Aikyam-Lab/Synoptic-Bench huggingface dataset:
1251 PM CST Wed Jan 25 2017 Cooler conditions are occurring across the region today, as gusty northwest winds usher in a more seasonable airmass.
Pops were increased some today based on near saturated low level boundary layer conditions present and otherwise low stratus and upper trough remaining in place. Other changes included to mention some patchy freezing fog in the west. Maliawco A large upper trough continues to cover most of the central and western US today. Montana is in northerly flow aloft on the western part of this trough. This trough will linger tonight with chance of snow showers continuing in the east. NE-SW oriented upper ridge builds into the area from Canada on Thursday with drier air.
Light snow showers will persist today and tonight across the higher terrain of northern and central New Mexico today. Still some snow showers out there, generally favoring the higher terrain. A weak back door cold front has oozed into NE NM and models indicating there could be some light snow along this boundary this afternoon as well.
Water vapor imagery shows cyclonic north flow over the region with a ridge along the Pacific coast and parent low well to our east. Any chance of light precipitation will diminish later tonight and early Thursday as we begin to see more significant height rises as Pacific ridge builds over the northern Rockies.
Forecast remains on track as a surface cold front approaches the area ahead of some moist air. Weak high pressure will remain over the area this morning. Weak high pressure returns Thursday and will persist through the weekend.
250 PM CST Wed Jan 25 2017 A cold front is working its way across the forecast area this afternoon and at 25/20Z is located roughly from around KHEZ to KACP to in between K5R8 and KLCH to near the coast south of KBPT. Rua Cold front will continue to move off to the east and be through the forecast area by early this evening, with much cooler and drier air then overtaking the entire forecast area. Upper level pattern will develop as such that an upper level trough will deepen across the eastern portion of the U. with an upper level ridge forming over the southwest and along the Pacific coast over time.
In the upper levels, a ridge is just off the Florida Atlantic Coast. A trough is located over the Central U. At the surface, a low is located over The Great Lakes with a cold front extending to the Gulf. This cold front will move through the region beginning late tonight.
317 PM CST Wed Jan 25 2017 Generally quiet conditions to continue as the region remains between low pressure moving off towards the Great Lakes and high pressure building into the western CONUS. A bit stronger cold advection as compared to last night and Wednesday (although still relatively weak) in cooler northwest flow will allow temperatures to drop into the teens tonight but should still recover to around normal values for Thursday (upper teens/low 20s).
300 PM CST Wed Jan 25 2017 After a blustery afternoon across the region with wind chill values in the lower teens, expect winds to slowly diminish during the early evening hours as the responsible area of low pressure continues to trek eastward. this much cooler airmass.
Low pressure passing by just to the south will bring continued precipitation to the forecast area into tonight.
/ISSUED 522 AM CST Wed Jan 25 2017/ Light echoes on RADAR just northwest of the forecast area are the result of some mid level clouds and perhaps virga associated with an upper level trough moving across the CONUS. a cold front continues to move through the region and is currently located along a line from Cameron to Athens. Winds shift to the northwest behind the front and much cooler air will filter in through the morning. Highs today will be in the 50s and 60s which is around 15-20 degrees cooler than yesterday. The upper pattern really remains rather benign through the next 5-6 days featuring a large trough over the eastern U.
253 PM CST Wed Jan 25 2017 A broad upper trough will extend across much of the country on Thursday.
Low pressure was movg through far northeast MO, with the pressure fall pattern suggesting a track just north of Chicago by midday, then central lower MI by evening. In addition, with surface temperatures mainly above freezing, freezing rain has not been a big problem. The main deformation zone associated with the upper low will shift north into C/EC WI this morning and remain locked in place through the day before pivoting through the Fox Valley and lakeshore areas during the late afternoon and evening. Periods of freezing drizzle may occur across far northern WI at times today and tonight, with some minor icing possible.
Will continue the high chances for precipitation with low forecast snow amounts. Per webcam and surface observation trends through 1230 UTC, added a mention of patchy freezing drizzle to the James River Valley this morning. Currently, positively tilted long wave upper level trough remains extended from southern California north-northeast into central Canada. The two main embedded features impacting our region are a closed low over the Central Plains and an embedded S/WV trough over northeastern Montana. A few radar returns over my southeast associated with the closed low to our south, though zero impacts for our area.
