Aikyam-Lab/Synoptic-Bench huggingface dataset:
AS HIGH PRESSURE REMAINS ANCHORED OVER THE DESERT SOUTHWEST. A WEAK LOW PRESSURE SYSTEM MAY BRING SOME CLOUDS AND SLIGHTLY COOLER TEMPERATURES BY MID WEEK. MODELS INDICATE ZONAL FLOW WILL DOMINATE THE REGION WITH SOME SLIGHT RIDGE BUILDING UNTIL A DEVELOPING TROUGH MOVES THROUGH AZ. THERE IS SOME MODEL DIVERGENCE WITH THIS TROUGH AS THE GFS AGGRESSIVELY CUTS OFF A LOW OFF THE SW CA COAST WHEREAS THE ECMWF ONLY SHOWS A PASSING TROUGH.
1225 PM CDT SUN MAR 22 2015 FOR 18Z TAFS /ISSUED 1110 AM CDT SUN MAR 22 2015/ RAIN IS FINALLY MAKING IT TO THE SURFACE WITHIN THE HUN CWA AFTER DRY AIR IN THE LOWER LEVELS HAVE KEPT MOST OBS DRY THROUGHOUT THE MORNING. THE UPPER LEVEL TROUGH OVER THE SOUTHERN PLAINS WILL PROVIDE MOISTURE AND CLOUD COVER INTO THE REGION AGAIN TODAY. RAIN CHANCES WILL INCREASE THROUGH TODAY AND INTO TONIGHT AS THE TROUGH MOVES ACROSS THE AREA.
AN UPPER LEVEL SHORT WAVE TROUGH OVER THE SRN PLAINS WITH A +PV ANOMALY WILL SLIDE EWARD ACROSS THE SRN STATES AND GRADUALLY WEAKEN THROUGH THE PERIOD. A COLD FRONT EXTENDS S-SWWARD FROM THIS LOW OUT ALONG THE TX COASTLINE AND A WARM FRONT EXTENDS EWARD FROM IT ACROSS N FL. A SECONDARY WARM FRONT LIES OUT OVER THE NRN GULF WATERS ABOUT 60 NM OFFSHORE. AS THIS LOW PRESSURE SYSTEM MOVES EWARD THROUGH TONIGHT, WE WILL SEE SHOWERS WITH ISOLATED THUNDERSTORMS CROSS THE AREA FROM WEST TO EAST.
HIGH PRESSURE IS MOVING ACROSS THE REGION WITH WARM CONDITIONS ACROSS THE REGION. TEMPERATURES ARE IN THE MID TO UPPER 70S OVER THE LOWER ELEVATIONS. A COLD FRONT IS FORECAST TO BACK WESTWARD ACROSS THE PLAINS TONIGHT.
PLEASANT WEATHER IS ANTICIPATED FOR THE REST OF TODAY WITH BREAKS IN THE CLOUD COVERAGE AND HIGHS IN THE LOWER TO MID 70S OVER MOST PLACES. A WEAKENING UPPER LEVEL TROUGH EXITS TO THE EAST OF TEXAS TODAY.
336 PM EDT SUN MAR 22 2015 HIGH PRESSURE IN CHARGE THROUGH MONDAY. LOW PRESSURE SYSTEM BRINGS UNSETTLED WEATHER MID-WEEK. HIGH PRESSURE IS SLOW TO TAKE CONTROL INTO THE WEEKEND IN A COLDER PATTERN. AS THE WARM FRONT DEVELOPS A BIT BETTER LATE MONDAY.
TEMPERATURES ARE STRUGGLING TO WARM IN THE LOW DECK WITH MAINLY 60S TO AROUND 70. WITH SIGNIFICANTLY WARMER MID 70S TO LOWER 80S WELL SOUTH OF THE BOUNDARY ACROSS NORTH-CENTRAL FL. LOW PRESSURE WILL MOVE EAST ALONG THE EASTERN GULF COAST THIS EVENING. WITH THE SYSTEMS COLD FRONT NEAR THE BIG BEND OF FLORIDA BY MONDAY MORNING. WITH ADDITIONAL ACTIVITY DEVELOPING ALONG THE COLD FRONT. UPPER SHORT WAVE TROUGH AXIS OVER THE AREA MONDAY EVENING WILL MOVE EAST INTO THE ATLANTIC MONDAY NIGHT.
