Aikyam-Lab/Synoptic-Bench huggingface dataset:
A dryline is forecast to move eastward across S TX today as a cold front moves southward into the Hill Country. The cold front is expected to move into the northern CWA early evening and move through all of the CWA by late evening. Min temps tonight will be cooler with lows in the mid 50s north to mid 60s south. The cold front will be short-lived as it quickly exits the area by Thu morning with onshore flow redeveloping. However, max temps Thu will be a tad cooler than today with highs in the mid 80s east to mid 90s west. A cold front will move across the waters this evening leading to a strong north wind tonight before weakening and becoming onshore once again Thu.
345 AM EDT Wed Apr 26 2017 A warm sunny day is expected today courtesy of a strong southerly flow in between a ridge to our east and a deep trough to our west. High temps should top out in the lower 80s. Tonight the upper trough will lift northeast over the central CONUS pushing a cold front through the Ohio Valley.
439 AM CDT Wed Apr 26 2017 Sharp upper level low pressure trough over northeast New Mexico near Logan will move southeast across the Texas Panhandle and Childress late this morning. Dry air in the lowest 10 thousand feet will limit shower efficiency, but the upper trough will at least bring a chance for light showers through the morning via top-down moistening favoring northern areas. A cold front with northerly winds has been somewhat masked by the early morning showers but will show better around daybreak bringing a period of solid northerly winds with decent surface pressure rises and cold advection. RMcQueen Consensus for strong surface westerlies on Thursday is pretty good as the base of an upper level trough pivots out of the southern Rockies during the day, shifting toward the Central Plains by early evening.
Lift appears to mainly located in the vicinity of the front and in the post frontal zone, so don't think there will be much activity in the warm sector ahead of cold front. Precipitation threat should diminish by Thursday afternoon as main lift and upper trough move off to the northeast.
Cold front will then move through later Wednesday. Rain tapering off Wed afternoon after cold frontal passage.
646 AM EDT Wed Apr 26 2017 High pressure will prevail across the region today and tonight.
150 AM EDT Wed Apr 26 2017 Low pressure centered over Delmarva tonight will continue moving northeastward. High pressure will ridge into the forecast area from the Atlantic in the wake of this system Wednesday. A cold front approaching from the west Thursday will become diffuse Thursday night. Wrap-around low-level moisture associated with low pressure over Delmarva will shift farther northeastward tonight and expect clearing during the early morning hours. Fair and warmer conditions are forecast Wednesday with upper ridging. The progressive upper trough will breakdown the upper ridge Thursday as a weak front pushes into the forecast area Thursday night.
High pressure will move to the east of the state for the next couple of days, with its axis extending over south Florida.
335 AM EDT Wed Apr 26 2017 Col between systems gives way to southerly flow today, ahead of a cold front that will weaken as it crosses Thursday night.
Showers possible over inland portions of South Florida this Atlantic high pressure has settled over South Florida, with generally light winds and little cloud cover this morning. The southeasterly flow will allow some moisture to push over the region today which could allow for some showers to develop this afternoon as a mid-level trough pushes across South Florida. High resolution guidance is hinting that some areas could see the potential wetting rains if showers do develop as they should be pretty slow moving thanks to the light southeasterly flow promoted by the high. As today concludes, any convection should diminish through the evening and a quiet and slightly warmer night should ensue. Temperatures in the low 90s will prevail but without the relief of afternoon showers and thunderstorms.
High-res short-range models lift the Missouri convection to the northeast across areas mainly along and west of the Illinois River through about 9-10 am, before the next round begins moving in from the southwest toward midday as the cold front starts to move into the forecast area.
202 AM EDT Wed Apr 26 2017 Fair and warmer today as high pressure ridges into the region.
410 AM CDT Wed Apr 26 2017 Today & Tonight: During the night, a DEEP upper-deck long wave trof that played vital role in severe thunderstorm development across primarily OK continued to move E. The ewd-moving long wave will continue to push a strong, but slow-moving, cold front SE with the front not expected to reach the Lwr-MS Valley until this eve. As the cold front continues to push SE, inverted lwr-deck ridging will punch S. Sat-Sun: We're in for a sopping wet weekend as the afore-mentioned upper- deck cyclone moves in a more Ely manner across Southwest KS & the Panhandles Sat Night. With the intense mid-upper cyclone tracking E/NE across Wrn OK late Sat Night rainfall intensities would increase. Scattered light showers are expected overnight into midday Wednesday as the upper trough pushes through the Central Plains.
