Aikyam-Lab/Synoptic-Bench huggingface dataset:
122 PM EDT Thu Sep 3 2020 Showers and a few thunderstorms will mostly end tonight with the passage of a cold front. High pressure will provide dry weather and seasonable temperatures into the weekend. A trailing cold front will cross the region overnight, and will reach the southeast ridges by 12Z Friday. Cooler air will start to work into the northwest by sunrise, allowing temperatures to drop into the 50s, with lower 60s remaining in place across the southeast counties. A shower or two may linger in the southeast ridges Friday morning as the front completes its passage. Otherwise, high pressure will dominate over the Ohio Valley this period under a broad upper trough. A drier and cooler air mass taking hold will keep temperatures near or just below normal.
Modest high pressure building into the central Plains from the northwest bringing sub-50F dewpoints into northern and western portions of the state, with values around 70 ahead of it. Quiet conditions should be the rule through Friday with the dry surface anticyclone settling into eastern Kansas and Missouri.
1143 AM CDT Thu Sep 3 2020 The cold front is continuing to work through the area this morning, leaving northwesterly winds in its wake. Temperatures today in the 70s will be below climatological averages, thanks to the northwesterly flow and much cooler temperatures at 850mb and 925mb.
238 PM MDT Thu Sep 3 2020 Dry conditions will hold over the CWA through the weekend with an upper high holding over the sw CONUS, keeping the CWA under a dry nwly flow aloft. The cool front that passed across last night will wash back east overnight allowing for warmer temperatures to return Friday.
308 PM CDT Thu Sep 3 2020 The main challenge for the short term will be the speed and intensity of the CAA this afternoon as a weak cold front moves through the region. This cold front is currently moving through Central Kansas this afternoon and slowly progressing to the south and east. Thursday and Friday, ridging will start to build back into the region and southerly winds will once again return.
1137 AM EDT Thu Sep 3 2020 Dry and hot conditions expected through Friday as an upper level ridge builds over the area. A cold front will move south through the area Friday night and become stationary south of the area.
As the upper level trough moves in the northern CWA it will weaken.
After a passage of a cold front tonight, drier conditions will settle in for the end of the week. A cold front will be passing through the region tonight, extending off of a low pressure system centered north of the Great Lakes. Below normal temperatures are in store for tomorrow, thanks to the passage of a cold front overnight, with highs in the mid to upper 70s.
In case you did not notice, it is still quite humid across the area with dew points mostly in the lower 70s this morning.
SR Chattanooga Airport, TN 73 90 66 86 64 / 10 40 0 0 0 Knoxville McGhee Tyson Airport, TN 71 87 63 83 61 / 30 40 10 0 0 Oak Ridge, TN 71 87 62 83 59 / 30 40 0 0 0 Tri Cities Airport, TN 67 83 58 81 57 / 50 40 10 0 0.
201 PM CDT Thu Sep 3 2020 Early afternoon analysis showed a strong low pressure system spinning just north of Lake Superior, with an associated cold front draped across Lake Michigan and into far southeast Wisconsin. Winds should subside this evening as the low continues to push off to the east and an inversion sets up. Model soundings show a little instability in the cloud layer, but pretty dry air in the low levels so anything that does develop would have a difficult time reaching the ground. Expect a slightly warmer day than Thursday with winds being more westerly vs. northwesterly, as highs range from the upper 60s north of I-94 to the lower 80s in parts of northeast Iowa and southwest Wisconsin.
Northwesterly flow aloft continues over the Central Plains, with the only clouds in the vicinity being associated a cold front that has since passed to the south and east of the area and is currently oriented from southeastern Kansas to west-central Illinois. Going through the next three days, a warming trend will begin and will get us as high as 100 in portions of eastern Nebraska as mid- level heights gradually increase with the amplifying ridge in the Intermountain West.
1120 AM MDT Thu Sep 3 2020 Recent cold frontal passage through the overnight has brought in some breezy reports across the region coupled with pockets of low visibility from recent smoke/haze from recent fires up in MT. Otherwise a cooler day across the region with near-normal highs in the mid to upper 70s west of the Laramie range and up to the mid 80s eastward with no precipitation expected.
