Aikyam-Lab/Synoptic-Bench huggingface dataset:
The mid level trough that has been driving our weather will be moving off to the east at the start of the period and upper level ridging will be moving in.
412 PM EDT Tue Apr 15 2025 * Numerous SHRA and isolated TSRA accompany the passage of an upper level trough this afternoon. * Become windy and turning much cooler with rain showers changing to snow showers over the Laurel Highlands and Northwest Mountains this afternoon and continuing into Wednesday morning. * A light accumulation of 1 to 2 inches of snow is likely across the higher terrain near and to the West of Route 219. Mixing heights up to 10k feet are tapping robust bulk shear and low freezing levels to produce strong sfc wind gusts over 40 kts and pea sized hail.
1154 AM CDT Tue Apr 15 2025 - Clearing today and staying cooler, then warming trend Weds/Thurs.
137 PM PDT Tue Apr 15 2025 * Warmer weather continues through Wednesday with snowmelt resulting in streams running fast and cold.
110 PM CDT Tue Apr 15 2025 - Cold frontal passage early this morning may bring a few showers, followed by cooler and drier air through Wednesday.
- Cooler temperatures will continue through followed by a warming trend through the end of the week.
Overnight winds should calm down in all areas except for the highest elevations of the Southern Appalachians which could still see some elevated gusts as the jet slowly exits the region. Under the clear skies, overnight lows will drop about 10 degrees cooler than what we experienced this morning. Warming trend through the weekend as ridging sets up across the Southeast.
148 PM CDT Tue Apr 15 2025 Tonight and Wednesday: High pressure is building in today in the wake of a cold front.
pdf Breezy pre-frontal westerly winds will subside into the early evening as cloud cover thickens ahead of an approaching cold front. Rain chances taper off from west to east through 06z tonight as drier and cooler air filters southward across SE GA, then clearing skies across NE FL through daybreak Wed.
Skies have remained full of sunshine and temperatures have risen into the lower 80s, while dew points have remained comfortably in the lower to mid 60s. Quickly filling in behind this front will be a high pressure that is shifting southeast out of the Central Plains.
222 PM EDT Tue Apr 15 2025 Only minor changes to the forecast this morning which involved increasing forecast wind gusts for this afternoon as a cold front moves through the region. (Today and tonight) We will temporarily move away from the recent deep layer high pressure regime today as a short wave trough moves from the Mississippi Valley across the Southeast before moving east of the area tonight. This trough will help usher a cold front through the forecast area. It will be a cooler night behind the front will morning lows in the mid 40s north to lower 50s near the coast.
(Tonight through Wednesday night) The cold front has stalled this afternoon, expected to gradually lift northward through tonight. The main impact is cooler afternoon temperatures in the upper 70s and 80s for most locations. Along the Rio Grande, the low 90s will be more common.
Accumulating snowfall will primarily be confined to the higher elevations of the Adirondacks and Green Mountains, especially given the April sun angle and limited snowfall rates.
Mid level moisture will move up from the south ahead of the upper low and could sneak into portions of our northern California counties (Siskiyou and Modoc) late this afternoon and evening along with marginal instability. Wednesday, there's pretty good agreement the incoming inside slider (upper trough) dropping in from the north will be a bigger play maker in terms of thunderstorm potential Wednesday afternoon and evening. The upper trough will bring gusty breezes east ofthe Cascades in the afternoon and early evening hours Wednesday along with cooler afternoon temperatures for the interior.
657 PM EDT Tue Apr 15 2025 Showers drop in coverage and transition to snow north of I-80 and in the ridges tonight.
1047 PM EDT Tue Apr 15 2025 Showers drop in coverage and transition to snow north of I-80 and in the ridges tonight.
Temperatures have dropped after sunset and are now in the lower 70s across the island chain. Overnight, as the high pressure shifts into the western Gulf, winds will slightly increase to 5 to 10 knots and be northwesterly. From synopsis, high pressure is shifting into the western Gulf waters allowing winds locally to clock around from the northwest overnight. A decaying cold front will clip the area on Wednesday with a reinforcing northerly wind.
606 PM CDT Tue Apr 15 2025 (This afternoon through Wednesday) Behind this morning's cloudy but rain-free frontal passage, an area of dry high pressure is advancing on the region.
