Aikyam-Lab/Synoptic-Bench huggingface dataset:
Hernandez Previous Discussion: /This Afternoon through Monday/ Warm and dry weather will continue as we end the weekend and start the new work week, with North and Central Texas remaining between a ridge to the west and a low pressure system across the eastern states. Scattered to broken high clouds on the back side of the low to the east may hold high temps down a degree or two this afternoon but it will still be warm with highs ranging from the middle 80s to the around 90. The region will lose most of the high clouds tonight, allowing temperatures to fall mainly into the lower and middle 60s. Full sun on Monday will push afternoon highs into the upper 80s to the lower 90s.
- Much cooler with strong northwest winds on Monday.
704 PM EDT Sun Sep 29 2024 (Rest of today through Monday) The remnants of Helene linger around the Tennessee River valley as high pressure tries to build in over Florida from the Atlantic. Rain chances will fall below climatological norms and the lower humidity will help drop heat index values a few degrees but not enough to make up for the southerly flow and abundant sunshine bringing 105 to 110 degree values across much of the area. The northern extent of the trough may not reach far enough north to introduce additional tropical moisture to the region.
549 PM CDT Sun Sep 29 2024 (This evening through Monday) Surface ridging is set to depart east of the region this evening ahead of light southerly winds veering westerly by daybreak. These light downslope breezes along with height rises east of a sprawling high over the Four Corners will shove highs into the lower 90s area wide for the final day of September.
631 PM EDT Sun Sep 29 2024 High pressure builds back into the area overnight and into Monday.
755 PM EDT Sun Sep 29 2024 An upper level low will drift northeastward from Kentucky to the Atlantic coast through early week, keeping unsettled weather and near to just above normal temperatures.
Heat index values will be in the lower to middle 90s, so stay hydrated and take frequent breaks.
Breezy conditions will continue tonight from east of Baker City to Ontario and along the lower Snake River Valley in SW Idaho.
Currently - A surface through lower level Atlantic ridge stretches westward across the Florida Peninsula and through the southeastern Gulf of Mexico. Deep layered ridging remains in control with 500 mb heights just above 591 hPa. Precipitable water is around 2 inches, however, there are is quite a bit dry air through the depth with a nose of warmer lower level air. Short Term Update - The surface through lower level ridge will pivot slightly northward through the overnight period as the weak wave in the Caribbean pushes further westward. Expect overnight lows in the lower to mid 80s with dew points remaining in the upper 70s. An Atlantic ridge stretching across Florida will maintain light to gentle east to southeasterly breezes across Keys waters through the overnight period.
525 PM MDT Sun Sep 29 2024 A Pacific cold front will continue to move from west to east through Central MT this evening. Cooler air will move in behind the cold front, with gusty winds diminishing by Monday morning. Afternoon highs on Monday will be about 25 degrees cooler than today.
935 PM EDT Sun Sep 29 2024 High pressure builds back into the area overnight and into Monday.
729 PM MDT Sun Sep 29 2024 A Pacific cold front will continue to move from west to east through Central MT this evening. Cooler air will move in behind the cold front, with gusty winds diminishing by Monday morning. Afternoon highs on Monday will be about 25 degrees cooler than today.
622 PM CDT Sun Sep 29 2024 Cloudy, drizzly, and cool conditions will continue on Monday as an upper level low pressure system slowly pulls away.
919 PM EDT Sun Sep 29 2024 An upper level low will propagate eastward the next several days, bringing occasional showers and possible thunderstorms. A cold front will move through midweek with high pressure building thereafter.
929 PM EDT Sun Sep 29 2024 - Dry weather is expected through Monday, but rain chances return Monday night when the next cold front enters the Great Lakes region.
817 PM MDT Sun Sep 29 2024 - A cold front this evening will bring cooler conditions with gusty northwest winds into Monday.
624 PM CDT Sun Sep 29 2024 (Tonight through Monday night) An elongated upper-level trough extending from the Ohio River Valley into Southern Texas looks to shift further east through the period. Weak upper-level ridging looks to build int Southern Texas by Monday afternoon. This pattern will continue to support fair weather across the region, with overnight low temperatures in the upper 60 to low 70s and afternoon high temperatures in the low to mid 90s at the surface, dry air looks to remain in place through the period, keeping heat indices close to the actual temperature.
