Aikyam-Lab/Synoptic-Bench huggingface dataset:
612 AM CDT WED SEP 28 2016 Quiet weather conditions will continue today with noticeably cooler high temperatures. A large upper level low continues to drift southeast across the southern Great Lakes region with a strong vort lobe rotating around the back side of the low. This has allowed a cold front to push into the Central Plains and fairly strong 850mb cold air advection will continue to take place today with 850mb temps falling about 10C in 24 hours. Highs today will range from the lower 60s in our western Iowa counties to the mid to upper 60s in our Nebraska counties. This could impact areas along and east of the Missouri River today which would keep temps a few degrees cooler.
Water vapor satellite imagery shows a deep upper level low spinning over the vicinity of the Great Lakes early this morning, and our forecast area remains on the base of the associated deep upper level trough encompassing much of the eastern CONUS. Surface analysis shows a cold front extending from far southeast LA into southeast MS and northeastward across southwest and central AL early this morning. The upper level low over the Great Lakes region will continue to dig southward across the IL/IN/OH/KY vicinity through tonight, while the associated broad upper level trough encompasses the Ohio/Tennessee Valley regions and central Gulf Coast/Southeast states. The cold front will push offshore tonight, and a much drier deep layer airmass will spread across our forecast area in its wake overnight, with clearing skies and cooler temperatures.
Well, the wait is officially over and we can finally enjoy some fall conditions with cooler temperatures and dry air. The cold front is currently moving very slowly southeastward, and should be clear of all Alabama Counties very shortly. A dry cold front will approach Alabama from the north tonight.
West to southwest winds ahead of the next cold front will result in above normal temperatures today. A deep closed upper low over the Great Lakes region will dig southeast today and send a reinforcing shot of cooler air into central Alabama tonight.
736 AM EDT Wed Sep 28 2016 Low pressure will continue to move northeast away from the region today.
On the synoptic scale the stubborn upper low is finally exiting stage-right, but not without another cloudy day across the Northland. Mid and low-level moisture looks to continue to wrap around the low resulting in mostly cloudy skies today, but less wind today compared to the breezy past two days. Highs will be warmer as the coolest air aloft departs to the east and some breaks in the clouds are possible. Warmer with more sun on Thursday as high pressure continues to build in from the west. High pressure will initially nudge its way into the Upper Midwest from Ontario as a cutoff low rotates along the Ohio River Valley.
A cold front will move across the area causing winds to shift to the north and northeast today.
TFJ A back door cold front moved through Northeast Montana during the night. This will bring cooler temperatures and dry weather to the forecast area today as Canadian high pressure builds into Saskatchewan. Meanwhile, upper ridge will also remain over Eastern Montana today. Temperatures will be somewhat warmer as thermal ridge develops over Montana.
As high pressure continues to dominate, highs today will range from the lower 80s to the upper 80s. For tonight, another push of cooler air will move into West Central Texas, mainly after midnight.
857 AM MDT Wed Sep 28 2016 Sunny skies will prevail today with temperatures about 10 degrees cooler than yesterday. A cold front was working through the forecast area this morning. This front will produce easterly low level flow today and allow high temperatures to be around 10 degrees cooler compared to yesterday.
340 AM PST Sat Jan 14 2017 A low pressure system over central Baja will continue to move slowly eastward with lingering showers ending by early evening. A little warmer today. then a little cooler on Sunday as a weak low pressure system moves southward just off the California coast.
Upper level low will approach South Texas tonight into Sunday.
902 AM EST Sat Jan 14 2017 Ridging continues to dominate the weekend wx pattern. The same upper level pattern that we've seen the past several days will persist into the weekend with a broad upper high spreading across the southeast U. The upper high slightly weakens by Sunday, but not much other change is expected. On the surface, strong high pressure near Bermuda continues to hold a grip on the southeast U. With this high pressure dominating the weather pattern, we can also expect mostly rain free conditions except over the interior counties where we could see a 20-30 percent chance of showers over the next couple of days and above average temperatures through the weekend.
There will be a few hrs late tonight into Sunday morning that we could see light freezing drizzle in southern Indiana, mainly along and north of a Paoli to Madison line. Actually should see a little better recovery on Sunday as a weak warm front lifts through late in the day.
