Aikyam-Lab/Synoptic-Bench huggingface dataset:
545 PM MDT Sun Jun 25 2017 Aviation Section Updated Upper level high pressure ridging over the region will bring hot and dry conditions to the region Monday.
Surface analysis this afternoon showed high pressure squeezed across the lower Ohio and Tennessee River Valleys. Meanwhile, a secondary cold front lies across central Illinois and central Indiana, pushing southeast toward our region. The aforementioned cold front will drop through our area this afternoon, bringing with it another invigorating, crisp push of Canadian air for the short term period.
Northwesterly flow aloft continues as an upper ridge is over the desert southwest and a broad trough is over the Great Lakes area. Shouldn't be very strong or last very long with the upper ridge continuing to push in and the loss of the suns heat. The upper ridge axis will push into the state Monday for warmer and drier conditions area wide as the surface upslope flow will weaken. Isolated showers/weak storms are still possible mainly over the higher terrain south of I70, and perhaps over the far eastern plains where CAPE is progged to be in the 1500-2000 J/kg and marginal shear.
1105 PM EDT Sun Jun 25 2017 Late evening surface analysis depicts a cold front moving into interior southeast Georgia, with a reinforcing cold front moving through the northeastern U. a trough is deepening over the eastern half of the nation, pushing Atlantic ridging east of the Bahamas. Debris clouds and additional mid and high cloudiness associated with the front and approaching upper trough will linger overnight, with lows generally in the low to mid 70s for most locations. A cold front will move over the terminals by midday on Monday, with showers and thunderstorms developing during the afternoon hours. A cold front will cross the southeast Georgia waters overnight, with northerly winds developing towards sunrise, becoming northeasterly during the morning hours. This front will move over the northeast Florida waters on Monday as high pressure builds to the northwest of our region.
dry high pressure in control. Chattanooga Airport, TN 61 83 62 82 / 0 0 10 20 Knoxville McGhee Tyson Airport, TN 59 80 59 79 / 0 0 10 20 Oak Ridge, TN 58 80 58 81 / 0 0 10 20 Tri Cities Airport, TN 54 77 54 76 / 0 10 10 20.
901 PM EDT Sun Jun 25 2017 High pressure will continue to extend into the area from the west tonight through Monday.
MIC Tonight and Monday: The next 24hrs will be rather quiet and on the cooler side for late June standards. This will work in tandem with the cooler/drier air filtering through the forecast area behind the cool front.
752 PM MST Mon Nov 20 2017 We are sending out a quick update to extend the high wind warning through 11pm. We sent a quick update to let the High Wind Warning expire for portions of Southeast Wyoming. Should see about 3-6 inches over the higher peaks later tonight into Tuesday morning before it tapers off. Much cooler east of the mtns Tuesday as the front backs up against the mtns. The front should begin to retreat back east Tuesday night as lee troughing develops over the high plains.
Tuesday will be mild with plenty of sunshine then a cold front will cross the area late Tuesday night accompanied by some rain and snow showers.
519 PM CST Mon Nov 20 2017 Not much change to forecast trends during the period with timing of cold front tonight the main concern. A cold front was pushing into western parts of the Dakotas at 20Z with surge of warm air out ahead of the front over the central plains.
603 PM EST Mon Nov 20 2017 A cold front will bring the next chance for precipitation on Tuesday night. Warm advection on southerly flow and limited insolation are progged to drive Tuesday high temperature a few degrees above the seasonal averages as the aforementioned trough advances. That cold frontal system is timed plough over the Upper Ohio on Tuesday night. Any post frontal snow accumulation should be thus be limited to the I 80 corridor and ridges. High pressure will then ensure a dry midweek and Thanksgiving holiday, but sub average temperatures are progged to be maintained under broad Eastern CONUS troughing. More active conditions look to return into the extended as a longwave trough starts to become established over the eastern CONUS.
Temperatures are running several degrees warmer this afternoon across much of the central California interior compared to 24 hours ago and this is a trend we can expect for the next few days.
617 PM EST Mon Nov 20 2017 High pressure today yields to southwest flow tonight and Tuesday. Cold front crosses Tuesday night. High pressure again through Thanksgiving.
