Aikyam-Lab/Synoptic-Bench huggingface dataset:
621 PM CDT Sun Sep 15 2019 After morning rain dissipated, partly to mostly sunny skies and warmer air prevailed over central and southeast Illinois, this afternoon. High pressure building in from the west later tonight, will allow winds to go light/calm. A deepening west coast longwave trough will allow upper level ridging to strengthen from the lower Mississippi Valley, northeast into the Great Lakes for the first half of the week. However with east to southeast surface flow off high pressure to the northeast, dewpoint will stay tolerable in the 60s, keeping peak heat indices within a few degrees of max temps.
/Issued 243 PM CDT Sun Sep 15 2019/ High pressure will slowly shift east over the Arkansas area.
913 PM EDT Sun Sep 15 2019 Upper and surface ridging will remain across the region overnight with mostly clear sky and calm winds. Chattanooga Airport, TN 66 96 69 96 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 64 94 68 93 / 0 0 0 0 Oak Ridge, TN 63 94 68 93 / 0 0 10 0 Tri Cities Airport, TN 55 90 62 88 / 0 0 10 10.
605 PM CDT Sun Sep 15 2019 An Upper Level ridge will continue to move eastward Monday.
An upper level trough centered over eastern Arizona will slowly lift northeast across Colorado tonight and Monday. This will also result in cooler highs for Monday.
808 PM EDT Sun Sep 15 2019 A ridge of high pressure over Pennsylvania will slide east to the Mid Atlantic Piedmont tonight. Clouds will increase across the state late today and tonight as an area of low pressure and its preceding warm front moves out of the midwest and crosses Pennsylvania Monday night.
735 PM EDT Sun Sep 15 2019 A weak cold front will sink south through the region late tonight and Monday. High pressure will return to the area Monday night through the rest of the week. Another cold front will move into the region by the weekend.
Low temperatures will range from the lower 70s inland to the middle to upper 70s near the coast.
931 PM EDT Sun Sep 15 2019 Weak low pressure will slide east out of the Great Lakes bringing clouds and showers to the area tonight. High pressure will build back into the region on Monday with a return to dry weather. High pressure and drier air begin a push south and a dry northeast flow develops Monday. Expect cool and dry weather Monday night under high pressure.
602 PM EDT Sun Sep 15 2019 A ridge of high pressure over Pennsylvania will slide east to the Mid Atlantic Piedmont tonight. Clouds will increase across the state late today and tonight as an area of low pressure and its preceding warm front moves out of the midwest and crosses Pennsylvania Monday night.
/issued 1028 PM CDT Sun Sep 15 2019/ High pressure continues to dominate the area with not much change in the overall pattern expected for the foreseeable future. Temperatures are in the low 70s to mid 80s. Highs tomorrow will once again reach the low 90s to upper 90s. /issued 245 PM CDT Sun Sep 15 2019/ Skies remain mostly sunny across the Mid-South this afternoon with temperatures in the low to mid 90s. An upper level ridge continues to cover much of the southern U. This ridge will start to expand northward and become more centered over the lower Mississippi Valley.
1145 PM CDT Sun Sep 15 2019 Considerable mid-level ridging is forecast over the next 24 hr from the mid MS Valley into central Canada, downstream from a longer wavelength trough moving onto the West Coast. Otherwise, the the main weather story will be the continuation of warm and humid conditions beneath the building mid-level ridge. Highs on Monday and Tuesday will be in the upper 80s to lower 90s with afternoon heat indices in the lower to mid 90s.
1253 AM EDT Mon Sep 16 2019 A passing shower is possible today as a weak cold front crosses the region. A passing shower cannot be ruled out today as a weak cold front crosses the region. There will be little to no upper level support with the surface boundary and most, if not all, of the deeper moisture lies behind it in the cooler air. Ridging will remain over the Ohio River Valley region into the weekend. VFR is then anticipated for the rest of the week as high pressure builds.
409 AM EDT Mon Sep 16 2019 Clouds will linger through a good part of today before a high pressure area brings clearing skies starting from the northwest this afternoon.
212 AM EDT Mon Sep 16 2019 A weak cold front will sink south through the region late tonight and Monday. High pressure will return to the area Monday night through the rest of the week. Another cold front will move into the region by the weekend.
