Aikyam-Lab/Synoptic-Bench huggingface dataset:
It will gradually shift eastward over the next couple of days as a cold front develops across the central CONUS. However high pressure is forecast to remain across the Florida peninsula through the remainder of the work week. In addition an upper level ridge will remain across the Florida peninsula through this period.
437 PM EST Tue Jan 10 2017 Breezy and wet conditions are expected this evening as a cold front moves through. Cooler air will move in with the passage of the frontal boundary.
243 PM CST Tue Jan 10 2017 The cold front that pushed through the area this morning was already entering the Ohio Valley at 20Z. Rapid changes in the weather will continue tonight into Wednesday with another brief warming period tonight followed by another arctic cold front moving through on Wednesday. Winds will become light southerly by early this evening then increase by midnight as a warm front lifts toward the South Dakota border. Steady to slowly rising temperatures are expected tonight across the area as the warm front becomes stationary along the northern Nebraska boreder and low pressure develops over southwest Nebraska. The next surge of arctic air will then move rapidly south across the state Wednesday morning with the cold front extending from northwest Illinois to southwest Kansas by late Wrdnesday afternoon.
However, breezy southerly winds were keeping the fetch over the cooler continental shelf waters fairly short. For that reason, not really expecting much in the way of sea fog development until the evening when the winds diminish somewhat as a cold front moves across the Southern Plains.
A dry backdoor cold front will slip into the NE zones during the afternoon hours. We may be even warmer than this, with 12z MAV cranking out low to mid 70s along the Oklahoma border. Much cooler of course across the NE zones, where the NE wind shift will arrive first, with Trego and Ellis counties remaining in the 40s. Warm and dry conditions continue Wednesday with a cold front pushing through the area Wednesday night.
Coastal trough will wash out this afternoon, and return early tomorrow morning along with patchy fog. Coastal trough will continue to dissipate while moving northward tonight. Scattered showers will accompany this trough as it moves through our waters. Winds will generally be out of the northeast with a turn more towards the east tonight and then becoming more southerly on Tuesday behind the trough. Ridge of high pressure will remain stationary just north of the waters.
Arctic high pressure will continue to build across western and central North Dakota tonight into Wednesday.
Snow quickly changing over to rain in the Treasure Valley as warmer temperatures creep north this morning with a warm front associated with incoming system. Warm front located close to the Nevada border. May see precip taper off a bit overnight ahead of a morning cold frontal passage. Well defined warm front, across Northern CA/NV this morning, will shift north early this afternoon bringing more widespread precipitation. The northern zones along with the mountains will see snow accumulations of 3 to 6 inches in the lower valleys and 4 to 8 in the mountains. The warm front lifts north late Tuesday night which will be followed by a weak trough passage on Wednesday afternoon which should bring light snow showers to the region.
A cold front over Nebraska will begin to trek south into the region by midday. The general agreement is that southwesterly flow develops aloft at the end of the work week as an upper trough develops over the west coast.
to the West a large, relatively warmer airmass sets off of the north American coast.
Above this moist layer, mid-level ridging is causing a strong subsidence inversion that will keep the mid and upper levels quite stable today. Atlantic high pressure just off the Eastern Seaboard is ridging across Florida and into the northern Gulf this morning, with the pressure gradient across the coastal waters forecast to continue to gradually weaken through the next couple of days.
Have cancelled the High Wind Warning for northeastern Larimer and northwestern Weld counties. The upper low over eastern WY this afternoon will move into north central Nebraska by 12z Monday with a ridge of high pressure moving into the state on Monday. Have decided to cancel the high wind warning for zone 35, the winds will be strong there but expected to be less than 75 mph. Lower criteria gusts to 60 mph still a possibility for zone 38 so will continue with the high wind warning for this zone through the evening. High pressure and dry conditions will make for mostly sunny conditions on Monday.
742 PM CDT Sun Apr 9 2017 Closed low at H5 over central Wyoming mountains with trough extending to the northwest through central Montana as seen in satellite and radar. Weak ridge to the west behind this low will be sharpened by low over the northeast Pacific as it progreses into the Pacific Northwest. Large ridge over the eastern CONUS. along an inverted trough axis. Accumulations tonight over the Pine ridge around 2 inches from there to Cody or Valentine. Strong winds to develop with surface gradient tightening as upper level low moves into the northern Nebraska Panhandle. Cold enough for snow in the higher elevations.
