Aikyam-Lab/Synoptic-Bench huggingface dataset:
The passage of a cold front will bring gusty north winds to all the terminals this afternoon, continuing overnight. /issued 300 AM CDT Thu Oct 26 2017/ A strong cold front was currently making its way through the northern Plains early this morning. Before this cold front arrives late this afternoon/evening, we will see something of a pre-frontal trough move through late in the morning.
Winds will become gusty out of the west this afternoon and then briefly decrease before a cold front with strong northerly winds pushes into the area after 00z. /issued 406 AM CDT Thu Oct 26 2017/ A cold front arrives this evening, but not before westerly winds and very dry air cause near record highs today. However the timing of these winds and the surface heating needed to mix them to the surface will not be optimal as the approaching cold front causes winds to diminish later this afternoon during peak heating, so no wind warning will be issued for prefrontal westerly winds. Strong northeast winds are still expected at Guadalupe Pass behind the cold front and the High Wind Watch has been upgraded to a warning for tonight into early Friday.
948 AM MDT Thu Oct 26 2017 Have updated the forecast to remove the high wind warning for Campbell County in northeastern Wyoming. Have also bumped up snowfall just a bit for the higher Black Hills as some shallow upslope should continue through mid-afternoon. Some wind-shielded locations across the higher Black Hills could even drop into the single digits Friday morning. Strong upper ridging over the western CONUS will keep the weather generally quiet across the area through the weekend.
Dry northerly flow aloft will continue today as a strong upper ridge remains anchored off the PacNW coast. Mostly VFR with patchy fog in the lower valleys this morning. Cold front is tracking across Montana into the upper Midwest, with minimal impact to our region other than isolated rain showers across the West Central Mountains near McCall. Temperatures will be slightly warmer today as a strong upper level ridge builds just off the Pacific NW coast, bringing mostly sunny skies and light winds.
621 AM CDT Thu Oct 26 2017 A strong cold front that we are watching is currently through western South Dakota this morning and will be arriving in the Ozarks Region by this evening.
1143 AM EDT Thu Oct 26 2017 Well behind the cold front, mild temperatures and relatively light north northeast winds have prevailed across the peninsula.
/issued 355 AM CDT Thu Oct 26 2017/ SHORT TERM (Today through Friday): A 500mb trough will develop across the central United States today and deepen across the south- central U. low pressure across the Texas panhandle today will bring a strong cold front through northwest TX tonight and through south TX Friday. Low to mid level moisture will increase across the middle to upper TX coast tonight into Friday as the cold front approaches the lower TX coast Fri afternoon. With the cold front moving through deep South TX Fri afternoon. cooler and drier air will advect into the western half of the CWA late Fri morning into early Fri afternoon so temperatures will be below normal across the western and central portions of the CWA and near normal to slightly above normal across the lower TX coast.
Cool and dry high pressure will build over the area from the southwest today through Friday night.
A pre-frontal trough will shift winds to the N around 10 kts 06Z-08Z on Friday. Much stronger N winds will surge into the area behind a cold front between 08Z-11Z Friday, with gusts likely 25-30 kts Friday morning. This deepening system will fail to bring any rain chances but will push the strongest cold front so far this fall with well below temperatures to follow. The sfc pressure gradient should relax in the evening with the approach of the cold front.
A cold front is bringing precipitation in the form of rain mixing with snow across the Northern Rockies this morning. North to northeasterly winds have been gusty at all terminals as well, as a result of this cold front. A cold front currently moving across the Continental Divide into western Montana is producing some pretty gusty north- northeast winds. This cold front will exit southwest Montana by early afternoon.
Some wind-shielded locations across the higher Black Hills could even drop into the single digits Friday morning. Strong upper ridging over the western CONUS will keep the weather generally quiet across the area through the weekend.
High pressure will move from the GOMEX to across the FL peninsula over the next 24 hours. Continued moistening ahead of a cold front on Sat will bring a chance of showers and slight chance of storms.
