Aikyam-Lab/Synoptic-Bench huggingface dataset:
1106 PM EDT Fri Aug 25 2017 Canadian high pressure will build south and east over the region through Saturday night.
716 PM EDT Fri Aug 25 2017 Canadian high pressure will take charge through the weekend providing dry quiet weather with below normal temperatures. A short wave is moving east of the area with the base of one upper level trough. High pressure at the surface over the western Great Lakes will move in tonight with dry air and nearly calm winds. Highs in the low 70s. The base of the upper level trough will move east the rest of the weekend. Slow warming but still cool with high pressure over the northeast US.
948 PM EDT Fri Aug 25 2017 High pressure and dry conditions are expected through the weekend.
12z guidance not indicating any change to the expected weather pattern -- namely one of high pressure bringing dry and seasonable temperatures. Diurnally driven cumulus/strato-cumulus (with perhaps a sprinkle or two) will fade away by early evening with the loss of heating and increasing subsidence from building ridge aloft. Despite the cooler start, highs will be a little warmer, thanks to slightly warmer temperatures aloft and more sunshine. Saturday night will be a near repeat of tonight, though we'll be a few degrees warmer overall because we'll top out warmer during the day. The short term will likely start off with the upper level trough lingering overhead with a minor impulse rotating through.
755 PM EDT Fri Aug 25 2017 Aviation The large Canadian origin high pressure system over the Great Lakes will slide off to the east and southeast over the weekend. That will allow southerly winds to bring in warmer air.
High pressure situated across southeast Canada, or from south of the Hudson Bay to the northern Great Lakes controlled our sensible weather locally. One more night of cool conditions are expected, with lows falling into the low/mid 60s. A broad upper trough axis is xpcted to remain across much of the ern CONUS heading into the weekend, with prevailing wly's remaining in place over the mid TN Valley. Strong area of high pressure over the OH Valley will also begin to shift toward the mid/nrn Atlantic states Sat/Sun. Highs Sat/Sun will also trend very similar to the past couple of days, with afternoon temps again mainly in the mid 80s while overnight lows remain predom in the lower/mid 60s.
Until then, lower than normal temperatures will continue today and tonight, with afternoon highs in the low 80s once again dropping into the low 60s tonight.
/issued 1108 AM CDT Thu Aug 3 2017/ Upper trough axis has moved well south of the area and most of the convection is well off the coast and over the Gulf of Mexico.
147 PM EDT Thu Aug 3 2017 After scattered diurnal thunderstorms this afternoon, a cold front will bring more numerous thunderstorms Friday. Cooler and less humid for the weekend. Surface cold front starts to approach the region overnight and into Friday morning, but any action with the front will hold off until after the near term period later in the day on Friday. Convection associated with an approaching cold front will arrive to southeast OH by 12Z Friday.
This will likely result in a cooler weather pattern across the area compared to recent weeks as 700mb temperatures lower below 10c. There will continue to be a general risk for afternoon and evening thunderstorms which is typical for August, However models do show several strong cold fronts and associated upper level troughs pushing across the the forecast area through the period.
231 PM MDT Thu Aug 3 2017 Northwest flow will be present over much of the Northern Rockies through Friday, with high pressure re-intensifying over the Pacific Northwest.
245 PM CDT Thu Aug 3 2017 WV imagery shows a longwave trough extending from the PacNW to the MS Valley and beyond, buttressed against an upper ridge over the SW CONUS, leaving a long fetch of NW flow aloft over West Texas and Southeast New Mexico. A cold front associated w/the trough is making its way south thru the Central Plains, but observations and models suggest it won't get much further south into Texas before sfc flow veers to the east and halts it. Over the next few days, a trough moving onshore at NoCal, and another digging out of Canada, will flatten the trough south toward Mexico.
A cold front is expected to sweep across Central Indiana tonight.
251 PM CDT Thu Aug 3 2017 Upper closed low south of the Aleutians and a strong Hudson Bay low allowing a sharp warm ridge along the west coast into the Gulf of Alaska. Strong Bermuda high off the east coast with trough from the Hudson Bay low into the Mississippi Valley. Next major wave over the western Provinces of Canada as seen in water vapor and will allow for even cooler air to be rotated into the northern plains.
