Aikyam-Lab/Synoptic-Bench huggingface dataset:
643 AM EDT THU JUN 16 2016 Low pressure will drop southeast across the area today. a cold front will accompany the low as it moves through. High pressure will follow. Expect showers and thunderstorms to redevelop in the late morning and afternoon across the area ahead of the low. This evening and overnight the low will continue southeast as high pressure builds from the northwest.
Cooler air will work in later tonight into Thursday behind a cold front which may generate a few showers. Fair weather conditions are then expected Friday into the upcoming weekend as high pressure builds in. Convection across east-central/northeast WI on leading edge of a vigorous upper level circulation/cold front will continue east into MI along instability gradient tonight. A secondary area of possible concern may need to be monitored for late evening/early portions of overnight as additional clusters of storms are expected to develop across central Wisconsin this afternoon downstream of increasing diffluence with potent upper low/upper jet streak. Upper low will shift southeast across the region on Thursday with strongest synoptic forcing across eastern half in the morning, where have maintained low to mid chance PoPs.
609 AM EDT THU JUN 16 2016 Low pressure over Newfoundland will continue to move slowly east through Friday. A ridge of high pressure will gradually build into the region through the weekend with much warmer weather.
310 AM MDT THU JUN 16 2016 An upper level ridge over the central part of the country will keep a warm and dry southwest flow aloft over Colorado. Temperatures will be similar to a couple degrees warmer than yesterday. Airmass will be very dry again with a few afternoon cumulus clouds possible over the higher terrain, otherwise clear skies are expected to prevail through tonight. a weak southwesterly flow will be over CO with the ridge centered over southern NM.
328 AM EDT THU JUN 16 2016 The weather will be fair and seasonable through the weekend as high pressure dominates. The cloud cover will be the result of a low pressure system tracking southeast from the Ohio Valley into the Middle Atlantic region. Meanwhile high pressure will dominate the weather across the northern half of the area. Fair and dry weather is expected from tonight into the upcoming weekend as a sprawling ridge of high pressure settles across the northeast.
1118 PM MDT WED JUN 15 2016 A trough will be nearly stationary over the Pacific NW over the next 36 hours creating a gradient between the strong high pressure in place across the southcentral US.
1121 PM MDT WED JUN 15 2016 Early afternoon WV imagery and RAP analysis shows ridging across the Central US with a long fetch of drier air advecting from Mexico across the Southern Plains into the High Plains region. Position of trough axis/convergence zone and decreasing TD trends in our CWA backs up latest HRRR/RAP trends keeping initiation and movement away from our CWA. High temperatures will be very similar to today (if not slightly warmer) ranging from the upper 90s to around 100F once again. Temperatures remain warm due to upper level high pressure throughout the period. Thursday night, the upper ridge axis has pushed east of the area and centers over the Plains. On Friday, high pressure amplifies and moves over the desert southwest.
1208 AM CDT THU JUN 16 2016 Deep ridge building in overhead will result in extreme heat tomorrow into Friday which remains the primary weather concern. For this evening, a small area of subsidence on the south side of a low-level ridge has led to deep mixing and hot yet drier conditions across areas north of the Missouri River. With ridging overhead, there won't be much forcing to tap into this instability, but an isolated storm or two may be able to fire along a wind shift across northern and central Missouri during the afternoon. For Friday, low-level ridging across the Great Lakes will allow a weak back door cold front to spread westward into much of northern and central Missouri, cooling these areas off by 5 to 10 degrees.
Temperatures will average several degrees cooler than normal through Friday. Upper level low continues to reside over the Eastern Pacific off the Pac/Northwest coast this morning. Water vapor satellite imagery indicating short range models have a good handle on the upper level pattern as it shows the low spinning off the Pac/Northwest coast. strong onshore flow will continue to produce breezy winds along with cooler then normal conditions for Central California. Models begin lifting the upper low northeastward on Friday toward the British Columbia area. As the upper low lifts northeast, a high near the four corners area will become the dominate feature for the second half of the forecast cycle.
