Aikyam-Lab/Synoptic-Bench huggingface dataset:
High pressure will continue to move eastward. Temperatures rebound today up into the lower 80s over a good portion of the area.
628 AM EST Sun Feb 19 2017 High pressure building into the area will provide fair weather today. There will be some morning clouds and fog over southern portions of the area, but sunny skies and unseasonably warm temperatures should return this afternoon with highs generally in the lower 60s, except only in the 50s near Lake Michigan. The fair weather and unseasonably warm temperatures will continue tonight and Monday as the high moves off to the east.
646 AM EST Sun Feb 19 2017 High pressure will build into the region today before sliding east of the Ohio Valley on Monday.
405 AM MST Sun Feb 19 2017 Upper level low has lifted into Central Arizona early this morning and will continue drifting northeast this morning into the Four Corners Region where best pressure falls continue. The low will continue to travel northeast in central Colorado by this afternoon as it fills and phases with northern stream energy. Overall warm nature to this system will limit most significant impacts to the nocturnal hours, when temps will be the lowest, allowing slush, ice and snow packed conditions to develop on the higher mountain highways. An upper level ridge axis over the area will be dampened and suppressed southward Monday night as the next upper level trough approaches the West Coast.
Once fog and low clouds dissipate, we should warm up quickly today as an anomalous mid/upper level ridge builds over the region.
528 AM CST Sun Feb 19 2017 A strengthening area of low pressure west of the region will bring breezy southerly winds and warm temperatures into the area today. While highs on Monday will be cooler, they will still range several degrees above normal.
606 AM EST Sun Feb 19 2017 High pressure will build in behind exiting low through today. This high extending down the east coast from Canada will shift farther off the coast through mid week.
325 AM MST Sun Feb 19 2017 Current surface analysis shows low pressure over north central MT, with warm front extending east-southeast across eastern MT into northern SD. Upper level analysis shows a ridge over eastern portions of the plains and into the MS river valley, with trough off the pacific NW coast and a cutoff low over the southwest US. Cloud cover and warmer air in place is keeping temps on the mild side, mostly upper 30s to lower 50s. Temps look warm enough for rainfall across much of the area, with a mix possible across the higher Black Hills later tonight before showers exit. Cooler air will filter in, but temps will continue to be well above average, highs in the 50s and lower 60s.
934 AM EST Sun Feb 19 2017 High pressure will build into the region today before sliding east of the Ohio Valley on Monday.
This upper trough will move toward the southern Plains this afternoon, providing the forcing for showers and thunderstorms across Oklahoma and Texas by tonight. Temperatures today should be a few degrees warmer than yesterday as winds become more southerly and lose some of the upslope component.
It looks like another early morning with unseasonably mild overnight minimum temperatures remaining near or above freezing across most of the area. Light and variable winds across central and north central Minnesota have allowed for some patchy fog or freezing fog in places. All of this in response to the approach of a low pressure system which is just beginning to develop off the front range of the rockies. A warm frontal cloud band of mainly mid to upper level clouds should thicken in over the area through midday. The approaching low pressure system and overall increasing warm and moist advection today should produce increasing lower clouds this evening. expect low pressure to dig into the central Dakotas.
706 AM EST Sun Feb 19 2017 A weak cold front will approach from the north today and will drop south through the region tonight. High pressure will build in from the northwest Monday and will crest over the area Monday night.
926 AM EST Sun Feb 19 2017 A weak cold front will approach from the north today and will drop south through the region tonight. High pressure will build in from the northwest Monday and will crest over the area Monday night.
Weak frontal trough responsible for morning shower activity slowly sliding east and south during the day with gradually improving conditions into the afternoon from north to south. The associated upper trough along the eastern seaboard will move eastward into the western Atlc during the day and further away from the region into tonight. Tail end of pseudo surface trof across the central peninsula forecast to slip east and south through the day. ISOLD-SCT shower activity to come to an end from the north to south as high pressure builds into the area from the north.
