Aikyam-Lab/Synoptic-Bench huggingface dataset:
A cold front draped across southern Middle Tennessee and Northwest Alabama continues to slowly drop ESE out Tennessee early this evening, which will continue to trigger some isolated to scattered thunderstorms through the early evening. The dry conditions will continue through Saturday, as the cold front stall south of the area. The aforementioned cold front will begin to lift northward as a warm front late Saturday night.
505 PM MDT Fri Aug 4 2017 Updated Aviation Discussion A disturbance will move southeast over the region through the weekend, behind the Canadian cold front that brought gusty northerly winds today. This will bring cooler than normal temperatures for the period, as well as a chance of showers and isolated afternoon and evening thunderstorms.
Surface analysis reveals the cold front east of I-65 at this hour. Satellite shows clearing behind the front as drier and cooler air is advecting into the lower Ohio Valley. Canadian high pressure will keep the region cool and dry tomorrow, with afternoon highs topping out in the upper 70s to low 80s, and dewpoints in the low to mid 50s.
1145 PM EDT Fri Aug 4 2017 The region of low clouds within a thermal trough axis will pivot east of the terminals during the first two to three hours of TAF issuance. Large upper level trough with multiple smaller troughs embedded with in it is encompassing almost all of the conus and Canada. Cold front passed through early today with just a few light showers. Wrap around moisture combined with lake effect moisture from 850mb temps sub 10c, 500mb trough axis over Lake Michigan and diurnal heating is producing scattered shower activity over western Michigan. Skies will clear later tonight from the west behind the departing trough.
709 PM CDT Fri Aug 4 2017 Upper low over eastern Wisconsin continues to move slowly east, but its influence extends back into eastern MN with just a few isolated showers into southeast MN, and more coverage from the northeast metro into northeast MN and certainly western WI. High pressure along the MN/SD border will drop to the southeast. Toss in northwest winds diminishing quickly this evening and turning to the south, and temps tonight will mainly be in the lower 50s. This will promote at least slightly cooler than normal temperatures and we will remain in a more favored area for weak embedded short waves affecting the region.
656 PM CDT Fri Aug 4 2017 An upper low to our northeast will continue to track eastward, which will put us into consistent northwesterly flow aloft as we head into this weekend. This evening, thunderstorms are expected to develop across western Nebraska and track towards the area as the low-level jet veers into the area.
High pressure will continue to dominate the weather over the region heading into the weekend. Temperatures will be a little cooler over the weekend thus the heat advisory has been cancelled.
751 PM EDT Fri Aug 4 2017 A cold front has cleared the forecast area this evening with breezy winds moving in behind. High pressure will shift south of the area on Saturday.
304 PM MST Mon Jan 1 2018 Upper trof across SE MT/NW WY will continue to drop southeastward across eastern CO tonight. In spite of this, low temperatures tonight may actually be a tad warmer than last night as increasing mid/high cloudiness along with some winds which pick up after midnight may help hold temperatures up a few degrees. There will also be a brief shot of some snow showers across the central mountains tonight but overall any accumulations will remain spotty and light with amounts generally under 2 inches for the higher peaks north of Cottonwood Pass.
840 PM MST Mon Jan 1 2018 High pressure will prevail across the region through the week as temperatures continue to run above normal with highs mostly in the 70s. Upper level high pressure ridge remained firmly parked over the desert southwest today, with 500mb heights changing very little and remaining near 581dm over southern Arizona. Earlier in the day, high clouds thinned quite a bit moving through the ridge and into the state allowing for generally sunny conditions and several degrees of warming. There continues to be very strong consensus between the global models suites (and their respective emsemble members) that strong long-wave ridging aloft will remain over the region through all of the upcoming workweek as a highly-amplified long-wave pattern remains locked over North America, with very deep trofing entrenched from the Rockies eastward.
West winds will back to the southwest Tuesday afternoon as low pressure passes by to the north of the area Tuesday night. Clouds will increase Tuesday evening in response to the low, but remain VFR through at least the evening. High pressure will slide southwest of the state tonight keeping enough of a pressure gradient for 5 to 10 knot winds. A mid level trough drops through Tuesday night with an upper level jet off to the west.
