Aikyam-Lab/Synoptic-Bench huggingface dataset:
314 PM CST Sat Dec 3 2016 Snow is now pushing into far southwest Minnesota from South Dakota, Iowa, and Nebraska as a trough lifts northeast from the central Plains. Most of the snow will fall late tonight and Sunday in those locations, when temperatures may be warming into the low to mid 30s.
High pressure will be taking over today in wake of the storm system moving slowly through the southeastern United States. The high is more of Pacific origin, so temps will remain on the mild side for this time of year. In fact, once the high moves off to our east Tuesday, winds will turn more southerly and temps will likely climb into the mid/upper 50s. Wrap around clouds will affect many areas east of the MS River today, but hopefully will get back to some sunshine area wide on Tuesday if we can scour out the low level moisture.
The upper low currently behind the deadly storm system impacting the southeastern U. A partially cloudy day with a subtle veering of the lower level southerly wind will provide a familiar day of above normal warmth. back in the lower 80s by day's close.
The drizzle around the area this morning should dissipate early as a mid level trough pushes through. Surface ridging arrives this afternoon and tonight with low level moisture remaining quite deep at 4-5kft.
A ridge of high pressure will build over the state on Monday and result in a mostly clear sky. A northwest wind overnight will turn to the south on Monday in response to developing low pressure across the Central High Plains. These gusty northwesterly winds are the result a strong pressure gradient from an intense low pressure system that had moved into the southeastern United States as of 3 PM. Highs Monday will be around 60 northeast to the lower 70s southwest.
Scattered showers and a few thunderstorms are still possible over South Florida this morning, before drier and cooler weather work into the area from the north for this afternoon into Tuesday.
The broader trough associated with the latter system is presently moving onto the West coast and a subsequent eastward translation through the Interior West will occur today. A change over to all snow will occur from northwest-to-southeast across the area Tuesday night as the cold air deepens with the passage of the surface cyclone to the east.
The cold front will lag behind the squall line currently approaching the Lower Keys, arriving around 700 am. Cooler air will advect over the Keys on the heels of the front. A tight pressure gradient with cooler air moving over warm water around the Keys, will keep strong winds across the area through this evening. The low that produced the cold front and severe weather across the Deep South the past few days will move northeast today. A new low pressure system will cross the Colorado Front Range midday Tuesday. These book end lows will drive a developing ridge northward across the Central Gulf of Mexico Tuesday and move eastward. This ridge will be the catalyst for decreasing winds over the area. With the cooler air arriving this morning, expect drier air to filter in as well.
344 AM EST Mon Jan 23 2017 A warm front will lift north into the region tonight with low pressure moving east across the area Monday.
and freezing rain across the North Country on Monday Night into Tuesday.
241 AM EST Mon Jan 23 2017 A strong low pressure center in the western Carolinas this morning will move into eastern North Carolina this afternoon and be off the Mid-Atlantic Coast tonight. There will be considerable warp-around moisture today supporting a chance of showers but drying will occur tonight as the low moves farther away. Breezy conditions will be associated with the low today and tonight. There will be less wind as a dry pressure ridge moves into the area Tuesday.
Snow levels will lower to valley bottoms as the associate cold front moves through Monday night. Snow showers along with a very cold airmass will follow the cold front Tuesday and Tuesday night. An impressively deep upper low and associated trough located off the WA coast this afternoon. Trough axis slides through mid-day Tuesday with isolated snow showers and a very cold airmass.
At the same time, the upper low is spinning currently over Atlanta. We will continue with rain showers for the remainder of the overnight hours wrapping around the cold upper low. Monday will feel much cooler with decent cold air advection. Winds are expected to taper off during Monday night as gradients relax with a short time of ridging and a gladly accepted break from rain and storms.
248 AM CST Mon Jan 23 2017 Upper-level ridge to build across the region today allowing for northwest flow aloft and mostly sunny skies. Temperatures forecast to climb into the lower 60s areawide this afternoon.
