Aikyam-Lab/Synoptic-Bench huggingface dataset:
321 AM CDT Sat Sep 5 2020 6z surface map showed a weak diffuse pressure pattern in place with weak high pressure centered across southern IL. By this afternoon, low pressure will deepen across WY/SD increasing south winds and helping highs rise into the 90 to 95 range. Breezy and mild weather are expected tonight as low pressure slides east across SD and with warming mid level temps expect any t-storm activity to remain well northeast of the area overnight.
413 AM EDT Sat Sep 5 2020 Aviation section updated Pleasant weather continues across central Indiana as high pressure briefly moves through central Indiana.
Dangerous conditions due to heat exposure are likely in the lower elevations through this Labor Day weekend.
1234 AM CDT Sat Sep 5 2020 It's been a dry/quiet weather day with a warming trend in temps with increasing southerly low level flow and rising heights aloft as upper ridging builds east of the Rockies. Saturday, the western upper ridge axis dampens as energy moves into the Pacific Northwest which will allow the heat to crank up across our region as the warmer air to the west advects eastward onto the plains.
233 AM CDT Sat Sep 5 2020 High amplitude upper ridge remains positioned over the western U. with a trough axis over the Great Lakes and north into Canada. Temperatures were ranging from the low 60s in the eastern CWA to the upper 60s and low 70s out west.
A quiet night is underway as cooler and drier air moves in. 19z sfc analysis shows a cold front settling through eastern Kentucky with a broken line of showers and thunderstorms. Dewpoints, meanwhile, vary across the front from the mid 50s northwest to the lower 70s in the southeast. The models remain in good agreement aloft through the short term portion of forecast as the main trough descends deeper into the Ohio Valley.
202 AM EDT Sat Sep 5 2020 A cold front will drop across the area overnight into Saturday morning. Pleasant weather and high pressure is expected for the holiday weekend. Isolated to sctd showers and tstms right in advance of a cold front were moving through the ern shore and twd SE VA late this evening. The cold front will drop across the area overnight into Sat morning, with NW then N winds behind the front starting to usher drier air into the region. Lows will range from around 60/lower 60s degrees NW, to the lower 70s SE.
354 AM CDT Sat Sep 5 2020 (Today and Tonight) Whats left of the weak upper level low will continue to help produce scattered showers and storms across portions of the area again today. Don't expect coverage to be very widespread and will generally go closer to the lower side of PoPs.
Highs today should reach into the low 80s for most with dew points nestled comfortably in the mid to upper 50s.
Some low clouds noted where this cooler air is making its way into the higher terrain for the NE mountains but no reductions to vsby anticipated.
High pressure was centered over southeast Illinois causing light winds across the area.
320 AM EDT Sat Sep 5 2020 High pressure will be in control through the weekend. The high becomes anchored off the New England coast through the upcoming week. Tranquil weather is on tap today as high pressure builds across the region from the south and west. Sea breezes are likely in the afternoon which may moderate dew points somewhat, but should still be comfortable in the lower 50s. The middle and upper trough axis slowly approaches tonight.
658 AM CDT Sat Sep 5 2020 Today will be quiet, as high pressure over southwest Minnesota keeps skies mostly sunny. The low to the south of the CWA is likely to undergo cyclolysis Sunday and track south of the area. The potential for severe weather will likely remain well south of the area given the low MLCAPE values over our area.
731 AM EDT Sat Sep 5 2020 High pressure will be in control through the weekend. The high becomes anchored off the New England coast through the upcoming week. Tranquil weather is on tap today as high pressure builds across the region from the south and west. Sea breezes are likely in the afternoon which may moderate dew points somewhat, but should still be comfortable in the lower 50s. The middle and upper trough axis slowly approaches tonight. Highs will be in the upper 70s to the lower 80s.
A few mid and high clouds remain over the northeast TN and southwest VA counties, and some guidance shows slightly cooler temperatures over those regions. Diegan Chattanooga Airport, TN 86 63 89 64 90 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 82 58 86 62 88 / 0 0 0 0 0 Oak Ridge, TN 84 58 86 61 88 / 0 0 0 0 0 Tri Cities Airport, TN 80 55 84 59 87 / 0 0 0 0 0.