403 PM EDT SUN MAR 22 2015 A LARGE AREA OF HIGH PRESSURE WILL BUILD SOUTHEAST ACROSS THE GREAT LAKES.
RAIN WILL MOVE EAST OF THE AREA LATE TONIGHT AS THE AREA OF LOW PRESSURE MOVES THROUGH. LOWS TONIGHT WILL FALL INTO THE LOW TO MID 50S INLAND TO LOW 60S ALONG THE COAST. LOW CLOUDS WILL LIKELY CONTINUE THROUGH MUCH OF THE DAY ON MONDAY AS THE UPPER TROUGH WILL BE SLOW TO PASS.
A DECENT COLD FRONT HAS PASSED THROUGH WESTERN AND NORTH CENTRAL NEBRASKA. AHEAD OF STRONG UPPER LEVEL LOW CURRENTLY LOCATED 800 MILES OR SO MILES WEST OF THE OREGON/WASHINGTON COASTLINE. A MID LEVEL WARM FRONT WILL DEVELOP LATE TONIGHT FROM THE PANHANDLE TO SOUTHWEST NEBRASKA. BUT HAVE ELIMINATED ANY PRECIP FROM THOSE CLOUDS IN THE FORECAST AS THE LOWER LEVELS REMAIN VERY DRY. THE MID LEVEL WARM FRONT AND WARM AIR ADVECTION SPREAD NORTHEAST ACROSS NEBRASKA MONDAY. AS MOISTURE LOOKS SOMEWHAT BETTER IN THE LOWER TO MID LEVELS.
352 PM EDT SUN MAR 22 2015 HIGH PRESSURE OVER THE CANADIAN PLAINS WILL MOVE SOUTHEAST TO THE EASTERN LAKES BY MONDAY NIGHT.
114 PM CDT SUN MAR 22 2015 -RA CONTINUES WITH UPPER TROUGH MOVES EAST. THEN THE NEXT SIGNIFICANT CHANCE OF RAIN WILL BE MID WEEK WITH A COLD FRONT. THEN GRADUALLY MOVING IT EAST AND THE UPPER LOW PRESSURE MOVES EAST.
622 AM EDT FRI MAR 13 2015 FRONT PUSHING NORTH AS A WARM FRONT TODAY AND TONIGHT. AND THEN BACK SOUTH AS COLD FRONT SATURDAY.
THERE WILL BE THE POTENTIAL FOR A WINTRY MIX OF FREEZING RAIN AND SLEET BRIEFLY AT THE ONSET BEFORE A CHANGE TO ALL RAIN OCCURS FOR SATURDAY.
TEMPERATURES SHOULD BE A BIT WARMER TODAY. TONIGHT-SAT: A BIT OF COOLER AIR WILL TRY TO MOVE IN FROM THE NE. NOT ENTIRELY CONVINCED ABOUT THE MUCH COOLER TEMPERATURES MODELS ARE ADVERTISING. 1000-850 MILLIBAR THICKNESSES PUSHED TEMPERATURES IN THE THE LOWER-MID 70S. -HOWERTON UPPER LOW AND TROUGH WILL MEANDER BACK INTO THE SOUTHERN PLAINS AND SPREAD LOW LEVEL MOISTURE BACK INTO KS MIDWEEK.
106 AM PDT FRI MAR 13 2015 HIGH PRESSURE OVERHEAD WILL PERSIST INTO THE WEEKEND WITH ABOVE AVERAGE TEMPERATURES THROUGH SATURDAY.
AN UPPER RIDGE WILL BUILD INTO THE REGION TODAY AND PROVIDE ABUNDANT SUNSHINE. LIGHTER WINDS AND LESS CLOUD COVER OVERNIGHT WILL PROVIDE A COOLER START THIS MORNING. EXPECTING A SLIGHTLY COOLER DAY TODAY DUE TO THIS ALONG WITH WEAK MIXING. THIS EVENT WILL QUICKLY DEVELOP A LEE TROUGH AND INCREASE WINDS OVER THE WESTERN VALLEYS. THIS WILL DRY OUT THE LOW LEVELS AND CAUSE DEWPOINTS TO FALL BACK INTO THE LOWER TO MID 20S. DEWPOINTS IN THE LOWER TO MID 20S WILL PRODUCE HUMIDITIES IN THE TEENS.
