Aikyam-Lab/Synoptic-Bench huggingface dataset:
336 AM EDT Tue Aug 29 2017 Short term forecast period marked by a shift to cooler and wetter conditions as the state begins to see more of an impact from Tropical Storm Harvey. Temperatures will be noticeably cooler Wednesday due to the cloud cover and precip activity, with highs only in the 70s across the northern half of the state.
Mostly clear skies will prevail tonight, with light winds and overnight lows mainly in the lower and middle 60s.
1145 PM MDT Mon Aug 28 2017 A 594dm high pressure center is centered over southwest Utah early this afternoon with northerly flow aloft over the area. This high pressure center will remain nearly stationary through the period. Low temperatures tonight in the low to mid 50s which is a few degrees below normal. With the CWA remaining downstream of a highly amplified upper level ridge, this period should be dry and warm.
Clear skies across the region early this morning with the higher clouds streaming up from the south remaining mainly to our east.
Issued by National Weather Service ALBANY NY 212 AM EDT Tue Aug 29 2017 A large high pressure system continue to persist across the Northeast and the Canadian Maritimes.
341 AM CDT Tue Aug 29 2017 Dry and very warm weather will continue through today as the region remains under the influence of ridging aloft. Currently, broad low pressure remains over eastern Montana/Wyoming. Cool high pressure was over the Great Lakes and Ohio Valley, with another high pressure airmass over central Canada. A frontal boundary separated the two high pressure centers, extending from Lake Winnipeg across southern Saskatchewan. At upper levels, a well- established thermal ridge was over the western US extending north along the Canadian Rockies.
A strong upper level high pressure system will remain anchored over the Utah/northern Arizona region through the next few days. To the east of the high, upper level northerly flow will persist over the central High Plains. At the surface, high pressure will be nearly stationary from the western Great Lakes into the central High Plains. With gulf moisture cut off by the low level flow across the southern Plains, this generally subsident pattern will result in mainly clear skies over western Kansas. With full sunshine, temperatures today should be able to top out in the mid to upper 80s while tonight should see lows back into the mid 50s given the lower dewpoints across the area.
220 AM EDT Tue Aug 29 2017 Low pressure will move NE, away from the NC coast this afternoon.
With some low level cloud cover and extensive mid and upper level cloudiness, low temperatures will only fall into the lower 70s across the region. A deep-layer subtropical ridge (i.
Temps during the short term will be much warmer out west with highs in mid 90s with low to mid 80s across the northern Coastal Bend into Victoria Crossroads.
an upper trough will lift northward with the flow aloft becoming zonal during the short term.
411 AM EDT Tue Aug 29 2017 An upper level trough will move across the region today.
Temperatures ranged from the low 60s to about 70F with light to calm winds. A pocket of drier air/subsidence in the wake of yesterday's passing midlevel trough will keep any convection weak and isolated.
An upper level ridge, currently situated over the region, will continue its progression east through the short-term; as it does so, a southwesterly flow aloft will strengthen and bring in drier air today. This will limit moisture across southeast Oregon, confining thunderstorm development this afternoon mainly to the higher terrain of southwest Idaho. As today progresses, an upper level trough off the Pacific coast will creep inland.
Strong high pressure will continue over the Northern Rockies today. One of the bigger impacts from this ridge is stable conditions which will inhibit any significant dispersion of smoke. It's very dry at the lower levels so any storm that may develop will have little if any rainfall and have some gusty outflow winds of 20-40 mph. A weather disturbance entering the Pacific Northwest Wednesday will weaken the ridge.
134 AM EDT Tue Aug 29 2017 Low pressure will move slowly east across the Midwest tonight and Tuesday causing scattered showers and a few thunderstorms. High pressure will build in from the west behind this system providing fair weather Wednesday.
Winds today ended up being stronger than forecast across central SD, so have been adjusting wind grids towards the latest HRRR runs which have been doing a good job capturing the higher winds. Once again lowered ABR cooler than guidance as winds will likely drop to around 5 knots or less towards sunrise. The upper flow will be dominated by a 4 corners high, with an eastern CONUS trough and thus mainly northwest flow aloft. There is a subtle ridge axis overhead so subsidence can be expected for most of the extended. There is a brief period where an upper trough passes across the northern tier of the CONUS that will briefly suppress the ridge, resulting in a short period with a chance for precipitation.