The big news is a cold front currently extending from Wisconsin to Kansas. But, the lower humidity and cooler nights will be a tremendous relief.
High pressure will remain the dominate feature over the next 24 hours with convection mainly suppressed. Overnight lows tonight will generally be in the low to mid 70s with afternoon highs on Friday in the low to mid 90s.
In the wake of the front, high pressure will result in lower humidity, slightly below normal temperatures, and dry weather right on through the weekend.
Much better rain chances come late into the short term period as a large slug of moisture moves northward with a weak, inverted trough.
We expect widespread low in the lower to mid 40s, with some upper 40s around the Minot area. Friday will be a bit warmer as the h500 ridge axis broadens and moves slowly east.
324 PM EDT Thu Sep 3 2020 Currently - Deep layered ridging extends across the Florida Peninsula. Swaths of warmer and drier lower in the levels continue to sweep westward across our area. Forecast - The ridge will remain across the Florida Peninsula over the next few days.
134 PM EDT Thu Sep 3 2020 Showers and a few thunderstorms will mostly end tonight with the passage of a cold front. High pressure will provide dry weather and seasonable temperatures into the weekend. A trailing cold front will cross the region overnight, and will reach the southeast ridges by 12Z Friday. Cooler air will start to work into the northwest by sunrise, allowing temperatures to drop into the 50s, with lower 60s remaining in place across the southeast counties. A shower or two may linger in the southeast ridges Friday morning as the front completes its passage. Otherwise, high pressure will dominate over the Ohio Valley this period under a broad upper trough. A drier and cooler air mass taking hold will keep temperatures near or just below normal.
Overnight lows will drop into the low 70s once again, making for one more muggy night before the weekend. Will continue to mention isolated to scattered rain and thunderstorms along the front Friday afternoon, and then a sigh of relief as a drier, cooler airmass begins to filter in overnight.
Will continue to monitor for this lower probability threat. Temperatures will run a couple of degrees cooler today with readings in the 80s areawide, due to clouds and rain. The upper low will finally be absorbed into the main trough on Friday. As it does, a cold front will descend into the Mid-South during the day on Friday. The front will quickly sink south as Canadian high pressure builds in from the northwest.
A cold front has moved through all but the far south central Kansas portion of the forecast area by early this afternoon. Into this weekend, upper level ridging over the western states will build eastward into the central Plains.
257 PM CDT Thu Sep 3 2020 Cold front continues to sink south through the forecast area this afternoon. Patchy fog is possible tonight as well, especially in the river valleys due to the warmer water temperatures versus the colder air temps expected. Lows tonight will be in the low 50s to low 60s with highs on Friday in the upper 70s to low 80s.
302 PM CDT Thu Sep 3 2020 A strengthening low pressure system centered north of the Great Lakes has kept breezy northwest winds going across the area. As the low moves off to the northeast tonight the winds will become light. Lows tonight will be mainly in the 40s, except for the low 50s in the Twin Cities metro area.
Temperatures were 10-15F cooler than yesterday, in the lower 70s. Upper high pressure will dominate the weather through Friday, keeping mostly clear skies and fairly light winds.
314 PM EDT Thu Sep 3 2020 Mainly dry the next few days, but can't totally rule out a brief sprinkle as a cold front passes through into early this evening.
1042 AM MDT Thu Sep 3 2020 The cold front dropped southward along the eastern edge of the Big Horn Range earlier this evening, and has wrapped back west and is pushing up the Wind River Basin. High pressure dominates the region otherwise, with south WY seeing temperatures similar to yesterday in the low to mid 80s, while the cold front brings temperatures north of the Divide down about 5 degrees from yesterday.
220 PM CDT Thu Sep 3 2020 Early this afternoon, the low-level stratus deck from this morning has given way to a field of scattered cumulus across most of the area. An attendant cold front from this system was draped back across the upper midwest into northwestern Missouri. The aforementioned cold front will be the focus of the forecast for later this afternoon into early tonight as it passes through the area from northwest to southeast. High temperatures in the low to mid 80s and drier dewpoints in the 50s are in store with no precipitation.
ridge west and trof east. Mid-level heights should continue to build slowly over the region through Friday night as ridge shifts subtly to the east.