334 AM CDT FRI MAR 13 2015 MAIN CONCERNS TODAY WILL BE PATCHY EARLY MORNING FOG OVER THE EAST AND COLD FRONT MOVING INTO THE REGION ACROSS THE NORTHWEST DURING THE MORNING HOURS. A FEW SHOWERS ASSOCIATED WITH THE LOW OVER THE SOUTHERN PLAINS WILL MOVE TOWARD THE FAR SOUTHEAST THIS MORNING. AS THE COLD FRONT MOVES ACROSS THE REGION THIS AFTERNOON NW WINDS WILL INCREASE AND DEW POINTS WILL LOWER.
108 AM EDT FRI MAR 13 2015 CANADIAN HIGH PRESSURE WILL BUILD ACROSS THE REGION TONIGHT INTO FRIDAY.
FROM TONIGHT THROUGH THE WEEKEND A COOLING TREND WILL OCCUR AS THE UPPER RIDGE AXIS SHIFTS EASTWARD AND THE UPPER LEVEL PATTERN FLATTENS.
A surface cold front associated with this trough, along with enhanced frontogenetical forcing, will support chances of rain showers. The cold front could linger through much of Tuesday, so chances of rain showers will linger in our southeast in the afternoon. A quiet period though breezy and on the cooler side Tuesday night into Wednesday, then we see a bump in 925 temps as WAA regime takes hold Wednesday night.
121 AM EST Tue Nov 8 2016 A large area of high pressure will slowly recede off to the southeast overnight and Tuesday. A cold front will move through the region Tuesday night and early Wednesday followed by cooler temperatures for the second half of the week into the upcoming weekend. Clear and calm overnight in progress with high pressure overhead. Ensemble mean 925MB temps are supportive of max temps for election day in the low to mid 60s. Upper ridging over the Northeast at the start of the period will give way to a fast moving upper trof in this progressive upper pattern. The first system is forecast to come over the top of the ridge Tuesday night with a weak front and showers dropping southeast across PA overnight into Wednesday.
A warm front will clip the coast tonight. A trailing cold front will bring a little rain to most of the area Tuesday night and Wednesday morning.
Southerly winds will begin ushering in warmer air. Highs today will be a few degrees warmer than yesterday with an upper level ridge nosing in. The upper level ridge peaks over North Dakota Wednesday. This will bring slightly cooler temperatures in. At 11 pm CDT a region of high pressure extended across the central Dakotas.
Some of these may produce up to an inch of rainfall because of the slow eastward movement underneath the upper low. After the larger area of rain moves out of the fa this afternoon, the best chance for rain will be tonight as cold front moves across the area. Models show a closed low developing over southwest Texas the middle of this week from some energy from the upper trough that will continue to move across the region tonight and Tuesday. This upper low will meander around that area before eventually moving towards the forecast area and opening up into a trough.
Further west over central KS, some clearing late may allow temperatures to fall into the low 40s. MWM/KED Precip chances will diminish/end from northwest to southeast across the forecast area on Tuesday, with the remnant trof shearing east of the area as the main upper trof drops southeast across the Great Lakes. Cooler/drier high pressure will settle south across the area on Tuesday night. Ridging aloft and at the surface will prevail over the area into Wednesday with near seasonal temperatures.
Warm dry high pressure will continue across the eastern Great Basin through the rest of the week.
1210 AM EST Tue Nov 8 2016 High pressure will hold over the region through Tuesday. A cold front and upper level disturbance will approach from the northwest Tuesday night, and then sweep through the area on Wednesday.
301 AM CST Tue Nov 8 2016 A cold front will move southeast across our region this afternoon and evening, accompanied by scattered showers. Pops today will remain in the chance category, with the highest chances occurring along the front across southwest Indiana and southern Illinois late this afternoon. Cooler north winds will result in highs around 60 degrees. Forecast lows will be in the mid to upper 30s, however it is quite possible some outlying areas will dip below freezing.
