Aikyam-Lab/Synoptic-Bench huggingface dataset:
1151 AM EST Wed Nov 30 2016 Dry cold front clearing southeast Michigan this afternoon, with narrow Area of IFR/MVFR clouds tending to mix out/lift and slide off to the east. Upstream IFR ceilings/fog likely dissipating, not advancing past the higher terrain of the Irish Hills. WV and IR imagery reveal shear max of interest positioned along the eastern flank of the broad trough centered over the central US. Cold front currently hung up along the Lake Michigan shoreline will release east as large scale support translates over Lower Michigan this aftn. Winds will then increase from the southwest this evening as cooler air begins to funnel over the lakes.
108 PM EST Wed Nov 30 2016 An approaching cold front will cross the area this evening. Near record high temperatures today will lower to near normal for Thursday behind the cold front.
329 PM CST Wed Nov 30 2016 At 3 PM, a low pressure area was centered over west-central Wisconsin. Any snow amounts from late this afternoon into tonight will be mainly confined to southeast Minnesota, northeast Iowa, and the higher terrain in western Wisconsin. With extensive cloudiness and neutral temperature advection at both the surface and aloft tonight, did not deviate much from the low temperatures that occurred this morning. For Thursday, the surface and upper level low will slowly move east northeast across central Wisconsin during the morning and upper Michigan during the afternoon.
Satellite imagery showing the main upper level low pressure system continuing to spin off to the northeast, current sitting over central MN. Models are in good agreement showing that main upper low making a continued eastward push through the short term period, moving into western WI by 00Z and further through the Great Lakes/Ontario areas through the overnight hours. Will continue to keep the mention of flurries going across northern portions of the CWA through the morning hours, with models showing a lobe of energy associated with the low passing just off to the north-northeast.
Latest satellite imagery showed a closed upper low centered over the Upper Mississippi Valley. This was associated with an upper trough which dipped down into the Lower Mississippi Valley. Some cold advection winds from the tight pressure gradient in the wake of the cold front was making its way to the surface in the form of occasional 20-25 mph wind gust. As far as temps are concern lows tonight will be from the lower 30s north to the middle 30s elsewhere. Highs for Thursday will range from the upper 50s to the lower 60s.
1109 AM EST Wed Nov 30 2016 Southerly flow of warm moist air will continue through tonight ahead of cold front moving through the southeast states.
Clear skies and considerably cooler temperatures are expected tonight. An east wind will develop by Thursday night on the backside of the high pressure system and a coastal trough will begin to develop off the Lower Texas Coast.
306 PM CST Wed Nov 30 2016 Low pressure lifting northeast out of the Great Lakes tonight and Thursday will bring cooler westerly flow to the region.
945 AM PST Wed Nov 30 2016 Sunny and mild today with weak high pressure aloft. Cold again tonight with increasing high clouds ahead of a trough of low pressure that will deepen over the Southwest Thursday.
After 06z moisture deepens along the Continental Divide as the next upper trof drops southeastward through the Northern U. though it will likely be a couple degrees warmer over the mountains than last night. Light snow gets going along the Continental Divide on Thursday as weak forcing from the upper trof approaches. it will remain dry with temperatures similar to a degree or two cooler than those of today. though mtn top winds will increase into the 20-40kt range during the afternoon as the trof approaches.
300 PM EST Wed Nov 30 2016 Low pressure over the upper Great Lakes will track into eastern Canada tonight. An associated cold front will push through the Mid Atlantic late tonight.
1208 PM EST Wed Nov 30 2016 A strong cold front moves through this afternoon and evening. Cooler high pressure to end the week. A low pressure system moves east across the Great Lakes region this morning. An associated warm front lifts north producing widespread showers and isolated thunderstorms this morning. A cold front extends south from the low, and is expected to reach the OH river by 18Z. This cold front will bring an increase in intensity of the showers. Much cooler weather is expected for the end of the work week with slightly below normal temperatures. Most of the area will remain dry, but in the NW flow and with upper trough swinging through, it's possible that the mountains see some light snow showers.
352 PM CST Wed Nov 30 2016 Skies have cleared across the region this afternoon as the cold front that pushed through the area overnight has moved into Georgia and eastern Alabama. One relatively nice day tomorrow with high pressure centered over the region. Winds will gradually shift as the high progresses across from northeasterly to easterly by Thursday night.