416 AM EDT Wed Apr 26 2017 A low pressure area at the surface and aloft along the mid Atlantic coast will drift slowly northeast today and be near Cape Cod tonight. A ridge of high pressure will build northward from the mid Atlantic states northward into northern New York this afternoon. A ridge of high pressure will be over the North Country on Thursday, with highs in the 70s to the lower 80s. Expecting the showers to taper off this afternoon as a ridge of high pressure aloft builds northward into northern New York this afternoon. A ridge of high pressure will be over the region on Thursday with highs mainly in the 70s to lower 80s.
SHORT TERM (Today through Thursday): At the surface a cold front lies over Northwest Texas with a dry line/low pressure trough extending south into Southwest Texas and Northeast Mexico. In the mid/upper layers a strong trough over the southern High Plains will allow for deep-layered west to northwest flow to overspread South Texas today as it lifts northeast. This upper trough and the approach of the cold front will set the stage for a classic down slope event for all of Deep South Texas and RGV. The cold front across the north is expected to move into the CWA this evening and south of the River overnight.
A nice, fresh ridge of high pressure will hold on across the Southern Appalachian region through most of the forecast period keeping vfr weather in place.
Quiet weather is anticipated through tonight as high pressure slides across the region in response to a digging Plains trough. Insolation and warm advection under that ridge will support a significant warmup today. Readings will be some 10 to 20 degrees warmer than yesterday, with many locations reaching or topping 80 degrees. Main event this period is still the ejection of the Plains trough into the Great Lakes by Thursday afternoon. Given afternoon temperatures in the lower to mid 80s across much of the area with upper 50s dewpoints, think that instability may be sufficient to overcome mid-level capping, which could be mitigated by mid to late afternoon anyway as cooler 700 mb temperatures arrive.
250 AM EDT Wed Apr 26 2017 High pressure over the Atlantic will build in this afternoon through the weekend bringing above normal temperatures and below normal rain chances.
A cold front will sweep through the area today, arriving to eastern Oregon this morning and then clearing much of the forecast area by the early evening hours. As this cold front advances, shower activity will spread across the area. Higher amounts expected in the mountains, with close to an inch possible over the highest terrain.
Beginning Thursday, the weather pattern will change drastically as an upper level ridge builds over the Pacific Ocean. The result will be much drier and warmer conditions compared to the current weather pattern. A week cold front will promote another morning of rain across most of the CWA this morning. By late afternoon heights begin to rise in earnest due to an upper level ridge building off the coast. This ridge will be responsible for a significant change in the weather pattern expected for the remainder of the week and into the weekend with no precipitation expected.
An upper level trough moves out of the Rockies tonight and across the Plains Wednesday into Wednesday night. A cold front moves across our area late in the afternoon into early evening.
342 AM EDT Wed Apr 26 2017 High pressure will prevail across the region today and tonight.
451 AM EDT Wed Apr 26 2017 The slightly "cooler" and drier weather of the last 24 hours will be coming to an end shortly. After a period of unusual westerly breezes, an area of high pressure has begun to slowly build westward from the subtropical North Atlantic, across the Florida Peninsula and Keys. An associated ridge has drifted north of the Keys overnight, with resulting freshening southeast to south breezes and subsequent rising air and dewpoint temperatures (by a few degrees). For today, some scattered clouds this morning should give way to sunny skies by late morning, and the south-southeast air trajectories will transport pure maritime tropical air back into the region, with air temperatures easily reaching the mid 80s, while dewpoint temperatures likely reach the lower 70s by dusk.
Temperatures will be warmer on Wednesday, but the east may have a harder time to warm with less sunshine.