Ceilings have been rising gradually this afternoon as the cold air deepens across the region and rainfall also has been diminishing in coverage as an upper level disturbance moves well south of the region weakening the coastal trough.
928 PM EST Mon Jan 1 2018 High pressure will gradually build in from the west through tonight with continued bitterly cold temperatures.
/issued 225 PM CST Mon Jan 1 2018/ Broad upper trough over the eastern half of the country with a ridge over the west.
659 PM EST Mon Jan 1 2018 High pressure will gradually build in from the west through tonight with continued bitterly cold temperatures.
In the middle to upper levels(700-200 mb), latest GOES-16R satellite imagery overlaid with available model streamline analysis as of 900 pm continues to depict a massive longwave polar trough encompassing most of the CONUS. Southern Florida and the Florida Keys are now entering beneath the lower right quadrant of the large polar trough, with nearly 100 knot southwesterlies moving overhead at 250 mb. If the cold air advection were not in place in the lower levels, you would see cirrus above it. At the surface and in the lower to middle levels(Surface-700 mb), latest marine and land surface observations and analysis as of 900 pm, detail the center of an icy near 1050 mb over Western Iowa attm. Cold air advection across relatively warmer Gulf waters for this time of year will yield mixing and turbulent boating conditions everywhere.
517 PM CST Mon Jan 1 2018 Quiet forecast over the next several days as the upper trough and surface ridging gradually loosen their icy grip on the forecast area. Slightly warmer temperatures are expected Tuesday as weak southerly flow and gradually increasing temperatures aloft help highs stretch to the upper teens to low 20s, and these cold-but- not-as-awful temperatures will continue through the rest of the work week, then warmer conditions are possible this weekend as the upper pattern shifts to the east and thermal ridging builds in from the west. VFR conditions to dominate through the fcst period with high pressure in firm control of the local weather pattern.
321 PM MST Mon Jan 1 2018 An upper level ridge of high pressure is slowly rebuilding over the Pacific Northwest. As a result warmer temperatures will slowly move back into North Central and Southwest MT over the next few days.
Any lingering precip tonight into Tuesday should remain offshore or perhaps very close to the immediate coast as coastal trough develops.
546 PM CST Mon Jan 1 2018 Arctic high pressure will build south through the region tonight and Tuesday.
Cannot totally rule out some patchy freezing fog or flurries ahead of the short wave with quite a bit of lingering boundary layer moisture. Significant warming trend begins Tuesday, at least relatively speaking for the high plains areas that are so cold today. Upper-level ridging appears to be the dominant feature through mid to late week. Only issue expected tonight on the aviation desk will be potential for some freezing fog around the Platte River Valley to affect Scottsbluff. Warmer and dry conditions return through the upcoming week after today.
Will reduce any threat of flurries to a slight chance, with perhaps a dusting to an inch in the higher mountains. Subsidence will increase behind the trough with the right entrance region of a jet helping to bring down 40-50 kt winds from 700 mb to the surface by Tuesday late afternoon. Lots of ridging in store for Colorado for the first week of the year. ridging and a deep trough over the eastern United States. According to the ECMWF, the next chance of precipitation in the forecast area will be over the weekend, when a trough is forecast to move across the state.
424 PM CST Mon Jan 1 2018 High pressure will continue to slide southeast out of the region tonight. With that said we did utilize guidance on the high side of the envelope of solutions.
Cold with Low Wind Chill Values Across Portions of the Cold front is shifting south of the area with a tight gradient behind this boundary producing breezy to windy north winds across the area. The breezy winds and colder temperatures will produce low wind chill values from the mid to upper 20s across Lake County to the low 30s toward I-4. Also, with wind chills already in the low 30s for portions of Lake and Inland Volusia counties have brought up the start time to this evening. Cloud cover will persist behind the cold front into tomorrow, with ceilings ranging from IFR/MVFR.
631 PM EST Mon Jan 1 2018 Arctic high pressure will build across the region tonight and Tuesday and then move off to the east Tuesday night.
831 PM CST Mon Jan 1 2018 High pressure is centered over Iowa this evening, keeping Middle Tennessee under the effects of a dry Arctic air mass. High pressure is in control and skies will be clear for the taf period.