Dense Fog This Morning Over the Nature Coast and West Upper low spinning over the Carolinas this morning with last vort max producing light showers as it wraps over the area through this morning. Upper low to exit into the W Atlantic this afternoon with upper ridging quickly building from the N Carib through the region tonight through Monday. Weak Western Atlantic high pressure axis over S FL keeping light winds and abundant low level moisture in place to produce significant low clouds and widespread dense fog.
Also adjusted POPS/Weather based on the latest HRRR/RAP13/NAMNest which advertises isolated to scattered showers in the James River Valley, and light freezing rain north central in the morning. Main concern for this morning is light freezing rain developing across the north central. Blended previous forecast highs with the warmer MAV guidance for today. A cold front associated with it will shift through western and central North Dakota, with increasing chances for precipitation (mainly rain toward 06z and onward). However, light freezing rain is again a possibility across the north central tonight into Monday morning.
Yesterday's disturbance still slowly pushing off to the east as high pressure begins to build in from the west. Chattanooga Airport, TN 69 45 72 52 / 10 0 0 0 Knoxville McGhee Tyson Airport, TN 66 42 71 50 / 10 0 0 0 Oak Ridge, TN 68 42 71 50 / 10 0 0 0 Tri Cities Airport, TN 63 39 69 46 / 20 0 0 0.
However, abundant high clouds may result in breaks in the low clouds.
A weak trough extending from this low will move south over Florida today and reaching the Keys later this evening.
Expecting a pleasant day with highs in the low 70s north, near 80 south. Winds will diminish through the afternoon and evening as high pressure builds into the region from the north. High pressure will build to the northeast of the region on Monday through the end of week with winds 15 knots or less.
The first disturbance continues to move through western Montana early this morning with a few showers lingering behind the cold front in north central Idaho. This feature did put down a couple of inches of new snow in the higher terrain, but impacts to area roads appear to be minimal.
Mid-level troughing over AZ/NM moves towards the northeast while a secondary area of troughing develops just to the west of the region late tonight. This will be the main player for us as it sends a trough and ensuing cold front towards the region late tonight. The troughing slowly be moving towards the region by daybreak Monday so while we expect a great reduction in activity, we will still have enough moisture and dynamics around to keep at least some showery activity through the remainder of Monday afternoon/mainly over the east.
The ridge axis should be situated over our far eastern counties by 12Z this morning, and nearly out of the forecast area by 15Z. An upper-level trough will translate northeast across the Intermountain West states, into the region. An intensifying upper-level jet streak will support upper-level divergence, along with an associated mid-level trough and sfc cold front.
An elongated upper level trough will press east across the eastern Great Basin today.
Unsettled weather returns to the area as early as this afternoon as a broad upper trough slowly moves east toward the California coastline. The high res ARW and NMM as well as the HRRR are all in agreement that precipitation will spread east into western Merced and Fresno counties by 00z Monday and quickly spread east through the entire area by 06z to 09z Monday.
622 AM EST Sun Feb 19 2017 A weak cold front will approach from the north today and will drop south through the region tonight. High pressure will build in from the northwest Monday and will crest over the area Monday night.
1004 AM EST Sun Feb 19 2017 Weak high pressure will slowly build across the area through Monday, shifting offshore mid week.
Upper low has pulled east of the area with a few lingering light showers on the plateau. Upper ridging will quickly build in during the daylight hours today allowing temperatures to climb into the mid 60s to lower 70s. The first will be an upper low along the gulf coast.
551 AM CST Sun Feb 19 2017 Early morning objective surface analysis indicated the ridge axis now extended over the mid and upper Mississippi River Valley with a lee trough developing from eastern CO into WY.
Expect scattered showers through sunrise as the next upper level trough approaches the coast. Satellite showing the next upper level trough along the Oregon coast at 09z already producing widespread showers and scattered thunderstorms across Western Oregon. The trough will move northeast across Oregon this afternoon placing favorable dynamics, steep lapse rates and 100-200 J/KG of CAPE over the forecast area.
905 AM EST Sun Feb 19 2017 A weak cold front will cross the area today.
755 PM EDT MON OCT 3 2016 High pressure will be over the area into tuesday then shift into new england the rest of the work week.
