Aikyam-Lab/Synoptic-Bench huggingface dataset:
153 AM EDT Sat Oct 8 2016 Rain will begin over the western highlands this evening as a a cold front moves in from the west tonight.
A weak area of low pressure slowly lifting up through Arizona will bring a chance of showers and possibly a few thunderstorms over Mohave County this weekend.
Only minor changes for some thin high cloudiness arriving earlier this morning, a bit more wind over the mountain ridges, and colder temps in the mountain valleys both this morning and again tonight. A mostly dry southwesterly flow aloft will be over the area on Sunday with a weak upper trough near the Four Corners region at 12z Sunday moves eastward across srn CO.
Radar is filling in west of the Cascades as a warm front lifts over the Pac NW. /SVH 06Z TAFS: A warm frontal boundary will strengthen overnight.
354 AM CDT Sat Oct 8 2016 Upper level flow will be zonal for today and become more southwest tonight as a trough develops to the west. 850 mb temperatures will be noticeably warmer and allow highs to reach the 70s today.
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.
228 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.
521 AM EDT Sat Oct 8 2016 A cold front will cross east through the Ohio Valley today and through the Mid Atlantic region tonight as Hurricane Matthew moves northeast along the Carolina coast.
A cold front will approach the area from the west, but the dry airmass ahead of it will preclude any showers.
247 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.
327 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.
248 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.
253 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.
340 AM MDT Sat Oct 8 2016 Upper level analysis has ridging over the western CONUS with trof across the Great Lakes area. At the surface, high pressure resides across south central Canada with a weak lee trof across central Montana into eastern Wyoming. Upper ridge will build over the central CONUS as weak frontal boundary/lee trof shifts slightly northeastward across western SD, allowing warmer air to move into the area. Southerly winds will increase ahead of an approaching trough Saturday night, keeping lows mainly in the 40s.
506 AM EDT Sat Oct 8 2016 Rain this morning exiting east will be followed by dry and cooler conditions. Steady rain will continue east this morning as deep moisture is lifted ahead of a cold front transitioning over the region. Latest surface analysis shows the front currently crossing over eastern Ohio and is expected to be east of the ridges by this afternoon. High pressure will provide much drier and cooler air the remainder of the weekend under northwest flow aloft. As the upper- level trough axis shifts through Sunday, the core of the colder temperatures aloft will come with it.
525 AM EDT Sat Oct 8 2016 A cold front will move through the area today.
Some patchy frost is still expected across NW OK where dewpoints may try to drop a few more degrees under the aforementioned ridge so will keep the frost advisory in place.
539 AM EDT Sat Oct 8 2016 Rain this morning exiting east will be followed by dry and cooler conditions. Steady rain will continue east this morning as deep moisture is lifted ahead of a cold front transitioning over the region. Latest surface analysis shows the front currently crossing over eastern Ohio and is expected to be east of the ridges by this afternoon. High pressure will provide much drier and cooler air the remainder of the weekend under northwest flow aloft. As the upper- level trough axis shifts through Sunday, the core of the colder temperatures aloft will come with it.
Dry weather, light winds, and a warm weekend ahead! High pressure over the West Coast will make the next few days great for enjoying outdoor activities.
324 AM CDT Sat Oct 8 2016 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.
1203 AM CDT Sat Oct 8 2016 As a cool and dry high pressure area pushes into and through the region tonight, unseasonably cool overnight temperatures can be expected. With light/calm winds and clear skies, temperatures will likely fall into the lower 40s for much of the area. Quiet weather will continue through Sunday as that high pressure slowly moves east of the area. This will switch winds to the south and there should be a warm up into the low to mid 70s as a result.
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.
304 AM PDT Sat Oct 8 2016 A warming trend will occur this weekend as a ridge builds into the area.
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.