Gusty west winds will diminish with sunset then veer to north/northeast and increase with the passage of a cold front late tonight.
More of the same is on tap tomorrow and it should even be a couple degrees warmer (still running forecast highs well above guidance).
Might see a period of gusts approaching 40-45 kts Monday morning if surface can tap into the low level jet before it moves away from the area, then gradual diminishing winds during the afternoon.
722 PM EDT Sun Apr 9 2017 High pressure with light winds and mostly clear skies will remain over the area for the next 24 hours.
Average highs this time of year are in the lower 70s. With minimal clouds and a light southerly flow continuing, low temperatures tonight should range from the mid 40s east to the lower 50s west.
NE-E surface winds decreasing overnight to around 8-10 knots, then picking back up to 15-17 knots with gusts 20-25 knots after 14z on Monday as high pressure strengthens over the Atlantic.
Above average temperatures and dry conditions are expected for the upcoming week has high pressure builds over Arizona.
Surface analysis this afternoon places a 1023 mb ridge of high pressure over the Mid-Atlantic and Southeast United States. Southerly winds on the back side of high pressure continue to advect moisture up from the Gulf of Mexico along with warm temperatures.
734 PM EDT Sun Apr 9 2017 A high pressure system will continue the dry weather through Monday.
This convection will increase on Monday as additional upper level energy moves across AR, as well as a cold front slowly moves through the region. Winds have lowered this evening and will again be elevated on Monday ahead of the cold front.
615 PM MDT Sun Apr 9 2017 Afternoon surface analysis over the western CONUS reveals low pressure departing the region through the high plains, while high pressure settles in from the Great Basin. Near-term forecast soundings indicate this lingering moisture in the lowest 5000 feet or so of the atmosphere this afternoon. These two factors have helped sustain the lingering precipitation in the higher terrain. clearing skies, light winds, and dry air in the low levels will result in a rapid drop off of temperatures in the valleys. Freeze Advisory remains in effect for Monday morning and min temperatures have been nudged slightly lower in line with slightly cooler guidance today (especially the MAV).
735 PM EDT Sun Apr 9 2017 High pressure will keep dry weather and warm weather in the forecast through Monday.
939 PM EDT Sun Apr 9 2017 High pressure will linger over the western Atlantic through early this week.
5 inch during the day Monday with the highest values northeast. Pressure gradient does not weaken substantially until late in the period when cold front approaches, thus expect breezy conditions to continue. Dewpoints into the low 70s by tonight will keep min temps well above normal in the low to mid 70s. High temps tomorrow above normal for all, but well above normal west with warmer temps aloft.
1008 PM EDT Sun Apr 9 2017 High pressure move off the coast of New England tonight allowing for warmer air to move over the region Monday. A cold front will sink south Monday night.
740 PM EDT Sun Apr 9 2017 High pressure will keep conditions settled through the early part of the week before a cold front approaches from the west midweek. High pressure over the area has resulted in a very pleasant day across central NC with temperatures in the mid-70s and just a few high clouds overhead. Lows in the upper 40s, considerably warmer than the last couple of nights. High pressure will shift slightly eastward and southwesterly flow will be a little stronger on Monday afternoon, particularly in the west where winds will reach 10 kts or so. Monday night moderation in temperatures will continue as lows should only bottom out in the low 50s.
A double barreled low pressure system is currently working its way across the central plains, with the leading low over eastern Nebraska, and the second one over southwestern South Dakota. This low will drop south late tonight into early Monday morning, allowing the far southern CWA to become the area most likely to see precipitation through the night and into Monday morning. The precipitation will come to an end by Monday afternoon as high pressure drops in behind the exiting system.
