Aikyam-Lab/Synoptic-Bench huggingface dataset:
316 AM EDT Thu Jul 6 2017 Series of upper level waves/disturbances coming down from Canada leading to lowering heights and longwave trough setting up East of the Mississippi over the Weekend. Strung out (SW-NE aligned) moisture over Wisconsin this morning to seep into southeast Michigan during the day, but the upper level disturbance coming out of North Dakota expected to track through/near the Straights, calling into question how much activity will extend south into southeast Michigan (see 6z RAP13) as the cold front begins to accelerate off to the southeast Tonight.
Upper level high pressure ridge centered near the Four-Corners with deep northeast flow aloft across the area. 3 pm observations show that area temperatures are running about 2 to 10 degrees cooler than at this time yesterday (coolest in the southwest) and dewpoint temps were about 3-5 degrees cooler, and as such surface-based instability has waned. There is some low-level convergence in that area and there is also a weak convective signal in some of the high-res guidance. Upper-ridge centered over the 4-corners will broaden over the southern plains Thursday into Friday and effectively shut down precip.
Regional radar reveals low pressure spinning in Missouri, with scattered showers spiraling around it. A slow-moving closed low over Missouri today will weaken as it drifts eastward tonight and Thursday, to a position along the Ohio Valley tomorrow afternoon. Then we should dry out and cool down slightly for the weekend, as high pressure moves across the Ohio Valley.
305 AM PDT Thu Jul 6 2017 Temperatures will heat up through the weekend as a ridge of high pressure strengthens. We will remain between a four-corners high and an upper low over the Gulf of Alaska heading into the weekend. The upper level pattern will be slow to evolve but will eventually lead to the ridge building westward with highs increasing into the weekend.
An upper ridge will remain oriented over the Rockies on Friday while an upper trough translates through the Upper Midwest and Great Lakes regions. Friday night the easterly low level/upslope flow is expected to initiate convection to our west along the high plains and this activity is forecast to migrate southeast in the northwest flow pattern aloft. Into the first part of the weekend, the upper ridge axis will remain oriented over the Rockies maintaining the northwest flow regime across the Central Plains.
134 AM EDT Thu Jul 6 2017 A dissipating low will move east into central Ohio Thursday then a cold front will cross the region Friday into Friday night.
High pressure will strengthen across the region the next few days as the Southwest high extends westward. The result will be warmer temperatures across interior NorCal with little marine influence making it inland as the marine layer remains shallow.
However, more storm development associated with the Ohio Valley upper low could keep the airports on watch for active weather in the 00-06z period at the end of the forecast.
A cold front late Friday will bring cooler and drier air for the weekend. If this depiction is correct, the highest threat for heavy rainfall, would generally be over the southern half of the area. The surface wave over Ohio will be driven southward, then eastward tonight as the upper level trough swings through. By Friday morning, the upper level trough will move into Central Pennsylvania, in turn pushing the surface wave toward Eastern Maryland. The lull will be short lived as a cold front will move toward the area late Friday, crossing Friday night.
At the surface, the sub-tropical ridge that's setup over northern Florida will get pushed slightly southeast by the incoming trough, but the forecast area will remain under the effects of the ridge through the rest of the week, with light gradient winds allowing for well defined sea breeze circulations.
402 PM CST Sun Jan 28 2018 Strong cold air advection associated with a passing cold front has been observed across the local area today. the low clouds are expected to clear this evening with mainly passing thin cirrus expected overnight. expect temperatures to warm up to near freezing by early afternoon as todays cold front eventually begins lifting northeast late in the day.
This disrupted the low that was expected to develop out over the northeast Gulf of Mexico and really zapped the upper level energy across our area, thus resulting in rainfall being much less organized and not nearly as heavy as expected. Winds will veer to the west northwest late tonight into Monday behind a cold front. South southeast winds 15 to 25 knots tonight will veer to the northwest on Monday behind a cold front.
The upper ridge will flatten on Monday, but the dry weather and above normal temperatures will prevail.
