Aikyam-Lab/Synoptic-Bench huggingface dataset:
(Today and tonight) As upper low finally begins to shift south and east today and tonight (progressing from southwest Oklahoma to the north central Gulf of Mexico by Monday morning) numerous light showers will spread southward from northern, into central and southern Oklahoma today through this evening. The cloud cover and light rain should keep high temperatures in the upper 40s (northern Oklahoma) and the lower-middle 50s most other locations. Northerly winds will increase through the day and persist through the evening, making it feel much cooler. With some decrease in cloud cover possible, temperatures are forecast to fall into the lower to middle 30s across northern Oklahoma and closer to 40 elsewhere.
522 AM CST Sun Feb 4 2024 (Today through Monday Night) The large upper-level low that is associated with the cold front that moved through yesterday continues to spin across Lower Mississippi River Valley. Afternoon high temperatures will be in the low to mid 60s for most of the area today and tomorrow.
456 AM CST Sun Feb 4 2024 (Today and tonight) An elongated upper low currently centered over the TX Panhandle is slowly departing southeastward. Otherwise, mostly clear skies are expected, with the exception of stubborn cloud cover over the southeastern TX Panhandle and northern Rolling Plains closer to the low which will generally continue throughout the day.
1044 AM EST Sun Feb 4 2024 High pressure centered over the Upper Great Lakes will be the primary influence on our weather through much of the upcoming work week featuring days with abundant sunshine, light wind and mild temperatures for early February, with mainly clear and chilly nights. A broad area of high pressure at the surface and aloft extended across the Upper Great Lakes. The Rex Block will transition into a simple high amplitude ridge from the Gomex to Central Ontario, Canada during the mid and late week period as the aforementioned southern stream feature moves well east of the Georgia/Florida. 5C in the east yields quite uniform afternoon max values mainly in the mid to upper 40s, though the higher terrain of Tioga, Sullivan and Northern Schuylkill Counties should see temps capped in the upper 30s.
1118 AM CST Sun Feb 4 2024 - Increasing confidence (>50% probability) that areas of dense fog or freezing fog develop late tonight and again Monday night north of I-70, perhaps leading to a few slick spots.
With somewhat steeper midlevel lapse rates in the vicinity of the upper low, we can't rule out isolated thunder tonight, but rising heights and loose forcing for ascent will preclude any noteworthy convection. Rain will decrease early Monday morning with the departure of the low, with clearing perhaps a bit slower to occur as low level cyclonic convergence persists during the day. A low level jet wrapping behind the upper low will result in rather gusty wind during the daytime, with gusts to around 30 mph possible mainly earlier in the day.
Wrap around moisture on the west side of the low will maintain cloud-cover along with increased chances for light rain through tonight mainly across north Louisiana and south Arkansas. Overnight low temperatures tonight to fall into the low to mid 40s areawide. On Monday, surface and upper-level ridging to continue to gradually build across the region bringing improved sky conditions. Temperatures on Monday afternoon are forecast to climb into the lower 60s.
A very broad mid to upper level closed low oriented from Arkansas to the central Gulf Coast will continue to move eastward and become centered over southern Alabama tonight. Widespread rain showers will continue through the overnight hours as the parent closed low slowly moves southeastward toward the Big Bend of Florida. A decent warm-up is anticipated with the return of sunshine into the lower 60s, while southern locations will likely stay in the 50s as clouds linger through the day.
Similar to yesterday, the stagnant upper low over Louisiana is allowing for scattered showers and thunderstorms to develop over the area.
- The next storm system will bring cooler temperatures and stronger winds mid-week, but the precipitation outcome is more uncertain. Temperatures are sitting in the 70s and 80s across the forecast area with visible satellite showing a few minor cumulus fields in and around the high terrain. Conditions are expected to stay benign through the afternoon and into the evening hours as the ridge of high pressure continues to sit overhead. The jet will be strongest near the Pine Ridge, so would not be surprised to see gusts over 40 MPH in Chadron tonight. Another warm day is expected on Sunday as the CWA sits under the backside of the ridge. It is possible that temperatures do stay a little cooler than forecast tomorrow as a weak upper-level disturbance traverses the CWA ahead of a trough.
