Aikyam-Lab/Synoptic-Bench huggingface dataset:
619 AM EDT Fri May 26 2023 Strong high pressure builds in through the first part of the weekend in continued dry conditions with a gradual warming trend. High pressure located near the Great Lakes region will stay in control of our weather pattern today through tomorrow. This high pressure system will keep the weather quiet and sunny along with pleasant temperatures. Temperatures on Saturday will be warmer, climbing into the middle and upper 70s.
630 AM CDT Fri May 26 2023 (Today through Saturday) A weak upper level ridge axis will remain in place just to the west of the region today, placing the region in northwest flow aloft.
The split flow regime to the east of the area is keeping a ridge of high pressure in place over the Great Lakes region, with an upstream trough over the intermountain west. At the surface a ridge in place has caused a dry airmass, fed by dry easterly winds to remain in place over the area, which will keep relatively dry-feeling air in place for the next couple days. Temperatures will still climb into the upper 70s for the next couple days, and eventually get into the 80s for Memorial Day Weekend, but this dominant ridge of high pressure will keep the bulk of any precipitation well off to the west. High pressure will keep weather conditions mild this afternoon.
The trough located over the West Coast will continue to funnel in drier air and increased afternoon wind speeds. Aside from winds, temperatures will stay consistent day-to-day, with a trough remaining to our west. Overnight lows will continue to reach down into the 30s and 40s for many areas across the High Country, and daytime highs in the 70s and 80s for much of northern Arizona. Another trough pattern will become situated along the West Coast, so our weather will remain very similar each day.
649 AM EDT Fri May 26 2023 High pressure will be centered over the Great Lakes region through the Memorial Day weekend.
1047 AM EDT Fri May 26 2023 A warming trend continues today into the upcoming holiday weekend as high pressure at all levels builds across the region.
Canadian high pressure will build southeast into PA today, ensuring a continuation of fair weather. Despite nearly full sunshine, GEFS 2m temp anomalies suggest highs will fall a couple of degrees short of late May averages, with highs ranging from the mid 60s over the highest ridges of the Alleghenies, to the low 70s in the valleys of central and southern PA. High pressure will remain over the area Saturday, but its airmass will moderate under strong late May sunshine.
* Seasonable temperatures today * Increased fire risk with dry conditions and some wind gusts continues Strong high pressure centered over the Great Lakes continues to bring dry air and deep subsidence across the region early this morning courtesy of northeast flow. The quiet and dry weather pattern of late will continue for today and tonight as the aforementioned high pressure remains anchored over the Great Lakes. This will keep a persistent dry and cooler northeast wind across the region through tonight. a slug of moisture will push west off the Cumberland Plateau this afternoon into the Tennessee valley in the vicinity of a weak upper low.
Water vapor imagery highlights a plethora of activity across the northern Bahamas, which is on the eastern side of a mid to upper level trough. Meanwhile, activity is much more muted on the western side of the trough in the Gulf of Mexico. The trough axis is aligned over our area, so we are still in a transitional zone. Marine observation platforms along the Reef range from 5 to 12 knots, with the higher values likely being outflow from the activity in the Straits.
621 AM CDT Fri May 26 2023 (Today through Saturday) Water vapor imagery this morning reveals an upper level ridge attempting to build in from the west as a trough peels across the southeast. Ridging will shift over the area through the day. Once again, convection will be possible across the higher terrain of Mexico. More of the same is expected on Saturday as ridging remains in control for one more day.
622 AM EDT Fri May 26 2023 An inverted trough sits over WV while high pressure sits over the Great Lakes through Friday. A developing upper low makes for a tricky holiday weekend forecast, with an increasing chance for rain.
615 AM CDT Fri May 26 2023 Much like we've seen so far this week, our forecast area will continue to remain sandwiched in between high pressure at the sfc and aloft across Great Lakes and an elongated area of low pressure/frontal zone across the Northern High Plains and Rockies through most of this period. The upper level trough, that's been in place across the western CONUS this week, will begin to exert a bit more influence on our local pattern with time through this period as the aforementioned high pressure drifts slightly eastward. We start the period with an upper ridge centered over the Great Lakes.
