Aikyam-Lab/Synoptic-Bench huggingface dataset:
High pressure is centered just to our nw. Min temps a few degrees warmer than last night. High Pressure Part 2. As the title denotes, High pressure will dominate our weather pattern for the next several days. The difference tonight from last night, will be that the 500 mb ridge will build into the Upper Great Lakes, allowing the 850 mb temperatures to rise, and, in turn, the sfc temperatures a few degrees. So the lows are expected to in the mid to upper 50s tonight, instead of the lower to mid 50s, like last night.
612 PM EDT Sat Jul 17 2021 Showers and thunderstorms will exit the region this evening with cold frontal passage. Scattered showers with an isolated thunderstorm supported by frontogenesis coincident with cold frontal passage are moving ely through the I80 corridor this evening.
Warm and dry conditions will occur across interior portions of northwest California during the next seven days, while coastal areas will experience typical periods of stratus accompanied by cooler and more humid weather.
454 PM MDT Sat Jul 17 2021 The latest water vapor satellite and associated RAP 500-mb analysis showed an upper high over NM with anticyclonic flow extending northward across the CWA. The overall upper pattern will not change appreciably for the upcoming 5-7 days as high pressure remains over the central/southern Rockies and anticyclonic flow mostly dominates over our CWA.
314 AM EDT Sun Jul 18 2021 Upper trough from the Great Lakes this morning to move to New England and deepen into the Deep South today into early week. Ridge axis continues to slowly sink southward with low level flow shifting W-SW producing overnight and morning showers in the E Gulf water moving inland then afternoon convection increasing over interior areas towards the east coast through mid week. Weak high pressure over the region to slowly sink southward today into early week with winds shifts westerly. Weak high pressure over the region will keep deep moisture and summertime thunderstorms in the area on afternoon sea breeze boundaries.
341 AM EDT Sun Jul 18 2021 Low pressure will move east across the Gulf of Maine today and tonight.
359 AM EDT Sun Jul 18 2021 A weak cold front slowly moves through the local area Sunday morning then settles near the Virginia North Carolina border late Sunday into Monday bringing chances of mainly afternoon and evening showers and thunderstorms.
300 AM EDT Sun Jul 18 2021 A cold front will slowly drop south across the region today and tonight.
Meanwhile, western portions of the forecast area will see greater influence from prominent upper level ridge, extending from the Four Corners region into the western Dakotas. This will allow for warmer/slightly more moist air west of I-29, leading to an axis of greater instability across central SD. Low level convergence and subtle warm advection continue over our far southwest counties into tonight, with potential for another subtle wave sliding south along the eastern periphery of the upper ridge to our west.
446 AM EDT Sun Jul 18 2021 A weak frontal system moves slowly across the region today and tonight, with an associated cold front passing east and south Monday. A series of cold fronts will then move across the waters during the week.
The large scale upper pattern across the United States will consist of a ridge over the Intermountain West and a downstream trough over about the northeast quarter of the country. and Monday A broad, weak anticyclone will remain across the region throughout the short-term portion of the forecast.
335 AM EDT Sun Jul 18 2021 The area will remain between Atlantic high pressure and an inland trough through late week. As of 330 AM: The forecast area will remain between high pressure centered over the western Atlantic and a broad trough over the Midlands. At H5, vorticity sourced from over the Deep South is expected to push over the CWA during this afternoon and evening as a broad H5 LW trough ripples east. PoPs will range from 55 to 75 across the CWA this afternoon and evening, greatest coverage expected over the lower Savannah River area. Tonight: Lingering instability and the passage of the broad H5 trough should support at least scattered thunderstorms through the night.
243 AM EDT Sun Jul 18 2021 A weak cold front slowly moves through the local area Sunday morning then settles near the Virginia North Carolina border late Sunday into Monday bringing chances of mainly afternoon and evening showers and thunderstorms.
Expect highs to be in the upper 80s to the lower 90s with efficient heating given the dry conditions. Monday looks to be even warmer with widespread high temperatures in the lower 90s ahead of a surface cold front that will propagate south out of Canada. Furthermore, near surface smoke behind the cold front from Canadian fires could increase across northeast Minnesota.