Today Through Wednesday Night The weak cold front that moved into the state on Mon has stalled over the CWA. The highest amounts will be across the far SRN/SERN counties.
and a large upper ridge over the western portion of the country. with some locales near the KS/NE border seeing up to the low 60s.
336 AM MDT Tue Aug 29 2017 Strong upper ridging is persisting across the western two thirds of the CONUS with northwest flow continuing aloft over the Great Plains into the upper Midwest. Little change to the pattern through tomorrow though some eastward movement to the ridge is expected.
Synoptic Setup: A high pressure heat dome resides over the western half of the CONUS with a weak ridge developing into southern british Columbia. Cooler air to the northeast will generate a thermal boundary that is expected to drop south Tuesday afternoon. Today through tonight: expect the ridge to keep conditions dry and clear to partly cloudy and warm. Wednesday: By the afternoon most of the cool air should have exited the area as the ridge axis to the west begins moving into central Montana.
For the rest of today, a closed upper low will slowly push across the southern Great Lakes, with a weak surface boundary sinking into the Ohio River Valley. Lows should be in the low to mid 60s. Highs in the low 80s are expected.
Potential tropical cyclone ten positioned just off of the South Carolina Coast is forecast to move northeastward along the coast toward the Outer Banks today and continue pushing off to the northeast. Strong upper ridge will remain entrenched over the Four Corners region. The low will accelerate well off to the NE Wednesday. Upper and surface circulations associated with Harvey expected to move slowly near the western Gulf Coast into the Lower Mississippi Valley.
/Issued 259 AM CDT Tue Aug 29 2017/ Surface ridging and light northeasterly flow has brought in drier low-level air.
652 AM EDT Tue Aug 29 2017 High pressure will slowly slide south of the region later today into Wednesday.
Harvey is still expected to gradually accelerate northeast beginning tomorrow as it phases with mean troughing over the lower and middle Mississippi Valley, so effects of this locally will be zero. The greatest challenge in the coming days befalls low temps as strong radiational cooling unfolds each night within dry surface ridging.
Potential Tropical Cyclone Ten will move near or over the coast of the Carolinas today and out to sea by tonight.
Cold front will approach the region from the north today. Considering high temperatures yesterday, locations just ahead of this feature at peak heating should get into the low 90s (portions of northeast North Dakota and northwest Minnesota), with slightly cooler temperatures to the south. As the cold front propagates through the region this evening, isolated thunderstorms will be possible. It could turn out all thunder activity will be east of the region (weaker capping due to slightly cooler mid-level temps), but did keep isolated thunder east of the valley overnight with some CAMs indicating potential.
Elsewhere an upper ridge was centered near KLAS while an upper low moved east across the Great Lakes. At the surface, A broad area of high pressure was set up from the southern high plains through the upper Midwest with a cold front across central OK and southern MO. Longwave ridging over the western CONUS will continue to dominate the synoptic pattern for the latter half of the week and through the holiday weekend.
154 AM EDT Tue Aug 29 2017 Upper level system moves through the area by midweek, while a a low pressure system grazes the mountains tonight and Tuesday.
417 AM CDT Tue Aug 29 2017 The cold front has moved through the area and brought drier low- level air into Oklahoma and north Texas.
Since Harvey is only drifting to the east, there could be some showers and thunderstorms along the Highway 77 corridor tonight into Wednesday as deeper moisture lingers there.
1219 AM CDT Tue Aug 29 2017 Vertically stacked low pressure system centered over northern IL/southern WI this afternoon evident on visible satellite imagery with its cloud shield extending west of MSP, with sunny skies west of a line from St. The western ridge retreats during the middle of the week and allows northwest flow to develop for the weekend.
Upper/mid level low pressure across southwest lower Michigan continues to slowly pinwheel off to the southeast at this early hour. Temperatures rather similar to those experienced yesterday, with highs largely topping out in the lower 70s. As mentioned earlier, any rain tied to that fast moving Ontario wave and its attendant cold front looks to hold off until after sunrise on Wednesday. The combination of the deteriorating upper level low nearby and a surface cold front dropping down from the north will bring more chances for showers Wednesday (mainly in the afternoon and evening hours). Highs in the lower and middle 70s.
