Aikyam-Lab/Synoptic-Bench huggingface dataset:
606 AM CDT Mon Mar 19 2018 A dryline and Pacific front has moved across the TAF sites clearing out the low stratus and BR leaving VFR skies with FEW-SCT cirrus to prevail today through Tuesday. Winds increase to 10 to 16 KTs on Tuesday on another surge of high pressure. Behind the dryline across west central Texas, a Pacific cold front is roughly along a Brady to Ozona line. Both of the above features will continue to move eastward early this morning while weak troughing in the mid-levels remains across the northern half of Texas. There is still a slim opportunity for some showers and storms to develop this morning as the Pacific cold front overtakes the dryline. However, winds will not go calm tonight as a northern stream cold front moves through south central Texas.
933 AM EDT Mon Mar 19 2018 Cold high pressure will continue to build south from Canada through Tuesday.
Drier and cooler air then moves into the area behind the front on breezy NW winds. Behind the cold front, strong high pressure will build into the area, and winds and seas will increase to advisory level for a day or two.
High pressure will bring a strong warming trend the first half of the week. Pretty dry as a ridge builds in from the west, with precipitable water measured at 1/4 of an inch and surface dew points in the teens and 20s (down 10 to 15 degrees over the past 24 hours).
712 AM EDT Mon Mar 19 2018 Our stretch of quiet and warmer weather continues today, with high temperatures into the 40s and low 50s.
Upper level ridge was over the area this morning ad will shift east.
A Frost Advisory remains in effect for interior Mendocino county where numerous sites have been reporting temperatures in the lower to mid 30s early this morning.
Mostly quiet weather across Utah and southwest Wyoming this morning as low-amplitude ridging builds in over the Great Basin.
526 AM MDT Mon Mar 19 2018 Rather compact upper low moving across the Ks/Ok border early this morning with cloud tops now warming over the CWA. Dry Tuesday as upper ridging begins moving towards the area. Max temperatures about 10 degrees warmer on Tuesday with more sunshine and warming 700H temps.
A vigorous upper level low pressure system currently over northern Oklahoma, along with a weak system over southern Alberta, will bring light precipitation to the region. Surface temps around freezing could limit the snowfall amounts. However a weak upper level trough will cross the region on Tuesday with additional light pcpn possible. The models show a weak short wave trough leaving the region to the east on Tuesday night with some residual chances of rain/snow for this time.
932 AM EDT Mon Mar 19 2018 High pressure will ridge into the area from Ontario as low pressure tracks east across Tennessee through tonight. This low will move off the Middle Atlantic Coast Tuesday.
Cooler than average temperatures will dominate the pattern through the end of the week, with the next opportunity for precipitation coming this weekend. As it stands, we are probably dealing with snow accumulating mainly on the ridges and lower elevation grassy surfaces.
A closed upper level low will offshore at 130W will slowly fill and move onshore this evening bringing light showers late this afternoon as temperatures near normal. And, for northern California, the lower to mid 50s. " Showers will continue overnight into Tuesday as the upper low opens and an upper level trough moves through the area.
1106 AM EDT Mon Mar 19 2018 Cold high pressure will continue to build south from Canada through Tuesday.
1003 AM CDT Mon Mar 19 2018 Main low pressure area currently located in extreme SE KS at this time. The low will make slow progress into SW MO by noon time, with wraparound showers in the comma head along the Turnpike, slowly shifting northeast of the forecast area as well. The more widespread/heavier precip should tend to focus along/just north of the mid-level convergence zone just northeast of the low center, transitioning from parts of central Kansas just north of the Wichita metro early this morning into east central Kansas and eventually western Missouri by late morning. An upper trof will amplify across the eastern CONUS on Tuesday with rather cool northerly flow upstream across eastern Kansas.
A small upper level low continues to be positioned off the coast this morning with the forecast area under a weak northwest flow.
100 PM EDT Mon Mar 19 2018 Our stretch of quiet and warmer weather continues today, with high temperatures into the 40s and low 50s.
A warm front will continue to slowly lift north across the area late this morning/early this afternoon with the cold front expected to move in later this evening. Chattanooga Airport, TN 67 52 62 36 / 80 100 60 40 Knoxville McGhee Tyson Airport, TN 67 51 60 35 / 80 100 70 70 Oak Ridge, TN 65 51 60 35 / 80 100 70 70 Tri Cities Airport, TN 65 48 63 37 / 40 100 80 90.
