Aikyam-Lab/Synoptic-Bench huggingface dataset:
405 AM EDT Thu Oct 26 2017 Cool high pressure crossing the region will move offshore by Friday.
909 AM EDT Sun Aug 27 2017 High pressure over lake Ontario will move into New England today. This will allow an upper level low to drift across the Great Lakes during the early part of the work week. High temps should be a couple of degrees warmer than ydy with much of the area in the mid to upper 70s. Models in good agreement with upper level low dropping out of Canada and moving across the Western Lakes on Monday. A weak inverted trough will rotate across the area at some point during the period.
A strong upper level ridge is centered over NV and UT this morning. Mid-level monsoon moisture is rotating around the ridge into NV which will reach southern Harney and Malheur Counties this afternoon, with isolated showers and thunderstorms. A building upper ridge will keep temperatures well above normal through Monday. Circulation around the ridge pulls monsoon moisture into far southeast Oregon today, supporting isolated shower and thunderstorm development over southern Harney and Malheur counties by evening. Coverage of shower and thunderstorm development extends to the north and east on Monday as the upper ridge axis slips further east. High temperatures will near 100F in the lower valleys to near 90 in mountain valleys on Monday.
Favorable cape to cap ratios will exist in the afternoon where the trough develops.
Otherwise, expect all the clouds to keep temperatures cooler than average although high humidity will ensure conditions are not overly pleasant.
An upper level low will slowly drift southeast across the arrowhead of MN region today. An upper high over UT area with a Canadian Rockies ridge will bring a quiet weather pattern to the CONUS northern tier the first half of the work week. Did pull the low POPs over the northern valley for Tue evening although their is a chance for some isold activity along intl border from Langdon to Roseau. Week will be much warmer and slightly above seasonal norms through the work week.
An upper level ridge will continue to extend from the Great Basin into the Pacific Northwest through tonight. An axis of this ridge will run roughly from northeast Nevada to northwest Washington and Vancouver Island during the next 24 hours. Mid level capping under the ridge axis will prevent upward development of this cumulus.
644 AM CDT Sun Aug 27 2017 Aloft: NW flow will become almost due N tonight as a ridge and large subtropical high lodges over the Wrn USA with a trof over the E. The tail end of this trof will cross the CWA today. Dry and quiet wx in NNW or NW flow as a ridge dominates over the Wrn USA with a trof in the E. Slightly cooler than normal temps Mon-Tue.
Have updated the high temperature and the sky grids for this afternoon.
The Easterlies are deep overhead and extend up to well above freezing and include more than half of the weight of the atmosphere with a PWAT of 2.
944 AM PDT Sun Aug 27 2017 High temperatures will be well above normal for the first half of the week, with strong high pressure aloft over the Great Basin.
A weak cold front will bring clouds and a wind shift to the north starting this afternoon in the north and clearing the southern areas overnight. A cold front is expected to move into northwest and north-central sections this afternoon, with isolated thunderstorms developing along and ahead of it. Cooler conditions expected area-wide on Monday, owing to morning clouds and northeast winds.
The MCS could disrupt/influence what happens later this afternoon and evening with storm development near the cold front. Otherwise, models still show storms developing near the cold front late this afternoon/early evening affecting parts of northern Oklahoma then rain chances expand south tonight as the cold front moves across the area. /issued 345 AM CDT Sun Aug 27 2017/ An upper trough will pass to the northeast of Oklahoma this evening and overnight, but sufficiently close to bring a front into the state. As it drifts farther south early Monday, any support from the trough will be moving farther away to the northeast leaving the lingering front though the state Monday to give low rain chances.
911 AM EDT Sun Aug 27 2017 An area of low pressure was located near the mouth of the Tampa Bay early this morning with a trough axis extending northeast across the north-central peninsula. Rather warm mid level temperatures (-4 to -5C at 500MB) will again keep overall thunderstorm coverage on the low side and will keep wording in the isolated range. An area of low pressure located near the mouth of the Tampa Bay will keep a northeast flow in place north of Tarpon Springs into the afternoon, while a south to southwest flow is expected to the south of the low and trough axis.