628 AM CDT Fri May 26 2023 (Today through Saturday) The axis of 500 mb high pressure will ease from the Texas Big Bend to central Texas during the period, placing the BRO CWFA in a dry northwest to southeast mid-level flow.
555 AM CDT Fri May 26 2023 (Today) Another seasonable day is in store across the region this afternoon as surface ridging slowly builds into the region throughout the day.
For the Memorial Day weekend, a new upper trough is forecast to slide southward along the west coast and replaced the existing trough over the region.
At this juncture the only activity we are following will be overnight tonight as an H5 trof begins to amplify over or just slightly east of us. The current weak upper low over the FL panhandle will move little over the weekend while the base of the upper trough extending from the NE over to Illinois will begin to close off into a new upper low and sink toward the upper low that will find itself over GA/AL. This will simply reinforce the upper low as they merge over the weekend.
These values are generally +3-6F warmer than yesterday, but still a few to several degrees below late May climo. Previous Discussion Issued: 531 AM EDT Fri May 26 2023 Canadian high pressure will build southeast into PA today, ensuring a continuation of fair weather. Despite nearly full sunshine, GEFS 2m temp anomalies suggest highs will fall a couple of degrees short of late May averages, with highs ranging from the mid 60s over the highest ridges of the Alleghenies, to the low 70s in the valleys of central and southern PA. High pressure will remain over the area Saturday, but its airmass will moderate under strong late May sunshine.
615 AM CDT Fri May 26 2023 (Today and tonight) The "dirty" ridge remains over eastern New Mexico and west Texas this morning. Highs will continue to be near or just slightly below normal, getting into the low to mid 80s at most locations.
644 AM CDT Fri May 26 2023 (Today and tonight) A mid-level ridge will persist from southwest Texas into the western Great Lakes through sunrise Saturday.
620 AM CDT Fri May 26 2023 (Today through Saturday Night) Through the short term period, mid/upper level ridging looks to remain in place while slightly drier air (precipitable water values around one inch) tries to edge into the area from the northeast.
948 AM EDT Fri May 26 2023 High pressure builds into the region today providing for fair weather but still somewhat cool high temperatures.
630 AM CDT Fri May 26 2023 Showers and isolated storms continue to fester over the High Plains early this morning. A persistent mid/upper ridge over the Upper Mississippi Valley area will help steer drier air into the Central Plains today which should keep much of the shower and storm activity confined to central and western Kansas.
704 AM EDT Fri May 26 2023 Marine - Dry pattern to continue into Saturday The strong high pressure system over northern Lower Michigan remains in place through Saturday.
929 AM EDT Fri May 26 2023 Strong high pressure builds in through the first part of the weekend in continued dry conditions with a gradual warming trend. High pressure located near the Great Lakes region will stay in control of our weather pattern today through tomorrow. This high pressure system will keep the weather quiet and sunny along with pleasant temperatures. Temperatures on Saturday will be warmer, climbing into the middle and upper 70s.
Today will be similar, if not a repeat of yesterday with breezes picking up across the lower deserts in the afternoon to early evening timeframe. We are expecting another bout of gusty winds across the Imperial Valley tonight as the mid level height gradient tightens in response to troughing over the Intermountain West.
1049 AM EDT Fri May 26 2023 High pressure will be centered over the Great Lakes region through the Memorial Day weekend.
518 AM CDT Fri May 26 2023 (Today through Saturday Night ) A weak cold front will drop SW through the state through this afternoon. with some drier air filtering into the state from the NE as an upper trough deepens as it moves south into NERN AR. with maybe a deg or two cooler than Thu. Lows will drop into the low 50s to around 60. with maybe some increased clouds near this upper low. Lows Sat night will be in the low 50s to low 60s.
High pressure and a dry atmosphere will provide plentiful sunshine today along with warmer temperatures. * Seasonable temperatures today * Increased fire risk with dry conditions and some wind gusts continues Strong high pressure centered over the Great Lakes continues to bring dry air and deep subsidence across the region early this morning courtesy of northeast flow. The quiet and dry weather pattern of late will continue for today and tonight as the aforementioned high pressure remains anchored over the Great Lakes. This will keep a persistent dry and cooler northeast wind across the region through tonight. a slug of moisture will push west off the Cumberland Plateau this afternoon into the Tennessee valley in the vicinity of a weak upper low.
