Aikyam-Lab/Synoptic-Bench huggingface dataset:
Otherwise high pressure near the west coast will keep dry conditions with above average temperatures and generally light winds for the next 7-10 days. A ridge near/off the coast will be the dominant player for the next 10 days. That said, it will not mix as well as yesterday, but highs in the low to mid 60s for the lower valleys and 50s in the Sierra will be common.
Central California remains under the influence of a ridge of high pressure over the eastern Pacific. Models continue to be in good agreement in amplifying the ridge over the next several days, creating a blocking ridge pattern over the west coast. The mainly clear skies and calm conditions under the ridge are creating good conditions for fog development this morning.
934 AM EST Wed Jan 31 2018 High pressure ridge will continue to the Northeast this afternoon producing mainly clear skies.
Chattanooga Airport, TN 55 38 55 30 / 0 10 70 70 Knoxville McGhee Tyson Airport, TN 53 37 54 28 / 0 10 80 90 Oak Ridge, TN 53 37 53 27 / 0 10 80 90 Tri Cities Airport, TN 51 31 52 24 / 0 10 90 90.
Main issue for today will be the area of low pressure and associated cold front that drop south/southeast across the region. Cold front will also be dropping south through the area this afternoon, with breezy/gusty northerly winds behind it, and strong cold air advection ramping up.
With secondary SFC cold front and tightening baroclinic zone at 850mb to 700mb aiding frontogenetic lift will see the cloud band and flurries shift to the south throughout the day. The initial cold front is now through the region. A secondary cold front will propagate through the region from north to south this afternoon. Also expect increased cloud cover and possibly flurries with the passage of this secondary cold front.
540 AM CST Wed Jan 31 2018 Early this morning, a cold front was progressing eastward across Iowa/Minnesota. The mild temps will be short-lived as a secondary cold front quickly swings through tonight with the true push of Arctic air. Boundary layer wind fields will gradually relax through the day with the approach of high pressure, but winds will stay breezy through the day with 20-30 kts of flow in the mixed boundary layer.
919 AM EST Wed Jan 31 2018 High pressure over the Mid Atlantic region will move off the coast today.
The rest of today will be a pleasant day with temperatures a few degrees warmer than yesterday, ranging in the upper 60s to lower 70s. For Thursday, even warmer conditions are expected warming into the 80s with a west-southwest flow setting up around H85. Onshore winds should begin to diminish and become variable through the late afternoon as a prefrontal trough sets up across the region.
1047 AM EST Wed Jan 31 2018 Low level flow continues to veer and weaken this morning as high pressure settles over the southeast and its axis moves closer to the state. Winds will be improve faster than seas today as high pressure settles closer to the area.
Surface analysis places a ridge of high pressure over portions of the Southeast United States and Lower Mississippi Valley. Southerly winds on the backside of high pressure will result in temperatures moderating into the 50s across the Mid-South today with rain free weather expected. However, this warm up is not expected to last long as a cold front currently over the Upper Plains will drop southeast into the Lower Mississippi Valley on Thursday. High pressure will build in behind this front with Cold Air Advection keeping highs mostly in the 30s with the exception of Northeast Mississippi where temperatures may recover into the lower 40s.
518 AM CST Wed Jan 31 2018 A weak cold front will push through all of the TAF sites by late this morning, turning the winds around to the north and northeast. High temperatures today should exceed normals by 10 to 25 degrees Fahrenheit, north to south respectively, prior to the arrival of a weak cold front.
924 AM EST Wed Jan 31 2018 High pressure will cross the region today. A warm front will approach the region from the southwest tonight and cross the region Thursday.
Temperatures are in the lower 60s. In the low levels of the atmosphere, a large area of high pressure will be centered near the Carolina coastline this afternoon. In the mid levels of the atmosphere, an area of high pressure will be located over the southeastern Gulf of Mexico today.
404 AM CST Wed Jan 31 2018 Main issue for today will be the area of low pressure and associated cold front that drop south/southeast across the region. Cold front will also be dropping south through the area this afternoon, with breezy/gusty northerly winds behind it, and strong cold air advection ramping up.