Subsidence will increase behind the trough with the right entrance region of a jet helping to bring down 40-50 kt winds from 700 mb to the surface by Tuesday late afternoon. Lots of ridging in store for Colorado for the first week of the year. ridging and a deep trough over the eastern United States. According to the ECMWF, the next chance of precipitation in the forecast area will be over the weekend, when a trough is forecast to move across the state.
/issued 253 PM CST Mon Jan 1 2018/ Arctic high pressure continues to settle into the Mid South this afternoon and will be centered just to our north overnight.
Enough winds across the Mountains, Plateau, and area ridges to produce wind chills of 5 below or lower. Chattanooga Airport, TN 10 31 16 37 / 0 0 0 10 Knoxville McGhee Tyson Airport, TN 4 28 12 35 / 0 0 0 10 Oak Ridge, TN 4 29 13 36 / 0 0 0 10 Tri Cities Airport, TN 2 27 8 32 / 0 0 0 10 NC.
636 PM EST Mon Jan 1 2018 A strong and broad area of high pressure will be the story for the short term. This will generally keep winds light, predominately from the NW as the high sits to our NW as well through tonight, switching to a more southerly direction as the high nears in closer Tuesday into Tuesday night. With light winds and the continued airmass in place, plus the low nudging closer to us, there is no reason we should be as warm as many of the models were suggesting.
Will reassess low temperatures in a later update to get a better handle on how quickly they drop, especially for any ridge/valley splits. A strong and broad area of high pressure will be the story for the short term. This will generally keep winds light, predominately from the NW as the high sits to our NW as well through tonight, switching to a more southerly direction as the high nears in closer Tuesday into Tuesday night. With light winds and the continued airmass in place, plus the low nudging closer to us, there is no reason we should be as warm as many of the models were suggesting.
But to the south and southwest, closer to the ridge, winds will be lighter, so temps have a better chance to bottom out hard toward the Illinois border.
Upper ridge has developed a temperature inversion in the valleys with the usual haze and patches of fog/stratus.
Not as unstable as yesterday with a weaker lapse rate in the low and mid levels.
Flight operations should proceed in vfr mode for another 24 hour period with drier air holding on in a subsident high pressure regime.
859 PM EDT Mon Jul 10 2017 A dying cold front will approach from the Great Lakes this evening, then stall out just north of Pennsylvania for the next few days. Much higher humidity, along with cloud cover, will result in a warmer night than recent ones, with min temps mostly between 65-70F. Dewpoints will be pushing 70F in most places Tuesday, likely resulting in heat indices reaching as high as the mid 90s across the Lower Susq Valley.
Humidity at H925 is very dry even at the coast; therefore, the low clouds are likely to be quite shallow and not likely to penetrate the coastal range into the Umpqua Basin in spite of onshore flow tonight.
This should continue through the night, with lows expected to be a couple of degrees warmer than last night's values. /Issued 336 PM CDT Mon Jul 10 2017/ High pressure continued to build eastward across the Southern Plains this afternoon. conditions are not expected to waver much across the region while high pressure remains the dominate feature over the southern half of the CONUS. Hot and humid conditions are forecast for the CWA with highs in the low/mid 90s and heat index values in the upper 90s to around 105 degrees. mainly over the higher terrain locations of Southeast Oklahoma into Northwest Arkansas.
Otherwise, high pressure over the four corners region is weakening in response to an upper trough moving over the Pacific Northwest.
An inland warming trend is then forecast late in the week and into the upcoming weekend as high pressure build back toward the California coast. Temperatures were generally a few degrees cooler than yesterday. The upper trough currently pushing into the Pac NW may even help to deepen the marine layer a tad.
Scattered showers & storms (VCTS) will be possible again tomorrow afternoon around 11/16-17Z or so at most TAF sites, except some northern sites in the Highway 82 corridor. Temperatures in the low 90's will combine with dewpoints in the low 70's to result in heat indices near and slightly above 100 degrees. 2 inches and dewpoints in the lower to mid 70s. These storms will have potential, given the high amount of moisture in the air, to bring efficient, heavy rainfall. Zonal flow will take hold across the northern tier of the CONUS while a building upper ridge will expand across our region. Highs should easily reach into the lower 90s during this time period.
812 PM EDT Mon Jul 10 2017 Upper air pattern consists of a 500 mb trough in the Pacific NW and more troughing across the ern U. There is also a ridge across the Rockies.
