Aikyam-Lab/Synoptic-Bench huggingface dataset:
242 AM EDT Sat Aug 12 2017 A slow moving cold front will push southeast through the commonwealth late Saturday bringing another round or two of showers and scattered thunderstorms.
626 AM EDT Sat Aug 12 2017 A cold front approaches the region today and passes through tonight.
Heading into Sunday, a tropical disturbance will continue to round the high pressure and push closer to the Bahamas before turning towards the north and interacting with the trough hanging off the mid-Atlantic coast.
Weak upper low over northeast Montana this morning with a few showers/thunderstorms rotating around the edges of the cwa. This low is expected to sink southeastward through the day, with showers potentially spreading across the eastern portion of the cwa. Upper ridge builds into the state behind the low, with strong thermal ridge along the front range on Sunday. This will result in warmer and drier conditions for Sunday. Synoptic Setup: Long range begins with a hot high pressure over the Lower Intermountain West and a ridge running north out of it through central Montana, Alberta, and the Northwest Territories. To the west A large trough is pushing into Washington and the British Columbia with an infusion of cold air pointed into it from Alaska.
340 AM CDT Sat Aug 12 2017 High pressure over the Great Lakes extends surface ridging over our area today resulting in a very nice Saturday.
For today, the front may begin approaching the northern tier of the forecast area, so this is where the highest pops will end up today.
400 AM EDT Sat Aug 12 2017 A cold front will move east today, while high pressure and dry air build in from the west.
This activity is expected to spread east into the Lower Trans Pecos and parts of the Permian Basin this evening. Models are now indicating that a large scale upper trough will develop across the West as the subtropical ridge shifts in the SE U.
154 AM EDT Sat Aug 12 2017 A cold front will approach from the northwest today and settle into central NC tonight through early Sunday. Weak synoptic scale height falls and modest low to mid-level warm moist air advection on the southern periphery of an upper-level trough centered over Ontario and the Great Lakes vicinity, in-tandem with sheared vort disturbances moving east across the region will support high chance pops of showers and a few thunderstorms overnight. The scattered convection will likely persist well into the night as a sfc cold front attendant to a s/w crossing the eastern Great Lakes drops sewd into our region. Above normal chances for convection, above normal cloud cover and near or below normal temperatures are expected Sun-Tue in assoc/w cyclonic flow aloft and an approaching cold front expected to stall invof central NC.
556 AM CDT Sat Aug 12 2017 230 AM CDT A broad upper trough is currently in place over much of the Great Lakes region.
The low level jet shifts into the eastern Dakotas tonight, and the models differ slightly on where its best focus will be. Total pcpn amounts for the entire today through Sunday night period could range from 1 to 2 inches, but thinking the higher end amounts will need slow moving or training storms. Dew point values have struggled to reach past the upper 50s lately, and precipitable water values stay on the lower end.
Also trimmed another degree or two off the high temperature forecast. Unclear if todays rainfall will have some impact on storm chances for tomorrow night, but as systems are dynamically driven and moisture remains above normal, the higher rain chances late Sunday are justified.
Later tonight and Sunday, drier air will slowly build into the region, courtesy of incoming high pressure.
534 AM CDT Sat Aug 12 2017 Quiet weather on tap in the short term, as high pressure settles across the Midwest through tonight. The area of high pressure will slowly edge eastward early in the week, preventing any meaningful moisture return into our area.
201 AM CDT Sat Aug 12 2017 Quiet weather on tap in the short term, as high pressure settles across the Midwest through tonight. The area of high pressure will slowly edge eastward early in the week, preventing any meaningful moisture return into our area.
The mid and upper level ridge will continue to stretch from west to east across the southern U. The ridge axis is just about right over south central Texas, so we expect little change in conditions from today through Sunday.
HiRes models showing an increase in thunderstorm activity today versus yesterday over the higher terrain and along the Front Range. A short wave trough over southwest Montana will move southeast across Wyoming today. Airmass over the higher terrain and along the Front Range Urban Corridor is somewhat dry with precipitable water values of three- quarters of an inch to one inch. Due to a warmer airmass and increased sunshine, most locations across northeast Colorado are expected to climb into the lower to mid 80s this afternoon. Temperatures tonight should also be slightly warmer with mid to upper 50s. Operational models and a majority of the ensembles show the 500- 300mb ridge axis over Utah Sunday morning.
