Aikyam-Lab/Synoptic-Bench huggingface dataset:
751 AM EDT Sun Oct 1 2023 E/NE low level flow in place across the peninsula this morning beneath upper level troughing extending S/SW down the E Seaboard into the state. since last week will push south beginning later today in response to high pressure building over the NE U. A frontal boundary will move through the Gulf waters today into tonight with increasing northeast winds in its wake as high pressure builds in from the north.
1048 AM EDT Sun Oct 1 2023 Offshore low pressure will continue to track out into the western Atlantic, while high pressure builds in through mid week. The high will then give way to a frontal system at the end of the week. A highly amplified upper flow across the Lower 48 features a departing upper low off the East Coast and an upper ridge centered just east of the Mississippi River Valley. Out west, there is an upper low over the Great Basin. This will result in dry, warm conditions, which will start today as highs generally get up into the mid and upper 70s (a bit cooler across eastern Long Island).
609 AM CDT Sun Oct 1 2023 (Today through Monday) Current 500mb analysis places an expansive ridge centered across the Midwest/Great Lakes region with a deep trough across the western CONUS. Synoptic forcing for shower and storm development will be absent through the period with the aforementioned trough still far to our west, so any precipitation activity through the period will be driven simply by the presence of deep moisture and diurnal heating.
520 AM CDT Sun Oct 1 2023 High pressure will maintain its stronghold on the weather pattern through early this week.
943 AM EDT Sun Oct 1 2023 High pressure will remain over the region into mid week.
613 AM CDT Sun Oct 1 2023 (Today through Monday) High pressure will continue to build over the Eastern CONUS through Monday.
We will be bringing up a coastal flood advisory for tonight, but this first one will be the lower of the tide levels for the next few days and may only get over a few secondary isolated drives or roadways.
Warm and dry weather will persist as sfc and upper ridging continue to dominate.
Went a little warmer than the CONSALL guidance values for highs.
843 AM EDT Sun Oct 1 2023 High pressure will gradually build across the region through the weekend.
426 AM MDT Sun Oct 1 2023 A closed low over the Great Basin will bring strong south- southwest flow aloft to Colorado through tonight. Temperatures aloft cool slightly with the upper level low nearing the Rockies. This will lead to slightly cooler high temperatures today.
Surface analysis depicts a frontal boundary across central Florida, with a large high pressure area to the north of the front centered over the eastern Great Lakes. Aloft, a deep cyclone is spinning over the western Atlantic, with a sharp upstream ridge extending from the Gulf of Mexico northward to the western Great Lakes.
A longwave trough was centered over the western states during the morning hours. Dry conditions and warmer daytime temperatures are forecast as the current trough heads eastward.
318 AM PDT Sun Oct 1 2023 A low pressure system will bring another unseasonably cool day with isolated to scattered showers ending late in the day. Dry and warmer weather will begin Monday as the low pressure weakens.
In the east, valleys should reach the lower to middle 80s, with around 80 atop the plateaus and mountains.
745 AM EDT Sun Oct 1 2023 Offshore low pressure will continue to track out into the western Atlantic, while high pressure builds in through mid week. The high will then give way to a frontal system at the end of the week. Patchy dense fog still remains across portions of the lower Hudson and Connecticut River valleys. A highly amplified upper flow across the Lower 48 features a departing upper low off the East Coast and an upper ridge centered just east of the Mississippi River Valley. Out west, there is an upper low over the Great Basin. This will result in dry, warm conditions, which will start today as highs generally get up into the mid and upper 70s (a bit cooler across eastern Long Island).
534 AM MDT Sun Oct 1 2023 A closed low over the Great Basin will bring strong south- southwest flow aloft to Colorado through tonight. Temperatures aloft cool slightly with the upper level low nearing the Rockies. This will lead to slightly cooler high temperatures today.
Northerly flow on the back side of an upper trough will keep temperatures below seasonal levels for northern California and southern Oregon through the middle of the week.
