Aikyam-Lab/Synoptic-Bench huggingface dataset:
617 AM CDT Thu Apr 6 2017 Upper level low pressure continue to exit to the northeast but winds will still remain a little on the gusty side during the majority of the day. The upper level low responsible for the unsettled and breezy conditions of late is clearly visible on moisture channel imagery this morning and rapidly moving off into the lower lakes. The high will dominate through the remainder of the period with temperatures running a little bit below normal before a warming trend commences after the conclusion of the short term.
the cyclonic curvature aloft at H700 lessens and the ridge to our west moves east this evening we will clear out quickly. Central sections will reach the lower to mid 50s. The ridge axis is anticipated to cut across the area from southwest to northeast by 12z Friday morning. This will result in lows reaching the upper 20s to lower 30s over the east and in the lower 30s west/south. Urban locations such as DSM will hold in the lower to mid 30s. it will be difficult to reach freezing temperatures for long but a few locations may experience a light frost tonight in parts of Iowa.
Turning much cooler and drier tonight into this weekend. This activity is preceding a strong cold front that was pushing through the north central peninsula as of mid morning. Today/Tonight (previous) Cold front sweeps through the area immediately behind the squall line passage, clearing conditions out, and signaling the onset of a much cooler/drier air mass taking hold across the region. (previous discussion) A brisk W/NW flow will dvlp behind a cold front today that will push a dry/stable airmass into central FL.
The low pressure system which brought yesterday's cold front will continue to deepen as it lifts toward New England. With high pressure building in behind the departing low, a tight pressure/height gradient will remain in place across our region. Cooler temperatures expected today and tonight in the wake of the cold front.
1017 AM EDT Thu Apr 6 2017 Aviation section updated Strong low pressure through the mid/upper levels will be moving off to the northeast today. Strong low pressure over Lake Erie will continue northeast. A very tight pressure gradient exists on the west side of the low and strong winds will be the rule. High pressure will be centered over the lower Mississippi Valley on Friday with light northwest winds resulting in temperatures in the upper 40s northeast to mid 50s southwest. This high pressure will again keep skies clear Friday night to a point where scattered frost will be possible throughout central Indiana.
735 AM EDT Thu Apr 6 2017 The last line of thunderstorms had exited the forecast area this morning as a strong trough deepened into the southeast. As the closed upper low pushes into the Great Lakes today. Cooler air should gradually push into north and central GA today as winds gradually become more northwest. A cold night is in store for tonight with the possibility of freezing temperatures for the northeast.
Strong low pressure through the mid/upper levels will be moving off to the northeast today. Strong low pressure over Lake Erie will continue northeast. A very tight pressure gradient exists on the west side of the low and strong winds will be the rule. High pressure will be centered over the lower Mississippi Valley on Friday with light northwest winds resulting in temperatures in the upper 40s northeast to mid 50s southwest. This high pressure will again keep skies clear Friday night to a point where scattered frost will be possible throughout central Indiana.
Early Thursday morning, the forecast area was still under a modest pressure gradient between the strong low pressure departing well east and incoming high pressure over central Nebraska. with the highest temps in north central KS where southerly return flow may start back up and some high cloud cover could build in after midnight.
Warmer weather is expected tomorrow and even warmer this weekend.
The 12Z OHX sounding shows a freezing level around 2400 ft, which is about the level where the forecast has accumulating snowfall. The only change needed to the forecast will be to hourly temperatures, which are running 3-7 degrees cooler than forecast.
Latest water vapor imagery shows a highly amplified ridge axis extending from the desert southwest north through Saskatchewan. At the surface, high pressure was located between Rolla and Devils Lake early this morning. Aforementioned high pressure across north central ND will slide into southeast ND this afternoon. Highs today will range from the lower 50s Turtle Mountains and James River Valley, to the lower 60s west.
753 AM CDT Thu Apr 6 2017 For the ArkLaTex, VFR with high pressure over TX. With a cool dry airmass filtering in areawide, temperatures this afternoon to only climb into the lower 70s. Upper-ridge aloft to strengthen through the early part of the weekend allowing for mostly clear skies areawide.
