Aikyam-Lab/Synoptic-Bench huggingface dataset:
A band of rain/snow over eastern MT and WY is continuing to push east along a cold front that is moving through the area. Cooler air mass will yield lows in the upper 20s tomorrow morning under clear skies. By afternoon, temps warm into the low to mid 40s with increasing cloud cover moving in from the west by later in the day. Tomorrow night, a strong jet slides into the northern Rockies ahead of an approaching low pressure system.
655 PM EST Tue Nov 14 2017 A southerly flow of air will develop on Wednesday bringing warmer air and at least partial sunshine.
Cooler air will filter into the nrn interior later tonight with lows ranging form the mid to upper 50s across Lake county to the lower 70s along the Martin county coast.
528 PM CST Tue Nov 14 2017 Light southeast winds to prevail overnight ahead of an approaching cold front that will move across the region on Wednesday evening. /issued Issued by National Weather Service JACKSON MS/ A warmer than normal night is expected throughout the ArkLaTex as warm moist air continues to be advected into the region from the south. Lows tonight will range from the upper 50s in to the lower 50s in north-central Louisiana.
A southeastward moving cold front will move into MO tonight.
/issued 341 PM CST Tue Nov 14 2017/ Upper level pattern shows the apex of a trough passing east across the eastern quarter of the country.
However, a cold front will shift winds to the northwest and quickly return conditions to VFR starting around GAG and WWR after midnight and reaching central OK late Wednesday morning. Overall, rain chances will be low, but the highest chances will be along and near this front.
A cold front will move through KABI by midmorning Tuesday, with postfrontal MVFR ceilings after passage. A lee trough has tightened the pressure gradient across the area, and winds have been gusty across the much of the Concho Valley and Heartland. Overnight lows will be warm with temperatures in the low to mid 60s.
The two recent areas of focus are just off the upper Keys, and over the Straits south of the lower Keys. An expansive high pressure cell over the eastern United States will persist for much of the week.
343 PM MST Tue Nov 14 2017 Surface cold front currently moving through northeast CO will be dropping south of the Palmer Divide late this afternoon, and through all of the southeast plains by 03z. With the arrival of the cold front, will see a wind shift from the northwest to north in the 15-25 mph range before winds decrease overnight. Cooler temperatures are in store for Wednesday along with lighter winds, especially for the southeast plains where values should max out near to slightly below climo. West winds will still be gusty across the higher elevations of the mountains in the afternoon with speeds around 15-30 mph.
946 PM EST Tue Nov 14 2017 High pressure and dry air will remain in control of the region through Wednesday.
Temps have dropped a little faster than forecast in the hourly grids, but the forecast lows in the lower to mid 30s looks on track.
349 PM EDT Fri Aug 25 2017 Quiet forecast through most of the weekend as high pressure drifts slowly eastward across the Great Lakes. With a fairly dry airmass and a northeast component to the wind field around the high, expect another cool night tonight with lows dropping into the 40 degree range.
Deep layer shear continues to remain on the low end range of 10 to 15kt.
1213 PM CDT Fri Aug 25 2017 303 AM CDT Early morning GOES water vapor imagery depicts drying and subsidence across the western Great Lakes in the wake of a strong mid-level short wave trough heading into southern New England. Northeast winds will produce a bit of lake cooling, with afternoon temps expected to range from around 70 near the shore to the low- mid 70's further inland. Guidance temps in the low-mid 50's appear reasonable for overnight lows. Ratzer 303 AM CDT Dry weather looks to continue through Saturday, as short wave upper ridge remains across the region. Some increase in mid-high clouds is expected as the Northern Plains short wave pushes into the ridge axis, though temperatures should continue to moderate a bit into the mid-upper 70's away from the lake as winds turn more southeasterly.
243 PM MDT Fri Aug 25 2017 Cold front across eastern Montana this afternoon will drop southward across eastern Wyoming and western Nebraska tonight. It appears that we will dry out significantly Saturday on the northeast side of the low to midlevel ridge axis. Looking like a warm and pretty dry week for the CWA as the area resides under the northeast part of a large upper high that will be anchored over the southwest part of the CONUS.
