Aikyam-Lab/Synoptic-Bench huggingface dataset:
255 PM EDT Wed Oct 23 2019 Short term period remains largely quiet as weak high pressure remains positioned over the area. This high pressure ridge will shift eastward as a broad upper level trough approaches the region.
243 PM CDT Wed Oct 23 2019 High pressure centered over the Tennessee Valley is keeping skies clear, and a cool air mass aloft is keeping temperatures right around normal for this time of year.
341 PM EDT Wed Oct 23 2019 High pressure over the southeast CONUS will push northeast into the Mid Atlantic region today and Thursday.
Winds are expected to increase and shift to easterly as an approaching cold front over West Texas progresses toward the region, which will force the high pressure mentioned in the previous TAF period to lift to the north and increase the pressure gradient across the region.
301 PM EDT Wed Oct 23 2019 Mid/upper ridging across the peninsula remains the main weather influence aloft although broad mid/upper troughing over much of the interior CONUS has shunted it a bit south and east compared to previous days. High pressure has built in behind a surface frontal boundary positioned across the south/central peninsula providing areas to its north with cooler/drier conditions over the past 12-24 hours.
325 PM EDT Wed Oct 23 2019 High pressure centered over the Appalachians will get stronger as it heads to the mid Atlantic. Pressure gradient over us will weaken as a weak trough moves into the Midwest.
114 PM EDT Wed Oct 23 2019 Dry weather and seasonable temperature is expected until the approach of weekend low pressure. Dry weather, limited cloud coverage, and temperatures right around normal are expected today as high pressure builds in south of the forecast area.
628 PM CDT Wed Oct 23 2019 Gusty winds up to 35 to 35 mph remain possible through the mid to late afternoon ahead of a cold front, currently crossing into southeast Nebraska as of the early afternoon. Afternoon highs Thursday will be limited to the lower 50s throughout the area, followed by freezing temps across northern Missouri Thursday night and overnight lows in the upper 30s further south.
We expect more clearing skies across the region for the remainder of the afternoon and tonight in a region of subsidence behind a trough/low passage earlier today. On Thursday, an h500 ridge begins to build into the Northern Plains. with dry weather expected, but the warmer air still remains in Montana.
Other than a brief stint of isolated showers and thunderstorms that passed through the Lower Keys and Florida Straits, there hasn't been much in the way of precipitation this afternoon and evening. This is most likely due to some dry air entrainment in the low levels. An isolated shower or two may move across the Lower Keys during the morning and afternoon hours.
520 PM EDT Wed Oct 23 2019 High pressure over the southeast CONUS will push northeast into the Mid Atlantic region today and Thursday.
302 PM MDT Wed Oct 23 2019 The cold front continues to sag south across northeast Utah and northwest Colorado early this afternoon resulting in ongoing light snow showers along the Divide. The lower elevations could see anywhere from a few tenths to an inch or so along the Divide. As a result, expect Thursday's highs to be around 10 degrees cooler with skies quickly clearing as showers taper off in the morning.
An upper level ridge of high pressure will bring dry and warm weather to the region Thursday.
Chattanooga Airport, TN 41 71 51 60 / 0 0 10 80 Knoxville McGhee Tyson Airport, TN 38 68 48 63 / 0 0 0 60 Oak Ridge, TN 39 68 47 62 / 0 0 0 60 Tri Cities Airport, TN 35 67 42 65 / 0 0 0 20 NC.
Then, a strong cold front will bring a sharp wind shift to the region along with strong, gusty north winds behind the front. Significant changes will take place by tomorrow as a strong cold front moves through the area. (Thursday night through Wednesday) Rain chances continue into Thursday night as the upper low/trough moves across the Panhandle.
540 PM MDT Wed Oct 23 2019 The cold front continues to sag south across northeast Utah and northwest Colorado early this afternoon resulting in ongoing light snow showers along the Divide. The lower elevations could see anywhere from a few tenths to an inch or so along the Divide. As a result, expect Thursday's highs to be around 10 degrees cooler with skies quickly clearing as showers taper off in the morning.
