Aikyam-Lab/Synoptic-Bench huggingface dataset:
847 AM CST Thu Jan 19 2017 Placed areas of fog/freezing fog back in the grids for the western zones for the next 1-2 hours. A weak closed upper low was slowly moving moving east over the central High Plains early this morning. With a fairly dry atmosphere over the central Plains, only some scattered mid and high level cloudiness was being generated by this upper low. At the surface, however, a low pressure trough was situated along the Kansas/Colorado border. Light winds were present in the base of the trough while farther east, southerly winds continue to push increasing low level moisture into central and parts of western Kansas.
Winds will diminish by sunset, with mostly clear skies expected tonight, with lows in the lower to middle 40s.
810 AM EST Thu Jan 19 2017 A short break from precipitation today as high pressure slides across the area. The toughest part of the forecast is how fast, if at all, the low clouds will finally disperse from the area. Latest models are coming into good agreement on slowing down the onset of rain tonight, as the upper level low over the Central US will weaken and spin further to the north by Friday morning. By Friday afternoon, the main moisture stream will have moved to the northeast, with the trough axis following closely on its heels.
The elongated upper low that has been situated to our west and southwest over the past couple of days will finally get a move on as jet energy punches in from the Pacific and acts as a kicker.
552 AM CST Thu Jan 19 2017 LIFR/VLIFR cigs with reduced vsbys in FG will persist this morning across the region, as a warm front will continue to gradually lift N across NE LA/SE AR/N MS through the afternoon. Drier air aloft mixing E with the passage of the associated upper level low this afternoon should result in the low cigs eventually mixing out over at least the Wrn sections of E TX by mid to late afternoon, but did maintain MVFR cigs for the GGG/LFK/SHV terminals with IFR cigs expected to prevail farther E across much of N LA/SW AR. Conditions will improve on Friday with temperatures rebounding to U60s to L70s South of I-20; Southerly winds will help usher in humid air from the Gulf of Mexico ahead of the short wave trough in the SW United States.
1050 AM EST Thu Jan 19 2017 High pressure will settle overhead today before moving off to the east tonight.
644 AM EST Thu Jan 19 2017 High pressure will move east today, while low pressure approaches from the southwest. Expect widespread rain showers this evening through tonight when the low is forecast to travel to northern Ohio.
A strong north flow to the west over Washington and south flow over the area today will continue to bring rain to many valleys, with some locations like Missoula and Columbia Falls seeing some freezing rain this morning. Winter weather advisories remain out through about noon today for the continued freezing rain and snow. Friday, a weak cold front will cause the snow levels to quickly drop along with the amount of precipitation. A large trough that forms along the Pacific Northwest coast will eject a few waves of showers across the Northern Rockies over the weekend.
Will then be watching a mid-level trough/pv- advection move toward/into the area this afternoon through tonight. Otherwise, highs today will remain mild in the upper 30s to lower 40s with lows tonight in the lower /middle 30s. will see that mid-level trough continue to lift northward through central and northern WI with lingering rain chances. Rain chances continue for Friday night as yet another mid-level trough/lobe of pv-advection rotates northward into the area.
542 AM CST Thu Jan 19 2017 Low clouds working slowly north at 08Z from western and central Kansas into central Nebraska in advance of 850mb trough over western Nebraska. 500 mb closed low was also in the area centered over south central Nebraska. Cloudy skies are expected to gradually overspread the forecast area today as upper low moves toward northeast Kansas with short range models showing some slight deepening during this time. Temperatures remain above freezing across the area early this morning and are expected to climb into the 40s by afternoon.
619 AM EST Thu Jan 19 2017 A pressure ridge in the forecast area will weaken today ahead of an approaching warm front.
643 AM CST Thu Jan 19 2017 Main story this morning continues to be the dense fog, which has now moved into the highway 2 corridor east of Grand Forks. Areas that hold the fog/stratus longer will stay cooler today. Models continue to show the potential for some light drizzle or freezing drizzle, so did keep that mention too.
