Aikyam-Lab/Synoptic-Bench huggingface dataset:
1123 PM EDT TUE JUL 26 2016 Warm high pressure remains over the area through Wednesday with temperatures warming into the 80s and 90s.
/issued 304 PM CDT TUE JUL 26 2016/ SHORT TERM (Tonight through Wednesday Night): Very distinct continuity boundary developing along the north side of a shear zone associated with a broad areas of mid level low pressure over Eastern and Southern Texas. Models indicate that the inverted mid level trough to weaken as it takes on slow westward drift while mean relative humidity between 925 and 700mb drops over the next 24 hours. Unfortunately, the drier mid level air wont allow for our surface humidity to lower any as surface winds from the south to southeast will keep the lower layers teaming with higher humidity levels. This will allow for heat indices to approach 110 degrees in the Lower Valley tomorrow afternoon for at least a few hours.
1029 PM EDT TUE JUL 26 2016 High pressure over the region will keep above normal temperatures in the forecast through the end of the week. An upper level ridge will remain over the southeastern overnight. Atlantic high pressure will ridge into the region. Warm air aloft combined with weak instability and subsidence beneath the upper ridge will hold dry weather across much of the area. High pressure will continue to be the dominant feature both aloft and at the surface on Wednesday. Subsidence aloft will limit convective development with only isolated diurnal convection expected, focused mainly along the lee-side trough and also along the sea breeze.
432 PM PDT TUE JUL 26 2016 Hot and dry conditions with light winds are expected under strong high pressure this week.
/issued 230 PM CDT TUE JUL 26 2016/ Our high pressure ridge has moved well west of the area, and in response, we had northerly winds for part of the day. Water vapor imagery showed the best fetch of Gulf moisture to be in these areas, but it was slowly moving westward as the high weakened. In addition, with the weakening of the high, monsoonal moisture was moving across NM and into parts of the TX Panhandle. Pretty straightforward forecast as upper high that had translated westward into the southwestern conus, thereby giving a northerly flow aloft to the region and slight rain chances, is forecast to build back eastward with a flatter ridge, weak west northwest flow aloft and increased subsidence likely.
An upper/mid level trough/low over the south half of Louisiana will push tropical moisture north across all taf sites through Wednesday.
1024 PM EDT TUE JUL 26 2016 A weak cold front will continue pushing south of Long Island overnight.
Cleaned up the wx/pop grids but expecting additional coverage of showers and storms within the next few hours and persisting into the late night hours across mainly the eastern half of the cwa while the upper level low spinning east- southeastward through the region works in tandem with the cold front also working southeast through the dakotas to produce adequate forcing/lift for convection.
824 PM EDT TUE JUL 26 2016 High pressure was overhead and will move off to the east on Wednesday.
For the next few days, the upper level ridge will remain centered west of North and Central Texas while an inverted trough continues to slowly slide west across the central Gulf Coast. A vorticity maximum within the base of the trough is currently located along the Louisiana/Mississippi border and will continue to slide northwest tonight. On Wednesday, it will stall near the Louisiana/Arkansas border, and North and Central Texas will remain between this feature and the upper level ridge to our west.
939 PM EDT TUE JUL 26 2016 The current synoptic pattern aloft features an area of high pressure over the Carolinas with low pressure southwest of the state. At the surface, the Atlantic ridge axis remains stretched across the central peninsula. High pressure over the region will keep relatively light southeast to south winds in place for the next few days, with winds becoming onshore near the coast with the sea breeze.
845 PM EDT TUE JUL 26 2016 High pressure will cross the region overnight.
908 PM CDT TUE JUL 26 2016 Scattered convection continues across central North Dakota through 02 UTC resulting from multiple outflow boundary interactions further influenced by a slowly propagating upper level low. Currently, low pressure is situated over north central South Dakota with high pressure over Saskatchewan and nosing into northwest North Dakota.
1241 AM EDT WED JUL 27 2016 Warm high pressure remains over the area through Wednesday with temperatures warming into the 80s and 90s.