The atmosphere continues to gradually moisten but still remains somewhat dry in the lower levels.
Forcing associated with the strong jet topping the Rockies ridge will drop into Ontario and the Great Lakes tonight and early Tuesday. Warm advection will develop tonight with the thermal ridge reaching IA into midday Tuesday.
607 PM EST Mon Nov 14 2016 A weak frontal boundary will sag into the forecast area late tonight into Tuesday as low pressure moves slowly east across the northern Great Lakes. This will bring about deep amplification of the longwave pattern and in return more active weather across the region and cooler temperatures. Biggest question will be regarding cloud cover as low level moisture increases slightly within a narrow ribbon of slightly higher theta e ahead of the cold front. The wave will interact with a trough extending south out of a parent low near Hudson Bay, with the base of the trough swinging through mid MI Tuesday night. Even with this second front in 2 days, temperatures will remain above normal through the end of the week as the weak thermal troughs do little to the resident airmass.
This wind will keep areas along the Buffalo ridge more mild, and have kept temperatures a few degrees warmer in exposed areas.
Current surface analysis places high pressure over the Great Basin into the central/southern plains, while low pressure trough dips through the southern prairie provinces into the northern plains. Upper level analysis places deep trough over the eastern Pacific with flat ridging over much of the western conus. A few weak waves moving through the ridge continue to produce occasional cloud cover and a couple light showers over northern Montana. short wave slides east with ridging building back into the area resulting in clearing skies with mild temperatures.
Weak high pressure moves in from the Gulf coast tonight producing mostly clear and near calm winds making conditions ideal for radiational cooling especially away from the wamer waters. High pressure will dominate the local weather pattern with northerly winds of 10 to 15 knots and seas of 3 to 4 feet.
The incoming upper ridge is moving into western Colorado at this time. The models have the upper ridge axis to move across the CWA on Tuesday. For temperatures, Tuesday's highs look to be 2-3 C warmer than this afternoon's highs.
449 PM CST Mon Nov 14 2016 The dry and warm weather conditions will continue this period across Kansas as the upper level ridge amplifies across the central plains.
18Z surface data has a dry cold front running from near KGRB into northern Missouri. A dry front will exit the area this evening followed by high pressure tonight.
431 PM MST Mon Nov 14 2016 Upper ridge centered over southern California today will move into the desert southwest tomorrow. Humidity will be low again on Tuesday, but winds will be light as the lee trough weakens and moves out of the area, so no fire weather concerns are anticipated.
The tail end of a weakening cold front moving into northern California overnight will likely bring some light rain to portions of the North Bay Tuesday morning, and rain chances elsewhere through the day.
This has supported bouts of thick cirrus across the region and this will continue through much of the period as a deep trough digs into the pac NW.
Surface ridging at the surface, brief zonal flow aloft, and over all dry atmospheric column has resulted in another day of dry and mostly clear conditions across Central Alabama. Expect overnight lows in the upper 30s to mid 40s, with the typically cooler spots in the northeast in the lower 30s. Ridging builds back into the area quickly for mid week. An upper trough and associated surface cold front approach the state on Tuesday.
Water vapor and visible satellite channels show a mid- and upper-level positively tilted trough axis shifting south over Texas resulting in high cirrus clouds as a result of the extra divergence aloft. While there is limited moisture with this trough, the overall flow pattern will usher in a slightly drier airmass from the north overnight and into Tuesday.
/issued 245 PM CST Mon Nov 14 2016/ WV imagery shows a weak upper trough passing thru West Texas and Southeast New Mexico, w/light northerly flow at the sfc. For tonight, the NAM is trending warmer at KMRF/KE38, whereas the GFS is trending colder.
932 PM EST Mon Nov 14 2016 Low pressure will lift north just off the Delmarva coast through the rest of the night.
Pacific cold front has moved through much of the area.
Meanwhile, a trough aloft is sharpening as it moves across the southeastern United States and Gulf of Mexico. Short Term Update - The cold front will continue to move southwards through the Florida Peninsula, not reaching the Florida Keys tonight. The trough aloft will continue to sharpen as it approaches Florida.
