Aikyam-Lab/Synoptic-Bench huggingface dataset:
144 PM MDT Sat Oct 26 2019 Upper trough is digging into the northwest quadrant of the CONUS, with the jet across Idaho to Wyoming into western SD. Surface obs show gusty northwest winds across the CWA behind a cold front, with gusts into the 50s across the plains adjacent to the eastern Black Hills. Snow will end by mid morning tomorrow, except some lingering light snow across southwest SD ahead of the upper trough axis working its way through the region.
The stratus deck is the result of some low level moisture remaining trapped beneath a thermal trough axis and resultant elevated temperature inversion. Conditions will rapidly improve between 15z and 18z as the thermal trough and related elevated inversion weakens.
1145 AM MDT Sat Oct 26 2019 The Pacific Northwest trough is making its way into the northern plains; its associated cold front is quickly approaching the CWA from the northwest. As the cold front slides through the region today, northwesterly winds will become gusty, and precip will spread across the CWA. Tonight, the frontogenesis and snow band shift southeastward, stretching from southwestern to central SD; this is where the highest QPF/snow is expected. Three to five inches of snow will be possible across southwestern SD, with the higher amounts generally closer to the NE border.
1023 AM CDT Sat Oct 26 2019 A cold front continues to slide across South Dakota. A cold front will sweep in from the west this morning. A deep upper trough will begin to dig into the Dakotas tonight. While daytime highs will remain above freezing, tonight they will fall into the 20s. While highs are expected to climb into the 50s today, highs will only top out in the 30s under the upper trough on Sunday. The upper pattern throughout the extended features a semi- permanent longwave trough parked over the central CONUS.
Overall severe potential is low, but given the low lvl wind energy, cannot rule out localized damaging winds -- especially west of I-75 this evening.
405 PM CDT Sat Oct 26 2019 Visible satellite imagery shows cloud cover continuing to gradually diminish this afternoon as high pressure builds into the area. This area of high pressure will contribute to a relaxing of the pressure gradient over the Lower Mississippi River Valley and winds becoming light/variable tonight.
Next round of pcpn is forming over the High Plains, and is headed toward the southwest CWA. A cold front continues to traverse the region and will be through the CWA over the next few hours. One to two inches of snow is possible in central South Dakota with the highest amounts likely confined to along and south of the I90 corridor. Beyond tonight, an upper level longwave trough sets up over the southwest to central CONUS and doesn't really move much through the workweek. By the weekend, models indicate the longwave trough will finally kick off to the east and a change to northwest flow will ensue.
The low pressure system that was at one point known as Olga continues to push to the north into Tennessee. Overnight lows will range from the mid up upper 40s in the west to the lower 50s in the east.
930 PM EDT Sat Oct 26 2019 Moisture will continue to increase over the area as a weak cold front approaches. Unsettled conditions will continue through mid to late week as another low pressure system moves through the area. Deep low pressure is now lifting into the Midwest with a cold front extending southward into the eastern Gulf of Mexico. A low pressure system will move towards the eastern Great Lakes with a trailing cold front approaching the CWA early Sunday morning. High pressure moves into the forecast area for Sunday night.
Temperatures will drop below freezing over the entire area by sunrise, with the coldest readings (near zero) expected in the higher elevations of eastern Valley County.
At 23:10Z/6:10PM, satellite and surface observations show a shift in winds from southerly to westerly across the forecast area as a cold front arrives. Areas west of Interstate 65 saw a few peeks of sun before sunset, associated with a narrow dry slot wrapping into the upper-level trough; however, an upstream low cloud deck will move back into the region shortly. Cooler temperatures will arrive behind the frontal passage.
Given the higher dewpoints, also opted to increase low temperatures slightly across the east for tonight as well. South wind will turn north in northwestern Oklahoma Sunday morning behind a cold front. Somewhat warmer conditions are expected tomorrow, at least across the southeast half of Oklahoma, and in north Texas.
The low pressure system that produced very gusty winds and showers on Saturday will move quickly to the Great lakes tonight.
/issued 405 PM CDT Sat Oct 26 2019/ Visible satellite imagery shows cloud cover continuing to gradually diminish this afternoon as high pressure builds into the area. This area of high pressure will contribute to a relaxing of the pressure gradient over the Lower Mississippi River Valley and winds becoming light/variable tonight.
