Aikyam-Lab/Synoptic-Bench huggingface dataset:
343 PM EDT FRI MAY 27 2016 A warm front will lift north of the area this evening. A weak cold front will cross the region on Saturday.
Freeze warning will also be dropped here in the next hour or so as temperatures climb above freezing. Also added a chance of rain and freezing rain to teh southwest where bowman radar has shown some showers. Main concern in the short term will some accumulating snow with a chance for a wintry mix of snow, rain, freezing rain and sleet across the west central this morning. The precipitation is expected to form as a fast moving but weak short wave trough moves along an east west baroclinic zone and associated frontal boundary from southeast Montana into northwest South dakota. As for the mixed precipitation the Metro model forecasts road surface temperatures along I-94 in the mid 30s so do not anticipate the freezing rain/sleet will be very impactful.
602 AM CDT SAT OCT 8 2016 A 1027 mb high pressure center over eastern KS will drift slowly eastward over the next day bringing increasingly light winds and clear skies to central and southeast Illinois.
926 AM EDT Sat Oct 8 2016 A cold front will spread showers across NY and PA through this afternoon. Cooler weather will settle into the region for the beginning of the new week. Farther upstream, another line of showers just entering western NY along the actual cold front and that will move east into the area this afternoon. Though the high moisture levels are in place for beneficial rains, the cold front will push through the I-81 corridor this afternoon, bringing an end to the precipitation and closing the window of opportunity a little too early. Much cooler air will filter down from Canada beginning this evening.
/Issued 304 AM CDT SAT OCT 8 2016/ A southeast to northwest oriented upper ridge early today will shift north and east by late today as an upper trough approaches the Panhandles from Baja California and northern Mexico. This upper trough will track north and east across the southwestern states.
716 AM EDT Sat Oct 8 2016 A cold front will move through the area today.
849 AM PDT SAT OCT 8 2016 Hot and dry inland through Sunday with a weak ridge of high pressure aloft.
1104 AM EDT Sat Oct 8 2016 High pressure will move east today. A cold front will slowly approach later today, and slowly pass through tonight through Sunday night.
1047 AM EDT Sat Oct 8 2016 Sunshine will increase this afternoon outside the higher elevations where clouds will hold all day.
Because of considerable cloudiness, temperatures are only in the lower to mid 80s along the island chain.
1235 PM EDT Sat Oct 8 2016 High pressure will move east today. A cold front will slowly approach later today, and slowly pass through tonight through Sunday night.
608 AM CDT Sat Oct 8 2016 Weak warm frontal boundary along the Missouri River Valley this morning will lift north towards the I-90 corridor. Given temperatures will be marginal and temperatures will be cooler this morning, will hold off on a second period headline for now. With warming thermal profiles, highs will range from the lower 60s through east central SD and southwestern MN to lower 70s over south central SD. Lows will only drop into the lower 50s across the area.
These clouds should generally be at VFR levels, and while a rogue MVFR cig can't be completely ruled out, the lowest clouds should remain south and west of the terminals today. Aloft areas of high clouds were spilling in from the southwest downstream of troughing and a few distinct areas of lift noted in water vapor imagery. Filtered sunshine should yield decent warming which will allow highs to climb into the lower and middle 70s for most spots. The upper trough will swing across the area on Sunday, bringing mostly cloudy skies and a chance of mainly rain showers, with some isolated thunderstorms also possible.
1011 AM CDT SAT OCT 8 2016 A cold front has moved into the coastal waters this morning. This will usher in cooler and drier air for the region through the weekend. Cold front has moved across terminals and high pressure from the Plains will continue to build into the region through the forecast period. /issued 256 AM CDT SAT OCT 8 2016/ Cold front has moved through the area this morning with the exception of lower Acadiana. It will be slightly cooler today in the wake of the front with a little increase in winds and dry air.
1119 AM EDT Sat Oct 8 2016 High pressure will push slowly east across the region through the first part of the upcoming week. Cold front has pushed off to the east.
711 AM EDT Sat Oct 8 2016 High pressure will move east today. A cold front will slowly approach later today, and slowly pass through tonight through Sunday night.
