Aikyam-Lab/Synoptic-Bench huggingface dataset:
514 PM CST Mon Dec 30 2019 Light snow continues to diminish across the area this afternoon as the upper level low which has been affecting the region over the past few days finally pulls away. By late evening could see a little more light snow develop across southwestern MN as another weak impulse swings around the departing upper low, though any accumulation should generally be a half an inch or less. Winds finally diminish on Tuesday in a weakening gradient as low pressure moves away. In spite of more sunshine, it will be another cold day with highs in the lower to mid 20s.
Trended towards the higher wind speed outputs and looked at bufkit soundings, wind speeds from the surface up to 850 mb were up to 50 kts through this afternoon and evening. As for temperatures tonight, trended towards the cooler models for lows to account for snowpack.
The upper level low is now over southern Wisconsin. The upper level low will begin to move out and the clouds will as well, but slowly, especially over the northeast sections which may not see clearing until later on Tuesday. and another upper level low off of Baja CA.
Tonight and Tomorrow: With the upper trough shifting eastward over the Great Lakes, the upper level flow over our CWA is becoming more zonal-oriented. High pressure will continue to ease into our area over the next day or so, which in turn will keep our weather quiet and seasonal. Going into tonight, temperatures will drop into the 30s with some isolated spots hitting freezing along and just east of I-55.
/issued 229 PM CST Mon Dec 30 2019/ Visible satellite shows a deep upper low circulating over the Midwest this afternoon, leaving a massive swath of snow in its wake.
A low pressure system off the southern California coast will dive south to central Baja through early Tuesday. Temperatures will remain below normal through mid week then warm heading into the weekend as strong high pressure builds over the eastern Pacific. As forecast, north winds have increased within the lower Colorado River Valley from Lake Mohave south through the Mohave Valley. Otherwise, upper low will continue to sling mid/high clouds back across mainly San Bernardino and southern Mohave Counties tonight as the closed low sinks south toward the Baja spur.
Southerly winds at 850mb will increase moisture ahead of an upper level low over Baja. Expect cloud clover to increase overnight and continue through Tuesday and highs will be slightly cooler on Tuesday in the low 60s. Rain chances will increase on Tuesday night to 30 to 50% as a coastal trough sets up near the Middle Texas Coast.
241 PM MST Mon Dec 30 2019 Subsident flow is over Colorado between a large trough over the Great Lakes and another trough off the west coast of Southern California. Quiet weather will continue this evening through Tuesday as a ridge over the Pacific Northwest nears our area.
606 PM EST Mon Dec 30 2019 A cold front will move offshore tonight.
Weakening cold front will move into our northern counties (N of I-4) late this evening and continue tracking southeastward through the night across the remainder of ECFL. Cooler and drier air will filter down the peninsula behind this boundary. Cooler than previous nights (late) as lows fall into the mid to upper 50s from Osceola/northern Brevard northward, with low to mid 60s farther south. Otherwise, it will be dry and cooler tomorrow with highs in the mid to upper 60s near to north of Orlando and in the low to mid 70s farther south. A weak cold front will pass southward late tonight into early Tue morning across the area. SWRLY winds 5-10 kts near shore and 8-13 kts offshore will continue to veer to W/NW as a weak cold front approaches and passes across the waters late tonight into early Tue morning.
550 PM CST Mon Dec 30 2019 The wrapped up system that brought freezing rain, rain, and snow across the region will slowly start to meander eastward.
330 PM MST Mon Dec 30 2019 Current surface analysis shows strong low pressure moving quickly east across the Great Lakes region. Upper level analysis shows low over Lake Michigan, with positively tilted ridge from the west coast into the northern Rockies. New Years Day will be relatively mild ahead of the next cold front and clipper system, with highs mostly in the mid 30s to upper 40s.
Although models are not capturing this thin cloud layer, feeling is that ceilings should gradually lower, but remain VFR through most of New Years Eve as dry NE winds occupy the lower levels. Southerly winds at 850mb will increase moisture ahead of an upper level low over Baja. Expect cloud clover to increase overnight and continue through Tuesday and highs will be slightly cooler on Tuesday in the low 60s. Rain chances will increase on Tuesday night to 30 to 50% as a coastal trough sets up near the Middle Texas Coast.
