Aikyam-Lab/Synoptic-Bench huggingface dataset:
836 AM PDT Sun Apr 28 2024 High pressure brings quiet weather and slowly warming temperatures this week. Breezy onshore winds will keep temperatures along the coast cooler however.
1238 PM CDT Sun Apr 28 2024 (Today through Monday night) A weak cold front has been cruising south through the area tonight, bringing in a marginally cooler air mass with northwest winds. Subtle ridging aloft takes over Monday, allowing for the start of a much warmer week.
A weak trough will pass through the Intermountain West mid-week resulting in breezy conditions and a slight decrease in temperatures. The upper level trough which brought gusty winds and much cooler temperatures to our region over the past few days is now departing eastward into the Southern Plains. 500 mb hghts will rise to around 572-575 dam today, allowing temperatures to return to seasonal norms with highs reaching the upper 80s to near 90 across the lower deserts of AZ and southeast CA.
Dew points in the low-mid 30s will limit instability but sbcapes should reach 100-300 j/kg, so we may see a few weak thundershowers near the front, which isn't expected to reach our west until late afternoon. The cold front/convection combo has the potential to produce gusty winds (up to 45 mph) late in the day, starting in our west of course. Our foothills could see some wet snow mixed in, but its more likely only the higher elevations see any snowfall accumulations, generally ranging from 4 to 8 inches over the higher Beartooth peaks.
Showers and thunderstorms will start to move into the area Monday afternoon and continue into Monday night as a cold front crosses the area. High pressure will build in for midweek. Lows will generally be in the lower 60s. Showers and thunderstorms will develop on Monday afternoon along a pre-frontal trough. There could be a secondary axis along the actual cold front that moves in late. Temperatures will be back in the lower to mid 80s in most places, although clouds may thicken early enough to keep readings in the upper 70s west of I-75.
357 PM EDT Sun Apr 28 2024 High pressure will prevail through much of the week.
Surface winds converge along a trough in the eastern CWA by Monday afternoon.
Westerly flow aloft continues today as a trough approaches the Pacific NW. This trough will bring a cold front through the area late tonight into Monday morning and bring scattered rain and snow showers to the area.
112 PM EDT Sun Apr 28 2024 High pressure southeast of the area leads to summer like weather thru Monday, with hot afternoons.
High pressure continues to build offshore as a cold upper trough digs into the PNW. Offshore flow and high pressure will promote warming and drying in the interior late week. Light stratiform drizzle has dissipated across the north coast this afternoon following a weak cold frontal boundary. Low level moisture trapped beneath encroaching high pressure subsidence will return low stratus to coastal Del Norte and Humboldt counties this evening into Monday morning.
656 PM CDT Sun Apr 28 2024 - A cold front's approach tonight will drive a line of storms into/across the area.
753 PM EDT Sun Apr 28 2024 High pressure will prevail through much of the week.
1100 PM EDT Sun Apr 28 2024 A cold front drops south through the area this evening bringing a round of showers with embedded thunder. High pressure builds in Monday for fair weather.
Showers and thunderstorms will start to move into the area Monday afternoon and continue into Monday night as a cold front crosses the area. High pressure will build in for midweek. Temperatures will remain mild with overnight lows in the lower 60s. Showers and thunderstorms will develop on Monday afternoon along a pre-frontal trough. There could be a secondary axis along the actual cold front that moves in late. Temperatures will be back in the lower to mid 80s in most places, although clouds may thicken early enough to keep readings in the upper 70s west of I-75.
710 PM EDT Sun Apr 28 2024 A cold front drops south through the area this evening bringing a round of showers with embedded thunder. High pressure builds in Monday for fair weather.
(Tonight) This evening, water vapor imagery shows an upper level trough across the Plains with a line of severe storms along its eastern extent from Arkansas southward into eastern Texas. As these storms push further ahead of the trough axis, a weakening trend is expected as they outrun the better instability and forcing. With mostly clouds skies in place, a mild night is in store with forecast morning lows only dipping down into the lower 60s.
922 PM EDT Sun Apr 28 2024 The warming trend will continue through mid week as high pressure remains centered just off the Atlantic Coast.
