Aikyam-Lab/Synoptic-Bench huggingface dataset:
A DEEP UPPER LEVEL TROUGH WILL BE PRESENT OVER THE ROCKY MOUNTAINS ON SATURDAY NIGHT AND SUNDAY. UPPER DYNAMICS WILL BE WEAKENING WITH THE AFOREMENTIONED TROUGH BECOMING A CUTOFF LOW OVER THE CENTRAL PLAINS. AND A BROAD UPPER RIDGE BUILDING OVER THE NORTHERN PLAINS AND UPPER MIDWEST.
CENTER OF UPPER LOW NOW OVER ERN TN. WITH LOW LEVEL SE FLOW AND THE UPPER LOW ACROSS THE AREA. WEAK UPPER LOW CONTINUES TO DRIFT EWD INTO THE MID TN VALLEY. VFR CONDS SHOULD PREVAIL AS THE UPPER LOW CONTINUES TO MOVE EWD AND WEAKEN.
HIGH PRESSURE WILL LEAD TO DRY WEATHER FOR MOST OF SATURDAY AND SUNDAY ALONG WITH LIGHT WINDS AND GRADUALLY WARMING TEMPERATURES. MODELS HAVE SHIFTED NORTH WITH THE CLOSED LOW OVER THE WESTERN CONUS AND A NEW PUSH OF MOISTURE MAY REACH OUR SOUTHERN ZONES AS EARLY AS SUNDAY AFTERNOON.
1153 PM EDT FRI APR 15 2016 AVIATION HIGH PRESSURE WILL BRING WARM AND DRY CONDITIONS OVER THE WEEKEND WITH LIGHT WINDS.
In the wake of a cold front, northerly winds will become northwesterly this afternoon, increasing and becoming gusty. Aloft - A ridge over the southern high plains reached north to the Canadian prairies while a long wave trough stretched across the eastern states. from the lower Great Lakes to the Bahamas. Surface - High pressure extended from the southern plains to the upper Great Lakes and continued to northern Quebec. A cold front across central FL arced across Atlantic waters to low pressure in southern New England waters. The center of the upper ridge slides out over the central Gulf while the eastern trough rotates across the Atlantic. The high pressure in the southern plains moves east. The cold front will exit south FL this morning.
Upper level trough moving across Northern Oregon this morning is producing scattered showers and isolated thunderstorms across Baker (Oregon), Adams, Washington (Idaho) and Valley counties. Upper level ridge will reestablish itself over the region this afternoon for southwesterly winds aloft. Sunday's temperatures are expected to reach the low 70s in the valley which is about 10 degrees above normal. Southwest Idaho and southeast Oregon will stay under southwest flow aloft on the western flank of an upper-level ridge.
357 AM MDT Sat Oct 22 2016 The large upper level ridge centered to our south will keep very dry and warm conditions in place. Temperatures will be about 3-4 degrees warmer than yesterday as we see a bit more warm advection and stronger downslope component. Most of the forecast period will be dry and unseasonably warm as upper ridging dominates the weather pattern across the western half of the United States.
122 AM EDT Sat Oct 22 2016 A ridge of high pressure currently over the western CWA will continue to diminish lake effect rain and snow showers that are mainly over central Upper MI. The upper trough over the Great Lakes right now will shift east while an upper ridge moving in behind it. Since cloud cover will move in from the west, the coldest area will be interior central Upper MI in the low 20s. Saturday night: A weak ridge will be in place Saturday evening before slowly sliding off to the east of the area late Saturday night.
Aloft - A ridge over the southern high plains reached north to the Canadian prairies while a long wave trough stretched across the eastern states. from the lower Great Lakes to the Bahamas. Surface - High pressure extended from the southern plains to the upper Great Lakes and continued to northern Quebec. A cold front across central FL arced across Atlantic waters to low pressure in southern New England waters. The center of the upper ridge slides out over the central Gulf while the eastern trough rotates across the Atlantic. The high pressure in the southern plains moves east. The cold front will exit south FL this morning.
130 AM EDT SAT OCT 22 2016 High pressure will bring much cooler and drier air to the region through the weekend.
A lee trof is forecast to organize Sat PM with an attendant thermal ridge and thus more a definitive warm up for Sat. Said mid level ridge will move east Sunday and a minor shrtwv trof will track across the area in the developing sw flow aloft.
and Sunday Warm advection mid clouds should clear from west to east this afternoon as weak upper ridge moves in from the west. Skies should start out clear this evening with increasing mid and high clouds late tonight as an upper trough approaches from the northwest. As the low moves by winds will shift to the north with temperatures falling during the late afternoon.