/issued 238 PM CST Mon Nov 14 2016/ Our area will remain on the backside of an approaching bulge of upper level high pressure through Tuesday with dry subsident conditions dominating. 850 millibar temperatures tomorrow versus today look slightly warmer, and we boosted highs for tomorrow another degree or two to near 80 on the Caprock and lower 80s across the Rolling Plains.
Ceilings associated with the passage of a weak upper level trough could briefly reach MVFR category early Tuesday morning, but expect most ceilings to range from 3500 to 5000 ft at the lowest. Due to increasing clouds tonight, morning lows will be warmer than the last several night.
Northern stream short wave and low pressure system is moving through Quebec with a trailing cold front stretching back to secondary low pressure in the Straits, before arcing into eastern Wisconsin. Cooler air will skirt through the Great Lakes region over the next few days, although daytime temperatures will remain above normal. Cloud cover remains the primary forecast concern in the short term as aforementioned cold front/shallow cooler air slowly sags into lower Michigan tonight and stalls/washes out on Tuesday. More of a brief glancing shot of cooler air and some clouds into northern lower MI on Tuesday. Eastern upper will get more into the lower cloud cover late tonight through Tuesday and may see a little light rain (or drizzle) on Tuesday as a secondary piece of short wave energy and deeper moisture rolls through the northern lakes.
Dry air will filter into the region tonight behind a cold front. /ISSUED 351 PM CST Mon Nov 14 2016/ A weak cold front that extended southeast of a Gainesville to Comanche line as of 3 PM will move southeastward though the rest of the forecast area during the rest of the afternoon through the evening hours. Winds will back to the southwest during the afternoon as lee side trough starts to develop.
532 PM CST Mon Nov 14 2016 Cold front as of 23z was oriented along a FYV. expect a quick scouring out of the lower levels and a return to clear skies. it should be brief with the drier/cooler air eventually winning over. /issued 359 PM CST Mon Nov 14 2016/ A modest cumulus field has developed over much of the region this afternoon ahead of a cold front advancing southeast along the Red River Valley, nearing the DFW metroplex in the next hour or two.
633 PM EST Mon Nov 14 2016 A weak pressure trough will cross the region on Tuesday afternoon and evening, resulting in a brief increase in cloud cover and humidity.
/issued 333 PM CST Mon Nov 14 2016/ (Tonight and Tuesday) A weak cold front is moving through the southern part of west central Texas this afternoon, but is little more than a wind shift. An upper level ridge over the southwestern states will begin to shift east into Texas on Tuesday.
The high will cross our area and plant itself in the southern US for the next few days.
A cold front and upper system will move through the region and bring a few light showers to mainly southeast Arkansas mainly on Tuesday. Winds ahead of the cold front will be southeast at 3 to 8 mph, while behind the front west to northwest 5 to 9 mph.
Near record highs are expected on Tuesday beneath a continued upper level ridge that is dominating the country everywhere west of the Mississippi river.
Mounting southwestern upper ridging will support mid-level warming ahead of a late week cold frontal passage. This translates to subsequent work day warmth back into the lower 80s and milder evenings.
A broad upper trough over the southeastern U. The combination of the colder air aloft and surface temperatures warming into the lower 70s will result in a decrease in low level stability and an increase of cold air cumulus clouds throughout the day Tuesday.
Made minor adjustments to overnight lows, generally going cooler than CONSSHORT guidance. Column does cool however with warm start temperatures should be able to recover into the low to mid 50s with w-nw surface flow so another day with well above average temperatures.
SYNOPTIC SETUP: Short Term begins with a ridge toppling over into the Dakotas and zonal flow behind it running from Montana to off the coast of the Pacific Northwest. A much stronger synoptic trough sets off the coast of the Pacific Northwest and is digging south with a ridge over California amplifying in response. Tuesday Morning: Trough off the coast will dig farther south moving the ridge across our area over these 12 hours.
Not much of a temperature difference is expected behind the front, and if anything daytime highs look to increase a bit as the upper ridging quickly builds over the area in the wake of the upper trof passage, with highs near 80 expected TUE-FRI. Lows will be more seasonal Tue night, but still above seasonal normals, and will begin increasing markedly mid to late week with deep layer southerly flow developing as the ridge departs to the east.
