Aikyam-Lab/Synoptic-Bench huggingface dataset:
950 PM EDT MON JUL 4 2016 High pressure becomes centered well off the mid atlantic coast allowing a continued south flow and low pressure to pass far enough south of New England late Monday night into Tuesday to keep our region dry. Otherwise, warmer weather is expected through midweek.
gusty southwest flow will prevail Tuesday with the highest gusts forecast at KLVS and KTCC between 25-30kts.
Deep convection firing along the surface trof trough west of Rolette and Rugby with Severe Thunderstorm Warnings along and ahead of that area. Following trof passage this evening. expect a west to northwest blayer flow and some slight drying in the low levels. Flat and muddy H5 flow will bring second weak shrtwv across the area early on Tuesday so expect sct tstms but somewhat cooler overall temps.
/issued 356 PM CDT MON JUL 4 2016/ Latest UA analysis and WV imagery show an impulse translating east over the lower MS valley on the nrn periphery of a broad ridge acrs the srn CONUS. Outside of convection, temperatures have climbed into the lower 90s with heat index values between 102 and 107. The ridge aloft will gradually build back over the region through the week. Meanwhile, sfc features will change little through the period as high pres continues to ridge fm the wrn Atlantic west over the Gulf. Fcst temperatures will continue to run near to abv normal, with lows in the middle to upper 70s/nr 80 and highs in the lower to middle 90s.
1216 AM EDT TUE JUL 5 2016 High pressure becomes centered well off the mid atlantic coast allowing a continued south flow and low pressure to pass far enough south of New England late Monday night into Tuesday to keep our region dry. Otherwise, warmer weather is expected through midweek.
959 PM EDT MON JUL 4 2016 A warm front will lift north and track east over the Ohio Valley tonight. High pressure will build behind it on Tuesday, and a return to southerly flow will occur Tuesday night.
626 PM CDT MON JUL 4 2016 Water vapor imagery shows a weak upper impulse tracking across eastern OK into southern MO, with a much more potent trough over southern British Columbia/Alberta. Will keep storm chances in Thu night across most areas with the higher chances across southeast KS where capping will be minimal.
853 PM EDT MON JUL 4 2016 Low pressure over KY will move east of the forecast area tonight and move off the mid atlantic coast Tuesday.
909 PM MDT MON JUL 4 2016 Meso-analysis indicates cold front just entering the western portion of our CWA out by Livingston. Locations with the highest chances will be along and south of a Baker-Miles City-Billings Livingston line. A weak cold front will also move through the forecast area this evening bringing cooler temperatures for Tuesday. Temperatures will be cooler with readings in the upper 70s to lower 80s.
712 PM EDT MON JUL 4 2016 Low pressure over KY will move east of the forecast area tonight and move off the mid atlantic coast Tuesday.
Mid and upper trough axis still back in Missouri and western Arkansas with some opening up to the trough last few hours but little in the way of eastward progress.
629 PM CDT MON JUL 4 2016 An area of low pressure will remain just west of the CWA tonight into the day Tuesday before pushing across and east of the area Tuesday night.
942 PM EDT MON JUL 4 2016 A cold front will cross the region later Tuesday and stall.
(Issued 318 PM CDT MON JUL 4 2016) A warm front extended from sw MO thru the Ohio valley while an upper wave is over the midwest. Temps across the Tn valley at 300 pm were in the low to mid 90s with mid/upper 60s dewpoints.
Relatively dry air in the lower level is infiltrating these showers, suppressing development resulting in short lived thunderstorms. The Atlantic ridge will remain north of the Keys and the Saharan Air Layer will be the main modifier for the precipitation forecast.
Hot upper level ridge will be the dominant feature with isolated thunderstorms possible through the period.
The snow associated with the cold front will move quickly off to the east/southeast tonight, as arctic high pressure builds in. Deep upper low will continue to feed very cold arctic air into the region through the period.
A warm front will lift north across the area late Tuesday night through Wednesday.
1254 AM EST Tue Dec 13 2016 High pressure will provide dry conditions tonight with lows in the teens to low 20s. An arctic cold front will bring increasing chances for a period of light snow to areas mainly along and southeast of Route 24 on Tuesday.
