Aikyam-Lab/Synoptic-Bench huggingface dataset:
High Plains lee troughing will eventually develop through the overnight and into Sunday. A large, amplified trof will move across the Great Basin. Low level warm air advection downstream across the High Plains will increase significantly with 850-hPa temps peaking in the mid 20s across the High Plains.
120 AM EST Sun Nov 26 2017 A dry cold front will move east of the forecast area tonight.
Winds are expected to gust near 20kts from late mrng thru aftn in advance of a weak cold front that will approach the region tomorrow aftn. Light winds late Sunday night may allow for some radiational freezing fog or heavy frost that could cause slick runways. Winds are expected to gust near 20kts from late mrng thru aftn in advance of a weak cold front that will approach the region tomorrow aftn. Hence temperatures will begin to level off later tonight in the lower to middle 20s. Breezy southwest winds will carry warmer air into the area during the day as 925H temps warm to 5-7C. Could even be a little warmer if cirrus clouds do not increase as expected.
1221 AM EST Sun Nov 26 2017 VFR conditions will continue throughout the TAF cycle with high pressure in place.
Otherwise, cooler conditions will prevailing across the region today, as drier and cooler air filters into the region behind yesterday's weak cold front. That being said, temperatures will still be 3 to 8 degrees warmer than normal. High pressure will build into the region for the first part of the work week, continuing our very dry weather.
/Today through Tonight/ A high pressure ridge draped along the Mississippi River valley will move off to the east today, allowing for a return of modest southwest winds and warm air advection.
A large mid and upper level trough lies over the eastern half of the CONUS today, with a short wave trough rolling through from the lower Mississippi valley into the northern Gulf waters. This will push a dry cold front across the local area.
/issued 212 PM CST Sat Nov 25 2017/ Dry and seasonably mild surface ridging across the whole of the southern Great Plains will drift southeast overnight ahead of upper ridging for Sunday and Monday. Ensuing SW surface flow by daybreak Sunday will help establish a lee trough in eastern NM, which will only sharpen by Monday once stronger and deeper SW flow develops behind the upper ridge.
Sunday's weather will be very similar to yesterday's, as the Northern Plains remains under the influence of a large upper level ridge and weak pressure gradient.
1104 PM CST Sat Nov 25 2017 240 PM CST Quiet weather continues in the short term with high pressure ridging to move over tonight. While 925mb temperatures warm about 3C more than today, the starting point in the morning will be cooler than today.
A cold front that moved across the region earlier this afternoon was located well to the south and east of here. After a rather mild day with highs in the low/mid 60s (normal highs were 60/59 in Huntsville and Muscle Shoals respectively). With clear skies, light winds, and the surface ridging building towards the region, a rather chilly and possibly frosty night is in store, with lows in the mid 30s, a few degrees above running average lows. High pressure builds east towards the Tennessee Valley on Sunday and becomes firmly entrenched on Monday. Cooler and drier air will push into the area in response. Some frost may return on Sunday morning with lows in the lower 30s.
A large scale upper level trough will continue to reside over the southeastern CONUS through tonight. At the surface, a weak cold front will move southeast across our area during this period. Despite some forcing from the front and upper trough, very dry mid- level air is expected to prevent any rainfall across our area. In the wake of the cold front, lows are expected to drop into the mid-upper 40s inland by early tomorrow morning with skies gradually clearing from west to east. A cold front will push to the south of the local area Sunday but upper troughing will linger at least through Monday.
In the wake of yesterday's front, slightly cooler, though, still above normal high temperatures are expected today.
Overnight temperatures will be a bit warmer than last night at most locales as the airmass moderates and warms. Upper ridge axis moves overhead with unusually high 500 mb heights near 5780 meters. With a dry airmass, minimal cloud cover and warmer than normal airmass, maximum temperatures expected to soar into the 60s to lower 70s at lower elevations, with near record high temperatures at most locations. Slightly cooler compared to Sunday across our northern counties, which will be in the post cold frontal airmass.
North Dakota remains under a broad ridge across the northern plains tonight. Mid/high level clouds will accompany this warmer air. A cold front will swing through Monday morning. There are some indications that temperatures could actually reach the low 70s.
