Aikyam-Lab/Synoptic-Bench huggingface dataset:
A few sprinkles could develop south of Jacksonville to Springfield to Taylorville this evening, otherwise dry conditions are expected in the short term, under high pressure. Deep layer SW flow will bring increasing warmth to Illinois, as a warm front begins to develop across northern Illinois. A noticeable warmup is expected, with highs about 15 to 20 deg warmer than today.
Once again, highs should reach the lower to middle 80s, with Monday morning lows in the 60s. At this time, it would appear that our weather will be influenced more by the digging upper trough across the eastern corn belt and OH valley.
349 AM EDT Sun Aug 27 2017 High pressure will continue to produce dry weather and comfortable temperatures for most of this upcoming week.
212 AM EDT Sun Aug 27 2017 Canadian high pressure will remain in charge through Monday providing dry weather and below normal temperatures. High pressure remains in control today. Highs maybe a touch warmer than yesterday in low-mid 70s. High pressure slides more over New England, but maintains a ridge axis through CNY and NEPA.
The upper high will remain firmly entrenched over the Great Basin during the next several days.
The clouds and winds should help to keep lows tonight about 3-5 deg warmer than last night, with upper 50s to low 60s expected. Likewise, high temps tomorrow will be a couple deg warmer than today. Strengthening 1029 mb high pressure over western Quebec and ridging sw across the central Great Lakes and into central IL was providing another nice late summer day to the area. Highs Sunday mostly in the lower 80s, ranging from 79F at Galesburg to near 85F at Lawrenceville where more sunshine possible. Chances of showers and thunderstorms spreads se toward I-70 during Sunday night as cold front moves se into central IL. A 577 dm 500 mb cutoff upper level low over northern MN deepens to 573 dm as it drops SSE to near Madison WI by sunset Monday and se into northern IN on Tue.
The upper rdg is fcst to rmn in place ovr the Wrn states, with a broad upr trof ovr the Ern half of the U.
359 AM EDT Sun Aug 27 2017 High pressure will continue to produce dry weather and comfortable temperatures for most of this upcoming week.
243 AM EDT Sun Aug 27 2017 The forecast area will be between a frontal boundary off the southeast coast and high pressure ridging southward along the Appalachians today. An area of low pressure will develop along the front and lift northeastward. The low will be off the South Carolina coast Monday. An area of low pressure will remain off the east coast of Florida.
Under the cloud cover temps are a little warmer this morning and range from the mid 60s along the KY border to lower 70s in north Mississippi.
429 AM MDT Sun Aug 27 2017 The upper level trough, which brushed far eastern Wyoming and the western Nebraska panhandle yesterday, is continuing to move east into the central plains this morning. A large MCS has formed ahead of the trough axis and is moving through central Nebraska bringing very heavy rainfall and gusty winds. Otherwise, northerly flow across southeast Wyoming and western Nebraska will result in slightly cooler temperatures today with highs in the upper 70's to middle 80's. Very similar conditions will exist on Monday with high temperatures a few degrees warmer as the upper level high drifts eastward and intensifies.
128 AM EDT Sun Aug 27 2017 Dry conditions will persist through Sunday with lows tonight in the low to mid 50s and highs on Sunday in the mid to upper 70s.
This will help push weak surface cold front south into the forecast area after sunrise as remnant showers and storms begin to creep into the area along the KS/NE border.
Aloft - A trough down the eastern seaboard from Quebec to FL continues through tonight then lifts north and slides offshore Mon. allowing an Atlantic ridge to build in across FL and into the east Gulf. Surface - An elongated trough of low pressue resides along the I-4 corridor until Mon when the main center of the trough exits offshore northeast FL. but trailing troughiness back to central and parts of northern FL. The Atlantic subtropical ridge moves out of Cuba and into southern FL Mon. around the trough. pulls away Mon as the subtropical ridge approaches. 6 inches with the highest amounts over southern and far eastern locations. energy from the troughs. Temperatures will run above normal for the lows while the highs will be on the cool side.
Strong high pressure over the western United States will maintain hot temperatures across inland areas through Monday.