801 AM EDT Sat Sep 5 2020 Relaxed high pressure sprawls across the area today with light easterly winds. Relaxed high pressure residing across the waters will result in easterly winds although with an onshore shift near the coast in afternoon sea breezes.
531 AM EDT Sat Sep 5 2020 High pressure will maintain mainly dry and less humid weather through the Labor Day weekend.
504 AM EDT Sat Sep 5 2020 High pressure centered over the region will offer dry weather and slightly below normal temperatures today.
A cold front will slide south into forecast area Today, and stall near the GA/FL line Tonight through Sunday morning, before moving into central FL Sunday afternoon, and stalling there. High pressure will build from the north following the cold front starting Tonight, leading to an enhanced onshore flow, especially over SE GA. Any troughing which develops in this onshore flow will help to enhance precipitation chances as well.
553 AM CDT Sat Sep 5 2020 Large upper ridge is currently centered over the Desert Southwest/Central Great Basin with broad upper troughing across the Great Lakes into the Ohio Valley. At the surface, lee troughing is in place with a weak warm front from southwest Nebraska into southeast KS. Upper ridging is expected to remain over the southwest CONUS and expand into the central/southern High Plains. This will allow a cold front to start to push south across the northern Plains with a tight pressure gradient across the forecast area. By 12z Fri the ECMWF has the upper low over eastern IA/western IL while the GFS has the same low over central Nebraska.
Latest surface maps indicate high pressure directly over the region. This high will provide us with dry tranquil weather through the weekend. Otherwise, today, aside from some high clouds streaming in from the southwest, it will be a nice day with highs in the lower 80s and comfortable humidity, as dew points remain in the upper 50s to lower 60s. By Sunday, the high starts moving eastward as a front sinks southeast toward the area. As this occurs, southerly flow increases in the low levels.
WAA will increase overnight tonight into Sunday with temperatures further rising into the low to mid 90s and heat index values in the mid 90s to near 100.
An isolated storm or two is possible this afternoon near the higher terrain of SE OK and NW AR but probability too low for inclusion in forecast.
The pattern has not changed much from yesterday with the upper level low continuing to sit over eastern Texas and PWATs near 2 to 2. The one potential limiting factor is that the upper level low will be weakening today with mid level ridging expanding from the east into the area. Thinking the loss of the upper level low and further building of the ridge will limit the coverage more compared to today. High pressure to the north will keep east to northeasterly flow through the weekend.
1020 AM EDT Sat Sep 5 2020 A cold front drops south of the area this morning, bringing pleasant weather through the holiday weekend. A cold front has pushed south of the area this morning. Temperatures are in the low/mid 70s for much of the area, with upper 70s/around 80F for far SE VA and NE NC E of the Chowan River. High temperatures are expected to be in the upper 70s to low 80s, with some mid 80s possible far far sern portions of the area (where temperatures are warmer this morning). Continued dry but slightly warmer on Sunday with high pressure in control. Highs in the low 80s.
620 AM CDT Sat Sep 5 2020 High amplitude upper ridge remains positioned over the western U. with a trough axis over the Great Lakes and north into Canada. Temperatures were ranging from the low 60s in the eastern CWA to the upper 60s and low 70s out west.
Broad high pressure covering the Southeast United States and extending across the entire northern Gulf coast will underly broad mid level ridging spreading over the area through the weekend.
/issued 354 AM CDT Sat Sep 5 2020/ (Today and Tonight) Whats left of the weak upper level low will continue to help produce scattered showers and storms across portions of the area again today. Don't expect coverage to be very widespread and will generally go closer to the lower side of PoPs.
555 AM EDT Sat Sep 5 2020 A cold front will become stationary south of the area today. A cold front will continue moving southeastward through the forecast area this morning before stalling south of the area. Temperatures will be much cooler than the past several days, although near normal for early September, with highs in the mid 80s to around 90. Tonight: Front will be off to the south and east of the area, with drier and slightly cooler air settling into the region. Upper level trough remains over the eastern U. Cooler temperatures Sunday night with lows in the lower to mid 60s.
