Aikyam-Lab/Synoptic-Bench huggingface dataset:
303 PM CDT Sat Oct 12 2019 Impressive cut off upper level low very pronounced on satellite imagery spinning over northern MN as of mid afternoon with warm conveyor belt wrapping around the back side. Area webcams have shown that warmer ground temperatures have largely tempered any snow accumulations thus far, although reduced visibility has certainly been noted. By this evening, upper low slowly wobbles away from the region and will allow the surface pressure gradient to slacken and thus winds diminish some overnight.
1243 PM EDT Sat Oct 12 2019 Dry conditions are expected until a midweek cold front crosses the region. Cooler dry air will continue to invade the region through the afternoon in the wake of the morning cold front. Cloud cover will rapidly clear out this afternoon with building high pressure.
A broad inverted trough axis will move westward through the Straits and across the Keys tonight and Sunday morning. Radar and satellite loops indicated that the trough axis is currently over the eastern Straits between the Upper Keys and Cay Sal Bank, as indicated by faint cyclonic motion in the cloud and precip fields. The heaviest concentration of convection coincides with the trough axis, with plenty more convective activity for the Middle and Lower Keys overnight. These are also the highest readings in about 4 days. This will continue to produce minor coastal flooding for the Lower/Middle Keys during high tides, with more persistent and significant flooding for the Upper Keys. From synopsis, high pressure near the U.
An upper level ridge of high pressure will reside over the region through Sunday.
Deep upper cyclone continues to dominate the central portions of the CONUS with westerly flow this far south allowing for a quick return of modified dry air into the central Plains. Water vapor imagery shows one stronger wave rotating around the southwest side of the upper low which will help bring a modest boundary into the area late tonight into Sunday.
809 PM MDT Sat Oct 12 2019 Tonight will remain mostly clear and dry, under high pressure aloft. Upper high pressure will dominate the weather over the Northern Rockies tonight through Sunday with dry conditions.
1046 PM EDT Sat Oct 12 2019 Clearing behind a cold front will lead to chilly temperatures Sunday morning, with a frost advisory in effect for much of northern Pennsylvania.
834 PM EDT Sat Oct 12 2019 High pressure moving off the southeast U. High pressure to the northeast of the Gulf waters will maintain east winds around 10 knots near shore and 10 to 15 knots offshore with seas of 2 to 3 feet the remainder of tonight and through Sunday.
The cold front that moved across the area about a day ago was well to the east and south of this region, extending south of SC Upstate, to south of Macon and Pensacola.
In addition, moderating/warmer temperatures(when compared to previous couple of nights) are anticipated with projected minimum temperatures primarily in the 24F to 30F range over eastern locations and teens over the San Luis Valley and western mountains. For Sunday, upper flow becomes zonal to southwesterly as transitory upper ridge moves across New Mexico. Also, weak eastern Colorado surface lee-side troughing is expected to develop as Sunday progresses. This pattern will allow dry conditions to continue in combination with warmer maximum temperatures(climbing to above mid- October climatological average over most locations).
Given a lack of rising motion with the stratus, and ceilings greater than 1000 ft, will de-emphasize the freezing drizzle potential at this time. Will have to monitor for freezing drizzle potential across central North Dakota under the stratus tonight with ice loss in the column. Since the trowel (trough of warm air aloft) will remain over the region, but in a diminished role, there will be a chance for light snow through the night. As dryer air infiltrates the mid layers, there could be a brief period of freezing drizzle tonight. We added some lake effect flurries south of lake Sakakawea with the cold air moving across the warmer waters of teh lake. Otherwise highs Sunday over the snow covered areas will be in the lower 30s, to the mid 40s west.
632 PM CDT Sat Oct 12 2019 Deep upper low is currently spinning over northeast MN. Upper low will finally start to push east on Sun into the northern Great Lakes region. For Mon, this will result in increased Lee troughing and return flow, allowing for highs to warm into the 70s region wide. The southern stream impulse is expected to bring widespread rainfall to the eastern TX into the Lower Mississippi Valley Tue. Meanwhile, the northern stream impulse will track over the northern Plains Mon night into Tue and will push another cold front through the area. Cold front will knock temps back into the 60s for both Tue and especially Wed.
