Aikyam-Lab/Synoptic-Bench huggingface dataset:
Cloud cover will also continue to keep us unseasonably cool, with highs in the low/mid 70s north of the parkways and where we see more showers and thicker clouds temperatures could once again be only in the mid/upper 60s. It'll catch up to another upper low, currently centered just west of the region. The two will merge into one upper low as it moves into eastern KY. For our sensible weather that will mean continued cloud cover for most of the day Friday, though as the new merged upper low continues eastward, our southern IN and perhaps locations west of I-65 in KY will see some sunshine. Potential sunshine in the west will mean temperatures several degrees warmer for highs west of I-65 compared to points east.
1054 PM MDT Wed Sep 23 2020 Dry conditions will remain for the rest of the afternoon as the ridge reaches its maximum extent over the area. On Thursday midlevel flow becomes more southwesterly as the trough approaches. This will bring an associated cold front to the vicinity Thursday evening. Thus, with these winds and the lower relative humidity values tomorrow, critical fire weather conditions are expected. The cold front will slide southeast through early Friday morning.
1040 PM CDT Wed Sep 23 2020 Continued warm and dry into the weekend then a bit of a pattern change to cooler weather, but still expected to be dry. As this system passes we will see slightly cooler conditions north of I-90, but lows still in the mid 50s. High pressure will settle in with warm air in place. Southerly flow increases Thursday night into Friday morning ahead of the next piece of energy, so anticipate lows in the upper 50s to lower 60s and highs in the 80s, possibly upper 70s in central SD where cooler air works in by late morning.
249 AM CDT Thu Sep 24 2020 A small middle level low (not associated with the remnants of Beta) continued to move north/northeast along the Wabash Valley through 07z (2am CDT), with attendant light precipitation associated with the low and trailing southwest along the shear/vorticity trough axis. The trough axis will continue to slowly move southeast for the remainder of today, carrying the precipitation southeast along with it. Although drying aloft will take place behind the trough axis, broad moisture advection and isentropic lift at low levels from the general southeast flow around Beta will keep clouds in place, especially over western Kentucky during the overnight hours into early Friday morning.
Low level temperatures still quite warm, though with the weaker low level flow, we may not mix to max potential, and thus expect highs a few degrees cooler than yesterday most areas. Ridge axis slips east this evening, with modest southerly flow developing through tonight ahead of the next weak boundary, which will approach our western counties by daybreak Friday.
expect mostly clear skies Ridge continues to build over the region aloft. Freezing temps possible in KLXV. Generally weak westerly flow across the region Thursday night increases through Friday night, as upper level ridging across the Rockies is flattened by eastern Pacific energy moving through the faster zonal flow across the Pacific Northwest through the Northern Tier of States. Pattern supports drier and warmer weather across the region, with downslope flow supporting record temperatures Friday, with highs in the upper 80s to upper 90s expected across the plains, and in the 60s to lower 80s across the higher terrain.
345 AM EDT Thu Sep 24 2020 High pressure off the southeast U.
today as the upper level ridge becomes a bit more enhanced across the northern Rockies. Tonight, the low level flow will become more southerly/southwesterly which will limit the amount of low level moisture that will be in place. The ridge will pivot to the east a bit tomorrow which will help to raise heights across our forecast area. /WCI A positively tilted area of upper level high pressure will extend NE out of the desert southwest on Friday with near zonal flow across the Pacific Northwest. To the south, a weakness will exist between two high pressure centers; one is off the coast of Baja and the other east of the Bahamas.
335 AM MDT Thu Sep 24 2020 A cold front today will lead to west winds ramping up between 20 and 35 mph with gusts as high as 45 mph. Cooler temperatures will remain in place following the frontal passage today heading into the weekend with gusty winds at times. Ensembles show trough deepening as it shifts across the central U. while upper ridging builds across the western U. VFR conditions are expected today with winds becoming west late this morning, increasing to 15 to 25 kts with gusts to 30 kts as a cold front approaches.