/issued 325 AM EST Sat Jan 14 2017/ Early Saturday morning map analyses showed a dome of high pressure centered over the southeast CONUS bringing deep easterly flow to the Sunshine State.
957 AM EST Sat Jan 14 2017 High pressure remains in control across the Southeast plains through the weekend keeping easterly flow across the area the rest of today. /issued 325 AM EST Sat Jan 14 2017/ Early Saturday morning map analyses showed a dome of high pressure centered over the southeast CONUS bringing deep easterly flow to the Sunshine State.
This threat will be highest after midday, reaching its peak between 3:00-3:00PM with the low tide. Poor boating conditions to continue as a ridge axis over the SE CONUS maintains a moderate to fresh easterly breeze over the lcl Atlc.
Cold front extending along a La Grange to northeastern San Antonio to Mountain Home to Langtry line will sag south to along or little south of the I-10 corridor east of Mountain Home with little or no additional movement west of Mountain Home. Expect a big contrast in temperatures, dewpoints, and winds across our area and especially along the I-10 corridor to the lower Pecos Valley. Showers decrease to isolated this afternoon as the low level jet weakens, then increase again tonight as the low level jet strengthens. The pattern gets more active Sunday as the upper level low currently off the northern Baja California coast moves across northwestern Mexico into western Texas.
The bottom line is, despite relatively light precip expectations for most areas, is that a Winter Weather Advisory was added to the northern flank of the I 70 Freezing Rain Advisory. Other changes included a temporal expansion of the freezing rain advisory given expectations of limited temperature recovery and a trailing surge of precip later this morning and into the afternoon. A deeper trough is progged to develop over the plains for the start of the new week.
656 AM EST Sat Jan 14 2017 A backdoor cold front will stall across South Carolina today and dissipate tonight. Another weak cold front will approach the area for mid week but should stall out nearby through the end of the week keeping conditions unsettled. Today: The backdoor cold front is forecast to stall out over South Carolina, likely before reaching the Savannah River.
1044 AM EST Sat Jan 14 2017 A backdoor cold front will move just south of the area and become diffuse. The front will then move back north on Sunday, bringing a return to some warmer temperatures. An upper ridge over the southeastern part of the country will favor above normal temperatures through mid week.
The ridges remain draped in fog late this morning with visibility still under a quarter mile here at the National Weather Service Office, but visibility is showing an upward trend at other sites, with London even up to 10 miles. While the fog has been dense in a few place, it's mainly been on the taller ridges.
1055 AM EST Sat Jan 14 2017 A backdoor cold front will stall across the area today and dissipate tonight. Another weak cold front will approach the area for mid week but should stall out nearby through the end of the week keeping conditions unsettled. Today: A weak wedge of high pressure will extend across northern areas behind a stalled front near the South Carolina/Georgia state line.
646 AM EST Sat Jan 14 2017 High pressure will keep the majority of the area dry this weekend with seasonal temperatures.
While the fog has been dense in a few place, it's mainly been on the taller ridges.
622 AM EST Sat Jan 14 2017 High pressure over the central Great Lakes will move east today and allow a weak trough of low pressure to move through the lower Ohio valley.
441 AM MST Sat Jan 14 2017 12Z TAF CYCLE Deteriorating conditions are forecast with increasing chances for wet runways and the potential for freezing drizzle/rain at KLVS early Sunday morning. The highest gust currently forecast is 30kts, but 35kts is possible and a short-lived airport weather warning for wind gusts may be required.
An organized cold front comes through mid-week. Colder air to the north inching closer and will brush our northern counties with freezing rain. Drastically decreased amounts in the mountains given the warmer obs, but still have a tenth to two tenths of ice in the farthest east portions of Randolph County. POPs will begin increasing Sunday afternoon as the front oscillates back north as a warm front.
922 AM EST Sat Jan 14 2017 Weak coastal trof pushing onshore the NE FL Atlc Coast this morning and will make its way across North Fl through the day with some light shower activity. Otherwise High pressure north of the region will keep SE GA partly sunny with a mainly dry afternoon there.
