Aikyam-Lab/Synoptic-Bench huggingface dataset:
346 AM CDT Thu Oct 20 2016 Forecast concerns today will be showers/sprinkles ending, clouds today and Friday along with temperatures, then warmer weather for the weekend. Much cooler today with highs in the 50s to lower 60s. Mid level ridging increases with thickening clouds Friday in an area of h7 warm air advection. A wave tops the ridge across the Dakotas into the Upper Mississippi Valley.
315 AM CDT Thu Oct 20 2016 An upper trough over the Central Plains early this morning, will continue to dig east-southeastward with amplification, reaching the eastern CONUS by midday Friday. Patches of sprinkles could affect north-central and eastern Kansas this morning, as the cold, mid- level thermal trough moves across the region. Highs in the low-mid 60s (a few degrees cooler than normal) look on track given some afternoon insolation.
Low pressure and an associated cold front will remain near Indiana into Thursday, then be pushed away by high pressure coming from the west.
Ridging across the Southern US will weaken as a trough of low pressure moves quickly across the Plains States. By the end of the day, a cold front will be approaching the region from the west, bringing a much cooler and drier airmass to the region in the coming days.
Northwest flow will bring dry and cooler than average weather to the area through tonight. More near freezing temperatures will be possible across the plains although it currently doesn't look readings will be cold enough, long enough to warrant highlights. An upper ridge will transition eastward over the area for Friday through the weekend, keeping dry weather over the region and bringing a return of above normal temperatures. Winds should remain light, aside from some breezy westerly winds at times over the higher elevations during the afternoon.
1126 PM MDT Wed Oct 19 2016 The main concern for the short term period will be low temperatures tonight, which have been inching near subfreezing for many lower valleys for the past few model runs. Dry air will continue to take hold of the area as a ridge of high pressure builds to the west. High pressure will continue to amplify going into the weekend, so benign weather will persist.
Heights aloft rise as a transitional low amplitude ridge aloft moves overhead. Relatively large warming trend based on thicknesses and 700 mb temperatures, especially with the ridge aloft strengthening. Another clear and relatively mild night with this warmer than normal airmass and decent surface mixing.
339 AM CDT Thu Oct 20 2016 Upper trof continues to move across the Plains this morning, driving a cold front into N TX/SE OK. Convection associated with this trof/front is all post-frontal, and has continued to lose intensity over the last few hours. In addition to storms, gusty post-frontal winds will usher in a much cooler airmass, which will keep our temps across much of the region in the 70s today. High pressure will settle into the region overnight tonight into Friday, with NW flow aloft to overtake the srn CONUS in the wake of the trof.
Winds behind the cold front may become gusty this afternoon before subsiding this evening and gradually becoming southerly around or just after the end of the forecast period. A cooler post frontal air mass will keep temperatures near or slightly below normal for mid October. Comparing the last several runs of deterministic and ensemble mean guidance for the weekend shows little change of amplitude/position of mean ridging.
545 AM CDT Thu Oct 20 2016 Upper air analysis shows increasingly amplified flow as energy drops into the base of the trough over the central US. Surface analysis shows high pressure over the northern plains with the surface front from Chicago to Kansas City. With the upper trough over the area today, expect clouds to linger through much of the day. This, combined with low level cold advection, will result in much cooler temperatures with highs mainly in the 50s. Only fly in that ointment would be if the upper trough slows causing clouds to linger well into the overnight hours.
504 AM EDT Thu Oct 20 2016 An area of low pressure will move along a frontal boundary today. The frontal boundary will push through the region and cooler air will move into the area for the start of the weekend. An area of low pressure will move across the region today. Northwest of this low more stratiform rain is expected. To the southeast of the low thunderstorms will be possible. As the low moves off to the northeast cooler air will filter into the region and winds will pick up. A strong upper level trough will move through tonight into Friday.
310 AM CDT Thu Oct 20 2016 Upper air analysis shows increasingly amplified flow as energy drops into the base of the trough over the central US. Surface analysis shows high pressure over the northern plains with the surface front from Chicago to Kansas City. With the upper trough over the area today, expect clouds to linger through much of the day. This, combined with low level cold advection, will result in much cooler temperatures with highs mainly in the 50s. Only fly in that ointment would be if the upper trough slows causing clouds to linger well into the overnight hours.
