Aikyam-Lab/Synoptic-Bench huggingface dataset:
445 PM EDT Tue Oct 17 2017 Dry high pressure with cool mornings and warm afternoons, with temperatures moderating through the weekend.
A few readings in the lower 80s are possible south central this afternoon. A potent cold front will sweep from northwest to southeast tonight, prompting wind concerns for northern North Dakota, followed by more fire weather concerns Wednesday. A dry, but very strong cold front in terms of an abrupt wind increase and a temperature change, will plow through northwest North Dakota near midnight, and quickly sweep through central ND overnight. Much cooler Wednesday with highs in the mid 50s north to lower 60s south.
1137 AM MDT Tue Oct 17 2017 A ridge of high pressure centered over Baja CA will ride southeast and flatten through Wednesday as the next series of Pacific storms rides east along the US and Canadian border. The lower atmosphere is very dry, with precipitable water less than 0.
231 PM EDT Tue Oct 17 2017 High pressure will result in dry weather and a warming trend through the end of the week. Clear skies tonight as high pressure starts to slide off to the east. Ended up going with low temperatures cooler than most guidance given recent trends, but think above factors will keep frost from becoming too widespread, and thus will hold off on any frost headlines for now. Dry weather continues through this period as high pressure remains in control at the surface.
319 PM MDT Tue Oct 17 2017 Satellite WV shows an extensive ridge over the southern portions of the Great Basin with a warm belt of moisture moving up and into Colorado from the NW. This will help bring in an upper disturbance and sfc cold front Wednesday afternoon. For the rest of the evening conditions will be mostly clear with increasing mid level clouds and lows slightly warmer than last night. Upper ridging is over the CWA Wednesday night with weak flow aloft.
High pressure is stretched from South Texas to New England this afternoon.
Tonight: A dry cold front will move through the area this evening and through the overnight hours as it tracks off toward the Dakota's. Wednesday: High pressure builds into Eastern Montana which will help decrease the winds. Temperatures will be around 15 degrees cooler Wednesday than they were on Tuesday, which will be near normal for mid October.
The offshore wind is pushing the higher waves out toward open water. We will need another small craft advisory for Wednesday into Wednesday night due to increasing southerly winds ahead of an approaching trough of low pressure. A 850-700 mb thermal ridge will settle over srn WI this afternoon, while 925 mb temps rise to 13-14C.
A weak mid level trough is expected to pass through the area on Wednesday as a cold front moves into northwest Wisconsin. Would expect warmer temperatures with continued warm advection and a warmer start to the day. Highs temperatures on Wednesday are expected to be quite a bit warmer than normal, reaching the lower 70s at many locations. Wednesday Night Through Tuesday Quiet weather and well above normal temps will continue through the end of the work week as a large ridge of high pressure moves into the Midwest and Great Lakes.
211 PM EST Mon Nov 20 2017 Dry and cool high pressure over the region will move offshore tonight. Moisture will return beginning Tuesday as weak low pressure develops over the Gulf of Mexico and bring isolated showers to the region Tuesday and Tuesday night.
Upper ridge over the north central U. That will change though, as another potent upper low tracks from western Canada to near Lake Superior Tuesday.
It will be a quiet TAF period with high pressure in control.
Kanofsky A longwave upper TROF was over eastern North America early this morning, resulting in NW flow aloft over our region. At the surface, high pressure has moved off into the Mid and Deep South regions, resulting in a southerly flow for our region. At the same time, a tightening pressure gradient will result in strengthening southerly winds to 15-25mph with gusts to 35mph, with the highest wind speeds in northeast MO. TES An upper level trough will move eastward through the Great Lakes region and send a cold front southeastward through our forecast area Tuesday.
1235 PM EST Mon Nov 20 2017 Upper air pattern consists of a 500 mb trough in the ern U. this morning and a trough off the Pacific NW coast and another in the Canadian Rockies. This trough in the Canadian Rockies digs quickly southeast into the northern plains tonight and is poised to move into the upper Great Lakes.
