Aikyam-Lab/Synoptic-Bench huggingface dataset:
1251 AM EDT Mon May 29 2017 A cold front will move across the area this afternoon bringing a slight chance of showers and thunderstorms.
638 PM CDT Sun May 28 2017 A cold front continues to work its way slowly through the state.
/issued 350 PM EDT Sun May 28 2017/ Rest of Today and Tonight: High pressure continues to dominate across South Florida with dry conditions and warm temperatures and highs in the mid 90s.
Would not expect too much redevelopment overnight despite the approaching weak cold front so plan to lower/drop POPs over the northwest 1/2 of Middle TN. Current regional radar imagery along with consensus model solutions illustrating fact that prefrontal convection impacting terminals ahead of/along approaching sfc cold front may be iso at best. After 29/14Z, sct cu CKV/BNA to sct/bkn cu CSV will prevail per weak sfc ridging/zonal flow aloft.
Cold front and associated thunderstorms have pushed south of the area and extend across south central TX/LA. Temperatures overnight will be on the cool side - in the lower 50s across portions of NW Arkansas.
513 PM MDT Sun May 28 2017 19z surface analysis had low over southern SK with trough into NE and another into eastern MT. Upper low spinning over the southeast SK with pinwheeling disturbances rotating around it into the Dakotas.
624 PM CDT Sun May 28 2017 Area should see increasing SHRA/TSRA coverage this evening as activity builds in from the N and NW along and ahead of a cold front. Coastal troffiness is expected into midweek. Deeper moisture and convergence along the trof (along with some passing upper impulses) will probably trigger overnight and morning precip closer to the coast followed by inland expansion with daytime heating. Looks like the trof could wash out and we'd lose a surface focusing mechanism later in the week, but atmos still looks plenty moist for higher end & diurnally driven pops through the remainder of the work week.
629 PM CDT Sun May 28 2017 A slow-moving cold front is triggering widely scattered convection across east-central Illinois this afternoon. Monday will start out sunny, but diurnal clouds will develop in advance of a weak trough pivoting around low pressure centered over the Great Lakes as the day progresses. NAM/GFS/WRF-ARW/WRF-NMM all agree that widely scattered convection will develop in advance of the trough, so have included 20 PoPs across all but the far NW late Monday afternoon. Have lingered low chance PoPs south of I-70 into Monday evening as the trough slowly settles southward into the Ohio River Valley. Upper low centered over Ontario will be the primary influence over the weather across central Illinois through the middle of the week.
613 PM CDT Sun May 28 2017 Closed upper low over southwest Ontario this afternoon will be the primary weather feature for the area in the short term.
/Issued 309 PM CDT Sun May 28 2017/ Cold front is currently across N TX through central AR and will focus any further convection south and east of the forecast area.
913 PM EDT Sun May 28 2017 Scattered showers and thunderstorms will be possible this evening as a weak cold front pushes through the area. Scattered thunderstorms developed along and ahead of weak sfc cold front approaching from the west. Expect lows from the upper 50s west to the lower 60s east. Some energy rotating around an upper level low centered over the northern Great Lakes will push down toward our area later Monday afternoon into Monday night.
738 PM EDT Sun May 28 2017 Shower and thunderstorm chances continue until the passage of the cold front overnight. Weak high pressure will keep Memorial Day mostly dry with seasonable temperatures. Evening update made to nix the flash flood watch as the focus for heavy rain and localized flooding has shifted northward in the vicinity of the warm front with residual outflow boundaries allowing for additional storms to develop. Overall, expect strength of storms to diminish with time with the loss of heating, but threat for heavy rain will linger until the approach of the cold front tonight. Cold front is still progged to pass overnight, with it east of the region by 12z.
730 PM EDT Sun May 28 2017 Showers and thunderstorms through tonight as cold front passes.
1013 PM EDT Sun May 28 2017 Showers and thunderstorms through tonight as cold front passes.
Main trough axis will slowly drift eastward this morning as a surface cold front moves across Lake Erie. Surface boundary looks to catch up to the exiting trough this afternoon, which will provide an additional eastward push of the moisture. To the west of the axis, a decrease in cloud cover is expected, as drier and cooler air drives to the southeast. Dry and cooler tonight.