Cooler temperatures and a more active pattern are anticipated late in the upcoming week.
626 PM CDT Sat Oct 12 2019 The upper low continues to rotate over Minnesota today. The stratus deck will linger across the area on Sunday, with scattered flurries/sprinkles remaining possible as long as the low clouds are around in the cyclonic flow regime. This would yield slightly cooler lows in the upper 20s there, with low 30s again in other areas.
752 PM EDT Sat Oct 12 2019 Clearing behind a cold front will lead to chilly temperatures by Sunday morning, with a frost advisory in effect for much of northern Pennsylvania.
The ridge axis is expected to be east of the forecast area by midnight, with an increasing southwest flow. A weak cold front is still indicated for tomorrow night though models continue to weaken its impact.
Temperatures will remain near to slightly above normal for most of the coming week with highs generally in the upper 80s to lower 90s across the lower deserts. Today's satellite imagery shows clear skies across the region with only a few cu in the higher elevations of the far E to SE part of AZ. Also temperatures were running several degrees warmer than yesterday. Expect seasonably warm temperatures to reach the upper 80s to low 90s today around Phoenix and the lower deserts, and the mid to upper 80s across SE CA to SW AZ as a very weak upper level wave traverses the area in the west-southwesterly dry subtropical flow aloft. Expect near to slightly above normal warm temperatures for most of this week to continue with highs reaching the upper 80s to low 90s in the lower deserts.
741 PM EDT Sat Oct 12 2019 Dry conditions are expected until a midweek cold front crosses the region. A few isolated regions may fall below freezing, however sustained light winds may help diminish the chances for a sfc freeze to occur. Lingering high pressure over Eastern PA will continue to keep conditions dry and quiet.
In addition, moderating/warmer temperatures(when compared to previous couple of nights) are anticipated with projected minimum temperatures primarily in the 24F to 30F range over eastern locations, with teens over the San Luis Valley and western mountains. For Sunday, dry upper flow becomes zonal to southwesterly as transitory upper ridge moves across New Mexico. Also, weak eastern Colorado surface lee-side troughing is expected to develop as Sunday progresses. This pattern will allow dry conditions to continue over southern Colorado in combination with warmer maximum temperatures(climbing to above mid-October climatological average over most locations).
648 PM CDT Sat Oct 12 2019 A powerful closed upper low continues to spin across northern Minnesota leaving our area in fast northwesterly flow aloft.
504 PM MDT Sat Oct 12 2019 The low pressure system continues its slow trek towards the Great Lakes.
705 PM CDT Sat Oct 12 2019 Upper low in NE MN. Some drier air working southwest and south around the low has produced some clearing in nrn MN and parts of the nrn RRV.
Surface analysis this evening places a 1021 mb ridge of high pressure centered over the Mid-South.
605 PM CDT Sat Oct 12 2019 The deep upper level low over the Great Lakes region will move slowly east over the next 24 hours. After the Ozarks saw widespread temperatures at or below freezing for multiple hours last night along with a significant heavy frost, the growing season has effectively ended.
705 PM EDT Sat Oct 12 2019 Surface analysis this afternoon reveals the strong cold front that has brought us our chilly airmass is pushing past the Appalachian Mountains. Surface flow will pick up out of the south with high pressure to the east and afternoon highs will climb into the mid and upper 60s under clear skies. As the low pressure system moves east flow over the CWA will become more zonal before another stacked low pressure system slides south over the Great Lakes from Saskatchewan, Canada.
Will have to monitor for freezing drizzle potential across central North Dakota under the stratus tonight with ice loss in the column. Since the trowel (trough of warm air aloft) will remain over the region, but in a diminished role, there will be a chance for light snow through the night. As dryer air infiltrates the mid layers, there could be a brief period of freezing drizzle tonight. We added some lake effect flurries south of lake Sakakawea with the cold air moving across the warmer waters of teh lake. Otherwise highs Sunday over the snow covered areas will be in the lower 30s, to the mid 40s west.
536 PM MDT Sat Oct 12 2019 Dry northwest flow aloft will become more zonal Sunday, then southwesterly by Sunday night as a deamplifying upper level ridge moves across the region. Temperatures will also warm through the period, with highs Sunday several degrees warmer than today and close to normal for this time of year.