A cold front will push south down the east slopes of the Continental Divide Saturday afternoon and evening. Ahead of the cold front, strengthening ridge top winds will result in some LLWS vicinity KJAC, and along the east slopes of the divide Saturday morning. Some lower MVFR clouds may form behind the cold front along the east slopes of the Bighorn Range Saturday night, but are not expected to develop much further south of the southern tip of the Bighorn Range. Tonight Through Saturday Dry high pressure with west flow aloft will be over the area tonight and Saturday.
Deformation zone from low pressure moving into the NE states has finally shifted well east of the area. Highs will be on the cooler side with temperatures ranging from the lower 50s NE near the core of the coldest air to the upper 50s in the SW. Otherwise, main system will be mid to lake week as trough rapidly develops across the western Great Lakes and deepens with shower (thunderstorm?) chances increasing Weds afternoon into Weds night.
1140 PM MDT Fri Oct 21 2016 An upper level ridge will be over the area tonight and Saturday, keeping the weather dry and warm. High temps on Sat are expected to be 15 degrees or more above average across the southeast plains, and around 10 degrees above average in the high valleys.
159 AM EDT Sat Oct 22 2016 Low pressure along the mid-Atlantic will merge with another low tracking up the east coast and continue north to New England on Saturday. The low drift into Quebec on Sunday with a ridge building into the Ohio Valley. A clipper system will slide through the Eastern Great Lakes on Sunday night, pulling another cold front south behind it. Temperatures will be cool with highs ranging from the lower 50s in the west to upper 40s in the east. High pressure will build over the Ohio Valley on Saturday night. Low level warm advection ramps up on the north side of the high as the flow backs and expect to see some isentropic ascent clouds develop.
Dry weather should return Sunday under high pressure. Precipitation chances will return across the Pittsburgh metro and downwind into the Ridges through midday. As temperatures continue to dip, some of the lingering showers reaching the high terrain will change to snow showers. An tightening pressure gradient and mixing in cold advection should also result in gusty winds especially in the higher terrain, where gusts around 40 mph are expected. Sunday will begin dry as high pressure tracks well to our south. The best chance for showers late Sunday and Sunday night will lie north of Pittsburgh where the best low-level convergence will be seen, with some isolated activity possible along the ridges. The low will drag a front across Sunday night, which will bring temperatures back to below normal.
As the cold front continues to pull away from the area. though the low to mid level cloud cover will remain over the area.
322 AM EDT Sat Oct 22 2016 High pressure will control our weather through the weekend.
147 AM EDT Sat Oct 22 2016 Cold front has moved offshore with cooler and substantially drier overtaking the area. An upper level trough axis will cross the region this afternoon allowing reinforcing cold air into the area. The cooler air will reside over the region through the weekend with mostly clear skies. Cold advection pattern will prevail through the day as colder and drier air pushes into the region with high pressure. Southwest winds/weak warm advection Sunday as trough develops in the mountains and ridge along the coast. Maximum temperatures should warm to near normal values in the low 70s.
225 AM EDT SAT OCT 22 2016 High pressure will bring much cooler and drier air to the region through the weekend.
631 AM EDT Sat Oct 22 2016 Upper level trough keeps clouds showers and clouds through this morning. High pressure late today into Sunday. Re- enforcing moisture-starved cold front Sunday night. The upper low pressure system exit to our northeast today. A high pressure system builds from the Gulf states, northeast into the OH Valley and WV.
244 AM CDT Sat Oct 22 2016 Upper ridging aloft and southerly low level flow at the surface will support a sunny and warmer day across central and southeast Kansas.
High Pressure Builds in from the NW with cool NW flow across the region under sunny skies and expect Max Temps only reaching the lower 70s. This will support widespread lows in the lower/middle 40s inland and 50 near the coast. The cooler side of guidance was favored for nighttime temps given the favorable setup for strong radiational cooling conditions. Winds will become more light and variable on Sunday as ridging begins to work back in from the west and max temps on Sunday will trend more towards normal levels as temps moderate a good 5 degrees.