Upper level ridging is in place over the SW US and building east into the Central Rockies. Subsidence and a deep dry air mass within the eastern extend of this ridge extends across our CWA. A strong upper low is off the Pacific Northwest coast with diffluent flow between these upper level features over the Great Basin.
300 AM CST Mon Jan 23 2017 The main concern in the near term will be the potential for patchy fog again this morning, especially over part of the western CWA where skies are clearing and winds are diminishing with high pressure moving into the area. Upper level ridging will build into the region late in the day today in response to a upper level trough digging down the west coast. This upper level trough will move into the central Plains Tuesday forcing a associated cold front into the eastern Plains by Tuesday afternoon. Strong WAA will allow temperatures to warm into the low to mid 60s across the southern CWA while cloud cover across the northern CWA will keep highs in the upper 40s to near 50.
208 AM MST Mon Jan 23 2017 Update issued to adjust temps/cloud cover wording for the area based on movement of the high cloud shield coming off the Front Range. Upper level ridging is in place over the SW US and building east into the Central Rockies. Subsidence and a deep dry air mass within the eastern extend of this ridge extends across our CWA. A strong upper low is off the Pacific Northwest coast with diffluent flow between these upper level features over the Great Basin.
Rain chances will linger into the morning hours and possibly into the early afternoon but mainly be confined to the east as the upper low moves towards the coast. Rains are finally starting to rotate around the upper low situated to the southeast of Middle TN.
427 AM EST Mon Jan 23 2017 High pressure will remain north of the area today. Low pressure will intensify along the mid Atlantic coast tonight and move northeast toward the Gulf of Maine Tuesday.
Perhaps some thinning of the cloud layer in the afternoon as surface temperatures max out in the low to mid 40s, but at this point looks to remain cloudy. Breezy NW winds 10-20 mph will continue much of the day today due to the influence of the deep low pressure system over the southeast. Winds to lighten overnight tonight as the low continues northeastward and pressure gradients weaken over central IL. 00Z forecast models continue to build an upper level ridge into IL by sunrise Tue and shifting east into the Ohio river valley by Tue afternoon. Low pressure to track into central IA by midnight Tue night, into south central WI by sunrise Wed and then toward northern lower MI and Lake Huron by sunset Wed. Upper level trof digs into central IL Wed afternoon and Wed night bringing in cooler air.
The increasing southwest momentum will translate to the boundary layer on the High Plains of southeastern Colorado, northeastern New Mexico and much of the Texas Panhandle. The increased MSLP gradient with the deepening lee trough will result in stronger south winds, particularly east of U83 -- where 20 to 25 mph winds will be likely from late morning through late afternoon. Winds should be quite brisk when the cold front pushes through, with winds likely in the 25 to 30 mph range by the mid to late afternoon hours. Quiet weather is forecast the remainder of the week with Pacific high pressure in control.
1045 PM CST Sun Jan 22 2017 Quite the uneventful next 24 hours over this region as there's deep upper level troughs over each CONUS coast with weak ridging over the central states along with weak high pressure moving in from the west. After daybreak Monday, the rate of clearing will improve as drier air will be advected in from the west, aiding in visibility first then scouring out the low clouds. With some clearing and drier air in western MN, lows will be a bit cooler, dropping to the mid 20s to lower 30s.
149 AM EST Mon Jan 23 2017 A strong low pressure center in the western Carolinas this morning will move into eastern North Carolina this afternoon and be off the Mid-Atlantic Coast tonight. There will be considerable warp-around moisture today supporting a chance of showers but drying will occur tonight as the low moves farther away. Breezy conditions will be associated with the low today and tonight. There will be less wind as a dry pressure ridge moves into the area Tuesday.
306 AM CST Mon Jan 23 2017 Will be under a ridge aloft as the next upper trough moves over CA.
/issued 246 PM CST Sun Jan 22 2017/ Current sfc observations show winds continuing to decrease across West Texas and Southeast New Mexico, w/strongest activity over the Big Bend/lwr Trans Pecos as the tail-end of strong winds rounding the base of the upper trough leaves the region. WV imagery shows the upper trough now over the Arklamiss, and subsidence on the backside of this feature has resulted in CAVU conditions across the region under NW flow aloft. To the west, an upper ridge will briefly build into the area Monday, w/thicknesses increasing and downslope warming pumping temps into the 70s most locations. Unfortunately, an upper trough will move out of the PacNW and into the upper Midwest by Tuesday afternoon, shunting the ridge to the east and pushing a cold front into the region under SW flow aloft.