Moist and unstable environment for periods of showers and thunderstorms wrapping over the area around the low level convergence to continue the flood threat especially in SW FL.
This will allow highs to reach into the low and mid 80s this afternoon. A few showers or a storm could spark in the higher terrain of the Appalachian foothills, but this activity should stay just east of our counties. A closed upper low begins to drop out of the upper Midwest tonight and tomorrow, bringing a return of shower and storm chances, especially by tomorrow afternoon. Overall lows will be nearly 10 degrees warmer than previous nights as sky cover increases and radiational cooling potential decreases. Will carry scattered shower and storm mention by Monday afternoon as deeper moisture pools ahead of the upper low centered near southern Lake Michigan.
248 AM CDT Sun Aug 27 2017 A sprawling ridge of high pressure extending from Quebec southwestward into the lower Mississippi River Valley will gradually lose its influence over the weather across central Illinois today as a weak cold front approaches from the northwest. Airmass will continue to moisten tonight as the cold front pushes into Illinois.
A cold front is expected to move into northwest and north-central sections this afternoon, with isolated thunderstorms developing along and ahead of it. Cooler conditions expected area-wide on Monday, owing to morning clouds and northeast winds.
Meanwhile, an upper level ridge that covers most of the western US will expand into Montana today. The upper ridge continues to build over the forecast area tonight and Monday with an upper level high centered over Utah. Surrounding this are several troughs.
Strong ridge aloft will bring sunny, hot and dry conditions to the area for the next several days. Temperatures will be in the lower 90s this afternoon, climbing into the mid-upper 90s for Monday. ridge.
223 AM CDT Sun Aug 27 2017 An upper level trough is currently located across the north central U. The trough will spread south towards the area today, then will move through the area tonight into Monday. As the trough moves south an associated cold front will move through the area. Highs this afternoon should be able to top out in the lower to middle 80s as highs in the lower 80s are expected on Sunday. An upper level ridge will remain across the western CONUS through much of the week leaving the area in a northwest flow upper level pattern.
440 AM EDT Sun Aug 27 2017 High pressure over southeastern Canada will bring fair weather and a chilly northerly flow through the remainder of the weekend. The high will shift to New England on Monday with continued fair weather and slightly warmer air. High pressure in control of the weather and today will be very similar to yesterday. High pressure slowly builds east and weak warm advection occurs.
To the north of the area, a near-stationary cold front resides across central Nebraska and will eventually move towards the area overnight tonight. Temperatures on Sunday are anticipated to be a few degrees cooler due to cloud cover and shower activity.
138 AM EDT Sun Aug 27 2017 High pressure over southeastern Canada will bring fair weather and a chilly northerly flow through the remainder of the weekend. The high will shift to New England on Monday with continued fair weather and slightly warmer air. Very quiet short term period as high pressure is in control across the Northeast. High pressure will continue to build east the next few days. temperatures will start to moderate to near normal as we get into warmer air. Highs generally in the lower to mid 70s Sunday and Monday.
Weak trough to near zonal flow will allow for anther copy/paste forecast with temperatures expected to be similar to what we saw in the past 24 hours.
1206 AM CDT Sun Aug 27 2017 High pressure will settle in from the north across most of the CWA tonight. A dominant upper ridge will remain over the Rockies through midweek, with a weak trough across the Great Lakes/New England.
538 AM CDT Sun Aug 27 2017 A sprawling ridge of high pressure extending from Quebec southwestward into the lower Mississippi River Valley will gradually lose its influence over the weather across central Illinois today as a weak cold front approaches from the northwest. Airmass will continue to moisten tonight as the cold front pushes into Illinois.
656 AM EDT Sun Aug 27 2017 Aviation A weak area of low pressure over Minnesota will track slowly southeast today and into the Great Lakes Region for Monday.
635 AM EDT Sun Aug 27 2017 Canadian high pressure will remain in charge through Monday providing dry weather and below normal temperatures. High pressure remains in control today. Highs maybe a touch warmer than yesterday in low-mid 70s. High pressure slides more over New England, but maintains a ridge axis through CNY and NEPA.
A few sunny breaks today allowed temperatures in some southern spots to hit in the low 90s.
