Aikyam-Lab/Synoptic-Bench huggingface dataset:
1258 PM CDT Mon Sep 4 2017 Strong cold front has pushed through the majority of the CWA and have some heavy cirrus/smoke moving through on satellite behind the front. As the associated upper trough digs into the MN/WI region today into this evening, a few instability showers may pop up and move through the far northeast by early evening. /Today through Tonight/ Highly advertised cold front had entered far northwest Iowa by 3 AM and will continue to push across the state. Tonight, an upper trough will push south and begin to deepen as it heads into the Great Lakes region while high pressure at the surface wedges in. A band of vorticity tied to the trough pushing in will produce a second band of mid/high clouds that will push across the state mainly this afternoon/evening.
Aside from this, should be a quiet night with mostly clear skies and lows generally in the lower 70s.
320 PM PDT Mon Sep 4 2017 High pressure will continue to provide unseasonably hot temperatures through Tuesday with areas of wildfire smoke and haze.
149 PM EDT Mon Sep 4 2017 After a warm Labor Day, A cold front will bring thunderstorms and rain overnight, and will usher in below average temperature for the remainder of the week. Dry and warm conditions today as an upper troughing digs north of the Great Lakes and warm air advection ramps ups ahead of a front approaching from the west. As the aforementioned upper trough amplifies over the Midwest/Great Lakes on Tuesday, eastward frontal penetration power will be compromised by southwest/semi-parallel flow aloft.
However, scattered convection is expected to develop along an approaching cold front late in the period.
Aloft, a highly amplified ridge to the west of us will continue to usher in much cooler temperatures. Temperatures will be even cooler than Monday with most locations struggling to warm above the upper 60s.
Gusty winds, especially on ridge tops can be expected.
There is the potential for patchy fog again near TRI tonight, but with high pressure moving to the east and increasing cloud cover by 12z Tuesday, believe that any fog will be limited.
1119 AM MDT Mon Sep 4 2017 Current surface analysis shows cold front now south and east of the forecast area, with much cooler air filtering into the region. Upper level analysis shows somewhat flattened ridge remaining over the Great Basin region and the Pacific NW, with stronger northwest flow sinking south into the Northern Plains. Another mainly dry week can be expected across the area as strong ridge builds back north into western Canada and brings dry air south out of central Canada. Much cooler conditions can be expected across the area into midweek, with temps slightly below average.
242 PM MDT Mon Sep 4 2017 Leading push of cold front has moved through Denver metro area, but little cooling with this one. While the plains largely scour out of the near surface smoke, we do anticipate the smoke plume aloft to keep hazy conditions in place on the plains, and some smoke in the high country. Highs on Tuesday will be considerably cooler in post frontal airmass. Tuesday night a large upper level ridge of high pressure will stretch from British Colombia south into northern Mexico. with a deep upper level trough of low pressure covering much of the central and eastern United States.
12 UTC surface analysis shows our region on the southwestern edge of an area of high pressure off the coast of South Carolina.
454 PM EDT Mon Sep 4 2017 A cold front will move into the northwest part of the state tonight, then progress very slowly to the east during the day Tuesday.
113 PM MDT Mon Sep 4 2017 Water vapor shows upper ridge amplifying along the west coast with trof digging into the Upper Midwest.
335 PM EDT Mon Sep 4 2017 Gusty southerly winds will continue to bring warm and humid air into the region today ahead of an approaching cold front. This strong cold front will move through the area tonight night, bringing showers and thunderstorms. Much cooler temperatures and will return for the second half of the workweek. Latest surface analysis shows strong cold front from lower MI across northern IL, MO into the central plains. Strong surface cold front pushes into northwest Ohio by 00z and across ILN/s FA tonight. Flow amplifies as mid level trof digs south into the Great Lakes Tuesday/Tuesday night. Cool temperatures will only reach highs from the lower 70s northwest to the mid 70s southeast.
1236 PM CDT Mon Sep 4 2017 Upper ridge is currently centered over the central Great Basin with northwest flow over the central/northern Plains. At the surface, cold front stretches from central MN into nw Nebraska with a trough situated east of this feature. Strong cold front will continue to be the main story today and tonight as it continues to push south. The bigger story with this front will be much cooler fall like temps for Tue into Wed. A thin layer of cirrus is expected at all sites with some cumulus development possible ahead of a southeastward moving cold front.