Weak warm air advection on west winds develops over the boundary layer tonight, with a weak cold front moving in late in the day. The overnight warm air advection should provide an even warmer day Tuesday despite light southwest winds and some more periods of cirrus and have temps on the warm end of guidance.
A weak Pacific cold front was approaching the region from the northwest this afternoon.
Temperatures tonight will be a bit warmer than last night due to increased dewpoints ahead of the weak boundary. High pressure will then quickly build across the region by tomorrow afternoon/evening.
920 PM EST Mon Nov 14 2016 A weak pressure trough will cross the region on Tuesday afternoon and evening, resulting in a brief increase in cloud cover and humidity.
Therefore, decreased the lows a degree or two in the SE furthest from the boundary. Ceilings associated with the passage of a weak upper level trough could briefly reach MVFR category early Tuesday morning, but expect most ceilings to range from 3500 to 5000 ft at the lowest. Due to increasing clouds tonight, morning lows will be warmer than the last several night.
519 PM CST Mon Nov 14 2016 A weak cold front will push through the area this evng. plus 850 temps are a little warmer.
Early afternoon temperatures were mainly in the lower and middle 60s. Otherwise, it sill looks like an impotent cold front will approach the Mid-State tonight and cross the area on Tuesday.
333 PM MST Mon Nov 14 2016 High pressure remains in control today and tomorrow with just some passing high cirrus clouds streaming across the area.
535 PM CST Mon Nov 14 2016 The dry and warm weather conditions will continue this period across Kansas as the upper level ridge amplifies across the central plains.
/Issued 349 PM CST Mon Nov 14 2016/ Temps this afternoon have risen into the 70s across the Panhandles as ridging begins to fill into the region.
The front was making very slow progress to the southeast tonight with a west to northwest and cooler temperatures behind it. A cold front and upper system will move through the region and bring a few light showers to mainly southeast Arkansas mainly on Tuesday. Winds ahead of the cold front will be southeast at 3 to 8 mph, while behind the front west to northwest 5 to 9 mph.
318 PM MST Mon Nov 14 2016 An upper level high center will move from over srn CA this evening, to over the srn NM border by Tuesday evening, with the upper ridge axis shifting eastward over CO. Highs on Tue over the southeast plains will be around 20 degrees above average, with around 15 degrees above average in the high valley locations.
1055 PM EST Mon Nov 14 2016 good ridge to valley split in temperatures occurring presently with ridges holding in the mid 40s, while deep valleys have fallen off into the lower 30s. With a slightly better gradient tonight, expect much higher temperatures on the ridges holding closer to 40 tonight. Tonight will remain quiet, and kept the temps going into the upper 20s in the cooler valleys given the almost desert like reactions overnight. We may also see a increase in clouds across our western CWA border toward dawn as cold front approaches. Tuesday a cold front will approach and move through west to east. This cold front is dry and weak therefore little impact is expected, other than slight increase in temps and more cloud cover.
630 PM EST Mon Nov 14 2016 Low pressure over lake michigan will move east and pull a cold front across the area tuesday night.
High pressure aloft will maintain the unseasonably warm and dry conditions for the first part of the week.
With a slightly better gradient tonight, expect much higher temperatures on the ridges holding closer to 40 tonight. Tonight will remain quiet, and kept the temps going into the upper 20s in the cooler valleys given the almost desert like reactions overnight. We may also see a increase in clouds across our western CWA border toward dawn as cold front approaches. Tuesday a cold front will approach and move through west to east. This cold front is dry and weak therefore little impact is expected, other than slight increase in temps and more cloud cover.
612 PM EST Mon Nov 14 2016 Low pressure over lake michigan will move east and pull a cold front across the area tuesday night.
900 PM CST Mon Nov 14 2016 A weak cold front is currently crossing the forecast area, with little fanfare as was anticipated. 20z/2pm surface analysis shows a weak cold front extending from near Madison, Wisconsin to just east of Kansas City, Missouri. The airmass ahead of the boundary remains quite dry, although surface dewpoints have risen slightly into the lower to middle 40s across central Illinois this afternoon.