400 AM MST Wed Jan 31 2018 Flow becomes more northwesterly across eastern Utah and western Colorado today as a high pressure ridge builds off the West Coast while the trough over the central U. As mentioned in previous discussions, this pattern shift will allow a cold front to drop southward across northeast Utah and northwest Colorado. Temperatures across the north will be a bit cooler behind the cold front today, but will still be well above seasonal norms despite the influx of cooler air.
As high pressure pushes east of the area during the TAF period. Will see a mix of clouds and sun this afternoon then clouds will slowly increase and lower late tonight as a cold front begins its approach towards the area.
518 AM CST Wed Jan 31 2018 Southerly winds continue to gust up to 30 mph in some areas early this morning, and this has helped keep temperatures fairly steady in the lower 30s. The cold front associated with low pressure in western Ontario will move into our area around midday to early afternoon, but little impact is expected initially. The second cold front, ushering in the next Arctic air mass, will begin moving through the forecast area Thursday morning.
Currently, air temperatures range from the mid 50s in the upper Keys to near 60F throughout much of the lower and middle Keys.
Trof deepens over much of the CONUS with northwest flow into the northern plains. Weak cold front will slide south across the cwa today bringing the potential for a little light snow. Canadian high pressure dominates the northern plains on Thursday for a dry but cold day.
432 AM MST Wed Jan 31 2018 Current surface analysis shows initial cold front well south and east of the area, from MN to southern NE. Secondary cold front is located across southern ND into northeast MT. Upper level analysis shows low pressure over eastern Manitoba, with large scale trough extending southward into the upper midwest and Great Lakes region. Secondary cold front to the north will push slowly south through the area today. Highs will range from the lower 30s across far northwest SD and the higher Black Hills to the low to mid 40s across southern SD. Thursday will be cold, but mainly dry, as high pressure passes to the north of the area.
855 AM EST Wed Jan 31 2018 A cold front crosses Thursday, bringing rain. As high pressure moves off to the east today, a decent southwesterly wind flow will develop. With these winds, will go toward the warmer side of MOS guidance for highs. Winds will continue tonight as clouds increase in advance of an approaching cold front. With the clouds and wind, will go toward the warmer side of MOS guidance for overnight lows. The mean longwave trof will amplify yet again into the region with an associated cold front slated for Thursday evening.
Flat high pressure aloft over the west coast bringing dry conditions with mainly fair skies. Surface winds in this area are calm this morning with variable high clouds spilling over the ridge so not expecting the fog to become widespread.
The initial cold front is now through the region. A secondary cold front will propagate through the region from north to south this afternoon. Also expect increased cloud cover and possibly flurries with the passage of this secondary cold front.
310 AM MST Wed Jan 31 2018 Current surface analysis shows initial cold front well south and east of the area, from MN to southern NE. Secondary cold front is located across southern ND into northeast MT. Upper level analysis shows low pressure over eastern Manitoba, with large scale trough extending southward into the upper midwest and Great Lakes region. Secondary cold front to the north will push slowly south through the area today. Highs will range from the lower 30s across far northwest SD and the higher Black Hills to the low to mid 40s across southern SD. Thursday will be cold, but mainly dry, as high pressure passes to the north of the area.
These conditions should continue until around 15-16z when southwest flow is expected to increase and begin to clear out that low-level moisture causing the low clouds and fog. A cold front will be on approach Thursday, arriving in the northern zones around the noontime hour and exiting the CWA to the south by Thursday evening.
Mild winter weather can be expected across NW CA for the next several days as high pressure builds across the region. An upper ridge of high pressure over the Pacific will shift eastwards toward the west coast through the remainder of the week. Weak upper disturbances will generally progress through the top of the ridge, and thus remain too far north to aid in precipitation generation over northwestern California. Meanwhile at the surface, a strong area of high pressure will develop beneath the ridge. Northerly winds will peak today over the S outer waters as high pressure builds northeast of the area and a thermal trough develops over land.
748 AM EST Wed Jan 31 2018 Clear and cool start to the day across the region, but the low level easterly flow will begin the moderating trend with temperatures quickly rising into the mid 60s to lower 70s this afternoon.