256 AM EDT Mon Sep 16 2019 Extensive stratus will remain entrenched over Southeast Michigan for much of today as the amplifying upstream ridge only slowly edges eastward.
238 AM MDT Mon Sep 16 2019 Current surface map places trof across the western Dakotas. Deep low level mixing behind surface trof will limit MLCAPE across northeast Wyoming and far western South Dakota.
1236 AM CDT Mon Sep 16 2019 An Upper Level ridge will continue to move eastward Monday.
354 AM EDT Mon Sep 16 2019 A passing shower is possible today as a weak cold front crosses the region. A passing shower cannot be ruled out today as a weak cold front crosses the region. There will be little to no upper level support with the surface boundary and most, if not all, of the deeper moisture lies behind it in the cooler air. Ridging will remain over the Ohio River Valley region into the weekend. VFR is then anticipated for the rest of the week as high pressure builds.
310 AM EDT Mon Sep 16 2019 High pressure will build into the region and control our weather all week with dry weather expected and partly to mostly sunny skies.
A leeside trough across eastern Colorado will keep breezy south winds overnight and gusty winds during the heating hours of the day. Monday morning low temperatures will be mild in the mid to upper 60s across the CWA with afternoon highs swelling once again into the low 90s. Winds will be gusty up to 30-35mph for much of the CWA due to the aforementioned leeside trough from mid morning until sunset due to the strong mixing of the daytime heating.
But most of the higher resolution models show that while the band may weaken later tonight, it should reorganize itself a bit when it reaches extreme eastern WA on Monday.
358 AM CDT Mon Sep 16 2019 Hot and humid conditions underneath a ridge of high pressure will continue Today and Tuesday before the ridge shifts southeast for the second half of the week. The result will be high temps in the low to upper 90s for most locations Today and Tuesday with slightly cooler.
Continue to expect hot conditions until the cold front moves through Tuesday, bringing back chances for showers and thunderstorms. Bigelbach MORNING DISCUSSION: The heat will be back on across the region the next two days before a cold front slams the door on the warmth by midweek.
130 AM EDT Mon Sep 16 2019 Weak cold front crosses today with isolated showers possible. High pressure and upper ridge dominate latter half of the week. A fairly weak cold front will sink through today and tonight. Still, opted to go a bit below guidance across the east using a blend of the HRRR and WRFARW which often do the better on the lowest dewpoint days. Models indicate high pressure, at the surface and aloft, will build back into the region through the period. High pressure at the surface and aloft will remain in control for the remainder of the week with dry weather and daytime temperatures running well above normal. Could get an isolated shower as a weak cold front drifts through.
Upper low continues to move slowly toward the Pacific northwest. In response the cold front is very slow to move across the forecast area this evening. Behind the front and under the cold upper low expect to have an increase in showers tomorrow. However satellite indicates more instability with the low currently offshore so isolated afternoon thunderstorms are possible. Much cooler as 850mb temperatures fall to near 7C. Another upper low brings additional rain and cool temps Tue and Wed. Precipitation afterwards will be scattered showers associated with the upper low.
1144 PM CDT Sun Sep 15 2019 Quiet weather is expected to continue for this period with an upper level ridge axis moving east through the region. Well above normal temperatures will continue with highs in the low/mid 90s. A strong upper level ridge will keep the area dry for several more days with well above normal temperatures. A weakening sfc front tries to edge into northern MO/northeast KS by Thu morning but it withers underneath the ridging aloft.
235 AM CDT Mon Sep 16 2019 Another hot and dry day is on tap as a strong upper level ridge remains centered over the Mid-Mississippi Valley. Highs will once again be in the lower to middle 90s over most locations.
This could cause some impacts on travel and also create uncertainty in the high temperatures for Tuesday.
307 AM CDT Mon Sep 16 2019 Upper-level ridging encompasses the middle of the county and will persist across the middle of the country through the middle of the week.
High pressure will generally be the predominant weather feature throughout the forecast period, resulting in mainly dry conditions with just a few exceptions. The first exception will be tonight when showers and thunderstorms could dip into the northern half of central Indiana again as a cold front sags into the area.
Moisture will remain in place across northern Arizona on Monday as a low pressure system approaches.