Lows tonight will be in the middle 30s, with highs Sunday back in the lower to middle 60s. Pressure gradient tightens on Monday between the departing high and a cold front over the high plains. These strong southerly winds will usher in even warmer temperatures with near 70 highs. Record high temperatures for Monday are in the lower to middle 70s.
The marine air will accelerate inland on Monday, as an upper-level trough swings overhead, accompanied by strong and gusty westerly winds over the mountains and deserts, and the chance for scattered rain showers along and west of the mountains.
225 AM EST Sun Nov 26 2017 High pressure currently in control of the weather over the lower Ohio River Valley this morning. Temperatures have dropped into the low 40s to upper 30s at this hour, and expect temperatures to fall near the freezing mark for most locations by sunrise. High pressure over the southern Plains will slide eastward today toward our region. Winds will gradually turn to the west as the high moves toward us. Surface winds will shift to the southwest, and we'll see some warmer temperatures during the day Monday with mostly sunny skies.
A weak and mainly dry cold front draped over the N Gulf Coast region this morning sinks southward today as reinforcing high pressure to quickly build into the region this evening/tonight through Monday with drier air filtering into the area.
1000 PM MST Sat Nov 25 2017 Dry high pressure with westerly flow aloft will be over western and central Wyoming Tonight through Sunday evening with warming continuing. Later Sunday night the leading edge of Pacific moisture ahead of a Pacific low pressure trough will move into the western mountains with higher elevation snow and valley to mid mountain rain showers developing with increasing winds. Ridgetop winds could gust from 45 to 55 mph, especially above 10000 feet. Rain is expected with snow over the higher elevations of the Bighorn mountains.
Some light patchy fog may be observed at a few sites early in the period but the time window will quickly close as drier air filters into the lower levels. Lows tonight will be in the 40s (for most of the area) with highs in the lower 60s tomorrow. High pressure moves into the region early tomorrow and keeps the area generally clear/dry through the day.
240 AM EST Sun Nov 26 2017 A cold front will pass through the area late today into tonight with scattered showers, followed by colder air and lake effect snow showers into Sunday. Wave passes and a few hours after sunrise, lingering showers will depart as ridging builds in.
another warm and dry day on tap for the area as H5/H7 ridge that had been over the western portion of the country. The upper ridge axis will crest over the region by tonight into Monday morning. Warmer night tonight expected despite clear skies with ridge axis cresting over the area. allowing for lows to drop down to the upper 30s to the lower 40s. another warm and dry day for the area dominated by subsidence with strong upper level ridging. 850 temps thru the day reach +17c to +23c and will give the area daytime highs in the upper 70s to the lower 80s as a result(35 to 40 degrees above normal).
1102 PM EST Sat Nov 25 2017 A cold front crosses the area tonight. High pressure builds back in from the west Sunday and Monday.
300 AM EST Sun Nov 26 2017 Pacific high pressure will build into the Carolinas through Monday.
Sided closer to mos guidance with lows tonight given the strong sfc inversion noted in forecast soundings with readings in the lower to middle 30s. Have continued to trend temperatures upwards into the low 70s across most of northeast Kansas. As the mid level trough moves eastward across the Central Great Basin, the pressure gradient across the central US increases allowing for gusty winds up to 35 mph during the afternoon and evening.
CDFNT on track to rather quietly pass through the area overnight, with the resulting slight uptick in N winds and BKN cirrus overhead really the only indicators of the front and associated upper trof. This afternoon's surface analysis indicates a cold front extending from the Tennessee Valley southwestward into south-central Texas. This cold front is forecast to move through the region tonight into Sunday morning. Precipitation is not expected with the passage of the cold front due to weak forcing for ascent and a relative lack of deep layer moisture in place across the region. A reinforcing area of high pressure will build into the area on Sunday in the wake of the cold front. The airmass in the wake of the front is not all that much cooler which will result in near normal temperatures on Sunday and Monday.
