Aikyam-Lab/Synoptic-Bench huggingface dataset:
959 PM EDT Tue May 9 2023 Dry high pressure will build into the Great Lakes tonight and Wednesday bringing clear skies and comfortable humidity with light winds.
Cold front near the Kentucky/Tennessee border continues to press south, with a slowly dissipating stratus deck behind it. Expect skies to continue clearing through this evening as high pressure over the Great Lakes builds in. Mild spring weather continues on Wednesday with plenty of sunshine and temps just a few degrees warmer than today.
806 PM EDT Tue May 9 2023 Behind a cold front tonight, temperatures will be near to slightly below normal Wednesday.
Weak high pressure ridging at the surface is responsible for lighter winds; expect light/variable to calm winds to be the norm later this evening and overnight. Despite subtle ridging aloft, moisture is forecast to increase/converge over the peninsula in response to a trough passing well to our northeast. The highest coverage should eventually concentrate well inland late in the day where the Gulf/Atlantic breezes collide - most likely over Orange and Lake counties.
KEY MESSAGES: - Weakly forced environment with a weak warm front draped over southern MN/WI will keep isolated to scattered showers/thunderstorms in the forecast through Wednesday.
731 PM EDT Tue May 9 2023 High pressure will bring dry weather and seasonable temperatures through the end of the week and into this weekend. High pressure and dry conditions with seasonable temperatures is expected through the period. Our current active growing season counties will be a little warmer, and although some isolated/patchy frost will be possible, it will not be widespread enough to warrant a frost advisory. Tomorrow night will remain mostly clear, but temperatures will be a few degrees warmer than tonight, so no frost headlines are expected at this time.
There have been a few gusts in the 30-40 mph range where collapsing cored (15-20kft agl) occurred, and pea size hail can't be ruled out due to low freezing levels. Continued WAA as the thermal ridge pushes eastward will help allow for shower and thunderstorm development late Wednesday afternoon through the evening primarily in far northeastern ND and northern MN. This is especially true with the relatively low freezing levels early in the warm season.
The HRRR is showing potentially around midnight or shortly after for this potential mainly over north central KS where the nose of the low level jet may affect.
1026 PM EDT Tue May 9 2023 A cold front moves south of our region tonight. On Wednesday, dry high pressure builds in from the north and will remain into the weekend. A cold front settles through the area from the north tonight. The easterly component in the low-level flow poses the possibility of low stratus developing overnight across much of the area along and east of the Blue Ridge Escarpment, though so shallow it does not warrant a mentionable PoP, especially with subsidence inversion above the moist layer. The cooler high should knock max temps down around 10 degrees Wednesday, back to about normal for mid-May. An upper ridge will dominate our weather thru the short term, with a disturbance currently over SE TX shearing out and not really surviving over the ridge axis.
729 PM EDT Tue May 9 2023 Dry high pressure will build into the Great Lakes tonight and Wednesday bringing clear skies and comfortable humidity with light winds.
An upper-level trough across the west will promote light rain shower development across central Nevada this afternoon with more widespread showers and isolated thunderstorms across the state Wednesday afternoon. High pressure ridge builds over the western U.
647 PM CDT Tue May 9 2023 Quiet weather is in store through the short term period as high pressure remains overhead.
742 PM EDT Tue May 9 2023 A cold front moves south of our region tonight. On Wednesday, dry high pressure builds in from the north and will remain into the weekend. A cold front settles through the area from the north tonight. The easterly component in the low-level flow poses the possibility of low stratus developing overnight across much of the area along and east of the Blue Ridge Escarpment, though so shallow it does not warrant a mentionable PoP, especially with subsidence inversion above the moist layer. The cooler high should knock max temps down around 10 degrees Wednesday, back to about normal for mid-May. An upper ridge will dominate our weather thru the short term, with a disturbance currently over SE TX shearing out and not really surviving over the ridge axis.
