Aikyam-Lab/Synoptic-Bench huggingface dataset:
137 AM EDT Mon Oct 31 2022 High pressure will head offshore on Monday, while a low pressure system approaches to provide rain for the Mid Atlantic. This system should depart by Tuesday, and high pressure will return later in the week to bring dry and mild conditions. High pressure remains wedged against the eastern slopes of the Blue Ridge. A low pressure system will cross the central Mississippi River Valley tonight and enters the Ohio River Valley by Monday. However, rainfall amounts will not be too significant with only a quarter to a third of an inch expected and maybe up to a half an inch along the southern Blue Ridge.
1153 PM CDT Sun Oct 30 2022 (Tonight through Tuesday night) Mid-afternoon sfc analysis shows our pesky low pressure center now centered in the vicinity of the Ozarks, while high pressure was noted over the Mexican Plateau and ridging ewd over the nrn Gulf, maintaining a light wrly low-level flow over the forecast area. Forecast soundings/time-height sections indicate the low-level moisture minimizing this evening, with cumulus/stratocu dissipating after sunset.
and Tuesday Mid/high clouds associated with a low pressure system over IL will decrease from northwest to southeast early this morning.
(Tonight through Tuesday night) Mid-afternoon sfc analysis shows our pesky low pressure center now centered in the vicinity of the Ozarks, while high pressure was noted over the Mexican Plateau and ridging ewd over the nrn Gulf, maintaining a light wrly low-level flow over the forecast area. Forecast soundings/time-height sections indicate the low-level moisture minimizing this evening, with cumulus/stratocu dissipating after sunset.
1230 AM CDT Mon Oct 31 2022 (This evening through Tuesday) An upper low over Missouri at this time will move into the southern Great Lakes Monday. An upper ridge will build in the west Monday as southwest flow develops over Arkansas. This ridge will move east Tuesday. Models indicate another wave of light rain across the north tonight, wrapping around the low, so will keep small rain chances in the north.
(Today through Tuesday) Aloft, troughing extended from Missouri to Baja California this morning. At the surface, low pressure associated with the trough was centered over Illinois with last night's frontal boundary well to our east. Weak high pressure was centered off the Louisiana coastline. Where there are breaks in the lower deck, there is the potential for dense fog this morning, but it's not widespread. As it moves toward the upper ridge position off the east coast, it's expected to deamplify.
The main upper low swings through during the day today. With the sun, the first day of November will be warmer with highs generally in the 70s.
(Today and tonight) A broad positively tilted upper trough will continue to move overhead today but will have little effect on the area weather. The only real effect from this trough will be to continue advecting high level moisture over the region leading to near overcast skies today. This may also keep temperatures a degree or two cooler than yesterday but still pleasant Halloween weather.
Change is on the horizon tomorrow evening with increasing clouds and tomorrow nights lows in the low to mid 60s. Not much change in the upper air pattern except for an upper low that develops over the Southern Plains late in the period. The trough approaches South Texas from the west on Monday evening with changes to the weather not far behind. Precip chances continue to increase especially starting with the early morning hours on Tuesday as the increasing moisture from onshore flow combines with a LLJ across the rio Grande Valley and an Inverted Trough moving east across South Texas.
314 AM MDT Mon Oct 31 2022 Latest upper air analysis shows a ridge over the West Coast with a trough over the central CONUS and the jet stream over Southern Canada. Meanwhile the ridge will shift toward the Plains. Tuesday the ridge will move across the Plains. As the ridge moves east the low level winds will become breezy. Lows will be warmer than tonight due to the weak WAA.
Weakening upper energy and dissipating cold front will support isolated to scattered showers over our region tonight through much of Tuesday.
638 AM EDT Mon Oct 31 2022 (Today and tonight) Many this morning will likely wake up to see patchy to dense fog as a weak cold front lingers across the region. Expect high temperatures across the I-75 corridor and the SE Big Bend to climb into the mid 80s today, with areas west of I-75 expected to remain in the low 80s to upper 70s behind the cold front.
530 AM EDT Mon Oct 31 2022 Rain chances will persist through Tuesday before dry conditions resume with building high pressure. Coverage will increase tonight and Tuesday with deeper moisture and a crossing upper trough. In general, rainfall will be light with forecast QPF less than a quarter inch outside of the WV ridges where total amounts could be slightly higher by the time showers come to an end later on Tuesday.