Warmer temperatures are expected through the end of the week. Low pressure off the Delmarva/NJ coast this morning will track north-northeast today to a consensus position located southeast of Cape Cod by the end of the period. It will be warmer than yesterday with highs ranging from the low 70s west to mid 60s east. Cloud trends will be key with the potential for cooler readings if clearing is slower to evolve. Utilized a multi- model blend for this period which remained consistent in placing the highest POPS over the NW Alleghenies Thursday afternoon/evening, shifting EWD into north-central PA early Thursday night.
653 AM EDT Wed Apr 26 2017 Low pressure will lift northeast from the southern Plains today to the western Great Lakes tonight likely causing showers and possibly thunderstorms to spread into the area by late tonight.
319 AM CDT Wed Apr 26 2017 Cool northwesterly surface winds have moved in across the forecast area as the cold front continues to move eastward across Missouri. Upper trof that brought the front through has additional pieces of energy rotating through its base, with the base essentially extended into the panhandles at this hour. This piece and what is the effective trof axis moves to the east of our area slowly thorough 0z, and will therefore continue to carry some low end rain chances across the eastern counties through the afternoon. The models seem to focus the highest rainfall totals where the lower convergence and upper level divergence overlap.
Snow levels will lower to mountain bases in the north, though accumulations will be limited in the lower elevations. A cold front associated with this system sweeps southeastward across the region late tonight through Thursday morning. Despite less available moisture, expect showers will continue into Thursday night as a broad trough settles over the region. Clouds, showers and weak cold air advection will keep afternoon temperatures well below normal today, and even more so Thursday in the wake of the cold front mentioned previously. Overnight lows will be cold, but expect clouds and moisture should prevent temperatures from reaching freezing in the lower valleys. Off the west coast, a well-amplified ridge begins to set up for the latter half of the week.
530 AM EDT Wed Apr 26 2017 High pressure provides sunshine and very warm temperatures today. Thereafter, quiet weather is anticipated through tonight as a 500 mb ridge ambles across. Heights will rise in response to a digging trough across the Plains, leading to a significant warmup today. Readings will be some 10 to 20 degrees warmer than yesterday, with many locations reaching or topping 80 degrees. Main event this period is still the ejection of the Plains trough into the Great Lakes by Thursday afternoon. Given afternoon temperatures in the lower to mid 80s across much of the area with upper 50s dewpoints, think that instability may be sufficient to overcome mid-level capping, which could be mitigated by mid to late afternoon anyway as cooler 700 mb temperatures arrive.
351 AM CDT Wed Apr 26 2017 Yesterday's cold front, currently along a line from Kirksville to Butler MO, has shifted winds to the northwest and is ushering in cooler temperatures. Post-frontal showers, mainly south and east of I-35, are expected to linger for most of the day as the upper-level trough moves through. Thursday evening, on and off rain chances return as a broad upper-level trough begins to deepen and send energy pulses over the area. At the surface, a low pressure system will be taking shape, advecting warmer air and moisture into the area.
Light winds/clearing skies will allow temperatures to fall off into the lower 30s in a few areas across far northeast Oklahoma. Scattered showers/isolated thunderstorms still possible late Thursday afternoon into the overnight hours in association with main upper trough axis.
331 AM EDT Wed Apr 26 2017 Surface and mid level ridge axis will continue to shift east today with return flow developing across eastern Kentucky. A robust line of showers and storms will develop along a surface cold front as this wave pushes across that region today. However, this time around the low level jet is not quite as strong, but nonetheless, there will be at least a low end severe risk through the morning and into the early afternoon hours.
Well below normal temperatures can be expected today as colder air surges southward into western Kansas in wake of the cold frontal passage yesterday, dropping H85 temperatures to around 5C across central Kansas to a little above 10C along the Colorado border. Considering cloud cover may linger through much of the morning, look for highs only up into the 50s(F) across central Kansas to possibly the lower 60s(F) in extreme southwest Kansas where clouds are likely to scatter out earlier in the day. Expect lows down into the 30s(F) in central Kansas tonight with the lower 40s(F) possible in far southwest Kansas. A warm front could lift back into western Kansas on Thursday.