602 AM CDT Sun Aug 27 2017 An upper level trough is currently located across the north central U. The trough will spread south towards the area today, then will move through the area tonight into Monday. As the trough moves south an associated cold front will move through the area. Highs this afternoon should be able to top out in the lower to middle 80s as highs in the lower 80s are expected on Sunday. An upper level ridge will remain across the western CONUS through much of the week leaving the area in a northwest flow upper level pattern.
1044 AM EDT Sun Aug 27 2017 High pressure will continue to produce dry weather and comfortable temperatures for most of this upcoming week.
1108 AM EDT Sun Aug 27 2017 Adjusted the pop grids a bit as the new near term guidance (HRRR and HiResW models) show that the dry air in the low levels will continue to impede the precipitation trying to move into the area for the next few hours, and probably stretch into the afternoon. At the sfc, large scale high pressure and dry air was poised just to our east, with weakish DPVA and low to mid level WAA ahead of low pressure at the MN/WI border bringing in deeper moisture in the mid and upper levels.
Strong high pressure will be centered just north or northwest of our region through at least the middle of the week. There is some possibility that we could see an increase in low level moisture late in the 7 day forecast (or just beyond) as the high weakens a bit and tropical moisture to our south and southeast surge northward.
Visibilities continue to drop with the lowest visibilities so far being in the eastern half of the forecast area. The GOES- 16 Fog product has suggested pockets of fog existing across much of the CWA and is supported by visibilities starting to decrease in the Pierre/Mobridge areas. For today, a high pressure ridge aloft builds in from the west resulting in sunny skies and no precipitation tonight. Lows will be in the low to mid 50s. The long wave pattern over the conus starts to buckle/amplify early in the period, with a stout western conus ridge developing. However, toward the end of the work week, the strong ridge gets knocked down a bit by energy advancing across the northern Rockies, and into the plains.
The low Cigs may then dissipate for a time late in the afternoon and early evening. The low Cigs may then dissipate for a time late in the afternoon and early evening.
Upper level high over the western CONUS, and another ridge sitting over the eastern Canadian provinces. Deepening upper low dropping down the upper Mississippi valley between the two ridges. At the surface, low pressure centered over Lake Superior with attendant cold front draping across Iowa and into Nebraska. Thunderstorms developing over eastern Iowa this morning in area of elevated moisture convergence with the low level jet. The forecast area will be under the influence of an upper level low on Monday. Expect scattered showers and a few afternoon thunderstorms, with the highest coverage along and east of the Mississippi River. Temperatures will be held down in the 70s by clouds and cooler northerly flow, coolest across the north.
High pressure aloft will remain across the Great Basin early this week, allowing for very warm and generally dry conditions. High pressure remains centered over the region this morning. This activity is expected to diminish by the afternoon, but just enough moisture remains over southern Utah to allow for some storms to develop over the higher terrain this afternoon. The ridge axis is progged to drift eastward over the next few days, and with a bit of southerly flow developing on the back side of the ridge, some moisture will advect northward, allowing for a slow increase in coverage of afternoon/evening showers and thunderstorms.
801 AM EDT Sun Aug 27 2017 High pressure under northwest flow aloft will maintain seasonably cool weather into Monday.
The upper ridge axis resides over the Divide, and the upper trough has moved well to the east. Meanwhile, an upper level ridge that covers most of the western US will expand into Montana today. The upper ridge continues to build over the forecast area tonight and Monday with an upper level high centered over Utah. Surrounding this are several troughs.
The cold front will push se toward the IL river by early evening and will redevelop scattered convection during mid/late afternoon along and west of I-55. A sprawling ridge of high pressure extending from Quebec southwestward into the lower Mississippi River Valley will gradually lose its influence over the weather across central Illinois today as a weak cold front approaches from the northwest. Airmass will continue to moisten tonight as the cold front pushes into Illinois.
1251 PM EDT Sun Aug 27 2017 High pressure over lake Ontario will move into New England today. This will allow an upper level low to drift across the Great Lakes during the early part of the work week. High temps should be a couple of degrees warmer than ydy with much of the area in the mid to upper 70s. Models in good agreement with upper level low dropping out of Canada and moving across the Western Lakes on Monday. A weak inverted trough will rotate across the area at some point during the period.