An upper level trough overhead will gradually weaken and drift to the west to near the Big Bend while an upper level ridge gains a little more influence. Elevated moisture levels, higher elevated freezing levels, and slow or repeat storm motions indicate a continued potential of locally heavy rains. Decreasing moisture levels and more influence of the upper level ridge as the trough moves west allows for showers and thunderstorms to be more isolated on Sunday.
652 AM EDT Sat Sep 5 2020 A cold front drops south of the area this morning, bringing pleasant weather through the holiday weekend. A cold front will drop south of the local area this morning. Continued dry but slightly warmer on Sunday with high pressure in control. Highs in the low 80s.
Even with the boundary, the airmass difference is not so much about temperatures (highs will be in the upper 80s to the north, but mostly in the low to mid 90s for central MS and the ArkLaMiss area). Max heat indexes to the south may creep into the low 100s.
Highs today should reach into the low 80s for most with dew points nestled comfortably in the mid to upper 50s. High pressure center is forecast to be to our east at the start of the period resulting in more of a southerly flow across the region for Sunday. Highs should warm into the 82-87 degree range with lows Sunday night dropping back into the low-mid 60s.
715 AM EDT Sat Sep 5 2020 A cold front will push through this morning, bringing slightly cooler and drier air this Labor Day weekend. KLTX VWP confirms northerly flow of wind in the low levels of the atmosphere presently. This regime brings much cooler daytime temperatures than of late. Rainfall amounts may never wind up too impressive however due to the absence of deep layer ascent as weak mid level ridging persists. A cold front is crossing the forecast area this morning. This in wake of a cold frontal passage this morning.
326 AM MDT Sat Sep 5 2020 Upper ridge over the western state will bring hot and dry conditions into eastern Montana today. Cold front drops south overnight to turn winds northwest.
There will be a cold front that moves into the area during the day. The highs will be earlier in the day in the north since the front gets through much of the area before evening. The winds are a little bit on the lower side during the time frame where the humidity is lowest.
Otherwise, periods of SHRA/ISOLD TSRA and low end VFR CIGS will continue today and have gone with VCSH at all sites trough early evening.
/issued 333 AM CDT Sat Sep 5 2020/ Upper ridge centered over UT this morning will extend into the region through Sunday.
521 AM MDT Sat Sep 5 2020 08z surface analysis had low over central MT with warm front/lee trough into western NE. Pleasant night across the CWA with a few high clouds passing by as they overtop upper ridge in place over the southern Rockies per water vapour loop. Today, upper/thermal ridge peaks over the CWA with 95th+ percentile 700mb temperatures of 14-18C. Warm front will push east across the area with deeply mixed very dry boundary layer behind it. Tonight, upper ridge flattens as it shifts west in response to falling heights over western Canada into the northern plains. This will allow a cold front to slip into the CWA late.
553 AM CDT Sat Sep 5 2020 (Today through Sunday) Upper ridge will expand eastward today resulting in warmer temperatures as associated low level thermal ridge shifts east as well. South/southwest winds will begin increase as well on Sunday as upper low tracks east across Canadian prairie provinces driving surface front south toward the area.
640 AM CDT Sat Sep 5 2020 High pressure will continue moving into the area today and clouds will diminish. Today Through Sunday Night An upper ridge stretches essentially from the Rockies to the southeast U. with an upper trough over the northeast. The ridge will strengthen over the Rockies today and tonight and set up a northwest flow over Arkansas.
The first round of convection has largely moved through the terminals, so there will be a relative lull as the lower atmosphere recovers. Activity will diminish tonight and Sunday as the wave pushes west and weak ridging begins to nose into the region.
1028 AM EDT Sat Sep 5 2020 High pressure centered over the region will offer dry weather and slightly below normal temperatures today.
955 AM EDT Sat Sep 5 2020 A cold front drops south of the area this morning, bringing pleasant weather through the holiday weekend. A cold front has pushed south of the area this morning. Temperatures are in the low/mid 70s for much of the area, with upper 70s/around 80F for far SE VA and NE NC E of the Chowan River. High temperatures are expected to be in the upper 70s to low 80s, with some mid 80s possible far far sern portions of the area (where temperatures are warmer this morning). Continued dry but slightly warmer on Sunday with high pressure in control. Highs in the low 80s.