In its wake, high level clouds lingered on over the area under the large upper level trough. At the surface, brisk northwest winds continued to diminish while temperatures were holding mainly in the lower 40s. Main challenges are centered on temperatures as the strong upper trough progresses eastward, replacing the low level cyclonic flow with an incoming ridge late tonight. As the upper trough continues eastward, current timing of this cloud edge has it advancing into eastern IA by mid morning. The position of the ridge axis, shown just west of the forecast area at 12z suggests northwest winds should stay just high enough to save temperatures from dropping much colder.
926 AM CDT Thu Apr 6 2017 High pressure was ridging over SE Texas this morning.
Winds were generally from the north, with temperatures ranging from the lower 20s in the far north, to the lower to middle 30s south. The forecast for the period today through Friday will be dominated by a large area of high pressure. The weather should be dry, thanks to the high pressure. The big story over the next few days will be the low humidity across the region.
Otherwise, with broad upper level troughing moving across the mid state today in association with upper level low moving eastward across the southern Great Lakes Region, numerous light shwrs will be possible this morning across almost the entire mid state. Under generally cloudy skies, highs today will be in some instances around 25 degrees cooler than highs experienced on Wed, thus seasonably cool temps are expected today, as highs will range from upper 40s Cumberland Plateau Region to approaching 60 southwest portions of mid state. As broad upper level troughing begins to move east of the mid state region as the nighttime hrs progress tonight, some iso light shwrs may linger across the higher elevations of the Upper Cumberland. Afternoon high temps will average 30, and in some cases approaching 40 degree, warmer than lows experienced that morning.
It will be cooler Friday as the marine layer deepens in advance of a low pressure trough moving into California.
High pressure over the region will result in high temperatures in the 90s today and Friday.
Based on a 2 foot, 14 second onshore swell observed at 42012 at 04Z which gradually decreases along with a moderate tidal cycle, have opted to extend the High Risk of Rip Currents until 00Z this evening, after which expect a Moderate Risk of Rip Currents. Highs today range from around 70 inland to the lower 70s closer to the coast. Lows tonight will be in the lower 40s except for mid 40s at the coast.
/issued 1038 AM CDT Thu Apr 6 2017/ High pressure and nw flow aloft in full control of our weather.
852 AM EDT Thu Apr 6 2017 Cold front will clear forecast area to the Southeast this morning. Region will be between a low well to the North, and high pressure building from the West, resulting in a fairly strong pressure gradient.
1038 AM CDT Thu Apr 6 2017 High pressure and nw flow aloft in full control of our weather. /issued 753 AM CDT Thu Apr 6 2017/ For the ArkLaTex, VFR with high pressure over TX. With a cool dry airmass filtering in areawide, temperatures this afternoon to only climb into the lower 70s. Upper-ridge aloft to strengthen through the early part of the weekend allowing for mostly clear skies areawide.
715 AM EDT Thu Apr 6 2017 Trough is swinging through towards the Great Lakes Region and light wrap around precipitation will likely be in the area through most of the day.
Increasing southerly winds through southeast South Dakota, especially west of the James River valley by late night, will either keep temps mild in the lower 40s, or result in temperatures rising through the mid to upper 30s late.
615 AM CDT Thu Apr 6 2017 A long-awaited warmer and drier spell is upon us. Subjective 00Z upper-air analysis indicates broad upper-level troughing from the western Great Lakes/upper MS River valley toward the lower MS River valley, with ridging across the Great Basin and rising 500mb heights across the Rockies to the High Plains. An 850mb low was centered over IN/IL, with sub-0C temperatures dipping south through IA/MO behind the low.
A very quiet stretch of weather commences today and continues on Friday with surface and upper-level ridging firmly in control over the region.
An upper level trough will bring areas of rain to Western Washington this morning as it heads northeast toward British Columbia. Rain will taper off by early afternoon behind the trough.