757 PM MST Mon Nov 14 2016 An upper level ridge building over the Central Rockies will bring mostly clear skies tonight and Tuesday. The airmass will warm tomorrow with highs in the lower to mid 70s across northeast Colorado. The incoming upper ridge is moving into western Colorado at this time. The models have the upper ridge axis to move across the CWA on Tuesday. For temperatures, Tuesday's highs look to be 2-3 C warmer than this afternoon.
temps are mainly in the lower to mid 40s under a mostly clear sky made up of a thinning deck of mid/high clouds. Upper ridge centered over southern California today will move into the desert southwest tomorrow. Humidity will be low again on Tuesday, but winds will be light as the lee trough weakens and moves out of the area, so no fire weather concerns are anticipated.
Chattanooga Airport, TN 38 67 44 71 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 37 64 45 68 / 0 0 0 0 Oak Ridge, TN 37 64 43 69 / 0 0 0 0 Tri Cities Airport, TN 33 60 40 63 / 0 0 10 0.
1100 PM EST Mon Nov 14 2016 Low pressure over lake michigan will move east and pull a cold front across the area tuesday night.
Proton Previous Discussion SYNOPTIC SETUP: Short Term begins with a ridge toppling over into the Dakotas and zonal flow behind it running from Montana to off the coast of the Pacific Northwest. A much stronger synoptic trough sets off the coast of the Pacific Northwest and is digging south with a ridge over California amplifying in response. Tuesday Morning: Trough off the coast will dig farther south moving the ridge across our area over these 12 hours.
559 PM CST Mon Nov 14 2016 20z/2pm surface analysis shows a weak cold front extending from near Madison, Wisconsin to just east of Kansas City, Missouri. The airmass ahead of the boundary remains quite dry, although surface dewpoints have risen slightly into the lower to middle 40s across central Illinois this afternoon.
Adjusted temperatures down a bit across central Oklahoma where we saw an area of cooler max temps this afternoon due to lingering low clouds and also peak-heating high cloud shield.
/issued 203 PM CST Mon Nov 14 2016/ SHORT TERM (Tonight through Tuesday Night):Pesky mid and high level cloudiness continues to linger over Deep South Texas and the Rio Grande Valley, with KBRO doppler radar picking up isolated patches of light rain within Hidalgo and Cameron Counties and the Lower Texas coastal waters south of Arroyo City. Warmer temperatures are likely during the period given the abundant sunshine expected.
Temps will trend much cooler, with lows below freezing region-wide Thu and Fri mornings. Cold front off the coast 130W will move inland across Oregon Tuesday and into our CWA Tuesday afternoon and evening.
244 PM CDT THU SEP 1 2016 High pressure will continue to build into the region tonight, with NNE winds throughout the overnight. Tomorrow will be more of the same, with high pressure ridge keeping the winds more northeasterly and mostly sunny with some cumulus across Central Illinois and max temps in the mid to upper 70s. High pressure centered over the Great Lakes is expected to bring some very pleasant weather conditions through the holiday weekend as remnants of Hermine slowly track up the southeast coast this weekend and eventually stalls out just off the East coast Tue.
402 PM CDT THU SEP 1 2016 It will be dry with pleasant temperatures into Friday as an upper level ridge reaches across the plains and up into the Great Lakes.
315 PM MDT THU SEP 1 2016 Upper level analysis has amplified flow across the area with ridging across the central CONUS and trof entering the Pacific Northwest. At the surface, high pressure is located across the Great Lakes region with low pressure over central Montana. Upper ridging remains across the Northern Plains with partly cloudy skies expected overnight. Upper ridge shifts east as western trof digs into the Pacific Northwest. While windy conditions continue on the South Dakota plains, behind the surface trof in WY, winds become gusty out of the southwest, and dewpoints decrease markedly. Upper trough over the western CONUS will move eastward during the weekend bringing unsettled weather to the northern plains.
305 PM CDT THU SEP 1 2016 Fairly benign weather is anticipated for the next 24 hours as the region sits under an upper level ridge. The ridge is forecast however to build east, allowing for a possible change. Friday the low pressure system will deepen over northeastern Montana with winds increasing atop the central plains.