Aikyam-Lab/Synoptic-Bench huggingface dataset:
558 PM MDT Fri Apr 19 2024 - Freezing Drizzle and Dense Fog will be the main concerns tonight especially between Cheyenne and the I-80 Summit.
658 PM CDT Fri Apr 19 2024 - A Freeze Warning for temperatures at or below freezing is in effect tonight into Saturday morning for portions of south central Nebraska.
601 PM CDT Fri Apr 19 2024 (Rest of today through Saturday) At midday, a cold front was moving across Middle Tennessee. On the southeast side of the front including the Plateau, temperatures had warmed into the lower 70s with partial sunshine. Look for the low clouds and cooler temps to continue spreading southeastward through the rest of the day. Through the weekend, the center of a large, cool high pressure system will move from Canada down the plains, eventually to the Mid Ms Valley.
meanwhile, lower to mid level ridging remains dominant across our broader area. Short Term Update - Surface through mid level ridging will dominate Keys weather through the overnight period. Surface ridging across Florida will maintain gentle mostly easterly breezes. However, interior and protected locations may radiate into the lower 70s.
956 PM EDT Fri Apr 19 2024 A secondary cold front will move through the area late tonight into Saturday.
940 PM EDT Fri Apr 19 2024 Passing cold front brings showers through late this evening.
(Tonight) The cold front has now moved SE of the central TN Valley this Fri evening, with lingering convection tapering off to the south over central AL. These lower dew pts will continue to drift southward overnight, allowing lows into early Sat to fall mainly into the lower/mid 50s.
(Today through Sunday afternoon) WV imagery shows the west coast trough has made landfall, moving through SoCal/Arizona and approaching West texas and Southeast new Mexico, leaving the area under southwest flow aloft. At the surface, a secondary cold front is pushing into the area, and this should result in highs today ~ 9-10F cooler than yesterday's as CAA behind the front continues in northeasterly flow. Meanwhile, area radars show convection developing in the lower Trans Pecos, and this activity is still forecast to spread west and north today as the front moves farther southwest and large- scale ascent commences w/the arrival of the west coast trough. As the trough arrives, mid-level lapse rates increase to 7C/km or better, so a hail threat will be present.
256 AM CDT Sat Apr 20 2024 - Temperatures are expected to drop to or below freezing this morning and tomorrow night.
(Today through Sunday Night) Cool temperatures are in place across the area this morning with the cold front south of the state. Precip will come to an end by mid-day Sunday as an H500 trough moves south toward Arkansas from the Central Plains. Sfc ridging will build south toward the area as well and cooler, dry air will be seen. As the ridge settles over the state by Sunday night, winds will go calm and sky conditions will become clear.
(Today) Dense cloud cover remains in place in wake of a cold front that is currently stalled just to the southeast of the area. These clouds are currently keeping temperatures relatively mild this morning with 08z readings still in the low to mid 60s in spite of the northerly flow attempting to advect in a cooler air mass. Otherwise it will remain mostly dry and much cooler than yesterday as highs will struggle to climb above the 65-70 degree range.
1221 AM CDT Sat Apr 20 2024 - Frost and freezing temperatures possible Sunday morning. A weak backdoor cold front will slowly sag southward across the area this evening. Cloud cover could limit how far temperatures fall across most of the area, but with clearing sky and light wind across northern Kansas, temperatures may fall to near or slightly below freezing.
An area of low pressure remains centered over Ontario this afternoon which is forecast to slowly move eastward tonight into tomorrow, thus leaving MN and WI on the western periphery of the current troughing pattern. Strong WNW flow and CAA will continue to persist through the rest of today before h850 thermal ridging tries to force warmer air back into the northern plains late this weekend. With vegetation greening up and temperatures subfreezing, Freeze Warning headlines are in effect for both central and southern MN and western WI from midnight to 7 AM Saturday morning. Late this weekend features high pressure, warmer temepratures and drier conditions. By Sunday, southerly flow will assist temepratures to reach near 60 degrees although min RH values in the low 20 percents across Western MN will elevate fire weather conditions.
