Aikyam-Lab/Synoptic-Bench huggingface dataset:
1038 AM EDT Sat Aug 6 2016 A cold front will move across the area this afternoon. High pressure returns for the first part of the week. Cold front to the west this morning with scattered showers forming out ahead along a pre-frontal trough. Dew points noted in the low to mid 70s as well and with persistent southerly flow ahead of the front, not anticipating too much of a drop in the lower level moisture. Lows will range from the low 60s in the Highlands to the mid 70s in lower southern MD.
An upper low is situated over Vancouver Island with troughing extending along the OR coast. Better forcing will be present tomorrow as a short wave lifts out of the trough, but atmosphere will have less moisture to work with. As the trough lifts through tomorrow, winds will also increase as an associated cold front pushes through.
750 AM EDT SAT AUG 6 2016 scattered showers will be limited to areas south of I-70 for the next few hours as a cold front moves south. Building high pressure should bring a clearing trend with lowering humidity levels after frontal passage.
latest satellite loops and model data depict an upper level trough with TUTT characteristics over the eastern Caribbean near Hispaniola, gradually migrating west around the edge of the Atlantic ridge.
735 AM EDT SAT AUG 6 2016 A cold front will be east of the area this morning. High pressure will build southeast out of Canada over the weekend.
/issued 515 AM CDT SAT AUG 6 2016/ Low to mid level ridging is expected to remain centered near the Red River/ARKLATEX for the next several days, while the ridge aloft continues to gradually erode.
455 AM PDT Sat Aug 6 2016 A deep and slow moving low pressure system will move into the area over the next few days. This low will bring cooler temperatures and the threat of showers and thunderstorms.
648 AM CDT SAT AUG 6 2016 Quiet weather continues through the short term with a large area of high pressure building from southern Manitoba this morning into central Minnesota by Sunday.
1137 AM EDT Sun Oct 2 2016 Upper level low pressure will maintain shower chances today. High pressure will then build overhead through the middle of the week. Closed low near western Lake Erie will shift east through the day with once again bands of showers rotating north and east across the region. Best height falls will be across the north, with cooler mid level temperatures allowing for higher POPs and possible isolated thunderstorms. Closed low shifts toward New York state overnight but drier air looks to be slow to arrive. High pressure will then quickly fill in for the middle of the week with dry weather dominating and temperatures gradually warming.
At the surface, high pressure is in control across Central Alabama once again this AM. In the upper levels, we have zonal flow across Central Alabama in the base of the upper trough with the main low over the Great Lakes that is expected to move northeastward toward New England, weaken, and become an open wave trough through tonight. However, with the low levels dry, we don't have enough moisture for precipitation but only clouds. Will look for temperatures a few degrees warmer thanks to no cold air intrusion, zonal flow aloft, and a continuing slowly moderating airmass.
756 AM EDT Sun Oct 2 2016 Upper level low pressure will maintain shower chances today. High pressure will build overhead through the middle of the week. Closed low near western Lake Erie will shift east through the day with once again bands of showers rotating north and east across the region. Best height falls will be across the north, with cooler mid level temperatures allowing for higher POPs and possible isolated thunderstorms. Closed low shifts toward New York state overnight but drier air looks to be slow to arrive. High pressure will then quickly fill in for the middle of the week with dry weather dominating and temperatures gradually warming.
1053 AM EDT Sun Oct 2 2016 A large slow moving upper level low will drift slowly northeast through the southern Great Lakes, resulting in a few lingering showers today. High pressure will then build into the region, leading to dry conditions and a warming trend through the middle of the week. Not many changes to the forecast this morning as the upper level low continues to eject northeast. Surface analysis revealed a trough axis stretching from Toledo down to Indianapolis with weak confluence along the axis.
Satellite water vapor imagery shows a well defined upper low spinning just off the Pacific Northwest coast. There is not a lot of moisture with this low and the bulk of it will stay well to our north. The best chance for showers will be in the high Sierra around Yosemite NP due to orographic enhancement. While snowfall may not amount to much, conditions in the high Sierra will be quite chilly with gusty winds as well. Satellite also shows an upstream s/wv trough around 50N/150W with a more impressive moisture field associated with it.