152 AM EDT Sat Oct 8 2016 Much cooler and drier air will move into the area tonight behind a cold front. Sunny skies are expected for later today and Sunday as high pressure builds into the area. Highs today will be in the upper 50s to lower 60s and a couple degrees warmer on Sunday. Cold front trailing swwd from parent sw disturbance over wrn Ontario of little consequence going forward. guidance temps continue to appear underdone in light of vigorous newd building low level thermal ridge through mid week underneath developing high zonal flow aloft. Thus general preference again lies toward biasing with warmer max temps throughout. VFR conditions assured as strong high pressure over the plains builds eastward into the Upper Great Lakes through the forecast period.
318 AM MDT Sat Oct 8 2016 Water vapor loop showed a split flow aloft with fast westerlies along the northern tier CONUS and subtropical moisture spreading into the southwest CONUS ahead of a upper trough. Temperatures ranged from the low-mid 30s with patchy frost along the North Platte River valley of western Nebraska to the 40s elsewhere. Low amplitude upper ridge will maintain near zonal flow with mostly clear skies through the weekend.
Upper ridge today will weaken tonight through Sunday as an upper trough and associated cold front move into the Pacific Northwest. Zonal flow will continue across the Pacific Northwest, with moisture staying north of our area through Sunday night before a cold front moves through the region.
437 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.
By Saturday morning a cold front will move through the area. High pressure builds back in on Sunday and a much drier airmass will be in place for the rest of the weekend and into the first of the new work week.
326 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.
1227 AM CDT Sat Oct 8 2016 Added a chance of freezing rain across west central North Dakota where Beach reported light rain with 32 degrees at Midnight CDT. The metro model shows road surface temperatures remain above freezing along I-94 which suggests the freezing rain will not be that impactful. A warm front will shift through Saturday night, with the greatest forcing north of the border. Warmer temperatures are expected Sunday with highs mostly in the 60s, to lower 70s southwest.
Matthew will continue moving away from the region today as a cold front moves in from the west and clouds decrease from west to east. VFR conditions are expected to prevail through the period as there is a lot of dry air ahead of the cold front. A cold front will approach the area from the west, but the dry airmass ahead of it will preclude any showers.
353 AM EDT SAT OCT 8 2016 A more autumnal air mass is strongly inbound during the early morning on the heels of yesterday's cold front. The resulting nearly full sunshine might help with a degree or two of temperature boost over guidance, or at least make it feel a little warmer against a well mixed wind gusting to around 25 mph by late morning. Upstream observations early this morning show temperatures making it easily into the mid and upper 30s over the Midwest, even before diurnal mins, which supports the low end of temperature guidance for SE Michigan tonight.
Cold front has passed through the CWA at this hour, with little more than a few clouds to note. The much drier and cooler airmass will really be noticeably by evening as temperatures quickly drop toward overnight lows mostly in the mid 40s. Typical cool spots may see low 40s, with the typical warmer spots likely in the upper 40s.
There is also a possibility to see several hours of near or slightly below freezing temperatures in west central Minnesota where current dew points are in the 20s. Main concerns in the longer term are frost/freeze threats and chance of showers/timing of cold fronts.
JEE 210 PM CDT Surface cold front has cleared the eastern counties of the cwa this afternoon, with much cooler and drier air spreading into the region from the west. High pressure over the Plains will spread east into the Midwest by early Saturday, resulting in clearing skies, diminishing winds and seasonably chilly overnight temps. Ratzer 218 PM CDT No real big weather concerns through the weekend as high pressure continues to build across the region, centering overhead by Saturday and Saturday night. Still expecting another cool night Saturday night with lows in the 40s, but not quite as cool as tonight given a slightly warmer airmass moving in.
349 AM EDT Sat Oct 8 2016 A cold front will move through the area today.
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.
As Hurricane Matthew continues away from the area high pressure is building over the southeastern states as an upper level high builds over the western gulf region.
622 AM EDT Sat Oct 8 2016 High pressure will push slowly east across the region through the first part of the upcoming week. The cold front has pushed through all but our far southeastern areas early this morning. Expect highs today ranging from the low 60s northwest to mid 60s in the south and east.