1136 PM EDT Mon Oct 3 2016 A weakening upper low over New Jersey will push off the coast later tonight. A ridge of high pressure will build east into Pennsylvania behind this system, and will likely remain over the area through the end of the work week, bringing mainly dry and slightly milder conditions across Central Pennsylvania. Lows will drop back into the upper 40s across the Allegheny Plateau, to the low 50s over the Susq Valley. Upper ridging is forecast to build over the eastern United State through the weekend. This will support high pressure at the surface, providing the state with a stretch of fair and warmer weather for much of the work week.
844 PM EDT Mon Oct 3 2016 A weakening upper low over Northeast Pa will push east of the area later tonight. A ridge of high pressure will build east into Pennsylvania behind this system, and will likely remain over the area through the end of the work week, bringing mainly dry and slightly milder conditions across Central Pennsylvania. Lows will drop back into the upper 40s across the Allegheny Plateau, to the low 50s over the Susq Valley. Upper ridging is forecast to build over the eastern United State through the weekend. This will support high pressure at the surface, providing the state with a stretch of fair and warmer weather for much of the work week.
The alto cu is being lifted in the presence of an upper trough situated along the spine of the Appalachians.
1008 PM EDT Mon Oct 3 2016 The upper low will continue to move away from the region tonight and high pressure will allow for dry conditions through Tuesday night.
1008 PM EDT MON OCT 3 2016 High pressure will be over the area into tuesday then shift into new england the rest of the work week.
917 PM MDT Mon Oct 3 2016 Cold front has pushed its way through the forecast area with gusty northwest winds continuing. Gusts at the high elevations are above 50 mph with temperatures around 20 degrees above 12000 feet. The upper low was located over central WY this aftn with a strong southwesterly flow aloft over the cwa. A cold front associated with this system is making its way south and east across the urban corridor and northeast plains and should move through the Denver area around 22-23Z time frame. In the high country. Mid and upper level mdt QG descent tonight behind the trough. The flow aloft will transition from southwesterly this evening to west/northwesterly late tonight and Tuesday with an upper level ridge allowing for dry and stable conditions for most of the area.
/issued 316 PM CDT Mon Oct 3 2016/ Weak upper level ridging will remain over the Mid South into mid week.
/issued 406 PM CDT MON OCT 3 2016/ (Tonight and Tuesday) A large upper trough over the western CONUS this afternoon will deepen as it expands eastward over the Plains states through tomorrow. As the forecast area comes under the influence of the upper trough, our flow aloft will transition into a southwest flow aloft. As the upper trough moves eastward it will push a cold front/dryline out of southeastern New Mexico early tomorrow to a position along the western CWA by tomorrow evening. Concomitantly, low to mid-layer moisture will increase over the CWA ahead of the cold front/dryline.
A low pressure system offshore will move over the British Columbia coast late Tuesday.
747 PM EDT Mon Oct 3 2016 The upper low that has been bringing the rain and clouds to the area will move into New England tonight. Tuesday will bring clearing skies as high pressure moves into the area behind the low. Showers are all but gone at this time, as the cold core upper low fills/moves to our southeast, and the boundary layer stabilizes diurnally. and the cold pool aloft under the low enhancing the instability. Nothing much to discuss this period with high pressure building over New England and the Mid-Atlantic. Attention during this period turns to resolving the behavior between a cold front moving in from the Great Lakes and Hurricane Matthew in the Western Atlantic.
837 PM EDT Mon Oct 3 2016 Moist onshore flow will continue Tonight as high pressure builds to the North.
Will remove the slight chance pops on the higher terrain over Northeast Tennessee. Chattanooga Airport, TN 59 84 60 86 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 58 82 58 83 / 0 10 0 0 Oak Ridge, TN 57 82 58 83 / 0 0 0 0 Tri Cities Airport, TN 55 76 53 81 / 0 10 0 0.
