Aikyam-Lab/Synoptic-Bench huggingface dataset:
Temperatures overnight tonight will be warmer than the previous few nights, with lows hovering right around freezing area-wide. A cold front will move through the CWA around sunrise tomorrow, with blustery/sub-Wind Advisory conditions expected post-FROPA owing to modest pressure rises as the core of the upper-level low pivots over the north-central Great Plains and into the Upper Midwest region.
1049 AM EST Wed Jan 13 2021 Currently - High pressure over the Gulf of Mexico and the southeast is maintaining gentle to moderate north to northeast breezes across the Keys. Temperatures are pushing upwards through the upper 60s with dew points in the lower 60s. Meanwhile, a trough aloft is migrating eastward through the south and adjacent Gulf of Mexico. Short Term Update - The trough aloft will continue to move eastward this afternoon approaching Florida. A ridge axis extending from the Gulf of Mexico across the southeast and Florida will maintain north to northeast breezes across Keys waters. 3F -- 2 whole degrees cooler than the previous record of 63.
Current satellite imagery and surface observations suggest that freezing fog has largely dissipated across northern AL/southern TN as of this writing, with the only exception being some sporadic visibility reductions lingering in the TN River Valley of Jackson County. We also could see some patchy freezing fog once again, but think the drier air mass should limit the scope of its development. High pressure at the surface will setup just east of the area on Thursday and it should be the warmest day of the week as southerly flow and a mostly sunny sky should warm temperatures into the mid to upper 50s.
327 PM EST Wed Jan 13 2021 Weak low pressure will move across tonight.
A cold front is moving through the forecast area this morning, with gusts of 30 to 40 mph observed along the front. Dry and cooler conditions will develop on Thursday as high pressure moves overhead.
For Tonight, an upper trough will move across the Gulf Coast States into the southeast U. Potent upper low with significant DPVA will amplify troughing across the Eastern CONUS. A strong cold front will move eastward across the forecast area on Thursday night. Low-level post-frontal winds will be generally from the west as the stacked cyclone meanders across the Ohio Valley and Great Lakes. Advisory criteria snowfall may be possible across the higher elevations of the mountains and SW VA, but overall QPF is still uncertain. Temperatures will be 10 to 15 degrees below normal with the longwave troughing pattern across the Southern Appalachians.
CDG Chattanooga Airport, TN 49 29 54 37 50 / 0 0 0 20 20 Knoxville McGhee Tyson Airport, TN 42 28 53 35 47 / 0 0 0 20 30 Oak Ridge, TN 43 27 51 35 47 / 0 0 0 20 30 Tri Cities Airport, TN 45 25 51 30 45 / 0 0 0 10 50.
Speeds will increase once again around 14/15Z ahead of an approaching cold front. Some higher gusts will also be possible across our NW terminals late in the period with cirrus spilling south and increasing at all sites ahead of the cold front which is due to arrive on Thursday afternoon. Overnight lows tonight will be warmer than what we have seen over the past few days with temperatures ranging from the mid to upper 30s. A cold front is expected to move through the area on Thursday.
333 PM EST Wed Jan 13 2021 Dry weather is expected tonight and Thursday as high pressure persists to the south.
Will be looking at maybe upgrading the high wind watch early this afternoon along with maybe issuing some winter weather products for the high winds and snow expected across the eastern cwa. Changes come tonight as a cold front will slide across the area during the evening hours.
High pressure will build back into the area through the end of the work week. With areas still below freezing across the some of the colder valleys this is a good sign so we may not see any pockets of freezing drizzle which was a concern earlier but the threat is waning.
Temperatures will be hovering at or below freezing, so did introduce some patches of freezing fog. Strong low will drive a cold front to the area which will have some light precipitation ahead of it.
145 PM MST Wed Jan 13 2021 Current surface map places 983mb low over southern Saskatchewan, with cold front racing into eastern Montana.
1216 PM EST Wed Jan 13 2021 Mostly cloudy but mild with highs around 40 today and Thursday ahead of a cold front which will bring a shot of light snow to the area Thursday evening.
200 PM MST Wed Jan 13 2021 First cold front has swept through eastern Montana this afternoon generating wind gusts up to 70 mph in parts of the CWA. Second cold front will drop in more from the NNW late this evening. It will help to develop an upper trough over the Plains states tonight/tomorrow putting the area under a strong NW flow (while an upper ridge pushes into the Pac NW).