Temperatures are hovering in the lower to mid 70s, with dewpoints in the upper 60s to near 70, and winds on land from the east to southeast at 5 to 10 mph. Surface analysis depicts weak high pressure over the western Atlantic, extending westward across the Florida peninsula into the eastern Gulf of Mexico. Aloft, deep ridging remains in place over the Gulf, and continues to dominate the weather regime across South Florida and the Keys. Typical late dry season weather will prevail through the weekend, as the lower to mid level ridge over the Gulf remains in control.
Omega blocking pattern present over western Canada which will be interesting to see what kind of temporal issues are encountered with the latest modeling data. Having said that the eastern trough of this omega block will sit over the Great Lake region bringing colder and drier conditions. So northwest OH, northeast IN, and southeast MI will have the higher chances for frost.
The highest potential for storms will be in the southeast, where differential heating will help add some fuel to the airmass. Meanwhile a disturbance and low pressure system will ride along and north of the front tonight into Sunday.
Breezy cool weather is in place as our area remains on the southern periphery of a very cold upper trof of weather in the upper Great Lakes and southern Canada. That wind will both keep frost formation to a minimum, but also increase to impact of subfreezing temperatures. Wind chills should remain in the lower to mid 40s through the day! Blustery! Additional frost/freeze potential continues both Saturday and Sunday nights, with lighter winds supporting more frost formation than last night or tonight. Sunday will certainly be a much more pleasant day within the weekend, as highs reach the lower 60s with lighter winds, and full sunshine.
1209 AM CDT Sat Apr 20 2024 (This evening through Sunday) Surface cold front has pushed thru the region, and notably cooler and drier air was filtering into the region. Overnight lows tonight will bottom out in the 40's across the north and in the western mountains, and generally in the lower 50's elsewhere. The weather should start to improve on Sunday as high pressure builds into the area in earnest.
Low pressure developing along this front should lead to widespread rain Sunday.
827 PM PDT Fri Apr 19 2024 A bit cooler across the board today with cloud cover in addition to a deeper marine influence. Expecting this to remain in place through into Saturday as the responsible upper low moves through and the onshore flow increases through tomorrow.
(Today through Sunday) Persistent ridging over the Gulf of Mexico will begin to erode today as a broad mid-level trough moves across the southeastern US. Temperatures this afternoon and tomorrow could reach the low-mid 90s over the interior and southwest FL.
- Sunday looks substantially warmer with possible elevated fire weather. Anyway, the main factor today is north to northeasterly flow around an area of high pressure over southwestern Saskatchewan. We should begin to transition into a more springlike pattern as ridging begins to build into the area. It will still be on average 10 degrees cooler than average, but at least the sunshine and light wind should make it feel warmer. Sunday will be the significantly warmer day as we go to the backside of the ridge and flow turns southwest, pushing temperatures around 20 degrees warmer in most places. Later in the day, a trough and cold front will slide through the area and bring a chance for showers, mainly to northwestern Wyoming.
A brief cool down is expected as a reinforcing cold front will move through Sunday night.
314 AM CDT Sat Apr 20 2024 - Below freezing temperatures are expected again tonight into Sunday morning, potentially creating some frost/freeze concerns across portions of the area.
1102 PM CDT Fri Apr 19 2024 - Chilly start to the weekend with temps near/below freezing expected for many locations tonight and Saturday night.
343 AM CDT Sat Apr 20 2024 - Below normal temperatures today into tonight with widespread freezing conditions again tonight.
1134 PM MDT Fri Apr 19 2024 - Freezing Drizzle and Dense Fog will be the main concerns tonight especially between Cheyenne and the I-80 Summit.
Clearing of the clouds is working south-southeast steadily early this morning and clearing will continue to progress thru mid morning with all areas anticipated to see the lower clouds out of the area.
223 AM EDT Sat Apr 20 2024 A cold front will cross the region early today, and then settle just to our south late today.
117 AM EDT Sat Apr 20 2024 A secondary cold front will move through the area late tonight into Saturday.
216 AM EDT Sat Apr 20 2024 Moisture increases into Saturday as a cold front moves toward the area.
Daytime temperatures will look to recover today as the upper-level trough pushes further east, carrying the coldest mass of air along with it. Nighttime temperatures will still likely drop near or below freezing for most, leading to the third night in a row of potential impact for susceptible vegetation. As temperatures warm, RH values will bottom out in the low-mid 20s, elevating fire weather concerns.
