Aikyam-Lab/Synoptic-Bench huggingface dataset:
Tonight the cool high pressure system moves east into southeastern Manitoba with winds across ND becoming easterly and winds of 5 to 10 mph are expected. We are expecting widespread frost across western and central ND, with some freezing temperatures possible as well. Highs should range from around 60 north to the low to mid 50s south.
Temperatures range from the mid 70s in rain cooled areas to the lower 80s elsewhere.
641 AM EDT Fri May 19 2017 High pressure will maintain dry weather and above normal temperatures today and Saturday. Shower and thunderstorm chances will increase by late weekend as moisture builds ahead of an approaching cold front.
With slightly cooler mid levels on Sat, mx highs will also be a couple of degrees cooler. Given the continue onshore wind with long period swells, will continue the high rip current risk.
354 AM CDT Fri May 19 2017 An extremely complicated forecast going forward today as well- advertised upper low spins across the Four Corners region. Despite the presence of these combined forcing mechanisms, degree of destabilization remains in question this morning (persistant cloud cover) along with concerns for deep layer shear as numerous BUFKIT forecast soundings reveal a very chaotic wind field pattern through the lowest 10-15 kft. Heaviest axis of rain will likely be along the highway 50 and I-70 corridors with the soils primed for possible flash flooding. Rains should gradually come to an end through the day on Saturday as cool high pressure settles into the Plains/Lower Missouri Vly.
302 AM MDT Fri May 19 2017 Water vapor shows massive upper low over over wrn CO with moisture being pulled north out of the srn plains through the nrn plains. At the surface, high pressure located over nrn ND with ridge extending swwd into nern WY is stifling the nrn extent of pcpn across our cwfa. Radar return shows best area of pcpn across west central SD at this time, although some of the higher returns are bright banding. Upper low expected to drift slowly ewd through CO today.
Clearing skies tonight as high pressure builds in. Friday will be mostly sunny but remaining below normal in the wake of the low. A semi-vertically stacked area of low pressure in the Central Plains will lift north into the Minnesota and Wisconsin region by Saturday night.
The better chance of storms may come in after midnight as the upper low over Utah moves into N.
Expect VFR conditions at all terminals through the period with any convection re-developing later today expected to once again be confined to the higher terrain remaining clear of all terminals.
A cold front will move through all TAF sites during the overnight hours getting through KAMA by around 12Z. This wave is advancing eastward ahead of a broad upper level low spinning over western CO / eastern UT and may help initiate a few more storms off the dryline over the next few hours. The main wave along the periphery of the low is progged to move across the area Friday afternoon. While the dryline is expected to be just east of the Panhandles, slightly better moisture (Td around 50) behind the cold front will aid in possible storm development Mainly for the western and northern zones Friday afternoon and evening.
415 AM MDT Fri May 19 2017 The closed low pressure system responsible for the return to winter-like conditions in the mountains and some of the high valleys was centered over Paonia early this morning. The low will shift slowly eastward during the day according to models. Dynamic and orographic lift not all that impressive beneath the low circulation. However, instability beneath the cold core low combined with a shift in flow to the north as the high pushes eastward is expected to bring an uptick in snowfall over the mountains this afternoon. Snow decreases tonight as the low center continues to shift over the central High Plains. Meanwhile, lingering cold may cause lows to reach freezing again for some of Colorado's southwestern valleys. Warmer air begins filtering into the area which will drive snow levels to near 10,000 feet and above.
High pressure remains over the Carolinas and will move eastward late tonight.
Scattered showers/convection had developed near the cold front with gusty northerly winds behind the front. the cold front will continue to push southeast and is forecast to enter into Northeast Oklahoma around 09z and reaching the far northwest corner of Arkansas around 12z.
1007 PM EST Fri Nov 17 2017 Northwesterly winds will diminish this evening as high pressure continues to build in form the west. The high will crest across the area early Saturday before gradually sliding offshore. A warm front will lift northward on Saturday night with a mix of rain showers south and rain/snow in the north.
