Aikyam-Lab/Synoptic-Bench huggingface dataset:
1141 PM EDT Sat Sep 9 2017 Strong high pressure will reside over the region through the rest of the weekend. Much drier air is now advancing into Se Mi associated with this high. The upper trough that brought some unsettled cooler weather will continue is progression off to the east and out to sea through today as a strong high pressure system begins to move over the Great Lakes over the next couple of days. Some cooler air is lingering over the region as a more northerly flow aloft remains through tonight. Forecast overnight temperatures will be slightly warmer than this mornings lows where Flint set a record low temperature of 36 degrees.
617 PM CDT Sat Sep 9 2017 An upper level trough currently over the region will slowly push eastward tonight through Sunday morning. The upper level trough will be located over western MN by 18Z Sunday with dry and warm conditions over the CWA. Most of the extended looks warm and dry with an upper ridge in place.
VFR conditions expected throughout the TAF period with high pressure in control. Mostly clear skies and light winds over the land will allow for temperatures to fall more tonight and Sunday night, with lows in the low to mid 60s across most inland locations.
628 PM CDT Sat Sep 9 2017 High pressure is mainly in control over the region through Sunday afternoon. A high pressure system which is currently located the Great Lakes region will slowly drift southeast tonight into Sunday. The western periphery of the high pressure will be over the Mid Mississippi valley and produce light east to southeast winds and drier air across the area on Sunday. These easterly winds will keep temperatures a couple of degrees cooler on Sunday.
1203 AM EDT Sun Sep 10 2017 High pressure centered across the northern lakes with clear skies and light winds. the large upper level ridge (590 mb) will continue to build over the region. A little warmer Sunday with highs in the upper 60s to around 70. Pattern Forecast: Broad ridging encompasses the nation's midsection and northeastward into northern Ontario. though a bit "dirty" with a couple of short wave troughs within and dropping down the front side of the ridge over the Dakotas and lower Mississippi Valley. Long wave trough over the eastern Pacific with a couple of embedded short wave troughs along the west coast of North America. nice pocket of dry air associated with this low over the upper Great Lakes (12z precipitable water values at APX/DTX below 50 percent of normal).
703 PM EDT Sat Sep 9 2017 High pressure over the central Great Lakes and northern Ohio Valley will remain in place through the weekend.
Scattered showers and isolated thunderstorms continue across mainly the higher terrain of southwest Idaho this evening. A cold front remains stalled out across southeast Oregon this evening though it will begin to slowly push southeast as the upper level trough and strong westerly flow aloft moves in overnight.
1114 PM MDT Thu Jul 20 2017 Latest upper air analysis shows the ridge nearly stationary. There were a few weak disturbances in the upper level flow rotating around the ridge. At the surface a warm front was moving north into Nebraska. During the evening a weak upper level short wave trough will move over the west edge of the forecast area. Isolated to scattered storm coverage may accompany this short wave trough. The majority of the storm activity will remain west and north of the forecast area, rotating around the upper level ridge over KS. During the afternoon an upper level short wave trough will approach from the west. Accompanying the trough will be a weak cold front and isolated to scattered storm activity.
249 AM EDT Fri Jul 21 2017 High pressure will bring rain free weather today, along with seasonably warm, humid conditions. An approaching warm front, will bring unsettled weather back to the region this weekend. The lower clouds and fog should burn off towards 8-9 am. This is owing to weak high pressure ridging southward from Ontario and Quebec. A series of embedded short waves will rotate around the base of the upper trough and act in phase with multiple surface features to produce periods of showers and thunderstorms.
627 AM EDT Fri Jul 21 2017 High pressure will bring rain free weather today, along with seasonably warm, humid conditions. An approaching warm front, will bring unsettled weather back to the region this weekend. The lower clouds and fog should burn off towards 8-9 am. This is owing to weak high pressure ridging southward from Ontario and Quebec.
A hot day in store today as mid level ridge remains over the region, centered just to our west.