420 AM EDT THU JUN 16 2016 A cold front will cross through the forecast area today, bringing chances for showers and isolated thunderstorms. Temperatures will be cooler, with highs only reaching into the 60s and 70s in the north. A potent upper level low/associated 50 knot jet streak will sink southeastward towards the east coast through tonight. As a result, the CWA will be under cyclonic flow aloft/CAA, with the cold front drifting southeastward through the day. The best forcing for precipitation is in the morning, then we are under large scale subsidence with the building ridge aloft. In the wake of the surface cold front, which is at the doorstep of our western CWA as of 08z, we'll see cooler and less humid conditions.
The best chance of seeing some of this action will be at TRI and TYS where there will be just a little more moisture and lift available due to proximity to the long wave upper trough dropping southeast out of the Great Lakes through the Mid Atlantic Coast.
As mentioned above, the influx of drier air will begin to mix down into the lower levels heading toward the end of the work week. This will be aided by a very strong upper ridge pattern building from the srn Plains into the OH Valley/Great Lakes states. As this pattern evolves, a weak cold front will move swd through the local area Fri morning, with a few more showers/tstms possible along/just ahead of the approaching boundary. This sets the stage for what looks to be a very nice and seasonal weekend, as strong high pressure at the sfc builds swd along the Atlantic coastal states.
514 AM EDT THU JUN 16 2016 Crossing low pressure will bring showers and thunderstorms to the Upper Ohio Valley Region today. Rain chances will rapidly escalate today as deepening low pressure is digging southeastward across the Great Lakes, with passage across the Upper Ohio valley region expected by late evening. Limitations included a weakening wind field and relatively warm mid levels, but these are expected to be offset as lift improves with the low advancing toward a very moist, and diurnally- destabilizing airmass. Dry mid level air is also progged to advect into the advancing low, enhancing downdraft CAPE and thus wind gust and cold pool potential with MCS possibility along the trailing cold front. Building high pressure will improve conditions rapidly behind the exiting low.
with strong ridging aloft across the central conus and extending into the lower Mississippi Valley and central Gulf Coast region keeping things quite toasty across the forecast area through the end of the work week. The mid and upper level ridging and lowering precipitable water values will inhibit much in the way of convection through Friday. 11 A change in the weather pattern will occur over the weekend as a deepening upper trough along the east coast pushes a weak backdoor cold front into the area while the mid/upper level ridging centered to our west retrogrades somewhat resulting in it have less of an influence over the central Gulf Coast region.
1051 PM PDT WED JUN 15 2016 A deep low pressure system over the region will continue cool and showery conditions into the weekend. Dynamics aloft will be favorable for precipitation in this portion of the region, but low level upslope flow into the higher terrain will also aid in generating favorable lift. Best chances for showers will be over the mountains with the lower chances over the interior basin.
A cold front will then move through the area Thursday, bringing cooler and less humid conditions for Friday into the weekend. Highs will range from the lower 80s in the north to around 90 in nrn KY. Highs will be in the lower 80s across the fa. Cooler and drier air will begin to work in Friday night. Closed upper low will be crossing northeast Ohio on Thursday. Though most precip should occur on the east side of the low where lift will be most enhanced, a few showers and thunderstorms may still develop in the ILN area, affecting mainly northeast counties. Isolated to scattered convection may persist over far eastern locations Thursday night and Friday as the upper low opens up and drops southeast across the Mid Atlantic states.
Other forcing was produced by a mid level warm front working into northeast Montana overnight. High temperatures will be warmer today over western and central zones with less cloud cover. The east will also be slightly cooler behind a weak cold front.
Latest near/short term PV analysis, real-time data, forecast model soundings and computer simulations continue to suggest dry and warmer conditions will continue over the forecast district into Thursday as upper ridging develops over the region. Overall, minimum and maximum temperatures during the next 24 hours should run a degree or two warmer than values noted previous 24 hour temperatures.
314 AM CDT THU JUN 16 2016 Hot and humid continue to be the words of the day as area remains dominated by area of high pressure aloft.