955 AM EDT Sat Oct 8 2016 A cold front will move east of the area today.
951 AM EDT Sat Oct 8 2016 A cold front will approach from the west today then cross the area tonight.
646 AM CDT SAT OCT 8 2016 As upper level troughing continues to lift across the eastern CONUS, upper-level subsidence continues to spread across the region this morning.
737 AM EDT Sat Oct 8 2016 VFR conditions as high pressure builds in behind Hurricane Matthew. This high will bring a drier air mass to the region, reducing the chances of precipitation to less than 20 percent for the next several days. At this point, the guidance must sense the collective tropical cyclone fatigue of Floridians as it has trended weaker with the last few runs in the mid-week solutions, but some extra rain chances are look a good bet no matter what comes of Matthew's classification status.
Current observations show the cold front draped from Randolph county down to Marengo County. The highs for the day are still expected to be 90s in the southeast and high 70s in the northwest. Winds have picked up due to the combined effect of the cold front and Matthew tracking to our northeast. Tonight as the cold front continues to push southeast and daytime heating begins to wane, temps will quickly drop as cold air advection and radiational cooling will then be the dominate factor in the environment. A cold front was moving across central Alabama early this morning. The remainder of the area will see relative humidities drop into the lower 30s this afternoon with the same gusty winds.
605 AM CDT SAT OCT 8 2016 A mid-level trough centered from Ontario to the lower Ohio Valley early this morning will continue east today with building upstream heights from the northern High Plains to mid Missouri Valley. Other than high temperatures a few degrees cooler on the poleward side, this boundary will have little impact on sensible weather.
Daytime highs will reach the upper 80s most areas, esp the coast, given the offshore (west) flow, which is a bit warmer than climo averages in mid 80s.
1003 AM CDT Sat Oct 8 2016 Post frontal conditions continue to dominate our region this morning with cooler temperatures and drier dewpoints.
655 AM CDT Sat Oct 8 2016 A quiet and chilly night is underway early this morning, with 2 AM temperatures in the low to mid 40s under clear skies. Expansive high pressure will remain in control across the region into the middle of the week, with highs in the 70s and lows in the upper 40s and low 50s.
A weak trough over the desert southwest will result in an increase in moisture over southern Utah this weekend with a warming trend. Baggy upper level trough over the desert southwest will move slowly east this weekend while the more active northern branch of the westerlies remains centered along the U.
Chattanooga Airport, TN 79 51 76 51 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 76 48 73 45 / 10 0 0 0 Oak Ridge, TN 76 47 72 47 / 10 0 0 0 Tri Cities Airport, TN 70 43 66 39 / 40 10 0 0.
739 AM EDT Sat Oct 8 2016 Rain and drizzle will end this morning owing to dry and cooler weather the balance of the weekend.
639 AM CDT SAT OCT 8 2016 The region will be under the influence of NW flow aloft on the backside of the trof today. 2% The expansive high pressure system will continue to dominate the region tonight. Upstream readings within the ridge across KS suggest lows in the 40s, and I wouldn't be surprised to see a few spots in the Ozarks bottom out in the upper 30s. The high pressure system will then begin a slow retreat starting on Sunday and continuing into the early week.
/issued 737 AM EDT Sat Oct 8 2016/ VFR conditions as high pressure builds in behind Hurricane Matthew. This high will bring a drier air mass to the region, reducing the chances of precipitation to less than 20 percent for the next several days. At this point, the guidance must sense the collective tropical cyclone fatigue of Floridians as it has trended weaker with the last few runs in the mid-week solutions, but some extra rain chances are look a good bet no matter what comes of Matthew's classification status.
Temps and dew points inland have decreased into the 60s, with the Lower Valley lagging as cooler air filters in. Surface obs from around the RGV indicate that the cold front is just passing over the BRO area this morning with light north to northeast winds building over Deep South TX in its wake. The short term model guidance maintains surface and mid level ridging over the area through Sunday with the cold front gradually pushing south of the area. With the ridging prevailing over the region the atms will be gradually drying out and stabilizing with time reducing the conv potential a bit. Will opt for temps closer to the NAM/ECMWF numbers as believe the cooler GFS number are a bit overdone.