Models do show a weak disturbance aloft traversing the area this afternoon ahead of Monday's cold front. A trough passing to the north of the CWA on Monday will send a strong cold front down into eastern Wyoming and western Nebraska. This cold front will be dry, so no precipitation chances are expected on Monday.
625 PM EDT Sun Sep 29 2024 An upper level low will propagate eastward the next several days, bringing occasional showers and possible thunderstorms. A cold front will move through midweek with high pressure building thereafter. Localized higher rainfall totals overnight of 2-4" is certainly not out of the question, especially across the eastern slopes of the Blue Ridge Mountains in central VA.
Evening satellite imagery still showed circulation around a closed low spinning between the Tennessee and Ohio river valleys that was helping maintain cloud cover over the northern half of our CWA. Expect overnight lows to dip into the low-mid 60s.
211 PM PDT Sun Sep 29 2024 A strong cold front will continue to bring gusty winds through this afternoon.
737 PM EDT Sun Sep 29 2024 High pressure builds back into the area overnight and into Monday.
552 PM CDT Sun Sep 29 2024 (This afternoon through Monday night) WV imagery shows the upper ridge centered over northeast Arizona this afternoon, resulting in meridional or even northeast flow aloft this afternoon over West Texas and Southeast New Mexico. As such, the short term continues to remain dry, but with mild temperatures due to the displaced nature of the ridge. Monday, the west coast trough will nudging the ridge a little farther east, increasing thicknesses over the region and adding a couple of degrees to today's highs.
The main concern for tonight into early tomorrow morning is the low cloud ceilings and potential for fog.
558 PM CDT Sun Sep 29 2024 (This evening through Monday) Expect quiet and dry weather the next 24 hours as upper level ridging dominates. Upper level trough and the remnants of Helene remain off to the east, with a ridge of high pressure aloft continues from California east into Texas.
A weak and dry cold front will cross northern Utah and southwest Wyoming tonight into Monday, bringing some brief relief from the hot temperatures to northern Utah.
625 PM CDT Sun Sep 29 2024 (Rest of today through Monday) Low pressure and remnant moisture still hangs over Middle Tennessee and surrounding areas today. Once again we may have a few showers in the afternoon before the low pressure center finally crawls away to the northeast.
PWB Cloudy, drizzly, and cool conditions will continue on Monday as an upper level low pressure system slowly pulls away.
- Unseasonably hot Monday afternoon in the lower 90s.
1046 PM MDT Sun Sep 29 2024 - A cold front this evening will bring cooler conditions with gusty northwest winds into Monday.
Upper level low pressure will result in isolated light afternoon showers today, mainly across West Tennessee.
Outside of this low rain chance, a mix of sun and clouds is anticipated with afternoon highs in the mid to upper 70s.
Warm and muggy tonight, with overnight lows in the low to mid 70s.
Today: Early this morning, the core of the upper low is parked over the TN Valley into the Appalachians, the sfc reflection will slowly wash out. The southwestern trough axis is progged to gradually pinch off from the core of the low over the Appalachians. A Significant was added for the highest HREF dense fog probs >50% in the Hwy 82 corridor from a line east of Leflore to along & north of a line from Holmes to Noxubee County. Tonight: As the trough axis pinches off, continued ascent will persist, but moisture won't be as prevalent.
345 AM EDT Mon Sep 30 2024 Weak low pressure will track east across the region today, then move just offshore tonight.
Upper level ridging over the SW Atlantic. Temperatures today and tomorrow will likely be the highest for the week in the low to mid 90s.
The remnant low pressure will continue to move east through the day, bringing isolated to scattered chances for light rain. Tonight, troughing will finally move east of the region, allowing for clouds to thin. Low temperatures are expected to fall into the low-mid 60s.
1230 AM CDT Mon Sep 30 2024 (Tonight through Monday night) An elongated upper-level trough extending from the Ohio River Valley into Southern Texas looks to shift further east through the period. Weak upper-level ridging looks to build int Southern Texas by Monday afternoon. This pattern will continue to support fair weather across the region, with overnight low temperatures in the upper 60 to low 70s and afternoon high temperatures in the low to mid 90s at the surface, dry air looks to remain in place through the period, keeping heat indices close to the actual temperature.
