Aikyam-Lab/Synoptic-Bench huggingface dataset:
304 PM MDT Tue Oct 25 2016 Upper ridge axis is bisecting the CONUS, with a weak wave over the rockies pushing some clouds and a few showers through the region. Upper wave will continue pushing eastward through the ridge tonight, with ridge axis rebuilding over the western states. With broad upper ridge in place, mild and dry weather will continue on Wednesday. Broad upper ridge will persist over the western two- thirds of the CONUS through the week, with dry and very mild conditions expected.
1116 am Update, The weak low pressure trough moving east northeast across the area is producing very light sprinkles or showers as it moves east from Valley and Garfield counties this morning and will continue to produce some light precipitation as it moves east into North Dakota. 953am Update, A weakening low pressure trough moving northeast across a strong high pressure ridge will produce isolated to scattered showers mainly across portions of Phillips and northern Valley counties today. While a Pacific storm system rages west of Vancouver Island today, Northeast Montana remains under a southwest flow aloft due to a large ridge over the Central Plains. Wednesday will see the return of the upper ridge for more continued mild weather and seasonal temperatures. There will be a frontal boundary orientated east-west across Nemont with cooler air to the north.
331 PM EDT Tue Oct 25 2016 High pressure holds through Wednesday.
Showers will be diminishing in areal coverage by mid-morning with activity tapering off this afternoon as drier, cooler and more stable conditions settle in behind the exiting wave. High pressure quickly rebounds tonight with riding becoming parked overhead for the next few days.
125 PM EDT Tue Oct 25 2016 Canadian high pressure will build over the area through Wednesday.
110 PM EDT Tue Oct 25 2016 Seasonably cool and dry air expected on Wednesday as high pressure remains across the area.
217 PM EDT Tue Oct 25 2016 High pressure will remain over the region through Wednesday night.
646 PM EDT Tue Oct 25 2016 High pressure holds through Wednesday.
Gusts of 40 to 50 mph with higher gusts along ridge top locations are expected through Wednesday daytime.
Strengthening high pressure aloft across the Great Basin will bring drier conditions and warm temperatures to the region for the middle of the week.
303 PM CDT Tue Oct 25 2016 Low pressure centered over western Nebraska is forecast to move east through the short term period. This low pressure will be main the weather producer in the short term. That being said, there is a substantial stable layer near the sfc, closer to the track of the low. Hires precip accums range from 1 to 2 inches across the highway 20 corridor.
126 PM EDT Tue Oct 25 2016 Seasonal and dry high pressure will remain over the region through Wednesday.
Surface and upper ridge will dominate next 18 hours keeping pleasant weather across the region before a short wave and surface front approaches from the west late in the day on Wednesday.
/issued 1035 AM CDT Tue Oct 25 2016/ Upper level high pressure covers the region with quiet weather continuing.
256 PM CDT Tue Oct 25 2016 High pressure centered south of Hudson Bay in Canada extends southward to cover much of the eastern half of the country. Locally, skies are mostly clear with most temperatures in the lower 80s.
Cooling cloud tops on IR imagery suggest there could be pockets of moderate rain showers within this band, so bumped up QPF totals a bit through sunrise over the high country, along with snow totals above 9000kft. The exception will be in the higher mountains where the nose of a weakening jet should aide in producing orographic rain showers this afternoon.
A weak low pressure trough kicked off some light showers, which are now moving into far eastern and northeastern Montana. The trough and associated showers will be moving out of Montana between 530 pm to 630 pm. Tonight through Wednesday, an upper level ridge of high pressure will continue across eastern Montana. The high pressure ridge will continue to allow weakening disturbance to move over the top of the ridge and across NE MT.
307 PM MDT Tue Oct 25 2016 The atmosphere will continue to stabilize this evening as ridging builds into the region over the next 24 hours. The ridge will amplify Wednesday bringing sunny skies and temperatures 5 to 10 degrees above normal once again for the second part of the workweek.
As the afternoon continues, look for bands of high clouds to continue to spread over Oregon ahead of a moist low pressure system advancing toward the SW Oregon coast. Deep low pressure will track northward off the coast tonight into Wednesday morning. The GFS is the wettest of the morning models, but using a blend of the more conservative ECMWF and SREF suggests high chances for measurable rain over our typically dry areas like the Lower Columbia Basin into the Tri Cities. Bands of mid and high clouds will increase this afternoon and evening ahead of a moist warm front.