922 AM MST Thu Apr 6 2017 High pressure over the region will result in high temperatures in the 90s today and Friday.
Further northeast, where clouds will be more persistent along with some scattered showers, highs look to only climb into the lower to mid 50s primarily. Strong ridge of high pressure building swd across the Plains states will begin to translate sewd into the region starting Tonight, thereby allowing sfc winds to gradually diminish. With the departing upper low/trough axis over the SE, a ridge pattern building across the mid/srn Plains will also turn ewd going into Fri.
Temperatures will continue to fall early this morning as a reinforcing cold front moves through. In addition to the clouds, rain, and cooler temperatures, it is expected to become windy today with a strong pressure gradient. Friday looks to be dry as the upper level trough shifts eastward and high pressure begins to build in from the west. Temperatures will remain on the cooler side with highs in the lower to mid 50s.
Lows Friday morning will be a bit warmer than this morning as the wind backs a bit more to the southeast and remains around 10 to 15 mph through the night. Weak low-level moisture return will also take place which will also help to keep overnight lows a bit warmer compared to today.
Water vapor loop indicated an upper level trough over west central MN and was moving south. Upper level ridge from northern SASK to WY will shift over the Red River Valley late Fri. Ridge axis slowly shifts east to the Great Lake states by 12Z Sun. Short wave trough off the northern CA coast will roll over the Northern Plains Ridge on Fri Night. Short wave will bring a warm front into the valley. No precip is forecast with the warm front. Next trough over the eastern Pacific will move into southern Canada late Sat and send a cold front south out of Canada along with mostly light precip. Precipitable water rises Fri as an upper level trough moves across southern Canada. Then decreases north half Sat night as cold front moves into the area.
VFR is still anticipated through the next 24 hours, with surface winds veering as high pressure shifts from central Texas to a little more east of the area.
Otherwise, a dry and mild day with high temperatures in the 60s to low 70s can be expected for many of the lower elevations. Weather will be quiet and warmer the next two days, with highs to around 70F today and in the 70s/around 80F Friday. This will set the stage for a cooler weekend. Surface pressure falls ahead of the trough to the west will create increasing winds Friday, mainly over the western zones. Pressure rises behind the cold front Friday evening bear watching as current progs have shifted the main rises (8-9 mb/6 hrs) further south than last nights progs.
1025 AM EDT Thu Apr 6 2017 The risk exists for severe weather this morning ahead of a strong cold front. Much cooler and drier weather will develop tonight and continue through the weekend.
The rain is associated with an upper level low currently over central Indiana. As the upper low moves east today, the rain will move out of the region by this afternoon. Temperatures will be on the cool side today with highs in the low to mid 60s. By tonight, high pressure will move out of the central plains and into the Ozarks. Temperatures will remain below normal with highs in the low to mid 60s.
WV imagery indicates a weak upper level ridge of high pressure moving eastward across the Great Basin and the Four Corners Region. Near the surface, a broad area of high pressure is shifting slowly eastward across the Northern and Central Plains. High pressure will move off to the east today. A light SE wind is expected by the afternoon as the high moves away. Forecast highs for today will peak out in the lower to mid 60s with the warmest values along the OK border. Lows heading into Friday morning will be a few degrees warmer with the SE winds - upper 30s.
High pressure for the weekend. Tweaked PoPs with greater detail and added some thunder in north-central mountains with exiting cold front based on latest lightning observations. Convective threat is largely gone at this point as a strong cold front drives showers eastward through the mountains. Strong upper low is still deepening over the southern Great Lakes, with descending air aided by convective showers with the momentum transport. Models have the broad and cold low pressure system, with wraparound moisture and wintry precip, lifting out of the area faster on Friday as compared to previous model runs. In the low lands, morning light snow will end as light rain from west to east during the day Friday. However, the higher elevations of the northern and central mountains will continue to receive accumulating snow, especially Friday morning, before diminishing during the afternoon.
Surface winds will trend northwest and much lighter than yesterday between strong low pressure advancing away from the area and through the northeast CONUS, and high pressure ridging through the plains.
High pressure will move off to the east today. A light SE wind is expected by the afternoon as the high moves away. Forecast highs for today will peak out in the lower to mid 60s with the warmest values along the OK border. Lows heading into Friday morning will be a few degrees warmer with the SE winds - upper 30s.