648 PM CDT Sat May 10 2025 (This evening through Sunday Night) Scattered showers and isolated thunderstorms will continue developing across the area as heating interacts with lingering moisture and weak disturbances rotating behind the mid-upper low situated to our east. On Sunday, the upper low over ncntl LA retrogrades back closer to the Sabine. Rain will again taper off in the evening with lows Sunday night even a touch cooler in the upper 50s.
This convection brushed portions of the Lower Keys thereafter, while a stronger, mature cell pushing through the Marquesas Keys, where KBYX radar even detected possible small hail as it pushed through.
(Today through Monday) Upper low over western Louisiana early this morning with ridging off the Atlantic Coast and over the southern Rockies. At the surface, weak low pressure was centered near Jackson, with an occluded front to our north and east. Skies were mostly cloudy across the area at 3 AM CDT with temperatures generally in the lower and middle 60s, although there were a few upper 50s across northern portions of the area.
1220 AM CDT Sun May 11 2025 (Rest of tonight and Sunday) A nearly stagnant upper low continues to keep warm tropical air advecting over the region from the southeast Atlantic coast.
Energy on the western extent of a mid to upper level low centered over the Lower Mississippi Valley will move into our area through the short-term period. Overnight temperatures will be on the cooler side and below normal, while Sunday's highs will be around normal. Highs tomorrow will range from the 80s along the coast to the low 90s out west.
1122 PM CDT Sat May 10 2025 (This evening through Sunday night) A cutoff upper level low is centered across the Lower Mississippi Valley, just north of the CWA. A decent dry slot on the southern portion of the upper low and lending to much lower rainfall amounts today compared to last week. Regardless, if any storms do develop, large hail will be the main threat with such a deep upper low nearby as it causes mid level temps to be quite cold.
1106 PM EDT Sat May 10 2025 Low pressure exits across the Maritimes tonight. High pressure builds toward the region Sunday.
112 AM EDT Sun May 11 2025 High pressure remains in control through through the weekend. The high then builds offshore on Monday, placing the area between low pressure to the west and high pressure to the east through the rest of the week. High pressure will continue to slowly build into the region with a zonal flow aloft. High pressure dominates through the period with its center moving in during Sunday night. The main exception would be over CT where it should end up a little warmer this time. The NBM was used for temps, with a return flow out of the S keeping the coasts cooler. The residual upr trof over the region on Thu will then likely allow for addition shwrs and isold tstms to develop. VFR as high pressure gradually builds in from the northwest.
402 AM EDT Sun May 11 2025 For the first time all month, dry weather is expected today as high pressure builds across the region.
1152 PM MDT Sat May 10 2025 - Showers and thunderstorms capable of producing gusty outflow winds, small hail, and moderate rainfall rates will develop over the higher terrain each afternoon this weekend.
A shift begins late tonight as a broad low pressure system moves in from the west, bringing cooler temperatures and periods of light precipitation. An inverted thermal trough remains in place, but changes begin overnight as a broad low pressure system approaches. Thunderstorms will become possible by the afternoon as cooler air aloft increases instability, with CAPE values around 200 J/kg supporting isolated thunder development. On Monday, a second round of showers and thunderstorms are expected as the low pressure system continues eastward. Cooler temperatures aloft will again destabilize the atmosphere, increasing the potential for convective activity through the day and into the evening.
We will remain on the soggy east side of this upper level low likely centered over Louisiana. The good news is by Monday, things look to eventually calm down a little as dry air begins to wrap around the upper low and we move out of the more favorable region.
Center of a strong area of high pressure at the sfc is just NE of the area, with a broad upper ridge to our west that will slowly build this way through Monday. This front will be in the weakening stages as it continues to shear out with the mature upper low. It will bring enough moisture in the lower levels, along with cooling mid levels to develop some weak instability. The good news is with the limited instability, deep layer shear is quite weak with wind fields aloft on the lower side near the upper low.
(Rest of tonight and Sunday) A nearly stagnant upper low continues to keep warm tropical air advecting over the region from the southeast Atlantic coast.
