Aikyam-Lab/Synoptic-Bench huggingface dataset:
Winds will be breezy Sunday ahead of a upper level trough with gusts 30 to 35 possible. Following the passage of a cold front on Sunday, temperatures are expected to stay within the 70s and low 80s through the early work week.
954 AM EDT Sat Sep 19 2020 A high pressure center moves from the Upper Great Lakes to southern Quebec and strengthens through this weekend. Simultaneously, the associated ridge affects our region. The forecast remains on track for today with a cool start and highs forecast to recover to the lower 60s. Closer to the lakeshore, temperatures are much milder in the lower 50s due to the water temp near 70. A refreshing Canadian airmass is moving over the region due to high pressure over the Great Lakes region.
1050 AM EDT Sat Sep 19 2020 Mean layer ridging centered between South Florida and the Bahamas will contribute to another quiet afternoon across the Florida Keys. 2" of PW and no distinct dry layers in the lower troposphere.
A low pressure system passing to the north today will result in breezy conditions across mainly northwest Arizona and far southeast Nevada. Showers and some thunderstorms are rumbling at this early hour from Ely north through northeast Nevada ahead of incoming trough over the Pacific NW and northwest Nevada. Incoming trough will continue to shift northeast today with precipitation shield expected to lift across northern Utah and the northern Rockies. Trough will continue to influence our winds today with the strongest belt expected across northwest Arizona with values tapering off west into Clark and eastern Lincoln Counties.
536 AM CDT Sat Sep 19 2020 Expect cool and dry weather in central Illinois over the weekend as high pressure dominates the weather pattern over the region. High pressure currently centered near Lake Huron will slowly drift eastward today and tonight, while a high pressure ridge aloft migrates eastward to a position roughly over the Mississippi Valley. Cool temperatures can be expected, with highs generally in the upper 60s again, and lows tonight in the lower 40s. High pressure will continue to migrate eastward and then southward through the eastern U. Highs should be in the lower to mid 70s Sunday then rise to near 80 degrees by midweek.
647 AM EDT Sat Sep 19 2020 Canadian high pressure will gradually pass across our region this weekend. High pressure centered will pass to our north today before becoming anchored over the St Lawrence valley tonight.
Cooler temperatures and lighter winds are expected for today, followed by some warming on Sunday. Winds across the region this morning have backed off for the most part with Sierra ridge winds still gusting in the 30-45 mph range. This should continue for the remainder of this morning before becoming light and variable by the early afternoon hours as the trough lifts towards the northeast.
330 AM PDT Sat Sep 19 2020 A cold frontal passage through the Pacific Northwest will allow for breezy conditions today.
Cool Canadian high pressure over the Great Lakes region has allowed temperatures to fall into the 40s locally. It will be cool again tonight with lows in the low to mid 40s. The quiet weather pattern will continue through this upcoming week with an upper ridge positioned from the Southwest U.
Highs are forecast to reach the lower to middle 70s. Skies will begin to clear tonight as the inverted low-level trough moves to the west. Upper level heights will also begin to increase as the trough aloft pushes to the east of the Appalachians Mountains and ridging builds in from the southwest. Additionally, high pressue in the low-levels becomes established across the Northeastern U.
638 AM EDT Sat Sep 19 2020 Today will be cool with frost expected this morning across much of the area, and then highs only in the low to mid 60s.
713 AM CDT Sat Sep 19 2020 High pressure centered over the great lakes will remain in control of the regions weather today and tonight.
As Beta moves west toward the central Texas coast, it will begin to slow down as the high retreats to the north and east.
Early morning water vapor imagery/RUC analysis showed the circulation around Topical Storm Beta over the west central Gulf of Mexico and a weakening upper level trough whose axis was just to the west of our CWA stretching back to the southwest across east Texas. Despite our dry airmass and northeasterly low level flow, overrunning moisture from TS Beta and the upper level trough were resulting in light rain falling over our southeast most zones. The upper level trough is expected to weaken through tonight as mid level ridging strengthens across our region from the west. Overall, cooler than normal temperatures and dry weather will continue through tonight for most of our CWA but the chance of light rain will continue into this evening for our southeast.