A cold front will be moving through the region during the period. /Issued 1027 AM CDT Thu Aug 3 2017/ Cold front currently across southeast Kansas and northwest Oklahoma this morning.
259 PM CDT Thu Aug 3 2017 Scattered showers and thunderstorms have developed this afternoon in the vicinity of a cold front that is currently moving across southeast Kansas. Scattered showers and thunderstorms are expected to spread into northeast Oklahoma and northwest Arkansas late this afternoon and evening as the cold front pushes to the south. After a quite Friday evening across the region, the chances of showers and thunderstorms return late Friday night with isentropic lift occurring to the north of the surface boundary as it retreats to the north as a warm front.
A blocking ridge of high pressure remained over WRN Nevada early this afternoon. Looking north, a fairly vigorous disturbance had topped the ridge and was digging SSE through British Columbia and is expected to shear into NE Montana late Friday afternoon a little further north and east of its forecasted track yesterday.
332 PM EDT Thu Aug 3 2017 A cold front will bring showers and thunderstorms Friday afternoon and evening.
Surface cold front pushed through the CWA this morning with convective initiation taking place in Anderson and Coffey counties around 17Z, quickly pushing south of the CWA by early afternoon. Mid-level convection working east off the High Plains this afternoon may bring a few showers to western portions of the area before dissipating by sunset. Surface Canadian high pressure will build southeastward through tonight and bring unseasonably cool weather to the region tonight into tomorrow. Lows will range from the low 50s NE to the upper 50s SW, with residual midlevel clouds helping to keep temps warmer in the south. The center of the high will move east by late Friday afternoon with return southerly flow setting in by tomorrow evening. The deepening lee side trough will support a strong low level jet overnight, which will focus moisture convergence across the area.
301 PM CDT Thu Aug 3 2017 Cooler and drier air will continue to spread into the area tonight through Friday as upper trough currently moving into the lower Missouri Valley this afternoon swings east and digs across the Ohio Valley. Will carry a period of sprinkles for the early evening in northern and eastern parts of the area as upstream radars show some light returns dropping south with the upper trough this afternoon.
405 PM EDT Thu Aug 3 2017 A weak low pressure trough will linger over the area tonight, then dissipate Friday.
336 PM EDT Thu Aug 3 2017 A cold front will approach the region tonight and move through on Friday.
Despite the warm and muggy conditions tonight, relief is on the way with an approaching trough and associated cold front increasing chances for precipitation tomorrow. Daytime heating in combination with the cold frontal passage will allow for scattered coverage of storms across the region. A shift to northerly winds coinciding with the frontal passage will bring lower dew points and cooler temperatures Friday night, with lows near 60 in our northern areas and closer to the mid 60s in Memphis and north Mississippi.
225 PM EDT Thu Aug 3 2017 Weak high pressure will remain centered near the Mid-Atlantic coast through this afternoon before sliding farther offshore Friday.
327 PM CDT Thu Aug 3 2017 Daytime heating over the southwest Panhandle along a very slow moving cold front was leading to modest thunderstorms, close to the depiction of majority of the short term solutions.
244 PM MDT Thu Aug 3 2017 Upper level ridge has shifted west over CA bringing increasing NW flow over the state. Currently the passage of a cold front earlier today as left strong NNE flow on the plains and cloud cover keeping conditions more stable. Upper level SE flow will allow for some storms to move off the higher terrain and onto the wester portions of the plains and south to the Palmer Divide through the late afternoon. With increasing sunny skies and downsloping temperatures will rebound back into the lower 80s.
1103 AM MDT Thu Aug 3 2017 Strong upper ridge is sitting across the far western CONUS and just offshore across the eastern Pacific. Upper trough remains centered over the MS valley with NW flow aloft over the northern plains. Surface obs show high pressure over eastern MT/western Dakotas. Temperatures will feel much cooler today with highs in the 60s across the Black Hills and 70s over the plains. High pressure will slide east of the region Friday with southeast flow developing. The area will see warmer temps with highs in the 70s over the Black Hills and 80s over the plains.