North-northwesterly wind gusts will bring drier and much cooler temperatures behind the front tonight with temperatures dropping well into the 50s.
A secondary cold front further NW of the previously mentioned boundary. However the bulk of our rainfall will come from the actual cold front and upper level wave. Tonight the cold front will move out of the region, and POPs will slowly decrease from west to east toward dawn. The big news will be the colder airmass, as the base of the upper level trough axis swings across KY. This and secondary cold front will lead to a 15 to 20 degree drop in temps for Friday, as temperatures struggle to rise out of the 50s. Cold front remains north of the region this hour and this will be the story through the night.
Dry conditions will prevail across western Kansas through Thursday night as a weak upper level ridge of high pressure moves eastward across the Intermountain West into the Western High Plains during the period. Although a northwest flow aloft will strengthen across the high plains today, a fairly dry air mass will help void precip chances across the region through Thursday night. Considering the drier and cooler air mass filtering southward into western Kansas behind the advancing cold front, look for highs only up into the 60s(F) this afternoon. Another warming trend develops immediately by late week as upper ridge sets in again.
Then, steadier and heavier rain will occur tonight into Friday night, along and just behind a slow moving cold front. Without an all day rain today, temperatures will rise into the low and mid 60s.
254 AM CDT Thu Oct 20 2016 Cold front currently heading into the Davis Mountains and should be south of the border by sunrise. Much cooler temperatures (much below normal) are expected this afternoon due to cool air advection, despite the decreasing clouds.
An upper level trough will swing through the region today, ejecting a stalled frontal system off to the east, but not before providing widespread showers and perhaps a few rumbles of thunder across the area today, with some potential for showers lingering tonight. Will hold onto some lingering pops mainly early in the night tonight, with the remainder of the short term likely to be dry under the influence of high pressure.
203 AM MDT Thu Oct 20 2016 Early morning WV imagery and RAP upper level analysis shows trough in place across the central US, with main mid-upper level circulation near central Nebraska. Trough transitions east of our region today, with H5 ridge building across the Rockies an into the plains.
A cold front will reach DHN/ECP after 06z Fri and winds will shift to west behind the front. Ridging across the Southern US will weaken as a trough of low pressure moves quickly across the Plains States. By the end of the day, a cold front will be approaching the region from the west, bringing a much cooler and drier airmass to the region in the coming days.
/Issued 334 PM CDT Wed Oct 19 2016/ Broad cyclonic flow continues over the Rockies and central/northern Plains today as high pressure shifts out over the far southeast CONUS per water vapor imagery. a cold front has pushed through the Panhandles with strongest northerly winds up to 25G35 knots across the western Panhandle where the pressure gradient is enhanced. An upper level ridge will build back into the southwest. Upper level winds over the Panhandles will be northwesterly becoming more zonal as the ridge shifts eastward through the weekend.
607 AM EDT Thu Oct 20 2016 Low pressure and a crossing cold front will bring widespread rain to the region from late today into Friday. Much cooler weather will follow for the weekend. The warm front will continue to lift north today as a midlevel trough continues to dig in the Mississippi Valley. As low pressure rides up the Ohio Valley later today along the advancing cold front, showers and some thunderstorms will advance across the area mainly after 18Z. The frontal precipitation will drift eastward Friday morning with additional showers developing behind the boundary in the strong cold air advection and passage of the upper level trough axis. Much colder weather will follow for the weekend as the upper trough develops over the Eastern CONUS.
600 AM CDT Thu Oct 20 2016 Post frontal showers and storms have moved generally east of the highway 65 corridor early this morning. Some drizzle or light shower activity can't be ruled out later this morning and into the afternoon, especially near the Highway 54 corridor as a vort lobe from the passing short wave moves overhead.
337 AM CDT Thu Oct 20 2016 Cold front is making its way southeast across the Ohio River early this morning. Most of the shower activity will push southeast of the region by tonight as high pressure nudges east toward MS River Valley.