1042 AM EDT Thu Oct 26 2017 Dry high pressure is settling into the state with mostly clear skies and NE winds expected. Highs are on track to get into the lower to mid 70s this afternoon. Winds become light and more easterly overnight as the high pressure center shifts a bit east. High pressure in place across the waters will keep a NE flow in place through the day. The high pressure center will gradually shift east to over the Atlantic and then NE along the eastern sea board through the next few days, which will turn winds over the coastal waters to the east and SE.
629 AM CDT Thu Oct 26 2017 A strong area of low pressure crossing the region today through Friday will bring howling winds with gusts as high as 60 mph. As of 8Z, the surface cold front is pushing across the CWA with winds quickly increasing. This area will likely see the highest winds for the longest period of time.
Quite a chilly morning across the Mid State with lows getting well down into the low to mid 30s for many locations.
Anomalously strong high pressure remains in place across portions of the western CONUS this morning, with a low well off the southern California coast.
716 AM EDT Thu Oct 26 2017 High pressure will prevail into late week.
The main feature of interest is late in the TAF period with the strong cold front that should reach CLL around 10Z, IAH around 14Z, and near the coast 16Z tomorrow. this will limit moisture return ahead of tomorrow's cold frontal passage.
937 AM PDT Thu Oct 26 2017 Onshore flow returns today for cooler temperatures, especially near the beaches, but still well above normal.
541 AM MDT Thu Oct 26 2017 Have updated to cancel the High Wind Warning at Judith Gap, where wind gusts have decreased to 35 to 45 mph. Strong cold advection is underway, as high pressure in Alberta surges southward. Have cancelled the High Wind Warning for northern Sweet Grass and southern Wheatland but will let the highlight continue at Judith Gap as north winds funnel through the favored location.
CHA and TYS will be VFR as well as high pressure builds in and provides calm and clear conditions.
Winds decrease overnight as a cold front approaches the area. /ISSUED 415 AM CDT Thu Oct 26 2017/ A northwesterly flow aloft will transition to southwesterly tonight as an upper level trough develops over the state. A cold front will move into Southeast Texas Thursday night and Friday morning.
A strong cold front will arrive tonight, beginning around 00Z at KBVO moving south and thru the SE OK/W AR sites btwn 04Z and 06Z. /Issued 430 AM CDT Thu Oct 26 2017/ Early this morning a wave and associated cold front were advancing southeastward through the Rocky Mountain region and Northern Plains. The cold front is currently progged to enter into Northeast Oklahoma around the 21z time frame this afternoon. conditions look to clear out with northerly winds subsiding as the upper level trof axis pushes through the region.
VFR conditions today, then MVFR Cigs will be possible along and after the passage of a cold front tonight. Breezy sly winds and warm advection will boost temps well into the 50s today, as low pressure over the nrn Great Plains moves into far wrn WI by early this evening. The large upper trough digging ssewd across MN will then lead to an occluded low over central WI late tonight, with its cold front moving ewd across srn WI tonight.
724 AM EDT Thu Oct 26 2017 Low pressure will track north through eastern New England today into this evening bringing widespread light to moderate rain to areas from the eastern Adirondacks east into Vermont.
1010 AM EDT Thu Oct 26 2017 High pressure will prevail into late week.
Currently, the low pressure clipper system is centered between Jamestown and Fargo. Northwest winds behind the low across western and central ND were sustained at 25 to 30 mph with gusts of 40+ mph. Since daytime temperatures are in the lower 30s, thinking that we would not see much in the way of blowing snow - perhaps a reduction in visibility when snow will be falling, but not a widespread or long-lived time period of blowing snow. The clipper moves quickly southeast today, and tonight cold high pressure moves in. Lows tonight should range from the lower teens in the southwest to the mid 20s in the James Valley.
A cold front is expected to push through the Panhandles later this morning. The higher end of the gusts are expected to be across the northeastern Panhandles so think KAMA will remain just below the 40kt mark. A large upper level trough over the MT/ND/Canada area will surge south today and bring a good shot of cold air to the Panhandles.
A storm system will graze northeast Utah and southwest Wyoming today, bringing cooler air to the region. With this cold front will continue southward through Utah today, bringing gusty northerly winds especially across south-central and far southwest Utah, where the pressure gradient really becomes packed. The ridge off the coast of northern California continues to amplify going into the weekend. A dry cold front is expected to push through the SLC terminal this morning between 17-18z, allowing northerly winds to settle in by 16z.