Based on upstream observations, will lean toward the warmer MAV guidance for highs, except near the bay and lake where winds are expected to turn easterly during the day. Highs should be mainly in the 70s, cooler near Lake Michigan.
331 AM CDT Mon Sep 16 2019 Deep PACNW trough to our west continues to move on shore this morning as high pressure aloft holds to our east resulting in continued SW flow over the CWFA. SW flow will remain in tact tomorrow as the Pacific trough tracks across the Great Basin and a secondary Pacific storm develops in its wake.
235 AM EDT Mon Sep 16 2019 Weak high pressure will extend across the southern middle Atlantic states today. A backdoor cold front will push through the region again Tuesday.
135 AM EDT Mon Sep 16 2019 Weak high pressure will extend across the southern middle Atlantic states today. A backdoor cold front will push through the region again Tuesday.
1029 PM CDT Sun Sep 15 2019 A deepening warm sector underneath a building ridge over the central CONUS will maintain hot and muggy conditions through the early to mid-week, with a slight improvement expected by the late week.
H5 ridging continues building into the region this afternoon with mostly clear skies observed across much of area. We should see temperatures reach the lower 80s this afternoon with lows tonight falling into the upper 50s to lower 60s. The low level jet actually looks to intensify during the day and hold up into Tuesday night as well.
1242 AM CDT Mon Sep 16 2019 Light and variable winds and high pressure should keep VFR conditions dominant through this TAF period. Tonight Through Tuesday An upper level ridge continues over Arkansas stretching north into the Plains. The ridge will strengthen over the central U. A cold front may edge into northeast Arkansas Tuesday but no rain is anticipated at this time.
1028 PM CDT Sun Sep 15 2019 High pressure continues to dominate the area with not much change in the overall pattern expected for the foreseeable future. Temperatures are in the low 70s to mid 80s. Highs tomorrow will once again reach the low 90s to upper 90s. /issued 245 PM CDT Sun Sep 15 2019/ Skies remain mostly sunny across the Mid-South this afternoon with temperatures in the low to mid 90s. An upper level ridge continues to cover much of the southern U. This ridge will start to expand northward and become more centered over the lower Mississippi Valley.
1116 PM CDT Sun Sep 15 2019 It will be a warmer night across the area with a southerly flow and an upper level ridge situated over the region.
356 AM EDT Mon Sep 16 2019 A quiet forecast looks to continue this short term period as high pressure will keep rain chances near zero through tonight. A weak cold front will move into N GA early Tuesday and become stationary.
337 AM CDT Mon Sep 16 2019 An energetic trough continues to amplify to our west as our area remains on the western periphery of an upper level ridge centered over the upper midwest. This pattern will allow warm temperatures and moisture to continue increasing across the region as a surface warm front lifts north across the state through the day. Thus, an even warmer day looks to be on tap this Monday afternoon with widespread highs in the mid 80s to mid 90s. With temperatures normally in the lower 70s this time of year, these highs will approach 20 degrees above normal in some locations and some record highs will be possible.
Mid level ridging over the mid-Mississippi Valley will dominate our weather the next several days and temps will steadily climb in response to the middle 90s by Monday and upper 90's by Tuesday. 12Z model guidance indicates that very pronounced/amplified upper ridge will remain just to our west while retrograding slowly westward in response to deepening trough over the western CONUS and low pressure associated with Humberto which is forecast to intensify as it moves slowly east well offshore of the Carolina coasts.
254 AM CDT Mon Sep 16 2019 (Today and Tonight) An upper level ridge centered across the lower Mississippi Valley will continue to dominate the weather across West Central Texas, resulting in hot and dry conditions.
316 AM CDT Mon Sep 16 2019 Hot and humid conditions are expected into the middle of the week, but otherwise fair weather as high pressure builds across the region. An expansive area of high pressure is in place across the Midwest and Great Lakes. A strong upper ridge will be centered along the Mississippi River Valley or Great Lakes region through the latter half of the week, providing primarily dry weather along with hot and humid conditions.
Midweek, a front will push southward from the Mid-Atlantic into the forecast area behind the departing offshore cyclone. A dry and cooler airmass will build into the region late week behind the front. Temperatures will warm back up for the weekend as upper level ridging builds over the area. Tranquil weather expected over the forecast area today and tonight with high pressure in place. Temperatures will be a bit warmer today with highs in the lower to mid 90s.