Today through Friday night: A band of rain along a cold front will exit north Idaho early this morning. Rain and cloud cover will keep temperatures a little cooler Friday compared to previously thought but windy conditions are still likely in the afternoon across the Columbia Basin and West Plains as late afternoon sun breaks and 850mb winds of 30-40 kts allow for at least localized wind gusts of 35-40 MPH to mix down to the surface. The drier air and decreasing winds will allow for cooler lows mainly in the mid 30s to mid 40s with locally freezing temps around Republic.
638 AM CDT Thu Sep 24 2020 Some of the high-res models continue to hint at stratus developing toward dawn over portions of southeast KS. Upper ridging will increase overhead today while the remnants of tropical storm Beta jets on over to the Mid-Atlantic Region. Upper ridging will continue through tomorrow before coming more zonal into the weekend. A trough is progged to move out of Saskatchewan and rotate into Ontario/The Great Lakes Region this weekend.
High pressure over the Great Basin weakens slightly through Friday as trough energy pushes through the Pacific NW. Main impacts from the trough that will pass by just to our north will be the gusty afternoon and early evening winds.
/issued 345 AM EDT Thu Sep 24 2020/ High pressure off the southeast U.
702 AM EDT Thu Sep 24 2020 High pressure extending from the Lower Ohio River Valley to the Southeast U.
518 AM CDT Thu Sep 24 2020 Another warm and dry day expected across the region as high pressure nudges east across the local area.
549 AM EDT Thu Sep 24 2020 High pressure extending from the Lower Ohio River Valley to the Southeast U.
525 AM EDT Thu Sep 24 2020 Dry and warm weather is expected through much of the weekend under high pressure.
542 AM EDT Thu Sep 24 2020 Dry and warm weather is expected through much of the weekend under high pressure.
Another surge of moisture will move into the area over the weekend but this time it will be ahead of the first of two cold fronts.
641 AM CDT Thu Sep 24 2020 Another warm and dry day expected across the region as high pressure nudges east across the local area.
and Friday A weak cold front will produce showers and thunderstorms as it moves slowly south across the region today. High temperatures will be around ten degrees cooler than yesterday. The front will move quickly north as a warm front Friday as low pressure approaches from the Northern Plains.
629 AM CDT Thu Sep 24 2020 A small middle level low (not associated with the remnants of Beta) continued to move north/northeast along the Wabash Valley through 07z (2am CDT), with attendant light precipitation associated with the low and trailing southwest along the shear/vorticity trough axis. The trough axis will continue to slowly move southeast for the remainder of today, carrying the precipitation southeast along with it. Although drying aloft will take place behind the trough axis, broad moisture advection and isentropic lift at low levels from the general southeast flow around Beta will keep clouds in place, especially over western Kentucky during the overnight hours into early Friday morning.
The mid level ridge axis currently oriented SW to NE from Southern California to Northern High Plains will begin shifting a bit more eastward today, and high temperatures will warm to the upper 70s to low 80s this afternoon under clear skies with light winds out of the south.
A strong Pacific trough will move across northern border states the next few afternoons. with the breaking down of the ridge over the Intermountain West a good signal for critical fire weather conditions to develop. The dry conditions will also help bring some good cooling to some of the high valleys and basins tonight and went below much of the blended solutions and guidance in these areas.
806 AM EDT Thu Sep 24 2020 Dry and warm weather is expected through much of the weekend under high pressure.
Especially as winds increase from the west with a weak, dry warm frontal passage expected here today around noon.
One more breezy day is expected as a trough of low pressure continues to move across the Pacific Northwest.
Continued dry into the foreseeable future with temperatures remaining 5 to 10 degrees warmer than normal.
A cold front continues to push slowly to our east, but light showers will still be possible for KPDT and KALW until 1500Z.
Higher rain chances start to return today, with shower activity confined to the lower half of the CWA, with a small TS threat around Lake O. Max temps will be in the upper 80s with an overnight low in the low to mid 70s.
Slow improvement mid morning, models starting to catch on to the faster movement of the low. Tonight, the low clouds continue. Some drier and cooler air continues to work into the system as it slowly drifts to the northeast. Cooler air moving into the region on the western side of the low will keep the overnight lows in the 60s. Weak high pressure at the surface will sit in place over the forecast area during the weekend.