The focus of the activity will be concentrated in Mohave and northern Lincoln counties as well as along the higher terrain. A ridge of high pressure will move over the area today and tomorrow increasing temperatures before an upper-level low digs into the western CONUS later this week. Moisture will remain trapped under the ridge keeping slight chances across most of the region each afternoon, primarily over the higher terrain.
Temperatures were near 90 degrees with dew points near 80 while winds were generally from the northeast to east High pressure over the Atlantic will extend westwards and by tomorrow will reach northern-central Florida. A trough over the eastern section of the U.
A cold front will approach the area Tuesday afternoon, just beyond the TAF period which will result in increasing showers and thunderstorms Tuesday evening. /issued 434 AM CDT Mon Sep 4 2017/ The latest upper air analysis and water vapor imagery shows a trough lifting northeast acrs New England, while further west, a ridge of high pres was dominant over the southern Rockies and great basin.
Thick layer of smoke have kept temperatures a shade cooler than anticipated across the region. Temperatures will be cooler across the region on Tuesday with 850 hpa temps of 5-7 C.
248 PM CDT Mon Sep 4 2017 Cold front is currently moving into the CWA this afternoon and will continue to move southeast through the CWA late this afternoon through this evening. Convection should be south of the CWA by midnight, but could be some lingering precip in the southeast as mid level trough will still be coming through the CWA. Behind the front, Tuesday, dry weather is expected across the area with high pressure off to the west and the mid level trough deepening. Cloud cover and precip will keep up through most of night, but expecting northern areas of the CWA to drop into the lower 50s by morning. Temps tomorrow will be much cooler than today and yesterday and should be below normal.
Area lows will fall into the upper 40s northwest to the lower to middle 50s elsewhere.
/ISSUED 455 AM CDT Mon Sep 4 2017/ High pressure is expected to hold over the region today. Rain chances return with the passage of a cold front Tue night on into the first half of Weds. Still not seeing a lot of return low level moisture/dynamics with FROPA at this time, so the scattered storms will be generally along the cold front itself. Much cooler and drier weather to prevail through the end of the week.
Based on latest observed temperature trends, did nudge up high temperatures, but we should still comfortably stay in the low to mid 70s over all of western and central North Dakota through the afternoon. Forecast highlights in the short term period will be cooler temperatures and gusty winds. Currently, strong northwest flow aloft between a persistent ridge of high pressure across the western U. and deep low pressure over Hudson Bay. Lows mainly in the 40s with dry air advection this afternoon and the lower Tds lingering tonight.
If heat and humidity is not your thing, there is a cold front just south of the Kansas City metro area pushing towards the area. Temperatures on the other side of the front were in the low 80s across northern Missouri and the low to mid 70s in Iowa. Surface based CAPES were percolating in the 3000-4000 j/kg range along and ahead of cold front in central MO. Highs will be noticeably cooler starting Tuesday with highs in the 70s.
210 PM EDT Mon Sep 4 2017 After a warm Labor Day, A cold front will bring thunderstorms and rain overnight, and will usher in below average temperature for the remainder of the week. Dry and warm conditions today as an upper troughing digs north of the Great Lakes and warm air advection ramps ups ahead of a front approaching from the west. As the aforementioned upper trough amplifies over the Midwest/Great Lakes on Tuesday, eastward frontal penetration power will be compromised by southwest/semi-parallel flow aloft.
409 PM EDT Mon Sep 4 2017 High pressure will slide out to sea tonight.
Temperatures ranged from the lower to middle 60s across the far north to the lower to middle 70s south. 500mb trough is expected to swing across the area tonight through Tuesday.
214 PM MDT Mon Sep 4 2017 Low temperatures will drop into the lower 40s tonight under clear skies and light winds, with frost possible in elevated valleys. High pressure will provide hotter temperatures through the end of the week.
