Aikyam-Lab/Synoptic-Bench huggingface dataset:
1030 PM EST Sun Feb 5 2017 Pressure gradient will slacken as the ridge builds overhead, resulting in light and variable winds overnight. On Monday, low level flow veers to the E/NE as the ridge builds over the peninsula. Under partly/mostly sunny skies, max temps will be in the M/U70s except L70s along the Volusia County coast due to the cooler shelf waters. Gentle to moderate N/NE breeze bcmg E/NE as a weak frontal trof off the SE coast lifts up the east coast, allowing high pres centered over the GOMex to drift over the SE coast.
Current temperatures were at or below forecasted lows in some locations so made some adjustments to low temperature forecast, but lows are still expected to be warmer than this morning's lows.
832 PM EST Sun Feb 5 2017 A breezy cold front will pass with little if any precipitation this evening. High pressure and fair weather on Monday will be followed by widespread precipitation moving in Monday night and lasting into mid-week.
For tonight, a warm front will lift northward with increasing clouds late in the night. South winds with mild air will warm highs into the lower 60s for most locations.
At the surface, high pressure remains down the Eastern Seaboard and into the Western Atlantic.
A low pressure disturbance off shore from Northern California will merge with a disturbance near the Coast of British Columbia and proceed inland tonight and Monday. A cold front will cross the Upper Snake Plain Monday afternoon and evening.
619 PM EST Sun Feb 5 2017 High pressure will move east across Indiana and Ohio tonight providing fair weather with seasonably cold temperatures. Shower chances will increase during the day Monday as a low pressure system approaches from the plains.
Chattanooga Airport, TN 37 60 51 66 / 10 50 20 60 Knoxville McGhee Tyson Airport, TN 34 57 50 66 / 0 40 30 60 Oak Ridge, TN 34 57 50 65 / 0 50 40 70 Tri Cities Airport, TN 31 60 47 67 / 0 40 30 60.
602 PM CST Sun Feb 5 2017 A warm front extends from near a TKI, to JDD, to just S of GGG, to 3F3, to near HEZ line as of 2330Z. /issued 341 PM CST Sun Feb 5 2017/ As of 2115z, a warm front continues to move northward across the region and is located just south of Interstate 20. North of the front, daytime temperatures struggled into the low 50s, but south of the front, strong warm air advection allowed temperatures to quickly warm into the low to mid 70s. Patchy showers continue in an area of isentropic ascent along the warm front. Otherwise, more patchy dense fog is expected areawide tonight as low level moisture surges northward following the warm front.
Conditions will change rather dramatically this time tomorrow as low level moisture increases steadily from later this evening through Monday as the ridge slides off to the east. A warm front will try to reach southern MN Monday morning. However, by late Monday afternoon the depth of the low level moisture will be enough to potentially support some patchy drizzle or freezing drizzle.
The warm front is just south of I-20. /issued 602 PM CST Sun Feb 5 2017/ A warm front extends from near a TKI, to JDD, to just S of GGG, to 3F3, to near HEZ line as of 2330Z. /issued 341 PM CST Sun Feb 5 2017/ As of 2115z, a warm front continues to move northward across the region and is located just south of Interstate 20. North of the front, daytime temperatures struggled into the low 50s, but south of the front, strong warm air advection allowed temperatures to quickly warm into the low to mid 70s. Patchy showers continue in an area of isentropic ascent along the warm front. Otherwise, more patchy dense fog is expected areawide tonight as low level moisture surges northward following the warm front.
Even lows overnight in southeast NE and southwest IA will be still just above freezing in the lower 30s, which should help to limit accumulations. 4" soil temperatures are also running fairly warm along/south of I80 in the lower 40s.
With isentropic lift ahead of this low. have a hard time seeing much in the way of freezing rain as the very shallow layer of above freezing air aloft will rapidly cool as the profile saturates. did maintain a very small possibility for some light freezing rain through the early morning hours. but think that any freezing precip will be brief at best.
431 AM CST Sat Dec 3 2016 An upper level disturbance is currently pushing east into the Plains as and upper level low is located across northeastern Mexico early this morning. This evening as the trough tracks across the region light rain will develop across southeastern Kansas and spread into central Missouri. An increase in clouds and rain spreading into the area will result in highs in the middle 40s to the lower 50s this afternoon.