1208 AM EDT WED JUL 27 2016 High pressure was overhead and will move off to the east on Wednesday.
1007 PM EDT TUE JUL 26 2016 Atlantic high pressure will prevail through much of the week while a weak trough persists inland. It will remain warm and humid with lows ranging from the mid 70s inland to the lower 80s at the beaches, Downtown Charleston and around Lake Moultrie.
Ridging dominates the southeastern portion of the CONUS with warm temperatures aloft (-5.
159 PM EDT WED JUN 1 2016 A low pressure system will begin to approach the area today. 500 mb 50 kt wind max rotating around this low results in a s/w axis which pivots thru Western Ohio late this aftn. This upper level support induces a convergent pre-frontal surface trof. Lean toward soln closer to GFS soln with scattered convection developing invof sfc trof by mid aftn over Eastern Indiana and Western Ohio and then weakening as it moves east into a less favorable environment. Went just slightly warmer than guidance with temperatures starting out pretty warm already this morning. A cold front will begin to approach the region tonight and move through on Thursday.
310 PM CDT WED JUN 1 2016 The latest sfc analysis was indicating the slow moving cold front finally edging along and east of the DVN CWA, while a ridge complex was occupying much of the plains and MO RVR Valley. With the influx of drier boundary layer air, will side with the cooler side of guidance making for a seasonably cool night with most areas having lows in the low to mid 50s.
242 PM MDT WED JUN 1 2016 Upper level analysis has closed low over northern Minnesota, with flat ridge across the western CONUS. At the surface, high pressure resides across the western Dakotas. Upper ridge flattens a bit as a clipper system slides through Montana and North Dakota late in the day. Highs will be in the lower 80s, with dew points on the plains in the 40s to lower 50s.
322 PM EDT WED JUN 1 2016 Warm front will move northeast across the area this evening. A cold front will follow closely behind. The cold front will move east of the area Thursday afternoon.
240 PM EDT WED JUN 1 2016 A cold front will increase shower and thunderstorm chances for tonight and Thursday. The forecast for tonight remains on track with gradual pop escalation as the Midwest trough draws closer.
248 PM PDT WED JUN 1 2016 High pressure will produce summer conditions with afternoon highs warming to the upper 70s to mid 80s for the Sierra and 90s to around 100 across western Nevada by late week.
Stronger heating will occur over the higher terrain in Mexico this afternoon. Air mass over the higher terrain in Mexico expected to become more unstable. Water vapor imagery shows the upper low southwest of the New Mexico bootheel with a short wave trough from just east of the Texas Big Bend to southern Chihuahua with enhancement in clouds over Coahuila. This short wave trough will move northeast into the Hill Country/Brush Country this evening as the upper low moves southeast into Chihuahua.
210 PM CDT WED JUN 1 2016 An upper low will continue to bring chances for showers and thunderstorms to the area over the next several days. Surface analysis shows many leftover outflow boundaries from overnight convection and a weak cold front slowly moving south across the area. These boundaries along with large scale lift associated with the upper low will lead to more showers and storms this afternoon. A few storms are already developing across the higher terrain and northern Permian Basin. The upper low moves overhead tomorrow with continued chances for showers and thunderstorms.
306 PM CDT WED JUN 1 2016 Latest water vapor satellite imagery showing upper level low over southern Ontario and northern Minnesota. Latest visible satellite imagery indicating stratocumulus cloud deck wrapping around upper level low into southern Minnesota. 12z GFS/NAM/ECMWF are in good agreement in moving upper level low into southeast/eastern Ontario by 18z Thursday. Stratocumulus cloud deck will continue to wrap around the upper level low and the northern half of forecast area tonight into early Thursday morning.
221 PM EDT WED JUN 1 2016 A weak pressure trough will remain in the forecast area during the rest of the week. A slow moving cold front will approach over the weekend.
Aloft the ridge that has suppressed convection is shifting east while an upper low moves slowly east across northern Mexico. The upper pattern over East Texas is becoming more divergent ahead of this upper low. Lesser rain chances can be expected over Louisiana, especially lower Acadiana, closer to the upper ridge. Thursday the upper low will cut off over South Texas while a weak frontal boundary moves into North LA/North TX. While the best lift with the upper low will remain to the east oAVIATION.