Upper level trofiness will remain the driving factor in our weather for the remainder of May.
A mid/upper level trough persists over the state this morning with stratus filling in over much of the Bay Area and Central Coast. This is likely due to a slight inland shift of the trough axis and weaker moist upslope flow this morning.
732 AM EDT Fri May 26 2023 Aviation - Dry pattern to continue into Saturday The strong high pressure system over northern Lower Michigan remains in place through Saturday.
555 AM CDT Fri May 26 2023 A rex block will trap an upper low over the lower Mississippi valley. Moisture wraps around the low in a SW/NE corridor across northern Mississippi.
726 AM EDT Fri May 26 2023 A warming trend continues today into the upcoming holiday weekend as high pressure at all levels builds across the region.
Temperatures will be in the upper 80s to mid 90s across the lowlands. Upper level low will remain to our west-northwest through much of the period in addition to nightly moisture pushes from the east.
/JNE/ A rex block will trap an upper low over the lower Mississippi valley. Moisture wraps around the low in a SW/NE corridor across northern Mississippi.
Trough energy lingers over the region today and Saturday. Light steering winds of generally 10 knots or less will increase the risk of ponding of water or potentially even minor areal flooding if training of storms over the same area occurs, mainly to areas north of the Highway 50 corridor.
Pattern Synopsis: A closed upper-level low will continue to pivot over the north Atlantic off of the New England coast tonight as amplified ridging slides eastward, positioning itself overhead by Saturday morning. Forecast/Details: Quiet weather will continue across northern Michigan through tonight with aforementioned high pressure in place. Low temperatures tonight will dip below 40 across most areas, with interior low-lying areas dropping near freezing late tonight/early Saturday morning. Pattern Synopsis/Forecast Details: Broad ridging will remain over the region through the period as a cut-off low pinwheels over the southeast CONUS, keeping quiet weather in place across the Great Lakes through the holiday weekend.
150 PM EDT Fri May 26 2023 High pressure remains in control through early Saturday.
A pattern change will bring much warmer than normal temperatures along with slowly increasing humidity levels.
1128 AM CDT Fri May 26 2023 (Today and tonight) A mid-level ridge will persist from southwest Texas into the western Great Lakes through sunrise Saturday.
1223 PM CDT Fri May 26 2023 (Today through Saturday Night ) A weak cold front will drop SW through the state through this afternoon. with some drier air filtering into the state from the NE as an upper trough deepens as it moves south into NERN AR. with maybe a deg or two cooler than Thu. Lows will drop into the low 50s to around 60. with maybe some increased clouds near this upper low. Lows Sat night will be in the low 50s to low 60s.
Cooler than normal low temperatures with near normal high temperatures the next couple of days.
(This afternoon through Saturday) An upper-level low will rotate southeastward across the Lower MS Valley while a broad region of high surface pressure moves eastward across the Great Lakes and Ohio valley regions. For the most part, expect mostly sunny skies and nice weather conditions heading into the Memorial Day weekend, trending slightly cooler tomorrow with lower humidity due to east-northeasterly sfc winds.
227 PM CDT Fri May 26 2023 High pressure centered over the Great Lakes Region is pushing relatively cool and much drier air into the Mid Mississippi Valley on northeast flow.
(This afternoon through Saturday night) Upper ridge extends from Mexico across SE NM and W TX to MN as a trough extends from WA down the West Coast. This trough will slowly grow east Saturday cutting the ridge in half separating the portion over the south plains from that over the Great Lakes.
Upper ridge parked over MN and WI will slowly drift eastward tonight into the start of the weekend. Little will change with the surface pattern, with high pressure to our east and troughing to our west bringing a fairly tight gradient. Cluster analysis presents generally good agreement in the timing (and location) of a longwave trough propagating across the Northern Plains in the early part of the period.
