Aikyam-Lab/Synoptic-Bench huggingface dataset:
327 PM EDT Mon Apr 26 2021 The afternoon surface analysis shows high pressure off to the southeast. This high will push off the Atlantic coast tonight. Meanwhile, a 500mb ridge will transition east out the middle part of the CONUS leading to continued height rises in the Ohio Valley, as an anomalously deep mid-level trough axis digs towards the Baja Peninsula. Sensible weather will feature mostly clear skies tonight under high pressure. This will lead to some valley fog and ridge/valley temperature splits. The lows will drop into the mid to upper 40s in the eastern valleys and upper 40s to lower 50s on the ridges. The afternoon will feature highs in the low to even mid 80s. Expect perhaps just a touch of ridge/valley split in temperatures developing in the early evening.
233 PM EDT Mon Apr 26 2021 High pressure will move off the southeast coast tonight leading to a milder southwest flow of air through the middle of the week.
Morning radar shows showers across Malheur County into the Treasure Valley and Owyhee Mountains of southwest Idaho, while satellite imagery shows the circulation center of an upper low in Harney County/OR, shifting slowly east. By then the upper low will be in north-central Nevada. From there the low will turn south and weaken.
A large and broad upper ridge located mostly over the central states amplifies while shifting into the eastern states ahead of a upper trof developing over the western states. Lows tonight are expected to range from the low to mid 50s inland to the lower 60s at the coast. Highs on Tuesday range from around 80 near the coast to the lower to mid 80s inland (with perhaps a few upper 80s over south central Alabama east of the I-65 corridor.
Amplifying upper trough with a trough moving through the Wrn CONUS will bring continued breezy and humid conditions through the short term. The increase moisture loading will also reduce the diurnal temperature range in the short term with warmer mins the next two mornings and lower maxes for Tuesday afternoon. Thus the severe threats will remain the higher concern in the short term, with heavy rain emphases coming in afterwards.
Tomorrow & Tomorrow Night, Thoughts & Storm Chances? A upper level trough moving out of the Rockies will bring height falls to the Plains tomorrow. Meanwhile at the surface we should see a lee trough to develop over the High Plains of Colorado and a surface front draped across eastern Nebraska. This could come in the form of continued height falls and/or the lee trough drifting east tomorrow night.
Some of the cooler areas in the northeast and eastern areas may actually rise should the warm front nudge that far north. The NAM is 3 hours faster and thus cooler on high temps.
The relative humidity is in the lower 20s but the winds are fairly light due to the boundary in the vicinity. As the main upper trough/low moves into the area during the afternoon, there will be a chance for showers and thunderstorms mainly during the afternoon and evening. Since the upper low does not move in until closer to evening that will have to be what keeps the storms going once they lose the front and the pool of stronger instability near the front.
337 PM CDT Mon Apr 26 2021 A winter weather advisory is in effect mainly for the higher elevations near the North Shore. Elsewhere a mix of rain, freezing rain and snow have been reported.
The airmass will remain mixed allowing temperatures to be warmer than normal. A deep positively tilted upper level trough of low pressure will slowly approach the region, and begin forcing showers and thunderstorms Tuesday night.
After another cool night, a warming and drying trend will begin with a high pressure ridge nosing in on Tuesday.
245 PM CDT Mon Apr 26 2021 Strong low pressure in sw Nebraska with a stationary front from the low northeast into nw MN.
116 PM PDT Mon Apr 26 2021 Low pressure will linger through Tuesday bringing isolated to scattered showers and below average temperatures.
Temperatures will continue to climb another couple of degrees this afternoon with most places touching the low 80s. The mixed low level airmass should help temperatures stay rather mild tonight, with overnight lows only dipping into the low 60s. Winds turning more to the southwest compared to today should allow for an even warmer airmass to enter the region. In general, have favored the clouds being thin enough and arriving late enough to warm us back into the low to even mid 80s tomorrow.
As the high pushes east, it is building southward, leading to enhanced winds. Lastly high cirrus are rounding the upper level ridge that sits over the western Gulf of Mexico, making for a hazy Pink Supermoon this evening. Thereafter, the high will slowly trek towards Bermuda through the middle of the week.
A low pressure system continues to track through the area tonight, with showers continuing to weaken and slowly push to the south through the night. Tuesday will bring warming and clearing as high pressure builds aloft.