646 AM EDT THU JUN 16 2016 A cold front will cross through the forecast area today, bringing chances for showers and isolated thunderstorms. Temperatures will be cooler, with highs only reaching into the 60s and 70s in the north. A potent upper level low/associated 50 knot jet streak will sink southeastward towards the east coast through tonight. As a result, the CWA will be under cyclonic flow aloft/CAA, with the cold front drifting southeastward through the day. The best forcing for precipitation is in the morning, then we are under large scale subsidence with the building ridge aloft. In the wake of the surface cold front, which is at the doorstep of our western CWA as of 08z, we'll see cooler and less humid conditions.
1051 AM EST Wed Dec 28 2016 A cold front will continue to push south of the area today and stall. The front may return northward as a warm front tonight. A stronger cold front will cross the area Thursday.
524 AM CST Wed Dec 28 2016 As 1025mb high currently centered over the Ohio River Valley continues to shift off to the east, an increasing southerly flow will bring warmer air into central Illinois today. A cold front analyzed across the Dakotas at 08z/2am will quickly push eastward, reaching the Illinois/Indiana border by early evening.
while high pressure is noted centered over the nern Gulf. and in fact with no push aloft, srly flow around the high centered to our east should shove the front back nwd through the day.
435 AM MST Wed Dec 28 2016 Latest upper air analysis shows a long wave trough digging south across the CONUS. At the surface a pre-frontal trough had moved through from the northwest. Behind the trough south winds had turned to the west. This morning a weak cold front will move through from the northwest. Thursday the high pressure will continue to move through the area causing winds to be light over East Central Colorado in the early afternoon. Breezy winds will develop ahead of the high pressure but will decline as the high continues eastward. CAA will persist behind the high pressure so highs will be a few degrees cooler than yesterday.
1051 AM EST Wed Dec 28 2016 Fog has been slow to lift this morning with the low sun angle, especially over SW NC.
According to these forecast models the best possibility of snow will be over the higher elevations of Routt county. The 0600Z run of the NAM12 is showing a ridge developing over the Inter-mountain West on Thursday. This ridge will provide a period of dry weather and clear skies on Thursday. With these clear skies in mind expect overnight temperatures to be a few degrees cooler tonight into Thursday.
359 AM PST Wed Dec 28 2016 High pressure will bring fair and mild weather through Thursday.
Low level west to southwest flow will sweep the low level moisture out of much of the area from 17-19Z, so going with mainly VFR through the rest of the TAF forecast period. Winds from the west today, ahead of an approaching cold front, will help push afternoon highs for today, mainly in the mid to upper 70s. The cold front will begin to move into our Interstate 20 corridor this afternoon.
409 AM MST Wed Dec 28 2016 Current surface analysis shows a cold front from central ND to northwest Neb, moving quickly south and east. Upper level analysis shows trof axis over the western Dakotas moving quickly eastward with strong upper jet over the area. Slightly cooler air in place for Thursday, with highs in the mid 20s to mid 30s under mainly sunny skies.
Patchy MVFR CIGs will redevelop late this evening and then erode to VFR skies from north to south overnight into early Thursday morning as a cold front moves across our area. South to southwest winds 5 to 10 KTs today into this evening will shift to north and increase to 15 to 25 KTs with gusts up to 30 KTs overnight into Thursday morning as the cold front moves across our area. This should be the last day however as a strong cold front passage is progged to move through early Thursday morning. Temperature wise, while this will indeed cool afternoon highs for Thursday about 20 degrees from today, low temps should stay above freezing, with only the northern third of the CWA and locations in the Hill Country falling into the upper 30s.
515 AM CST Wed Dec 28 2016 A jet max over the eastern Pacific moves over the northern plains deepening an upper level trough extending down to the surface as a cold frontal boundary over northern Nebraska. Ahead of this boundary southwesterly winds advance a weak thermal ridge over the area this afternoon resulting in temperatures slightly higher than model guidance indicates with highs in the low 50s. This cold front will push through the area late Wednesday into Thursday morning shifting the winds to the NW.