This cold front will continue to move eastward today bringing gusty winds and showers.
539 AM CDT Thu Sep 24 2020 Low pressure slides through the Ohio River Valley this morning, holding cloud coverage in place this morning for locations east of the I-55 corridor. A larger Low pressure system will slip through the northern Midwest this weekend, however dry conditions are expected to continue. A mid-level Low pressure system is tracking through the southeast portion of the CWA this morning, moving into the Ohio River Valley region of Indiana early this morning. As Friday arrives, an upper Low slides through the southern Great Lakes, however this dry system will not bring precip to the region.
Otherwise, cloudy to mostly cloudy and somewhat cooler conditions will continue in the near term with clouds maintaining a narrow daily temperature range. Meanwhile, across the Southern Plains and Lower Mississippi Valley, a closed mid/upper level low is progged to slowly lift northeast through the Gulf States over the weekend.
242 PM CDT Thu Sep 24 2020 155 PM CDT An upper level trough across NE IA into southern WI will continue to dampen as it moves across northern IL and northwest IN this evening and overnight. High temperatures will be slightly warmer than Thursday's highs thanks to low level warm advection in southwesterly winds under the strengthening upper ridge.
Lows tonight will drop into the 50s, with highs tomorrow warming into the lower 90s under sunny skies.
The stationary front over central WI will lift nwd tnt as another trough of low pressure approaches from the nrn Great Plains through Fri nt.
TFJ A cold front today will lead to west winds ramping up between 20 and 35 mph with gusts as high as 45 mph. Cooler temperatures will remain in place following the frontal passage today heading into the weekend with gusty winds at times. Ensembles show trough deepening as it shifts across the central U. while upper ridging builds across the western U. WINDS: Becoming west late this morning, increasing to 15 to 25 kts with gusts to 30 kts as a cold front approaches.
Temperatures will not have a big range with highs this afternoon in the mid to upper 70s falling slowly into the lower 60s north to near 70 on the coast. Temperatures Friday should rise into the lower to mid 80s (but if the clouds erode sooner then temperatures will need a nudge up).
Skies should continue to clear thru the day on the back side of an upper trough that picked up the remnants of TS Beta. Weak surface ridging will gradually slide east and a south wind will develop during the afternoon in most places. The fog should dissipate by mid-morning with the low cloud cover eroding as the day wears on.
1220 PM CDT Thu Sep 24 2020 Some of the high-res models continue to hint at stratus developing toward dawn over portions of southeast KS. Upper ridging will increase overhead today while the remnants of tropical storm Beta jets on over to the Mid-Atlantic Region. Upper ridging will continue through tomorrow before coming more zonal into the weekend. A trough is progged to move out of Saskatchewan and rotate into Ontario/The Great Lakes Region this weekend.
The low will continue to move ENE and out of the area later today. Have also made minor adjustments to weather elements for the remainder of the day based on latest obs trends with cloudy, drizzly, and cooler weather persisting in weak cold advection on the back side of the slow moving low. Cooler air moving into the region on the western side of the low will keep the overnight lows in the 60s.
High temperatures for tomorrow are forecast to be in the lower 70s to near 80, with the cooler temperatures expected over southeast portions of our forecast area as light rainfall and cloud cover will linger here the longest.
Valleys were in the 70s, with 50s and 60s over the high terrain. mainly clear skies are anticipated with temps dropping into the lower 50s over most of the plains except upper 50s adjacent to the s mtns. Otherwise, it is going to be hot with max temps approaching the century mark over the lower ark rvr valley. Winds tomorrow over the high terrain should be from the west and be breezy, while the plains will likely see traditional upslope component to the sfc wind fields.
For the near term temps, about 10F warmer tomorrow. Then, on into the lower 80s for highs over the weekend as some upper level ridging and some added sunshine returns.
220 PM CDT Thu Sep 24 2020 At the surface, a warm front was currently located near the Missouri River valley over central North Dakota. Winds will generally be out of the south with the highest sustained values around 15 to 20 mph with gusts up to 30 mph. A trailing cold front will then sweep across the state tonight, bringing with it some chances of showers. Behind the cold front winds will shift to westerly, with breezy conditions ramping up once again by early Friday afternoon, a bit stronger than today.