High pressure ridge across the area will move east to northeast today while a weather system approaches from the west. That same warm air will keep highs on Mon and Tues in the low 40s in Central Illinois.
602 AM CST Sat Dec 3 2016 H5 hand analysis from this evening continues to indicate a fairly chaotic pattern across the lower 48 and Canada. High pressure was located over the eastern Pacific, off the coast of central California. north of this high, a trough of low pressure was located over British Columbia with 100 to 150 meter falls noted across the west coast of Canada. East of this trough, high pressure was located over northern Manitoba with a downstream trough of low pressure located over Quebec. Highs will be in the lower to middle 40s in the western half of the forecast area, where clearing is expected by afternoon.
420 AM CST Sat Dec 3 2016 (Today and Tonight) A large upper low will continue to dig south over northwest Mexico through tonight, then begin lifting northeast towards the area on Sunday.
At the surface, a cooler northeast breeze (and the clouds) will help to keep high temperatures in check by a few degrees. Chattanooga Airport, TN 52 43 48 45 / 20 100 100 50 Knoxville McGhee Tyson Airport, TN 49 40 46 43 / 0 90 90 50 Oak Ridge, TN 50 40 47 43 / 0 80 80 50 Tri Cities Airport, TN 46 35 45 40 / 0 50 80 50.
This precipitation is expected to fall as snow across a majority of the CWA this morning with the exception of south central Kansas where temperatures look to remain above freezing. Lows tonight are anticipated to range from the upper teens along the KS/CO border to around freezing across south central Kansas.
Current surface analysis places low over southern Alberta with trough dropping through eastern Montana towards the Black Hills. Weak ridging between systems will bring dry conditions during the day on Sunday.
A cold upper trough will slowly cross the area during the first half of the upcoming week, bringing the coldest temperatures of the season thus far.
839 AM EST Sat Dec 3 2016 High pressure will move from Northwest to North of the region Today, with the flow becoming more onshore. High cloudiness will continue to stream East across the area, as Low pressure develops over the Western gulf coast.
A low pressure trof will push into the area this evening with areas of light snow possible during the evening and overnight periods.
A deepening upper low is sliding southeast across the Baja Peninsula, and will soon cut off from the upper pattern. Should greater cooling in the lower levels occur, any wintry precip will be brief, generally limited to the early morning hours Sunday.
High pressure will continue to dominate today resulting in dry weather conditions through tonight.
705 AM EST Sat Dec 3 2016 High pressure will build in later today but slide quickly off to the east on Sunday. Low pressure over ME and Canadian Maritimes will move to the east and relax the NW flow - but not until late today and this evening. Still looking for an inch or less for accums on the higher ridges in the NW, and nil elsewhere. Temps will be cooler tonight without so much wind to keep us well-mixed. Just the highest hill tops of the SE may get a dusting. It is a nighttime event, and temps in the nrn tier are much more likely to be sub-freezing all night.
A trough of low pressure is stretched along the Texas and Louisiana coasts this morning. The pressure gradient around this trough is keeping winds up with sustained winds of 15 to 20kts across the coastal zones and flirting with 30kts over the coastal waters. Aloft, an upper low is over the Gulf of California with an active southern jet streaming moisture northeast ward from the Pacific across Texas and Louisiana.
Aloft, a deep closed low was centered along the AZ/Mexico border, which was helping to push a plume of mid/high clouds across the southern Plains into the TN Valley. There will be a small diurnal rise in temperatures today with highs in the low/mid 40s across southern Indiana to mid/upper 40s across southern Kentucky. 25 of an inch or less, with the highest amounts focused along the KY/TN border.
Aloft, a deep closed low was evident in water vapor and RAP analysis over the northern Gulf of California and was drifting slowly east. For these reasons we have confined the highest precipitation probabilities across the south, spreading east to the southeast portion of the area by late in the day, and then decreasing markedly during the evening.
/issued 420 AM CST Sat Dec 3 2016/ (Today and Tonight) A large upper low will continue to dig south over northwest Mexico through tonight, then begin lifting northeast towards the area on Sunday.