653 AM EDT Sun Oct 1 2023 High pressure building over the area will bring dry conditions for much of the upcoming week.
945 AM EDT Sun Oct 1 2023 Offshore low pressure will continue to track out into the western Atlantic, while high pressure builds in through mid week. The high will then give way to a frontal system at the end of the week. A highly amplified upper flow across the Lower 48 features a departing upper low off the East Coast and an upper ridge centered just east of the Mississippi River Valley. Out west, there is an upper low over the Great Basin. This will result in dry, warm conditions, which will start today as highs generally get up into the mid and upper 70s (a bit cooler across eastern Long Island).
614 AM CDT Sun Oct 1 2023 (Today and tonight) As we go through the day today upper ridge to our east will continue to weaken.
Low pressure will slowly drift across the forecast area today, bringing areas of rain, numerous showers, and a few afternoon thunderstorms. A relative lull is expected tonight, although some showers may continue in some of our mountain areas, and localized fog may occur given all the low- level moisture in place. Isolated to scattered showers continue Monday with the low overhead, especially during the afternoon and evening across the ern highlands and Central Mntns, although a bit lighter and less in coverage compared to today.
944 AM EDT Sun Oct 1 2023 High pressure building over the area will bring dry conditions for much of the upcoming week.
648 AM CDT Sun Oct 1 2023 (Today and tonight) Southwest flow aloft will persist across the area in the short term, in advance of a large upper low that will remain quasi- stationary over the Great Basin region through tonight. However, a few showers and isolated storms may develop across southwest sections, mainly this afternoon but will keep POPs on the low side as latest CAM's are rather anemic. Temperatures will be slightly cooler today, but still above normal for this time of year, with afternoon highs in the upper 80s and lower 90s.
616 AM CDT Sun Oct 1 2023 Today through tonight: Overall, the forecast remains warm and dry for the near term given continued ridging over the forecast area. The low RH and high temperatures combined with continued dry weather will continue to raise fire weather danger, so we will keep the HWO graphic going.
957 AM EDT Sun Oct 1 2023 Outside of localized morning river valley, dry weather and seasonably warm temperature is expected through mid week under the influence of high pressure. Rain chances return late in the week with a crossing cold front. Dry weather and a sunny sky is expected today under the influence of high pressure and strong Ohio River Valley ridging. The ridge is expected to continue building across the Eastern CONUS through the forecast period, creating an Omega blocking pattern. Rising 1000mb to 500mb heights and warmer 850mb temperatures should continue the warming trend through mid week.
1010 AM EDT Sun Oct 1 2023 High pressure centered off to the north will continue to build into the region through the middle portion of the week. Slightly unsettled weather returns late week as a result of an upper trough moving through the Northeast/Mid-Atlantic. For today, mostly dry conditions as the cut-off low off the eastern seaboard continues to move further east, taking the lingering low-level moisture with it. High pressure will continue to creep further south and east into the area. Highs for this afternoon will rise into the upper 70s to maybe a few low 80s mainly east of the Blue Ridge. Height rises will be a common theme this week with the area of high pressure continuing to dig closer to overhead of the Mid-Atlantic region in the middle part of the workweek.
Upper low is centered over Nevada early this morning while NorCal is under northerly flow on its backside. Current temperatures are cooler compared to 24 hours ago and are mainly in the 30s and 40s in the mountains, and in the mid 50s to lower 60s across the Central Valley. The low is forecast to shift a little further to the south and east today allowing most of NorCal to dry out. Dry and milder weather returns this week as high pressure from the eastern Pacific begins to build into the region.
641 AM EDT Sun Oct 1 2023 High pressure will gradually build across the region through the weekend.
623 AM CDT Sun Oct 1 2023 (Today) It will be a warm and dry start to October with ridging aloft remaining in place.
High pressure will lead to a mostly sunny and seasonable day today after a chilly start. A weak Pacific frontal system will bring some showers Monday, especially for the higher terrain, along with breezy westerly winds in the Columbia Gorge.
A vertically stacked, cutoff low pressure system forming over the great basin has continued to bring enhanced northwesterly winds overnight. Such moist conditions have supported the formation of valley fog and kept temperatures warmer than NBM forecast: above 40 mostly across the board.
A stationary front has pushed slightly farther east than previously expected, leaving cooler conditions and diminished threat for thunderstorms into tonight.