Surface analysis late this morning places an area of low pressure over eastern Lake Erie with the upper level low located over Lower Michigan. A tight pressure gradient associated with this low is bringing gusty winds to portions of the Middle/Lower Mississippi and Ohio/Tennessee Valleys. The rain is associated with an upper level low currently over central Indiana. As the upper low moves east today, the rain will move out of the region by this afternoon. Temperatures will be on the cool side today with highs in the low to mid 60s. By tonight, high pressure will move out of the central plains and into the Ozarks. Temperatures will remain below normal with highs in the low to mid 60s.
718 AM EDT Thu Apr 6 2017 It will be windy and dry behind a strong cold front today through Friday. The cold pressure ridge behind the front will be near the forecast area Friday night and patchy frost is forecast. Today will be windy behind the strong cold front. The pressure gradient is forecast to remain tight tonight with strong low pressure north of the area, but there should be somewhat diminished wind because of nocturnal cooling and less mixing. The pressure gradient between low pressure in the Northeast States and ridging in the Lower Mississippi Valley will bring breezy conditions Friday. Diminished wind will occur Friday night as the ridge gets closer to the forecast area.
953 PM EDT SUN JUN 19 2016 High pressure ridge will bring mostly sunny skies and very warm temperatures Monday.
Dry and stable conditions, along with lighter winds, to start the week as high pressure builds across the area.
840 PM EDT SUN JUN 19 2016 High pressure will remain over the area through Monday.
A strong upper level ridge building over the area should shut off the potential for any shower activity tomorrow. Meanwhile an upper level ridge north of the region extending eastward from the center of high pressure over the four corners area will very slowly drift southward through late Monday afternoon.
Upper level ridging influences will provide for mostly clear to partly cloudy skies through Monday night. Surface riding pattern will be defined by high pressure influences across the central and southern Appalachian mountains.
737 PM EDT SUN JUN 19 2016 High pressure situated southeast of the area will allow for dry conditions across the region tonight. A cold front will approach the area on Monday and move through Monday night.
Chattanooga Airport, TN 63 90 67 91 / 0 0 10 30 Knoxville McGhee Tyson Airport, TN 62 88 65 86 / 0 10 10 40 Oak Ridge, TN 63 89 65 86 / 0 10 10 40 Tri Cities Airport, TN 54 86 63 84 / 0 10 10 40.
18z surface data has high pressure over the Tennessee Valley with a cold front across the Dakotas. After midnight the next cold front approaches the area. On Monday, the cold front moves through the area.
Strong upper level ridge is situated over the desert SW/Rockies and nosing into our northern areas, helping to build heights. This should keep the E cooler while warmer in the W. /issued 420 PM CDT SUN JUN 19 2016/ Very moist cyclonic low level flow near the Central Gulf Coast is supporting scattered shower/thunderstorm activity along the Highway 98 corridor in south central Mississippi extending into northeastern Louisiana. Going through the next couple of days, there will be a gradual decrease in diurnal thunderstorm coverage as the mid level ridge intensifies and increases subsidence and stability over the ArkLaMiss.
756 PM EDT SUN JUN 19 2016 As the upper level ridge to our west retrogrades, a trough will eventually develop over the eastern United States.
722 PM EDT SUN JUN 19 2016 High pressure continues to bring warm and dry weather to the region into Monday afternoon. Monday night a cold front will bring showers and thunderstorms.
(Issued 249 PM CDT SUN JUN 19 2016) A large ridge of high pressure across much of the southeast U. The short term models are generally agreeable in building the ridge of high pressure further southwest into the Tennessee valley region through Monday. The proximity of the upper ridge axis to the forecast area will result in a southwest low level flow setting up across the forecast area.
An elevated E/NE low level flow will continue overnight between frontal boundary south of the area and high pressure ridge to the north. However along the coast onshore winds will persist and keep temps from falling below the low to mid 70s.