1036 PM EST Fri Nov 17 2017 High pressure will control the region through Saturday. The next cold front will rapidly cross the region Saturday night with light rain.
High pressure across the Mid-Atlantic will shift gradually offshore into tonight, with a relatively light low level easterly flow veering to the southeast late. Ridge across the Mid-Atlantic will shift offshore tonight, with winds generally out of the east around 5 to 10 knots.
641 PM EST Fri Nov 17 2017 High pressure will control the region through tomorrow. The next cold front will rapidly cross the region Saturday night with light rain.
Chattanooga Airport, TN 46 66 40 49 / 0 60 90 10 Knoxville McGhee Tyson Airport, TN 46 66 40 47 / 0 40 90 10 Oak Ridge, TN 47 64 39 47 / 0 60 90 10 Tri Cities Airport, TN 36 64 38 44 / 0 30 90 20 NC.
859 PM MST Fri Nov 17 2017 Snow showers were continuing to diminish across the area this evening as an upper level trough was exiting the region. A cool and somewhat breezy night is in store as high pressure builds to the west tightening the surface pressure gradient. Upper level trough is currently passing overhead this afternoon.
A cold front moving across the region will bring cooler temperatures and an end to gusty winds for most, as a storm system exits the region. North/northwest winds behind the cold front were blowing quite a bit stronger than forecast in the Las Vegas Valley and a few other spots. North/northwest winds behind a cold front will blow around 25 kts with gusts around 35 kts until about 05z.
614 PM EST Fri Nov 17 2017 Northwesterly winds will diminish this evening as high pressure continues to build in form the west. The high will crest across the area early Saturday before gradually sliding offshore. A warm front will lift northward on Saturday night with a mix of rain showers south and rain/snow in the north.
Upper trough axis is currently moving into the Great Basin with southwesterly 140 kt upper jet translating across CO. Have seen some very strong wind gusts across the higher peaks and along the southern I-25 corridor including TAD were a gust to 66 mph occurred around 1 PM. Winds have since decreased a bit across the lower elevations but high res models suggest threat for high wind gusts will continue through 00z. Best window for lift will be from now through 06z as the upper trof swings across. Cold front will drop through the plains this evening bringing a sudden northerly wind shift. Winds will remain gusty across the higher peaks and far southeast plains Saturday morning.
Main forecast challenges lie with the potential for strong winds and the risk for thunderstorms with a cold frontal passage on Saturday. There may be some sct warm advection showers later tonight, esp in southern IL and se MO, but many locations will be mostly rainfree until the aforementioned cold front approaches and moves through on Saturday. Warm air advection in the low-levels will further be augmented by a 50-60 kt low-level jet. However, the mid/upper trof looks to be coming through with a positive tilt, and instabilities look quite marginal with MUCAPES likely to stay at or below 700 J/KG for the most part.
Will maintain POPs through this evening for this activity, after midnight the trough axis washes out over ND. In the short term, look for dwindling chances for precipitation this afternoon and cooler conditions Saturday. Cool Canadian air will accompany the high, creating below average temperatures for most locations in western and central ND.
909 PM EST Fri Nov 17 2017 KBYX detects isolated showers over nearshore and offshore waters surrounding the Lower Keys. In the low levels of the atmosphere, an area of high pressure will be located near the Carolina coastline overnight. In the mid levels of the atmosphere, a ridge of high pressure will be centered over the southeast coast of the United States tonight. In the upper levels of the atmosphere, a trough of low pressure will be located near the Bahamas overnight.
The cold front have moved through Syracuse KS and Lamar CO within the past half hour or so and continues to move toward Oklahoma. Main concern this TAF period will be shifting and increasing winds from the north with a cold front.
Southerly winds and cloudy skies have kept temperatures in the lower to mid 60s. Currently a cold front extends from northeast Kansas and into eastern Colorado. The cold front will move through the region on Saturday. The cold front will be out of the region by Saturday night with rain ending over eastern sections of the forecast area.
Main concern this TAF period will be shifting and increasing winds from the north with a cold front.