Low pressure over the Great Lakes will produce some moderately gusty west winds today. Clouds rotating around the associated upper low will affect at least the northern cwfa. High pressure will begin to move in as the low pressure over the Great Lakes continues to shift east. Differences develop on how quickly the upper low will lift ene into the southern U.
1113 AM CST Wed Nov 30 2016 High pressure over West Texas will build to the east this afternoon and the tight pressure gradient along the coast will continue to weaken. /ISSUED 507 AM CST Wed Nov 30 2016/ Cooler/drier air filtering into SE TX as the cold front finally moves offshore this morning. With the upper trof lagging a bit, clouds will be a bit slower to clear the area.
1036 AM MST Wed Nov 30 2016 A very weak short wave ridge will move through the area today though if you live near the northern mountains, you might not realize it. Cross sections still show the lower atmosphere saturated over the Park and Gore ranges and with westerly flow expected, clouds and light snow showers will continue. By this evening, a weak short wave trough will drop down from the northwest. After midnight, upper level support starts digging south and the trough will follow causing snow to increase south of I-70.
Low pressure over the Twin Cities area continues to wrap light snow southward over the eastern CWA, as well as portions of central SD. Wrap around moisture will remain with us for the next few days despite low pressure slowly filling and lifting to the northeast. Continued to mention Snow or Freezing Rain for portions of the Coteau tonight, however again intensity will be too low and it appears ground temperatures too warm for it to be a significant problem, though will have to monitor.
122 PM EST Wed Nov 30 2016 Mild today with showers ahead of an approaching cold front, with much colder temperatures into the weekend. Quick update late this morning to make minor adjustments to hourly temperatures and throughout the day and increase PoPs and winds along the cold front as it crosses the region tonight. Saturation of the low-levels has been slow, as a layer of dry air evident on last night's sounding has delayed the onset of steadier rain. Gradually colder though the period as a mid level trough slowly moves across eastern Canada.
The mid level cold front is currently passing across extreme eastern WA and heading into the ID Panhandle at around 1000 AM this morning. The higher intensity snowfall will result in slushy travel conditions above the 2000 ft elevation. The cold and unstable upper level trough of lower pressure will move in over the region this evening. /SVH 18Z TAFS: A cold front passing through extreme eastern WA and into the ID Panhandle will spread a mix of snow and rain.
As a vertically stacked low pressure system continues to push over the Upper Midwest and into the Great Lakes Region, periods of light snow continue to sneak into far eastern Montana.
The cold front and related moisture band will extend just north of the area around daybreak, then will weaken and slow down as it sags into the central peninsula during the daytime. with the higher chances across the southern sections.
1114 AM CST Wed Nov 30 2016 WV imagery this morning was showing a deep upper trof over the cntrl conus along with a tight circulation/sfc reflection centered over the Upper Midwest. Snow activity all in part to potent vort max rounding the backside of the upper level low.
202 PM MST Wed Nov 30 2016 Upper low is over MN/WI, gradually shifting eastward. Next upper trough will approach the region Thursday.
104 PM EST Wed Nov 30 2016 A developing area of low pressure will move through the Gulf of Maine tonight into Thursday. In its wake, brief s/wv ridging wl occur acrs the CWA with little in the way of pcpn expected most of the day. 00z GFS is warmer than 00z NAM with temps aloft as was the case for yda's event. Most locations to the north of a Bridgewater-Greenville line look to rmn all snow with heavy snow expected late tonight into Thur mrng. Low pressure will continue to move to the northeast into the Maritimes Thursday Night. A trough of low pressure will remain over the region and keep skies mostly cloudy, especially in the north.
250 PM EST Wed Nov 30 2016 Skies are mostly sunny with temperatures averaging in the lower to mid 80s along the Florida Keys. Surface wise, an expansive western Atlantic ridge axis is aligned across the southern half of the Florida peninsula.
Low pressure over the lee of the northern Rockies will bring increasing clouds and eventually snow chances from west to east today. A few of our normally cooler locales were even into the double digits below zero.
1117 AM CDT Mon Mar 13 2017 Strong low level cold advection is ongoing behind front, with temperatures only in the low to mid 30s across far northeast Oklahoma late this morning.
