Aikyam-Lab/Synoptic-Bench huggingface dataset:
629 PM CDT Wed Aug 23 2017 H5 analysis this morning had closed low pressure over Quebec with a trough of low pressure extending south into the central Appalachian Mountains. High pressure was south of the trough over the western Atlantic, off the coast of northern Florida. High pressure extended west to northern Mexico, where a secondary high pressure was located south of Arizona. A ridge extended north of this feature into the northern Rockies and into northern Alberta. At the surface, high pressure was located over southeastern Nebraska near Falls City. Further west, a more favorable set up for convective development appears along the Cheyenne ridge of se Wyoming and am expecting convective development there. As this activity moves east it is expected to dissipate as the low level jet is anchored well east of the panhandle.
A cold front will accelerate down Lake MI late tonight and Thu AM with winds becoming nely and gusting to 20 kts from around 3-4 am near Sheboygan to Milwaukee around 7-8 am and Kenosha around 10-11 am. Cyclonic flow and low level thermal trough in place for much of Thursday so after any lingering mid clouds move off should see some more in the way of CU formation.
801 PM EDT Wed Aug 23 2017 Primarily fair weather will continue through the weekend as high pressure dominates the region. dry Canadian airmass will continue to build into the region as lows tonight will drop down into the lower 50s while added cloud cover will limit highs to upper 60s to around 70 in NW CWA and lower 70s elsewhere on Thursday.
High pressure will then reassert itself for the rest of the day, with a drier airmass than the one currently present over the area.
The second is frost potential over the interior W tonight as temps fall into the low to mid 30s. The ridge moves into the upper Great Lakes Fri night into Sat. In the extended, troughing remains over the area through this forecast period as the ECMWF and GFS show.
636 PM CDT Wed Aug 23 2017 Canadian high pressure was building southward into the region this afternoon. This high will settle over central Missouri tonight and then slowly push eastward Thursday.
1033 PM EDT Wed Aug 23 2017 Currently - A low level trough remains across Florida and the Keys this evening. Short Term Update - The trough will linger across the area, keeping a moist and unstable tropical airmass. A low level trough across Florida and the Keys will keep winds light.
927 PM EDT Wed Aug 23 2017 A reinforcing cold front is expected to generate some showers on Thursday. Weekend weather will feature cool and dry conditions with high pressure. A broad upper trough in the ern CONUS will dominate the wx pattern through much of the remaining forecast as an upper ridge amplifies in the central CONUS. The Ohio Valley will lie between this ridge and the persistent upper trough on the east coast.
The second is frost potential over the interior W tonight as temps fall into the low to mid 30s. The ridge moves into the upper Great Lakes Fri night into Sat. In the extended, troughing remains over the area through this forecast period as the ECMWF and GFS show. VFR conditions will prevail over the next 24 hours with light winds as high pressure anchors over the region.
332 PM EDT Wed Oct 11 2017 A few lingering showers tonight and Thursday and cooler.
This boundary will push east of the MO River by around 18Z, keeping the northwest corner of the forecast are in the low to mid 60s for highs Thursday. Breezy conditions will again be the theme, out of the south well ahead of the cold front, and out of the northwest behind the boundary. Relative humidity values west of the Missouri River will fall into the low to mid 30 percent range behind the cold front.
632 PM EDT Wed Oct 11 2017 An approaching weak cold front will move into the forecast area Thursday, stall and dissipate because of upper ridging. The ridge will dominate over the weekend.
Temperatures in and near the forecast area ranged from 46 at Pine Ridge, to 29 at Broken Bow and Ord. Upper flow will become southwesterly today, as an upper trough digs across the Pacific Northwest. As the upper trough advances across Idaho and Montana, a cold front will push east into the western Dakotas and northeast Wyoming toward daybreak. An H5 trough digs southeast across the Rockies late week and progresses east onto the Plains over the weekend.
137 PM EDT Wed Oct 11 2017 Cold front moves in later today.
307 PM EDT Wed Oct 11 2017 High pressure will build from Canada through tonight and crest over the area Thursday into Thursday night.
/Issued 735 AM EDT Wed Oct 11 2017/ High pressure.
