Aikyam-Lab/Synoptic-Bench huggingface dataset:
703 PM EST Wed Nov 22 2017 Low pressure advancing into central Canada is nudging high pressure into the Ohio valley tonight. This process will produce a backing trend in the low level wind over lower Michigan that will push the low cloud pattern out of the region and bring in dry air from the Midwest. The influence of high pressure then returns late in the day into Thursday night as a weak cold front stalls over northern Michigan.
The 00Z JAX RAOB indicated increasing isentropic lift with low level NE winds 10-15 kts from the surface to about 925 mb, then winds shifting to SW near 820 mb with increasing magnitudes up through about 450 mb in response to the approaching upper level trough. Temperatures will be mild tonight under cloudy skies and NNE winds with values ranging generally in the low/mid 60s across the area.
An approaching trough/front system from the Gulf will bring better chances for rain and thunderstorms on Thursday.
537 PM MST Wed Nov 22 2017 Large upper ridge centered near the Four Corners will result in warm and dry conditions. High cirrus clouds will continue to come over the top of the ridge resulting in partly sunny skies.
/ISSUED 348 PM CST Wed Nov 22 2017/ Few cirrus clouds streaming in from the north in the wake of the cold front that passed through early this morning. High pressure will continue to build in from the NW through Thursday which will keep offshore flow through the rest of the workweek.
Strong cold front still on track to move across the region Thursday.
A strong ridge set up off the California coast continues to place the region under northwesterly to northerly flow the rest of the week.
346 PM MST Wed Nov 22 2017 Residual mid and high level moisture rotating on the eastern edge of the ridge of high pressure has allowed thicker cloud cover to persist across the northern portion of our forecast area this afternoon.
641 PM EST Wed Nov 22 2017 A cold front will continue to move away from the area this afternoon. High pressure will build into the area tonight and last half of the week.
520 PM CST Wed Nov 22 2017 A massive upper level ridge of high pressure continues to dominate the weather pattern across the region. This will continue Thanksgiving with highs even a few degrees warmer than today. In fact, near record highs expected in the lower 70s at some locations.
/issued 421 AM CST Wed Nov 22 2017/ The upper level ridge that has taken up residence over SOCAL will continue to dominate our weather over the holiday weekend.
At the surface, weak low pressure is located across central ND with warm front dropping south through central SD, and cold front extending back into MT and southern AB. On Thanksgiving, upper ridge axis will move into the Northern Plains with even warmer temps expected, 70s on the SD plains.
The clouds move east with more sunshine by Thanksgiving afternoon, along with highs into the lower 40s.
A repeat performance is likely tomorrow as a strong upper level ridge of high pressure over Baja California remains in control.
High pressure from Kansas to northwest Illinois is providing a cool air mass over the area with just a scattering of clouds this afternoon. Skies will clear going into the evening and tonight as this high moves over the Ohio Valley. Looking for some clouds to come in from the northwest possibly by morning from a low pressure system upstream over the Upper Great Lakes. As stated in the synopsis, high pressure will be slifing eastward across the Ohio Vally tonight keeping skies clear across the region. Had a little bit of an issue as forcast soundings indictae that temperatures drop just below freezing given the inversion that will set up in the boundary layer. High pressure will continue to move off to the east and southeast giving a southwest flow on the backside of the high late Thursday and Thursday night.
Think there could be some brief clearing in some areas behind the low, but the HRRR and RAP both develops some stratus and maybe fog along the baroclinic zone. Warm air advection starts early, with both 925mb and 850mb temps into the low teens across our southwestern counties. Have some highs approaching 50 in the southwest, but further north and east we will still be in the cooler air and clouds.
An unseasonably strong high pressure ridge (595 dm centered south of San Diego) continues to provide dry subsident NW flow aloft, with cirrus rotating over the ridge axis into the plains. Upper 30s will be common Thanksgiving morning, with many locales south and west of Dodge City holding in the lower 40s. Unseasonably warm (near record high) temperatures in the lower to mid 70s will be enjoyed (the record high at Dodge City is 74/2005).
Cheyenne Ridge and areas near the foothills should remain breezy into the evening while other areas decouple. Still some very light snow over the higher peaks and we may not lose this entirely, but a continued gradual decrease is expected with no accumulation. The airmass will be a few degrees warmer, putting Denver near the records for both the date (74)and for Thanksgiving Day (73). Biggest variable is probably the thickness of the high clouds.