15Z Surface analysis places Tropical Storm Harvey 70 miles ESE of San Antonio Texas while a weak cold front is located over portions of Iowa and Kansas. Under the cloud cover temps are a little warmer this morning and range from the mid 60s along the KY border to lower 70s in north Mississippi.
658 AM CDT Sun Aug 27 2017 Upper level trough/low over northern MN will drop southward through WI today and tonight and send a weak cold front southeastward through our area this afternoon and tonight. Scattered showers and storms will move into portions of northeast and central MO and west central IL later this morning and this afternoon ahead of the cold front, then shift southeastward into the St Louis metro area, southeast MO and southwest IL tonight.
730 AM EDT Sun Aug 27 2017 High pressure will continue to produce dry weather and comfortable temperatures for most of this upcoming week.
This may advect slightly lower dew points in the lower 60s into northeast AL via a pseudo CAD flow along the lee of the Appalachians. An upper low over the western Great Lakes will continue to push slowly to the southeast tonight and move into the central Great Lakes by Monday morning. A surface cold front will trail southward from its parent low, southeastward and into the Mid Mississippi Valley. As the upper low continues is southeastward progression, the upper trough will amplify and dig into the Mississippi Valley. The cold front will move slowly eastward through the day Monday, and may stall just to our northwest.
528 AM MDT Sun Aug 27 2017 Strong upper ridging has set up across the western CONUS with quiet northwest flow aloft over the northern Great Plains. Dry weather is expected today and will continue through the first half of this week as the western CONUS ridge moves very little.
634 AM CDT Sun Aug 27 2017 Convective complex over central Nebraska has developed just ahead of a cold front currently pushing into eastern Nebraska and northwest Iowa.
1256 PM EDT Sun Aug 27 2017 Low pressure over Western Great Lakes will help sustain mid clouds (around 10 kft) through tonight over southeast Michigan. Chances for showers will gradually increase as the low levels begin to saturate, with showers likely on Monday along with ceilings around the upper end of mvfr.
1036 AM EDT Sun Aug 27 2017 Canadian high pressure will remain in charge through Monday providing dry weather and below normal temperatures. High pressure will be in control of the weather today but slightly shift to the east. High pressure remains in control today. Highs maybe a touch warmer than yesterday in low-mid 70s. High pressure slides more over New England, but maintains a ridge axis through CNY and NEPA.
728 AM EDT Sun Aug 27 2017 The 09z water vapor loop and RAP analysis shows a broad mid-level trough and low building in from MN and western Ontario. Strong moisture transport and modest q-vector convergence and isentropic ascent ahead of the mid-level trough was supporting numerous showers across Upper Mi early this morning. The mid level low and trough will remain nearly stationary over the western cwa today as continued q-vect convergence and isentropic ascent ahead of it will support scattered to numerous showers across the fcst area.
Have continued with a small chance of an afternoon shower or two across the higher elevations, where there will be additional orographic lift. Chattanooga Airport, TN 86 67 85 67 / 20 10 10 0 Knoxville McGhee Tyson Airport, TN 85 65 82 64 / 10 10 10 10 Oak Ridge, TN 86 65 83 64 / 10 10 10 10 Tri Cities Airport, TN 82 58 79 61 / 10 10 10 10.
/issued 345 AM CDT Sun Aug 27 2017/ WV imagery shows a strong upper ridge firmly anchored over NV/UT and covering all of the western CONUS.
758 AM EDT Sun Aug 27 2017 The forecast area will be between a frontal boundary off the Southeast Coast and high pressure ridging southward along the Appalachians through tonight.
1004 AM MDT Sun Aug 27 2017 The tail end of a short wave trough moving across the Central Plains brought clouds and a few sprinkles to the area this morning. A cold front that pushed through earlier this morning will bring cooler temperatures. Airmass is expected to remain capped at the lower elevations with isolated weak storms over the higher terrain. An upper level high will remain centered over the Great Basin with mainly dry nnw flow aloft over nrn CO. There will probably be enough moisture for a few high based storms over the higher terrain this aftn otherwise it looks dry across the area.