A weak closed upper low was slowly moving moving east over the central High Plains early this morning. With a fairly dry atmosphere over the central Plains, only some scattered mid and high level cloudiness was being generated by this upper low. At the surface, however, a low pressure trough was situated along the Kansas/Colorado border. Light winds were present in the base of the trough while farther east, southerly winds continue to push increasing low level moisture into central and parts of western Kansas.
The upper low and short wave will continue northeast today while the front slowly pushes east.
448 AM CST Thu Jan 19 2017 Southerly flow and increasing moisture has advected into the local area behind an effective warm front early Thursday morning. Aloft, southwest flow is limiting moisture fields in the mid and upper levels as a broad upper-level trough continues to push through the Central Plains today. With that said, temperatures will still be near 10 degrees above normal, ranging from the upper 40s to lower 50s south of the Missouri River, down to the lower 40s across northeastern Missouri.
1027 AM EST Thu Jan 19 2017 High pressure will move east today, while low pressure approaches from the southwest. Expect widespread rain showers this evening through tonight when the low is forecast to travel to northern Ohio.
On Friday into Friday night, nva will combine with weak ridging and therefore, little if any pops will be carried.
606 AM CST Thu Jan 19 2017 Upper low over the Central Plains will be the primary weather-maker across central Illinois over the next 24 hours. Given copious deep-layer moisture and strong forcing from approaching upper low, showers will become numerous across the area this afternoon. Several models are producing light QPF across the area Friday night as a warm front lifts through central Illinois.
As a closed upper low currently over the Oklahoma/Texas panhandle region lifts towards the Upper Midwest this evening and tonight, expect precip chances to increase from the south through the afternoon and should peak across northern Illinois and northwest Indiana this evening and overnight. Storm total QPF amounts of half to three quarters of an inch are generally expected, with the highest amounts across the eastern half of the CWA. We should see a brief lull in rain during the day Friday as our upper low departs northeast of the area and weak mid/upper ridging builds overhead.
High pressure remains in place across the region, with upper-level ridging aloft. With high pressure overhead, winds have decoupled across the mainland, with patchy fog possible in the interior through daybreak.
On Friday, even warmer weather is forecast as both the 19/00Z GFS and ECMWF have 850 mb temperatures ranging from 8-10C with south to southwest low-level flow.
1016 PM EST Sat Nov 19 2016 A cold front has moved through the forecast area.
The models are showing 700 mb temperatures slightly cooler than today, but believe it will be at least a few degrees warmer with pronounced low-level downslope and less mid/high level cloud cover.
A cooler airmass is in place across the region and temperatures today have been running around 20 to 25 degrees cooler than 24 hours ago. High pressure, both aloft and at the surface, will remain in place through the weekend. Good radiational cooling conditions will be present tonight and today's cold air advection will also help temperatures drop close to freezing overnight. The one caveat which may help temperatures remain a little warmer than otherwise might be the case will be the wind. Most locations should at least touch freezing for a few hours, with the best chance of below freezing temperatures in the northern parts of the CWA. Temperatures on Sunday will be about like today or a little warmer as the high moves over our region.
An upper level ridge will dominate the overnight and Sunday time periods, expect high cloudiness and moderate November temperatures for the short term. Proton Previous Discussion Gusty southeast winds continue as northeast Montana remains in between high pressure to the east, and low pressure to the west. Otherwise dirty flattened ridging will make for seasonally warm temperatures with mid and high clouds pushing through tonight into Sunday.
And although a few sprinkles are possible over the Atlantic Waters associated with the passage of a weak cold front tonight, conditons in general will remain dry. Expect the lowest temps tonight over interior areas around Glades and Hendry counties with morning lows near 50.
557 PM CST Sat Nov 19 2016 High pressure will continue to move east over the Northland tonight. This should help the lower clouds and flurries to gradually dissipate, but more mid and upper level clouds were already moving through the Northern Plains toward the region in an area of mid level warm air advection.
No doubt south winds will keep temperatures warmer tonight compared to last night. Overnight lows will be a little warmer than compared to last night with the southerly winds continuing through the overnight period. Highs should be the warmest across the southwest zones where 850-hPa temperatures will be warmer. A large trof west of the forecast district will allow for continued low level warm air advection pattern.