Chances increase somewhat during the morning as another weak impulse rounding the upper ridge looks to generate another round of storms coming from NE. Confidence in storm chances and coverage through much of Sunday is on the low side. The western US ridge amplifies with the ridge axis pushing east, resulting in a warming trend for the second half of the week.
309 AM CDT Sun Jul 18 2021 An upper level ridge of high pressure remains to the the west of the region. An upper level trough is currently moving southeast of the ridge. Ahead of the trough a few showers and storms have developed across the eastern Missouri Ozarks early this morning.
The area will still be some what on the edge of the building high pressure over the western US. While heights will still be building, there is still some weak energy that will be skirting around the high pressure and across the area. Temperatures today will be another few degrees warmer for many locations with the ridge continuing to build.
Otherwise, surface observations show temperatures across the area are in the low to mid 80s with winds decreasing into the overnight hours. As for temperatures, look for the afternoon hours to reach into the lower to mid 80s, accompanied by dew points in the 60s and possibly even lower 70s. By Monday morning, a strong high pressure ridge sets up across the central Rockies and is looking to remain in place throughout the work week.
Otw, another upper trough axis will swing southward and reinforce the unsettled weather pattern over the mid state. This secondary trough, will be accompanied by a surface boundary which will also serve as a catalyst for convection later this afternoon.
Convection is tracking along low level theta-e ridge which is oriented across southern portions of CWA.
(Today and tonight) An upper level ridge will remain over the Rockies today and tonight. Otherwise, with partly cloudy to mostly sunny skies, expect temperatures today to reach the lower to mid 90s for highs. For tonight, may have a weak disturbance move south into our area, on the eastern periphery of the ridge aloft.
These storm chances should continue to shift further west/southwest tonight and Monday, as a drier/more stable airmass associated with Canadian high pressure approaches from the northeast, with the best chances late tonight-Monday west of I-135, along eastern fringe of subtle 850-700mb warm advection and moisture transport.
203 AM EDT Sun Jul 18 2021 A weak cold front slowly moves through the local area Sunday morning then settles near the Virginia North Carolina border late Sunday into Monday bringing chances of mainly afternoon and evening showers and thunderstorms.
A similar pattern is expected Monday, with mostly dry conditions due to sfc ridging though an iso aftn shower can't be completely ruled out as the upper trough shifts slightly east, and vorticity advection briefly propagates through the Ohio Valley. ridging.
Today remains seasonable as temperatures start off the morning in the lower to mid 70s with some early morning low clouds. Temperatures should climb into the low to mid 90s but look to again fall just shy of climatological averages at the San Antonio and Austin climate locations. Any activity diminishes by sunset and will lead to another typical warm and humid summer night with overnight low temperatures in the low to mid 70s. Much of Monday will trend similar to Sunday with the temperatures rising into the low to mid 90s during the afternoon under partly cloudy skies.
Upper trough/wave will again swing in later today, pushing a frontal boundary currently to the north, down across the mid-state by late day. Overall as this front sets up well south, our mid-week will see a much reduced chance for pcpn as drier air moves in behind, and high pressure moves into the OH/TN valleys. But the chance for rain will once again ramp Fri into the weekend as another upper trough moves into the region. Otw, another upper trough axis will swing southward and reinforce the unsettled weather pattern over the mid state. This secondary trough, will be accompanied by a surface boundary which will also serve as a catalyst for convection later this afternoon.
As the ridge to our west continues to strengthen and amplify, downstream troughing over the Midwest will backdoor down the Plains, effectively shifting the forcing for this heavy rainfall and flooding to the south with time. The weekend also looks quiet with mid level ridging nearby, though there is some disagreement this model run with the new EC keeping the ridge west and bringing another system in about a week.
940 PM MDT Sat Jul 17 2021 The latest water vapor satellite and associated RAP 500-mb analysis showed an upper high over NM with anticyclonic flow extending northward across the CWA. The overall upper pattern will not change appreciably for the upcoming 5-7 days as high pressure remains over the central/southern Rockies and anticyclonic flow mostly dominates over our CWA.
