Aikyam-Lab/Synoptic-Bench huggingface dataset:
105 PM EDT Fri Apr 26 2024 High pressure will dominate the eastern United States through the weekend. Water vapor imagery this morning depicts mid-level ridging over the deep south/Midwest and wnwly flow over central NC. Given the cooler nely flow, highs should max out in the mid 60s to lower 70s this afternoon. OVernight lows will dip into the lower to mid 50s. As the upper level ridge persists across the Mid-Atlantic region, dry weather is expected to continue over the short term period. At the surface, high pressure off the north Mid-Atlantic coast Saturday morning will continue to influence easterly winds on Saturday.
1033 AM PDT Fri Apr 26 2024 Light rain showers are possible today as a weak cold front moves through the region. (Today and tonight) An upper trough will progress from the Pacific Northwest through the Great Basin and and Desert Southwest through this evening. The upper feature will escort a weakening cold front through the Bay Area and Central Coast today with drizzle and/or light rain showers accompanying its passage through this afternoon. Temperatures will be seasonally cool with highs mostly in the lower to mid 60s. Lows tonight will be a bit cooler following the frontal passage with temperatures mostly in the 40-45 degree range except near 50 along the immediate coast and within the urban areas.
1218 PM CDT Fri Apr 26 2024 Warm, breezy and humid conditions will spread into the Midsouth today, behind a warm frontal passage.
303 PM EDT Fri Apr 26 2024 High pressure allowed temperatures to return to near normal today.
MM/25 (Now through Saturday) Dry weather conditions prevail as upper ridging remains situated across the southeastern U. A passing trough to the north will likely result in increased cloud cover across the forecast area Saturday which may limit daytime heating to some extent. Regardless, expecting temperatures to still rise into the lower 80's for most spots Saturday after reaching lower to middle 80's this afternoon.
(This evening through Saturday) Tonight, a short-lived mid-level zonal regime will situate over the Southern Plains ahead of a trough in the Desert Southwest. By tomorrow morning, a convergence boundary will form as a result of the low-level jet allowing the possibility of a few storms in the eastern half of our CWA. As the day continues, the trough will enter the Panhandle region with the maximized jet in our area around 0z.
Yet another dry day expected for the island communities, with temperatures reaching the lower to mid 80s, and breezy conditions emerging by this evening. From synopsis, gentle to moderate breezes will prevail in the near term as an Atlantic ridge extends westward across Florida. This high will be subsumed by a larger high spreading into the western North Atlantic over the next couple of days.
1253 PM CDT Fri Apr 26 2024 (Today through Saturday night) The axis of yesterday's trough is lifting over and out of the area this morning, leaving the Panhandles warm and dry. Main focus for the short term resides in Saturday, when a potent closed low near the Four Corners region provides stronger winds across the CWA, and perhaps some storms near the TX-OK border.
(This afternoon through Saturday) Warm conditions are expected across Central Alabama through the short term period as a large ridge builds across the eastern CONUS. Southerly flow has developed, and this will usher in a warmer airmass with highs in the mid 80s and overnight lows in the low/mid 60s. A remnant warm front is lifting across northeast Alabama in response to an ejecting low- pressure system over the Central Plains. Conditions will be rain-free tomorrow as the ridge dominates, but there will be some high-level clouds passing across the region and more fair weather cu during the afternoon.
259 PM EDT Fri Apr 26 2024 High pressure will move off of the eastern seaboard by this evening. A warm front will drift northeast across the Commonwealth Saturday but moisture associated with it will be limited and showers occurring along and ahead of this boundary will be relatively light.
Breezy conditions, especially over the higher terrain and adjacent foothills into tomorrow. On the subject of winds, expect sub-advisory gusts to persist over the higher terrain and some adjacent foothills.
Cloud tops mainly maintaining temperatures with the deep trough through the Great Plains and also to the west through the Great Basin region. Anything of more significance in terms of stronger storms are really low at this time with the cooler air entranced through the entire CWA.