Temperatures are in the lower to mid 70s. A cold front will move southward down the Florida peninsula overnight.
601 PM CST Sat Nov 19 2016 At H5 Hudson Bay low with sharp trough into the southeast CONUS. Ridge along the east coast and over the Rockies from Mexico to Calgary. Closed low off the Pacific Northwest. A strong upper level ridge over the western US will slowly slide eastward through the end of the weekend. Conditions will remain dry across the central Plains as a resulting high pressure system dominates the region. Low temperatures tonight remain cool, but warmer than the previous night. With cool temperatures flowing over the warmer river valleys, there's a possibility of some shallow fog early Sunday morning. Locations further northeast will see slightly cooler temperatures in the low to mid 40s. After a warmer day on Sunday warm air advection continues through the night on Sunday.
526 PM CST Sat Nov 19 2016 The low pressure and cold front that brought cooler air into the area has moved into the Great Lakes region with a large amplitude ridge building into the Great Plains. High pressure dominates the region extending from southern TX up into MN with slightly below normal temperatures over the region. A hard freeze is expected over the entire area tonight with temperatures in northern MO in the lower 20s and south of the Missouri River in the mid to upper 20s.
700 PM EST Sat Nov 19 2016 A strong, dry cold front will shift off the coast tonight.
Areas of SW Virginia, NE Tennessee and the higher elevations of the Appalachians in both TN and NC continue to report sustained winds on the order of 20 KTS with gusts exceeding 30 KTS at some higher elevation sites in NC and VA. Will let the wind advisory expire overnight as winds in the higher elevations begin to decrease below criteria. Chattanooga Airport, TN 30 52 29 57 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 27 46 24 52 / 0 0 0 0 Oak Ridge, TN 28 45 24 53 / 0 0 0 0 Tri Cities Airport, TN 25 42 20 48 / 0 0 10 0 NC.
603 PM CST Sat Nov 19 2016 High pressure in control through Sunday.
Still expecting temperatures to drop to or below freezing tonight and may make some additional adjustments to lower forecast overnight lows as we monitor the temperature. Cold advection will also decrease as well, so may see temps similar to today's readings, or perhaps a couple degrees cooler.
514 PM EST Sat Nov 19 2016 A cold front has moved through the forecast area.
/Tonight through Sunday/ Quiet conditions expected tonight into Sunday with high pressure overhead tonight and beginning to move off to the east Sunday.
A moderate and increasingly moist SW flow aloft Sunday evening will then precede the next Pacific trough that will be approaching Sunday night and initiating the onset of precipitation and colder air for our CWA.
905 PM EST Sat Nov 19 2016 Cold front is now pushing south of our forecast area. Northerly winds will remain around 10 mph for most areas throughout the night as high pressure builds into the region. Temps early Sunday morning, however, will still be a good 10 degrees below normal and the wind will make it feel even colder with wind chills in the low to mid 30s expected for most inland locations. Northerly winds 20 to 25 knots will continue overnight as colder air filters in behind a departing cold front. High pressure will continue to build into the region on Sunday and winds will quickly subside, decreasing to 15 knots or below by the afternoon hours.
Satellite showing upper low remains off the coast this evening. A cold front currently located along the coast will move through the region Sun with rain likely. As the upper low moves away from the Pacific northwest Mon a drier westerly flow will develop with clearing skies. The next cold front moves through Tue night with another round of rain and mountain snow.
Freezing level near 14,100 feet. /issued 309 PM CST Sat Nov 19 2016/ Cold front pushed offshore around sunrise and post frontal air mass is steadily moving in. Current temps are hovering in the lower 60s and expect highs Sunday to be the same. Thinking that this will limit cooling enough to keep lows from reaching freezing.
609 PM EST Sat Nov 19 2016 A cold front has moved through the forecast area.
Good radiational cooling conditions will be present tonight and today's cold air advection will also help temperatures drop close to freezing overnight. The one caveat which may help temperatures remain a little warmer than otherwise might be the case will be the wind. The best chance of below freezing temperatures does look to remain in the northern parts of the CWA. With areas that experience calm winds, frost will easily form, thus added that wording with the freezing conditions. Temperatures on Sunday will be about like today or a little warmer as the high moves over our region.