355 AM EDT Wed Apr 26 2017 Low pressure over eastern Iowa with a cold front extending across the middle Mississippi valley to Texas will move east across Indiana later tonight and early Thursday bringing numerous showers and scattered thunderstorms. Brief drying will occur late Thursday and Thursday night as weak ridge of high pressure briefly builds in.
On Thursday a ridge will start to build into the eastern Pacific.
The upper low will move east of the area by sunrise this morning. The early morning cloud cover and breezy west winds will keep morning temperatures generally in the low to mid 40s. The increasing clouds should only reach about the Highway 2 corridor tonight, allowing northern zones to remain clear throughout the night with winds dying down to 5 mph or less. This will allow temps to drop into the mid-30s across the north while cloudy areas remain in the low 40s. Drier air aloft and upper level ridging will continue to bring dry, mild conditions with light and variable winds for Thursday and Thursday night.
305 AM EDT Wed Oct 04 2017 High pressure will extend from the western Atlantic to the central Appalachians for the next few days. An area of high pressure at the surface and aloft will maintain dry and seasonably cool conditions across central NC overnight. Quiet weather with stacked dry ridge over the area and seasonable temperatures today will be with us a bit longer. With the high overhead, another mostly sunny day is on tap, with light winds and highs a couple of degrees warmer as we cut off the cool air advection and the airmass begins to modify.
The upper level inverted trough continues to move toward the west across Texas. /ISSUED 653 PM CDT Tue Oct 3 2017/ Scattered showers and a few thunderstorms remain across south central Texas this evening, but convection should be mostly winding down for the Interstate 35 sites as the focus shifts further west with the approaching upper ridge from the east. The ridge to the northeast builds southwest into portions of the CWA on Wednesday.
The upper ridge will breakdown somewhat and build south as an upper low moves east near the Great Lakes region. With extensive cloud cover expected again today, have trended twd the cooler guidance today, but warmer guidance tonight. However, with the front pushing south into the area, did trend slightly cooler for nrn portions of the CWA.
205 AM EDT Wed Oct 4 2017 High pressure will control the weather through the end of the week with a warming trend taking place. Just about as quiet as it gets overnight with high pressure remaining in control.
404 AM CDT Wed Oct 4 2017 High pressure slides across the southern half of Minnesota/Wisconsin today, as a trough amplifies over the western CONUS. Temperatures in the cloudier area will be cooler, with 55-60 degree readings expected along/north of I- 94, and lower 60s to the south.
The entrenched cold airmass and clear skies has allowed temperatures to drop below freezing for all locations across western Montana and below at least 40 degrees across north central Idaho so far this morning. A low pressure system currently over northern Nevada will slowly drift northward towards Montana later today and into Thursday.
Temperatures ranged from the upper 50s in Decatur County TN to the low 70's in the Memphis metro.
305 AM CDT Wed Oct 4 2017 H5 ridge over the SE U. The position of the ridge and energy well to our north will keep a surface frontal boundary just off to our north and west in the short term.
658 AM EDT Wed Oct 4 2017 A cold front will approach the region from the northwest today and stretch out east-west across the area tonight.
409 AM EDT Wed Oct 4 2017 High pressure will continue to dominate our weather today with mild temperatures. A weak area of high pressure will build over the region Thursday, followed by another frontal passage Thursday night.
Surface wise, a massive anticyclone is centered over the mid Atlantic States with a ridge pressing southward down the southeast States and the Florida peninsula. Thereafter, uncertainty increases on whether two areas of low pressure will develop, one over south Florida and the second disturbance in the northwest Caribbean Sea.
425 AM CDT Wed Oct 4 2017 Early morning sfc analysis continues to show high pressure centered along the mid-Atlantic coastline ridging swwd through the wrn Gulf states, maintaining a light mostly erly low-level flow over the forecast area. Water vapor imagery shows ridging now in place from srn TX newd through the mid-South to the mid-Atlantic with the recent inverted trof which passed the region now off to our west. 00z U/A analysis shows the axis of better moisture associated with the inverted trof has moved wwd over the past 24 hours with drier air now encroaching the region from the east.