Brisk southerly flow thru the H100-H70 lyr as a cold front over the ern GOMEX interacts with a deep high pres ridge extending from Bermuda to the FL Straits. Moderate to strong dynamic support thru the column ahead of the approaching cold front. Poor/hazardous boating conds cont overnight as high pres over the SW Atlc retreats seaward in advance of a cold front pushing into the ern GOMex/FL Panhandle.
A ridge will generally prevail over the Great Basin through this upcoming week, with one exception.
The sfc analysis also depicts a cold front extending from near TUL to just SE of OKC, to NW of SPS, associated with the longwave trough axis extending from the Midwest SW into NW AR/Ern OK, which will drop SE into the MS Valley by daybreak Monday. Lgt northerly winds overnight becmg nw btwn 30/15-18z 15 to 20 kts at ktyr, kggg, and kshv, and 10 to 15 kts at ktxk,keld,kmlu, and klfk thru the aftn hours with a the passage of a weak reinforcing cold front into already dry airmass.
The cold front (or actually the initial wind shift) continues to move southeastward this evening. A wind shift from the north will continue through the late evening hours behind a cold front.
700 PM EST Sun Jan 28 2018 Fair weather will continue through Monday under the influence of a weak ridge of high pressure.
The area of low pressure is now located just off the west coast of Florida and will continue to track east over Florida for the next 12 hours. As the area of low pressure and associated front moves off the east coast later tonight into early Monday morning, rain chances will continue to decrease by mid- morning on Monday, with all rain clearing the area by Monday afternoon.
Should become fairly light overnight tonight, but as high pressure begins to impinge on the region from the far north, the pressure gradient and the winds should pick up into the 10 to 15 knot range in the afternoon.
/issued 311 PM CST Sun Jan 28 2018/ Upper level trough is pushing east of the forecast area this afternoon. Deeper northerly flow is developing behind the upper level trough and this is helping to mix out the cloud cover making for a nice Sunday in late January. Water vapor shows a northern stream short wave moving across the upper MidWest, with an associated Canadian cold front from the Mid-Mississippi Valley to the Central Plains. A secondary surface cold front of Canadian origin will move across the forecast area during the daytime Monday.
1046 PM EST Sun Jan 28 2018 A cold front will drop south into the area this evening, producing a few showers. Weak sfc cold front has pushed south of the Champlain Valley with a light northerly wind shift (350/05kt at BTV) with the frontal passage. Otherwise, generally looking at OVC 4-6kft layer and the light wind shift as the main effects of the cold front. Models continue to indicate low pressure developing off the Carolinas will trek further out to sea, remaining east of the benchmark.
721 PM EST Sun Jan 28 2018 Fair weather will continue through Monday under the influence of a weak ridge of high pressure.
Initial conditions are LIFR, and the low cigs will be slow to erode, if at all.
High pressure from southern Saskatchewan and Manitoba into central and eastern ND will continue to slide southeast overnight. A mostly clear sky except southwest ND, where light snow in the far southwest is beginning to wane, as a 130kt jet streak atop a surface trof and baroclinic zone shifts farther away.
632 PM EST Sun Jan 28 2018 A cold front will drop south into the area this evening, producing a few showers. A cold front will cross the region this evening. Models continue to indicate low pressure developing off the Carolinas will trek further out to sea, remaining east of the benchmark.
428 PM MST Sun Jan 28 2018 Latest analysis shows the upper trough that brought light snow to parts of the area today is shifting off to the east and the western CONUS ridge builds eastward. Flurries will remain possible over parts of western and central SD into the early evening but then synoptic scale subsidence associated with the upper trough building in from the west should bring an end to any precipitation for the rest of the night.
Northerly winds in the lower levels backed to the northwest and then west in the mid levels. Upper trough axis should pass through the area early this evening with clouds clearing by mid to late evening.
A strong cold front will move through late Monday and bring much colder air to the region. With northwest winds in the wake of the front, 850 mb troughing, and sufficient low-level moisture, a northwest-flow snowfall event seems likely across the higher elevations on Monday night with 1 to 3 inches of snow accumulation appearing possible.