622 PM EST Fri Nov 17 2017 High pressure will control the region through Saturday when the next cold front will approach from the northwest.
A cold upper level trough will cross northern Utah early this evening, with high pressure aloft spreading across the region this weekend.
A cold front will move across northern Arizona tonight, with scattered light showers possible this evening.
639 PM EST Fri Nov 17 2017 A strong cold front crosses Saturday night.
Temps will continue to warm thru the overnight hrs and should be in the lower 60s, mid to upper 50s Cumberland Plateau Region by 18/12Z as sfc pressure gradient influences continue to strengthen. Strong winds will develop with approach of a strong cold front.
A cold front with gusty northerly winds will begin moving into the area Saturday morning. /issued 133 PM CST Fri Nov 17 2017/ Upper level trough moving across the central Rockies and Plains will drag a cold front through the forecast area late tonight and Saturday.
However, the main concerns will be associated with the passing of a cold front Saturday morning. A few high clouds will move in from the northwest ahead of the cold front. A cold front will move through the area during the day on Saturday. The front will bring cooler temperatures and strong winds. Temperatures will top out in the upper 60s with areas along the I-10 corridor seeing temperatures in the lower 70s.
530 PM CST Fri Nov 17 2017 Although VFR is expected through the TAF period a very strong cold front will move through around daybreak on Saturday morning. This will change early Saturday as a storm system currently moving through the Intermountain West emerges over the High Plains and allows surface ridging to spill southward through the South Plains.
642 PM EST Fri Nov 17 2017 A low pressure system brings showers that will continue into Saturday along with a thunderstorm.
Showers diminish tonight as a ridge of high pres builds overhead.
431 PM MST Fri Nov 17 2017 Current surface analysis shows initial cold front south of the forecast area, with a secondary front edging into northern SD. Upper level analysis shows fast zonal flow across the area, with a trough moving quickly east-southeast across the central Rockies. Jet energy ahead of the trough is helping to produce areas of pcpn across the forecast area. Temps across the forecast area range from the mid 30s over northeast WY and the higher Black Hills to the upper 40s over south central SD. North- northwest winds will become breezy in many areas tonight as area of low pressure passes southeast of the region and secondary front passes through at least northern and eastern portions of the area.
632 PM EST Fri Nov 17 2017 High pressure will be overhead through this evening, then move offshore late tonight. A much warmer southwest flow will overspread the area Saturday, ahead of a cold front that will cross the region Saturday night.
Upper level trough is currently passing overhead this afternoon.
Satellite shows cooler cloud tops along with increasing echoes on radar across western SD late this afternoon. Jet stream lift along with the short wave trough coming in from the west were responsible for these clouds and light rainfall. It will feel much colder with the winds and temperatures with highs in the upper 20s far northeast to the lower 40s southwest.
Increased energy ahead of the trough will bring increased snow amounts and rates to the higher terrain for the next few hours. This could greatly impact driving conditions over the higher passes between 3 and 5 pm. Lightning has been seen on WV over the higher terrain and into Weld county so some thundersnow could be possible. Elsewhere a cold front has entered Weld county and south of Wyoming a few hours ahead of current model guidance. As the cold air moves south along the urban corridor in conjunction with the added moisture and lift associated with the trough a light rain and snow mixture will be possible this evening. QG energy will go from -15 mb/hr to +30 behind the trough so precipitation and gusty winds will decrease quickly behind the trough given the strong subsidence.
A cold front moving across the region will bring cooler temperatures and an end to gusty winds for most, as a storm system exits the region.
702 PM EST Fri Nov 17 2017 High pressure will slide to the east tonight, with rain chances increasing Saturday ahead of approaching low pressure and a cold front.
In the short term, look for dwindling chances for precipitation this afternoon and cooler conditions Saturday. Cool Canadian air will accompany the high, creating below average temperatures for most locations in western and central ND.
High pressure builds across the region on Saturday with sunny but cool conditions.
Comfortable seasonal temps continue tonight and into Saturday with low temps in the low 50s to lower 60s. Weak high pressure and relaxed gradient for light winds and slight seas through Saturday.