Otherwise a sharp cold front will drive east across the area late tonight into early Friday morning with scattered thunderstorms expected.
a cold front will be dropping south into the state through the morning hrs. Today through Friday night Latest water vapor imagery continues to show ridging over the western United States and subsequent downstream troughing over the nations mid section. Temperatures will be cooler on Friday behind the boundary and will continue to average below normal across the entire CWA.
Any chances for thunderstorms tonight will shift southward to near and along the Oklahoma border as a cold front continues to push south across the Texas Panhandle and western Oklahoma. Cooler air will filter down into western Kansas tonight dropping H85 temperatures well down into the mid teens(C) across much of the area. A developing lee side trough of low pressure will strengthen across eastern Colorado Friday setting up a moderate southerly flow across western Kansas. This will enhance warm air advection into the western part of the state allowing highs to push the lower to mid 80s(F) Friday afternoon.
Eastern US upper trough will remain in place through the weekend with impulses rotating through each day.
321 PM CDT Thu Aug 3 2017 Cold front has moved through the forecast area this afternoon, while drier, cooler air has gradually drifted in behind. Have steered clear of bias-corrected guidance and lowered temperatures to a blend of raw model solutions, which brings lows into the low 50s for most locations. Full sun and light winds will allow temperatures to climb into the upper 70s to near 80 degrees tomorrow even in the wake of the cold front, but even the warmth will feel quite a bit different with dewpoints lingering in the low 50s throughout the day.
548 PM EDT Thu Aug 3 2017 A cold front will bring showers and thunderstorms Friday afternoon and evening. A isolated convection mention was maintained for the entire overnight period given moisture and increasing overall ascent on the eastern flank of the eastward digging upper trough, centered over Minnesota this afternoon. The associated cold front of that system will increase rain chances and bring the potential for severe weather Friday afternoon into Friday evening. Frontal/prefrontal trough passage may not also not coincide with better shear values.
349 PM EDT Thu Aug 3 2017 Thunderstorms will continue across the area through early tonight ahead of a strong cold front and associated vigorous upper level system. Much cooler weather will arrive Friday with highs only in the 60s over northwest Indiana and the lower 70s over most of northwest Ohio.
356 PM CDT Thu Aug 3 2017 Autumn-like cyclone over the region this afternoon will lift northeastward as it matures tonight. The rain will gradually end from west to east as the low departs. Temperatures will trend slightly warmer for the end of the work week with highs in the upper 60s to middle 70s. This should result in at least small chances for precip just about every day, as well as temps being near normal or slightly below as the primary heat and humidity axis remains shunted off to our south by several intrusions of Canadian-source high pressure behind each departing disturbance.
/ISSUED 1027 AM CDT Thu Aug 3 2017/ 12z soundings support high temps between 88-90 degrees this afternoon with convective temps also between 88-90 over the north to the lower 80's over the south.
354 PM EDT Thu Aug 3 2017 Weak high pressure will centered near the Mid-Atlantic coast slides farther offshore Friday.
1217 PM CDT Thu Aug 3 2017 Cold front over Nebraska and Iowa is approaching far northwest Missouri early this morning. A large area of high pressure will quickly build in from the north behind the front tonight. Cooler and drier air associated with this system will bring autumn-like temperatures to the area for Friday with highs only in the upper 70s and dewpoints in the lower 50s.
339 PM CDT Thu Aug 3 2017 A cold front will move southeast across Oklahoma into north Texas tonight into Friday.
306 PM CDT Thu Aug 3 2017 High pressure persist over the western CONUS and broad low pressure remains over the eastern CONUS. Convection is increasing along a stalled cold front now located just north of the I40 corridor. Latest mesoanalysis does suggest a swath of MLCAPE values around 1500 J/kg along the front, and 500mb temperatures are cooler at around -8 degrees C, so can't rule out some isolated low end severe hail producers with any storm that is able to become multicellular or with any brief mesocyclonic development. There may be a lull in activity on Friday except for any isolated convection that moves off the higher terrain into our western zones in the evening and any left over convection from the overnight activity in the southern/eastern zones in the morning.