234 PM EDT Wed Oct 11 2017 Crossing low pressure will bring occasional showers to the area through tonight. Light rain chances will continue Thursday before the low dissipates.
/issued 955 AM CDT Wed Oct 11 2017/ Water vapor imagery shows a ridge of high pressure expanding westward from the southeast portion of the US this morning, as a trough of low pressure lifts across the Great Lakes. This ridge will be our dominating weather feature over the next several days, with dry conditions prevailing.
Upper air analysis this morning showed a ridge over the southeastern US with southwesterly flow across Texas. At the surface, high pressure was centered over eastern Oklahoma and winds across our CWA were light and from the northeast. The upper level ridge will retrograde back over Texas during this period.
/issued 343 AM CDT Wed Oct 11 2017/ Ridging will continue as the upper level high over the Gulf coast builds back to the west. Upper level flow will back over the next few days bringing warmer air to the area.
The weather looks dry and seasonable for Thursday, with high pressure building to the north of the area. The pattern gets more complicated heading into the weekend, as a wedge ridge sets up in the lee of the Appalachians.
Warmer temps aloft spread across the area as well, which will allow temps to climb into the 60s and 70s across the CWA. The cold front eventually moves through on Thursday, but we will still see a mild southerly flow ahead of the front.
Continued Dry and Warmer. High pressure will dominate West Central Texas tonight and tomorrow. Lows tonight will be slightly warmer than lows this morning, with some clouds moving over West Central Texas late tonight. This low-level pattern shift will help create afternoon highs tomorrow in the 80 to 85 range.
A seasonable upper pattern is in place across North America, with a trough near the West Coast and downstream ridging mid-continent. The flow will amplify a bit more the next couple days, then flatten by late in the weekend as a significant short wave ejects out of the western trough. The main chance for precipitation will occur during the weekend as the energy ejecting out of the western trough generates a significant cyclone in the mid-section of the country. Tonight and Thursday The low clouds from last night that shifted into mainly the southern portion of the forecast area today are likely to expand back north again overnight as boundary layer flow turns southeast.
A short wave trough moving into southern Oregon along NW flow is generating isolated to scattered showers across the area. South of the Umpqua divide, sky is expected to clear later and temperatures are expected to fall into the lower 30s. Widespread frost is expected in the Rogue Valley and in the lower Klamath River Valley. On Thursday another strong short wave trough will bring re- inforcing cold air to the area. The higher peaks between Willamette Pass and Diamond Lake could see around a foot of snow Thursday night.
A storm system moving through the Pacific Northwest will bring cooler temperatures to Utah beginning tonight and continuing through the upcoming weekend.
142 PM CDT Wed Oct 11 2017 Broad east-west upper level Anticyclone continued to stretch westward from the deep south into southeast Texas.
Aloft, the region is under southwesterly flow, set up between a ridge axis departing to our east and a trough digging into the Pac NW. At the surface, the main ridge axis continues to slide east of the area, with southerly winds picking up on the backside. Models are in good agreement showing the southwesterly flow aloft continuing, as that trough remains over the west coast. At the surface, not expecting a lot of change tonight/tomorrow, with southerly winds across the CWA as an area low pressure develops over eastern CO.
200 PM PDT Wed Oct 11 2017 A low pressure trough moving through California will bring cooler weather today and Thursday with increasing onshore flow.
206 PM EDT Wed Oct 11 2017 Low pressure will track east through northern Ohio today and stall in northeast Ohio and western Pennsylvania tonight.
Ridge axis will shift off to the east today, allowing for an increasing southerly flow, especially in our western areas where some afternoon gusts to around 30 mph are possible. The southerly flow will bring warmer low level air into the region, with highs from the upper 50s east to mid-upper 60s west of the James Valley. Nudged the blended forecast a few degrees warmer.
The cold front is continuing to moving across the area. Models for the most part are mixing out the low level stratus deck later this afternoon, but they may be doing it a little quicker than reality. Cold front is has passed through CKV, BNA, and MQY.
528 PM EDT Wed Oct 11 2017 Crossing low pressure will bring occasional showers to the area through tonight. Light rain chances will continue Thursday before the low dissipates. have increased PoPs and coverage for the early evening hours, as the expanding dry slot has allowed for a rapid destabilization of the lower atmosphere.
