Aikyam-Lab/Synoptic-Bench huggingface dataset:
133 PM MDT Tue Mar 14 2017 Continued dry with warmer temperatures through Wednesday. The upper ridge over the Rockies today pushes east over the high plains on Wednesday while the lee trough also expands from the Front Range over the Plains. Temperatures will continue to rise on Wednesday with highs reaching the middle 70s over the western sections of the forecast area while the eastern sections remain in the lower 60s. With the warmer temperatures expected, RH values will drop into the lower teens of percent across far eastern Colorado and the eastern Colorado border area.
Issued by National Weather Service St Louis MO 1256 PM CDT Tue Mar 14 2017 A large upper level low will shift southeast through the Great Lakes and Midwest. Some guidance is trying to produce some small/minor chances for precip Thu in the low level warm air advection regime.
350 PM CDT Tue Mar 14 2017 As the northern and northeastern parts of the country deal with a fairly powerful storm we have a tranquil period of weather developing over the next few days as high pressure shifts towards us in the wake of the aforementioned storm before settling just to our east over the eastern Gulf of Mexico and Florida.
In either case, temperatures should plummet into the lower 20s at most locations (a bit higher near lakes), and into the upper teens in southern middle TN and atop the Cumberland Plateau. Record minimum temperatures at Huntsville and Muscle Shoals are as follows for 3/15: HSV: 19 in 1993 MSL: 19 in 1926 Cold northwest flow aloft will persist through Wednesday with high pressure moving to along the MS River by afternoon.
Low-level easterly to southeasterly flow will continue overnight and bring in shallow moisture up the Rio Grande Valley and pool it against the higher terrain of the Plateau. Despite the clouds, temperatures will reach a few degrees warmer than today into the low and mid 70s.
As ridge gradually builds across South Florida, drier and cooler air mass will continue to filter into the region with this northwest flow for the next several days. Tonight, temperatures will feel cooler with lows falling into the 50s for most areas, with some 40s interior.
342 PM CDT Tue Mar 14 2017 A fairly quiet weather pattern is setting up as high pressure centered over the Northern Plains is forecast to build southward over the next several days.
338 PM CDT Tue Mar 14 2017 Wrap around clouds have lingered through the day today as the upper low moves across the Great Lakes and the corresponding trough across Eastern Conus. Clouds should be around through the evening but should start to move out as the upper low moves eastward toward New England allowing moisture to pull away from Alabama.
132 PM EDT Tue Mar 14 2017 Northerly winds will be found over the Ohio Valley in between a strong east coast low pressure center and high pressure over the Upper Midwest. A strong upper level low will cross into the northern Ohio Valley from the Great Lakes today.
256 PM MDT Tue Mar 14 2017 An upper level ridge of high pressure will move over the region tonight and Wednesday, continuing the generally clear sky and mild, above-normal temperatures. With rising heights and upper level temperatures, expect Wednesday to be a few degrees warmer than today. The ridge flattens Wednesday night as an upper level trough moves across the Pacific NW and suppresses the ridge to the southeast.
Expect to see winds increasing with valley gusts of 30-40 mph north of Highway 50, and Sierra ridges increasing to near 70-80 mph Wednesday afternoon and Wednesday night.
CSV ASOS is also reporting some dense freezing fog at present. On the Plateau, very light snow or flurries will be possible today as temperatures will remain colder, and also added mention of patchy freezing fog for the morning hours.
Right now, lows in the mid 30s across northeastern Florida and closer to freezing across southeastern Georgia still seem likely as cold air advection continues. On Wednesday, clear skies and breezy northwest winds will continue as high pressure centered across the Midwest filters southward. These temperatures are about 10 to 15 degrees cooler than the low 70s we typically see in mid-March.
508 PM EDT Tue Mar 14 2017 Strong low pressure well north of the forecast area will help cause breezy conditions through Wednesday. Canadian high pressure building into the area will bring freezing conditions.
334 PM CDT Tue Mar 14 2017 Very cold temperatures with below zero readings are the main impact in the short term as a high pressure sets in east of the CWA this evening. The low level moisture, on the other hand, is very limited. A quiet and less cooler day is on tap for Wednesday.