1126 AM MDT Fri Aug 25 2017 Current surface analysis shows frontal boundary/warm front stretching from far northwest SD to north central NE. A cold front extends from central SK to southern ID. Weak low pressure is developing along the boundary across southwest SD and will move east- northeast through the afternoon and evening with the front. Upper ridging sits across the upper Midwest this morning with near zonal flow across the northwest CONUS. Strong upper ridging is then progged to develop across the western CONUS with the region sitting under northwest flow aloft.
132 PM EDT Fri Aug 25 2017 High pressure will keep fair weather through the weekend.
1210 PM CDT Fri Aug 25 2017 Weak upper level ridging to the west will maintain another quiet day across our area while broad northwest upper flow keeps temperatures a few degrees below average.
Isolated showers and storms have started to develop across the area this afternoon, although the vast majority have been confined to the higher elevations through 21Z.
Upper high center to be over Four Corners/Great Basin by 26/12Z. Storms that do develop will favor the high terrain and will generally move toward the south or southwest over lower elevations.
A building ridge over the area will result in a warming trend will continue thru the weekend across the interior with maximum temperatures at least 10 degrees above normal.
1239 PM CDT Fri Aug 25 2017 Showers and thunderstorms remain across northwest Iowa this morning on the nose of the low level jet and persistent warm air advection. Shear is largely weighted to the low levels with the overall deep layer shear around 25 kts. As the evening progress and the low level jet becomes entrenched across the region, damaging winds could also become a threat. Should see mostly clear to partly cloudy skies on Saturday night as a ridge of high pressure builds in.
1244 PM CDT Fri Aug 25 2017 Showers and thunderstorms are going over north central SD as an upper level trough and surface front is slowly pushing eastward across this area. These storms should weaken as they progress eastward, or away from the upper level trough. Taking a look at the 500mb pattern, a 500mb ridge over the Dakotas will exit east as a trough shifts across mainly ND and northern SD this afternoon and evening. Concentrated the highest qpf around or over 0. Expect an overall slower movement of the storm system (and storms themselves at around 20kts or less), so have slowed down the exit in the forecast a bit, and kept the higher precipitation amounts over our southeast and eastern counties.
310 PM MDT Fri Aug 25 2017 A weak Pacific low pressure trough moving across the Northern Rockies and northern Great Basin this afternoon and evening will bring scattered showers with isolated thunderstorms with small hail and gusty winds to the area. The trough will shift east overnight with a few lingering showers after midnight. Then dry and warmer high pressure will build north and east from the Desert Southwest and Great Basin.
250 PM CDT Fri Aug 25 2017 Visible shots reveal the higher clouds readily seen by observation and confirmed with some moisture showing up at and above 500 mb on gridded time/height cross sections. Surface obs/analysis shows temps pushing the lower 80s as dew points hover in the upper 50s/nr 60F in light nely flow.
218 PM EDT Fri Aug 25 2017 The forecast area will be between a frontal boundary off the Southeast Coast and high pressure ridging southward along the Appalachians over the weekend. An area of low pressure will develop along the front and lift northeastward.
318 PM EDT Fri Aug 25 2017 High pressure and dry conditions are expected through the weekend.
329 PM EDT Fri Aug 25 2017 Upper air pattern consists of a 500 mb ridge over the northern plains up through Manitoba this morning.
Upper ridge builds in over the weekend for dry and warmer conditions.
137 PM EDT Fri Aug 25 2017 Wx nil, as high pressure pushes into northern MI. Pattern synopsis and forecast: Upper troughing was over the NE conus early this morning with weak NW flow aloft over nrn Michigan. Ridging at the surface and aloft continues to provide pleasant late summer weather Saturday.
410 PM CDT Fri Aug 25 2017 Visible shots reveal the higher clouds readily seen by observation and confirmed with some moisture showing up at and above 500 mb on gridded time/height cross sections. Surface obs/analysis shows temps pushing the lower 80s as dew points hover in the upper 50s/nr 60F in light nely flow.
146 PM EDT Fri Aug 25 2017 Upper air pattern consists of a 500 mb ridge over the northern plains up through Manitoba this morning.
