Aikyam-Lab/Synoptic-Bench huggingface dataset:
Much of the cloud remains of the high cirrus variety with narrowing axis of deeper moisture aloft not pushing steadily northward. The lower tropospheric southerly winds and advection into a broad and weak deformation axis will then support an increase in shower activity again south of the area across Ohio. The very broad circulation associated with the remnants of Hurricane Irma is slowly tracking northward with the center of the low pressure crossing through the Tennessee Valley early this morning. The low pressure is set to track east by Thursday night as another upper ridge settles overhead. Surface pressure high pressure is forecast to reside over the eastern Great Lakes putting Michigan in light southerly surface winds for the weekend.
753 AM EDT Wed Sep 13 2017 Aviation Weakening low pressure, formally Irma, will approach from the south today and tonight and bring some cloudiness and perhaps a few showers to southern lower Michigan. Otherwise high pressure and above normal temperatures will dominate our weather through the coming weekend. Will maintain low chance pops today and tonight for a few showers south of a MKG to MOP line as guidance depicts a narrow band or two of mid level fgen related forcing pivoting nwwd around north side of approaching upper low. The upper low moves to near IND by 00Z tonight then heads ene from there, reaching PA on Thursday.
1037 AM EDT Wed Sep 13 2017 Low pressure over the Mississippi and Lower Ohio Valley left behind from Irma will slowly spin to the west of the forecast area and spread some light showers around it into western parts of the area with best rain chances Cumberland Plateau and southern valley and then moving farther north by late today. Temperatures now in the 50s to upper 60s should rise into the lower 60s mountains and plateau to as warm as mid 70s lower elevations in the northeast where the sun will be out longer.
Overall forcing and instability would suggest this won't happen tonight as upper low weakens and slides a bit to the south with main forcing and instability sinking slowly south of our forecast area. Rasch Upper low now just to the southwest of Monterey Bay. Thunderstorms have been firing early this morning around the low center just offshore, and across the northern San Joaquin Valley and Sierra to the northeast of the low. Current temperatures are running around 3-10 degrees cooler compared to 24 hours ago and range rom the mid 40s in the mountain valleys to the 60s to mid 70s in the Central Valley. The thunderstorm threat will continue from about the Sacramento region southward this morning as the upper low tracks onshore into central California. The low will shift east tonight as a trough moves into the Pacific Northwest.
A pressure ridge will be just off the Southeast Coast through Thursday. Ridging is forecast to extend through the forecast area over the weekend with Jose well off the coast. GOES16 total precipitable water plot shows a plume of enhanced moisture lifting up through the lower CSRA and eastern Midlands with values around 1.
951 AM CDT Wed Sep 13 2017 KLIX Sounding is more moist this morning, mainly due to mid and upper level moisture and clouds with a trough of low pressure that extends southwest from the remnant low pressure system associated with Irma over the lower Ohio Valley. /issued 338 AM CDT Wed Sep 13 2017/ Fall-like weather is expected again today thanks to the remnants of Irma, which is currently being stretched from SW to NE along the lower Mississippi Valley. Otherwise, stayed pretty close to MAV guidance for forecast highs today which should be in the low to mid 80s.
High pressure will continue to build in from the northeast setting up light winds and seas with winds less than 15 knots and seas 3 feet or less into Thursday.
914 AM EDT Wed Sep 13 2017 An occluded low pressure system will lift through the Tennessee and Ohio Valleys through today. Through the morning, surface ridging will slip into the western Atlantic and weaken the confluence zone. The 9 pm subjective surface analysis showed a quasi-stationary baroclinic trough across south GA and AL, extending westward to the LA coast. There was a confluence zone along a trough over the northwest FL coastal waters, separating west winds to its west from south winds to its east.
1046 AM EDT Wed Sep 13 2017 High pressure continues to dominate the weather over the North Country today with mainly dry and seasonably warm temperatures.
735 AM EDT Wed Sep 13 2017 High pressure continues to dominate the weather over the North Country today with mainly dry and seasonably warm temperatures.