The upper ridge that has been dominating area weather recently will be shifting out of the region today. allowing a cold front to approach from the northwest. Dew points will in the low 60s ahead of the front and with good diurnal heating.
115 AM EDT Thu Oct 20 2016 A warm front will slowly approach from the south today. A Cold front will move through late Friday with showers likely. Low pressure deepens over Maine bringing gusty winds and colder temperatures to the region Friday night through the weekend.
At 3AM, the cold front was continuing to push southward at 25 mph and was located just south of San Angelo northeast through Stephenville. With dry air and high pressure building in quickly behind the front, mostly clear skies and breezy winds will be in store for most of the area beyond 18Z today. Highs today will range from the mid 70s on the Plateau and Hill Country to mid 80s in the Coastal Plains and Rio Grande Plains due to the later arrival of the cold front.
Winds will shift to the northwest behind the cold front above 10 knots with some gusts between 17 and 20 knots, with the possibility of post-frontal MVFR or IFR stratus in the planning period. 56/GDG A cold front will bring a short period of shower and thunderstorm chances on Thursday. Friday will feature cooler but breezy conditions.
241 AM EDT Thu Oct 20 2016 Warm high pressure over the region will weaken today. A cold front will cross the area Friday morning.
Temperatures were holding steady in the low to mid 70s. An upper level low across the central United States will continue to dig southeastward over the next 36 hours allowing a strong cold front. The cold front should reach interior southeast Texas this afternoon and swiftly move across the rest of Texas and Louisiana later this afternoon into the early evening. Rains will end a short time after frontal passage with high pressure building into the region tonight through the weekend.
A cold front will move over Western Washington this morning. Shower activity will increase Friday as an upper level trough moves inland.
Once winds increase after sunrise, they will be from the northeast, being affected by a prefrontal trough across the region. This trough will likely spark areas of showers late morning into early afternoon.
A drier but much cooler airmass will settle into the area for the weekend. An upper level trough will pivot east across the region Thursday into Friday. This will help push the cold front east through our area Thursday into Thursday night. This will result well below normal temperatures with highs on Friday only in the low to mid 50s expected.
351 AM EDT Thu Oct 20 2016 Digging upper trough and fairly sharp short wave sweep into the region by late this afternoon. Associated cold front enters the northwest by late in the daytime period. Strong northwest flow pattern sets up Friday with cooler and drier airmass quickly sweeping across the forecast area on gusty northwest winds. it appeared we would may have a deep closed upper low that would keep precip chances in through the first half of the weekend. Nothing of the sort is advertised now though with a progressive frontal passage allowing for upper low to transition to the Carolinas and dry air to filter in quite readily to the area. Upper 30s possible for the higher elevations Sat morning and then more widespread.
Dry weather with comfortable daytime highs will continue Thursday and Friday as strong high pressure and light winds persist over northern California. Temperatures will trend cooler and closer to normal by this weekend as the high pressure weakens.
An upper ridge that has been dominating area weather recently will be shifting out of the region early in the TAF period. As the high exits the area. a cold front will approach from the northwest.
High pressure will build over the region leading to dry conditions along with above normal temperatures into the weekend.
Scattered showers and thunderstorms will remain possible mainly over Southeast Oklahoma and Northwest Arkansas tonight as a cold front continues to push southeast through the region. Cold front continue to make slow but steady progress southeastward with convection remaining in its vicinity.
Although the low levels will be drying out today the light rain over northwest MO early this morning associated with the upper level trough may move into portions of northeast and central MO late this morning and early this afternoon before completely dissipating. Much cooler temperatures are expected today and tonight with low level cold air advection behind the cold front leading to only a small diurnal rise in temperatures.
223 AM MDT THU OCT 20 2016 A cold front will move through southern New Mexico and west Texas this morning bringing windy and cooler weather across the Borderland today. High pressure aloft will result in warmer weather Friday through the weekend. A cold front is moving southward through southern New Mexico and far west Texas early this morning as cooler Canadian air enters the region.
