Aikyam-Lab/Synoptic-Bench huggingface dataset:
1101 PM MDT Tue Jun 20 2017 Current surface analysis shows stationary front near the Black Hills, with high pressure centered over northeast ND. Upper level analysis continues to show high pressure centered over eastern AZ, with ridging to the north across the intermountain west. Could see a stronger storm or two over western areas in the evening, then possibly a strong to severe storm later tonight to the east of the Black Hills, near the nose of the low level jet. Cold front over the Pacific NW will move quickly across the Rockies tonight and into western portions of the area Wednesday morning before stalling out over western SD during the day. Highs on Wednesday will range from the lower 80s over the Black Hills to near 95 over south central SD.
301 AM PDT Wed Jun 21 2017 High pressure will bring much above average temperatures through the weekend, with records possible again today. Still anticipating a minor "cool down" for today and Thursday as the ridge weakens across the Sierra and western Nevada. The ridge reamplifies later this week into the weekend with a return of the triple digits for many lower valley locations.
Thunderstorms are expected late tonight and again Thursday night ahead of a cold front.
349 AM CDT Wed Jun 21 2017 Generally northerly flow aloft is expected to continue through the weekend with a nearly stationary upper ridge centered across the desert southwest.
The lack of any real ridging overhead, along with cooler air aloft, will make for the coolest day of the week today. The relief will be short lived, however, as a building ridge to our west and a strong thermal trough will produce a warming trend Thursday into the weekend.
The upper level trough over the Great Lakes moves east, as a zonal jet sets up from Montana to lake Superior.
133 AM EDT Wed Jun 21 2017 Weak high pressure will slide south of the Commonwealth through this afternoon. A deep upper level trough will approach the region later this week and draw a plume of deep tropical moisture north from the Gulf Coast region.
Dry, zonal flow aloft today will replace yesterday's upper ridge.
Strong high pressure centered over the area will result in continued hot temperatures through the remainder of the week.
BMickelson Previous short term discussion: An upper ridge will flatten some into Tuesday providing zonal flow aloft across the state of Montana. The remainder of the forecast area will see lows ranging in the 50s to even low 60s in a few of the warmer spots. Weather change expected past midweek to cooler and potentially wetter conditions with a strong upper low moving across the region. Upper trof begins digging south from BC into the Pacific Northwest on Tuesday night with upper flow turning southwest and lee trof beginning to form in central Montana. Low level winds turn briefly southeast across the plains but moisture feed appears to be limited due to blocking by the remnants of Irma over the mid- Mississippi valley. Cooler air continues to filter south as the trof digs into the northern Rockies.
Dry air moving into the region will end rain chances starting today while also bringing warmer temperatures through the middle of this week.
547 AM MDT Mon Sep 11 2017 Strong and persistent mid/upper level ridging will persist over the Rockies through the period. A minor disturbance seen on GOES-16 WV imagery early this morning over southern WY and northern CO will meander slowly east and southeast today as it is trapped in the larger ridge aloft. With anemic flow at all levels of the atmosphere, convection should be dictated by terrain features so kept the best chances over the mountains and along the Cheyenne Ridge.
733 AM EDT Mon Sep 11 2017 Mostly dry weather and warming temperatures is expected this week with high pressure continues over the area. The ridge breaks down on Tue but a dry WNW flow aloft continues. Tonight will see potential for fog development again as high pressure continues to provide light to calm winds and clear skies. Min temps expected to be a couple degrees warmer as the ridge axis begins to shift slightly east, with warming aloft. 925mb temps warm a bit more reaching near 18C around 21z so we are looking at the 70s to around 80 in the warmer valleys.
1250 PM EDT Mon Sep 11 2017 High pressure will remain across the region today and Tuesday. High pressure will return for the weekend. High pressure will remain overhead today. Temperatures aloft will be several degrees warmer today and do not think any of the cloud cover will have much impact on highs. Therefore have temperatures warming today into the lower/mid 70s.
520 AM MDT Mon Sep 11 2017 Water vapor shows rather flat upper ridge over the Northern Rockies and Northern Plains. At the surface, low center is located over south central SD with trof extending into eastern CO. Flat upper ridge expected to remain in place through mid week, leading to very warm temperatures. Upper level trof will dig through the Pacific Northwest during the second half of the week.