A very cold trough of low pressure will slam into Nevada Saturday night and Sunday, bringing gusty winds, a few showers, and much colder temperatures.
A strong but dry weather system will move across California Sunday, bringing gusty winds and cooler temperatures.
616 PM CDT Sat Oct 26 2019 A cold front continues to traverse the region and will be through the CWA over the next few hours. One to two inches of snow is possible in central South Dakota with the highest amounts likely confined to along and south of the I90 corridor. Beyond tonight, an upper level longwave trough sets up over the southwest to central CONUS and doesn't really move much through the workweek. By the weekend, models indicate the longwave trough will finally kick off to the east and a change to northwest flow will ensue.
Sfc front should push thru mid state region this evening as sfc/upper level low pressure system moves quickly newd into the cntrl Great Lakes Region on Sun morning. Mid state region should remain dry Sun thru Tue due to transitioning sfc ridging influences and dry nwly flow aloft. Latest GFS/ECMWF solutions much more in agreement with mid next work week system on timing/shwr coverage across the area as deep upper level troughing develops across the cntrl plains and moves newd dragging a sfc front across the mid state region on Thu. Behind mentioned sfc frontal passage, lows around freezing will be possible Thu night, Fri night, and even Sat night. The low pressure system that produced very gusty winds and showers on Saturday will move quickly to the Great lakes tonight.
South wind will turn north in northwestern Oklahoma Sunday morning behind a cold front. Somewhat warmer conditions are expected tomorrow, at least across the southeast half of Oklahoma, and in north Texas.
723 PM EDT Sat Oct 26 2019 At 23Z a cold front was located from just north of KEVV southward through KBNA and KBHM. Winds have been gusty at times ahead of the cold front.
Near normal nighttime lows in the low to mid 70s, with coastal sites seeing yet another night of potential warm minimum records.
1039 PM EDT Sat Oct 26 2019 Currently - A broad surface through lower level Atlantic ridge extends across the the Florida Keys region. The deep moisture is the lingering effect of a trough that earlier migrated northward into the eastern United States. Short Term Update - The surface through lower level ridge will remain near the Keys, ensuring that synoptic scale winds will remain light out of the southeast to south. With that said, clusters of showers and a few embedded thunderstorms will begin working their way across the Florida Keys starting with the Lower Keys. A ridge will remain near Keys waters overnight resulting in light southeast to south breezes across Keys waters.
623 PM CDT Sat Oct 26 2019 Flying concerns really do not roll in until tomorrow morning with the next cold front. This amplified pattern will be characterized by long wave troughing over North America with ridging extending northward into the Gulf of Alaska. The initial plunge is expected to occur on Sunday with a passage of a cold front in the morning to afternoon hours.
Upper trough is digging into the northwest quadrant of the CONUS, with the jet across Idaho to Wyoming into western SD. Surface obs show gusty northwest winds across the CWA behind a cold front, with gusts into the 50s across the plains adjacent to the eastern Black Hills. Snow will end by mid morning tomorrow, except some lingering light snow across southwest SD ahead of the upper trough axis working its way through the region.
646 PM CDT Sat Oct 26 2019 GOES water vapor imagery this afternoon revealing a closed low spinning northeastward across southern MO this afternoon while a mid- level trough was dropping southeast through the Dakotas. Visible satellite showing cirrus shield from that closed low covering a good portion of our forecast area. With the departure of that low Sunday, a cold front will slip through the area with increasing cloudiness. High pressure builds in from the Plains Sunday night for partly cloudy skies and lows in the mid 20s to lower 30s.
A frontal boundary associated with the low center moved through the forecast area this afternoon, bringing a westerly wind. Upper high pressure over the western Atlantic will build westward across the Florida Peninsula and Gulf of Mexico in the wake of the storm system lifting away from the area.
South wind will turn north in northwestern Oklahoma Sunday morning behind a cold front and move into central Oklahoma around 272400. Given the higher dewpoints, also opted to increase low temperatures slightly across the east for tonight as well. South wind will turn north in northwestern Oklahoma Sunday morning behind a cold front. Somewhat warmer conditions are expected tomorrow, at least across the southeast half of Oklahoma, and in north Texas.