646 PM EDT Tue Mar 14 2017 Strong low pressure well north of the forecast area will help cause breezy conditions through Wednesday. Canadian high pressure building into the area will bring freezing conditions.
223 PM CDT Tue Mar 14 2017 A vigorous upper level LOW was located over southeast Lower MI this afternoon but has far reaching influence west of the MS River valley. Loss of sunshine/diurnal influences and a strong cold Canadian HIGH pressure building in at the surface should result in widespread clearing across our region this evening with the possible exception for a few additional hours of the far eastern CWA where they will still be close enough to be influenced by the now further eastward- shifted lake effect snow band from Lake Michigan.
Issued by National Weather Service Chicago IL 255 PM CDT Tue Mar 14 2017 Lingering flurries or light snow showers will affect areas primarily east of Interstate 55 through the remainder of the afternoon and early evening hours, in response to a mid-level short wave rotating through the southern periphery of an upper low over the western Great Lakes region. Despite sunshine, highs will be chilly for mid- March, only reaching the low-mid 30's.
FREEZING TEMPS EXPECTED OVER PART OF THE REGION TONIGHT AND The cloud deck is hanging in there across the region from the northwest as well as some mixing out of the clouds from the south under some cool breezy conditions. Highs will be from the lower 40s northeast to the lower 50s south.
135 PM EDT Tue Mar 14 2017 Outside of some brief MVFR ceilings early this afternoon, VFR flying conditions will prevail at the TAF sites as drier air continues to filter in behind a cold front. Cold front should exit south of the region by the early afternoon hours, with gradually clearing skies and drier air in its wake.
Satellite imagery shows clear skies prevailing across the forecast area while low clouds lagging behind a secondary cool front to our northeast continues to dissipate in the low-level dry air present in our vicinity. /issued 1018 AM CDT Tue Mar 14 2017/ Morning surface analysis shows high pressure building into the region. Dry high pressure over the region will maintain clear skies and VFR. This high pressure will settle over Ohio River Valley tomorrow evening.
244 PM CDT Tue Mar 14 2017 High pressure anchored over western Minnesota will allow for temperatures to plunge across far eastern South Dakota and western Minnesota this evening/overnight, while a tighter pressure gradient exists across the rest of the forecast area - about 10mb across the state. Mild level warm advection cloud cover could generate some light QPF, however we initially will see a dry layer between that and the low level stratus. Despite the low chance for any measurable precipitation, soundings suggest the main P-type as rain, with sub-freezing surface temperatures.
High pressure will dominate our weather this week, with temperatures well above average and dry conditions for Southeast Arizona. This cloudiness might result in the lowering of high temperatures Wednesday by a degree or two. Otherwise, more of the same the next several days as high pressure aloft brings dry conditions and well above normal daytime temperatures.
121 PM PDT Tue Mar 14 2017 High pressure aloft will continue dry and warm days inland this week, while the marine layer and weak onshore flow keeps the coast cooler, with areas of low clouds and fog at times.
Nam shows a 500 mb trough over the northern plains 12z Thu which moves into the upper Great Lakes late Thu. In the extended, GFS and ECWMF show a 500 mb trough in the western U. and a trough in the upper Great Lakes 12z Fri which remains through Sat.
Temperatures cool, especially inland, late this week and into the weekend as an upper level trough approaches the region. Very little change in the weather conditions today compared to the same time yesterday with high pressure over the region and an upper level low off of the British Columbia Coast.
General broad H5 ridging exists across the SRN US.
1247 PM CDT MON AUG 1 2016 The forecast area will remain situated in southerly flow ahead of a mid level trough in the Dakotas today. HOwever, the main period of showers and thunderstorms will arrive with the surface reflection low and inverted trough overnight.
a cold front remains nearly stationary across southern Converse and Niobrara Counties this afternoon. gusty westerly winds near 30-35MPH and humidities in the low teens are creating critical fire weather conditions for many areas. Going mainly dry for Tuesday as upper ridge axis looks to be overhead.
With 925mb temps in the lower 30s C in central Kansas, southeast winds have been gusty much of the day and helping keep surface temps in check.
254 PM EDT MON AUG 1 2016 Weak low pressure south of New England will gradually drift out to sea tonight through Tuesday as high pressure builds in from the northeast.