We are experiencing our last above-normal temperature day for a while, as a strong trough and accompanying cold front are on the way for tomorrow. Northwest winds will develop tomorrow, with the main cold front moving through northwest to southeast from late morning to evening. A band of showers is tracking across the Lower Treasure Valley this morning. A pattern change is imminent, as a upper level trough moves south across British Columbia this afternoon and into the Pacific NW on Thursday. Expect one more warm day today, before a cold front lowers temperatures around 10-15 degrees on Thursday.
The very broad circulation associated with the remnants of Hurricane Irma is slowly tracking northward with the center of the low pressure crossing through the Tennessee Valley early this morning. The low pressure is set to track east by Thursday night as another upper ridge settles overhead. Surface pressure high pressure is forecast to reside over the eastern Great Lakes putting Michigan in light southerly surface winds for the weekend.
High temperatures will be 5-10 degrees cooler today than yesterday as cold air works into the area from the north. Mid level heights were falling across the northern Rockies as an upper trough moves into southern British Columbia. This will lead to high temperatures being 5-10 degrees cooler today compared to yesterday. Much cooler air will push into the area late tonight, and set the stage for a couple of chilly days to end the week. Models were consistent on developing convection over the higher terrain with this wave, and spreading ascent onto the plains. TWH Expecting rainfall to overspread the area Thursday as an open trough starts to work into western Montana.
1054 AM EDT Wed Sep 13 2017 A blocking upper ridge of high pressure keeps New England under a mostly clear sky with warm temperatures for the next few days. 7 am Update: Fog has formed in the CT River Valley otherwise clear skies elsewhere under the ridge of high pressure. Previous Discussion: The blocking surface and upper ridge of high pressure remains over the region so another mostly sunny and warm day. Some high clouds may spill through the ridge at times over southern areas. Tonight will be mostly clear but mid/high clouds well in advance of the remnants of IRMA over the midwest will spill through the upper ridge axis over the region later tonight.
827 AM EDT Wed Sep 13 2017 A blocking upper ridge of high pressure keeps New England under a mostly clear sky with warm temperatures for the next few days. 7 am Update: Fog has formed in the CT River Valley otherwise clear skies elsewhere under the ridge of high pressure. Previous Discussion: The blocking surface and upper ridge of high pressure remains over the region so another mostly sunny and warm day. Some high clouds may spill through the ridge at times over southern areas. Tonight will be mostly clear but mid/high clouds well in advance of the remnants of IRMA over the midwest will spill through the upper ridge axis over the region later tonight.
This cyclone continues to wrap a lot of dry air into its center and has the look of a decaying, occluded baroclinic low. Moisture continues to wrap around the core of this cyclone, with isentropic ascent noted just above the boundary layer. Low ceilings, relatively light winds, and patchy fog are present with temperatures as of 3 AM CDT in the lower 60s at most locations. Highs today are anticipated to moderate into the lower 70s west of the Mississippi River but remain in the middle 60s near the Tennessee River. Models indicate mid/upper level ridging will gradually build into the Lower Mississippi Valley for the remainder of the week into the weekend. CJC 12Z TAFs GOES IR and surface analysis showed the weak low level circulation of tropical cyclone Irma centered just north of MEM at 11Z.
915 AM EDT Wed Sep 13 2017 A weak high pressure ridge will be East of the region Today.
Irma contine to wrap moisture back down through much of the lower and middle MS Valley. UA ridging across the western CONUS will commence to shift eastward today, courtesy of an UA trough moving onshore across the Pacific northwest. With an UL ridge drawing near and clearing skies occurring today, both 500 mb height fields and 850 mb temps will be on the rise leading to temps in the 80s today, followed by seasonal avg temps by tomorrow /upper 80s to lower 90s/. Expect further warming by this weekend /lower 90s CWA-wide/, courtesy of the UA ridge moving almost overhead.
A pressure ridge will be just off the Southeast Coast through Thursday. Ridging is forecast to extend through the forecast area over the weekend with Jose well off the coast. GOES16 total precipitable water plot shows a plume of enhanced moisture lifting up through the lower CSRA and eastern Midlands with values around 1. Moisture here should remain limited with surface ridging just south and east.
1222 PM CDT Wed Mar 21 2018 Rather tranquil weather with a warming trend the next couple of days as an upper ridge builds over the Rockies and across the high Plains with increasing southerly low level flow for central/eastern Kansas. The going forecast/temperatures are on track, trending from the low to mid 60s today into the lower 70s on Thursday.