(Today through Sunday Night) Surface obs this morning show cool, dry air across Middle TN in the wake of yesterday's cold front.
1236 AM CDT Sat Apr 20 2024 (Tonight) The cold front has now moved SE of the central TN Valley this Fri evening, with lingering convection tapering off to the south over central AL. These lower dew pts will continue to drift southward overnight, allowing lows into early Sat to fall mainly into the lower/mid 50s.
Near-freezing temperatures are forecast Saturday and Sunday morning for far northern Missouri.
There'll be some very nice days mixed in with some cooler, showery, windier days. Sunday an upper level low moves across southern Canada quickly and compresses the ridge over the region south. The trailing surface cold front with this system will cause some more showers and a cool down to about 5 degrees below average.
An area of mid-level clouds along the northern NV border is marking the passage of a weak upper trough through the northern Great Basin. Saturday will be warmer with periods of high clouds. A ridge of high pressure will build into the region through the day, bringing clear conditions, warm daytime highs, and low overnight temperatures. Temperatures will be slightly cooler on Sunday, as upper level zonal flow takes over.
An upper level trough will be centered across southern California and western Arizona this evening. The aforementioned upper level trough will slowly approach the forecast area on Saturday. The highest totals look to be across the Big Country. Highs will be in the mid to upper 50s across the Big Country to the low to mid 60s across most of the rest of the region.
1225 AM CDT Sat Apr 20 2024 - A Freeze Warning for temperatures at or below freezing is in effect tonight into Saturday morning for portions of south central Nebraska. - Temperatures near or below freezing are possible (70% chance) for much of the forecast area again Saturday night into Sunday morning.
Discussion: A cold front is currently located on the leeward side of the Appalachians. Lastly, temperatures will be slightly below normal behind the cold front, around 5 degrees below normal.
1218 AM CDT Sat Apr 20 2024 (This evening through Saturday night) A fairly broad upper level trough is currently moving east through the Great Lakes. The southern side of this feature is relatively flat at this time which is why the associated cold front is struggling to make southward progression. Saturday will be similar to today as the trough continues east of the Great Lakes with the base of the trough still quite flat without much southward movement. The cold front will be basically crawling south into the CWA Saturday. Highs will be limited by slightly cooler air north of the boundary and clouds to the south of it.
Quiet weather continues for our Saturday as a ridge of high pressure passes over eastern Idaho. Even in the higher elevations we'll push into the low 50s. These warmer temperatures make it farther east on Sunday with the valleys of the Southern Hills approaching the low 70s with most of the Snake Plain in the mid to upper 60s. Also on Sunday, a low travels across Canada and weak troughing dips just far enough southward to push our ridge of high pressure farther east. This weak troughing/more zonal flow will open the door for some precipitation on Sunday, though it looks limited to the Central Mountains and Eastern Highlands at this point with only about a 20 percent chance of showers at that.
622 AM CDT Sat Apr 20 2024 (Today through Sunday Night) Surface obs this morning show cool, dry air across Middle TN in the wake of yesterday's cold front.
A weak front will push into the region Saturday and flatten the ridge Saturday night into Sunday.
515 AM MDT Sat Apr 20 2024 - Isolated to scattered mountain showers continue today before drier and warmer conditions move in for Sunday.
All sites will be breezy this afternoon into tonight with wind gusts between 20-30 kts (>60% confidence)as the cold front moves across the region.
High pressure over the Great Basin will build into Utah and southwest Wyoming by this evening, bringing dry conditions and very mild temperatures.
633 AM CDT Sat Apr 20 2024 (Today) Dense cloud cover remains in place in wake of a cold front that is currently stalled just to the southeast of the area. These clouds are currently keeping temperatures relatively mild this morning with 08z readings still in the low to mid 60s in spite of the northerly flow attempting to advect in a cooler air mass. Otherwise it will remain mostly dry and much cooler than yesterday as highs will struggle to climb above the 65-70 degree range.
613 AM CDT Sat Apr 20 2024 - Temperatures are expected to drop to or below freezing this morning and tomorrow night.
The bulk of this rainfall should occur from this afternoon through early Sunday morning before the primary trough axis finally pivots overhead and gradually brings an end to the rainfall.