The lowest temperature noted thus far was 19 in Winchester, with just about all other locations having lows of at least 28 degrees. As such, a Non- Precipitation Warning for Freezing temperatures was allowed to expire at 8 AM. The forecast otherwise for the rest of the day should feature slightly warmer temperatures, as generally sunny skies prevail across the the southeast CONUS. High temperatures later this afternoon should rise into the low/mid 50s, a category or two warmer than yesterday. Antecedent southeasterly flow will advect modified air towards the TN Valley on Tuesday which combined with the daytime heating will mean daytime highs should reach into the low 60s.
1248 PM EST Mon Nov 20 2017 High pressure today yields to southwest flow tonight and Tuesday. Cold front crosses Tuesday night. High pressure again through Thanksgiving.
The next cold front will arrive approx 12Z Tuesday with increasing north winds behind it. /issued 406 AM CST Mon Nov 20 2017/ An upper level trough will translate across the area this morning. The downslope component will lead to warmer than normal high temperatures and decreased RH value. On Tuesday, an upper level ridge begins to amplify west of the area.
Moisture will thicken enough over the higher terrain of the central mountains for snow showers to develop during the evening and particularly past midnight.
For tonight temperatures will be a few degrees warmer than last night and some areas may see temperatures steady off around midnight as winds gradually become more southerly ahead of the next frontal system. Highest pops will be over the coastal waters and for the land areas southeast texas will have the highest chances but still not that great.
201 PM EST Mon Nov 20 2017 Dry and cool high pressure over the region will move offshore tonight. Moisture will return beginning Tuesday as weak low pressure develops over the Gulf of Mexico and bring isolated showers to the region Tuesday and Tuesday night. Seasonably cool and dry this afternoon with high pressure over the area and light winds. Seeing some thin high level clouds moving into the region in advance of an upper level trough. An upper trough will dive into the Gulf of Mexico tonight. Models some indications of a coastal trough developing late tonight.
Temperatures have fallen below freezing across much of central Alabama this morning, with some locations across the northwest counties reporting middle 20s. This will produce slightly warmer afternoon temperatures today with highs in the upper 50s to lower 60s. Increasing southerly flow overnight will also result in much warmer temperatures with most locations staying above the freezing mark. We're under a highly amplified pattern with ridging across the Western US and a trough over the Eastern US.
High pressure was southeast of the CWA early this morning and surface winds have been out of the south this evening and so far overnight. Further west, temperatures remain in the low 40s. The front will not make it into the area tonight, so overnight lows will be more mild in the low to mid 40s with steady southerly winds. It looks pretty cold on Tuesday night as the cold air advects in with the Canadian high pressure system.
the area will see temperatures climbing into the low to mid 60s.
Chattanooga Airport, TN 57 37 60 39 / 0 0 0 10 Knoxville McGhee Tyson Airport, TN 54 36 59 40 / 0 0 10 0 Oak Ridge, TN 53 36 58 39 / 0 0 10 0 Tri Cities Airport, TN 53 29 59 37 / 0 0 10 10.
This will result in a deepening trough dropping into the Ohio Valley by Tuesday night. Consequently and with support from guidance went warmer in the west. Unfortunately winds will make it seem a little cooler than that.
Strong high pressure aloft will follow for the middle and latter portions of the week. Morning water vapor and H5 analysis place a low amplitude ridge over the intermountain region with a progressive short wave trough along the northern periphery over Washington state attm. For the remainder of the week, mid level ridging is forecast to quickly amplify along the west coast beginning this afternoon, then build eastward across the Great Basin by Tuesday, and remain in place through the remainder of the week.
/Tonight through Tuesday/ A cold front will enter northwest Iowa by 06Z this evening and push through the state by 12Z Tuesday morning. High pressure at the surface will build into the state for the rest of the day. Cold conditions will persist Tuesday night as ridge of high pressure passes across the state.
MAinly VFR conditions with breaks in precipitation and clouds this afternoon and tonight before a warm front arrives early Tuesday bringing a return of lower clouds and precipitation.