South winds 10-15kts ahead of tonights cold front with winds shifting out of north after 06z around 10kts.
A stronger cold front will push across the region Wednesday night. A stronger upper level trough will dig into the western high Plains by this weekend. sending a strong cold front southeast towards our region this weekend.
Areas of patchy fog and light rain or drizzle will also be seen as a cold front slowly moves into AR from the north. Today Through Wednesday Cold front currently located southeast of the state this afternoon, with mainly northeast winds seen across the area. Clear sky conditions in place this afternoon will quickly be replaced by overcast conditions in advance of our next cold front expecting to come through the area tonight through Tuesday morning.
Overnight lows will drop into the lower to mid teens. high pressure building in behind the cold front will shift off to the east of the region. strong surface ridging remains in place over the Plains region.
At the surface, an arctic cold front is forecast to move slowly southwestward. The aforementioned cold front was draped roughly from Bill, WY, to the Dawes/Box Butte county line in NE at 21z. Warmer overnight lows out west, approaching zero over east central WY and the northern NE Panhandle where the front has passed and winds are expected to be light.
353 AM EST Tue Dec 13 2016 A trough of low pressure will bring a wintry mix of precipitation today.
Drier behind last night's weak cold front. Pacific warm front will spread significant snow into Harney County Tuesday night then across all of eastern Oregon and most of Western Idaho by Wednesday morning. The warm front will raise snow level to 4000 feet MSL late Wednesday and even higher Wednesday night.
1024 PM CST Mon Dec 12 2016 Latest 20z surface analysis shows cold front extending from southern Canada into northeast Nebraska. A frontogenetical band of snow has developed along the cold front per the latest mosaic radar. Surface cold front is expected to move across the forecast area this evening.
431 AM EST Tue Dec 13 2016 A nearly stationary front across Georgia and coastal South Carolina will move back north as a warm front today. Rain chances will increase through Wednesday as weak low pressure moves through the area along the front. A cooler and drier air mass will return late in the week. A weak cold front will be stalled just south of the forecast area this morning. Morning lows tonight will range from the lower 40s north to the lower 50s south. For tonight, a stronger cold front will approach from the west.
Temperatures will moderate slightly Tuesday and Wednesday as high pressure builds aloft and the air mass will continue to dry. A ridge will be over the West Coast by Wednesday and moisture ahead of the next weather system will be moving underneath the ridge into Southern Idaho and could cover will increase of the southwest zones although low levels will remain dry.
colder air moves in behind tonights cold front. High temperatures expected to reach in the low to upper 20s. Clouds slowly decrease a bit during the night as weak upper ridging moves toward the area from the west.
Sharp cold front is currently moving through N KS and will push through a good portion of NE OK before sunrise.
Still some clouds hanging over the higher peaks along the Continental Divide and across the Sangres, though with low level dewpoints tanking into the single digits, suspect any precip has been flurries at most. Along the Continental Divide, moisture increases late in the day, which should reinvigorate some -shsn activity toward sunset, especially over the higher peaks of the Sawatch range.
958 PM MST Mon Dec 12 2016 Upper level analysis has large upper low in central Canada with cyclonic flow across much of the CONUS. At the surface, strong Arctic high pressure has settled into the Northern Plains. Upper low in central Canada moves very little. High pressure will remain over the area on Wednesday, continuing the dry weather and colder than average temperatures.
This stalled boundary will be the focus for additional shower development Tuesday as low pressure combines with upper level impulses. At this time, ridging into the state will trap colder temperatures over NE Georgia Tuesday, with highs only in the low 50s.
1152 PM EST Mon Dec 12 2016 Low pressure will exit across the maritimes overnight. Weak high pressure will build across the region on Tuesday. An arctic cold front will cross the area Wednesday night followed by bitter cold air for the end of the week. Highs will be in the lower 20s north and upper 20s to lower 30s south. A cold front is expected to move across the region early Wednesday with high pressure building in later in the day. This ridge will move quickly to the east by early Wednesday Evening as low pressure passes to the northwest of the state.