With the expected cloud cover, went closer to or even below the cooler of the MOS numbers for highs.
There will also be some light precipitation that follows the upper trough as it moves overhead Saturday night, and mid level temperatures cool slightly. The post frontal airmass will be milder than ahead of the trough as a modified Pacific airmass moves into the Dakotas.
The highest rain chances and heaviest rain through 12z Sunday should occur generally along and north of Interstate 20.
356 AM MST Sat Dec 3 2016 Temperatures are running between 3 and 5 degrees cooler at many locations this hour compared to 24 hours ago as skies are clearing out behind a departing boundary. Under these sky conditions temperatures will be running 2 to 6 degrees warmer at many locations by this afternoon, but will remain pretty chilly. Dry weather and a few more degrees of warming are expected on Sunday as high pressure briefly builds over the area.
A warm front will pass over the region today, bringing clouds to most areas and a few showers to the mountains. The heaviest snow will fall Sunday afternoon into Sunday evening as a strong cold front moves through. Wind gusts will briefly reach 20 mph in the lower elevations, and up to 35 mph in the mountains as and shortly after the front moves through. The cold front will usher in the coldest air of the season to date.
A weak cold front will settle in across the far northern part of our forecast area today and become stationary. A much stronger cold front drops in from the north Sunday, spreading valley rain and mountain snow across much of the area through the day.
Winds will veer to a more easterly flow this afternoon, becoming breezy and gusty at times as high pressure begins establishing across the region in the wake of a frontal passage.
538 AM CST Sat Dec 3 2016 Cool high pressure at the surface over Missouri and Illinois will move eastward today ahead of a trof of low pressure which will deepen over the Great Plains. Mid and high level clouds are already overspreading the area from the southwest as the flow aloft becomes more southwesterly ahead of the trof.
1008 AM EST Sat Dec 3 2016 High pressure will prevail with dry weather through tonight.
Also, lowered the high temperature for today as colder air pours in behind the departing trough. Thinking valley inversions may hold on a bit longer and be tough to break this afternoon with limited mixing, so went closer to the cooler MAV guidance. Temperatures are running between 3 and 5 degrees cooler at many locations this hour compared to 24 hours ago as skies are clearing out behind a departing boundary. Under these sky conditions temperatures will be running 2 to 6 degrees warmer at many locations by this afternoon, but will remain pretty chilly. Dry weather and a few more degrees of warming are expected on Sunday as high pressure briefly builds over the area.
Will see light LES gradually diminishing today as a ridge moves overhead. In the extended, GFS and ECMWF show a broad and deep 500 mb trough across most of the U. This closed low makes it east into the upper Great Lakes 12z Thu and the associated trough makes it into the ern U. At KIWD: Gradual improvement is expected as high pressure moves into the area. An approaching low pressure trough crossing Tue night into Wed will result in southerly winds increasing 25-30 kts Mon night and Tue, strongest over central and eastern sections.
Temperatures will warm and winds will relax for Sunday as high pressure builds in.
Otherwise, conditions should remain dry today and tonight with light winds as a high pressure area moves across the area. An upper level trof will move across the Great Lakes region and bring a rain and snow mix Sunday.
Clouds have lingered across the north but some clearing is advancing from the south as ridge axis slides through the state. The low clouds will continue to slowly erode from south to north this morning, however only to be quickly replaced by mid and high clouds ahead of an approaching system.
1028 AM EST Sat Dec 3 2016 Dry conditions will persist through this evening with surface ridging across the region.
901 AM EST Sat Dec 3 2016 High pressure will build into the area today. The high will move off to the east on Sunday as an upper level disturbance quickly moves to the Great Lakes.
Surface analysis late this morning shows weak high pressure in place across Illinois and Indiana. with temps cooler than the MAV.
high pressure will build over the mid Atlantic states.
633 AM EST Sat Dec 3 2016 High pressure will build into the area today. The high will move off to the east on Sunday as an upper level disturbance quickly moves to the Great Lakes.
323 AM MST Sat Dec 3 2016 Water vapor imagery showing upper level trof moving across central Colorado at the present time with some drying noted over the Front Range. As the trof sweeps through by daybreak, these lower clouds will also move out of the area. Temperatures will be somewhat warmer today with readings back into the lower 40s with much more sunshine expected. a dry but increase west/northwesterly flow aloft will develop over CO during the day, with the surface lee trough along near the foothills.