122 AM EDT Tue Aug 29 2017 An area of low pressure is expected to track northeast near the coast through tonight. High pressure will then prevail mid week, before a front approaches the region late week. Weak low pressure will be moving to the northeast of the forecast area overnight. Tuesday: Mid-level troughing will be over the Great Lakes Region and Northeast states. The troughing will help pull a storm system located to our northeast further away from our area. Lows will range from the upper 60s across the far northwestern tier and the lower 70s further south and closer to the beaches.
228 AM MDT Tue Aug 29 2017 A 594dm high pressure center is centered over southwest Utah early this afternoon with northerly flow aloft over the area. This high pressure center will remain nearly stationary through the period. Low temperatures tonight in the low to mid 50s which is a few degrees below normal.
High temperatures will be slightly warmer than yesterday with readings in the lower 80, in western MN, to the upper 80s/low 90s along and west of Missouri Valley. These models are showing afternoon temps five degrees warmer than the current forecast. Went with the cooler models of the Canadian and ECMWF for today's high. On Wednesday, a fairly strong area of high pressure will begin sliding southward out of central Canada. This high should push a back-door cold front across the northeast portion of the CWA.
659 AM EDT Tue Aug 29 2017 An upper level trough will move across the region today.
The low clouds and fog should be gone by between 12 and 13Z this morning. A few showers and storms may affect portions of the area later today, as an ill defined trough of low pressure aloft moves across the region. Tonights lows will also be cooler than normal, with minimum readings in the lower 60s on tap. As we go through the day Wednesday the low pressure system will slowly begin to shift NEward, however the progression will be at a crawling pace.
405 AM EDT Tue Aug 29 2017 Upper low still in the vcnty currently over southern Lk Michigan and lower Michigan. With the potential for some sunshine, max temps should continue on an upward trend with readings in the low to mid 70s. Onshore flow will keep temps along Lk Superior slightly cooler in the mid to upper 60s. Southwest winds up to 25 kts could occur on Sat ahead of stronger cold front that moves through on Sat night.
Forecast area will continue under a southwest flow with a large upper level high pressure ridge over the region and an upper level trough off the West Coast.
259 AM CDT Tue Aug 29 2017 Surface ridging and light northeasterly flow has brought in drier low-level air.
158 AM EDT Tue Aug 29 2017 An upper level low will slowly rotate east across the southern Great Lakes into Tuesday night, which will continue the threat for showers and thunderstorms. The center of the upper level low is forecast to rotate slowly east across the southern Great Lakes Tuesday into Tuesday night. Precipitation threat will wane during Tuesday evening with the loss of heating and with the upper level low rotating away from the region. Lows Tuesday night will range from the upper 50s to the lower 60s.
/Today through Tonight/ A sprawling zone of high pressure stretching from Lake Superior to Kansas will move slowly eastward. Under this area of high pressure, light winds and mainly clear skies have allowed for a few pockets of fog, even dense, as the clock ticks past 3am. Farther east, forecast soundings show enough moisture to develop fair weather cumulus clouds that will mix with the sunshine as northwest flow aloft continues due to the departed upper area of low pressure moving towards the eastern Great Lakes. The high pressure will remain in control and expect another good setup for fog with light winds and mainly clear skies tonight. For low temperatures, Superblend was on the warm side and lowered temperatures anywhere from 1 to 3 degrees cooler in many places.
246 AM CDT Tue Aug 29 2017 Early morning Water Vapor loop/RAP analysis shows a closed low over Lower MI/IN with a ridge of high pressure building into the area from the Northern Plains. For today, look for that stratus to lift into flat cumulus under the inversion of incoming ridge of high pressure. High pressure moves directly overhead tonight. Will be watching a cold front drop southward through area Wednesday afternoon/evening for a chance of showers and storms. Otherwise, heating ahead of the front should push highs Wednesday well into the 70s to the lower 80s.
After another day of hot inland conditions, a slight cooling trend is forecast to spread inland Tuesday and Wednesday as high pressure briefly weakens across the region.