, Temperatures are running cooler this evening for most areas down 1 to 5 degrees. The atmosphere will be slightly cooler on Tuesday with slight cooling expected over today's highs.
/issued 330 PM CDT Mon Jul 10 2017/ Mid-afternoon sfc analysis high pressure remaining centered over the ern Gulf and maintaining a moist onshore low-level flow across the region. meanwhile mid/upper-level ridging is noted from the 4-Corners region nwd through the lee of the Rockies and Plains states with some troffing noted moving into the Appalachians. The region looks to remain in a rather persistent pattern the next few days with ridging staying mainly to our west while srly low- level flow keeps us moist and unstable.
1044 PM EDT Mon Jul 10 2017 A strong cold front will approach on Tuesday and sweep across the area Tuesday evening.
906 PM CDT Mon Jul 10 2017 Weak high pressure over the southeastern United States kept skies mostly clear across the Mid-State this evening.
823 PM CDT Mon Jul 10 2017 After reaching the 88 to 93 degree range in many locations with sunny skies earlier today, temperatures have cooled mainly into the lower 80s. The 5h sheared vorticity lobe will remain across central MS-AL-GA thru Tuesday as a weak sfc trof-8h wave tracks northward into the same general area during the afternoon.
/issued 322 PM CDT Mon Jul 10 2017/ High pressure both surface and aloft will remain in place over the Mid South through Tuesday. Temperatures will again climb into the lower to middle 90s with dewpoints remaining mainly in the 60s, which should keep heat indices below 100 degrees.
1137 PM EDT Mon Jul 10 2017 A strong cold front will approach on Tuesday and sweep across the area Tuesday evening.
Winds slacken this evening then look to increase slightly again overnight with the passage of a cold front.
High pressure will rebuild later this week resulting in increasing temperatures.
Small upper level low over parts of Central and South Louisiana will provide support for convection. Part of the reason is that a weak-upper level trough that brought enhanced afternoon convection across the ArkLaTex has shifted south into Acadiana today while upper-level ridge has been strengthening in its place. A similar pattern to persist through the Tuesday characterized by upper-level ridge maintaining sparse afternoon convection north of I-20 with scattered convection south. Afternoon high temperatures to climb into the lower 90s on Tuesday.
806 PM EDT Mon Jul 10 2017 A strong cold front will approach on Tuesday and sweep across the area Tuesday evening.
552 PM MDT Mon Jul 10 2017 00Z TAF CYCLE Isolated to scattered showers and thunderstorms will continue to drift off of the higher terrain of central and western New Mexico, potentially filling into adjacent lower elevation areas and valleys through the evening. Daytime highs will be a few degrees warmer across the east today and tomorrow.
An inland warming trend is then forecast late in the week and into the upcoming weekend as high pressure build back toward the California coast. The lingering coastal clouds and cooler airmass overhead led to a noticeable cool down today after a toasty weekend. Latest 24 hour trends indicates many location currently cooler than yesterday at this time, especially across the interior. The upper trough currently pushing into the Pac NW may even help to deepen the marine layer a tad.
754 PM EDT Mon Jul 10 2017 A dying cold front will approach from the Great Lakes this evening, then stall out just north of Pennsylvania for the next few days. Much high humidity, along with cloud cover, will result in a much warmer night than recent ones, with min temps mostly between 65-70F.
1034 PM EDT Mon Jul 10 2017 The western Atlantic ridge stretches west across the Florida Peninsula. This evening's sounding sampled easterlies from the surface to 750 mb, painting the depth of the higher heights to our north.
/issued 228 PM CDT Mon Jul 10 2017/ Hot and dry conditions across most of the area through the work week due to the elongated upper high over portions of the southern U.
1127 PM EDT Mon Jul 10 2017 A dying cold front will approach from the Great Lakes this evening, then stall out just north of Pennsylvania for the next few days. Much higher humidity, along with cloud cover, will result in a warmer night than recent ones, with min temps mostly between 65-70F. Dewpoints will be pushing 70F in most places Tuesday, likely resulting in heat indices reaching as high as the mid 90s across the Lower Susq Valley.
a degree or two cooler in most cases. /issued 645 PM CDT Mon Jul 10 2017/ High pressure both surface and aloft will remain in place over the Mid South through Tuesday. Temperatures will again climb into the lower to middle 90s with dewpoints remaining mainly in the 60s, which should keep heat indices below 100 degrees.