Approaching cold front will cause lowering VFR cigs through the day becoming MVFR by late afternoon at KCHA and early evening KTYS/KTRI as showers reach vcnty all terminals.
Clipper type Low pressure system will drop southeast into the middle Mississippi Valley early today. Still a bit uncertain as to whether the precip will cause evaporative cooling of the column enough to produce near freezing surface temps as it spread into the forecast area early today. Rain chances will then decrease from west to east this afternoon into tonight as the low moves off to our east. Another cold Canadian high pressure system will bring drier conditions for the remainder of the short term.
/issued 1122 AM CDT Mon Mar 13 2017/ At 16z, the cold front was very close to the Interstate 30 corridor. Some minor updates were also made to the high temperature forecast for today. Upper trough lagging behind sfc front and stg nw flow aloft this aftn setting up will continue throughout the week.
An upper low embedded in a northern stream longwave trough is seen clearly on WV imagery this morning over Missouri. The upper trough will amplify today, covering the entire eastern half of the country by tonight. In addition, the Eastern Seaboard down through the Tri-State region reside under a cool, stable wedge of high pressure. Thus, rain amounts will likely be around an inch; with the highest accumulations east of a line from Tifton through Panama City.
A cold front will continue to push across the region this morning.
416 AM PDT Mon Mar 13 2017 The high pressure ridge that dominated yesterday's weather has flattened some overnight as a trough of low pressure in the Gulf of Alaska drifts eastward toward the West Coast. Today through Tuesday the high pressure ridge will amplify across the western United States. A frontal boundary packing low pressure waves containing subtropical moisture that currently extends southwestward from Vancouver Island is expected to clip the northwestern portion of our forecast area through Tuesday. Overall, followed the higher resolution models that seem to have a better handle on this cloudiness.
Warm and dry conditions will dominate the week ahead as high pressure lingers over the Southwest. High pressure over the area today with just a little bit of high cloud cover passing through.
Models are in fair agreement with swinging a trough out of the Plains and across the Southeast today. They are also in agreement with bringing showers into the forecast area ~18Z as the cold front moves in. As colder air filters in behind the front and a few disturbances slide in on the back side of the departing trough, would not rule out seeing a quick rain/snow mix early Tuesday morning. Otherwise, everyone else will be warm enough for just rain with lows ranging from the low/mid 30s. Tuesday will not see much of a warm up with highs in the low/upper 40s as a breezy northwesterly wind continues to advect cold air into the region and cloud cover lingers.
904 AM MST Mon Mar 13 2017 High pressure will dominate much of the western states this week.
Upper level ridge continues to build into the region. As the ridge axis moves overhead temperatures will continue to warm on Tuesday.
Surface wise, a broad area of low pressure is located in the western Gulf of Mexico with a ridge axis nearby our area.
Storms holding together and remaining severe is on the lower end of probability since we will not have much of a chance to realize any instability with abundant cloud cover. Any increase to the higher end of MVFR or low-end VFR ceilings will be short lived as IFR conditions are expected to return tonight and persist through Tuesday morning.
425 AM PDT Mon Mar 13 2017 High pressure at the surface and aloft will keep conditions dry and unseasonably warm over central California through the end of the week. Water vapor satellite imagery depicts the mid/upper level ridge extending northward from the Pacific across the western US, with one high pressure center located directly over central California. The ridge is progged to maintain the dry and unseasonably warm conditions across our area, with highs around 8-16 degrees above climo for the next couple of days.
811 AM EDT Mon Mar 13 2017 An area of low pressure developing off the coast will bring another chance of rain to the area today through Tuesday morning.
With southerly winds ahead of the precipitation, temperatures have already recovered into the low 40s for the majority of the area despite the cloud cover. Surface map shows an oblique inverted trough situated across Middle Tennessee this morning. An area of showers that is advancing ahead of a strong cold front is just now arriving at the Mississippi River, and this promises to affect our terminals later this morning through the afternoon, and maybe beyond 00Z at CSV.
Clear skies across interior NorCal early this morning as strong high pressure along with offshore surface flow continue. Current temperatures are a little cooler compared to 24 hours ago and generally range from the 20s and 30s in the mountain valleys to the mid 40s to mid 50s elsewhere.