309 PM EDT Tue Oct 25 2016 Dry and mild weather expected to continue over the forecast area through the Short Term forecast period as weak upper ridging crosses the region tonight through the day Wednesday.
Short wave trough approaching NM early this morning and will cross the state today, followed quickly by drier air.
SHORT TERM (Tonight through Wednesday Night): H5 ridge continues to nudge westward into western Mexico, with a weakness in the ridge nudging into the region.
Meanwhile, local radars are only detecting isolated showers on the nearshore waters 5 to 20 nm south of the Lower Keys. Surface wise, an enormous area of high pressure is covering the entire eastern United States, down the Florida Peninsula. Meanwhile, an unusually deep, equatorward southern stream upper level trough over the Gulf of Mexico southward into Old Mexico will translate eastward drawing an abundance of high level moisture into our area.
149 PM PDT Tue Oct 25 2016 Fair and warmer weather is expected through Wednesday with higher pressure aloft and night and morning low clouds in the coast and western valleys.
357 PM EDT Tue Oct 25 2016 High pressure will keep dry weather over the region through tomorrow morning.
321 PM EDT Tue Oct 25 2016 Seasonably cool and dry air expected Wednesday as high pressure remains across the area.
Onshore flow pattern across the area Wednesday given high pressure building north of the region.
In response to an approaching trough, winds will gradually turn more southerly through the period.
211 PM CDT Tue Oct 25 2016 The 12Z Models suggest the developing/incoming cold front will be a little slower with its entrance/passage, and our collaborative efforts will reflect that, particularly with regard to POP/WX/Sky.
214 PM EDT Tue Oct 25 2016 High pressure holds through Wednesday.
145 PM EDT Tue Oct 25 2016 Aviation High pressure will provide one more day of fair and cool weather today. Then rain arrives late tonight and persists through Wednesday night as low pressure moves through. Forecast issues are for thunder chances across the south and precip type across the north as low pressure moves through Lower Michigan beginning tonight. GFS model soundings are about 1 degree C cooler than yesterday and wet bulb zero heights are near the ground at CAD. Will have mix with snow going across the northern tier, primarily on Wednesday night as the low tracks east and cold advection begins. Cannot rule out some light accums across the high ground of Osceola County.
332 PM EDT Tue Oct 25 2016 High pressure will build over the area through mid week.
1128 AM MDT Tue Oct 25 2016 A weak upper wave is pushing through the ridge, helping to produce some scattered showers across portions of western SD this morning. Upper ridge axis is now crossing the nrn Plains with SW flow aloft moving in. Surface analysis shows a trough across ern MT into wrn SD with southerly winds across cntrl SD and westerly becoming northwesterly winds across ne WY. Highs will reach the low 60s to mid 70s with the warmest spots across sw to scntrl SD. Upper ridging will be reinforced across the region Wednesday with dry and mild weather continuing. Highs will reach the low 60s to low 70s.
AVIATION [Through 18Z Wednesday] Low-level moisture will increase overnight from the east as high pressure builds down the eastern seaboard. High pressure building into the region at the surface and aloft will keep the weather quiet across the region today. Expect seasonably warm temperatures to continue, with highs reaching the lower to mid 80s this afternoon.
Strong high pressure will bring a drying trend the remainder of the week along with above normal temperatures for late October. Latest models continued to show a ridge of high pressure aloft regaining control of the weather pattern over the region.
351 PM EDT Tue Oct 25 2016 A band of low-level moisture trapped under a 4kft inversion associated with a 850-900 hPa ridge axis combined with ample lake- air delta T's and some diurnal influence has allowed scattered showers to persist from near Thunder Bay across much of the NE half of Upper Michigan this afternoon. Low pressure continuing to organize over the central high Plains this afternoon will reach northern Iowa late tonight and far northern Illinois late Wednesday afternoon. Thick cloud cover will likely linger thru much of the day Thur despite the arrival of anti-cyclonic flow, due to the lack of strong mixing, thus temps could struggle to warm beyond the lower to middle 40s.