Temperatures are expected to bottom out in the low to mid 30s tonight.
Water vapor shows the low that brought rain and light snow to the area yesterday is now located off the coast of Baja California and is expected to continue to dig southeast across Mexico through mid- week. In northern California, clear skies and breezy winds are seen in the wake of this system this afternoon as ridging begins to overtake the area.
543 PM EST Mon Dec 30 2019 Dry and cool high pressure will build across the region through tonight in the wake of the cold front that pushed offshore.
/issued 308 PM CST Mon Dec 30 2019/ Yesterdays cold front only managed to bring temperatures closer to normal. Highs this afternoon are mostly in the low 50s under clear skies. Brisk north wind makes if feel slightly cooler.
827 PM CST Mon Dec 30 2019 Wrap around clouds associated with an upper level low pressure system that is tracking through the Great Lakes are skirting areas north of a Paragould, Arkansas to Jackson, Tennessee line. Lows will drop down into the lower to mid 30s. /issued 308 PM CST Mon Dec 30 2019/ Yesterdays cold front only managed to bring temperatures closer to normal. Highs this afternoon are mostly in the low 50s under clear skies. Brisk north wind makes if feel slightly cooler.
No major issues for this period as high pressure moves into and then settles over SE TX. Plenty of sun tomorrow with highs in the lower 60s.
Subsident flow is over Colorado between a large trough over the Great Lakes and another trough off the west coast of Southern California. Quiet weather will continue this evening through Tuesday as a ridge over the Pacific Northwest nears our area.
347 PM CST Mon Dec 30 2019 Light snow continues to diminish across the area this afternoon as the upper level low which has been affecting the region over the past few days finally pulls away. By late evening could see a little more light snow develop across southwestern MN as another weak impulse swings around the departing upper low, though any accumulation should generally be a half an inch or less. Winds finally diminish on Tuesday in a weakening gradient as low pressure moves away. In spite of more sunshine, it will be another cold day with highs in the lower to mid 20s.
308 PM CST Mon Dec 30 2019 Yesterdays cold front cold front only managed to bring temperatures closer to normal. Highs this afternoon are mostly in the low 50s under clear skies. Brisk north wind makes if feel slightly cooler.
306 PM CST Mon Dec 30 2019 Main focus in of the short term will be the warmer air aloft moving in, with a southwest fetch.
641 PM EST Mon Dec 30 2019 The cold front continues to make its way through the Florida peninsula tonight, with just a few stray showers remaining across the local area. High pressure will build in behind it tonight into Tuesday, with a cooler and drier day expected. Mainly VFR conditions are expected, though MVFR cigs will be possible overnight ahead of the cold front. The cold front will move south through the waters tonight with the south to southwest winds ahead of it shifting to the northwest and north in its wake and continuing through Tuesday night.
With high pressure over the region tonight, expect clear skies to continue with temperatures dropping down into the mid-30s. With high pressure in place, the atmosphere will decouple somewhat overnight, allowing winds to weaken to 5 to 10 mph. Zonal flow aloft coupled with a high pressure system near the surface will continue to mean westerly winds. A cooler start on Tuesday will mean temperatures only get up into the upper 40s to near 50 on Tuesday.
Main focus in of the short term will be the warmer air aloft moving in, with a southwest fetch.
A forecast update is in place for warmer lows tonight across ncntl Nebraska. Trended towards the higher wind speed outputs and looked at bufkit soundings, wind speeds from the surface up to 850 mb were up to 50 kts through this afternoon and evening. As for temperatures tonight, trended towards the cooler models for lows to account for snowpack.
Current surface analysis shows strong low pressure moving quickly east across the Great Lakes region. Upper level analysis shows low over Lake Michigan, with positively tilted ridge from the west coast into the northern Rockies. New Years Day will be relatively mild ahead of the next cold front and clipper system, with highs mostly in the mid 30s to upper 40s.
243 AM CST Tue Dec 31 2019 Deep low pressure system was tracking through eastern Upper Michigan early this morning with radar showing snow over our area on a rapid diminishing trend. Plenty of cloud and brisk northwest winds behind the departing low this morning, but skies/winds are expected to gradually clear out/subside by this afternoon as high pressure builds in. Looks like a quiet night weather-wise for New Year's Eve as high pressure drifts overhead.