BB-8 Latest water vapor imagery shows upper trough axis over southeast CONUS is moving steadily eastward, and model data indicates that the trough will be off the east coast by early Wednesday with ridging, both surface and aloft, building over our local area through Wednesday night. Surface front has moved south across the area this morning and much drier and somewhat cooler air will be building into the region tonight through Wednesday night. Daytime highs on Wednesday will be in the low to mid 70s across the entire area (but with much lower dewpoints and less humidity). Overnight lows both tonight and Wednesday night will be in the 40s for all inland locations and in the low to mid 50s closer to and along the coast.
802 PM EDT Tue Apr 15 2025 Showers drop in coverage and transition to snow north of I-80 and in the ridges tonight.
Dry and cooler conditions are expected tonight in the wake of the front. Isolated cold spots may read a few degrees cooler if the boundary layer can decouple.
With sunset and building high pressure, winds have dropped off in the last few hours, and that trend will continue overnight. Overnight winds should calm down in all areas except for the highest elevations of the Southern Appalachians which could still see some elevated gusts as the jet slowly exits the region. Under the clear skies, overnight lows will drop about 10 degrees cooler than what we experienced this morning. Warming trend through the weekend as ridging sets up across the Southeast.
612 PM CDT Tue Apr 15 2025 Tonight and Wednesday: High pressure is building in today in the wake of a cold front.
731 PM EDT Tue Apr 15 2025 A passing light shower may accompany a cold front this afternoon through early this evening.
A return of stratus will bring cooler temperatures to the coastal areas.
Minimal updates to the forecast this evening as temperatures remain slightly warmer and dew points slightly cooler than forecast. Accumulating snowfall will primarily be confined to the higher elevations of the Adirondacks and Green Mountains, especially given the April sun angle and limited snowfall rates.
High pressure ridging across central and southern Florida has kept warm and rain-free conditions across the region today. A mostly dry cold front is making its way south across northern Florida and will continue to push southeast through Florida overnight.
737 PM EDT Tue Apr 15 2025 * Numerous SHRA and isolated TSRA accompany the passage of an upper level trough this afternoon. * Become windy and turning much cooler with rain showers changing to snow showers over the Laurel Highlands and Northwest Mountains this afternoon and continuing into Wednesday morning. * A light accumulation of 1 to 2 inches of snow is likely across the higher terrain near and to the West of Route 219. Mixing heights up to 10k feet are tapping robust bulk shear and low freezing levels to produce strong sfc wind gusts over 40 kts and pea sized hail.
Calm and cooler conditions prevail across the area this evening. /DL/ Tonight and Wednesday: High pressure is building in today in the wake of a cold front.
559 PM CDT Tue Apr 15 2025 (Tonight through Wednesday night) The cold front has stalled this afternoon, expected to gradually lift northward through tonight. The main impact is cooler afternoon temperatures in the upper 70s and 80s for most locations. Along the Rio Grande, the low 90s will be more common.
453 PM MDT Tue Apr 15 2025 - High pressure will produce warm, dry weather today.
An upper level low is still on track to move into the area tomorrow, bringing gusty winds, precipitation, and a chance of thunderstorms to part of the area.
645 PM CDT Tue Apr 15 2025 (Rest of Today and Tonight) In wake of a cold front that pushed through the Tennessee Valley last night, a cooler and drier air mass to the region has moved into the area. Otherwise, notably cooler conditions, with highs struggling to climb above the mid 60s in most locations despite the ample sunshine. After sunset, winds will quickly decouple as the pressure gradient decouples and lows will drop into the lower 40s in this cool/dry air mass under a clear sky.
944 PM CDT Tue Apr 15 2025 Following a very warm afternoon, mid-evening temps have fallen off rapidly since sunset given the dry air in place, as sfc ridging is anchored from the Ozarks S into E TX/Lower MS Valley. This sfc ridging should continue to slide ESE into the MS Valley overnight, with good radiational cooling conditions expected as the patchy cirrus noted on the evening satellite imagery over portions of OK continues to gradually erode as it approaches the region. The GFS has initialized best with the current cu field, which has just recently shown a slow Nwd shift between ATT and CLL, with this trend expected to continue overnight as the H850 ridge shifts SE towards Sabine Pass and SW LA through daybreak Wednesday.