245 PM CDT Thu Sep 3 2020 A cold front will continue to cross central Illinois through the evening hours, bringing the chance for showers and isolated storms over the east sections of the area. Cooler and dry conditions are expected Friday.
High pressure will build over the area for the Labor Day weekend. The highest risk of encountering damaging winds and/or tornado along with flooding rainfall would be northeast Maryland. A quick moving cold front will move across our area on Friday.
303 PM CDT Thu Sep 3 2020 18Z surface data has the cold front from near Milwaukee, WI to Wichita, KS. Quiet and dry conditions will be seen from late this afternoon through Friday as high pressure moves through the Midwest.
345 PM CDT Thu Sep 3 2020 An area of high pressure will slide into eastern Nebraska this evening behind this mornings cold front. went with the lower end of guidance for lows to start the day on Friday. expect southwesterly winds to develop and for warmer temperatures to return to the local area. the EC is now shifting the upper level low it cuts off further east.
Dangerous conditions due to heat exposure are likely in the lower elevations this weekend. High pressure building over the intermountain west will continue to dominate the weather across Arizona this week. An unseasonably strong high pressure system was in the process of strengthening over the southwestern United States during the morning hours.
High pressure will expand east across the Great Basin through the end of the week.
Going forecast was is good shape, with the main story for today being that it's cooler and less windy than yesterday.
For Friday, with the upper low nearly stationary, or moving slowly south/southwest, we will see another chance for mainly afternoon showers and thunderstorms, and mainly for areas south of a Sterling City to Brownwood line. Lows tonight will again be in the upper 60s to lower 70s, with highs on Friday expected to be a bit cooler due to some additional cloud cover from the upper low and precipitation.
Behind the front will be cooler air lowering temps during a breezy Sun aftn.
Deep layer ridge of high pressure remains anchored from the southwest Atlantic across the southeast US and into the Gulf. Considering the subsidence from the deep layer ridge though, not looking for rain chances this afternoon and into tonight. Even so, the deep layer ridge appears to remain strong enough to limit rain chances.
124 PM EDT Thu Sep 3 2020 Weak high pressure builds today and tonight while an occluded front stalls along the coast. A cold front will cross the region Friday.
The upper high will continue stretching eastward increasing heights across the region. Current analysis shows an upper-level trough over central Texas, and an upper-level ridge over CA/NV with an upper low centered over the Alaska Peninsula. The trough nearby is progged to close off late Thursday and become absorbed into the easterly flow south of the CONUS sometime Friday. This will allow the ridge to our west to build/expand to the east. As the ridge begins to build, it will bring northeasterly winds aloft to the area drying the mid-levels and limiting storm chances through the weekend.
Cold front currently in central IL and northwest IN will dive toward the region and be near the Ohio River by sunrise tomorrow morning. A weak cold front stretching from Michigan to Oklahoma this afternoon will push south, crossing the Ohio River into Kentucky overnight. The front will usher in pleasant dew points in the mid 50s on north breezes around 10 mph ahead of high pressure near Saint Louis.
1026 PM EDT Thu Sep 3 2020 Cold front moves through tonight with minimal chances for precipitation. High pressure builds on Friday and lasts through the weekend, keeping the forecast dry with below seasonal temperatures to start.
After a passage of a cold front tonight, drier conditions will settle in for the end of the week. Cold front currently moving through the northwest zones, with a narrow band of scattered showers along it. A cold front will be passing through the region tonight, extending off of a low pressure system centered north of the Great Lakes. Below normal temperatures are in store for tomorrow, thanks to the passage of a cold front overnight, with highs in the mid to upper 70s.
The air mass tonight is vastly different than the ones of the previous nights, with dewpoints a full 20 degrees lower and temperatures likewise 10-15 degrees cooler. With the colder air settling in over the warmer ground and bodies of water, shallow radiation fog is likely to form in the low-lying valleys closest to the high center. Modest high pressure building into the central Plains from the northwest bringing sub-50F dewpoints into northern and western portions of the state, with values around 70 ahead of it. Quiet conditions should be the rule through Friday with the dry surface anticyclone settling into eastern Kansas and Missouri.
