Aikyam-Lab/Synoptic-Bench huggingface dataset:
141 AM EDT SAT JUL 2 2016 as expansive high pressure over the Upper Mississippi Valley will gradually build across the Ohio Valley. the cold front will exit the region while expansive high pressure over the Upper Mississippi Valley will gradually make its way across the mid Western states. the large area of high pressure centered over the Mid Western states will expand across the Lower Great Lakes. A slow moving 500mb low over Quebec and ridging over the Northern Plains states will yield a confluent flow over the Lower Great Lakes region through the remainder of the extended Independence Day Holiday weekend. While temperatures will average near normal Sunday, slight warming aloft will lead to highs on Independence Day mainly in the low to mid 80s.
104 AM EDT SAT JUL 2 2016 A warm front will lift across the region tonight followed by a cold front on Saturday.
A weakening cold front is moving through central and north central Oregon bringing scattered showers to central Oregon and the Lower Columbia Basin of Oregon and Washington and numerous showers to north central Oregon. Brief wind gusts to around 45 mph are possible in the heavier showers ahead of the cold front until around 2-3 AM. Broken to overcast cloud bases 4000-7000 feet AGL will slowly improve by late overnight as weak cold front moves through and clears the area.
657 AM EDT Tue Oct 25 2016 Drier air is starting down across the higher terrain with the dewpoint at Black Mountain now down to 28 and falling quickly now.
Temperatures were slightly cooler than expected, but still warmer than the past few nights.
308 AM CDT Tue Oct 25 2016 Surface to mid-level ridge of high pressure over the region early this morning with increasing mid/high level clouds streaming in per IR satellite imagery. This mid/high level cloud was in response to increasing 850-700mb isentropic lift/moisture transport ahead of low pressure moving out of the Northern Rockies. A dry lower level airmass will be in place as the ridge of high pressure shifts slowly east, so a lot of this lift will go into cloud production with perhaps a few showers mainly west of the Mississippi River.
150 AM EDT Tue Oct 25 2016 A dry cold front will sweep south across the area tonight.
300 AM EDT Tue Oct 25 2016 A dry cold front has pushed through and will be followed by high pressure through mid week.
223 AM CDT TUE OCT 25 2016 An upper level short wave trough over western Arizona early this morning will track quickly northeastward today and eject onto the central plains this evening. Abundant upper level cloud cover and decreasing thicknesses point to cooler temperatures today compared to yesterday with MOS values looking reasonable given the magnitude of the progged thickness decrease. The cooler temperatures and cloud cover will not help in that regard.
Weakening cold front has stalled out across the northern third of California with showers continuing from the Bay Area up through the Sacramento region into the northern Sierra. As the next system develops off the coast, the weakened cold front will lift back to the north today and be absorbed as a warm front resulting in generally lighter amounts of precipitation by this afternoon.
351 AM CDT Tue Oct 25 2016 Quiet conditions remain in place across the region early this morning, with upper air data showing low amplitude ridging continuing to the be the primary feature. At the surface, southeasterly winds are in place, set up between high pressure over the Great Lakes/Midwest and low pressure through the lee side of the Rockies. This will be a warm and dry period predominately dominated by an upper level ridge. Low temperatures are also likely to remain warm and despite begin late October should be well above freezing.
428 AM CDT Tue Oct 25 2016 Water vapor imagery reveals upper ridge setting up over the middle of the country with broad troughing exiting the east coast. At the surface, a weak frontal boundary will continue to shift way from our region over the SECONUS as its effects will not be felt for us due to the encroaching ridge which has shunted the front eastward. Any fog will quickly diminish by mid morning as south to southeast winds kick in and temperatures quickly climb into the afternoon, eventually topping out in the lower 80s at most areas.
349 AM CDT TUE OCT 25 2016 (Today and Tonight) Currently, we have ridging in place across west central Texas aloft.
154 AM EDT Tue Oct 25 2016 A cold front will move through the forecast area tonight with a reinforcing shot of cool air through Midweek. The cold front was pushing into the central Midlands at midnight and will move south of the CSRA around 200 am. A broad upper ridge will build over the Southeast. High pressure will ridge into the forecast area from the north at the surface. Slightly below normal high temperatures are forecast, in the lower to middle 70s. An upper-ridge over the center of the country will promote northwesterly flow aloft over the southeastern states through midweek.