Expect rapid improvements in flight conditions shortly after daybreak with afternoon showers and storms developing once again ahead of an approaching cold front.
328 AM EDT Sat Aug 12 2017 High pressure will continue to build into the U.
Low pressure off the California coast will maintain mild temperatures through the period with the normal night and morning coastal stratus. Current temperatures are running slightly cooler across the district, with readings mainly in the 50s to lower 60s.
600 AM EDT Sat Aug 12 2017 Low pressure will track northwest of the region Today.
305 AM CDT Sat Aug 12 2017 230 AM CDT A broad upper trough is currently in place over much of the Great Lakes region.
A more active, wetter and cooler pattern is expected for much of the upcoming week, featuring several days of showers/thunderstorms along with mild daily temperature swings as a few surface and upper level systems slide through the region. A meandering upper level low over northeast Montana this morning will swing across the region Sunday into Sunday night, spreading showers and a few thunderstorms over much of the coverage area during this time. Not looking for an overabundance of precipitation due to the lack of associated surface frontal features and the compact size of the upper low.
Models remain consistent transferring the main instability and convective threat to western Baker and northern Harney Counties this afternoon and evening, as a Pacific upper trough comes inland. This is the first significant trough since June and it will bring noticeable cooling to northern and western parts of our CWA Sunday. Highs Sunday will be 10 to 15 degrees cooler on the Oregon side (70s and 80s), and 5 to 10 degrees cooler on the Idaho side (85 to 90 in the valleys, and 75 to 85 in the mountains).
310 AM EDT Sat Aug 12 2017 A cold front will approach from the northwest today and settle into central NC tonight through early Sunday. Weak synoptic scale height falls and modest low to mid-level warm moist air advection on the southern periphery of an upper-level trough centered over Ontario and the Great Lakes vicinity, in-tandem with sheared vort disturbances moving east across the region will support high chance pops of showers and a few thunderstorms overnight. The scattered convection will likely persist well into the night as a sfc cold front attendant to a s/w crossing the eastern Great Lakes drops sewd into our region.
Latest water vapor imagery shows west northwest flow across the Central High Plains and upstream a short wave trough across extreme southern Alberta- Saskatchewan entering northern MT. Elsewhere, an upper level ridge is present west of the short wave trough and is gradually breaking down with an upper level trough upstream in the British Columbia and Pacific Northwest Pacific offshore waters. The short wave trough moving into northern MT in the small hours this morning will continue to track southeastward into the central Northern Plains today then enter the Middle Missouri Valley tonight.
At the surface the high pressure ridge extended into central Kansas early this morning. A split flow pattern develops with the New Mexico wave moving through the southern stream across north Texas and southern Oklahoma today while the upper trough moves across the northern Plains. Instability axis is forecast to be across the high Plains into central Kansas tonight with little to no instability across northeast Kansas. Highs today will again be below normal with highs in the lower 80s. Lows tonight in the lower 60s. At the surface, the CWA will be wedged between high pressure to the northeast and low pressure over Colorado.
Upper ridge remains stationary over the northern Rockies from northern Idaho to northern Utah into southwestern Colorado this afternoon. Water vapor imagery showing a small disturbance moving through the ridge into south central Wyoming this afternoon thats interacting with low level moisture and the tail end of a stationary front on surface analysis. A stronger low pressure system can be seen on water vapor imagery over north central Montana that will have some impacts on us tomorrow. By late Saturday afternoon, upper low near Rapid City with a cold front moving south into Converse and Niobrara Counties. Sunday may be a little drier with upper ridge starting to move into western WYoming.
The upper level ridge will settle over South Texas today and continue over the region through Sunday. Temperatures are expected to be 1-2 degrees warmer over the coastal plains to around 3 degrees over the Brush Country.