1142 AM EDT Sun Oct 2 2016 An upper low will drift east across the southern peninsula of Ontario today. A ridge of high pressure will build east into Pennsylvania behind this system early in the new week, and will likely remain over the area through the middle, and perhaps end of the work week bringing mainly dry and slightly milder conditions across Central Pennsylvania.
/issued 356 AM CDT SUN OCT 2 2016/ Fall weather continues across the region this morning as temps slowly fall towards the low to mid 60s.
After this feature passes, a sfc trof will develop along the NM/TX border and increase southerly to southeasterly winds at all terminals AFT 02/18Z. The beginning of the work week will see height falls as a closed low moves across the north half of the western CONUS.
Upper low continues to slowly drift off to the northeast today. Chattanooga Airport, TN 80 59 82 59 / 0 0 10 10 Knoxville McGhee Tyson Airport, TN 78 56 80 57 / 0 0 10 10 Oak Ridge, TN 78 57 80 57 / 0 0 10 10 Tri Cities Airport, TN 75 53 78 55 / 0 0 10 10.
902 AM EDT SUN OCT 2 2016 Moisture has increased across the Nature Coast counties and points northward this morning compared to yesterday morning at this time as evident in 12Z Raob data and water vapor imagery as remnant frontal boundary which had been stalled across the central peninsula drifts northward with weak high pressure north of the region remaining in control.
614 AM CDT Sun Oct 2 2016 Stratus will continue to rotate around the southwestern side of a stacked low pressure system over the Great Lakes region, but will begin to pull away to the east and dissipate this afternoon or this evening as the low begins to eject eastward. Have nudged high temperatures down a few degrees to better reflect yesterday's trends under the persistent stratus deck, but have raised highs to the west where skies are already clear and are unlikely to cloud back over as the low departs.
629 AM CDT SUN OCT 2 2016 Upper level ridging over the region will bring another warm and dry day across the CWA with highs in the 70s and mid 80s.
/ISSUED 419 AM CDT Sun Oct 2 2016/ Considerably warmer this morning compared to the last couple of days as low level moisture slowly increases. At 850 mb, a weak high was located over central LA with a NW-SE oriented weak trough along matagorda Bay. At 300 mb, a deep upper level low was now located over NE IN and a broad upper level high had shifted into western Mexico.
A return to more unsettled, showery and cooler weather is forecast by mid to late week. As the upper low center drops down the Oregon coast, the moist southerly flow ahead of will clouds over this region through midday and possibly into the afternoon.
High pressure will build southeast into the region and persist through mid-week. Outside of the low clouds and fog, remainder of the forecast remains on track, as described by prev near term disc below.
Upper level ridging over the region will bring another warm and dry day across the CWA with highs in the 70s and mid 80s.
1254 PM EDT Sun Oct 2 2016 High pressure will build over the eastern United States through Monday. At the surface, high pressure will build from the northwest and then north while a stalled front lingers well offshore and tropical cyclone Matthew moves north from the Caribbean Sea to the Bahamas.
SE Oregon and most of SW Idaho resides within a dry Southwest flow aloft, between a digging trough to our west and the moist/unstable air mass to our east. A closed upper low near the based of the trough is progged to move into Oregon, accompanied by isolated afternoon showers and thunderstorms in far western Harney County. Upper low currently along the Oregon coast will move to the Oregon Cascades late today, then due east across northern Nevada tonight, and then northeast from there Monday. Max temps today will be much like yesterday, but Monday will be 5 to 10 degrees cooler. Light to moderate westerly winds will keep the air mixed Sunday night and low temps will be a little warmer than the current night.
1021 AM CDT SUN OCT 2 2016 Upper-trough that brought clouds to the region earlier today is no exiting the region to the east allowing for upper-level ridging to rebuild.
Weak high pressure ridging exists over the central FL peninsula this morning.
An upper level trough is bringing a period of rain to the region this morning.
Expect gusty southwest winds and higher chances for showers and thundertorms today, ahead of a cold front due on Monday.
Moist, southwest flow aloft ahead of a low pressure trof will continue.
