Aikyam-Lab/Synoptic-Bench huggingface dataset:
- Well above average to near record highs continue into Friday, before temperatures cool behind a cold front for the weekend. The cold front will then pass a little later this evening while the attendant occluded low moves from nrn MN into Ontario. The low will then move toward James Bay, Canada on Fri with breezy swly winds and still mild temps over srn WI. Weakening nwly sfc winds and dry conditions are expected for Sat but cooler.
- Cooler most locations Friday following a cold front dropping south through the area.
(This afternoon through Friday) High pressure ridge currently stretches from the Delmarva Peninsula back through northeast GA. The ridge will move offshore tonight as a frontal boundary approaches from the north and west. Not confident on exactly how far south the boundary will make it into GA, so the highest pops should remain along the NC/TN/GA border.
326 AM EST Fri Feb 9 2024 A south to southwest flow will continue to pull in warm air until a cold front crosses on Saturday.
Only as the high moves further east during the day, will any of the activity move eastward. The closest front will be well west of the area, associated with a low pressure system in the Plains. This will allow a cold front to stretch from southern Michigan through eastern Texas by Saturday morning.
This afternoon winds behind the cold front are west- northwesterly sustained at 15-20 mph with gusts 25-30 mph. Surfaces that are still wet from today's precipitation may become slick in areas that dip below freezing tonight. Highs will be a little cooler than they've been, but still 5- 10 degrees above average for this time of year, in the upper 30s to low 40s. The weekend begins with high pressure sliding into the Northern Plains on Saturday. With a cooler airmass in place, high temperatures will remain relatively cooler in the 30s to up to around 40 degrees F across parts of northwest Iowa. Overnight low temperatures will follow a similar trend of cooler, but above average low temperatures with lows in the 20s.
Tonight, the chance for showers and even some thunderstorms ramps up as a secondary warm front lifts in.
The area will be under the front side of an east Pac ridge tomorrow and this will end the shower threat and kick off a slight warming trend. ***From Previous Discussion*** A ridge of high pressure is developing over the eastern Pacific through Saturday while a trough develops over the Great Basin region. Some storm energy will deepen the trough Friday night over southeastern California with a small upper low developing there and moving into AZ on Saturday.
Snow showers will spread across the area Friday morning, continue mainly over the higher elevations in the afternoon, then end by early evening. Locally up to 6 inches are possible in the higher mountains, including the Owyhees.
1229 AM EST Fri Feb 9 2024 High pressure moving offshore brings a warming trend through Saturday.
Speaking of the mixed layer, with little to no snow left across the area and model soundings indicating mixing above 900 mb, will lean a little warmer than NBM guidance as 925 mb temperatures around zero would support highs around 40 along I-90, a touch warmer south and a touch cooler to the north. With northwest winds continuing around 10 mph leaned a touch warmer than guidance again tonight, generally lows in the mid 20s. As low pressure shifts east slightly colder air will move into the area for Saturday, which will result in highs mostly in the 30s, still well above normal.
With the high out of the way, a weak frontal boundary will make its way into Northwest GA early this morning, initiating SSW flow across across North and Central GA. Moving into Saturday, a second wave of moisture will move into the area with the approaching trough.
The cold front has moved through the Phoenix Metro and is continuing to move into eastern Arizona. An additional low pressure system will move through our area Friday into Saturday bringing additional rainfall to the region.
Change in weather pattern due to ridging influences shifting further eastward with time, development of progressive southwesterly flow aloft pattern supporting embedded numerous short wave passages, and a surface front currently down through MS River Valley into Southern Plains that will push eastward, eventually pushing through mid state region as Saturday progresses.
1122 PM CST Thu Feb 8 2024 (This afternoon through Friday night) On the backside of the upper trough that provided yesterday's Pacific front and winds, southwesterly flow aloft has been established and will persist throughout the short term.
Precipitation chances increase considerably late Friday night as an approaching cold front pulls moisture northward.
400 AM EST Fri Feb 9 2024 High pressure will continue across the area through the weekend, with temperatures and moisture increasing.