Upper ridging will begin to break down through the day as a broad upper northern CONUS trough travels east, but geo-heights should remain high enough to suppress any significant convective coverage. Despite more afternoon cloud cover, interior temperatures should be in the low to mid 80s by Noon with slightly above normal Tmax upper 80s expected Tuesday afternoon. Upper ridge aloft also tends to flatten out some tomorrow.
/issued 631 PM CDT Mon Oct 3 2016/ Weak upper level ridging will remain over the Mid South into mid week.
18Z surface data has high pressure from the Great Lakes to the Gulf Coast while a storm system was organizing in the Rockies. Dew points were in the 50s from the Great Lakes and Plain with 60s in the lower Mississippi Valley. However, it does appear that Tuesday will be warmer.
950 PM MDT Mon Oct 3 2016 Cold front has pushed its way through the forecast area with gusty northwest winds continuing. Gusts at the high elevations are above 50 mph with temperatures around 20 degrees above 12000 feet. The upper low was located over central WY this aftn with a strong southwesterly flow aloft over the cwa. A cold front associated with this system is making its way south and east across the urban corridor and northeast plains and should move through the Denver area around 22-23Z time frame. In the high country. Mid and upper level mdt QG descent tonight behind the trough. The flow aloft will transition from southwesterly this evening to west/northwesterly late tonight and Tuesday with an upper level ridge allowing for dry and stable conditions for most of the area.
A mid level trof passing across the area overnight does favor a few tstms with latest high resolution models suggesting the area from around PEQ/FST. /issued 139 PM CDT MON OCT 3 2016/ Have an upper trough over the Great Basin this morning with a weak upper ridge over NM and TX. As this trough lifts NE it will displace the upper ridge and bring a chance of storms to the region tonight.
1114 PM EDT Mon Oct 3 2016 High pressure will remain across the region through the end of the week. High pressure will build south across the region overnight. High pressure will bring favorable radiational cooling conditions. Overnight low temperatures will generally range from the upper 20s to lower 30s north, with lower to mid 30s in the advisory area, mid to upper 30s interior Downeast and around 40 to the lower 40s along the Downeast coast. Tuesday will feature plenty of sunshine with highs near 60 across the area as high pressure on the surface and ridging aloft builds across the region.
The narrow band of light rain that has been sitting over the lower ID panhandle and SE WA is finally beginning to break apart as the low departs and the next system approaches from the west. Consequently, temperatures should be a bit warmer with fog setting in as temperatures dip into the mid to upper 30s. /sb 00Z TAFS: Midlevel clouds assoc with low pressure in Idaho will diminish 00-03z.
1137 PM CDT MON OCT 3 2016 A vigorous mid/upper trough over the Central Great Basin area is progged to lift northeast into the Northern Plains later today and into Tuesday. A trailing cold front will become a focus for severe thunderstorms across the area on Tuesday afternoon and Tuesday evening. The higher probabilities are expected to remain across central KS where a few strong storms with nickel sized hail will be possible during the predawn hours.
Slightly warmer temperatures for early October will remain across the region this evening and into Tuesday as a result of winds shifting towards the south. Overnight lows will only fall into the lower 60s tonight as as result of the southerly winds.
732 PM EDT Mon Oct 3 2016 High pressure will gradually build atop the region this week.
Upper ridging will begin to break down through the day as a broad upper northern CONUS trough travels east, but geo-heights should remain high enough to suppress any significant convective coverage. Despite more afternoon cloud cover, interior temperatures should be in the low to mid 80s by Noon with slightly above normal Tmax upper 80s expected Tuesday afternoon.
647 PM CDT MON OCT 3 2016 Weak upper level ridging continues to dominate much of the Midwest with an upper low spinning over the Rockies. Southeasterly winds should remain up a bit overnight, ushering in warmer air and moisture. The area that may see the exception is along and south of I-70 where the winds are lighter closer to the ridge axis. Tomorrow is a similar day, with max temps a few degrees warmer, and the cu field developing before mid day. A longwave trough developing over the western half of the U. This feature looks to primarily affect northwestern Illinois and have the highest chance of precipitation (30-40 percent) from near I-55 northwestward.