Surface obs from around the RGV indicate that the cold front is just passing over the BRO area this morning with light north to northeast winds building over Deep South TX in its wake. The short term model guidance maintains surface and mid level ridging over the area through Sunday with the cold front gradually pushing south of the area. With the ridging prevailing over the region the atms will be gradually drying out and stabilizing with time reducing the conv potential a bit. Will opt for temps closer to the NAM/ECMWF numbers as believe the cooler GFS number are a bit overdone.
Satellite is showing a low cloud deck draped across the northeastern sections of the CWA which is holding in heat and keeping temperatures underneath it near or just above freezing. Upper trof over northern BC will slowly rotate south and east during the weekend with slight ridge building toward the northern plains. Overrunning precipitation is possible near the Canadian border this evening as a warm front lifts across the state and a weak impulse slides east along the border. A cold front is expected to sweep across the state Sunday night in advance of the upper trof.
1250 PM EDT Sat Oct 8 2016 A cold front will approach from the west today then cross the area tonight.
929 AM CDT SAT OCT 8 2016 High pressure axis extending over central Illinois is keeping skies clear this morning. A 1027 mb high pressure center over eastern KS will drift slowly eastward over the next day bringing increasingly light winds and clear skies to central and southeast Illinois.
/ISSUED 310 AM CDT SAT OCT 8 2016/ The cold front which pushed through the area yesterday stretched from the Ohio Valley to the mid and upper Texas Coast this morning. Cooler and drier air continues to fill in behind the front, as advertised by the 55 to 60 degree temperatures and generally lower and mid 50s dewpoints. A couple of locations reported a slight drop in visibility due to the low temp/dewpoint spread, but the continued infiltration of a drier airmass and 5-10 MPH wind speeds should preclude fog formation. Skies had also become clear due to the combination of the dry air and subsidence from a mid level ridge.
Cold front has moved across terminals and high pressure from the Plains will continue to build into the region through the forecast period. /issued 256 AM CDT SAT OCT 8 2016/ Cold front has moved through the area this morning with the exception of lower Acadiana. It will be slightly cooler today in the wake of the front with a little increase in winds and dry air.
Lee side troffing will increase tonight with a corresponding increase in gap winds from Livingston to Nye overnight.
1031 AM MDT Sat Oct 8 2016 Flat upper ridge over the area this morning will shift east into the plains today/tonight, as weak upper trough lifts northward from the desert sw. Trough will produce increasing high level cloudiness today, and some very isolated thunderstorms will be possible near the NM border in the late afternoon as low and mid level moisture increases. As trough lifts out overnight, shower chances will slowly creep northward across the area, with greatest chance for measurable precip over the San Juans by early Sunday morning. There is some modest CAPE associated with the trough, so will leave mention of ISOLD TS during the afternoon and evening hours. Temps Sunday will be in the mid to upper 70s across the Plains, and 60s for the high valleys.
This offshore wind will result in the highest waves out toward open water.
622 AM CDT Sat Oct 8 2016 249 AM CDT Quiet fall weather is on tap for the weekend with a notably cooler and drier air mass in place. Early this morning, high pressure is centered across the mid Missouri Valley with ridging extending into the Great Lakes. Surface dew point depressions of 20 to 25 degrees and strong subsidence through the column with mid/upper level ridging building across the upper Midwest will result in sunny skies through the day. Expect afternoon highs in the low 60s north to mid 60s south. Another cool and clear night is expected tonight with temperatures outside the urban heat islands falling into the low to mid 40s. A few of the low lying spots west of the Fox River Valley could drop into the 30s.
546 PM EDT FRI AUG 19 2016 High pressure centered over the region will shift offshore tonight and remain anchored off the coast through Saturday night.
This pattern looks to continue through the weekend, with a 500mb ridge building over the region. Even those PoPs are on the low end of likely, sitting in the 50 percent range.
Meanwhile thunderstorms will increase across Kansas later this afternoon in advance of an approaching cold front. These storms will push into the Ozarks region tonight as the front pushes steadily southeastward in association with a pronounced upper level trough swinging into the central U. Showers and thunderstorms will persist into Saturday morning as the cold front makes it way across the region.