Much like we've seen so far this week, our forecast area will continue to remain sandwiched in between high pressure at the sfc and aloft across Great Lakes and an elongated area of low pressure/frontal zone across the Northern High Plains and Rockies through most of this period. The upper level trough, that's been in place across the western CONUS this week, will begin to exert a bit more influence on our local pattern with time through this period as the aforementioned high pressure drifts slightly eastward. We start the period with an upper ridge centered over the Great Lakes.
Skies are clear across the region, although a few CI are advecting southwestward across northern lower around the ridge the north. The northern part of the upper ridge is progd to flatten a bit Saturday as a trough over the Tennessee valley becomes a bit more active. Temperatures will warm a bit as the upper ridge flattens.
An upper level trough is over the western portion of the country with upper ridging extending from Texas up to the Great Lakes region. Showers and thunderstorms are developing across western and central portions of Nebraska and Kansas where an upper disturbance is moving overhead on the leading edge of the upper trough. A Flood Warning has been issued for the Republican River at Cambridge beginning tomorrow evening due to heavy rain upstream. The trough to the west will expand eastward on Saturday, but rain chances will be low with the best chances across western portions of the area.
239 PM CDT Fri May 26 2023 Moisture from the Gulf continues to circulate northward on the backside of high pressure into the western High Plains.
1214 PM CDT Fri May 26 2023 (Today through Saturday) A weak upper level ridge axis will remain in place just to the west of the region today, placing the region in northwest flow aloft.
121 PM EDT Fri May 26 2023 Strong high pressure positioned over Michigan will build over the region through the first part of the weekend in continued dry conditions with a gradual warming trend. High pressure located near the Great Lakes region will stay in control of our weather pattern today through tomorrow. This high pressure system will keep the weather quiet and sunny along with pleasant temperatures. Temperatures on Saturday will be warmer, climbing into the middle and upper 70s.
The dry pattern favors trending minimum temps below MOS/NBM blend with lows bottoming around the freezing mark in the typically coldest locations. High pressure will remain over the area Saturday providing a nice start to the holiday weekend. Max temps will trend warmer under strong late May sunshine with highs climbing back into the 70s.
Although broken high cloudiness on Saturday afternoon with some late afternoon CU inbetween the breaks, should see temperatures warm again to near seasonably average for late May afternoons, with highs in the lower to mid-80s.
Still expecting east winds to keep lakeshore highs slightly cooler today, but overall, it'll be a beautiful day with mostly sunny skies, light east winds, and seasonal temperatures. CMiller (Issued 335 AM CDT Fri May 26 2023) Today through Saturday: Rex blocking pattern will linger over the region during this period, which will help strong high pressure to remain over the region as well. Highs should reach the middle 70s inland today and upper 70s on Saturday, with cooler readings near Lake Michigan.
The current weak ridging in place over the region is progged to wear down by Saturday afternoon as a s/w trough ejects out of NM. High temps shouldn't stray too far from today's cooler highs given increased clouds and moist SSE winds.
Heading into the evening and overnight hours, expect these conditions to continue with temperatures expected to peak in the low to upper 80s. Temperatures should gradually cool down after sunset tonight with overnight lows expected to be in the low to upper 50s across the area.
122 PM CDT Fri May 26 2023 (Today through Saturday) The axis of 500 mb high pressure will ease from the Texas Big Bend to central Texas during the period, placing the BRO CWFA in a dry northwest to southeast mid-level flow.
Water vapor satellite loops today show the low pressure center to the west slowly moving southward through Washington. The low pressure system is forecast to move into southeastern Idaho on Saturday and widespread showers and thunderstorms are forecast for Saturday afternoon in north-central Idaho and western Montana.
1145 AM MDT Fri May 26 2023 Another day of showers and thunderstorms is expected today as the West Coast low and blocking high to our east remain in place. Saturday will see additional widespread showers and thunderstorms, though a slightly eastward trough shift will likely limit the strongest activity to Johnson and Natrona counties.
