Aikyam-Lab/Synoptic-Bench huggingface dataset:
720 AM EDT Mon Oct 17 2016 High pressure will maintain warm weather until passage of a mid week cold front. Stronger warm advection ahead of an approaching mid level trough will push temperatures toward record values Tuesday, see the climate section below for details. By late day Tuesday the cold front associated with the trough will bring a chance of showers or a thunderstorm across northwest PA.
An upper level trough will remain over the region with marginal instability today leading to continued chance of showers.
with high pressure at the surface dominating the weather. This will allow for very warm high temperatures in the low to mid 80s over the Valley. and in the 70s in the higher terrain of the mountains. Chattanooga Airport, TN 85 61 86 63 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 85 59 86 62 / 0 0 0 0 Oak Ridge, TN 84 58 85 62 / 0 0 0 0 Tri Cities Airport, TN 81 51 81 57 / 0 0 0 0.
High pressure aloft and at the surface prevail across the Mid-South.
/ISSUED 349 AM CDT Mon Oct 17 2016/ Unseasonably warm and near record high temperatures will continue for a couple more days across much of Southeast Texas with a persistent onshore flow at the surface and ridging in the mid/upper levels.
It has not been as quick to develop as yesterday so we will see how prevalent it actually is but models suggest at least the eastern half of the area could see some LIFR visibilities with MVFR likely to be the lowest in the west. Low temperatures tonight warmer as well, in the upper 50s to near 60 degrees.
Huston Very active upper trough swinging through the PAC NW this morning. This is likely around the time the upper trough will pass through Idaho. Otherwise the higher elevations will see about 1 to 3 inches of additional snowfall tomorrow. Ridging should dominate the weather pattern through the rest of the week with temperatures getting back into the 60s once again.
Afternoon relative humidity values will range from 40 to 60 percent across the coastal plains generally east of Highway 281 from Alice to George West, while areas to the west will see afternoon relative humidity values drop into the low to mid 30s. Despite the low RH values out west, winds should remain below criteria for Elevated Fire Danger weather.
The northerly upper level flow that is in place between the upper ridge over Texas and the upper low over the Atlantic will become northeasterly today as the upper level ridge to the west builds eastward today.
1045 AM EDT Mon Oct 17 2016 Dry high pressure will dominate the region for most of the week with temperatures well above normal. Moisture and rain chances will return by the end of the work week as a cold front crosses the region from the west. Dry and cooler weather will likely set up across the area over the weekend. Beyond that, temperatures are warming nicely and are still on track to reach the lower 80s across the Piedmont, with upper 70s spread about the high terrain. At 200 AM Monday: An upper ridge will progress across the Gulf States and Appalachians today and tonight, while troughs cross the Bahamas and Upper Midwest. As of 200 AM EDT Monday: Broad upper level ridging will extend from the lower MS River Valley to the Carolinas on Tuesday.
Turning much cooler late this week. Dry conditions will be seen across the area Tuesday and Tuesday night as high pressure moves through the Midwest.
Record highs are mostly in the lower 90s, so no records expected to be broken today with forecast highs in the middle to upper 80s.
1058 AM EDT Mon Oct 17 2016 Warm weather will continue across the Ohio valley through Tuesday as high pressure remains off to the southeast and a cold front remains across the midwest. The cold front currently across the midwest will move into the area Tuesday night and then stall across the region.
Precipitation coverage will increase this evening as the last upper level trough moves into the region. The trough moves across the forecast area late Tuesday morning bring at least a tenth of an inch of rain in the lower valleys.
The upper level high, currently centered over east-central Texas, will shift slowly east into Louisiana tonight. Our area will be on the western periphery of this high. With strong insolation and a slight uptick in 850mb temperatures, highs this afternoon are expected to be about a degree warmer than yesterday. Overnight lows are expected to be in the range of 63-68 degrees, with the cooler readings in some of the low-lying areas of our eastern and southern counties.
1157 AM CDT MON OCT 17 2016 Lee trough will result in gusty south-southwesterly winds across central/eastern Kansas Today. This will push a cold front southward through the forecast area tonight into Tuesday morning. Cooler, more seasonable air will settle in behind this front tonight into Tuesday.