632 PM CDT Sat Oct 12 2019 Impressive cut off upper level low very pronounced on satellite imagery spinning over northern MN as of mid afternoon with warm conveyor belt wrapping around the back side. Area webcams have shown that warmer ground temperatures have largely tempered any snow accumulations thus far, although reduced visibility has certainly been noted. By this evening, upper low slowly wobbles away from the region and will allow the surface pressure gradient to slacken and thus winds diminish some overnight.
1025 PM EDT Sat Oct 12 2019 Clearing behind a cold front will lead to chilly temperatures by Sunday morning, with a frost advisory in effect for much of northern Pennsylvania.
Meanwhile, snow/rain mix nearer to the upper low over northern MN/WI is expected to continue overnight. Low pressure centered over northeast Minnesota will continue to edge east tonight. With temperatures right around the freezing mark and warm ground temperatures, the snow won't be around for long. Plan on lows tonight falling into the lower 30s, but with the winds, not expecting frost formation and with last nights lows falling to around the same values, will not issue any frost freeze headlines at this time. Low pressure continues to meander east into southern Ontario on Sunday with continued chances for rain and snow showers, mainly across western and central Wisconsin. Cool temperatures continue on Sunday with highs in the lower to mid 40s.
736 PM PDT Sat Oct 12 2019 A weak cold front will bring spotty light showers to the northern mountains and Idaho panhandle through Sunday.
An upper level trough will move through the region tonight and Sunday, spawning a few showers.
Otherwise, weak ridging over the area will keep fair weather and mild temperatures through the weekend. An approaching trough will increase the winds some Sunday afternoon.
/issued 224 PM CDT Sat Oct 12 2019/ An upper low/trough is centered over northern Minnesota with westerly flow over West Texas and southeast New Mexico. The center of the upper low/trough will move into Canada on Sunday as another upper trough moves over the west coast.
Given latest temp/dew-point trends, lowered temperatures a few degrees overnight, especially in the lower terrain areas of SE OK and the normally colder locations of FYV/BVO, including portions of Creek county.
VFR conditions will prevail at all sites through this forecast period as the Southern Plains remains under the influence of weak ridging between strong ern CONUS low pressure system and digging trough off the CA coast. Given latest temp/dew-point trends, lowered temperatures a few degrees overnight, especially in the lower terrain areas of SE OK and the normally colder locations of FYV/BVO, including portions of Creek county.
307 AM CDT Sun Oct 13 2019 An upper level low is currently over the Great Lakes region with the trough extending to the south. South of the upper level low, southwesterly winds will occur today with gusts up to 20 mph possible at times. Lows this morning will be in the middle 30s to the lower 40s, with the coldest readings across south central Missouri. The upper level low will lift off to the northeast early this week allowing an upper level ridge to build towards the area.
The strong upper level low will remain to the north throughout the day providing enough forcing for some showers for much of the day. Other than the PVA from the upper level low the forcing will remain mostly weak likely not producing much more than some scattered showers, primarily through the afternoon. Into the evening we may clear out a bit perhaps allowing temperatures overnight to fall below freezing for most of southern Wisconsin.
333 AM CDT Sun Oct 13 2019 Large intense upper level low pressure system is centered across the northern Great Lakes region this morning. Otherwise dry air in place in the lower levels and up through the mid and upper levels so expect lots of sunshine. Weak cold air advection will continue across north central Nebraska where highs will mainly be in the lower 50s. Winds will turn light south across the area on the back side of the highs.
358 AM EDT Sun Oct 13 2019 Current surface analysis shows high pressure to the northeast of Kentucky and a low pressure system over northern Minnesota into the upper Great Lakes. Meanwhile, a closed upper level low continues to dominate the upper Great Lakes region.
May see some lingering snow showers on the backside of it early this morning, then conditions will dry out as high pressure settles in over the Northern Plains.
127 AM EDT Sun Oct 13 2019 VFR through the vast majority of the taf cycle, with the exception of MVFR cigs at TRI this morning as moisture remains trapped beneath an inversion just west of the high terrain. Otherwise, high pressure will slide east allowing flow to back swly/sly at all sites on Sunday, all amidst a few mid/high clouds.
