Aikyam-Lab/Synoptic-Bench huggingface dataset:
102 PM CDT Wed Aug 17 2022 (Today and tonight) A weak cold front 30 miles north of Haskell and Throckmorton counties at 3 AM CDT will continue to move slowly south today. While upper ridging will suppress most shower and thunderstorm development today, the ridge will be weakening from north to south this later this afternoon and tonight.
248 PM CDT Wed Aug 17 2022 A large ridge of high pressure will continue to dominate and bring quiet weather and seasonable temperatures to central and southeast IL through Thursday.
1232 PM CDT Wed Aug 17 2022 A large ridge of high pressure will bring quiet weather and seasonable temperatures to central and southeast IL through Thursday.
1221 PM CDT Wed Aug 17 2022 (Today and tonight) Today will feature a welcomed relief from triple digit temperatures as clouds and a few showers linger behind the cold front that is continuing to push southward into Texas.
Temperatues will be dramatically cooler this afternoon with most areas remaining in the upper 70s to lower 80s.
High pressure is found over the region, with light east winds and mostly clear skies. Thursday will be another pleasant day with highs in the lower 80s.
Still under the influence of high pressure, conditions are nice and quiet across most of the area. The High centers itself over the area overnight and early tomorrow morning resulting in mostly clear skies and calm winds tonight. Guidance is then in pretty good agreement in closing off a mid-upper level low with this wave as it tracks slowly toward our area, just in time for the weekend.
Thursday will be a bit warmer, but overall still very pleasant with highs in the 80s.
High pressure at the surface will work to limit precip progression into our region, but diurnally driven instability upstream in MN progressing into the far western portions of Lake Superior, as well as instability across parts of the interior west may support some scattered showers and maybe a rumble of thunder by afternoon. Deterministic models remain consistent throughout the forecast period with an overall synoptic pattern of broad downstream troughing over the northeast U. and ridging over the western and central U.
Low temperatures tonight will be in the lower to mid 60s, with highs on Thursday in the upper 70s to upper 80s.
Large upper level trough remains firmly in place across the eastern CONUS keeping local conditions largely unchanged from the previous day or two.
The surface cold front that has been a few hours behind the main upper-level wave, moved through Billings around noon, generally shifting winds to the north. Behind the front temperatures will be a little cooler tomorrow, with highs generally in the 80s.
Current forecast looks right on track with today the hottest day and Thursday only slightly cooler.
Cooler than normal temperatures continue. Longwave troughing continues to dominate the weather across the Eastern CONUS.
High pressure will bring dry weather and light winds to the area through the TAF period with VFR conditions expected to prevail. JB Chattanooga Airport, TN 67 86 69 82 69 / 20 30 30 60 30 Knoxville McGhee Tyson Airport, TN 64 85 66 82 67 / 10 30 20 70 40 Oak Ridge, TN 64 84 66 82 66 / 10 20 20 70 40 Tri Cities Airport, TN 60 82 62 80 64 / 10 30 10 70 40.
1107 AM CDT Wed Aug 17 2022 A large ridge of high pressure will bring quiet weather and seasonable temperatures to central and southeast IL through Thursday.
Taking a look at other sounding characteristics, steep lapse rates and dry conditions are present in the low levels out ahead of the boundary.
Ridging looks to remain to our south for the rest of our work week. By the weekend the ridge will start to head north which will bring back a more east to northeast flow. Ridging will remain to our south through the end of the work week. As we go through the weekend ridging will start to push north which will result in our flow changing more ENE.
256 PM MDT Wed Aug 17 2022 A ridge of high pressure will build over the Great Basin region through tonight. A combination of lift from afternoon heating and good moisture will allow showers and storms to develop over the higher terrain and drift over valley locations across the south in weak northwest flow. Conditions will dry further on Thursday as the ridge axis shifts slightly west pushing the main monsoonal plume across Arizona, southwestern Utah, and Nevada.