941 AM EST Mon Jan 23 2017 High pressure will remain north of the area today. Low pressure will intensify along the mid Atlantic coast tonight and move northeast toward the Gulf of Maine Tuesday.
The large low pressure system that brought severe weather to much of the gulf coast over the last two days continues to push off to the east with high pressure building in across the northern gulf coast today.
Upper trough moves overhead NorCal today with scattered showers and a few thunderstorms.
The track of the storm through Tuesday night still looks consistent with previous model runs, although there remains some differences with position of the low as it deepens over the central plains. The GFS and NAM are more aggressive and further north with the low than the ECMWF. Further south, models are painting a bit more QPF with the cold front as it drops south late tonight through Tuesday morning, so may have to consider expanding Advisories for this areas as well. However, strong northwest downslope flow may still keep accumulations on the lowside near the Colorado border.
1048 AM EST Mon Jan 23 2017 Low pressure will bring rain to much of the area into tonight, with mixed precipitation at times along and north of I-80, and in the higher ridge elevations.
Winds will then pick up again toward the very end of the TAF period around 15 kts out of the SW as a cold front begins to work into the region. /Issued 313 AM CST Mon Jan 23 2017/ An upper ridge over the Panhandles early will gradually push east by late today as a closed upper low tracks east out of the western states and Great Basin region today. The closed upper low will continue moving east across the central Plains states by late Tuesday and the Midwest Tuesday night.
After that, high pressure will build in with valley inversions likely. After that, high pressure will build in with valley inversions likely.
532 AM CST Mon Jan 23 2017 As low pressure pulls off to the east wind speeds will diminish across Arkansas. High pressure over Oklahoma this morning will move into Arkansas this afternoon.
This activity will continue through much of the day as the main mid/upper level low off of the Pacific Northwest coast slides southward down the California coast. By late tonight, the upper level low will weaken off our coast with the trough axis beginning to shift inland. With lingering moisture in place and the proximity of the trough, showers will remain possible over the souther portion of the Central Coast into Tuesday morning. Tuesday afternoon will give way to mostly dry conditions region-wide with breaks in cloud cover also likely as an upper level ridge builds across the eastern Pacific.
Large upper level low spinning off the coast of Washington and Oregon is starting to move southeast, and will open up and extend eastward by late this afternoon. Overnight the axis will move through as a narrow high- amplitude ridge develops just offshore in its wake. By Wed afternoon, this ridge tilts northeast into western Canada, and a trough axis extends from near Lake Hudson back west-southwest into Idaho and Oregon. Highs Tuesday will be cooler, with highs struggling to reach freezing anywhere in the CWA.
After that, high pressure will build in with valley inversions likely.
The general overall upper-level large-scale low pressure trough will persist over the region keeping skies at least mostly cloudy through most of this week.
932 AM EST Mon Jan 23 2017 A strong low pressure system is approaching the mid Atlantic coast with an associated cold front now well east of the Florida peninsula. Strong west winds behind the cold front will continue across west central and southwest Florida today as well as the adjacent coastal waters. Atmosphere remains unstable in the low/mid levels across the forecast area and will see scattered showers over the gulf advecting onshore the west coast of Florida through the early afternoon hours. with shower activity decreasing in areal coverage mid to late day as an U/L trough pushes east of the region.
Upper air analysis reveals powerful upper level low (ULL) over the Southeastern U. By Tuesday, broad ridging will be in place across the Ohio Valley region. Many areas will see mostly sunny skies and highs in the lower 50s.
622 AM EST Mon Jan 23 2017 A strong low pressure center in the western Carolinas this morning will move into eastern North Carolina this afternoon and be off the Mid-Atlantic Coast tonight. There will be considerable warp-around moisture today supporting a chance of showers but drying will occur tonight as the low moves farther away. Breezy conditions will be associated with the low today and tonight. There will be less wind as a dry pressure ridge moves into the area Tuesday.
658 AM EST Mon Jan 23 2017 Aviation A trough of low pressure will bring rain showers to the area today into tonight. A brief respite from the rain will occur on Tuesday as high pressure works through the region.