450 AM EDT Wed Apr 16 2025 - After a cool-down for today and Wednesday, warmer temperatures will return and carry through the weekend.
1029 PM MDT Tue Apr 15 2025 - High pressure will produce warm, dry weather today.
Clouds will then decrease through the rest of the overnight as high pressure begins to build into the CWA.
Upper low has moved to western Utah this morning with moisture still wrapping around the northern and western sides and causing light rain showers in south-central Idaho. After clearing and cooler wx tonight, the next upper trough will approach from the northwest Tuesday with light rain showers in northern areas but only sprinkles to the south.
207 PM EDT Mon Apr 28 2025 Drier and somewhat cooler air will remain over the area today.
1158 AM EDT Mon Apr 28 2025 High pressure will cross the Appalachian Mountains through tonight.
240 PM EDT Mon Apr 28 2025 Canadian high pressure will build across and offshore the Middle Atlantic today, then drift toward Bermuda through mid to late week. Low-level thicknesses will rise some early Tuesday morning, and given the weak sly flow, expect a bit warmer overnight lows tonight in the mid to upper 40s. At the surface, high pressure will drift across the swrn N. Meanwhile, a synoptic cold front will progress across the Northeast, nrn Middle Atlantic, and upr OH Valley. The cold front will likely be preceded by aggregate outflow across the Virginias.
955 PM EDT Mon Apr 28 2025 High pressure will slide off of the North Carolina coast tonight into Tuesday, settling between the Carolinas and Bermuda through the remainder of the week.
An upper ridge extending from the western Gulf to southeast Canada will continue to shift eastward over our region through midweek, with large-scale subsidence bringing dry conditions to the forecast area for Tuesday, with the exception of a few showers and storms over the extreme eastern portion of the forecast area by late in the afternoon.
Deep layered ridging dominates with the lower to mid level ridge aligned over Florida and the southeast. While deep layered ridging is expected to dominate, satellite imagery and guidance suggests the remnants of a cold front will drive southwestward into our area late in the night.
557 PM CDT Mon Apr 28 2025 (This evening through Tuesday Night) Quiet conditions across the forecast area today, as upper ridging remains over the region. By tonight, the ridge will start to slowly push eastward. At the same time, a closed upper level trough will be digging through the Great Basin Region of the Rockies into the Four Corners Region of the SW CONUS. Ahead of trough and behind the ridge, flow aloft will become southwesterly. Dry weather should return for most of area on Tuesday, as the upper ridging will still try to hang on across the region. But, as we move throughout the day, the ridge will shift east enough to allow southwest flow to setup areawide.
1052 PM EDT Mon Apr 28 2025 High pressure will move offshore the Middle-Atlantic states through tonight, then drift toward Bermuda through mid to late week. Looking aloft, a mid- level ridge will remain extended from the Gulf Coast into the TN Valley. Water vapor imagery depicts ample dry air across the Southeast US on the downstream side of the ridge, and skies over central NC will remain mainly clear overnight. By Tuesday afternoon, sswly flow will organize a bit bumping temperatures up into the lower to mid 80s. Moisture return will be limited, however, as dew points mix out into the lower to mid 50s (highest west) Tuesday afternoon. The only caveat is that some of the high-res guidance suggests some upstream convection may traverse the mountains and hold together long enough to drop a few hundreds over the Triad.
A stationary front was sitting from northwest to southeast across AL, with a high pressure ridge wedging from the Carolinas into eastern AL.
730 PM EDT Mon Apr 28 2025 High pressure will move offshore the Middle-Atlantic states through tonight, then drift toward Bermuda through mid to late week. Otherwise, low-level thicknesses will rise some early Tuesday morning, and given the weak sly flow, expect a bit warmer overnight lows tonight in the upper 40s to lower 50s. By Tuesday afternoon, sswly flow will organize a bit bumping temperatures up into the lower to mid 80s. Moisture return will be limited, however, as dew points mix out into the lower to mid 50s (highest west) Tuesday afternoon. The only caveat is that some of the high-res guidance suggests some upstream convection may traverse the mountains and hold together long enough to drop a few hundreds over the Triad.
651 PM EDT Mon Apr 28 2025 High pressure will slide off of the North Carolina coast tonight into Tuesday, settling between the Carolinas and Bermuda through the remainder of the week.