ARS Several upper level disturbances and a cold front will result in an unsettled weather pattern beginning this evening.
Currently - Deep layered ridging is firmly in control of our weather this evening. Rapid moderation is taking place temperature are currently still near 70 with dew points slowly climbing through the lower 60s. Short Term Update - Large scale ridging will remain in control through the overnight. Showers should have a tough time due to surface dew points remaining in the lower 60s.
The focus of accumulating snow through midday Saturday will be across northern Wyoming, including the Bighorn Range and the lower elevations of the Bighorn Basin.
Aloft, southwest flow ahead of an mid/upper level trough in the Intermountain West will continue through the day today.
254 AM CST Fri Feb 9 2024 - Cooler than the last several days, but still warmer than normal.
248 AM EST Fri Feb 9 2024 High pressure moving offshore brings a warming trend through Saturday.
Hi-res guidance trended slightly warmer with overnight temperatures, but a few locations north of Interstate 4 could approach the low 50s or upper 40s briefly Friday morning.
pdf High pressure will dominate the pattern today with some patchy, locally dense fog over the land areas through mid morning and over the near shore coastal waters into the early afternoon. High temperatures today will be in the lower to mid 70s over SE Georgia and the mid to upper 70s over Florida.
(Today through Saturday) The mid-to-upper level ridge will remain the dominant feature influencing the local weather as the weekend approaches, resulting in dry weather conditions prevailing. As high pressure shifts into the western Atlantic, winds shift further from northeasterly to an easterly direction.
Snow and/or wet roads freezing will bring some difficult travel conditions this morning, especially during the morning commute. A weak dirty ridge of high pressure will build over the Pacific NW this weekend.
Lift from the low is too far to the west so no precipitation is expected. The upper low reaches New Mexico on Saturday along with a large swath of mid and upper level dry air (dry slot) for most of the area bringing clearing skies.
Light snow continues this morning across the region as upper level troughing is exiting to our east today. Winter weather driving conditions can be expected for this mornings commute (primarily between 5 AM and 9 AM) as road surface and air temperatures are below freezing with snow going to initially stick onto pavements. Upper level ridging builds in for tomorrow, with clearing skies tonight as our weather system moves out of the region.
407 AM CST Fri Feb 9 2024 - Cooler than the last several days, but still warmer than normal.
956 AM EST Fri Feb 9 2024 High pressure moving offshore brings a warming trend through Saturday.
all areas are below freezing. There is a short wave trough passing thru Sat night but at this time no precipitation is mentioned.
Partly cloudy and mild conditions prevail along the Florida Keys on this early Friday morning, with temperatures in the mid to upper 60s, dewpoints in the lower to mid 60s, and winds on land from the NE to E around 10 mph. Surface analysis depicts expansive high pressure sprawling along the Eastern Seaboard and southward into Florida. Aloft, our region lies under a deep ridge, between longwave troughs over the western Atlantic and the western CONUS. Mainly dry weather with a slow warming trend will prevail across the Keys through the weekend, as a deep longwave trough in the western CONUS progresses slowly eastward, while the subtropical ridge axis also shifts slowly eastward to eastern Cuba. At the surface, high pressure initially along the Eastern Seaboard will drift slowly but steadily eastward over the western Atlantic.
Snow looks to remain fairly light over the west, with up to a couple inches for the mountains, and less than an inch for the lower elevations through Saturday. Favored upslope could also bring heavier snow to the lower elevations of the southern Bighorn Basin and western Johnson County. The highest peaks of the Bighorns could see up to around 12 inches of snow by the end of Saturday. During the peak snow rates, (roughly 5pm Friday to 5am Saturday) as the trough moves southward over northern Wyoming, some gusty winds to around 25 mph are possible for the Bighorn Basin and into the Wind River Canyon. The trough moves eastward late Saturday, lowering the snow chances across the area to near zero by midnight.