345 PM EDT Mon Sep 4 2017 A cold front will slowly push into the state from Quebec later tonight into Tuesday.
403 PM EDT Mon Sep 4 2017 A cold front and associated showers and some gusty thunderstorms will move across the northwest third of the state tonight, then progress east across the state during the day Tuesday, focusing the severe weather threat across the southeast half of the state on Tuesday.
315 PM EDT Mon Sep 4 2017 High pressure will continue to drift east and offshore tonight.
/Tonight through Tuesday/ Cold front that pushed through the state earlier today has now pushed into northern Missouri. Energy continues to dig into MN/WI currently, with the strengthening upper trough to continue to sink further south/east tonight. Any precip should dissipate into mid evening with clearing skies expected as this boundary/upper trough will clear out the smoke from the state overnight. Some gusty winds are also possible into the afternoon hours with a tightened pressure gradient and stronger northerly flow in the lower levels as well.
1213 PM CDT Mon Sep 4 2017 A cold frontal passage will affect most sites during the second half of the valid TAF period, with an associated surface wind shift to northerly at <=7kts. Mid/high clouds will increase from the north tonight as a cold front approaches the region. A big ridge of high pressure will build over the western United States, and that is where the heat will go. East of the Rockies, a large trough will be carved out, with a northwest wind flow aloft driving a cold front through Arkansas. Rain will taper off from the north Tuesday night, and it will be a lot cooler.
308 PM CDT Mon Sep 4 2017 A fairly strong cold front will move toward the area this evening and then cross the region overnight. Scattered thunderstorms will accompany the front with much cooler air to follow as we head through the short term period. There is some offset of upper level wind dynamics and the surface cold front (better dynamics lag frontal convergence and instability) and we will be losing a good chunk of instability between 9 PM and midnight.
1248 PM CDT Mon Sep 4 2017 The upper pattern is characterized by northwesterly flow aloft over western and north central NE, with a ridge of high pressure across the western states and a broad trough over the northeastern U.
Ridging will continue to shift to the east as a deep trough moves southeast into the Southern Appalachians on Tuesday. This will bring a surface cold front into the area Tuesday afternoon. 0 inches with the highest amounts across southern portions of the forecast area near Chattanooga and lower values across northeast TN and southwest VA. H5 trough axis over the Great Lakes Tuesday night will help usher in cooler air behind Tuesday's frontal passage.
152 PM EDT Mon Sep 4 2017 High pressure will slide offshore this afternoon through tonight.
Moisture will begin to increase ahead of an approaching cold front Tuesday.
401 AM EST Sun Feb 4 2018 Rain and snow will return to the area today with crossing low pressure. Warm advection ahead of the low should result in a mix or change over to rain from PIT S. The exception would be the Laurel Highlands and Garrett county MD where the highest terrain should stay mainly snow. Areas N of I 80 and the higher elevations should see 2 to 4 inches of snow through Sunday evening, with locations above 2500ft an inch or so more. Precip will become all snow this evening as the low's associated cold front crosses. Scattered snow showers are expected after FROPA with upper troughing and cold NW flow. Snow showers will taper off late tonight as high pressure builds in.
250 AM CST Sun Feb 4 2018 As of 08z Sunday, the cold front has just begun to move into the forecast area. A secondary trof will slide southeast through area this afternoon. Some decent mid-level forcing with it, but with so much dry air in the low levels, only expect some flurries with its passage through region.
Showers will return to the CWA tonight ahead of this next system with the highest chances during the second half of the night across northwest portions of the CWA (southeast Alabama). The cold front and accompanying rain will continue to sweep from west to east across the forecast area Sunday. Highs will be in the upper 60s to lower 70s Sunday and range from the lower 60s north to around 70 far southeast on Monday.
1148 PM CST Sat Feb 3 2018 A strong cold front is working it's way south through the Dakota's today with 3 pm temperatures only averaging around -5F across North Dakota while here in southern Nebraska we've been seeing afternoon temperatures in the mid 50s. The cold air will continue to plunge south into Nebraska tonight behind a strong cold front, but the air will moderate some so we don't expect below zero temperatures across our area. The cold and the wind will not be the only slap in the face tomorrow morning after our nice weather today, we also expect at least some light snow in association with the cold front.
High pressure over the region will continue to bring dry weather and very warm temperatures through Monday.