A cold front will pass through on Tuesday but will have little precipitation associated with it. Another cold front over the weekend will bring some rain and snow showers, although minimal travel impacts are expected at this time. The cold front on Tuesday is moisture starved as it comes through Michigan but models do suggest a band of rain showers developing along the front about the time it's exiting the state late in the day. The air behind the cold front late Tuesday and Tuesday night is plenty cold enough for lake effect, but as with the last few pushes of cold air the moisture is quite shallow.
Temperatures will range from the mid 30s in the west and far north, where skies will be clear, to the lower 40s in the east. We're under a highly amplified pattern with ridging across the Western US and a trough over the Eastern US.
The latest GFS and ECMWF have come into better agreement with regards to developing area of low pressure in the Gulf.
This transitions to a broad ridge/fast westerly flow across the country. Air mass has also warmer over the last 24 hours. Ukmet and the Canadian were doing a little better than the rest on the low level thermal field. 2 meter temperatures are cooler with the warm MOS about 5 degrees warmer. So raised maxes toward these warmer values. Strong cold front moves in later tonight which is slightly faster than what was shown yesterday. That and the cold air advection will make for a much cooler day. Cold front moves through early in the day.
1227 PM EST Mon Nov 20 2017 High pressure across the Ohio Valley this morning will move to the Carolinas this evening. A cold front will move east into the western Great Lakes tonight, and then across the remainder of the Great Lakes and Ohio Valley Tuesday into Tuesday night.
Temps have surged above guidance into the lower to middle 70s already across NE FL with upper 60s to near 70 expected across SE GA. Forecast remains on track as High pressure over the Carolinas slips offshore and while surface flow stays E/SE, steering flow just off the surface becomes more southerly and increases in deeper moisture will result in further increase in mid/upper level clouds becoming Mostly Cloudy towards morning. The southerly steering flow should usher in enough warm air advection to allow for Max Temps to push into the lower to middle 70s despite Mostly Cloudy skies through the day.
All areas are well into the 50s and 60s with several sites warming a few degrees warmer than forecast. This will all come to an end tonight though when the potent cold front moves south through the area.
Warm again on Tuesday, despite the passage of a cold front right around noon.
An upper ridge near Baja will be intensifying and moving slowly eastward through the week.
A trough located in southern Alberta will dig southeast to near the ND and MN border with Canada by late afternoon. The main forcing will pass well to the north of the forecast area, however a cold front is expected to sag southward across the forecast area this afternoon and evening. Tuesday brings a big change in temperatures in the wake of the cold front exiting the area early in the morning. Drier northwesterly flow brings cooler than normal temperatures with highs only reaching the upper 30s.
Should see about 3-6 inches over the higher peaks later tonight into Tuesday morning before it tapers off. Much cooler east of the mtns Tuesday as the front backs up against the mtns. The front should begin to retreat back east Tuesday night as lee troughing develops over the high plains.
259 PM CST Mon Nov 20 2017 A low level jet ahead of an approaching cold front will aid in producing strong winds through much of the night tonight. Despite the strong south-southwest winds ahead of an approaching cold front, moisture content of the air mass will only marginally increase. Low temps tonight will be held warmer than normal due to windy conditions, despite mostly clear skies. Highs on Tuesday will likely come early in the day, as the cold front reaches I-55 by around 16z/10am, then exits to the southeast by 21z/3pm. Morning/daytime highs will range from the low 40s near Galesburg, to the low 50s south of I-70. Clearing skies will help low temps Tuesday night dip into the low to mid 20s.
Today will be one of the warmer days of the week with strong WAA out ahead of an approaching cold front. Tonight a cold front will move through the area with strong CAA behind it.
Cold airmass within this ridge will be realized with highs struggling to rise much above 60 degrees again today. Models show a broad trough moving into the middle of the country from the Canada/US border to the Gulf coast tonight. Amplification of both troughs will occur as a reinforcing cold front passes across the CWA Tuesday night. The CWA will generally remain under troughing through the rest of this week and through the weekend. This will be the case due to the mid week trough's lack of progressiveness and a deep trough diving out of Canada into the eastern 1/4 of the CONUS this weekend. Pressure gradient will relax through Tuesday as the associated ridge axis will remain north of the coastal waters.
