Aikyam-Lab/Synoptic-Bench huggingface dataset:
128 AM EDT Sat Apr 22 2017 Low pressure tracking across the Tennessee Valley and Southeast United States will result in rain chances this weekend, mainly south of I 70. Low pressure in conjunction with a crossing northern stream upper trough is likely to generate rain south of the I 70 corridor on Saturday, then funnel moisture across I 68 through the weekend as it digs over the Southeast Conus.
217 AM MDT Sat Apr 22 2017 Area still under influence of inverted trough along the Laramie Range this morning. Upper trough moves to the east through the morning today with rain/snow coverage decreasing.
For tonight, approaching and deepening upper trough over the mid- section of the nation will once again enhance the divergence aloft over the Tennessee Valley. Warm today, but plenty of clouds and rain showers Sunday will keep temperatures cooler.
Still, with the warm frontal surface aloft over the area, will continue to see a few light showers until early morning when the next upper wave approaches bringing more widespread showers with somewhat heavier amounts. This afternoon, high pressure continues to build into the northern Plains and into the Upper Midwest. Yesterdays cold front has drifted south of the Ohio River Valley, with northerly winds behind it and plenty of cirrus limiting the diurnal swing with the temps for Central Illinois. Either way, temperatures remain moderate overnight, only dropping into the low to mid 40s. Forecast slowly dries out Sat night and into Sunday as a wave out of the northwest dives into the weak trof aloft, briefly amplifying the wave pattern over the eastern half of the CONUS and moving out to the east.
There has been enough of a moisture increase in the lowest troposphere to support areas of dense fog and low cigs across the FL Panhandle and southeast AL this early morning. In the upper levels ridging will become near zonal flow. A low will develop near Arkansas with a cold front extending southward. Deep layer ridging will break down on Saturday as the next system approaches.
253 AM CDT Sat Apr 22 2017 A nice weekend day for outdoor activities today, with early morning cirrus shield over the southeast forecast area shifting further southeast, and upstream cirrus dissipating as it attempts to spill over the upper ridge. This yields high temperatures generally in the mid 60s, with afternoon dew points in the lower-mid 30s. Skies remain mostly clear tonight, with lingering ridge axis across northwest Iowa allowing for a fairly quick temperature drop in the evening. Readings should steady out a little more overnight, though, as the low level ridge shifts farther southeast and stronger low level southwesterly flow begins to develop. Generally looking for lows in the lower 40s, with some upper 30s in parts of northwest Iowa/extreme northeast Nebraska.
202 AM EDT Sat Apr 22 2017 Skies will gradually clear from the northwest today as a ridge of high pressure builds into the region. Sunny and warmer conditions are expected Sunday with highs from 65 to 70. If not already clear, skies will clear out through the day from north to south as strong ridging works in north of the area. Highs will end up warmer than today, likely reaching into the middle to possibly upper 50s. Have introduced mention in the grids but holding on headlines as ridge axis to remain north of the area which might keep more widespread frost from occurring. Rain chances will increase Tues into Weds as longwave trough digs to the west allowing increasing moisture and development of several areas of low pressure moving along sfc boundary.
359 AM EDT Sat Apr 22 2017 Low pressure will track along a stalled front over Tennessee today and tonight. High pressure centered over the northern plains and central Canada will slide east across the Great Lakes early in the week.
619 AM EDT Sat Apr 22 2017 Aviation A large area of high pressure located in the Upper Plains will track slowly eastward into the Great Lakes Region through the weekend. A weak cold front will try to slip down from the north Sunday night. A better shot for rain arrives for the middle part of the week when a low pressure system tracks in from the southwest. Models are in relative agreement in tracking a high pressure system in from the west through the weekend. A weak backdoor cold front slips down from the north Sunday night.
324 AM EDT Sat Apr 22 2017 Cool and unsettled weather will continue today as low pressure remains across the area. High pressure and drier air will finally build into the region on Sunday.
The models all pick up on these real time features, including the pocket of driest surface dew points in the upper 40s in southeast IA, nearer the High center.