An upper-level ridge extending from the Gulf of Mexico northward towards the Great Lakes is evident. This stagnant feature is sandwiched between an upper-level trough in the western North Atlantic and another, quite deep trough over the Midwest, which has produced several days worth of severe weather in that region. Closer to home, the aforementioned ridge continues to deflect any organized shower activity. At the surface, high pressure continues to strengthen over the Northeast as it slowly slides offshore into the western North Atlantic. Temperatures are generally in the lower to mid 80s at the island communities. This high will dive southeastward over the next couple of days, before becoming quasistationary south of Bermuda.
A upper level wave and associated surface cold front will continue to move eastward across Kansas this afternoon. Current satellite imagery was showing agitated cumulus in the deeper moisture east of the Kansas Turnpike in response to the approaching wave/cold front. The deeper and more amplified trough pattern is continuing to hold thus as the severe event goes on, expect flooding to begin to play a bigger role in event.
1258 PM CDT Fri Apr 26 2024 (Today and tonight) The Pacific front is expected to push the dryline east out of the forecast area this morning as the upper low ejects northeastward today. At the same time, the next upper low will be near the Four Corners region of the US with the jet approaching West Texas.
A trough digging across the western U. With the main energy in this trough passing to the southwest of our area and cutting off, most of the cooler air and moisture will affect Lemhi County Idaho and southwest Montana. This current weather system is the first wave in a cooler than average weather pattern that will persist for at least a week.
Expect stronger winds than yesterday specifically for higher peaks and along the Big Sur Coast from pressure gradient change as the current trough pattern pushes east.
As the low pressure system over the central Plains strengthens and propagates northeastward, pressure gradients will tighten over the Ohio Valley. The warm front associated with this system will sweep through the region in the overnight hours, shifting winds to a southerly direction and allowing weak moisture advection. Low temperatures will be in the low-mid 60s. The low pressure system will quickly move over the Great Lakes region, pulling most of the precipitation to the north of the region.
Further upstream, a second upper trough axis extends from the Pacific NW into the desert SW. A heavier band of rain extends from northern SD into south-central SD along the northwestern periphery of the low.
1120 AM EDT Fri Apr 26 2024 Ridge of high pressure will be over the coastal areas today as a weak front will be moving west of the area leading to a slight chance of showers in the northern CSRA and western Midlands.
The ridge axis will continue to slowly shift east across the forecast area tonight as we start to see an increase in southerly flow. Heading into tomorrow, weather conditions will be quiet as the upper-ridge continues to dominant our forecast.
121 PM EDT Fri Apr 26 2024 High pressure will dominate the eastern United States through the weekend. Water vapor imagery this morning depicts mid-level ridging over the deep south/Midwest and wnwly flow over central NC. Given the cooler nely flow, highs should max out in the mid 60s to lower 70s this afternoon. OVernight lows will dip into the lower to mid 50s. As the upper level ridge persists across the Mid-Atlantic region, dry weather is expected to continue over the short term period. At the surface, high pressure off the north Mid-Atlantic coast Saturday morning will continue to influence easterly winds on Saturday.
336 PM EDT Fri Apr 26 2024 High pressure will dominate the eastern United States through the weekend. Light enely flow continues this afternoon as high pressure extends down into our area. Further southwest, a warm front draped across the TN valley continues to generate clouds and light rain mostly over the southern Appalachians. Overnight lows will dip into the lower to mid 50s. As the upper level ridge persists across the Mid-Atlantic region, dry weather is expected to continue over the short term period. At the surface, high pressure off the north Mid-Atlantic coast Saturday morning will continue to influence easterly winds on Saturday.
(This evening through Saturday night) Gusty winds reside across the region this afternoon as a strong onshore flow has developed between a low (or what will be a series of lows across the plains this weekend) and high pressure over the western portions of the Atlantic. This will keep pushing warmer and more moist flow across the region. A cold front should stall upstream as the front begins to become parallel to the mean flow.
104 PM EDT Fri Apr 26 2024 High pressure remains in control today with calm and dry conditions expected.
213 PM EDT Fri Apr 26 2024 - Much warmer temperatures this weekend with highs around 80.
139 PM EDT Fri Apr 26 2024 High pressure will shift to the east coast with a warm front lifting north through the area tonight. Precipitation chances will develop this afternoon, and increase tonight as the warm front moves through the region.