Cold front has entered northeast Oklahoma as of mid evening. Activity will continue to expand in coverage overnight as the front continues to progress southeastward while at the same time an upper trough swings into the plains.
522 PM EDT Wed Oct 23 2019 Dry high pressure will prevail over the region through Thursday.
A low pressure system clipping the region will start increasing northerly winds this evening and peak on Thursday, especially down the Colorado River Valley. Another dry system and cold front may pass over the weekend, resulting in another round of gusty north winds. Current water vapor imagery depicts a positive-tilt trough amplifying southwestward across Utah. A Wind Advisory for the lower Colorado River area early Thursday morning.
Dewpoints in the 50s with temps in the low 60s across the Nature Coast while SW Florida will be cloudy with dewpoints/temps in the low 70s. High pressure over the southeast continues east/northeast flow across the area to the north of a stalled frontal boundary over South Florida.
Temperatures will be slightly cooler on Thursday with highs around 5 degrees below normal.
24/00Z TAF Cycle A cold front will approach the state from the NW late Wed night/early Thur morning.
726 PM EDT Wed Oct 23 2019 High pressure over the southeast CONUS will push northeast into the Mid Atlantic region today and Thursday.
Isolated to scattered showers and thunderstorms are expected to develop along the cold front this evening, especially southeast of I-44. In response to approaching trough, isentropic ascent/warm air advection north of the surface front will result in widespread rainfall. , the classic "deformation zone" on the northwest side of of a mid-latitude cyclone). One mitigating factor (for accumulations) is temperatures will be around freezing.
Some of the MOS products are indicating colder temps, especially in the west, with lows falling to the upper teens in areas west of highway 83 - but even in the east, everywhere show be freezing or colder. Breezy north winds will continue overnight with 12-15kts expected through 05Z with gusts up to 25kts expect as the upper level trough pushes across the CWA.
VFR conditions will dominate area-wide as the high pressure remains in place. /Tonight through Thursday/ Southerly flow will is continuing today out ahead of an approaching upper level trough that is digging south over the Southwest US. This area will not shift east much, barely entering our western and northwestern zones, but will develop more to the southwest over Central Texas as the upper level trough builds into West Texas on Thursday.
High pressure centered over the Tennessee Valley is keeping skies clear, and a cool air mass aloft is keeping temperatures right around normal for this time of year.
723 PM EDT Wed Oct 23 2019 High pressure will bring another period of VFR conditions with clear skies and light winds through the next 24 hours.
725 PM EDT Wed Oct 23 2019 High pressure centered over the Appalachians will get stronger as it heads to the mid Atlantic. Pressure gradient over us will weaken as a weak trough moves into the Midwest.
647 PM CDT Wed Oct 23 2019 A cold front which is currently moving through northwest Missouri will continue to drift southeast tonight, becoming nearly stationary by around 12Z Thursday morning over southeast Missouri /southern Illinois. Deterministic model guidance shows the low level baroclinic zone draped along or just south of the I-44 corridor in Missouri and just south of I-70 in Illinois.
903 PM CDT Wed Oct 23 2019 With high pressure firmly in control of the weather across the Tennessee Valley region, tranquil conditions are expected to continue tonight. However, it will still feel quite chilly as lows will run about 10 degrees cooler than normal heading into the last week of October.
/Issued 255 PM EDT Wed Oct 23 2019/ Short term period remains largely quiet as weak high pressure remains positioned over the area. This high pressure ridge will shift eastward as a broad upper level trough approaches the region.
355 AM EDT Thu Oct 24 2019 The advertised mean longwave trough axis has become established from the 4-Corners into northeast Canada and will demonstrate only slight forward progress over the next 36 hours as energy consolidates and increasingly cuts off invof the panhandles of Texas and Oklahoma. The bulk of the forecast for the weekend is clear cut in that mostly- cut-off energy near the Arklatex region will be forced to lift through the Ohio Valley and the Lower Great Lakes in response to the next round of height falls over the West Coast.
Some of the MOS products are indicating colder temps, especially in the west, with lows falling to the upper teens in areas west of highway 83 - but even in the east, everywhere show be freezing or colder. Skies will clear from northwest to southeast late day as an upper level trough crosses western Kansas.