254 PM CDT Wed Mar 21 2018 (Tonight and Thursday) Dry and warm weather will persist across the area the next 24 hours, as southerly low level flow continues and an upper level ridge moves east into the Plains by tomorrow afternoon. Temperatures will be warmer tonight and on Thursday, with overnight lows around 50 degrees and highs Thursday afternoon in the upper 70s and lower 80s.
233 PM MDT Wed Mar 21 2018 Satellite imagery this afternoon reveals a large-scale trough digging southwards into the northeastern Pacific, while clouds and showers are tracking along the southwest flow over Pacific Northwest and Northern Rockies. Sunny breaks in the clouds have been hard to come by, which has resulted in a few places staying a little cooler than forecast today. There will be an increasing chance for showers by Thursday area- wide as a cold front begins to move out of Washington and Oregon.
/issued 1037 AM EDT Wed Mar 21 2018/ A breezy mostly sunny and clear day is on tap across the region as high pressure builds in. A few spots across southwest Florida may just get into the low 70s late this afternoon.
SHORT TERM (Tonight through Thursday Night): 500mb ridge across the western United States will amplify somewhat across the western half of the country through the short term. high pressure across the east-central U. Expect warmer temperatures Thurs afternoon than today as southeast winds increase across the CWA Thursday. Lows Thurs night will also be warmer than tonight as surface moisture continues to increase across the area.
153 PM EDT Wed Mar 21 2018 Low pressure is moving slowly east today allowing light snow to end.
An upper low off the B. coast will track southward and several embedded waves rotating around the low will enhance the precipitation east of the Cascades. An associated surface cold front will bring breezy to windy conditions Thursday afternoon.
313 PM CDT Wed Mar 21 2018 An upper trough is over the east coast and weak ridging is over the desert southwest.
337 PM EDT Wed Mar 21 2018 A potent upper level low continues to slowly pivot across the eastern CONUS. Strong northwesterly winds combined with some available moisture in the low/mid levels has helped to promote light snow showers across the higher elevations, especially on the westward slopes. No major impacts are anticipated given road temperatures are generally above freezing.
The combination of low pressure to the Northeast, and high pressure building to the West will provide an enhanced gradient across the region, resulting in gusty winds this afternoon. As the low pulls further to the Northeast the gradient will decrease allowing winds to diminish around sunset. Mainly clear skies will be expected through Thursday with high pressure building from the West.
356 PM CDT Wed Mar 21 2018 As of 20Z Wednesday afternoon the stagnant mid-level flow remains across the CONUS with troughing in the east and ridging in the west. At the surface a ridge axis was centered across eastern KS, yielding clear skies and light winds across the area. With the WAA and deep mixing up to H85 to H8 Thursday afternoon high temperatures will range from the upper 60s in northern and far eastern KS to the lower 70s in central KS.
The departing upper low will result in drying and stabilization aloft that will bring a diminishing trend to snow showers and measurable snow accumulations through the evening, but it may not be the end of precip. Temperatures tonight will easily drop below freezing for most areas, so the freeze warning for locations where our freeze program has been activated will continue. Dry northwest flow aloft with surface ridging continues on Thursday night.
the first time since late January! Building upper ridge bringing warmer temperatures today, and the warming trend will continue tomorrow. This could keep temps cooler tomorrow across our east. To the east of deepening surface trof, easterly winds will increase through the day tomorrow especially from Baker to Ekalaka. freezing rain) as precip develops in our east Thursday evening, but current indications suggest precip should stay rain with temps in the mid-upper 30s.
The rest of the week will feature cooler than average temperatures and occasional flurries. Heaviest snow (rates ~1 in/hr at times) should shift south/east with time into the lower Susquehanna Valley by early evening before tapering off from west to east into tonight. NBM/Superblend indicating max temps Thursday ranging from the low 30s over the highest terrain of the Alleghenies, to the low 40s in the Susq Valley.
158 PM EDT Wed Mar 21 2018 Strong upper trough will bring cooler and windy conditions today behind a cold front.
212 PM CDT Wed Mar 21 2018 Region remains wedged between the trof over the ern CONUS and upper ridge over the Intermountain West, which has left us under dry nwly flow aloft and high pressure at the sfc.