First, moisture associated with a low pressure off the California coast has been pulled into the area by an increasing southwest flow associated with an upper level trough approaching western Canada. This will mainly occur from central Oregon to southeast Washington and could spill out into the eastern portion of the lower Columbia Basin late this afternoon and evening. Secondly, the approaching upper level trough will push a dry cold front across Washington and northern Oregon early Thursday. For this afternoon and evening, thunderstorm coverage will increase with the approach/passage of a cold front.
By early Thursday morning, a cold front will move from west to east into the forecast area, producing showers and thunderstorms along the front, especially through northwest and west-central Montana through the morning hours.
242 PM CDT Wed Aug 23 2017 Quiet and slightly below normal temps prevail across the cntrl TN Valley this Wed afternoon in the wake of a cold frontal passage earlier today. Temp trends currently in the lower/mid 80s should quickly lower this evening into the 70s and eventually into the lower 60s for most locations by early Thu morning. Quiet and tranquil conditions will prevail across the mid TN Valley thru the end of the work week, as a strong area of high pressure builds ewd across the Midwest/OH Valley regions. Afternoon temps look to remain slightly below seasonal trends Thu/Fri, with highs mainly in the mid 80s for most areas while overnight lows Thu night/Fri night remain in the lower/mid 60s.
130 PM EDT Wed Aug 23 2017 Primarily fair weather will continue through the weekend as high pressure dominates the region. High pressure will begin to take control of the region today with cooler and much less humid conditions. Highs will be in the lower to middle 70s with locations along the lakeshore barely touching 70 with the NW flow off the lake. Upper level disturbance will ride the edge of the ridge bringing increased clouds to much of the area, especially Thursday morning. Quiet conditions then settle in through the bulk of the period with the next trough beginning to edge towards the area from the west Mon/Tues.
Given high pressure ridging at the surface, winds will be lighter today, and temperatures still a bit below normal.
223 PM MDT Wed Aug 23 2017 Some showers and storms currently noted mainly around the mtns of southeast Wyoming but having some difficulty moving east off the higher terrain.
High pressure will stay to our north, over the Great Lakes for the short term. We won't be in the weakest part of the ridge, so not looking for as large of an urban/rural temperature difference each night as on a perfectly calm/clear night. At play will be what becomes of TC Harvey to our south and how much moisture gets picked up from it as an upper low drops into the Midwest. A persistent TC in the TX/LA area through midweek would likely help to keep troughing over our region, which would take in that moisture for good rain chances each day. High pressure will continue to sink southeast toward the region, bringing fair weather with low humidity.
700 PM EDT Wed Aug 23 2017 A cold front will move into the area tonight and linger nearby through the end of the week.
256 PM EDT Wed Aug 23 2017 High pressure will build east over the region and continue to influence our weather through Thursday night. The drier air has been a bit slower than anticipated to work into eastern Kentucky today and given the higher than expected moisture going into tonight, we can expect to see some pretty robust fog development in the valleys tonight. Overnight lows each night will dip into the 50s, but the cooler night will likely be Thursday night with the drier air in place going into the overnight period. High pressure will provide light winds and clear skies through the period. Some of this fog could lift up onto the ridges towards daybreak.
326 PM CDT Wed Aug 23 2017 A fast-moving trough of low pressure will bring rain showers to much of northern Minnesota and inland portions of northwest Wisconsin this afternoon through this evening. The highest rain totals are expected from western Itasca County including Alvwood and Inger south through Brainerd and Aitkin and Hinckley. High pressure will continue to be the main influence over the Northland for Thursday. Mostly sunny to partly cloudy skies are expected with temperatures remaining cool in the low to upper 60s.
625 PM EDT Wed Aug 23 2017 An approaching cold front will cross the area tonight into Thursday. High pressure will build into the region for the end of the week. bringing a cooler and drier airmass. High resolution models keep a majority of the activity near the Pee Dee region, so have kept the highest POPS there. Overnight low temperatures in the lower to middle 70s. Thursday morning, the cold front will be over the eastern Midlands with dry air pushing from the west.