220 AM EST Tue Dec 31 2019 Gusty winds and a period of accumulating snow will create difficult travel this morning as an upper level trough moves through.
325 AM EST Tue Dec 31 2019 Snow showers are expected today with a crossing trough of low pressure.
A low pressure system off the southern California coast will dive south to central Baja through early Tuesday. Temperatures will remain below normal through mid week then warm heading into the weekend as strong high pressure builds over the eastern Pacific. High clouds continue to hang around on the northern periphery of low pressure currently off the Baja coastline. As forecast, north winds have increased within the lower Colorado River Valley from Lake Mohave south through the Mohave Valley. Otherwise, upper low will continue to sling mid/high clouds back across mainly San Bernardino and southern Mohave Counties tonight as the closed low sinks south toward the Baja spur.
Currently, it is mostly cloudy across central KY and south-central IN, courtesy of a large low pressure area at the surface and aloft across the Great Lakes.
1025 PM CST Mon Dec 30 2019 Light snow continues to diminish across the area this afternoon as the upper level low which has been affecting the region over the past few days finally pulls away. By late evening could see a little more light snow develop across southwestern MN as another weak impulse swings around the departing upper low, though any accumulation should generally be a half an inch or less. Winds finally diminish on Tuesday in a weakening gradient as low pressure moves away. In spite of more sunshine, it will be another cold day with highs in the lower to mid 20s.
308 AM EST Tue Dec 31 2019 Dry high pressure building into the forecast area from the west will bring breezy conditions today.
109 AM EST Tue Dec 31 2019 MVFR cigs along with some IFR/LIFR vsbys will continue to impact KSRQ, KPGD, KFMY, and KRSW terminals through 11Z as a cold front moves south through the region. /issued 641 PM EST Mon Dec 30 2019/ The cold front continues to make its way through the Florida peninsula tonight, with just a few stray showers remaining across the local area. High pressure will build in behind it tonight into Tuesday, with a cooler and drier day expected. The cold front will move south through the waters tonight with the south to southwest winds ahead of it shifting to the northwest and north in its wake and continuing through Tuesday night.
330 AM EST Tue Dec 31 2019 Quiet fcst on tap with dry and mostly clear ridge dominated regime.
1117 PM CST Mon Dec 30 2019 Bands of snow continue to pivot across the area in association with a mid-level moisture plume/deformation/trowal wrapping around a broad upper low. Still appears the highest snowfall totals will be found across west-central into north-central WI (6 to 9 inches), although some of the high res models have suggested some of the higher amounts into the MS River counties of southeast MN.
/issued 827 PM CST Mon Dec 30 2019/ Wrap around clouds associated with an upper level low pressure system that is tracking through the Great Lakes are skirting areas north of a Paragould, Arkansas to Jackson, Tennessee line. Lows will drop down into the lower to mid 30s. /issued 308 PM CST Mon Dec 30 2019/ Yesterdays cold front only managed to bring temperatures closer to normal. Highs this afternoon are mostly in the low 50s under clear skies. Brisk north wind makes if feel slightly cooler.
/DL/ Expect clear skies tonight as high pressure continues moving into the region. Lows tonight will be in the low to mid 30s. /27/ Prior discussion below: Tonight and Tomorrow: With the upper trough shifting eastward over the Great Lakes, the upper level flow over our CWA is becoming more zonal-oriented. High pressure will continue to ease into our area over the next day or so, which in turn will keep our weather quiet and seasonal. Going into tonight, temperatures will drop into the 30s with some isolated spots hitting freezing along and just east of I-55.
As cooler air aloft builds into NE TN, cigs at TRI are expected to lower to MVFR for a few hours in the morning.
251 AM CST Tue Dec 31 2019 A stratus/stratocumulus deck associated with a vertically stacked low pressure system over the Great Lakes region will gradually clear to the northeast this morning, leaving clear skies for the remainder of the day for all but the central Missouri portion of our area. High temperatures will be near seasonal norms in the low to mid 40s. Tuesday night lows in the mid to upper 20s and wind chills in the low 20s will provide a chilly welcome to the new decade for those of us who stay up late enough to celebrate the occasion.