The upper ridge over the western Plains/eastern Rockies is going to begin to start picking up its pace moving eastward. Areas farther south in Kentucky will become slightly warmer as they reach into the low 70s. Tonight, the axis of the upper ridge makes it to the Upper Mississippi River Valley. This movement will reinforce upper high pressure into the region. An upper ridge will amplify over the region on Sunday as it builds in from the west. Overall, expect a sunny end to the weekend with highs in the low to mid 70s. High pressure lingering over the region will keep the weather dry through midweek.
334 AM MDT Sat Sep 19 2020 The well advertised pattern change has arrived in eastern Idaho with much needed precip, albeit not much, and cooler temperatures which will stick around for a few days at least. Afternoon highs will be noticeably cooler with highs mainly in the 60s with a few lower 70s possible in spots. This system departs quickly and skies look to clear nicely on Sunday setting up a rather pleasant day to end the weekend as a flat upper- level ridge sets in.
428 AM MDT Sat Sep 19 2020 An upper level trough will move across the nrn Rockies today thru tonight. At the sfc, a lee trough will be in place along the front range, with gusty south winds, over the far ern plains. Thus, any shower activity this aftn, will be high based with mainly virga and gusty winds, over the higher terrain and possibly along the front range.
As an upper level trough moves closer to the Northern Rockies, a thunderstorm or two cannot be ruled out, though these will be widely scattered.
303 AM MDT Sat Sep 19 2020 Southern ridge continues to get pushed over by the approaching trough this morning. With central WY still reaching the mid 80s ahead of the front, humidity levels will be able to fall to around 15 percent long enough to warrant a Red Flag Warning for the lower elevations of Johnson and Natrona Counties. Sunday the zonal flow behind the trough will set up, keeping weather tranquil and quickly clearing skies, with highs in the 60s nd 70s.
07Z water vapor imagery shows 500mb ridging remaining over most of the western half of the US, with the exception of a more amplified trough on the west coast. For the rest of today, the lee trough is progged to deepen this afternoon and interact with high pressure that has been pushing east, which will tighten the pressure gradient across the state. As a result, winds increase into the daytime hours and become more southerly, ushering slightly warmer air into the area. Overnight lows range from the low 50s in the east to upper 50s in the western CWA. Temperatures warm a couple degrees more into Sunday as southerly winds continue to be breezy and bring warmer air to the surface up to 850mb.
Meanwhile, an upper ridge axis over the the High Plains will track east to the eastern Great Lakes through Sunday night. wildfires trapped under the aforementioned ridge will shift back into the area during the day Sunday.
A negatively tilted upper level trough, currently over the Pacific Northwest, will advance into Montana and Wyoming this afternoon. The upper trough will advance east and northeast tonight and Sunday. Moisture is very limited in the lower levels and continue to keep a dry forecast tonight through Sunday across the area. A broad upper level ridge will extend across the U.
/Issued 250 AM CDT Sat Sep 19 2020/ Another pleasantly cool night is underway, with surface ridging conditions and temperatures running generally in the 50s.
The region will remain caught in a tight pressure gradient between high pressure over New England and low pressure over Saskatchewan on Sunday, setting up a breezy day.
Deeper impulse/trough will advect into the region today, with a lee side trough pushing east. Ahead of the trough breezy southerly flow can be expected as a warm front slowly shifts north. NW SD may struggle to reach the lower 80s given easterly flow, residual high level smoke, and increasing clouds. Hence, have kept temps cooler there, with the warmest areas expected to be across SW to scentral SD where cloud cover will be the thinnest. Otherwise, mean NE PAC upper trough will support semi-unsettled near zonal flow across the NW-ncentral CONUS. However, given a lack of LL/GOMEX moisture per blocking from the progged tropical system, retained a dry forecast in the period. A weak cold front will cross the area late today and tonight, bringing isolated showers and thunderstorms and a wind shift to the west and northwest.
252 PM CDT Sat Sep 19 2020 Continued quiet and cooler in the short term with ridging remaining overhead. An upper trough will move through midweek with rain chances dependent on how much moisture makes it into the area from remnants of TS Beta.
Beta now moving northwest and movement is expected to become more westerly as the mid level ridge stays over the southern plains.