223 AM EDT Tue Aug 29 2017 High pressure will slowly slide south of the region Tuesday into Wednesday.
Medium Low level thermal ridging sets up ahead of southward moving cold front that works into central WI during the afternoon. An abrupt wind shift to the northeast is expected with 925 temps taking a tumble from near 20c to the low teens celsius.
308 AM EDT Tue Aug 29 2017 Low pressure along the Carolina Coast will track off to the northeast today. High pressure will ridge into the forecast area through midweek. Potential tropical cyclone ten positioned just off of the South Carolina Coast is forecast to move northeastward along the coast toward the Outer Banks today and continue pushing off to the northeast. Strong upper ridge will remain entrenched over the Four Corners region. The low will accelerate well off to the NE Wednesday. Upper and surface circulations associated with Harvey expected to move slowly near the western Gulf Coast into the Lower Mississippi Valley.
A cooling trend is underway, onshore winds will result in at least somewhat noticeably cooler temperatures over many inland areas especially in the South Bay and over much of the North Central Coast including the Santa Cruz Mountains today. High pressure develops over far northern California late this week with hotter temperatures likely returning for the Labor Day weekend.
Anomalously strong high pressure aloft is currently parked across southern Utah and will gradually shift southward into northern Arizona over the next couple of days.
636 AM EDT Tue Aug 29 2017 An upper level low will bring chances for scattered showers and isolated thunderstorms today.
224 AM MDT Tue Aug 29 2017 A 594dm high pressure center is centered over southwest Utah early this afternoon with northerly flow aloft over the area. This high pressure center will remain nearly stationary through the period. Low temperatures tonight in the low to mid 50s which is a few degrees below normal.
244 AM MDT Tue Aug 29 2017 Strong high pressure will remain over much of the western U. Enough moisture will cycle around the high to produce isolated mountain thunderstorms this afternoon and Wed. Late Wednesday afternoon a trough moving through the Pacific Northwest will begin flattening the ridge with will bring about a brief change to wetter conditions.
High pressure aloft will remain across the Great Basin today, allowing for very warm and generally dry conditions.
301 AM EDT Tue Aug 29 2017 High pressure remains over the region through Wednesday.
337 AM EDT Tue Aug 29 2017 An upper level low will bring chances for scattered showers and isolated thunderstorms today.
1105 PM MDT Mon Aug 28 2017 A broad upper ridge covers the western 2/3 of the country, with a low over the Great Lakes region. The ridge will keep weather mostly dry for the next couple days. An isolated storm or two may occur over the Hills on Tuesday, with slightly better chances over the Hills and northeastern WY on Wednesday as the ridge begins to break down.
306 AM EDT Tue Aug 29 2017 Low pressure will move NE, away from the NC coast this afternoon.
At the surface today, northeast winds will help to keep relatively drier air in place through the lower levels of the atmosphere, reinforcing a frontal boundary near the Gulf Coast.
With high pressure or surface ridging over the area through the end of the week, the only weather that looks possible is the potential for fog nearly each night.
The wedge of high pressure down the eastern seaboard is still keeping GA in stable easterly flow but this wedge is expected to weaken a bit over the next 36 hours. With the easterly flow temps will continue to be a bit on the cool side for this time of year with highs mainly in the lower to middle 80s and some 70s in the NE GA mountains.
652 AM EDT Tue Aug 29 2017 Low pressure will move NE, away from the NC coast this afternoon.
h5 heights and lightning feature a broad mid tropospheric ridge over the western half of the U. and a closed low over the Great Lakes and the stubborn. stalled h5 closed low near Houston, TX. storms were spreading across Indiana into Ohio with the closed low in that region, the tropical system along the east coast was producing heavy rain across Virginia, and heavy rain with clusters of storms plagued the Gulf Coast States. Today and Wednesday, the h5 ridge remains in place.
Recent trends show the low stratus/fog area creeping slowly westward early this morning. Upper level low pressure is exiting the area to the east, but may still support a few showers and possibly a rumble of thunder this afternoon, from Freeport to Princeton.