Highs are forecast in the low to mid 80s this afternoon under partly cloudy skies. /ISSUED 419 AM CDT Sun Oct 2 2016/ Considerably warmer this morning compared to the last couple of days as low level moisture slowly increases. At 850 mb, a weak high was located over central LA with a NW-SE oriented weak trough along matagorda Bay. At 300 mb, a deep upper level low was now located over NE IN and a broad upper level high had shifted into western Mexico.
933 AM PDT SUN OCT 2 2016 An upper trough will bring cooling to the region today, with slightly below normal temperatures.
In the middle and upper levels(700-200 mb), latest available IR imagery overlaid as of 900 am, overlaid with model streamline analysis depict a deep middle and upper level trough centered over the Michigan Thumb with an attendant axis extending south to stretching middle and upper cut off low pressure/trough positioned over the Yucatan Channel. For the last 24 hours, the center of an east to west oriented expansive deep and warm core middle and upper level ridge was located just to the southwest of Baja California, with the eastern periphery of the ridge reaching the Central Gulf at about 90 West. Locally, ridging well to the north and the Hurricane to the south will continue to allow for a decent moderate northeast to east gradient across the Keys and surrounding waters for today and this evening.
Temperatures across the area should be warmer than yesterday with highs in the low 80s as warm advection continues in earnest. Upper ridge will build today and tomorrow in advance of next low pressure system moving onto the West Coast.
Left out mention for now, and kept the cloud cover around with an upper trough in place in the wake of the closed low, which is now over the eastern Great Lakes. Upper low has moved northward into the lower Great Lakes region leaving behind a trough that will keep clouds across the area over the next 24 hours.
753 AM EDT SUN OCT 2 2016 Aviation Low pressure that has been bringing rain to Michigan for the past week will will finally move away and showers will come to an end by Monday.
Weak upper level ridging will be over eastern Colorado this morning, producing nearly clear skies. By early afternoon the upper ridge is expected to move over the eastern Colorado border, allowing the flow aloft to become more southwesterly. By Wed the flow aloft will become more wsw as a secondary upper level trough moves into the Great Basin. For Wed night into Thu there are some disagreements between the ECMWF and GFS as to how stg the secondary upper level trough will be as it moves across the area. The GFS solution would bring a good chc of pcpn to the area while the ECMWF would keep the best chc over the higher terrain.
Upper low which has been the weather story here in Middle TN the past couple of days is continuing its slow journey north and east as ridging to the west slowly pushes it out. Subtle disturbance in the broad troughing pattern will swing through during the day today but nothing is really expected in terms of precip. Cloud cover will decrease tomorrow and tomorrow night as ridging influences build into the area.
The main upper low off the Oregon Coast will travel southeast into CA/NV over the next 18 hours.
726 AM EDT SUN OCT 2 2016 Low pressure near detroit will slowly move off to the northeast through monday.
933 AM EDT Sun Oct 2 2016 High pressure will build over the eastern United States through Monday. Most of the high resolution models develop some light precipitation in this area during the 18-21z time frame. At the surface, high pressure will build from the northwest and then north while a stalled front lingers well offshore and tropical cyclone Matthew moves north from the Caribbean Sea to the Bahamas.
east/west oriented trough also extending into srn WI. Medium The Mid/Upper level low will move across the Eastern Great Lakes as a ridge builds into the Upper Mississippi Valley and Western Wisconsin tonight. 700 mb RH begins to dry this afternoon with the 700 mb ridge over Wisconsin late tonight.
759 AM EDT Sun Oct 2 2016 Low pressure will move through the Great Lakes region today and weaken as it moves into the Northeast Sunday night into Monday. Another area of low pressure located south of the area today will strengthen and move off the Delaware and New Jersey coasts tonight.
Cold front arrival should be around 10Z Monday with a 40 percent chance of MFVR conditions setting in by 14-15Z.
Onshore winds and seas will increase by midweek as pressure gradient tightens between high pressure to the north and Hurricane Matthew lifting north through the Bahamas. Marine interests will need to stay tuned to the latest forecasts regarding the magnitude of eventual impacts late in the week from tropical cyclone Matthew.