As additional disturbances glide around the periphery of the weakening upper-level ridge, widespread development of showers and thunderstorms are expected this afternoon.
A ridge of high pressure will be the dominant feature over the Northern Rockies through the weekend.
Temperatures will be forecast to be a bit cooler over the NW areas Saturday night due to the rain, but about the same near the coast and NE.
356 PM EDT FRI AUG 19 2016 A short wave trough is currently moving through Tennessee and southern Kentucky, helping to initiate scattered to numerous showers across mainly our southern locations. Temperatures are currently ranging from the mid 70s under heavier cloud cover, to the lower 80s, where some sun has been noted. As we head into Saturday, a deepening trough axis will shift east across the Plains and into the Mississippi Valley.
Southwesterly flow aloft and southerly flow at the surface will bring Gulf moisture into the Ozarks through today as a cold front approaches the region. The cold front will move into the Ozarks overnight tonight into early Saturday morning with precipitation expected across the region in advance of the front. THe cold front will move through the region during the morning hours Saturday and will move south into Arkansas by early in the afternoon.
Otherwise, the main main cold front will be working its way south with PROB30 groups added for all TAF sites. The main cold front should be through most, if not all TAF sites by 12Z Saturday. Winds behind the cold front will shift to north to north-northeasterly between 10 to 15 kts with gusts over 20 kts possible. An upper trough will track east out of the central and southern Rockies today and tonight. the cold front and increasing chances for convection is the main reasons for max temps being lowered a category or so today.
Lows will once again be in the low/mid 70s. Westerly to southwesterly flow aloft will continue across the southeast with the upper ridge over the eastern Gulf and Florida Peninsula. As the upper trough deepens across the Upper Midwest and Great Lakes States, a cold front will push southeastward over the weekend.
201 PM CDT FRI AUG 19 2016 Early afternoon surface analysis indicated a cold front from northern IA into northern KS. The upper air analysis did indicate that the better flow was trailing the cold front limiting effective shear, and the orientation of the cold from northeast to southwest along the deep-layer shear vector suggest any organization to the thunderstorms will likely be linear. We will also see a stronger cold front associated with the stronger trough that will bring in much cooler and drier air, along with gusty northwest winds overnight. A touch of fall is likely on Saturday night with some upper 40s possible in the better radiational cooling locations, but everyone should see overnight temperatures drop into at least the lower to mid 50s.
A better push of cooler/drier air and a reinforcing shot of northwesterly winds remains off to the northwest with that second disturbance.
This initial front will have all the low level moisture to work with, and by mid afternoon convection should erupt along it from north central KS to the Arkansas River. Much cooler temperatures can be expected in the wake of the front with highs in the upper 70s Saturday.
403 PM CDT FRI AUG 19 2016 Afternoon water vapor imagery shows a mid/upper trough over the Dakotas. Higher chances arrive overnight as the trough axis enters western MN. Have centered the highest precip chances between 06Z and 18Z for MN, and through 21Z for WI counties. Due to the trough being centered overhead and accompanied by extensive low cloud cover and precip on Saturday, high temperatures will likely be the coolest we have experienced since around the 1st of June, which is around 10 to 15 degrees below normal for this time of August.
Main forecasting challenge in the near term revolves around precipitation chances tied to a secondary cold front this evening. The boundary and associated precipitation threat is shown to cross the cwa this evening as an upper trough digs south across the northern plains. East of the highway, lower 50s will prevail owing to cloud cover. Otherwise high pressure builds behind the front bringing dry and cool conditions for Saturday. The latest guidance supports highs in the lower to mid 70s across the cwa.
Deep layer high pressure was settled across the southern CONUS and northern Gulf Coast today.
Northwest flow aloft will prevail across the Central Plains on the backside of the upper level trough moving into the Mid Mississippi Valley Saturday night.
Martin UPDATED 1753Z High pressure at the surface along with dry mid and upper level air working in from the north will allow for gradual clearing of the low clouds and mtn obscurations from north to south.