815 PM EDT Tue May 9 2023 Broad, zonal flow with weak upper-level ridging remains in place today across the region. A more continental upper-level airmass, which is a little cooler and drier than the typical airmass in summer, is the culprit for such a potential as this. While the subtropical ridge begins to settle in at the surface, the upper-level flow hasn't completely flattened yet.
734 PM CDT Tue May 9 2023 (This evening through Wednesday) High pressure off the southeast coast will continue to influence the state with south to southwesterly low level flow through the short term. High temperatures today will be in the low to mid 80s, but with humidities present, the heat index will be in the upper 80s and lower 90s today.
Temperatures will trend cooler tomorrow with a few light showers in Lincoln County. Thereafter, a warming trend is expected through the weekend as a high pressure ridge builds into the region.
There is a chance of showers and mountain thunderstorms through tonight as an upper low moves through the area. An upper low continues to move southeast over the coastal waters. The air mass is becoming increasingly unstable due to cold air advection aloft, diffluence from the upper low, and surface heating, though as of 1pm activity is still pretty minimal. Scattered showers and isolated thunderstorms are expected to develop later this afternoon over the mountains and continue into this evening with the highest potential in Ventura County. As the upper low moves onshore near San Diego overnight the steering flow will shift to northwest and there may be a few hours with some light showers spilling over into the LA/Ventura County coast/valley areas.
A decent cloud line formed in the vicinity of the Lower Keys late this morning and early afternoon. For tonight, with dewpoints hovering in the upper 60s at most island communities, aforementioned mostly clear skies, and light easterly winds, radiational cooling may drop temperatures into the lower to mid 70s at our typically favored cooler spots.
As a result, a dry evening is forecast with overnight lows in the lower 60s.
937 PM EDT Tue May 9 2023 Behind a cold front tonight, temperatures will be near to slightly below normal Wednesday.
A few valley locations are beginning to drop off and the current ridge to valley split may need to be increased if trends continue under clearing skies. As of 15Z frontal analysis, a weak cold front is slowly tracking across the CWA. Also with the latest frontal analysis, high pressure is building in from the northwest into the Ohio Valley. This building dome of high pressure will aid in the dissipation of the clouds as drier air works into the region. With upper-level ridging building into the region, the short-term forecast is rather quiet.
On Wednesday, a quick-moving trough will deliver cooler and windier conditions, along with a chance for a few rain or high elevation snow showers. A compact upper low will enter southern California tonight and move through Arizona on Wednesday. This low will drop our daytime temperatures 10-15 degrees, with the axis of stronger southwest winds shifting to eastern Arizona. Enough mid-level moisture and instability exists with this low to include 15-30% coverage of showers and an isolated thunderstorm for most areas of northern Arizona.
Latest water vapor imagery shows an upper level low tracking along the CA coast this afternoon. High temperatures are expected to reach into the low to mid 70s in the Valley, with 60s to near 70 for the foothills and 40s to mid 60s for the mountains. A dusting up to 3 inches will be possible at the higher mountain peaks south of I-80, with snow levels generally above 7000 feet. Otherwise, ensembles and cluster guidance indicate a ridge of high pressure building across the West for the second half of the week, bringing significantly warmer temperatures and dry conditions.
Temperatures now reside in the upper 60s under clear skies with light northerly flow under the influence of high pressure. Longwave ridging over the central CONUS will amplify tonight and will extend into the Great Lakes through the remainder of the midweek period. This will result in some general persistence with the forecast for the next several days given the continued stability under a reinforced high pressure system.
641 PM CDT Tue May 9 2023 (The rest of this afternoon and Tonight) A warm and muggy afternoon today could lead to an isolated thunderstorm or two developing later this afternoon near a weak surface pressure trough across northeast Oklahoma. A better chance for storms will come this evening and tonight as a complex of storms currently across central Kansas will progress south, southeastward through the afternoon following a fairly tight instability gradient and warm frontal boundary. The cooler outflow will filter in across parts of the area, providing some slightly cooler overnight lows from near Highway 412 and north.