The theta perturbations are somewhat impressive, with temperatures nearly 10-15 deg F cooler than surrounding areas not affected by rain/ahead of the outflow(s).
Little change in the wet pattern through the near term as the area remains under the influence of an upper level trough. The combination of the trough and deep layer moisture will maintain an active convective pattern. Slow storm motions, cell mergers, and the high PWAT airmass will all favor torrential downpours with high rainfall rates in excess of 2-3"/hr again this afternoon, and there will be potential for localized flash flooding of urban and low lying areas and along small creeks and streams each day.
Broad H5 trough remains in place over much of the East.
Large area of high pressure centered over the western Great Lakes will produce mostly clear skies, light winds, and summertime highs in the mid to upper 80s today and Monday.
436 AM EDT Sun Jul 18 2021 A weak frontal system moves slowly across the region today and tonight, with an associated cold front passing east and south Monday. A series of cold fronts will then move across the waters during the week.
247 AM MDT Sun Jul 18 2021 Current surface map places weak trof/dry line across eastern Montana into northeast Wyoming. Persistent upper level high remains across the Rockies, with large scale subsidence across the forecast area. Weak impluse over southwest Montana rides the ridge. Pattern changes little through mid-week, with amplitude of ridge/high flattening over the last half of the week.
Heading into Mon, as more sig upr trof wl be dropping sloly into the region. Sctd to numerous showers/storms wl accompany an assocd CDFNT on Mon as well, with the highest PoPs kept acrs cntrl and srn AR.
Currently, dirty mid level ridge over the region, with one noticeable wave moving over the ridge east-southeast across far southern Manitoba/far northeast North Dakota. For today, mid level ridge starts to strengthen across the region, with height rises through the day.
407 AM EDT Sun Jul 18 2021 A weak cold front slowly moves through the local area Sunday morning then settles near the Virginia North Carolina border late Sunday into Monday bringing chances of mainly afternoon and evening showers and thunderstorms.
High pressure will provide main clear skies and light winds through this time period. Low temperatures on Monday morning will range from the lower 50s to mid-60s.
414 AM EDT Sun Jul 18 2021 Low pressure will exit across southern New England today with a few lingering rain showers today.
With east winds the temperatures should be slightly cooler with highs in the upper 80s. Overall for the rest of the week the upper level ridge in the Rockies should start to move eastward and we should dry out with temperatures steadily warming through the week.
High pressure centered over the western North Atlantic is currently supporting moderate easterly breezes, with marine observation platforms currently ranging from 10 to 12 knots. Nighttime microphysics is depicting partly cloudy skies across the island chain and temperatures are currently in the lower 80s this morning.
637 AM EDT Sun Jul 18 2021 Low pressure will exit across southern New England today with a few lingering rain showers today.
Warm, sunny, and dry conditions typical of mid- summer will continue across interior portions of northwest California, while coastal conditions will be characterized by periods of marine stratus and associated cooler more humid conditions.
628 AM EDT Sun Jul 18 2021 Bermuda High pressure will maintain seasonably warm and humid weather with widely scattered showers and thunderstorms today.
There's strong agreement in the extended periods in that high pressure will remain over the central and southern Rockies and stretch toward the plains.
532 AM MDT Sun Jul 18 2021 Current surface map places weak trof/dry line across eastern Montana into northeast Wyoming. Persistent upper level high remains across the Rockies, with large scale subsidence across the forecast area. Weak impulse over southwest Montana rides the ridge. Pattern changes little through mid-week, with amplitude of ridge/high flattening over the last half of the week.
A similar pattern is expected Monday, with mostly dry conditions due to sfc ridging though an iso aftn shower can't be completely ruled out as the upper trough shifts slightly east, and vorticity advection briefly propagates through the Ohio Valley. ridging. Bkn IFR-MVFR cigs will erode quickly this morning as dry air advects swd in the wake of a cold front.
651 AM EDT Sun Jul 18 2021 A weak cold front slowly moves through the local area Sunday morning then settles near the Virginia North Carolina border late Sunday into Monday bringing chances of mainly afternoon and evening showers and thunderstorms.