Another spectacular blue sky was in place, and a clear sky is again anticipated tonight as high pressure ridging stays in place across the central and upper TN valley. Dew points are slightly higher today and weak southerly flow will enable lows to be warmer tonight, mainly in the m-u60s. The 5h sheared vorticity lobe will remain across central MS-AL-GA thru Tuesday as a weak sfc trof-8h wave tracks northward into the same general area during the afternoon.
Upper level trough and associated cold front moving across Southwest Idaho this evening. Incoming Pacific upper trough will cool temperatures to normal through Tuesday night.
Latest 85H analysis has the highest moisture situated where the best convergence resides. the highest probability for early Tuesday convective initiation will focus across the nearshore waters and coastal counties. Earlier sun should push temperature readings into the lower 90s by noon.
/Issued 336 PM CDT Mon Jul 10 2017/ High pressure continued to build eastward across the Southern Plains this afternoon. conditions are not expected to waver much across the region while high pressure remains the dominate feature over the southern half of the CONUS. Hot and humid conditions are forecast for the CWA with highs in the low/mid 90s and heat index values in the upper 90s to around 105 degrees. mainly over the higher terrain locations of Southeast Oklahoma into Northwest Arkansas.
Small upper level low over parts of Central and South Louisiana will provide support for convection.
Muggy lows overnight in the lower 70s look on track and no changes there. Return of south-southwesterly winds have allowed temperatures to rise into the upper 80s at most locations with a few readings over 90 degrees, while dewpoints in the low to mid 70s are predominant.
Weak high pressure over the southeastern United States kept skies mostly clear across the Mid-State this evening.
1055 PM EDT Mon Jul 10 2017 A dying cold front will approach from the Great Lakes this evening, then stall out just north of Pennsylvania for the next few days. Much higher humidity, along with cloud cover, will result in a warmer night than recent ones, with min temps mostly between 65-70F. Dewpoints will be pushing 70F in most places Tuesday, likely resulting in heat indices reaching as high as the mid 90s across the Lower Susq Valley.
653 AM EDT Wed Oct 11 2017 A 3-day stretch of cooler and cloudy weather begins today with periods of rain.
412 AM MDT Wed Oct 11 2017 Sunny skies and warmer temperatures are expected through the day as warming southwesterly flow aloft covers Colorado. WSW flow aloft will remain over the area fm Thu into Fri as an upper level trough resides over the nwrn US. For Fri night into Sat, WSW flow aloft will increase ahead of an upper level trough. On Sat the upper level trough will move across the area in the aftn and evening hours. At the sfc, a cdfnt will move across the area by midday, and as the upper level trough moves across with favorable QG ascent, will see a chc of pcpn mainly fm late aftn into the evening hours. Highs across nern CO will be in the lower to mid 70s.
Low pressure will pull away from the region today bringing a gradual end to the widespread rainfall this morning. Low level warm air advection will keep the low clouds intact over southern WI on Thursday.
Surface lee-side trof will deepen today, with south southwest surface winds gusting to around 30 kt between 16z and 00z Thursday.
621 AM EDT Wed Oct 11 2017 Low pressure over the Ohio valley this morning will move east slowly to be near the mid Atlantic coast Thursday. Eventually, this high will suppress the low and associated rain to the south and push drier air into the region beginning tonight and continuing into Thursday. In the big picture, high pressure centered over eastern New England early in the period will move east with time allowing a SW flow to once again usher in unseasonably warm air by this weekend along with mainly dry conditions.
The front is evident in the wind shift and temperature dropping into the lower 60s based on the Kentucky Mesonet. A weak warm front remains nearby this morning with a few isolated showers in the south this morning. The timing of this front will also keep the afternoon high temperatures more interesting, but for now will lean toward generally warmer high temperatures east of I-75 and south of I-64 this afternoon. This low stratus will also be slow to mix out Thursday, with forecast soundings showing a strong indication of at least broken deck remaining through early afternoon.
High pressure will continue to hold north of the waters, with generally easterly flow persisting.