Aikyam-Lab/Synoptic-Bench huggingface dataset:
High pressure and clear skies to continue tonight with forecasted low temps in the lower 50s on track just inland from Lake MI. A ridge of high pressure will move across Lake MI Mon am with it moving ewd for the afternoon. Clouds will also decrease during this period, with mostly clear skies expected tonight and Monday as high pressure builds into the area. Temps will be below normal tonight, but will recover to around normal tomorrow as southerly winds develop within the western portion of the high.
912 PM CDT SUN AUG 21 2016 Unseasonably dry air over ern OK and nwrn AR this evening with high pressure centered over srn MO at 01z.
Tonight, winds will shift from the south as the high pressure slides east warming lows slightly from the previous night, into the upper 50s and low 60s. As for tomorrow, winds pick up as the gradient over northeast Kansas increases between a trough to the northwest and the aforementioned high to the east.
This drier air and ridge aloft will limit shower and thunderstorm development into the afternoon.
/Issued 912 PM CDT SUN AUG 21 2016/ Unseasonably dry air over ern OK and nwrn AR this evening with high pressure centered over srn MO at 01z.
(ISSUED 640 PM CDT SUN AUG 21 2016 ) High pressure is over Arkansas now with the stalled front across north Texas and north Louisiana. Morning to early afternoon rain has pushed out of AR, as the drier and cooler air behind the cold front has gradually filtered into AR. The upper low pressure trough deepened enough to allow the cold front to push all the way through AR and finally end the rain.
722 PM EDT SUN AUG 21 2016 Drier and cooler airmass settles in through the early part of the week. Next cold front approaches by the end of the week. The cold front has cleared the CWA. Getting some enhancement to the line of showers along the cold front as it accelerates through the eastern portion of the CWA into the mountains. No major changes to the dewpoints and temperatures in the airmass following the cold front. Drier and cooler air will make a relatively short stay through the near term and into the beginning of the short term. Guidance show good agreement with high pressure building from the west Monday night.
WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO At 900 PM, a weak upper low remained near Point Conception, with a deeper trough over the Pacific Northwest. The best convection today was over the mountain ridges of SD County, with local rainfall amounts up to 1 inch. For tonight and tomorrow, the weak upper low near Point Conception will transition into an open wave as it is picked up by the deeper trough over the Pacific Northwest.
Further off to the west, water vapor imagery showing next low pressure system pushing into southeastern Vancouver Province with upper level ridge axis located from central Montana into western Wyoming and eastern Utah. Both the GFS and ECMWF 12Z guidance showing the upper low tracking slightly further south Monday and Monday night as compared to yesterday.
747 PM MDT SUN AUG 21 2016 Winds have eased and humidities are slowly on the rise this evening across the high country in southeast Wyoming, so went ahead and cancelled today's Red Flag Warning. Further off to the west, water vapor imagery showing next low pressure system pushing into southeastern Vancouver Province with upper level ridge axis located from central Montana into western Wyoming and eastern Utah. Both the GFS and ECMWF 12Z guidance showing the upper low tracking slightly further south Monday and Monday night as compared to yesterday.
1054 PM EDT SUN AUG 21 2016 A trough of low pressure moves across the region late tonight. High pressure then dominates the upcoming week.
The weak flow and subtle, distributed trough currently over AZ will be enhanced by a jet moving into S.
718 PM EDT SUN AUG 21 2016 A strong cold front will approach tonight and cross the region Monday morning.
A dry cold front moved through Baker City and will continue to move through the remainder of Southeast Oregon this evening, and across Southwest Idaho from around midnight through early Monday morning. A dry cold front will move from west to east through the area tonight.
1135 PM CDT SUN AUG 21 2016 IFR/LIFR Ceilings possible tonight across area terminals in association with a lingering cold front.
With CAPE averaging just under 1000 J/kg, this could support an isolated elevated showers or thunderstorm as convection develops in the high terrain of NM and moves east toward our western CWA. As we go through the remainder of the week, a developing trough over the SW CONUS will have our region downstream of the trough axis. Along with a 500 hPa trough, latest model guidance does shift a 250 hPa jet further to the north putting our region in the right entrance region of the jet which will enhance upper level ascent.