617 PM MDT Sun Apr 28 2024 - Warmer and drier conditions to start the week.
The closed upper low that brought meaningful rainfall to portions of the area yesterday continues to lift to the northeast, into portions of central Nebraska. Visible satellite imagery shows the low centered over central and western Nebraska, and some clearing skies across eastern Colorado. The low is expected to continue to lift to the north/northeast overnight with clearing skies.
The Florida Keys remain on the southwestern flank of a large anticyclone now centered east of the Carolinas. A sprawling high pressure system centered southeast of New England will maintain fresh to occasionally strong easterly breezes tonight. As the high presses south into the western North Atlantic, breezes will slacken, although occasionally fresh breezes will continue through the first half of the week.
1019 PM EDT Sun Apr 28 2024 High pressure will prevail through much of the week.
1001 PM EDT Sun Apr 28 2024 Offshore high pressure leads to dry conditions through Monday.
High pressure surface and aloft will hold over the region through Monday with continued dry warm conditions. A progressive U/L trough will move across the southeast U.
After an unseasonably cool Sunday morning, southeastern Arizona will undergo a rapid warming trend over the next few days as mid- level heights rise and a warmer low level air mass moves in. Under sunny skies today (with some lingering clouds around the Whites), high temperatures will be about 8 degrees warmer than yesterday, and then climb another 6 to 8 degrees on Monday reaching into the upper 80s.
752 PM EDT Sun Apr 28 2024 Offshore high pressure leads to dry conditions through Monday.
828 PM EDT Sun Apr 28 2024 High pressure should remain off the southeast United States through mid-week. A closed mid-level low over the Northern Plains lifting north into Ontario combined with a low-amplitude speed max racing through the Southern Plains sliding into the TN Valley will slightly suppress mid level heights (15 to 25m H5 height falls) and shift the low- level anticyclone centered over central NC towards the coast through Mon night.
Additional showers will develop late tonight as a cold front moves through the area.
Passing cold front on Tuesday brings another round of showers and thunderstorms.
Temperatures will mainly be in the low to mid 80s on Monday and mid to upper 80s on Tuesday across the region.
Showers and thunderstorms will start to move into the area Monday afternoon and continue into Monday night as a cold front crosses the area. High pressure will build in for midweek. Temperatures will remain mild with overnight lows in the lower 60s. Showers and thunderstorms will develop on Monday afternoon along a pre-frontal trough. There could be a secondary axis along the actual cold front that moves in late. Temperatures will be back in the lower to mid 80s in most places, although clouds may thicken early enough to keep readings in the upper 70s west of I-75. Consensus now has the trough axis lingering Tuesday morning, and not clearing our eastern counties until near midday. Still, we will likely see a decrease in cloud cover heading into the afternoon with high temperatures reaching into the low to mid 70s by 4-5 PM.
105 AM EDT Mon Apr 29 2024 High pressure should remain off the southeast United States through mid-week. A closed mid-level low over the Northern Plains lifting north into Ontario combined with a low-amplitude speed max racing through the Southern Plains sliding into the TN Valley will slightly suppress mid level heights (15 to 25m H5 height falls) and shift the low- level anticyclone centered over central NC towards the coast through Mon night.
307 AM EDT Mon Apr 29 2024 High pressure will remain anchored offshore through mid week. A cold front will impact the area late in the week. Given how active this time of year could be, the weather is expected to be remarkably quiet today thanks to mid/upper level ridging overhead. At the surface, high pressure has slid further south which will keep more of a southwesterly low-level flow going. Mid/upper level ridging remains overhead tonight, with a continued southwesterly flow helping support mild, above normal, overnight temperatures. The orientation of the high offshore will support a moistening southwesterly flow, with dewpoints forecast to rise into the low 60s through the night.
With the potential for increased cloud cover and moisture, overnight lows will be on the mild side in the low to mid 60s.
1006 PM CDT Sun Apr 28 2024 A slow moving cold front is stretched across the Central Plains. The front and associated dry line has really slowed due to a strong ridge encompassing the east coast.
1159 PM CDT Sun Apr 28 2024 - A cold front's approach tonight will drive a line of storms into/across the area.
Similar conditions continue tonight as temperatures fall from the 80s back into the lower 60s and upper 50s.