645 AM EDT Tue Oct 25 2016 A dry cold front has pushed through and will be followed by high pressure through mid week.
While a Pacific storm system rages west of Vancouver Island today, Northeast Montana remains under a southwest flow aloft due to a large ridge over the Central Plains.
309 AM CDT Tue Oct 25 2016 Rinse and repeat, right? It's very quiet across Middle Tennessee this morning, with clear skies and temperatures a little cooler behind yesterday's "frontal" passage. High pressure will settle into the region today, allowing for continued clear skies and afternoon highs slightly warmer than yesterday.
Weak frontal trough pushing south off the Carolina/Georgia coast will weaken the high pressure ridge across north Florida. High temperatures will be close to seasonable in the lower 80s. Increasing onshore flow will keep temperatures milder than previous nights especially near the coast with lows holding in the lower 70s there, lower 60s far interior.
Aloft, ridge axis lies well west of the area over the Great Plains resulting in a continued dry deep layer northwesterly flow over our area. The cooler/drier air associated with the front over Georgia will keep daytime highs a bit lower than we have seen the past few days.
Weak cold front then moves into northwest parts of the area toward the end of the forecast. Have retained slgt chc pops across the eastern OK Panhandle and extreme northeast Texas Panhandle Tuesday evening as there may be just enough lift in close proximity of sfc trof to cause an isold tstm or two to form in that area before heading into OK and KS. Otherwise, no pops through next Monday as an upper level ridge of high pressure will generally dominate the weather across our fcst area. There will be a couple dry cold frontal passages durg this 7 day period.
344 AM EDT Tue Oct 25 2016 A dry cold front will cross the area early this morning giving way to a slightly cooler airmass. Highs temps around 70 across the higher elevations to the low 80s south of Columbus. Easterly winds may become gusty as the front pushes further south with high pressure building in from the NE.
108 AM EDT Tue Oct 25 2016 As of 1AM: Forecast looks on track with many locations decoupled ahead of the dry cold front progged to move through overnight. the short term remains quiet and relatively benign as strong ridging dominates the region. While resultant temps look cooler than today. given the dry antecedent conditions have gone slightly warmer than model blend for highs and cooler for lows to widen the diurnal spectrum and radiational contribution. While the warmer overnight lows may be east central GA Tuesday AM.
126 AM EDT Tue Oct 25 2016 Occasional lake effect showers will taper off tonight as high pressure moves into Pennsylvania.
Kept the blend high temperatures but possible that it could end up being a little cooler in the east than what is in there.
A weak cold front is draped across the area from west to east just south of the AL/TN border. These winds will help to advect some drier and slightly cooler air into the region. With clear skies forecast tonight, expecting slightly better radiational cooling and nudged temps down a degree or two in the cooler locations of the area. Lows overnight will be in the low to mid 40s with a few locations in our TN counties dipping below the 40 degree mark. We will go closer to the warmer NAM values in the l-m80s. So going with lows slightly above guidance in the west, but going a bit cooler than guidance in our typical drainage cooling valleys in our east.
Strong high pressure will bring a drying trend the remainder of the week along with above normal temperatures for late October.
252 AM MST TUE OCT 25 2016 High pressure and drying conditions will move in behind an exiting low pressure system today.
Mid and high clouds remain during the afternoon with afternoon temperatures in the low 70s northeast to mid/upper 70s elsewhere. For tonight clouds slowly decrease from west to east as upper level ridging builds to our west and trough that moved through today exits the area. Low temperatures in the low 40s to low 50s (west to east).
349 AM PDT Tue Oct 25 2016 A series of low pressure systems will lift north along the Pacific Coast over the next several days. The low will meander around in the same general vicinity today, while slowly weakening. Scattered showers will linger across the area today as the low remains well west. The low will steadily weaken and lift Northwest providing and drier day on Tuesday.
further to the south temps are hovering in the lower 50s. High pressure extends from the Great Lakes down into the southern states and as far west as Texas.
