Aikyam-Lab/Synoptic-Bench huggingface dataset:
647 AM CDT Tue May 2 2023 Summary: The area of low pressure that has been plaguing the area will finally move to the east today as high pressure begins to build in. Vertically stacked low pressure was located just north of Georgian Bay with high pressure in control across the Plains. An omega blocking pattern remains in place aloft and the low to our east will continue to slowly creep to the southeast over the next few days. Dry and cooler conditions are expected across the remainder of northwest Wisconsin today with breezy winds. High pressure will build in for Wednesday as temperatures warm into the 50s and 60s. Weak onshore winds during the afternoon will keep temperatures cooler near Lake Superior, however.
It is another GORGEOUS day out there today with low humidity (dew points in the low to mid 60s) and temperatures in the mid to upper 70s. The Florida Keys remain sandwiched in between two strong synoptic scale systems with a strong ridge over the Caribbean centered south of Hispaniola and Puerto Rico with a closed vertically stacked low pressure system centered over the Great Lakes area.
558 AM CDT Tue May 2 2023 (Today) Low pressure system centered over the Great Lakes region is expected to remain in place for one more day.
530 AM EDT Tue May 2 2023 Cold cyclonic flow is expected to maintain MVFR cigs through the taf period as low pressure swings through Lake Huron. Relentless high amplitude troughing ensures another 24 to 36 hours of cold and unsettled conditions prevail throughout Southeast Michigan. Governing closed low now featured over Ontario will briefly retrograde before ejecting southeast during this time, as another substantial lobe of vorticity pivoting cyclonically around the northwest flank of this system repositions and strengthens the height fall center. A marginal freezing level maintains the possibility for some inconsequential snow showers to mix in at times. Deep layer northerly flow still entrenched Wednesday as the lower height field begins the slow eastward release.
621 AM CDT Tue May 2 2023 (Today and tonight) Currently we have mid and upper level clouds streaming across the region as subtropical moisture rides up and over the ridge in the area. With southwest flow edging into the area from the west, a few late afternoon and evening thunderstorms are expected to develop over the higher terrain to our west.
424 AM CDT Tue May 2 2023 Summary: The area of low pressure that has been plaguing the area will finally move to the east today as high pressure begins to build in. Vertically stacked low pressure was located just north of Georgian Bay with high pressure in control across the Plains. An omega blocking pattern remains in place aloft and the low to our east will continue to slowly creep to the southeast over the next few days. Dry and cooler conditions are expected across the remainder of northwest Wisconsin today with breezy winds. High pressure will build in for Wednesday as temperatures warm into the 50s and 60s. Weak onshore winds during the afternoon will keep temperatures cooler near Lake Superior, however.
718 AM EDT Tue May 2 2023 (Today through Wednesday) A large closed low over the eastern Great Lakes Region will slowly drift southeast to a point just off the Northeast coast by Wednesday evening. Highs are forecast to reach the upper 80s to lower 90s, with overnight lows ranging from the upper 60s along the coasts to the lower 60s across the interior.
06z surface data has deep low pressure in the Ontario Province with a strong high over the northern Plains. These low RH values combined with the wind and somewhat warmer temperatures 'could' result in a stealth fire weather day. When the low RH values, near full sun, wind and temperatures are taken into account, all would aid in drying out vegetation (especially grasses). Tonight, quiet but chilly conditions will be seen has high pressure builds into the Midwest.
500 AM MDT Tue May 2 2023 Current surface map places high pressure across the Dakotas. Upper ridge, part of Omega block, is located over the Northern Plains. Upper ridge weakens Wednesday as western CONUS trough slowly advances eastward. Slow eastward progression of upper trough continues for the end of the week into the weekend, resulting in daily chance of showers/thunderstorms.
616 AM CDT Tue May 2 2023 (Tonight through Wednesday night) More quiet weather in the short term forecast with mid-level ridging remaining in place. We'll see increased cloud cover and in turn, cooler temperatures today. A pool of (at least compared to yesterday) substantially cooler 850MB temps is noted today and tomorrow at 13-15C. Expect a weak to moderate southeasterly flow today with a more easterly flow tomorrow while a weak coastal trough tries to develop. High temperatures both days range from the low 80s east to the upper 80s west.