232 AM CDT Tue Aug 29 2017 Upper level pattern across the CONUS has an upper level ridge over the western U. At the surface, we have a large area of high pressure situated from the Great Lakes southwestward into the central plains. Last night, we had quite a bit of low stratus and dense fog across the area associated with the high pressure behind pockets of showers and storms. Northwest flow aloft and the cooler high pressure will keep us below normal for temperatures around 7 to 9 degrees below normal for this time of year with highs from the upper 70s to low 80s. GFS/ECMWF have an overall similar track, but quite a bit of timing differences with the ECMWF lifting the low to the northeast quite a bit quicker than the GFS.
233 AM PDT Tue Aug 29 2017 Hot weather will continue through the upcoming holiday weekend, but it will be cooler at the coast. Hot weather is expected to peak today as we sizzle under a strong high pressure ridge over the interior West. In the lower desert temps will approach 115. That's because the high is centered to our north allowing the clockwise flow to push the monsoon flow into our region.
The weakening upper low over lake Michigan might still be sufficient to help produce scattered showers and isolated thunderstorms across the east today. An approaching upper trough and surface cold front will bring a scattered to broken line of showers and thunderstorms Wednesday during the midday and afternoon hours.
High pressure will hold across the area into the weekend with Jose well off the coast. Weak high pressure remains in control of the region as the remains of Irma move away from the northeastern states with Hurricane Jose east of the Bahamas. Jose will be in the western Atlantic this weekend, but high pressure will be over the region.
Large scale upper trough digging into the northern Rockies and Great Basin will then lift eastward across the area on Saturday. At the surface, a strong cold front just north of our CWA this morning will blast quickly southward this afternoon and evening over the plains and into Colorado tonight. As the front crashes south this evening, showers are expected to break out once again, especially along and northwest of a Saratoga to Douglas line where the better upper dynamics will be aligned with the low level frontal zone. A quick 2 to 3 inches are likely for the highest elevations before the precip ends early Friday morning.
713 AM CDT Fri Sep 15 2017 An upper ridge will build across the area today ahead of a developing low pressure system over the plains. Overnight lows should be a few degrees warmer than last night due to increasing low-level moisture and persistent southerly flow. To the west, cyclogenesis continues just lee of the Rockies as an upper trof traverses the Rockies. As such, have trended temps with the warmer guidance, some 5 to 10 degrees above seasonal average. With sly to swly flow thru the lower levels, do not anticipate the fnt being pushed very far into the CWA as suggested by some prev mdl cycles.
653 AM CDT Fri Sep 15 2017 Southerly winds will pick up today ahead of a weak cold front.
Dew points will be slightly lower by Saturday morning, due to a slight southeastward shift in the winds but with good radiational cooling and lows in the lower 60s, patchy fog is possible. Any showers/storms will dissipate with sunset with another mostly clear night with lows in the lower to mid 60s.
Longwave trough moves across the northern Rockies through tonight, while southwest flow develops over southeast Kansas and the Missouri Ozarks. With the southerly breezes, a pretty mild night is expected with lows upper 60s to near 70 in southeast Kansas and the lower 60s in the eastern Ozarks. Southwest flow aloft will continue through the weekend as the upper trough rotates from the northern Rockies through the northern Plains and into southern Canada.
An upper ridge will bring sunny weather to Western Washington today and most of Saturday as it moves inland from the offshore waters.
1136 AM EDT Fri Sep 15 2017 Hydro High pressure will bring fair weather with warm days and cool nights into the weekend.
Isolated showers and storms today will be confined primarily to where the pool of higher moisture resides over the Lower and Middle Keys as well as the Gulf Waters. Chances today will be highest across the Gulf Waters and near and south of the Lower Keys.
The latest surface map features high pressure establishing itself across the central and southern Appalachians. Drier and warmer conditions will be on tap for eastern Kentucky into the start of the weekend, as upper level ridging builds in across the region. High pressure at the surface will remain close by or just off to our northeast, keeping our winds light through the period. Rising heights into Saturday will yield highs back in the lower 80s. In general models depict mean mid level ridging over the lower Ohio Valley through the first half of the extended.
622 AM CDT Fri Sep 15 2017 241 AM CDT Benign weather continues under an upper level ridge. JEE 241 AM CDT The ridge dominates the pattern through Saturday leading to another very warm and dry day.