608 AM EST Sat Jan 14 2017 High pressure over the central Great Lakes will move east today and allow a weak trough of low pressure to move through the lower Ohio valley.
815 AM EST Sat Jan 14 2017 A cold front is positioned over southern Virginia. A large area of high pressure is moving into northern New York state.
It looks as though conditions will improve to MVFR around 14-17z with some model guidance holding onto the lower conditions even longer.
416 AM CST Sat Jan 14 2017 It will be a quiet short term period with high pressure in control.
354 AM MST Sat Jan 14 2017 The closed low responsible for the clouds and precipitation over the last few days has managed to reach the west coast of the Baja Peninsula at this hour and will continue to drift to the southeast over the next few days. By this evening and into Sunday, the low pressure will have moved to just south of New Mexico and will start moving towards the northeast. The location of the low and easterly flow will start favoring the Colorado Plains and southern portions of the Front Range as our precipitation finally starts winding down.
538 AM EST Sat Jan 14 2017 Relatively cooler high pressure will extend into the Carolinas through the weekend.
Chattanooga Airport, TN 71 52 66 49 / 20 10 20 10 Knoxville McGhee Tyson Airport, TN 68 51 58 47 / 50 40 30 20 Oak Ridge, TN 67 51 58 47 / 50 40 30 20 Tri Cities Airport, TN 64 47 54 44 / 60 60 40 30.
558 AM EST Sat Jan 14 2017 High pressure in place will lead to light and variable winds through the TAF period. So with a little warmer air in the low levels, high temps today will break 30 over much of the area. A little better insolation on Sunday will warrant high temps a degree or two warmer compared to today.
452 AM CST Sat Jan 14 2017 At 4 AM, a weak cold front extended from about Palastine to College Station to San Marcos.
Snow flurries have been reported out of the low cloud cover especially around Flathead Lake, but flurries are possible in any locations with low cloud cover today.
Surface wise, a persistent western Atlantic ridge axis extends across the gulf coast region, with northeast to east winds ranging from 10 to 15 knots on Florida Bay to 20 to 25 knots on the outer waters of the Florida Straits.
Additionally, light freezing rain will be possible at KPVW and KCDS this morning as temperatures hover at or just below freezing. Temperatures are still troublesome during the morning hours with an extention of the subfreezing surface air into the southern Rolling Plains. Warmer near surface temperatures will spread northward today attempting to erode the cool surface air. The main lift from the upper level low will be far off to the west resulting in weaker isentropic lift during the overnight hours. We will undergo more significant height falls during the early morning hours on Sunday as the upper low approaches El Paso. The potent upper low just west of El Paso early Sunday will progress east and northeast during the day, rolling directly across the western South Plains Sunday evening.
1027 AM EST Sat Jan 14 2017 High pressure passes offshore this afternoon with a weak wave of low pressure passing well to the south Saturday night.
Will update all forecasts to reflect the threat of thunder as well as freezing rain. Temperatures across southern Texas Panhandle will likely remain at or below freezing until just after noon. Latest radar trends indicate increasing coverage of rain or freezing rain, which is expected to impact the terminals around 14/14Z. LIFR conditions will occur as freezing rain or rain (dependent on temperature) moves over the terminals AFT 14/14Z.
920 AM EST Sat Jan 14 2017 High pressure over the central Great Lakes will move east today and allow a weak trough of low pressure to move through the lower Ohio valley.
Temp trends support afternoon high temps at CKV/CSV, but are showing temps at BNA and surrounding areas might be a little cooler.
A mix of sleet, snow, and freezing rain was reported at our office despite an area of dry air aloft, as indicated on this mornings sounding. Slick conditions will persist as cold air at the surface battles the warmer air aloft. with values hovering just around freezing with inversion in place. A deeper trough is progged to develop over the plains for the start of the new week.
Temperatures are still troublesome during the morning hours with an extention of the subfreezing surface air into the southern Rolling Plains. Warmer near surface temperatures will spread northward today attempting to erode the cool surface air. The main lift from the upper level low will be far off to the west resulting in weaker isentropic lift during the overnight hours. We will undergo more significant height falls during the early morning hours on Sunday as the upper low approaches El Paso. The potent upper low just west of El Paso early Sunday will progress east and northeast during the day, rolling directly across the western South Plains Sunday evening.