A weak upper trough stetching acorss the Pacific NW will combine with afternoon instability to support shower development across east-central Oregon and west-central Idaho. Morning weather balloon from KBOI showing a warming trend in the lowet levels over the last 24h which supports the forecast warming from yesterday. The upper flow will back to southwest tonight and Tuesday, opening the door to additional moisture and warmer air.
Amid decreasing cloud cover and a drying airmass, afternoon temperatures are expected to climb into the lower/mid 80s. A line of showers along the first of two cold fronts should briefly impact BPT-LCH- AEX beginning around 13-14Z, then shifting eastward into LFT-ARA by 15Z. The gusty winds will diminish Tuesday evening as high pressure begins to settle over the region setting up a beautiful mid week forecast with seasonal temperatures and plenty of sun. A cold front will move through the area during the day ushering in drier air which will allow this fog to dissipate.
805 PM EST Wed Dec 20 2017 Evening IR satellite imagery is showing the approaching cold front moving south through the Florida Panhandle as the front gradually weakens. A weak cold front will move south through the coastal waters tonight and Thursday morning. High pressure and calm conditions will then build back in behind the front through late in the weekend.
420 PM MST Wed Dec 20 2017 Upper flow over the northern plains is zonal ahead of an approaching trough. At the surface, low pressure is located over northeastern WY. The warm front stretches across the CWA, from northeastern WY through south central SD. Arctic air will begin pushing into the region this afternoon and evening behind a cold front, as the low pressure system shifts southeastward. The northern Hills may get an inch or so with some slight upslope enhancement, but southwestern SD and parts of northeastern WY are expected to receive the highest amounts of 1-3 inches.
509 PM EST Wed Dec 20 2017 A ridge of high pressure will build across the region today.
A cold front will move into northern Arizona this evening. High temperatures Thursday look to be in the low 30s in the mountains to around 50 in the Verde Valley. Warmer temperatures and dry weather are forecast for the weekend. The cold front at 5 pm along a line from Milford Utah-Las Vegas -Santa Barbara. DL By RR Similarly, the surface cold front will cross the area from the northwest to southeast, first impacting the Kaibab Plateau shortly before midnight tonight and exiting the area by way of the White Mountains Thursday afternoon.
Upper level low is departing to the east and showers are quickly winding down which will come to an end by midnight and skies clearing. A ridge of high pressure off the Pacific Northwest will nudge inland overnight and Thursday placing us under a cold dry northerly flow.
The cold front will move across southeast GA during the night. especially toward dawn along and behind passing cold front. An approaching cold front will result in increasing sw winds tonight reaching 15-20 knots offshore(SCEC).
Will expect some BR developing late tonight with general MVFR conditions due to light winds and increase in moisture, but not too confident on the lower visibilities. Clouds and humidity will increase through Thu along with warmer temps and strengthening southerly flow. In addition, the low level moisture will be sufficient for isol -shras across the far northern CWA and waters in response to increasing convergence ahead of a cold front and its associated upper trough. Could see patchy fog as well, but it should be light as the low level jet is progged to strengthen Thu night and keep the airmass mixed along with increasing the cloud cover.
A cold front will move into northern Arizona this evening. High temperatures Thursday look to be in the low 30s in the mountains to around 50 in the Verde Valley. Warmer temperatures and dry weather are forecast for the weekend. 9 pm surface obs show the cold front along a line from Hanksville UT to Kanab to near Daggett CA. This due to a strengthening of the low level winds ahead of the cold front.
721 PM EST Wed Dec 20 2017 A ridge of high pressure will build across the region today.
825 PM EST Wed Dec 20 2017 Upper disturbance axis and attendant low pressure center just impinging upon NW extent of CWA as of this update. as the front/low center move east of the state we will see a wedge of high pressure quickly build in across the CWA with the surface flow turning eastward over night.