1222 AM CDT Sat Aug 12 2017 Northwest flow aloft will be present across western Nebraska tonight as an upper trough in southern Saskatchewan and Manitoba drops into Montana and North Dakota. Weak upper ridging will exist across the Great Basin. On Saturday, a fairly strong upper trough located across Montana eastward through North Dakota, will drop southeast and bring good chances for thunderstorms Saturday afternoon into Saturday night. Thunderstorm chances continue Sunday, behind the northern stream trough, within fairly zonal flow extending west across the central Rockies.
Light east southeast winds are being observed at our land and marine stations, while temperatures are ranging in the low to mid 80s under partly cloudy skies. Rainfall chances will be near climatology (30%) today, with the potential for cloud line development later this morning and afternoon along the Lower Keys.
142 AM EDT Sat Aug 12 2017 A weak cold front will cross the region tonight with scattered showers and thunderstorms found along it this evening. High pressure will build in behind it and bring dry weather Saturday and Sunday. A cold front will continue to move through the region overnight. The cold front is expected to be situated over the southeastern CWA by daybreak Saturday, and an isolated shower or thunderstorm remains possible in this area for the bulk of the morning hours. Fair weather cumulus may be a bit more prolific given the cooler air being brought in aloft during the afternoon.
336 AM EDT Sat Aug 12 2017 Low pressure over the Great Lakes will move north of the region today. with a cold front moving through New England Sunday morning.
A widespread area of showers and thunderstorms are expected to develop across the mountains of New Mexico ahead of an upper level short wave trough. The northwest flow aloft will transition to more of a southwest flow aloft as an upper level trough moves into the northern and central Rockies.
Pattern recognition of an incoming wave riding over a hot surface thermal trough suggests there is a real threat of scattered thunderstorms or at least isolated thunderstorms laying down locally abundant lightning developing somewhere near a feature like this. /Fugazzi 06Z TAFS: High pressure over the region with weak winds will promote continued widespread smoke and haze with occasional MVFR visibilities overnight over the eastern TAF sites. Smoky conditions will decrease Saturday afternoon as a short wave trough moves into the area and winds push smoke out of the region.
Storms will redevelop Saturday afternoon, favoring the higher terrain, but still remaining scattered over all other lower elevations into the late afternoon and evening.
303 AM EDT Sat Aug 12 2017 A crossing cold front will end shower and thunderstorm chances by evening. Dry weather can be expected with Sunday high pressure. A cold front will complete passage over the region later today. Weak high pressure will move over the Great Lakes for Sunday, so dry weather will close the weekend.
444 AM CDT Sat Aug 12 2017 (Today and Tonight) Currently, a mid/upper level high pressure area extends from the northern Baja Peninsula, east into the northern Gulf of Mexico. At the surface, a cold front has slowed, and nearly stalled just south of the I-20 corridor early this morning. Warmer mid level temperatures generally south of a Mertzon to San Saba line is expected to inhibit rain chances for southern areas. For temperatures, will go with similar temperatures south of the cold front, slightly cooler north, with highs generally in the mid to upper 90s.
Surface cold front is making its way SE across the area in pieces, as SDF has already seen a wind shift to NW, but radar fineline and lower dewpoints are still back over southern Indiana. Otherwise, after a cloudy and muggy start, dewpoints will drop off through the day as a bubble of high pressure builds from the Upper Midwest.
A broad upper trough will move across the Upper Great Lakes, with a west/northwest flow across southern Wisconsin. Have used the high resolution HRRR for winds today, that bring more a a lake breeze into the far east. Areas of fog expected tonight as high pressure moves across Wisconsin. Forecast confidence is high: High pressure overhead on Sunday will bring another round of pleasant weather to southern Wisconsin.
230 AM CDT Sat Aug 12 2017 230 AM CDT A broad upper trough is currently in place over much of the Great Lakes region.
Marine clouds will move far inland this morning for a cloudier and cooler day. A weak cold front will produce light rain across the area Sunday putting an end to the recent dry streak.