Temperatures were in the 60s to around 70 across the lower elevations with 50s in the San Luis Valley (SLV). Min temps will be warmer than last nights. Flat ridging will build over the area aloft, and moisture will increase a bit over the region, especially over southern sections. An isolated showers will be possible by late in the afternoon along the higher elevations along the Colorado and New Mexico border.
459 AM EDT Sat Oct 8 2016 A cold front will approach from the west today then cross the area tonight.
543 AM EDT SAT OCT 8 2016 VFR conditions expected through the taf period as high pressure and dry air combine to produce nearly clear skies, with only a few diurnal cu this afternoon. A more autumnal air mass is strongly inbound during the early morning on the heels of yesterday's cold front. The resulting nearly full sunshine might help with a degree or two of temperature boost over guidance, or at least make it feel a little warmer against a well mixed wind gusting to around 25 mph by late morning. Upstream observations early this morning show temperatures making it easily into the mid and upper 30s over the Midwest, even before diurnal mins, which supports the low end of temperature guidance for SE Michigan tonight.
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.
combining with a weak upper-trough (cold front) passing through. This should help to pull down some cooler air. High pressure will build over the Southern Appalachians for the second half of the weekend, and continue dominate the weather pattern through midweek.
549 AM CDT Sat Oct 8 2016 Upper level flow will be zonal for today and become more southwest tonight as a trough develops to the west. 850 mb temperatures will be noticeably warmer and allow highs to reach the 70s today.
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.
At H5 closed low over the northeast Pacific well offshore of the Pacific Northwest. Closed low over Long Island. Warm front and trough axis has moved east of the forecast area this afternoon.
However, high pressure aloft will likely suppress most attempts of any convection to get very far.
326 PM EDT Sun Mar 19 2017 As low pressure moves further offshore. high pressure will move east across the area tonight.
An upper ridge over the Pacific Northwest exists upstream of a zonal flow pattern residing over Montana. Latest 12z models show a fairly static pattern in place for tomorrow with the ridge translating ever so slightly further east. As a result, Monday may in fact be a mirror image of Sunday, if not a few degrees cooler with slightly lower 850mb temperatures.
302 PM CDT Sun Mar 19 2017 Hot temperatures will persist into Monday as an upper level ridge with anomalously high heights will remain overhead. Thicknesses are progged to increase the next 24 hours and with a warm overnight period expected, highs tomorrow should push 2-4 degrees warmer than those of today in line with MOS values. Winds should be less than 15 mph through the day with the possible exception of the southern Rolling Plains, the part of the area farthest from the trough, but there winds should be mainly from the south to southwest.
Lows tonight continue to climb as well, with readings in the low to mid 60s.
A weak cold front is expected to move across the region later tonight. It will be warmer on Monday behind the front due to decreasing cloud cover and a warmer start to the day.
The old cold frontal boundary ended up reaching as far south and west as an LIX to MCB to MLU line, but it has begun its steady trek back northward as a warm front today. The warm front will lift through the ArkLaMiss overnight tonight, likely resulting in patchy fog across southern and western portions of the area. Have therefore included a Limited threat area for fog in our graphical and text Hazardous Weather Outlook products for location's along and south of the Highway 84 corridor and northwards along the Mississippi River.
Highs tomorrow will be about 20 degrees cooler than today. but still well above the low 50s normal for the first day of Spring.
Upper air analysis this morning showed a large amplitude ridge covering most of the country. At the surface, high pressure was centered over the Gulf and winds across our CWA were from the south through southwest.
218 PM MDT Sun Mar 19 2017 20z surface analysis had cold front from eastern ND to the Black Hills into northwest WY. Cold front will stall just south of the CWA.
357 PM EDT Sun Mar 19 2017 High pressure tonight. Warm front late Monday followed by a cold front Monday night.
343 PM EDT Sun Mar 19 2017 High pressure along with cooler and drier air will remain over the region through Monday night.
The highest coverage may be in the east half of the area overnight, but the chance exists in all locations that elevated storms will fire. Lows tonight should fall to the lower 40s north to the upper 40s south. Highs are continued to be forecast by guidance in the lower to mid 60s.