This morning has been some of the coolest temperatures that we have seen this season and expect another cool night tonight as high pressure continues to build in.
Isolated to scattered showers continue this evening across the higher terrain of far eastern Kentucky. Trough axis shifting east into the Appalachians will allow for this activity to continue a weakening trend, although a decent pressure gradient will allow for enough of a low level upslope component to keep mention in the forecast through around midnight. Temperatures will rebound towards 70 degrees in the afternoon as high pressure skirts by.
VFR conditions through the period as high pressure builds over the region.
304 AM CDT Sat Oct 22 2016 Today and Tonight, An upper level ridge across the southern high plains will move east across the southern plains. An upper level trough will ride around the upper ridge axis across the northern plains. Highs Today will warm into the lower to mid 70s across northeast and east central KS with mid to upper 70s across north central and central KS.
400 AM EDT Sat Oct 22 2016 AN upper trough will cross the region this morning.
349 AM CDT Sat Oct 22 2016 High pressure remains in control over the Midwest. Temps are several degrees warmer than last night for most areas across E Iowa/NW Illinois from effects of light southerly winds and scattered mid-level clouds.
247 AM CDT Sat Oct 22 2016 Will start this morning with a weak cold front set up near the ND/SD border, but little in the way of impacts in expected from this boundary. Another day in the 60s can be expected on southeasterly winds, with a few readings in the low to mid 70s far southwest. Low pressure across MT this morning will shift across Lyman County by 00Z, before exiting to west central MN by 06Z Sunday. This will help limit the high grassland fire danger index values, although RH values will still fall to 20-30 percent southwest of Pierre. Northwesterly winds and cooler air will return for Sunday as high pressure slides overhead.
334 AM EDT Sat Oct 22 2016 Upper level trough keeps clouds showers and clouds around into Saturday. High pressure late Saturday into Sunday. Re-enforcing moisture-starved cold front Sunday night. The upper low pressure system exit to our northeast today. A high pressure system builds from the Gulf states, northeast into the OH Valley and WV.
321 AM EDT Sat Oct 22 2016 Upper level trough keeps clouds showers and clouds around into Saturday. High pressure late Saturday into Sunday. Re-enforcing moisture-starved cold front Sunday night. Forecast on track with moist, chilly air in place on back side of exiting low pressure system. Upper level trough centered right over CWA early this afternoon, with showers across the east drifting north, and rain across west drifting southeast. This trough is starting to become more negatively tilted, and we are seeing some development of the rain across SE Ohio due to this. Moisture is becoming pretty limited by this time, but think the highest ridges could get a dusting of snow accumulation. The 850mb temperature trough maxes out from 12Z-15Z, after which any lingering precipitation in the mountains should end with just an isolated shower possible Saturday.
325 AM EDT SAT OCT 22 2016 Slow release of the existing mid level cyclonic flow within the trailing section of the departing mean trough periphery will leave SE Michigan under generally benign northwest flow today. Pattern of weak low level warm air advection develops on Sunday, existing low level southwest flow increasing immediately downstream of an inbound cold front. Mixing potential perhaps compromised some as mid level warm air advection remains stronger, but the noted warming across the lowest levels should still support readings into the 60 to 65 degree range. Best response locally tied to the attendant cold frontal boundary, with frontal convergence increasing with time as trailing stronger height falls eventually catch the boundary.
Cold front currently across Tampa Bay will exit all terminals before daybreak. /issued 741 PM EDT Fri Oct 21 2016/ The advertised cold front is making steady progress southward through the northern Florida peninsula this mid-evening.
The warming trend will continue tomorrow as the upper ridge moves eastward and a lee trough develops. Expect high temps to be around 10 degrees warmer, on average. At least low rain chances will finally return initially across extreme NW OK Tue aft/eve along a prefrontal trough, and then move into northern, central, and SE OK overnight Tue into Wed as the next could front does the same. For now, will keep low Chc PoPs mainly along/east of I35 and north of I40 where additional mid to upper ascent and moisture will be present thanks to a passing trough axis.
200 AM CDT SAT OCT 22 2016 Dry air quite apparent on water vapor imagery this morning as high pressure aloft rotates over Texas.
Decided to go slightly cooler than the superblend in our typically cooler areas of Ord and Lexington, leaning more on MET/MAV guidance.