343 AM MDT Fri Jul 21 2017 Showers and thunderstorms are once again the main forecast concern for today as a cold front drops from north-to-south across the CWA over the next few hours. All models bring this front south into CO by 18z today, suggesting limited convective coverage for areas out side of the higher elevations this afternoon/evening w/the arrival of drier and more stable air. However, there is potential for this front to stall near the Colorado border, which would keep the low- level convergence in the vicinity of the I-80 corridor and support shower/thunderstorm development a bit further north.
A fairly quiet weather pattern is forecast the next several days as weak high pressure system is set up over Idaho.
Ridge at 500 mb was over KS and OK eastward into MO and AR. Weak cold front should continue to sag southward tonight, and some storms possible mainly along or north of that boundary. Lows tonight across much of the area should drop to the lower or mid 70s (but might stay in the mid or upper 70s southern quarter).
A slow moving cold front was dropping south through Indiana and Ohio early this morning.
In fact, the southern tier of the country is dominated by an upper ridge and plenty of hot air that has moved into place aloft over the past few days. Until the upper ridge breaks down considerably, or a larger trof moves into the Upper Midwest later in the weekend, the trend will continue of hot, humid, and best chances for showers/TS confined to areas north of Interstate 74 from the outflow of the northern storms and the perimeter of that convection.
245 AM MDT Fri Jul 21 2017 Latest upper air analysis shows the ridge nearly stationary. There were a few weak disturbances in the upper level flow rotating around the ridge. At the surface a warm front was moving north into Nebraska. During the evening a weak upper level short wave trough will move over the west edge of the forecast area. Isolated to scattered storm coverage may accompany this short wave trough. The majority of the storm activity will remain west and north of the forecast area, rotating around the upper level ridge over KS. During the afternoon an upper level short wave trough will approach from the west. Accompanying the trough will be a weak cold front and isolated to scattered storm activity.
Mostly clear and gradually warmer weather continues into the weekend.
335 AM CDT Fri Jul 21 2017 Upper ridge remains over region, so hot and humid conditions to persist today.
Temperatures are running 3 to 6 degrees warmer than 24 hours ago this morning. Hotter temperatures are expected this weekend as an ridging over the Four Corners extends into NorCal.
312 AM EDT Fri Jul 21 2017 A cold front will cross the area today. High pressure will build across the region over the weekend.
244 AM MDT Fri Jul 21 2017 Latest upper air analysis shows the ridge nearly stationary. There were a few weak disturbances in the upper level flow rotating around the ridge. At the surface a warm front was moving north into Nebraska. During the evening a weak upper level short wave trough will move over the west edge of the forecast area. Isolated to scattered storm coverage may accompany this short wave trough. The majority of the storm activity will remain west and north of the forecast area, rotating around the upper level ridge over KS. During the afternoon an upper level short wave trough will approach from the west. Accompanying the trough will be a weak cold front and isolated to scattered storm activity.
A hot day is expected again across the region as the mid to upper level ridge of high pressure remains anchored from the Central Plains into the southeast CONUS. Nonetheless, a potent wave riding within the stronger westerlies across the Northern High Plains will flatten this ridge while also allowing the surface lee trough to deepen over eastern CO.
223 AM MDT Fri Jul 21 2017 08z surface analysis had low pressure over southeast MT with "cold" front into northwest WY and trough into central NE. Convective complex moving east along trough early this morning.
A mid level circulation/low moving wwd toward the NE gulf wl provide unsettled conditions with slightly cooler temps aloft. Latest model runs do not shift the low-level Atlantic ridge axis quite as far north, but do shift it towards the central FL peninsula. Highs will be low 90s with lows in the lower to mid 70s. The low-level ridge axis is forecast to lie between central/south-central FL thru this time. The low-level Atlantic ridge axis generally around central FL through this time.
Recent development over FSD CWA seems to be related to the low level jet. Much like a couple days ago, the main stories today will be the high heat and the threat for severe storms for eastern areas.
606 AM EDT Fri Jul 21 2017 A cold front will cross the area today. High pressure will build across the region over the weekend.