Cooler today with periods of rain. As of 06z, a surface cold front is draped almost perfectly along I-44. Short-term model guidance shows the surface cold front drifting further south into Arkansas by afternoon, but most of today's rain will occur immediately to the north of this cold front as moisture from southerly low-level flow impinges and rides over the top of the front. With a cooler air mass coming in behind the front, expect temperatures in the mid-to-upper 40s by afternoon for most of the area. Overnight lows will hold steadily in the lower 40s areawide.
The cold front that came through the area yesterday has now shifted south of the CWA. In addition, to the cooler temperatures, there will be a chance for occasional light rain south of Interstate 70. This will come as a LLJ will override the aforementioned cold front south of the area and push north into the southern CWA. These shower will continue into Thursday night with the LLJ being persistent however, they will come to an end on Friday as an associated upper level trough will move into Oklahoma and force the front further south. Highs on Friday will be in the low 50s.
With high pressure firmly in control of the weather across the Tennessee Valley region, tranquil conditions are expected to continue tonight. However, it will still feel quite chilly as lows will run about 10 degrees cooler than normal heading into the last week of October. We are watching an approaching trough for the potential of heavy rain Friday. Models have come into fairly good agreement on timing of this system, with rain spreading north ahead of the warm front, into the Tennessee Valley Friday morning, and continuing pretty much all day with few breaks.
Medium Surface cold front has shifted off to the east with northwest winds bringing a weak cold advection regime. The low level thermal trough swings through today. Cooler 925 temps should knock temps for most back into the 40s. Medium to High Surface ridging builds into the area with quiet conditions. The high shifts slightly east on Friday so we start to see the beginnings of a return flow take shape.
A cold front will approach the area overnight, but with weak forcing and limited moisture, only expecting an increase in cloud cover. The cold front will wash out across the area Thursday into Friday. Weak pieces of upper energy will eject from an upper low across the southwestern USA and will bring some weak forcing at times to the old front across the area.
Shower and a few isolated thunderstorms continue to increase in coverage along the Interstate 44 corridor of Oklahoma ahead of a cold front. VFR conditions will dominate area-wide as the high pressure remains in place. /Tonight through Thursday/ Southerly flow will is continuing today out ahead of an approaching upper level trough that is digging south over the Southwest US. This area will not shift east much, barely entering our western and northwestern zones, but will develop more to the southwest over Central Texas as the upper level trough builds into West Texas on Thursday. Low temperatures tonight will range from the lower 50s in western areas to upper 40s to the east. High temperatures on Thursday will generally be in the lower 70s in northern sections while mid to upper 70s for southern points can be expected.
408 AM EDT Thu Oct 24 2019 Dry high pressure will prevail today. As this occurs, the low level flow will begin to veer more onshore as moisture slowly spreads north and west into the area. High clouds are present along the coastal plain within the western periphery of an upper level ridge centered just off the southeast U. Temperatures should be near or slightly warmer than observed highs yesterday, but the late day cloud cover should prevent significant warming. The forecast will indicate highs in the lower to mid 70s as a result. Ridge centered over the Mid Atlantic and northeast extending into the Carolinas but weakening. Warmer temperatures at night than previous nights due to increasing moisture.
Long wave upper trough will continue to swing through the region today. The associated Canadian cold front moved through yesterday and as forecast the colder air has started to descend on the region early this morning. Impacts should remain at a minimum with this event but, localized blowing snow could be possible along with minor refreezing/icing issues Thursday night into Friday morning. The upper low will move east fairly quickly and be out of the region by Friday leaving behind clear skies and another cool day and cold night Friday. This will be followed by a weak upper level ridge over the weekend resulting in an oscillation of temperatures back to the 70s.
1149 PM EDT Wed Oct 23 2019 High pressure just south of the Keystone state this evening will move off the east coast on Thursday. A weak cold front will sag south across the area late Thursday and Friday.
Light winds overnight along with clear skies under the ridge axis should drop lows in the mid to upper 20s which will be some of the coldest lows we've had for some locations this season.