For POP, loaded NBM which looked a lot like the high-res guidance tonight and tomorrow morning for "showers" and added "flurries" for everyone else since a flake or two can't be ruled out anywhere. Temperatures tonight should drop this evening under any clear skies, but another wave will bring back clouds and isolated snow showers as this upper trough is in place over the Canadian Prairies.
625 PM CDT Sat Oct 26 2019 Cold front across central South Dakota as of 20Z will shift east across the forecast area through the evening hours. Winds will decrease Sunday night but northwest flow will draw sub freezing temperatures at 925 hpa into the region, where they will remain throughout the week. Large upper level trough in upper level jet develops late in the weekend across the north western quadrant of the lower 48 keeping temperatures unseasonably cool throughout the week.
Areas where the skies have cleared (SE TX/extreme SW LA) have seen temperatures fall into the low-mid 50s.
920 PM EDT Sat Oct 26 2019 01Z Surface analysis places an area of low pressure in eastern Illinois with a trailing cold front across central Kentucky/Tennessee and into the Gulf Coast. Chattanooga Airport, TN 57 69 50 75 / 80 10 10 0 Knoxville McGhee Tyson Airport, TN 56 68 48 75 / 100 10 0 0 Oak Ridge, TN 56 68 47 75 / 100 10 10 0 Tri Cities Airport, TN 57 69 45 75 / 70 10 0 0 TN.
518 PM MDT Sat Oct 26 2019 Upper trough is digging into the northwest quadrant of the CONUS, with the jet across Idaho to Wyoming into western SD. Surface obs show gusty northwest winds across the CWA behind a cold front, with gusts into the 50s across the plains adjacent to the eastern Black Hills. Snow will end by mid morning tomorrow, except some lingering light snow across southwest SD ahead of the upper trough axis working its way through the region.
613 PM CDT Sat Oct 26 2019 Rainfall will end from west to east during the late afternoon as lift around the departing upper low weakens. Heights will rebound nicely on Sunday as a subtle ridge develops ahead of the deepening mean trough over the western US. Under these favorable conditions along with abundant sunshine look for a much warmer day on Sunday.
/issued 950 PM CDT Sat Oct 26 2019/ As low cloud decks wrapping around backside of retreating low pressure, slowly shift eastward, skies will begin clearing from the west.
Conditions will rapidly improve between 15z and 18z as the thermal trough and related elevated inversion weakens.
353 AM CDT Sun Oct 27 2019 A cold front will pass through the region with low clouds and northwest winds developing behind it.
A strong cold front will sweep south across the entire forecast area through tonight.
321 AM CDT Sun Oct 27 2019 Cold fronts and potential for wintry precip main concerns this week. Another nice day anticipated across much of Oklahoma and western north Texas today, exception being northwest Oklahoma, which will be to the north of the advancing cold front for much of the day.
400 AM CDT Sun Oct 27 2019 At 08Z, a cold front had advanced to near Liberal, Great Bend KS and St. These snow chances will continue as a positively tilted trough extending from eastern MT into Nevada advances into North Dakota through Utah tonight.
1043 PM CDT Sat Oct 26 2019 Cold front across central South Dakota as of 20Z will shift east across the forecast area through the evening hours. Winds will decrease Sunday night but northwest flow will draw sub freezing temperatures at 925 hpa into the region, where they will remain throughout the week. Large upper level trough in upper level jet develops late in the weekend across the north western quadrant of the lower 48 keeping temperatures unseasonably cool throughout the week.
1147 PM CDT Sat Oct 26 2019 Rainfall will end from west to east during the late afternoon as lift around the departing upper low weakens. Heights will rebound nicely on Sunday as a subtle ridge develops ahead of the deepening mean trough over the western US. Under these favorable conditions along with abundant sunshine look for a much warmer day on Sunday.
208 AM EDT Sun Oct 27 2019 Moisture will continue to increase over the area as a weak cold front approaches. Unsettled conditions will continue through mid to late week as another low pressure system moves through the area. Deep low pressure is now lifting into the Midwest with a cold front extending southward into the eastern Gulf of Mexico. A low pressure system will move towards the eastern Great Lakes with a trailing cold front approaching the CWA early Sunday morning. High pressure moves into the forecast area for Sunday night.
348 AM CDT Sun Oct 27 2019 Today and tonight will be decidedly cooler than yesterday. There are 2 main systems as two PV anomalies rotate through the base of the main trough across the middle of the country.