925 AM EDT SUN OCT 2 2016 Low pressure near detroit will slowly move off to the northeast through monday.
150 PM EDT Thu Oct 13 2016 A cold front will move across the region today accompany by a period of showers.
144 PM EDT Thu Oct 13 2016 850mb temps are currently around -6C with NW to W low level flow as SFC ridging is moving in from the west. Most of the precip is rain, with potential for some snow mixing in as a few showers move over the higher terrain of the west half. With winds turning more westerly and a ridge coming in, expected isolated lake effect rain shower across the Keweenaw into this afternoon and isolated to scattered showers over far northeastern Upper MI into early this evening. As the ridge AK ridge retrogrades to the west and the ne Pacific trough develops toward AK, downstream a ridge will move into the west with a trough into the cntrl CONUS.
157 PM EDT Thu Oct 13 2016 Weak cold front is washing through the area now. and even the winds ahead of the front are veering to a westerly component as lee trough develops in the Carolinas.
Clouds moving into the west this afternoon are the leading edge of clouds associated with a Pacific low pressure trough.
/issued 955 AM CDT THU OCT 13 2016/ A cold front to the northwest has stalled southeast of Dallas this morning and our region remains in the warmer air mass. Dry air is seen over the region as moisture streams over the top of a ridge acrs nrn Mexico. At the sfc, a cold front extends fm cntl AR swwd toward cntl TX. Ahead of the front, winds are nearly calm acrs the area courtesy of weak ridging, and combined with mostly clr skies, are allowing for the development of areas of fog. The front will meander and weaken over N LA through Friday, allowing for a reinforcing ridge of high pres to build south.
344 PM EDT Thu Oct 13 2016 High pressure centered over Illinois will move over the local area tonight and then shift to New England on Friday.
1222 PM CDT Thu Oct 13 2016 Easily the coldest temps of the season so far with cold Canadian high pressure providing optimal conditions for radiational cooling this morning. weak isentropic ascent along a northward retreating warm front may be enough to squeeze out a few shwrs any maybe a few thunderstorms across southern portions of the fcst area.
Otherwise, high pressure will sustain a light wind overnight. Generally a dry and stable profile into Friday with high pressure drifting through. Thought about upgrading the Thumb region to a freeze warning (temperatures reaching into the 28-32 degree range), but with the uncertainty in the clouds and dew pts still remaining somewhat elevated (mid/upper 30s) decided against it and will hold on to temperatures just approaching freezing. Return flow around the departing high will kick in tomorrow, but weaker sun angle and cold start will likely only translate to highs in the lower 60s, based on 925 mb temps around 10 C.
351 PM EDT Thu Oct 13 2016 A ridge of high pressure will continue to dominate the weather pattern even with a very weak cold front moving into N GA Tonight. The ridge is weaken a bit today but a reinforcing ridge will build into the area from the eastern great lake states through Sat. The frontal system just weakens as the ridge just build right over it and keep the main area of moisture north of our area through the short term. Made slight adjustments accordingly and with a late period advance of an amplifying upper trough digging into the southeast CONUS by Thursday.
205 PM CDT Thu Oct 13 2016 Surface map this afternoon had high pressure centered over eastern IA/northwest IL. For tonight, high pressure will drift into the Great Lakes region which will set up southerly winds across our region overnight, especially west of the Mississippi River. The rest of the area should see lows in the lower/middle 30s. A breezy and seasonably mild day is on tap for Friday on the backside of the departing high and in advance of low pressure moving across the Northern Plains. Models indicating a push of southerly low level moisture transport into the area Friday night ahead of the cold front moving from the Dakotas into MN.
240 PM EDT Thu Oct 13 2016 Cold front has pushed to our east with light northerly flow now in place. NAM model soundings show the low level moisture remaining in place mainly south of JKL, so expect a rather cloudy and/or foggy night over southeast Kentucky. Temperatures will hinge on cloud cover so expect a range from the low 40s in the north to the low 50s along the Tennessee border.
The frontal boundary will head back northward on Friday and a drier and warmer weekend will result.