403 AM CST Wed Dec 28 2016 Fairly quiet forecast through the next 7 days with a handful of cold frontal passages. The post-frontal airmass will be well entrenched over the area on Thursday and will keep our high temperatures roughly 10 to 15 degrees cooler than Wednesday.
After high pressure moving off to our east gives us a sunny morning, clouds will begin to increase by mid/late this afternoon ahead of a cold front approaching from the west. The cold front to our west today will sweep across the region tonight, accompanied by widespread showers. Thursday a deep upper trof will dig from Canada across the Great Lakes. While we may get some sun in the morning behind the departing cold front, by afternoon CAA stratocu is expected to sweep into the region from the north. These factors will make for a blustery day with the mercury struggling to get into the lower/middle 40s.
550 AM CST Wed Dec 28 2016 It will remain unseasonably mild the next few days, though briefly cooler on Thursday. The upper trough moving into the northern Plains this morning will amplify as it moves into the Upper Midwest/western Great Lakes later this afternoon/evening. Gusty northwest winds and a bit cooler on Thursday, though still several degrees above seasonal climo.
Strong 120kt jet core has nosed into northwest Colorado overnight with gusty winds over the mountains while light snow has spread over the higher northern mountains. Will continue with the winter weather advisory through today especially given the strong winds over the passes though snow amounts are on the low end of the advisory. Across lower elevations, cooler today with readings back to seasonable normals over the urban corridor but not much change in temperatures over the far plains. Some clouds on the plains this morning with the trof passage then becoming mostly sunny this afternoon. An upper ridge with decreasing winds aloft will build over the area Thursday. This will result in colder minimum temperatures in the mountain valleys and over the low spots over the plains, but warmer minimum temps near the foothills and Palmer Divide.
Cold with dry conditions as a weak ridge builds across the Great Basin.
630 AM EST Wed Dec 28 2016 High pressure will briefly build across central North Carolina today. The next cold front will move across the area during the day Thursday. Then, a colder Canadian high pressure system will move into the Southeast U.
633 AM EST Wed Dec 28 2016 High pressure will be situated east of the area today.
336 AM PST Wed Dec 28 2016 Weak high pressure will keep dry conditions and temperatures near normal through Thursday.
743 AM EST Wed Dec 28 2016 High pressure will move across Pennsylvania today with cooler temperatures. Complicated pattern develops over region east coast tonight with approaching cold front bringing a chance of light snow to the western half of cwa overnight.
The main change was to add some dense freezing fog in the Upper Snake Plain extending up toward the Montana border.
Winds from the west today, ahead of an approaching cold front, will help push afternoon highs for today, mainly in the mid to upper 70s. The cold front will begin to move into our Interstate 20 corridor this afternoon.
Conditions will improve as a cold front moves through the region. /Issued 300 AM CST Wed Dec 28 2016/ Another unseasonably warm day is on tap for eastern Oklahoma and western Arkansas even with a cold front slated to move through the region this afternoon. There is still a small chance of showers and thunderstorms across portions of southeast Oklahoma and west-central Arkansas Today in association with the approaching cold front. While temperatures will be cooler on Thursday in the wake of the departing cold front, they will still be above normal for this time of year.
1020 AM EST Wed Dec 28 2016 Quiet conditions will continue today ahead of a cold front that will bring a mix of rain and snow tonight.
749 AM EST Wed Dec 28 2016 Quiet conditions will continue today ahead of a cold front that will bring a mix of rain and snow tonight.
536 AM EST Wed Dec 28 2016 Broad, deep layered high pressure lingers across the Florida Peninsula, with its surface component centered in the eastern Gulf of Mexico as indicated by SPC's Mesoscale Analysis. The anticyclone responsible for much of our recent heat wave will continue weakening while shifting westward Wednesday and Thursday as a re-organization in the upper level pattern begins.
Elsewhere, temperatures range from the upper teens and lower 20s in the colder mountain valleys to the lower 40s in the milder thermal belts of the northern Sierra west slopes and foothills. Overnight temperatures will continue to be below average in the valley the next few nights under clear skies, but we don't expect hard freeze conditions under building high pressure and a warming airmass.