Strong low pressure in sw Nebraska with a stationary front from the low northeast into nw MN.
847 PM CDT Mon Apr 26 2021 A deep trough continues to dig over the western CONUS with broad southwesterly flow aloft. Pressure falls in the Central Plains will enhance the low-level jet tonight which will keep southerly winds up in the 10 mph range overnight.
Dry and much warmer weather returns beginning Tuesday. High temperatures today, though warmer than yesterday, are still forecast to top out around 5-15 degrees below normal. High pressure builds back in over Northern California tomorrow with high confidence in ensemble guidance that ridging will continue through the week. Dry conditions return to the area with slightly breezy north winds tomorrow as the upper trough moves into Southern California.
948 PM EDT Mon Apr 26 2021 High pressure overhead will slide off the East Coast on Tuesday.
A few areas have dipped into the middle 60s in northeast AL, where overnight lows will be in the lower to middle 50s. The upper level ridge axis will move overhead on Tuesday. With these elevated heights and increasing southerly flow leading to more robust warm air advection, expect highs will easily climb into the low 80s.
Southerly flow in the low levels of the atmosphere will help to draw low level moisture northward overnight from the SE TX and S LA Gulf Coast and this will result in a return to MVFR ceilings overnight, beginning at the LFK/TYR and GGG terminals, followed by the TXK/SHV and eventually the ELD and MLU terminals. Look for S to SE winds overnight near 6-12kts with the higher sustained speeds likely at the TYR terminal.
637 PM CDT Mon Apr 26 2021 Updated for 00Z aviation discussion 00Z TAF discussion: VFR in the immediate term, with light winds generally out of the S/SE as high pressure ridging slides to the east. Tonight and Tuesday: Mostly thin cirrus continues to stream overhead overtop the mid level ridge over the MS valley. At the surface, high pressure center looks to have shifted east into AL with southerly winds now over the western periphery. Tuesday will be another warm day with southerly winds and mid level ridge passing overhead, but increased cloud cover in the west may play a role in preventing maximums from reaching their full potential.
857 PM EDT Mon Apr 26 2021 With high pressure dominating, the forecast appears to be on track with no major updates required this evening. Tomorrow morning should start out in the low 60s and the highs are expected to reach the mid to upper 80s.
Dewpoints in the lower 60s are expected to surge into the FA after 06Z. sticking with that solution, and updating the hourly grids to reflect a slightly warmer trend. Prior discussion below: Tonight and Tuesday: Mostly thin cirrus continues to stream overhead overtop the mid level ridge over the MS valley. At the surface, high pressure center looks to have shifted east into AL with southerly winds now over the western periphery. Tuesday will be another warm day with southerly winds and mid level ridge passing overhead, but increased cloud cover in the west may play a role in preventing maximums from reaching their full potential.
Isolated showers will remain possible across the higher terrain of the interior this evening.
722 PM EDT Mon Apr 26 2021 High pressure over the mid-Atlantic region will shift off the Carolina coast on Tuesday.
The low deck will linger into mid day Tuesday before lifting back VFR.
525 PM EDT Mon Apr 26 2021 High pressure over the mid-Atlantic region will shift off the Carolina coast on Tuesday.
A high pressure to the northeast of the local area will keep dry and light winds tonight and Tuesday. Temperatures will drop to the lower 60s across the interior and will stay in the mid 60s along the coast. Thanks to the east breeze, temperatures will be a few degrees cooler on Tue where highs in the lower 80s are expected with a few mid 80s across Lake county under partly cloudy skies.
739 PM EDT Mon Apr 26 2021 High pressure will move off the southeast coast tonight leading to a milder southwest flow of air through the middle of the week.
Scattered shower potential persists areawide overnight and through Tuesday afternoon, with measurable rainfall in excess of a tenth of an inch possible over the higher elevations of Lincoln and Mohave counties.
A large and broad upper ridge located mostly over the central states amplifies while shifting into the eastern states ahead of a upper trof developing over the western states. Lows tonight are expected to range from the low to mid 50s inland to the lower 60s at the coast. Highs on Tuesday should range from around 80 near the coast to the lower to mid 80s inland (with perhaps a few upper 80s over south central Alabama east of the I-65 corridor.