318 PM CDT Tue Oct 25 2016 Fairly persistent conditions due to broad upper ridging stretching across northern MEX, southern TX and northern gulf with aftn temps across our area once again in the upper 70s to lower 80s. However this short wave will not cause much disruption to large upper ridge, and fewer clouds may result in aftn temps reaching into the mid 80s late this week and weekend.
with upper level high pressure dominating the weather pattern through period. as ridging continues to build.
340 PM CDT TUE OCT 25 2016 High pressure centered over ern Canada continues to ridge swd providing a light and somewhat variable flow over the forecast area this afternoon. Water vapor imagery shows ridging in place over the cntl CONUS aloft. Highs again will be running several degrees above the seasonal norms as a more onshore flow develops behind the high which is progged to push ewd over the next day or so.
/Issued 645 AM EDT Tue Oct 25 2016/ A dry cold front will cross the area early this morning giving way to a slightly cooler airmass. Highs temps around 70 across the higher elevations to the low 80s south of Columbus. Easterly winds may become gusty as the front pushes further south with high pressure building in from the NE.
The mild Autumn weather will continue tonight into Wednesday as a cold front approaches the region. Scattered convection will develop across the Plains tonight as the low level jet interacts with the front.
204 PM CDT Tue Oct 25 2016 Surface and upper ridge will dominate next 18 hours keeping pleasant weather across the region before a short wave and surface front approaches from the west late in the day on Wednesday.
134 PM EDT Tue Oct 25 2016 High pressure will build over the area through mid week.
127 PM EDT Tue Oct 25 2016 High pressure will keep dry weather over the region through Wednesday morning.
This area of showers will shift northward through the rest of the afternoon and evening as the boundary shifts northward and upper level ridging develops. High temperatures Wednesday over the area will be 5 to 10 degrees warmer than today, peaking in the 70s in the Valley.
253 PM EST Sun Jan 8 2017 An upper trough axis is about to move off the U. Temperatures have managed to reach the mid 60s with dewpoints in the lower 50s. This gradually turns the lower tropospheric flow from north to east over the next few days. The current trajectory over the Florida Peninsula should allow for a mostly clear evening and potential late night density surge as temperatures settle into the lower 50s over the interior Everglades. As high pressure slides to our north and northeast, winds will gradually become northeast to east. Thus far today, January 8th, the low temperature at Key West International Airport has been 57 degrees, 55 degrees at Marathon, and 51 degrees as a NWS-sited HANDAR instrument in North Key Largo.
1251 PM EST Sun Jan 8 2017 Arctic high pressure crosses this evening.
Otherwise did increase wind speeds as even the higher MOS winds are too low as seeing sustained 15-23kts in the southern RRV with gusts to 25-28 kts.
222 PM EST Sun Jan 8 2017 Arctic high pressure crosses this evening/tonight.
457 PM EST Sun Jan 8 2017 Arctic high pressure settles over the Mid Atlantic tonight into Monday.
1258 PM EST Sun Jan 8 2017 A weak trough of low pressure moves southeast of the area today as high pressure builds tonight. The high moves east Monday. This is in advance of an approaching upper lvl cold core trough axis thru 21z. Trough moves east this evening, and weak ridge builds, with subsidence noted. Once again, leaned toward cooler side of mos. On Monday, another weak upper trough moves through with little fanfare other than some mid and high level clouds during the day.
Dry and cool conditions will continue today with strong high pressure centered north of the area.
Latest high-res guidance indicating highs today will be slightly cooler than previous forecast, so adjusted today's highs down a bit. Still, highs should be in the lower to mid teens above zero for today. The center of the ridge is currently over the twin ports and through NW WI early this morning. An area of low pressure will move toward the upper midwest on Monday.
/ISSUED 336 AM CST Sun Jan 8 2017/ Sub-freezing temperatures are blanketing the entire forecast area again this morning as an Arctic airmass remains in place across the region.
This will likely lead to warmer highs this afternoon.