Southerly breezes winds will increase today as the quad state region becomes sandwiched between high pressure along the southeast coast and a cold front pushing southeast into the upper MS River Valley. Aforementioned cold front will push slowly southeast into the region later tonight and on Thursday, bringing a good chance for light rains over western KY. Much colder air will move in behind the cold front later Thursday and Thursday night.
635 AM EST Wed Jan 31 2018 High pressure will cross the region today. A warm front will approach the region from the southwest tonight and cross the region Thursday.
429 AM CST Wed Jan 31 2018 Very high fire dangers will continue across Eastern Oklahoma and parts of Northwest Arkansas today ahead of an approaching cold front. The cold front is forecast to move into Northeast Oklahoma late this afternoon and exit Southeast Oklahoma and Northwest Arkansas Thursday morning.
346 AM MST Wed Jan 31 2018 A Canadian cold front will pass through North-central Montana today, producing areas of light snow during the afternoon and evening hours.
The northwest flow pattern aloft gradually transitions zonal later this afternoon into tonight, while surface flow gradually becomes southeasterly to southerly later today as the ridge of high pressure continues to progress eastward. Temperatures will be a little warmer across the region today, with highs mostly around 60 to the lower 60s. Increased low level moisture will also lead to warmer overnight lows tonight in the 40s to around 50 degrees.
555 AM CST Wed Jan 31 2018 Models in better agreement today in the near term with cold air advection continuing behind a cold front that moved through early this morning. Lows tonight in the low teens north to around 20 south.
Winds will begin to subside across northeast Oklahoma this afternoon ahead of cold front which will move into northeast Oklahoma by late afternoon. /Issued 429 AM CST Wed Jan 31 2018/ Very high fire dangers will continue across Eastern Oklahoma and parts of Northwest Arkansas today ahead of an approaching cold front. The cold front is forecast to move into Northeast Oklahoma late this afternoon and exit Southeast Oklahoma and Northwest Arkansas Thursday morning.
508 AM CST Wed Jan 31 2018 Next several days are mainly a temperature forecast as a cold front pushes harmlessly through the forecast area later this morning.
640 AM EST Wed Jan 31 2018 Cold high pressure will move offshore by Thursday.
A Canadian cold front will pass through North-central Montana today, producing areas of light snow during the afternoon and evening hours.
539 PM CST Thu Feb 1 2018 Cold high pressure has settled into the Northern Plains with upper level subsidence providing plenty of sunshine other than some flat low level CU. Warming over SW MN will be the most tempered as highs will likely only reach the low to mid 20s over this region.
617 PM CST Thu Feb 1 2018 Many northern and metro terminals will remain VFR through midnight and fall into MVFR cats shortly thereafter with the approach and passage of this evening's cold front. /ISSUED 344 PM CST Thu Feb 1 2018/ Cold front/pre-frontal trough currently making its way into SE TX this afternoon, but not seeing a lot of activity with its passage thus far. The persistent sub-tropical jet pattern should keep things active across SE TX for this weekend as a series of disturbances move in from the west/southwest and interact with a warm front lifting up from the Gulf. Elevated rain chances will continue into Sun, with the passage of the next cold front. Models shunting the brunt of the coldest air off to our east as the associated upper low quickly tracks NE ac- ross the Northern Plains.
Upper ridging continues near 130 W with some high clouds tracking through the area. AMS has warmed today with afternoon temperatures running upwards of 10 degrees warmer.
/Issued 347 PM CST Thu Feb 1 2018/ Latest surface analysis shows cold front now south of the Red River, with temperatures in the single digits and teens across the Dakotas.
High pressure over the western states will result in dry weather and well above average temperatures through the coming week.
228 PM PST Thu Feb 1 2018 High pressure will strengthen along the west coast through the next 10-14 days. High pressure pumps up along the West Coast for the next few days, bringing unseasonably warm and dry conditions through the weekend. The only other warmer January was back in 2003.
Meanwhile, local radars are detecting patches of sprinkles with an occasional light shower on the nearshore and offshore waters south of the Lower Keys. Surface wise, the persistent western Atlantic ridge axis extending across north Florida has weakened about 3 mb over the last 12 hours. Although weak upglide will persist for the majority of tonight, the western Atlantic ridge extending across extreme south Florida and our region will limit the depth of moisture.