1119 PM CST Thu Mar 1 2018 Early-afternoon water vapor imagery depicted an intense mid-level trough off the Pacific Northwest coast with a downstream short- wave trough amplifying from the upper Great Lakes to lower Ohio Valley. Between these systems, a ridge axis stretched from the lee of the Canadian Rockies to central High Plains. The aforementioned upper-air system off the Pacific Northwest coast will gradually drift inland over the next 24-48 hours with the associated High Plains ridge edging east atop the Great Plains. In response to these developments, a lee cyclone will deepen over the High Plains with breezy to potentially windy conditions developing on Friday into the weekend. Initially, low- level moisture content will be limited with relative humidity values falling into the 25-30 percent range in snow-free areas Friday afternoon as temperatures warm into the lower to mid 50s.
138 AM EST Fri Mar 2 2018 A cold front has moved through the area.
236 AM CST Fri Mar 2 2018 High pressure both at the surface and aloft will build over the Mid South today and persist through the first half of the weekend.
1003 PM MST Thu Mar 1 2018 21z surface analysis had warm front from central MT into central SD. Water vapour had upper ridge building over the northern Plains with upper low spinning off the northwest CONUS coast. Tonight/Friday, upper/thermal ridge peaks over the CWA with steady warm air advection as upper low moves into the northwest CONUS. Warm front will push through entire CWA tonight on 30-45kt southerly low level jet east of the Black Hills. Temperatures will be elevated tonight over the higher terrain/downslope zones as well as the downstream ridges from KIEN to KICR.
After a few very wet days over and around the Tennessee Valley, a drier and cooler airmass following a cold front passage late this afternoon, had brought an end to the rain. The drier, cooler air will result in night time lows falling into the upper 30s - close to seasonable norms.
A low pressure system over the Pacific Northwest will continue to usher in colder, unstable air tonight into this weekend.
The high will slide east today and into the Great Lakes tonight. The winds will not be overly strong, but with the dry airmass over head will likely see some elevated fire weather conditions develop across southeast Kansas and western Missouri where the higher winds and low humidities will be co-located. High today will be a few degrees higher than yesterday given the southerly winds and sunshine, with readings in the mid 50s to near 60 and overnight lows tonight in the low to mid 30s under mainly clear skies.
1116 PM CST Thu Mar 1 2018 Quiet weather is expected through tomorrow afternoon in the wake of a departing low pressure system. Gusty northwest winds will diminish after sunset tonight and gradually veer tomorrow in response to a ridge of high pressure moving across the region towards the Great Lakes. Kanofsky The combination of ridging aloft and the continued influence of a high pressure center at the surface will ensure quiet weather through most of the weekend.
Area now under the influence of dry and cooler high pressure in the wake of Thursday's cold frontal passage.
Light north winds behind this morning's cold front may be enough to inhibit patchy fog development overnight, but due to the wet soils and lowering temperature/dewpoint spreads we will keep it in the forecast for now.
TFJ Aside from the outside chance for early morning freezing fog here and there, the main forecast challenge remains the upcoming storm system through this weekend. The large low pressure system off the coast of Oregon and Washington State is now beginning to impact land there. On Friday, as the storm system moves further inland over the PAC NW, it begins to break up and spread out into smaller circulations of low pressure energy.
Ridging influences sfc/aloft will result in VFR/SKC continuing at CKV/BNA/MQY thru 03/06Z.
/issued 946 PM CST Thu Mar 1 2018/ Drier air in the low and mid levels continues to advect S into the region this evening, in wake of our cold frontal passage which has shifted off the SE TX/S LA coast. However, the water vapor and IR imagery indicates a substantial cirrus shield along the subtropical jet that lingers across much of S TX into the Lower MS Valley and SE states, but recent trends depict this cirrus shield gradually sinking ESE as drier air continues to advect E beneath the amplifying upper trough over the OH Valley and Mid-Atlantic states. The short term progs remain in agreement with the cirrus shield gradually diminishing from NW to SE overnight, as sfc ridging continues to build S into the area.
Winds will be breezy to gusty at times, especially on exposed ridge tops.