(Rest of Today) The cold front that brought showers throughout the day yesterday has pushed east of the area across Georgia this morning.
844 AM EDT Mon Oct 31 2022 Rain chances will persist through Tuesday before dry conditions resume with building high pressure. The upper low will continue to press through the area with showers becoming more isolated to scattered as models continue to advertise a pronounced H5 dry slot over the area this afternoon into the evening. Coverage will increase tonight and Tuesday with deeper moisture and a crossing upper trough. In general, rainfall will be light with forecast QPF less than a quarter inch outside of the WV ridges where total amounts could be slightly higher by the time showers come to an end later on Tuesday. A passing upper trough will remain to the south crossing the Mid Appalachian Range with limited moisture available.
514 AM MDT Mon Oct 31 2022 Latest upper air analysis shows a ridge over the West Coast with a trough over the central CONUS and the jet stream over Southern Canada. Meanwhile the ridge will shift toward the Plains. Tuesday the ridge will move across the Plains. As the ridge moves east the low level winds will become breezy. Lows will be warmer than tonight due to the weak WAA.
657 AM CDT Mon Oct 31 2022 An upper level trough over Missouri has led to clouds developing over portions of east-central, south-central, and southeast Kansas this morning. As the upper low moves to the east clouds should clear from west to east today. Behind the upper trough we should see height rises out ahead of a trough that will be digging into the West Coast. Probabilistic and deterministic model trends have been more progressive with the trough late week. Models tend to underestimate the slow down that occurs as energy rounds the base of the trough. The bigger question will be the warm air advection rain before the trough ejects into the Southern and Central Plains.
Not a ghost of a chance for precipitation through tonight as a ridge of high pressure aloft will keep a dry and subsident airmass over the region.
Valleys will not likely receive much more than light showers until this evening, when a Pacific cold front pushes through the area.
Meteorological Discussion: Upper level ridge continues to build over the region which will lead to warmer temperatures, as compared to yesterday, and dry condtions. Some southwesterly winds gusts up to 20 mph are expected overnight over Huerfano, Las Animas, and Baca Counties, which will lead to warmer overnight low temperatures. 2) Pattern change is expected mid week and onward, with increased precipitation chances and cooler temperatures. Numerous ensemble models are in agreement about an overall messy ridge being in place across the Colorado region.
646 AM CDT Mon Oct 31 2022 (Today through Tuesday) Aloft, troughing extended from Missouri to Baja California this morning. At the surface, low pressure associated with the trough was centered over Illinois with last night's frontal boundary well to our east. Weak high pressure was centered off the Louisiana coastline. Where there are breaks in the lower deck, there is the potential for dense fog this morning, but it's not widespread. As it moves toward the upper ridge position off the east coast, it's expected to deamplify.
841 AM EDT Mon Oct 31 2022 Rain chances will persist through Tuesday before dry conditions resume with building high pressure. The upper low will continue to press through the area with showers becoming more isolated to scattered as models continue to advertise a pronounced H5 dry slot over the area this afternoon into the evening. Coverage will increase tonight and Tuesday with deeper moisture and a crossing upper trough. In general, rainfall will be light with forecast QPF less than a quarter inch outside of the WV ridges where total amounts could be slightly higher by the time showers come to an end later on Tuesday. A passing upper trough will remain to the south crossing the Mid Appalachian Range with limited moisture available.
Forecast lows remain in the lower 50s thanks to thick cloud cover and warm southerly flow.
435 AM MDT Mon Oct 31 2022 Digging NE Pac upper trough will support mild and increasingly breezy weather the next few days, along with a much colder end to the work week with chances for snow. The upper trough will split with the northern stream portion quickly progressing through the Northern Plains.
607 AM CDT Mon Oct 31 2022 (Today and tonight) A broad positively tilted upper trough will continue to move overhead today but will have little effect on the area weather. The only real effect from this trough will be to continue advecting high level moisture over the region leading to near overcast skies today. This may also keep temperatures a degree or two cooler than yesterday but still pleasant Halloween weather.