1008 AM CST Sun Jan 8 2017 High pressure was ridging over SE Texas at 10:00 AM. Temperatures were above freezing - between 35 and 40 at the inland stations and already in the 40s at the coast. /ISSUED 546 AM CST Sun Jan 8 2017/ Light and variable winds this morning will veer to the southeast and increase to 5-10 knots this afternoon as surface ridging over East Texas moves farther east. HRRR guidance shows this lower deck continuing to spread inland this evening, possibly as far north as IAH. The very dry 1041mb high pressure system centered over extreme SETX slides eastward today and tonight and this will allow the light northeast winds to turn first east then southeast tonight.
High pressure in the mid Atlantic region will make for slightly warmer temperatures on Monday along with dry conditions.
Chattanooga Airport, TN 30 18 42 30 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 25 11 38 27 / 0 0 0 0 Oak Ridge, TN 29 14 40 28 / 0 0 0 0 Tri Cities Airport, TN 20 6 36 22 / 10 0 0 0.
There looks to be a few hours where temperatures/winds get close to wind chill advisory criteria across the higher peaks of the eastern mountains. Since this is only across the higher peaks and values are borderline, will opt out of issuing an advisory at this time. Clouds will begin to clear by late morning, heights slowly begin to rise, and weak southerly flow returns to the lower levels. With warmer air continuing to push into the area.
This will be a nice reprieve from the below freezing temperatures seen antecedently. The models have agreed to slow the overall progression of the lee side low pressure system that ejects off toward the Great Lakes.
where readings are still at or below freezing late this morning.
Update to increase winds, especially southwest, behind the cold front/trough moving east across the state. Upper level analysis places modest ridge stretching from the Pacific Northwest towards the Great Basin with trough over the eastern United States. Warmer air tries to nudge over western locations, though this will be tough to do as cold airmass remains well entrenched over the area.
149 PM CST Sun Jan 8 2017 An upper ridge will begin to expand eastward over the region tonight Monday while the arctic airmass shifts east also, and allows low level winds to veer to the southwest and west.
The Four Corners area will see chances of very light snow for an hour or two longer, but the snow will quickly change over to rain as the ridge over Arizona continues to strengthen and temperatures aloft warm. The few mesonet sites we have over far northeast Arizona indicate that temperatures have warmed just above freezing, so some light icing may be possible before temperatures completely warm above freezing. A broad area of low pressure was located over the Eastern Pacific this morning, centered well off the Washington/British Columbia coast. At the same time, high pressure aloft was beginning to build over Arizona. Building high pressure will then dominate the weather today with a milder air mass moving in and warmer temperatures. In addition, a cold front will sweep across the area.
/ISSUED 1008 AM CST Sun Jan 8 2017/ High pressure was ridging over SE Texas at 10:00 AM. Temperatures were above freezing - between 35 and 40 at the inland stations and already in the 40s at the coast.
Some lingering snow showers with temperatures near or below freezing across eastern Elko County through this afternoon. Cooler Monday night into mid-week with snow levels lowering back to valley floors.
1020 AM MST Sun Jan 8 2017 Deep NE Pac upper trough will support a splitting stronger impulse into the region, bringing a temporary break in cold arctic air over most of the fa. The main impact from this system will be breezy conds and a period of warmer air this morning. Stronger flow reflection will support a stronger WAA push into the region with many locations over NE WY and the Black Hills warming above freezing tonight. This trough will will support a period of gusty winds on the SD plains, possibly adv winds.
This will likely lead to warmer highs this afternoon. This will allow temperatures to begin to moderate behind our strongest cold front in nearly 6 years. With continued south winds, lows tonight will be in the 30s and 40s with only locations in the northern Hill Country flirting with the freezing mark one more night.
248 PM EST Sun Jan 8 2017 High pressure over the area will shift eastward tonight. Highs on Monday should finally make it above freezing, topping out in the mid to upper 30s. For Monday night a low pressure system will move from the Plains into the upper Midwest.
Greater insolation over the western half of south Florida will allow temperatures to warm into the lower 70s. By late in the work week, ECMWF and GFS are consistent building an upper level high over the region downstream of a low-latitude trough over northern Mexico.
High pressure building toward the Mid-Atlantic coast will veer elevated low level winds toward the northeast into tonight. It will be another cold night, especially northwest of I-4 where min temps will fall into the mid 30s to near freezing in a few normally colder locations. High pressure will over the E-CONUS will exit the Carolina coastal region late Mon. This pattern will support widely scattered maritime showers for the adjacent waters and coastal zone thru mid-week in the presence of a subtle coastal trough.