The thermal ridge will shift over the Northern Plains, allowing temperatures to approach record highs in the 90s.
A stagnant upper low currently over the southern CONUS is forecast to gradually lift northeast the next few days, which may brush extreme southeast Kansas with a few showers/storms Monday, but strong or severe storms are not expected.
339 AM EDT Sun May 11 2025 High pressure remains in control through Sunday night. The high then moves offshore on Monday into Monday night.
1236 AM EDT Sun May 11 2025 Low pressure exits across the Maritimes tonight. High pressure builds toward the region Sunday.
131 AM EDT Sun May 11 2025 - Fair and cool tonight followed by warmer and increasing chances for Rain by mid-week A Frost Advisory has been issued for the northern tier as cool high pressure builds in tonight with clear skies and winds decoupling later this evening. Good radiational cooling conditions should result in areas of frost across the north where lows will fall to the lower to mid 30s.
(This evening through Sunday Night) Scattered showers and isolated thunderstorms will continue developing across the area as heating interacts with lingering moisture and weak disturbances rotating behind the mid-upper low situated to our east. On Sunday, the upper low over ncntl LA retrogrades back closer to the Sabine. Rain will again taper off in the evening with lows Sunday night even a touch cooler in the upper 50s.
High pressure is in control over the region with ridging aloft in between an upper low near the Gulf and a trough off the Pacific coast. This pattern keeps sunny and pleasant conditions in place this weekend, as Sunday looks similar to today with temperatures a degree or two warmer.
Strong southerly winds ahead of a cold front in the Gulf has brought some deep tropical moisture over the area.
/NEW/ /Overnight through Monday/ Mid and high cloud cover has overspread the area tonight thanks to our slow moving upper low which is still meandering across the Arklatex. We'll have one more day with this upper low in our vicinity and with it will come an additional low chance for showers through the afternoon. More cloud cover is expected on Sunday and some areas east of I-35 may struggle to get out of the 60s for highs, while we'll be in the low/mid 70s elsewhere. Our upper low will begin to move eastward on Monday allowing mid level ridging to nose into the Southern Plains.
Cooler and showery weather today as a weak system passes through the area. Upper level ridging will start to build into the area midweek for the return of warm and dry conditions.
- Unsettled and breezy throughout the week with much cooler temperatures on tap.
(Today through Monday) Key Messages: - Near normal highs, below normal lows As the mid to upper level low over the Ark-La-Tex region begins to move northeastward today, negative vorticity advection will move into the region in its wake. Daytime highs today are expected to be near normal with slightly above normal temperatures returning tomorrow as an upper level ridge begins to move into the area and onshore flow returns.
A ridge of high pressure begins to build to the west on Monday which will finally begin push the stalled low pressure out to the west ushering in drier, warmer conditions for the upcoming work week. Temperatures today will be on the cooler side thanks to northerly winds, isolated showers, and mostly overcast skies.
301 AM EDT Sun May 11 2025 High pressure builds in for today through tomorrow, bringing pleasant weather to the region. Highs near 70F Today: Rising heights today as an upper-level ridge builds from the west. With subsidence aloft and high-pressure building in from the Great Lakes, skies will remain clear today. A dry cold front moves through this morning, keeping highs in the mid-60s to low 70s despite the sunshine. Lows in the 30s * Sunny and warmer Monday. Tonight: High pressure continues to build in tonight, allowing skies to remain clear. Tomorrow: The upper-level ridge axis shifts over the region with high pressure beginning to exit the region and move to the SE.
Nights are expected to be relatively cool (cooler than normal levels) and not as humid with overnight lows dipping into the upper 50s across the Northern Ranchlands to the mid 60s along the Rio Grande Valley. Daytime highs on Sunday will be seasonable with values in the upper 80s to lower 90s (80s along SPI and the beaches along the Lower Texas Coast). Subsiding winds and seas along the Lower Texas Coast will result in a Low Risk of rip currents on tonight through Sunday night.