101 AM EST Tue Nov 8 2016 High pressure lingers much of today. Cold front passes late tonight with showers lingering into Wednesday.
Cooler and drier air will push into the area tonight, with the northern plains high pressure settling south across the area. Expect the main ridge axis to be located right across Central KS by tonight, which will lead to good radiational cooling across most of Central Kansas where min temps will flirt with freezing. Expect widespread frost for areas along and north of a Hutchinson to Cottonwood Falls line as min temps fall into the lower 30s. Expect dry and more seasonal type temps for the middle of the week, as the high pressure area settles across the region. Not expecting any precip as this wave retrogrades as most of the low level moisture will remain cut off to the south of the area.
An impressive 588dm upper ridge slides into the forecast area Tuesday. The ridge gets flattened Wednesday and Wednesday night.
/Issued 310 PM CST Mon Nov 7 2016/ Reinforcing cold front will move into the Texas and Oklahoma Panhandles this evening and overnight, with increasing wind speeds.
Upper level trough will continue to be the primary weather influence and thus the lower clouds should prevail for much of the period with showers still possible throughout the day. Aloft a trough of low pressure across the Central and Southern Plains will provide weak impulses across the Four State Region and keep rain chances ongoing overnight and into tomorrow.
149 AM EST Tue Nov 8 2016 High pressure lingers much of today. Cold front passes late tonight with showers lingering into Wednesday.
Persistent and deepening 500 mb troughiness in the Lone Star State will allow numerous showers and thunderstorms today in Deep South Texas and the Rio Grande Valley. Given this chance of rainfall and expected significant cloudiness overhead, inherited high temperatures looked reasonable and were retained for this forecast cycle, especially since a weak cold front is also anticipated to approach and pass through. The scattered convection will persist on Wednesday as the mid-level trough morphs more into a closed 500 mb low that will slip southwest into northern Mexico. Wednesday's high temperatures will be slightly cooler than Tuesday's courtesy of northerly winds in the wake of the cold front.
302 AM EST Tue Nov 8 2016 Another mild day is in store ahead of an approaching cold front. The cold front will bring showers tonight into Wednesday morning and a return to seasonal temperatures. Showers will still be likely in the southeast ridges Wednesday morning as the cold front exits east. Showers will gradually diminish through the day, but colder low level northwest flow will keep a low chance for showers into early evening in the ridges. High pressure and anticyclonic flow will end showers quickly Wednesday evening, with gradual clearing.
The current situation shows a fairly classic long wave pattern with the trailing forcing and cold front aloft from the eastern Ontario short wave tied into the stronger forcing and deformation zone of another wave approaching from KS and NE. Temperatures will be somewhat cooler behind this system and frontal passage but still remain seasonal and just above normal in most locations.
An upper level ridge will persist over the western U. The axis of this ridge will run from Montana south-southwest through Nevada and southern California. A weak system within this flow has been moving into the top of the ridge this evening. Overnight cooling will allow for some fog development at the lowest elevations of the Columbia Basin late in the tonight period.
1140 PM CST Mon Nov 7 2016 Upper-level trough bringing rain today will be the only source of sensible weather through the next 7 days. Subjective 12Z upper-air analysis indicates 500mb trough axis through the heart of ND/SD/NE/KS and toward the OK-TX panhandles. Short-range models are persistent in dissipating shower activity as it moves into eastern NE this evening, with upper-level trough weakening and elongating and mid-level moisture veering southeastward. Cold front will bring a slight dip in low- to mid-level temperatures through Wednesday morning. With continued clear skies into Tuesday night/Wednesday morning, along with light winds and fairly long darkness, lows should drop near to below freezing in many locations (especially favored radiational cooling sites like the valleys), and have lowered temps below blends.
Models have been consistent and agree well with a strong upper level high pressure ridge building into the region through Wednesday. In fact, reanalysis data of the top four warmest events on November 9th were about 3 degrees celsius cooler at 85h than the latest model forecast shows. At the surface, high pressure out west will build slowly east and then south across the region through Wednesday.