341 PM EST Wed Jan 13 2021 Light snow is possible late tonight, mainly north of Pittsburgh, with a fast moving trough.
116 PM MST Wed Jan 13 2021 Satellite and 500 mb RAP analysis showed a closed low over Mississippi with ridging along the west coast. The cold front associated with the system enters the northern portion of the region around or shortly after midnight, progressing south through the remainder of the area by sunrise.
1133 AM CST Wed Jan 13 2021 (Today and tonight) Warmer temperatures, sunny skies, and quiet weather is expected today under northwest flow aloft. Overnight lows Wednesday night will also be warmer, mainly in the low to mid 30s, with west to southwest winds between 5 and 15 mph.
254 PM EST Wed Jan 13 2021 Another rare day of January sunshine has been experienced by all across southern Indiana and central Kentucky thanks to high pressure anchored across the Gulf Coast states. Tonight, clouds will increase ahead of our next cold front. Temperatures shouldn't fall much below the freezing mark overnight as a 35-40kt LLJ develops in the 950-900mb layer and surface winds stay relatively steady to keep the boundary layer somewhat mixed. Winds will also be breezy (+20mph gusts) at times as the pressure gradient tightens ahead of the cold front. A deep and nearly stacked low pressure system digging into the Upper Midwest will push a front through the Ohio Valley on Thursday night.
1120 AM CST Wed Jan 13 2021 Precipitation chances tonight, with a strong cold front and persistent strong winds later tonight through Thursday.
In it's wake, moisture in the lower-mid levels continues to infiltrate the atmospheric column despite high pressure building into region from the Gulf of Mexico. Cooler temperatures will also be in place tomorrow with daytime highs in the upper 60s across the Lake Region to lower 70s elsewhere.
(This evening through Thursday) A deep upper low over the Upper Midwest will swing a cold front through Oklahoma and north Texas early Thursday.
1134 AM CST Wed Jan 13 2021 Current satellite imagery and surface observations suggest that freezing fog has largely dissipated across northern AL/southern TN as of this writing, with the only exception being some sporadic visibility reductions lingering in the TN River Valley of Jackson County. We also could see some patchy freezing fog once again, but think the drier air mass should limit the scope of its development. High pressure at the surface will setup just east of the area on Thursday and it should be the warmest day of the week as southerly flow and a mostly sunny sky should warm temperatures into the mid to upper 50s.
The upper low that brought wintry precipitation to parts of TX and LA is currently located over NE LA and W MS and is continuing to move eastward. This low is expected to become an open wave trough later today. Meanwhile, a low level thermal ridge on the heels of this upper low is continuing to expand across the southern plains this morning with temperatures around 6C to 9C across E OK and NW AR at the 850mb level. The main upper ridge continues across the desert southwest with a notable strong upper jet located across the pacific northwest.
1148 AM CST Wed Jan 13 2021 Our primary weather concerns begin late tonight as a strong cold front swings through bringing strong winds to the region.
Strong winds with gusts near 20 knots or so are forecast as an H500 low approaches and a cold front passes through the region. Today Through Thursday Night At the surface, high pressure was centered just south of Arkansas, with an upper level low over eastern Texas. Clouds associated with the aforementioned system will move eastward today, as the low shifts across north Louisiana. Winds will increase on Thursday, as a cold front moves into Arkansas from the plains.
142 PM EST Wed Jan 13 2021 A mid-level trough over Louisiana will continue to move eastward through the rest of the day as a frontal boundary remains south of the region. This set up will continue to bring some light showers moving over the area from the Gulf, although rainfall totals will be on the low side again.
Temperatures in the Livingston area went from the lower 50s to the upper 30s in an hour as the front moved through along with brief moderate rain. Snow continues to fall in the mountains and light precipitation will be possible over the lower elevations into this evening, especiall from Rosebud county east.
Quiet weather continues into tonight with overnight lows in the 30s, though remaining above freezing for most areas. Ridging at the surface moving eastward as the next approaching upper low dips into the Northern Plains tonight. The low will send a cold front through the area tomorrow afternoon bringing with it gusty northerly winds and colder air.
Low temperatures this morning will be slightly warmer than previously forecast due to persistent low clouds sticking around overnight. High pressure will build to the west today as an upper level trough approaches from the west and a weak surface wave approaches from the Gulf. The upper level trough and surface wave will cross the area this afternoon, bringing a chance for showers to central FL and some of our southern counties in NE FL. High pressure will shift over the area tonight, which could reduce cloud cover and allow overnight low temperatures to reach the mid-to-upper 30s for SE GA and the Suwannee Valley and lower 40s for the rest of NE FL and the coast.