1034 PM MDT Sun Apr 9 2017 Afternoon surface analysis over the western CONUS reveals low pressure departing the region through the high plains, while high pressure settles in from the Great Basin. Near-term forecast soundings indicate this lingering moisture in the lowest 5000 feet or so of the atmosphere this afternoon. These two factors have helped sustain the lingering precipitation in the higher terrain. clearing skies, light winds, and dry air in the low levels will result in a rapid drop off of temperatures in the valleys. Freeze Advisory remains in effect for Monday morning and min temperatures have been nudged slightly lower in line with slightly cooler guidance today (especially the MAV).
722 PM EDT Sun Apr 9 2017 High pressure will bring clear skies overnight.
Upper level ridging continues to build eastward across the central Gulf Coast region this afternoon. An upper level ridge of high pressure will continue to stretch from the western Gulf of Mexico, through the central Gulf Coast region and into the eastern states/western Atlantic tonight into Monday. Otherwise, POPs remain near zero through Monday with plentiful deep layer dry air and subsidence under the ridge axis. Lows tonight should trend a little warmer, with readings in the upper 40s to lower 50s over interior areas, and mid 50s to near 60 degrees expected near the immediate coast and beaches. Highs Monday afternoon should range from the mid to upper 70s near the immediate coast to the lower 80s inland.
As the cold front catches up to the dryline later tonight, the potential remains for convective development well after midnight across the area.
1228 AM EDT Mon Apr 10 2017 High pressure move off the coast of New England tonight allowing for warmer air to move over the region Monday. A cold front will sink south Monday night.
1242 AM EDT Mon Apr 10 2017 High pressure will linger over the western Atlantic through early this week.
Plan to keep mention of TEMPO MVFR conditions from KSPS up to KOKC/KOUN ahead of a cold front 07-11 UTC. The cold front should be south of KSPS by 12 UTC, allowing for north to northwest surface winds and VFR conditions areawide. As the cold front progresses over the region late this evening and overnight scattered showers and storms will be possible late tonight mainly across southeast parts of Oklahoma.
This afternoon we were tracking a fairly small scale, but formidable mid-latitude cyclone across Wyoming. Low level cold frontogenesis promoted development of strong convection in the CO-NE- KS tri-border region. Winds will shift to the northwest later in the evening as Pacific cold front moves south. Monday temperatures will be around 15 degrees cooler behind the storm system.
1146 PM CDT Sun Apr 9 2017 Closed low at H5 over central Wyoming mountains with trough extending to the northwest through central Montana as seen in satellite and radar. Weak ridge to the west behind this low will be sharpened by low over the northeast Pacific as it progresses into the Pacific Northwest. Large ridge over the eastern CONUS. along an inverted trough axis. Accumulations tonight over the Pine ridge around 2 inches from there to Cody or Valentine. Strong winds to develop with surface gradient tightening as upper level low moves into the northern Nebraska Panhandle. Cold enough for snow in the higher elevations.
752 PM EDT Sun Apr 9 2017 Another dry day is expected on Monday with plenty of sunshine and even warmer temperatures with highs in the mid 60s to lower 70s.
Southerly flow to the south of the warm front continues to advect moist air northward, beneath a substantial EML and strengthening mid-level cap. The best chances for any convection this evening will be near along and north of the warm front. Further south through central and southern Iowa, it looks likely that the atmosphere will remain capped with respect to surface based convection until near or after dark when the dry line moves east into the state and begins to be overtaken by the cold front. A few showers are also possible as moisture wraps around the northern side of the low.
710 PM CDT Sun Apr 9 2017 A tight gradient between high pressure anchored along the East Coast and a frontal boundary over the Plains is creating strong southerly winds across central Illinois this afternoon. with the highest gusts concentrated along/east of I-57.
A trough to the north and ridge to the south but heads over the Upper Mississippi Valley. The southern trough portion sets over Wyoming and is slowly propagating to the northeast. The ridge portion runs from northern central Montana up the front range. Upstream another pair of meso ridge/troughs but heads over the Nevada and Oregon respectively. This Afternoon through tonight: While the flow is pointed northward, the trough embedded is propagating east. Monday: Trough will exit and the Nevada ridge will amplify and move into Montana.
High pressure off the Mid Atlantic coast will continue to tilt to an east to west orientation while strengthening.