Overnight lows the next few nights may drop down to around freezing in the coolest inland valleys. Although we will see another chilly start to the day, temperatures are a bit of a surprise so far overnight since they are generally running the same or even a bit warmer than last night in many locations. A ridge of high pressure will rebuild into California on Sunday and keep the storm track to our north.
623 AM EST Sat Jan 14 2017 Relatively cooler high pressure will extend into the Carolinas through the weekend.
Latest radar trends indicate increasing coverage of rain or freezing rain, which is expected to impact the terminals around 14/14Z. LIFR conditions will occur as freezing rain or rain (dependent on temperature) moves over the terminals AFT 14/14Z.
525 AM CST Sat Jan 14 2017 It will be a quiet short term period with high pressure in control.
Freezing precip will affect all NE OK sites thru noon, persisting at KBVO thru early Sunday. an area of rain and freezing rain was moving across eastern Oklahoma with all rain in western Arkansas. The surface freezing line extended from Ottawa through central Delaware Co. Temperatures should climb above freezing by mid afternoon across almost the entire forecast area. The highest chance for continued icing through mid afternoon will be near the KS/OK border and through Osage/Pawnee counties. all locations in the forecast area will rise above freezing. the upper low now spinning off Baja. A surface warm front will lift north across the area. Showers and thunderstorms will develop along and ahead of the Pacific cold front.
The upper low near the Baja will begin to eject northeast toward the southern plains tonight into Sunday.
Split flow pattern continues with closed low over Baja California moving inland through the weekend. To the north a series of shallow ridges and trofs will be moving across the Canadian Rockies. Poor mixing anticipated through the weekend with ridge sliding east across the region but should continue to see some moderation of temperatures.
/Issued 403 AM CST Thu Nov 10 2016/ A closed upper low over northern Mexico today will begin lifting north and east across the southern Rockies and West Texas tonight and Friday.
High pressure will continue to bring unseasonably warm and dry conditions through the remainder of the week. Ridge will dominate our weather for the next few days with little day-to-day change.
217 PM EST Thu Nov 10 2016 High pressure will slide south of the area tonight. dry cold front will approach Friday morning and move offshore late Friday. Cool high pressure will build in from the northwest over the weekend.
419 PM EST Thu Nov 10 2016 A cold front will approach from the northwest tonight and move through on Friday. Warm air advection ahead of the front will lead to notable ridge/valley temperature differences overnight. A light breeze will keep the air stirred on ridges, resulting in warmer temps. In light of current dew points, valleys decoupled from the flow should have no trouble plummeting to the lower to mid 30s. Temperatures in the lower to mid 30s are expected just about everywhere on Friday night. Upper level wise we will be met with a meridional pattern before a a stronger upper level ridge build east by the end of the period.
321 PM CST Thu Nov 10 2016 An upper low can be seen on satellite spinning over Northern Mexico this afternoon, providing a steady stream of Pacific moisture and associated high cloudcover northeastward across Central and South Texas. At the surface, a high pressure ridge extends from North Texas into Arkansas. Weak isentropic ascent continues over our far southern counties above the cool high pressure dome, but moisture and lift appear too minimal for anything more than some low clouds and a few sprinkles. A seasonably cool and mostly clear night tonight will give way to mostly sunny and warmer conditions (highs in the mid 70s) Friday.
154 PM EST Thu Nov 10 2016 A cold front will pass through the region Friday bringing the coldest air of the season to the area Friday night with a widespread freeze expected. Lows tonight will bottom out in the low to mid 40s. Mild swrly flow this aftn will swing around to the north late tonight in association with a fast moving cold front trailing from short amplitude trough shifting through srn QB. Southwest flow will continue to ramp up with gusts near 25 knots anticipated in advance of a cold front. This cold front will sweep southeast through KSBN toward midnight and KFWA later tonight.
/issued 425 AM CST Thu Nov 10 2016/ We will keep some cloudiness in the southwest along the northern periphery of the cloud band associated with the cut-off low currently in the Arizona/New Mexico/Chihuahua/Sonora border, but otherwise most areas will see a lot of sun with seasonable temperatures.