340 PM CDT WED JUN 1 2016 Scattered showers and thunderstorms are expected to continue early this evening along and ahead of cold front which is expected to be just southeast of the St. Expect chances of showers and thunderstorms to decrease late evening and early overnight across southeastern sections of the CWA as cold front slowly continues to progress.
So much of this convection is driven by mesoscale processes ahead of the main upper low that the forecast certainty in just where the convection will develop on Thursday is pretty low. (Thursday Night through next Wednesday) An eastern drifting upper low will be centered over our southeastern counties by tomorrow night.
123 PM EDT WED JUN 1 2016 Warm front located from northern Illinois to southern Ohio will move northward toward northern Ohio today. This boundary is expected to move across the area this evening with a cold front following closely behind for the overnight hours. The cold front may not move east of the Ohio/Pennsylvania border until late thursday afternoon.
A strong upper level ridge will expand into Western Washington starting Thursday night and peak over the weekend.
On Thu an upper level ridge wl be building ovr the state and it looks a little drier than today. Temps wl be warmer on Thu and should be around to just a little above average.
337 PM EDT WED JUN 1 2016 High pressure over eastern Canada will provide one more fair and mainly dry day for the Commonwealth today.
A cold front will usher in breezy conditions by this evening and into Thursday. A slight increase in winds today then increasing further for tonight and Thursday as a stronger cold front presses through the Pac NW. /sb 18Z TAFS: A cold front will cross the Cascades in the 21-23z time frame causing breezy winds to develop at most TAF sites.
Upper level ridging will be building over the state on Thursday, causing less convective development Thursday afternoon. Temperatures across the region will also be some 5-10 degrees warmer than today.
A weak pressure trough will remain in the forecast area during the rest of the week. A slow moving cold front will approach over the weekend.
348 PM CDT WED JUN 1 2016 Early-afternoon water vapor loops and upper-air analysis reveal a vigorous low pressure system located over northern Sonora/Chihuahua Mexico, tracking gradually towards the east. Overnight, convection currently developing across the high terrain of Mexico and additionally across the Texas Panhandle may persist and make a run at portions of North and Central Texas. Tomorrow, the upper-low and associated trough axis will slide almost directly overhead.
251 PM EDT WED JUN 1 2016 High pressure over eastern Canada will provide one more fair and mainly dry day for the Commonwealth today.
Most of the activity has been limited to the higher elevation along the TN/NC line and the Cumberland Plateau where the terrain has been able to provide some additional lift. A cold front will sag south across the Ohio River Valley tomorrow as a closed low progresses across the Great Lakes region.
256 PM CDT WED JUN 1 2016 A deep-layer cyclone analyzed over northern Minnesota as of early afternoon will gradually evolve into an open wave while translating east-northeast, within an increasingly zonal polar branch of westerlies situated across the northern tier of states. Highs on Thursday should be slightly warmer than today; in the lower 80s.
437 PM EDT WED JUN 1 2016 A ridge of high pressure over Pennsylvania will provide fair and warm weather this evening over most of the area.
(Issued 1050 AM CDT WED JUN 1 2016) Happy first day of Meteorological Summer! Even though seasonable overnight lows were in the low to mid 60s across the TN Valley, it felt a little bit more muggy than yesterday morning. The higher PWAT values around 1. Temps are also slightly ahead of yesterday's trend with obs at 15z in the lower 80s. High temps will be near yesterday's values reaching the lower 90s across the board. For now, tried to pick the times with the highest chances and used a VCSH.
High pressure will remain in place through the weekend, resulting in dry and increasingly warm conditions.
Upper level low continues to move across the Northern Plains with trough axis extending into eastern Nebraska early this morning. At the surface, a weak cold front was quickly dropping through the CWA providing a brief increase in northwest winds behind it. High pressure will build overhead today and remain over the area through early Thursday when return flow begins to set up.
551 PM CDT WED JUN 1 2016 Big picture across the nation, looking at water vapor imagery, shows a compact trough circulation moving east along the Canadian border towards the Great Lakes with another weaker trough circulation noted about across the eastern Pacific, about to make landfall across the Pacific Northwest.
Of concern is the fact that most guidance veers the winds to nearly due west ahead of the weak cold front, which should limit convergence. A weak cold front will move into the area today accompanied by some shower and thunderstorm activity.