Low pressure will slowly approach the Florida west coast through the period.
617 PM EST Tue Nov 7 2017 High pressure will remain in control across the Great Lakes region through Wednesday night.
916 PM CST Tue Nov 7 2017 Latest surface map analysis indicates the cold front is now located from southeast Manitoba, slicing through the Turtle Mountains, and bowing across central North Dakota and back into central Montana. This is the leading edge of the cold front which will continue to progress south overnight. The high temperature forecast for Wednesday ranges from the upper teens north, to the upper 20s south. Normal seasonal high temperatures are in the low/mid 40s.
729 PM EST Tue Nov 7 2017 High pressure will build in from the west and crest over the area tonight.
High pressure continues to settle southeast into the region this evening. Lows appear to be on track to bottom out in the low 20s away from the lake, and mid 20s near the lakeshore. Light winds and clear skies are expected overnight tonight as high pressure moves through the area. By mid morning on Wednesday, winds will become southwesterly as the high moves off to the east. High pressure is expected to slide southward across the northern and central Plains region tonight into Wednesday. Below normal temperatures are expected to continue, with lows tonight dropping into the lower 20s in most areas. Highs Wednesday should reach the lower to middle 40s.
/issued 307 PM CST Tue Nov 7 2017/ Cool and overcast conditions persist across the Mid-South this afternoon in the wake of the early morning cold front. The flow aloft is quasi-zonal with a strong upper-tropospheric jet core extending from the Central Plains into the lower Ohio River Valley.
/issued 356 PM EST Tue Nov 7 2017/ Generally benign pattern will continue through the next few days as high pressure sits over the Atlantic.
808 PM EST Tue Nov 7 2017 Weak low pressure will track to the east south of New England tonight.
The high temperature forecast for Wednesday ranges from the upper teens north, to the upper 20s south. Normal seasonal high temperatures are in the low/mid 40s.
/issued 229 PM CST Tue Nov 7 2017/ Cold front has just about edged through our extreme southern zones at this hour but the cooler air lags the front several miles north of the wind shift, closer to the I-20 corridor and even north of there with temperatures in the 50s across portions of the Middle Red River Valley late this afternoon. For the overnight hours, isentropic lift should become the main precip process even though it may not begin until the overnight hours and mainly west of our region just ahead of the best forcing in association with the upper level trough which will be our main weather maker during the day Wednesday. This trough will quickly eject into the Plains Wed morning with large scale lift quickly expanding eastward into the Middle Red River Valley during the day.
945 PM EST Tue Nov 7 2017 High pressure centered over the central plains will extend across the Lower Great Lakes through Wednesday.
1022 PM EST Tue Nov 7 2017 A cold front near the north part of the forecast area will sink southward and through the area tonight.
Main focus tonight continues on the cold front slowly trudging southward through our area. Cooler air has begun to filter in behind the front, with temps in the northern counties already in the low to mid 50s. Prior discussion below: Tonight through Tuesday: Latest Rap and Satellite imagery showed flat ridging through the atmosphere. A slow moving cold front was slowly making its way across the region. Looking at temperatures lows will be in the lower 50s north to the lower 60s southeast.
538 PM CST Tue Nov 7 2017 Updated for 00Z aviation discussion 00Z TAF discussion: A weak cold front, extending from NMM to ESF, will continue to slowly move south, finally pushing through HBG by 08/04Z. /26/ Tonight through Tuesday: Latest Rap and Satellite imagery showed flat ridging through the atmosphere. A slow moving cold front was slowly making its way across the region. Looking at temperatures lows will be in the lower 50s north to the lower 60s southeast.
939 PM CST Tue Nov 7 2017 Low clouds, drizzle of light fog remained entrenched over the Midsouth this evening, north of a cold front that extended from south of Jackson MS to north of Birmingham AL. /issued 307 PM CST Tue Nov 7 2017/ Cool and overcast conditions persist across the Mid-South this afternoon in the wake of the early morning cold front. The flow aloft is quasi-zonal with a strong upper-tropospheric jet core extending from the Central Plains into the lower Ohio River Valley.