215 PM EDT Fri Apr 26 2024 A wedge of high pressure will keep clouds and occasional rain showers or drizzle in the area through Saturday. High pressure continues to wedge south along the eastern side of the Appalachians. Some light rain and drizzle may develop overnight, and perhaps some areas of fog in the North Carolina mountains and along the southern Blue Ridge in Virginia. High pressure moves into a less favorable position, therefore expecting a quicker erosion of the low stratus deck. Should see temperatures a few degrees warmer tomorrow in response to the weaker easterly flow and quicker cloud erosion.
Morning lows to start the day Saturday will remain about 10 degrees above normal for this time of year, bottoming out in the middle/upper 60s (compared to normal lows in the lower/middle 50s for late April).
Rain will slowly shift west and dissipate through the rest of today and tonight as the upslope flow weakens and high pressure builds into the area for Saturday. High pressure on Saturday will bring a halt to the precipitation for most of the area (excluding the higher peaks in the mountains) and highs reaching into the low 60s will bring about a relatively mild day. A second upper low looks to take an extremely similar path to the one today. 4" of rain for the lower elevations of south-central MT through the weekend, and 6-12" of snow for the higher elevations in the Beartooths and Crazies.
208 PM EDT Fri Apr 26 2024 (This afternoon through Saturday) High pressure to the NE, driving NE flow, continues to strengthen the wedge through the overnight hours. Highs today and tomorrow will be in the high 70s to low 80s across the region.
More showers, and isolated thunderstorms, in our CWA this afternoon mainly over higher terrain as a cool upper trough moves in from the northwest.
1137 AM CDT Fri Apr 26 2024 (Today through Saturday) An established broad mid-level trough covering the western half of the nation with a ridge building from the NE Gulf of Mexico north along the eastern third CONUS looks to maintain a tight pressure gradient over Deep South Texas today and Saturday. A Wind Advisory has been issued for the Lower RGV 11 AM-7 PM Today with another probable wind advisory for Saturday with lager areal coverage as a broader and slightly stronger LLJ is shown by the latest model suite. A few light showers are possible early this morning with a weak disturbance passing overhead, otherwise moisture depth is limited and forcing of the low level moisture today or tomorrow is absent with a cold front and dryline remaining well north and west of the South Texas respectively.
As the aforementioned trough overspread the Panhandles and western Oklahoma during the early evening, multiple storms are expected to initiate along the dryline and form into a line.
By Saturday morning the steadier rain is done with just isolated showers through the day as the warm front will focus shower activity north of the forecast area.
615 PM CDT Fri Apr 26 2024 (This evening through Saturday) Tonight, a short-lived mid-level zonal regime will situate over the Southern Plains ahead of a trough in the Desert Southwest. By tomorrow morning, a convergence boundary will form as a result of the low-level jet allowing the possibility of a few storms in the eastern half of our CWA. As the day continues, the trough will enter the Panhandle region with the maximized jet in our area around 0z.
Cooler temperatures and drier weather are expected tonight after a few lingering evening showers.
If we were to see any severe hail, it would be with this third line of storms as the warm front over Iowa continues to lift northward. However, confidence is low that this warm front will make it into Minnesota by this evening, limiting the chances for severe weather. The aforementioned associated warm front will lead to quite a temperature spread from western Minnesota in the mid to upper 50s for highs to near 70 in western Wisconsin.
On Saturday, ridging will maintain an influence and lead to another dry day across NE Montana, but lighter winds are forecast to keep fire weather concerns contained.
906 PM EDT Fri Apr 26 2024 High pressure will dominate the eastern United States through the weekend. High pressure along the Mid-Atlantic Coast will continue to extend south into the region. Shallow isentropic lift and warm air advection focused along the upslope regime along the eastern slopes of the higher terrain continues to support light rain and drizzle primarily over the NC mountains and foothills. Not as cool with overnight lows mainly in the lower to mid 50s, except mid/upper 40s across the NE where clouds are less extensive. As the upper level ridge persists across the Mid-Atlantic region, dry weather is expected to continue over the short term period. At the surface, high pressure off the north Mid-Atlantic coast Saturday morning will continue to influence easterly winds on Saturday.