949 AM EDT Mon Sep 11 2017 Warmer temperatures this week with highs mainly in the 70s. It will be warmer today as 850 mb temperatures are forecast to rise to 13 to 15 degrees C. Mixing is not expected to be deep enough to reach 850 mb due to the strong high pressure overhead. However, highs expected to be in the 70s with mid and upper 60s across the higher terrain of the western Adirondacks, eastern Catskills, southern Vermont into the Berkshires.
The ridge of high pressure will break down by later this week with a chance of showers.
High pressure will remain over the area for the early part of the week. A series of storm systems will bring cooler and wetter conditions to Utah and southwest Wyoming for the middle to latter part of the work week before drier conditions return for the upcoming weekend. Strong high pressure continues to be the dominant feature over the Rockies, and this ridge will only amplify through today. Isolated showers and thunderstorms are expected to once again initiate over the higher terrain today, with slow storm movement due to light steering flow. Slightly increased instability and southwesterly flow is expected on Tuesday, as a Pacific closed low slowly starts to inch inland.
610 AM CDT Mon Sep 11 2017 Area will remain dry and warm over the next several days as large ridge of high pressure over the western US pushes east through the week. This ridge will keep remnants of Irma to our east across the Ohio river valley while a deepening trough moves across the western US. The above mentioned upper ridge axis will shift east of the area late in the week allowing southwesterly mid-upper level flow to persist into the weekend.
1154 AM EDT Mon Sep 11 2017 High pressure will maintain dry weather today. Periodic unsettled weather is expected the rest of the week with slow moving low pressure. High pressure will remain in place through tonight as Irma weakens and lifts northwestward toward TN. Outside of some high cirrus from the weakening tropical system, conditions will remain dry, with warming mid-levels supporting slightly warmer high and low temperatures today and tonight. Dry air in place and the considerable distance from the low are expected to be limiting factors for rainfall.
Drt should see the higher afternoon speeds just under 10 knots with direction just west of north. Mid/upper level ridge builds from the Rockies into Northern Mexico while a deepening mid/upper level low drifts from the southeastern states into the lower and middle Mississippi Valley with tropical cyclone Irma. Little change in temperatures is expected today with a warming trend beginning on Tuesday as a thermal ridge begins to build into our area.
The pressure gradient between the high north of the area and Irma will result in windy conditions.
728 AM EDT Mon Sep 11 2017 A large area of high pressure centered over the Upper Great Lakes will maintain control of our local weather into Tuesday. The more- shallow mixing height will keep temps cooler than 70F over the Laurels.
441 AM PDT Mon Sep 11 2017 Warmer weather will return for Monday and Tuesday as a ridge builds over the Inland Northwest.
High pressure building in with scattered to broken high cirrus today. Cold front is about half way thru the fcst area at 08z.
922 AM PDT Mon Sep 11 2017 A closed low off the coast may help a couple isolated thunderstorms form this afternoon, mainly over San Bernardino County. WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO At 830 AM, a cut off upper low remained off the coast of SoCal, with weak difluent flow and mid level instability proving sufficient for a few showers and thunderstorms over Riverside and San Bernardino Counties despite a strong capping inversion evident near 600 mb on the 12Z NKX sounding. The low off the coast will shift slightly northward, pushing the region of best difluent flow to points north of San Bernardino County by this afternoon.
745 AM EDT Mon Sep 11 2017 Aviation High pressure will continue to provide sunny and pleasant weather today and Tuesday, with warmer high temperatures in the mid to upper 70s.
842 AM EDT Mon Sep 11 2017 High pressure will maintain dry weather today. Periodic unsettled weather is expected the rest of the week with slow moving low pressure. Mostly sunny and dry weather is expected today under high pressure. Cirrus advancing N well ahead of Irma should continue to partially erode as it encounters and upper high and dry air aloft as observed on the 00Z PIT sounding. Dry air in place and the considerable distance from the low are expected to be limiting factors for rainfall.