Chattanooga Airport, TN 52 58 46 61 / 50 20 40 20 Knoxville McGhee Tyson Airport, TN 49 55 44 58 / 50 20 20 20 Oak Ridge, TN 48 55 44 58 / 40 10 20 10 Tri Cities Airport, TN 46 51 42 55 / 50 30 20 10.
Short range models are in better agreement on the projected track and speed associated with this upper level trof.
After 3 mornings with fog/stratus and a weakening high pressure ridge across the local area, persistence would argue for another round overnight. Good boating conditions with weakening high pressure ridge over the waters.
643 PM EST Tue Nov 7 2017 Issued 1225 AM EST Tue Nov 7 2017 High pressure will build into the Great Lakes for most of this week but temperatures will be cool with highs mainly in the 40s and lows in the upper 20s to lower 30s.
Warm westerly flow prevailed across the area today with high temperatures rising into the mid 80s inland with an afternoon sea breeze keeping the coast cooler with highs reaching the upper 70s. Aloft high clouds were spilling across the area from NW around a dirty ridge over the GOMEX, with some mid clouds edging southward toward SE GA in association with the front to the north. Winds were near calm this evening after sunset with min temps on track to fall into the low to mid 60s inland. High pressure will extend across the local Florida waters tonight as a weakening front settles southward over north GA.
539 PM CST Tue Nov 7 2017 The weather maker for this TAF period will be the cold front which is currently located from a Rocksprings (KECU) to Boerne (K5C1) to Randolph AFB (KRND) to Gonzales (KT20) line as of 23z and it is making quick progress south. At 2 PM the cold front was located near a Austin to Fredericksburg line. As the main trough axis and forcing swings through the region Wednesday evening a band of elevated convection is indicated by models to move east out of the Hill Country, through the I-35 corridor, and into eastern counties.
KCRP radar indicates the cold front has moved into the northern portion of the forecast area, from Victoria to Choke Canyon Lake to Dilley. No changes made to PoPs for Wednesday but lift may not reach the area until the afternoon with the approaching short wave trough. Cold front just south of the I-10 corridor continues to move south at around 15 mph.
The only echoes currently on KBYX Doppler radar are diminishing in the vicinity of the Lower Keys and in the Gulf waters well offshore from Mainland Monroe county. The evening local sounding indicated a very small increase in lower level moisture, a slight shift of the northeast breezes through the lowest 10000 feet, and a persistent inversion now based closer to 7000 feet.
644 PM EST Tue Nov 7 2017 Weak low pressure will track to the east south of New England tonight.
1008 PM EST Tue Nov 7 2017 Wave of low pressure passes south of the area Wednesday. Cooler air moves in for the end of the work week. Area of low pressure currently pushing through the mountains of southern WV and southwestern VA. Another weak low pressure wave brushes by to the south on Wednesday. Strong high pressure builds and shifts across the Upper Great Lakes which, combined with northwesterly flow aloft, brings in the coldest temperatures yet this year.
634 PM EST Tue Nov 7 2017 Wave of low pressure passing just south of the area today. Cooler air moves in for the end of the work week. Area of low pressure currently pushing through the mountains of southern WV and southwestern VA. Another weak low pressure wave brushes by to the south on Wednesday. Strong high pressure builds and shifts across the Upper Great Lakes which, combined with northwesterly flow aloft, brings in the coldest temperatures yet this year.
557 PM CST Tue Nov 7 2017 Mid afternoon surface map shows 1033 mb high pressure over se SD while 1012 mb low pressure was in western VA. A weak short wave will exit southeast IL during this evening, while a stronger elongated short wave trof drops southward over northern and central IL during tonight. Brisk ne winds this afternoon will diminish after sunset and allow for a cooler night tonight. Lows to reach the upper 20s nw of I-55 and mid 30s in southeast IL, with subfreezing temps getting near or just south of I-72. High pressure over the northern plains to settle into central/nw IL by Wed afternoon and bring more sunshine and light winds but chilly temperatures.
504 PM MST Tue Nov 7 2017 Deep westerly flow is in place in the mid and upper levels across the Central High Plains, with a positively tilted trough extending from the Great Lakes to the Great Basin. This afternoon-Tonight: The mid/upper level trough over the Great Basin is expected to move southeast overnight (some timing differences in models).