The high pressure system will move neat the MN/MAN/Ontario border by late afternoon. Water vapor loop indicated an upper level trough located over the southern MAN/Ontario border. Trough will move southeast today. Upper level ridge axis was located over the west coast. Upper level ridge will shift into the Northern Plains and central Canada by 12Z Thu.
644 AM CDT Mon Mar 13 2017 Upper closed low over the Gulf of Alaska and a trough of low pressure from the Hudson Bay into the Missouri Valley with sharpening ridge between the two over the western CONUS. Light snow to develop tonight mainly over north central Nebraska to the east of Highway 83 on the nose of 150kt+ jet rounding the upper ridge today. After a quiet start Tuesday, northwest flow aloft will usher a disturbance across the High Plains and work in conjunction with a mid-level warm front to produce light qpf. At the surface, modified arctic air remains, thus light freezing precipitation is possible. Any potential freezing precip should be light as the model consensus suggests storm total QPF of a tenth of an inch or much less, with much of that as snow or rain.
/issued 334 AM CDT Mon Mar 13 2017/ Another back door cold front is pushing west/southwest through our CWA overnight. Temps will climb into the low 60s across our area and should end up being a tad cooler than normal. A western CONUS ridge/eastern CONUS trough will generally be maintained through the week, although the pattern will shift eastward late in the week bringing the upper ridge over the Plains states. After this morning's cold front the next cold front is still expected to be of the backdoor variety.
907 AM PDT Mon Mar 13 2017 High pressure aloft will continue dry and very warm days inland this week, while the marine layer and weak onshore flow keeps areas near the coast cooler with areas of low clouds and fog. Slightly cooler by midweek as a weak low pressure trough weakens the ridge and increases onshore flow.
Considerable MVFR cloudiness will persist today ahead of a cold front that will be advancing across the forecast area. Temps are also running a bit warmer as clouds have helped to keep temps up a bit. A Canadian high centered over southern Canada will push a fast moving cold front currently located in Oklahoma into the coastal waters by this evening.
this airmass spills west onto the high Plains of Montana where it bumps up against a developing ridge over the western third of the CONUS and Canada. the ridge behind the system is expected to be pressing which will move frontal boundary along behind the system. Snow and QPF totals are limited, but freezing rain/sleet could lead to black ice in areas. A high pressure ridge settles into the the desert southwest, pushing warm air northward through the Great Basin.
Otherwise, the overall forecast remains on track with a dry cold front expected to pass through the area this afternoon and into this evening. Considerable MVFR cloudiness will persist today ahead of a cold front that will be advancing across the forecast area. Temps are also running a bit warmer as clouds have helped to keep temps up a bit. A Canadian high centered over southern Canada will push a fast moving cold front currently located in Oklahoma into the coastal waters by this evening.
Surface map shows an oblique inverted trough situated across Middle Tennessee this morning. An area of showers that is advancing ahead of a strong cold front is just now arriving at the Mississippi River, and this promises to affect our terminals later this morning through the afternoon, and maybe beyond 00Z at CSV.
924 AM EDT Mon Mar 13 2017 Morning update only tweaks a few minor things, but overall forecast is still on track showing precipitation moving into the Chattanooga area around 6-8pm and exiting during the overnight hours with most locations (outside of the higher elevations) receiving only liquid precipitation. Chattanooga Airport, TN 46 35 46 26 / 80 60 20 10 Knoxville McGhee Tyson Airport, TN 49 35 44 23 / 70 70 20 10 Oak Ridge, TN 49 35 44 22 / 80 70 20 10 Tri Cities Airport, TN 48 34 42 19 / 60 80 50 30 NC.
This activity will likely slowly lift northward with the warm front through the afternoon before more widespread showers and storms develop over the eastern Gulf of Mexico. A complex forecast period is expected as a low pressure system moves across the region in the next 24 hours. Southeast winds this morning will become southwesterly this afternoon and shift to the northwest in the wake of a cold front late tonight into early Tuesday.
1035 AM MDT Mon Mar 13 2017 A building ridge of high pressure to the west will bring a drying and warming trend which is expected to extend through midweek. As the ridge shifts eastward on Tuesday temperatures are expected to rise and clouds will be shunted north and east of the region. Dry conditions will continue under a strong ridge which will lead to a good warming trend.