534 AM CST Mon Jan 23 2017 The main concern in the near term will be the potential for patchy fog again this morning, especially over part of the western CWA where skies are clearing and winds are diminishing with high pressure moving into the area. Upper level ridging will build into the region late in the day today in response to a upper level trough digging down the west coast. This upper level trough will move into the central Plains Tuesday forcing a associated cold front into the eastern Plains by Tuesday afternoon. Strong WAA will allow temperatures to warm into the low to mid 60s across the southern CWA while cloud cover across the northern CWA will keep highs in the upper 40s to near 50.
The low will continue to organize and move onto the eastern plains of Colorado and deepen to 997mb through the afternoon. Even with clouds expect warm frontal boundary to warm forecast area to around 50 this afternoon.
Surface ridging continues to build into WI with plenty of lingering low level moisture.
530 AM EST Mon Jan 23 2017 High pressure will remain north of the area today. Low pressure will intensify along the mid Atlantic coast tonight and move northeast toward the Gulf of Maine Tuesday.
Boating Conditions Will Remain Very Hazardous with a Gale Strong low pressure, analyzed at about 988mb, over western North Carolina will lead to another windy day. Conditions remain quite unstable aloft as axis of strong upper level low swings across the Peninsula. Generally partly cloudy skies are expected through the afternoon before clearing commences later this afternoon as strong subsidence takes place on the backside of the trough axis. Temperatures will be closer to normal with highs in the low to mid 70s, and lows in the upper 40s to low 50s over much of the region tonight.
/issued 335 AM CST Mon Jan 23 2017/ The upper-level cyclone responsible for the latest round of inclement weather is moving rapidly east into the Carolinas early this morning. This will keep temperatures in the low/mid 50s in most areas this afternoon. Temperatures are forecast to drop into the mid 30s, with a few areas possibly falling below freezing around sunrise. Strong southwesterly flow aloft will develop on Tuesday as the ridge axis shifts east. Expect highs on Tuesday in the low/mid 60s.
Upper level low over the Carolinas will continue to move east during the taf pd.
Surface wise, an intensifying area of low pressure (990 mb)is located over western North Carolina with an associated trough draped across south Florida and into the extreme southeast Gulf of Mexico waters. In wake of this undulation, changeable skies, slightly cooler and drier air within a west to northwest trajectory will prevail.
Warmer air flowing northeastward ahead of the front associated with this storm will drive temperatures above normal and will likely result in a change in precipitation state to rain or a rain/snow mix across the Four Corners area. During the latter part of the day, the cold front with this storm will move southeastward across northeast Utah, then across the remainder of the forecast area during the night.
Starting to lose our lift on the western edge of the precipitation shield as large upper low heads toward the North Carolina coast. Upper air analysis reveals powerful upper level low (ULL) over the Southeastern U. By Tuesday, broad ridging will be in place across the Ohio Valley region. Many areas will see mostly sunny skies and highs in the lower 50s.
440 AM CST Mon Jan 23 2017 In the short term, upper level pattern shows a trough-ridge-trough setup from west to east over the CONUS. It should burn off into the mid morning hours leaving a pleasant day in place with high temperatures reaching into the lower 50s for much of the area. This feature will quickly deepen as the trough advances from the west. Heading into the day on Tuesday, as a strong upper level jet advects over the region quickly developing the low and moving it off to the northeast. This will help give high temps a boost into the mid and upper 50s ahead of a cold front that will move through northeast and east central Kansas by late afternoon.
406 AM CST Mon Jan 23 2017 Widespread stratus across the forecast area early this morning will be sticking around through today as high pressure over the area begins to move off slowly to the east through this afternoon. Low pressure over central Rockies will then push into central Plains late this afternoon through tonight. Inverted trough and mid level frontal zone expected to set up in the vicinity of I-90 east of the Missouri River after midnight tonight. Low temperatures tonight will again stay pretty mild in the upper 20s with continued warm advection ahead of the low and widespread cloud cover.
539 AM CST Mon Jan 23 2017 Widespread stratus across the forecast area early this morning will be sticking around through today as high pressure over the area begins to move off slowly to the east through this afternoon. Low pressure over central Rockies will then push into central Plains late this afternoon through tonight. Inverted trough and mid level frontal zone expected to set up in the vicinity of I-90 east of the Missouri River after midnight tonight. Low temperatures tonight will again stay pretty mild in the upper 20s with continued warm advection ahead of the low and widespread cloud cover.