136 AM EDT Mon Apr 29 2024 Offshore high pressure leads to dry conditions through Monday.
These short range models show the line reaching the MS/AL state line by mid-afternoon, with considerable weakening of the northern portion of the line towards late afternoon as the low level jet decreases. There may be a 3-6 hour window, in the early evening with minimal coverage of convection over west Alabama, then additional convection develops over MS as the mid level trof axis approaches with steepening mid level lapse rates.
A large scale upper trough will take shape over the Northern Rockies while height falls east of this trough will allow low level moisture to re-enter the region.
High pressure east Carolina coastline will continue to dominate the region today, as it has for the past few days. Little change to the sensible weather is expected today from what we have been seeing, as a southerly flow will provide warm temperatures in the lower 80s for most spots. Ongoing convection from Lake Michigan to the Ozarks is occuring along a pre-frontal trough that will make its way east through the day and tonight.
319 AM EDT Mon Apr 29 2024 High pressure builds in through Tuesday.
238 AM CDT Mon Apr 29 2024 - Localized freezing rain is expected for the higher terrain of the North Shore this morning (total ice accumulations around 0.
A few warm frontal rain showers have initiated just north of the surface boundary, but otherwise most areas across the CWA remain dry this morning. As the low slides northeastward into eastern MN / western WI, the warm front will lift northwards and a steadier batch of showers currently moving through central IL will enter southern MI. A few storms will be possible across the eastern CWA during the afternoon as a cold front moves through, but there's still a question on storm strength. Surface ridging moves in place Tuesday leading to the return of dry weather.
1258 AM EDT Mon Apr 29 2024 The warming trend will continue through mid week as high pressure remains centered just off the Atlantic Coast. A weak cold front is expected to move through the area on Tuesday bringing scattered showers and thunderstorms. especially the latter half of the period, as upper ridge axis progresses to the East Coast. downstream of a trough axis advancing east of the Miss River on Monday. As deep layer ridging moves east of the area tonight into Monday, low level flow is forecast to become increasingly SW, which is expected to result in less cloud cover tonight into Monday.
1129 PM CDT Sun Apr 28 2024 A slow moving cold front is stretched across the Central Plains. The front and associated dry line has really slowed due to a strong ridge encompassing the east coast.
The closed upper low that brought meaningful rainfall to portions of the area yesterday continues to lift to the northeast, into portions of central Nebraska. Visible satellite imagery shows the low centered over central and western Nebraska, and some clearing skies across eastern Colorado. The low is expected to continue to lift to the north/northeast overnight with clearing skies. Monday and Tuesday, weak ridging, followed by zonal flow brings warmer temperatures and sunny skies to the area.
1228 AM CDT Mon Apr 29 2024 (Tonight) This evening, water vapor imagery shows an upper level trough across the Plains with a line of severe storms along its eastern extent from Arkansas southward into eastern Texas. As these storms push further ahead of the trough axis, a weakening trend is expected as they outrun the better instability and forcing. With mostly clouds skies in place, a mild night is in store with forecast morning lows only dipping down into the lower 60s.
The Southern Plains returns to southwest flow aloft with a developing longwave trough carving its way into the Intermountain West. This flow will only amplify as strong upper ridging remains anchored across the Southeast U.
Expect widespread fair weather cumulus in the afternoon, highs in the lower 80s and southerly winds of 5 to 10 mph.
406 AM EDT Mon Apr 29 2024 High pressure will remain anchored offshore through mid week. A cold front will impact the area late in the week. Given how active this time of year could be, the weather is expected to be remarkably quiet today thanks to mid/upper level ridging overhead. At the surface, high pressure has slid further south which will keep more of a southwesterly low-level flow going. Mid/upper level ridging remains overhead tonight, with a continued southwesterly flow helping support mild, above normal, overnight temperatures. The orientation of the high offshore will support a moistening southwesterly flow, with dewpoints forecast to rise into the low 60s through the night.
Showers and thunderstorms will start to move into the area this afternoon and continue tonight into Tuesday as a cold front crosses the area. High pressure will build in for midweek, offering a dry period. Mid level flow backs across the low area with 8H jet of 35-40 kts offering an axis of low level theta-e advection. An axis of moisture and marginal instability to advect into ILN/s FA this afternoon ahead of an approaching cold front. Temperatures will be cooler with highs from 70 to 75. Weak high pressure at the surface will be in place across the Ohio Valley.