A mild day ahead as winds turn southwest and then west as low pressure slides southeast across Manitoba into NW Ontario. By 00z Tues, low pressure will be just north of Kenora Ontario. As the low moves east colder air will drop south along with a wind shift to the northwest with wind speeds increasing to the 20 to 35 mph range.
Weak northwesterly upper-level flow will amplify through the week as a strong ridge remains anchored over the western U. Strong cold- air advection and gusty winds will create fairly blustery conditions on Tuesday with highs barely reaching above the freezing mark in our north.
Issued by National Weather Service ALBANY NY 330 PM EST Mon Nov 20 2017 A warm front will bring some light snow or flurries to central New York late this afternoon, followed by clearing tonight. Tuesday will be mild with plenty of sunshine then a cold front will cross the area late Tuesday night accompanied by some rain and snow showers.
For this afternoon, warm air advection ahead of an approaching short wave trough will cause 925 mb temperatures in both the GFS and ECMWF to warm into the 6 to 9C range. As a result, went more toward the warmer GFS and ECMWF solutions with high temperatures ranging from the mid 40s to mid 50s. After midnight, a Canadian cold front will move southeast through the forecast area.
132 PM CST Mon Nov 20 2017 After a quiet night an upper level trough moving across southern Canada will drag a dry cold front through the forecast area during the day Tuesday.
Weak convection is about to move out of the northern coastal plains as the short wave trough continues to move to the east. Short wave trough moving through South Texas early this morning. Short wave trough will move east of the region by this afternoon with only lingering slight chance of rain over the offshore waters.
/Issued 1038 AM EST Mon Nov 20 2017/ Temps/dewpts largely on track for near term so no changes made with a mostly clear and dry ridge dominated Monday on tap. A broad area of high pressure will rule the lower levels. Overall have kept just slight chance over the area given weak lift and weak lower level ridge influence. Southern stream energy is quite strong as it rotates through the lower Mississippi Valley and warrants slight chance to low end chance pops despite the limited moisture.
Extensive high pressure resides over much of the eastern and southern CONUS. Aloft, a modest trough axis is shifting east over south-central Canada through the Mississippi River Valley with ridging over the southeastern CONUS and over the western states. The cold front of this system will push through MN/WI late this evening into the early morning hours. The trough will become more pronounced overnight as a cutoff low forms within it, helping enhance subsidence on the backside within strong northwest flow. The other noticeable change will be the strong cold air advection associated with the cold front. Highs tomorrow will be 20-25 degrees cooler than the temperatures experienced this afternoon, with lows tonight ranging from the upper teens to the mid 20s.
1007 AM CST Mon Nov 20 2017 Starting the day much warmer today, with many sites running 10 to 15 degrees above this point yesterday. A mild day ahead as winds turn southwest and then west as low pressure slides southeast across Manitoba into NW Ontario. By 00z Tues, low pressure will be just north of Kenora Ontario. As the low moves east colder air will drop south along with a wind shift to the northwest with wind speeds increasing to the 20 to 35 mph range.
201 PM EST Mon Nov 20 2017 High pressure today yields to southwest flow tonight and Tuesday. Cold front crosses Tuesday night. High pressure again through Thanksgiving.
1020 AM MST Mon Nov 20 2017 Water vapor shows large ridge over the western CONUS, with a trof extending from Alta southwestward to just offshore the Pac NW. At the surface, low center is over southern Sask with broad trof over the Northern Plains, and associated cold front over southern Alta. Thickness ridge is expected to peak over the cwfa today, with gusty w/nw boundary layer flow pushing temps into the 60s east of the Black Hills. Cold front is then expected to drop into the cwfa late this afternoon into tonight. Upper ridge quickly rebuilds across the western CONUS and leads to dry and very mild conditions mid to late week.
Return southerly low level flow along the backside of the departing high will advect warmer air back into the region. Lows tonight will also be warmer with all locations above freezing, in the middle to upper 30s. A cold front will push through the region Tuesday night with much cooler weather conditions expected behind the front.