245 PM EDT Wed Oct 11 2017 A few lingering showers tonight and Thursday and cooler.
This will keep the low level moisture from the recent rainfall trapped below the inversion. Due to the low stratus, there won't be much of a diurnal spread in temperatures, with lows in the lower 50s. High pressure ridge will shift to our east with warm air advection kicking in (southerly winds), which should allow for the stratus to gradually erode.
148 PM EDT Wed Oct 11 2017 Aviation Low pressure will track south of Lower Michigan today with rain tapering off to showers by the afternoon.
After 8 to 9 AM this morning, temps will warm up quickly with abundant sunshine and rising mid-level heights as low pressure pushes northeast away from the area.
Much warmer air mass is now in place after a cold start. So look to have light winds near the trough line. So going by the wind field, low dewpoints, and better performing guidance, went near the cooler guidance.
Highs on Thursday will be near normal in the lower 60s.
A shift from onshore flow to northerly winds is occurring as a surface cold front passes through. A Red Flag Warning from 11 am through Thursday afternoon from the Valley and Delta, extending into the northern foothills tonight as northeast ridge and canyon winds develop.
1044 AM PDT Wed Oct 11 2017 Cooler and showery weather can be expected for much of the work week as an area of low pressure settles over the Inland Northwest.
413 PM EDT Wed Oct 11 2017 Atlantic high pressure will prevail into Thursday.
With low pressure and its associated cold front east of the area, high pressure is forecast to build into the region over the next 48 hours. This will result in mainly dry conditions along with much cooler temperatures. With low level moisture trapped beneath a strong mid level inversion, the low stratus is likely to stick around across much of the region through tonight. It will take a shift in low level winds to the south on Thursday to finally scour out the low level grunge. Consequently, highs today will struggle to reach the lower 60s in many areas.
Skies will remain mostly clear tonight with dew points in the 50s and calm winds, bringing low temps tonight down into the low to mid 60s. Models agree that the upper level ridge which began to build into the area last night will remain centered over the Lower Miss Valley.
Areas still under the this low level stratus should remain in the 40s. Temperatures should warm into the low 60s today where the clouds clear and upper 50s where they don't.
Temperatures currently in the low to mid 50s with breezy WNW winds 10-16 mph and gusts 17-24 mph adding a fall chill to the air. Late morning surface map shows 1014 mb low pressure over nw Ohio with trof extending western over northern IN/IL, north of I-74 and south of I-80. with a trailing trough axis extending across north-central Illinois. Due to cloudy skies and a cool W/NW flow, temperatures will be considerably cooler than in recent days. with overnight readings remaining in the lower to middle 50s.
210 PM EDT Wed Oct 11 2017 An approaching weak cold front will move into the forecast area Thursday, stall and dissipate because of upper ridging. The ridge will dominate over the weekend.
108 PM EDT Wed Oct 11 2017 Crossing low pressure will bring occasional showers to the area through tonight. Light rain chances will continue Thursday before the low dissipates.
While southerly breezes will make it feel a bit cooler than it actually will be. Southwesterly flow aloft will be in place to start the extended periods as a trough of low pressure persists across the west coast with several embedded disturbances forecast to lift north of the local area. expect the main trough to shift east and emerge into the plains. bringing another cold front and chance for precipitation to the local area.
/ISSUED 1025 AM CDT Wed Oct 11 2017/ Not too many changes in this update, as we seem on track with the high temperatures today. Cloud cover will decrease tonight as high pressure builds in from the east. As the upper level ridge builds in from the west today, temperatures will begin to rise. If the upper level ridge follows recent guidance and progresses further south over lower Miss Valley, rain chances will stay south of the area.
Low pressure centered just south of Chicago will track east across northern Indiana as a cold front extending south from the low tracks east across rest of the area.
Deterministic GFS/NAM/ECMWF consistent with predicting an upper pattern characterized by an upper disturbance spreading across the NWRN CONUS/Rockies while an upper ridge persists over TX/SERN CONUS during the period.