406 AM EST Sun Nov 26 2017 High pressure will keep dry conditions across the region into mid week.
An area of high pressure will drift across the region tonight and into the Ohio River Valley Sunday morning. An area of low pressure will track across southern Canada and will push a cold front into the area Sunday afternoon. The main short wave trough with this system will remain across Canada, so very little forcing will occur over the area with the cold front. Model guidance continues to point to another warm, breezy day on Monday as upper level ridging overspreads the area.
330 AM EST Sun Nov 26 2017 High pressure builds back in from the west today and Monday.
1211 AM EST Sun Nov 26 2017 Following scattered overnight showers, high pressure will support dry weather and moderating temperature through mid week. The high temperature prognosis for southern zones was modified slightly using National Blend guidance.
1024 PM CST Sat Nov 25 2017 A ridge is positioned over the western half of the United States while a trough is now over the eastern half. Cooler air today following the passage of the cold front from yesterday will be replaced with warmer air to cap off this holiday weekend. There is a trough just off shore in the Pacific which will move onshore on Sunday night into Monday and push the ridge to the east.
High pressure to our west will slowly push across the state tonight bringing light winds and rather chilly temperatures, especially across the north. High pressure building into the midsection of the country this afternoon, and northwesterly winds are dominating behind the cold front from last night. Light winds become a little variable in the overnight hours as the ridge moves through the region. By morning, on the north side of the ridge, oriented from the Southern Plains up into the Ohio River Valley, the winds come around to more SSW to start the day. Sunday night, the lows remain in the upper 30s. With southerly winds and the thermal ridging over the western half of the country sliding to the east just a touch.
Present thinking is highs today will be a tad warmer than yesterday owing to the WAA. The high clouds will exit to the southeast early this evening. The pressure pattern of a deepening lee trough and high pressure centered within the TN Valley region will maintain southwest-west lower trop flow tonight and continued weak WAA.
An upper level ridge axis will reach the Northern and Central High Plains today. The upper ridge axis will extend over western Nebraska, as an upper trough moves inland from the West Coast. A strong thermal ridge will set up overnight, with 850mb temps range as high as 20C.
1104 PM EST Sat Nov 25 2017 A cold front crosses the area tonight. High pressure builds back in from the west Sunday and Monday.
327 AM CST Sun Nov 26 2017 High pressure will move from west to east across middle TN and set up return flow.
611 AM EDT Tue Mar 27 2018 Warm front early this morning.
Winds will come around to the southeast late Tuesday morning, but a cold front will turn winds to the north Tuesday evening.
High pressure will build over the region over the next few days with a warming and drying trend. Generally light winds are expected once the ridge builds inland tonight into Wednesday, although locally breezy northeast winds will continue over the mountain areas through this evening.
The backdoor front is in the transition of moving back north as a warm front. While the low levels are quite dry, the mid and upper levels have moisture.
A deep upper level trough extended from the northern Plains into Arizona early this morning. Just east of the trough, a 130+ knot jet extended from Baja California across the central High Plains into the upper Great Lakes. The upper level trough moves out over far western Kansas tonight with partly to mostly cloudy skies continuing.
Weakening high pressure will be Northeast of the region Today, then build to the East Tonight. As the flow turns from Northeast to East/ Southeast drier and warmer air will advect into region, yielding a decrease in cloud cover Today.
1237 AM CDT Tue Mar 27 2018 At the synoptic level, we will be within southwest flow as a deeply amplified positively tilted trough stretching from eastern Montana to southern California and headed east. Still appears that the mean trough will split as the northern branch takes off across the Northern Plains tonight and the southern part will be a closed low centered somewhere over Arizona. Although the increased wind speed will make it feel quite cool tonight, the increased mixing from the wind along with the continued sky cover will keep minimum temperatures in the lower to mid 30s and probably no colder.
334 AM EDT Tue Mar 27 2018 Warm front early this morning.
Back edge of the rain extends from near Dubuque to south of Kansas City, which is about where the cold front is located. Temperatures there have been several degrees cooler than the rest of the forecast area, but have reached the upper 40s as of 2 am. During the morning, the spread in temperatures from Bloomington southeast will narrow as the snow continues to melt, but some dropoff will occur with the cold front from Peoria northwest, before starting to rise a bit again later this morning. Late week storm systems remain a challenge, as a broad upper trough continues to evolve over central North America.