Highs will warm around climo, in the low-mid 70s. Tonight: Trough over W TX will slowly eject ENE, keeping continued ascent over the region.
715 AM EDT Mon Oct 31 2022 (Today through Tuesday) High pressure will continue to build into the Southeastern United States while NHC is forecasting the Potential Tropical Cyclone 15 in the Central Caribbean Sea to move west northwest into the NW Caribbean Sea.
1257 PM CDT Mon Oct 31 2022 An upper level trough over Missouri has led to clouds developing over portions of east-central, south-central, and southeast Kansas this morning. As the upper low moves to the east clouds should clear from west to east today. Behind the upper trough we should see height rises out ahead of a trough that will be digging into the West Coast. Probabilistic and deterministic model trends have been more progressive with the trough late week. Models tend to underestimate the slow down that occurs as energy rounds the base of the trough. The bigger question will be the warm air advection rain before the trough ejects into the Southern and Central Plains.
Otherwise, expect a cool start to the morning with early morning lows in the upper 40s to mid 50s, and highs near normal in the low to mid 70s.
Highs Tuesday are expected to warm into the upper 60s to around 70, and may get a little warmer with full sunshine and the light winds. Lows should drop into the lower to middle 40s.
Potent long wave upper level trough develops over the west coast later tonight into Tuesday, with upper level ridging over the Northern Plains into central Canada. Southwesterly flow aloft develops over the Dakotas during the day Tuesday as the ridge axis shifts eastward, with developing low pressure off to our west.
1200 PM CDT Mon Oct 31 2022 (Today through Tuesday afternoon) An upper level trough extends from the Midwest southwestward to over New Mexico, Arizona, and northern Mexico. The southern edge of this trough will move over West Texas by this evening providing enhanced upper lift over the area. The upper trough will lift northeastward on Tuesday with surface winds out of the south across West Texas and Southeast New Mexico.
(This evening through Tuesday) High pressure will develop and move over the southeast through the short term. Drier and cooler mid and upper level air will advect over the state while the low levels remain with enough moisture to allow for mostly cloudy skies today and fog development overnight. Low temperatures tonight will be in the lower 50s.
Broken cloud cover streaming in from the upper level trof axis over west Texas will provide periodic shades of grey to an otherwise pleasant Halloween day.
351 PM EDT Mon Oct 31 2022 Weak low pressure will approach today then cross the region Tuesday.
Tuesday the upper trough that was the upper low will have opened up and move into the mid Atlantic by afternoon. Temperatures with the cloud cover will be about the same north but a few degrees warmer south. Deep troughing over the western seaboard will result in downstream ridging over the eastern CONUS. A weak upper low will be trapped beneath the ridge, shifting east from Oklahoma through eastern Kentucky between Tue night and Wed evening.
Meteorological Discussion: Upper level ridge continues to build over the region which will lead to warmer temperatures, as compared to yesterday, and dry conditions. Some southwesterly winds gusts up to 20 mph are expected overnight over Huerfano, Las Animas, and Baca Counties, which will lead to warmer overnight low temperatures. 2) Pattern change is expected mid week and onward, with increased precipitation chances and cooler temperatures. Numerous ensemble models are in agreement about an overall messy ridge being in place across the Colorado region.
(Now through Tuesday night) Witches, bats and ghouls rejoice as there will be no spooky weather expected this Halloween! The cooler and drier weather will make for excellent conditions to march house to house in pursuit of sweet treats. Southwesterly flow will aloft will continue through Tuesday as the first upper level low lifts north into the Great Lakes. At the surface, winds will be light out of the north as weak high pressure moves north of the area. Temperatures will be cooler with lows in the mid 50s and highs in the 70s.
300 PM EDT Mon Oct 31 2022 The upper low now rotating along the IL/IN border region will track across NW Ohio/SE Mi this evening. Ongoing low level moisture advection along/north of a weak warm front extending across metro Detroit has been sustaining light showers/drizzle over much of the area this afternoon. A compact region of mid level subsidence will overspread Se Mi overnight into Tues morning in the wake of the departing upper low.