Afternoon temperatures under the persistent cloud cover were only in the lower to middle 50s. Where cloud cover does diminish, temperatures will be able to climb to around 60 or into the lower 60s this afternoon. This however, is expected to combine with the low level and soil moisture left behind by the recent rainfall and allow for the development of fog overnight into early tomorrow morning.
Models show a Pacific cold front pushing into central Wyoming and stalling as it moves into eastern Wyoming Thursday morning with winds shifting into the northwest. High temperatures will be 10 to 15 degrees cooler compared to Wednesday, north of a line from Rawlins to Chadron Nebraska.
Otherwise, another muggy night for mid October with lows in the lower 70s.
This low combined with a high pressure ridge to the north will maintain a deep easterly flow that will advect in even drier air above the surface across ne Fl and coastal se Ga.
655 PM EDT Wed Oct 11 2017 An approaching weak cold front will move into the forecast area Thursday, stall and dissipate because of upper ridging. The ridge will dominate over the weekend.
An upper level trough will be over the region. Will see some clearing over the western portion of the forecast area overnight so expect some freezing temperatures and have issued a freeze warning. An upper level trough will lead to instability showers over much of the area including all TAF sites this afternoon and early evening.
Out ahead of the front, there will be a decent thermal ridge with 925mb temps in the mid teens C. The thermal ridge and good mixing along with plenty of sunshine should allow highs again to reach the 60s across most of the area.
453 PM MDT Wed Oct 11 2017 Broad upper trough covers the western CONUS, and cirrus clouds are streaming through southwest flow into the northern plains. At the surface, a trough stretches across the western Dakotas and eastern MT/WY. However, a cold front will begin crossing the area late tonight, and so western portions of the area will reach the 30s. The cold front will slowly move through the region on Thursday, creating gusty northwest winds across much of western SD. Temperatures will range from the 50s across the northwestern third of the CWA to the lower 70s across south central SD.
Broad swly flow aloft will continue across the area, with deepening lee trough over the plains. Cold front will drop into nrn CO Wed afternoon, though boundary will remain north of the Palmer Divide until evening and thus no impact on srn CO wx during the day.
Cold front was located just west of Bozeman at 3 pm this afternoon. Further east winds were fairly light underneath the broad surface trof. High cloud cover and light winds have kept temperatures just a bit cooler than forecast for early this afternoon, but expect a bump as the cold front moves into the area a bit later in the day/evening. So far precipitation has stayed well west of the divide today, though models anticipate foothills and mountains will see development around the time of the cold frontal passage. Tomorrow will be cooler with highs in the 50s and a west to northwest breeze will make it feel a bit colder than that.
216 PM EDT Wed Oct 11 2017 Low pressure will pass well south of New England tonight as high pressure continues to build over the region.
108 PM EDT Wed Oct 11 2017 Low pressure will move east from the Ohio Valley today to near the mid Atlantic coast by Thursday. Eventually, this high will suppress the low and associated rain to the south and push drier air into the region beginning tonight and continuing into Thursday. In the big picture, high pressure centered over eastern New England early in the period will move east with time allowing a SW flow to once again usher in unseasonably warm air by this weekend along with mainly dry conditions.
The lowest mesonet temperature was 33F at Buffalo. The focus will shift to deep trough moving onshore in the Pacific Northwest now.
318 PM MDT Wed Oct 11 2017 A west-southwest flow aloft will persist through Thursday as an upper level trough moves across the Pacific Northwest and into the Northern Rockies. This will usher warmer air into Colorado. Lows tonight should stay above freezing except over the higher terrain and mountain valleys. A weak cold front may sneak into far northeast Colorado late Thursday afternoon bringing slightly cooler air late in the day.
237 PM PDT Wed Oct 11 2017 Cooler and showery weather is expected for the rest of the work week.
Lee side troughing will continue to support a modest southerly flow across the high plains tonight, drawing warmer air northward into western Kansas. Look for lows only down into the 40s(F) to the possibly the lower 50s(F) late tonight. The prevailing lee side trough in eastern Colorado is projected to edge eastward toward the Kansas border Thursday resulting in more of a southwest downslope flow across the region. Considering short range models are showing H85 temperatures pushing up into the lower to mid 20s(C) by midday, expect widespread 80s(F) for highs Thursday afternoon.