This area of low pressure will begin to drift east later today and will track just south of the state. After the rainfall has moved out, a cold front will make its way through the state from north to south. With high pressure building in in its wake, cold air will begin to overspread the state once again.
357 AM CST Sun Feb 4 2018 This morning, a cold front is lingering back along the Mississippi River Valley to the northwest. Skies clearing closer to sunset and through the overnight in combination with light winds under the ridge axis will result in efficient radiational cooling.
228 AM CST Sun Feb 4 2018 A cold front is currently pushing through the CWA and is expected to quickly move into southern Missouri by sunrise.
335 AM CST Sun Feb 4 2018 Longwave trough over eastern North America will broaden mid-week and amplify a bit as a wave skirts the back side of western ridge and digs into the south-central U.
308 AM CST Sun Feb 4 2018 The highlight in the short term period - frigid temperatures with an ongoing wind chill advisory advertising dangerous wind chills to 40 below zero through the morning. Despite a sunny sky today with high pressure dominating, brisk northwest winds of 15 to 25 mph combined with high temperatures in the single digits above zero, will yield wind chills between 10 below and 25 below zero this afternoon.
Thus precip will be rain except at the highest elevations. Mild temperatures with a few mountain showers will persist through much of the week as high pressure remains off the west coast.
312 AM CST Sun Feb 4 2018 The surface cold front has cleared the forecast area as the associated mid-level trough continues eastward over the mid MS valley. The high resolution ensemble forecast agrees with this placement and amounts, and the HRRR ensembles have very low probabilities of one inch of snow in these areas. Return flow will quickly become established by towards sunrise so the low temperatures may actually occur around midnight especially in central KS. Some light rain and snow is possible Monday afternoon along the Nebraska border as a wave zips across northern Kansas and southern Nebraska along with some frontogenetic forcing in the wake of the cold front. The cold front is expected to proceed southward Monday evening and into Oklahoma by Midnight.
1103 PM EST Sat Feb 3 2018 A storm system will move north of the region Sunday dragging a cold front through the area later in the day and overnight.
High pressure will move from the Northern High Plains to the Central Plains today, and resulting in a switch from our light northwest flow to brisk westerly flow by this afternoon. Air temperatures will claw back to the lower single digits above zero this afternoon, yet wind chills will be about 5 to 15 below zero. Cirrus will begin spreading in from the north this afternoon in advance of an approaching cold front from the north. Another Arctic cold front will pass through the Northland Monday morning and afternoon from the northwest. Monday will be another cold day with highs ranging from the the single digits above zero in northern Minnesota to the lower teens in northwest Wisconsin and nearby areas of Minnesota.
Cold front arrives after daybreak, but winds are fairly light to start off which could lead to a slow improvement to vfr. Overnight lows will range from the low to mid 40s across the Hill Country to mid 50s along the coastal Plains.
An upper level ridge will continue over the NE Pacific with northwest flow aloft across the Pacific Northwest. A few systems will ride over the ridge and give southwest Washington and a decent part of northwest Oregon precipitation at times through Monday.
Strong cold front pushes into NE OK before sunrise and progresses quickly southward through the day. Cold front should begin to move into northeast OK before 12z with a shift to north winds. Thereafter forecast sided toward the higher resolution guidance and will bring low MVFR to periodic IFR ceilings southeast of Interstate 44 later tonight. Cold front pushes quickly southward after sunrise bringing gusty winds with any ceilings likely raising into VFR levels. A strong cold front currently across the northern Plains will drop into northeast OK toward daybreak and exit the region during the afternoon.
At this time, thermal profiles from the models support all snow for locations generally north of highway 54, and a winter mix of snow/sleet/freezing rain for southern Kansas.
However, think there will be 1-4 hours of improved ceilings and visibility south of the warm front from Houston to the coast in the short term. Sunday's partial clearing up north will allow many communities to flirt with the lower 70s while.
Nice slug of low level thermodynamics ahead of the wave (upglide on the 280:295K sfcs, 850 mb warming) with some north- south sloping frontogenetic response north of a sfc warm front. Outside of this snow threat, some indications that an upper level trough will slide across the region late Tue/early Wed.