LLWS will come to an end later this morning as the approaching cold front moves into the area. This amplified pattern will be characterized by long wave troughing over North America with ridging extending northward into the Gulf of Alaska. The initial plunge is expected to occur on Sunday with a passage of a cold front in the morning to afternoon hours.
The cold front that moved through the area early this morning will continue to trek southward with high pressure building into western Kansas.
133 AM MDT Sun Oct 27 2019 The upper trough stretches across the northwestern CONUS, with a 110 kt jet streak moving over SD.
318 AM EDT Sun Oct 27 2019 Rain will diminish rapidly with passage of a cold front this morning. Deep low pressure continues to dig over the Great Lakes this morning with a very strong wind field throughout its eastern flank. Hence, no advisory issued, but confidence in the protection is lowest over the ridges and that area is being monitored. The low is still projected to dig northeastward across the Great Lakes and drag a cold/occluded front across the region in the peri- dawn hours.
01Z Surface analysis places an area of low pressure in eastern Illinois with a trailing cold front across central Kentucky/Tennessee and into the Gulf Coast. At the very end of the period, fog will likely begin to develop across the area with the highest probabilities at TRI. JB Chattanooga Airport, TN 69 50 75 53 74 / 10 10 0 10 10 Knoxville McGhee Tyson Airport, TN 68 48 75 53 74 / 10 0 0 10 10 Oak Ridge, TN 68 47 75 52 74 / 10 10 0 10 10 Tri Cities Airport, TN 69 45 75 49 73 / 10 0 0 10 10 TN.
1049 PM CDT Sat Oct 26 2019 GOES water vapor imagery this afternoon revealing a closed low spinning northeastward across southern MO this afternoon while a mid- level trough was dropping southeast through the Dakotas. Visible satellite showing cirrus shield from that closed low covering a good portion of our forecast area. With the departure of that low Sunday, a cold front will slip through the area with increasing cloudiness. High pressure builds in from the Plains Sunday night for partly cloudy skies and lows in the mid 20s to lower 30s.
1203 AM CDT Sun Oct 27 2019 Low pressure continues to track up the Mississippi River Valley and has resulted in widespread rain across much of the area today. The rain will continue into the evening along a deformation band on the NW side of the low before finally moving out of the region prior to midnight. Clouds will begin to move back into the area Sunday night as a weak cold front approaches the area from the NW.
216 AM EDT Sun Oct 27 2019 Stacked upper to surface ridging over the region from the W Atlantic to hold in place through mid-late week.
Weakening cold front will continue to move slowly eastward across the forecast area today. Forcing will be limited with the upper trough pulling out quickly to the north, so rainfall amounts will be limited.
324 AM CDT Sun Oct 27 2019 Cold advection continues today as the axis of the upper level trough moves eastward through the Dakotas with a secondary cold front.
This all occurs while a pretty deep upper low/trough drops out of the pacific northwest Tue, working into the central plains by early Thu. Thu night the upper low moves swiftly from the plains up into the great lakes. This will drag a cold front across the mid-state late Thu afternoon/ evening. Following this system, long wave upper trough remains over the region for several days.
259 AM CDT Sun Oct 27 2019 A cold front will push southward across central Kansas this morning and looks to stall out near the Kansas Turnpike corridor, then resume its march southward across southeast Kansas tonight.
351 AM CDT Sun Oct 27 2019 The cold front has passed east of the FA, with steady northwest winds in its wake.
Adjustments have also been made to temperature Today to better reflect peaking heating occuring btwn the end of the rain and the passage of the sfc cold front a few hours later. An upper level low will move into Ontario, Canada today, helping to aid the eastward progression of a sfc cold front, with the line of rain farther east along the pre-frontal trough. Temperature will peak btwn the cold front and the rain edge, with a brief slot of clearer skies due to drier air aloft.
For that reason, will remove the low precipitation chances across west central Minnesota early this morning. The cold front has passed east of the FA, with steady northwest winds in its wake. Winds should be lower on Monday, but it will be a continuation of the cold, with highs again in the low to mid 30s.
