Aikyam-Lab/Synoptic-Bench huggingface dataset:
415 AM EDT Sun Aug 25 2019 High pressure over over Northern New England will provide cool- dry weather through Monday. And increasing southerly flow ahead of an approaching cold front will bring some wet weather for mid week. An elongated upper low just off the Southern New England coastal waters is bringing some patchy mid clouds westward. The low is forecast to move east today, but will likely provide for a mix of sun and clouds for the first half of the day until it moves east of Cape Cod later today. We will start to see clouds creep in as we develop a southerly flow with the high moving off the New England coast. As the southerly flow increases between the high to the east and an approaching front to the west, so too will the chances for rain.
1135 PM CDT Sat Aug 24 2019 High pressure centered over the Great Lakes into eastern Canada continues to make its presence felt, with comfortable ENE flow across the area offering tolerable dew points and afternoon temps in the mid 70s to near 80. Sunday, good chance PoPs for convection, driven by an evolving H5 trof to our west that will strengthen SSW moist flow over the area, along with providing lift and instability. Those chances will continue Sunday night into Monday as heights fall with the H5 trof axis moving overhead. This will be in advance of an approaching cold front to our northwest that will offer up yet another chance of convection late.
Rain chances return Monday night with an approaching cold front. Dry and quiet conditions should continue under high pressure, with northerly flow aloft maintaining below average temperature into Sunday. A deepening central Plains trough will shift high pressure eastward by early Monday, with return southwesterly flow supporting an increase in both temperature and moisture. As such, cloud cover should increase through the day Monday, with high temperature a degree or two warmer, yet still below climatological normals.
326 AM CDT Sun Aug 25 2019 A deep upper level low is expected to push across the US/Canadian border over the next few days, driving a noticeable change in the sensible weather in the mid-Mississippi Valley. This warm, moist flow in the low levels has resulted in isolated to scattered showers across the area this morning. Winds in the lowest portions of the will remain generally easterly, which coupled with fairly extensive cloud cover, will keep temperatures relatively cool. BSH On Monday, a surface cyclone will gradually move through the Upper Great Lakes in response to the progression of the previously mentioned upper level low. As the surface cyclone develops eastward, it will drag a cold front through the Midwest, reaching the bi-state area on Monday evening.
Isolated to scattered showers continue through tonight as warm air advection/moisture transport occurs ahead of another trough pushing out of the Northern Plains into the area. Models in good agreement with deepening trough over southern Canada/Northern Plains pushing a surface cold front into the area for Monday into Monday night. Looks like the bulk of the showers/storms exits east with the cold frontal passage by midnight Monday night.
441 AM EDT Sun Aug 25 2019 Noticeably cooler conditions are in the offing through the short term forecast period as a wedge of high pressure will be entrenched at the surface. Shower and thunderstorm chances will be lower this afternoon for much of the area given the cooler and more stable airmass behind the wedge front. Rain chances will also be increasing markedly from tonight into Monday as an upper trough advances eastward towards the area.
This trough is also responsible for some organized convection ongoing early this morning over KS. A cold front will be dropping SE across the Plains towards the state late Mon afternoon.
928 AM EDT Sun Aug 25 2019 Low level northeast flow in the H9-H8 layer will continue north of a surface trof extending northeast from Martin county into this afternoon. Will continue higher shower and storm chances up to 50 percent for this afternoon across Okeechobee/St Lucie and Martin counties closer to the trough where deeper moisture and low level convergence will be maximized. Highest CHC for TSRA will be in the KSUA vcnty in the mid-late afternoon closest to the surface trof axis and deeper moisture. Northerly winds 5-10 knots across much of the east central FL Atlantic waters today behind a surface trof of low pressure. Shower and storm chances will be highest from Ft Pierce Inlet to Jupiter Inlet this afternoon in the vicinity of the trof.
Hot and humid weather will return Monday with anomalously high dew points pooling ahead of an approaching cold front. Cold front will move into northeast OK by Monday evening with a very unstable airmass in place south of the boundary and ample shear for organized severe weather, with both large hail and damaging wind gusts possible.