A closed, upper level low continues to spin over the northeastern United States. At the surface, while a front meanders offshore over the northern Gulf of Mexico, high pressure will persist over the ArkLaTex and Lower Mississippi River Valley regions through midweek. Like yesterday, we will need to monitor fire weather both today and Wednesday, as relative humidity values plummet into the lower to mid 20 percent range for many spots.
Ridging will bring warmer weather today and Wednesday with isolated thunderstorms along the Cascades.
806 AM CDT Tue May 2 2023 Temperatures have climbed above freezing this morning and the freeze warning for today has been cancelled.
(Through tonight) The upper-level troughing pattern, centered over the Great Lakes region, continues to hold for the near term. Temperatures this afternoon are expected to be in the upper 70s/low 80s north of I-10, and in the low 80s south of I-10. Expect temperatures tonight to be in the low to mid 50s, with the warmest temperatures closer to the coast.
501 AM MDT Tue May 2 2023 Omega block holding strong with upper lows over the Great Lakes and California coast.
851 AM EDT Tue May 2 2023 Forecast remains on track as cool frontal boundary continues to slowly drift southward through North Central Florida and trough axis remains across the SE US.
901 AM EDT Tue May 2 2023 Dry conditions across South Florida with high pressure in place. (Today through Wednesday) A large closed low over the eastern Great Lakes Region will slowly drift southeast to a point just off the Northeast coast by Wednesday evening. Highs are forecast to reach the upper 80s to lower 90s, with overnight lows ranging from the upper 60s along the coasts to the lower 60s across the interior.
A trough to our west will bring cooler temperatures and gusty winds this week.
628 AM CDT Tue May 2 2023 (Today through Wednesday) Upper air analysis this morning shows a ridge axis over Texas with the flow turning from northwesterly over the east to southwesterly over the west. The low level flow will become more southeasterly today and push the front northward as a warm front. With a cloudy start to the day, temperatures today will be a little cooler than yesterday.
Also seeing a large low pressure system spinning over the Great Lake and New England Sates. With the low pressure center well to our north, This set up will allow dry northwesterly flow to dominate the pattern through the short term.
307 PM EDT Tue May 2 2023 A strong upper level low pressure system over the eastern Great Lakes will continue to influence our weather through midweek. Several pieces of energy will pivot around the low bringing gusty winds, below normal temperatures, and mountain snow.
Given the SE flow aloft will have to monitor if any convection drifts into the lowlands during the period, but not expected currently. Ridging will bring warmer weather through Wednesday with isolated thunderstorms mainly along the Cascades.
Large synoptic blocking pattern starts to breakdown and/or shift in a way to introduce zonal to southwesterly flow into the Northern Plains lee of upper troughing in the West.
1251 PM MDT Tue May 2 2023 Water vapor shows omega block covering the lower 48, with upper low over the eastern Great Lakes, ridge over the Plains, and upper low along the CA coast. At the surface, ridge is centered over the central Dakotas with return flow across our western 2/3rds of zones. Thermal ridge crosses the region Wednesday with temps soaring into the 80s for most plains locations.
234 PM CDT Tue May 2 2023 Strong cyclonic flow associated with the trough of low pressure over the Great Lakes region will begin to push east tonight causing the pressure gradient to weaken. High temps today and tomorrow will remain in the low to mid 60s with lows in the low to mid 40s.
We'll see clear skies and light winds with the high in place as lows drop into the 30s for most locations. As the high shifts southeast on Wednesday, winds will go light southerly by sunrise, with a south to southwest light wind developing throughout the day. With the warmer air mass then in place, lows are expected to be a bit warmer Wednesday night, with most areas staying in the 40s.
At the surface, a frontal boundary remains draped across north Florida, with weak high pressure to its south. The upper low to our north will slowly pivot southeastward and fill in over the next few days, with heights falling just a bit over Florida.
/NEW/ /Through Tomorrow/ The main weather highlight in the short term period is the low potential for widely scattered showers and thunderstorms across portions of the Big Country toward the Red River tonight. Otherwise, increased cloud cover along the Red River should keep highs on Wednesday in the upper 70s, while abundant sunshine across Central Texas yields highs in the low to mid 80s.
