terrain.
Wind speeds will increase and become gusty by late morning and during the afternoon, as surface pressure gradient increases with lee trough development to the west. Temperatures will be warmer on Tuesday area wide, with highs expected to be in the lower to mid 70s.
322 PM CST Mon Nov 13 2017 The forecast area was between exiting high pressure near the lower Great Lakes, and developing low pressure in the lee of the Rockies in Wyoming. Weak warm air advection was occurring ahead of the low. There is a very small chance of some freezing drizzle over northwest Wisconsin. The southwesterly flow continues Tuesday ahead of the low pressure system that has formed over the Canadian prairies. Some drizzle is possible ahead of the front, with the freezing drizzle over the eastern edge of the Wisconsin forecast area in the morning.
313 PM CST Mon Nov 13 2017 As of 20Z Monday afternoon, mid-level ridging continues to overspread the central Plains. Upstream of the ridge, a mid- level trough was entering the Pacific northwest. Surface ridging across the midwest continues its slow movement to the east.
Temps are a bit below normal under a cool NE breeze with readings ranging from around 50 along the KY/MO borders to the lower to mid 60s across parts of North Mississippi. Temps will be slightly warmer on Tuesday with a plenty of sunshine. Will start to see increasingly clouds Tuesday night as the next cold front approaches.
The low clouds are still hanging around. Afternoon highs should be on the lower side of guidance.