1226 AM EDT MON JUN 20 2016 Shower and thunderstorm chances will increase late today and tonight with the approach and passage of a cold front. Expect dry weather for much of the day under upper level ridging. Shower and thunderstorm chances are expected to increase later in the day as the ridge exits and a cold front approaches. The cold front is progged for a Monday night passage.
Gusty northwest to north winds across the area today in the wake of a cold frontal passage last night have been gradually decreasing this evening. Winds have been highly variable underneath the trough. Clear skies and cooler weather was seen across the forecast area in the wake of last nights cold front. Ridge axis moves over the region Monday bringing warmer temperatures in the mid to upper 80s.
732 PM EDT SUN JUN 19 2016 High pressure into Monday.
755 PM EDT SUN JUN 19 2016 Unseasonably strong and cool high pressure will build from the north through tonight. The high will prevail into mid week before shifting south and getting replaced by a trough of low pressure through late week. A cold front will advance into the region and likely stall over or close to the area this weekend. Precipitable water values continue lower as drier air advects south into the area along the backside of an upper- level cyclone spinning well offshore of the North Carolina Outer Banks. Generally favored the cooler side of guidance in this area with lows ranging from the lower-mid 60s inland to the lower- mid 70s at the beaches.
1049 PM EDT SUN JUN 19 2016 Unseasonably strong and cool high pressure will build from the north through tonight. The high will prevail into mid week before shifting south and getting replaced by a trough of low pressure through late week. A cold front will advance into the region and likely stall over or close to the area this weekend. Lows ranging from the lower-mid 60s inland to the lower- mid 70s at the beaches.
403 AM EDT Wed Oct 18 2017 Another pleasant day is in store today as high pressure lingers over the area.
/Issued 256 PM EDT Tue Oct 17 2017/ Quiet fcst period due to regime dominated by strong ridge. Have adjusted guidance blend a few degrees cooler in the far northeast given how temps verified this morning, which does result in some locations reaching the mid 30s with a few hours of supportive lower dewpt depressions. Highs expected in the low 70s for most then overnight lows still cool than normal but moderating a few degrees higher than tonight. High pressure aloft and the surface will continue to build across the area through the end of the week. Both the ridge aloft and at the surface will begin to push off the eastern shore of the US by the early weekend as the next weather-maker moves into the Mississippi River Valley.
554 AM CDT Wed Oct 18 2017 200 AM CDT High pressure is still stretched from central Texas northeast through the Ohio valley and into the mid Atlantic. A second and stronger low pressure system will slide by north of the Canadian border.
High temperatures will be slightly cooler due to less wind and a cooler air mass in place.
105 AM EDT Wed Oct 18 2017 An upper level ridge will build into the region and bring mild temperatures to the area over the next several days. Highs in the 65 to 70 degree range will moderate into the lower to middle 70s by this weekend.
The winds will result as a trough/cold front moves in from the W, increasing the pressure gradient.
416 AM EDT Wed Oct 18 2017 A mid/upper level trough is moving offshore of the US East Coast today. The associated surface cold front will push through south Florida this morning before stalling out over the area through tonight. The highest PWATs associated with the frontal boundary should be far south enough by Thursday.
342 AM EDT Wed Oct 18 2017 High pressure will dominate the short term forecast period, with cooler and drier airmass remaining over the state. Highs today will generally be in the low to mid 70s, except the 60s in the NE GA mountains. Thursday, temperatures will be 4-6 degrees warmer, with temperatures in the low 70s north to near 80s south. Period still starts out dry with a gradual warming trend back to above normal temperatures through the end of the work week as upper-level ridging builds across the region.
An East coast trough, which is a remnant of an early week frontal boundary continues to bring unsettled conditions including a source of local convergence. Scattered to numerous showers along and north of the trough will continue to pivot onshore during the day. Higher rain totals are generally expected along the Atlc coast and the expectations are that the trough will slowly sink Swd during the day while becoming less defined. Onshore flow persists into the upcoming weekend as high pressure remains centered near the mid-Atlantic. Meanwhile, a strengthening ridge aloft will produce subsidence and drying aloft, with moisture levels lowering in response.