710 AM EDT Sun Aug 25 2019 High pressure over over Northern New England will provide cool- dry weather through Monday. And increasing southerly flow ahead of an approaching cold front will bring some wet weather for mid week. An elongated upper low just off the Southern New England coastal waters is bringing some patchy mid clouds westward. The low is forecast to move east today, but will likely provide for a mix of sun and clouds for the first half of the day until it moves east of Cape Cod later today. We will start to see clouds creep in as we develop a southerly flow with the high moving off the New England coast. As the southerly flow increases between the high to the east and an approaching front to the west, so too will the chances for rain.
1015 AM EDT Sun Aug 25 2019 A large area of high pressure will continue to extend down the eastern seaboard into our region into Monday.
This trough axis will drop southward through the area today, bringing some drier and more stable northerly flow in the mid-levels to our region.
Cooler temperatures will follow the front for the early part of the week.
A cold front will move through the Northern Rockies today, bringing cooler temperatures and gusty westerly winds.
At the surface, a weak stationary front remains in place over western SD with low pressure now centered over west-central Manitoba. As the upper level trough deepens later today, lee cyclogenesis will occur south of the forecast area. Further west, high-res guidance suggests the potential for post-frontal storms across NE WY after 23z as the main trough axis pivots through the forecast area. Much cooler and drier air will filter in behind the front Monday into the week as most places will see highs in the upper 60s to 70s.
419 AM MDT Sun Aug 25 2019 Only minor changes to the forecast this morning as the plan for a warmer day with windy conditions in the mountains looks good. The other change was more wind over the higher mountains. There's a slight chance of some convection brushing the northeast corner with the cold front late tonight.
600 AM EDT Sun Aug 25 2019 High pressure will remain across region through the first half of the week. GOES water vapor imagery showed a developing upper low vicinity of the mid Atlantic coast. the high remains anchored to our north with the onshore flow to continue. especially over southern sections that will be closest to the developing upper low. Highs today will be in the lower and mid 70s. the upper low meanders north and east across the Gulf of Maine.
Temperatures will be 5 to 10 degrees cooler (near normal) today as a result of dry cold front which moved through last evening. The pattern shifts Monday night as an upper ridge moves across the Intermountain West.
/Issued 441 AM EDT Sun Aug 25 2019/ Noticeably cooler conditions are in the offing through the short term forecast period as a wedge of high pressure will be entrenched at the surface. Shower and thunderstorm chances will be lower this afternoon for much of the area given the cooler and more stable airmass behind the wedge front. Rain chances will also be increasing markedly from tonight into Monday as an upper trough advances eastward towards the area.
1033 AM EDT Sun Aug 25 2019 Currently - The area of low pressure that was centered over South Florida has smeared out northeastward into the Atlantic overnight. Short Term Update - The bulk of the vorticity associated with the low that was over Florida will continue to slip northeastward into the Atlantic this afternoon while Atlantic ridge extends across Cuba. A trough extending into Florida and ridging aligned over Cuba will result in mostly gentle southwest breezes across Keys waters.
405 AM CDT Sun Aug 25 2019 WV imagery shows the upper, negatively-tilted trough exiting the central CONUS for the MS Valley, which will allow the west coast ridge to return to West Texas and Southeast New Mexico for the next few days.
As a cold frontal passage takes place today, showers and thunderstorms may continue at times, along with a generally increasing northwest wind. For Monday, expect another cold front to push through the region with additional showers and thunderstorms.
950 AM EDT Sun Aug 25 2019 High pressure will remain across region through the first half of the week. GOES water vapor imagery showed a developing upper low vicinity of the mid Atlantic coast. the high remains anchored to our north with the onshore flow to continue. especially over southern sections that will be closest to the developing upper low. Highs today will be in the lower and mid 70s. the upper low meanders north and east across the Gulf of Maine.
218 AM PDT Sun Aug 25 2019 Ridge of high pressure remains over Central California today, meaning another day of 100 + degree heat.
Short term model guidance continues to indicate that highest rain chances will be during the overnight hours tonight as the tropical moisture in place interacts with a passing short wave trough axis. Conditions are expected to improve through the day tomorrow as the trough axis and deeper pool of tropical moisture pull east of the region.