Tonight and Tuesday High pressure was still the main surface feature across the western Great Lakes this afternoon. As the high departs to the east, southerly flow ahead of a low and its accompanying frontal boundaries will bring warmer air and increasing moisture to Wisconsin. The chance for storms continues to increase and spread eastward on Tuesday as the warmer and more moist air destabilizes the air mass over Wisconsin while a cold front moves into the state and a mid level short wave passes to the north. with large but flat ridge across the southern half of the country. Trofs move along u. First of these trofs and associated cold front during the period will be moving over area late Tuesday.
(Issued 303 PM CDT MON AUG 1 2016) A ridge axis continues to occupy the Southeast U.
407 PM EDT MON AUG 1 2016 An upper trough will drift slowly east across the state today, supporting mainly scattered showers and thunderstorm into this evening.
even in the high country. Still believe the high terrain will see isolated/widely scattered gusty showers and t-storms form in the next hour or two. As the upper ridge passes over the state tonight. It is over this higher terrain that t-storm chances will be greatest tomorrow after 20z. especially across the northeast corner of the state where cooler air will remain strongly capped.
Expect zonal flow tonight over Northeast Montana as the low in northern Saskatchewan moves into Manitoba. That along with the local area remaining on the cool side of the boundary between the hot air-mass to the south and the cooler air-mass to the north will bring about a slightly cooler than normal night. For Tuesday the next low nudging up against the Washington/BC coast will pinch up a narrow ridge over Montana. This will make the thermal boundary act as a warm front, increasing temperatures back above normal. With increasing instability from the warm front, evening and late night thunderstorms are expected.
Will follow the high resolution short term models and radar trends before press time, but my inclination is to keep sct to likely pops through 00z across SE KY into Bluegrass and sct pops s of I 64 and lowest pops acrs srn IN. Kept the theme from the mid shift keeping the highest POPS up against PAH.
315 PM EDT MON AUG 1 2016 An upper level trough will cross the Northeast and Middle Atlantic states through Tuesday. An associated surface cold front will settle south through VA Tuesday and through NC Tuesday night.
133 PM EDT MON AUG 1 2016 Aviation High pressure will provide dry and pleasant weather today through most of Tuesday.
538 PM EDT MON AUG 1 2016 Weak low pressure south of New England will gradually drift out to sea tonight through Tuesday as high pressure builds in from the northeast.
119 PM CDT MON AUG 1 2016 Surface analysis shows a developing low pressure center over western SD with a warm front extending ESE across IA into the Ohio Valley. Its associated cold front runs NNE-SSW from central Canada through the aforementioned low then into the central Rockies. As such, the cold frontal passage is not expected until the middle of the day tomorrow so this means its associated convection is also slowed down.
Surface lee pressure trough will keep winds up a little. James A widespread upper level ridge across the southern half of the US will continue this week.
306 PM CDT MON AUG 1 2016 Latest subjective surface analysis shows fairly tight gradient across eastern Nebraska between a broad area of low pressure across the western Plains and high pressure across the Great Lakes. a low pressure trough extends from north central South Dakota into the Nebraska Panhandle this afternoon.
150 PM PDT MON AUG 1 2016 High pressure will keep temperatures near normal through mid week.
126 PM EDT MON AUG 1 2016 Upper level trough crossing the Great Lakes region continues moving east and should reach the Atlantic coast on Tuesday. A series of short waves rotating through the base of the trough and a moist air mass will continue scattered to numerous thunderstorms over the next several days. An upper trough extending from the Great Lakes region to the Tennessee Valley will gradually move eastward. At the surface, high pressure over the western Atlantic will extend into the area with lee-side troughing. Afternoon temperatures are well on the way to peak in the low to mid 90s. The upper trough axis over the east coast will push offshore on Tuesday with upper flow becoming northwesterly. An upper ridge will extend across the Plains promoting continued northwesterly flow into the forecast area.
1228 PM CDT MON AUG 1 2016 First calendar day of August appears to be starting off rather quiet as high pressure remains anchored over the Great lakes region. high pressure slips a bit more east as a mid-level low moves east through southern Canada along the Manitoba/Saskatchewan border by early this evening. Push of 850mb moisture transport ahead of the low and warm front expected to fuel scattered/elevated thunderstorms across the Dakotas into MN/IA through this afternoon. but there is some indication among the deterministic models of storms firing again in the afternoon mainly south of I-94 ahead of the warm front from northern IA into northern Illinois.