A ridge of high pressure is peaking over the area today. Temperatures will continue to be much warmer than normal the next several days.
A weak area of low pressure over southwest SD is producing light snow west of the CWA. High pressure building into the region from the north will bring cold temperatures tonight with lows in the single digits on either of zero. The cold high pressure will keep temps in western MN from climbing very much.
706 PM EST Sun Jan 28 2018 A cold front will drop south into the area this evening, producing a few showers. Weak sfc cold front has reached the Intl. Generally looking at OVC 4-6kft layer and the light wind shift as the main effects of the cold front. Models continue to indicate low pressure developing off the Carolinas will trek further out to sea, remaining east of the benchmark.
630 PM EST Sun Jan 28 2018 A cold front will begin to move across the region tonight with much colder air arriving to start Monday.
549 PM CST Sun Jan 28 2018 A weak cold front is entering northwest Arkansas at this time.
527 PM CST Sun Jan 28 2018 High pressure over the region will keep skies clear at all area airports through this TAF period. In the upper levels, Deep north and northwest flow over TX is associated with an upper trof over the upper midwest. This trof will move east toward the east coast keeping us in the extended downsloping and dry NW upper-level flow for the first part of the work week. At the surface, high pressure will continue to build down into the state giving us continued cool conditions and low humidities.
653 PM CST Sun Jan 28 2018 High pressure from southern Saskatchewan and Manitoba into central and eastern ND will continue to slide southeast overnight. A mostly clear sky except southwest ND, where light snow in the far southwest is beginning to wane, as a 130kt jet streak atop a surface trof and baroclinic zone shifts farther away.
A second push of high pressure will move through Monday with the pressure gradient tightening along the coast. Cooler night is in store for Monday night as the high pressure ridge axis will be situated just north of the area. High pressure building into the coastal waters will lead to an increase in offshore flow before daybreak with winds rising up to SCA levels again. But, hi-res models along with the SREF model indicate another surge in high pressure will arrive Monday night.
The overriding moisture along the boundary may generate light snow, maybe with a little freezing rain by morning. Many models and BUFKIT soundings show an intrusion of warm air aloft ahead of a warm front expected to move through later tomorrow. This warm air may be sufficient enough to allow some melting of falling ice particles, and with surface temperatures still expected to be below freezing, mixed precipitation will be possible.
504 PM CST Sun Jan 28 2018 A cold front will shift into the Ozarks from the north late this afternoon and this evening.
1041 PM EST Sun Jan 28 2018 Fair weather will continue through Monday under the influence of a weak ridge of high pressure.
1022 PM EST Sun Jan 28 2018 Fair weather will continue through Monday under the influence of a weak ridge of high pressure.
An upper ridge axis moves into western Colorado by 00Z Monday late. For temperatures readings look 2-4 C warmer on Monday compared to today's.
However, a cold front will shift light winds to the north within the next hour or so. However, expanding our view, much colder air has invaded the Midwest as a cold Canadian high pressure was advancing southeastward.
239 PM PST Sun Jan 28 2018 High pressure aloft and strong and gusty Santa Ana winds will bring very warm temperatures through Monday.
531 PM CST Sun Jan 28 2018 Strong cold air advection associated with a passing cold front has been observed across the local area today. the low clouds are expected to clear this evening with mainly passing thin cirrus expected overnight. expect temperatures to warm up to near freezing by early afternoon as todays cold front eventually begins lifting northeast late in the day.
02 UTC surface analysis shows the cold front moving into the western half of the forecast area. 9 micron satellite imagery shows an extensive area of low cloudiness back behind the cold front, so expect low cloudiness to be in place by daybreak on Monday. Even though the cold front will likely move through the entire area overnight, not much cool air will arrive until late Monday.
546 PM CST Sun Jan 28 2018 A ridge of high pressure that was centered across south central Canada this afternoon, will continue to build southeast across the Upper Midwest through Monday night. Temperatures overnight are dependent on the amount of cloud cover continuing, which means if less cloud cover occurs, temperatures will be several degrees cooler than forecast.