A cold front has entered western North Dakota and will continue to slowly progress eastward today. CAM models then develop a new line of storms along the advancing cold front in western North Dakota this afternoon. A cold front across eastern Montana will move east and be the focus for thunderstorm initiation across western North Dakota late this morning. Highs today will be in the 70s to around 80, and lows tonight should be in the low to mid 50s.
530 AM EDT Sun Aug 25 2019 High pressure over over Northern New England will provide cool- dry weather through Monday. And increasing southerly flow ahead of an approaching cold front will bring some wet weather for mid week. An elongated upper low just off the Southern New England coastal waters is bringing some patchy mid clouds westward. The low is forecast to move east today, but will likely provide for a mix of sun and clouds for the first half of the day until it moves east of Cape Cod later today. We will start to see clouds creep in as we develop a southerly flow with the high moving off the New England coast. As the southerly flow increases between the high to the east and an approaching front to the west, so too will the chances for rain.
CAM models then develop a new line of storms along the advancing cold front in western North Dakota this afternoon. A cold front across eastern Montana will move east and be the focus for thunderstorm initiation across western North Dakota late this morning. Highs today will be in the 70s to around 80, and lows tonight should be in the low to mid 50s.
Showers and embedded storms will shift westward through the day today, with the highest chances in the vicinity of I-10 and I-75 in the mid to late afternoon. Slightly cooler temperatures are forecast today, with highs in the mid 80s across southeast Georgia and coastal northeast Florida, and the upper 80s to lower 90s elsewhere.
1037 PM EDT Sat Sep 30 2017 Dry high pressure will dominate the weather pattern through next Saturday.
/ISSUED 345 PM CDT Sat Sep 30 2017/ Drier/slightly cooler air is expected to continue filtering down into SE TX this evening. POPS should be- gin tapering off on Weds as low-level moisture decreases and the upper ridge begins to build over the area. Drier and warmer con- ditions to prevail the rest of the week.
/Issued 636 PM CDT Sat Sep 30 2017/ /00Z TAFs/ No concerns the next 24-30 hours, as VFR will persist throughout with strong surface ridging continuing to advect dry air from the Ozarks and Tennessee Valley. We expect overnight lows to cool into the upper 50s to the lower 60s.
800 PM EDT Sat Sep 30 2017 Low pressure departs as high pressure builds from the west tonight and Sunday. This high pressure over the northeast builds slowly east through the upcoming week, moving offshore by mid week as a cold front approaches from the west.
With the low level jet also intensifying at this morning, more widespread shower activity will quickly spread across the region in the warm air advection regime.
High pressure dominates the weather map this afternoon as another mild day brings plenty of sunshine and seasonal temperatures to the Midwest. Upper level ridge stretches from the Great Lakes to the central Gulf Coast this afternoon and quiet and mild weather is expected to last through the overnight hours. Guidance has been consistently too high with overnight lows under the ridge, and although the cirrus may come in a little thicker. Winds should become more southeasterly after a somewhat variable evening under the ridge. Across the CONUS, a wave digs in over the western half of the country, amplifying the pattern considerably, and putting Central IL on the edge of the ridge.
With mostly clear skies and winds becoming light tonight, low temperatures will drop into the lower 50s across much of the area with upper 40s along the Kentucky border into the Upper Cumberland.
913 PM EDT Sat Sep 30 2017 Low pressure departs as high pressure builds from the west tonight and Sunday. This high pressure over the northeast builds slowly east through the upcoming week, moving offshore by mid week as a cold front approaches from the west.
It will be a few degrees warmer Sunday afternoon as highs reach the lower to middle 70s.
900 PM EDT Sat Sep 30 2017 A seasonably cooler and crisp autumn airmass will sweep across the area this weekend with the risk of frost in the Alleghenies Sunday morning.
/issued 304 PM CDT Sat Sep 30 2017/ Upper ridge continues across area. Dewpoints to begin climbing just after daybreak as upper ridge centered btwn Ohio valley and great lakes shifts east, deepening easterly flow will also have a se component in low lvls, and moisture to finally reenter the area.