307 AM CST Fri Mar 2 2018 Broad upper ridging was over the central Plains early this morning with high cloud passing through on a weak wave/isentropic upglide. Warmer temps also expected for tonight with south winds backing off a bit but under a strong low-level jet.
/issued 934 PM CST Thu Mar 1 2018/ A strong upper-level trough is moving east into New England this evening.
303 AM EST Fri Mar 2 2018 Dry weather is expected from today through the weekend as a ridge of high pressure settles across the area.
302 AM EST Fri Mar 2 2018 After a few straggler rain showers finally exit the area early this morning, a ridge of high pressure will spread across the region. This ridge will bring cooler and drier air into eastern Kentucky, which will lead to clearing skies.
Cold front slides through midday, and wind will turn from WNW 5-10 KT to N at 5-10 KT. /issued 404 PM EST Thu Mar 1 2018/ Deep layered high pressure continues to hold over the region this afternoon.
358 AM CST Fri Mar 2 2018 Clear and cool this morning with temps within a degree or two from the freezing mark throughout Central IL. Light northwesterly winds dominate and are expected to become more northerly today as the ridge axis slips to the east. Even with the cooler air and the high pressure moving through the Midwest, plenty of sunshine will help to keep high temps in the upper 40s/lower 50s, above normals for this time of year.
1149 PM MST Thu Mar 1 2018 A large complex Pacific low pressure trough with strong south southwest flow aloft will impact western mountains of Wyoming tonight and Friday. Strong winds are expected over the higher ridges in the mountains and over and near the east slopes of the mountains and through the wind corridor from Sweetwater through southern Fremont and Natrona counties.
1147 PM CST Thu Mar 1 2018 Quiet weather will persist over the next day as an upper level ridge remains over the central US. Locations across the central state will be slightly cooler with highs only in the low 50s which is still well above normal for this time of year. Lows Thursday night will be in the upper 20s to low 30s, which is nearly 10 degrees warmer than the previous night.
Latest rap and satellite imagery showed a zonal flow in the upper levels as well as ridging building into the ArkLaMiss from the Plains in the lower to middle levels of the atmosphere. On the surface a secondary cold front had pushed across our southern counties. A 1030 mb high over the Great Lakes will build high pressure into the forecast area. After the high clouds clear this morning clear skies is expected through tonight. It will be a little cooler today with highs from the upper 50s northwest to the middle 60s southeast. There may be some normally cooler locations that may briefly touch freezing during the early morning hours.
240 AM CST Fri Mar 2 2018 238 AM CST Looking at a pretty quiet period thanks to high pressure.
248 AM CST Fri Mar 2 2018 High pressure will dominate the region through the weekend, leading to sunny and dry conditions and a gradual warming trend.
1115 PM CST Thu Mar 1 2018 High pressure building into the upper Midwest has brought a rapid decrease in wind speeds from this afternoon as pressure gradients relax across the area. while high pressure over the Plains is building slowly eastward. with readings in the lower 30s close to the Indiana border. Aside from a few high/thin clouds, abundant sunshine will prevail on Friday as high pressure moves across the region. as upper ridging builds across the Great Lakes/Midwest.
334 AM CST Fri Mar 2 2018 The latest sfc analysis was indicating an elongated ridge extending down along and west of the mid to upper MS RVR Valley, while south- southeasterly return flow gradient was organizing up the western plains.
451 AM EST Fri Mar 2 2018 The mean layer ridge persists over the Western Caribbean, well portrayed by the vast expanse of dry air apparent on water vapor imagery. Large scale multi- spectral imagery highlights the developing cyclone just east of the Delmarva. Dangling to the southwest of this powerful storm is a cold front which is draped over the Florida Peninsula.
Low temperatures tonight in the low to mid 20s in far eastern Colorado with upper 20s to low 30s elsewhere.
345 AM EST Fri Mar 2 2018 The dynamic midlevel trough has pivoted across the central Great Lakes overnight, becoming negatively tilted well east of southeastern Michigan. Very strong upper level confluence, deep isentropic downglide, and differential geopotential height rises off of the lowered height anomaly all supports deep subsidence within the column today. Associated surface ridging will begin to build into the forecast area as the center of anticyclone aligns with the southern Lake Michigan basin by this evening. As for clouds, model data shows an 850 mb temperature gradient become aligned north to south over center sections of the Lower Peninsula. The northern cwa will see the warmer readings with little to no snowpack from this past event. Generally went a degree cooler than MOS for tonight with lows likely dropping to around 20 degrees in many areas.