343 PM CDT Thu Aug 3 2017 (Today and Friday) Our area is currently under weak northwest flow aloft, with a prominent ridge over the southwestern CONUS and parts of the West Coast, and an upper trough diving southeast into the upper Midwest. A disturbance in the northwest flow aloft is expected to initiate convection over northeastern New Mexico through late this afternoon, while additional showers and thunderstorms develop over parts of the Texas Panhandle in association with a weak cold front. The aforementioned cold front will sag south across parts of the Red River Valley overnight, and should remain nearly stationary just north of our area on Friday. With 850mb temperatures slightly higher on Friday, highs are expected to be in the lower to mid 90s across our area.
317 PM EDT Thu Aug 3 2017 A cold front will remain stalled over southern Quebec through tonight and will lift north on Friday.
205 PM MDT Thu Aug 3 2017 Western CONUS upper ridge is putting the northern plains in northwest flow, and an upper low as pushing into the Great Lakes. Winds are generally northerly around 10 kts, and temperatures behind yesterday's cold front are only in the 60s. Temperatures will warm into the lower 80s.
1251 PM CDT Thu Aug 3 2017 Cool and breezy day will feel more early fall-like, under the influence of strengthening low pressure. Upper level trough currently digging into northeast South Dakota early this morning will continue to dive southeast through southwest Minnesota around midday, then exit the area this evening. Ongoing showers mainly focused near the stronger dynamics along the highway 14 corridor will also continue to rotate around the upper low this morning. Activity will taper off from west to east this afternoon as the low exits the region. With the cool airmass and clearing skies, lows tonight will also be quite a bit cooler than recently, with lows in the mid 40s to near 50.
GOES 16 water vapor satellite imagery and RAP analyses indicate a weak trough over Iowa, but the more significant trough is moving into southwest Minnesota. Complex weather today with pair of upper level troughs making a muddle of the details. Friday Breezy, cooler, and less humid. Therefore, as the low stratus clouds pull away to the east and 850 mb temps warm, sfc temps will reach the lower to middle 70s for most of E Iowa/NW Illinois.
118 PM EDT Thu Aug 3 2017 Rain chances will gradually increase into Friday as a cold front approaches the region. Thus, the highest PoPs remain constrained to the northern CWA, but by late afternoon and evening, there will be a chance of showers and thunderstorms just about everywhere.
1225 PM CDT Thu Aug 3 2017 We will remain within northwest flow as a cold front has cleared our area today. This will place lows well down into the lower to mid 50s, and even some 40s up by Ord and in our northern and northeastern CWA. This is a cool and wetter than normal pattern for us with an upper trough over central Canada down into the northern plains.
Western extension of an Atlantic ridge reaching central Florida today will lift north tonight.
1207 PM CDT Thu Aug 3 2017 A cold front will slide southward across Kansas today with scattered showers and thunderstorms expected to develop over southern Kansas mainly for this afternoon into tonight. The low level jet will respond with increased moisture transport ahead of this system, which should generate elevated showers/storms late Friday night mainly for central Kansas and areas to the north.
Low pressure currently situated over western Wisconsin will continue to push east through the evening. A substantial area of clearing has developed across our west ahead of the cold front, which is currently in the vicinity of the Mississippi River. Once the cold front moves through the area, brisk northwest winds will usher in much cooler temps. Moreover, the lowest levels of the atmosphere look rather saturated through at least mid day, keeping clouds in place until the afternoon. We may even see a few showers on the backside of the low, especially toward our north.
201 PM EDT Thu Aug 3 2017 A cold front will cross the Ohio Valley on Friday with showers and thunderstorms found along it. High pressure will build in for the weekend and bring drier air and cooler temperatures. Later overnight, a cold front will be approaching from the west, with thunderstorm activity found along it. The cold front will be east of the CWA at the beginning of the period with rapidly drying and cooling air found behind it for the overnight and rest of the weekend.
1243 PM CDT Thu Aug 3 2017 Warm advection and moisture convergence along and ahead of a pre- frontal trof at 850mb continues to produce isolated convection across parts of west central Illinois this morning. This wave will dig southeast today and tonight, amplifying the longwave trof over the eastern CONUS as it progresses. The low will move east-northeast this afternoon and tonight, driving a cold front through Missouri and Illinois. Carney Cold front and precipitation associated with it to exit region by daybreak on Friday.