(Tonight) Our weather tonight (and over the next few days) will continue to be influenced by a low pressure system well off to our west. Winds will remain elevated as the deep low pressure keeps the pressure gradient tight.
Looking for another quiet evening across the region with mild lows only dropping into the low and mid 60s for most under steady SE winds and broken mid to upper clouds. Have backed off the pops in our NW a bit as time heights really don't show much saturation in the lower half of the column. As the low pressure system over the central Plains strengthens and propagates northeastward, pressure gradients will tighten over the Ohio Valley. The warm front associated with this system will sweep through the region in the overnight hours, shifting winds to a southerly direction and allowing weak moisture advection. Low temperatures will be in the low-mid 60s. The low pressure system will quickly move over the Great Lakes region, pulling most of the precipitation to the north of the region.
741 PM EDT Fri Apr 26 2024 - Highs are much warmer over the coming days with 70s being the norm.
631 PM CDT Fri Apr 26 2024 (This evening through Saturday night) Gusty winds reside across the region this afternoon as a strong onshore flow has developed between a low (or what will be a series of lows across the plains this weekend) and high pressure over the western portions of the Atlantic. This will keep pushing warmer and more moist flow across the region. A cold front should stall upstream as the front begins to become parallel to the mean flow.
This evening, a weak trough lingers over the area while a low pressure system reorganizes over Utah. As the low pressure system strengthens in Utah, expect easterly flow aloft to persist, leading to scattered showers across the West Central and Boise mountains of Idaho, as well as the Western Magic Valley, until Saturday afternoon.
High pressure centered near New England stretches southwest across Florida. A lingering trough axis north of the Bahamas will be washed out by the building high overnight. High pressure centered over New England will dive southeastward into the western North Atlantic through the weekend.
(This afternoon through Saturday) High pressure to the NE, driving NE flow, continues to strengthen the wedge through the overnight hours. Highs today and tomorrow will be in the high 70s to low 80s across the region.
700 PM EDT Fri Apr 26 2024 High pressure will dominate the eastern United States through the weekend. Light enely flow continues this afternoon as high pressure extends down into our area. Further southwest, a warm front draped across the TN valley continues to generate clouds and light rain mostly over the southern Appalachians. Overnight lows will dip into the lower to mid 50s. As the upper level ridge persists across the Mid-Atlantic region, dry weather is expected to continue over the short term period. At the surface, high pressure off the north Mid-Atlantic coast Saturday morning will continue to influence easterly winds on Saturday.
The Northern Rockies sits under a deep trough of low pressure extending south through the Great Basin this morning. This trough is one in a series of disturbances lined up over the northeastern Pacific Ocean and moving towards the northwestern U. In the near-term, rain will grace the forecast for today, with the highest probability for precipitation being across southwest Montana and Lemhi County due to a midlevel circulation to the southeast sending moisture back up from the south. As todayâs trough of low pressure moves east overnight tonight, upper level flow becomes westerly as the next disturbance moves down the Canadian coast on Sunday. Expect valley rain and high elevation snow to continue into Sunday morning with an increase in westerly winds in the afternoon with the passing of a weak cold front.
1223 AM EDT Sat Apr 27 2024 High pressure will cross the region into Saturday then slowly exit to the east later Saturday into Sunday. A warm front will cross the region Sunday.
If we were to see any severe hail, it would be with this third line of storms as the warm front over Iowa continues to lift northward. However, confidence is low that this warm front will make it into Minnesota by this evening, limiting the chances for severe weather. The aforementioned associated warm front will lead to quite a temperature spread from western Minnesota in the mid to upper 50s for highs to near 70 in western Wisconsin. Thunderstorm wise, we will again find ourselves on the wrong side of the warm front with any severe chances remaining to our south and east.