710 PM CDT Thu Sep 3 2020 A cold front will continue to cross central Illinois through the evening hours, bringing the chance for sprinkles over the southeast sections of the area. Cooler and dry conditions are expected Friday.
Behind the front expect some slightly cooler temperatures in the morning and some gusty winds out of the north.
739 PM EDT Thu Sep 3 2020 Dry and hot conditions expected through Friday as an upper level ridge builds over the area. A cold front will move south through the area Friday night and become stationary south of the area.
High pressure in place over the area will lift north with easterly flow continuing for the next several days and afternoon sea breezes developing near the coast. Highs will continue in the lower to mid 90s with lows in the mid to upper 70s. High pressure will lift north of the area and E/SE flow will remain across the waters through the next several days.
A weak cold front stretching from Michigan to Oklahoma this afternoon will push south, crossing the Ohio River into Kentucky overnight. The front will usher in pleasant dew points in the mid 50s on north breezes around 10 mph ahead of high pressure near Saint Louis.
An area of high pressure will slide into eastern Nebraska this evening behind this mornings cold front. went with the lower end of guidance for lows to start the day on Friday. expect southwesterly winds to develop and for warmer temperatures to return to the local area. the EC is now shifting the upper level low it cuts off further east.
18Z surface data has the cold front from near Milwaukee, WI to Wichita, KS. Quiet and dry conditions will be seen from late this afternoon through Friday as high pressure moves through the Midwest.
605 PM CDT Thu Sep 3 2020 Early afternoon analysis showed a strong low pressure system spinning just north of Lake Superior, with an associated cold front draped across Lake Michigan and into far southeast Wisconsin. Winds should subside this evening as the low continues to push off to the east and an inversion sets up. Model soundings show a little instability in the cloud layer, but pretty dry air in the low levels so anything that does develop would have a difficult time reaching the ground. Expect a slightly warmer day than Thursday with winds being more westerly vs. northwesterly, as highs range from the upper 60s north of I-94 to the lower 80s in parts of northeast Iowa and southwest Wisconsin.
A few showers are expected tonight as a cold front moves over the region. High pressure will provide dry weather and seasonable temperature through the weekend. The primary cold front will cross the region overnight, and will reach the southeast ridges by 12Z Friday. Cooler air will start to work into the northwest by sunrise with temperature dropping into the 50s, with lower 60s across the southeast counties. A shower or two may linger in the southeast ridges Friday morning as the front completes its passage. Otherwise, high pressure will dominate over the Ohio Valley this period under a broad upper trough. A drier and cooler air mass taking hold will keep temperatures near or just below normal.
840 PM EDT Thu Sep 3 2020 A cold front is expected to cross the area tonight and tomorrow morning. In the wake of that cold front, high pressure is expected to build in from the north, brining tranquil conditions through at least the weekend. The cold front will push thru later tonight ending the showers from W to E. Highs generally will be in the low 80s with mid to upper 80s possible along the coastline.
723 PM EDT Thu Sep 3 2020 Look for dry, cooler and less humid weather for the start of the holiday weekend.
Issued by National Weather Service St Louis MO 621 PM CDT Thu Sep 3 2020 Early this afternoon, the low-level stratus deck from this morning has given way to a field of scattered cumulus across most of the area. An attendant cold front from this system was draped back across the upper midwest into northwestern Missouri. The aforementioned cold front will be the focus of the forecast for later this afternoon into early tonight as it passes through the area from northwest to southeast. High temperatures in the low to mid 80s and drier dewpoints in the 50s are in store with no precipitation.
A strengthening low pressure system centered north of the Great Lakes has kept breezy northwest winds going across the area. As the low moves off to the northeast tonight the winds will become light. Lows tonight will be mainly in the 40s, except for the low 50s in the Twin Cities metro area.
1007 PM EDT Thu Sep 3 2020 Subsidence and warm temperatures aloft with the strengthening mid-level ridge over head proved too much for any deep convection to get going across east central Florida today.