401 PM EDT Wed Aug 23 2017 Noticeably cooler and drier conditions will be felt across the region through the weekend. West to nortwesterly flow in the low and middle levels of the atmosphere will keep the cool and dry air reinforced through the weekend. The usual cooler pockets should see mins dip into the 40s. In particular one late Thursday will increase clouds, however moisture remains too limited for anything other than slight chance for showers in the higher terrain. Low heights associated with upper trough and overall west to northwest flow will reinforce cool temps and dry humidity.
235 PM CDT Wed Aug 23 2017 Canadian high pressure was building southward into the region this afternoon. This high will settle over central Missouri tonight and then slowly push eastward Thursday.
347 PM EDT Wed Aug 23 2017 High pressure will build into the region through the end of the week. This will provide for mainly dry conditions and cooler temperatures through the weekend. An upper level trough will cross the region Thursday afternoon, increasing the chances for a spotty shower or two in central Ohio. Temperatures will drop tonight into the lower to middle 50s in most locations under clear skies and generally light northwest winds. Readings Thursday night will drop down to the 50-55 degree range with a few cooler locations dipping into the upper 40s.
/issued 1030 AM CDT Wed Aug 23 2017/ The cold front is currently over extreme north Mississippi and will push more to the south into Central Mississippi by this evening. Current forecast is on track to linger the chance of showers and thunderstorms along and south of the front this afternoon while a northeast wind north of the boundary provides a cooler and drier advection.
Isolated showers and thunderstorms will be possible at all terminals through the duration of the TAF period with LBB having the highest chances. /issued 308 AM CDT Wed Aug 23 2017/ The cold front responsible for our afternoon and evening thunderstorms was pushing through Permian Basin and North Texas this morning. Today, the ridge to our west begins to collapse but we remain in favorable NW flow through Thursday.
346 PM CDT Wed Aug 23 2017 A cold front has pushed into central Mississippi this afternoon while a relatively drier north to northeast wind prevails north of the boundary over the forecast area.
Weak cold front has now moved swd thru the cntrl TN Valley and closer to cntrl AL this Wed morning, as temp trends begin to rebound into the mid/upper 70s for several locations. Weak upper disturbances embedded within a broad upper trough axis in place over much of the ern CONUS may provide the means for a few showers/tstms later today mainly for areas along/S of the TN River. Reinforcing our cooler and drier air, we will have mostly clear skies that will let temps drop into the lower 60s.
128 PM EDT Wed Aug 23 2017 Noticeably cooler and drier conditions will be felt across the region through the weekend behind yesterday's cold front. West to nortwesterly flow in the low and middle levels of the atmosphere will keep the cool and dry air reinforced through the weekend. Isolated showers are possible later this afternoon mainly over the higher terrain with upper level trough making its way across the North Country. This will be a cooler drier air mass with dewpoints dropping to more comfortable temps, low to mid 50s. Will continue with chance for showers as upper level trough slowly pushes eastward across Northern New York and Vermont. Temperatures throughout the period will be slightly cooler than normal with the upper level trough overhead.
Upper level ridge axis and light westerly flow aloft will remain over the forecast area today. The exception will be farther east on the plains where low level moisture should hold in place east of the lee trough. High temperatures today will be a few degrees warmer on most of the plains and cooler easterly flow is replaced by warmer south/southwest flow. Temperatures will be slightly cooler due to the increased cloud cover by mid-afternoon cutting off the afternoon warming.
KSGF/KJLN/KBBG tafs: VFR flight conditions expected through the taf period as high pressure builds across the region. The high will be centered across central Missouri late tonight and given light winds and clear skies some patchy fog will be possible over central Missouri.
625 AM CDT Sun Sep 25 2022 (Now through Monday) Closed 500 mb low pressure centered over northeast Mexico and extended over the BRO CWFA today will fade tonight and be replaced by a developing deep longwave trough of low pressure over the Mississippi River Valley and western Gulf of Mexico. This trough will allow a weak cold front to approach Deep South Texas and the Rio Grande Valley from the north on Monday.
In the wake of a cold front, high temperatures will only reach into the upper 70s to lower 80s today, with the warmest readings in south central Kansas.