A cold front is expected to move across the region overnight with a return to near normal temperatures this time of year on Tuesday. Highs will be nearly 25 degrees cooler than today, but will still be near or a few degrees above average with highs in the upper 40s and lower 50s and lows tonight in the 30s. Have, however, kept things dry as confidence in any precipitation is low with poor QPF correlation between models and the lowest few thousand feet of the column near the surface remain dry with 50% or less RH.
A cold front is expected to move the area Tuesday morning/afternoon with winds shifting around to the northwest behind the front.
905 PM EST Mon Nov 20 2017 A cold front will bring the next chance for precipitation on Tuesday night. Warm advection on southerly flow and limited insolation are progged to drive Tuesday high temperature a few degrees above the seasonal averages as the aforementioned trough advances. That cold frontal system is timed plough over the Upper Ohio on Tuesday night. Any post frontal snow accumulation should be thus be limited to the I 80 corridor and ridges. High pressure will then ensure a dry midweek and Thanksgiving holiday, but sub average temperatures are progged to be maintained under broad Eastern CONUS troughing. More active conditions look to return into the extended as a longwave trough starts to become established over the eastern CONUS.
Southwest flow aloft will push another warm front through the region late tonight and Tuesday with rain.
At the surface and in the lower to middle levels(Surface-700 mb), latest IR imagery overlaid with marine and land surface observations and analysis as of 800 pm detail the center of 1025 mb plus ridging located just east of Cape Hatteras. There is a weak frontal boundary analyzed just south of the Lower and Middle Florida Keys westward into the SE Gulf of Mexico.
/issued 132 PM CST Mon Nov 20 2017/ After a quiet night an upper level trough moving across southern Canada will drag a dry cold front through the forecast area during the day Tuesday.
So, all in all, some locations as compared to the afternoon forecast package will have lows slightly warmer than previously forecasted while some locations will have overnight lows near previous forecasted values. High pressure will keep VFR going through the next 24 hours at BNA, CKV, and MQY. Otherwise, all sites will have very light SSE winds overnight, becoming S around 9KT with a few gusts around 16KT on Tuesday as a dry cold front approaches.
/issued 349 PM CST Mon Nov 20 2017/ A little cooler than expected with the cirrus slowing a bit to 35KTS with amplified low now on Gulf coast.
Frontal boundary extending from the srn GOMex acrs the FL Straits will dissipate, though its remnant H100-H70 moisture band/H85-H70 theta-e ridge will begin to drift back to the north as mid lvl winds veer to the SE. The center of a large hi pres ridge blanketing the ern CONUS will drift off the Carolina Coast overnight, maintaining a gentle to moderate easterly breeze while doing so. While winds are expected to diminish slightly overnight as the ridge pushes into W Atlc, overall conditions will remain poor enough to continue latest advisory/cautionary statements overnight.
1015 PM EST Mon Nov 20 2017 Dry weather will continue tonight into the first part of Tuesday as southerly flow increases on the back side of retreating high pressure.
1006 PM EST Mon Nov 20 2017 High pressure will prevail into Tuesday.
However, the low level jet may kick in later tonight bringing in breezy conditions and possibly some winds gusts across KSJT and KABI tonight beginning around 5Z. Otherwise, a cold front is expected to pass through the region on Tuesday. Warm again on Tuesday, despite the passage of a cold front right around noon.
Cold front will arrive around 12Z with increasing north winds. High clouds from that system can be seen getting picked up by northwest flow aloft from the large ridge of high pressure over the Southwest, providing a thin veil of cirrus across West Texas. High temperatures have been left unaffected due to enough filtered sunshine and dry airmass at the surface with dewpoints on the single digits and teens on the Caprock, into the low 20s just to the east off the Caprock. Short wave trough later tonight will help reinforce a surface cold front expected to move south out of the Texas Panhandle early Tuesday morning and through the South Plains by early afternoon.
551 PM EST Mon Nov 20 2017 Dry and cool high pressure over the region will move offshore tonight. Moisture will return beginning Tuesday as weak low pressure develops over the Gulf of Mexico and brings isolated showers to the region Tuesday and Tuesday night.
706 PM EST Mon Nov 20 2017 Dry and cool high pressure over the region will move offshore tonight. Moisture will return tomorrow as weak low pressure develops over the Gulf of Mexico and brings isolated showers to the region.