Within breaks of the cooler cloud tops, lower level stratocumulus is moving west southwest through the Straits of Florida.
This time frame will also be the window for when thunder may be heard, primarily over southern Minnesota closer to the low.
High clouds will increase overnight as some upper level moisture moves across the region around the edge of 500mb ridge that is beginning to strengthen over Baja Mexico. The 00z BRO sounding shows plenty of dry air at the lower and mid levels of the atms which is resulting in VFR conditions this evening for all three RGV airports. A fairly dry and stable 500 mb ridge will persist over the region over the next 24 hours which will maintain VFR conditions. The ridge aloft continues to keep drier air in place generally from about 6000 feet upwards, which is capping off any significant vertical development to the CU field trapped underneath.
645 AM EDT Tue Oct 25 2016 A dry cold front will cross the area early this morning giving way to a slightly cooler airmass. Highs temps around 70 across the higher elevations to the low 80s south of Columbus. Easterly winds may become gusty as the front pushes further south with high pressure building in from the NE.
An upper level trough just off the Atlantic seaboard will continue to move east with upper ridging building in from the west. At the surface, a wedge of high pressure will begin to nose down from the mid-Atlantic region bringing a slight increase in easterly flow along with some increase in low level moisture. While high temperatures are forecast to reach the mid 80s, apparent temperatures will feel a few degrees cooler due to the dry airmass in place.
326 AM CDT Tue Oct 25 2016 Upper pattern has ridge axis extending from Mexico. An upper trough will move across the northern tier of states tonight but stay well north of here. The ridge will flatten out across the country as the center of it shifts west the next couple of days but the pattern will remain warm.
324 AM MDT Tue Oct 25 2016 Upper ridge axis is now crossing the nrn Plains with SW flow aloft moving in. Surface analysis shows a trough across ern MT into wrn SD with southerly winds across cntrl SD and westerly becoming northwesterly winds across ne WY. Highs will reach the low 60s to mid 70s with the warmest spots across sw to scntrl SD.
225 AM PDT Tue Oct 25 2016 Fair and warmer weather is expected as we have a few days of higher pressure.
/issued 716 PM EDT Mon Oct 24 2016/ High pressure surface and aloft.
144 AM EDT Tue Oct 25 2016 High pressure will keep dry weather over the region tonight through Tuesday night.
Main issue is scattered storm potential as a weak front/trough moves through the area tonight into Tuesday.
447 PM PDT Mon Aug 15 2016 High pressure will result in warm and dry weather through the upcoming weekend.
1120 PM EDT Mon Aug 15 2016 High pressure centered over the western Atlantic will remain nearly stationary through Tuesday. This front will eventually get kicked farther south and east by an upper level trough of low pressure which will move across the northern tier states later in the week. After midnight the models are keeping most of the area dry with partly cloudy skies mainly of the high cloud variety.
Little change is expected through the next 24 hours as a result of weak ridging aloft and at the surface. /issued 335 PM CDT MON AUG 15 2016/ Isolated storms may linger across north/west Oklahoma near the mid-level cyclone center. And so it continues for a few days with the best moisture axis in the southeast part of the area or just to the southeast along with a persistent weakness in the mid-level ridging that tries to develop across the Plains.
610 PM CDT MON AUG 15 2016 For this evening, we will have to carefully watch a weakening short wave trough moving through the region. On Tuesday morning, the area will be located under short wave ridging on the western side of the low pressure area moving through the lower Great Lakes and another trough moving out of the Northern Plains. This ridge will keep much of the area dry during this time period. On Tuesday afternoon, the short wave trough over Minnesota and western Iowa will approach the region.
Winds are from the south- southeast in the low levels, from the northeast in the mid-levels and from the northeast or east in the upper levels. The weather pattern will be a fairly typical summer regime with a low to mid level ridge to the east that will extend near the north Gulf coast with mostly southerly winds from the Gulf of Mexico pumping in moisture.
Will continue chance for -shra across far southeast CWA rest of the night as low-mid level deformation associated with low pressure passing by the southeast grazes southern WI. Also this area has best chance of seeing some late night clearing as mid-level low pressure pulls away from the region. MVFR and IFR conditions are possible overnight over southeast WI, especially at the ENW TAF site, as low pressure moves northeast across Illinois.