Upper low in west-central Nevada at 1 AM MDT. The low will bring pcpn into southern Idaho this morning and central Idaho late morning and afternoon. Heaviest pcpn will occur just west of the low, in central Owyhee County through Gooding County, and the western part of the Camas Prairie. The snow level along the path of the upper low will be near 5600 feet MSL and 2 to 4 inches of snow may fall in southeastern Owyhee County this morning. Gradual clearing tonight in most areas but rain and snow showers will linger in central Idaho into Thursday as the upper low elongates there. Highs Thursday will be a little cooler than today in Idaho but a little warmer than today in Oregon.
A much cooler air mass will continue to spread southward across western Kansas tonight resulting in temperatures falling into the 40s(F) across west central Kansas with lows generally in the 50s(F) further south and east. A modest upper level jet lifting northeast across the high plains will provide some dynamic support aloft while moisture advecting into central and southwest Kansas helps raise surface dewpoints up into the 60s(F) providing increased instability.
344 AM EDT Wed Oct 4 2017 High pressure extending into the area from the northeast will shift slowly eastward over the next few days. Upper ridge centered to our NW. Upper energy rotating clockwise around the eastern periphery of the ridge will move WSW across our region today, but atmosphere too dry to support precipitation for our forecast area, with precipitable water values less than one inch and a strong cap noted on forecast soundings.
409 AM EDT Wed Oct 4 2017 High pressure will bring moderating temperatures and mainly dry weather through Wednesday afternoon.
The upper level ridging will continue over the eastern states through the period. although the ridge gets flattened some toward late Wednesday. The primary question remains with respect to the potential development of a northward-moving low pressure system over the Gulf of Mexico during this time frame. Both the GFS and ECMWF indicate potential tropical development as this low lifts northward ahead of an approaching cold front, though there remains a considerable disconnect with the track and timing.
321 AM CDT Wed Oct 4 2017 A cold front currently extending from eastern Wisconsin to northern Missouri will sag slowly southward today. Given abundant cloud cover and showers, high temperatures today will be several degrees cooler than yesterday. Further southeast where less precip is expected, highs will once again reach the lower 80s south of the I-70 corridor.
345 AM CDT Wed Oct 4 2017 WV imagery shows the west coast trough beginning to eject NE from NoCal, while the upper ridge has built west and is centered over the ArklaTex. The low-lvl theta-e ridge persists, but has moved a bit further west into NM.
1104 PM MDT Tue Oct 3 2017 Broad area of cyclonic flow across the western to north central CONUS remains with an upper low over ND and a second larger low over CA/NV. Temps tonight are expected to drop to near or below freezing across northeast Wyoming. The difficulty is knowing how far east the temps will reach freezing. There is enough of a chance of freezing temps pushing into south central SD that have issued a freeze warning all the way to Todd/Mellette counties. Return flow will set up Wednesday with warmer air pushing back in from the south. CA/NV upper low will push into MT late Wed into Thu. The upper low will stall out with a series of waves crossing the region within the southwest flow.
350 AM CDT Wed Oct 4 2017 Expect skies to gradually trend mostly clear today underneath a strong subtropical ridge aloft while easterly low level flow continues to advect in a drier air mass. Temperatures by dawn Thursday should range from the lower 60s to upper 50s, with the coolest temperatures anticipated across typically chillier locales across central and eastern MS. A dipole blocking pattern over the Pacific Northwest will also be quickly breaking down as strong Pacific jet energy digs over the west coast of Canada. And finally, an inverted trough is progged to move west over southern Florida and into the Gulf of Mexico.
130 AM EDT Wed Oct 4 2017 High pressure will continue to influence the region through Wednesday.
However, high pressure will remain firmly entrenched across the Tennessee Valley, bringing another day of clear skies, light winds, and above normal high temperatures.
With respect to the coastal flooding and rip current risk, will extend these out through Thursday afternoon and that may need to be extended even farther as the easterly flow continues and astronomical tides are on the high side to begin with.
620 AM EDT Wed Oct 4 2017 High pressure exits today.