An upper level trough will deepen into a closed low across Iowa, driving a cold front through the area in the morning.
Warm air advection processes through this moist layer scouring out some of the lower overcast, especially across portions of northwest lower Michigan. Otherwise, another unbelievably quiet and rather mild mid January day across the Northwoods, with current temperatures ranging through the 30s into the lower 40s. Current low amplitude troughing gives way to building mid level heights overnight, with sharp ridge axis sliding across the area Thursday ahead of rapidly deepening Plains troughing (which will bring our next widespread precipitation event beginning Thursday night.
A strong cold front will move through tomorrow morning with sustained winds of at least 15-20 knots. With the elongated nature of the trough, we'll see some impacts across west Texas as well. However, the prefrontal trough is not expected to move into our CWFA until late evening followed by the honest front before sunrise on Thursday.
253 PM CST Wed Jan 13 2021 Breezy west winds have developed across many areas today resulting in a quick warm up for most with afternoon temperatures already a good 5-10 degrees warmer than what we saw yesterday. Temperatures overnight will be warmer tonight than previous nights with lows generally ranging from the mid 30s to low 40s. A dry cold front will move through the region Thursday, with gusty north winds persisting much of the day.
Vigorous Pacific upper trough and cold front were poised to move ashore into the Northwest, accompanied by a 130+kt 250mb jet and copious moisture aloft. The regional surface analysis showed a ridge axis from ID to the Four Corners, and a trough axis from the Central Dakotas to the Southern High Plains.
Winds will turn southerly this evening as high pressure enters the Gulf. Mostly clear skies this evening will facilitate radiational cooling with lows ranging from the middle 30s in the northern ranchlands to the middle 40s in the lower RGV. Some locations in the lower RGV will reach or perhaps even exceed the 80 degree mark. A cold front then drops through the area Thursday night, dropping temperatures back down to a few degrees below seasonal averages under mostly clear skies.
1240 PM EST Wed Jan 13 2021 Dry weather will continue Wednesday and Thursday as high pressure maintains its position along the U.
A strong cold front will move through the region before daybreak on Thursday. Temperatures overnight tonight will be warmer than the previous few nights, with lows hovering right around freezing area-wide. A cold front will move through the CWA around sunrise tomorrow, with blustery/sub-Wind Advisory conditions expected post-FROPA owing to modest pressure rises as the core of the upper-level low pivots over the north-central Great Plains and into the Upper Midwest region.
A warming trend begins today as high pressure begins to set up over California. Temperatures this afternoon are around 5 to 10 degrees warmer than 24 hours ago and will top out in the mid to upper 60s across the Valley. Temperatures will continue to warm as ensembles show high pressure will continue to build over California into the weekend.
727 PM MST Wed Jan 13 2021 The high wind event will continue through tonight and into tomorrow for Northeast Montana. -Mottice First cold front has swept through eastern Montana this afternoon generating wind gusts up to 70 mph in parts of the CWA. Second cold front will drop in more from the NNW late this evening. It will help to develop an upper trough over the Plains states tonight/tomorrow putting the area under a strong NW flow (while an upper ridge pushes into the Pac NW).
251 PM PST Wed Jan 13 2021 Dry weather and foggy mornings this week as high pressure prevails.
Low level flow out of the ridge was keeping our air dry, with sunshine working to modify/warm it. Meanwhile, a strong upper level jet was pushing southeast on the back side of a northern Rockies trough. This will support development of a very large closed low slowly moving east over the Midwest by Thursday night. Moisture will be limited with cold fropa on Thursday night, but still probably enough in the low-mid levels for at least some scattered showers. We begin the period on the eastern edge of a large upper level low that lies roughly over Illinois and Wisconsin before migrating over the Great Lakes over the course of the day. This system pushes a relatively weak cold front into the area, giving us our first introduction to a long stretch of precipitation chances.
623 PM CST Wed Jan 13 2021 Key Points: -Fairly significant change in the weather is expected tomorrow as a strong cold front works through the region early on Thursday.
The high clouds lead a mid level short wave into the region from the Midwest. Mild air remains in place to start Thursday if not reinforced a bit as the broad area of Midwest low pressure produces southerly flow from the Ohio valley into Lower Michigan. Precipitation rate does increase enough for a notable wet bulb cooling influence on the thermal profile after midnight making a rain snow mix more likely especially toward the Tri Cities where the low level occlusion process has a better chance of pinching off the deeper surface based warm layer.