An east-west upper trof axis over the Ohio River valley will drop south tonight, with a minor surface pressure trof passage resulting in a shift to northeast winds toward morning. Rain and thunder coverage should expand north with daytime heating on Monday, with the midlevel trof axis roughly oriented along the I-40 corridor by early afternoon. Over the past few days, model solutions with this upper trof have trended slightly stronger and further west, producing more an impact on Midsouth rain chances and daytime temperatures.
/issued 314 AM EDT Sun Jul 18 2021/ Upper trough from the Great Lakes this morning to move to New England and deepen into the Deep South today into early week. Ridge axis continues to slowly sink southward with low level flow shifting W-SW producing overnight and morning showers in the E Gulf water moving inland then afternoon convection increasing over interior areas towards the east coast through mid week. Weak high pressure over the region to slowly sink southward today into early week with winds shifts westerly. Weak high pressure over the region will keep deep moisture and summertime thunderstorms in the area on afternoon sea breeze boundaries.
Could see a few showers/storms around the Victoria Crossroads in the afternoon though as upper level troughing digs into the area.
It will remain hot and muggy with highs climbing into the lower to mid 90s prior to the onset of convection with heat indices in the upper 90s to around 100.
An upper low continues to be present over the Great Lakes. At the surface, ridging continues to break down over AL as the Atlantic ridge pushes E and a front attempts to sink SWD across the central part of E Conus.
417 AM CDT Sun Jul 18 2021 (Issued 420 AM CDT Sun Jul 18 2021) Today through Monday: Another quiet day expected today as the upper level trough pushes southeast of the area with large scale ridging filling in. High pressure will also build in at the surface over northern Wisconsin. Broad ridging in the upper levels will continue with dry midlevels keeping the region dry given the lack of both forcing and moisture.
1000 AM EDT Sun Jul 18 2021 A weak cold front slowly moves through the local area Sunday morning then settles near the Virginia North Carolina border late Sunday into Monday bringing chances of mainly afternoon and evening showers and thunderstorms.
Meanwhile, expanding our field of vision, a sprawling subtropical high pressure extends from the central Atlantic, westward across the Sunshine State and into the Gulf of Mexico.
514 AM MDT Sun Jul 18 2021 High pressure located over the Four Corners region for the past several days will drift westward this morning and afternoon. This wind shift on the eastern side of the high will usher in slightly drier air from the north resulting in notably less convective precipitation over western Colorado today. Triple-digit heat will be common in the lower valleys and canyons from Grand Junction west through Moab and Canyonlands. Overnight, a weak impulse rotating around the high pressure system will sustain scattered showers in the Four Corners region. The meandering high pressure system will drift slightly north and eastward on Monday. As this transition occurs, a deeper plume of monsoonal moisture will become entrained underneath the ridge sitting overhead.
An upper ridge will be located across the interior West this week with an upper trough offshore.
Upper trough/wave will again swing in later today, pushing a frontal boundary currently to the north, down across the mid-state by late day. Overall as this front sets up well south, our mid-week will see a much reduced chance for pcpn as drier air moves in behind, and high pressure moves into the OH/TN valleys. But the chance for rain will once again ramp Fri into the weekend as another upper trough moves into the region. Another upper trough axis will swing southward and reinforce the unsettled weather pattern over the mid state. This secondary trough, will be accompanied by a surface boundary which will also serve as a catalyst for convection later this afternoon.
355 AM MDT Sun Jul 18 2021 Hot & dry conditions will persist today beneath strong upper-level ridging characterized by H5 heights in excess of 595 dam. The main ridge axis should remain to the south and west of the CWA, helping promote at least isolated shower & thunderstorm potential w/ quite a few disturbances traversing the flow aloft. Maintained slight chance PoPs across the higher terrain, but kept things dry elsewhere.