232 AM MDT Mon Sep 16 2019 Upper ridge moves to the east today. SW flow ahead of an upper trough will continue to keep temperatures much warmer than normal today with highs in the lower 90s in most areas with dry weather and clear to partly cloudy skies. The low will drift northeast into southern Saskatchewan Tuesday morning and bring a cold front across eastern Montana. Meanwhile, an upper trough moves through eastern Montana Tuesday afternoon and evening. The early afternoon timing of the cold front could limit severe potential across that area.
Upper ridge will remain firmly planted over the lower Mississippi Valley today so expecting highs similar to yesterday across the area.
As such, dewpoints in the low to mid 60s & temperatures rising into the mid to upper 90s will foster RH values as low as ~30% this afternoon. With the amplifying deep-layer ridge moving eastward (axis currently situated near/along the Mississippi River Valley) temperature & precipitation trends aren't expected to improve anytime soon unfortunately.
Went ahead and cancelled the high rip current risk as it was set to expire at 11PM ET. Otherwise, dry conditions over land continue overnight with light winds and lows in the lower 70s. Hot and dry conditions will prevail through the short term period as high pressure will remain in control. This will keep afternoon high temperatures in the mid to upper 90s, with dewpoints likely mixing out into the low to mid 60s.
Abundant moisture will still exist in the low-levels which will support the development of low stratus, generally along and north of I-4.
/issued 256 PM CDT Sun Sep 15 2019/ (Tonight and Monday) The short term remains dry, with temperatures warmer than usual mid September temperatures.
1126 PM MDT Sun Sep 15 2019 The latest upper air analysis shows deep upper trough just off the west coast. In response to this digging trough, a robust ridge continues to build across the intermountain west. A weak upper trough currently centered over eastern Arizona and western New Mexico will slowly meander northeastward over the next few days.
High pressure will build in from the north and bring a very long stretch of dry weather. The prevalent clouds will keep the temps cooler - but near normal - in the northern and central zones. A large upper level ridge will build over the Great Lakes which will dominate the weather pattern through the week.
But most of the higher resolution models show that while the band may weaken later tonight, it should reorganize itself a bit when it reaches extreme eastern WA on Monday. RJ 06Z TAFS: Cold front is moving very slowly to the east.
245 AM EDT Mon Sep 16 2019 Weak high pressure will extend across the southern middle Atlantic states today. A backdoor cold front will push through the region again Tuesday.
A strong cold front will sweep through the state Monday night through Tuesday bringing below normal temperatures through mid to late week. Evening satellite imagery shows an upper low lifting through the southern Rockies while a deeper upstream trough is noted digging just off the Pacific Coast. Otherwise the upstream trough will move inland overnight into the day Monday resulting in a substantial increase in winds across much of the area, particularly across the west deserts.
GOES-East WV imagery is also depicting an area of stronger subsidence/dry air aloft moving southeastward from TN into the Deep South with the amplifying deep-layer ridge moving eastward (axis currently situated near/along the Mississippi River Valley). As such, dewpoints in the low to mid 60s & temperatures rising into the mid to upper 90s this afternoon will foster RH values as low as ~30%.
VFR conditions and light winds will prevail beneath high pressure aloft. Normal highs for mid September are in the low to mid 80s, and the forecast highs are around 5 to 10 degrees above those numbers.
242 AM CDT Mon Sep 16 2019 An upper ridge continued to build across the central CONUS overnight, as a trough dug into the Pacific northwest. High pressure will keep the region hot and dry today. High pressure will gradually shift east of the area by this evening, leaving us in southwesterly flow aloft. A weak disturbance will ripple along the back edge of the ridge, potentially bringing a slight chance for a few showers or isolated thunderstorms to far northeast Nebraska tonight. Low temperatures tonight will stay well above normal, in the lower 70s. Southerly winds are expected to increase ahead of an approaching cold front Tuesday, with gusts up to 25-35 mph possible.
203 AM CDT Mon Sep 16 2019 Hot weather continues as an upper level ridge positions itself over the region. South and along the boundary, in the higher PW air, CAPE values will be 1500-3000 J/kg and there will be some weak speed convergence at 925mb to help aid in any development.