1122 AM CDT Mon Mar 13 2017 At 16z, the cold front was very close to the Interstate 30 corridor. Some minor updates were also made to the high temperature forecast for today. /issued 519 AM CDT Mon Mar 13 2017/ Upper trough passing ovhd today and preceding it is a narrow band of showers and isolated thunderstorms across SW AR into NE TX. Upper trough lagging behind sfc front and stg nw flow aloft this aftn setting up will continue throughout the week.
Generally north winds of 15 to 25 mph and gusty are expected at the west Texas and southeast New Mexico terminals this morning behind a cold front. /issued 234 AM CDT Mon Mar 13 2017/ A cold front is moving into the Permian Basin this morning and will be through most areas by noon. Weak cold air advection behind the front will not be enough to offset the increase in insolation over what occurred yesterday so highs today will actually be slightly warmer than yesterday despite the frontal passage. An upper level ridge currently over the west coast of the U.
The cold front will move through the state this afternoon and winds will become northwest behind the front. Today Through Tuesday Night A short wave trough will move thorugh Arkansas today. The west coast upper ridge will remain parked over the west through Tuesday. Northwest flow will continue over Arkansas as a closed low develops over the Ohio River Valley. A cold front will accompany the short wave today. Canadian high pressure will build over the area with dry weather Monday night through Tuesday night. and more widespread freezing temperatures across the north and central sections Tuesday night. and highs Tuesday will be cooler in the lower 40s to mid 50s.
The synoptic pattern early this morning features a weak trough across the eastern CONUS, with another more substantial trough building into the western CONUS. Ridging in between these two features will build into the Ohio Valley through the period, bringing a very pleasant weekend to the region. Surface ridging will slide east of the region tonight into Sunday. Southerly flow will commence on the backside of this high, which will allow temperatures to warm up for Sunday. Will go above the general guidance consensus, which places highs in the lower 80s under mostly sunny skies.
THIS WILL ENHANCE VERTICAL LIFT OVER THE REGION AND ACT TO MOISTEN THE LOW AND MID LEVELS.
THE UPPER TROUGH WILL PIVOT EAST OF THE REGION LATE THIS AFTERNOON INTO THE EVENING. AND TEMPERATURES WILL WARM INTO THE LOW TO MID 80S. DRIER MID LEVEL AIR WILL PUSH INTO THE REGION THIS AFTERNOON AND THROUGH THE OVERNIGHT HOURS ON THE BACKSIDE OF THE UPPER TROUGH. TEMPERATURES WILL BE COOLER INLAND IN THE MID/UPPER 50S. BUT REMAIN IN THE LOW/MID 60S FOR COASTAL LOCATIONS.
453 AM CDT SAT APR 23 2016 Upper ridging is over the region with an upper low over northern Mexico that is moving northward. This upper low will bring an increase in moisture to the area and will allow for a chance of rain and thunderstorms today across areas primarily south and west of the Pecos River. Despite an increase in moisture, temperatures will likely be a couple degrees warmer than yesterday with southerly winds across the area. On Sunday, the upper low will move east of the region resulting in dryer conditions for the area.
634 AM EDT SAT APR 23 2016 WITH A COLD FRONT HAVING MOVED THROUGH OVERNIGHT. WITH COOLER TEMPERATURES AND NORTHERLY WINDS TODAY. HIGH PRESSURE WILL LEAD TO CLEAR SKY TONIGHT WITH LOWS ROUGHLY AROUND FREEZING.
KMAF VAD profiler shows a moderate, 35kt LLJ has developed over the area tonight, w/plenty of high cloud moving thru a dirty ridge over the area. As an upper trough moves NE out of Mexico, could see some convection develop over the Big Bend/Lwr Trans Pecos. This is due in part from increasing moisture interacting with higher terrain, however there is also an upper level low moving onto the Baja of Mexico that is increasing instability. The highest rain chances will be closer to the low in the Big Bend region and diminishing farther north. The upper low moves east of the area Sunday leaving increasing west winds and warmer temperatures.
657 AM EDT SAT APR 23 2016 HIGH PRESSURE OVER THE NORTHERN GREAT LAKES WILL SLIDE SOUTHEAST ACROSS THE LOCAL AREA TODAY AND TONIGHT. THE HIGH WILL MOVE OFF THE MID ATLANTIC COAST SUNDAY.