ABM Chattanooga Airport, TN 63 76 65 82 64 / 90 40 20 10 10 Knoxville McGhee Tyson Airport, TN 60 74 63 81 63 / 80 60 20 10 10 Oak Ridge, TN 60 74 62 81 62 / 80 50 20 10 10 Tri Cities Airport, TN 58 73 59 80 59 / 80 60 10 10 0 TN.
The sfc trof will redevelop across the high plains of eastern Colorado late this evening.
The upper ridge will collapse behind the front with more zonal flow aloft for Friday as high pressure builds in at the sfc.
Southerly flow ahead of an approaching cold front will allow temperatures to rise close to record levels Friday.
Much cooler temperatures and a better chances of showers spread into the area Weak upper level wave was dropping through Minnesota and WI, heading towards the area this evening.
Today and tomorrow will be marked by mostly clear skies and mild to warm temperatures (with the warmer temperatures over western parts of the forecast area).
1226 PM EDT Thu Sep 24 2020 Dry and warm weather is expected through much of the weekend under high pressure.
Cold front exiting the forecast area this morning with a few showers lingering across the Central Mountains and parts of Southeast Oregon.
A small middle level low (not associated with the remnants of Beta) continued to move north/northeast along the Wabash Valley through 07z (2am CDT), with attendant light precipitation associated with the low and trailing southwest along the shear/vorticity trough axis. The trough axis will continue to slowly move southeast for the remainder of today, carrying the precipitation southeast along with it. Although drying aloft will take place behind the trough axis, broad moisture advection and isentropic lift at low levels from the general southeast flow around Beta will keep clouds in place, especially over western Kentucky during the overnight hours into early Friday morning.
Dry air and fall like weather will be in the area before two cold fronts will be passing through the area.
Upper level pattern continues to be dominated by an area of ridging from southern California up into the Northern Plains. Tonight, temperatures will be a bit warmer than previous nights due to the warmer temperatures aloft and light westerly winds but will still bottom out in the upper 50's to low 60's. With drier surface air in place and slightly warmer temperatures no fog or low clouds will develop leading to a clear night and morning.
Some cooler air will filter in behind developing northwest flow Sat night limiting Sun max temps to the 60s. Later Sun into Mon there will be a pronounced mid-CONUS trough diving down through the mid and lower Mississippi Valley, certainly bringing much cooler air to the Northern Plains as the new week dawns.
High pressure will continue to be suppressed south of the Four Corners region, providing a general westerly flow to the Panhandles. Normal lows would be in the lower 50s as we continue to add more darkness heading into the fall.
A cold front clips through the region and helps to temporarily cool temperatures into the mid and upper 70s for the weekend. High pressure builds into the region at the start of the week, and progresses into a strong upper ridge over the week.
306 PM CDT Thu Sep 24 2020 Forcing for ascent in association with a mid-level trough passing across the area will lead to continued shower chances through late afternoon/evening across mainly near and east of the Mississippi River before the wave passes east and transient mid-level ridging spreads across the area overnight. A warm front will lift north across the area overnight with gusty southerly winds and warm temps in the 70s to low 80s on Friday. By late afternoon, a cold front will approach from the west, but dry weather is expected for the area through the daytime hours. For Friday evening, a cold front will be working into the area, washing out as it does.
245 PM CDT Thu Sep 24 2020 WV imagery shows an upper trough extending from the Texas coast up thru the MS Valley, leaving West Texas and Southeast New Mexico under meridional flow aloft. Over the next few days, models are in line in strengthening the trough, and taking it to the ArklaTex by 06Z Sun.
With good downslope flow, could see max temperatures in central KS climb into the lower 90s for both Fri and Sat, with around 90 degrees expected elsewhere.
For later tonight and Sat AM, the stationary front over central WI will lift nwd as low pressure approaches from the nrn Great Plains through Fri nt.
Fairly quiet weather in the short term period despite an upper level trough overhead.