Weak cold front will move through KABI around sunrise and KSJT Noon and KBBD in the early afternoon. Slight chance PoPs are then expected after midnight for a larger portion of the forecast area as a cold front approaches. The cold front will move into the Big Country early Monday morning. As the aforementioned cold front slowly moves through the area on Monday, an increasingly unstable environment will develop ahead of this feature, especially as heating takes place during the afternoon hours.
Dry conditions and warmer temperatures will prevail through the end of the week.
Current analysis indicates an area of low pressure along the MO/IA border with a cold front moving through the far SW part of our CWA now. Late tonight, a few showers may re-enter northern parts of the area as the upper level low moves through the area from west to east. Otherwise a dry, but noticably cooler, day is expected. I continued the mention of frost in the forecast Monday night as temperatures will be falling into the low 30s for the entire area.
737 PM EDT Sun Apr 9 2017 Low pressure over the Central Plains will move into the Central Great lakes Monday.
However, clouds are expected to redevelop during the early AM hours Monday as the area comes under the influence of a slow moving cold front extending across east Texas. Breezy conditions continue Monday as well courtesy of the pressure gradient between the frontal boundary to the west and high pressure off the eastern seaboard. /issued 350 PM CDT Sun Apr 9 2017/ High pres is currently centered over the Carolina coast ridging southwest acrs the Gulf coast, while lower pres over the central plains extends southwest into western TX. The latest UA analysis and WV imagery shows ridging and drier air aloft helping to keep dry weather in place. Lows tonight are expected to fall to the upper 50s acrs central LA, trending warmer to the south and west with lows only reaching the middle 60s acrs southeast TX.
1003 PM EDT Sun Apr 9 2017 A sharp ridge aloft and attendant warm air will provided for 2 very warm early April days to start the work week.
High pressure situated along the east coast will help to keep our weather dry in central Alabama through Monday, with the warming trend continuing as well.
Upper ridge brought cool dry weather to our CWA today but a weak impulse spread clouds across northern areas this evening. Next Pacific trough now onshore in WA and OR will spread clouds and showers into eastern Oregon overnight and Monday. The trough will keep temps down in central and northern areas Monday but southern areas will be about 5 degrees warmer than today.
Satellite shows cold front is moving into western Oregon and Washington early this evening. Weak upper ridge builds in Monday night with clearing skies and cold temperatures.
Mild and windy weather will continue through tomorrow as a low pressure system slowly moves from the upper Midwest into the Great Lakes region. The cold front associated with the low pressure system will begin to move in Monday night.
Dry conditions will continue under clear skies with light easterly winds as our area remains on the southwestern flank of a broad area of high pressure.
919 PM EDT Sun Apr 9 2017 A sharp ridge aloft and attendant warm air will provided for 2 very warm early April days to start the work week.
532 PM MDT Sun Apr 9 2017 Afternoon surface analysis over the western CONUS reveals low pressure departing the region through the high plains, while high pressure settles in from the Great Basin. Near-term forecast soundings indicate this lingering moisture in the lowest 5000 feet or so of the atmosphere this afternoon. These two factors have helped sustain the lingering precipitation in the higher terrain. clearing skies, light winds, and dry air in the low levels will result in a rapid drop off of temperatures in the valleys. Freeze Advisory remains in effect for Monday morning and min temperatures have been nudged slightly lower in line with slightly cooler guidance today (especially the MAV).
Will continue to keep POPs over the far southeastern CWA through tonight before tapering them off tomorrow morning as the upper low moves off into southern MN and high pressure builds into the Plains. There has been a fair amount of stratus in the cooler air back behind the front. Temperature wise, think that clearing late in the night should help the far northwestern counties drop down into the lower 20s, with low to mid 30s in the south with clouds and precip.
Approaching trof across the Central Plains shud help erode a rather strong cap in place this afternoon and evening. Have therefore kept PoPs on the low side due to many questions. Tilly As discussed above, the threat for strong to severe thunderstorms may persist into the late afternoon and early evening hours on Monday until the cold front has moved through the area.