This CAM signal of more limited coverage today seems reasonable, given the closer proximity of the low-level ridge axis today. This feature will dig southeastward through Thu, likely evolving into a compact closed low on Thu night. Nevertheless, deep moisture, tall/skinny CAPE profiles, and somewhat slow storm motion in the vicinity of the low may support locally heavy rainfall on Sun. Farther ahead, chance PoPs will be carried for Mon and Tue as the upper low/trough slowly meanders eastward.
In fact, temperatures have remained in the low to mid 70s throughout the entire day.
Convection will wane this evening and cloud coverage should lessen as upper troughing finally begins to lift out of the region.
Otherwise, hot weather will continue through Thursday, followed by slightly cooler conditions during the weekend. After Thursday, upper heights are forecast to fall over the West Coast as troughing takes place across the NERN PAC.
Meanwhile, temperatures remain above seasonal averages across the interior while cooler conditions persist near the coast. The disturbance that brought all of the excitement today will exit to the north with high pressure building over the region. As high pressure settles back over the region expect more of a August pattern with night/morning marine layer clear to the coast each afternoon. Temperatures will remain cool along the coast with onshore flow and interior locations will be much warmer with temperatures in the 90s to near 100. KSFO Bridge Approach.
/issued 242 PM CDT Wed Aug 17 2022/ The cold front has pushed through the FA with temps ranging from the low to upper 80s as of 1 PM. Temps will likely warm by a few more degrees but will otherwise be kept in check by the cold front. As expected, the upper ridge has kept precip out of the CWA thus far.
600 PM MDT Wed Aug 17 2022 A ridge of high pressure will build over the Great Basin region through tonight. A combination of lift from afternoon heating and good moisture will allow showers and storms to develop over the higher terrain and drift over valley locations across the south in weak northwest flow. Conditions will dry further on Thursday as the ridge axis shifts slightly west pushing the main monsoonal plume across Arizona, southwestern Utah, and Nevada.
933 PM EDT Wed Aug 17 2022 Upper level low pressure will remain in place over the northeastern states, with below normal temperatures continuing across the Ohio Valley.
741 PM CDT Wed Aug 17 2022 A large ridge of high pressure will continue to dominate and bring quiet weather and seasonable temperatures to central and southeast Illinois through Thursday.
624 PM CDT Wed Aug 17 2022 A mid/upper ridge remains situated over the Central Great Basin and Northern Intermountain region while an upper level trough was lifting over the Northeast.
Closed-upper level low across New England, with broad and amplified ridging across much of the western and central CONUS. At the surface, high pressure remains centered just east of James Bay with a ridge axis draped southwest through the western Great Lakes into the mid-MS Valley. Because of this, lows may not be quite a cool versus the past few nights with widespread 50s and the typically cooler locations in the mid to upper 40s.
Ridging at all levels builds into Lower Michigan tonight, assuring clear-mostly clear skies and very light/calm winds. The previous mentioned upper level ridge will not be a favorable backdrop for diurnal showers (still a very low chance), and will be carrying just scattered VFR clouds above 5000 feet. Large upper level trough remains firmly in place across the eastern CONUS keeping local conditions largely unchanged from the previous day or two.
645 PM CDT Wed Aug 17 2022 The cold front has moved south into central Louisiana.
Tonight expect some patchy fog to develop and much cooler feeling tonight as temperatures will be in the low to mid 60s. In fact, temperatures have remained in the low to mid 70s throughout the entire day.
627 PM CDT Wed Aug 17 2022 (Through tonight ) Temperatures running 25 to 30 degrees cooler than yesterday at this time across much of the area, behind cold front, as light precipitation continues with overcast conditions.
727 PM EDT Wed Aug 17 2022 Upper level low pressure will remain in place over the northeastern states, with below normal temperatures continuing across the Ohio Valley.
1024 PM EDT Wed Aug 17 2022 Currently - A midlatitude trough over the eastern United States has displaced the Atlantic ridge slightly southward of its usual location. With the ridge axis located over the Florida Straits, surface winds have been light out of the west to southwest. However, there is some good dew point depressions through the lower levels. This along with the proximity of the ridge, and no convective forcing at any other level, has resulted in very little convective activity through the evening hours. A ridge axis across the Florida Straits will maintain light southwest to west breezes on Keys waters through the overnight period.