(Rest of today through Tuesday) High pressure ridge and easterly winds continue to persist across South Florida. A pocket of increased low-level moisture has rotated around the ridge and move into South Florida. Overnight lows will be in the lower/mid 70s to upper 70s along the east coast.
1206 PM CDT Mon Oct 31 2022 (Rest of Today) The cold front that brought showers throughout the day yesterday has pushed east of the area across Georgia this morning.
(This evening through Tuesday) Skies fared more sunny than expected even with the base of an upper trough traversing Far West Texas. As this trough axis drifts east across the region tonight, what few cirrus remain will be swept east through daybreak. The rest of tomorrow looks stellar thanks to subsidence on the rear of the trough with highs not too dissimilar from today.
156 PM EDT Mon Oct 31 2022 (Today and tonight) Many this morning will likely wake up to see patchy to dense fog as a weak cold front lingers across the region. Expect high temperatures across the I-75 corridor and the SE Big Bend to climb into the mid 80s today, with areas west of I-75 expected to remain in the low 80s to upper 70s behind the cold front.
354 PM EDT Mon Oct 31 2022 Low pressure exits the region Monday night but will keep some scattered showers in the forecast until Tuesday.
1029 AM MDT Mon Oct 31 2022 Latest upper air analysis shows a ridge over the West Coast with a trough over the central CONUS and the jet stream over Southern Canada. Meanwhile the ridge will shift toward the Plains. Tuesday the ridge will move across the Plains. As the ridge moves east the low level winds will become breezy. Lows will be warmer than tonight due to the weak WAA.
1035 AM MDT Mon Oct 31 2022 Digging NE Pac upper trough will support mild and increasingly breezy weather the next few days, along with a much colder end to the work week with chances for snow. The upper trough will split with the northern stream portion quickly progressing through the Northern Plains.
Broad WSW flow aloft continues from TX through the Lower MS Valley with an embedded 90+ knot subtropical jet nosing into the region. Large scale forcing for ascent downstream of the trough axis is aided by the thermally indirect circulation of the jet and will result in a few showers/sprinkles across the Mid-South today.
Overnight lows are expected to be in the low to mid 40s.
This will set the stage for decent Halloween evening conditions with clearing skies, light to calm wind and temperatures falling through the 50s (about 10 degrees warmer than last year). After morning fog dissipates, skies turn mostly sunny as upper level ridging quickly builds into the Midwest.
332 PM EDT Mon Oct 31 2022 slow moving area of weak low pressure and frontal system will cross the district through Tuesday, accompanied by mostly clouds skies, high relative humidity and scattered light showers.
238 PM MDT Mon Oct 31 2022 Upper level ridging over the area will bring pleasant weather for trick-or-treating with light winds and temperatures 45-55F. The upper level ridge over Colorado will shift east of the area Tuesday. This will lead to winds increasing over the higher terrain and eastern plains. Expect a Denver Cyclone to form Tuesday afternoon. North winds across the northern Front Range may keep temperatures a few degrees cooler than surrounding areas with highs in the upper 60s. Elsewhere across northeast Colorado, temperatures will reach the lower to mid 70s.
246 PM MDT Mon Oct 31 2022 20z surface analysis had low over north central MT with lee trough into eastern CO. Water vapour loop depicted low amplitude upper ridge over the northern Plains with mountain-induced cirrus spilling across the northern Rockies into the CWA. Jet streak currently south of AK and associated upper low west of BC will be the main weather maker this week.
Slight midlevel ridging and a weakening pressure gradient allow for mostly clear skies for the trick-or- treaters tonight, and while they won't need winter coats, temperatures prior to midnight tonight will be in the upper 40s to around 50.
which will likely lead to some early day stratus the next few days which will help keep temps to near normal despite the main 500mb ridge axis just to the east of the region.
924 AM PDT Mon Oct 31 2022 Warm today, with cooler conditions expected for the rest of the work week as a Pacific storm system moves across the Western USA.
134 PM PDT Mon Oct 31 2022 Warm today, with cooler conditions expected for the rest of the work week as a Pacific storm system moves across the Western USA.
(Tonight) The Tennessee Valley sits to the west of a cold front that is along the East Coast and south of an upper low that is spinning across the Midwest.