Cold front has cleared the mid state as we head into the afternoon. Cooler air will sink into Middle Tennessee overnight, with temperatures settling well into the 30's by tomorrow morning.
High pressure ridging in the western Atlantic remains impressive driving the fresh southeast winds across the Keys.
The cold front that moved through last night is parked to the south of the area with a trailing stationary boundary draped back into the central and northern Rockies. Therefore, high temps have been having a hard time reaching the low to mid 30s along the KS/NE border while upper 40s have been more common over east central KS. High temps should be on the colder side of guidance with low 30s being the common reading as a cooler airmass remains in place with surface ridging from the north.
553 PM EST Sun Jan 28 2018 Fair weather with light wind will occur across the region late today through most or all of Monday under the influence of a weak ridge of high pressure.
709 PM EST Sun Jan 28 2018 High pressure will result in dry conditions today. Cooler temperatures arrive Monday.
611 PM CST Sun Jan 28 2018 Colder dense air moving into the region this afternoon behind the cold front moving out of the state to the south. High temperatures will struggle to make it to the low to mid 30s.
913 PM CST Sun Jan 28 2018 Upper level trough axis centered near Missouri to NW Illinois and frontogenetical signature in model data from west central Missouri to Chicago suggest forecast is largely on track with light snow showers and flurries developing late this evening into the overnight period across central IL, and shifting eastward into southeast and east-central IL Monday morning. Colder dense air moving into the region this afternoon behind the cold front moving out of the state to the south. High temperatures will struggle to make it to the low to mid 30s.
Lgt northerly winds overnight becmg nw btwn 30/15-18z 15 to 20 kts at ktyr, kggg, and kshv, and 10 to 15 kts at ktxk,keld,kmlu, and klfk thru the aftn hours with a the passage of a weak reinforcing cold front into already dry airmass.
632 PM EST Sun Jan 28 2018 High pressure will result in dry conditions today. Cooler temperatures arrive Monday.
A weak cold front will move through overnight with the wind shifting around to the north.
The recent snowfall will also allow for cooler temperatures tonight. A weak area of low pressure over southwest SD is producing light snow west of the CWA. High pressure building into the region from the north will bring cold temperatures tonight with lows in the single digits on either of zero. The cold high pressure will keep temps in western MN from climbing very much.
1004 PM EST Sun Jan 28 2018 Low pressure near the coast tonight will move northeastward and farther away from the forecast area Monday.
Cold front extends from just south of Wichita into western Oklahoma, and it's making steady progress south.
853 PM CST Sun Jan 28 2018 A reinforcing cold front is beginning to push into Northeast Arkansas, the Missouri Bootheel, and Northwest Tennessee. Temperatures will drop into the lower to mid 30s for nows. A cold front was located from northeast Ohio through southern Missouri and into western Nebraska. Temperatures will be cooler tonight but seasonal with lows Monday morning in the low to mid 30s. High pressure will build into the central U.
A warm front will move northward through the region tonight, as an area of light snow moves northward through the region.
A wind shift from the north will continue through the late evening hours behind a cold front.
617 PM EST Sun Jan 28 2018 Low pressure near the coast tonight will move northeastward and farther away from the forecast area Monday.
522 PM CST Sun Jan 28 2018 The last remnants of the lower clouds are dissipating quickly across northwest and west central Minnesota.
1126 PM CST Tue Nov 21 2017 High pressure extended from the northern plains into the lower Missouri Valley at 20Z with a pool of very cold air located over the area this afternoon. The center of the high pressure will drift southeast tonight and be over the lower Missouri Valley by Wednesday morning. Winds will continue to diminish through the evening as the high moves into the area and become light by late tonight. Warmer air will begin to spread back into the area on Wednesday as the high continues its track southeast toward the Ohio and lower Mississippi Valley and low level flow becomes southerly over the central plains region.
1217 AM EST Wed Nov 22 2017 A cold front will approach from the west overnight. The front will move across the area Wednesday while low pressure lifts north along the front. The cold front will exit across the maritimes Wednesday night.