VLD, TLH and ECP have the highest chances to observe TS after 18z. Deep layer ridging will remain in place across our area through the rest of today and tonight. Heat indices will remain in the low-mid 100s across much of our area this afternoon through the early evening with temperatures in the lower-mid 90s and dewpoints in the 70s. The local area will be sandwiched between a northern stream trough moving through the Mississippi and Ohio Valleys and a TUTT moving through the eastern Gulf. At the surface, a frontal boundary associated with the northern stream trough will slide into the Southeast and eventually bisect the Tri-State region from northeast to southwest by Saturday. Highs will be in the lower to middle 90s with heat indices between 100-105.
421 AM CDT Fri Aug 18 2017 A chance for isolated/scattered showers/storms today across northern Minnesota and parts of northwest Wisconsin under partly sunny skies today, then warmer and mostly sunny on Saturday. Warmer Saturday as a mid-level ridge building across the Great Plains leads to broad-scale subsidence, though scattered diurnally driven afternoon "fair weather" cu expected.
There will be a slight chance of showers and thunderstorms each day beginning Saturday, particularly across eastern Arizona and over the higher terrain north of Phoenix. Streamline analysis reveals the moisture is associated with an upper-level anticyclone and a low-level inverted trough. Further west near San Diego, another weak mid-level trough is present. Increasing southerly component to the mean flow between the aforementioned trough to the west and a building ridge across NM will result in continued height increases today. Latest SREF depicts the trough to the west and the ridge across TX becoming the predominant weather features through the weekend.
526 AM EDT Fri Aug 18 2017 A cold front will move through the region Friday triggering showers and thunderstorms.
144 AM EDT Fri Aug 18 2017 A cold front will move through the region late in the overnight and into the morning on Friday. High pressure will then briefly move into the region, however another disturbance is expected to bring additional precipitation chances to the region for Saturday. Temperatures were adjusted for a few hours this evening given the cooler post-thunderstorm atmosphere for the I-71 corridor, but are expected to rebound to be fairly uniform with overnight lows in the upper 60s to around 70. The s/w pulls away Saturday night, allowing high pressure to build in at the surface.
For Saturday, there is a bit better chance for some isolated showers, since the mid level theta-e ridge will be moving into the area overnight over the gulfmex then inland during the day.
An upper level ridge that was centered near the northern Gulf of Mexico has been suppressed by a trough thats moving across the Mid-Mississippi and Ohio River Valleys. Strong daytime heating and decreased subsidence will allow for afternoon thunderstorms to develop, with higher coverage in northern portions of the forecast area that are closer to the trough. Model soundings indicate an inverted-V profile in the lower levels which suggests that the main threat with storms will be downburst winds. A secondary trough will dip out of Canada into the Northern Plains tonight and cross the Great Lakes Saturday.
157 AM EDT Fri Aug 18 2017 High pressure will shift east tonight as a warm front approaches from the southwest. Showers and thunderstorms are possible with the warm front after midnight tonight into Friday, especially in northern New York. Showers will taper off Friday night, and remain possible on Saturday mainly over the higher terrain.
Look for one more day of minor warming today as a ridge of high pressure continues to build into our region. Synoptically a ridge of high pressure will move across our region today which will lead to a few degrees of warming. Big question will be how much the marine layer will change with the low overhead.
316 AM CDT Fri Aug 18 2017 An upper level short wave trough moving into the northwest CWA early this morning will slowly move southeast across the Panhandles today. On Saturday, the center of the upper level ridge will be over southeast Texas. The upper level ridge will shift to the southeast U.
413 AM MDT Fri Aug 18 2017 Fairly benign period of weather as weak split flow under high pressure remains over the southwestern US.
227 AM CDT Fri Aug 18 2017 Quiet weather expected for a short time today as a narrow ridge of high pressure drifts eastward. Temperatures will still remain on the warmer side, mainly mid 80s, although dew points in the 60s will make it more comfortable.
333 AM EDT Fri Aug 18 2017 A warm front will approach from the southwest today and will gradually push east of the region tonight. A slow moving cold front will cross the region Saturday.