704 PM EST Tue Nov 7 2017 Low pressure will move east tonight, followed by weak high pressure for Wednesday.
/issued 346 PM CST Tue Nov 7 2017/ (Tonight and Wednesday) Expect a wet and much cooler pattern during the next 24 hours. Could have a window for patchy fog to develop across the area south of I- 20 to a Mertzon-San Angelo-Brownwood line overnight, given an expected combination of clearing skies, recent rainfall and residual high moisture in the lower levels.
918 PM CST Tue Nov 7 2017 Temperatures have fallen into the mid to upper 20s this evening, and should continue a slow fall into the low 20s overnight.
944 PM EST Tue Nov 7 2017 High pressure will remain in control across the Great Lakes region through Wednesday night.
This is the leading edge of the cold front which will continue to progress south overnight. The high temperature forecast for Wednesday ranges from the upper teens north, to the upper 20s south. Normal seasonal high temperatures are in the low/mid 40s.
930 PM CST Tue Nov 7 2017 Minor changes made to overnight lows, mainly across northern Beltrami and souther Lake of the Woods counties where temps will likely be the coldest with the higher snow depths. Light snow will spread into areas north of highway 2 by later Wednesday morning, dropping into the highway 200 corridor during the afternoon. Still looking like an inch or so of snow along the highway 2 corridor, tapering down to almost nothing over the southern Red River Valley. A broad upper level trof slides south out of Canada to start the period with chances for light precipitation and cooler temperatures.
VFR conditions will gradually deteriorate over the next 12-16 hrs as an upper trough making landfall in SoCal quickly translates across the sw CONUS and moves thru West Texas and Southeast New Mexico Wed. As the trough moves into the area, rain is forecast to develop, coincident w/lower cigs/vsbys. Cigs/vsbys should improve slightly behind the trough, but still be mainly MVFR by the end of the forecast period. well not so fine as the cooler airmass stalled and temps soared into the 80s in Pecos and Fort Stockton.
For 06z Aviation discussion below At mid afternoon the region was under clear skies and light winds due to high pressure building in from the west. A strong short wave will rotate through the low and dip into northern MN late tonight and into central and southern MN and west central Wisconsin late Wednesday afternoon and evening to generate some light snow. There will be some fairly strong FGEN associated with this cold front and so could see a quick burst of snow of an inch or less. Issued at 3:14 PM CST Tue Nov 7 2017 There will be a very strong cold front moving across the region with temperatures dropping considerably as the front goes through and bring the coldest air of the season so far.
For 00Z Aviation discussion below At mid afternoon the region was under clear skies and light winds due to high pressure building in from the west. A strong short wave will rotate through the low and dip into northern MN late tonight and into central and southern MN and west central Wisconsin late Wednesday afternoon and evening to generate some light snow. There will be some fairly strong FGEN associated with this cold front and so could see a quick burst of snow of an inch or less. Issued at 3:14 PM CST Tue Nov 7 2017 There will be a very strong cold front moving across the region with temperatures dropping considerably as the front goes through and bring the coldest air of the season so far.
825 PM EST Tue Nov 07 2017 A stalled cold front across southern NC will finally push south of the area tonight, as high pressure wedges in from the NE. Strong and chilly high pressure will build in from the north late this week.
VFR conditions will gradually deteriorate over the next 6-10 hrs as an upper trough over SoCal quickly translates across the sw CONUS and moves thru West Texas and Southeast New Mexico Wed. As the trough moves into the area, rain is forecast to develop, coincident w/lower cigs/vsbys. well not so fine as the cooler airmass stalled and temps soared into the 80s in Pecos and Fort Stockton.
NAM soundings would also suggest the potential for some wet-bulbing late tonight that might result in some light freezing rain across parts of western Oklahoma. Ground temperatures still quite warm, and with ambient temperatures at or above freezing tomorrow, any snow that does accumulate will quickly melt and not expected to create any significant travel issues.
High pressure centered over South Dakota with a ridge axis that extends east across the Great Lakes will provide dry cool weather along with mainly clear skies through Wednesday night. Highs will be slightly below average in the low to mid 40s.
641 PM EST Tue Nov 7 2017 Aviation A high pressure ridge will continue in control of the weather tonight through Wednesday evening and bring fair and seasonably cool weather.