614 PM CST Sat Nov 19 2016 A cool continental polar air mass spread across MN/WI today in the wake of the low pressure system and heavy snow that fell across a large swath of MN yesterday. The low stratus has been tough to clear in eastern MN in part due to the cool temperatures aloft and solar heating, which has lead to additional strato-cu development this afternoon. We are forecasting low temperatures that are on the low end of the model guidance spectrum because of this.
1000 PM CST Sat Nov 19 2016 Clear and cold conditions continue tonight as a high pressure system near the Ozarks moves east towards the MS/TN Valleys. The relatively calm winds, cold airmass, and a clear sky will continue to contribute to efficient radiational cooling for overnight lows to drop below freezing tonight. Cold advection will also decrease as well, so may see temps similar to today's readings, or perhaps a couple degrees cooler.
512 PM CST Sat Nov 19 2016 VFR conds to persist for the next 24 hours as high pressure settles over the southern plains. While Houston and Trinity counties remain the most "at risk" at seeing freezing temps by sunrise Sunday, the rest of the northern counties should remain above freezing.
An upper trough to the west was introducing some mid to high level clouds along with warm air advection at the mid levels. This should keep temperatures warmer than last night.
307 PM MST Sat Nov 19 2016 Upper ridge over the Rockies will push east into the plains overnight and into the day Sunday, with gradually increasing SW flow aloft across srn Colorado. With warming aloft continuing and wly downslope flow increasing, min temps all areas will be warmer than last night, with downslope warmed locations along and west of I-25 staying above freezing through the night. On Sunday, lee side low pressure near Trinidad deepens through the day as SW flow aloft increases.
High pressure ridge will remains to the west, but will slowly slide east during the overnight hours. Winds will also gradually decrease by sunset and into this evening as low pressure pulls further away from IL as it moves further east into Quebec and high pressure ridge over central plains drifts east toward the MS river valley by Sunday morning, and settles over IL by Sunday afternoon. A widespread hard freeze expected tonight with lows mostly in the lower 20s, ranging from upper teens by Galesburg to 25F by Lawrenceville. Wind chills to lower into the low to mid teens overnight. Chilly highs again on Sunday mostly in the lower 40s, with areas from I-74 northeast in the upper 30s to near 40F so similar to today's readings.
High pressure, both aloft and at the surface, will remain in place through the weekend. Good radiational cooling conditions will be present tonight and today's cold air advection will also help temperatures drop close to freezing overnight. The one caveat which may help temperatures remain a little warmer than otherwise might be the case will be the wind. Most locations should at least touch freezing for a few hours, with the best chance of below freezing temperatures in the northern parts of the CWA. With areas that experience calm winds, frost will easily form, thus added that wording with the freezing conditions. Temperatures on Sunday will be about like today or a little warmer as the high moves over our region.
Strong low pressure was located over northern Ontario this afternoon. Once the low clouds move out then expect some high clouds to move through our skies late tonight and Sunday. Otherwise, high pressure building in over the next 24 hours will bring quiet weather and continued cold conditions along with light winds. This is similar to lows which occurred this morning just east of the ridge axis outside of snow cover.
340 PM PST Sat Nov 19 2016 A weather system is expected to impact the area over the next couple of days with cooler temperatures and precipitation chances. A cold frontal system is approaching central California from the northeast Pacific and has begun impacting the area today.
Temperatures will continue to be slightly normal than average with highs in the 40s and overnight lows near freezing. Tonight: Low pressure churning off the Washington coast will make slow progress northward tonight. The higher terrain in the north Cascades, including Stevens Pass, will likely receive 2 to 4 inches by morning.
Today the deep mid-level trough continued to progress further east of the area and across the Great Lakes region with a mid-level ridge over the Rockies beginning to shift into the central U. With the CWA remaining under the influence of high pressure this weekend, conditions will remain dry with continued clear skies in place. The tighter pressure gradient present on Sunday will result in breezy southerly winds which will support some warm-air advection with temperatures warming to near the seasonal-normals with highs in the low/mid 50s.