Warm temperatures and dry air continue today and tomorrow resulting from a high pressure ridge.
311 AM CDT Sun Aug 27 2017 Temperatures will continue to be a few degrees below normal Today with the area between a cold front approaching from the north and Harvey to the south.
Regardless of the path that Harvey takes we will be dry through most of the week as an upper high stays centered over the 4 Corners region placing the FA under northerly flow aloft.
Later tonight into early Monday morning, a weak cold front will move across Kansas into the Texas Panhandle.
Otherwise, cold front will move through the area today, with breezy north to northeast winds by the early afternoon.
The main wx features this morning include a departing high pressure system centered over Quebec, and Tropical Storm Harvey, nearly stationary by Victoria, Texas. Models continue to depict a weak inverted trough developing over our southeast counties, possibly giving just enough lift for a few isolated showers or thunderstorms this afternoon.
320 AM MDT Sun Aug 27 2017 Strong upper ridging has set up across the western CONUS with quiet northwest flow aloft over the northern Great Plains. Dry weather is expected today and will continue through the first half of this week as the western CONUS ridge moves very little.
At the sfc, large scale high pressure and dry air was poised just to our east, with weakish DPVA and low to mid level WAA ahead of low pressure at the MN/WI border bringing in deeper moisture in the mid and upper levels.
If so, this would likely push the effective surface cold front further south into southern Kansas at late afternoon peak heating. The cold pool mesoscale outflow should result in pushing the effective front somewhere along or just south of the highway 50 corridor in the late afternoon. A slightly faster progression of the effective cold front will also require a subtle tweak down in high temperatures today along the I-70 corridor. Subtle cooling and noticeably drier air will advect south behind the front for Monday as a closed upper low settles south from Wisconsin into northern Illinois.
Previous forecast remains on track with lows in the low to mid 70s. The weak area of low pressure currently located over the Florida Peninsula will move off to the northeast tonight through Monday, yielding drier conditions across the tri-state region as a result. As a result, afternoon highs will remain in the upper 80s to low 90s, with overnight lows in the low 70s.
Strong high pressure aloft will remain across the Great Basin through the first part of the week.
637 AM EDT Sun Aug 27 2017 High pressure over southeastern Canada will bring fair weather and a chilly northerly flow through the remainder of the weekend. The high will shift to New England on Monday with continued fair weather and slightly warmer air. High pressure in control of the weather and today will be very similar to yesterday. High pressure slowly builds east and weak warm advection occurs.
1140 PM MDT Sat Aug 26 2017 While Harvey continues to affect the Texas coast, we will continue to deal with high pressure. This high pressure will meander across the Great Basin through the next several days with little change from day to day. One of the reasons it's not moving is because of the high pressure over us which also won't be moving.
Otherwise, an upper level low along the U. Temperatures will be a little cooler tonight than in recent days, with lows in the lower to mid 50s.
Other isold to sctd thunderstorms were noted over the higher terrain, especially across the sw mtns.
Generally zonal and weak upper level flow across the area today, as Central Alabama is between Tropical Storm Harvey to the west and an amplifying trough over the Midwest. On Monday, an upper level low moves through the Great Lakes region as part of a larger scale trough pattern.
Thunderstorms will remain possible overnight where the severe threat will be shifting south in response possibly to the low level jet strengthening. Storms will spread east over night with conditions not as favorable as you move off the higher terrain.
Highs today will be in the lower and middle 80s, with a few readings in the upper 80s across the northern Big Country.
Locally, the main focus for today will be on a weak area of low pressure across the Florida peninsula. As it slowly lifts northeastward, some wrap-around moisture on the northwest side may yield a few showers and thunderstorms across the southeast half of the area today with the highest chances around Cross City.
Storms that developed over the western Dakotas last evening continued to develop/propagate southeast near the +10 C isotherm at 700 mb down the low level instability axis located to our west.