Surface analysis this afternoon reveals the strong cold front that has brought us our chilly airmass is pushing past the Appalachian Mountains. Surface flow will pick up out of the south with high pressure to the east and afternoon highs will climb into the mid and upper 60s under clear skies. As the low pressure system moves east flow over the CWA will become more zonal before another stacked low pressure system slides south over the Great Lakes from Saskatchewan, Canada.
1216 AM EDT Sun Oct 13 2019 Dry conditions are expected until a midweek cold front crosses the region. Lingering high pressure over Eastern PA will continue to keep conditions dry and quiet.
348 AM CDT Sun Oct 13 2019 Fast northwesterly flow continues across the area as directed by the closed low over the Great Lakes and Ontario. As high pressure settles in on Sunday night, calm winds develop as temps dip into the 20s north and 30s south.
1036 PM CDT Sat Oct 12 2019 Deep upper low is currently spinning over northeast MN. Upper low will finally start to push east on Sun into the northern Great Lakes region. For Mon, this will result in increased Lee troughing and return flow, allowing for highs to warm into the 70s region wide. The southern stream impulse is expected to bring widespread rainfall to the eastern TX into the Lower Mississippi Valley Tue. Meanwhile, the northern stream impulse will track over the northern Plains Mon night into Tue and will push another cold front through the area. Cold front will knock temps back into the 60s for both Tue and especially Wed.
with most locations topping out in the lower to middle 60s.
1103 PM CDT Sat Oct 12 2019 Impressive cut off upper level low very pronounced on satellite imagery spinning over northern MN as of mid afternoon with warm conveyor belt wrapping around the back side. Area webcams have shown that warmer ground temperatures have largely tempered any snow accumulations thus far, although reduced visibility has certainly been noted. By this evening, upper low slowly wobbles away from the region and will allow the surface pressure gradient to slacken and thus winds diminish some overnight.
948 PM MDT Sat Oct 12 2019 The low pressure system continues its slow trek towards the Great Lakes.
500 AM EDT Sun Oct 13 2019 Several days of dry weather are expected across Central Pennsylvania thanks to high pressure and a dry prevailing west northwest flow of air aloft.
1115 PM MDT Sat Oct 12 2019 Dry northwest flow aloft will become more zonal Sunday, then southwesterly by Sunday night as a deamplifying upper level ridge moves across the region. Temperatures will also warm through the period, with highs Sunday several degrees warmer than today and close to normal for this time of year.
Low temps appear in the ball park and are forecast to fall into the 30s with 20s across the higher elevations.
Mild conditions are expected today as a weak trough axis lies across the state. 850-hPa temperatures will warm into the lower teens and therefore highs mainly in the 70s still look on track.
Today will be similar to yesterday with clear skies and highs in the upper 50s to upper 60s, but with weaker wind gusts as high pressure moves overhead.
209 AM EDT Sun Oct 13 2019 Clearing behind a cold front will lead to chilly temperatures Sunday morning, with a frost advisory in effect for much of northern Pennsylvania.
Upper high pressure shifting east and weakening across Montana and Wyoming today with a continuing of the drying trend. Wave moving from BC into Alberta overnight starts causing height falls over the region with a broad leeside trough beginning to form.
The upper pattern this morning continues to be dominated by the broad cyclone over the Great Lakes and subsequent troughing stretching southward into the TN Valley. At the surface, high pressure continues to hold over the southeast CONUS, west of the old front which is now stationary atop the Carolinas and north Georgia.
318 AM CDT Sun Oct 13 2019 A weak cold front currently in the vicinity of the Iowa-Missouri border will slowly move southward today, oozing through the northern CWA this afternoon.
239 AM CDT Sun Oct 13 2019 A powerful upper level low continues to slowly move through the Great Lakes region. The orientation of this upper low is preventing any significant return flow to establish itself over the region. The orientation of the upper low is not however, preventing WAA from establishing itself.
Winds decrease tonight after sunset, allowing temperatures to again fall below freezing.
322 AM CDT Sun Oct 13 2019 Early morning temperatures are running slightly cooler than last night with most of the Midsouth in the upper 30s to middle 40s. During he same time frame a trough will deepen over the Desert Southwest.