952 AM EDT Mon Sep 11 2017 High pressure is settling in currently and will stick around for at least the first half of the week. A warm front associated with the remnants of Irma will bring some moisture northward by late week possibly producing a few showers. Morning sounding indicates dry air above the surface that should allow dewpoints to fall into the low 40s this afternoon in places. No rain is expected and with upper low pulling east. That should put a fairly large area in the low to maybe mid 80s in the favored warm spots.
1048 AM EDT Mon Sep 11 2017 High pressure will remain overhead through tonight.
1018 AM EDT Mon Sep 11 2017 High pressure over the area will remain in place through Tuesday with dry weather continuing. High pressure will remain overhead today with strong subsidence and dry air, providing nearly full sunshine. After a cool start this morning, abundant sunshine along with the dry air will allow temperatures to recover into the lower to mid 70s in most areas, and upper 60s along the immediate lakeshores. On Tuesday the center of Irma's remains will slowly meander its while broad ridging at all levels will remain intact across our region. Tuesday night Irma's remnant low pressure center will linger over the central Mississippi Valley.
1019 AM EDT Mon Sep 11 2017 Mostly dry weather and warming temperatures is expected this week with high pressure continues over the area. The ridge breaks down on Tue but a dry WNW flow aloft continues. Tonight will see potential for fog development again as high pressure continues to provide light to calm winds and clear skies. Min temps expected to be a couple degrees warmer as the ridge axis begins to shift slightly east, with warming aloft. 925mb temps warm a bit more reaching near 18C around 21z so we are looking at the 70s to around 80 in the warmer valleys.
1156 AM EDT Mon Sep 11 2017 High pressure will maintain dry weather today. Periodic unsettled weather is expected the rest of the week with slow moving low pressure. High pressure will remain in place through tonight as Irma weakens and lifts northwestward toward TN. Outside of some high cirrus from the weakening tropical system, conditions will remain dry, with warming mid-levels supporting slightly warmer high and low temperatures today and tonight. Dry air in place and the considerable distance from the low are expected to be limiting factors for rainfall.
746 AM EDT Mon Sep 11 2017 Warmer temperatures this week with highs mainly in the 70s. It will be warmer today as 850 mb temperatures are forecast to rise to 13 to 15 degrees C. Mixing is not expected to be deep enough to reach 850 mb due to the strong high pressure overhead. However, highs expected to be in the 70s with mid and upper 60s across the higher terrain of the western Adirondacks, eastern Catskills, southern Vermont into the Berkshires.
945 AM EDT Mon Sep 11 2017 High pressure over the eastern Great Lakes will weaken on Monday, though dry conditions will remain in place over the Ohio Valley. For now, a rather flat max temperature grid will be used -- with highs in the lower 70s, very similar to Monday.
High pressure is beginning to build back into the region today. The high will keep the drier air in place, so no cloud cover is forecast. Winds tonight go L/V as the high drifts into the northwest Gulf. Highs will again reach right around normal in the low to mid 90s, with lows tonight again falling about 5 degrees below average.
923 AM EDT Mon Sep 11 2017 High pressure will remain across the region today and Tuesday. High pressure will return for the weekend. High pressure will remain overhead today. Temperatures aloft will be several degrees warmer today and do not think any of the cloud cover will have much impact on highs. Therefore have temperatures warming today into the lower/mid 70s.
710 AM EDT Mon Sep 11 2017 High pressure is settling in currently and will stick around for at least the first half of the week. A warm front associated with the remnants of Irma will bring some moisture northward by late week possibly producing a few showers. No rain is expected and with upper low pulling E. That should put a fairly large area in the low to maybe mid 80s in the favored warm spots.
620 AM CDT Mon Sep 11 2017 Latest water vapor satellite imagery shows upper level ridge over the southern Rocky Mountains/Great Lakes Region. With upper level ridge over the forecast area mostly clear skies were seen per latest infrared satellite imagery. Subsidence under the ridge will continue to allow for dry weather and mostly sunny skies across the forecast area.