855 PM CST Wed Dec 20 2017 The latest surface analysis indicates high pressure was drifting slowly east across the upper Great Lakes this evening. Quite a bit of dry air in the low levels this evening with surface dew points in our area ranging from the mid teens to mid 20s. The lower band of clouds to our west will eventually make their way into at least our west counties by morning and then gradually overspread the entire area during the day.
536 PM CST Wed Dec 20 2017 Low pressure continues to pull away but a moist airmass remains over the area.
650 PM EST Wed Dec 20 2017 High pressure will build over the region tonight then move east on Thursday.
A strong cold front continues to move through the state. Much cooler temperatures will move into the region and persist into the weekend.
252 PM PST Wed Dec 20 2017 Strong cold front currently moving through the region will bring a burst of snow this morning with low visibility for a short period of time. There will be only a few lingering impacts from this morning's snowfall as high pressure builds back over the region for the end of the week. Urban locations in western Nevada should be warmer, generally in the mid teens. Any wet surfaces, which should be fairly rare, will be prone to freezing resulting in slick spots.
304 PM PST Wed Dec 20 2017 Strong cold front currently moving through the region will bring a burst of snow this morning with low visibility for a short period of time. There will be only a few lingering impacts from this morning's snowfall as high pressure builds back over the region for the end of the week. Urban locations in western Nevada should be warmer, generally in the mid teens. Any wet surfaces, which should be fairly rare, will be prone to freezing resulting in slick spots.
540 PM CST Wed Dec 20 2017 Surface data shows ridge of high pressure extending south into region through day today. Moisture channel satellite data and upper air display trough aloft over western US, with series of waves into the west southwest flow over the rockies. Models consistent in development of low pressure system in the central plains as the upper trof moves east toward the plains.
Chattanooga Airport, TN 47 56 48 59 / 30 10 10 50 Knoxville McGhee Tyson Airport, TN 44 55 43 59 / 40 10 0 50 Oak Ridge, TN 43 55 45 58 / 40 10 10 60 Tri Cities Airport, TN 38 53 37 57 / 40 10 0 40.
Did lower temperatures to the lower side of the blended guidance with the fresh snow and possible late clearing.
Ceilings should eventually erode 21/22Z-21/24Z except CSV as more of a sfc warm sector pattern becomes established as warm front to our S finally pushes N of mid state around 21/15Z and sfc winds veer N/NE generally 5-10kt winds to S.
A cold front will push across the TAF sites at the end of or just past the end of this TAF cycle that could also bring MVFR conditions.
/issued 251 PM CST Wed Dec 20 2017/ (Tonight and Thursday) Southwest flow will continue across the area through Thursday ahead of am upper level trough diving south across the Great Basin region. Meanwhile, a strong cold front will be approaching the northern Big Country by late Thursday afternoon. The combination of a strengthening low level thermal ridge and compressional warming ahead of the cold front will result in an unseasonably warm day tomorrow, with afternoon highs topping out in the mid and upper 70s.
Warm air advection from southerly winds combined with partly cloudy skies should result in another warm day Thursday as daytime temperatures warm into the low to mid 70s areawide.
Cold frontal system has now shifted south and east out of the region. Precipitation totals have been on the low end of the spectrum: locally up to 0. We have heard reports of accumulating snow down to around 4000 ft, and 4 to 6 inches of snow over the higher Sierra. A few snow showers are forming over the higher elevations of the Sierra and southern Cascades, but snow accumulations will be scant moving forward.
348 PM MST Wed Dec 20 2017 Upper trough dropping into the Great Basin this afternoon with very warm and dry southwest flow ahead of it over all of srn CO. Tonight, trough digs southward toward the four corners, with mid level low closing off over srn UT by early Thu morning. Cold front drops south through the plains toward sunrise, then banks up against the eastern mountains by midday Thu. On Thu, upper low moves slowly eastward into CO, with system weakening and taking on a more positive tilt by late afternoon as it tracks along the CO/NM border. I-25 corridor amounts in general look spotty and light, with perhaps an inch or 2 along the Palmer Divide and across the higher terrain south of Pueblo.
00Z NAM depicts isentropic lift in the 290-300K layer increasing toward sunrise, but this would be above the low cloud layer. Any drizzle from the lower cloud layer overnight should be very light.