(Today) Through the early morning hours, the surface and upper low will slowly retrograde west across the Gulf coast. Rain chances will slowly creep back up by midday increasing from east to west across the area as the low pressure system surges back to the east.
Yesterday's late-day cold front has allow temperatures to fall into the 40s this morning. High temperatures rebound nicely this afternoon in part because high pressure behind the cold front is located so far north; western Quebec. Return flow allows adequate warm air advection locally such that most places will see highs as least in the low 70s. In contrast, this east wind will allow lake-modified air to seep into Wauseon this afternoon, limiting their highs to right near 70; notably cooler than the 81 degree high observed yesterday. Cut-off low currently along the MS-AL line drifts northeast through Monday in response to a strengthening west-coast jet. The lingering influence of high pressure will allow the morning hours to be dry before the chance of showers increases in the afternoon from south to north.
407 AM EDT Sun May 11 2025 High pressure builds toward the region Sunday.
/Issued 1205 AM CDT Sun May 11 2025/ /Overnight through Monday/ Mid and high cloud cover has overspread the area tonight thanks to our slow moving upper low which is still meandering across the Arklatex. We'll have one more day with this upper low in our vicinity and with it will come an additional low chance for showers through the afternoon. More cloud cover is expected on Sunday and some areas east of I-35 may struggle to get out of the 60s for highs, while we'll be in the low/mid 70s elsewhere. Our upper low will begin to move eastward on Monday allowing mid level ridging to nose into the Southern Plains.
Similar to yesterday, the stagnant upper low over Louisiana is allowing for scattered showers and thunderstorms to develop over the area. The upper low finally makes a push eastward Sunday night into Monday which will allow for mostly clear skies over our area. This will keep low temperatures Sunday night on the cooler side, mainly in the 50s.
- Shower/thunderstorm chances (50-75%) increase Monday, with the higher chances east of Highway 65.
Still a few late day showers and storms most days mainly over the higher terrain today and Sunday.
(Today through Monday) An upper-level low over the Lower Mississippi River Valley is expected to shift towards the Ohio River Valley Monday. With southeasterly winds returning by Monday, high temperatures are expected to climb to the low to mid 90s Monday afternoon.
623 AM EDT Sun May 11 2025 High pressure will build over the eastern Great Lakes today, with full sunshine and slightly below average temperatures. The high will drift off the east coast by Monday, with southerly flow in its wake bringing much warmer air into the area to start the week.
538 AM MDT Sun May 11 2025 - Showers and thunderstorms capable of producing gusty outflow winds, small hail, and moderate rainfall rates will develop over the higher terrain this afternoon, mainly north of I-70.
649 AM CDT Sun May 11 2025 (Today through Monday) Upper low over western Louisiana early this morning with ridging off the Atlantic Coast and over the southern Rockies. At the surface, weak low pressure was centered near Jackson, with an occluded front to our north and east. Skies were mostly cloudy across the area at 3 AM CDT with temperatures generally in the lower and middle 60s, although there were a few upper 50s across northern portions of the area.
401 AM MDT Sun May 11 2025 - Showers and thunderstorms capable of producing gusty outflow winds, small hail, and moderate rainfall rates will develop over the higher terrain this afternoon, mainly north of I-70.
943 AM EDT Sun May 11 2025 High pressure builds toward the region Sunday.
547 AM CDT Sun May 11 2025 (Today) Through the early morning hours, the surface and upper low will slowly retrograde west across the Gulf coast. Rain chances will slowly creep back up by midday increasing from east to west across the area as the low pressure system surges back to the east.
Temperatures on land seem generally unfazed by current conditions with values already reaching into the lower to mid 80s similar to the last few days. Deep layer troughing across the northern Gulf coast continues to be the focus of weather in the short term. However, it looks to have some more moisture in the lower levels. Recent CAM runs align with this line of thinking as they are aiming for convection develop near the Lower Keys at a similar time to yesterday evening. Moderate to occasionally fresh southeast breezes will hold steady through today and tomorrow while the heart of the low meanders in place.
657 AM EDT Sun May 11 2025 High pressure will remain in place across the region today, providing dry conditions and above normal temperatures. An upper level low pressure system will lift north into the Ohio Valley through mid week, bringing occasional chances for showers and thunderstorms.