A wind advisory remains in effect through Tuesday afternoon with gusts up to 50 mph possible at the highest elevations as Irma passes to our southwest. Chattanooga Airport, TN 68 61 66 60 / 100 100 70 40 Knoxville McGhee Tyson Airport, TN 67 61 74 60 / 90 100 50 30 Oak Ridge, TN 66 59 72 60 / 80 100 50 30 Tri Cities Airport, TN 67 57 75 58 / 60 70 40 30 NC.
An upper ridge will continue to influence the region today for warm and dry conditions. A better moisture push under the upper level flow aloft looks to be on track for Tuesday as the southwesterly flow combines with increased instability ahead of an incoming trough from the west. An upper ridge will reside over SE Oregon and SW Idaho today for dry conditions and above normal temperatures. The ridge will weaken tonight through Tuesday as a south-southwest flow imports moisture from the Great Basin, resulting in a chance of showers and thunderstorms - mainly near the Nevada border.
1040 AM CDT Mon Sep 11 2017 High pressure is slowly losing some grip on central Illinois as Irma pushes out of Florida and toward western Tennessee. Not much of a shift in the forecast overall, as high pressure slowly loses ground to the dynamics of Hurricane Irma pushing into the southeastern United States. Clouds will help inhibit the cool down as overnight lows will be a few degrees warmer tonight.
/issued 310 AM CST Sat Nov 18 2017/ After record high temperatures yesterday, a cold front will usher in much cooler and drier air to the southern Plains. Although temperatures will be much cooler today, very strong winds and low afternoon humidity will result in elevated to near- critical fire weather conditions. The wind will quickly decrease after 4 pm and with very dry air and clear skies, freezing temperatures will be possible by sunrise Sunday.
Strong cold front has blasted through the area. the models were having a little trouble with the upper trough coming through. The Ukmet, Canadian, and Gfs were doing a little better on the low level thermal field. Cooler air mass in place but will be offset by plentiful sunshine. Mid level ridge moves into the area with decent west to northwest flow aloft.
Another day of a large temperature spread with highs only in the teens across the north central through the upper James River Valley, to the mid to upper 30s southwest as cool high pressure builds across North Dakota through the day. Upper level analysis places low pushing into western Hudson Bay, with trough stretching south/southeasterly towards the central plains. Weak wave sliding along the backside of the trough is producing some light snow over portions of north central North Dakota, though this has been diminishing some over the past hour. Otherwise, a quiet day is expected with clearing skies as ridge to the west starts to build in. Ridge builds into the area on Sunday bringing warming temperatures to the area.
Although there will be areas of gusty winds over the higher mtn areas, the lower elevations are expected to have relatively light winds tonight and Sun. Temps on Sun will be a little warmer than today, and most locations should see highs that are slightly above average. The San Luis Valley should see highs in the upper 40s to around 50, and the upper Arkansas River valley should see highs in the lower 50s.
The short term is going to be dominated by high pressure.
The longer term issues are timing of cold fronts/short wave troughs over the region and any chance of precipitation as upper flow pattern remains more northwest.
An upper ridge will gradually build over the southwestern US early this week, which will keep the area under northwest flow aloft.
Aloft: The moderate-amplitude trof that moved thru this morning was E of the CWA and the flow has become NW. A broad ridge was over the Wrn USA and advancing E. This ridge will deamplify/ flatten as it conts E tonight and arrives here tomorrow. This high will sink completely into TX tonight and then begin heading into the lwr MS Vly tomorrow. Winds will back to SW tonight as the low-lvl ridge moves thru with WAA/downslope warming developing. The upper trough continues to depart to the east on Sunday into the Ohio valley region, with rising heights and warmer air expanding east of the Rockies and onto the plains states. Low relative humidity values are still expected to average in the low 20th percentile across our southern Kansas counties, and wind gusts are forecast near 20 mph.
South to southwest winds will also continue to increase into the afternoon as the LLJ strengthens up to 55 knots and a strong cold front approaches from the northwest, with gusts up to 45 mph expected at times. MVFR cigs and gusty south to southwest winds up to 35 knots will affect airports this afternoon ahead of a strong cold front.