1016 AM EDT Sun Aug 27 2017 High pressure will gradually shift from southeastern Canada today to New England on Monday, bringing continued fair and cool weather to our region.
The latest RAP analysis shows a 850mb trough axis from near Tampa to Daytona Beach. The HRRR seems to be focusing these chances in the north after the low cloudiness breaks up. This is close to the low level trough and seems very reasonable, especially since less mid-high level debris cloudiness looks likely there.
922 AM MDT Sun Aug 27 2017 Strong ridge aloft will bring sunny/warm/dry conditions and much lighter winds to the cwa today. Expect temps into the lower 90s for most locations. Strong ridge aloft will bring sunny, hot and dry conditions to the area for the next several days. Temperatures will be in the lower 90s this afternoon, climbing into the mid-upper 90s for Monday. ridge.
Only isolated shower and thunderstorm activity are present across the area, while more concentrated activity, associated with the low, remains well to our north. Temperatures are gradually climbing through the low to mid 80s with dew points in the mid to upper 70s. A weak low over central Florida and a ridge axis across the Florida Straits will keep winds light out of the south to southwest.
/Issued 311 AM CDT Sun Aug 27 2017/ Temperatures will continue to be a few degrees below normal Today with the area between a cold front approaching from the north and Harvey to the south.
Coverage of dense fog appears to be the worst and most consistent in the Wahpeton/Breckenridge areas. An upper level low will slowly drift southeast across the arrowhead of MN region today. An upper high over UT area with a Canadian Rockies ridge will bring a quiet weather pattern to the CONUS northern tier the first half of the work week. Did pull the low POPs over the northern valley for Tue evening although their is a chance for some isold activity along intl border from Langdon to Roseau. Week will be much warmer and slightly above seasonal norms through the work week.
Additional light rain showers today across the Northland as an area of low pressure exits the region, then high pressure builds in towards Monday. High pressure builds in towards Monday leading to decreasing clouds and warmer temperatures.
1134 AM CST Thu Dec 21 2017 Patchy to areas of drizzle will impact portions of central and east-central Kansas this morning, generally along/north of Highway 56, in vicinity of warm front/triple point taking shape across central Kansas. As colder air begins blasting southeast across the region in wake of a strong cold front, thinking a period of very light freezing drizzle mixed with flurries are possible this afternoon and evening, generally along/north of the Highway 56 corridor. Otherwise, a wide range in temperatures will exist across the region today, with 50s-60s ahead of the cold front across southeast Kansas, and temperatures falling into the upper 20s by early evening across central Kansas in wake of the front, ushered in by strong/gusty north winds. A long stretch of below normal temperatures will start Friday, as longwave troughing becomes firmly entrenched across North America.
Later this evening and into Thursday night, a cold front will sag southeast into the region, and bring some MVFR ceilings, some patchy light showers, and a wind shift from the south to southwest to northwest. Mid- morning temperatures were in the mid to upper 50s, while dew point temperatures in the lower to mid 50s.
322 PM CST Thu Dec 21 2017 The cold front has made it into the I-40 corridor across western OK this afternoon, and is nearing the I-44 corridor now across southwestern OK. The mid to upper level low over the four corners region will slowly progress southeastward overnight. For now, it appears only a small corridor near I-44 across central OK may briefly experience freezing drizzle early in the morning. Large scale ascent will increase late Friday as the now positively tilted trough moves over OK.
However, changes are on the way tomorrow with a cold front to move across late Friday afternoon and evening.
Already, cloud cover ahead of northward moving warm front is poised to move back into southwest portions. In advance, warm advection will increase as the surface warm front moves through the area.
1135 AM CST Thu Dec 21 2017 Current GOES water vapor showing well developed trough of low pressure moving across the Dakotas into MN. Meanwhile, a closed low was pushing toward the central Rockies. The f-gen band of light snow slowly sinks south/weakens later this afternoon into this evening while portions of far southwest WI/northeast IA moisten up in the lowest 2-4kft with no cloud ice. This could shake out some light drizzle/freezing drizzle for areas generally south of a line from Richland Center WI to Waukon and New Hampton IA late this afternoon into this evening which could impact the commute.