750 PM EDT SUN AUG 21 2016 A cold front will usher in a cooler and much drier airmass this evening and overnight.
The trend during the next several days will be for the upper level ridge to build overhead. Warmer daytime temperatures will result.
High pressure system that brought the cold snap to the region the past day or so has now shifted off to the southeast seaboard. Later tonight, Saturday and Saturday night, rich low level moisture will be on the increase from the south ahead of an advancing cold front.
Temperatures are in the lower to mid 70s. In the low levels of the atmosphere, an Atlantic ridge of high pressure will extend across north Florida overnight. In the mid levels of the atmosphere, an area of high pressure will be centered over the southeastern Gulf of Mexico tonight. In the upper levels of the atmosphere, a ridge of high pressure will be located over the western Gulf of Mexico overnight.
Coast ridging across into the forecast area, and has allowed for a southerly flow to return, and with that, warmer and more humid conditions, along with an increase in cloud cover.
Overall, CIGS should be MVFR when they develop, but will likely have some TEMPO IFR at KVCT later this evening but ending before 12Z as the low level jet kicks up and helps curtail the IFR deck. Think that the low level jet (around 30 knots) will keep MVFR conditions but not lower and help to provide enough mixing for minor fog issues. The warmer temps will allow better mixing of the LLJ, which will likely result in breezy to windy conditions Sat across S TX.
Slightly cooler temperatures are expected across north central and southwest Oklahoma, where the winds will be lighter.
642 PM EST Fri Feb 10 2017 High pressure will build across the region through the weekend.
Area of high pressure has pushed offshore the Carolina coastline and will continue to move south and east into the overnight with ridge axis settling across central Florida. These conditions may allow for patchy ground fog to develop, as temperatures fall into the low to mid 50s, mainly across the interior late tonight. Easterly winds will veer to the south-southeast tonight as high pressure ridge axis settles across the region.
631 PM EST Fri Feb 10 2017 A warm front will approach the region overnight and will bring light snow to the north country, mainly after midnight and continuing into Saturday.
438 PM MST Fri Feb 10 2017 A cold front will start entering the counties along/north of the KS/NE border after midnight with winds shifting to the north and northeast under 10 mph. Further south warmer west winds around 10 mph expected which should help keep atmosphere mixed. For Saturday 850mb temperatures drop about 10F to 20F degrees (south to north) as the cold front moves south across the entire area.
949 PM EST Fri Feb 10 2017 High pressure remain the coast over the weekend allowing for a warmup.
Controlling high pressure will continue to move off the eastern seaboard with light southerly winds expected overnight. Northwesterly flow on the western edge of an upper level trough, along with a broad area of high pressure building across our area at the surface, will result in continued dry and seasonably cool conditions through tonight.
Moisture trajectory from the Lower Mississippi Valley maximized around the 315K isentrope, with the best local pressure deficits supporting some minor drizzle/light rain production along the southwest KY/northwest TN border counties between 09z-12z Saturday (3am-6am CST). High pressure system that brought the cold snap to the region the past day or so has now shifted off to the southeast seaboard. Later tonight, Saturday and Saturday night, rich low level moisture will be on the increase from the south ahead of an advancing cold front.
524 PM EST Fri Feb 10 2017 High pressure along the coast will move offshore tonight.
955 PM EST Fri Feb 10 2017 High pressure just off the coast will continue to ridge into the area Saturday.
High pressure aloft will return to the western states for the the upcoming week.
540 PM CST Fri Feb 10 2017 Main concern for the short term is the cold front dropping south in northern MN and the stratus behind it. Though it will be cooler in the wake of the cold front tomorrow, we'll still see highs get into the upper 30s, so p-type with anything we see will be rain.
638 PM EST Fri Feb 10 2017 High pressure along the coast will move offshore tonight.
741 PM CST Fri Feb 10 2017 Low level moisture continue to increase fairly steadily this evening as south winds in advance of lee side low pressure over the central high Plains bring a flow of moisture in from the Gulf. Record breaking warmth will overspread portions of eastern Oklahoma on Saturday ahead of the next cold front. Any wildfires will have to contend with a wind shift Sat night as the cold front sweeps through the region.