A cold front will move south through the region tonight with gusty northeast winds behind it. In the meantime an upper level trough moving across the northern states will drop a cold front south through the forecast area tonight resulting in temperatures returning to near normal by Thursday morning.
302 AM PST Wed Dec 28 2016 High pressure will continue to create strong valley inversions, light winds, and reduced air quality in some valleys through Thursday.
The mean layer ridge persists over the Gulf of Mexico, although its integrity has been eroded. Temperatures range from the upper 70s to lower 80s with dewpoints in the lower 70s. Isolated showers persist within a stubborn area of weak veering, just south of the Lower Keys.
401 AM CST Wed Dec 28 2016 A warm front lifted north through North Texas overnight. A cold front is expected to move into the Bowie to Graham areas mid afternoon and to near a Sulphur Springs to Cleburne to Goldthwaite line shortly after sunset. Lows tonight will range from the upper 30s northwest to the lower 50s southeast.
Partially cloudy skies and a southwest wind solidifies the high likelihood that the city and surrounding areas will top out in the 80s for the fifth consecutive day. Dew points in the lower 70s over cooler nearshore Gulf and Bay waters will maintain sea fog just off the coast during the day. A cold frontal passage across the forecast area during the overnight Thursday morning hours will veer winds around to moderate north to northeast and provide a break in this persistent late year warmth.
Despite veering winds ahead of the next cold front, additional moist advection may prevent the layer from fully scattering out until the boundary arrives late this afternoon. /ISSUED 425 AM CST Wed Dec 28 2016/ A warm front lifted north through North Texas overnight. A cold front is expected to move into the Bowie to Graham areas mid afternoon and to near a Sulphur Springs to Cleburne to Goldthwaite line shortly after sunset. Lows tonight will range from the upper 30s northwest to the lower 50s southeast.
Scaled back on winds a bit from previous forecast for all but the higher terrain of southwest ND which has the better potential to tap into the stronger winds off the surface and also where models show the best pressure rises. Winds decrease from west to east on Thursday as the high pressure builds into the plains.
939 AM EST Wed Dec 28 2016 High pressure will be situated east of the area today.
638 AM CST Wed Dec 28 2016 This morning a warm front was lifting North across East Texas and parts of Northwest Louisiana and a result was patchy dense fog and light drizzle. Later during the day rain and isolated thunderstorms will be possible across the Four State Region along and ahead of a cold front that will be advancing into the area. A broad upper trough of low pressure amplifying South in the mid section of the country.
This should be the last day however as a strong cold front passage is progged to move through early Thursday morning. Temperature wise, while this will indeed cool afternoon highs for Thursday about 20 degrees from today, low temps should stay above freezing, with only the northern third of the CWA and locations in the Hill Country falling into the upper 30s.
625 AM EST Wed Dec 28 2016 A cold front will move south of the area around sunrise allowing weak high pressure to cross the area today. The front may return northward as a warm front tonight. A stronger cold front will cross the area Thursday.
511 AM CST Wed Dec 28 2016 A cold front will move across the TAF sites today switching the winds around to the northeast. /Issued 403 AM CST Wed Dec 28 2016/ Fairly quiet forecast through the next 7 days with a handful of cold frontal passages. The post-frontal airmass will be well entrenched over the area on Thursday and will keep our high temperatures roughly 10 to 15 degrees cooler than Wednesday.
Snow showers and breezy winds will taper off by this evening as high pressure briefly returns to the area.
High pressure will become established across the region though much of the remainder of the week, allowing inversion conditions across most valleys.
322 AM MST Wed Dec 28 2016 Current surface analysis shows a cold front from central ND to northwest Neb, moving quickly south and east. Upper level analysis shows trof axis over the western Dakotas moving quickly eastward with strong upper jet over the area. Slightly cooler air in place for Thursday, with highs in the mid 20s to mid 30s under mainly sunny skies.
Widespread low stratus and fog might occur late tonight as there was a large area lingering over the Gulf and a light boundary layer westerly flow will develop ahead of cold front moving through the southeast states. Good boating conditions with ridge axis over the area and winds less than 10 knots.