1101 AM MST Mon Nov 20 2017 Early morning satellite imagery and u/a hand analysis shows a moderately strong atmospheric river approaching the central coast of NOAM with a low pressure system just off the left coast of N. Top down saturation will need to occur to get the lower atmosphere primed and the jet will help but the fast movement of this storm will not leave much time to make a big snow storm. So again the high peaks will stand the best chance of seeing accumulating snow. It will be cold enough for snow in the lower elevations but accums look to be 2 inches or less with possibly some sleet mixed in during the pre-dawn hours as the most convective part of the storm passes through.
Upper trough will slowly work into the Southeast U. Water vapor continues to show considerable high clouds ahead of the trough. /issued 350 AM CST Mon Nov 20 2017/ Early morning sfc analysis shows high pressure centered over the lower Mississippi Valley, ridging swwd across the forecast area with a light nerly low-level flow in place helping maintain our recent cool conditions with observations showing temps ranging from near freezing nern zones to lower 40s srn zones.
234 PM EST Mon Nov 20 2017 High pressure over the area will shift offshore late tonight and into the day on Tuesday. A weak low pressure will develop off the Florida coast on Tuesday, and then track quickly northeastward along the Southeast coast Tuesday night.
Varying opaqueness will lead to filter sunshine through Tuesday before high clouds retreat northward due to strong ridge building over the southwest CONUS during the second half of the week.
/DC/ This forecast update was only to expire the freeze warning as temperatures are quickly warming above freezing areawide. The region continues to be under the influence of the strong surface ridging building off to our east into the Appalachians. Expect return flow to slowly move in & the warming trend to continue, with a nice warm & dry afternoon in the lower 60s. Another cold night is on tap tonight with lows falling back into the low/mid 30s over the area.
Temperatures should remain slightly cooler than average with highs rising into the upper 60s at most locations.
257 PM MST Mon Nov 20 2017 Fast moving Pacific wave will work across the northern and central zones tonight as it slides down the front side of strengthening Great Basin ridge. Dry and mild conditions will be in place through much of the Holiday weekend as a strong ridge of high pressure remains parked across the western U.
We'll see periods of clear to partly cloudy skies today with temperatures this afternoon topping out perhaps a degree or two warmer than yesterday.
Snow levels will remain very high, above 10,000 feet as warmer air mass expands over the region. Locally breezy conditions over far northeast CA/northwest NV will wind down this evening with generally light winds over lower elevations, but Sierra ridge winds will remain gusty as 700 mb flow of 25-30 kt continues.
Max temps today will be similar to yesterday with mid-upper 60s expected for most areas, possibly reaching the lower 70s across SW areas. On Tues, expect temps to warm into the mid 70s with scattered showers developing offshore and near the coast as a mid/upper level trough amplifies over the area. Models are in good agreement that our next cold front will move across Tuesday night into Wed morning.
High pressure will continue to strengthen over Arizona through much of the coming week.
Above normal temperatures will prevail again today and tonight before another cold front ushers in more seasonable air on Tuesday. A ridge of high pressure at the surface will sink southward across the region on Tue night and early Wed bringing much drier air and light winds with more seasonable temperatures for late Nov. Another cold front will arrive late Fri into early Sat bringing more seasonable air back into the area with highs in the 50s on Sun. A cold front will move south across the area late tonight through Tuesday morning, with cooler temperatures and strong/gusty north winds in its wake.
349 PM CST Mon Nov 20 2017 A little cooler than expected with the cirrus slowing a bit to 35KTS with amplified low now on Gulf coast.
Low pressure currently across southern Saskatchewan will shift to southern Manitoba this afternoon, and exit across southern Ontario this evening. A strong cold front will drop south through the area this evening (sinking south of the ND/SD border already prior to 00Z). Behind the front, expect breezy northwest winds and cooler air.
Tuesday will be pleasant with high temperature recover into the lower 80s under mostly sunny to partly cloudy skies and light southeast to south winds. The next front will be on the way Tuesday as a Canadian air mass plunges south over the plains ahead of a large ridge over the western United States. An embedded mid level short wave trough will roll down the eastern side of the ridge and into the lower Mississippi Valley/northwest Gulf Tuesday night, adding some vertical instability to the surface front.