Weak high pressure will bring warmer conditions today with highs in the low to mid 90s across the lower deserts. The synoptic pattern will keep a deep trough situated well to the north allowing dry southwesterly flow aloft to remain over the Desert Southwest through the weekend. A slight boost in temperatures will take place today over yesterday as a weak ridge axis exits to the east.
251 PM MST Wed Oct 11 2017 Weak high pressure will bring warmer conditions today with highs in the low to mid 90s across the lower deserts. An upper-level trough across the western CONUS will keep dry southwesterly flow in place over the region.
228 PM MDT Wed Oct 11 2017 Broad upper trough covers the western CONUS, and cirrus clouds are streaming through southwest flow into the northern plains. At the surface, a trough stretches across the western Dakotas and eastern MT/WY. However, a cold front will begin crossing the area late tonight, and so western portions of the area will reach the 30s. The cold front will slowly move through the region on Thursday, creating gusty northwest winds across much of western SD. Temperatures will range from the 50s across the northwestern third of the CWA to the lower 70s across south central SD.
The cold front is now along the Cumberland Plateau with westerly winds being reported in Crossville. The low level dewpoints and PW values are elevated for early October but the forcing is lacking. However, could still see a few isolated showers with best chances across the higher elevations. Overnight lows will still be slightly above normal but several degrees cooler than the last couple of nights in the 50s generally areawide.
316 PM CDT Wed Oct 11 2017 Warm air advection ahead of an energetic upper level trough located over the Western US was warming temperatures into the upper 60s over parts of western and central North Dakota this afternoon. Strong mixing ahead of the trough has also led to breezy conditions across the central part of the state and the James River Valley. A strong dry cold front will approach from Montana and sweep across the state early Thursday. Strong cold air advection behind the front will help lows in the west and north fall into the lower to upper 30s. Further east, lows will generally be in the low to mid 40s. Behind the quick moving cold front, breezy conditions will develop once again over much of western and central North Dakota through the afternoon hours on Thursday.
A Red Flag Warning continues through Thursday afternoon from the Valley and Delta, extending into the northern foothills tonight as northeast ridge and canyon winds develop. Temperatures are about 5 to 10 degrees cooler than yesterday.
Models show rain coverage increasing from east to west late tonight/towards daybreak as the upper level low moves further west.
1224 PM CDT Wed Oct 11 2017 18Z TAFS High pressure in place both at the surface and aloft in the wake of the cold front that pushed through the area yesterday will keep skies mostly clear and winds light out of the north through the period. /issued 1030 AM CDT Wed Oct 11 2017/ Mid-morning sfc analysis shows the cold front just about to depart the far sern zones as the Amerada Pass observation station now shows slightly elevated nrly winds. N winds 8-10 kts behind the departing cold front will continue through this afternoon, diminishing to 5 kts or less after 00z. Frontal passage will bring cooler temperatures but short-lived for today and tonight before increasing once again for the latter part of the week.
Out west, a deep longwave trof extended southward from British Columbia to just off the CA coastline.
146 PM PDT Wed Oct 11 2017 Coastal low clouds and slightly cooler temperatures will continue until Thursday.
Meanwhile, an upper level trough of low pressure is pushing ashore into the Pacific Northwest. Near the surface, a lee side trough of low pressure is strengthening across eastern Colorado. With the mixing, temperatures will hold in the mid 40s north to the lower 50s south Thursday morning.
126 PM EDT Wed Oct 11 2017 VFR conditions currently across the terminals with a cold front approaching from the west.
325 PM CDT Wed Oct 11 2017 Mid-afternoon sfc analysis shows the cold front extending from low pressure over the Midwest through the sern CONUS to the n-cntl Gulf off our coast. while high pressure is currently noted over the srn Plains. Water vapor imagery shows troffing aloft in place from nrn old Mexico across the Gulf Coast region to the wrn Atlantic. The ridging has kept cloudiness at bay with mainly just a little cu in the slightly moister sern zones noted in visible imagery. The forecast remains rain-free into the weekend as high pressure holds sfc/aloft initially.