609 PM CDT Wed Aug 17 2022 A large ridge of high pressure will continue to dominate and bring quiet weather and seasonable temperatures to central and southeast Illinois through Thursday.
143 AM EDT Thu Aug 18 2022 Upper level low pressure will remain in place over the northeastern states, with below normal temperatures continuing across the Ohio Valley. Weak northwesterly flow aloft persists as an H5 trough sits across the upper Midwest. Skies trend mostly clear overnight, and high pressure nudging in from the west will offer nearly calm winds. Height rises will be occurring over the Ohio Valley on Thursday morning, as the northeastern trough moves further away into the Canadian Maritime provinces. Combined with a very weak area of high pressure at the surface, this will leave very tranquil conditions in place on Thursday, with warming temperatures aloft (and a total lack of forcing) keeping conditions dry.
Then short range models continue to be consistent in showing that the trough currently over Rockies will move into the Central Plains by this evening, and then across Missouri and Illinois late tonight and early Sunday. At the surface, a warm front will move back north into the CWA tonight ahead of the attendant low. This low will move east along the front from eastern Kansas late tonight into the CWA early Sunday. Isolated severe storms will be possible on Sunday over southeast Missouri into far southwest Illinois as the cold front continues to move southeast into the late morning/early afternoon with modest MUCAPES and deep layer shear near 50 knots.
455 AM CDT Sat May 8 2021 Low pressure and the associated rain and thunderstorms continue to advance eastward off the Rockies and into central SD early this morning. As the ridge shifts south through today, expect thunderstorm activity to taper off. Temperatures will either hold steady or fall today as rain moves in, especially as the upper ridge moves south and caa takes hold. Long range will be dominated by cool and mostly dry conditions, as an upper high drifts nearby, before the remnant upper low eventually kicks eastwards with some potential for light showers.
A cold front has moved through the area leaving breezy to moderate winds for today along with temperatures 10 to 15 degrees below normal. An upper level low is centered over North Idaho/Western Montana currently. There is some model discrepancy here, but winds will likely increase back to advisory levels around 2 to 6 pm for the Eastern Magic Valley and, to a lesser degree, the Lower Snake plain. With winds backing off and mostly clear skies, expect freezing temperatures Sunday morning.
A weak cold front will move through the region today bringing slightly cooler temperatures along with some enhanced northwest winds.
803 AM EDT Sat May 8 2021 High pressure centered in the Deep South will provide a dry and coolish northeasterly flow today. High pressure resides north of the waters today with northeast winds of 15 knots or less that diminish and become north and northwest in the afternoon. The high pressure slides offshore Sun and tracks east.
Colder air settles into the area this morning, with rain transitioning to snow slowly over some of the higher elevations today. A winter weather advisory remains in effect mainly for the higher elevation of Cascade, Judith Basin, and Meagher Counties for late this afternoon through Sunday morning.
A few snowflakes are still possible mainly in the higher elevations this morning, but this potential will quickly end as the boundary layer starts to warm. Transitory high pressure will provide a brief dry break during the afternoon and into the evening. Dry conditions continue this evening before rain chances increase early in the AM as moisture advection ramps up ahead of low pressure approaching from the west. Canadian, EC, and GFS guidance (both ensemble and operational) have all trended slightly farther north with the low track to some degree over the past couple runs. 24 hour precipitation amounts are forecast to range between one and one and a half inches with the highest amounts centered along a SSW line running roughly from Coshocton-> Pittsburgh-> Indiana. Widespread precip will diminish to more scattered showers Sunday night the backside of the low.
Temperatures are expected to come close to freezing in many locations west of the Cascades tonight prompting the freeze warning. We'll keep the freeze warning going since we'll be so close to freezing over some locations, but most locations will probably remain above freezing for tonight.