223 PM MDT Thu Sep 24 2020 Water vapor shows upper ridge extending from the Desert SW into the Northern Plains, with upper trof over the Pac NW into the Northern Rockies. At the surface, low is centered over northeastern MT with dryline extending southward into northeastern WY, and cold front through south central MT. Dry cold front associated with trof moving through the Northern Rockies will create a period of gusty northwest winds this evening and overnight, with winds decreasing on Friday. Highs Friday will be a bit cooler than today.
Meanwhile, a trough pushing into the PacNW region will result in a relatively weak, but strengthening pressure gradient this afternoon to encourage some southwesterly breezes, especially across the Western Mojave Desert and Southern Great Basin. Low pressure coming onshore in the Pacific Northwest early this morning will track east along the Canadian border through Friday, with only breezy afternoon winds for our region. This doesn't deter the prospect of a stout, amplified ridge for the western CONUS, but this just may not be as broad as originally thought.
344 PM CDT Thu Sep 24 2020 As of 20Z Thursday afternoon a midlevel ridge axis continues to amplify across the southern and central Plains. For Friday, another mostly sunny and warm day is expected as the midlevel ridge axis remains across the southern Plains. Highs are likely to reach the mid 80s in east central KS and the low 90s across north central KS.
Another warm and dry day expected across the region as high pressure nudges east across the local area.
How fast this clears out may play a little into the high temperature forecast. Today will be dry with 500mb ridging moving across the area. At the sfc will see a weak high pressure ridge axis move east with southerly winds developing on the backside.
A weak front dipping toward Lake Ontario late tonight into Friday morning is quickly served northward into Ontario and Quebec as a warm front by Friday afternoon as flow aloft becomes more southwest ahead of trough over the northern Plains.
Don't really expect clouds to begin to break up until Friday afternoon as some upper ridging begins to occur across the area.
A ridge of high pressure extending from the Mid-Atlantic states westward into Illinois/Missouri will dominate the weather today. Cloud cover from the remnants of Tropical Storm Beta will remain to the south of the KILX CWA, while clouds associated with a weak cold front stay to the north across Wisconsin and northern Illinois. A mid-level Low pressure system is tracking through the southeast portion of the CWA this morning, moving into the Ohio River Valley region of Indiana early this morning. As Friday arrives, an upper Low slides through the southern Great Lakes, however this dry system will not bring precip to the region.
1254 PM EDT Thu Sep 24 2020 Mostly dry and warm weather is expected through much of the weekend under high pressure.
Weak surface ridging over the area will maintain this fair weather. The ridge moves east, winds return out of the southeast overnight into tomorrow morning.
239 PM PDT Thu Sep 24 2020 A cold front pushed across northwestern California bringing some precip mostly to the northern Coast Range earlier today.
Northwest Wisconsin is under a marginal risk for severe weather tomorrow, with isolated severe storms embedded along the cold front.
525 PM MDT Thu Sep 24 2020 Water vapor shows upper ridge extending from the Desert SW into the Northern Plains, with upper trof over the Pac NW into the Northern Rockies. At the surface, low is centered over northeastern MT with dryline extending southward into northeastern WY, and cold front through south central MT. Dry cold front associated with trof moving through the Northern Rockies will create a period of gusty northwest winds this evening and overnight, with winds decreasing on Friday. Highs Friday will be a bit cooler than today.
Temperatures have struggled to warm up much today, with readings in the lower to middle 70s acrs the area. Latest UA analysis and WV imagery shows an elongated trough aloft from the Ohio Valley southwest into eastern TX, with dry air in the mid and upper levels. Temperatures will fall to near seasonal values, with lows in the lower to middle 60s. The elongated trough over the region will lift to the northeast through Friday, although a weakness will linger over TX, gradually cutting off into a weak low pres area by Friday night.
The lower CIGS and Visb can be expected in areas of heavier rainfall. Diegan Chattanooga Airport, TN 64 77 65 82 63 / 90 60 10 10 0 Knoxville McGhee Tyson Airport, TN 61 74 64 80 63 / 100 60 10 10 0 Oak Ridge, TN 61 74 63 81 62 / 100 70 10 10 0 Tri Cities Airport, TN 58 73 60 79 60 / 90 70 20 10 0 TN.