1238 AM EST Tue Nov 8 2016 Dry high pressure will will persist over the area through Tuesday.
1236 AM EST Tue Nov 8 2016 High pressure will persist across the region into the middle of the week.
This ahead of a sharp trough across Oklahoma and Kansas. This trough will shift eastward into the area tonight and early Tuesday. Trough axis pushes east of the area Tuesday afternoon with diminishing rain chances. By Tuesday night, trough slips south of the area, while ridging begins to build in aloft. The pattern of the persistent ridge across the west/central US looks to hold with not one but two additional waves dropping across the Great Lakes Region/Eastern CONUS.
115 AM EST Tue Nov 8 2016 A cold front will approach the area from then northwest tonight resulting in increasing cloudiness. Dry conditions will return to the area late Tuesday night, with cooler, more seasonable temperatures into late week. Short term period highlighted by precip chances Tuesday as cold front pushes southeast through the region. Attendant surface trof/cold front will enter our northwest early Tuesday morning and exit the area early Tuesday evening. previous forecast, however kept POP's capped at 70%, with the highest POP's across the southeast during the afternoon hours, where forcing is slightly better. High pressure quickly builds into the area Tuesday night through Wednesday, providing dry conditions and more seasonable temperatures, with near climo highs in the low to mid 50s Wednesday.
1140 PM EST Mon Nov 7 2016 A ridge of high pressure at the surface and aloft will remain over the region through Tuesday. A cold front will move east from the Great lakes Tuesday night, and will bring rain showers to the north country late Tuesday night and Wednesday.
302 AM EST Tue Nov 8 2016 High pressure remains in control of the region today. A cold front will move through the area Wednesday.
High pressure will bring dry and very mild conditions through the weekend.
Latest sfc observations make it hard to pin down the exact location of the cold front, but north winds are slowly increasing as the pressure gradient tightens, and should continue to increase thru Tuesday afternoon. /issued 131 PM CST Mon Nov 7 2016/ The upper trough over the Central Plains this morning will split apart with some of the energy moving NE and some of it retrograding back to the SW. At the surface A weak frontal boundary moved into the area this morning but the cooler air is lagging it. A north wind will continue Tuesday and Wednesday and expect cooler low temperatures Tuesday night.
335 AM CST Tue Nov 8 2016 The upper level trough that has brought us widespread rains continues to move through the Southern Plains tonight as a front drops down into North Texas. We will maintain a troughing pattern aloft today as the base of the trough begins to detach and will eventually form a cut-off low to our west on Wednesday. Outside of rainy areas it will be cloudy, cool, and damp with high temperatures today ranging from the lower 60s in the west and northwest to near 70 degrees in the far southeast. Without drier air filtering in behind the front, ample moisture will remain in place for the next few days as the upper level low takes up residence over northern Mexico. Isolated showers will likely continue tonight and Wednesday as the cut-off low develops over West Texas.
1144 PM CST Mon Nov 7 2016 Positively tilted short wave digging southeast from the Midwest will approach the region with an associated cold front Tue/Tue night. A broad area of high pressure will build east into the Ohio Valley region for much of the rest of the short term, keeping all areas dry but cooler.
WV imagery indicates an upper level trough of low pressure extending southward across the Central Plains into the South Plains while upper level ridging continues to build across the Intermountain West.
Warm and dry conditions will continue through the week thanks to a large and persistent area of high pressure. Water vapor imagery showing the next round of high-amplitude ridging commencing in the eastern Pacific and adjacent western North America downstream of a deep trough with axis centered around 144W. This ridging will permit a night of excellent radiational cooling followed by a very warm Tuesday across the region. May see a more consistent northerly wind in the Lower Colorado River Valley tomorrow with occasional gusts 15-20 kts at KIFP.
Ahead of a trough approaching the Mississippi River Valley, a weak impulse is rotating northward through Mississippi. Closer to the surface, easterly flow has reinforced the low level dry air, as evident in the 00Z sounding with a 0. Do have a few locations in the east falling into the lower 40s, but expect mostly mid 40s to mid 50s. Cooler temperatures are expected as we progress through the latter half of the week along with the airmass becoming drier once again. Thin high-level clouds continue to move across Alabama this afternoon with more expansive cloud cover to our west in association with an upper trough. This can be attributed to lift remaining weak along the positively-tilted upper trough and very dry low-level easterly flow in advance of the front.