109 AM EST Mon Jan 23 2017 Low pressure tracking east through the southern U.
117 AM EST Mon Jan 23 2017 A strong area of low pressure will remain near the southern Appalachians overnight. This allows for a strong cold front to push through the area tonight. Weakening low pressure will pass by to the north on Monday, before high pressure returns through mid week. Another cold front will cross the area late in the week. Stacked low pressure is spiraling in NW GA and wrap-around moisture will advance back toward the area closer to daybreak. The general trend through the first half of next work week will be improving conditions as ridging gradually builds in aloft.
Strong mid/upper level trof axis to cross the region on the south side of strong low pressure system over the SE U. Another round of showers is expected to rotate around the south side of the low and push through SE GA today with scattered showers at times.
321 AM EST Mon Jan 23 2017 Upper air analysis reveals powerful upper level low (ULL) over the Southeastern U. By Tuesday, broad ridging will be in place across the Ohio Valley region. Many areas will see mostly sunny skies and highs in the lower 50s.
Much drier air has developed across our forecast area in the wake of a deep-layer cold front. Sfc and upper low will become vertically stacked on Monday with deep northwesterly flow across the area.
This upper low is expected to pass well to the north of OK, but strong mid-level winds may cause sufficient mixing for wind advisory criteria Tuesday afternoon. Models indicate minimum relative humidities in the lower and middle 30 percent range; however, this patterns almost always result in warmer and drier than model forecasts.
Core of the cold air is just offshore with the upper trof axis and is forecast to move inland Mon. Surface gradients will be light on Mon, so the low level convergence will be weak and believe the storms on Mon will be pulse-type with small hail, C-G as main threats. At the higher mountain elevations in the Sierra Nevada, an additional 1 to 3 feet is possible overnight into Monday. Drier northerly flow sets up on Tuesday as upper ridging approaches the West Coast and subsidence increases over Interior NorCal.
1024 PM MST Sun Jan 22 2017 Deep upper low will fracture and eject toward the region in the period, supporting cyclogenesis over the central plains and increasing chances for accumulating snow across the region. Forecast models continue to struggle with the details of this system given a fracturing wave and tendencies to close an upper low over the northern plains, not to mention the track of this potential closing upper low. There are a few model members indicating the potential for some light freezing drizzle there, late tonight into the Monday morning.
Skies should then clear during the day on Monday, as upper level ridging builds into the area. Temperatures will remain on the cooler side, though still above average for the time of year. With upper level ridging solidly overhead on Tuesday and southerly flow developing at the surface, temperatures will warm nicely into the 60s in most areas.
1224 AM EST Mon Jan 23 2017 Numerous showers are expected overnight associated with strong area of low pressure. The low will begin to lift north of the region Monday. Dry ridging will move into the area Tuesday. The occluded front will shift north of the forecast area overnight Wrap-around moisture and cold air aloft associated with the upper low supports a continued chance of showers. The models were not consistent with the wind speed forecast Monday into Monday night with the NAM MOS showing the higher values. It should be dry with less wind Tuesday as ridging moves into the area. The temperature guidance is likely too high Monday because of the cold upper low close to the area/considerable cloudiness.
Progressive upper ridging the first half of today will quickly yield to increasing southwesterly flow this afternoon and tonight in advance of our next wind maker tomorrow. Fortunately, it appears that we will avoid the threat of a high wind event as the lower- tropospheric speed max shifts east of the area by late morning, before mixing will be able to tap into the strongest winds.