Warmer air will slowly move into Central MT over the next few days.
612 AM CDT Sat Apr 20 2024 - Below freezing temperatures are expected again tonight into Sunday morning, potentially creating some frost/freeze concerns across portions of the area.
723 AM EDT Sat Apr 20 2024 (Today through Sunday) Persistent ridging over the Gulf of Mexico will begin to erode today as a broad mid-level trough moves across the southeastern US. Temperatures this afternoon and tomorrow could reach the low-mid 90s over the interior and southwest FL.
Drier and cooler conditions expected Sunday afternoon after frontal passage.
After a cold start this morning, afternoon temperatures will be around 10-15 degrees warmer than the last several days, but still around 5-10 degrees below seasonal averages for late April. Hoenisch Warmer air will slowly move into Central MT over the next few days.
947 AM EDT Sat Apr 20 2024 High pressure remains in control of the weather pattern this morning bringing mainly dry conditions to the region. (Today through Sunday) Persistent ridging over the Gulf of Mexico will begin to erode today as a broad mid-level trough moves across the southeastern US. Temperatures this afternoon and tomorrow could reach the low-mid 90s over the interior and southwest FL.
357 AM MDT Sat Apr 20 2024 Warmer air will slowly move into Central MT over the next few days.
Another round of rain is expected early on Sunday, but the bulk of the coverage looks to stay north of the Highway 84 corridor in the morning.
Closer to home, upper level lift from an exiting jet max has given way to scattered rain showers across western Kansas with a subtle backdoor cold front advancing through northern Kansas. By this evening and into Sunday morning, surface ridging builds in from central Nebraska, increasing subsidence and drier air aloft. Clouds clearing from northeast to southwest will take place overnight into Sunday morning that could lead to areas in northern Kansas seeing lows approach freezing. With ridging overhead, light winds and sufficient surface moisture, scattered areas of frost could develop and pose a risk to sensitive vegetation, especially in low-lying areas.
- Below normal temperatures today into tonight with widespread freezing conditions again tonight.
507 AM CDT Sat Apr 20 2024 (Today through Sunday afternoon) WV imagery shows the west coast trough has made landfall, moving through SoCal/Arizona and approaching West texas and Southeast new Mexico, leaving the area under southwest flow aloft. At the surface, a secondary cold front is pushing into the area, and this should result in highs today ~ 9-10F cooler than yesterday's as CAA behind the front continues in northeasterly flow. Meanwhile, area radars show convection developing in the lower Trans Pecos, and this activity is still forecast to spread west and north today as the front moves farther southwest and large- scale ascent commences w/the arrival of the west coast trough. As the trough arrives, mid-level lapse rates increase to 7C/km or better, so a hail threat will be present.
However, will see some activity mainly over the northwestern CWA in closer proximity to the trough and in the Coastal Plains where low- level moisture is highest. Rainfall activity will pick up in coverage and intensity by the afternoon hours as the base of a weak upper trough axis approaches the area. In the southeast, the front will lift north a bit as a warm front and lead to some higher values of surface based instability there for some storms to be rooted in the boundary layer. Think the higher risk for today into the evening will be threat for locally heavy rainfall. Lows Saturday night will be on the cooler side, in the upper 40s to near 60.
Temperatures will be a few degrees cooler than normal today with highs in the 60s. Cooling north winds will continue through the rest of the weekend with lows tonight in the 40s and cooler highs for Sunday in the mid 50s to lower 60s.
618 AM CDT Sat Apr 20 2024 (Today through Sunday Night) Cool temperatures are in place across the area this morning with the cold front south of the state. Precip will come to an end by mid-day Sunday as an H500 trough moves south toward Arkansas from the Central Plains. Sfc ridging will build south toward the area as well and cooler, dry air will be seen. As the ridge settles over the state by Sunday night, winds will go calm and sky conditions will become clear.
Upper level ridging is displaced into South America. Surface observations and VIS/IR imagery suggest a small high pressure system northeast of the Bahamas supports gentle east to southeast breezes across the Florida Keys this morning. Temperatures are in the lower 80s and on their way to the mid 80s this afternoon. High pressure over the western North Atlantic will maintain gentle to occasionally moderate east to southeast breezes across the Florida Keys coastal waters through the weekend.