1238 PM CDT Sun Oct 1 2023 Forecast remains on track with continued dry conditions due to high pressure being in the main influence over the area. Because of this, high temperatures have overperformed recently, therefore will keep with the low to mid 90s across much of the area consistent with yesterday's highs. Dry conditions and much warmer than normal temperatures are keeping conditions favorable for fire danger concerns, therefore a limited risk is highlighted across much of the area to reflect this potential. /SAS/ Today through tonight: Overall, the forecast remains warm and dry for the near term given continued ridging over the forecast area. The low RH and high temperatures combined with continued dry weather will continue to raise fire weather danger, so we will keep the HWO graphic going.
223 PM MDT Sun Oct 1 2023 A trough extending virtually the entire length of the West Coast is beginning to impact Wyoming, reminding us that the calendar has now flipped to October. This will make for a cooler day behind its associated cold front, with scattered showers and a few thunderstorms moving generally northward across the area. Given the cooler temperatures, some of this will fall as snow at higher elevations today, generally around or above 9,000 feet. A second low will pass through on Monday as the main trough axis approaches. Otherwise, temperatures will be a little cooler, with mountain snow again expected around 9,000 feet. Showers will continue Monday evening as the low pulls directly northeast across the state.
230 PM EDT Sun Oct 1 2023 Dry high pressure will dominate the region through the week. A cold front approaches late week with much cooler weather for the weekend. This afternoon: Similar to yesterday, fair weather continues across the region with high pressure centered to our north ridging into the Carolinas. Temperatures are rising through the upper 70s into the lower 80s with max temps expected in the lower to mid 80s. High temperatures in the low to mid 80s with lows in the upper 50s.
328 PM EDT Sun Oct 1 2023 High pressure will keep warm and dry conditions across the region into midweek.
346 PM EDT Sun Oct 1 2023 High pressure prevails through most of the week, keeping the area mostly dry with temperatures near normal. Moisture limited cold front will move across late week, bringing the biggest dose of fall seen so far this season. High pressure in the Ohio Valley through the period, moving east at a snail's pace. Locally this means a continued NE wind while a mid level ridge axis means downsloping flow and no cloudiness. High pressure aloft and at the surface maintains control, keeping the forecast dry.
- Rain and cooler weather still on track to arrive mid next. Another 90F day is expected Monday before cooler air slowly works its way into the region. A slow moving upper level trough works its way eastward across the CONUS. This looks to bring a substantial change to the pattern bringing cooler temperatures and chances for showers and thunderstorms.
A cold front will move through the area by the middle of the week, bringing precipitation chances and cooler temperatures. * A cold front works through the area by midweek, bringing the return of precipitation. * Cooler temperatures filter in behind the front, sticking around through the weekend. Omega blocking remains in place aloft with upper ridging anchored over the Midwest states. At the surface, high pressure is centered over the eastern Great Lakes Region, keeping things unseasonably warm, quiet, and dry here locally. Temperatures early this afternoon are sitting in the low to middle 80s and should peak in the middle to upper 80s.
(This afternoon through Monday Night) Upper ridging influences continue to bring fantastic weather to the mid state. The 30 year normal high temperature for BNA today is 79, so we're several degrees warmer than what we might typically see.
310 PM EDT Sun Oct 1 2023 Quiet and dry weather will continue in the short term as broad high pressure centered over Lake Erie influences the weather across the Ohio and Tennessee Valleys. - Cold front brings beneficial rainfall by the end of the week. The mid-level pattern across the CONUS will be initially characterized by an Omega Block as anomalous upper ridge over the central US is sandwiched by broad upper low over the Intermountain West and smaller occluded low over the North Atlantic. Nonetheless, the pattern is expected to become more progressive by midweek as the broad low over the west opens into a wave and merges with a Canadian trough moving to the east, causing the strongest positive height anomalies to retreat to the Great Lakes and eventually towards the Northeast US.
1218 PM CDT Sun Oct 1 2023 (Today and tonight) As we go through the day today upper ridge to our east will continue to weaken.
228 PM CDT Sun Oct 1 2023 Water vapor imagery shows amplified upper level ridging dominating the eastern half of the CONUS while a deep upper level trough sits over the Central Great Basin.