401 AM CDT Sun Sep 25 2022 High pressure aloft over the Great Basin and a low pressure system over the Great Lakes has brought forth northwesterly flow into the Northern Plains. Ridging will continue to slowly move eastward causing temperatures to slightly increase into the upper 60s to upper 70s. Broad troughing will continue across the Great Lakes with a ridge out west slowly progressing eastward.
A cold front will be making its way southeast across the PAH forecast area early today, moving south of our counties by around 15z. Cooler air will lag a little behind the front, so high temperatures should still make it into the upper 70s north to the lower to middle 80s south.
642 AM CDT Sun Sep 25 2022 H5 analysis this morning had low pressure over the UP of Michigan. A trough extended south of this feature into the Ohio Valley. A ridge axis extended from Nevada, north northwest into northern British Columbia. At the surface overnight, high pressure was present over northeastern Wyoming and frontal boundary was located over central Kansas. The axis of this high pressure will be oriented from northwestern Kansas into northwestern Nebraska later this afternoon.
Mid- level energy will round the base of a deepening trough across the Great Lakes will push the main surface front through the area tonight.
Largely a Ctrl+C, Ctrl+V forecast from yesterday to today with upper-level ridge over southern California dominating the synoptic pattern.
629 AM CDT Sun Sep 25 2022 (Today and tonight) The 500mb trough across the eastern United States will bring a weak cold front into the northern portions of the CWA (the Big Country region) this morning into early this afternoon. Drier and slightly cooler air will filter into west-central Texas late tonight into early Monday morning. Temperatures will be above normal this afternoon with highs in the lower to middle 90s across the region.
Temps this morning were a bit cooler away from Fort Peck lake. TFJ Strong high amplitude upper level ridge over the Pacific Northwest will keep a northwest flow over the area the next couple days bringing us dry conditions and temperatures about 5 degrees above average. By midweek the ridge axis shifts overhead and temperatures peak into the low to mid 80s.
High pressure aloft over the Great Basin and a low pressure system over the Great Lakes has brought forth northwesterly flow into the Northern Plains. Ridging will continue to slowly move eastward causing temperatures to slightly increase into the upper 60s to upper 70s. Broad troughing will continue across the Great Lakes with a ridge out west slowly progressing eastward.
747 AM EDT Sun Sep 25 2022 The decaying boundary is lingering just to the south of the CWA border this morning, with weak ridging across the local area.
619 AM CDT Sun Sep 25 2022 (Today through Monday) A mid to upper level low is evident on water vapor satellite imagery this morning. The airmass over our CWA remains warm and moist with dewpoints from the middle 60s to the lower 70s. The upper low and the surface front will continue to define our weather through the short term period. The upper low is expected to continue to drift toward the west today, and some moisture advection could lead to isolated showers and thunderstorms over the Hill Country and Rio Grande Plains this afternoon. The cold front will reach our northern border early this evening and move through the area overnight. Highs will be in the lower to middle 90s across the CWA.
An upper level low is spinning over the Great Lakes early this morning. As of 315 AM, a couple of storms have been able to develop over Grayson and Breckinridge/Hardin counties. Likewise, the sfc cold front will cut southeast through the area from mid-morning to early afternoon. Rain chances quickly taper off in the eastern CWA by early afternoon as drier air arrives behind the cold front. High temperatures today should range from the low/mid 70s in southern Indiana to the lower 80s near the TN border. Temperatures will fall into the low to mid 50s tonight with mostly clear skies and cold air advection. Amplified longwave trof over the eastern CONUS will dominate the upper pattern for the first half of the week.
623 AM CDT Sun Sep 25 2022 (Today through Monday Night) Southeast Texas is still on track for one more very warm day today before the arrival of Monday's cold front. Winds will shift to the north late tonight through the day on Monday as a pre-frontal trough and the front itself move into the area. Monday night is when we begin to really feel the effects of the cold front as significantly lower dew points filter into the area from the north.