516 AM CST Fri Feb 9 2024 Updated aviation portion for 12Z TAF issuance - Cooler temperatures return today. and Saturday Gusty westerly winds are expected today behind a departing cold front. Highs today are expected to be cooler; ranging from the middle 30s across the north, to the lower 40s across east- central Wisconsin and the lakeshore. High pressure building in from the west will eventually end the snow across the far north late Saturday afternoon as drier air advects in from the west. Despite the cooler temperatures, temperatures will remain 5 to 10 degrees warmer than normal for highs and 15 to 20 degrees warmer for lows.
A couple of weak waves and cold fronts will bring a slight chance for light precipitation and somewhat cooler temperatures by the end of the week.
The system will drag a cold front into Arkansas from the northwest. As the short term progresses, troughing over the western states will become more pronounced with time.
303 AM CST Fri Feb 9 2024 Forecast discussion for routine morning forecast issuance - Cooler temperatures return today. and Saturday Gusty westerly winds are expected today behind a departing cold front. Highs today are expected to be cooler; ranging from the middle 30s across the north, to the lower 40s across east- central Wisconsin and the lakeshore. High pressure building in from the west will eventually end the snow across the far north late Saturday afternoon as drier air advects in from the west. Despite the cooler temperatures, temperatures will remain 5 to 10 degrees warmer than normal for highs and 15 to 20 degrees warmer for lows.
623 AM EST Fri Feb 9 2024 (Today through Saturday) The mid-to-upper level ridge will remain the dominant feature influencing the local weather as the weekend approaches, resulting in dry weather conditions prevailing. As high pressure shifts into the western Atlantic, winds shift further from northeasterly to an easterly direction.
548 AM EST Fri Feb 9 2024 High pressure moving offshore brings a warming trend through Saturday.
The morning is off to a quiet start with sprawling high pressure in control. High pressure will continue across the area through the weekend, with temperatures and moisture increasing.
516 AM CST Fri Feb 9 2024 (Today and tonight) A weak, progressive upper level low will shift from southern Colorado this morning into western Kansas by sunset.
409 AM CST Fri Feb 9 2024 - Well above average to near record highs continue today, before temperatures cool behind a cold front for the weekend. Given the better chance for sunshine and warmer temps aloft ahead of an approaching front, expecting the mildest high temps in the southeast today. Lingering clouds tonight should clear out overnight as high pressure begins to build into the area. Temps will fall back below freezing tonight behind the cold front, with highs only in the mid to upper 30s Saturday.
* As we head into the weekend, high pressure builds over the Eastern Pacific, displacing the longwave trough over the western US to the east. Strong north-northeast ridge winds will develop in response to the tightened height gradient across the Sierra, with gusts peaking 60-70 mph late tonight into Saturday morning, leading to backcountry recreation impacts, dangerous wind chills of -15 to - 25 degrees, and potentially choppy lake conditions on Lake Tahoe.
955 AM EST Fri Feb 9 2024 A south to southwest flow will continue to pull in warm air until a cold front crosses on Saturday.
Moist northwest flow will continue to stream moisture into western Washington this morning as high pressure slowly amplifies inland. Conditions will dry out this afternoon and continue into early Saturday as the ridge axis passes overhead.
(Today and tonight) A weak, progressive upper level low will shift from southern Colorado this morning into western Kansas by sunset.
An accompanying cold front will move through by late morning/early afternoon, causing winds to veer from west to northwesterly and pick up some. Snow showers will also accompany the cold front as it makes its push across the state through the day. Quiet weather returns as ridging begins to work its way in later in the day and stick around for a while.
So did back off on the high pops we had thru mid morning. all areas are below freezing. There is a short wave trough passing thru Sat night but at this time no precipitation is mentioned.
The snow and cooler temperatures today will lead to slick spots on untreated area roads. - Cooler temperatures, compared with the past few days, will occur through the rest of the period but most days will remain on the warm side of normal. Satellite, radar, and observations show low pressure over/near the tip of the Arrowhead early this morning. With temperatures falling below freezing this morning, untreated roads will likely become slick. The higher amounts are expected with the gravity wave and in the snow belt of Iron County.
A cold front will move into the NW portion of the area with a good amount of moisture streaming along it.
A cold front located across southern and central KS this morning will slowly push south through tonight and by afternoon will be near the OK/KS border.