/issued 424 AM CDT Mon Sep 16 2019/ In the short-term, upper-level ridging and associated warm weather will continue through mid-week. Models are more consistent in showing a low in the western Gulf of Mexico coming inland into Texas and then getting pulled farther north as the upper ridge axis moves east and also higher liklihood of getting southwest flow aloft ahead of a trough moving toward the area from the west. While these scenarios are looking more likely, there is still disagreement on the timing of trough and precipitation.
Plenty of high clouds streaming north across the CWA ahead of an upper trough that is nearing the west coast. A bit cooler today with the cloudiness but still pretty warm with max temps well into the 80s over the plains, possibly a few lower 90s.
321 AM MDT Mon Sep 16 2019 Plenty of high clouds streaming north across the CWA ahead of an upper trough that is nearing the west coast. A bit cooler today with the cloudiness but still pretty warm with max temps well into the 80s over the plains, possibly a few lower 90s.
/Issued 358 AM CDT Mon Sep 16 2019/ Hot and humid conditions underneath a ridge of high pressure will continue Today and Tuesday before the ridge shifts southeast for the second half of the week. The result will be high temps in the low to upper 90s for most locations Today and Tuesday with slightly cooler.
742 AM EDT Mon Sep 16 2019 High pressure will build into the region and control our weather all week with dry weather expected and partly to mostly sunny skies.
Broad scale subsidence will persist over most of the region as the ridge aloft shifts westward and amplifies northward. The forecast area will remain on the east side of the ridge axis with drier than normal PWATS over most inland areas. The upper level low will continue westward over the western Gulf with a trailing W to ENE trough extending across the north central Gulf serving to continue triggering convection over marine waters. Trended temperatures inland from the coast a little warmer today due to drier air and decreased upper level cloud cover.
/Today through Tuesday/ Upper ridge holding firmly in place. Have placed chance pops for southern portions of ne TX Tue aftn to account for models suggesting more agressive moisture return into ne TX with this low.
/issued 331 AM CDT Mon Sep 16 2019/ Deep PACNW trough to our west continues to move on shore this morning as high pressure aloft holds to our east resulting in continued SW flow over the CWFA. SW flow will remain in tact tomorrow as the Pacific trough tracks across the Great Basin and a secondary Pacific storm develops in its wake.
/Issued 356 AM EDT Mon Sep 16 2019/ A quiet forecast looks to continue this short term period as high pressure will keep rain chances near zero through tonight. A weak cold front will move into N GA early Tuesday and become stationary.
A cool upper level low pressure system with a surface cold front is spreading into the area this morning. The rain band associated with the cold front at 3:30 am extended from northern Lake County to northeastern Shasta County. Southerly winds around 10-15 mph are expected in the Valley, with gusts to 40 mph in the higher mountains. The upper-level trough is forecast to shift east of the state by early Tuesday, ending precipitation threat across interior NorCal.
Temperatures will once again range in the upper 70s to potentially low 80s this afternoon, as this should be the last nice day before our approaching cold front. This cold front has progressed slower and slower with each forecast run, but it now appears that it will finally cross Idaho into western Montana during the early hours of Tuesday morning.
Moisture will remain in place across northern Arizona on Monday as a low pressure system moves into the Great Basin.
527 AM MDT Mon Sep 16 2019 Current surface map places trof across the western Dakotas. Deep low level mixing behind surface trof will limit MLCAPE across northeast Wyoming and far western South Dakota.
628 AM CDT Mon Sep 16 2019 Update for 12z TAFs Hot weather continues as an upper level ridge positions itself over the region. South and along the boundary, in the higher PW air, CAPE values will be 1500-3000 J/kg and there will be some weak speed convergence at 925mb to help aid in any development.
432 AM MDT Mon Sep 16 2019 The highly amplified upper level pattern continues to buckle through the next 24 hours, with the next trough starting to affect western WY. The trough sweep into WY overnight, with increasing chance for showers west to east through the night. Tuesday will be a messy day with the cold front and showers, associated with the trough, passing through. Temperatures should decrease through the afternoon behind the front leaving high temperatures 10 to 20 degrees cooler than high temperatures today/Monday. It will be similar to the higher wind winter systems this area receives and quite indicative of the changing of the seasons.