Orgnl Disc : A weak upper level trof will slowly cross the region tonight through Tuesday. Lows tonight will range from the lower 50s north and mid to upper 50s downeast. The upper trof moves east of the state on Tuesday. High temperatures on Tuesday will once again be well into the 70s to near 80 degrees but a bit cooler along the immediate coast.
Little change can be expected over the next several days, with typical cool temperatures along the coast and slightly warmer than normal temperatures inland. Meanwhile, a shallow but persistent marine layer continues to hug the low elevations of the immediate coastal plain, keeping temperatures very close to normal in the upper 50s to low 60s.
WV imagery shows the upper ridge centered over the Arklatex, w/afternoon temps across West Texas and Southeast New Mexico already above-normal at 18Z, many of which will top out near the triple digits before the afternoon is out. Over the next 24 hours or so, models center the ridge over Texas, and park it there into the extended.
339 PM CDT MON AUG 1 2016 Current water vapor and H5 heights show a rather vigorous trough moving across center Canada with attendant cold front extending southward into the Northern Plains and inter-mountain west. High pressure continues to dominate the weather pattern resulting in hot and humid conditions across much of the region.
All VFR across the region as high pressure continues to dominate this week. Subtropical Ridge builds over Central Texas allowing a drier and subsident airmass to take hold. A slight warming trend is also expected as a thermal ridge moves into our area. Temperatures a degree warmer and dewpoints not mixing out as well as today may allow for more widespread heat indices of 105 to 107 on Tuesday along and east of I-35.
Temperatures for Tuesday will be in the low to middle 90s with heat index values will range from 98 to 104.
Weak low pressure will gradually move offshore today and tonight as a front drifts southward. High pressure will build in from the north during the middle of the week, then move offshore late in the week.
Quiet weather is in store for tonight with upper ridging and a dry airmass in place. The ridge shifts E during Tue. The upper low seen on water vapor imagery off the S BC coast this afternoon, moves into NW MT by 12Z Wed.
Main players are a surface front/density gradient situated over the James River Valley with dewpoints in the lower 70s as opposed to 60F-65F farther west.
630 PM EDT MON AUG 1 2016 High pressure will maintain dry conditions through most of Tuesday. Lows tonight will be in the low to mid 60s with highs Tuesday in the mid to upper 80s.
117 PM MDT MON AUG 1 2016 18Z Water vapor imagery/ RAP Analysis indicated broad ridging in place across southern CONUS with short wave trough moving across northern plains. PV analysis indicted small amplitude trough approaching cwa along the CO and WY border. as convergence along trough axis should increase as next short wave trough approaches. Time lagged HRRR data as well as 00z CAM ensemble really hitting trough axis as primary focus for convective development and for the time being that looks reasonable. With trough passage overhead. Cold front will sweep through the area around sunrise. Expect temps to be 5 degrees or more cooler today.
302 PM EDT MON AUG 1 2016 An upper trough will drift slowly east across the state today, supporting mainly scattered showers and thunderstorm into this evening.
The persistent ridge of high pressure will slowly weaken this week and then will be replaced by a trough of low pressure by the end of the week. Broad ridging over the central part of the southern CONUS is continuing to lose it's strangle hold on central California and is expected to begin moving further eastward as a more progressive pattern takes shape. With this transition the southern stream of moisture moving along the western periphery of the high will also move further eastward.
Brief ridging today has brought warm and dry conditions with overall light winds. Changes come for Tuesday as a strong dry cold front leads to a significant increase in winds by the afternoon hours. Wind gusts of 30-40 mph will be common with some stronger gusts of 45-50 mph possible in favored canyons and along ridgetops especially over Southwest Montana.
Tuesday will see return southeast surface flow as low- amplitute ridging occurs aloft.
While most energetic portion of mid/upper level flow regime remains centered in its summertime favored location of southern Canada, just enough influence from passing waves and their attendant troughs to drum up at least the chance for some much needed showers and thunderstorms through mid-week.
A weak upper level trough was traversing the western high plains region today.