Will keep mention of tempo MVFR from KSPS up to KOKC ahead of cold front. Cold frontal timing from previous forecast will sped up slightly with gusty northerly winds behind front through end of forecast period. As the cold front progresses over the region late this evening and overnight scattered showers and storms will be possible late tonight mainly across southeast parts of Oklahoma.
A pacific trough will bring a weakening cold front into the north late in the week. With a cooler airmass having settled into the area and the mostly clear skies, temperatures are expected to cool quite efficiently across most areas tonight. Below freezing min temperatures are forecast in most valleys outside of Dixie and the Lake Powell area.
1041 PM EDT Sun Apr 9 2017 High pressure residing along the Southeast coast will bring warm conditions to the Ohio Valley through Monday.
Temperatures tonight will be a few degrees warmer than previous nights as low level moisture has increased. Northeast winds 10 to 15 knots will become east to southeast late tonight as inverted trough weakens.
In addition, a cold front is expected to approach from the north and result in isolated TSRA in the afternoon hours.
1008 PM EDT Sun Apr 9 2017 Bermuda high pressure will extend west into the Carolinas until a cold front settles through the region late Wed and Wed night. High pressure will shift slightly eastward and southwesterly flow will be a little stronger on Monday afternoon, particularly in the west where winds will reach 10 kts or so. Monday night moderation in temperatures will continue as lows should only bottom out in the low 50s.
731 PM EDT Sun Apr 9 2017 High pressure will keep dry weather and warm weather in the forecast through Monday.
A much warmer night than the previous two nights is expected as LLJ cranks up to 35-40 knots overnight, keep low levels mixed and only allowing lows to fall into the upper 40s east to upper 50s northwest.
842 PM EDT Sun Apr 9 2017 High pressure move off the coast of New England tonight allowing for warmer air to move over the region Monday. A cold front will sink south Monday night.
Water vapor imagery showing upper trough deepening over central Wyoming while a lead wave helped develop convection over northern Nebraska. Initial cold front making its way south across south central Nebraska with dryline moving east into southern Kansas and western Oklahoma. Better chances for storms look to be this evening into the early morning as cold front swings through eastern Kansas with most guidance leaning this way. Secondary cold front moves through Monday afternoon with a stronger shot of cold air following.
High pressure shifting off the mid Atlantic coast overnight will allow easterly low level flow to increase some to around 15 knots at 925 mbs and keep easterly onshore flow elevated around 10 mph along the coast from Cape Canaveral to coastal Martin county.
Chattanooga Airport, TN 47 80 55 78 / 0 0 0 20 Knoxville McGhee Tyson Airport, TN 47 80 53 77 / 0 0 0 10 Oak Ridge, TN 47 80 54 78 / 0 0 0 20 Tri Cities Airport, TN 41 78 47 76 / 0 0 0 10.
912 PM EDT Sun Apr 9 2017 Low pressure over the Central Plains will move into the Central Great lakes Monday.
A cold front will approach our region from the northwest on Monday, then cross the Lower Ohio Valley late Monday night. This appears to be related to increasing forcing as a compact 500 mb closed low moves east-northeast across the Upper Mississippi Valley.
The question then becomes, how strong will the winds be after peak mixing? Low level flow between 700 and 800 mb increases rapidly over eastern WY and western NE panhandle this evening in response to and upper level PV max and the consolidating low level cyclone over western SD. Model soundings continue to show decent low level lapse rates through early evening mainly south of the Pine Ridge. Decided to go with a winter weather advisory for Niobrara, N Sioux, and Dawes Counties which will replace the high wind watch previously in effect. The low will pull away from the area early Monday morning with winds diminishing and skies clearing over the north.
Upper level high pressure is now spreading over the southeastern conus. Increasing atmospheric column heights from the ridge is resulting in a gradual warming trending as seen through current temps now in the mid 70s to 80. Thinking morning lows will be about 5 to 10 degrees warmer Monday morning than they were this morning.
/Issued 322 PM CDT Sun Apr 9 2017/ Main concern this afternoon is with the highly conditional severe weather potential later this afternoon and into the early evening across parts of northeast Oklahoma. After midnight, shower and thunderstorm coverage should increase as the low level jet increases across the region and the cold front catches up with the dryline.