1227 AM EST Mon Jan 23 2017 High pressure will build north of the area tonight. Low pressure will intensify along the mid Atlantic coast on Monday and move north toward the region late Monday night into Tuesday. High pressure building across Quebec will continue to push some cooler and drier air south across the area tonight. Monday will then turn out mostly sunny over central and northern areas and partly sunny Downeast as the high pushes into eastern Quebec. The day will be just a bit cooler and drier than recent days with highs from the mid 20s north to the mid 30s along the coast. Thinking is that sleet looks to be the dominant ptype with mix of snow/freezing rain and rain along the immediate coast by late mrng Tue.
Water vapor imagery shows the deep upper level low moving across east central MS and into western AL early this evening, with radar also showing associated scattered rain showers developing across interior southeast MS and southwest AL.
1223 AM EST Mon Jan 23 2017 Very gusty winds are possible at each terminal overnight (particularly KCHA and KTYS) as the center of a deep low pressure system produces 20-30 kt wind gusts at times through the morning hours.
313 AM CST Mon Jan 23 2017 An upper ridge over the Panhandles early will gradually push east by late today as a closed upper low tracks east out of the western states and Great Basin region today. The closed upper low will continue moving east across the central Plains states by late Tuesday and the Midwest Tuesday night.
302 AM EST Mon Jan 23 2017 The general model consensus is calling for an unusually deep area of low pressure to continue moving eastward across the Tennessee valley tonight, and eventually across the Carolinas and then offshore Monday night into early Tuesday morning. As the low rotates across the TN valley tonight and during the day Monday, we can expect to see numerous light to moderate rain showers moving across the area. Temperatures will be significantly cooler than what we saw over the weekend, but will still be above normal for the time of year today and tomorrow. Highs today and Tuesday are expected to max out in the lower 50s both days. Ridging at all levels will pass over Tuesday night, with warm air advection beginning before dawn. This will likely lead to ridge/valley differences for lows.
An unseasonably warm afternoon is on tap for today as temperatures rise into the low and mid 70s under mostly sunny skies. Normal lows for this date are in the lower 30s.
1148 PM CST Sun Jan 22 2017 A low pressure system, centered over eastern TN and northern GA, continues to track east this evening. Upper low continues to track east-southeast and had entered west central Mississippi this afternoon, with the fringes of the associated precipitation echoes down near the Ohio River. Not really looking for much with this feature, except to linger the clouds a bit longer, until a narrow high pressure ridge builds east into the Mississippi Valley and breaks the clouds up a bit in the afternoon. While temperatures on Monday will still reach the mid 40s, northwest winds of 10-20 mph will make it feel cooler. An upper trough will track across the Great Basin, resulting in surface cyclogenesis in the lee of the Rockies over eastern Colorado Tuesday morning.
342 AM EST Mon Jan 23 2017 The general model consensus is calling for an unusually deep area of low pressure to continue moving eastward across the Tennessee valley tonight, and eventually across the Carolinas and then offshore Monday night into early Tuesday morning. As the low rotates across the TN valley tonight and during the day Monday, we can expect to see numerous light to moderate rain showers moving across the area. Temperatures will be significantly cooler than what we saw over the weekend, but will still be above normal for the time of year today and tomorrow. Highs today and Tuesday are expected to max out in the lower 50s both days. Ridging at all levels will pass over Tuesday night, with warm air advection beginning before dawn. This will likely lead to ridge/valley differences for lows.
306 AM EST Mon Jan 23 2017 Low pressure aloft over the n GA area is forecast to exit the area to the ENE this morning.
An upper trough riding a 160kt jet continues to cross the West Coast states this evening. Ahead of this trough, a moist airmass in a strong southwesterly flow aloft remains in place over Utah. Winds have been gusty through much of the day and this should continue through the night and even into tomorrow across southern Utah given south/southeasterly pressure gradient and continued pressure falls ahead of the trough. The cold front will cross the area during the daytime hours tomorrow bringing northwesterly flow and lowering of snow levels. A cold front will cross the area arriving between 15-17z Mon with IFR in snow developing behind the front.
421 AM EST Mon Jan 23 2017 A low pressure area will develop along the mid Atlantic coast today and will move slowly northeast and be just south of Cape Cod by early Tuesday night. This low pressure area will bring snow and sleet and some freezing rain to the north country late tonight and Tuesday.