412 PM EDT Sat Sep 19 2020 Dry and cool conditions will prevail throughout the week under high pressure. A Frost Advisory remains in effect for areas north of Pittsburgh and for the ridge zones where temperature in the low and mid 30s are anticipated.
Temperatures are hovering in the low to mid 70s across much of the area, except for areas near the TN River, where Corinth is sitting at a chilly 68 degrees. This will offset the outgoing longwave radiation, keeping temperatures a bit warmer overnight. Nonetheless, expect lows to dip down into the lower 50s under clear skies, with upper 50s to lower 60s beneath the cirrus deck.
Have left the forecast dry because there is little moisture in the lower levels and so any precipitation will be from mid level clouds and going through a dry layer at the surface and at best there may be a few sprinkles.
Lows tonight will be mainly in the lower to middle 40s.
321 PM EDT Sat Sep 19 2020 A trough is in place across the area with TS Beta over the NW Gulf and Hurricane Teddy moving into the western Atlantic. As Beta slowly moves over the NW Gulf region and Teddy lifts NW and N, high pressure to the north of Florida will build down over the state and all of these factors will cause the pressure gradient over the area to tighten.
Upper level ridging currently over the region will exit the area tonight as a trough approaches. This trough will swing across the area on Sunday, with a more zonal pattern setting up Sunday night. At the surface, breezy conditions will continue across the eastern part of the CWA tonight into the day Sunday as a decent pressure gradient remains between an exiting high pressure system and an approaching low/frontal boundary and a 40-50 knot low level jet develops.
Temperatures are in the lower 90s with dewpoints in the upper 70s. The KBYX radar is nearly echo free, aside from a few showers waxing and waning in the lee of the Lower Keys.
Most areas are trending warmer today over the interior with a weak northerly flow.
Aloft, troughing over the Great Lakes, New England, and Mid Atlantic region at the start of the period will drift east, and ridging will build east over our area through Sunday night.
255 PM CDT Sat Sep 19 2020 An area of high pressure both at the surface and aloft remained common over the Southern Plains this afternoon. surface winds are forecast to be more east to southeast underneath high pressure which may aid in high temps in the mid 70s to low 80s. The area of high pressure over the region continues to keep Tropical Storm Beta on a slow west northwest movement toward the mid Texas Coast.
An amplified pattern with troughing over the Northeast and Mid-Atlantic allows for high pressure to work in and stay with us through at least midweek.
A trough to the east is retreating towards the northeast, while a ridge over the Plains will migrate into the area for Sunday.
257 PM MDT Sat Sep 19 2020 The upper level trough and surface cold front remain on track this afternoon as do the gusty winds ahead of the front. By daybreak Sunday, the front will have scooted well eastward while the H5 trough will be just moving over the Continental Divide.
19z WV satellite reveals an upper trough over ID, tropical storm Beta in the western gulf, and ridging over the OK south- southwestward to the Pacific with zonal flow aloft over the northern Panhandles as a result. For tonight through tomorrow night, expect zonal flow aloft to continue as the upper trough translates eastward over the northern Plains and the upper ridge remains in place.
1008 AM CDT Sat Sep 19 2020 Expect cool and dry weather in central Illinois over the weekend as high pressure dominates the weather pattern over the region. High pressure continues to dominate central and southeast Illinois this morning. High pressure currently centered near Lake Huron will slowly drift eastward today and tonight, while a high pressure ridge aloft migrates eastward to a position roughly over the Mississippi Valley. Cool temperatures can be expected, with highs generally in the upper 60s again, and lows tonight in the lower 40s. High pressure will continue to migrate eastward and then southward through the eastern U. Highs should be in the lower to mid 70s Sunday then rise to near 80 degrees by midweek.
155 PM EDT Sat Sep 19 2020 A high pressure center moves from the Upper Great Lakes to southern Quebec and strengthens through this weekend. Simultaneously, the associated ridge affects our region. Closer to the lakeshore, temperatures are much milder in the lower 50s due to the water temp near 70. A refreshing Canadian airmass is moving over the region due to high pressure over the Great Lakes region.