Bowlan (Wednesday through Tuesday) The persistent blocking pattern will begin to break down for the middle to latter part of the week, with increasing storm chances arriving throughout the rest of the period.
247 PM EDT Tue May 2 2023 A welcome return to dry weather and warmer temperatures midweek.
1240 PM CDT Tue May 2 2023 (Tonight through Wednesday night) More quiet weather in the short term forecast with mid-level ridging remaining in place. We'll see increased cloud cover and in turn, cooler temperatures today. A pool of (at least compared to yesterday) substantially cooler 850MB temps is noted today and tomorrow at 13-15C. Expect a weak to moderate southeasterly flow today with a more easterly flow tomorrow while a weak coastal trough tries to develop. High temperatures both days range from the low 80s east to the upper 80s west.
1245 PM CDT Tue May 2 2023 Forecast continues to remain on track this morning as high pressure invades the Ark-La-Tex. Still anticipating highs this afternoon in the low 80s. Low-level southerly flow across the ArkLaTex will bring increased moisture as well as a warmer airmass to the region.
A large upper level low pressure system will remain just west of San Francisco today continuing warm southwesterly flow across the area. Clouds this morning will keep temperatures cooler but these should move north as drier air moves in this afternoon.
The highest PoPs will be across the northwest Concho Valley and western Big Country. On Wednesday, an upper level trough will be located across the western CONUS, placing West Central Texas in southwest flow aloft.
1103 AM CDT Tue May 2 2023 Forecast is on track with another quiet but cooler day. A few short waves will spin around the upper level low and track over TN but with very dry air in place they will have little to no impact on our weather. Highs on Wednesday slightly warmer in the mid to upper 60s, with highs Cumberland Plateau Region remaining in the upper 50s to around 60 degree range.
340 PM EDT Tue May 2 2023 Discussion/Marine -- Rain showers into tonight with clouds hanging on longer -- The core of the upper low that has brought us rain, snow, clouds and wind will shift from Southwest Ontario (north of Lake Huron and Lake Ontario) this evening to Pennsylvania by Wednesday evening. The low will gradually lose its grip on our weather as we move through the next 2 days as it slides away.
The upper level pattern features a closed low well to the north across the Great Lakes with westerly flow aloft across the Gulf Of Mexico and the Florida Peninsula. Dewpoints will mix out down into the low 60s this afternoon and evening in the dry airmass.
Highest wind gusts are expected in the higher elevations in the far northeast and eastern counties where winds could gust up to 35mph.
Previous Forecast Discussion: Omega block holding strong with upper lows over the Great Lakes and California coast.
Temperatures do drop again tonight into the 30s but will start to get warmer from there! The mid-level ridge moves overhead Wednesday into Wednesday night allowing mid-level flow to gradually switch to be more westerly through the afternoon hours bringing in some warmer temperatures and sending high temperatures back towards 70! In addition to the warming temperatures, it will be less windy on Wednesday with the high pressure conditions dominating as an omega block develops between the low moving towards the east coast and a second low developing just off the western coast with ridging building in between.
1201 PM CDT Tue May 2 2023 (Today and tonight) Currently we have mid and upper level clouds streaming across the region as subtropical moisture rides up and over the ridge in the area. With southwest flow edging into the area from the west, a few late afternoon and evening thunderstorms are expected to develop over the higher terrain to our west.
A short wave is spinning around the upper level low and is helping to bring cloud cover this afternoon along with some weak low level instability. We will likely see another batch of clouds later this evening into the early overnight as another short wave spins around the upper level low to our north. The upper level trough pushes east tomorrow and high pressure will influence our weather.
248 PM CDT Tue May 2 2023 (Issued 244 PM CDT Tue May 2 2023) Tonight through Wednesday night: The stubborn upper low that has plagued us the past couple of days should continue to spin over the lower Great Lakes Region into Wednesday night before exiting eastward. While ribbons of vorticity will spin over us aloft, and fetch from Lake Superior will continue to support mid lvl moisture and cloud cover, dry sfc air working in from high pressure just off to our west should stymie any attempts at more substantial rain shower activity into tomorrow. Overnight lows should get close to freezing.