726 PM EDT MON OCT 3 2016 High pressure will be over the area into tuesday then shift into new england the rest of the work week.
1037 PM EDT Mon Oct 3 2016 High pressure will gradually build atop the region this week.
732 PM EDT Mon Oct 3 2016 The upper low will continue to move away from the region tonight and high pressure will allow for dry conditions through Tuesday night.
739 PM EDT Mon Oct 3 2016 A weakening upper low over Northeast Pa will push east of the area later tonight. A ridge of high pressure will build east into Pennsylvania behind this system, and will likely remain over the area through the end of the work week, bringing mainly dry and slightly milder conditions across Central Pennsylvania. Lows will drop back into the upper 40s across the Allegheny Plateau, to the low 50s over the Susq Valley. Upper ridging is forecast to build over the eastern United State through the weekend. This will support high pressure at the surface, providing the state with a stretch of fair and warmer weather for much of the work week.
1026 PM EDT Mon Oct 3 2016 A weakening upper low over New Jersey will push off the coast later tonight. A ridge of high pressure will build east into Pennsylvania behind this system, and will likely remain over the area through the end of the work week, bringing mainly dry and slightly milder conditions across Central Pennsylvania. Lows will drop back into the upper 40s across the Allegheny Plateau, to the low 50s over the Susq Valley. Upper ridging is forecast to build over the eastern United State through the weekend. This will support high pressure at the surface, providing the state with a stretch of fair and warmer weather for much of the work week.
652 PM CDT MON OCT 3 2016 A vigorous mid/upper trough over the Central Great Basin area is progged to lift northeast into the Northern Plains later today and into Tuesday. A trailing cold front will become a focus for severe thunderstorms across the area on Tuesday afternoon and Tuesday evening. The higher probabilities are expected to remain across central KS where a few strong storms with nickel sized hail will be possible during the predawn hours.
Water vapor imagery shows strong negatively tilted upper low/trough across the cntrl to nrn Rockies with diffluent flow across the CWA. low pressure sits across se MT into ne WY with deep srly flow mainly across the wrn SD plains. Storm activity will slide eastward a weak cold front pushes in from the east associated with the dryline as the upper low continues to the NE. Cooler and drier weather is expected Tuesday as the upper low nearly stalls across se MT. A secondary cold front will cross the CWA during the day tomorrow bringing gusty W/NW winds and highs in the 50s across ne WY/nw SD/BH.
Tonight the upper-level trough axis will push east of the area as low-level ridging moves eastward into New England and southward down the eastern side of the Appalachians. With the southeasterly flow lows will remain in the low 60s southeast while falling into the upper 50s northwest. The high pressure system in New England will aid in this, but also produce an easterly to northeasterly wind field and drive high temps back down to low 80s. It's only effect will be cutting off the return moisture from the cold front that will enter the forecast area this weekend. This high will funnel the winds down the Appalachians and gain a more east and southeast component the next 12 hours.
Notable upper jet streak has rounded the base of the upper level low and is punching newd through the northern plains. Scattered/Numerous showers and thunderstorms should continue to move/develop north-northeast across the region overnight in plentiful low/mid-level waa-forced regime out ahead of this upper low churning into southeast montana. Windy conditions, along with thunderstorms along the nearing cold front will continue to be the main concerns through the early evening hours.
/issued 330 PM CDT MON OCT 3 2016/ Mid-afternoon sfc analysis shows high pressure centered over the Ohio Valley with a mostly erly low-level flow prevailing. Water vapor imagery indicates ridging in place from the Rio Grande Valley across the Arklatex to the cntl Plains. Regional 88Ds continue to show any convection over the nwrn Gulf in proximity to a sfc trof offshore. the associated rise in dewpoints will lead to warmer nighttime mins tonight with readings generally 3-5 degrees warmer than this morning. The storm system crossing the Rockies today will continue breaking down the cntl CONUS ridge. and the lowering heights aloft combined with the increasing moisture will allow for some convection to begin developing.
A cold upper low will slowly exit northern Utah and southwest Wyoming overnight.