Aikyam-Lab/Synoptic-Bench huggingface dataset:
605 AM CST Sat Nov 18 2017 Cold front had pushed through the northern part of Kansas City and through Wichita as of 07z this morning. Temperatures should drop down into the low 30s tonight.
South to southwest winds will also continue to increase into the afternoon as the LLJ strengthens up to 55 knots and a strong cold front approaches from the northwest, with gusts up to 45 mph expected at times.
624 AM EST Sat Nov 18 2017 Low pressure over central Kansas early this morning will deepen rapidly as it streaks northeast into northern Ohio by evening. 00Z RAOBS indicating strong kinematics associated with upper trough extending through the CONUS. High pressure building into the TN valley will have winds backing around to a more westerly direction and bring an end to any remaining lake effect Sunday morning.
310 AM MST Sat Nov 18 2017 The upper trough axis is just about out of the forecast area at this time this morning, with northwesterly flow aloft as an upper ridge builds in from the west. Strong subsidence on the backside of the trough pushed strong winds across most of the plains over the last couple hours with gusts of 35 to 50 mph. Northwesterly winds will continue around 15 to 30 mph over the high country and far northeastern plains, much lighter elsewhere.
Sustained wind speeds of 10-15 mph early this morning will increase to between 15-25 mph by the afternoon, whilst winds veer to the northwest courtesy of a cold frontal passage. /issued 426 AM CST Sat Nov 18 2017/ Widespread low stratus blankets the region this morning ahead of a cold front approaching from the northwest, currently entering the OKC metro area as of 10Z this morning.
Low temperatures in portions of the upper deserts will fall into the lower to mid 30s early this morning and again early Sunday morning with patchy frost possible.
A very strong cold front will move through the area in the early morning Saturday morning. /issued 411 AM CST Sat Nov 18 2017/ A potent trough axis will move across the area today with the mean flow becoming northwesterly tonight. NW flow aloft will persist through the weekend though a deepening trough will slide across the region Sunday night.
927 AM EST Sat Nov 18 2017 Upper level ridge from the Gulf of Mexico will keep the forecast dry and mostly clear. A ridge of high pressure across the state from the Atlantic eases southward today with light northeasterly winds becoming southwesterly. High pressure ridging across the waters from the Atlantic will ease southward today with northeast and east winds becoming southwest.
Generally dry conditions expected today with high pressure present.
A strong cold front will move south across the terminals this morning, with gusty north winds developing in its wake. The main weather feature today will be a strong cold front that will move across the area, bringing gusty north winds and cooler temperatures areawide. Temperatures will be much cooler today, with highs ranging from the lower 60s north, to the lower 70s along the I-10 corridor. The light winds, clear skies and a dry airmass will promote ideal radiational cooling overnight, allowing temperatures to fall into the low to mid 30s by daybreak Sunday.
As temperatures drop after midnight behind the frontal passage, snow showers will develop across the highest elevations with minimal accumulations through sunrise Sunday. Chattanooga Airport, TN 64 40 50 31 / 60 100 0 0 Knoxville McGhee Tyson Airport, TN 65 39 47 28 / 40 100 10 0 Oak Ridge, TN 62 39 47 27 / 50 100 10 0 Tri Cities Airport, TN 66 38 44 24 / 20 90 10 0 NC.
Probably some mix falling in the higher DBZ in Sauk County. Strengthening low pressure passing by well to the south today. Associated with the low is a sharpening mid-level short wave and area of mid-level frontogenetical forcing that will pass across southern Wisconsin this morning. Increasing northerly winds in the low levels will pull colder air across southern Wisconsin through the morning. Pavement temperatures will remain above freezing, but strength of sloping frontogenetical forcing may result in a burst of wet snow and reduced visibilities with rapid accumulations on grassy and colder surfaces.
646 AM EST Sat Nov 18 2017 With onshore/upslope flow today, expect some drizzle and freezing drizzle.
MVFR/VFR cigs behind a cold front that will move through the entire area this morning. /Issued 251 AM CST Sat Nov 18 2017/ Strong cold front, currently moving into western Osage county, will sweep through the area today with scattered showers across NE OK/NW AR.