456 AM CDT Sun Sep 25 2022 Noticably cooler temperatures and breezy northerly winds are anticipated across the local area today as cooler air advects in from the north behind yesterdays cold front. While cooler temperatures are on tap. and drier air in the wake of yesterdays cold front. expect seasonable temps all with with highs mostly in the lower to mid 70s. along with dry conditions as high pressure aloft transitions across the local area with no notable disturbances expected to impact the local area.
629 AM CDT Sun Sep 25 2022 (Today through Monday night) For today, slightly cooler temperatures are in store for the OK and TX Panhandles in the wake of the most recent weak cold frontal passage. Based on the above, have raised surface winds a little over the NBM 90th percentile values across the higher terrain of the western, southwestern, and south central counties closer to the MAVMOS and LAVMOS guidance values. At upper levels, an amplified ridge of high pressure over the Intermountain West coupled with a deepening trof across the eastern states will result in dry northwest flow today through Monday night.
951 AM EDT Sun Sep 25 2022 Rounds of showers and thunderstorms are expected today with a passing cold front. Additional showers are possible through mid week under persistent upper troughing, resulting in seasonably cool temperature. The focus will likely shift northward for the aftn period where heating will more quickly be achieved and new convection will develop near the warm front. These features plus an impinging jet will support rounds of showers and thunderstorms before the cold front passage and dry slot limit activity during the late afternoon hours.
1029 AM EDT Sun Sep 25 2022 A cold front will move across the area today. However, a low pressure system over the eastern Great Lakes will be slow to move east.
631 AM CDT Sun Sep 25 2022 (Today and tonight) An amplified upper pattern remains in place today with broad troughing over the eastern CONUS and a ridge axis over the Great Basin. The surface cold front continues its slow march southward early this morning, but only modestly cooler temperatures are expected today in its wake. Surface flow will intensify and veer to a more NE direction by mid-morning in response to building high pressure over the northern TX Panhandle.
723 AM EDT Sun Sep 25 2022 Weak low pressure moseying across the Upper Great Lakes region early this morning is what's responsible for the ongoing cloudiness and rainyness. Although the low's center will be E of the forecast area by around/shortly after dawn, the next approaching disturbance from Manitoba into Ontario will ensure no clearing of clouds and/or precip chances will occur during this forecast period.
Mid-level energy will round the base of a deepening trough across the Great Lakes will push the main surface front through the area tonight.
(Rest of Today) Scattered showers and thunderstorms will continue to push ESE across the region this morning ahead of a cold front pushing ESE into Tennessee. The end result should be some clearing conditions from northwest to southeast over the course the afternoon as a cooler and drier air mass works its way in by early this evening.
Dry and somewhat cooler weather prevails in the wake of a cold front that passed earlier. Somewhat warmer as the ridge aloft strengthens and 700 mb temperatures rise to near 10 Celsius, yielding maximum temperatures in the 70s to lower 80s. Slightly warmer than the previous night as the airmass moderates somewhat.
Northerly winds expected to continue most terminals overnight and tomorrow morning, with return to southwesterly winds at KWWR and possibly KCSM toward end of forecast period as lower level ridge shifts east.
117 PM EDT Sun Sep 25 2022 Showers and isolated thunderstorms are expected today ahead of an incoming cold front. Additional showers are possible through mid week under persistent upper troughing, which will also result in seasonably cool temperature. Shower and isolated thunderstorms are expected through this evening primarily north of Pittsburgh, focused ahead of a sfc cold front and near a mid-level warm front. Dry slotting along the southern periphery of the Great Lakes trough is expected to reduce precipitation chances for locations south.
(This afternoon through Monday night) Isolated showers and thunderstorms have been ongoing across the northern half of the Permian Basin since late this morning ahead of a cold front that has now moved into the region. In the wake of the front, high temperatures today will be a couple degrees cooler than yesterday, with lows tonight expected to dip into the lower to middle 60s for most, with middle to upper 50s possible for the higher terrain and portions of Southeast New Mexico and the northwestern Permian Basin. Continued cold advection Monday will also result in cooler, near normal temperatures, with highs in the lower and middle 80s for most, 70s in the mountains, and 90s through portions of the Rio Grande Valley.