Dry conditions continue this evening before rain chances increase early in the AM as moisture advection ramps up ahead of low pressure approaching from the west. Canadian, EC, and GFS guidance (both ensemble and operational) have all trended slightly farther north with the low track to some degree over the past couple runs. 24 hour precipitation amounts are forecast to range between one and one and a half inches with the highest amounts centered along a SSW line running roughly from Coshocton-> Pittsburgh-> Indiana. Widespread precip will diminish to more scattered showers Sunday night the backside of the low.
558 AM MDT Sat May 8 2021 A small window of opportunity early this morning for 60+ MPH gusts near Arlington/Elk Mountain as the 700 hpa CAG-CPR gradient climbs to near 60 meters after 09z in advance of a surface cold front now moving into western Carbon County. Precipitation chances are likely to be on the up- tick again by Sunday night as a vigorous upper-level trough begins to dig south into the Great Basin.
For today, a 500mb low and trough will move east of the Northern and Central Rockies and onto the Northern and Central High Plains. This will push a cold front to near Highway 83 by mid afternoon. Chances for showers and a few thunderstorms will increase today as a disturbance currently over Utah reaches western NE and northwest KS later this afternoon and height falls occur in response to the closed low over MT. The highest POPS will be east of VTN through BBW, where deeper moisture and lift exist. The cold front will quickly drop south of the area this evening. There will remain a slight chance for showers across northern NE as an upper trough lingers over the Dakotas. Sunday night, an upper level trough will deepen over the Great Basin.
0530 AM MDT Sat May 8 2021 Water vapor imagery shows an upper low across extreme west- central Montana early this morning. The associated cold front has pushed across the forecast area. Cold air advection will continue today as the trough and upper low continues to pull eastward. After 03Z, models are showing a mainly dry night across the entire area as some subsidence on the south side of the upper low pulls across the forecast area. This is expected to change during the day Sunday as the upper low pulls possibly across northeast Wyoming into the northern High Plains. A closed low situated over far western Montana has an associated trough extending southward across Idaho and clipping northwestern Wyoming.
Some wrap around moisture will impact our western and southern zones tonight and tomorrow as it follows the Low out of our area.
311 PM CDT Sat May 8 2021 A few light returns are evident on radar this afternoon along a warm frontal boundary draped across the northwestern fringes of the local area. but continue to expect the radar to get more active over the next few hours as the associated area of low pressure across southeastern Colorado tracks east and a cold front crosses the local area late this afternoon through evening. expect the chance for thunderstorms to diminish rapidly behind the cold front. as a trough aloft continues across the plains with off and on again small chances for light rain showers. expect high pressure to begin to nudge across the area from the west.
Meanwhile, high pressure that was over the southeast U.
It is possible that a skinny remnant band of light showers (mostly if not all snow) will linger from northwest through south- central ND into tomorrow morning as light surface convergence develops in between high pressure to our north and low pressure to our west, with moisture becoming trapped in place. This will result in mostly clear skies Sunday night with low temperatures likely dropping into the upper 20s, with even cooler temperatures possible in the usual cold spots. The upcoming work week will start off dry with gradually warming temperatures as deep layer high pressure lingers over the area.
This instability weakens and gradually becomes shunted to the south through this morning, but some forecast soundings still show weak elevated unstable layer above 700mb spread east, generally 200-300 J/kg MUCAPE near/south of I-90, with possibly as much 400-500 J/kg in our far southern areas near the Highway 20 corridor. Given the dry low level easterly fetch out of the departing high pressure, feel that favoring the lower end of the spectrum continues to be the wise choice for our northeast areas from east-central SD into southwest MN. Weak mid-upper level elongated trough lingers across the region through Sunday, with a shallow low-level unstable layer depicted on forecast soundings as surface temperatures try to warm beneath thick cloud deck on Sunday. Temperatures remain rather cool, though should be able to squeak out highs in the lower-mid 50s for Mother's Day.
The rest of the night will be mostly dry with steady or slowly rising temps as the warm front shoves the precip north into Indiana. The severe threat will begin to wind down Sunday night, with precipitation then tapering off from west to east overnight as the cold front exits to the east.
452 PM EDT Sat May 8 2021 Low pressure will track north across eastern Nova Scotia tonight then exit across the Maritimes Sunday.