645 PM CST Fri Feb 10 2017 A backdoor cold front has pushed into northwest and north central ND bringing cooler temperatures and some low stratus. This front stalls somewhere in the vicinity of Williston to Bismarck tonight and then moves east as a warm front on Saturday. Adjusted temperatures slightly cooler this evening on the cool side of the front. Tonight a backdoor cold front will slide through and cool things off a bit. Short term models show an area of stratus and fog developing along the backdoor cold front that pushes westward to around Williston to Bismarck.
801 PM EST Fri Feb 10 2017 High pressure settling in tonight and sliding southward over the Atlantic. With light southerly flow throughout the afternoon, dewpoints have crept into the low 40s across most of northeast Florida, and in the upper 30s in southeast Georgia.
After dark, cooler air will be moving east ahead of a quick moving weather system, causing scattered snow showers to cause ground accumulations of 1 to 3 inches by morning. By late morning Saturday, snow showers will become less widespread, mainly continuing over the high terrain and mountain passes. By evening, cooler and drier air will be place, leading to less cloud cover and quickly cooling temperatures after sunset.
520 PM EST Fri Feb 10 2017 High pressure remain the coast over the weekend allowing for a warmup.
937 PM EST Fri Feb 10 2017 High pressure will build across the region through the weekend.
/BB/ Early afternoon surface analysis had a 1031mb high centered over the Carolina coast, ridging back across the Gulf coast and a 996mb low over the upper Mississippi river valley. Early afternoon water vapor imagery/RAP analysis showed a 592dam high centered over Mexico with a large broad mid level ridge over most over the CONUS. Despite the cloud cover and rain chances, highs Saturday will top out a few degrees warmer than today from the mid 70s to near 80 degrees.
The other story tomorrow will be the much cooler temperatures across the plains, as highs in the lower to mid 50s will seem downright chilly after today's record breaking numbers.
NC 949 PM EST Fri Feb 10 2017 High pressure remain the coast over the weekend allowing for a warmup.
Extended the High Wind Warnings for central and southern Laramie Range, foothills and southwest Platte County until 7 PM with gusts of 60 to 65 mph. then the expected snowfall over the higher mtns overnight into Saturday. Satellite showing nice surge of moisture now moving across parts of Utah and the desert southwest ahead of an upper trough moving onshore over the west coast. cutting off an upper low over far southern California while the rest of the energy ejects east across the northern Rockys and plains. Expect snow to increase over the higher mtns this evening with snow levels gradually lowering. Snow will continue through Saturday morning then taper off as better moisture gets shunted southward and the northern upper trough passes by.
Chattanooga Airport, TN 43 64 58 70 / 10 30 40 50 Knoxville McGhee Tyson Airport, TN 42 62 56 69 / 10 20 40 50 Oak Ridge, TN 41 60 55 69 / 10 30 50 50 Tri Cities Airport, TN 33 60 49 68 / 0 30 40 50 TN.
306 PM PST Fri Feb 10 2017 Showers and isolated thunderstorms into this evening with snow over the higher elevations causing travel impacts.
An upper trough will continue to bring a few more showers to the area this evening. High pressure builds into the area tonight and Saturday bringing dry weather and mainly clear skies.
this one in the form of a weakening long wave trough. A strong long wave ridge will then build into the west coast. The ridges. will be warmer at night and occasionally breezy as low level easterly flow develops over the area.
Clouds, gusty northwest winds, cooler temperatures, and chances for showers across the north highlight the short term period. Latest water vapor imagery shows our slow moving closed upper low circulating over southeast Saskatchewan early this morning. At the surface, a secondary cold front stemming from low pressure in eastern Manitoba, stretched southwest to near Estevan and into northeast Montana. This cold front will continue to push southeast today continuing the ongoing cold air advection. A dry and cool northwest flow dominates Thursday as the closed low continues to shift farther east into Ontario.