119 AM EDT Fri Jul 21 2017 Weak high pressure will build over the area through Friday. A frontal boundary is then forecast to set up in the vicinity of the lower Great Lakes this weekend, potentially bringing wet and unsettled weather at times. Clear skies will persist through the overnight hours as weak surface ridging builds into the area. Look for plenty of sunshine to wrap up the work week on Friday, as high pressure will continue to drift east across the lower Great Lakes. A modestly cooler airmass advecting across the region will be offset by greater insolation, and the net result will be temperatures that will be close to what we saw today, with highs in the upper 70s to lower 80s. High pressure to our east will maintain quiet conditions Friday night across our region.
327 AM CDT Fri Jul 21 2017 Upper ridging continues over the southern half of the country today with thunderstorms continuing to be possible across the higher terrain and surrounding plains this afternoon and early evening. The upper ridge will change positions but will still remain over the region through the next 7 days. Thunderstorms will continue to be possible across the higher terrain and surrounding plains with good moisture remaining across the area.
449 AM MDT Fri Jul 21 2017 08z surface analysis had low pressure over southeast MT with "cold" front into northwest WY and trough into central NE. Convective complex moving east along trough early this morning.
332 AM CDT Fri Jul 21 2017 High pressure that has controlled the dry weather over the past few days will begin to break down as upper level flow will start to shift more out of the northwest.
An upper level low centered over northeast Florida early this morning will slide slowly to the west into our eastern Big Bend zones by this afternoon.
VFR conditions will prevail next 24 hours under the ridge in return flow. Most convection will be confined to the higher terrain west of the terminals. Isolated to scattered storms will continue into this evening, mainly across the higher terrain and the adjacent plains. Easterly flow aloft will continue into this weekend as the upper high shifts eastward, and while 850mb temperatures will increase, heights will fall in response to a disturbance that will progress westward across Texas. Thus, temperatures will remain near to just above normal, with rain chances expanding eastward from the higher terrain across the Trans Pecos and Permian Basin.
142 AM EDT Fri Jul 21 2017 A cold front will approach the area tonight and cross through by Friday morning.
337 AM PDT Fri Jul 21 2017 A high pressure ridge will bring seasonally hot weather inland through the weekend.
351 AM CDT Fri Jul 21 2017 Today and Tonight: Mid/upper level high center will become situated over the Mid-South region this morning and continue to provide another hot day for much of the area. Some reprieve from the heat does look possible today as a mid level cold core low over FL slowly tries to move in underneath ridge axis. Over the north and west, better influence from the ridge will suppress most convection and give another hot and humid afternoon.
Smoke will also be an issue for some locations with active fires along the lower Musselshell river.
326 AM CDT Fri Jul 21 2017 (Today and Tonight) Dry and hot conditions in the short term, with the upper level high pressure still centered over the Mid Mississippi Valley.
1152 PM MDT Thu Jul 20 2017 Quick update this evening to introduce pops across the southern tier of the CWA through 6am as cold front crosses the region. A cold front will move through overnight and should be to around Miles City by 6 AM tomorrow.
This low will act to increase thunderstorm coverage over the area today, with storms initiating along the coast and over eastern portions of the area this morning and gradually spreading westward and inland throughout the afternoon. That said, will still likely see temps reach the low 90's in most places, with some spots reaching the mid 90's inland. Dewpoints in the low to mid 70's will maintain heat indices in the 100 to 105 degree range across the area this afternoon.
Expect VFR conditions to prevail across the Rio Grande valley and northern ranchlands the rest of tonight into Friday as the 500mb ridge across the south-central United States continues to provide subsidence across the area. Mostly clear skies will take over tonight with high pressure over the Gulf supporting light southeast winds, and with low temperatures in the mid 70s to near 80 degrees. Mid-level ridging centered over the Southern High Plains with extend south over the area, limiting significant weather in the short term. High temperatures Friday may inch a degree or two higher under the persistent mid- level ridging, ranging from the lower to mid 90s near the coast to just above the century mark inland west.
352 AM CDT Fri Jul 21 2017 At least one more day of hot and dry weather will be in store for the area as the ridge remains in place one more day before starting to weaken.
High pressure will be East Southeast of the region this period. An upper low overhead Today will help to strengthen convection which develops.
404 AM EDT Fri Jul 21 2017 The upper low vicinity of north FL should continue to drift southwest and weaken. The main feature is the upper ridge that will persist and nose eastward across the forecast area.