903 PM CDT Thu Sep 3 2020 A cold front will continue to cross central Illinois through the evening hours, bringing the chance for sprinkles over the southeast sections of the area. Cooler and dry conditions are expected Friday.
(This evening through Friday) Based on latest observations, a cold front had passed just south/east of Buffalo and was approaching Freedom and Woodward. Some areas of western Oklahoma and western north Texas will reach the low 90s.
Stumpf (Issued 220 PM CDT Thu Sep 3 2020) Tonight through Friday night: Cold front shifting off to the east. A weak trough, tightening baroclinic zone and a potential weak wave riding through will at least increase clouds.
923 PM EDT Thu Sep 3 2020 A cold front is expected to cross the area tonight and tomorrow morning. In the wake of that cold front, high pressure is expected to build in from the north, brining tranquil conditions through at least the weekend. The cold front will push thru later tonight ending the showers from W to E. Highs generally will be in the low 80s with mid to upper 80s possible along the coastline.
Arthur Northeast Montana is now behind the cold front that arrived overnight.
802 PM EDT Thu Sep 3 2020 A cold front will cross the area overnight and early Friday. High pressure will then build over the area, resulting in mainly dry and sunny conditions for the long holiday weekend. The dry air does not arrive until after the advancing low clouds and it's partner cold front which are just starting to cross LE now. High pressure and associated low-pwat air mass should build into the region Friday, accompanied by mostly sunny skies and seasonable temperatures. Model 850mb temps between 11-14C should translate to highs from the low 70s over the northern mountains, to the low and mid 80s in the Susq Valley.
Dangerous conditions due to heat exposure are likely in the lower elevations through the holiday weekend.
A cold front will drop south into the state starting Fri morning.
305 PM MDT Thu Sep 3 2020 High pressure over the region will continue to bring dry conditions over the area through Friday. Temperatures will be slightly warmer on Friday than today, with highs in the 80s to around 90 degrees. While relative humidities will be down into the teens, ridging overhead will produce only light winds.
High pressure will build over the area for the Labor Day weekend. A quick moving cold front will move across our area on Friday.
736 PM EDT Thu Sep 3 2020 Cold front moves through tonight with minimal chances for precipitation. High pressure builds on Friday and lasts through the weekend, keeping the forecast dry with below seasonal temperatures to start.
741 PM EDT Thu Sep 3 2020 A cold front will cross the area overnight and early Friday. High pressure will then build over the area, resulting in mainly dry and sunny conditions for the long holiday weekend. The dry air does not arrive until after the advancing low clouds and it's partner cold front which are just starting to cross LE now. High pressure and associated low-pwat air mass should build into the region Friday, accompanied by mostly sunny skies and seasonable temperatures. Model 850mb temps between 11-14C should translate to highs from the low 70s over the northern mountains, to the low and mid 80s in the Susq Valley.
555 PM MDT Thu Sep 3 2020 Dry conditions will hold over the CWA through the weekend with an upper high holding over the sw CONUS, keeping the CWA under a dry nwly flow aloft. The cool front that passed across last night will wash back east overnight allowing for warmer temperatures to return Friday.
An upper ridge will continue to build into the area through Friday. Temperatures will be even warmer, with record and near-record highs expected in most locations.
Overall, the short term forecast is relatively quiet as high pressure builds in over the Great Basin. A cold front currently making its way through the Panhandles will bring breezy wind speeds across the northern half of the forecast area this afternoon.
642 PM CDT Thu Sep 3 2020 Cold front continues to sink south through the forecast area this afternoon. Patchy fog is possible tonight as well, especially in the river valleys due to the warmer water temperatures versus the colder air temps expected. Lows tonight will be in the low 50s to low 60s with highs on Friday in the upper 70s to low 80s.
Deep easterly flow prevails over the region, with the subtropical ridge at the surface and aloft extending from the western Atlantic across the Florida peninsula and northern Gulf of Mexico. Despite a similarly dry 00Z Miami sounding, sufficient moisture and instability remains in the low levels, combined with moderate easterly low level flow, to support the isolated to widely scattered convection we have observed during the evening.