630 AM CDT Sun Oct 27 2019 At 08Z, a cold front had advanced to near Liberal, Great Bend KS and St. These snow chances will continue as a positively tilted trough extending from eastern MT into Nevada advances into North Dakota through Utah tonight. On Monday, the upper trough axis will cross western Nebraska. Behind the trough axis, clearing skies should return from west to east in the afternoon. A strong upper trough, currently across the eastern half of Northwest territory, Canada, will drop through Montana into Idaho and Wyoming Monday night.
535 AM EDT Sun Oct 27 2019 Rain will diminish rapidly with passage of a cold front this morning. Deep low pressure continues to dig over the Great Lakes this morning with a very strong wind field throughout its eastern flank. Hence, no advisory issued, but confidence in the protection is lowest over the ridges and that area is being monitored. The low is still projected to dig northeastward across the Great Lakes and drag a cold/occluded front across the region in the peri- dawn hours.
412 AM CDT Sun Oct 27 2019 This pattern of cold front and tropical feature will repeat once again. The cold front that moved through has now stalled over the eastern gulf. This feature will move into and merge with the old front moving it back to our area by mid week as return flow ahead of the next cold front strengthens.
The combination of near-record temps and dew points in the low 70s will result in peak heat index values between 96-98. As a ridge builds from the northeast into south FL today, 10 to 15 knots winds will be from the southwest this morning, followed by the development of a sea breeze that will shift winds from the southeast near the coastline. Late in the afternoon, the ridge will shift slightly east, allowing for winds to then flow from the south-southeast.
A cold trough of low pressure will continue moving through the state today bringing some light snow showers to eastern Nevada.
The next cold front is making its way into northern North Dakota at this time. Cold advection continues today as the axis of the upper level trough moves eastward through the Dakotas with a secondary cold front.
Late tonight through Monday night will be the second passing wave of low pressure energy just strong enough to wring out some more scattered snow showers.
507 AM MDT Sun Oct 27 2019 The upper trough stretches across the northwestern CONUS, with a 110 kt jet streak moving over SD. Similar, possibly slightly warmer temperatures are expected for Monday ahead of the next system. Main energy with this system will be to the south of our area as flow splits and the upper low closes off over UT.
Today's forecast highs are on the low end of model-blended guidance. Upper level energy will dive south from western Canada, helping to carve out a broad longwave trof over Rockies early this week. Southwesterly flow will prevail downstream of this trof, across the Midsouth on Monday.
Thereafter, expect mainly sunny skies by this afternoon which will allow for a much warmer day. Will keep with highs in the lower-mid 60s for today. A cold front will move into northeast Missouri by early this evening and then progress slowly southeast across the CWA through the night.
636 AM CDT Sun Oct 27 2019 Today and tonight will be decidedly cooler than yesterday. There are 2 main systems as two PV anomalies rotate through the base of the main trough across the middle of the country.
A Coastal Flood Statement remains in effect for the Lower and Middle Keys due to minor coastal flooding near high tides.
A weather system brushing the area will bring gusty winds today followed by cooler temperatures and a slight chance of showers in the White Mountains on Monday.
Winds will become easterly at HOB this afternoon as a cold front moves into the area. /issued 334 AM CDT Sun Oct 27 2019/ Strong upper trough extending from ND to NV this morning will swing east reaching the 4 Corners region Monday and passing across the Panhandle later in the day.
657 AM CDT Sun Oct 27 2019 A cold front will pass through the region with low clouds and northwest winds developing behind it. Looking ahead, Monday will be cooler as well under cloudy skies. Early morning satellite imagery with surface obs showed a strong cold front across the region.
A cold front will approach the area Monday afternoon, though rain with it should hold off until evening. While 60s will continue Monday afternoon east of I-55, areas to the west will be several degrees cooler. Back edge of the low clouds is approaching I-55 and will continue to move eastward through sunrise. A cold front will be approaching Galesburg by late tonight, but impacts from it will be after sunrise Monday.
High pressure and offshore flow will result in dry generally benign weather through much of the coming week.
641 AM CDT Sun Oct 27 2019 Cold front has just moved through AMA and will continue to move south through the area this morning.
Chattanooga Airport, TN 69 50 76 54 / 10 0 0 10 Knoxville McGhee Tyson Airport, TN 69 49 76 54 / 10 0 0 10 Oak Ridge, TN 69 48 75 52 / 10 0 0 10 Tri Cities Airport, TN 70 45 76 50 / 10 0 0 10.