Flat upper ridge pushing east from the northern Rockies today will pull a hot and dry airmass out of the Great Basin. The Northeast Montana forecast is picked up Saturday evening with zonal flow aloft and a dry cold front having passed through the area during the day.
641 AM EDT Fri Aug 18 2017 A cold front will move through the region today.
A lee trough will develop over the region on Saturday. That lee trough will interact with a CAPE values ranging from 1000 - 1500 J/kg over the far eastern plains.
1222 AM CDT Fri Aug 18 2017 Slightly cooler and less humid air is filtering into central and southeast Illinois in the wake of a weak cold front. Neutral upper-level flow and surface ridging will also build in behind the front. 19z/2pm surface analysis shows a cold front advancing slowly eastward across central Illinois, with the boundary essentially along the I-55 corridor. Once the front passes, skies will become clear and low temperatures will drop into the lower to middle 60s.
401 AM EDT Fri Aug 18 2017 A cold front will move through the region Friday triggering showers and thunderstorms.
318 AM EDT Fri Aug 18 2017 A weak high pressure ridge will move across our area today providing dry weather. A secondary cold front will move through tonight and Saturday, likely causing showers and a few thunderstorms.
Additional convection which appears more forced by the H5 trof will drop from southwest MB and merge with convection across the Devils Lake Basin through the early morning hours. West central MN will stay a bit cooler and cloudier in scattered showers. with highs rising only into the lower 70s.
But on the plus side temperatures at 3AM are actually in the 70s instead of the low 80s like the last couple mornings. Heat index values especially along the coast will be in the mid 100s, but there should be enough mixing with SW/S flow for inland areas to see a drop in dewpoints and heat index values only in the low 100s. Aloft the weather pattern still features elongated ridging which will limit convection again today and one of the reasons why it will be hot outside with high temperature in the upper 90s. Upper level troughing will stay over the northern U. In this case, there is a tropical upper tropospheric trough (TUTT) over Cuba and the Bahamas.
By Saturday, only isolated diurnal activity is expected as the ridge begins to build over the Southern Plains. SChc PoPs will return to northern OK Sun AM atop the ridge. The next chance for widespread rainfall will likely return around Wed with another cold front. There are still some significant discrepancies though regarding the depth of the upper trough/progression of the front so kept max PoPs around 40 percent.
213 AM MDT Fri Aug 18 2017 Upper level analysis shows a wave pushing through the northern plains, with a ridge building over the western CONUS, and northwest flow over the CWA. As the upper ridge shifts over the region, weather will become dry and warm. The thermal ridge axis will cross the CWA Saturday, and temperatures will warm into the 90s. At the upper levels, a Canadian trough will begin to flatten the ridge, placing the northern plains in zonal flow. A cold front will push into northwestern SD during the afternoon, creating some breezing winds there.
A dry cold front will push through western Montana this afternoon and evening, which will bring gusty westerly winds to much of the area.
535 AM CDT Fri Aug 18 2017 Quiet weather expected for a short time today as a narrow ridge of high pressure drifts eastward. Temperatures will still remain on the warmer side, mainly mid 80s, although dew points in the 60s will make it more comfortable.
147 AM EDT Fri Aug 18 2017 A cold front will move through the region Friday triggering showers and thunderstorms.
A dry cold front will push through western Montana this afternoon and evening, which will bring gusty westerly winds to much of the area. The higher wind gusts still look to be between 6pm-9pm MDT, though conditions will be breezy throughout the afternoon and potentially overnight tonight into Saturday as well.
A rather strong storm system near the upper Great Lakes was bringing a flow of warm and humid air to the area ahead of a cold front today. The actual cold frontal passage and change in air mass is not expected until Friday, and additional showers and thunderstorms can not be ruled out ahead of the front on Friday, especially in southeast KY where the front will arrive the latest. Friday night the entire area should be dry as surface ridging builds in from the west. The drier air mass should also allow for somewhat cooler lows. The period will begin with the upper level trough axis swinging across the Ohio Valley on Saturday.
318 AM PDT Fri Aug 18 2017 Warming temperatures, smoke from the fires and a thermal trough over the coast are the three big stories for this weekend. To start, there is a pretty nice tilted ridge off the Pacific extending into our warning area today and into the weekend. This, along with the thermal trough along the coast, will bring back warmer than average temperatures across the region, specifically south of Douglas county into northern California Friday.