241 PM EDT Sun Oct 1 2023 High pressure will remain over the region into mid week.
(This afternoon through Monday) High pressure and east to northeasterly winds will remain through the short term. Dry air and a rain free forecast are expected, with temperatures several degrees above normal with highs today and Monday in the mid to upper 80s and lows tonight in the low to mid 60s.
220 PM MDT Sun Oct 1 2023 Satellite imagery shows a slowly evolving upper low over NV and southerly flow over our region. This feature along with associated diffluent flow ahead of the upper low, will provide increasing upward motion across our CWA through early evening. Once the initial wave ejects from the low and lifts thru central MT, it looks like we will see a lull in precip after midnight thru Monday morning. By Monday afternoon the upper low opens up and tracks northeast bringing us another period of ascent thru Monday night. There is also a chance of thunderstorms in our east by evening, perhaps even a few stronger storms in far southeast MT where there is some theta-e return (higher CAPE values 500-1000 J/kg) ahead of the approaching trof.
Forecast remains on track with continued dry conditions due to high pressure being in the main influence over the area. Because of this, high temperatures have overperformed recently, therefore will keep with the low to mid 90s across much of the area consistent with yesterday's highs. Dry conditions and much warmer than normal temperatures are keeping conditions favorable for fire danger concerns, therefore a limited risk is highlighted across much of the area to reflect this potential. /SAS/ Today through tonight: Overall, the forecast remains warm and dry for the near term given continued ridging over the forecast area. The low RH and high temperatures combined with continued dry weather will continue to raise fire weather danger, so we will keep the HWO graphic going.
A high amplitude upper level ridge will remain in place from Louisiana to the Great Lakes. Meanwhile at the surface a broad high pressure system will continue to camp over the Ohio Valley. Temperatures will rise into the lower 80s Monday afternoon with a few fair weather cumulus drifting overhead.
Some shower activity is then expected to develop during the early morning hours on Monday associated with the low-level jet.
1217 PM CDT Sun Oct 1 2023 High pressure will maintain its stronghold on the weather pattern through early this week.
152 PM EDT Sun Oct 1 2023 High pressure will remain over the region into mid week.
1208 PM CDT Sun Oct 1 2023 (Today and tonight) Southwest flow aloft will persist across the area in the short term, in advance of a large upper low that will remain quasi- stationary over the Great Basin region through tonight. However, a few showers and isolated storms may develop across southwest sections, mainly this afternoon but will keep POPs on the low side as latest CAM's are rather anemic. Temperatures will be slightly cooler today, but still above normal for this time of year, with afternoon highs in the upper 80s and lower 90s.
Hot temperatures continue early this week before a much cooler temperature regime settles in with chances for rain mid week and beyond. Building high pressure has largely brought very warm temperatures and sunshine to most of the CWA this afternoon.
There is medium confidence that some fog will linger into this afternoon, at least for the higher elevations with low stratus present otherwise.
1123 AM EDT Sun Oct 1 2023 Outside of localized morning river valley, dry weather and seasonably warm temperature is expected through mid week under the influence of high pressure. Rain chances return late in the week with a crossing cold front. Dry weather and a sunny sky is expected today under the influence of high pressure and strong Ohio River Valley ridging. The ridge is expected to continue building across the Eastern CONUS through the forecast period, creating an Omega blocking pattern. Rising 1000mb to 500mb heights and warmer 850mb temperatures should continue the warming trend through mid week.
Some weakening of the ridge aloft will occur tomorrow as a weak disturbance tops the ridge dips southward through the Ohio valley tomorrow. This will do little to lower temperatures locally however, and expect another day in the low 80s (north) to upper 80s (south) tomorrow.
(Now through Monday) The upper ridge axis just to our west will remain situated from eastern Texas/western Louisiana northward to the lower Great Lakes region.
305 PM CDT Sun Oct 1 2023 This evening through Tomorrow: We will see a continuation of hot and dry conditions as high pressure remains the predominant influence over the area. Lack of evapotranspiration thanks to dry soils, has recently allowed temperatures to rise to the low to mid 90s across the area.