Secondary surge of cooler and drier air will push through the area today as a Canadian high begins to build in across the southern U. high temps this afternoon will range from near 70 across the far Nw Ga zones to the mid 70s across much of Ne Fl which will be a good 10 to 15 degrees cooler than yesterday. Lows tonight will be in the lower to mid 40s inland and upper 40s to near 50 along the coast.
335 AM CST Fri Mar 2 2018 Upper level ridging will persist across our part of the country today though some changes are expected into the weekend.
328 AM EST Fri Mar 2 2018 Low pressure pressure will move off the New England coast today.
108 AM EST Fri Mar 2 2018 The cold front will continue to push to the east this evening. Overnight lows will range from the upper 20s to the lower 30s. High temperatures will be in the low to mid 40s on Friday. This will lead to decent ridging developing across our area and dry conditions through the weekend.
Cold front has moved through all taf sites this evening.
An upper low over the coastal waters keep showers and lower snow levels over the region for the next few days.
318 AM CST Fri Mar 2 2018 (Today and Tonight) The recent rainfall combined with the clear skies and nearly calm winds will produce some patchy and very shallow ground fog in some areas early this morning even though the low level airmass would normally be too dry for fog. Lows temperatures tonight will not be as cool as this morning and only bottom out in the low 40s east to upper 40s west where increasing dewpoints and winds of 5 to 10 mph will lessen surface heat loss.
250 AM MST Fri Mar 2 2018 A warming trend will continue today ahead of an approaching low pressure system. High temperatures will likely reach the mid 70s across the lower deserts, making it the warmest day in nearly two weeks.
1247 AM EST Fri Mar 2 2018 The cold front will continue to push to the east this evening. Overnight lows will range from the upper 20s to the lower 30s. High temperatures will be in the low to mid 40s on Friday. This will lead to decent ridging developing across our area and dry conditions through the weekend.
Broken clouds and scattered showers currently across the northern half of the area should be decreasing through the rest of the night as the upper trough axis pulls away and drier low level air moves in. Temps will be below normal today and tonight, with lows tonight much colder than we have seen for a few weeks, dropping below freezing area wide.
Main concerns this cycle will be prevalent LLWS through much of today, gusty SWly sfc winds, and an approaching cold front. A cold front currently arcing across the Central Plains continues pushing south and will be the primary weather maker late in the period. QPF will remain on the lower end as well with maximum values under a quarter of an inch. Cold air will lag the surface frontal boundary, so winter weather concerns are nil and sub-freezing air should not arrive in northern AR until late Thursday evening, after moisture and precipitation have pushed south and east of the area. By the end of the period, most areas will be near or below freezing with low 20s north and low 30s south.
706 AM EST Wed Jan 31 2018 High pressure over the Mid Atlantic region will move off the coast today.
543 AM EST Wed Jan 31 2018 A cold front crosses Thursday, bringing rain. As high pressure moves off to the east today, a decent southwesterly wind flow will develop. With these winds, will go toward the warmer side of MOS guidance for highs. Winds will continue tonight as clouds increase in advance of an approaching cold front. With the clouds and wind, will go toward the warmer side of MOS guidance for overnight lows. The mean longwave trof will amplify yet again into the region with an associated cold front slated for Thursday evening.
Chilly morning across Middle Tennessee with temperatures currently ranging from the low 30s in western counties to the low 20s in eastern zones. The continued strong LLJ along with increasing low level moisture will lead to much warmer temperatures Wednesday night, with lows only dropping into the 40s. 00Z guidance continues to show rain breaking out just before sunrise in parts of the area, with rain increasing in coverage through the day as a strong cold front sweeps southeastward during the late afternoon and evening hours.
Ahead of the next cold front, temperatures will continue above seasonal normals.
1015 AM EST Wed Jan 31 2018 Cold high pressure will move offshore by Thursday.