Skies were mostly cloudy and temperatures were quite mild, ranging from the middle 60s to the lower 70s. After some record-setting heat yesterday, things will finally start to cool off today, as a cold front sweeps in from the west. at 07z this morning, a cold front was poised just to our northwest up near Paducah, Kentucky. Although skies will clear from the west tomorrow, the sun won't be much help in warming things up in our new cooler air mass. Highs on Friday are only forecast to be in the lower to middle 60s in areas west of the Cumberland Plateau, with clouds helping to keep temperatures along the Plateau from climbing past the upper 50s.
As we move into the pre-dawn hours, coverage of showers and perhaps a few storms will become more likely over the region as mid level trough axis will begin to amplify over the eastern Plains and mid Mississippi River Valley. Mid level cap evident at 600mb may begin to erode to allow for better coverage, along with increasing lift ahead of the trough axis. Temperatures will remain mild tonight ahead of the cold front with lows in the upper 60s to lower 70s. Lows tomorrow night will be much cooler, dropping into the 40s.
/issued 815 PM EDT Wed Oct 19 2016/ Another quiet night is expected across the forecast area with high pressure in place both aloft over the southeast and offshore the eastern seaboard at the surface. High pressure centered to our northeast will keep a northeast to east wind flow in place through tonight and Thursday, with an easterly surge increasing winds to exercise caution levels for a few hours overnight into early Thursday.
Latest WV imagery shows an upper low near 150W 50N with a good fetch of moisture spreading across the northern Pacific into the northwest U. This wave will likely keep clouds across eastern portions of central ND into the afternoon, while skies clear west with upper ridging building into the area. Expect temperatures to range from the low to mid 40s over the Turtle Mountains, to the mid and upper 50s west and south central. Went a few degrees warmer than guidance over the western half of the CWA today, closer to the numerical guidance.
Cooler air will spread into the area Thursday night with high temperatures Friday afternoon only reaching the lower 50s. Much cooler air will spread into the area tonight.
750 PM EDT SAT AUG 6 2016 A cold front will push offshore this evening.
This Evening Through Sunday Night Upper level analysis has upper ridge over the central CONUS with closed low over Vancouver Island off the Washington coast. At the surface, high pressure resides across southern Minnesota with breezy east-southeast boundary layer flow across much of the area. It will also be a bit warmer, with highs in the 80s across the plains, some 70s across the Black Hills. There looks to be at least a little better chance for thunderstorms in the afternoon and evening across northeast WY and the Black Hills compared to today as moisture and instability increases, and southwest flow develops behind slowly exiting ridge.
However, more showers and thunderstorms will begin to develop starting late this evening across the central Plains as a low level jet stream strengthens ahead of an approaching short wave trough. Temperatures on Sunday should be warmer than what we saw today, but still a bit below normal due to cloud cover and precipitation.
Otherwise, expect breezy southwesterly winds tomorrow ahead of the trough.
500MB ridge axis will remain upstream of our area which will keep us in the relatively cooler and drier air compared to the recent heat and humidity we've experienced.
Water vapor imagery continues to show short waves through the Rockies in monsoonal flow and southwest of the WA/BC upper low. However the Missouri River mid level ridge is expected to keep any sufficient forcing from reaching Iowa this far east. Some mid clouds and weak precip may bleed through the ridge, but stability and cool advection below will keep anything mainly mid level and aloft and the forecast dry. Our current Missouri Valley weak short wave ridge will slowly drift east as the pattern gradually amplifies and the western CONUS trough develops. Eventually the current WA/BC upper low will become progressive along the US/Canadian border lowering heights through the Midwest. By Sunday into Sunday Night sufficient forcing may top the Plains ridge just bringing some weak precip into southwest IA.
1018 PM EDT SAT AUG 6 2016 A cold front will push offshore this evening.
A cold front that is nearly stationary is stretching from the panhandle of Texas all the way NE through the northeastern states and is slowly sinking south. Ahead of that, a convergence boundary/pre-frontal trough is extending through central MS, providing the focus for the thunderstorms that are forming to the west. Synoptically speaking, a weak upper low will cut off around Florida between ridging over the Atlantic and ridging building in from the west by Sunday afternoon.