252 AM PST Sat Dec 3 2016 Ridging over the Sierra and western Nevada will result in light winds and limited mixing today.
There is a little leeway with that line as we could see snow in slightly warmer locations but accumulations would be extremely limited. Sunday daytime should be precip free as the upper low moves across Mexico and southern Texas.
Am still expecting sct to num shras along with a chance for thunderstorms today due to abundant moisture, an approaching upper low and a cold front draped across the area. Models all agree that the low level convergence with the bdry will be strong and instability ahd of the bdry will be moderate. The lower amounts are expected across the Rio Grande Plains and the higher amounts across the VCT Crossroads. Due to long period swells and large seas, will continue the High Rip Current risk through the morning.
Subfreezing readings will hold on for much of the day north of I-90, so expect light snow or a mix of rain and snow/flurries in these areas. Most areas should see a trace to a few hundredths of liquid, while snow accumulations will be a dusting at best given the near freezing temperatures and warm ground temperatures. Lingering rain across northwest Iowa and southwest Minnesota this evening will likely switch over to light snow diabatic cooling drops readings back below freezing. Could see a few light snow showers or flurries develop near highway 14 late tonight with the trough moving into the region, but will hold mention to just north of our border at this time.
1037 AM EST Sat Dec 3 2016 Snow persists across much of the North Country today, with steady snow expected across the high terrain through tonight.
Latest 08z surface analysis indicates high pressure over much of Minnesota into Iowa. 00z GFS/NAM try to erode the low level moisture in association with stratus deck over the forecast area. 00z GFS/NAM bufkit soundings indicate atmosphere column remains below freezing and saturated through the minus 10 to minus 20 degree celsius layer. as temperatures near the surface warm above freezing.
432 AM CST Sat Dec 3 2016 Cool high pressure at the surface over Missouri and Illinois will move eastward today ahead of a trof of low pressure which will deepen over the Great Plains. Mid and high level clouds are already overspreading the area from the southwest as the flow aloft becomes more southwesterly ahead of the trof.
Things change quite a bit on Sunday as a large upper level low seen on water vapor imagery over Baja California spins off a piece of energy and ejects it northeast today. This energy will develop into a mid level trough and associated PV anomaly across the central Plains tonight, continuing northeast as a negatively tilted trough tracking through the western Great Lakes on Sunday. Given daytime highs are expected to top out in the lower to middle 30s mainly snow is expected across the forecast area, with the best chance for rain across the eastern cwa given slightly higher temperatures.
359 AM MST Sat Dec 3 2016 Upper level analysis has trough over the western and north central CONUS, with a closed low over the gulf of California. Upper trough will cross the region today, with increasing clouds and winds becoming more westerly. West to southwest boundary layer flow will advect in slightly warmer temperatures, with highs in the upper 30s to mid 40s expected.
High pressure centered over the Ohio Valley will shift toward the eastern seaboard today, allowing winds to veer to the northeast locally. High pressure will build east and off the US east coast veering our winds from north to northeast.
1010 AM EST Sat Dec 3 2016 Low pressure over eastern Canada will move east into the maritimes by tonight. A ridge of high pressure will slowly build into the region by Sunday, before moving offshore Sunday night.
539 AM CST Sat Dec 3 2016 High pressure ridge across the area will move east to northeast today while a weather system approaches from the west. That same warm air will keep highs on Mon and Tues in the low 40s in Central Illinois.
651 AM EST Sat Dec 3 2016 High pressure will build in later today but slide quickly off to the east on Sunday. Low pressure over ME and Canadian Maritimes will move to the east and relax the NW flow - but not until late today and this evening. Still looking for an inch or less for accums on the higher ridges in the NW, and nil elsewhere. Temps will be cooler tonight without so much wind to keep us well-mixed. Just the highest hill tops of the SE may get a dusting. It is a nighttime event, and temps in the nrn tier are much more likely to be sub-freezing all night.