330 AM MDT Sat Apr 20 2024 - Isolated to scattered mountain showers continue today before drier and warmer conditions move in for Sunday.
(Rest of today through Sunday) Broad mid level ridging that has been in place across South Florida will gradually continue to break down through the rest of the weekend. This is in response to a deepening mid level trough digging southeastward through the Plains and eventually into the Southeast. At the surface, a broad area of high pressure will continue to push further east into the Atlantic as a frontal boundary remains draped across the Gulf Coast States.
225 PM EDT Sat Apr 20 2024 A mid-level ridge is over the central Gulf of Mexico this afternoon with weak troughing east of Florida, and this pattern is keeping a northwest flow aloft over the local area. At the surface, high pressure remains centered over the western Gulf of Mexico.
Expect areas north of I-40 to top out in the low 60s, with mid 50s to low 60s south of there.
334 PM EDT Sat Apr 20 2024 An upper level trough with unseasonably cold air aloft will swing through eastern Canada and the northeastern states late this afternoon and Sunday, resulting in cooler and breezy conditions.
The subtropical ridging is displaced well to the south into South America, with weak westerlies covering the Caribbean. High pressure centered northeast of the Bahamas supports gentle southeast breezes across the Keys this afternoon. The low-level ridging will recede to the east tonight through Sunday as lower heights spread southeast into the Mississippi and Ohio River Valleys.
The center of high pressure that has been coming our way from Canada this weekend will settle over the Mid South.
1226 PM CDT Sat Apr 20 2024 - Temperatures are expected to drop to or below freezing this morning and tomorrow night.
The lowest dewpoints have been along and south of the highway 2 corridor, while the warmest temperatures have been over southeast North Dakota. Putting these together, the lowest humidity readings have been over southeast North Dakota. Highs still look about 10 degrees warmer than today, with similar dewpoints.
(Now through Sunday) A positively tilted upper trof over the northern Plains and extreme northeast states evolves into a more meridionally oriented upper trof over the eastern half of the CONUS. Lows tonight mostly range from the upper 40s/around 50 well inland to the lower 60s at the coast. Highs on Sunday range from the lower 60s inland to the lower 70s at the coast.
High pressure begins to build in from the west overnight Sunday. A cooler and drier airmass will settle across north and central GA Sunday night.
324 PM CDT Sat Apr 20 2024 - Tonight could be the last night of freezing weather for the foreseeable future.
Cooler temperatures expected tonight and Sunday with troughing over the area. Low pressure system south of our region will produce some cloud cover and light rain showers Sunday morning, mainly for southern counties. By Sunday afternoon, this area of low pressure will be moving east of our region with clearing conditions and drier weather area- wide. Temperatures remain cooler than normal with longwave troughing across the Southern Appalachians and Tennessee Valley.
219 PM MDT Sat Apr 20 2024 - Freezing fog and light to moderate snowfall will be the main concerns through mid-afternoon across the South Laramie Range, Cheyenne Ridge, and southern Nebraska panhandle. Roadways may be slick, especially bridges and overpasses.
1135 AM MDT Sat Apr 20 2024 - Isolated to scattered mountain showers continue today before drier and warmer conditions move in for Sunday.
(This evening through Sunday) Satellite and radar imagery are telling the story this afternoon showing a clear mid/upper level trough moving eastward across New Mexico with lift out ahead of it resulting in showers and thunderstorms now almost entirely east of the I-27 corridor. Will have to watch the area between the western edge of precip and the trough itself for any additional attempts to precipitate late this afternoon, but by 00Z only the eastern third of the forecast area should be under any threat for showers and storms, and by 03Z all meaningful lift should be east of the forecast area. In fact, with the trough shifted east of the area by then there should be mid/upper level subsidence.
357 PM EDT Sat Apr 20 2024 Showers and thunderstorms this evening will accompany a cold front which will stall to our south tonight. Low pressure developing along this front should lead to widespread rain Sunday.
125 PM EDT Sat Apr 20 2024 An upper level trough with unseasonably cold air aloft will swing through eastern Canada and the northeastern states today and Sunday, resulting in cooler and breezy conditions.