155 PM EDT Wed Mar 21 2018 WV imagery and RAP analysis indicated a weak mid/upper level nrn stream trough from Manitoba into the Upper MS valley and a downstream ridge through nw Ontario. At the surface, high pressure centered near James Bay dominated the region with dry ene low level flow. This will allow temps to drop toward the lower end of guidance with min readings in the low single digits west to the lower/mid teens along the Great Lakes. Quiet weather is expected to continue into the weekend under persistent high pressure. Building 5h heights and confluent flow ahead of an advancing mid- upper ridge from the west will yield more sunshine Thu and Fri as temps push back toward normal with highs in the lower to mid 30s north to lower 40s south.
317 PM MDT Wed Mar 21 2018 An upper level ridge continues to build over the northern Rockies this afternoon, as milder air moves into the region. Cooler air moves into the region for the weekend, with only a small chance for a passing rain or snow shower.
323 PM CDT Wed Mar 21 2018 High pressure moving into central and southeast Illinois tonight will give us a clear and unseasonably cold night.
Temperatures throughout northeast and north central Colorado will be 5 to 10 degrees warmer tonight and Thursday.
304 PM EDT Wed Mar 21 2018 Low pressure east of the Delmarva Peninsula will move northeast to a position near Cape Cod on Thursday morning.
106 PM EDT Wed Mar 21 2018 CHA will remain south of an upper level low, which will maintain VFR conditions there through the TAF period. The upper low will continue to generate snow showers near TYS and TRI at times through the afternoon. Conditions should rise to VFR as the upper low moves away overnight.
The rest of the week will feature cooler than average temperatures and occasional flurries. Heaviest snow will shift south/east with time into the lower Susquehanna Valley this evening before tapering off from west to east early tonight. NBM/Superblend indicating max temps Thursday ranging from the low 30s over the highest terrain of the Alleghenies, to the low 40s in the Susq Valley.
229 PM MDT Wed Mar 21 2018 An upper ridge is building over the western and central CONUS, with a trough over the east. Dry weather will continue into Thursday, as the upper ridge axis begins to cross the region. The pressure gradient will tighten ahead of an upper wave, and breezy southeasterly winds will keep temperatures near or slightly cooler than today's highs. Type will be mainly rain, although soundings are indicative of some freezing rain across northwestern SD.
304 PM CDT Wed Mar 21 2018 Warmer above normal temperatures will prevail for this period across Kansas. Meanwhile current satellite water vapor imagery shows upper trough axis over the eastern Pacific with strong upper jet energy diving down the back side.
649 PM EDT Wed Mar 21 2018 Windy conditions continue overnight behind strong low-pressure moving up the Mid-Atlantic coast.
318 PM EDT Wed Mar 21 2018 Snow will end this evening as low pressure exits. Dry weather is then expected under high pressure through the rest of the work week. Snow will diminish through the afternoon and evening, and will be limited to the ridges by midnight. Temperatures will drop into the lower 20s in most locations. High pressure building over the Great Lakes will keep conditions dry into the weekend.
1129 AM MDT Wed Mar 21 2018 Latest upper analysis depicts an upper ridge building over the western CONUS. At the surface, light southwesterly winds will become southeasterly this afternoon as a high pressure center strengthens over the central plains. With the ridge building to the west, dry and warmer weather is expected today with highs mainly in the mid 40s to mid 50s. Cooler temperatures will occur over northwestern South Dakota where the coverage of the snow pack is most extensive. On Thursday synoptic scale subsidence associated with the upper ridge building over the forecast area will lead to dry weather and warmer temperatures. As the upper ridge shifts eastward on Thursday night as series of disturbances in the southwesterly flow aloft will bring a good chance of precipitation to much of the area.
Snow will remain above pass levels through the evening, then lower with significant accumulations at the higher elevations into the weekend. Dewpoints have soared into the lower 60's over the srn Sacramento valley with plenty of fuel for destabilization. High freezing levels will likely lower the threat of hail except in the tallest/strongest storms.
253 PM PDT Wed Mar 21 2018 A low pressure system off the California coast will move slowly towards the coast spreading a strong atmospheric river of tropical moisture into southern California.