Given the highly saturated soils and the potential for clearing skies tonight, there is a non zero chance for lowered visibilities to develop across NW AR. As the ridge to our west continues to strengthen and amplify, downstream troughing over the Midwest will backdoor down the Plains, effectively shifting the forcing for this heavy rainfall and flooding to the south with time. The weekend also looks quiet with mid level ridging nearby, though there is some disagreement this model run with the new EC keeping the ridge west and bringing another system in about a week.
504 AM EDT Sun Jul 18 2021 A poorly defined cold front is dropping south through the forecast area early this morning. The axis of the supporting upper trough will also shift very slowly southeast, and not reach eastern KY until late Monday. Upper level jet impulses on the downstream side of the trough will provide some modest periodic support for precip. A cold front was slowly dropping south through the JKL forecast area at the start of the period.
As surface ridging becomes more established tonight, a clearing sky and light wind should allow for fog development, perhaps locally dense in some valley locations. A similar pattern is expected Monday, with mostly dry conditions due to sfc ridging though an iso aftn shower can't be completely ruled out as the upper trough shifts slightly east, and vorticity advection briefly propagates through the Ohio Valley. ridging.
(Issued 420 AM CDT Sun Jul 18 2021) Today through Monday: Another quiet day expected today as the upper level trough pushes southeast of the area with large scale ridging filling in. High pressure will also build in at the surface over northern Wisconsin. Broad ridging in the upper levels will continue with dry midlevels keeping the region dry given the lack of both forcing and moisture.
Currently a distinct mid level perturbation is rounding the main H500 high pressure moving south across the Black Hills region.
641 AM EDT Sun Jul 18 2021 High pressure centered over the western Great Lakes will influence the Se Mi terminals through the TAF period. Large area of high pressure centered over the western Great Lakes will produce mostly clear skies, light winds, and summertime highs in the mid to upper 80s today and Monday.
743 AM EDT Sun Jul 18 2021 A weak frontal system moves slowly across the region today and tonight, with an associated cold front passing east and south Monday. A series of cold fronts will then move across the waters during the week.
1040 AM EDT Sun Jul 18 2021 Low pressure will move east across the Gulf of Maine today and tonight.
617 AM EDT Sun Jul 18 2021 Low pressure will move east across the Gulf of Maine today and tonight.
Upper high will shift north over the Rockies today with low pressure wave moving north into SoCal, which will advect mid-level moisture into Central California through the day with PWAT values pushing towards 1. 25 inches tonight and Monday morning, as low pressure wave moves north. Main change in the forecast is slightly deeper and farther east portion of trough approaching the West coast from the eastern Pacific. Subsidence and drying behind low pressure wave Monday afternoon should further decrease activity, but lingering storms over the mountains are possible.
1048 AM EDT Sun Jul 18 2021 As an Atlantic ridge continues extending westward towards the FL peninsula today, surface winds will remain from the southeast.
356 AM MDT Sun Jul 18 2021 Today, the strong ridge of high pressure aloft is beginning now to move northward and spread more over the northern Rockies and the adjacent northern high plains.
1004 AM EDT Sun Jul 18 2021 Bermuda High pressure will maintain seasonably warm and humid weather with widely scattered showers and thunderstorms today.
352 AM MDT Sun Jul 18 2021 An upper level high will continue to strengthen over the area today.
603 AM CDT Sun Jul 18 2021 (Today and tonight) An upper level ridge will remain over the Rockies today and tonight. Otherwise, with partly cloudy to mostly sunny skies, expect temperatures today to reach the lower to mid 90s for highs. For tonight, may have a weak disturbance move south into our area, on the eastern periphery of the ridge aloft.
522 AM MDT Sun Jul 18 2021 High pressure located over the Four Corners region for the past several days will drift westward this morning and afternoon. This wind shift on the eastern side of the high will usher in slightly drier air from the north resulting in notably less convective precipitation over western Colorado today. Triple-digit heat will be common in the lower valleys and canyons from Grand Junction west through Moab and Canyonlands. Overnight, a weak impulse rotating around the high pressure system will sustain scattered showers in the Four Corners region. The meandering high pressure system will drift slightly north and eastward on Monday. As this transition occurs, a deeper plume of monsoonal moisture will become entrained underneath the ridge sitting overhead.