334 AM MST Sat Nov 18 2017 A broad ridge of high pressure will gradually shift east across the region through the remainder of this weekend for dry condition with with seasonably cool temperatures today warming slightly on Sunday.
536 AM CST Sat Nov 18 2017 Positively tilted trough swinging through the region this morning will exit to the east by midday today. This will lead to cooler nighttime lows, in the upper teens to mid 20s.
504 AM EST Sat Nov 18 2017 High pressure over the area will move off the coast this afternoon. This will result in warmer conditions and an increase in moisture by late in the day. A cold front will move rapidly across the region tonight with scattered showers and breezy conditions.
A cold front currently moving across N and W TX this morning, is expected to enter the N and W CWA between 11 am and 1 pm then reach the coast between 3 pm and 6 pm and well south of the area by 9 pm tonight. Strong north winds and cooler/drier airmass will filter into S TX behind the front late this afternoon and tonight. As for rain chances with the cold front, moisture will be limited. Much cooler and drier conditions expected tonight with lows in the mid 40s across much of S TX to lower 50s along the coast.
625 AM EST Sat Nov 18 2017 The main aviation concern today will be gusty winds associated with a cold front that will move through this evening.
216 AM PST Sat Nov 18 2017 High pressure will bring a dry weekend.
357 AM MST Sat Nov 18 2017 Cold front is through. then building inversions as warmer air drifts back overhead with a flat ridge building aloft.
544 AM CST Sat Nov 18 2017 Cold front has just about pushed through the southern portions of the forecast area as of early this morning. The other aspect to the day will be the windy conditions, with the highest gusts likely occurring during the morning into early afternoon hours. Otherwise, with the cooler airmass in place along with clear skies and winds becoming light, overnight lows for tonight will fall back down into the middle 20s to near 30.
651 AM EST Sat Nov 18 2017 High pressure is forecast to keep the weather quiet through the TAF period with VFR conditions.
824 AM MST Sat Nov 18 2017 The upper trough axis is just about out of the forecast area at this time this morning, with northwesterly flow aloft as an upper ridge builds in from the west. Strong subsidence on the backside of the trough pushed strong winds across most of the plains over the last couple hours with gusts of 35 to 50 mph. Northwesterly winds will continue around 15 to 30 mph over the high country and far northeastern plains, much lighter elsewhere.
411 AM CST Sat Nov 18 2017 A potent trough axis will move across the area today with the mean flow becoming northwesterly tonight. NW flow aloft will persist through the weekend though a deepening trough will slide across the region Sunday night.
542 AM EST Sat Nov 18 2017 High pressure over the area will move off the coast this afternoon. This will result in warmer conditions and an increase in moisture by late in the day. A cold front will move rapidly across the region tonight with scattered showers and breezy conditions.
418 AM MST Sat Nov 18 2017 Updated Aviation Discussion A broad ridge of high pressure will gradually shift east across the region through the remainder of this weekend for dry condition with with seasonably cool temperatures today warming slightly on Sunday.
A cold front will cross the area this afternoon/early evening resulting in a band of showers, winds switching to the northwest, and ceilings rising to VFR shortly thereafter. /26/ Today and Tonight: Warm advection stratus has overspread the majority of the forecast area this morning ahead of a cold front quickly diving south out of the Central Plains. Very little in the way of precipitation falling out of the shallow ascent of yet, but that should change as the boundary encounters the deeper moisture in place over the lower MS valley later today. Near stationary high pressure along the east coast and low pressure moving across the MS valley has resulted in a strengthening gradient with some rather gusty winds, primarily over the ArkLaMiss Delta region.
Upper level analysis places low pushing into western Hudson Bay, with trough stretching south/southeasterly towards the central plains. Weak wave sliding along the backside of the trough is producing some light snow over portions of north central North Dakota, though this has been diminishing some over the past hour. Otherwise, a quiet day is expected with clearing skies as ridge to the west starts to build in. Ridge builds into the area on Sunday bringing warming temperatures to the area.
1021 AM EST Sat Nov 18 2017 High pressure ridging into the area from the western Atlantic will continue to dominate this afternoon. This will result in warmer conditions. A cold front will move rapidly across the region tonight with scattered showers and breezy conditions.