514 AM EDT Sun Aug 27 2017 The 09z water vapor loop and RAP analysis shows a broad mid-level trough and low building in from MN and western Ontario. Strong moisture transport and modest q-vector convergence and isentropic ascent ahead of the mid-level trough was supporting numerous showers across Upper Mi early this morning. The mid level low and trough will remain nearly stationary over the western cwa today as continued q-vect convergence and isentropic ascent ahead of it will support scattered to numerous showers across the fcst area.
High temperatures should range from the lower to middle 60s north to the upper 60s and lower 70s south. The surface and upper lows are expected to drift south into central WI overnight. Will carry the highest pops (Likely) in eastern WI, where weak WAA will continue. On Monday, an inverted surface trof will reside across the area, and should provide enough convergence to support scattered shower development.
A rather persistent upper air pattern is expected throughout much of this week as a mid/upper level high pressure remains centered across the Great Basin through about mid-week, then gradually pushes a bit further south into northern Arizona.
602 AM EDT Sun Aug 27 2017 High pressure over lake Ontario will move into New England today. This will allow an upper level low to drift across the Great Lakes during the early part of the work week. High pressure centered over Lake Ontario will drift in New England today allowing a warm front to lift over the area today. Clouds will thicken from the West today as a warm front lifts NE over the forecast area. Expect area to remain dry with temps a couple of degrees warmer than ydy. Models in good agreement with upper level low dropping out of Canada and moving across the Western Lakes on Monday. A weak inverted trough will rotate across the area at some point during the period.
Strong high pressure aloft over the Pacific Northwest will maintain dry and unseasonably warm weather through Monday.
304 AM CDT Sun Aug 27 2017 Upper level high over the western CONUS, and another ridge sitting over the eastern Canadian provinces. Deepening upper low dropping down the upper Mississippi valley between the two ridges. At the surface, low pressure centered over Lake Superior with attendant cold front draping across Iowa and into Nebraska. Thunderstorms developing over eastern Iowa this morning in area of elevated moisture convergence with the low level jet. The forecast area will be under the influence of an upper level low on Monday. Expect scattered showers and a few afternoon thunderstorms, with the highest coverage along and east of the Mississippi River. Temperatures will be held down in the 70s by clouds and cooler northerly flow, coolest across the north.
355 AM CDT Sun Aug 27 2017 Upper level trough/low over northern MN will drop southward through WI today and tonight and send a weak cold front southeastward through our area this afternoon and tonight. Scattered showers and storms will move into portions of northeast and central MO and west central IL later this morning and this afternoon ahead of the cold front, then shift southeastward into the St Louis metro area, southeast MO and southwest IL tonight.
Dry, pleasant late August weather will persist through tomorrow night across the lower Ohio Valley. High pressure centered over the Great Lakes will keep a light easterly to northeasterly flow over the region. Another repeat performance for Sunday with just a couple degrees added to highs, which should bring most areas into the low to mid 80s. Another dry night expected Sunday night with lows in the lower 60s.
634 AM EDT Sun Aug 27 2017 The forecast area will be between a frontal boundary off the southeast coast and high pressure ridging southward along the Appalachians today.
406 AM EDT Sun Aug 27 2017 Canadian high pressure will remain in charge through Monday providing dry weather and below normal temperatures. High pressure remains in control today. Highs maybe a touch warmer than yesterday in low-mid 70s. High pressure slides more over New England, but maintains a ridge axis through CNY and NEPA.
A building upper ridge will keep temperatures well above normal through Monday. Circulation around the ridge pulls monsoon moisture into far southeast Oregon today, supporting isolated shower and thunderstorm development over southern Harney and Malheur counties by evening. Coverage of shower and thunderstorm development extends to the north and east on Monday as the upper ridge axis slips further east. High temperatures will near 100F in the lower valleys to near 90 in mountain valleys on Monday.
A amplified upper level ridge is developing over the western U.
139 AM CDT Sun Aug 27 2017 Aloft: NW flow will become almost due N tonight as a ridge and large subtropical high lodges over the Wrn USA with a trof over the E. The tail end of this trof will cross the CWA today. Dry and quiet wx in NNW or NW flow as a ridge dominates over the Wrn USA with a trof in the E. Slightly cooler than normal temps Mon-Tue.