706 PM EDT Tue May 9 2023 High pressure will bring dry weather and seasonable temperatures through the end of the week and into this weekend. High pressure and dry conditions with seasonable temperatures is expected through the period. Our current active growing season counties will be a little warmer, and although some isolated/patchy frost will be possible, it will not be widespread enough to warrant a frost advisory. Tomorrow night will remain mostly clear, but temperatures will be a few degrees warmer than tonight, so no frost headlines are expected at this time.
919 PM EDT Tue May 9 2023 High pressure will bring dry weather and seasonable temperatures through the end of the week and into this weekend. High pressure and dry conditions with seasonable temperatures is expected through the period. Our current active growing season counties will be a little warmer, and although some isolated/patchy frost will be possible, it will not be widespread enough to warrant a frost advisory. Tomorrow night will remain mostly clear, but temperatures will be a few degrees warmer than tonight, so no frost headlines are expected at this time.
712 PM EDT Tue May 9 2023 High pressure will bring dry weather and seasonable temperatures through the end of the week and into this weekend. High pressure and dry conditions with seasonable temperatures is expected through the period. Our current active growing season counties will be a little warmer, and although some isolated/patchy frost will be possible, it will not be widespread enough to warrant a frost advisory. Tomorrow night will remain mostly clear, but temperatures will be a few degrees warmer than tonight, so no frost headlines are expected at this time.
105 AM EDT Wed May 10 2023 High pressure will drift east from the Great Lakes tonight into Thursday, bringing mainly clear weather. High pressure will bring dry, mainly clear weather Wednesday into Thursday with near to slightly above normal temperatures Wednesday featuring highs in the mid 60s to mid 70s. A weak short wave trough will dive southeast across New England on Thursday.
119 AM EDT Wed May 10 2023 Dry conditions and warmer temperatures continue midweek through Thursday due to high pressure over the Great Lakes region.
Readings could be 10 degrees cooler compared to yesterday. Beneath a slow moving H500 area of low pressure, a corresponding MCV will track from near Austin, TX toward SW AR over the next 24 hours or so.
258 AM EDT Wed May 10 2023 High pressure will provide warm, dry, and mostly sunny weather through the end of the week.
This fog will burn off a few hours after sunrise, leaving mostly sunny skies through the day as a large high pressure area sits over the OH/TN Valley region. Highs will reach into the lower and mid 80s in most spots this afternoon. This evening, clouds will begin to increase as the midlevel ridge axis shifts east and a southerly flow of Gulf moisture approaches the area.
A weak frontal boundary has edged into the northeast overnight, while a low will continue to spin in the southern area of the ARKLAMISS in association with a trough in place here. As the low spins northeast today, it will send the frontal boundary back as a warm front and showers and storms will increase in coverage from west to east. On Thursday, high pressure will build to our east and increase the easterly flow across Georgia. By the afternoon we should have about the same coverage as today, with the best coverage in the west as the distance between the boundary in the east and trough to our west decrease. Highs may be a touch cooler in the east on Thursday due to the drier air and easterly flow.
1228 AM CDT Wed May 10 2023 (This evening through Thursday) Skies were mostly sunny across AR this afternoon sandwiched between an upper level disturbance passing around the periphery of an upper ridge, located in KS and NE, and a weak mesoscale low pressure feature along the gulf coast of TX.
By Wednesday, the ridge axis will slowly begin to slide eastward. A strong midlevel trough is progged to eject into the Plains.
The combination of the wedge and cold front is only subtly reflected in high temperatures forecast for this afternoon, with most areas a degree or two cooler than yesterday and still warming into the mid to upper 80s. The stalled cold front will waver somewhat later today as the western portion attempts to surge back northward over Alabama as a warm front. High temperatures Thursday will be a few degrees cooler, with rain chances similarly confined to western and central Georgia.