In addition, temperatures were adjusted up a couple degrees as we are running warmer than forecast this morning. A strong cold front will approach the area this morning and move through this afternoon into the early evening hours. The peak time frame for the higher gusts looks to be 2-8 PM. Temperatures will be on the warmer side today, topping out in the mid 60s. However, they will quickly drop into the 40s behind the front with lows tonight in the low to mid 30s. Tomorrow will be much cooler with highs in the lower to mid 40s.
426 AM CST Sat Nov 18 2017 Widespread low stratus blankets the region this morning ahead of a cold front approaching from the northwest, currently entering the OKC metro area as of 10Z this morning.
314 AM MST Sat Nov 18 2017 The upper trough axis is just about out of the forecast area at this time this morning, with northwesterly flow aloft as an upper ridge builds in from the west. Strong subsidence on the backside of the trough pushed strong winds across most of the plains over the last couple hours with gusts of 35 to 50 mph. Northwesterly winds will continue around 15 to 30 mph over the high country and far northeastern plains, much lighter elsewhere.
Cold this morning with a chance for freezing fog in areas which got rain and snow. High pressure builds across the region today with sunny but cool conditions.
A cool and dry air mass will remain over the area today with high pressure in place across the area.
There will be some clearing by tonight which will allow temperatures to cool into the teens and 20s while there could be a few places in the higher valleys of southwest Montana that dip to the upper single digits. Freezing fog will be possible across northwest Montana valleys Sunday morning.
High pressure is building into the area, and showers have ended. though temperatures will be slightly warmer than this morning. Fog won't stick around as long Sunday, as the ridge axis will have shifted eastward. An upper trough front will start approaching, and on the front side of the trough, a stream of moisture with tropical origins will bringing heavy precipitation as early as Sunday evening.
1025 AM EST Sat Nov 18 2017 Patchy stratocu are moving into the Upper and Middle Keys off the Atlantic, but skies remain clear across the Lower Keys. Temperatures are in the low to mid 70s, and dew points are comfortable in 60s - a beautiful November morning. High pressure centered off Outer Banks of North Carolina will continue to slide eastward, dragging a ridge axis across the Florida Keys later tonight.
01 UTC surface analysis shows an area of high pressure still well back to the NW of the region, however the local pressure gradient is much more relaxed than this time last night and accordingly many stations within the last hour are now reporting calm or nearly calm winds. Though it is unlikely for winds to go completely calm areawide overnight, the lighter winds will be supportive of better radiational cooling conditions, which should help low temperatures get into the low to mid 30s.
921 PM CDT Tue Mar 13 2018 With high pressure becoming ever more centered over the region tonight into Wednesday, there is very little to actually discuss in the short term, let alone change.
Mid level ridging is shifting east this evening toward the central Rockies, in response to an upstream upper trough which is currently spreading inland.
Showers still expected to spread northeastward tonight, with a cold front pushing through the area. Showers increase again Wednesday afternoon, mostly for the higher elevations of SE Oregon and SW Idaho.
935 PM EDT Tue Mar 13 2018 High pressure centered over the northern Plains will build into the Southeast through Wednesday.
920 PM EDT Tue Mar 13 2018 Periodic snow showers and cold temperatures are expected most of the week under upper level low pressure. Isolated snow showers are still expected overnight with upper level low across the Ern Great Lakes and Upper OH Valley. The exception is expected in the higher terrain of PA, WV and MD where upslope flow should result in more numerous snow showers with accumulation. Upper low begins to shift east of the area Wednesday. Scattered snow showers are expected with the area in close proximity to the low and steepening low level lapse rates. A limiting factor in snow shower coverage outside of the ridges and N of I 80 could be rising LFC levels due to dry advection and mixing.
Upper level analysis shows an amplified ridge over the Rockies, northerly flow over the Northern Plains, and broad low pressure centered over the Great Lakes region to the east.
Quiet weather continues in the short term with a high amplitude ridge building across the Central Rockies through Wednesday. Lows tonight will modify a few degrees with onset of warm advection, and then highs on Wednesday will be close to 15 degrees warmer as 700 mb temps rise to +4C. Winds will remain light with the high pressure ridge and light winds aloft. The upper ridge starting out over eastern Colorado tomorrow evening is forecast to be moved out of the state by a vigorous digging trough over the western U.