1055 PM MST Sun Jan 22 2017 Update issued to adjust temps/cloud cover wording for the area based on movement of the high cloud shield coming off the Front Range. Upper level ridging is in place over the SW US and building east into the Central Rockies. Subsidence and a deep dry air mass within the eastern extend of this ridge extends across our CWA. A strong upper low is off the Pacific Northwest coast with diffluent flow between these upper level features over the Great Basin.
335 AM CST Mon Jan 23 2017 The upper-level cyclone responsible for the latest round of inclement weather is moving rapidly east into the Carolinas early this morning. This will keep temperatures in the low/mid 50s in most areas this afternoon. Temperatures are forecast to drop into the mid 30s, with a few areas possibly falling below freezing around sunrise. Strong southwesterly flow aloft will develop on Tuesday as the ridge axis shifts east. Expect highs on Tuesday in the low/mid 60s.
407 AM EST Mon Jan 23 2017 Low pressure will spread rain over most areas, with some snow as well in some locations this afternoon into Tuesday.
Models are in much better agreement with the position and movement of the low pressure system with only some slightly differences in timing and how far south the low develops. the cold front will provide enough llvl lift for snow shower activity on Monday and Monday evening. expect winds off the pine ridge to provide enough downslope to limit steady snowfall.
It will be cooler today with highs in the lower to middle 40s.
High pressure is expected across the area for most of the rest of the week. Will have to keep an eye on this as the low level flow is favorable for this to advect into the northeast zones prior to sunrise.
CAA expected across the state tonight with an area of high pressure moving eastward across the northern plains and nosing into Iowa tonight. Low level winds also coming off the large area of high pressure/dry air and could prevent some of the precip from even reaching the ground.
Local area will remain under the influence of high pressure which will keep rain chances near zero next couple days.
200 PM PDT Tue Mar 21 2017 Low pressure will move through the region through Wednesday night and bring precipitation at times.
/ISSUED 1006 AM CDT Tue Mar 21 2017/ With high pressure in the central Gulf, onshore flow will continue this afternoon.
The southern end of this activity will weaken as it approaches the Altamaha River basin and encounters stronger ridging and drier air early this evening. A cold front will push into southeast Georgia Wednesday afternoon with a chance for showers and storms across portions of southeast Georgia by mid to late afternoon where enough diurnal heating is expected to push temps into the low to mid 80s.
Chamber of Commerce weather will continue through Wednesday afternoon due to an area of high pressure sagging southward over South Florida. A short wave trough will dive eastward across New England Tuesday night, with a robust area of high pressure moving out of Canada on it heels Wednesday.
Pressure gradient on the south side of this high will remain somewhat tight overnight, so increased winds should prevent much of a freeze threat except for perhaps a light freeze over far northern Missouri. Subfreezing temperatures shouldn't last too long over these areas, so not expecting any kind of deep freeze that would warrant freeze headlines for these areas. Cooler temperatures will continue into Wednesday with highs about 5 to 9 degrees below average.
333 PM CDT Tue Mar 21 2017 An H300 ridge axis will currently over the eastern Rockies will amply and shift into the Central Plains by Wednesday afternoon.
Mid to upper level ridging sharpens over the Central Texas tonight with the ridge axis shifted east into East TX by Wednesday morning.
A tight pressure gradient across the Southern Plains will begin to relax this evening as a weak cold front currently across Northern Ms, Northern Ar and Eastern Ok will begin backdooring itself into our terminal airspace overnight. Ahead of the backdoor cold front, should see MVFR/IFR ceilings come north from SE TX overnight, encompassing the TYR/GGG and LFK terminals with the possibility of LIFR ceilings and VSBYS at the LFK terminal towards daybreak. Low clouds should filter in the region in the wake of the backdooring cold front as well with IFR/MVFR ceilings possible. /issued 310 PM CDT Tue Mar 21 2017/ Another warm day with aftn highs reaching the lower to mid 80s, and a few upper 80s possible. Introducing isold pops mainly north of I-30 with boundary from late tonight thru Wed aftn before expanding ridge completely dissipates boundary.