Storms will develop off of the dryline backed up against the higher terrain out west early this afternoon, and storms then move east- northeast into SE New Mexico, the western and northern Permian Basin, and parts of the I-10 corridor.
The never ending cut-off low that has been dictating our weather for the last couple days continues to bring impacts to the area before more quiet weather becomes the persisting pattern. Some of the lowest relative humidities observed have reached down to 10-15%. Further into the week, warmer temperatures push in with ridging and high pressure. Closer to Lake Superior, a weak lake breeze is expected to develop, keeping lakeshore areas cooler in the 40s and 50s.
(Tonight through Wednesday night) Weak mid-level ridging will remain in place across Deep South Texas through the period. Otherwise, lows tonight and Wednesday night are expected to be in the lower 70s as light east to southeasterly winds continue.
Snow, primarily accumulating at night, is expected across the ridges through Wednesday. Greatest snowfall amounts are forecast across the highest elevations of eastern Tucker county.
Low end PoP chances continue overnight across northeast TN and southwest VA closer to the better dynamics and cannot completely rule out seeing a flurry or two in the sky in the higher elevations of these areas. One more day of breezy winds is expected again tomorrow as the low and broad trough finally make their way off of the east coast of the United States late tomorrow.
Snow will continue in the ridges into Wednesday, with greatest amounts forecast across the higher elevations of eastern Tucker county, WV.
301 PM EDT Tue May 2 2023 Slow moving low pressure will bring cool, damp weather tonight.
214 PM EDT Tue May 2 2023 Aviation No changes needed to the forecast today as low pressure drifts south from Northern Ontario into Lake Huron. High pressure takes control over the region and temps will begin to rebound Wednesday onward following today's continued cold. On Wednesday the aforementioned high pressure moves in place over the region following the persistent low from the past several days.
(Tonight through Wednesday night) Key Messages: - Below normal temperatures - Settled conditions Settled weather in the short term will accompany slightly cooler temps due to cloud cover. A weak high amplitude ridge can be found across the central CONUS with a low pressure system around the Great Lakes region and another one just off the central CA coast. Below normal temperatures can be expected at least today and tomorrow with highs in the low to upper 80s and mostly cloudy conditions.
Late this week into the upcoming weekend, the pattern shifts to warmer and drier weather. Mostly cloudy, cool, and at times unsettled weather will continue through the near and short term periods with the broad, anomalously strong mid-upper low overhead. Overnight low temperatures are progged to fall into the lower 40s along the river valleys (30s higher elevations).
1242 PM CDT Tue May 2 2023 (Today through Wednesday Night) Not much of a pattern change going on in the short term with a upper level ridge over Texas providing us with mostly clear skies. Really no chance of meaningful precipitation in the short-term period, though there is a non-zero chance of some streamer showers developing Wednesday afternoon west of the Brazos River as daytime heating combined with the low level moisture. Temperatures will be rising through midweek with highs this afternoon expected in the low 80s, then into the mid 80s on Wednesday. Overnight lows will be in the low to mid 60s.
320 PM CDT Tue May 2 2023 Breezy northwest winds will continue into this evening but finally diminish as high pressure builds into the area.
1141 AM EDT Tue May 2 2023 Update No changes needed to the forecast today as low pressure drifts south from Northern Ontario into Lake Huron. High pressure takes control over the region and temps will begin to rebound Wednesday onward following today's continued cold. On Wednesday the aforementioned high pressure moves in place over the region following the persistent low from the past several days.
Temperatures have climbed above freezing this morning and the freeze warning for today has been cancelled.
258 PM CDT Tue May 2 2023 Omega block continues across the conus with central and eastern Kansas situated just downstream of the ridge axis in northwest flow aloft. Some elevated moisture transport is progged into the ridge axis aloft Wednesday morning across western portions of central/south central Kansas leading to weak instability, then possibly eastward to along the I-135 corridor by the afternoon.