1132 PM CST Mon Dec 12 2016 Another day with a cold front moving through the Plains. The main system is well off to the north in Canada which helps swoop in cooler air once more. The upper levels indicate a zonal flow regime while the lower levels indicate a ridge to follow in advance of the system moving onshore in the middle of the week. In the wake of the cold front, highs will be in the 30s for most of the week.
/Tonight through Tuesday/ Strong short wave energy and focused area of theta-e advection is moving into central Iowa this afternoon and early evening in advance of an arctic cold front that will arrive tonight. A dry layer remains below the region of forcing as evidenced by the high temperature and dew point depressions of 10 to 17 degrees with the dry layer extending up to near 8 kft. Another region of snow is moving south along the cold front and is moving into far northwest Iowa and is associated with a region of expanding stratus that will enter northern Iowa. Temperatures will fall below freezing again tonight over the north.
Current water vapor imagery and RAP upper air analysis indicates mostly zonal flow aloft across the CONUS with a few low amplitude troughs. Further to the north, there is a robust closed low across Canada diving down into the Northern Plains and this will bring another shot of arctic air to the region but this will be mostly beyond the short-term forecast range. Model soundings indicate an inversion just above the surface with drier air in the low to mid levels. For today, a low amplitude southern stream wave will lead to southwesterly flow in the low to mid levels with the stalled surface boundary making a push to the north. The southern stream wave will eventually move through the area later in the day with westerly flow taking over in the low to mid-levels.
Expect these temperatures to hold or perhaps slight rise a little more through the afternoon before diurnal cooling takes effect and temperatures drop below freezing. likely to remain below freezing through the rest of the week. The first area is across southern and central Missouri where some low level convergence along the cold front as well as some weak mid level vorticity could form a few showers. Forecast soundings for that area indicate much dry air in the lowest 6,000 to 8,000 feet, which will mitigate much in the way of surface precipitation. Likewise with the southern/central Missouri activity very dry air in the low levels will mitigate much precipitation from reaching the surface. Temperatures will remain below freezing through the rest of the middle part of the week as the cold air settles in.
Low clouds mark the leading edge of a surface cold front crossing southern WI early this morning.
323 AM EST Tue Dec 13 2016 Rapidly moving low pressure will spread snow over the Upper Ohio Region on today and will usher in an arctic airmass for late week. Another system will move in for the start of the weekend, bringing a wintry mix and some warmer air.
302 AM CST Tue Dec 13 2016 Cold front had pushed well south of the area and extended from northwest Illinois into southeast Kansas at 08Z.
A large upper level low pressure area in central Canada will move slowly southeast throughout the short term. At the surface, high pressure off to our west and northwest will slowly build into our region into Wednesday night.
Mostly cloudy tomorrow with average afternoon temperatures topping out in the upper 60s up north to the low to mid 70s closer to the Gulf.
358 AM CST Tue Dec 13 2016 At 3 AM, the arctic cold front had moved south into southern Iowa. Another arctic cold front will move southeast across the area tonight.
Further east closer to the high pressure temperatures are slower to warm up. Mid level frontogenesis will increase and pass over northern KS in the trough axis. Although the lower levels remain fairly dry so it may only produce flurries at the most.
A low pressure system over the Great Lakes will push eastward helping the remnant boundary move away from our region and allow drier air to push over the peninsula. As the low pressure associated with the frontal system pushes north and eastward, the front will struggle to have much impact to South Florida other than increasing moisture which could bring some showers back into the forecast picture late in the week. The weekend appears to remain drier, with high pressure over the Gulf at the mid-levels and over the eastern United States at the surface. Temperatures through the period should remain on the warmer side, though the drier air later this week will provide some cooling across the southern part of Florida.
A secondary area of broad high pressure will expand across the central MS valley through the middle of the week.
338 AM EST Tue Dec 13 2016 A nearly stationary front across Georgia and coastal South Carolina will move back north as a warm front today. Rain chances will increase through Wednesday as weak low pressure moves through the area along the front. A cooler and drier air mass will return late in the week. Early this morning: A weak cold front will be stalled just south of the forecast area this morning. Morning lows tonight will range from the lower 40s north to the lower 50s south. For tonight, a stronger cold front will approach from the west.