133 AM EDT Thu Oct 24 2019 High pressure just south of the Keystone state this evening will move off the east coast on Thursday. A weak cold front will sag south across the area late Thursday and Friday.
1003 PM CDT Wed Oct 23 2019 Latest surface analysis is showing that the cold front has already moved to near a Quincy to Jefferson City line, with winds shifting to the west to northwest behind it. Britt A cold front which is currently moving through northwest Missouri will continue to drift southeast tonight, becoming nearly stationary by around 12Z Thursday morning over southeast Missouri /southern Illinois. Deterministic model guidance shows the low level baroclinic zone draped along or just south of the I-44 corridor in Missouri and just south of I-70 in Illinois.
Showers with embedded thunder will continue into the morning hours over much of central and southern Oklahoma and north Texas as an abundance of moisture runs over a slowly sagging cold front. This will be reinforced by a second front and cut-off low tomorrow into Friday, bringing more cold air (followed a blend of raw guidance for temperatures) and extensive rainfall expanding into northern Oklahoma behind it. Temperatures across northwest Oklahoma will fall to just below freezing Friday morning, making some rain / snow mix possible.
1149 PM CDT Wed Oct 23 2019 Latest surface analysis is showing that the cold front has already moved to near a Quincy to Jefferson City line, with winds shifting to the west to northwest behind it. Britt A cold front which is currently moving through northwest Missouri will continue to drift southeast tonight, becoming nearly stationary by around 12Z Thursday morning over southeast Missouri /southern Illinois. Deterministic model guidance shows the low level baroclinic zone draped along or just south of the I-44 corridor in Missouri and just south of I-70 in Illinois.
Afternoon highs today will be in the 40s, and on Friday will be in the lower 50s. Early morning satellite imagery together with 500mb heights showed an upper level trough moving towards the Great Lakes. There was some low stratus in the wake of this trough, but that was being eroded from subsidence aloft. On Friday an low pressure system will form over the lee side of the Canadian Rockies, and southwest flow will develop over the Upper Midwest with warm air advection bringing temperatures into the lower 50s, which is right at the seasonal average for late October. Confidence remains high in cold air spilling across the region this weekend in the wake of a passing cold front.
316 AM CDT Thu Oct 24 2019 The cold front that moved through the area today was located from southern MI to St Louis this morning. Cooler air filtered into the area behind this front. Stratus kept the area cloudy tonight and was leading to slightly warmer temps during overnight. Clouds remain for today keeping temperatures cooler for the day and for the overnight.
159 AM MDT Thu Oct 24 2019 A broad trough covers the CONUS, as a ridge builds over the west coast. Satellite shows some mid/low clouds drifting into the CWA, as high pressure slides into the region. As the upper ridge shifts eastward, warmer air will advect into the region today and Friday.
419 AM EDT Thu Oct 24 2019 A weakening cold front will offer an increase in clouds, as it pushes southeast into the Ohio Valley today. This front will wash out on Friday, as high pressure builds into the Great Lakes.
an upper level trough axis will approach the area tonight then move across the area on Friday. Low temperatures range from the low to mid 20s in the west to the low 30s in the east. Sunshine will return to the area by late morning or early afternoon with high temperatures ranging from the low to mid 40s in far eastern Colorado, around 50 across the east. upper level heights slowly increase under the influence of upper level ridging.
Upper level ridge over western Canada will shift east and flatten across southern Canada. Upper level jet on the northern periphery of ridge will nose into Ontario by 00Z Sat. Upper level trough will follow in tow and move over southwest Canada by Fri afternoon. For today, an upper trough will move across the area with warm advection.
314 AM CDT Thu Oct 24 2019 Another cool day today before a brief warm-up, as elongated trough slides across the region. Highs today will be a little warmer than yesterday, but still only in the 40s.
Some flurries and melting flakes may mix in along the Coteau des Prairies and in the higher elevation hills in south central South Dakota where surface temperatures are slightly cooler; however, no accumulation is expected. Upper-level ridging will increase Friday: At the surface this will translate to slightly warmer conditions as southerly winds develop.
321 AM EDT Thu Oct 24 2019 A weak mid level ridge is holding over the Florida Peninsula today as a broad trough digs into the southern Plains.