306 PM EDT Thu Oct 13 2016 A cold front crosses today. High pressure passes Friday.
Very quiet weather for the next 24 hours as high pressure slides east across the region. High pressure will slide east Friday as cyclogenesis over the northern Rockies results in a low pressure system tracking across southern Canada Friday night. Broad, strong southerly flow throughout the boundary layer up to the mid levels will bring warmer and more humid air northward to the Upper Midwest this weekend. It may be a bit warmer than currently forecast depending how deep we do mix.
234 PM MDT Thu Oct 13 2016 A weak flat ridge of high pressure will push through the area and allow dry and seasonably warm conditions to prevail through the short term period.
Moisture is slowly on the increase as the upper high over the Gulf builds east and the surface front gradually moves into the northwest Delta. Dewpoints should mix out into the lower 50s in the east while better moisture with PW's are beginning to move into our west.
608 PM EDT Thu Oct 13 2016 High pressure will build across the region tonight providing dry weather and cooler temperatures. Patchy frost will develop by morning across some of the cooler locations. High level clouds increase from the south late, but expect that this late timing and the fact that the clouds will be thin, will enable frost formation in ILN/s cooler ne counties. Highs will be close to normal, ranging from the lower 60s ne to the upper 60s sw.
A cold front will move east of the Chesapeake Bay by this evening.
605 PM EDT Thu Oct 13 2016 High pressure centered over Illinois will move over the local area tonight and then shift to New England on Friday.
349 PM EDT Thu Oct 13 2016 Post frontal clouds will break tonight as high pressure builds back into the region overnight and Friday.
These should persist in all areas for at least the morning hours, but latest HRRR show some breaking up of the lowest clouds by early afternoon, especially across the southern locations. /issued 412 AM CDT THU OCT 13 2016/ (Today and Tonight) Cold front has sagged just south of the area early this morning, with all observations showing a light north wind.
1158 AM MDT THU OCT 13 2016 18Z TAF CYCLE An upper level trough crossing today will work with low level moisture across southeast areas to continue to produce a few showers and possibly a thunderstorm. Some of this moisture may spill over the Caprock into TCC toward sunrise with some low clouds, but downslope flow will probably prevent the low clouds from forming a broken ceiling at Tucumcari. Temperatures will be below normal across the eastern plains of New Mexico today thanks to the cold front that pushed through yesterday.
The rain will taper off late evening and overnight after a cold frontal passage.
For 00z Aviation discussion below Surface analysis this afternoon puts the center of sprawling high pressure over western IA with a potent storm system moving onshore the Pacific Northwest. Aloft, a longwave trough axis is nearly N-S from Lake Superior through the lower Mississippi River Valley and a small ridge axis is aligned over the spine of the Rockies, putting MN/WI within dry NW flow aloft. allowing for warmer temperatures and slightly higher dewpoints to move into the region through tomorrow afternoon. However, plenty of sunshine will still be realized despite the exodus of high pressure due to a broad longwave ridge moving atop the region tomorrow. Minimum temperatures tonight will also be warmer, thus no need for any further freeze-related headlines or supplementary products.
550 PM EDT Thu Oct 13 2016 A cold front will move east of the Chesapeake Bay by this evening.
209 PM EDT Thu Oct 13 2016 High pressure will build into the region this afternoon providing dry weather and cooler temperatures. Temperatures will reach the upper 50s in the north and rising to the lower to mid 60s in the extreme se.
A mid/upper level high pressure system is ctrd east of S TX and across the NW Gulf today. The high pressure continues to influence the weather across S TX by suppressing deep convection. A long wave trough oriented from the SW U. By this evening the higher PWATs ill shift farther west bringing a slight chc of convection to the Rio Grande Plains. As the upper trough approaches S TX, the upper jet begins to help provide upper support and combine with an unstable airmass to produce isol/sct SHRA's/TSRA's across the eastern CWA.
Some of the lower slopes of the mountains and the plains will see near critical conditions for a few hours Friday.
431 PM EDT Thu Oct 13 2016 High pressure will build across the region tonight providing dry weather and cooler temperatures. Patchy frost will develop by morning across some of the cooler locations. High level clouds increase from the south late, but expect that this late timing and the fact that the clouds will be thin, will enable frost formation in ILN/s cooler ne counties. Highs will be close to normal, ranging from the lower 60s ne to the upper 60s sw.