144 PM EDT Sat Sep 19 2020 Dry and cool conditions will prevail throughout the week under high pressure. High pressure over eastern New York will keep the region cool and dry throughout the evening and overnight. Temperatures are expected to fall below or near 36 degrees in the ridges and counties along I-80.
Hooley The upper ridge has begun to break down at southwest flow aloft has started its voyage over the mountains and into the area, bringing with it a cold front that will that will cross this afternoon. Elsewhere in the lower elevations, showers will be spotty and light. Low dewpoints will move into areas east and northeast of the Bighorn Mountains and help to dry things out with humidities dropping into the lower teens and maybe upper single digits. We will also see a dip in temperatures dropping to the low to mid 70s. Vertz Zonal flow with occasional weak ridging will prevail through the week ahead. Chambers A cold front will cross the area, accompanied by a gusty WNW surface wind shift late this morning through this evening.
Water vapor satellite imagery shows the center of the upper level low crossing northeast OR this morning, while some showers linger over Wallowa county and over the WA Cascades. Today, upper level low will exit the forecast area while a chance of showers linger over Wallowa county and the WA Cascade crests this afternoon.
1139 AM MDT Sat Sep 19 2020 Southern ridge continues to get pushed over by the approaching trough this morning. With central WY still reaching the mid 80s ahead of the front, humidity levels will be able to fall to around 15 percent long enough to warrant a Red Flag Warning for the lower elevations of Johnson and Natrona Counties. Sunday the zonal flow behind the trough will set up, keeping weather tranquil and quickly clearing skies, with highs in the 60s nd 70s.
1211 PM CDT Sat Sep 19 2020 The cooler pattern continues into Saturday morning with low temperatures across the area in the upper 40s to lower 50s.
217 PM CDT Sat Sep 19 2020 High pressure will continue to slide east through the period, with the pressure gradient increasing late tonight and Sunday. The large scale pattern will evolve from a serpentine zonal flow to a modest central CONUS ridge by midweek, with more uncertainty by the end of the week as an upper trough works toward the west coast and a stronger Pacific jet tries to push into the coast.
319 PM CDT Sat Sep 19 2020 (Issued 319 PM CDT Sat Sep 19 2020) Tonight and Sunday: High pressure over the Great Lakes Region will continue to drift eastward tonight. While southern Wisconsin is still under the influence of the high pressure, conditions are expected to remain dry and quiet. However as the high pressure shifts east, there is a large area of smoke just to the west of Wisconsin that is expected to shift eastward as well. Despite the filtered sunlight, temperatures are expected to be slightly warmer than today as southerly flow develops on the back side of the departing high. Low pressure in Saskatchewan moving toward Hudson bay and high pressure over the New England States will cause the southerly flow to persist through the beginning of the week. Bringing warmer temperatures and dry conditions to southern Wisconsin.
As both features and the associated surface cold front move towards the forecast area, the chance of showers and a few isolated thunderstorms begins late this evening in western North Dakota, expanding east through the night. High-res models want to then bring some wrap around showers and possibly a few thunderstorms in the west and north central Sunday morning and afternoon as the center of the low moves over.
222 PM CDT Sat Sep 19 2020 The relatively benign pattern continues for the area with seasonal temperatures in the lower 70s for highs and 50s for lows. Winds have shifted to the southeast today and increased slightly as the mid and upper level ridge builds into the area allowing a southerly flow to develop in the low levels.
227 PM CDT Sat Sep 19 2020 The nearly stagnant shear zone/trof axis at 5h will remain in place well to our south from SC through LA to T. The weak inverted trof at the surface into the lower levels of the atmosphere was situated from east TN through northwest AL south through MS. The lower and mid level clouds associated with this trof and corresponding isentropic ascent will tend to thin out later tonight. T Tongiht's Ridging aloft will build east from the southern Plains behind the overnight trof passage. This as surface ridging/wedging builds southwest through the lee of the Appalachians and into AL.
While there is not much QG ascent over our forecast area at the moment, a dry intrusion currently over the UT/CO border may provide better lift tonight to create showers and possible weak thunderstorms over the higher terrain. In the meantime, good lapse rates over the higher terrain have lead to isolated showers developing this afternoon. The trough will move northeast of our forecast area during the day tomorrow with slight subsidence over Colorado.