120 PM EDT Fri Aug 25 2017 Aviation High pressure will bring fair weather into the weekend.
An area of low pressure is currently in place across the Tampa Bay area.
Southerly winds will continue overnight with high pressure to the east and troughing across eastern Colorado.
215 PM EDT Fri Aug 25 2017 High pressure will keep fair weather through the weekend.
321 PM MDT Fri Aug 25 2017 Upper level ridge centered over the Desert Southwest and Great Basin will keep warm and mainly dry conditions over the area. Isolated showers and thunderstorms will be possible through early evening, mainly over the higher terrain and across the eastern plains. The upper level ridge intensifies a little on Saturday. Expect slightly warmer temperatures over northeast Colorado with highs in the lower to mid 90s. There is a slight chance for weak convection over the higher terrain and along a boundary over far eastern Colorado.
310 PM EDT Fri Aug 25 2017 Canadian high pressure will take charge through the weekend providing dry quiet weather with below normal temperatures. A short wave is moving east of the area with the base of one upper level trough. High pressure at the surface over the western Great Lakes will move in tonight with dry air and nearly calm winds. Highs in the low 70s. The base of the upper level trough will move east the rest of the weekend. Slow warming but still cool with high pressure over the northeast US.
This should allow some of the cloudiness ahead of this wave to shift into the lower Great Lakes on Saturday. The southerly lower level flow ahead of this system will steer some slightly warmer air into the region, which should allow temps to inch up a bit more than the seasonably cool conditions today, in spite of some increased clouds. KMD 303 AM CDT Dry weather looks to continue through Saturday, as short wave upper ridge remains across the region. Some increase in mid-high clouds is expected as the Northern Plains short wave pushes into the ridge axis, though temperatures should continue to moderate a bit into the mid-upper 70's away from the lake as winds turn more southeasterly.
High pressure remains centered to our north tonight with only a few passing cirrus expected in a northwesterly upper-level flow. Trough axis across the Northeast CONUS pivots eastward on Saturday allowing some subtle ridging across the area. Models hinting at the potential for some showers or thunderstorms across the higher elevations of the TN/NC mountains on Saturday afternoon as diurnal surface heating and an upslope flow leads to some marginal forcing along the terrain for slight chance PoPs. Several low pressure systems try to develop across the eastern half of the US. The initial concern is a low pressure developing across the Great Lakes region.
344 PM CDT Fri Aug 25 2017 Western GRT LKS high pressure maintaining mainly dry conditions acrs the area, and will look to continue to do so through Saturday.
609 PM EDT Fri Aug 25 2017 High pressure under northwest flow aloft will maintain cool temperature for the weekend.
449 PM MDT Fri Aug 25 2017 Current surface analysis shows frontal boundary/warm front stretching from northwest SD to south central SD. A cold front extends from central SK to southern ID. Weak low pressure along the boundary near south central SD will move east-northeast through the afternoon and evening with the boundary. The last of the upper level disturbances, along with the cold front to the west of the region, will pass across on Saturday.
232 PM EDT Fri Aug 25 2017 The forecast area will be between a frontal boundary off the Southeast Coast and high pressure ridging southward along the Appalachians over the weekend. An area of low pressure will develop along the front and lift northeastward.
331 PM CDT Fri Aug 25 2017 A weak trough is moving across the Plains as Hurricane Harvey is intensifying with the warm waters just off of the south Texas coast with anticipated landfall to be this evening on this category three storm meaning possible wind speeds of 110-130mph.
200 PM EDT Fri Aug 25 2017 High pressure and dry conditions are expected through the weekend.
Other than a period of lake stratus over the southern Lake Huron basin/eastern Thumb region this morning, high pressure will bring generally sunny/clear conditions today through Saturday. Both days will also sport very little wind under the high pressure.
132 PM EDT Fri Aug 25 2017 The forecast area will be between a frontal boundary off the Southeast Coast and high pressure ridging southward along the Appalachians over the weekend. An area of low pressure will develop along the front and lift northeastward.
333 PM MDT Fri Aug 25 2017 Current surface analysis shows frontal boundary/warm front stretching from northwest SD to south central SD. A cold front extends from central SK to southern ID. Weak low pressure along the boundary near south central SD will move east-northeast through the afternoon and evening with the boundary. The last of the upper level disturbances, along with the cold front to the west of the region, will pass across on Saturday.