The overall pattern will feature an upper level ridge of high pressure across the western states with an upper level trof over the eastern part of the country. For today and tonight, a weak cold front will slowly move southward across the area.
312 PM EDT Thu Aug 3 2017 A cold front will approach the region from the northwest on Friday and bring a good chance for showers and thunderstorms to the region, especially west of the Blue Ridge, late Friday afternoon into Friday night. High pressure will then bring fair and somewhat cooler weather for the first part of the weekend.
Have made a number of alterations to the current package, mainly to cover the convective outflows and influence on the wind field as well as on inflow winds in the Lower Valley for a little while longer. Expect that area to nudge south through the afternoon and probably support additional development toward the Lower Valley. or whether it runs quickly south and overtakes the low levels and minimizes development.
Mid level drying will continue to work northward from south FL around the Atlantic ridge across the southern half of the forecast area. 0 inches) across nrn sections should see a low chance of showers and storms across nrn sections by late afternoon, with the highest chances across Volusia county. Highs will reach the lower 90s near the east coast and the mid 90s across much of the interior.
Synoptic Setup: A hot high pressure heat dome lies over the western third of the CONUS and southern British Columbia. A much cooler trough drops down from the Hudson bay through the northern half of the US Plains. Northwest flow has set up between these two large airmasses with northeast Montana under the cooler side of this flow pattern.
Somewhat weak but persistent Q-G forcing ahead of an upper trough axis over the central Gulf Coast states will persist, helping to sustain elevated rain chances overnight.
247 PM MDT Thu Aug 3 2017 High pressure will maintain mainly clear and dry conditions through Friday morning.
309 PM EDT Thu Aug 3 2017 High pressure will remain offshore through Friday.
We will remain within northwest flow as a cold front has cleared our area today. This will place lows well down into the lower to mid 50s, and even some 40s up by Ord and in our northern and northeastern CWA. This is a cool and wetter than normal pattern for us with an upper trough over central Canada down into the northern plains.
601 PM EDT Thu Aug 3 2017 A cold front will remain stalled over southern Quebec through tonight and will lift north on Friday.
Clearing skies overnight have allowed temps to drop into the low to mid 20s for many valleys across western Montana and north central Idaho, with some valleys seeing patchy fog. This could very well be the only weather features we experience across the region today, as brief high pressure should make for a mild and dry Saturday. Conditions will begin to change on Sunday as our next cold front approaches from the west.
Winds will begin to increase along the western foothills today as surface pressure gradients tighten in response to high pressure building over SE Idaho/NW Wyoming. Precipitation begins to move into far western areas late Sunday night as a Pacific cold front approaches.
/issued 405 AM CST Sat Nov 25 2017/ Mild temps prevailed early this morning, with most of the Midsouth in the 50s, ahead of a Pacific cold front over the southern MO. By afternoon, light winds will accompany the mild temps, with a 1024mb pressure ridge axis centered along the I-40 corridor. Sunshine will continue early the week, as low level southerly winds return in advance of an approaching upper low over the southern plains.
1019 AM EST Sat Nov 25 2017 A weak cold front will move through the Ohio Valley this morning. High pressure will build in behind the front, persisting into the middle of the work week, offering continued dry weather. A weak cold front bisects the region late this morning. Mid level trof axis to pivot east of the region with northwest flow developing. Expect temperatures to be near normal with lows from the upper 20s north to the lower 30s south. Temperatures look to be a little below normal with highs on Sunday ranging from the lower 40s north to the upper 40s south. Upper trough will be centered over New England to start the period, while a ridge dominates to the west, leaving the Ohio Valley under a northwest flow aloft.
A cold front will move across the area before noon local time and should pass through all TAF sites by 25/21z. These clouds are a result of some elevated moisture along and ahead of a cold front shifting southeast today, eventually pushing into our area this afternoon. In the meantime, south winds ahead of the front will aid in a quick warm-up today with temperatures warming from the 40s this morning into the lower to mid 70s by this afternoon. The new work week will usher in a warming trend as south winds return and upper ridging builds farther east into the area from the SW.