The regional radar loop shows the first band of rainfall lifting north-northwest through the FA, but mainly north of the highway 200 corridor. The highest precipitation totals have been over west central Minnesota, where between 0. Brief 500mb ridging moves in tonight, which will provide a short window with no rain.
(Today) Early morning satellite imagery shows an upper low shifting east through South Dakota and several convective bands of strong/severe thunderstorms along the mid and southern MS River Valley. Increasing clouds will keep highs limited to the low to mid 80s this afternoon.
338 AM EDT Mon Apr 29 2024 High pressure will prevail through much of the week.
332 AM EDT Mon Apr 29 2024 Today remains dry and sunny due to offshore high pressure.
622 AM CDT Mon Apr 29 2024 - Localized freezing rain is expected for the higher terrain of the North Shore this morning (total ice accumulations around 0.
235 AM PDT Mon Apr 29 2024 Seasonable temperatures and breezy winds will prevail today and Tuesday, except areas near the Oregon border will see cooler conditions.
We have a warm front around and decent deep layer effective shear. A few warm frontal rain showers have initiated just north of the surface boundary, but otherwise most areas across the CWA remain dry this morning. As the low slides northeastward into eastern MN / western WI, the warm front will lift northwards and a steadier batch of showers currently moving through central IL will enter southern MI. A few storms will be possible across the eastern CWA during the afternoon as a cold front moves through, but there's still a question on storm strength. Surface ridging moves in place Tuesday leading to the return of dry weather.
Showers and thunderstorms will start to move into the area this afternoon and continue tonight into Tuesday as a cold front crosses the area. High pressure will then build in for midweek, offering a dry period. Mid level flow backs across the low area with 8H jet of 35-40 kts offering an axis of low level theta-e advection. An axis of moisture and marginal instability to advect into ILN/s FA this afternoon ahead of an approaching cold front. Temperatures will be cooler with highs from 70 to 75. Weak high pressure at the surface will be in place across the Ohio Valley.
Through much of the week, ridging aloft will prevent any airmass change. Later in the week, a weak cold front attempts to push southward and may bring briefly cooler temperatures, but significant airmass change is unlikely.
420 AM MST Mon Apr 29 2024 Updated Aviation Warmer temperatures are anticipated over the next several days with highs rising into the low to mid 90s across the lower deserts. An upper level trough will pass through the Intermountain West mid-week resulting in breezy conditions across southcentral AZ and southeast CA. Latest mid-lvl wv imagery and 500 mb streamline analysis reveals broad longwave troughing over the central U. As we head through today, upper level flow will transition to quasi-zonal as another trough enters the Pacific NW.
1012 AM EDT Mon Apr 29 2024 High pressure will remain anchored offshore through mid week. A cold front will impact the area late in the week. Quiet weather pattern persists across the Carolinas this morning as upper level ridge axis remains centered overhead and Atlantic high pressure extends inland from the Atlantic. Mid/upper level ridging remains overhead tonight, with a continued southwesterly flow helping support mild, above normal, overnight temperatures. The orientation of the high offshore will support a moistening southwesterly flow, with dewpoints forecast to rise into the low 60s through the night.
735 AM EDT Mon Apr 29 2024 High pressure will remain anchored offshore through mid week. A cold front will impact the area late in the week. Given how active this time of year could be, the weather is expected to be remarkably quiet today thanks to mid/upper level ridging overhead. At the surface, high pressure has slid further south which will keep more of a southwesterly low-level flow going. Mid/upper level ridging remains overhead tonight, with a continued southwesterly flow helping support mild, above normal, overnight temperatures. The orientation of the high offshore will support a moistening southwesterly flow, with dewpoints forecast to rise into the low 60s through the night.
The first band of rain is starting to push north of the highway 2 corridor. The regional radar loop shows the first band of rainfall lifting north-northwest through the FA, but mainly north of the highway 200 corridor. The highest precipitation totals have been over west central Minnesota, where between 0. Brief 500mb ridging moves in tonight, which will provide a short window with no rain.