The Lower Ohio Valley short wave will make its way east southeast into the Southern Appalachians tonight bringing a decent chance for showers and thunderstorms.
134 PM EDT MON AUG 1 2016 High pressure will provide dry weather today into tonight.
Still could see some areas of fog develop in areas that received rain this afternoon, especially across the northern Bluegrass where surface ridging will attempt to nudge in early Tuesday morning. Will follow the high resolution short term models and radar trends before press time, but my inclination is to keep sct to likely pops through 00z across SE KY into Bluegrass and sct pops s of I 64 and lowest pops acrs srn IN. Kept the theme from the mid shift keeping the highest POPS up against PAH.
122 PM EDT MON AUG 1 2016 An upper level trough will cross the Northeast and Middle Atlantic states through Tuesday. An associated surface cold front will settle south through VA Tuesday and through NC Tuesday night.
A warmer period ahead, perhaps extending beyond a week. Medium range models show weak northwest flow aloft weakening further with the encroachment of a broad height ridge centered over the southern plains. NAM model progs 925mb temps 2 deg C warmer than today along and west of the MS. Despite slightly cooler afternoon dewpoints, heat indices will likely reach 105 to 107 from the MS River delta, up through far west TN. 12Z model- blended pops for the late week and weekend periods appear a little overdone given that the ECMWF and GFS edge a lobe of the upper ridge eastward into the western Ohio River valley.
239 PM EDT MON AUG 1 2016 A persistent upper level low pressure sytem will keep scattered showers and thunderstorms over the area this afternoon and this evening, some with brief heavy rain.
344 PM CDT MON AUG 1 2016 A weak upper level trough was traversing the western high plains region today.
303 PM CDT MON AUG 1 2016 A ridge axis continues to occupy the Southeast U.
330 PM CDT MON AUG 1 2016 Relatively stagnant pattern with forecast area on edge of active periphery of upper ridge.
A weak upper level trof will slowly cross the region tonight through Tuesday. Lows tonight will range from the lower 50s north and mid to upper 50s downeast. The upper trof moves east of the state on Tuesday. High temperatures on Tuesday will once again be well into the 70s to near 80 degrees but a bit cooler along the immediate coast.
249 PM CDT MON AUG 1 2016 Low pressure will slide through Nebraska overnight with warm front lifting northward across the CWA as southerly winds increase. This warm front should act as focus of scattered thunderstorms, mainly this evening between 00-06z. Later in the evening, the low level jet will increase across northwest Iowa leading to increased shear and lingering CAPE of 2000-2500 J/kg. As the low exits the area to the east on Tuesday, northerly winds will bring in some drier air bringing decreasing clouds through the day. The extra sunshine and better mixing should allow for warmer daytime temperatures than today, with highs reaching 85 to 90. No worries for heat headlines at this time since the western areas where it will get warmer will also be seeing dewpoints 10-15 degrees lower than areas to the east.
233 PM EDT MON AUG 1 2016 A weak pressure trough continues across northern GA. a weakness in the upper ridge will persist through tonight. On Tuesday, the high center currently across the central gulf coast will begin to retrograde into eastern Texas.
Weak ridging aloft will support continued diurnal convection across the area with thunderstorms expected daily. Temperatures will remain near seasonal norms with highs in the lower 90s with overnight lows in the mid to upper 70s. Surface pressure ridge axis was found across central Florida. High pressure dominates the forecast with scattered thunderstorms at night and isolated storms during the day.
250 PM EDT MON AUG 1 2016 WV imagery and RAP analysis indicated a mid/upper level low edging toward cntrl Saskatchewan with a downstream ridge building from the from the Upper MS valley into nw Ontario. srly flowwasincreasing through MN between a trough int wrn North Dakotaand a high pressure from Quebec into lower Michigan. Today, plenty of sunshine/mixing with 850 mb temps around 15C will support max readings into the lower 80s inland with lower temps in the mid to upper 70s along the Great Lakes where lake breezes will develop. Nam shows a 500 mb trough over the northern plains 12z Thu which moves into the upper Great Lakes late Thu. In the extended, GFS and ECWMF show a 500 mb trough in the western U. and a trough in the upper Great Lakes 12z Fri which remains through Sat.
strong H5 ridge center remains over TX through the forecast period with overall warm thermal profile negating any convective development.