A few embedded shrtwv trof are evident in water vapor imagery, one lifting up thru the BB region and another S of El Paso City. Otherwise convection across the Lower Trans Pecos continues to expand per cooling IR cloud tops and drifting NE. We have accounted for this thru 06Z with high end chance/low end likely PoPs, updates may be needed later to the lower PoPs before 06Z? Attention then shifts to a cold front that will arrive btwn 12Z-15Z across the N and 15Z-18Z across central PB Sat. A persistent mid level trof in said SW flow aloft will edge E INVOF wrn Hill Country, but Mon it will get caught up in stronger sly flow W of broad anticyclone and move N-NW.
Given the high amounts of moisture into the mid atmosphere, not as much lightning has been realized with most of the heavier showers. Highs so far have risen into the mid to upper 80s in the rain-free spots, and in the low/mid 70s in/near shower activity. The approach of a cold front will keep high rain chances going Sat evening.
High pressure moving through will keep conditions dry however. Flow aloft continues from the northwest but will slowly back around to the west as the West Coast ridge shifts east behind the departing trough.
The main cold front ran from northeast Wisconsin to a weak low near KRST, and then into southeast Nebraska. This evening more convection will slowly start developing across the area as forcing ahead of the cold front increases. Some storms may produce locally heavy rainfall due to their slow movement and the high moisture content of the atmosphere. the cold front sweeps through the remainder of the area during the morning.
Latest satellite pic indicate the base of the upper level trough extending southwestward across Manitoba, the northwest corner of ND, and into northern WY. The area of light to moderate rain ahead of the upper trough continued across southwest/south central ND into western SD. Models are indicating that although the main base of the upper level trough should be into the Red River Valley by Saturday morning, a trailing upper level impulse in the northwest flow will move southeast across ND. Lows tonight should range from 45 to 55, with highs Saturday from the mid 60s in the James Valley to the lower 70s west. At upper levels, a northwest flow regime will be in place across the Dakotas, with the base of the upper level trough well to the east into the Great Lakes area.
with trailing weak trough axis draped SW into north Ga (perhaps just north of metro ATL). particularly where the trough axis exists. Upper level flow will flatten somewhat through the period as upper level ridging weakens.
Surface cold front now into Northern larimer and Northern Weld counties and expected to be into the Denver area towards 4 pm local. Thunderstorm activity will decrease from North to South through the evening hours as stronger subsidence moves in behind the trof. Expect drier conditions on Saturday with cooler low levels and more stable airmass.
Currently the satellite water vapor image is showing a trough of low pressure passing over the Northern Rockies with Tropical Storm Kay positioned just south of the Baja Peninsula. Both models show the previously mentioned trough of low pressure exiting the Northern Rockies, pushing into the Great Plains. Dry northwesterly flow fills in over our forecast area behind this departing trough providing seasonally cool temperatures and less thunderstorm coverage through Saturday.
High pressure over the southeastern states will continue to drift southeast. A cold front is poised to push across Central Indiana on Saturday Afternoon and Saturday Night.
Expect a similar pattern to remain in place Saturday, with high pressure persisting from the western Atlantic into the northern Gulf. Lows tonight expected to remain in the low to mid 70's inland and upper 70's to near 80 closer to the coast.
the main precipitation feature will be increasing chances for thunderstorms from west to east across the central IL forecast area starting close to midnight west of the Illinois River and spreading eastward overnight as a cold front approaches from the west. Showers and storms will be departing quickly into Indiana Saturday evening, as the progressive cold front reaches to the Wabash River Valley by 00z/7pm. Drier and much cooler air will invade Illinois as Canadian high pressure builds into the region.
242 PM CDT FRI AUG 19 2016 Overall, a typical summer weather regime will persist into the weekend with a Bermuda ridge extending from the the western Atlantic into the northern Gulf of Mexico.
327 PM EDT FRI AUG 19 2016 High pressure will move east of the area Saturday.
A broad area of low pressure has moved over southern California and an upper ridge nosed over the Pacific Northwest into British Columbia. Moving into the weekend, a dome of high pressure will develop over northern California with a persisting weak trough just offshore from the southern half of the state.