631 AM MST Sat Dec 3 2016 Water vapor imagery showing upper level trof moving across central Colorado at the present time with some drying noted over the Front Range. As the trof sweeps through by daybreak, these lower clouds will also move out of the area. Temperatures will be somewhat warmer today with readings back into the lower 40s with much more sunshine expected. a dry but increase west/northwesterly flow aloft will develop over CO during the day, with the surface lee trough along near the foothills.
1052 AM EST Sat Dec 3 2016 A pocket of showers has been favoring the Atlantic waters near the Lower and Middle Keys, and extending further towards the Straits of Florida. On this date in Keys Weather History, 1978, the high temperature at the Key West International Airport was 86 degrees and set the record maximum for Key West on December 3rd.
Surface observations confirm that relatively dry conditions exist through the lower levels of the atmospheric column.
Some lower stratus and fog has been forming on the west edge of the low cloud deck in central ND this early morning. A low pressure trof will push into the area this evening with areas of light snow possible during the evening and overnight periods.
Stratus is going nowhere until about midnight tonight, when trough axis arrives to clear out the moisture. This precipitation is expected to fall as snow across a majority of the CWA this morning with the exception of south central Kansas where temperatures look to remain above freezing. Lows tonight are anticipated to range from the upper teens along the KS/CO border to around freezing across south central Kansas.
315 AM EST Sun Nov 6 2016 Aviation section updated High pressure over the eastern half of the United States today will head east.
A Rocky Mountain upper trough will lift out into the Plain states through early Monday. drawing up a weak coastal trough. but many more eastern communities may warm up into the lower 80s just before the bulk of the rain/storms pass by.
Temperatures reached record or near record levels this afternoon, with the high temperature reaching 70 at the Duluth airport so far. High pressure should continue to bring clear skies to the region overnight and into Sunday. Overnight lows will range from the upper 30s to the lower 40s for the most part. Sunday is shaping up to be another day of record or near record warmth, with highs once again from 65 to 70 or even a bit warmer in spots. A slight cool down and chance for a few light rain showers arrives with a cold front passage Sunday night into Monday.
300 AM MST SUN Nov 6 2016 Dry north to northwest flow aloft will bring mostly clear skies and unseasonably warmer temperatures to the region this week.
Some isolated light showers will continue across the high terrain this evening. A few light showers have developed this afternoon over NE Arizona, near the core of the upper low currently moving to the northeast into Colorado. The weather over the next 7 days will largely be dominated by a strong ridge developing over the Western US.
Today through Monday night High pressure both on the surface and aloft, remains centered to the east of the state at this time. Water vapor imagery shows an upper low over the four corners area at this time which is in the process of morphing into an open wave. As the wave approaches and the high moves to the east, moisture will be on the increase through the period in the broadly diffluent flow aloft. Rain chances will exist both along the advancing trough and in its base as a piece of upper level energy rotates through.
Seeing the cooler temperatures in the sheltered valleys where winds have gone calm. The axis of the upper level ridge is located just to the west. The weak jet will push off to the southeast with the ridge axis moving into the region. The low level ridge will shift to the east overnight tonight with light southeasterly to southerly winds in the low-levels by daybreak. Therefore, expect overnight lows will be a bit warmer than this morning with lows ranging from upper 30 to upper 40s.
124 AM CST Sun Nov 6 2016 Another quiet morning is underway, with temperatures settling into the low to mid 40s for most, and mid to upper 30s across the far eastern Ozarks.
235 AM MST Sun Nov 6 2016 The area of low pressure has weakened considerably and has now become an open wave or trough with the axis having moved over the Rocky Mountains. Since the system was barotropic as it moved overhead, little cold air advection took place so temperatures will be somewhat warmer than yesterday thanks to less cloud cover or precipitation but no major hot or cold swings are expected. Height rises overnight indicate high pressure building in allowing Monday to be a sunny and warm day.
/issued 443 PM EDT Sat Nov 5 2016/ This afternoon and evening: A decaying cold front is moving through the area as of 4:30 pm. As the ridge strengthens to the north of the area late Sunday into Sunday night, winds will gradually increase out of the east-northeast.
1214 AM EDT Sun Nov 6 2016 A weak trough of low pressure moving across the area is causing some light rain and snow showers for eastern Aroostook to central Penobscot.