601 AM EDT Mon Apr 29 2024 High pressure builds in through Tuesday.
Current temperatures across the local area are mainly in the upper 60s and highs are still forecast to top out in the lower 80s later this afternoon.
929 AM EDT Mon Apr 29 2024 A frontal boundary will stall over our area today, with afternoon temperatures ranging from the lower 60s north of the boundary to the lower 80s across the Southern Tier.
938 AM EDT Mon Apr 29 2024 Today remains dry and sunny due to offshore high pressure.
KBYX displays isolated showers moving west to northwest through the nearshore waters of the Lower Keys and near the Dry Tortugas at this time. 12z RAOB displayed a moist profile in the lower levels drying out significantly above 730 mb which is why our showers haven't led to much other than moderate downpours. From synopsis, a sprawling high pressure system centered southeast of New England will maintain fresh easterly breezes through the afternoon. As the high presses south into the western North Atlantic, breezes will slacken, although moderate to fresh breezes will continue through the first half of the week.
1055 AM EDT Mon Apr 29 2024 High pressure will prevail through much of the week.
519 AM MDT Mon Apr 29 2024 - Another afternoon of isolated showers and thunderstorms, spreading east with a cold front this evening.
Offshore flow and high pressure will promote warming and drying for the interior, late in the week. Low clouds and stratus have already begun to dissipate as drier air aloft is being infused into the area via high pressure, bringing subsidence and pleasant weather by the late morning. The previously mentioned Pacific high will continue the ridging pattern locally with a meridional flow as it interacts with a mid level trough, to the north of our CWA. These conditions will continue dropping temperatures towards freezing late tonight into Tuesday morning and are expected to spread into the Humboldt and Del Norte interiors.
442 AM MDT Mon Apr 29 2024 - Another afternoon of isolated showers and thunderstorms, spreading east with a cold front this evening.
Closer the coast and behind today's east coast sea breeze, slightly cooler temps are expected in the low 80s. With high pressure weakening and pushing seaward, the directional component will veer ESE/SE with speeds 11-17 kts areawide.
At least isolated rain/snow shower activity is still possible from the Central Mntns east across the Upper Snake Highlands and along the WY border corridor, however, as low pressure resides just to our north, while much of the Snake Plain southward remains dry. Low temps Tue AM will likely drop below freezing across the entire forecast area.
A cold front will cross northern Utah late this afternoon, then stall across central Utah this evening.
625 AM CDT Mon Apr 29 2024 (Today) Early morning satellite imagery shows an upper low shifting east through South Dakota and several convective bands of strong/severe thunderstorms along the mid and southern MS River Valley. Increasing clouds will keep highs limited to the low to mid 80s this afternoon.
Showers and thunderstorms will start to move into the area this afternoon and continue tonight into Tuesday as a cold front crosses the area. High pressure will then build in for midweek, offering a dry period. Temperatures will be cooler with highs from 70 to 75. Weak high pressure at the surface will be in place across the Ohio Valley.
245 AM MST Mon Apr 29 2024 Warmer temperatures are anticipated over the next several days with highs rising into the low to mid 90s across the lower deserts. An upper level trough will pass through the Intermountain West mid-week resulting in breezy conditions across southcentral AZ and southeast CA. Latest mid-lvl wv imagery and 500 mb streamline analysis reveals broad longwave troughing over the central U. As we head through today, upper level flow will transition to quasi-zonal as another trough enters the Pacific NW.
630 AM EDT Mon Apr 29 2024 Today remains dry and sunny due to offshore high pressure.
645 AM EDT Mon Apr 29 2024 High pressure will prevail through much of the week.
An unseasonably cool upper level trough is moving onshore this morning into western OR and WA. This system will bring a cold front through the area today, with snow and graupel showers mainly north of a line from Burns OR to Boise ID this afternoon.
(Tonight) Cloud cover continues to overspread the Tennessee Valley region this afternoon ahead of an approaching cold front from the west.
Surface dewpoints climbing into the low to mid 60s by sunrise Tuesday morning, and when combined with returning south winds, will help keep overnight lows more mild. Lows tonight likely staying in the low to mid 60s.