327 AM EDT Wed May 10 2023 High pressure will bring dry weather and seasonable temperatures through the end of the week and into this weekend. High pressure and dry conditions with seasonable temperatures is expected through the period. Our current active growing season counties will be a little warmer, and although some isolated/patchy frost will be possible, it will not be widespread enough to warrant a frost advisory. Tomorrow night will remain mostly clear, but temperatures will be a few degrees warmer than tonight, so no frost headlines are expected at this time. High pressure remains overhead Thursday night, keeping conditions calm. Mostly clear skies and light winds will allow for radiational cooling to drop temperatures into the low 40s with upper 30s possible in some sheltered valleys.
1231 AM EDT Wed May 10 2023 High pressure will build across the region through Thursday.
(Today through Thursday) Upper level ridge has built into the region and we are seeing light winds across the area. The highest instability will be west of I-24 and this is where we will see widespread activity. (Thursday Night through next Wednesday) A few showers will linger into early Thursday as the short wave trough exits the region. The upper level ridge will then amplify into the weekend bringing hot conditions with highs possibly reaching the lower 90s.
302 AM EDT Wed May 10 2023 High pressure will build overhead today before moving offshore late in the week. A frontal boundary will stall nearby for the weekend with waves of low pressure tracking along it, bringing unsettled conditions. Today will be milder with highs in the low to mid 70s for the lower elevations and 60s in the mtns. With the low overhead tonight, winds should go calm with radiational cooling prevailing. The aforementioned area of high pressure will meander further east and reside just off the Mid-Atlantic Coast by Thu evening. Thu will be even milder given the southerly return flow with the high pressure offshore with highs in the low 80s for most (70s mtns).
116 AM EDT Wed May 10 2023 High pressure will drift east from the Great Lakes tonight into Thursday, bringing mainly clear weather. High pressure will bring dry, mainly clear weather Wednesday into Thursday with near to slightly above normal temperatures Wednesday featuring highs in the mid 60s to mid 70s. A weak short wave trough will dive southeast across New England on Thursday.
In addition to the high pressure, substantially dry air is in place through most of the column. The overall lack of moisture combined with the high pressure influence will keep conditions dry and hot today, though a few showers cannot be ruled over the interior areas where the sea breezes converge. This, combined with a weakening of the upper-level ridge and increased atmospheric moisture, will bring better chances for showers and afternoon thunderstorms across South Florida, with the highest chances over the interior areas. Temperatures will reach the low 90s for most of South Florida today, though immediate east coast locations will remain in the 80s given the easterly flow. Thursday will be a few degrees cooler, with highs generally in the mid to upper 80s along the east coast, and upper 80s to low 90s over the interior and gulf coast.
Ridging at the surface and aloft will lead to continued mostly clear skies, dry weather, and mild temperatures through tonight. Will increase diurnal temperature range a bit, primarily on the min temp side, as the aforementioned decoupling should allow for very effective radiational cooling and bring lows to the lower side of the guidance envelope. Thursday: Amplifying mid-upper ridge and positive 500-mb height anomalies are present.
(Today and tonight) A weak upper low over central Texas will lift north-northeast to near or just north of the Dallas/Fort Worth area today. A stronger upper low will move east across the Desert Southwest to the Arizona/New Mexico border today. The aforementioned upper low will lift northeast to near the border of far northeastern New Mexico/southeastern Colorado by sunrise Thursday.
912 PM PDT Tue May 9 2023 A fast-moving low pressure system approaching from the northwest will bring stronger onshore flow and cooling through Wednesday.
122 AM EDT Wed May 10 2023 High pressure will bring dry weather and seasonable temperatures through the end of the week and into this weekend. High pressure and dry conditions with seasonable temperatures is expected through the period. Our current active growing season counties will be a little warmer, and although some isolated/patchy frost will be possible, it will not be widespread enough to warrant a frost advisory. Tomorrow night will remain mostly clear, but temperatures will be a few degrees warmer than tonight, so no frost headlines are expected at this time. High pressure dominates again on Thursday, keeping conditions calm and dry for our region.