The first bout of lake effect and upslope rain and snow showers are possible over some of the higher ridge tops. KCCX picking up light returns over the West Central mountains and Laurel Highlands as cooler air continues to advect into the region. and we'll certainly be looking at a few wet snowflakes mixing in at times with some of the showers over the higher terrain of the northwest and northern mountains. Highs today will only range from the lower 40s northwest to the lower to middle 50s southeast. Mins tonight will range from the mid 30s northwest to the lower 40s southeast. while highs Sun range from the mid 50s north to the lower 60s southeast.
Some concern in those areas that are normal a bit colder than normal, that lows could dip to the lower to mid 30s. 50 inches, while dewpoint temperatures across AR in the lower to upper 40s. Overnight, this high pressure will promote ideal radiational cooling conditions.
High pressure ridging gets flattened somewhat today as an upper level disturbance moves across the northern half of the state. This will sweep a Pacific cold front across the area late this morning into early this afternoon. High pressure ridging will begin to build across the northern Rockies once again tonight and especially during the day Sunday. Afternoon temperatures today will be in the lower to middle 60s. Although heights will be rising Sunday, 850mb temperatures behind today's front will be slightly cooler resulting in highs in the upper 50s to lower 60s for most areas across the lower elevations on Sunday.
529 AM EDT Sat Oct 22 2016 Cold front has moved offshore with cooler and substantially drier air overtaking the area. An upper level trough axis will cross the region this afternoon allowing reinforcing cold air into the area. The cooler air will reside over the region through the weekend with mostly clear skies. Cold advection pattern will prevail through the day as colder and drier air pushes into the region with high pressure. A broad upper ridge will build over the center of the country with northwesterly flow aloft over the forecast area. At the surface, high pressure will be centered over the deep south. Full insolation and weak warm air advection will result in near normal high temperatures in the lower 70s.
Upper air pattern features a ridge setting up over the high plains with trof digging along the west coast for the short term. This wave also pushing a cold front through eastern Montana with a some light rain occuring over the hiline. Remainder of the period will see the upper ridge building north with high pressure drifting across the northern plains.
The boundary may kick off a few showers over the warmer waters, but expect a dry forecast for land with only a few clouds accompanying the front. High pressure builds in across the Deep South behind the front with northwest winds ushering in a dry and cooler air mass across the region for the weekend. Main story will be the will be the cooler temperatures, with highs in the low 80s, or around 5 degrees below normal for this time of year.
Enough surface moisture advection ahead of Plains cyclogenesis as ridge shifts to the eastern Great lakes will help hold low temperatures close to the upper 30 to low 40 dew points.
234 AM CDT Sat Oct 22 2016 An upper level ridge of high pressure centered over west Texas will move east across Texas to the Gulf Coast by Sunday. Behind this ridge a weak upper level disturbance will approach the Davis Mountains and Big Bend from Mexico on Sunday during peak heating and could spark isolated late afternoon and early evening thunderstorms.
Otherwise, expect dry conditions as area of warm advection mid-level clouds spreads east across the forecast area this morning into early afternoon and then dissipates later in the afternoon as ridging and associated subsidence provides clearing skies from the west. Tonight, Weak ridging in place over the area through much of the night will ensure mainly dry conditions.
There is an upper level ridge to the west of the forecast area this afternoon and this will linger through Saturday as it becomes more broad across the CONUS. Some areas will be a little warmer than last night, but some will have similar temperatures. Skies will be sunny and with the warm advection, south winds and the upper ridge a little further to the east, the temperatures will be warmer than today. Even through the cold front moves through, temperatures will be warmer as the winds turn to the west. By Sunday, the winds turn to the north and a little cooler air moves into the area.
1211 AM CDT Sat Oct 22 2016 A warm front/trough will move across the forecast area tonight. Saturday to remain dry with the warm wedge still over our area and the sunshine we should get should also boost highs into the 50s most locations, a welcome change for outdoor activities after our week of cooler values. A low will cut across the Dakotas Saturday night and move through southern Minnesota and Wisconsin Sunday, drawing down a weak a cold front from the north. Breezy and cool northwest flow will develop Sunday in the low's wake, with highs ranging from the middle 40s near Canada to the middle 50s south of Highway 2.