740 PM CDT Tue Mar 13 2018 No issues with the TAFs tonight/tomorrow as high pressure remains large and in charge. Winds will be shifting to the SE tomorrow af- ternoon as the high moves east of the area. /ISSUED 347 PM CDT Tue Mar 13 2018/ Ridging continues across TX centered over NCTX and will be slowly shifting eastward tomorrow.
We will likely begin to see sub freezing temperatures around Midnight. The coldest areas, mainly near the Tennessee River, may see temperatures at or below freezing for 10 hours. /issued 626 PM CDT Tue Mar 13 2018/ A large upper level trough continues to amplify across the eastern half of the United States today. This will help to push another dry cold front across the Mid South this afternoon. High pressure will quickly build behind the front with a reinforcement of colder air. Areas of frost will also accompany the below freezing temperatures. The high pressure will move east by Wednesday night with a quick turn around to southerly and eventually southwesterly low level flow. This should hold temperatures above freezing in most locations on Wednesday night.
Overall anticipated between 1 and 2 inches with heavier amounts up to 4 inches over the higher elevations. Chattanooga Airport, TN 28 47 32 60 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 26 42 30 58 / 20 10 0 0 Oak Ridge, TN 25 42 29 58 / 20 0 0 0 Tri Cities Airport, TN 22 37 26 54 / 70 20 10 10 TN.
However general lack of organization likely given marginal background thermal troughing and lower inversion heights compared to this aftn.
1147 PM CDT Tue Mar 13 2018 Will be continuing with the VFR forecast even with the high clouds moving in from the NW.
Very light winds in the lowest 5,000 feet of the atmosphere combined with clear skies and the low dewpoints will result in excellent radiational cooling tonight. Some of the traditionally cooler spots in valleys may flirt with freezing around sunrise. /Issued 315 PM CDT Tue Mar 13 2018/ Water vapor imagery continues to show a couple of weak disturbances moving down the back side of the trough this afternoon, with one currently over Oklahoma and the other moving into Kansas. Temperatures are also trending a few degrees warmer than this time yesterday afternoon, with most locations expected to top out in the mid to upper 60s today. Dry conditions will continue to prevail the next several days, as high pressure builds back across the region.
802 PM EDT Tue Mar 13 2018 Scattered snow showers have formed across the area today thanks to a potent upper level low.
A low pressure system may affect parts of the area over the weekend. Radar and surface observations indicated snow showers were ending from the northwest as an upper trough across Indiana was moving southeast. Most areas will see lows in the lower 20s with some upper teens possible in a few areas.
Expect W/SW winds by Wed aftn at arnd 5 kts as the high center slips S of the state.
1030 PM CDT Tue Mar 13 2018 Northerly flow aloft has allowed cooler air to settle south today, with the cool high pressure shifting southeast through the night. This will allow for some cooler readings, but with southwest flow developing at the surface around midnight or shortly after temperatures will become steady or rise a touch towards sunrise. Winds might get a touch breezy along the Buffalo Ridge late tonight and early on Wednesday morning but looking at 10 to 20 mph with a few higher gusts right now. This westerly component will remain in place on Wednesday ahead of another shot of cooler air. This will bring warmer conditions to all locations. In fact, some enhanced mixing could lead towards highs around 60 along the Missouri River into parts of northwest IA before the cooler high pressure works south.
1116 PM CDT Tue Mar 13 2018 Looking at satellite imagery this afternoon a large amplified pattern is in place across the country, with a ridge axis poking north across the Rockies, inducing a downstream meridional flow across the northern and central Plains. The northerly flow across the Plains has brought sufficient dry air south to raise fire weather concerns across the region today, which will increase tomorrow as the dry air mass remains in place with warmer temperatures and possibly stronger winds expected Wednesday.
1047 PM MDT Tue Mar 13 2018 Latest upper analysis shows a high amplitude upper ridge over the Rockies and the high plains. At the surface, most of the great plains are under the influence of high pressure, creating southeasterly winds over the forecast are tonight. The upper ridge will be located over the forecast area on Wednesday, bringing mostly sunny skies and warmer temperatures.
533 PM MDT Tue Mar 13 2018 Upper ridge axis will migrate from the Rockies today to the central Plains on Wednesday. Temperatures on Wednesday will reach at least the lower 70s.