Low pressure system in central IL was spreading rain across central IL and eastward into the OH valley. An upper level trough will be approaching from the west so will continue with chance pops in the afternoon. Maximum temperatures will be in the lower to mid 80s.
Weak eastern Pacific upper low 41/132 expected to move inland along 40N Tuesday with a slight chance of afternoon/evening thunderstorms in our southern zones.
1012 PM MDT MON AUG 15 2016 The area of high pressure that was situated over the forecast area this weekend will continue to weaken this afternoon as a mid-level trough approaches from the west. This will allow for isolated to scattered showers and thunderstorms beginning tomorrow afternoon once daytime heating kicks in, generally over the higher valleys and mountain areas.
/issued 335 PM CDT MON AUG 15 2016/ Isolated storms may linger across north/west Oklahoma near the mid-level cyclone center. And so it continues for a few days with the best moisture axis in the southeast part of the area or just to the southeast along with a persistent weakness in the mid-level ridging that tries to develop across the Plains.
Activity should diminish after sunset, with perhaps the highest chances in the northwest based on the activity currently in the southwest. Lows will be in the low 70s. Will maintain only 30 POPs for Tuesday with the western side of an elongated Bermuda Ridge over the forecast area.
1025 PM EDT MON AUG 15 2016 Weak high pressure will build over the area overnight and Tuesday.
High pressure will bring hotter temperatures and fewer thunderstorms early this week. As high pressure shifts off to the east, deeper moisture will return along with an increasing chance of thunderstorms the second half of the week.
715 PM EDT Mon Aug 15 2016 High pressure centered over the western Atlantic will remain nearly stationary through Tuesday. This front will eventually get kicked farther south and east by an upper level trough of low pressure which will move across the northern tier states later in the week. Radar showed isolated to scattered thunderstorms with the better coverage west of the Blue Ridge. Freezing level between 13500 and 15000 feet and precipitable water values from 1.
While previous weak convection from last evening has fallen apart as it rode up the Ohio Valley, additional convection that developed to the west of the ridgeline in West Virginia has managed to hold together as it advances up the ridgelines into SW PA. Fries Southerly flow in advance of the approaching trough and associated cold front should support the development of thunderstorms out ahead of the boundary on Tuesday but the best lift will reside with the trough as it lifts into NY/NE. Regardless, modest instability and 30kts of shear will once again bring the threat for strong to severe storms, especially in close proximity to the boundary and upper trough passage. Weak high pressure will begin to build at the surface as the front slowly shift south and east.
A 1012 mb low pressure system was located just north of St Louis with a stalled front from Southeast Missouri into Western Arkansas. The upper trof over Eastern Kansas and Oklahoma will gradually shift east and weaken overnight. The heavy rain threat will be diminishing however as the low level moisture transport into the area starts to weaken and the overall lift across the region diminishes as the upper trof weakens. Lows will be in the lower 70s.
The next wave embedded in the larger trof moves through Nebraska in the overnight hours with most models keeping rainfall north of the border. Open mid level trough dips south and east towards the midwest late Tuesday evening.
High temperatures should nudge a little warmer than today, but could be dampened a bit in the east if morning convection/clouds persist longer.
GFS/ECMWF/GFS ensemble mean depict a coastal trough overnight/early Tuesday which may contribute to heavy rainfall over the coastal counties which may also exceed FFG values.
Expect additional development along the coast, but more likely after midnight with development of coastal trough overnight. GFS/ECMWF/GFS ensemble mean depict a coastal trough overnight/early Tuesday which may contribute to heavy rainfall over the coastal counties which may also exceed FFG values.
So far this afternoon the activity has been anchored to the terrain, however the high resolution guidance is continuing to show a few storms being able to move off the terrain and move on to the plains.
1049 PM EDT MON AUG 15 2016 Humidity will increase overnight and Tuesday as a warm front lifts gradually north through the region. The highest risk for scattered severe storms and localized flooding is on Tuesday and Tuesday Night as a weak cold front will move down from the north. This may generate another round of showers/storms later tonight moving sw-ne along with or over the warm front. The warm front should be up to the northern part of the CWA by morning - but may be dragging along in the eastern section. Temps will get back into the lower 90s in some of the southern valleys. Cold front doesn't push in until after the day.