331 AM MDT Fri Aug 18 2017 Water vapor imagery showing upper trof sweeping across the region with even drier air filtering into Northern Colorado. There are some mid level clouds and even a few showers on the leading edge of this trof over the northeast plains but much of this will be gone by daybreak. Overall moisture levels have continued to drop behind the trof, with integrated precipitable water trends down around a half of an inch over the Front Range and about. Behind the trof, mid level subsident inversion develops along with the drier airmass, so do not expect showers or thunderstorms over the plains. Moisture will be increasing in the flow aloft to allow convection mainly over the high terrain and Palmer Divide, as well as over the far eastern plains where better low level moisture will be found.
SHORT TERM (Today through Saturday): 500mb subtropical ridge across the northwest Gulf of Mexico today will move westward across the Texas coast Saturday.
Near the surface, a lee side trough of low pressure is anchored across eastern Colorado. With that said, it looks like the most probable situation is that convection will develop across the higher terrain of Colorado and then slowly drift towards western Kansas. As a result, have the higher pops in the western zones and lower values to the east. Light southeasterly winds will persist across western Kansas overnight as a weak lee side trough remains anchored across eastern Colorado. Winds are then expected to become more south to southwesterly 10 to 20kt after daybreak this morning as the lee side trough begins to edge into western Kansas.
Fairly warm temperatures are expected today as an approaching cold front is slow to push through western Kansas. A southwest and eventually a westerly downslope flow will set up across southwest Kansas drawing warmer air into the area. Should expect to see highs reaching the lower to mid 90s(F) this afternoon. Light southeasterly winds will persist across western Kansas overnight as a weak lee side trough remains anchored across eastern Colorado. Winds are then expected to become more south to southwesterly 10 to 20kt after daybreak this morning as the lee side trough begins to edge into western Kansas.
Deep layer ridging will continue to influence the weather across the tri-state region today as hot temperatures and lower coverage of showers and thunderstorms are expected. Weak northwesterly flow around the periphery of the high will keep the sea-breeze pinned to the coast through much of the day, and drier air present across most of the region will supress convective coverage.
The low pressure will slowly track eastward into western Quebec by Saturday morning. Certainly expecting a more prolonged period of scattered light rains into the higher terrain of nrn lower due to upslope, and across eastern upper within a bit better low level convergence. High pressure and building mid level heights for the second half of the weekend. High temperatures 5-8 degrees warmer than Friday, with most locations in the middle and upper 70s.
Drying and subsidence moves into the area during the day as mid level heights rise and ridging moves into area. Monsoonal moisture continues to advect into the central Plains region Friday night and Saturday as the H5 ridge remains in place over southeast Texas. H7 trough sets up in the lee of the Rockies Saturday afternoon, giving us a chance of thunderstorms mainly east of the Kansas, Colorado border.
VLD, TLH and ECP have the highest chances to observe TS after 18z. Deep layer ridging will continue to influence the weather across the tri-state region today as hot temperatures and lower coverage of showers and thunderstorms are expected. Weak northwesterly flow around the periphery of the high will keep the sea-breeze pinned to the coast through much of the day, and drier air present across most of the region will supress convective coverage.
646 AM EDT Fri Aug 18 2017 A weak high pressure ridge will move across our area today providing dry weather. A secondary cold front will move through tonight and Saturday, likely causing showers and a few thunderstorms.
354 AM CDT Fri Aug 18 2017 Drier air is beginning to work into the Mid-South early this morning as a weak cold front slowly moves through the area.
329 AM EDT Fri Aug 18 2017 A cold front will move into the area tonight and stall.
A weak cold front will approach and cross the area today. Highs will be a few degrees cooler today due to the northwest flow, staying in the 80s areawide.
119 AM EDT Fri Aug 18 2017 Latest 19z WV imagery and RAP analysis indicated a vigorous mid/upper level low over far NW WI fast approaching western Upper Mi. Radar imagery shows increasing shower coverage as forcing ahead of the mid-upper low combines with MLCAPE values 500-1000 j/kg highest over Menominee County. However, it won't be a day to go to the beach due to clouds/shra and temps struggling to get out of the lower 60s over the n central and ne fcst area where shra/cloud cover will be most persistent. Farther west and for downsloping locations south central in nw flow, high temps Fri could reach into the lower 70s with the possibility of afternoon breaks in cloud cover.