344 AM MST Fri Feb 9 2024 Two more low pressure systems will move through the Desert Southwest, reinforcing the below normal temperatures today and bringing additional precipitation to the region tonight and again Saturday.
641 AM EST Fri Feb 9 2024 A south to southwest flow will continue to pull in warm air until a cold front crosses on Saturday.
- Cooler temperatures with isolated lake effect snow showers Saturday. An attendant cold front will swing across northern Michigan this morning, with a potential, more subtle, front moving across northern Michigan later tonight. today into tonight in closer proximity to more favorable moisture associated with the aforementioned cyclone. Temperatures will then cool into the low 30s tonight, reintroducing light snow chances to the forecast late this evening into Saturday morning across parts of the eastern U.
- Areas of freezing fog possible tonight through Saturday morning. Tonight, models suggesting freezing fog will begin to develop around 06z and increase in coverage 06-12z, especially across southern areas where fog may be dense at times.
508 AM CST Fri Feb 9 2024 - Cooler than the last several days, but still warmer than normal.
The mid and lower levels are expected to be fairly dry across most of the area, but some moisture at around 850 mb will spread from northeast Texas toward southeastern Oklahoma which could be enough for some showers and perhaps thunderstorms to develop across far southeastern Oklahoma late this afternoon, although the higher chances will be southeast of the forecast area.
934 AM EST Fri Feb 9 2024 High pressure has moved offshore the SE US coast. With the high out of the way, a weak frontal boundary will make its way into Northwest GA early this morning, initiating SSW flow across across North and Central GA. Moving into Saturday, a second wave of moisture will move into the area with the approaching trough.
High pressure continues aloft with a pleasant weekend in store.
Today and Saturday Current water vapor imagery shows a broad, deep trough over Idaho, Wyoming, Utah and Colorado with strong high pressure ridging aloft off the Pacific coast. There is a deep upper level low over southern Colorado and an upper level low over eastern Idaho in this broad trough. For today, the upper level low over eastern Idaho will bring mostly light snow with some moderate snow to our area. Currently Pocatello has 2 inches of snow in the forecast but could see up to 3 (possibly 4) inches as the High end amount with only a 10 % chance of occurrence. The low end amount is 0 inch of snowfall with a 90% chance of getting more snow than 0 inch. Saturday high pressure builds in across the area from the west bringing mostly dry conditions.
Two more low pressure systems will move through the Desert Southwest, reinforcing the below normal temperatures today and bringing additional precipitation to the region tonight and again Saturday.
1145 AM CST Fri Feb 9 2024 - Cooler than the last several days, but still warmer than normal.
1222 PM CST Fri Feb 9 2024 Updated aviation portion for 18Z TAF issuance - Cooler temperatures return today. and Saturday Gusty westerly winds are expected today behind a departing cold front. Highs today are expected to be cooler; ranging from the middle 30s across the north, to the lower 40s across east- central Wisconsin and the lakeshore. High pressure building in from the west will eventually end the snow across the far north late Saturday afternoon as drier air advects in from the west. Despite the cooler temperatures, temperatures will remain 5 to 10 degrees warmer than normal for highs and 15 to 20 degrees warmer for lows.
Cigs should gradually increase for most terminals later this afternoon and evening as high pressure builds in, but we may develop some fog if we clear out early overnight with calm winds. /ISSUED 437 AM MST Fri Feb 9 2024/ Light snow continues this morning across the region as upper level troughing is exiting to our east today. Winter weather driving conditions can be expected for this mornings commute (primarily between 5 AM and 9 AM) as road surface and air temperatures are below freezing with snow going to initially stick onto pavements. Upper level ridging builds in for tomorrow, with clearing skies tonight as our weather system moves out of the region.
(The rest of today ) Thick cirrus will continue to spread across the region and help keep temps slightly cooler than recent days.