"Chamber of Commerce" type day still in store for today, as current water- vapor satellite imagery shows ridging aloft building into Texas from the Southern Rockies.
The mountains along the Montana/Idaho border will have the biggest impact from this feature with a couple of inches of new snow in the higher terrain.
945 AM EST Mon Jan 23 2017 A warm front will lift north across the area this morning followed by low pressure moving across from the west this afternoon and evening.
949 AM EST Mon Jan 23 2017 A low pressure area will develop along the mid Atlantic coast today and will move slowly northeast and be just south of Cape Cod by early Tuesday night. This low pressure area will bring snow and sleet and some freezing rain to the north country late tonight and Tuesday.
725 AM EST Mon Jan 23 2017 A stout low pressure system will generate gusty NW winds across the region through the afternoon at each terminal.
The center of the low is now just to the east of the area near Boone NC. Current water vapor imagery indicates dry air moving eastward across TN and this will continue to wrap into the system as the low moves up the East Coast. Chattanooga Airport, TN 57 40 58 42 / 30 10 10 0 Knoxville McGhee Tyson Airport, TN 54 43 56 42 / 80 10 10 0 Oak Ridge, TN 54 43 56 41 / 80 10 10 0 Tri Cities Airport, TN 50 42 52 36 / 90 50 10 10 NC.
741 AM EST Mon Jan 23 2017 Low pressure will spread rain over most areas, with some snow as well in some locations this afternoon into Tuesday.
716 AM EST Mon Jan 23 2017 A low pressure area will develop along the mid Atlantic coast today and will move slowly northeast and be just south of Cape Cod by early Tuesday night. This low pressure area will bring snow and sleet and some freezing rain to the north country late tonight and Tuesday.
/issued 248 AM CST Mon Jan 23 2017/ Upper-level ridge to build across the region today allowing for northwest flow aloft and mostly sunny skies. Temperatures forecast to climb into the lower 60s areawide this afternoon.
825 AM EST Mon Jan 23 2017 Low pressure will spread rain over most areas, with some snow as well in higher elevations this afternoon into Tuesday.
816 AM EST Mon Jan 23 2017 A strong low pressure center in the western Carolinas this morning will move into eastern North Carolina this afternoon and be off the Mid-Atlantic Coast tonight. There will be considerable warp-around moisture today supporting a chance of showers but drying will occur tonight as the low moves farther away. Breezy conditions will be associated with the low today and tonight. There will be less wind as a dry pressure ridge moves into the area Tuesday.
Tonight, all skies will begin clearing with northwest winds around 10 to 15 mph through the overnight hours advecting in a cooler airmass. Northwest flow aloft will usher in drier conditions into Saturday, however temperatures will be near or slightly cooler than normal.
This morning's warm front has advanced northeast of the area, and all of our current activity is warm sector, well ahead of the surface cold front. The cold front is poised to come together tonight and approach the FA from the northwest late tonight-early Saturday, in response to an upper/H5 trof digging into/across the upper Mississippi valley. We anticipate the cold front to be layed out along our northwest entry counties by 12Z Saturday, making passage thru the FA during the course of the day Saturday, with the end of the day showing some clearing into the northwest as cooler/drier air starts to work in and down the column. That'll bring welcome relief to the area with cooler temps beginning Saturday but esp, Sun-Sun night when some u70s-l80s highs and 50s lows works FA-wide.
408 PM EDT FRI SEP 9 2016 High pressure will remain anchored over the southeast through Saturday.
330 PM CDT FRI SEP 9 2016 Our first cold front of September was moving through the northwest Texas Panhandle this afternoon. Pre-frontal warming was making for another hot afternoon across North and Central Texas with 3 PM temperatures in the lower and middle 90s. The cold front will reach the northwest zones overnight tonight and slide through the remainder of North and Central Texas through Saturday afternoon. The wind shift associated with a pre-frontal trough will actually precede the density discontinuity of the front by several hours. Coverage of storms across the southern zones Saturday afternoon will be scattered at best since the upper trough axis will already be east of the region when the surface boundary arrives. As mentioned above, the actual cold front (interface of drier and cooler air) will lag behind the wind shift by a few hours.