700 PM EST Mon Nov 20 2017 High pressure will drift offshore late tonight and Tuesday. A weak area of low pressure will develop off the Florida coast on Tuesday, and then track quickly northeastward along the Southeast coast Tuesday night.
642 PM EST Mon Nov 20 2017 High pressure today yields to southwest flow tonight and Tuesday. Cold front crosses Tuesday night. High pressure again through Thanksgiving.
717 PM EST Mon Nov 20 2017 Cirrus across the higher terrain has mostly exited the Lake Cumberland region, but more will be on the approach later tonight. Eastern valleys will keep cooler temperatures locked in place through later tonight or potentially early Tuesday morning with later arrival of the increasing pressure gradient. This will result in a deepening trough dropping into the Ohio Valley by Tuesday night. Consequently and with support from guidance went warmer in the west. Unfortunately winds will make it seem a little cooler than that.
Current temp trends in association with GFS LAMP hrly projected temp guidance values showing that overnight low temps might be a few degrees warmer than previously forecasted. High pressure will keep VFR going through the next 24 hours at BNA, CKV, and MQY. Otherwise, all sites will have very light SSE winds overnight, becoming S around 9KT with a few gusts around 16KT on Tuesday as a dry cold front approaches.
A cold front will invade New Mexico from the north early Tuesday morning with gusts of 25 to 35 kt developing in the eastern plains of the state. A ridge of high pressure will cross the southwest US this week keeping the weather dry. A back door cold front will produce gusty northeast winds across the eastern plains on Tuesday with speeds peaking near 40 mph along the eastern border. After cooler temperatures on Tuesday, readings will rebound during the latter half of the work week.
The main adjustment made was to sky grids to incorporate the high cloud cover moving in from the northwest. A cold front, currently over ND/MT, will slide quickly south and east over the Plains, and will sweep thru our area on Tuesday. A cold front is expected to move the area Tuesday morning/afternoon with winds shifting around to the northwest behind the front.
620 PM EST Mon Nov 20 2017 High pressure moves off the Mid Atlantic coast tonight and Tuesday.
1036 PM EST Mon Nov 20 2017 Dry and cool high pressure over the region will move offshore tonight. Moisture will return tomorrow as weak low pressure develops over the Gulf of Mexico and brings isolated showers to the region.
455 PM MST Mon Nov 20 2017 Fast moving Pacific wave will work across the northern and central zones tonight as it slides down the front side of strengthening Great Basin ridge. Dry and mild conditions will be in place through much of the Holiday weekend as a strong ridge of high pressure remains parked across the western U.
Low cloud development should remain favored east of the I-35 corridor given south-southwesterly flow in the low levels overnight. Winds along I-35 veer to a more westerly direction ahead of a cold front tomorrow, with the front set to move through in the 00Z-02Z time frame. Warmer low temperatures are expected tonight, though will go slightly below guidance due to an initially drier airmass across most areas. Warmer, above normal, high temperatures are expected on Tuesday ahead of a cold front that moves across our area late afternoon into evening.
536 PM CST Mon Nov 20 2017 High pressure will continue to slide off to the east through the period keeping southerly flow in place. A cold front will move through the majority of the state Tuesday afternoon resulting in a wind shift but no rain.
Until a cold front that is making it way through northern Montana makes its way down, wind gusts will remain 50 to 60 mph around Livingston, Big Timber, and Nye. Given that the High Wind Warning goes until 6 PM which will be around the time the front should be arriving, will keep the Warning going until the expiration time. Tonight as the cold front drops down into the area, rain quickly turning over to snow as the cold air works in. Much of the area favored is the higher hills south and east of Billings. The operational model is still on the higher end of the ensemble envelope. The cold front will retreat during the morning tomorrow. Temperatures will remain cooler tomorrow with highs in the 40s.
923 PM EST Mon Nov 20 2017 High pressure moves off the Mid Atlantic coast tonight and Tuesday.
Gusty northwest winds expected Tuesday in wake of a cold front. Strong cold front will pass across the near shore waters Tuesday morning resulting in the winds shifting to the northwest and strengthening once again after a brief 1-2 hour lull.