As this trough progresses eastward today, it will spur another frontal boundary that will push across the Gulf of Mexico towards the peninsula of Florida.
108 AM EST Sun Feb 4 2018 High pressure will be shifting farther off the East Coast tonight. A low pressure system and associated cold front will cross the region Sunday bringing widespread rain.
Water Vapor Satellite shows ridging along the West Coast. Also expect gusty winds to continue on ridgetops overnight. The large ridge in the ern Pac extending nwd into the ern Gulf of Alaska remains in place this afternoon with a northwest flow downstream across the Great Basin. A slight retrogression of the ridge Sun looks to allow a somewhat better defined short wave to dig swd thru UT on Mon with a trailing vort max on Tue. This sends a cold front thru the CWA and brings a colder airmass in its wake.
148 AM MST Sun Feb 4 2018 A 130-kt jet is pushing into the northern plains in northwest flow, between a broad trough to the east and a ridge to the west. Satellite shows cloudy skies over SD and northeastern WY, but a line of clearing is moving down from ND with high pressure. Snow will end from north to south early this morning, as high pressure pushes into SD. Temperatures there will be warmer, in the 20s, while western SD will be in the teens. Most of the precipitation will be snow, but some WAA across northeastern WY/southwestern SD may result in a mix of rain/snow or a little freezing rain. SREF precip type and NAM/GFS soundings support this, so added a mention of some freezing rain for a small area from 06-12Z Monday.
In places that see extensive fog tonight that takes a while to burn off tomorrow morning, temperatures will be cooler. The current forecast indicates patchy fog west of the Rogue Valley with temperatures a few degrees cooler than yesterday.
118 AM EST Sun Feb 4 2018 High pressure will be shifting farther off the East Coast tonight. A low pressure system and associated cold front will cross the region Sunday bringing widespread rain.
A cold front will bring gusty north winds early Sunday which will last through the daytime. A cold front will bring gusty north winds early Sunday which will last through the daytime.
1100 PM MST Sat Feb 3 2018 Upper trough crossing the state this afternoon, though impacts have been limited to just a few snow showers over the Central Mountains and gusty w-nw winds area-wide. After a lull in snowfall over the Central Mountains today, weak trailing upper energy should restart orographic snows for a brief period overnight, with perhaps a fresh inch or two over the highest west facing slopes of the Mosquito/Sawatch ranges by Sun morning.
An arctic front was bringing very cold temperatures from the low single digits north to the lower teens south. A short wave trough extending across Minnesota through southern South Dakota and northeast Wyoming, will drop southeast today. Temperatures in the teens this evening will actually rise into the low to mid 20s west, while remaining in the mid teens east. An Arctic cold front will pass through the forecast area on Monday.
High pressure, slightly cooler and drier benign weather Monday.
325 AM CST Sun Feb 4 2018 Much cooler air is surging into the area behind a cold front that has worked into the Central Plains by 08Z. With drier and cooler air working into the area, expect light snow/flurries to come to an end yielding to mostly clear skies.
214 AM EST Sun Feb 4 2018 A storm system will move north of the region Sunday dragging a cold front through the area later in the day and overnight.
248 AM EST Sun Feb 4 2018 Widespread precipitation ongoing across most of the lower Ohio Valley at this hour, with temperatures in the 32-37 degree range where precipitation is being reported. Given near or just above freezing air and ground temperatures, can't imagine most areas picking up more than a slushy dusting of snow. Should see everything turn over to rain near or just after sunrise as warmer air builds northward. A strong cold front will move through this afternoon, and there could be some light rain/snow showers and/or sprinkles/flurries behind the front, mainly in southeastern Indiana and north-central Kentucky. High pressure quickly builds in Monday, keeping the region cool and dry. Broad trough will still be in place over most of the CONUS starting Monday evening.
119 AM EST Sun Feb 4 2018 High pressure will be shifting farther off the East Coast tonight. A low pressure system and associated cold front will cross the region Sunday bringing widespread rain.
1157 PM MST Sat Feb 3 2018 A southward-moving cold front will stall near Interstate 90 this evening before retreating northward as a warm front on Sunday, when the front is expected to make it as far north as the Central Montana mountains.