419 PM MST Thu Feb 1 2018 Main concerns through Friday will be with winds in the wind prone areas, then with increasing snow over the higher mtns. Warmer Friday as the cold surface airmass banked up against the mtns erodes east and warmer downslope flow ensues.
Cold front has now passed by all TAF sites, and surface winds have become northerly.
618 PM EST Thu Feb 1 2018 A cold front will cross the region early Friday morning.
515 PM CST Thu Feb 1 2018 Quiet weather tonight as high pressure continues to build into the area. As low level warm air advection develops Friday morning, the Nam and the Highres/NMM are suggesting that a few flurries could occur in northeast NE and and northwest/west central IA Friday.
Update this evening for locations near the southeast shore of Lake Chelan and extending a bit into a small portion of the Wenatchee area to include a mention of pockets of light freezing rain. /Pelatti 00Z TAFs: A warm front is developing over the region laying from west to east this afternoon. Light precipitation with mostly MVFR ceilings will develop at all TAF sites between 00Z and 03Z and continue through the night over the eastern TAF sites and through 06Z-07Z over the western TAF sites as a cold front crosses the Cascades tonight and allows a rain shadow to develop in the KEAT and KMWH TAF sites.
Brisk north winds in the wake of the front will usher cooler/drier air into the region, with temperatures Friday morning running around 10 degrees cooler than they were this morning. Temperatures tomorrow will struggle against this CAA and a persistent cloud deck, reaching only the lower/mid 50s. Coverage will increase SAT morning aided by a weak frontal trof/wave progged to develop over the NW Gulf. A cold front will push through the coastal waters after midnight, eroding any sea fog and ushering in moderate to strong and gusty north winds along with building seas.
Winds will lighten tonight with low clouds and fog developing ahead of an approaching cold front. /issued 338 PM CST Thu Feb 1 2018/ SHORT TERM (Tonight through Friday Night): The broad and deep 500 mb trough will dive around the central and eastern States tonight and Friday. This will push a cold front through the RGV later tonight through sunrise Friday. Surface coastal troffing is expected to form up on Fri and will likely continue into Fri Night which will maintain some potential for persistent areas of light rain/drizzle. The surface wind flow will become light and variable over much of the RGV and Ranchlands as the cold front approaches the region setting the stage for fog formation later tonight. However if the cold front slows up a bit a dense fog advisory may be needed.
Mild and dry conditions are expected across the region during the next 7 days as high pressure dominates the weather pattern. Few changes have been made to the inherited forecast, as models continue to show an upper ridge over the Pacific remaining quasi-stationary through the next 7 days. Northwest California will generally reside beneath northwest flow aloft along the east side of the ridge. In addition, large-scale subsidence forced by the ridge combined with a residually humid boundary layer will aid in patchy valley fog.
/issued 419 PM EST Thu Feb 1 2018/ Tonight through the upcoming weekend: high pressure over the western Atlantic which has been providing gusty NE winds the past 2 days will weaken tonight and Friday, leading to a lighter wind regime at least through Friday. A few showers could make their way back to the east coast metro areas on Friday as convergence increases ahead of the next cold front moving down the state, but POPs remain no higher than 20 percent. The cold front will move through South Florida Friday night, but unlike the past couple of fronts, this one is in a mostly zonal (west to east) mid/upper level pattern.
534 PM CST Thu Feb 1 2018 A cold front has moved through the area this afternoon.
730 PM CST Thu Feb 1 2018 Low/mid clouds over southern Arkansas will exit the region with a cold front toward the Gulf Coast tonight.
Cold frontal passage is complete as is the change to snow. The Winter Weather Advisory for the ridges remains intact with initial accumulation noted - totals were bumped up slightly for the overnight period. With an approaching upper trough and strong cold advection, lake/terrain enhancement will result in additional snow showers overnight, as wrn and central portions of Lake Erie are ice free. The upper trough, combined with lake and terrain enhancement, should maintain sct-nmrs snow showers through part of Friday.
325 PM MST Thu Feb 1 2018 Temperatures are expected to be cooler tonight due to the presence of snow on the ground and decreasing clouds. The plains will remain mostly dry through Friday with the mountain ridges receiving up to an additional 6 inches of snow accumulation.