549 AM EDT Sat Sep 5 2020 High pressure will be in control through the weekend. The high becomes anchored off the New England coast through the upcoming week. Tranquil weather is on tap today as high pressure builds across the region from the south and west. Sea breezes are likely in the afternoon which may moderate dew points somewhat, but should still be comfortable in the lower 50s. The middle and upper trough axis slowly approaches tonight. Highs will be in the upper 70s to the lower 80s.
645 AM EDT Sat Sep 5 2020 High pressure centered over the region will offer dry weather and slightly below normal temperatures today.
Activity will diminish tonight and Sunday as the wave pushes west and weak ridging begins to nose into the region.
435 AM CDT Sat Sep 5 2020 Today will be quiet, as high pressure over southwest Minnesota keeps skies mostly sunny. The low to the south of the CWA is likely to undergo cyclolysis Sunday and track south of the area. The potential for severe weather will likely remain well south of the area given the low MLCAPE values over our area.
WV imagery indicates broad ridging aloft extending across the Intermountain West into the Western High Plains. Near the surface, a lee side trough of low pressure is strengthening in eastern Colorado. A very strong mid level ridge is currently centered across the Great Basin. The edge of this ridge will subtly stick out across far western Kansas and eastern Colorado. lee troughing will prevail over the weekend. Highs today should peak in the lower to mid 90s.
947 AM EDT Sat Sep 5 2020 A cold front will push through this morning, bringing slightly cooler and drier air this Labor Day weekend. KLTX VWP confirms northerly flow of wind in the low levels of the atmosphere presently. This regime brings much cooler daytime temperatures than of late. Rainfall amounts may never wind up too impressive however due to the absence of deep layer ascent as weak mid level ridging persists. A cold front is crossing the forecast area this morning. This in wake of a cold frontal passage this morning.
The deep layer high pressure pattern across the region will gradually begin to weaken as a TUTT low over eastern Cuba gradually lifts west northwest over the next 24 hours. Slightly cooler aloft than recent days, though instability and afternoon storm coverage will still remain lower than seasonal.
6z surface map showed a weak diffuse pressure pattern in place with weak high pressure centered across southern IL. By this afternoon, low pressure will deepen across WY/SD increasing south winds and helping highs rise into the 90 to 95 range. Breezy and mild weather are expected tonight as low pressure slides east across SD and with warming mid level temps expect any t-storm activity to remain well northeast of the area overnight. Given the southwest flow ahead of the cold front expect dewpoints to mix down into the 60s so heat indices are expected to remain around the actual air temps so do not expect heat advisory type conditions at this point.
1048 AM EDT Sat Sep 5 2020 Water vapor imagery highlights a photogenic mid-upper level low over eastern Cuba, with occasional lower tropospheric enhancements. Episodes of deep convection have been favored along the eastern flank of this mid-upper level low. Low level ridging stretches west across Florida, although an undulation in the easterlies pressing west through the Straits of Florida has allowed SFC breezes to back to the northeast. A western Atlantic ridge will extend across the Florida peninsula, maintaining moderate to fresh easterly breezes through early Sunday.
Meanwhile, low pressure will deepen across the western Dakotas through the daytime hours. Low pressure and its associated warm front are progged to move eastward across the southern portion of SD this evening and overnight. Upper level energy associated with a s/w trough will dive southeastward across the Dakotas tonight. A cold front is expected to swing through later Sunday morning into the afternoon. Strong CAA will be well underway by Sunday evening, on the back side of a cold front.
823 AM EDT Sat Sep 5 2020 High pressure will maintain mainly dry and less humid weather through the Labor Day weekend.
1223 PM EDT Sat Sep 5 2020 High pressure will be in control through the weekend. The high becomes anchored off the New England coast through the upcoming week. Dry air continues to advect into the area as dew points fall into the low to mid 40s under light north/northwest flow. Just some high cirrus across parts of northern NJ and the lower Hudson Valley this hour, otherwise clear skies dominate. Sea breezes are likely this afternoon which may moderate dew points somewhat, but should still be comfortable in the lower 50s. A mid and upper level trough axis slowly approaches tonight. Highs will be in the upper 70s to the lower 80s.