Upper level trough was moving over the western states this afternoon. The trough will continue to progress east overnight and across eastern Kansas through Saturday morning. A cold front was located across south central and southeast Nebraska at 20Z will move southeast this evening and overnight across eastern Kansas shifting the winds to the northwest. With the passage of the trough by early afternoon rain chances will end from west to east across cwa through the late morning hours.
A ridge will be over the area on Saturday with some mid and high clouds moving through the ridge and some showers possible along the Washington Cascades.
825 PM MST Fri Nov 17 2017 Evening water vapor loop showed the mid/upper level trough axis from western WY through central UT. Cold front that moved through the CWA earlier this afternoon extended from southeast UT across central CO and KS, with an extensive band of post-frontal precipitation. Further east, most areas across the High Plains have been in the warm sector of the frontal system, which has been stationary across the area, so even as the rain changes to snow this evening, accumulations should be less than two inches on grassy surfaces.
451 PM MST Fri Nov 17 2017 Small upper level short wave troughs along with pockets of low dew point depressions have led to isolated showers developing over part of the forecast area. Strong cold front will sweep through the area tonight bringing windy conditions and a good chance for light rain and light snow. There is the potential for the precipitation to mix down wind gusts of 45-50kts during the overnight hours with a wind max behind the upper trough axis.
850 PM EST Fri Nov 17 2017 High pressure will be overhead through this evening, then move offshore late tonight. A much warmer southwest flow will overspread the area Saturday, ahead of a cold front that will cross the region Saturday night.
845 PM EST Fri Nov 17 2017 Northwesterly winds will diminish this evening as high pressure continues to build in form the west. The high will crest across the area early Saturday before gradually sliding offshore. A warm front will lift northward on Saturday night with a mix of rain showers south and rain/snow in the north.
A colder and drier air mass will develop over the region tonight through Saturday as high pressure builds across the area.
otherwise expect breezy south/southwest winds to persist ahead of approaching cold front. Focus then turns to a fast moving cold front which is currently through far northwest KS. These winds along with temps some 20 to 30 degrees cooler than today will make for raw Saturday.
537 PM CST Fri Nov 17 2017 Strong southwest winds expected overnight ahead of a cold front that will move across the region on Saturday. Otherwise, MVFR ceilings possible ahead of the cold front from 18/06Z-18/18Z. Expect the trailing cold front with this low to sweep from NW to SE across the ArkLaTex and SE OK after sunrise throughout Saturday. Expect wind advisory criteria to continue behind the cold front during Saturday through sunset with the end of daytime heating.
931 PM EST Fri Nov 17 2017 A strong cold front crosses Saturday night.
These showers are developing in response to isentropic lift and a strengthening low level jet which is aiding to enhance a theta-e ridge over western KY/southern IL. Low pressure now is over Kansas with a High pressure center to our east. The gradient in between will tighten tonight, starting to bring in some warmer and more moist air. It will be one of those fall nights where the lowest temperature will be early this evening and then steadily rise under those southerly winds. A more solid line of showers should come through just ahead of the cold front in the mid to late afternoon hours.
Low pressure was located in northeast Kansas with a warm front into central MO. Low pressure will be tracking across northern MO into central IL, pulling a strong cold front southeast into the dvn cwa after midnight.
421 PM MST Fri Nov 17 2017 Small upper level short wave troughs along with pockets of low dew point depressions have led to isolated showers developing over part of the forecast area. Strong cold front will sweep through the area tonight bringing windy conditions and a good chance for light rain and light snow. There is the potential for the precipitation to mix down wind gusts of 45-50kts during the overnight hours with a wind max behind the upper trough axis.
806 PM CST Fri Nov 24 2017 Wx map shows weak cool high pressure ridge from the Central Gulf to the East Coast.
725 PM EST Fri Nov 24 2017 High pressure will bring mainly clear skies and mild temperatures to the region into tonight. A cold front will bring some light rain showers on Saturday.
Synoptic cold front is farther north into Nebraska and will arrive into northeast Oklahoma early Saturday morning. This will result in north winds and cooler temperatures on Saturday relative to today, though still mild.