209 PM EDT Wed Oct 18 2017 High pressure will drift off to the southeast tonight and Thursday as a weak cold front approaches from the west.
A weak warm front will shift across Orofino, Pierce and northwest Montana tonight producing areas of light rain this evening and overnight.
1105 AM MDT Wed Oct 18 2017 Canadian upper trough is flattening the upper ridge as it moves eastward, pushing clouds into the region. The cold front will quickly cross the Dakotas this morning, producing gusty northwesterly winds across the SD plains. Upper ridge will rebuild for the end of the week, and southwesterly flow will help temperatures reach the 70s and 80s.
128 PM EDT Wed Oct 18 2017 High pressure will maintain dry weather and warmer than normal temperatures through the weekend. Mid level ridging moves into New Eng today with rather dry column and moderating temps aloft. High pressure builds south of New England today, resulting in plenty of sunshine and milder W/SW flow with highs in the 60s and lower 70s. Highs should end up a few degrees warmer than today, mainly in low to mid 70s, except 60s near south coast, Cape Cod, and Islands. This will fall a bit short of tomorrow's record highs which are in the low to mid 80s (BOS 84 in 1945, PVD 83 in 2016, BDL 82 in 1963, ORH 81 in 1963).
1250 PM CDT Wed Oct 18 2017 Central and southeast Illinois remain sandwiched between slowly departing high pressure and a slowly approaching frontal system. The abundant insolation and southerly winds will push temperatures a little warmer than yesterday, with most areas topping out around 70 degrees. High pressure ridge axis stretches from the Southern Plains to the Mid Atlantic coast. High pressure maintains control for Central IL with another mild day for the second half of October. Todays highs will climb into the lower 70s, with southerly winds continuing the warm air advection for the region. The warmer airmass in place will keep the overnight lows tonight in the lower 50s/upper 40s.
Aloft - Troughiness from the Midwest to the southeast U. slides east to the Atlantic Thu as ridging builds into the nation/s mid- section. Surface - High pressure on the Mid-Atlantic coast builds down to the southern Appalachians by late Thu. ridging down across the Gulf and FL through the period. For Thu the approaching upper ridge will turn winds at mid and upper levels to northwesterly and result in subsidence and drying aloft with a large swath of air with PWAT values of 1 to 1. Highs run above normal with the highs Thu a bit above this afternoon readings. thanks to the upper ridge.
VFR conditions will continue going into tonight, with light winds under weak high pressure extending over the area from the northeast. The air column is still relatively dry, but dew points will slowly recover tonight, reaching the low to mid 60s early Thursday, enough to support patchy to areas of fog under mostly clear skies. /issued 437 AM CDT Wed Oct 18 2017/ SHORT TERM (Now through Thursday): Broad 500 mb ridging overhead will shift east over the central Gulf of Mexico by Thursday. The higher dew points, along with light winds and mostly clear skies may allow some patchy fog to develop across the ranchlands and brush country overnight. High temperatures Thursday will range from the low to mid 80s near the coast to the upper 80s to around 90 degrees across the west.
Issued by National Weather Service CHARLESTON WV 159 PM EDT Wed Oct 18 2017 High pressure will result in dry weather and a warming trend into the weekend. High pressure will dominate with little moisture to speak of.
518 PM EDT Wed Oct 18 2017 High pressure will drift off to the southeast tonight and Thursday as a weak cold front approaches from the west.
530 PM EDT Wed Oct 18 2017 High pressure will maintain dry and warm weather through the weekend. No major changes were needed as high pressure continues to suppress rain chances. The building high pressure dome will continue to moderate temperature through the weekend.
Flat zonal ridge will move across the area tonight and exit into the Dakotas Thursday morning. Thursday: Flow aloft will swing from a westerly direction into a more southerly direction as a high pressure ridge moves to the east and an upper trough moves inland from the Pacific NW. A thermal ridge is forecast to build back over Montana allowing for a rapid rebound in high temperatures mainly in the 70s.