As the upper trough continues drifting west, our western zones should see the best opportunity for a second round of storms this afternoon, especially if stronger heating can unfold and trigger convective temps. East of the upper trough, increasing subsidence should suppress the coverage of additional showers and storms.
High temperatures today have reached the lower 90s, and highs should climb even higher tomorrow toward 95 to 100. And then the cold front arrives.
243 PM EDT Sat Sep 5 2020 A cold front will be south of the area today providing drier and cooler weather to the Midlands and CSRA. Dry air will build into the region from the northwest today behind a cold front which has pushed south of the FA. Temperatures will be much cooler than the past several days, although near normal for early September, with highs in the mid 80s to around 90. Sunday and Sunday Night: An upper level trough will be in place over much of the eastern U. At the surface, high pressure will continue to wedge into the area, keeping a dry and somewhat cooler northeast flow in place across the area.
209 PM MDT Sat Sep 5 2020 A strong area of high pressure brought sunny and hot conditions to the area today. Potentially, winds could touch regular wind advisory for parts of the lower Snake Plain and Magic Valley.
High pressure is expected across the area into Sunday. Dry weather is expected through tonight, as high pressure remains over the Ohio Valley.
137 PM EDT Sat Sep 5 2020 Canadian high pressure will remain in place for the rest of the weekend, allowing for cooler temperatures and lower humidities across central NC. Sunday will see the passage of a weak moisture starved longwave trough aloft.
347 PM EDT Sat Sep 5 2020 A tropical upper tropospheric trough (TUTT) will slowly migrate from the eastern Cuba/Bahamas vicinity towards the Florida Straits through the weekend before stalling across the region. Given cooler temperatures aloft and downdraft CAPE over 1000 J/kg, a few stronger storms are expected, with gusty winds as the primary hazard. There are a couple of tropical features in the Atlantic that models indicate some development, but, with the high so far east, the systems should go to the north, maybe towards Bermuda. With no real high pressure over the area, convection will have an easier time developing. The end of the week does look to see a strong trough move into the plains and Mississippi Valley, which should help to build a ridge over the western Atlantic.
1120 AM EDT Sat Sep 5 2020 A cold front will be south of the area today providing drier and cooler weather to the Midlands and CSRA. Dry air will build into the region from the northwest today behind a cold front which has pushed south of the FA. Temperatures will be much cooler than the past several days, although near normal for early September, with highs in the mid 80s to around 90. Upper level trough remains over the eastern U. Cooler temperatures Sunday night with lows in the lower to mid 60s.
Upper level ridging will build in from the west on Sunday, resulting in mainly dry conditions. Expect high temperatures slightly above seasonal normals, in the low to mid 90s.
On Sunday, diffuse upper high pressure nudges westward over South TX further reinforcing mid-level drying along with modest reductions in PWATs. Less mid-level cloud cover tomorrow will secure warmer temps than today, yet heat indices should remain in check with values peaking around 100. Loss of buoyancy by Sunday night and the expansion of the upper high look to keep the region quiet with seasonal lows.
1253 PM CDT Sat Sep 5 2020 (Today through Sunday) Upper ridge will expand eastward today resulting in warmer temperatures as associated low level thermal ridge shifts east as well. South/southwest winds will begin increase as well on Sunday as upper low tracks east across Canadian prairie provinces driving surface front south toward the area.
245 PM CDT Sat Sep 5 2020 WV imagery shows the upper ridge stubbornly centered just west of the Four Corners, and a weak inverted trough over south Texas. To the south, area radars showed -SHRA over the lwr Trans Pecos, which could hang around thru Sunday invof the south Texas trough.
Tomorrow, an upper low digging into western Ontario will help push a strong cold front into the CWA.
344 PM CDT Sat Sep 5 2020 Currently, the upper air pattern features a eastern trough working into the New England region. Winds will pick up and become more south/southwesterly over the next 24 hours as the lee side trough deepens and broadens into the local area. The surface cold front will advance into the area by Sunday night. Capping should remain strong enough that if any storms can fire along the cold front, they would likely be isolated and mainly into the evening or overnight. The heat will persist into the day tomorrow but with mixing and dewpoints holding into the low to mid 60s as a result, should see heat index levels still maintain the 100 degree range.