Currently, air temperatures in Keys island communities range from the lower to mid 70s, while dewpoint temperatures remain near 70F. An upper-level composite analysis this evening indicates a deep layer mean anticyclone still dominating the local atmosphere, but displaced south from 24 hours ago, now centered over the northwestern Caribbean. Expect another mostly clear and mild night with light breezes and temperatures holding mostly in the lower 70s, with plenty of dew at daybreak. A weak high pressure ridge lies very near or just north of the Florida Keys.
Upper trough currently over the western coast moving SE into the UT/NV region. Cold frontal boundary will move south out of Wyoming around 2-3 am bringing a surge of cooler air and gusty winds. Temperatures overnight will dip into the lower 20s before the cold frontal push and not get above the mid 20s on the plains on Thursday. Amounts at this time will range from 4 to 8 inches over the mountains with locally up to a foot possible over the western facing slopes of the higher elevations. Positively tilted upper trof and low will continue to weaken and shear apart into New Mexico on Thursday night.
but with model guidance showing a secondary area of energy rotating around the upper low overnight we will leave some mention of showers across the region until just after midnight. Chances are a little better across parts of Alpine and Mono counties where the low to mid level flow will become more upslope from the northeast overnight. Winds at ridge top level should turn more northeast overnight as well. /Issued 304 PM PST Wed Dec 20 2017/ There will be only a few lingering impacts from this morning's snowfall as high pressure builds back over the region for the end of the week. Urban locations in western Nevada should be warmer, generally in the mid teens. Any wet surfaces, which should be fairly rare, will be prone to freezing resulting in slick spots.
As a low pressure system center passes by well to our south, light rain over mainly the Pennyrile region of KY is expected to erode rapidly from the west during the remainder of the afternoon. The PAH forecast area will be under ridging aloft Thu as surface pressures begin to drop and southwesterly low level flow increases ahead of the next low pressure system. A warm advection flow pattern will set up across the lower MS/lower OH valley Fri.
A strong cold front will enter far northwest Oklahoma about 15-18Z Thursday, then advance quickly toward the southeast, reaching all our TAF sites by 00Z (probably will reach KSPS about 00Z).
953 PM EST Wed Dec 20 2017 High pressure will build over the region tonight then move east on Thursday.
627 PM EST Wed Dec 20 2017 A ridge of high pressure will build across the region today.
1005 PM EST Wed Dec 20 2017 A ridge of high pressure will build across the region today.
An area of high pressure currently over southern Saskatchewan will track southeast across the region tonight through Sunday morning. The high pressure will shift the winds from the northeast today, to the southeast on Sunday. A low pressure system approaching the region from the west will strengthen the pressure gradient Sunday afternoon, mainly in north central where gusts could exceed 25 mph at times.
741 PM EDT Sat Jul 15 2017 High pressure brings comfortable, dry weather the balance of the weekend.
/issued 334 PM CDT Sat Jul 15 2017/ Showers and thunderstorms are ongoing around the region this afternoon, associated with a cold front.
Upper level ridging over the western CONUS will build eastward over the next 24 hours and allowing southerly return flow to become more established over NE Kansas. Raised lows a couple of degrees given recent cool biases in the models and the potential for the high clouds. Highs for tomorrow will rise back into the low to mid 90s as H850 temps rise into the low to mid 20s C.
915 PM EDT Sat Jul 15 2017 Weak high pressure over the midwest will control the weather through Sunday.
1043 PM EDT Sat Jul 15 2017 High pressure will bring mostly clear skies tonight.
Expect excellent radiational cooling conditions tonight under the influence of the ridge with a clear sky, light wind and low dew point temperatures. Another high pressure system will move into the Upper Midwest on Sunday which will push a cold front south into the mid Mississippi Valley.
Winds remain somewhat variable across the region this evening with persistent westerly winds expected to develop overnight as high pressure builds into western MT. An approaching Pacific cold front is generating scattered showers and thunderstorms across much of the Great Falls forecast area this afternoon. Gusty west winds and dry conditions will prevail across north central Montana on Sunday with afternoon highs expected to be 5 to 10 degrees cooler than today.
Strong onshore flow is developing in response to an upper level trough that will cross the forecast area late tonight.