307 AM CDT Mon Sep 30 2024 - Critical fire weather conditions expected this afternoon in western and central MN as gusty winds and dry air will arrive following a cold front.
1210 AM CDT Mon Sep 30 2024 (This evening through Monday) Surface ridging is set to depart east of the region this evening ahead of light southerly winds veering westerly by daybreak. These light downslope breezes along with height rises east of a sprawling high over the Four Corners will shove highs into the lower 90s area wide for the final day of September.
1239 AM EDT Mon Sep 30 2024 A large area of low pressure will slowly drift east out of the Ohio Valley today leading to another round of scattered light showers, mainly across the mountains.
Water vapor imagery highlights a mean-layer ridge over the Western Caribbean, the southeastern Gulf, and the Bahamas. Meanwhile, there is a TUTT cell in the Central Caribbean and a lazy, positively tilted trough axis in the southern Plains.
Scattered shower activity will be present today associated with the low pressure system.
305 AM CDT Mon Sep 30 2024 Evening satellite imagery still showed circulation around a closed low spinning between the Tennessee and Ohio river valleys that was helping maintain cloud cover over the northern half of our CWA. Expect overnight lows to dip into the low-mid 60s.
A Pacific cold front will continue to move from west to east through Central MT this evening. Cooler air will move in behind the cold front, with gusty winds diminishing by Monday morning. Afternoon highs on Monday will be about 25 degrees cooler than today.
1235 AM CDT Mon Sep 30 2024 (This afternoon through Monday night) WV imagery shows the upper ridge centered over northeast Arizona this afternoon, resulting in meridional or even northeast flow aloft this afternoon over West Texas and Southeast New Mexico. As such, the short term continues to remain dry, but with mild temperatures due to the displaced nature of the ridge. Monday, the west coast trough will nudging the ridge a little farther east, increasing thicknesses over the region and adding a couple of degrees to today's highs.
340 AM EDT Mon Sep 30 2024 Weak low pressure will track east across the region today, then move just offshore tonight.
- A return to cooler, more seasonable weather is forecast for the first few days of October behind a cold front. Today: Another unseasonably warm day is forecast with highs in the low to mid 80s for the last day of September. Ridging aloft and high pressure at the surface over the Mid to Upper Mississippi Valley will keep the local area dry as well.
Due to a passing front/trough on Sunday, we'll see around a 4 degree drop in today's high temperatures.
1145 PM CDT Sun Sep 29 2024 (This evening through Monday night) Upper low over the Appalachians should open up and begin to lift northeastward Monday, but the overall trough axis remains pretty anchored through the short term resulting in a little change to the local weather.
223 AM CDT Mon Sep 30 2024 - Warm above normal temperatures will affect the region today - A couple cold fronts will move across Kansas this week and bring some relief from the warmer temperatures for a couple days but limited moisture will result in no precipitation The dry/quiet weather pattern will continue across the central plains for several more days, as a predominately upper zonal flow regime persists across the northern plains with a few upper waves racing eastward and lack of moisture streaming back into Kansas.
(Today and tonight) Upper level low pressure holds over much of the eastern U. As the low lifts to the north, ridging over the southwest Atlantic expands slightly towards the U. Highs for today will be in the upper 80s to low 90s, with heat index values in the low to mid 90s.
A deep trough moving across southern Canada and the northern US will result in surface cyclogenesis and pressure troughing in lee of the Rockies. Upper ridging will build over the western US bringing rising heights today allowing temperatures to be a few degrees warmer. Mid-level moisture rotating around the ridge along with low level upslope flow will likely allow isolated to scattered convection in the higher terrain of eastern New Mexico but is unlikely to reach the region.
/19/ (This evening through Monday Night) As the upper level low over the eastern Ohio Valley continues to open up into a positively tilted trough with an axis oriented parallel to the Appalachians, a tilted area of ridging will advance eastward from the Intermountain West, helping to maintain our seasonable to slightly above average temperatures, as well as disrupting our northerly winds, which will become somewhat more easterly as the forecast period continues. Temperatures will largely be on autopilot with a slight warming trend as the upper level ridging attempts to assert its influence.