840 PM EST Sat Nov 19 2016 Intensifying low pressure will approach from the west overnight.
The actual overnight lows will of course be cooler in rural and out lying lower elevations and valleys. Any higher spots on ridges could even manage to stay just above freezing if the wind stirs at all. Southerly flow in low lvls to begin increasing late Sunday, therefore overnight lows to be several degrees warmer, although eastern cwa may flirt once again with near frzg temps.
A few sites in the northeastern forecast area have already dropped into the upper 30s (Crockett reporting a 930 PM CST temperature of 37) and with the aforementioned conditions in place, expect temperatures to fall near to just below freezing across extreme northern and northeastern parts of the forecast area. A few localized areas outside of the warning (but north of the Houston metro) may also reach freezing, but these locations are expected to remain too isolated to warrant expanding the warning with lows tonight ranging from the 30s inland to 40s to low 50s along the coast. /ISSUED 512 PM CST Sat Nov 19 2016/ VFR conds to persist for the next 24 hours as high pressure settles over the southern plains.
648 PM EST Sat Nov 19 2016 A cold front has moved through the forecast area.
/issued 248 PM CST Sat Nov 19 2016/ Many areas saw their first freeze this morning thanks to a cold front, clear skies, and a very light wind. Zonal upper flow this week will bring a couple of troughs across the central U.
848 PM CST Sat Nov 19 2016 High pressure will continue to move east over the Northland tonight. This should help the lower clouds and flurries to gradually dissipate, but more mid and upper level clouds were already moving through the Northern Plains toward the region in an area of mid level warm air advection.
The strong low will continue northeast through Quebec tonight and the high pressure ridge across the plains will also edge closer to the area tonight. One more cold night is in store for Sunday night as high pressure remains in place. KMD 152 PM CST The coming holiday week will start off with dry and seasonal conditions (mid to upper 40s) as an upper level ridge moves overhead. Light winds will become easterly as low pressure organizes in the southern Rockies in response to a southern stream trough axis.
We will start warm advecting in the low levels Tuesday, with an uptick in temperatures back to normal with a touch of humidity. The latest models continue to advertise a Rockies ridge, and eastern CONUS trof.
Upper level ridging across the Southeast will dampen through the period as a trough amplifies as it moves from the north-central tier of the country through the Great Lakes region. Expect the highest PoPs south of interstate 10. In addition to PoP coverage, high temperatures will likely still run above average on Monday, before the ridge really starts to break down by Tuesday.
201 AM MDT MON JUN 27 2016 West-northwest flow is over the northern plains as upper ridge builds over the western CONUS. Upper ridge will shift eastward over the Rockies today. Highs today will be in the lower 80s, with 70s in the Black Hills. Upper ridge axis will remain to our west into the weekend with generally W/NW flow through the nrn plains.
A strong upper level ridge will maintain hot weather this week with high temperatures today approaching triple digits for western Nevada.
Conditions were quite muggy with dewpoints in the low 70s. The weak surface convergence associated with the front along with weak height falls on the periphery of the upper level trough will provide forcing for ascent for storm development.
121 AM EDT MON JUN 27 2016 High pressure ridging into the forecast area from the northeast will weaken Monday. Moisture will increase Monday night ahead of a cold front. High pressure and a generally dry atmosphere will ensure fair weather overnight. Upper ridging will weaken over the area Monday with upper level flow becoming more westerly Monday night. Warm air advection will promote high temperatures in the lower to middle 90s. The GFS and ECMWF are in good agreement showing an upper ridge over the western US and a trough axis crossing the Great Lakes region and spreading out over the eastern US by mid week.
1245 AM CDT MON JUN 27 2016 A cold front will back southwest into extreme northern Nebraska this evening then further west to the high plains this week to be the focus for thunderstorm development. The cold front moving through South Dakota's will move into far northern Nebraska this evening.
321 AM CDT MON JUN 27 2016 High pressure building in from the north is pushing rain to the south of the area this morning, while a weak cold front/wind shift drops south of I-70.