643 PM EDT WED JUN 1 2016 High pressure will slowly move to the east tonight and Thursday. Low pressure will track into Quebec Thursday night bringing an occluded front across our area.
600 PM CDT WED JUN 1 2016 Latest water vapor satellite imagery showing upper level low over southern Ontario and northern Minnesota. Latest visible satellite imagery indicating stratocumulus cloud deck wrapping around upper level low into southern Minnesota. 12z GFS/NAM/ECMWF are in good agreement in moving upper level low into southeast/eastern Ontario by 18z Thursday. Stratocumulus cloud deck will continue to wrap around the upper level low and the northern half of forecast area tonight into early Thursday morning.
546 PM EDT WED JUN 1 2016 A cold front will increase shower and thunderstorm chances for tonight and Thursday. The forecast for tonight remains on track with gradual pop escalation as the Midwest trough draws closer.
238 PM EDT WED JUN 1 2016 A cold front will bring a few showers and perhaps a thunderstorm to eastern parts of the area this afternoon.
1251 PM PDT WED JUN 1 2016 A significant warming trend will continue place over the region into the weekend as high pressure builds over Central California. High pressure continues to intensify over the forecast area with satellite imagery showing the center of the anticyclone near Yosemite.
402 PM CDT WED JUN 1 2016 Big picture across the nation, looking at water vapor imagery, shows a compact trough circulation moving east along the Canadian border towards the Great Lakes with another weaker trough circulation noted about across the eastern Pacific, about to make landfall across the Pacific Northwest.
The 500mb temps are only around -8C, there is a weak cap between 700mb and 600mb, the upper level trough has slide slightly east, and there is a 500mb ridge building.
220 PM MST WED JUN 1 2016 A high pressure system is forecast to build over the region and provide a strong warming trend the remainder of the week and weekend.
1110 AM MDT WED JUN 1 2016 The ridge along the left coast this morning will be slowly spreading across the Intermountain West through the short term period. Warmer temperatures building aloft will begin to limit afternoon instability while also translating to surface temperatures pushing above normal. PVU fields suggest a very weak wave dropping southward across the CWA tomorrow afternoon on the leading edge of the building ridge. High pressure amplifies over the Desert Southwest late this week bringing hot and dry conditions to the region.
1259 PM MDT WED JUN 1 2016 A weak lee trough will move across the CWA this afternoon and early evening. Slight chc to chc PoPs are possible in the western/southwestern portions of the area this afternoon as this trough traverses the region. High pressure will build into the area as we head into the evening and overnight hours with dry and warm weather returning as a result. This ridge will gradually amplify and build eastward as an upper low situated over the northern plains moves slowly northeastward. Warmer and more seasonal temperatures will encompass the CWA on Thursday with afternoon highs reaching into the lower 80s.
150 PM PDT WED JUN 1 2016 High temperatures will rise throughout the week as high pressure builds aloft.
323 PM EDT WED JUN 1 2016 Scattered showers and thunderstorms have popped up over the high terrain of the southern Appalachians, and would appear on track for development here with just a bit more heating. Morning temperatures are in the low to mid 60s so it will be another warm day with highs in the mid and possibly upper 80s with rain and storm chances increasing after 18Z. Mostly clear skies remain over eastern Kentucky this morning, allowing for temperatures to quickly drop into the lower 60's except for on the ridge tops. This is in response to the large northern stream upper low currently over northern Minnesota interacting with southern stream jet axis ushering subtropical moisture into the mid-Mississippi Valley.
1240 PM CDT WED JUN 1 2016 /18Z TAFS/ VFR conditions have developed across most of the terminals early this afternoon as the low clouds cleared. With increased sunshine and warmer temperatures however, showers and storms have started to redevelop. A weak surface cold front will produce light winds across West Central Texas today from the north.
/issued 325 AM CDT WED JUN 1 2016/ Quieter weather in store for today with the CWA feeling influence from upper level ridge to the south. An upper level low centered just south of Arizona today will slowly progress eastward today and tonight, reaching central Texas by Thursday afternoon.
334 PM EDT WED JUN 1 2016 High pressure will slowly move to the east tonight and Thursday. Low pressure will track into Quebec Thursday night pulling an occluded front across our area.