434 AM EDT Sat Apr 27 2024 A warm front will pivot north through the region offering a chance of a shower or thunderstorm mainly this morning. Warmer temperatures and generally dry conditions are expected for the remainder of the weekend.
Large area of low pressure is moving across northern Arizona this evening with scattered showers and isolated thunderstorms. The convective activity has brought a wintery mix of precipitation to the higher elevations. Cloud cover is quickly invading northern Arizona, with the increase in moisture ahead of the incoming trough. As for rainfall amounts, areas across the higher terrain could see near 0.
1201 AM CDT Sat Apr 27 2024 Based on forecast water levels, have extended the Coastal Flood Advisory through the high tide cycle Sunday afternoon.
At the surface, low pressure sits over the SD/MN border, with another low over southwestern WY. Out ahead of the next wave, CAMs hint at isolated showers possible later this morning and afternoon across the western South Dakota plains, while bulk of expected precipitation moves in this evening into Sunday as the upper trough swings into NE eventually eastern SD.
200 AM MDT Sat Apr 27 2024 Satellite imagery shows an upper low near the 4-corners and an elongated trof axis behind the low extending from southern BC to NV. Morning precip will be light, but as the upstream trof axis moves slowly to the east and with modest diurnal instability, shower activity will intensify a bit in the afternoon and evening. The probability of exceeding a half inch of precip over the high terrain is only 30%. The easterly flow will shift to westerly tonight as the trof continues to push eastward, and the upper low to our south lifts thru the central plains (i.
The mid/upper level low continues it's slow progression east- northeast and is filling in again where a mid level dry slot was in place earlier.
Strong southerly moisture transport will continue to advect higher moisture back into the area this morning while the surface boundary retreats back to the north as a warm front. Convective initiation could concurrently occur along the warm front across northern and north-central KS this afternoon. A trailing cold front will work through northeast KS during the afternoon.
Some wind gusts will hang around into tonight as well, as the gradient persists and the low level jet strengthens.
(Today through Sunday) High pressure remains the predominant weather across the region with most of the activity develop along the edges of the high and remaining to our south and west.
At the surface, A warm front has lifted mostly through the forecast area with a dryline extending south through central KS. These storms are expected to swing to the north and east quickly this evening which may limit the tornado risk for our area since storms would be exiting as the low level jet and SRH increase.
Otherwise broad warm advection continues downstream of sfc cyclone and potent parent wave aloft over nw IA with modest theta-e riding poking into the srn lakes. Adequate low level theta-e ridge remains in place and with substantial diurnal destabilization will lead to redevelopment of showers/storms this aftn within sfc confluence zone broadly pinned through nrn IN/nw OH. Plains low will release on a similar trajectory as the current sys, into sw ON by late Mon as cold front washes out ewd.
As the approaching large-scale trough and associated lift interacts on the dryline, expected another round or two of scattered thunderstorms to develop along and ahead of the dryline.
An upper level trough will move across the area Sunday combining with abundant moisture and moderate instability to produce a 20%-50% chance of showers and thunderstorms over the northern Brush Country and Victoria Crossroads.
A cold front will then move across the Panhandles Saturday night and most of the area will be cooler by about 5 to 10 degrees on Sunday. An upper level low will move from Colorado on Saturday through Nebraska and into South Dakota by Sunday.
Continued ridging in place over the region at the start of the period, with strong southerly flow into the Ohio Valley for Sunday. Temperatures push into the low/mid 80s with partly cloudy skies.
(Today) Mid/high cloud cover continues to spread into mid TN Valley from the SW, as an upper ridge pattern gradually moves eastward into the southern Atlantic states. SSE flow is also well entrenched over much of the region, as high pressure becomes anchored off of the mid/southern Atlantic Coast. With the upper ridge axis also remaining in place over parts of the region, highs look to again climb mainly into the upper 70s/lower 80s.
At the surface, the forecast area is now entirely in the warm sector, with a warm front north of the area in MO, and a dryline located over OK. Of note is an area of partial clearing extending from south-central AR up to NE Arkansas where temperatures are a bit warmer than surrounding regions.