A building upper ridge will provide mostly clear skies and our warmest temperatures of the year over the next couple of days.
957 PM CDT Mon Apr 26 2021 Updated the forecast to cancel the Red Flag Warning and to adjust wind speeds, essentially increasing the difference between lighter winds near the approaching cold front and increasing winds ahead and behind. The relative humidity is in the lower 20s but the winds are fairly light due to the boundary in the vicinity. As the main upper trough/low moves into the area during the afternoon, there will be a chance for showers and thunderstorms mainly during the afternoon and evening. Since the upper low does not move in until closer to evening that will have to be what keeps the storms going once they lose the front and the pool of stronger instability near the front.
1052 PM EDT Mon Apr 26 2021 High pressure will prevail most of this week. A cold front could bring impacts to the region late in the week. Sfc temps should dip into the low- mid 50s away from the coast and into the low-mid 60s at the beaches.
An upper level trough that was over the region early Monday will exit the region tonight, to be replaced by a ridge of high pressure that will remain into the latter half of the week.
519 PM MDT Mon Apr 26 2021 Upper low across the western CONUS will slowly drift east into the southern Plains over the next couple of days. There could be snow showers across the higher Black Hills late tonight into Tue morning, but any accumulations will be light.
625 PM EDT Mon Apr 26 2021 High pressure overhead will slide off the East Coast on Tuesday.
600 PM EDT Mon Apr 26 2021 Dry high pressure will move to just off the southeast coast giving our region a warm southerly flow through mid week.
Upper level low over northern Nevada continues to wrap some moisture back into southeast Oregon but will remain south of the forecast area.
715 PM CDT Mon Apr 26 2021 A winter weather advisory is in effect mainly for the higher elevations near the North Shore. Elsewhere a mix of rain, freezing rain and snow have been reported.
855 PM MDT Mon Apr 26 2021 Last update for this evening to let the remainder of the High Wind Warning expire for the Arlington/Elk Mountain area. Cold front pushing into the northern Panhandle this afternoon. upper level low slowly moving into northern nevada at this time.
Will maintain the low chances for rain into the overnight and Tuesday morning mainly along and south of I94 border. For northeastern ND and far NW MN, there are considerable breaks in the lower level cloud cover but high clouds will be present into tonight. Mild and tranquil day Wed will be followed by an advancing cold front slated to enter Devils Lake Basin region sometime around sunset.
As of 20Z Monday afternoon, a longwave midlevel trough was advancing eastward across the southwest US. Otherwise, a quiet night is expected with lows reaching the low to mid 60s. Afternoon temperatures may be a degree or two cooler than today due to an increase in midlevel cloudiness.
822 PM EDT Mon Apr 26 2021 High pressure will prevail most of this week. A cold front could bring impacts to the region late in the week. Sfc temps should dip into the low-mid 50s away from the coast, with even some upper 40s possible across northern Berkeley County should high clouds clear and/or become thin late tonight. Lows should range in the low-mid 60s at the beaches.
1009 PM EDT Mon Apr 26 2021 High pressure overhead will slide off the East Coast on Tuesday.
No changes to the forecast this evening as a large high pressure ridge dominates the Southeast. As the high shifts slowly east, the warming trend will continue with lows in the 50s tonight and highs tomorrow in the 80s. VFR conditions will prevail through the next 24 hours at all TAF sites as high pressure remains in control. Diegan Chattanooga Airport, TN 84 63 85 64 83 / 0 10 0 0 40 Knoxville McGhee Tyson Airport, TN 83 62 83 63 82 / 0 0 0 0 40 Oak Ridge, TN 83 62 82 62 81 / 0 10 0 10 40 Tri Cities Airport, TN 81 56 81 59 81 / 0 0 0 0 30.
335 AM EDT Tue Apr 27 2021 High pressure offshore will maintain a warming trend this week.
For fire weather concerns, the lowest dewpoints are expected across the far western zones. However, a reservoir of higher dewpoints will pool along and behind a cold front across southwest Nebraska into northwest Kansas. Much cooler highs are expected in the wake of the departing synoptic low. Wrap around moisture and clouds will result in cooler highs. Dewpoints will continue to remain on the low side as the dry air prevails. Some good news is that the fire danger for Wednesday is expected to be significantly less as cooler air advects in across the fire district.