Eastern ND will begin to clear out after midnight and overnight lows should be a few degrees cooler in the west while clouds result in a late start to radiative cooling across the east.
The last lingering band of low clouds from the departing low pressure system remained over our central and eastern zones today, but resulted in nothing more than a partly cloudy day under a broad area of weak upper-level ridging.
High Broad and expansive low level thermal trough may result in some of the upstream cu field to swing through srn WI.
Although biggest threat will be north of the border, a sighting of a funnel around Lake of the Woods and adjacent areas is possible with the upper low moving across the region this aftn. One last impulse rotating around the low may expand pcpn band a bit farther south in Mn this afternoon before departing.
301 PM MDT WED JUN 1 2016 Current satellite indicates drier air moving into the region as high pressure builds into the Desert Southwest. High pressure amplifies over the Desert Southwest late this week and through the weekend bringing hot and dry conditions to the region.
Moist sw flow will keep overnight lows elevated in the low 60s through tonight. Rebounding heights and thermal profile in the wake of the closed low over Minnesota today will support warm temperatures once again on Thursday.
Warm and humid air across the region will maintain shower and thunderstorm formation through the week and upcoming weekend, as a cold front slowly approaches the coast.
Given the high PW and motion - localized rainfall of 4-8 inches will be a good bet.
349 PM CDT WED JUN 1 2016 Excessive rainfall rates in excess of 2 inches per hour continue with embedded thunderstorms rotating around a multiple vorticity center, low pressure system located across the western South Plains this afternoon. Current upper level low over northern Mexico will slide into south/central Texas and remain nearly stationary through the early portion of the weekend.
The subtropical ridge is rooted well east of Bermuda and extends west across the Florida peninsula, albeit much weaker on its western flank. Temperatures are in the mid to upper 80s and dewpoints remain in the lower to mid 70s. Isolated showers continue to pulse within the cloud line of the Lower Keys.
Indeed, the dew point temperatures as far east as Fort Morgan and Limon have dropped into the lower 30s, while Akron's dew point is expected to fall from the current 61 degree reading in the next hour or so. The other location to get showers this evening will be the higher terrain of Larimer County, where a few brief thunderstorms may develop. After the evening convection dissipates, a lee trough of low pressure will remain over northeast Colorado, and the circulation around the surface feature will advect low level moisture back into the region. Temperatures in the Denver area are expected to be some 5 to 10 degrees cooler than today.
1241 PM CDT SAT MAY 21 2016 High pressure centered over Iowa will be the dominant weather feature today, keeping temperatures near normal and skies mostly clear aside from some cirrus spilling in from the north. A weak vort max dropping through this evening could spark off a few showers or storms, primarily across eastern/central KS where an elevated warm front will be lifting northeastward. Warm front lifting through on Sunday will bring temperatures back into the upper 70s/near 80, though the more noticeable impact will be a rapid increase in humidity with dewpoints reaching the mid and even upper 60s by late afternoon.
A broad upper level low pressure system will remain over the western states well into the upcoming week. This low pressure will maintain periods of unsettled spring like conditions across the region throughout the week.
Temperatures will trend noticeably warmer through mid week with most areas likely hitting 80 degrees for the first time this month heading into the holiday weekend. Temperatures should get a little warmer than today but still below normal for late May.
Axis of trough aloft was shifting off the coast and drier air aloft was filtering in, especially across the north. High pressure ridge is forecast to build just north of Florida which is forecast to produce an East (onshore) flow with only slight modification to the dry, subsident airmass. Frontal trough will pass southeast of the waters by early Mon and provide a brief period of northerly flow. High pressure ridge will then build north of the waters with a gentle easterly breeze developing Tue.
A high amplitude ridge will drift across the Upper Midwest. Min temps will be a bit warmer than last night given warmer 925mb temps. A lake breeze will keep temps near the lake cooler, but they should be able to get into the mid 70s. Lakeshore temps reached the lower 70s today with a steady east wind all day.
218 PM CDT SAT MAY 21 2016 The 19z surface analysis indicated that the secondary cold front was moving through the forecast area with mid to upper 50s dewpoints already advecting southward through southern middle Tennessee.