124 AM EST Tue Dec 13 2016 Rapidly moving low pressure will spread snow over the Upper Ohio Region on today and will usher in an arctic airmass for late week.
In place of the low clouds, sky cover of a higher variety was already streaming in from the west. However, it may be briefly mixed with a little light snow, sleet, or freezing rain across roughly the northern half of the area within a few hours of daybreak. With the very light and spotty nature of precipitation and temperatures warming above freezing during the early morning, no significant impacts are expected at this time. The passage of a cold front should bring a return to dry weather and gradual clearing from west to east Tuesday afternoon.
Once the low clouds did dissipate, extensive mid/upper level clouds replaced them keep the region cloudy for the most part. Tue night-Thu: A deep upper low over/vcnty of Hudson Bay will bring cold air into the central/Midwestern states. Fri night-Sat: While timing is still in question, a strong cold front will move through during this time.
A ridge of high pressure will then move in later tonight into early Tuesday.
133 AM EST Tue Dec 13 2016 High pressure will build east from the Ohio Valley into Pennsylvania overnight.
206 AM EST Tue Dec 13 2016 High pressure will build east from the Ohio Valley into Pennsylvania overnight.
343 AM CST Tue Dec 13 2016 Current observations show a cold front in the Texas Panhandle which is moving south towards the Permian Basin early this morning. Another cold front will follow Wednesday night and with deeper cold air behind it will have more of an impact.
414 AM EST Tue Dec 13 2016 A cold front will move across the area today, likely accompanied by a period of snow, especially along and southeast of U. High pressure will build into the area tonight providing dry weather and very cold temperatures. Another cold front will move across the area Wednesday bringing even colder air into the area along with lake effect snow over northern portions of the area.
Overnight lows will drop into the lower to mid teens. high pressure building in behind the cold front will shift off to the east of the region.
A warm front will lift North overnight spreading the conditions over the Four State Region. Light and variable winds associated with the surface boundary and associated low pressure system as they move North to Northeast and becoming Northerly on Tuesday through the day.
High pressure across the region will keep a relatively light flow across the waters through tonight and Tuesday, with no headlines expected. A warm and moist air mass will continue to override the relatively cooler waters and this should continue to support sea fog across portions of the Gulf waters as well as Tampa Bay.
The stronger of these systems - a closed low over Nunavut - will establish general troughiness over the eastern 2/3rds of the US over the next 24 hours. The second, a closed low slowly moving south along the coast of British Columbia will open up a tap of moisture from the Pacific Ocean into the Great Basin and Central Rockies. Surprised to see how much further north forecast models are bringing the energy from this closed low off of BC in today's 12z runs starting Tuesday night. Amounts are looking like they will be generally in the 4 to 8 inch range above 8000 ft from the Park Range south to the Elk Range with lesser amounts in the high valleys like Aspen, Steamboat Springs, and Vail.
214 AM MST Tue Dec 13 2016 Upper low spins over northern Manitoba, and a 150-kt jet streak is moving over the central plains. At the surface, high pressure sits over the northern plains. With cold high pressure over the region, today will be mainly dry. Low-level trough will begin approaching the region Wednesday night.
Arctic high pressure will build into Central Montana today. Meanwhile, there will be enough of a surface pressure gradient over Northeast Montana with a low pressure system to the east that it will be breezy over the area. NW winds will diminish this evening as high pressure continues to build into Northeast Montana.
This frontal system may move a little further north overnight, then become stationary before moving back south as a cold front late Tuesday into Tuesday night. A digging trof over the core of the country will allow for a re-enforcing and with soundings indicating significant drying finally taking place across the area.
Cold front will start lifting nwd on Wednesday as ridge starts pushing nwd through the Great Basin.
342 AM CST Tue Dec 13 2016 A weak cold front was sliding southward through the area early this morning behind the latest disturbance cruising through Missouri and heading towards the Ohio Valley later today. The next cold front is scheduled to move through the area on Wednesday during the daytime. The timing of the front will lead to little confidence in the high temperatures forecast on Wednesday.