337 AM CST Tue Nov 8 2016 An upper level long wave trof was moving through the forecast area at 07Z/1AM. At the surface, a cold front was just exiting Price county. Some stratus was leaking over the Canadian border into the Arrowhead associated with the upper trof. Meanwhile, dry high pressure was building into the area from the west. Clearing skies were occurring thanks to the high. The upper trof moves east of northwest Wisconsin by afternoon. This leaves the region in a northwest flow with much cooler temps at 850mb, around 4C, through the day. Will see the clouds over the Arrowhead dissipate by afternoon with the departing trof. However, the drier air arriving from the high pressure may affect the overall cloud coverage. Max temps will be cooler today.
1256 AM EST Tue Nov 8 2016 Aviation The long stretch of nice weather will come to an end on Election Day as a cold front will bring rain. It will also be cooler with highs in the mid to upper 50s.
A weak back door cold front will drop into the eastern plains this evening with gusty north to northeast winds to follow. Otherwise, breezy gap winds will impact the middle rio grande valley overnight as the back door cold front squeezes through the gaps. Look for cooler temperatures tonight into Tuesday after passage of the front. A strong upper level ridge will build over the Great Basin Tuesday and Wednesday as temperatures remain near to slightly below seasonal norms. 32 North to northeast flow over the state will be dominate the rest of the day into Tuesday as an upper level ridge builds over the Great Basin. A weak back door cold front will slide south and west across the eastern plains into the central mountains this evening /early Tuesday.
41 Short range models are in good agreement with high pressure over the deep south beginning to loose its grip as a series of upper disturbances approach from the west tonight. This system will also push a cold front into north Georgia by early Wednesday morning. still expect area lows down in the 40s tonight and highs in the lower to mid 70s on Tuesday. The forecast starts off with the frontal boundary south of the area and cooler/drier air moving into with a high pressure ridge from the northern plains.
Dry conditions will persist across western Kansas today as upper level ridging continues to build northward across the Intermountain West. A weaker flow aloft and much drier air in the lower/mid levels filtering southward into western Kansas behind an advancing cold front will keep any precip chances out of the forecast through Tuesday night. Under mostly sunny skies, look for highs in the upper 50s(F) across central Kansas to the lower 60s(F) in extreme southwest Kansas this afternoon. Highs in the lower 60s with north winds of 10-20 mph. Rex block develops over the southern Rockies on Wednesday, with a weak closed low burying itself in Far West Texas, and upper ridging nosing eastward into the central plains. Stellar fall weather will result, with full sunshine, light winds, and temperatures near climatology in the lower 60s.
907 PM MST Mon Nov 7 2016 A ridge of high pressure will remain over the northern Rockies tonight with the axis centered over the Pacific northwest. Satellite is currently showing some mid and high level clouds streaming along the periphery of the ridge across southern Canada southeast into Montana. Overnight lows will be mild in the middle 30s to lower 40s given normal lows are just below freezing for this time of year. The exception will be out near the Dakota borders where temperatures will be near freezing. An impressive 588dm upper ridge slides into the forecast area Tuesday. The ridge gets flattened Wednesday and Wednesday night.
254 AM EST Tue Nov 8 2016 Another mild day is in store ahead of an approaching cold front. The cold front will bring showers into tonight into Wednesday morning and a return to seasonal temperatures. Showers will still be likely in the southeast ridges Wednesday morning as the cold front exits east. Showers will gradually diminish through the day, but colder low level northwest flow will keep a low chance for showers into early evening in the ridges. High pressure and anticyclonic flow will end showers quickly Wednesday evening, with gradual clearing.
A narrow band of showers along a cold front will progress sewd across srn WI this morning. The upper trough passage will follow from late morning through the early afternoon. For tonight, a ridge of high pressure will extend from the central Great Plains to north central WI with height rises as the upper trough moves away.
329 AM EST Tue Nov 8 2016 Dry high pressure will will persist over the area through Tuesday.