434 PM EDT Fri May 26 2023 High pressure will be centered over the Great Lakes region through the Memorial Day weekend.
Currently, MLCape values are are around 500-1000J/KG just ahead of the aforementioned cold front (north central ND) and back south southwest through western ND and into northwest SD. There are some strong low level lapse rates over much of western and central ND, especially just ahead of the cold front (there is also an area of congested CU development over the far south central attim) Mid level lapse rates are pretty meager however, and based on the EMC RAP analysis, are not forecast to increase much over western and central ND this afternoon/evening. Thus it seems like the best chances for severe weather later this afternoon/this evening would be right along/ahead of the cold front from north central into west central ND.
Trough axis over northern and central Nevada will continue to supply moisture to the region and allow for afternoon showers and thunderstorms.
(Through Saturday) The upper level trough continues to influence our weather.
For the rest of today, expect showers and thunderstorms to continue developing, though the limiting factor will continue to be the drier air wrapping around the low.
Near to slightly below normal temperatures will continue today as we have troughing over the region.
Trough axis currently situated over Nevada this afternoon allowing for isolated to scattered showers and thunderstorms over portions of Inyo, Esmeralda, and central Nye Counties. Most of the convection is expected to remain over the higher terrain, but any generated outflow boundaries could allow for some storm development in the lower elevations. The trough will begin to lift overnight and Saturday bringing a reduction to the instability across the northern zones.
A frost advisory is posted for the Western Twin Tiers where the dew points are mixing out the lowest. There is patchy frost possible in the Susquehanna river valley up into the Catskills but the coverage of the cooler temperatures is much lower. Late tonight into tomorrow, stronger upper level ridging builds in so temperatures warm to almost 10 degrees warmer than what todays highs will be with less dry air mixing to the surface. Overnight lows will be much warmer tomorrow night compared to today with no chance of frost. NBM temperature guidance may still have a tendency to be on the cool side in this dry airmass, thus am sticking close to previous forecast that was adjusted warmer.
An upper low developing over the southeast states will meander around the Mid-South through this weekend. Mainly dry and warmer weather is expected through mid-week as upper level highs pressure builds over the region.
100 PM EDT Fri May 26 2023 High pressure will be centered over the Great Lakes region through the Memorial Day weekend.
1211 PM CDT Fri May 26 2023 (Today through Saturday Night) Through the short term period, mid/upper level ridging looks to remain in place while slightly drier air (precipitable water values around one inch) tries to edge into the area from the northeast.
330 PM EDT Fri May 26 2023 High pressure will build in from the west tonight, then settle to our south through the weekend.
221 PM MDT Fri May 26 2023 Upper trough remains anchored over the western CONUS with southwesterly flow ahead of it over the plains.
With the airmass moderating a bit, low temperatures will be a little warmer than the previous night, but lows will still be in the mid 40s to lower 50s. The upper low across the southeastern USA will drift closer to the area, allowing an increase in mainly high clouds.
304 PM EDT Fri May 26 2023 High pressure centered over the Great Lakes will provide tranquil weather through Saturday.
Satellite imagery early this afternoon depicts clear skies across the Desert Southwest due to the influence of dry W-SW flow from a trough lifting north across the Great Basin. Temperatures across the region will be a few degrees cooler relative to earlier in the week today and tomorrow due to the trough impinging on the region. Winds gusting 20-25 mph will be common across the lower deserts this afternoon and evening as stronger winds aloft mix to the surface.
Upper level low becomes cutoff across the Tennessee Valley and Southern Appalachians. Increasing clouds expected through the day as low pressure along the Carolina coast moves inland. An upper level low currently observed across western Kentucky and southern Illinois is forecast to drift southeast tonight and tomorrow before merging with an upper low currently across southeast Georgia. This will deepen and further cutoff this phased upper low across the Tennessee Valley and Southern Appalachians. The exception may be across the mountains along the TN/NC state line where increasing clouds, fog, and some rain will be possible across the higher terrain.
The region will remain between an upper level ridge to the east and a trough to the west through the period. At the surface, the pattern will generally be the same as the upper level pattern, with high pressure over the Great Lakes, and an elongated area of low pressure over the Rockies. A weak trough to the west and a ridge/upper high to the east means this blocking pattern should persist for the next several days.