726 PM EDT Sat Sep 30 2017 Dry high pressure will dominate the weather pattern through next Saturday.
At least there was the option to stay huddled inside today and watch those pursuing higher education advect a small area of high pressure encircled in pigskin about a 500nm emitting surface. However, with sunshine, it will be noticeably warmer.
The pressure gradient has been compressed a bit by the strong high pressure system over Michigan. Upper level ridging will move east over the lower Ohio Valley tonight as well, with skies remaining clear. Typically cooler, low-lying areas will likely drop into the lower 40s. A low-level thickness increase would suggest a warmer afternoon tomorrow, but warming may be slightly offset by cirrus clouds streaming overhead.
Clouds will be on the increase from west to east Sunday ahead of short wave and surface warm front approaching from the west. As a broad upper trough slowly drops into the Northern Plains and western states early this week, an upper ridge gradually builds over the eastern half of the country.
Another day of seasonable temperatures across the area with many locations around 5 degrees warmer than yesterday. Satellite imagery currently showing some mid to high level clouds moving out of the area as the upper level trough that brought back cooler temperatures continues to move eastward out of California. More relatively sunny days along with seasonable temperatures can be expected as a high amplitude ridge builds towards us over the eastern Pacific. Interaction between the trough to our east and ridge to our west will bring gusty northerly winds to the area over the next couple of days, especially for the North and East Bay Hills and out over the coastal waters.
Snow levels were falling and should reach around 7 thousand feet tonight, which will impact the highest reaches of the Beartooth Pass with accumulating snow. Models continue to show some good breaks along the frontal convective line as it emerges from the higher terrain this evening. Rain will shift to snow in the high terrain, and will likely be enough overnight to close the Beartooth Pass.
However, as we get closer to daybreak Wednesday, expect precip to spread back in from SW-NE as the low lifts toward Nashville. The whole system will lift northeast through the lower Ohio Valley Wednesday through Wednesday night.
Will update to adjust POPS accordingly and make some minor adjustments to the low temperatures. Afternoon highs, mostly in the low 60s, are closer to normal low temperatures for mid-September. Tomorrow the low formally associated with Irma will begin to shift off to the North Northeast.
Heavier cloud cover than yesterday and cooler temperatures in our northern region are the main effects that we are seeing today & tonight. Lows overnight will be cooler than average (lower-60s/upper-50s) for one more evening before we start to gradually warm up throughout the week as a ridge to our west starts to build. This as Irma advances into the northeast CONUS and ridging becomes reestablished through the southeast Conus and adjacent coastal waters. Rain chances will remain in check as any significant atmospheric moisture will be confined to primarily the lower levels, while dry air on a northwest flow acts as an effective convective cap aloft. This as Irma advances into the northeast CONUS and high pressure becomes reestablished over the northwest gulf.
The low will move into south central Illinois tonight before pushing east tomorrow. The high temperatures on Wednesday will be below climatological normals due to cloudiness over the region. Kelly The stagnant weather pattern across the Midwest will finally break lose the second half of the work week with the remnants of Irma heading east and an upper level ridge building overhead.
1153 PM EDT Tue Sep 12 2017 High pressure will remain over the region through Wednesday.
1155 PM EDT Tue Sep 12 2017 Aviation Remnants from Irma will continue to weaken into an upper low that pushes into the Ohio Valley through midweek.
Remnants of Irma were located over the Lower Mississippi Valley this afternoon. Main effect for eastern Kansas has been high cirrus clouds and north to northeasterly winds which have kept temperatures cooler across the area. An upper level low will move off the eastern Pacific and into southern California tonight while the upper level ridge builds back into the Plains. Forecast soundings show dry air in the lower boundary layer so left out patchy fog. By Wednesday night, the remnants of Irma will be situated near the Ohio River Valley with a broad SW to NE oriented mid-level ridge stretching across the central U. Both the ridge and Irma remnants will shift further east through the end of the week as a strong mid- level trough develops and dives southward toward the Four Corners region.