Also of note, portions of the Prairie Coteau and central SD is observing fog given the high humidity and light wind environment. As the low pressure system and upper-level jet energy only slowly shifts eastward today, the potential for continued unsettled weather conditions will continue through much of the day.
Fair weather is expected to continue through tonight with ridging aloft. Highs are generally expected to be in the mid 80s with overnight lows in the low to mid 60s.
A broad upper ridge axis sits over the southeast currently, and large scale subsidence will keep dry conditions over the area today. An upper low will track across Texas on Wednesday, and then details become a little more murky beyond this point. The GFS solution phases the upper low into the deeper trough, while the ECMWF separates the upper low from the parent trough, keeping the better forcing to our north.
Strong low pressure in sw Nebraska with a stationary front from the low northeast into nw MN. Discussion: Weather is expected to be active to start the period as southwest flow with a large upper low located over the SW CONUS. Â At the same time a cold front will slowly sag south across the area through Wednesday.
An upper ridge over the eastern states gradually begins to spread into the western Atlantic during the period as a western states upper trof advances to extend from the northern and central Plains to New Mexico/western Texas by Wednesday afternoon. While this allows for a gradual return of deep layer to the region, subsidence associated with the upper ridge will prevent convective initiation, and a dry forecast continues through the period. Lows tonight will mostly range from the mid 50s inland to the lower 60s at the coast, then milder temperatures follow for Tuesday night when lows range from the lower 60s inland to the mid 60s at the coast. Highs on Tuesday and Wednesday range from around 80 near the coast to the lower to mid 80s inland, and some spots inland may reach the upper 80s on Wednesday.
350 AM EDT Tue Apr 27 2021 Upper ridging takes firm residence today, as strengthening low level southwest flow effectively shifts a surface warm front now looming just upstream across the local area. Advent of strong warm air advection across the lowest 4000ft nets a solid 30 degree diurnal temperature response off readings noted early this morning. Warm front stalls near Saginaw Bay, leaving those locales (Bay county, northern thumb) susceptible to a cooler environment should the boundary meet resistance from emerging onshore flow/lake breeze activity.
1226 AM EDT Tue Apr 27 2021 Warmer and dry conditions continue until the approach of a cold front late on Wednesday. Quiet weather continues this evening and overnight with building high pressure.
1010 PM CDT Mon Apr 26 2021 A winter weather advisory is in effect mainly for the higher elevations near the North Shore. Elsewhere a mix of rain, freezing rain and snow have been reported.
/issued 847 PM CDT Mon Apr 26 2021/ A deep trough continues to dig over the western CONUS with broad southwesterly flow aloft. Pressure falls in the Central Plains will enhance the low-level jet tonight which will keep southerly winds up in the 10 mph range overnight. Global models maintain a consistent track with the trough in the polar jet but the GFS (and most of the GEFS members) remains an outlier late week.
Tomorrow morning should start out in the low 60s and the highs are expected to reach the mid to upper 80s. Deep layer ridging will maintain fair weather and warmer than normal temperatures through this period.
Dry weather conditions will be in place all through today and into Wednesday morning as high pressure ridging from out of the northeast continues to cover southeast Georgia and northeast Florida. High temperatures for today will reach up into the lower to mid 80s for inland areas and in the upper 70s along the coastline and areas affected by the afternoon sea breeze.
358 AM CDT Tue Apr 27 2021 An upper lvl trough over western CONUS will progress eastward into the Desert SW this afternoon. Thu a cold front will dive into the area dropping temperatures momentarily into the 70s across the region. A beastly upper lvl ridge will settle over SoCal keeping our area in upper lvl NW flow. The low-level thermal ridge will extend from the NW PB into Trans Pecos with alignment of gusty winds 30-35 mph on windward side in SE NM.
133 AM EDT Tue Apr 27 2021 High pressure offshore will maintain a warming trend this week.
Today Through Wednesday Night A large upper ridge is over the eastern two thirds of the country this morning with an upper low over the west. This upper ridge will be centered over the east coast tonight with southwest flow becoming enhanced over Arkansas. The upper low will be over the desert southwest tonight and moves into north Texas Wednesday night.