1026 PM EST Mon Nov 20 2017 Dry and cool high pressure over the region will move offshore tonight. Moisture will return tomorrow as weak low pressure develops over the Gulf of Mexico and brings isolated showers to the region.
1008 PM EST Mon Nov 20 2017 High pressure today yields to southwest flow tonight and Tuesday. Cold front crosses Tuesday night. High pressure again through Thanksgiving.
720 PM EST Mon Nov 20 2017 High pressure will drift offshore late tonight and Tuesday. A weak area of low pressure will develop off the Florida coast on Tuesday, and then track quickly northeastward along the Southeast coast Tuesday night.
Any rain, with the next cold front, looks to hold off until later Tuesday night. A strong short wave trough will dive south-southeast through North Texas Tuesday afternoon and then to the Texas coast late Tuesday night. There will also be increasing low level convergence along the coast in advance of the next cold front that will move through the area during the overnight hours Tuesday night. The short wave trough will interact with available moisture to produce scattered showers and isolated thunderstorms from the coastal plains into the coastal waters.
547 PM MST Mon Nov 20 2017 Allowed the high wind warning to expire at 5 PM.
1023 PM EST Mon Nov 20 2017 High pressure will drift offshore late tonight and Tuesday. A weak area of low pressure will develop off the Florida coast on Tuesday, and then track quickly northeastward along the Southeast coast Tuesday night.
1022 PM EST Mon Nov 20 2017 High pressure will drift offshore late tonight and Tuesday. A weak area of low pressure will develop off the Florida coast on Tuesday, and then track quickly northeastward along the Southeast coast Tuesday night.
Strong high pressure aloft will follow for the middle and latter portions of the week.
For northwest Montana, lingering rain showers might lead to pockets of light freezing drizzle overnight, but confidence is low on freezing drizzle.
534 PM CST Mon Nov 20 2017 A low level jet ahead of an approaching cold front will aid in producing strong winds through much of the night tonight. Despite the strong south-southwest winds ahead of an approaching cold front, moisture content of the air mass will only marginally increase. Low temps tonight will be held warmer than normal due to windy conditions, despite mostly clear skies. Highs on Tuesday will likely come early in the day, as the cold front reaches I-55 by around 16z/10am, then exits to the southeast by 21z/3pm. Morning/daytime highs will range from the low 40s near Galesburg, to the low 50s south of I-70. Clearing skies will help low temps Tuesday night dip into the low to mid 20s.
Chattanooga Airport, TN 39 60 41 57 / 0 10 10 0 Knoxville McGhee Tyson Airport, TN 35 59 41 54 / 0 10 10 0 Oak Ridge, TN 36 59 41 54 / 0 10 10 0 Tri Cities Airport, TN 30 57 38 52 / 0 10 10 10.
Lows will be in the mid to upper teens across the International Border and Arrowhead region while temperatures remain in the low twenties across northwestern Wisconsin. A potent low pressure system will move from southern Manitoba east to eastern Ontario tonight, skating just north of the US/Canadian border. Behind this system a cold front will surge through the forecast area this evening. This will produce strong northwest winds behind the cold front overnight tonight and Tuesday morning.
These light winds or calm winds so far have allowed temperatures to drop into the lower to mid 30s in some locations, especially in northeastern Alabama and portions of southern Middle Tennessee. Some radiational cooling over the next few hours could drop the temperatures into the lower to mid 30s in some locations in Moore/Franklin counties in Tennessee or in some areas in northeastern Alabama. The above noted disturbance to our NW will result in amplification of the northern stream trough. The amplifying trough will help drive a dry cold front across the Tennessee Valley Tuesday night, bringing more cold air back to the region for the mid week.
606 PM EST Mon Nov 20 2017 High pressure will prevail into Tuesday.
Temperatures are running several degrees warmer this afternon across much of the central California interior compared to 24 hours ago and this is a trend we can expect for the next few days.
549 PM CST Mon Nov 20 2017 Dry cold front has moved through western and central ND. Temperatures are already in the lower to mid 20s far northwest, and will continue to fall through the night across the forecast area. The strong cold front extending from the clipper across southeast Manitoba has cleared all of western and central North Dakota as of 21 UTC. A much colder Tuesday is expected area wide as cold high pressure builds across western and central North Dakota in the wake of the cold front today.