Warmer temperatures expected tomorrow and Friday, before a strong low pressure system move mainly north of the region.
Shower and a few isolated thunderstorms continue to increase in coverage along the Interstate 44 corridor of Oklahoma ahead of a cold front. /Tonight through Thursday/ Southerly flow will is continuing today out ahead of an approaching upper level trough that is digging south over the Southwest US. This area will not shift east much, barely entering our western and northwestern zones, but will develop more to the southwest over Central Texas as the upper level trough builds into West Texas on Thursday. Low temperatures tonight will range from the lower 50s in western areas to upper 40s to the east. High temperatures on Thursday will generally be in the lower 70s in northern sections while mid to upper 70s for southern points can be expected.
A cold front has been slowly sagging south overnight and is currently stretched across southeast Oklahoma into west-central Arkansas.
By Friday, a developing cyclone across western Canada will aid in southwesterly winds increasing with warm air advection spreading across the region.
302 AM CDT Thu Oct 24 2019 A cold front pushing through central IL, will bring cooler conditions to the area today. High pressure will bring dry and cool weather for Friday. Cold front was located just west of the I-57 corridor at 2 AM. Some light overrunning rain is expected to develop this morning over MO, as low pressure develops well to our south. Cold advection behind the boundary will bring much cooler air today, with highs only reaching the low/mid 50s for most areas. High pressure builds across northern Illinois on Friday, allowing for dry but cool weather.
Expect VFR conditions through the TAF period with just light southerly winds becoming easterly late in advance of an approaching low pressure system.
Rainfall amounts will be up to 2 tenths of inch with the highest amounts located over northeast Iowa and southwest Wisconsin. Low temperatures tonight will be in the lower and mid 30s. Much of Thursday looks to be mainly cloudy until the 950-850 mb ridge axis moves east through the area. High pressure builds into the region for the end of the work week.
408 AM EDT Thu Oct 24 2019 A quiet start to the short term as high pressure has developed eastward and now resides over the Mid Atlantic states with ridging through North GA. Deese A wet and unsettled weekend is on tap for the area given strong moisture advection and some upglide east of closed upper trough energy progged to push from the Arklatex to the Ohio Valley.
1203 AM CDT Thu Oct 24 2019 Gusty winds up to 35 to 35 mph remain possible through the mid to late afternoon ahead of a cold front, currently crossing into southeast Nebraska as of the early afternoon. Afternoon highs Thursday will be limited to the lower 50s throughout the area, followed by freezing temps across northern Missouri Thursday night and overnight lows in the upper 30s further south.
317 AM CDT Thu Oct 24 2019 Westerly flow will lead to good mixing today, despite cooler temperatures aloft.
Tonight, cloud cover begins to increase from south to north as the flow aloft becomes more amplified as a trough digs into the Plains.
314 AM EDT Thu Oct 24 2019 Dry high pressure will prevail today. As this occurs, the low level flow will begin to veer more onshore as moisture slowly spreads north and west into the area. High clouds are present along the coastal plain within the western periphery of an upper level ridge centered just off the southeast U. Temperatures should be near or slightly warmer than observed highs yesterday, but the late day cloud cover should prevent significant warming. The forecast will indicate highs in the lower to mid 70s as a result.
However, rain will continue, as the upper low shifts into the Red River Valley and reinforces ascent behind the surface boundary.
611 AM CDT Thu Oct 24 2019 Another cool day today before a brief warm-up, as elongated trough slides across the region. Highs today will be a little warmer than yesterday, but still only in the 40s.
Mean flow through the lowest 3 km is out of the southeast and the rest of the column should continue to transition to easterly today and into Friday. /issued 321 AM EDT Thu Oct 24 2019/ A weak mid level ridge is holding over the Florida Peninsula today as a broad trough digs into the southern Plains.
The cold front that moved through the area today was located from southern MI to St Louis this morning. Cooler air filtered into the area behind this front. Stratus kept the area cloudy tonight and was leading to slightly warmer temps during overnight. Clouds remain for today keeping temperatures cooler for the day and for the overnight.