612 AM CDT Sun May 11 2025 (Today through Monday) An upper-level low over the Lower Mississippi River Valley is expected to shift towards the Ohio River Valley Monday. With southeasterly winds returning by Monday, high temperatures are expected to climb to the low to mid 90s Monday afternoon.
531 AM EDT Sun May 11 2025 High pressure builds in for today through tomorrow, bringing pleasant weather to the region. Highs near 70F Today: Rising heights today as an upper-level ridge builds from the west. With subsidence aloft and high-pressure building in from the Great Lakes, skies will remain clear today. A dry cold front moves through this morning, keeping highs in the mid-60s to low 70s despite the sunshine. Lows in the 30s * Sunny and warmer Monday. Tonight: High pressure continues to build in tonight, allowing skies to remain clear. Tomorrow: The upper-level ridge axis shifts over the region with high pressure beginning to exit the region and move to the SE.
648 AM EDT Sun May 11 2025 High pressure builds toward the region Sunday.
1040 AM EDT Sun May 11 2025 High pressure will build over the eastern Great Lakes this afternoon, with full sunshine and slightly below average temperatures. The high will drift southeast into Southern New England tonight, then off the east coast Monday, with southerly flow in its wake bringing much warmer air into the area to start the work week.
935 AM EDT Sun May 11 2025 High pressure builds toward the region Sunday.
713 AM EDT Sun May 11 2025 High pressure remains in control through Sunday night. The high then moves offshore on Monday into Monday night.
1046 AM EDT Sun May 11 2025 High pressure over the area through tonight will move offshore on Monday.
616 AM CDT Sun May 11 2025 (Today through Monday) Key Messages: - Near normal highs, below normal lows As the mid to upper level low over the Ark-La-Tex region begins to move northeastward today, negative vorticity advection will move into the region in its wake. Daytime highs today are expected to be near normal with slightly above normal temperatures returning tomorrow as an upper level ridge begins to move into the area and onshore flow returns.
909 AM EDT Sun May 11 2025 High pressure will remain in place across the region today, providing dry conditions and above normal temperatures. An upper level low pressure system will lift north into the Ohio Valley through mid week, bringing occasional chances for showers and thunderstorms.
329 AM MDT Sun May 11 2025 - Warmer Tomorrow with isolated to scattered afternoon showers and thunderstorms over and near the higher terrain. Current water vapor imagery and upper air analysis weak northerly flow aloft across south central and southeast Colorado, as upper level ridging across the Desert Southwest continues to build into western Colorado at this time.
The other thing of note is moderate to occasionally strong winds over the ridges east of the Cascades. At this tine, winds should remain below advisory levels, but a few gusts could exceed that this afternoon over the higher terrain.
A few afternoon high-based showers and storms expected over the higher terrain and adjacent plains today.
1223 PM EDT Sun May 11 2025 High pressure builds toward the region Sunday.
Overall shear values remain similar, but instability appears to be a bit more muted overall with weaker lapse rates and the low pulling away. Temperatures start the morning in the lower to middle 60's, only warming into the upper 70's to near 80, warmest east of the I-65 corridor.
(Tonight through Monday night) The mid to upper level low influencing the local weather over the past few days will continue to shift northeastward through the period with ridging building aloft behind it. Lows on Monday night will run around 10 degrees warmer, and in the mid 60s to low 70s.
134 PM PDT Sun May 11 2025 Warm conditions will continue today, but it is expected to be cooler than yesterday for most locations.
Deep layer troughing centered over the Mississippi River Valley will start to push a front in the Gulf towards Florida tonight. This wave looks like it will generally be focused over the Lower and Middle Keys, so have opted to split PoPs from the Upper Keys accordingly. As the troughing migrates north, the moisture corridor will slide over Florida with ample fuel for a few solid waves of showers and thunderstorms.
Ridge axis holds strong across the area today, as we remain between a low pressure system to our southeast in the Lower Mississippi Valley and another low pressure cell to our northwest in the northern Rockies ahead of the next upper trough.