112 AM EDT Sun Oct 13 2019 Clearing behind a cold front will lead to chilly temperatures Sunday morning, with a frost advisory in effect for much of northern Pennsylvania.
1055 PM CDT Sat Oct 12 2019 The upper low continues to rotate over Minnesota today. The stratus deck will linger across the area on Sunday, with scattered flurries/sprinkles remaining possible as long as the low clouds are around in the cyclonic flow regime. This would yield slightly cooler lows in the upper 20s there, with low 30s again in other areas.
/issued 834 PM EDT Sat Oct 12 2019/ High pressure moving off the southeast U. High pressure to the northeast of the Gulf waters will maintain east winds around 10 knots near shore and 10 to 15 knots offshore with seas of 2 to 3 feet the remainder of tonight and through Sunday.
The upper level ridge axis will be over western CO this afternoon with a west to northwesterly flow aloft. An upper level trough moving along the U.
1200 AM CDT Sun Oct 13 2019 The deep upper level low over the Great Lakes region will move slowly east over the next 24 hours. After the Ozarks saw widespread temperatures at or below freezing for multiple hours last night along with a significant heavy frost, the growing season has effectively ended.
1025 PM PDT Sat Oct 12 2019 A weak cold front will bring spotty light showers to the northern mountains and Idaho panhandle through Sunday.
242 AM MDT Sun Oct 13 2019 Slight ridging is overhead today, which will lead to a sunny but cool day for mid-October.
Afternoon highs will generally be around 60 into the lower 60s along I-80 to the mid 60s over northern Kansas.
528 AM CDT Sun Oct 13 2019 An upper level low is currently over the Great Lakes region with the trough extending to the south. South of the upper level low, southwesterly winds will occur today with gusts up to 20 mph possible at times. Lows this morning will be in the middle 30s to the lower 40s, with the coldest readings across south central Missouri. The upper level low will lift off to the northeast early this week allowing an upper level ridge to build towards the area. This will allow warmer conditions to occur on Monday as highs top out in the lower to middle 70s.
640 AM EDT Sun Oct 13 2019 VFR through the taf cycle at all sites aside for TRI as current MVFR cigs will linger into mid/late morning as moisture remains trapped beneath an inversion just west of the high terrain. Otherwise, high pressure will slide east allowing flow to back swly/sly at all sites on Sunday, all amidst a few mid/high clouds.
which will allow for some slightly warmer conditions overnight tonight into Mon morning. with a warm front lifting north over AR.
Dry weather will continue across central Indiana through Monday night with high pressure in control for much of that time.
543 AM EDT Sun Oct 13 2019 Several days of dry weather are expected across Central Pennsylvania thanks to high pressure and a dry prevailing west northwest flow of air aloft.
A weak trough is moving across the area early this morning, resulting in scattered light showers generally along and north of I-10. The trough will continue to move east and the showers should exit the area by 15Z.
513 AM MDT Sun Oct 13 2019 Quiet weather remains in place today as a quick moving, transitory ridge moves through ahead of a trough further to the west. Winds will become more southwesterly thanks to the approaching trough which will allow high temperatures to be a bit warmer than seen yesterday. On Monday, the aforementioned trough will move through the area but with no moisture tap or any real moisture to speak of, all we'll see will be a few high clouds and some gusty surface winds as the trough passes.
Winds decrease tonight after sunset, allowing temperatures to again fall below freezing. Temperatures Monday afternoon will return to within 10 degrees of average as southerly warm air advection occurs in the low levels.
Near average temperatures, then cooler than normal temperatures mid to late week. A short wave trough will be pushing into NorCal today. No rain is expected with this trough but it will bring some cloud cover to the area. The trough pushes to the east on Monday and we will see a ridge build in.
/issued 322 AM CDT Sun Oct 13 2019/ Early morning temperatures are running slightly cooler than last night with most of the Midsouth in the upper 30s to middle 40s. During he same time frame a trough will deepen over the Desert Southwest. Overnight lows should should be in the 40s Monday morning with high temperatures Monday in the low to middle 70s.
Areas that see more clear skies should see temperatures warm into the low and potentially the mid 80s. Increasing clouds expected overnight tonight with warmer lows in the 50s.
Dry and mild, and breezy conditions return through mid-week as a broad and high amplitude ridge develops over the region.