506 PM MST Mon Nov 20 2017 We sent a quick update to let the High Wind Warning expire for portions of Southeast Wyoming. Should see about 3-6 inches over the higher peaks later tonight into Tuesday morning before it tapers off. Much cooler east of the mtns Tuesday as the front backs up against the mtns. The front should begin to retreat back east Tuesday night as lee troughing develops over the high plains.
621 PM EST Mon Nov 20 2017 A warm front will bring some light snow or flurries to central New York late this afternoon, followed by clearing tonight. Tuesday will be mild with plenty of sunshine then a cold front will cross the area late Tuesday night accompanied by some rain and snow showers.
Recent temperature trends have been slower to warm this afternoon, and as as result the highs have been gradually adjusted downward only a few degrees. Large upper high and ridge remaining anchored across the central Rockies/Great Basin area during the latter half of the week into the weekend; a pattern suggestive of high CAPE and low shear/weak steering flow for any convective development.
An upper level low is currently located across northeastern Oklahoma/southeastern Kansas this afternoon. The low will slowly slide to the east tonight and tomorrow. The low will be over the area on Wednesday and will continue to see scattered storms and a few storms occur at times.
1159 PM CDT Tue Jul 4 2017 The upper level low spinning to our south will continue to be the main factor in our weather through tomorrow evening. For the rest of this afternoon and into the evening hours, the I-70 corridor has been in a bit of a deformation area with the low to the south within the overall upper ridge across the central to western portions of the country. But given ample low level moisture and weak forcing associated with the low, can't rule out showers and maybe a few storms along and south of I-70. For tomorrow, the upper low will have moved into central MO and think a similar scenario will unfold across the eastern half of the forecast area that occurred over western MO and eastern KS today.
957 PM EDT Tue Jul 4 2017 Typical summer pattern will persist this week with Bermuda high pressure extending from the Western Atlantic into the Gulf of Mexico and a lee-side trough in the forecast area. The upper ridge, to our south and east, will build northward some over the forecast area. Models continue to indicate a strong ridge over the W CONUS, with upper trough deepening and shifting east into the E CONUS.
By Wednesday afternoon, the atmosphere will destabilize ahead of another slow moving low pressure system, so VCTS will be included for all sites.
A cold front will push through early in the weekend. Dry weather, lower humidity, and slightly cooler temperatures will follow. High pressure moving off the New England coast will pivot the (quasi-stationary-warm) frontal boundary to more of a NW-SE orientation on Wed.
831 PM EDT Tue Jul 4 2017 High pressure will retain control through Wednesday, providing the region with generally rain-free weather, pleasant temperatures, and fairly low humidity levels. High pressure slides to the east and allow a slow return of moisture to the area. Initially, best moisture return is over western NY as the low level southwest winds comes up along the lake plain.
630 PM CDT Tue Jul 4 2017 The upper level low spinning to our south will continue to be the main factor in our weather through tomorrow evening. For the rest of this afternoon and into the evening hours, the I-70 corridor has been in a bit of a deformation area with the low to the south within the overall upper ridge across the central to western portions of the country. But given ample low level moisture and weak forcing associated with the low, can't rule out showers and maybe a few storms along and south of I-70. For tomorrow, the upper low will have moved into central MO and think a similar scenario will unfold across the eastern half of the forecast area that occurred over western MO and eastern KS today.
1016 PM EDT Tue Jul 4 2017 Typical summer pattern will persist this week with Bermuda high pressure extending from the Western Atlantic into the Gulf of Mexico and a lee-side trough in the forecast area. The upper ridge, to our south and east, will build northward some over the forecast area. Models continue to indicate a strong ridge over the W CONUS, with upper trough deepening and shifting east into the E CONUS.
705 PM EDT Tue Jul 4 2017 High pressure centered over the northern Great Lakes tonight will drift east Wednesday while maintaining favorable influence on aviation conditions in SE Michigan.
807 PM EDT Tue Jul 4 2017 High pressure will build to the north through early Wednesday morning, then pass off the New England coast later Wednesday into Wednesday night.
744 PM CDT Tue Jul 4 2017 Updates this evening mainly concern thunderstorm coverage with a line of storms weakening out by the Mobridge area, otherwise its mostly isolated coverage to the west and just south of I90.