942 PM EST Tue Nov 7 2017 Low pressure will move east tonight, followed by weak high pressure for Wednesday.
As a ridge of high pressure continues to build into the area, the pressure gradient will tighten along the foothills. Tomorrow still expecting a weak backdoor cold front will washout as it move into the area.
938 PM CST Tue Nov 7 2017 Latest surface map analysis indicates the cold front is now located from southeast Manitoba, slicing through the Turtle Mountains, and bowing across central North Dakota and back into central Montana. This is the leading edge of the cold front which will continue to progress south overnight. The high temperature forecast for Wednesday ranges from the upper teens north, to the upper 20s south. Normal seasonal high temperatures are in the low/mid 40s.
Latest CONSshort advertised about 1-2 degrees cooler across the board than forecast for the low T and decided to go with it based off trends. /ISSUED 539 PM CST Tue Nov 7 2017/ The weather maker for this TAF period will be the cold front which is currently located from a Rocksprings (KECU) to Boerne (K5C1) to Randolph AFB (KRND) to Gonzales (KT20) line as of 23z and it is making quick progress south. At 2 PM the cold front was located near a Austin to Fredericksburg line. As the main trough axis and forcing swings through the region Wednesday evening a band of elevated convection is indicated by models to move east out of the Hill Country, through the I-35 corridor, and into eastern counties.
411 PM PST Tue Nov 7 2017 Weak high pressure over the region will start to breakdown through Wednesday as a weak cold front approaches the area.
629 PM EST Tue Nov 7 2017 A cold front near the north part of the forecast area will sink southward and through the area tonight.
451 PM MST Tue Nov 7 2017 00Z TAF CYCLE Stream of mid and upper level sub-tropical moisture ahead of an upper level trough dropping into southwest CO continues across NM this evening. Meanwhile, a backdoor sfc cold front is moving slowly wwd toward the RGV. Around 2 to 4 inches of snow with locally higher amounts are expected across the high peaks of the Sangre de Cristos, with lesser accumulations across the northeast plains.
929 PM EST Tue Nov 7 2017 Low pressure will move eastward along a stationary front draped across the Carolinas this afternoon and tonight, and out to sea Wednesday.
The air being pulled out of the Paradise valley is much warmer than the Shields valley air so its unable to displace it, and thus not only have temperatures been fluctuating, so far wind speeds have been subdued too compared to the other gap wind area around Nye where gusts are around 50 mph right now with temperatures in the lower 30s. As a ridge of high pressure continues to build into the area, the pressure gradient will tighten along the foothills. Tomorrow still expecting a weak backdoor cold front will washout as it move into the area.
705 PM EST Tue Nov 7 2017 High pressure centered over the central plains will extend across the Lower Great Lakes through Wednesday.
930 AM EST Thu Nov 23 2017 High pressure will build over the area through Friday.
/17/ Today through Tonight: Latest Rap and Satellite imagery showed an upper trough over the Mississippi Valley with high pressure over the Lower Mississippi Valley. For today into tonight the upper trough axis will push off to the east as upper ridging builds over the forecast area from the west. Lows for tonight with some additional radiational cooling, light winds and clear skies overnight lows will be from the lower to middle 30s. Strong upper ridging over the SW Conus and troughing over the eastern CONUS will result in upper NW flow over our region.
Temperatures range from the upper 70s in rain cooled areas to the lower 80s elsewhere. An area of low pressure over the northeastern Gulf of Mexico will approach the northwest coast of Florida this afternoon.
High pressure will dominate the weather through Friday. At the same time airmass will start to moderate over the region, allowing for slightly warmer afternoon highs today and even warmer readings on Friday. Ridges and more unsheltered areas may see a slight increase in low temperatures tonight, but still likely below freezing. The models depict a gradual amplification of a trough centered over the Great Lakes heading into the weekend.
1023 AM EST Thu Nov 23 2017 High pressure will build across the area today allowing mostly sunny skies but cool temperatures. A very weak upper trof will move across the region tonight bringing some clouds and maybe a few flurries in the mountains.
445 AM CST Thu Nov 23 2017 Happy Thanksgiving! An upper level ridge was positioned over the western U.
600 AM CST Thu Nov 23 2017 Upper level trof over the Ohio river valley to pull away from IL during today, as a weak disturbance exits eastern IL during this morning.