1144 PM MDT FRI OCT 21 2016 06Z TAF CYCLE A strong ridge of high pressure will cause VFR conditions to persist area-wide for the remainder of tonight and Saturday. The ridge axis will begin to shift east of New Mexico Saturday, allowing some mid and high level clouds over west and especially southwest parts of the forecast area. A warming trend will continue into the weekend with plenty of sunshine as high pressure dominates.
As a cold front pulls away from the area. This will allow for clearing skies with cooler air continuing to filter in. the cooler air continues to move in and lows will fall into the mid 30s to mid 40s.
Dry weather should return Sunday under high pressure. After a break in precipitation early this morning, chances will return across the Pittsburgh metro and downwind into the Ridges through at least midday. As temperatures continue to dip, it's reasonable to expect some snow showers in the high terrain of WV and MD. An tightening pressure gradient and mixing in cold advection should also result in gusty winds especially in the higher terrain, where gusts around 40 mph are expected. Sunday will begin dry as high pressure tracks well to our south. The best chance for showers late Sunday and Sunday night will lie north of Pittsburgh where the best low-level convergence will be seen, with some isolated activity possible along the ridges. The low will drag a front across Sunday night, which will bring temperatures back to below normal.
211 AM EDT Sat Oct 22 2016 Tight pressure gradient situated between low pressure just southeast of Long Island, and high pressure over the midwest will keep gusty winds around through Saturday. This high will move southeast Saturday and Sunday.
213 AM EDT Sat Oct 22 2016 Tight pressure gradient situated between low pressure just southeast of Long Island, and high pressure over the midwest will keep gusty winds around through Saturday. This high will move southeast Saturday and Sunday.
329 AM CDT Sat Oct 22 2016 Got a little warmer yesterday than what I was thinking and so with that in mind, I bumped up highs today a little bit. Models continue to show a weak trof/front to pass through the area overnight tonight but not expecting anything with the passage other than a little cooler air for Sunday.
Slow release of the existing mid level cyclonic flow within the trailing section of the departing mean trough periphery will leave SE Michigan under generally benign northwest flow today. Pattern of weak low level warm air advection develops on Sunday, existing low level southwest flow increasing immediately downstream of an inbound cold front. Mixing potential perhaps compromised some as mid level warm air advection remains stronger, but the noted warming across the lowest levels should still support readings into the 60 to 65 degree range. Best response locally tied to the attendant cold frontal boundary, with frontal convergence increasing with time as trailing stronger height falls eventually catch the boundary.
Relatively uneventful short term period in store as cold front leaves dry and breezy conditions in it's wake. As the high pressure ridge builds over the region, the chilly continental air mass will settle over the area, with markedly cooler low temperatures through Sunday morning.
With ridging continuing to build in from the west, temps will continue climbing Saturday.
344 AM CDT Sat Oct 22 2016 Massive subsidence over the central conus under upper ridge with very dry air as seen in IR imagery. Highs in the low 70s yesterday will give way to mid to upper 70s to around 80 today with clear skies. Upper level ridging will dominate the synoptic pattern the next several days across the central portions of the United States.
225 AM MDT Sat Oct 22 2016 Early morning WV imagery and RAP upper level analysis showing broad ridging across the souther plains and zonal flow across the northern plains along the northern apex of the ridge. At the surface lee trough is in place near the front range with southerly gradient in place over our CWA.
922 AM EDT FRI APR 29 2016 HIGH PRESSURE SURFACE AND ALOFT PERSISTS ACROSS WEST CENTRAL AND SOUTHWEST FLORIDA.
A LOW PRESSURE SYSTEM WILL CONTINUE TO EXIT THE AREA TODAY.
UPPER RIDGING WILL BUILD OVER THE REGION TODAY. THE DRIER AIR COMBINED WITH THE UPPER RIDGE SHOULD KEEP AREAS NORTH OF I-10 DRY.
AS WEAK LOW PRESSURE BRUSHES THE AREA. BRINGING COOLER TEMPERATURES AND PRECIPITATION CHANCES ACROSS MUCH OF CENTRAL CALIFORNIA. THERE ARE SOME LINGERING UPSLOPE CLOUDS ALONG THE SOUTH END IN NORTHERLY FLOW ON THE BACKSIDE OF THE LOW PRESSURE SYSTEM. MEANWHILE SOME HIGHER LEVEL CLOUDS DROPPING OVER A PACIFIC RIDGE ARE MOVING IN FROM THE NORTH.