1209 PM CST Thu Nov 10 2016 A cold front at 3 am was just entering NW MN. Southwest winds ahead of the front have kept temperatures very mild, with most locations remaining in the 40s, with areas immediately downwind of the Buffalo Ridge, like Canby and Marshall staying in the 50s. Unfortunately, the cold front will be moving through pretty quick, with it pretty much clear of the entire MPX by around 18z. Tonight, CAA from the day will continue right through the night as high pressure builds into the Dakotas. This cloud cover would be associated with a lobe of vorticity rotating around a closed low over northern Quebec. As mentioned above, cooler air behind the front will drop temperatures back tomorrow - with highs likely remaining in the the mid to upper 40s across MN/WI.
1030 AM MST Thu Nov 10 2016 A cold front will continue to sweep across southeast Wyoming early this morning. Moderate pressure rises were spreading into Converse county at 10z, so we believe the cold front is likely located near Douglas at this hour.
1116 AM CST Thu Nov 10 2016 Quiet conditions reign across the region early this morning, with upper air and satellite continuing to show ridging being the main feature for us, while the cut off low continues to spin over the border along the desert SW and Mexico. At the surface, southwesterly winds are in place across the area, ahead of a trough axis extending through western portions of the Plains. No precipitation is expected as this disturbance slides off to the north, but an accompanying surface cold front will push through much of the CWA during the daytime hours today.
310 PM CST Thu Nov 10 2016 Afternoon water vapor imagery shows an upper low churning near the New Mexico bootheel, with southwest flow aloft around this feature channeling Pacific moisture in the form of mid and high clouds across Southeast Texas.
322 PM EST Thu Nov 10 2016 A Canadian cold front will bring a few light showers to NY and PA later tonight and Friday morning.
1042 AM MST Thu Nov 10 2016 The upper level high over low block remains mostly intact over the over southern and central Rockies and high plains regions from today through Friday night.
240 PM CST Thu Nov 10 2016 Our breezy northerly winds gusting to 20-25kts will quickly diminish with the loss of daytime heating, as cool/dry high pressure builds in from the northwest. Continued to go on the low side, or even lower than guidance for temps tonight as PW values fall to around 0.
Cold frontal passage will cause h850 temps to drop into the mid single digits by Friday afternoon, but late arrival of the thermal trough will lead to a delayed response in temperatures. Aggressive building of the surface anticyclone will scour out clouds Friday night, but the gradient may be borderline strong enough to prevent decoupling. Quiet weather dominates through the remainder of the work week as high pressure takes hold.
147 PM MST Thu Nov 10 2016 Latest upper air analysis shows the cut-off low nearly stationary over Northern Mexico with a ridge arching over the Intermountain West. At the surface a cold front was over the Northern Plains accompanying a subtle upper level short wave trough southward. Behind the trough winds had turned to the north and were breezy at times. Tonight the cold front will move through the area. Highs will be 15-20 degrees cooler than today.
An upper level ridge of high pressure over the region today will allow for sunny skies, light winds and mild temperatures. Upper level high-pressure ridge remains over the Northern Rocky Mountain region through early Friday morning.
Issued by National Weather Service STATE COLLEGE PA 155 PM EST Thu Nov 10 2016 A Canadian cold front will bring a few light showers to NY and PA later tonight and Friday morning.
High clouds will start to spread across the area from the west late tonight as the upper ridge over the north central Gulf and Southern Plains breaks down and southern stream jet moisture edges toward the area. Light westerly surface winds will prevail ahead of the next cold front.
Another mild day anticipated across the area as ridge remains the influencing system across the area. An upper ridge axis over the area today tilts eastward on Friday in response to an upper wave approaching the Oregon coast. Besides an increase in high cloud cover will also see surface winds pickup on Friday as winds aloft mix to the higher terrain, and lower elevations respond to a tightening surface pressure gradient.
High pressure surface and aloft will keep plenty of subsidence in place and pleasant weather across the area this afternoon with a few strands of fibratus working across at times. Strong subsidence underneath upper ridge across the area will keep skies clear next 24 hours and with a weak surface pressure gradient light winds.