Otherwise, Saturday will be a pleasant day weather wise with dry conditions and warmer temperatures, along with breezy afternoon winds.
256 PM CDT FRI SEP 9 2016 An elongated trough within the polar jet is moving towards the Midwest sending a late summer sfc cold front towards the MS/OH river valleys this weekend. The progression of this trough and front is the primary weather maker for Saturday into Saturday night across the TN valley with isolated to scattered thunderstorms possible. Then, a brief time period of 'cooler' weather occurs after the frontal passage.
307 PM EDT Fri Sep 9 2016 A warm front will track north across the area tonight and Saturday morning accompanied by scattered showers with isolated thunder possible. A cold front will approach the area from the west late Saturday, probably bringing a round of showers and thunderstorms to the area late Saturday and Saturday night.
358 PM CDT FRI SEP 9 2016 The hot and dry pattern has continued today with an upper ridge over Alabama and residual dry air through much of the atmosphere.
1214 PM MDT FRI SEP 9 2016 Hand analysis at 15z shows the cold front draped across southern Wyoming with the morning models showing a weak intrusion of the cooler air into the northern valleys, then a retreat overnight. An upper level disturbance will be dropping out across the northern plains today dragging a dry cold front through the forecast area this afternoon and evening. General trend remains for westerly winds today shifting to the northwest with gusty conditions along the ridges. The dry and weak frontal push washes out be early Saturday with ridging building back north into the Four Corners.
Mainly VFR expected through 18Z/Sat as high pressure aloft builds eastward into our area. Northwesterly mid-to upper-level winds will shift to westerly after 06Z/Sat as a weather disturbance over western Canada flattens the aforementioned ridge.
239 PM CDT FRI SEP 9 2016 Focus is on the progression of the cold frontal boundary today and the associated convection. The surface cold frontal boundary was located from KSUX to KGRI to KGCK at 18Z this afternoon with pressure rises of 1 to 3mb behind the boundary and with post frontal wind gusts of 30 to 35 mph.
600 PM EDT Fri Sep 9 2016 Warm and humid conditions will continue until a strong cold front crosses the area Saturday night.
403 PM CDT FRI SEP 9 2016 As mentioned in earlier discussions, increased moisture returned today as expected with deep layer south to southeast winds between high pressure to the east and a trough of mid/upper level low pressure to the west over the western Gulf coast.
Cold front was located near a line from KGUY-KRSL-KCNK in western/central KS this afternoon. This will be followed by drier and coolerair with clearing skies and an early taste of fall weather. Overnight lows Sat night should fall into 50s over much of the area along with some upper 40s in normally cooler locations.
354 PM CDT FRI SEP 9 2016 (Tonight and Saturday) Cooler temperatures and increasing rain chances for Saturday. The main weather feature to affect West Central Texas the next 24 hours, is a cold front that will be moving south across the area on Saturday. An upper level trough will be moving across the Plains tonight and will send a cold front south across the area on Saturday. Temperatures will be noticeably cooler behind the front on Saturday, with highs ranging from the upper 70s to around 80 across the Big Country, to the middle 80s along the I-10 corridor.
With South Texas sitting on the more western side of the low, the influx of moisture remains greatest farther east, with the highest PWATs across South Texas only ranging from 1. At the surface, a cold front will sag south through North Texas reaching central Texas and the Hill Country most of the day Saturday. The boundary will begin to sag a bit farther south heading into Saturday night, keeping low chance POPs across much of the area, especially along the coast and gulf waters where moisture remains the highest. As for temperatures, with the slightly drier activity during the morning for Saturday, another cool morning across the inland areas is in store with lows in the low to mid 70s, but it also means daytime temperatures should be a degree or so warmer, especially across the Brush Country.
The strong ridge that has been dominating the southeastern states will begin to drift eastward tonight and tomorrow, while a trough approaches from the west and crosses the OH and TN Valley region Saturday afternoon and night. The surface cold front will move through late in the night, with pops lowering behind it from west to east as drier air moves in.