The better chances for seeing this shallow fog will be generally south of the highway 60 corridor or where the heaviest rainfall occurred yesterday. As the aforementioned H5 impulse continues eastward on Sunday, much of the CWFA will remain dry with the highest probability of showers/storms residing right along the Arkansas and Oklahoma borders. The pesky northwest flow due to the upper level ridge over Texas will begin to flatten and become more southwesterly as the ridge begins to slide eastward across the southern tier states. KSGF/KJLN?KBBG tafs: High pressure will become centered over the Midwest during this period.
323 AM EDT Sat Aug 12 2017 Low pressure will track northwest of the region Today.
347 AM EDT Sat Aug 12 2017 A slow moving cold front will push southeast through the commonwealth late today, preceded by another round or two of showers and scattered thunderstorms.
Longwave trough digging across the western U. will drive the upper level ridge over the region eastward with southwest flow becoming established early in the week.
For Saturday, upper low will continue to drift south toward the region. Deep layer shear, on the other hand, does increase decently as H85/H5 winds increasing a head of that upper low. The period begins with an upper level trough departing the region to the east, with an upper level ridge building in the west.
658 AM EDT Sat Aug 12 2017 A cold front will move east today, while high pressure and dry air build in from the west.
244 AM EDT Sat Aug 12 2017 A cold front crosses today with some showers and storms expected. High pressure crosses to north Sunday.
342 AM EDT Sat Aug 12 2017 A cold front approaches the region today and passes through tonight.
408 AM CDT Sat Aug 12 2017 A broad upper trough covers much of the U. this morning and it is this trough that will bring our next chance of rain.
235 AM CDT Sat Aug 12 2017 230 AM CDT A broad upper trough is currently in place over much of the Great Lakes region.
High pressure along with drier weather will return on Sunday. Very slow moving system with the surface and upper lower over the U. Better shear and increased instability from the upper low will enhance the storms and will bring a somewhat better chance of stronger and approaching severe storms. Following Saturday night's cold frontal passage, a cooler, drier airmass will move in for Sunday on NW winds. Highs will be mostly in the low 70s except mid 70s across the Wyoming Valley. High pressure moves in Sunday night bringing mainly clear skies with light winds allowing lows to drop into the 50s.
Despite dewpoints only topping out in the low 60s, 700mb temperatures are rather cool, between +3 and +7C or about a standard deviation below climo, resulting in about 1500-2000j/kg MLCAPE across the western periphery of the CWA, though with a rapid drop off to the east. Sunday the wave continues slowly east, with isentropic analysis suggesting precipitation organizing/intensifying along a warm front across northeast counties, with a weak TROWAL like feature extending back to the west into the James valley. Coupled with low pressure at the sfc, expect showers and thunderstorms and an overall wet pattern through the week with only brief breaks. Finally, by Saturday high pressure will build in at the sfc and conditions will dry out.
Overnight low temperatures are forecast in the lower to middle 70s. Weak upper troughiness to remain over the E CONUS.
226 AM EDT Sat Aug 12 2017 A cold front crosses today with some showers and storms expected. High pressure in charge Sunday.
High pressure will build across the Upper Midwest this weekend leading to seasonable temperatures and mainly sunny skies.
A low pressure center is making its way through the Great Lakes this afternoon, and the associated cold front has slipped south of Interstate 70 and out of ILXs forecast area. Overnight will be cooler as clear skies and light winds in general set up for some radiational cooling more so than a major difference in air masses behind the front. High pressure remains in place over the Midwest for most of the forecast.
500 AM MDT Sat Aug 12 2017 Upper level analysis has large trough persisting across the eastern half of the CONUS. while ridging remains over the west coast. At the surface, high pressure is located across MN with weak low pressure across MT and WY. Another weak impulse will move through the ridge late in the day, with showers and thunderstorms possible, mainly across northeast WY and southern SD.
411 AM MDT Sat Aug 12 2017 Upper level analysis has large trough persisting across the eastern half of the CONUS. while ridging remains over the west coast. At the surface, high pressure is located across MN with weak low pressure across MT and WY. Another weak impulse will move through the ridge late in the day, with showers and thunderstorms possible, mainly across northeast WY and southern SD.