440 PM PDT MON AUG 15 2016 High pressure over the west will keep warm and dry conditions in place through most of the week. Expect slightly lower, but still warmer than average, temperatures. We expect warmer than average temperatures to continue over the central California interior as high pressure persists along the U.
836 PM EDT MON AUG 15 2016 Evening XMR sounding continues to show fairly laminar easterly flow from the surface through 30000 feet as surface and upper ridging remains centered across the western Atlantic into SC/GA.
The ridge of high pressure upstream now over the Pacific Northwest states will translate eastward between now and mid-week.
As the h5 trough deepens, the boundary pushes southeast and some of these showers and thunderstorms should linger into Tuesday morning.
In the middle and upper levels (700-200 mb), Latest IR imagery overlaid with model streamline analysis as of 900 pm depict the next (TUTT) Tropical Upper Tropospheric Trough cell is located over the Turks and Caicos Islands yet migrating westwards. In the middle levels, a deep warm ridge is centered over the Western North Atlantic near 36 North 60 West with an axis southwestwards to North Carolina. Nevertheless, a ridge well to the north of the Keys should maintain the ongoing moderate to fresh breezes now in place.
Above average temperatures will persist over the far inland areas and in the hills through midweek while cooler conditions continue near the coast. A slight cool down is then expected region-wide for the latter half of the week as an upper level low develops off of the California Coast. Daytime temperatures on Tuesday are forecast to be slightly warmer inland with a weaker onshore flow, yet little change is expected near the coast given the persistent marine influence.
623 PM CDT MON AUG 15 2016 Tonight: Sufficient upper forcing along 500MB-300MB trough was able to generate a few thunderstorms this afternoon in South Central KS. Expect these to rapdily diminish late this afternoon as trough continue slow east progress.
The general troughiness will, however, remain in place with the atmospheric river from east Texas up through Michigan continuing to halt the progression of the large scale flow.
A quasi-stationary front lies across northeast AR that should slowly move east as a weak cold front over the next 24 hrs. A 1012 mb low pressure system was located just north of St Louis with a stalled front from Southeast Missouri into Western Arkansas. The upper trof over Eastern Kansas and Oklahoma will gradually shift east and weaken overnight. The heavy rain threat will be diminishing however as the low level moisture transport into the area starts to weaken and the overall lift across the region diminishes as the upper trof weakens. Lows will be in the lower 70s.
However, another large area of rain was advancing into southern Missouri from Arkansas, more associated with the upper low over southeast Kansas, and this will start to overspread the forecast area during the mid-evening hours. For the middle part of the week, the CWA will be influenced by a narrow ridge of high pressure. An upper level trough will be to the north while the leftover frontal boundary will be well to the south. A slight chance of pcpn will be there for Wed and Wed night as the upper level trough influences the weather over the northern part of the state.
827 PM EDT MON AUG 15 2016 Humidity will increase tonight and Tuesday as a warm front lifts gradually north through the region. The highest risk for scattered severe storms and localized flooding is on Tuesday and Tuesday Night as a weak cold front will move down from the north. This may generate another round of showers/storms later tonight moving sw-ne along with or over the warm front. The warm front should be up to the northern part of the CWA by morning - but may be dragging along in the eastern section. Temps will get back into the lower 90s in some of the southern valleys. Cold front doesn't push in until after the day.
1131 PM CDT MON AUG 15 2016 Tonight: Sufficient upper forcing along 500MB-300MB trough was able to generate a few thunderstorms this afternoon in South Central KS. Expect these to rapdily diminish late this afternoon as trough continue slow east progress.
738 PM EDT MON AUG 15 2016 Cold front nearly stationary across Western Ohio, as high pressure lingers off East Coast.
Chattanooga Airport, TN 74 94 73 92 / 30 20 30 50 Knoxville McGhee Tyson Airport, TN 72 92 72 90 / 30 20 30 50 Oak Ridge, TN 73 92 72 90 / 30 20 30 50 Tri Cities Airport, TN 69 90 69 88 / 30 20 40 50.