1049 PM MDT Tue Mar 13 2018 Upper ridge axis will migrate from the Rockies today to the central Plains on Wednesday. Temperatures on Wednesday will reach at least the lower 70s.
/issued 413 PM EDT Tue Mar 13 2018/ Latest WPC analysis shows a deep low pressure system off the coast of Massachusetts with an associated cold front extending southward down the mid-Atlantic. The aforementioned northerly flow has also managed to bring in a cooler airmass, as maximum temperatures have struggled this afternoon to reach the low to mid 70s across much of the area.
No issues with the TAFs tonight/tomorrow as high pressure remains large and in charge. Winds will be shifting to the SE tomorrow afternoon as the high moves east of the area.
Mostly clear skies tonight with temperatures near freezing across Extreme NE Texas, SE Oklahoma, and SW and South Central Arkansas. /issued 708 PM CDT Tue Mar 13 2018/ For the 13/00Z terminal forecast will prevail VFR under the influence of high pressure on the surface and aloft through the forecast period.
1105 PM CDT Tue Mar 13 2018 We'll see increasing high clouds later tonight and first part of Wednesday as a mid level trough swings through the Great Lakes. Unfortunately, those warmer temps will come with some pretty breezy/gusty westerly winds. Another one will likely be needed tomorrow as southwest winds ramp up ahead of low pressure moving to our north. Southwest winds ramp up Wednesday morning ahead of a low pressure system passing to our north. A weak cold front is expected to push across the region during the afternoon causing winds to become northwesterly.
We are still in store for a pretty cool night across South Texas with lows ranging from the low 40s to the mid 50s. Lows will range from the lower 40s in the northeast to lower 50s along the Rio Grande and mid 50s along the immediate coast. Temperatures may be a degree or two warmer than today, but generally can expected highs in the the lower 70s.
835 PM MDT Tue Mar 13 2018 Upper ridge and dry airmass continued over the forecast area this evening per water vapor imagery. Tomorrow an initial wave energy moving through during the afternoon bringing some snow showers to the mountains, and some rain to the lower elevations.
Expect windy and cooler temperatures, along with a slight chance of showers, by Wednesday afternoon.
The mean layer across the eastern half of the United States is cyclonic, and the Keys are just along the southern edge of this broad long wave trough complex. From synopsis, a large area of high pressure over the north central United States will shift southward tonight.
/issued 257 PM CDT Tue Mar 13 2018/ A large upper level trough continues to amplify across the eastern half of the United States today. This will help to push another dry cold front across the Mid South this afternoon. High pressure will quickly build behind the front with a reinforcement of colder air. Areas of frost will also accompany the below freezing temperatures. The high pressure will move east by Wednesday night with a quick turn around to southerly and eventually southwesterly low level flow. This should hold temperatures above freezing in most locations on Wednesday night.
The higher MAV MOS numbers look like a good first guess, and if gusty SW winds come to fruition, realized max temps will probably be even higher as many locations west of the MS river make a run on 60F. In the meantime, light winds and clear skies will allow temps to drop into the low to mid 20s tonight.
730 PM EDT Tue Mar 13 2018 High pressure centered over the northern Plains will build into the Southeast through Wednesday.
Another one will likely be needed tomorrow as southwest winds ramp up ahead of low pressure moving to our north. Southwest winds ramp up Wednesday morning ahead of a low pressure system passing to our north. A weak cold front is expected to push across the region during the afternoon causing winds to become northwesterly.
936 PM EDT Tue Mar 13 2018 Scattered snow showers have formed across the area today thanks to a potent upper level low.
/issued 921 PM CDT Tue Mar 13 2018/ With high pressure becoming ever more centered over the region tonight into Wednesday, there is very little to actually discuss in the short term, let alone change.
The freezing level decreased by 1300 feet due to this cooling aloft.
608 PM CDT Tue Mar 13 2018 Looking at satellite imagery this afternoon a large amplified pattern is in place across the country, with a ridge axis poking north across the Rockies, inducing a downstream meridional flow across the northern and central Plains. The northerly flow across the Plains has brought sufficient dry air south to raise fire weather concerns across the region today, which will increase tomorrow as the dry air mass remains in place with warmer temperatures and possibly stronger winds expected Wednesday.