321 PM EDT Sat May 8 2021 A weak warm front will lift across the area Sunday.
Lapse rates are quite steep over our west thanks to cold core of upper low over western Montana. So clouds and showers have redeveloped in the west during the afternoon as upper low dynamics drift east across our region. For the mountains, no doubt the high elevations have already seen several inches of snow, and some areas will see additional snow showers today into the evening. Upper low will slowly weaken and fill tonight into Sunday with precpiation diminsihing ovenright. Scattered showers will increase again Sunday under the cool/cyclonic flow aloft, with precip becoming more enhanced along our foothills Sunday afternoon due to some cooler air backdooring into the area resulting in a northeast upslope surface wind. As a result of the wind shift, tomorrow should be a bit cooler than today.
Shower/thunderstorm chances will increase after 09Z as a cold front moves into the region along with MVFR conditions.
1223 PM CDT Sat May 8 2021 (Today and tonight) Temperatures will warm again today as the 850mb thermal ridge moves into our area and intensifies. 850mb temperatures will warm 3 to 4 degrees Celsius along the western border of our forecast area which should easily push temperatures into the lower 90s for most of the western half of the area.
1058 AM CDT Sat May 8 2021 Light to moderate rainfall continues across portions of central and north central SD at this hour, with over three tenths measured at Mobridge so far. Low pressure and the associated rain and thunderstorms continue to advance eastward off the Rockies and into central SD early this morning. As the ridge shifts south through today, expect thunderstorm activity to taper off. Temperatures will either hold steady or fall today as rain moves in, especially as the upper ridge moves south and caa takes hold. Long range will be dominated by cool and mostly dry conditions, as an upper high drifts nearby, before the remnant upper low eventually kicks eastwards with some potential for light showers.
240 PM MDT Sat May 8 2021 Latest analysis places the upper low over Montana. The main band of precipitation, which is occurring in a region of enhanced lift rotating around the upper low, has mainly pushed off to the northeast of the forecast area this afternoon. The upper low will shift very slightly eastward tonight so expect chances for showers to continue, with the greatest QPF expected in a NW-SE oriented band along the eastern edge of our forecast area. Temperatures near the ND border remain only in the lower to mid-30s this afternoon so there could be some light snow accumulation there late tonight into early Sunday. Instability associated with the slowly moving, slowly weakening, upper trough will bring another chance of showers on Sunday.
4-8 degrees warmer today than yesterday and not as windy, though will see moderate gusts in the eastern Gorge and Kittitas Valley today. A modest plume of moisture is moving anticyclonically into the PacNW around a broad upper ridge in the eastern North Pacific per the latest water vapor imagery.
1137 AM MDT Sat May 8 2021 A small window of opportunity early this morning for 60+ MPH gusts near Arlington/Elk Mountain as the 700 hpa CAG-CPR gradient climbs to near 60 meters after 09z in advance of a surface cold front now moving into western Carbon County. Precipitation chances are likely to be on the up- tick again by Sunday night as a vigorous upper-level trough begins to dig south into the Great Basin.
/issued 803 AM EDT Sat May 8 2021/ High pressure centered in the Deep South will provide a dry and coolish northeasterly flow today. High pressure resides north of the waters today with northeast winds of 15 knots or less that diminish and become north and northwest in the afternoon. The high pressure slides offshore Sun and tracks east.
245 PM CDT Sat May 8 2021 GOES Water Vapor imagery showing a deep trough of low pressure passing through the Intermountain West early this afternoon. But wait, that's not all! Models also indicating some snowfall possible across portions of northeast IA/far southwest WI with that dry northeast flow producing evaporative cooling in the lower levels and diabatic cooling from snow rates aloft falling into the lower levels. After remnant precipitation moves off with the low to our south in the morning, the rest of Sunday shaping up to be a chillier than normal day with plenty of cumulus/isolated showers around due to fairly steep low level lapse rates under cold cyclonic flow aloft. Instability seems to linger over the area with cold air aloft on the southwestern side of the Great Lakes trough.