High pressure nosing down the lee of the Appalachians overnight will continue to reinforce the moist and cool low-level airmass. Dry conditions will prevail as no forcing will be present under the deep layer ridging. After mostly cloudy skies on Tuesday, cloud cover will continue to decrease Tuesday night and Wednesday, and highs should reach the lower 80s across much of our area on Wednesday afternoon under mostly clear skies.
400 AM EDT Tue Mar 27 2018 High pressure will remain in control today and depart the region tonight.
That being said, temperatures are expected to be a few degrees warmer than last night, and thus are not expected to be near critical thresholds for local agriculture. The warmer trend will continue, and today will be quite a bit warmer than yesterday. After that, a ridge of high pressure will continue the warming and drying trend. This warming trend will also coincide with a drying trend where the mid to upper slopes and ridges will start seeing moderate overnight recoveries as easterly winds help to dry things out. Models continue to push back the pattern change from the Ridge to another Atmospheric River type event.
344 AM CDT Tue Mar 27 2018 Light freezing drizzle, pockets of light snow, and dense fog early this morning, then conditions improve later today. Early this morning cloudy skies with light freezing drizzle, and a few pockets of light snow, along with locally dense fog was found across the Northland. A 500 mb trough was just to our west, while the 700 mb trough was over the western portions of the CWA. Overnight lows will dip into the low 20s to low 30s. Expect highs in the upper 30s northwest and near Grand Marais, to the low 50s over north-central Wisconsin. A long wave trough slowly crosses the region.
Short term models continue to indicate strong lift ahead of incoming trough channeled over central MN into the northeast through about 00z. We are near critical level with boundary layer temperatures around freezing just to the northwest of the metro. The higher totals should lift along and north of I94 and over Morrison and Mille Lacs Co. More sunshine and relatively warm conditions should develop for TUesday into Wednesday, ahead of the next cold front.
404 AM EDT Tue Mar 27 2018 High pressure will remain in control today and depart the region tonight.
Surface wise, the aforementioned shower activity is the result of a back door trough aligned across this area with a strong, continental high pressure system centered over the mid Atlantic coast.
An upper closed low sits over Arizona with an upper ridge axis running from western New York down through Cincinnati, Ohio. At the surface the low is west over northeastern New Mexico and the high is just north of Maine. Expect lows in the mid to upper 50s with winds from the south at 10- 15 mph and gusts in the low 20s.
312 AM EDT Tue Mar 27 2018 High pressure ridging over the area will continue today with northeasterly surface flow gradually becoming southeasterly.
318 AM EDT Tue Mar 27 2018 Warm front tonight into Tuesday.
408 AM EDT Tue Mar 27 2018 Warm front early this morning.
224 AM CDT Tue Mar 27 2018 Sunshine returns for much of the area today along with warmer temperatures the next couple of days, however rain returns to the forecast later Wednesday.
339 AM CDT Tue Mar 27 2018 At 3 AM, a cold front extended from the western tip of Upper Michigan to Dubuque Iowa. For tonight, a ridge of high pressure will build across the region. On Wednesday, southwest and west winds ahead of an approaching cold front will warm 925 mb temperatures into the 4 to 9C range. Meanwhile, the remainder of the area will see high temperatures ranging from the lower 50s to lower 60s. On Wednesday evening, a weakening cold front will move southeast through the area.
408 AM MDT Tue Mar 27 2018 Today, an upper level low over southern AZ, is expected to track eastward, becoming an open wave tonight and tracking acrs NM. At 3 am snow was ongoing over the mtns and along the I-25 corridor, with a few warmer pockets of rain or a mix of rain and snow. At this time, with decreasing chance for precip many areas this afternoon, that temps will probably be in the 40s to lower 50s acrs the sern plains, with the warmest readings mainly along the lower Arkansas River Valley. The high valleys will likely see highs in the 40s this afternoon.