Skies should be fairly clear elsewhere with perhaps isolated convection fixed along the high terrain during the late afternoon. Temperatures on the increase into Sunday as ridging slides in place from the west, with highs reaching close to 90 by Sunday. A cold front begins to move into central MT by Sunday evening with increasing moisture pushing into the western Mountains.
expect a fairly pronounced upper level low in the aforementioned upper level flow to rapidly progress southeastward. There will generally be northwest flow, but there is a small break in that with a ridge that moves over that gradually changes to northwest flow again.
1210 AM CDT Sat Aug 12 2017 With high pressure dominating the area over the next couple of days, quieter, cooler and drier weather is expected.
/issued 820 PM EDT Fri Aug 11 2017/ Weak trough is in place across the state this evening, and will continue to lift north overnight. Weak ridging will build into the area for the weekend.
210 AM CDT Sat Aug 12 2017 Weekend shaping up to be quite a nice one as high pressure remains the main weather influence for the region.
439 AM CDT Sat Aug 12 2017 Today's upper pattern will remain a bit unusual for mid-August, with a broad low amplitude 592dm 500mb height ridge centered over northwest Mexico, extending eastward through central and southern TX. At the surface, a weak pressure trof along I-40 early this morning will drop south, with light northerly winds prevailing over most of the Midsouth.
355 AM MDT Sat Aug 12 2017 A few showers and isolated thunderstorms will linger across the eastern sections of the forecast area early this morning as the short wave trough that brought them out of eastern Colorado late last evening continues eastward across Kansas. Temperatures are expected to be warmer today than yesterday with highs in the lower to middle 80s and dewpoints in the lower to middle 60s extending from the Nebraska panhandle region along the eastern Colorado border region. This will produce an axis of greater instability extending from western Nebraska through eastern Colorado from mid-day through early evening as a short wave trough aloft sweeps east of the Rockies and across Nebraska and Kansas this evening.
Drier and more stable southwest flow aloft will keep storm chances confined to northwest Arizona Sunday then dry and a little cooler conditions can be expected during the coming week as a low pressure system moves over the western states.
440 AM EDT Sat Aug 12 2017 A cold front approaches the region today and passes through tonight.
607 AM EDT Fri Jun 23 2017 Widespread IFR to MVFR ceilings will start the TAF period as moisture continues to surge northward into Michigan and as a cold front over central Michigan gradually sinks southward. Scattered showers and possibly a thunderstorm will impact the area through about 13Z, before heavier activity and a better chance for thunderstorms arrives ahead of a cold front between 13- 16Z. Gradual reduction in mid level heights through the weekend period, as broad upper troughing expands over the region. This will leave weekend conditions defined as cooler and less humid.
Upper level ridging will build in from the east for today, providing partly cloudy skies by this afternoon with only isolated to scattered convection expected across the area (20-30% PoPs). High temperatures are expected to reach the lower 90s across most of the area, and with muggy dewpoints in the low to mid 70s still in place across the area, heat index values are expected to peak near 100 degrees this afternoon.
Dry and warmer conditions will return as we head into the weekend as high pressure builds across the West.
334 AM CDT Fri Jun 23 2017 (Today and Tonight) Another hot day across West Central Texas, with both the upper level ridge in place as well as the low level thermal ridge. Temperatures look to be a degree or two warmer for many locations, pushing a few more counties into Heat Advisory criteria. A cold front across the Panhandle this morning will sag south and enter the northern and western Big Country late this afternoon, probably after max heating. Slightly cooler tonight behind the front, especially across the Big Country where a little rain may help cool things off as well.
The other significant development in this portion of the forecast will be isolated to scattered showers and thunderstorms that are anticipated late tonight through Saturday as broad 500 mb low pressure forms and persists over the western Gulf of Mexico.
Temperatures will be unseasonably cool and in the lower 70s despite good sunshine. Winds switch to a more upslopish flow from the northeast which will keep temperatures cooler even though skies in the western sections do look to be clear during peak heating. With air warming aloft minimum temperatures Saturday night look to be a bit warmer.
Another hot day today under building upper level ridge. Temperatures this morning running 7 degrees cooler at Travis AFB and 2 to 5 degrees cooler in the Sacramento and Stockton areas.