Dry conditions will prevail overnight as a sharp upper ridge passes overhead. The next upper wave, currently approaching the BC coast, is still on track to cross the Pac NW on Tuesday as the ridge shifts east.
(Through Tuesday) A stalling backdoor cold front continues to be the focal point for showers and storms this evening.
705 PM EDT Mon Apr 28 2025 (Through Tuesday) A stalling backdoor cold front continues to be the focal point for showers and storms this evening.
- Some rain/snow mix may linger tonight as cooler air arrives behind a cold front. Dew points are to the low to mid 60s north towards Minneapolis and the upper 50s in our immediate vicinity. Looping hodographs in the low levels support this threat as well. The best estimate for where the warm front will end up is roughly along and south of US2. As the low-pressure system moves eastward, showers will persist through approximately midnight. Behind this system will be much cooler temperatures. Tuesday will bring significantly cooler temperatures, with highs in the 40s and 50s.
555 PM MDT Mon Apr 28 2025 - Tuesday will be warmer for most locations, along with drier and less windy conditions.
506 PM CDT Mon Apr 28 2025 (Tonight) Under mostly clear skies temps have risen into the low to mid 80s across the area. High pressure will continue to dominate through the night promoting clear skies and continues SE flow bringing in warm air from the Gulf Stream.
1228 AM CDT Tue Apr 29 2025 (This evening through Tuesday Night) Quiet conditions across the forecast area today, as upper ridging remains over the region. By tonight, the ridge will start to slowly push eastward. At the same time, a closed upper level trough will be digging through the Great Basin Region of the Rockies into the Four Corners Region of the SW CONUS. Ahead of trough and behind the ridge, flow aloft will become southwesterly. Dry weather should return for most of area on Tuesday, as the upper ridging will still try to hang on across the region. But, as we move throughout the day, the ridge will shift east enough to allow southwest flow to setup areawide.
(Today through Wednesday Night) Ridging across the Southern Plains/SE/E CONUS continues to shift eastward today as closed low approaches from the Desert Southwest. Subsidence and dry mid-lower levels should work to suppress rainfall today, though modest PWs and weak impulses preceding the low will keep rain chances from being zero. Wednesday should start to see more active weather as the aforementioned low/upper level trough pushes into the Southern Plains/Texas. 5 DegC/km, though the freezing level and WBZ level are rather high.
(Today through Wednesday Night) Ridging across the Southern Plains/SE/E CONUS continues to shift eastward today as closed low approaches from the Desert Southwest. Subsidence and dry mid-lower levels should work to suppress rainfall today, though modest PWs and weak impulses preceding the low will keep rain chances from being zero. Wednesday should start to see more active weather as the aforementioned low/upper level trough pushes into the Southern Plains/Texas. 5 J/KG, though the freezing level and WBZ level are rather high.
Overnight, a strengthening low-level jet and an advancing cold front will result in increasing thunderstorm coverage--especially across northern Oklahoma. Mahale (Tuesday through Wednesday night) By Tuesday, a cold front will advance southward into the Southern Plains and stall near the I-44 corridor. Flash flooding will become a significant hazard on Tuesday through Wednesday with mid/upper-level flow parallel to the quasi-stationary cold front with multiple rounds of thunderstorms expected. The location of the cold front will modulate the greatest risk of severe weather on Tuesday and Wednesday (i. , the greatest risk will be along and south of the cold front).
Transient high pressure will keep the region dry today.
Upper ridging extends from the western gulf northeastward through the southeast U. On the surface, high pressure centered off the mid-Atlantic states ridges southwest through GA/AL and into the central gulf. A predominant easterly low level wind flow will allow for showers and storms to move from east to west later this afternoon/evening with the highest coverage south of the I-4 corridor. By Wednesday morning, the stationary front is completely washed out and high pressure off the Carolina coastline ridges southwest across Florida and will usher in some slightly drier air with PWAT dropping below 1 inch.
An upper ridge extending from the western Gulf to southeast Canada will continue to shift eastward over our region through midweek, with large-scale subsidence bringing dry conditions to the forecast area for Tuesday, with the exception of a few showers and storms over the extreme eastern portion of the forecast area by late in the afternoon. The upper ridge begins to breakdown on Wednesday in response to a medium amplified upper trough exiting the southern Rockies and out over the southern Plains. Low temperatures in the low to mid 60s are expected north of I-10, mid to upper 60s south to the coast are expected.