640 AM EDT Tue Mar 27 2018 High pressure will remain over New England through today will fair weather expected. A warm front will approach tonight with increasing clouds and perhaps some light precipitation late tonight through Wednesday morning.
The aforementioned convection is already ongoing across Eastern Oklahoma and Western North Texas ahead of an approaching cold front.
High pressure will yield dry weather through much of the week.
/Issued 944 PM CDT Mon Mar 26 2018/ Shower and thunderstorm coverage continues to increase this evening within axis of anomalously high moisture east of upper low moving through the Desert Southwest. Flight conditions will deteriorate overnight into Tuesday morning as a cold front moves south across the area, and the coverage and intensity of rain and thunderstorms increases. /Issued 349 PM CDT Mon Mar 26 2018/ Afternoon water vapor imagery shows closed upper low over southern CA, with a broad and moist southwesterly flow aloft across the southern and central Plains. Latest mesoanalysis places cold front into northwest Oklahoma, with gusty northwest winds from Medford to Seiling, with a dryline mixing into southwest Oklahoma southwest into Texas.
A cold front will move south into the Big Country Tuesday evening, and make slow progress into our central counties Tuesday night. An upper level low will develop over Arizona tonight, and then track slowly east across southern New Mexico Tuesday night. This system is progged to open into a trough move east into West Texas on Wednesday. Chances for showers and thunderstorms will continue across our area on Wednesday, with rain chances shutting off as the trough axis shifts east across our area.
344 AM MDT Tue Mar 27 2018 Upper level trough passing through the Rockies has split as advertised with northern stream energy driving out into the plains and southern half closing off over south-central Arizona. This activity will continue to get dragged west and south as the upper low over southern Arizona starts pushing eastward and wraps additional moisture northward across New Mexico up into our southern mountains and valleys. As the shallow trough over the central U.
A cool front has made it into the NW 1/4 of the region bringing slowly drier and cooler air. Overall highs in the lower 40s NW over snow covered locations to around 50F far east and southeast sections.
425 AM EDT Tue Mar 27 2018 Periods of showers will occur as a cold front slowly approaches and then moves across the area into Wednesday.
Forecast temperatures look alright, with only slightly warmer lows tonight due to less cloud cover.
High pressure then settles in over the region late tonight through the day Tuesday. After a cool night with lows in the 20s tonight, look for temperatures to rise to range from the lower 40s in west central Minnesota and far northeastern South Dakota, to the lower to mid 50s west of the Missouri River Tuesday afternoon.
High pressure builds into/across southern Ky during the day Wed.
A weak system will brush by northern Utah late tonight and Wednesday with a warm front. High pressure will build in across the region in the wake of this feature bringing a warming trend.
259 AM EDT Tue Mar 27 2018 High pressure will remain over New England through today will fair weather expected. A warm front will approach tonight with increasing clouds and perhaps some light precipitation late tonight through Wednesday morning.
SHORT TERM (Today through Wednesday): Mid level ridging over the Gulf will fade eastward as a mid level low slowly cuts off over the southwest United States. Another round will ignite upstream on Wednesday, especially as a cold front approaches the area in the afternoon.
346 AM CDT Tue Mar 27 2018 Weather impacts this morning during the predawn hours stem from saturated airmass producing some localized patchy freezing drizzle across west central MN into Lakes Country. Will include a mention of freezing drizzle through the early morning with minimal accumulation. WAA regime expected to bring a band of precip across the northern half of the FA with a rain snow and possible freezing rain mix. Road temps will be around the freezing mark and some patchy slick spots will be possible Wednesday morning. NW winds at 20mph gusting to 30mph behind the front will bring cooler air to the region with temps steady to falling in its wake as it pushes through during the first half of Wednesday.
High pressure settles in with dry air. /issued 815 PM EDT Mon Mar 26 2018/ Backdoor cold front pushed across the region late this afternoon with a surge of east to northeast winds which across the forecast area which persists this evening. High pressure will build down the eastern seaboard and over Florida in the wake of the front with partly cloudy skies and mild dry conditions expected through mid week. High temperatures will run in the low to mid 80s over the next couple of days.