(Through Tuesday) With southwesterly flow aloft, the weak cold front bisecting the area from N-S will only slowly slide eastward overnight with marginally drier and cooler air filtering in from the west.
1021 AM CDT Mon Oct 31 2022 (Today through Tuesday) Aloft, troughing extended from Missouri to Baja California this morning. At the surface, low pressure associated with the trough was centered over Illinois with last night's frontal boundary well to our east. Weak high pressure was centered off the Louisiana coastline. Where there are breaks in the lower deck, there is the potential for dense fog this morning, but it's not widespread. As it moves toward the upper ridge position off the east coast, it's expected to deamplify.
Breezy southwest winds this afternoon will usher in warmer temperatures this afternoon ahead of an advancing cold front. A cold front will cross the region Tuesday, generating widespread valley rain and mountain snow along with much cooler temperatures. Light showers and virga in the vicinity of KBKE/KBNO Tuesday morning ahead of an approaching cold front bringing in widespread precipitation.
232 PM CDT Mon Oct 31 2022 (Today through Tuesday) Aloft, troughing extended from Missouri to Baja California this morning. At the surface, low pressure associated with the trough was centered over Illinois with last night's frontal boundary well to our east. Weak high pressure was centered off the Louisiana coastline. Where there are breaks in the lower deck, there is the potential for dense fog this morning, but it's not widespread. As it moves toward the upper ridge position off the east coast, it's expected to deamplify.
Highs will be in the low-mid 70s most areas, except cooler mtns and warmer along the Rio Grande.
Embedded troughing in zonal flow aloft will quickly proceed eastward across Northern Mexico into Texas by Tuesday morning, introducing a slight chance of rain across southern zones by Tuesday afternoon.
A weak upper level ridge was centered across the Upper Midwest with a general westerly flow aloft across northern Mn, and northwest over southern Mn this afternoon.
257 PM EDT Mon Oct 31 2022 Low pressure over the region is producing clouds and showers. High pressure will gradually build across the region for the remainder of the week bringing dry and mild conditions.
Otherwise, a weak cold front across the southeast US stretches into the eastern Gulf of Mexico and will slowly push southeastward into northern Florida overnight and will gradually push further southward towards the central peninsula by midweek, which will become increasingly diffuse during this time. Meanwhile, mid level ridging across the bahamas extends into the western Caribbean and will amplify across the peninsula into tomorrow with upper height values peaking around 592 dam.
(This afternoon through Tuesday Night) Upper trough swinging by to our north is bringing through enough moisture to keep us mostly cloudy today, with even a few light showers showing up on the 88D this afternoon.
1224 PM CDT Mon Oct 31 2022 (Today and tonight) A broad positively tilted upper trough will continue to move overhead today but will have little effect on the area weather. The only real effect from this trough will be to continue advecting high level moisture over the region leading to near overcast skies today. This may also keep temperatures a degree or two cooler than yesterday but still pleasant Halloween weather.
Mostly sunny skies were observed over most of the Keys today, with daytime high temperatures reaching the mid 80s and dew points in the lower to mid 70s. A mid and upper level ridge over the area will cause the Keys weather to be mostly calm, with a chance of a few isolated showers as winds advect patches of shallow moisture into the Keys.
Light southwesterly winds will bring warmer air into the region and allow temperatures to climb well above normal (15 to 20 degrees above normal) into the middle to upper 60s.
As the cold front moves through the region fog should dissipate from west to east, and dissipate at coastal sites between 12-13z as light northwesterly flow develops post FROPA.
150 PM EDT Mon Oct 31 2022 Rain chances will persist through Tuesday before dry conditions resume with building high pressure. The upper low will continue to press through the area with showers becoming more isolated to scattered as models continue to advertise a pronounced H5 dry slot over the area this afternoon into the evening. Coverage will increase tonight and Tuesday with deeper moisture and a crossing upper trough. In general, rainfall will be light with forecast QPF less than a quarter inch outside of the WV ridges where total amounts could be slightly higher by the time showers come to an end later on Tuesday. A passing upper trough will remain to the south crossing the Mid Appalachian Range with limited moisture available.
Lowering ceilings and light showers and virga in the vicinity of KBKE/KBNO/KMYL around 01/16-18Z ahead of an approaching cold front.