/issued 947 AM EDT Sun Mar 19 2017/ Satellite imagery and surface/marine observations show that the leading edge of the cold front is right on schedule, moving through Tampa Bay at this time. Ceilings of around 2kft will be common for a couple of hours as the cold front passes. Otherwise, high pressure settles back into the waters by Monday with a return to light winds and slight seas.
Mid level ridging dominates here for much of the night though the sfc/850 trough axis will swing through later tonight. A mild night with a sustained southerly wind ahead of the trough. Medium Looks like there may be a little better phasing of the arrival of mid level vort max with the lower level forcing across SE WI.
234 PM EDT Sun Mar 19 2017 High pressure tonight. Warm front late Monday followed by a cold front Monday night.
The strong cold front which passed through the Northern Rockies overnight stalled when it reached SW Montana and has remained there all day. Over the past few hours it has lost much of it's distinct cold frontal properties and is now a stationary front or general area of surface convergence. Over the next 24 hours warm air advection under strengthening southerly flow will transition the stationary front into a warm front.
159 PM CDT Sun Mar 19 2017 Surface map at 18Z shows ridge of high pressure situated just to our west, with return flow poised for the overnight period and significantly warmer temperatures beginning tomorrow.
528 PM EDT Sun Mar 19 2017 A cold front will bring the next chance of rain later on Monday.
339 PM EDT Sun Mar 19 2017 Low pressure will track well south of the region overnight. High pressure will build across the region Monday.
248 PM EDT Sun Mar 19 2017 High pressure building eastward from the Great Lakes into the North Country this afternoon will remain the dominant weather feature across the area through Monday.
249 PM EDT Sun Mar 19 2017 Upper air pattern consists of a closed 500 mb low over Pennsylvania this morning and a ridge across the plains which moves into the upper Great Lakes today. The freezing drizzle and light snow over the upslope areas of Marquette County will end this morning as drier air slowly moves in.
Light showers or sprinkles will continue to track south southeast across parts of SEMO this afternoon as a warm front associated with a system over the plains approaches from the west, however rising H5 heights/weak ridging aloft will tend to snuff them out by late afternoon. As the warm front draws nearer, late tonight shower and thunderstorm development should be limited to the northern and/or northeast sections of our CWA due to the rising heights/ridging elsewhere.
310 PM CDT Sun Mar 19 2017 A weak cold front has become nearly stationary across the P/CWA today, bisecting the forecast area in a NNW to SSE orientation. Considerably drier air has filtered into the eastern sections of the area behind this front with dew points in the 40s compared with dew points in the low to mid 60s across western zones.
145 PM EDT Sun Mar 19 2017 Low pressure moves off the east coast today. High pressure crosses tonight. A cold front crosses Monday night.
236 PM EDT Sun Mar 19 2017 Northwesterly flow aloft will prevail through Monday on the backside of the upper trough. Sunny skies will continue, with highs climbing into the low to mid 70s across the interior, and the mid/upper 60s at the beaches due to a light onshore flow.
However if the temperatures are a few degrees warmer then there could be a few showers that develop in the western areas.
Readings have pushed into the the lower 70s over parts of central SD, with mid 60s as far east as Aberdeen. Monday will be much cooler behind the passing cold front.
Better dynamic forcing will be delayed until this evening, along with enhanced isentropic ascent, thus cannot discount isolated-widely scattered tsra development along warm front, that will be located across extreme eastern part of the CWA. Low level cold advection will keep temperatures 15 to 20 degrees cooler than those seen today, especially if narrow band of stratus develops along H8 front as depicted by short term models. Short range models have a slightly warmer temperature profile, and most locations should experience mainly liquid precipitation. Due to warmer temperature profiles, lowered snow ratios slightly and thus accumulating snow totals.
S/SW winds in TX and L/V elsewhere as high pressure exits E.
239 PM CDT Sun Mar 19 2017 High pressure will continue over SE Texas through mid week. This is reflected in the high resolution models showing lower chances for fog formation than 24 hours ago. The main impacts of the high pressure ridging will be dry and warm conditions.