Sunny, windy and warmer. A modest warming at 850 mb to near 8C and good downslope components (along with full sun and dry ground) will allow for most locations to reach the lower to perhaps mid 60s. Medium range models show no hints of any pattern changes, with a polar vortex finding a home near Hudson Bay and eastern Canada, while a strong upper ridge remains stagnant over the eastern Pacific near Baja California. At noon on Thanksgiving Day, 12z ECMWF depicts a deep cold 500 dm low at Hudson Bay, and an impressive 595 dm ridge near San Diego. So, the forecast is reduced to minor dry cold fronts, wind shifts, periods of cirrus and temperature fluctuations.
Cold front that moved through southeast WYoming and Nebraska Panhandle yesterday is currently across northern New Mexico. A fairly raw day with highs struggling to reach freezing west of the Laramie Range and mid 40s east. Those raw northwest winds will be with us most of the day, so if out and about today, we would recommend dressing in layers as wind chills will be in the low 20s out west and near freezing east. A warmer day for Sunday as winds begin to crank up from the west.
and Sunday A cold front continues to slowly track through Wisconsin this morning. Once this area of more substantial moisture exits the region, mainly light snow or drizzle is expected for the rest of the morning into the early afternoon as this low pressure system exits to the east. Until the better moisture arrives up north, some freezing drizzle is possible today given the colder surface temperatures. The lake effect should come to an end later Sunday morning into the afternoon hours as high pressure builds in across the upper Mississippi Valley.
Showers/thunderstorms will exit the SE part of the FA by sunset as the sruface cold front moves east into central KY. Strong cold air advection behind the surface front will plummet temps to freezing or below tonight. A cold NW flow aloft will set up over the area in the wake of the departing 500mb trough. Despite full sunshine Sunday temps will only rise into the 40s with max temps north of Highway 13 in southern IL to around OWB only reaching the lower 40s.
A cold front moving across the region will bring cooler temperatures and an end to gusty winds for most, as a storm system exits the region. For the lower deserts lows tonight will be the coldest this Fall so far. Higher confidence that Kingman and Pahrump will experience a longer duration of temperatures below freezing.
242 PM CST Sat Nov 18 2017 Skies have cleared through the day with strong subsidence behind the upper trough exiting to the southeast. With high pressure spreading across the area tonight and Sunday, quiet weather is expected.
The cold front is on its way south expected to push offshore around 6 PM this evening, with far western extension already moving through Cotulla and approaching Victoria as of writing. Winds have veered out of the SW ahead of the front due to a prefrontal trough. Temperatures tonight are expected to cool into the mid to upper 40s as cooler and drier air moves in. Strong northerly winds will develop in wake of the cold front this evening. Gale Warnings are in effect for the gulf waters as very strong winds aloft are expected to mix down to the surface over the warmer waters.
234 PM EST Sat Nov 18 2017 Strong frontal system progged to push quickly across the area, driven by amplifying upper trough currently across the east central plains and western TN Valley. Enhanced gradient winds will likely be of more impact with the system as the low deepens to the north with strong CAA on the heels of the fropa. While skies will be mostly clear due to quick ridging/subsidence in the wake of the front, highs Sunday should only make it into the low to mid 50s for most areas given the aforementioned strong CAA.
/Issued 357 AM CST Sat Nov 18 2017/ Strong cold front moving through the Panhandles this morning will promote windy conditions for all areas. Upper level high pressure will slowly amplify off the Pacific and track eastward over the Baja Peninsula through midweek. As a result heights will start to increase and warmer temperatures will be in store.
Synoptic moisture peels out to the northeast through this evening as low pressure continues to track by to our south. Background pattern remains negative PNA, with high amplitude ridging over the western CONUS and troughing over the eastern. A series of clippers running along the baroclinic zone, and through the Great Lakes, will provide periodic reinforcement of the eastern troughing with colder air helping to deepen the troughing.
Highs will range from around 30 degrees across the far northeast CWA to the low 40s over the southwest CWA. Continue to lean on the higher end of available guidance in regards to wind speeds today.
Gusty north to northwest winds will continue into tonight, as low pressure lifts north into the eastern Great Lakes. Temperatures will fall into the low to mid 20s overnight, as colder air filters in from the north. High pressure pushing across the southern US will allow winds to become westerly, and eventually southwesterly Sunday. Sunday looks cool and dry, with highs in the low to mid 30s.