Northeast Montana starts the evening sandwiched between the Canadian upper low and a broad upper high over the Southwest. Then a broad upper ridge over the West begins to reassert itself Saturday afternoon with clearing skies. Temperatures behind the front and with northerly flow earlier will be cooler than the previous night. Saturday afternoon, weak wind and the day beginning cooler than yesterday will result in temperatures being only slightly warmer than Friday. The approaching ridge will bring mostly sunny skies from the west. The inherited long range period as described below remains squarely on track depicting an upper level ridge remaining over the wester U.
Storms will taper off through the overnight hours as cooler and drier air makes it's way into the region. A cold front will advance across the forecast area overnight. The surface cold front associated with the low pressure will swing southeastward and is expected to move through the CWA during the overnight hours accompanied by showers and thunderstorms. Convection will become more widespread, with increasing chances for thunder, during the afternoon and evening hours as forcing for ascent increases along and ahead of the cold front. Precipitation chances should diminish quickly after the passage of the cold front which is expected to exit the CWA by mid-to-late morning Tuesday.
1247 PM EST Mon Mar 5 2018 High pressure will remain in place today. A cold front will move through Tuesday night, followed by high pressure.
Weak high pressure aloft and breezy offshore winds will bring warm and dry conditions to the area through mid week. Moist southwest flow aloft ahead of a trough will likely bring increasing clouds, cooler conditions, and increasing shower chances later this week. Much warmer day today under clear skies, light offshore flow, and a weak ridge aloft. Even warmer temps expected Tuesday with a similar offshore gradient and even stronger ridge aloft. There will be quite a bit more in the way of high clouds as we're seeing an upper low well offshore starting to pull some of those in from the southwest.
Upper air analysis from this morning showed a mid level trough across the central US with zonal westerly flow across south central Texas. At 2 pm this afternoon, the surface cold front was essentially along an Austin to Boerne to Uvalde line, and moving southeast. High pressure and dry air will filter in to the region in wake of the passing cold front, with northerly winds persisting.
Surface analysis at 21Z has cold front from Caldwell/College Station to Crockett with a line of showers and thunderstorms along it.
Overnight water vapor imagery showed a potent upper trough axis along the Rocky Mountain Front Range, with surface cold front and associated precipitation across central SD/NE. Good agreement with the short range models/ensembles with the upper low over eastern MT/northeast WY moving southeast into SD/NE today and quickly intensifying. The low tracks slowly east into MN/IA tonight and Tuesday. It will be quite windy Tuesday east of the Laramie Range as strong winds aloft mix down on the backside of the intense Midwest upper low. Northwest flow aloft will weaken as the Midwest upper low lifts northeast across the Great Lakes.
Despite a cooler air mass moving in behind the front, it's very dry. Finally, we still have a very dry ground, and with the high wind we'll also have the potential for blowing dust today throughout the region.
Closer to the surface a warm frontal boundary will pass through the area overnight, bringing with it a likely chance of showers for most locations in our forecast area. Not far behind this feature a cold frontal boundary will enter the Commonwealth from the west during the day Tuesday and speed through eastern Kentucky late Tuesday evening.
Forecast confidence is high: Low pressure will approach the area tonight, passing by to the south on Tuesday. A push of deeper moisture and lift will move through ahead of the low later this afternoon into tonight, bringing a relatively quick round of accumulating snowfall. It's still not out of the question to see a brief period of freezing drizzle late evening into the tonight as the snow winds down, but models suggest much of the moisture and lift will be gone by the time this would be possible. Thus less confidence in freezing drizzle causing in impact with this event. The snow will likely fill back in later Tue morning into the afternoon as the low passes by just to the south.
We should lose the lower clouds in the wake of the frontal boundary later today/this evening as well with all terminal sites becoming VFR after 00z this evening. We have trimmed likely pops over NE TX/SW AR where a pre-frontal trough can be imagined in the popcorn of reflectivity.