1042 PM EST Mon Dec 30 2019 Currently - The Keys are near a pressure col due to an Atlantic high to our east, another high spreading across the Gulf of Mexico, and a prefrontal trough to our north. A cold front is slowly pressing southeastward into southeastern Gulf of Mexico. Short Term Update - The cold front will continue to limp southeastwards towards the Keys through the overnight period. A cold front will continue to spread towards Keys waters through the overnight and will be able to penetrate into our deep gulf zones.
A tranquil pattern will continue today and tonight as a westerly flow aloft prevails across the Western High Plains while a westerly downslope flow in the lower levels reinforces a very dry air mass throughout western Kansas. A gradual warming trend will continue today as slightly warmer air continues to spread across the region.
Dry air in the low levels will keep higher ceilings from dropping very much through the day, but by late Tue evening there may be some MVFR decks unfolding near LRD well in advance of some light rain. Southerly winds at 850mb will increase moisture ahead of an upper level low over Baja. Expect cloud clover to increase overnight and continue through Tuesday and highs will be slightly cooler on Tuesday in the low 60s. Rain chances will increase on Tuesday night to 30 to 50% as a coastal trough sets up near the Middle Texas Coast.
1135 PM CST Mon Dec 30 2019 VFR conditions will prevail at all of the terminals through the entire forecast period as a dry and stable high pressure system settles over the region.
Expect clear skies tonight as high pressure continues moving into the region. Lows tonight will be in the low to mid 30s. /27/ Prior discussion below: Tonight and Tomorrow: With the upper trough shifting eastward over the Great Lakes, the upper level flow over our CWA is becoming more zonal-oriented. High pressure will continue to ease into our area over the next day or so, which in turn will keep our weather quiet and seasonal. Going into tonight, temperatures will drop into the 30s with some isolated spots hitting freezing along and just east of I-55.
359 AM EST Tue Dec 31 2019 Current surface analysis across the region features an upper level low pressure center over the Great Lakes creating cyclonic flow into the OH Valley at least for the next 24 hours. High pressure centered to the southern Plains will present a ridge axis nudging into the Appalachian Range. Any breaks in cloud cover will cause the highs today to overachieve and this will need monitored, especially with the ridge axis nosing into the general area. The mentioned ridge will keep a passing trough rotating around the parent low north of the OH River.
1109 PM CST Mon Dec 30 2019 The wrapped up system that brought freezing rain, rain, and snow across the region will slowly start to meander eastward.
However, the gradient should weaken a bit more over these areas overnight such that radiational cooling should allow for min temps to fall to near/below freezing areawide.
As of 09Z on this last day of the decade, the impressive mid- latitude cyclone continues to progress eastward across the Great Lakes region. At the surface, cyclonic flow remains across the forecast area in association with the Great Lakes cyclone.
A deep upper level low west of the Baja will continue to move east today and as it does so, deep southerly flow will commence in the lower levels of the atmosphere. It may take awhile for the precipitation to reach the ground as the lowest levels of the atmosphere are expected to be rather dry, but a decent coverage of activity is depicted on latest high-res models runs.
These clouds are being brought northeast across our area from an upper level low off the Baja California coast. Highs today are expected to be a few degrees warmer than yesterday despite the increase in high clouds. On Wednesday, an upper level short wave trough will approach the Panhandles from the northwest.
Overview: Decreasing clouds and winds today with mostly clear skies for New Year's Eve and warmer temperatures for New Year's day.
High temperatures today are forecast to range in the upper 50s to lower 60s, while lows tonight will range in the mid to upper 30s over much of the region, except in the lower to mid 40s near the beaches.
943 AM EST Tue Dec 31 2019 Snow showers mixing with rain at times are expected today with a crossing trough of low pressure.
This will allow for temps to be a degree or two warmer than yesterday. The upper low just off the coast of Baja is still expected to phase with the main upper flow across the northern half of the US later today into tomorrow. As it phases it will pull an upper trough southward across the region and aid to develop a lee trough that will help to make conditions breezy tomorrow.