High pressure will build in its wake for Friday, settling southeast of the are overnight.
An advisory will be in place from 6 PM - midnight for portions of the Upper Cumberland where 1 inch is likely, and a few of the higher places could have up to 2. Rains have finally moved into Middle TN this afternoon as a cold front approaches from the northwest. Everybody in the mid-state is currently in the mid-40s or warmer, but wind shifts are already being seen across the northwest and KBNA winds have shifted to the northwest this past hour.
Lower ceilings are expected during the evening ahead of an approaching cold front. Brisk north winds in the wake of the front will usher cooler/drier air into the region, with temperatures Friday morning running around 10 degrees cooler than they were this morning. Temperatures tomorrow will struggle against this CAA and a persistent cloud deck, reaching only the lower/mid 50s. Coverage will increase SAT morning aided by a weak frontal trof/wave progged to develop over the NW Gulf. A cold front will push through the coastal waters after midnight, eroding any sea fog and ushering in moderate to strong and gusty north winds along with building seas.
Otherwise, no significant changes were made to the remainder of tonight's forecast; chances of light rain showers will push farther southeast across most of our area by the early morning as a weak cold front moves southeast into our northwestern area.
956 PM CST Thu Feb 1 2018 Breezy northerly winds with the passage of a cold front persists across portions of the ARKLATEX, though speeds have come down across portions of northwest LA, northeast TX and north central LA. A cold front has moved through much of the forecast area and was located to the South of a KTVR to near KIER and KOCH line. /issued 248 PM CST Thu Feb 1 2018/ Cold front from near Mineola to El Dorado continues to make its way swd this aftn. Strong nly winds in the wake of the front tonight /Lake Wind Advisory remains in effect from 4 PM to midnight for portions of the region/ will help usher in a much cooler airmass that will keep us from getting out of the 40s and 50s for daytime highs Friday.
713 PM EST Thu Feb 1 2018 A cold front will move through late tonight.
A cold front currently across central Texas will continue moving south through the region overnight into early Friday morning. Friday will feel notably cooler compared to today, with highs only reaching the upper 50s to lower 60s. Overcast skies and weak to moderate winds tomorrow night though will prevent much radiational cooling, with lows only a few degrees cooler than tonight.
541 PM CST Thu Feb 1 2018 Mid afternoon surface map shows a strong cold front pushing southeast into southeast KY, mid TN and nw MS. 1036 mb arctic high pressure was over se Saskatchewan and North Dakota and ridging into the Central Plains. Temps were in the lower 20s north of I-72 with Galesburg at 19F while temps have fallen to around 30F in southeast IL. A very cold night ahead as skies clear with arctic high pressure building into MO/IA by dawn Fri. 1037 mb arctic high pressure will drift into the mid MS river valley by midday Friday and bring a sunny but cold day in the low to mid 20s across central/se IL.
929 PM EST Thu Feb 1 2018 A cold front will move across the region overnight with snow showers and minor snow accumulations. An arctic cold front, in the vicinity of the Finger Lakes at 930PM, continues to advance across Western NY. Lesser amounts expected along the Chautauqua ridge.
538 PM CST Thu Feb 1 2018 Updated for 00Z aviation discussion 00Z TAF discussion: A cold front moving through the area will promote MVFR conditions with scattered to numerous showers along and ahead of it. While the low levels have ample moisture, the air above 850 mb is still very dry, thus the showers will remain shallow and light. These gusty north winds will be advecting in much cooler and drier air and so temperatures Friday morning will range from the freezing mark in our northern counties to near 40 in the Pine Belt. Conditions will be cooler and drier on Friday with highs in the mid 40s to mid 50s from north to south.
535 PM CST Thu Feb 1 2018 It's been a cold February day across Kansas and Missouri thanks to the dry cold front moved through early this morning, allowing a cold north wind to prevail through the day.
656 PM EST Thu Feb 1 2018 A cold front will move across the region this evening snow showers and minor snow accumulations. An arctic cold front, in the vicinity of the Genesee Valley at 7PM, continues to advance across Western NY. Lesser amounts expected along the Chautauqua ridge.