The highest precip amounts are still tracking to be in the Cascades.
Solutions cont to focus the higher PoPs over northern and western AR.
236 AM CDT Tue Apr 29 2025 - Much cooler today with highs in the middle 60s. A cold front is moving through the area as of 07Z. With a much cooler and more stable air mass across the forecast area, the threat of severe or even strong storms is very limited.
CAMs depict several rounds of showers and thunderstorms associated with an approaching cold front today.
A cold front will move south over the CWA tonight into tomorrow morning. The northerly winds will also usher in cooler air and high temperatures for Tuesday have a high chance of remaining below 70 degrees. With troughing to the west of the CWA tomorrow, upper level disturbances should traverse over the High Plains tomorrow into tomorrow night, providing ample lift for thunderstorms should enough moisture be in place. Even though this is definitely not a typical severe thunderstorm set up, especially with the Panhandles being behind a cold front, there is some potential for a few severe thunderstorms on Tuesday night.
Above normal temperatures today with highs mainly in the lower 80s. Discussion: In the upper levels, a ridge is centered over the Southeast today. At the surface, high pressure is over the Mid-Atlantic and Southeast today, slowly drifting eastward tonight as low pressure moves into New England bringing a stalling frontal boundary over the Ohio Valley tonight. With mostly sunny skies, WAA and ridging, highs will be above normal in the lower 80s in the Tennessee Valley.
Dry conditions, with daily afternoon breeziness, through the rest of this week will precede another weather disturbance that is anticipated to bring stronger winds and cooler temperatures to the region this weekend. Midday satellite shows an elongated positively tilted trough from SoCal all the way up through the Northern Plains. Global models show the trough over the Southwest will be slow to move out and linger through tomorrow, while slowly weakening. A major pattern shift will commence heading into this weekend, as another Pacific trough will deepen across western CONUS.
1117 PM MDT Mon Apr 28 2025 - Unsettled weather continues throughout the week with scattered showers and isolated storms developing over the high terrain each afternoon.
Issued by National Weather Service Hastings NE 337 AM CDT Tue Apr 29 2025 - 20-25 degrees cooler today than yesterday. - Warmer for weekend and remainder of the forecast. Overall temps will take a brief hit before warming again with multiple chances for precipitation Due to the cold frontal passage last night, eastern Nebraska and southwest Iowa will be about 20-25 degrees cooler than yesterday. Highs yesterday were in the 80s to low 90s and today highs are expected in the low to mid 60s. The highest chances (greater than 50%) will be across extreme southeastern Nebraska and southwest Iowa. Even with the higher chances for precipitation, the amount of rain is expected to be less than 0.
/05/ (Wednesday Night through Tuesday) Conditions forecast to improve on late Wednesday evening into the overnight hours as surface and upper low translate northeast into Missouri.
213 AM EDT Tue Apr 29 2025 High pressure will extend from near Bermuda to the South Atlantic states this week. To its north, aggregate outflow from upstream convection over the lower Ohio Valley today and the Virginias tonight may drift into North Carolina on Wednesday, while a following backdoor cold front will settle south across Virginia.
High temperatures thus far this afternoon have risen into the lower 80s as of 330 PM CDT, perhaps running a few degrees lower than expected due to a slight overperformance of cloud cover. It's effectively a persistence forecast tomorrow ahead of our next potentially active period on Wednesday with highs expected to reach the low 80s at the coast and the mid 80s further inland. Another night of lows in the lower 70s is on the cards yet again.
Strong moisture advection will create a much more unstable atmosphere as a warm front currently draped across southwest WI moves north and east. As the event progresses and a cold front starts to push into the western part of the forecast area storms are forecast to grow upscale into a QLCS. Behind the cold front there may be some lingering thunderstorms Tuesday morning, but the risk for any severe storms at that time will be low.
Issued by National Weather Service Gray ME 127 AM EDT Tue Apr 29 2025 High pressure will crest south of the area tonight. A cold front will approach Tuesday and cross the region early Wednesday morning followed by high pressure building in from the west.