345 AM EST Wed Nov 22 2017 A weak area of low pressure off the NC coast this morning will accelerate northeastward off the Mid-Atlantic today. Meanwhile, a cold front will move through the area later this morning.
1206 AM EST Wed Nov 22 2017 Lows tonight will dip to the lower and middle 20s as colder air moves in behind a cold front.
259 AM EST Wed Nov 22 2017 A cold front is advancing southward across east Kentucky early this morning. With the high building in across the area tonight, a cold night is anticipated with lows well into the 20s. but confidence is increasing that a low deck of clouds may develop behind a departing cold front around or after 10z.
823 PM PST TUE NOV 21 2017 High pressure aloft will bring hot, dry weather this week.
Temperatures are on track for at or below freezing early Wednesday morning.
Temperatures have dropped into the lower to mid 40s in most locations. After mild conditions today, highs on Wednesday will barely reach the lower 50s.
258 AM EST Wed Nov 22 2017 A cold front will move through the region later tonight and the first half of Wednesday, bringing rain and snow showers. Of note are the warmer surface temperatures and colder air aloft does not move in until after the cold front moves through the area Wednesday morning. Later Wednesday morning any lingering orographically driven rain/snow showers in the valleys and snow showers in the higher terrain will gradually wind down during the afternoon. Should be quiet Wednesday night as a weak ridge of high pressure builds in from the west and height rise aloft.
Areas of locally dense fog continue to develop across southeast Georgia along a warm front and may spread south to the I-10 corridor. The fog may linger until around mid morning then expecting a decrease in clouds thereafter as a weak cold front moves across the area. then conditions begin to deteriorate after midnight when widespread rain moves in from the gulf ahead of a developing low pressure system in the east cntl Gulf of Mexico. As the low begins to track towards cntl Fl.
There will remain potential for lake effect contributions to stratocu coverage which will diminish during the day as high pressure approaches the region and moves into the Ohio valley by Wednesday evening. Cold front will surge through area late this afternoon/early this evening. Lift from upper trough forcing this front aided to some degree by right entrance region of H25 jet streak lifting up east side of the trough will maintain a band of rain showers along and immediately behind this front. Colder air will settle into the area behind this front, with lows in the low/mid 20s tonight and highs no better than the middle 30s on Wednesday as the core of this cold airmass settles over the central Great Lakes.
1037 PM CST Tue Nov 21 2017 The cold front has moved through all TAF sites with breezy northerly flow in place. A cold front and prefrontal trough currently moving into the Hill Country sweep across South Central Texas early this evening. Weak isentropic lift briefly develops as an upper level trough and jet streak move across our area tonight. Somewhat breezy conditions develop after the frontal passage as high pressure builds in due to a tight surface pressure gradient and continue into Wednesday.
1054 PM CST Tue Nov 21 2017 High pressure centered over northern Nebraska this evening is forecast to push into Iowa by Wednesday morning with the ridge axis just to our west. The cold front will sweep out of our southeast counties by early this evening, but not before dropping some flurries or sprinkles across our northern and eastern counties this afternoon. Winds will diminish overnight, to less than 10mph, as the pressure rises weaken and the center of high pressure gets closer to Illinois from the Plains. Plenty of cold air will settle into the area behind the front, with lows dropping into the low to mid 20s. Full sunshine will not be of much help, as the cold Canadian air limits the highs to the mid to upper 30s.
1132 PM EST Tue Nov 21 2017 A cold front will approach from the west overnight. The front will move across the area Wednesday while low pressure lifts north along the front. The cold front will exit across the maritimes Wednesday night.
143 AM EST Wed Nov 22 2017 A cold front will push southeast across the region early this morning. High pressure will then build into the area for the second half of the week.
240 AM CST Wed Nov 22 2017 Surface observations this morning show a cold front is moving through the Mid State with temperatures in the 30s to low 40s and north to northwest winds. After highs around 60 on Tuesday, temps will be some 10 to 15 degrees cooler today thanks to the cold front and likely won't reach 50 in most areas.