Under mostly cloudy skies, expect max temps today to range from the lower 40s near Lake Superior to the upper 40s to lower 50s elsewhere. Models suggest that a gradually progressive pattern will prevail with troughing over the western CONUS shifting into the east by the end of the week. A transition toward zonal flow is then expected through the weekend before another trough moves into the west.
The trough is proceeding eastward, and continuing to bring snow to the Bighorn Mountains, and rain showers to lower elevations across south central and eastern zones. Showers are expected shift east and south through the remainder of the morning, as the trough shift east. Upper level ridging developing in the west will nose into the region, generally keeping northwest flow in place. That said, there is a batch of cold air associated with a clipper type cold front dropping south out of Canada on Wednesday afternoon/evening. Temperatures will trend warmer today and Wednesday, with most of the area seeing dry conditions through the day. Gilstad Late week warm weather on track as upper level ridging over the PacNW builds towards Montana and Wyoming and northwest flow aloft favors development of leeside troughing along the central zones.
1202 AM EDT Tue Apr 27 2021 High pressure offshore will maintain a warming trend this week.
This will create much warmer temperatures today and copious moisture advection.
Guidance diverges heading into the weekend on trough evolution. with the deterministic GFS and GFS/ECMWF ensemble solutions depicting the trough progressing across the Southeast on Sat-Sun. and the deterministic ECMWF depicting the base of the trough becoming cut off from the main flow over the south-central U. Highs in the mid/upper 80s today-Wed will warm into the upper 80s/lower 90s by Thu-Fri, while lows warm from the lower/mid 60s into the upper 60s/lower 70s.
Warming trend to continue through Wednesday, with dry conditions as high pressure remains in the general vicinity. As the high moves east today, the overall pattern will begin to shift to a more southerly flow from the southeasterly flow we have right now.
High pressure was located off of the North Carolina coast and will keep dry weather over the region today. Temperatures will be on the warm side today with highs in the lower 80s.
A building upper ridge will provide mostly clear skies and our warmest temperatures of the year over the next couple of days. Highs today may touch 80 degrees in a few places, but Tuesday and Wednesday will be warmer with highs in the mid 80s.
Tomorrow & Tomorrow Night, Thoughts & Storm Chances? A upper level trough moving out of the Rockies will bring height falls to the Plains tomorrow. Meanwhile at the surface we should see a lee trough to develop over the High Plains of Colorado and a surface front draped across eastern Nebraska.
A cold front moving in from the northwest will bring increasing chances for showers and thunderstorms Tuesday night and Wednesday. We remain firmly in the warm sector on Tuesday, when an initial wave of low pressure tracks into IA. Wednesday is shaping up to be the most active weather day of the week as the cold front settles into the region.
1035 PM MDT Mon Apr 26 2021 Upper low across the western CONUS will slowly drift east into the southern Plains over the next couple of days. There could be snow showers across the higher Black Hills late tonight into Tue morning, but any accumulations will be light. Late in the week, upper ridging will build across the western CONUS into the northern Great Plains.
409 AM EDT Tue Apr 27 2021 Another beautiful early summer day is on tap with mostly clear skies and temperatures in the low to mid 80s with cooler temperatures in the higher elevations of the GA mountains. As a trough approaches out of the SW tomorrow an influx of moisture into the upper atmosphere will bring high level clouds to the area but the best chance for precip will remain well north of us for the short term.
After a cool night, temps should rebound nicely Tuesday as a cold front over the Canadian Prairies slowly sink south. Look for temps to be about 10 degrees warmer than today as the warming trend begins. TFJ Clouds will clear out of the region tonight as a large ridge of high pressure begins to work its way into the region. This will bring significantly warmer temperatures to the region for the remainder of the week.
1129 PM MDT Mon Apr 26 2021 Last update for this evening to let the remainder of the High Wind Warning expire for the Arlington/Elk Mountain area. Cold front pushing into the northern Panhandle this afternoon. upper level low slowly moving into northern nevada at this time.
1238 AM CDT Tue Apr 27 2021 A winter weather advisory is in effect mainly for the higher elevations near the North Shore. Elsewhere a mix of rain, freezing rain and snow have been reported.
940 PM PDT Mon Apr 26 2021 A cold upper level trough will bring scattered showers through Tuesday. It will remain quite cool through Tuesday before winds turn offshore and warmer weather returns.