315 AM CDT Sun Aug 27 2017 An upper level low will slowly drift southeast across the arrowhead of MN region today. An upper high over UT area with a Canadian Rockies ridge will bring a quiet weather pattern to the CONUS northern tier the first half of the work week. Did pull the low POPs over the northern valley for Tue evening although their is a chance for some isold activity along intl border from Langdon to Roseau. Week will be much warmer and slightly above seasonal norms through the work week.
345 AM CDT Sun Aug 27 2017 An upper trough will pass to the northeast of Oklahoma this evening and overnight, but sufficiently close to bring a front into the state. As it drifts farther south early Monday, any support from the trough will be moving farther away to the northeast leaving the lingering front though the state Monday to give low rain chances.
333 AM EDT Sun Aug 27 2017 High pressure over lake Ontario will move into New England today. This will allow an upper level low to drift across the Great Lakes during the early part of the work week. High pressure centered over Lake Ontario will drift in New England today allowing a warm front to lift over the area today. Clouds will thicken from the West today as a warm front lifts NE over the forecast area. Expect area to remain dry with temps a couple of degrees warmer than ydy. Models in good agreement with upper level low dropping out of Canada and moving across the Western Lakes on Monday. A weak inverted trough will rotate across the area at some point during the period.
335 AM MDT Sun Aug 27 2017 An upper level high will remain centered over the Great Basin with mainly dry nnw flow aloft over nrn CO. There will probably be enough moisture for a few high based storms over the higher terrain this aftn otherwise it looks dry across the area.
434 AM EDT Sun Aug 27 2017 Once again a late afternoon and early evening outflow boundary pushed through our county warning area with measurable rainfall confined only to the western half of the Lower Keys.
342 AM CDT Sun Aug 27 2017 Convective complex over central Nebraska has developed just ahead of a cold front currently pushing into eastern Nebraska and northwest Iowa.
345 AM CDT Sun Aug 27 2017 WV imagery shows a strong upper ridge firmly anchored over NV/UT and covering all of the western CONUS.
616 AM EDT Sun Aug 27 2017 High pressure over southeastern Canada will bring fair weather and a chilly northerly flow through the remainder of the weekend. The high will shift to New England on Monday with continued fair weather and slightly warmer air. High pressure in control of the weather and today will be very similar to yesterday. High pressure slowly builds east and weak warm advection occurs.
112 AM EDT Sun Aug 27 2017 High pressure under northwest flow aloft will maintain seasonably cool weather into Monday.
Visibilites across the CWA continue to drop with the lowest visibilities so far being in the eastern half. The GOES- 16 Fog product has suggested pockets of fog existing across much of the CWA and is supported by visibilities starting to decrease in the Pierre/Mobridge areas. For today, high pressure ridge aloft builds in from the west resulting in sunny skies and no precipitation tonight or Monday morning. Lows will be in the low to mid 50s. The long wave pattern over the conus starts to buckle/amplify early in the period, with a stout western conus ridge developing aloft. However, toward the end of the work week, the strong ridge gets knocked down a bit by energy advancing across the northern Rockies, and into the plains.
Clouds will begin to filter back into the area near the end of the period when a cold front pushes in from the north. A weak cold front will enter the far northern zones later Sunday afternoon, then track southward through the Texas Panhandle Sunday night.
/issued 345 AM CDT Sun Aug 27 2017/ An upper trough will pass to the northeast of Oklahoma this evening and overnight, but sufficiently close to bring a front into the state. As it drifts farther south early Monday, any support from the trough will be moving farther away to the northeast leaving the lingering front though the state Monday to give low rain chances.
Sunday through Monday will be continued dry and hotter than normal thanks to a very strong ridge of high pressure parked over much of the west.
With little change in airmass highs this afternoon will again reach the 70s to lower 80s with lows tonight a bit cooler once winds become more northwesterly, falling into the 50s to lower 60s.
421 AM EDT Sun Aug 27 2017 High pressure under northwest flow aloft will maintain seasonably cool weather into Monday.
350 AM EDT Sun Aug 27 2017 The forecast area will be between a frontal boundary off the southeast coast and high pressure ridging southward along the Appalachians today.