The cold front which brought all the gusty winds yesterday has moved well east of the region which will leave us with a sunny and pleasant day. Cooler air has settled into the region behind the front which will result in high temperatures around 60.
943 PM MDT Sun Sep 29 2024 - A cold front this evening will bring cooler conditions with gusty northwest winds into Monday.
Forecast lows in the lower 60s will also be 2-3 degrees below crossover temps, which adds to the potential for dense fog. Afternoon satellite imagery shows the remnant circulation of Helene along with a large upper level low spinning across the southern Ohio Valley. Overnight lows will average in the upper 50s to the lower 60s. Highs on the day should be a bit warmer with most places in the 70-75 degree range.
308 AM EDT Mon Sep 30 2024 High pressure over eastern Canada extending into New England will continue dry weather through mid week.
Some decreasing cloud cover today will bring warmer temperatures in the 70s. There is some dense fog near Huntsville where the higher clouds cleared out. Rain chances will be much lower tonight as the low finally gets farther away. Temps will be warmer today with highs in the 70s as cloud cover decreases this afternoon.
446 AM EDT Mon Sep 30 2024 High pressure will remain over the area into early this week.
205 AM EDT Mon Sep 30 2024 High pressure builds back into the area during the day today.
Today will be much cooler behind the cold front, with forecast highs 15 to 20 degrees cooler than observed temperatures yesterday.
139 AM EDT Mon Sep 30 2024 (Rest of today through Monday) The remnants of Helene linger around the Tennessee River valley as high pressure tries to build in over Florida from the Atlantic. Rain chances will fall below climatological norms and the lower humidity will help drop heat index values a few degrees but not enough to make up for the southerly flow and abundant sunshine bringing 105 to 110 degree values across much of the area. The northern extent of the trough may not reach far enough north to introduce additional tropical moisture to the region.
1232 AM CDT Mon Sep 30 2024 (This evening through Monday) Expect quiet and dry weather the next 24 hours as upper level ridging dominates. Upper level trough and the remnants of Helene remain off to the east, with a ridge of high pressure aloft continues from California east into Texas.
- A brief shot of cool air will spill into central Illinois behind a departing cold front on Tuesday.
653 AM EDT Mon Sep 30 2024 High pressure across southeast Canada will bring fair weather with slightly above normal temperatures through Tuesday.
Mild with bit of easterly winds today and Tuesday, as high pressure remains over the region.
642 AM CDT Mon Sep 30 2024 (Monday through Tuesday) A lingering upper-low across the Ohio River Valley to maintain northerly flow across the ArkLaTex through tonight, An upper- level ridging across the majority of the southwest CONUS to build across the ArkLaTex on Tuesday. At the surface, broad high pressure will maintain light north to northeast winds today into Tuesday.
(Today through Tuesday) A trough aloft pulls away over an amorphous pressure pattern at the surface today, then ridging aloft builds over our area while a surge of reinforcing high pressure at the surface moves into our area on Tuesday. The only impact from the change are breezy/gusty winds on Tuesday which in combination with the low humidities and drying vegetation may lead to locally elevated fire weather conditions.
An upper level low will continue to rotate northeastward through the Virginias today, opening into a trough stretching to the southwest through the Lower Mississippi River Valley tonight. A shower or two is possible this afternoon under the stretched trough aloft, but chances are too low to include rain chances at any location. The trough shifts eastward Tuesday, with deep layer northerly flow developing as high pressure shifts across the Central Plains.
The exact northward extent of shower activity will depend on how quickly a cold front pushes across the Mid-South overnight. Much cooler conditions return Sunday night with lows ranging from the low to upper 30s.
The showers/storms will increase across the area overnight into Sunday morning, with the bulk of the activity generally along and south of the Highway 82 corridor. 25 inches along the Highway 84 corridor. Lows tonight will fall into the mid to upper 50s, with highs on Sunday in the low to mid 60s.
155 AM MDT Sun Mar 17 2024 Northerly flow aloft over Montana into southern Canada, with a strong upper ridge over British Columbia. This flow sent a weak cold front through eastern zones Saturday afternoon and evening, which will result in a cooler day today.