A stalling arctic cold front has bought moderate to heavy snow showers from about KMSO to KHLN to KBYZ this evening.
Arctic high pressure and Wind Chill highlights are the main focus of the short term period. Did bump temperatures a little lower tonight and leaned toward the higher previous forecast guidance for winds on Tuesday. A little warmer on Tuesday with highs mainly in the single digits above zero.
On the other hand, heavy snow continues to fall with blowing and drifting occurring along Highway 83 through the Seeley/Swan, and along the Highway 2 corridor from West Glacier to Essex and Marias Pass. The warm frontal weather system is forecast to move in from the southwest, and cold air will remain in place, which is a good setup for widespread mountain and valley snow.
447 AM EST Tue Dec 13 2016 A cold front will move through the area late this afternoon and early this evening bringing snow showers and colder air.
18Z surface data has high pressure over the mid-Mississippi Valley with an arctic front running from the arrowhead of Minnesota into northern Nebraska. Quiet and cold conditions with slowly increasing clouds will be seen through sunset as high pressure moves into the Great Lakes.
108 AM EST Tue Dec 13 2016 A nearly stationary front across Georgia and coastal South Carolina will move back north as a warm front today. Rain chances will increase through Wednesday as weak low pressure moves through the area along the front. A cooler and drier air mass will return late in the week. Early this morning: A weak cold front will be stalled just south of the forecast area this morning. Morning lows tonight will range from the lower 40s north to the lower 50s south. For tonight, a stronger cold front will approach from the west.
531 AM CST Wed Nov 23 2016 The region is currently under a broad upper level trough with light surface winds. This stratus deck may erode some from the southwest later tonight as winds become southerly ahead of a low pressure system. With temperatures near freezing, believe snowfall amounts will range between a dusting to one inch for most areas. Slightly higher amounts will be possible in the eastern portion of the CWA where better low level moisture and cooler temps are possible.
403 AM CST Wed Nov 23 2016 (Today and Tonight) A weak cold front has pushed southward across the entire forecast area early this morning. drier and slightly cooler air has moved into west central Texas. Weak ridging will build in over west Texas. Will see slightly cooler afternoon highs today, generally in the 60s, with sunny skies.
1052 AM EST Wed Nov 23 2016 A warm front today. A weak cold front Thursday.
644 AM EST Wed Nov 23 2016 Dry high pressure will gradually shift east today ahead of a weak front, with limited moisture, that will slowly move through late tonight and Thursday.
738 AM EST Wed Nov 23 2016 Update An area of low pressure over Missouri this morning will track northeast through the Great Lakes region today. A window of an hr or two of freezing rain could exist. The freezing line is currently ahead of the advancing area of precipitation. We are planning on issuing an SPS as the precipitation moves into the sub freezing areas in a few hours. The route 10 region could be close to freezing still so a risk for icing may exist.
Quite impressive satellite imagery early this morning with a distinct cold front now inland in WA and OR, and another cold front in the North Pacific 140W. KCBX radar shows pcpn increasing in eastern Oregon as the first cold front approaches.
1012 AM EST Wed Nov 23 2016 A low pressure system will move through the area today into Thursday.
914 AM EST Wed Nov 23 2016 A warm front will bring some rain chances to the region this afternoon.
1004 AM EST Wed Nov 23 2016 Low pressure over the mid Mississippi Valley will weaken as it moves towards the Great Lakes today.
607 AM CST Wed Nov 23 2016 /12Z TAFs/ A cold front moved through all TAF sites overnight, and northwest winds will prevail throughout the day. Wind speeds will subside at nightfall as a ridge of high pressure transits the region. As the ridge axis passes to the east Thursday morning, winds will become light and southerly. /ISSUED 332 AM CST Wed Nov 23 2016/ A cold front that extended southeast of a Sulphur Springs to Austin line at 3 am will exit the forecast area before daybreak.
1052 AM EST Wed Nov 23 2016 A warm front will bring some rain chances to the region this afternoon.