801 PM EDT SAT AUG 6 2016 High pressure will bring cooler and much less humid conditions this weekend.
The stratus will likely have an impact on high temperatures Sunday, and have trended toward the cooler model guidance. Highs will range from the lower 70s southwest to near 80 degrees far north.
640 PM CDT SAT AUG 6 2016 214 PM CDT Late this afternoon: High pressure centered across the Upper Midwest stretching south through the Central Plains, which is allowing a light gradient over Northern Illinois and Northwest Indiana this afternoon. Closer to the Lake temperatures will remain a few degrees warmer in the middle/upper 60s. Sunday: High pressure continues to influence the region, which will allow a light and variable surface wind once again to start the day. Temperatures will be similar to Saturday, with highs in the lower 80s, and around 80 for areas adjacent to Lake Michigan.
This has prompted the lowering of PoPs throughout the night. This will bring slightly cooler air to the forecast area.
1042 PM EDT Sat Aug 6 2016 A cold front continues to advance across the North Country which is triggering a few isolated showers mainly across Vermont this afternoon. Then cooler and more pleasant temperatures and humidities will return this evening and through the rest of the weekend. Min temps overnight should drop into the low to mid 50s, except around 60F near Lake Champlain. Sunday should be somewhat of a repeat of today with the 500mb ridge to our north dominating the weather pattern.
640 PM CDT SAT AUG 6 2016 Aloft: A subtropical high was over TX with a ridge extending NNW to MT. Trofs were over the Wrn and NE USA/Ern Canada. This high will slide SE out of Canada into MN tonight and the Great Lakes tomorrow. The low- lvl jet should maintain or even expand tstm coverage. Aloft: The trof over Ern Canada/NE USA is fcst to lift out. allowing the ridge shift E. The W coast trof will gradually drift inland. The trof will deamplify Thu. the mean ridge will relocate to the Wrn USA with NW flow developing by Sat. The front should surge S and cross the fcst area Thu as the low heads E. Then turning a little cooler than normal behind the cool front Thu.
Chattanooga Airport, TN 74 91 73 92 / 30 60 40 60 Knoxville McGhee Tyson Airport, TN 72 90 72 91 / 30 50 30 50 Oak Ridge, TN 72 88 72 90 / 30 40 30 50 Tri Cities Airport, TN 69 88 68 87 / 30 50 30 50.
Scattered to numerous storms have formed over the High Plains. Some of south-central Oklahoma will see cooler temps this afternoon with the scattered storms but to keep things simple just kept it going.
Tonight and Sunday Canadian high pressure will bring overall quiet weather to the area this weekend. A few overnight low temperatures dropped to near 50 this morning and expect a few degrees cooler tonight over some northern Wisconsin climatological cool spots. Sunday Night Through Saturday An upper ridge will drift into the northern plains and western Great Lakes region for the early part of the new work week.
952 PM EDT Sat Aug 6 2016 A cold front is moving across the area tonight. High pressure will build south into the region in the wake of the front. The cold front should clear the area enough by Sunday morning to have minimal impact on the day and bring about dry conditions.
Some of south-central Oklahoma will see cooler temps this afternoon with the scattered storms but to keep things simple just kept it going.
With the higher rain chances and clouds, I have temperatures a couple of degrees lower for Sunday.
Along and north of the Ohio River the drier air has really begun to move in with dewpoints in the lower to mid 60s across central IN into portions of southeast IN. The cooler and drier air will filter south across the region tonight.
An area of low pressure will move through the area tomorrow afternoon shifting southeasterly winds to more of a northeasterly direction. Highs tomorrow are forecasted to range from the lower 80s across northern Kansas to lower 90s along the KS/OK border.
With the continuing presence of high pressure through the night, areas of patchy dense fog are possible, especially in favored low-lying areas. Overall, thinking it will be very difficult to receive measurable rain due to a very dry vertical layer between 900-700mb trapped beneath sfc-700mb high or ridge axis.