/26/ Today and Tonight: Mid/upper level high center will become situated over the Mid-South region this morning and continue to provide another hot day for much of the area. Some reprieve from the heat does look possible today as a mid level cold core low over FL slowly tries to move in underneath ridge axis. Over the north and west, better influence from the ridge will suppress most convection and give another hot and humid afternoon.
The cold front continues to work its way through the region this morning, and should be around Miles City by 5am.
600 AM CDT Fri Jul 21 2017 Upper level high pressure will continue to dominate through the period with widespread VFR conditions.
248 AM EDT Fri Jul 21 2017 High pressure will bring rain free weather today, along with seasonably warm, humid conditions. An approaching warm front, will bring unsettled weather back to the region this weekend. The lower clouds and fog should burn off towards 8-9 am. This is owing to weak high pressure ridging southward from Ontario and Quebec. A series of embedded short waves will rotate around the base of the upper trough and act in phase with multiple surface features to produce periods of showers and thunderstorms.
Temps were quite warm with readings in the 70s across the plains and 40s and 50s across the higher terrain. It will be hot once again on the plains, albeit it will likely be a tad bit cooler than yesterday. Expect nearly all of the lower elevations will reach into the 90s, with upper 90s in the lower Arkansas River valley.
1139 PM MDT Thu Jul 20 2017 Drier air has pushed in under the high which has shifted the focus for thunderstorm development across the western and northern portions of the forecast area. though high res models send an outflow boundary southward into the highway 50 corridor which could spark an isolated storm or two. Friday will be a more active day across the district as the upper high nudges eastward a bit allowing the monsoon plume to shift over more of the mountains.
627 AM CDT Sat Aug 5 2017 Central Illinois is right in the middle of a high pressure ridge over the Midwest in the wake of cold front that has made its way down into the south and southeastern portions of the country. Showers/thunderstorms and cloud cover will keep the highs on Sunday in the low 70s.
/issued 306 AM CDT Sat Aug 5 2017/ High pressure remains entrenched across the Mid South this morning and will keep dry and seasonably cool temperatures in place today. A surface warm front will lift north in response to this upper system with much higher humidity levels building over the region. A few strong storms will be possible Sunday afternoon and evening across the region as deep layer shear along the southern periphery of the trough combines with increased surface instability. Increasing clouds expected towards the end of the period late tonight as a cold front returns back north as a warm front across the area on Sunday.
The 9 am subjective surface analysis showed a baroclinic trough from north GA through central MS, and a weak trough along the northern Gulf Coast. Vapor imagery and upper air data showed a trough moving slowly eastward across the eastern CONUS, with the most energetic portion of this trough lifting northeastward into southeast Canada. The baroclinic trough to our north will soon stall and is not expected to be a major factor in our weather today.
717 AM EDT Sat Aug 5 2017 VFR ceilings will give way to clear skies within the next few hours as a front exits the area and high pressure builds in from the west.
As the excessive heat winds down across the region, attention now turns to the potential for thunderstorms as a weak low pressure system moves closer to northwest California. This mid-level moisture has resulted in the development of high- based showers, but persistent dry air in the low levels has prevented all but a few sprinkles from reaching the ground. Chances for thunderstorms will increase markedly tomorrow as the aforementioned low pressure system begins to move onshore. Lightning has been persistent offshore near the center of the low pressure system overnight, which is good evidence of instability aloft that will contribute to the potential for storms as the low moves closer. Weak wind fields near the center of the low will likely yield very slow-moving pop up thunderstorms, likely with accumulating rain in the localized areas that storms manage to form.
Upper low centered around 230 NM W of KUKI this morning is drawing subtropical moisture up through Interior NorCal and into the low. Considerable cloudiness over the CWA will keep max temperatures a few degrees cooler.