922 AM EST Tue Dec 31 2019 It will be a cooler and dry end to 2019 across the area today behind the cold front. With these clouds moving in and northerly flow behind the cold front, will keep max temps just slighly below GFS MOS guidance, with highs forecast in the mid to upper 60s from the Orlando area northward and low to mid 70s farther south. (previous discussion) Northwest to north moderate breeze forecast for today across the east central FL waters as a cold front exits the Treasure Coast waters early this morning. A ridge will build across the peninsula this afternoon and tonight, decreasing winds.
Water vapor loop indicated an upper level low pressure system over Upper Michigan. Also an upper level ridge was located over the Pacific Northwest with an upper jet on the north periphery. Upper ridge will continue to move east and flatten. GEFS ensemble ptype gives the potential for freezing rain. Chance for light mixed precipitation Wed night as low pressure moves east to near the Manitoba/North Dakota/Minnesota border by 06z Thu. Enough warm air aloft with temps near or just above 0C for a time at 850/925 will give the risk of light freezing rain south of the low track thru far northeastern ND and far NW Minnesota. NAM is cooler than GFS but WPC is indicating some risk of light freezing precip its is winter products Wed night.
538 AM EST Tue Dec 31 2019 Snow and rain showers are expected today with a crossing trough of low pressure.
If (and it's a big if) any precipitation, associated with an area of low pressure stream over the Dakotas on Wednesday, can reach the ground, it could be in liquid form, either very light rain or very light freezing rain depending on the surface temperature. An associated warm front will move through the region during that time, with a cold front to quickly follow. Thermal ridge will be short lived, but will keep lows rather mild Wednesday night thanks to mixing as well.
There may be some freezing fog around this morning to start the final day of the decade.
335 AM CST Tue Dec 31 2019 As of 09Z on this last day of the decade, the impressive mid- latitude cyclone continues to progress eastward across the Great Lakes region. At the surface, cyclonic flow remains across the forecast area in association with the Great Lakes cyclone.
629 AM EST Tue Dec 31 2019 Dry high pressure building into the forecast area from the west will bring breezy conditions today. The high will be in the region with less wind Wednesday.
528 AM CST Tue Dec 31 2019 Deep low pressure system was tracking through eastern Upper Michigan early this morning with radar showing snow over our area on a rapid diminishing trend. Plenty of cloud and brisk northwest winds behind the departing low this morning, but skies/winds are expected to gradually clear out/subside by this afternoon as high pressure builds in. Looks like a quiet night weather-wise for New Year's Eve as high pressure drifts overhead. The first day of 2020/Wednesday looks to be relatively mild as warm air advection takes place ahead of low pressure tracking across the Canadian/US border. The area will see a small chance for some light rain or a rain/snow mix as a cold front slides through.
Forecasting toward the cooler MAV Guidance compared to MET, and a bit cooler than MAV over deeper snow cover in our far west/northwest.
Aloft the Mid-South will continue to have zonal flow until late on New Year's Day when a high amplitude trough moves out of the Rockies and into the plains.
455 AM CST Tue Dec 31 2019 A stratus/stratocumulus deck associated with a vertically stacked low pressure system over the Great Lakes region will gradually clear to the northeast this morning, leaving clear skies for the remainder of the day for all but the central Missouri portion of our area. High temperatures will be near seasonal norms in the low to mid 40s. Tuesday night lows in the mid to upper 20s and wind chills in the low 20s will provide a chilly welcome to the new decade for those of us who stay up late enough to celebrate the occasion. Mother Nature quickly changes her mind by Wednesday afternoon as a high pressure center sliding over the Gulf Coast will bring breezy southerly winds back into southeast Kansas and the Missouri Ozarks and warmer highs in the 50s tag along.
/Issued 330 AM EST Tue Dec 31 2019/ Quiet fcst on tap with dry and mostly clear ridge dominated regime. Under zonal flow aloft, temps should be close to near climo norms with most locations having highs in the 50s and lows in the low to mid 30s.
Despite the warmer than expected start, highs today are expected to remain in the 40s for most locations as CAA continues to bring colder air into the area.
Jet will dig a trof into the central CONUS through the end of the week. Thermal profiles suggest a mix of precipitation with the warmer Pacific airmass over the region. Precipitation chances continue into the end of the week, with temperatures steadily dropping as the trof digs to the east. Ridge builds to the west, but will be pushed east and flattened by a Pacific trof over the weekend.