1202 PM EDT Sun Oct 1 2023 Outside of localized morning river valley fog, dry weather and seasonably warm temperature is expected through mid week under the influence of high pressure. Rain chances return late in the week with a crossing cold front. Dry weather and a sunny sky is expected today under the influence of high pressure and strong Ohio River Valley ridging. The ridge is expected to continue building across the Eastern CONUS through the forecast period, creating an Omega blocking pattern. Rising 1000mb to 500mb heights and warmer 850mb temperatures should continue the warming trend through mid week.
252 PM EDT Sun Oct 1 2023 Offshore low pressure will continue to track out into the western Atlantic, while high pressure builds in through mid week. The high will then give way to a frontal system at the end of the week. High pressure will continue to provide dry conditions.
124 PM PDT Sun Oct 1 2023 The rest of today there is a 10-20% chance of thunderstorms along the Sierra south of Lake Tahoe with additional snow accumulation along the higher peaks and possibly at Sonora and Tioga passes. Monday and into the rest of the week will be warmer and drier following the cloudy, cool, showery conditions through today. Snow accumulation potential will be limited to the higher terrain, so keep an eye on road conditions near Tioga Pass southward to Mammoth Mountain. Sufficient cloud clearing may allow for some patches of freezing fog to develop, especially in the Sierra Valleys. * Much of the week will be rather dry along with a general warming trend as the low progresses eastward.
High pressure in the Pacific slides eastward and extends ridging through the area by Monday night.
This is about 10 degrees warmer than normal for the first of October.
Low pressure centered over northern Nevada this morning continues to bring wrap-around moisture, breezy winds, and notable rainfall for southwest Idaho and southeast Oregon. Drier conditions are forecast overnight as the low progresses eastward.
144 PM PDT Sun Oct 1 2023 A low pressure system will bring another unseasonably cool day today with isolated to scattered showers ending tonight. Dry and warmer weather will begin Monday as the low pressure weakens and lifts north.
Expecting a 20/30 percent chance of showers near the lower coast for Monday.
1022 AM CDT Sun Oct 1 2023 High pressure will maintain its stronghold on the weather pattern through early this week.
114 PM EDT Sun Oct 1 2023 High pressure maintains dry and sunny weather through midweek, with valley fog developing each night.
/44/ (Sunday through Monday) Persistence will continue through the short term period, as upper level ridging will remain anchored from ECntrl TX NE across the MS Valley and into the Great Lakes Region.
We could see a few highly isolated showers across the Northern Edwards Plateau but confidence is on the low side for this. Overnight lows will be slightly cooler than last night in the mid to upper 60s. Southwest flow aloft is expected to persist and even strengthen across the area as we move into Monday as the upper trough axis begins to drift eastward out of the Desert Southwest.
345 PM EDT Sun Oct 1 2023 High pressure maintains dry and sunny weather through midweek, with river valley fog developing each night.
At the surface, the Keys are on the southern periphery of an expansive area of high pressure centered over the Great Lakes region, which has maintained light to gentle easterly winds today.
934 AM PDT Sun Oct 1 2023 A low pressure system will bring another unseasonably cool day with isolated to scattered showers ending late in the day. Dry and warmer weather will begin Monday as the low pressure weakens.
132 PM MDT Sun Oct 1 2023 Overview: A broad cut-off low over the Intermountain West will slowly meander east toward the 4-Corners today and Monday. Strengthening SSW flow aloft over the central-southern Rockies will foster the development (and maintenance) of a lee cyclone over adjacent portions of the High Plains. Today-Tonight: Low-level southerly flow will modestly strengthen today -- in response to (relatively) more pronounced MSLP-H85 height falls /lee cyclogenesis/ in Colorado -- as the cut-off low over the Intermountain West meanders (ever-so-slightly) east toward the 4-Corners and upper level flow backs to the SSW and strengthens over the central-southern Rockies.
Upper level ridging will be anchored with its largely north/south oriented axis just to our west, from roughly the Great Lakes to lower Mississippi Valley.
1235 PM EDT Sun Oct 1 2023 High pressure will gradually build across the region through the weekend.