1159 AM EDT Sat Aug 5 2017 Mainly dry weather is expected through Sunday under high pressure.
1035 AM EDT Sat Aug 5 2017 High pressure builds over the area through Sunday morning.
940 AM EDT Sat Aug 5 2017 High pressure will skirt across the southern forecast area today, bringing cool and dry conditions, though a stray shower is possible in northern Ohio. Considering the abnormally dry atmosphere needed to be overcome to bring precipitation with the approaching inverted trough, have slowed rainfall onset a bit to late morning Sunday, with western half of forecast area seeing scattered showers by 00z Sunday.
909 AM EDT Sat Aug 5 2017 Mainly dry weather is expected through Sunday under high pressure.
1150 AM EDT Sat Aug 5 2017 A cold front will pass this afternoon, followed by building high pressure through Sunday.
1040 AM CDT Sat Aug 5 2017 Latest surface analysis indicates high pressure centered over east central Illinois late this morning bringing a partly to mostly sunny sky to the area. Forecast soundings not showing much in the way of moisture in the low levels which should keep cumulus develop to a minimum this afternoon. Central Illinois is right in the middle of a high pressure ridge over the Midwest in the wake of cold front that has made its way down into the south and southeastern portions of the country. Showers/thunderstorms and cloud cover will keep the highs on Sunday in the low 70s.
938 AM EDT Sat Aug 5 2017 A cold front passes today.
These showers are pulsing along cloud streets that are markers for the southern and western periphery of a large Atlantic high pressure. The axis of this high pressure is stretching across the Florida Peninsula and over the eastern Gulf of Mexico. Have removed thunderstorm wording from the first period to day due to the low level inversion and amount of dry air aloft. The Atlantic ridge mentioned above will remain in place at least through the end of the week. The Atlantic high pressure remains the major player in the marine forecast.
731 AM EDT Sat Aug 5 2017 A cold front passes today.
642 AM CDT Sat Aug 5 2017 Cold air aloft, upslope moisture advection and a thermal ridge across the Cntl Rockies appear to be fueling thunderstorms across Wrn Neb this morning.
1101 AM EDT Sat Aug 5 2017 A trough will remain near the coast through the weekend. A cold front approaching from the northwest will be near the forecast area today. The front will move back northward as a warm front Sunday. Weak cold front has moved into the Upstate SC at 15z. Overnight lows in the low to mid 70s. The stalled frontal boundary in the area will retreat northward as a warm front on Sunday. Low temperatures both tonight and Sunday night are forecast in the lower 70s.
727 AM EDT Sat Aug 5 2017 Things are settling down with high pressure settling toward the area. Nam shows a 500 mb trough over New England with more troughing in the upper Great Lakes 12z Sun. This troughing remains throughout the forecast period into Tue morning. In the extended, GFS and ECMWF show a 500 mb trough in the Canadian Prairies 12z Tue which digs into the upper Great Lakes on Wed. This trough remains over the area into Sat with it becoming more amplified on Sat. Temperatures look to be slightly below normal for most of this forecast period as a cold front moves through on Wed and then stalls out south of the area through Sat.
Clouds from upper low off northern Calif slowly approaching southern Harney County.
1255 PM EDT Sat Aug 5 2017 Mainly dry weather is expected through Sunday under high pressure.
1119 AM EDT Sat Aug 5 2017 A cold front passes today.
Any cu slow to pop with low level thermal trough shifting east. Still some potential for a shra or tsra with elongated/channelized vort structure swinging through but all in all column is quite dry with MLCAPE on the low side and low level forcing rather weak. Low pressure passes to the south on Sunday. This will be fighting against increased subsidence from mid-level short wave ridging building across southern WI today. While thermal trof and better cyclonic flow shifts off to the east, can not rule out an isolated shower or storm developing this afternoon with MUCape increasing to 500-1K joules. Partly to mostly sunny skies for the bulk of the day should help temperatures warm into the upper 70s most areas but afternoon lake breeze will cause lakeshore areas to fall a few degrees into the low to mid 70s.
520 AM MDT Sat Aug 5 2017 Current surface analysis shows low pressure over southeast WY, with frontal boundary stretching from north central WY to eastern CO. Highs will be in the 70s and lower 80s each day, with today looking to be slightly warmer than Sunday. Potential for severe weather later on Sunday looks minimal at this point, with less instability, good deal of clouds, and slightly cooler temps.