1232 PM CDT Wed Mar 21 2018 In between systems today as upper closed low spinning on satellite over the Ohio Valley and closed low off Vancouver, with upper ridge between the two. Numerous waves moving down the backside of the low to the east along the eastern borders of the Dakotas. Mostly clear skies today and light west to southwest flow pushing a warm front across the area. Ridge will continue to build east and north tonight with warmer air aloft.
341 PM CDT Wed Mar 21 2018 Flurries and sprinkles taper off this afternoon with dry and slightly warmer conditions Thursday. Surface ridging over the Northland has kept precipitation limited to snow flurries over the southwestern portions of the forecast area this afternoon. With increased sunshine on Thursday, look for highs to climb a few degrees warmer with readings in the middle 30s northeast to the low 40s south.
Somewhat elevated nrly/nerly flow will gradually shift more erly tomorrow morning as high pressure departs to the east. Very dry high pressure overhead will maintain clear skies and VFR. high pressure is swinging in behind the front and settling into the central United States and the northwest gulf region.
250 PM CDT Wed Mar 21 2018 Early afternoon temperatures are currently in the upper 40s to middle 50s and will trend warmer over the next few days. We will see another chance of frost and even freezing temperatures tonight, but it should be the last for a while. The coldest portions of the midsouth, near the Tennessee River may dip into the upper 20s briefly with much of the remainder of the West Tennessee near or slightly below freezing. The a large portion of the remainder of the Midsouth could see frost, but should remain above freezing. Near Tunica and South into the Delta morning lows should be above freezing. Frost can damage any unprotected sensitive vegetation and freezing temperatures may kill any unprotected vegetation.
232 PM EDT Wed Mar 21 2018 Slow-moving low pressure will pass south of New England tonight, spreading clouds and periods of light snow overnight across southeastern Vermont. High pressure will otherwise bring mainly dry weather over the next 5 to 7 days. Afternoon 2-m dewpoints are only in the teens across the North Country, with dry northerly trajectories from strong sfc anticyclone across wrn Quebec and northern Ontario. A weak mid-level trough in WNW flow will settle to our south and west across wrn/central NY during Thursday night. Lows Thursday night mainly in the low-mid 20s. Low pressure system will be exiting to the East, and we will still be under cyclonic flow so maybe a few mountain snow showers around Thursday night. Upper level trough will also still be anchored over our region.
330 PM CDT Wed Mar 21 2018 This afternoon's surface analysis shows a 1024 hPa high pressure centered over northeast Oklahoma.
135 PM EDT Wed Mar 21 2018 Snow should begin to taper off later today as low pressure exits. Dry weather is then expected under high pressure through the rest of the work week. Snow rates will gradually lessen this morning and afternoon as the upper low transitions east and support wanes. Snow is expected to continue through part of the day as low pressure crosses the OH Valley and Mid Atlantic regions.
256 PM EDT Wed Mar 21 2018 The stratocu deck is being stubborn for Key West and a stretch of the Lower Keys early this afternoon, but the rest of the island chain are experiencing more breaks from the clouds.
Accumulations should be fairly low, up to a half an inch across the higher elevations (above 2KFT). No major impacts expected with ground temperatures mainly above freezing. Clouds continue to extend into north and central GA as the main upper low pivots toward the east coast. The upper trough will move out of the southeast U. If there is accumulation it should be limited to grassy areas, and mainly in the higher elevations and generally a dusting to a half inch at the most. Lows tonight will drop to or just below freezing across extreme north Georgia tonight.
245 PM MDT Wed Mar 21 2018 Upper ridge will build some over the area overnight through Thursday allowing for mild and fairly quiet weather. main difficulty will be with varying amounts of mid and high clouds moving through the ridge ahead of an upper trough near the west coast.
256 PM CDT Wed Mar 21 2018 High pressure centered over eastern Oklahoma this afternoon will gradually shift to the east of the area Tonight and into Thursday resulting in a warming trend across the area for the remainder of the work week and into the early part of the weekend.
349 AM EDT Fri Oct 13 2017 High pressure will build across the region today through Saturday. A cold front will push south into the Great Lakes Saturday but stall north of Ohio and Lake Erie.