Chattanooga Airport, TN 70 88 70 89 / 30 30 10 30 Knoxville McGhee Tyson Airport, TN 67 87 69 88 / 20 10 10 20 Oak Ridge, TN 67 88 68 89 / 20 10 10 20 Tri Cities Airport, TN 63 86 64 87 / 10 10 10 30.
Night and morning low clouds and fog will be restricted to coastal areas as the marine layer becomes shallower under strengthening high pressure aloft. A push of remnant moisture into the lower deserts is possible Sunday morning, but not other impacts are anticipated. The upper-level ridge has begun it's progression northward, which has brought stronger southeast flow in the mid-levels, although the lower levels remain very dry as seen on the morning KNKX sounding. The ridge may be a bit strong for much convection over the mountains today, but a stray shower/thunderstorm could develop this afternoon as a weak upper- level disturbance moves over the area.
946 PM CDT Sat Jul 15 2017 Quiet weather will remain across central and southeast Illinois overnight with high pressure lingering over the area. However, a weak front/trof is sinking toward the area from the upper Midwest. It will be warmer tonight than last night as low-level flow turns more southerly between departing ridge axis and approaching boundary. High pressure was centered just north of Bloomington early this afternoon, and will be shifting into the Ohio Valley this evening. Latest model guidance suggests a few showers/storms with it will be possible as soon as late Sunday morning across the northern CWA, but main threat remains with scattered afternoon and early evening storms as the cold front moves southward across the forecast area. Have continued the trend of raising the high temperatures from the model blends, solidly in the low-mid 90s most areas.
Slightly cooler temperatures will continue through the evening as an upper level ridge amplifies to the west. As the ridge axis pushes east tomorrow, western and central North Dakota will transition to southwest flow aloft. A few of the high resolution models show the potential for some precipitation approaching the west by Sunday mornings. More showers and thunderstorms will be possible during the afternoon hours over the northwest associated with an approaching cold front. Showers and thunderstorms will become more numerous along the cold front by the evening hours on Sunday.
921 PM EDT Sat Jul 15 2017 Quiet evening across central Kentucky and southern Indiana as high pressure continues to dominate our local weather. Some patchy fog will be possible in the low- lying and typical fog prone areas overnight. Some patchy fog to areas of fog will develop after midnight across the region as temperatures fall into the low to mid 60s. Temperatures will be a few degrees warmer than today, topping out in the mid to upper 80s. For tomorrow night, a cold front will drop towards southern IN.
634 PM CDT Sat Jul 15 2017 At 245 PM, a cold front extended from Marquette Michigan to Sioux Falls South Dakota. The highest threat for storms and severe weather will be from 4 PM to 10 PM. Since the current satellite is showing this moisture in the wake of the cold front and this has been a consistent feature, increased the cloud percentages some.
1144 PM CDT Sat Jul 15 2017 At 245 PM, a cold front extended from Marquette Michigan to Sioux Falls South Dakota. The highest threat for storms and severe weather will be from 4 PM to 10 PM. Since the current satellite is showing this moisture in the wake of the cold front and this has been a consistent feature, increased the cloud percentages some.
1028 PM EDT Sat Jul 15 2017 High pressure brings comfortable, dry weather the balance of the weekend.
WV imagery indicates a weak upper level low drifting eastward across eastern Colorado while a larger scale upper level ridge of high pressure is moving east across the Northern Plains. Near the surface, a broad area of high pressure is drifting slowly east across the Ohio River Valley.
It is unclear (given continued subsidence over the region in the wake of the afternoon H8 trough) if these clouds will persevere. High pressure will begin to erode and retreat wwd Sunday as a trough digs into the Great Lakes.
Winds generally shift to the W/NW through the evening period, but a period of erratic winds is likely at all locations in the vicinity of any convection through much of this evening before a steadier west flow develops late tonight behind the cold front. An approaching Pacific cold front is generating scattered showers and thunderstorms across much of the Great Falls forecast area this afternoon. Gusty west winds and dry conditions will prevail across north central Montana on Sunday with afternoon highs expected to be 5 to 10 degrees cooler than today.
Winds will remain light out of the northeast to east through the overnight period, due to a ridge to our north and a weak trough aligned over the Central Bahamas. Back in the year 1984, the high temperature in Key West was just 84 degrees, tying the daily cold high temperature record for July 15th.