Dry weather and less cloud cover have allowed for temperatures to climb into the mid and upper 70s along the Highway 84 corridor. Otherwise, what was once Irma has completed its merger with a broad low pressure system over northern MS/AL and is now post-tropical. Light to moderate stratiform rain will continue to fall over portions of our area as the low lifts to the north through tonight and into early tomorrow.
As the low moves northeast into the Ohio Valley, models show mid- level dynamic jet forcing/divergence aloft enhancing frontogenetic forcing over the area Wednesday. Chattanooga Airport, TN 60 69 60 78 / 50 50 40 20 Knoxville McGhee Tyson Airport, TN 58 72 60 74 / 10 40 70 30 Oak Ridge, TN 58 69 60 73 / 30 50 70 40 Tri Cities Airport, TN 54 77 60 71 / 10 20 80 50.
1101 PM CDT Tue Sep 12 2017 Quiet weather continues across the region, as high pressure maintains control across the upper midwest. The thermal ridge leans in even farther tomorrow, so expect a few degrees warmer than today, possibly reaching 90 degrees in western MN.
The high clouds associated with former hurricane Irma will begin to recede to the south and east overnight, leaving generally scattered high clouds or clear skies for Wednesday. As low pressure to the west edges slowly toward the east, light south to southeast winds will begin Wednesday afternoon at most sites.
654 PM CDT Tue Sep 12 2017 High-level cirroform cloudiness should slowly diminish from west to east tonight, with low-level ridge axis keeping fairly light and variable winds in place. Lee trough development will occur on Wednesday leading to southerly flow and temperatures warming to above normal across the forecast area.
Models have backed off on associated precipitation with this feature, so removed the low chances of showers from earlier forecasts. A weak lake breeze near the North Shore might provide just enough forcing to help trigger light showers over the higher terrain of the North Shore. Wednesday night begins with quasi zonal flow aloft over North America with the remnants of Irma over the southeastern CONUS and a trough axis pushing across the Canadian Rockies.
936 PM EDT Tue Sep 12 2017 High pressure over New York will move offshore today.
/issued 222 PM CDT Tue Sep 12 2017/ An upper low is over the southeast part of the country, and another upper low is just off the coast of California. Upper ridging is over the southwest part of the country, and the CWA is under north to northwest flow aloft. There is a slight chance of thunderstorms across the higher terrain Wednesday afternoon.
759 PM EDT Tue Sep 12 2017 Aviation Remnants from Irma will continue to weaken into an upper low that pushes into the Ohio Valley through midweek.
715 PM EDT Tue Sep 12 2017 An area of low pressure will track northeast along a retreating warm front that will pivot north across central NC into VA tonight. Also, adjusted hourly temperatures (warmer) to capture observed trends. Isolated showers continue to stream northward across central NC as a surface warm front lifts slowly north.
/issued 344 PM CDT Tue Sep 12 2017/ A few light showers have developed near the TX and NM state line along a wind shear axis between the remnant tropical system over the MS valley and upper ridge centered over the 4-corners.
Wednesday Night Through Tuesday Conditions are expected to hold fairly steady through the work week as our area remains between the remnants of 'Irma moving across the Ohio Valley, and the upper level trough over Canada.
High pressure remains draped across the Great Lakes with dry air overhead, leading to just a scattered cumulus field generally south of M-32, within a narrow corridor of higher moisture. Wednesday will be much more of the same, with dry air and relative high pressure leading to mostly sunny skies and another day of mid to upper 70s for most.
Upper level ridging will build into the region on the backside if IRMA creating a beautiful day Wednesday.
With high pressure dominating the region, winds will be light. Overnight lows tonight will range from around 60 to the lower 60s, that's several degrees below seasonal normals. For tomorrow, lots of sunshine will produce afternoon highs slightly warmer than today and well above seasonal normals, mainly in the mid to upper 90s. (Wednesday night through Tuesday) This period will start with an amplified upper ridge pattern over the 4 Corners region as one upper low will be over the eastern Conus and another one off the west coast. Through the end of the week, the upper ridge will flatten as it pushes east, due to the western upper low shifting northeast.
850mb temps in the mid 20sC under the ridge will keep highs in the 80s and 90s.