Surface temperatures are above freezing across much of the MKX forecast area, with the exception of a line northwest of the Dells to Green Lake. These will drop after dark, but areas near the lake will be tempered by the steady east winds and may not drop below freezing tonight until the precip ends. This would mean any snow could change back over to freezing drizzle for a short time before ending.
A cold front/elongated pressure trof will trail this low to its southwest and will pass through the PAH forecast area Fri.
Warmer then for Friday with west to northwest downslope flow. H850mb temperatures will rise to around minus 3C to minus 5C supporting highs in the lower to mid 30s, with upper 20s across deeper snow cover.
Current satellite imagery shows westerly winds undercutting the high pressure ridge near the west coast and brining some moisture into Idaho. The models have been having quite some difficulty with the presence of that ridge lately.
A cold front was located from northeast Oklahoma through west Texas and into eastern New Mexico. The cold front will continue to move east on Friday but at a much slower rate.
Zonal flow aloft this morning will gradually become southwesterly as a longwave trough crosses the Four Corners region and ejects toward the southern Plains tonight. A warm front will lift northward to our west ahead of the approaching frontal system.
The low and associated cold front will move through the area this evening. An upper level trough will push northeast across the southern Plains on Friday. As the upper level trough continues to track into the region, colder temperatures will spread into the mid levels and the rain will mix with and change over to light snow.
Light drizzle or freezing drizzle will remain possible into the early evening hours. As for temperatures, lows tonight are expected to range from the lower 10s across west central Kansas to lower 20s across south central Kansas. Cold air will continue to spill into the area this weekend as a large upper level trough swings southward across the Great Plains.
Some high clouds are moving over the Northern Rockies ahead of the next cold front that will impact the region tonight and tomorrow.
Mid- morning temperatures were in the mid to upper 50s, while dew point temperatures in the lower to mid 50s. A cold front will cross the region tonight with the wind shifting into the northwest and MVFR ceilings developing during the night.
1048 AM CST Thu Dec 21 2017 Skies are cloudy across the forecast area this morning with temperatures ranging from the mid 40s to the lower 50s. With the low clouds over the region, temperatures are not warming as much as expected so have lowered forecast highs for this afternoon. Cloud cover and fog will be slow to lift this morning, but by the afternoon expecting at least some breaks in the clouds which will help to warm temperatures into the low to mid 60s.
340 PM EST Thu Dec 21 2017 Warm and dry weather is expected to continue through the end of the week and early weekend as broad high pressure dominates the weather pattern. Low temperatures will remain in the mid 60s across the southern counties and east coast metro areas and in the low 60s across the interior and west. A weak cold front stalls over over north-central Florida over the next few days, some moisture will pool over the area allowing for early morning fog to develop the next several nights. High temperatures will warm up into the low 80s along the east coast metro and mid 80s out west. Models continue to suggest next cold front approaching the panhandle of Florida this weekend will weaken the mid level high pressure over the region. High pressure will dominate through the weekend.
An upper level long wave trough is progged to move SE across the rockies and W TX. In response to the trough, the LLJ will continue strengthening through tonight with speeds of 35-40kts. Went above models on wind speeds Fri given the LLJ having better chance of mixing due to warmer temps. Winds are expected to diminish by late afternoon and evening as a cold front begins moving into the north and west CWA. Went likely with the shra's and chc with the tsra's where the highest pops are. Much cooler conditions expected behind the front, with the convection shifting east toward Sat morning.
305 PM EST Thu Dec 21 2017 Warm front has lifted north to the I-64 corridor, with fairly extensive stratus spreading in behind it.
Upper level ridge over the region today. 12z models continue to show a strong cold front moving through the area Friday with snow.
140 PM MST Thu Dec 21 2017 Upper trough stretches through the northern plains and over the Rockies, with the upper low over the Four Corners region. With high pressure over the Dakotas, winds are generally variable around 5 to 10 kts, and temperatures early this afternoon are still in the teens. Upper trough will weaken tonight as it shifts eastward, and a broader trough will begin pushing into the region with another cold front.