1209 PM CDT Tue May 2 2023 Forecast is on track with another quiet but cooler day. A few short waves will spin around the upper level low and track over TN but with very dry air in place they will have little to no impact on our weather. Highs on Wednesday slightly warmer in the mid to upper 60s, with highs Cumberland Plateau Region remaining in the upper 50s to around 60 degree range.
1212 PM CDT Tue May 2 2023 Summary: The area of low pressure that has been plaguing the area will finally move to the east today as high pressure begins to build in. Vertically stacked low pressure was located just north of Georgian Bay with high pressure in control across the Plains. An omega blocking pattern remains in place aloft and the low to our east will continue to slowly creep to the southeast over the next few days. Dry and cooler conditions are expected across the remainder of northwest Wisconsin today with breezy winds. High pressure will build in for Wednesday as temperatures warm into the 50s and 60s. Weak onshore winds during the afternoon will keep temperatures cooler near Lake Superior, however.
1003 AM MDT Tue May 2 2023 Current surface map places high pressure across the Dakotas. Upper ridge, part of Omega block, is located over the Northern Plains. Upper ridge weakens Wednesday as western CONUS trough slowly advances eastward. Slow eastward progression of upper trough continues for the end of the week into the weekend, resulting in daily chance of showers/thunderstorms.
115 PM CDT Tue May 2 2023 (Today and tonight) Dry conditions are expected during the day today as the Southern Plains remains within a ridge axis between two upper-level closed- lows across the western and eastern U. Ascent associated with feature will result in widespread convection across the High Plains, which will move to the east-northeast.
A GORGEOUS afternoon is ongoing across the Florida Keys with temperatures in the lower to mid 80s, southwest to west winds near 5 mph, and dew points slowly creeping up into the mid to upper 60s. The Keys remain sandwiched between a vertically stacked low pressure system over the Great Lakes and a ridge of high pressure centered just south of Puerto Rico.
Daytime highs will gradually climb from the lower 80s to middle 80s for the rest of the short term.
Tonight and Wednesday Meso-models suggest that snow showers will taper off over northern Vilas County late this afternoon as high pressure builds into the region from the northwest.
The higher elevations will see late-season accumulating snow. The upper level low that is influencing the region will slowly work it's way down the California coast over the next day or so, with continued troughing through the end of the week, allowing for showers, high- elevation snow, below normal temperatures and isolated thunderstorms. Today looks to be the most impactful day of the week with the low spinning just to our west, with minor to locally moderate snow accumulations expected generally above 4500 to 6500 feet in the Sierra Nevada.
123 PM EDT Tue May 2 2023 Forecast remains on track as cool frontal boundary continues to slowly drift southward through North Central Florida and trough axis remains across the SE US.
not seeimg much change with this overall weather pattern as the E/SE low-level winds persist and the mid/upper ridge across the Southern Plains continues to weaken through tomorrow. Rain chances will remain the low to none side of things (given the limited moisture return from the Gulf) for tonight through tomorrow night. Lows tonight and tomorrow night to range from the lower to mid 60s inland to around 70 along the beaches.
A large-scale trough remains centered over the Great Lakes region within the Omega Block pattern, keeping us on the receiving end of reinforcing shots of cooler air and windy conditions. A Red Flag Warning remains in effect for areas largely south of I-20 through 8 PM as these high winds (gusts 35-40 mph) combine with RH values that continue to drop into the low-to-mid 20 percent range.
645 PM CDT Tue May 2 2023 (Tonight through Wednesday night) Key Messages: - Below normal temperatures - Settled conditions Settled weather in the short term will accompany slightly cooler temps due to cloud cover. A weak high amplitude ridge can be found across the central CONUS with a low pressure system around the Great Lakes region and another one just off the central CA coast. Below normal temperatures can be expected at least today and tomorrow with highs in the low to upper 80s and mostly cloudy conditions.
625 PM CDT Tue May 2 2023 Breezy northwest winds will continue into this evening but finally diminish as high pressure builds into the area.
Strong cyclonic flow associated with the trough of low pressure over the Great Lakes region will begin to push east tonight causing the pressure gradient to weaken. High temps today and tomorrow will remain in the low to mid 60s with lows in the low to mid 40s.