Only adjustments needed at this time was the correction of the hourlies to match latest trend given some rain cooling supporting a few climate forecast sites a few degrees cooler than what the current forecast advertises. Thankfully, this SW flow will begin to wane Sunday afternoon, allowing for the deeper trough and 850mb front to the north to drop south. In turn, rain chances will exit the region, and cooler temperatures will work into the region to start the new workweek.
A separate wave tracking ESE within the amplifying larger scale eastern CONUS trough will maintain widespread cloud cover overnight while ushering a cold front across the area overnight through early Sunday. (Tomorrow through Saturday) Clouds clear on Sunday with breezy northerly winds and cooler temps area wide. Winds will begin to decrease Sunday night and excellent radiation cooling conditions will allow for widespread low temps into the lower 30s with a hard freeze possible across far NE OK into far NW AR.
429 AM EDT Sun Mar 17 2024 A weak cold front will move through early this morning with rain showers and a few snow showers at high elevations.
Breezy at times with elevated fire weather conditions through Mon/Tue -Cooler with increasing chances for precipitation for the last half of the week Western CONUS ridge will remain in place through mid week, with the Dakotas on the eastern edge of the ridge. Mean upper trough over central Canada has and will continue to support cool fronts into the FA, with one currently progressing through the area, supporting breezy winds.
201 AM MDT Sun Mar 17 2024 - Tranquil weather through the middle of the week, with warmer temperatures. Today will see temperatures similar to Saturday as partly cloudy skies and light northerly flow continue to draw slightly cooler air southward from Canada. The core of the warmer air aloft arrives tomorrow, with H7 temperatures +1 to +3C, which will translate to sfc temperatures soaring into the 60s east of the divide. Areas west of the divide will push into the lower 50s, but are still hindered by remaining snowpack.
Any snow accumulations will be light and confined to the higher peaks. Snow levels will be around 2500 ft so any accumulations will be limited to the highest terrain. West to southwest flow will limit orographic showers to the far northern Greens where there will be some snow showers in the highest elevations. Highs in the broad valleys will be in the upper 40s to around 50 but with the steep lapse rates, highs in the mountains will only be a few degrees above freezing. Any convection should dissipate overnight but with temperatures dropping close to freezing, any lingering showers could fall as snow anywhere.
(This afternoon through Sunday) High pressure has built in behind yesterday's frontal boundary. A wave of low pressure will move east along the stalled front and bring chances for precipitation to much of north and central GA tomorrow into tomorrow night. High pressure and dry conditions will persist through tonight. Since the low remains across the FL panhandle/far S GA, the highest chances rain remain south of the Interstate 20 corridor. However, if the track of the low shifts a bit northward, so will the axis of heavier QPF/rain chances.
The forecast will be dry by tomorrow morning with a dry cold front approaching Middle TN. This will bring cooler highs tomorrow in the 50s to near 60s. A dry cold front will move through our area late tonight bringing in a reinforcing drier airmass out of south central Canada. Look for highs to be slightly cooler on Sunday and closer to seasonal normal values ranging in the upper 50s to lower 60s.
However, a large amplitude trough in the polar jet digging across the U. S Central & Northern Plains through the Midwest & Upper Midwest Regions will push a cold front through the Central Plains this evening and across our area for tonight. Not expected to be windy behind this cold front with a north wind around 10 mph.
Current temperatures are in the lower to upper 50s. With increased moisture and cloud cover, tonight's lows will likely not drop cooler than the upper 40s to lower 50s.
246 AM MDT Sun Mar 17 2024 Synoptic Setup: Forecast begins with a trough dropping down from the Hudson Bay into the Upper Mississippi Valley and a ridge running north from California through the PCNW, BC, and cresting over northern Alberta and southern Northwest Territories.
High pressure and atmospheric stability will continue to bring VFR conditions and generally light winds across the majority of northern California and southern Oregon through the TAF period.
Temperatures have been a degree or two warmer than the forecast but still think overnight lows are in good shape. Dry and pleasant for most tomorrow as moisture starved cold front crosses the region Sunday morning. Despite the cold front passing through overnight, the main cold air advection will hold on for one more day, with 850 mb temperatures not falling below 0C until after midnight Sunday night.
(Today) Cold front, currently located just south of I-44, will push south of the Red River shortly after sunrise.