Dewpoints in our eastern counties are still in the mid 20s, with air temps in the low to mid 40s. There was a band of sleet and areas of freezing rain early this morning in the northern half of our forecast area. This gradually filling upper low will be a feature across the Midwest through the middle of the week, gradually being absorbed by another low dropping southward from Hudson Bay. South of the low track, winds will be rather gusty as well, around 30 mph or so in areas south of I-72.
A weak weather disturbance in northwest flow aloft will bring scattered snow showers to the area this afternoon followed by drier conditions through mid- week as an upper level ridge builds over the area.
We're a solid 10 degrees away from the high and with cloud cover and showers, I don't think we'll quite get to the forecast highs. MVFR conditions should be the lowest KCKV/KBNA/KMQY experiences, with KCSV likely to drop to IFR for a few hours prior to sunrise Tuesday.
Most of the snow is most likely to occur along the Highway 12 corridor east of Kalispell with a couple of inches during Tuesday. Clearing will take place Tuesday night in response to building high pressure and dry air moving over the area and will favor excellent radiational cooling with temperatures in some locations dipping into the single digits above and below zero. But the cold morning with patchy fog will be followed by an especially pleasant spring afternoon with temperatures reaching or eclipsing seasonal norms! This will prove short lived as yet another trough of low pressure out over the Pacific Ocean will begin to spread increasing clouds over the Northern Rockies.
210 PM MST Mon Mar 5 2018 Temperatures will steadily warm through the week as high pressure builds across the region. Strong ridging aloft is expected to build northward into he western CONUS as a deep long-wave upper trof digs southward into the central/eastern parts of the CONUS. The only restraint to our temperatures will be considerable mid and high cloudiness that is expected to be pushed into the region from a deep trofing over the eastern Pacific.
Temperatures will steadily warm through the week as high pressure builds across the region. Correspondingly, a large upper low will become quasi-stationary through the east Pacific helping tap copious amounts of high subtropical moisture around the trough base. By the middle of the week, the pattern will unlock to a degree lifting the east Pacific trough into the Pacific Northwest and dampening the SW Conus ridge.
The precipitation could end as a brief period of freezing drizzle late tonight.
Recent water vapor imagery showing strong upper trough emerging into the Plains with lots of dry aloft air over Kansas. Cold front was moving into central Kansas at 08Z with some sustained winds and gusts to Advisory levels behind it and very weak convection along it. Initial strong winds behind the front could reach Advisory levels as seen in upstream obs, but concern for strong winds persists into the late afternoon as the upper trough deepens over eastern Nebraska and subsidence occurs as winds become unidirectional. As the upper low continues to drop southeastward into the Ohio valley with a westward extension of the trof moving over the state on Tuesday, the tight surface gradient and depth of wind in the column continue to make winds and fire danger the primary concerns.
High temperatures are still expected to reach the lower-mid 70s across most of our area, with upper 60s in our far northeastern areas where clouds could linger this afternoon.
Front pushes of the coast during the morning with cool high pressure building into the area throughout the day Tuesday. Temperatures are expected to stay mainly in the lower to mid 60s much of the day then cool into the 40s overnight.
1244 PM EST Mon Mar 5 2018 High pressure will provide one more day of sunshine then the weather gets active the remainder of the week. High pressure is expected to slide E of the region tonight. Low pressure is progged to advance slowly out of the Midwest late tonight and Tuesday, with an associated occluded front progged to cross the OH Valley region.
114 PM EST Mon Mar 5 2018 A ridge will be along the East Coast today promoting dry weather.
300 PM CST Mon Mar 5 2018 Satellite imagery and surface obs have shown a low pressure system moving N/NW into the northern Plains states today. The showers that moved through the area this morning occurred along the warm front associated with this system. We start Tuesday with the cold front just to the east of the area. The airmass behind this front is rather dry and with good mixing and clear skies tomorrow think that temps may actually end up warmer Tuesday than today. Highs in the low to mid 60s are possible for much of the area. The upper level system that was situated over the northern US begins to drop S/SE through the day Tuesday and will push a secondary cold front into the area late Tuesday evening.
118 PM EST Mon Mar 5 2018 High pressure will build southward from Labrador and dominate area weather through Tuesday.