Latest surface analysis places the center of high pressure at 1032dm near Toronto as satellite shows cirrus from TS Beta streaming over over SE KY. Clear skies overnight will see temperatures drop into the low to mid 40s across southern Indiana and the Bluegrass and into the mid 40s to low 50s across south central KY before warming into the low to mid 70s under sunny skies again Sunday. In the medium range, a quiet and tranquil weather pattern is expected as mid-level ridging slowly builds across the region. Lows Sunday night will probably drop back into the low-mid 40s over the Bluegrass region with mainly upper 40s across the rest of the CWA.
Dewpoints cooperating as well with drier air at the surface working its way in from the Carolinas and lower 50s values entering the state ending the low clouds across the area. A cool night in store for tonight with upper 40s making an appearance over portions of NE GA if the high clouds begin to clear as expected. Went with the consensus guidance which keeps us in the low to mid 80s except the NW zones outside the wedge where upper 70s will be realized. Some locations over the NE mountains may not get out of the low 60s. Deese Between Hurricane Teddy in the Atlantic and Tropical Storm Beta in the Gulf, high pressure remains locked in place bringing clear skies and temperatures below seasonal normal as we kick of the week.
with fewer clouds expected as today's upper level moisture moves to our east due to upper level high pressure building in from the west.
Northwest upper flow over the region will switch to westerly and southwesterly as ridge builds to our south. Warmer temperatures start tomorrow and continues through the work week with highs in the 80s.
1029 AM PDT Sat Sep 19 2020 The cold front associated with incoming pressure system is currently pushing the region and helping to clear the smoke out with winds and rain.
high pressure will begin to build north out of New Mexico, while the upper trough moves into the Upper Midwest. Hazy skies should continue overnight, but improve on Sunday as the building ridge to the south forces upper level smoke to the north.
Deeper impulse/trough will advect into the region today, with a lee side trough pushing east. Ahead of the trough breezy southerly flow can be expected as a warm front slowly shifts north. NW SD may struggle to reach the lower 80s given easterly flow, residual high level smoke, and increasing clouds. Hence, have kept temps cooler there, with the warmest areas expected to be across SW to scentral SD where cloud cover will be the thinnest. Otherwise, mean NE PAC upper trough will support semi-unsettled near zonal flow across the NW-ncentral CONUS. However, given a lack of LL/GOMEX moisture per blocking from the progged tropical system, retained a dry forecast in the period. A cold front will cross the area late today and tonight, bringing isolated showers and thunderstorms and a wind shift to the west and northwest.
Low temperatures have been cooler than NBM has suggested in the mornings and will stick with lower guidance through Mon AM.
222 PM CDT Sat Sep 19 2020 Beautiful Fall-like weather conditions are occurring outside this afternoon, with temperatures in the 60s and dewpoints in the lower 40s. Quiet and dry conditions are expected this evening and through Sunday, as the upper level ridge slowly drifts east over the Plains and the Midwest. Overnight lows will be slightly warmer compared to this morning, with readings in the low to mid 40s. Highs will reach the lower 70s by the afternoon, a few degrees warmer than today.
235 PM CDT Sat Sep 19 2020 High pressure will continue to ridge southwestward into the Midwest through the first part of the week.
353 PM EDT Sat Sep 19 2020 One more cool night is in store as the strong Canadian high pressure system remains the dominate influence over the region while becoming recentered to the east over southern Ontario/Quebec. Afternoon dewpoints mixed out into the low 30s showing the potential for another cool night as clear skies help temps drop rapidly early tonight. Dewpoints remain a bit higher to the south and with winds veering to more southeasterly we could slightly warmer temps across the south. Warmer weather is on the horizon as models show an amplifying upper level ridge drifting over the Great Lakes Sunday, and holding over the region into the mid week period.
/issued 334 AM MDT Sat Sep 19 2020/ The well advertised pattern change has arrived in eastern Idaho with much needed precip, albeit not much, and cooler temperatures which will stick around for a few days at least. Afternoon highs will be noticeably cooler with highs mainly in the 60s with a few lower 70s possible in spots. This system departs quickly and skies look to clear nicely on Sunday setting up a rather pleasant day to end the weekend as a flat upper- level ridge sets in.