Temperatures now reside in the upper 60s under clear skies with light northerly flow under the influence of high pressure. Longwave ridging over the central CONUS will amplify tonight and will extend into the Great Lakes through the remainder of the midweek period. This will result in some general persistence with the forecast for the next several days given the continued stability under a reinforced high pressure system. Periods of nuanced mid to high based clouds will be possible Wednesday morning and afternoon along a very weak elevated warm front, but otherwise the most notable change will be the warming temperatures as a thermal ridge sets up over the Great Lakes.
Temperatures today will be about 5 to 10 degrees warmer than they were yesterday (away from the lake) under a mix of high clouds and sun. It looks like we'll pick up a bit more cloud cover, especially very late in the day, but don't think this will impact our ability to warm into the low to even mid 80s away from the lake.
334 AM EDT Wed May 10 2023 Discussion/Marine -- Warm and Dry Through Thursday -- Increasingly warm yet still rather dry air will be slowly flowing in on the back side of high pressure today and Thursday.
Otherwise, should see largely dry conditions return overnight as weak upper level ridging builds overhead. That being said, may see a few showers creep into NE Nebraska prior to daybreak Wednesday ahead of an advancing sfc warm front. Look for upper level ridging to amplify throughout the day Wednesday as a trough deepens over the Four Corners region. Highs during this time will be a touch warmer than today, as temperatures rise in the upper 70s to lower 80s. Otherwise, expect chances for showers and storms to gradually increase late Wednesday afternoon/evening as the upper level trough ejects northeastward into the central Plains. By early Thursday, models show the upper level low becoming cut-off from the surrounding flow as the wave lifts into northeastern Colorado.
Additional, more organized storms are possible on Thursday as area of low pressure on the east coast of Texas Wednesday morning lifts south to north across Missouri on Thursday. Another trough across the central Plains will lead to additional thunderstorms across western Kansas/Nebraska.
304 AM EDT Wed May 10 2023 High pressure over the southern Great Lakes will move slowly east through the next day or so, with dry and sunny conditions expected.
Cooler temps are expected in the east, with a lake breeze moving inland today and tomorrow.
High pressure across the West will kick off a warming and drying trend Thursday and into the weekend with low 80s for the lower valleys and low 70s for the mountain communities.
(Today through Thursday) Rain and thunderstorm chances will continue today as moisture continues to move around an area of low pressure to the north of us. Precipitation will begin to taper off this afternoon as the low moves to the northeast and a weak ridge will build in over the area.
125 AM EDT Wed May 10 2023 High pressure brings dry, seasonable weather today and Thursday. Upper level ridging slowly shifts east with the region in northwesterly flow aloft through the period. At the surface, high pressure over the Lower Great Lakes yields weak but dry northerly flow through the day. Mainly dry during the short term period with high pressure in control.
1246 AM EDT Wed May 10 2023 Dry high pressure will build into the Great Lakes tonight and Wednesday bringing clear skies and comfortable humidity with light winds.
315 AM EDT Wed May 10 2023 Upper level ridging over the Plains continues amplifying in response to an upstream trough digging into the Front Range which maintains persistent height rises over SE MI through Thursday.
A high pressure system is sitting over the Great Lakes today, which is providing us the beautiful weather that is on deck for today. Delaney On Thursday, the high pressure system that is over the Great Lakes will move off to the east and moisture advection will increase, bringing higher dew points back into the Illinois area.
In the meantime, a weak upper level trough over Texas will continue to lift northeastward making it's way into the forecast area late Wednesday night. Byrd By Thursday, the upper level ridge will begin to weaken as the upper level trough over the southern Rockies begins to lift out towards the region.
KEY MESSAGES: - Weakly forced environment with a weak warm front draped over southern MN/WI will keep isolated to scattered showers/thunderstorms in the forecast through Wednesday. Mid level heights will build Wednesday with a deep trough advancing eastward across the southern Rockies.
A deep upper level trough will approach the high plains Wednesday night. As the upper low continues to move east, thunderstorms will continue to develop Thursday morning and these will likely be severe with large hail. After Thursday, it appears a weak upper low is still advertised to move northward out of the tropics across the southern high plains, bringing widespread showers and thunderstorms.