Surface analysis places an area of high pressure now pushing just offshore of the Eastern Seaboard. A mid- and upper- level ridge continues to be centered over the Gulf of Mexico. Temperatures across the island chain are generally in the lower to mid 70s at this late morning hour, and will continue to warm throughout the day. Significant dry air associated with the mid-level, ridge- driven subsidence was also sampled above 750 mb. From synopsis, high pressure will drift slowly eastward over the western Atlantic through the weekend, with moderate to occasionally breezes gradually veering from east to southeast across the Keys coastal waters.
- A chance for light snow (10-30%) possible next Friday as a cold front tracks south across the local area.
251 PM CST Fri Feb 9 2024 - Patchy freezing possible fog after midnight north west of Garden City. A stationary front has stalled out near the highway 400 corridor this afternoon. To the north a overall cooler airmass was in place with northeast upslope winds enhancing the advancing cu field developing over northwest, west central Kansas and southeast Colorado. A limited area of west central Kansas This will setup colder temperatures with clouds spreading over the area Saturday in advance of the incoming trough from the west. Drizzle or rain showers might be expected anywhere west of the highway 283 corridor beginning in the afternoon, but the better rates wonât be noted until the late evening hours when snow probabilities jump to the 50-75 percent range across the southwest counties nearing midnight.
Mostly dry conditions are forecast continue today as the mid/upper level ridge axis builds over the state of Florida.
(Rest of today through Saturday) A subsidence inversion remains in place across South Florida as a mid- level ridge continues to nose-in across the region. A slight moistening of the low-level boundary layer from the surface to 850mb will allow for some shallow strato-cumulus clouds to propagate across the area with minimal impacts aside from drizzle or isolated instances of light rain. Temperatures will only drop into the upper 60s along the east coast of South Florida with a few spots near the coast staying in the low 70s.
Cloud cover will stick around overnight while the broad area of low pressure crawls northeastward through Canada.
Moist northwest flow will continue to stream moisture into portions of western Washington this morning as high pressure slowly amplifies inland. Conditions will dry out this afternoon and continue into early Saturday as the ridge axis passes overhead.
Soundings suggest a pretty dry airmass will counteract any UVM, and thus don't expect much more than perhaps few flurries/spkls as trof axis rotates through.
A weak upper level trough will move over the area today, bringing light snow much of the region.
/ISSUED 437 AM MST Fri Feb 9 2024/ Light snow continues this morning across the region as upper level troughing is exiting to our east today. Winter weather driving conditions can be expected for this mornings commute (primarily between 5 AM and 9 AM) as road surface and air temperatures are below freezing with snow going to initially stick onto pavements. Upper level ridging builds in for tomorrow, with clearing skies tonight as our weather system moves out of the region.
First area is the west central NV basin from US-95 eastward, associated with cyclonic flow around the upper low dropping across far eastern NV. * GUSTY RIDGE WINDS/WIND CHILLS TONIGHT-SATURDAY: As high pressure builds over the eastern Pacific and the upper low drops to near the Four Corners this weekend, gradients will increase over the Sierra with northeast-east ridge wind gusts increasing to 60-70 mph later tonight through Saturday afternoon.
1129 AM CST Fri Feb 9 2024 (The rest of today ) Thick cirrus will continue to spread across the region and help keep temps slightly cooler than recent days.
- Temperatures trend cooler this weekend, but stay slightly above normal, with highs in the 40s.
An additional 1 to 2" is expected, with the highest amounts across the southeastern portions of the area.
Tonight and Saturday A weak upper low can be seen on satellite imagery this afternoon across the eastern highlands and this feature will move slowly into western Wyoming over the next few hours. Any additional snow accumulations going forward will be very light, generally an inch or less, although some of the highest terrain may get a touch more. As the low departs, upper level ridging quickly builds over the area for the weekend which will keep things dry and help us see clearing skies and more sunshine.
142 PM CST Fri Feb 9 2024 Updated Key Messages Coming Soon Through Saturday Night: Regional water vapor imagery with overlaid observations depict a departing low pressure system in southwestern Ontario and a weak frontal zone draped across central Illinois. Mostly sunny skies are treating our area with well above average temperatures in the lower 50s (northwest) to lower 60s (southeast). As a result, tomorrow looks quiet with light winds and cooler temperatures with highs in the lower 40s.