The inherited forecast remains on track with upper low over southern Saskatchewan driving cool and cloudy conditions over northeast Montana along with isolated showers and gusty winds. Maliawco A vertically stacked upper low currently in southern Saskatchewan will move to Manitoba today. Wrap around moisture on the back side of the low will stay primarily over Saskatchewan today. High pressure will build into the area tonight quickly diminishing the winds and partially clearing the skies. High pressure will remain over the area on Thursday and clear to partly cloudy skies will allow for more sun and warmer temperatures.
Upper ridge still holding strong and will only allow for slight chance of a shower or storm across most locations through the afternoon as a weak impluse moves around the northern periphery of the high. Chattanooga Airport, TN 91 73 93 73 / 20 10 10 10 Knoxville McGhee Tyson Airport, TN 88 71 91 72 / 20 10 10 10 Oak Ridge, TN 89 72 91 72 / 20 10 20 10 Tri Cities Airport, TN 85 67 89 68 / 20 10 10 10.
Satellite imagery shows the upper trough continuing to push north with drying to the NW that is helping to funnel moisture across central Colorado. Upper level trough will work slowly east across the state today, although best lift will be pushing to our northeast by afternoon. The low levels are still quite dry per the latest observations with the cloud deck ranging from 15-17 thousand feet MSL. Precipitation intensity has decreased so just a dusting to 1" possible over the higher peaks yet this morning. Some of the showers and storms that develop over the high country will have a chance to drift southeast onto the nearby plains and I-25 corridor depending on amount of heating behind this morning's wave. Highs today will be much cooler with the clouds and cooler air aloft across the forecast area.
Upper level low continues to dig south over western Montana with latest model runs showing any moisture with this system now a bit further to the east of the forecast area. An upper low digging along the divide will increase northerly flow over region today.
1046 AM EDT WED AUG 24 2016 Increasingly warmer and more humid air as the week progresses. Cold front approaches later in the week. Today will be the transition day as a weak warm front lifts northeastward across the area. While temperatures will be warmer than yesterday under southerly flow. with upper ridging across the eastern U.
This west-northwesterly flow is on the south end of a broad trough that stretches from Washington to North Dakota. Otherwise, today should remain mostly sunny and a little cooler than usual for August.
1102 AM EDT WED AUG 24 2016 925mb upper air analysis shows a trough/shear axis across northeast GA this morning. This ridge remains across the area through Thursday but weakens some. An upper ridge over the southern states centered about southern MS is forecast to drift over the TN valley and southern Appalachians through Thursday. With the upper ridge established over the TN valley and southern Appalachians for Thursday.
Like yesterday, the presence of a mid-level ridge and slightly drier air overhead will limit the coverage and movement of thunderstorm activity. Looking for moisture to continue to move around the upper ridge. Left the best rain chances along the highway 84 corridor. The upper ridge was expected to shift to the east slightly over Thursday, so more convection is possible across the northwest zones. Looks temperatures will be a little cooler also.
A cold front will move across the Oklahoma and northern Texas Panhandles late this evening and tonight. /Issued 439 AM CDT WED AUG 24 2016/ Upper trough over the central Rockies and Four Corners region will track slowly east today and tonight towards the Panhandles. A cold front over southwest Kansas and southeastern Colorado will push slowly south and east today into the Oklahoma Panhandle and then into the Texas Panhandle by late tonight or early Thursday.
Otherwise, we will maintain about a 30% chance of showers across our southern zones from late this morning through early this afternoon where the low to mid level cap is not as strong.
935 AM EDT WED AUG 24 2016 High pressure will remain to the south through Thursday.
947 AM CDT WED AUG 24 2016 Little change in the forecast in a high confidence scenario with wrap around moisture south of the upper level low on the Saskatchewan and Manitoba border. Clouds, gusty northwest winds, cooler temperatures, and chances for showers across the north highlight the short term period. Latest water vapor imagery shows our slow moving closed upper low circulating over southeast Saskatchewan early this morning. At the surface, a secondary cold front stemming from low pressure in eastern Manitoba, stretched southwest to near Estevan and into northeast Montana. This cold front will continue to push southeast today continuing the ongoing cold air advection. A dry and cool northwest flow dominates Thursday as the closed low continues to shift farther east into Ontario.