Cooler air aloft will bring temperatures in the north central mountains down compared to this morning, while cloud cover across the valleys should keep temperatures in the Hayden to Steamboat corridor fairly similar to this morning. Breezy northwest flow aloft, due to a 100+ kt jet overhead, will keep conditions breezy in the high country of NE Utah through early Saturday morning and into the mid afternoon hours across western Colorado.
Shower chances return with the approach and passage of a Saturday cold front. Fries Upper-level trough swings through Saturday evening, injecting slightly deeper moisture and bringing cooler mid-level air. Highest PoPs will be maintained north of I-80 and in the higher elevations. Not expected much more than a coating for most locations north of I-80 and in the Ridges, but a few locations could see up to a half an inch.
Will keep sct to likely pops in the high country, with 10 to 20 percent coverage across the northeast plains. Cold front has pushed through Greeley an should push into the Denver area in 22-23z period. Dry and stable on Saturday with high pressure at the surface and aloft. A little cooler with the highs around 60 for Denver.
630 PM EST Fri Nov 24 2017 High pressure will extend over the area tonight with low pressure moving across to the southeast. A dry cold front will move through from the northwest Saturday night.
1021 PM EST Fri Nov 24 2017 High pressure provides dry weather through tonight. A cold front crosses Saturday with limited moisture.
841 PM EST Fri Nov 24 2017 A cold front will move into Northwest PA by morning and sweep southeast across the state Saurday with just scattered brief light rain showers as it passes.
turning cooler with rain/snow for Saturday. Very mild late November day across the northwoods, courtesy of deep and gusty southwest flow ahead of a developing cold front punching into western Wisconsin. Very dry low levels partially overcome by that strong waa, still resulting in some sprinkles/very light showers, particularly for areas north of the big bridge. Details: As mentioned, upstream wave and cold front will remain quick movers, set to slide across our area this evening, exiting stage right well before sunrise Saturday.
/Issued 243 PM EST Fri Nov 24 2017/ An upper level trough will drag a cold front through the state Saturday.
/Tonight through Saturday/ All concerns in this period will be near term associated with the approaching system and associated trough and weak frontal passage. Steep low level lapse rates and mixing have developed behind the trough and ahead of a surface pressure rise center over northeast NE at 19z.
648 PM EST Fri Nov 24 2017 High pressure will remain over the Carolinas through tonight then weaken Saturday. A dry cold front will approach from the northwest Saturday afternoon and cross our region Saturday night.
447 PM CST Fri Nov 24 2017 Breezy southwest winds will diminish this evening as a cold front approaches from the northwest. With the lower layers of the atmosphere remaining dry, only expect mid and high level clouds to accompany the front through the area. Temperatures will be some 10 degrees cooler on Saturday, but still remaining above normal for late November with highs in the upper 50s to lower 60s.
601 PM CST Fri Nov 24 2017 Weak cold front along the International Border will slip southeast tonight bringing some clouds into the north central. In the far north, a backdoor cold front now across south central Saskatchewan and into Manitoba will slide southeast this evening and tonight. As a proxy for defining the low level cold front - per visible satellite imagery and the NAM12/RAP13 925mb-850mb isotherms, the low level front and associated stratus deck is situated between the 0C to -2C isotherms. For Saturday, a mid level ridge over the northern Rockies will keep a northwest flow across the area. Highs Saturday will range from the lower/mid 30s Turtle Mountains, to around 50 southwest and south central.
High pressure will then quickly build southward into north central Nebraska tonight and continue through Saturday. Lows will generally range from the mid 20s to the low 30s. Saturday temperatures will remain mild for November standards, however, cooler than Friday.
Another cold front extending from western Lake Michigan, to just east of Iowa and over SE Kansas continued headed to the east. Lows should cool into the low/mid 40s with light south winds. Expect warmer temperatures on Saturday despite abundant cloud cover with highs in the 60 to 65 degree range near and south of the Tennessee River (via westerly flow just ahead of the front.