330 PM EST Sun Jan 8 2017 Arctic high pressure crosses this evening/tonight.
are the highlights in the short term. an arctic cold front extended from near Devils Lake southward, and approaching the James River Valley. The arctic high pressure center was over northern Saskatchewan. Tonight the arctic high pressure center is forecast to move southeastward. For most of western and central ND, the afternoon will be a snow-free period, with temperatures reaching into the lower 20s in the far southwest.
1102 AM CST Sun Jan 8 2017 Latest 08z surface analysis indicates high pressure over southern Minnesota into northern Missouri.
Low temperatures Monday morning will be around 20 degrees and then we'll finally see above freezing temperatures Monday afternoon as temperatures rise to around 40 degrees.
The risk of freezing rain is small, but still present as the cold air erodes and mixes the air over night. Freezing rain has been reported near Burley and to the west of there.
305 PM EST Sun Jan 8 2017 Mainly dry and warmer conditions are expected tonight into Monday with lows in the teens tonight and highs in the upper 20s to near 30 degrees tomorrow.
The small craft advisory has been allow to expire over the gulf waters of AL and NWFL out to 60 nm including the lower end of Mobile Bay. Surface temperatures will slowly rebound to the lower to mid 40s by early to mid afternoon. The upper level trough over the Eastern Seaboard progresses eastward over the Western Atlantic through the day. The Arctic airmass over the region will be slow to modify with highs today only climbing into the low to mid 40s.
1016 AM CST Sun Jan 8 2017 Update to increase winds, especially southwest, behind the cold front/trough moving east across the state. Upper level analysis places modest ridge stretching from the Pacific Northwest towards the Great Basin with trough over the eastern United States. Warmer air tries to nudge over western locations, though this will be tough to do as cold airmass remains well entrenched over the area.
A warm front will bring rain and warmer temperatures to the area today.
Elsewhere expect mainly snow with only minor intrusions of sleet or freezing rain. The best chances of freezing rain this afternoon and evening will be along the Blue Mountain foothills from Heppner Oregon to Dayton Washington, the eastern portions of the Lower Columbia Basin of Oregon and the lower elevations of Deschutes and Jefferson counties.
903 AM PST Sun Jan 8 2017 Warmer and dry today as high pressure over Baja expands northward. A low pressure system moving into California late tonight and Monday will bring rain and strong gusty southwest to west winds to the mountains and deserts.
/issued 952 AM EST Sun Jan 8 2017/ Behind the cold front that blew through the region yesterday, cold and dry conditions have settled in, with widespread freezing temperatures being reported for several hours across Levy and Citrus counties, and a few isolated spots farther south also reporting brief sub-freezing temperatures. Model guidance is in good agreement that at least a couple hours of freezing temperatures will be felt in Levy and Citrus counties once again Monday morning. Although freezing temperatures will also be possible over isolated spots in Sumter and Hernando Counties and perhaps a few locations farther south, confidence is not as high in widespread freezing conditions.
126 PM EST Sun Jan 8 2017 Arctic High pressure will move in through Monday, providing cold temperatures. High pressure centered to our NW will shift to the ESE and set up over the Mid Atlantic/W Carolinas by late tonight. The center of the high may remain just to our N/NE and provide potential for a little wind staying up over portions of the FA. Some morning mid and high level clouds associated with short wave trough in northwest flow aloft should move east of the area with mostly sunny skies by afternoon. This will result in temperatures a few degrees warmer than Sunday but still around 15 degrees below climatology.
This character will induce a lower-deck surface trof to strengthen across the Western Plains that will likewise move E across the Northern Plains. The lower-deck SE flow will shift to the S/SW & increase to produce a strong warmup with about a 30F diurnal range likely. The ECMWF continues to depict the more ominous picture, especially for Southeast KS where a mixture of freezing rain & sleet may occur. Lee trough and associated pressure gradient will maintain diurnally strong southerly winds this afternoon, with peak gusts of 35-40 knots in central/south-central Kansas before speeds diminish toward early evening. diurnally gusty southerly winds developing late morning through the afternoon given the lee trough.