932 AM CDT WED AUG 24 2016 The upper-level ridge will remain centered over the southeast CONUS today. Large scale subsidence will continue to warm the column, with surface temperatures warming into the low/mid 90s across most of the Mid-South this afternoon. Water Vapor Satellite trends/00Z Upper Air analysis indicates a ridge of high pressure centered over Mississippi and Louisiana. As of 3 am CDT, temperatures across the Mid- South are in the lower to middle 70s at most locations with surface dewpoints also in the 70s. A hot and humid day is expected across the Mid-South today as temperatures will rise into the lower 90s this afternoon. Short term models indicate the upper level ridge will gradually shift east towards the Tennessee Valley.
High pressure drifting east of the region today will provide another dry day. with most areas seeing dewpoints rising into the low 60s this afternoon. Milder overnight readings in the low-mid 60s. A closed 594DM upper high initially centered over the Deep South will slowly migrate northeastward into the southern Mid Atlantic by the end of the period. The front is forecast to weaken as it continues to push southeast encountering the building ridge aloft. A moist and unstable airmass will reside in advance of the weakening cold front which should prove favorable for the development of isolated to scattered convection from the OH Valley into western PA during the afternoon/evening hours.
540 AM MDT WED AUG 24 2016 Upper trough covers the western 2/3 of the ConUS, as upper low spins over southern SK. Cooler and moist air will push into the region today and tonight as the trough swings through the northern plains. Highs will be in the 70s, warmer across central SD. Upper low/trough will diminish into westerly flow as it shifts eastward out of the region Thursday. Chances for precip will increase from west to east beginning early Thursday as another trough approaches the area.
25" range, and weak inverted trough/vorticity feature moving west under the ridge across the central Gulf coast, should result in good coverage of showers and thunderstorms over the next few hours since the convective temperature of 90 degrees has or will soon be reached. An upper ridge is centered over southern Mississippi with a weak easterly wave off the west coast of Florida.
952 AM EDT Wed Aug 24 2016 High pressure remains over the region through Thursday.
/issued 513 AM CDT WED AUG 24 2016/ A little warmer this morning with dew points in the low to mid 70s and air in the mid to upper 70s. However, today looks to be the hottest day this week overall with slightly cooler temps tomorrow as rain clouds spread back in our direction under the Bermuda ridge today and then ahead of the cold front later in the week from the other direction. In fact, the Euro has a tropical cyclone in the Gulf to wrap up the month moving NW that has been persistent in the latest runs.
VFR conditions expected for the next 24 hours as a mid level ridge continues overhead and provides subsidence across deep south Texas. Water vapor imagery continues to indicate an east to west elongated mid level ridge over the northern Gulf of Mexico this morning. This deep layer ridge will continue over the region through the forecast period.
1054 AM CDT WED AUG 24 2016 Weak trof ahead of approaching low this morning and a weak wave developing showers and thunderstorms for the morning in Central Illinois. Temps should be warmer today with above normal expected over the southern half of the area.
Will see CU develop in the NW as moisture returns with wrap around advection with upper low approaching. Cold front continuing to push east, departing the FA early this morning. In the wake of the front west winds have developed and will increase as the upper low pressure system slowly tracks east across southern Manitoba. Cooler temps today with highs in the 70s. Thursday will continue to see the influence of the upper low especially across NW MN with shower activity chances continuing, as a cool and cloudy day is expected.
713 AM EDT WED AUG 24 2016 High pressure will prevail into this weekend. Highs will top out in the lower 90s inland while a robust afternoon sea breeze limits temps to no higher than the upper 80s closer to the coast.
The 9 am EDT regional surface analysis showed a high pressure ridge along the Piedmont, with the low layer flow (1000-700mb) from the northeast at 10 to 15 knots.
1240 PM EDT WED AUG 24 2016 High pressure will remain to the south through Thursday.
1241 PM EDT WED AUG 24 2016 High pressure will prevail into this weekend. Highs will top out in the lower 90s inland while a robust afternoon sea breeze limits temps to no higher than the upper 80s closer to the coast.
An upper trough will slide over the Pacific Northwest late in the week bringing more seasonal temperatures.