Another rare day of January sunshine has been experienced by all across southern Indiana and central Kentucky thanks to high pressure anchored across the Gulf Coast states. Tonight, clouds will increase ahead of our next cold front. Temperatures shouldn't fall much below the freezing mark overnight as a 35-40kt LLJ develops in the 950-900mb layer and surface winds stay relatively steady to keep the boundary layer somewhat mixed. Winds will also be breezy (+20mph gusts) at times as the pressure gradient tightens ahead of the cold front. A deep and nearly stacked low pressure system digging into the Upper Midwest will push a front through the Ohio Valley on Thursday night.
516 PM CST Wed Jan 13 2021 (This evening through Thursday) A deep upper low over the Upper Midwest will swing a cold front through Oklahoma and north Texas early Thursday.
935 PM EST Wed Jan 13 2021 Dry weather is expected tonight and Thursday as high pressure persists to the south.
/Tonight through Thursday Night/ Quiet and generally seasonable weather will continue through the short-term with a cold front on the horizon for Thursday. Before the front arrives tomorrow, expect southerly flow to prevail and result in slightly warmer temperatures than what we have observed here more recently. The aforementioned cold front will begin to move into our NW zones by late tomorrow morning into early afternoon as it continues fast progression SE across the remainder of the region. Otherwise, expect high temperatures to reach into the lower to mid 60s for highs on Thursday with most areas seeing highs reached prior to fropa. With cooler and drier air filtering south behind the front on Thursday night, look for overnight lows to range from the lower to mid 30s with prevailing W/NW winds.
A strong northwesterly jet streak will serve to deepen and upper level trough whose axis lies just east of Siouxland. Temperatures remain above freezing for the precipitation associated with the overnight cold frontal passage. The light rain could switch to a brief rain/snow mix on the back edge of this cold front near sunrise. Even though accumulations should be minimal during this timeframe (due to relatively warm ground and above freezing near ground temperatures), the combination with strong winds could cause periods of blowing and low visibility, so use extra caution if traveling.
Temperatures currently in the 20s will likely climb into the low/mid 30s as the clouds move overhead with morning lows in the low/mid 30s. Another rare day of January sunshine has been experienced by all across southern Indiana and central Kentucky thanks to high pressure anchored across the Gulf Coast states. Tonight, clouds will increase ahead of our next cold front. Temperatures shouldn't fall much below the freezing mark overnight as a 35-40kt LLJ develops in the 950-900mb layer and surface winds stay relatively steady to keep the boundary layer somewhat mixed. Winds will also be breezy (+20mph gusts) at times as the pressure gradient tightens ahead of the cold front. A deep and nearly stacked low pressure system digging into the Upper Midwest will push a front through the Ohio Valley on Thursday night.
Otherwise, we're looking at northwest flow aloft in the near term ahead of a strong trough currently digging over the Canadian Prairie Provinces. The attendant surface cyclone is quite deep at 985 mb over southern Saskatchewan. Wind speeds will be lightest over northeast MS which is the only area where temperatures are expected to fall below freezing over a significant area. While freezing fog will be possible, the potential for icing issues appears low and confined to areas south and east of Tupelo. Fog and freezing fog have been added to the forecast with only minor modifications elsewhere.
A remarkably strong cold front continues to push through the Northern Rockies today. Snow showers have developed behind the cold front. High pressure settles in over the region Thursday resulting in much quieter conditions.
406 PM MST Wed Jan 13 2021 Current surface map places 983mb low over southern Saskatchewan, with cold front racing into eastern Montana.
254 PM MST Wed Jan 13 2021 Slightly warmer across most of the region this afternoon in response to increased cloud cover ahead of an approaching trough. The Craig area reached above the freezing mark for the first time in a week with low temperatures this morning at areas such as Meeker, Gunnison and Rangely climbing some 10 degrees from what was experienced yesterday morning. The base of the aforementioned trough centered over the Northern Plains will brush northwest Colorado this evening. Previous forecast accumulations remain on track with generally 1 to 4 inches expected in the higher elevations and half an inch or less in the adjacent high valleys. Even though precipitation totals won't be overly impressive in our region with this system, we will see other impacts as the upper level gradient tightens significantly with the trough's passage.
345 PM CST Wed Jan 13 2021 Mid-afternoon sfc analysis shows high pressure centered over the sern CONUS ridging swwd over the forecast area while upstream, troffing is noted over the Plains States. Water vapor imagery shows the mid/upper-level low ejecting ewd and away from the lower Mississippi Valley with a deep/dry nrly flow now ensconced over the region. Meanwhile an amplifying trof is deepening over the nrn Rockies. Prior to that passage, expect a much warmer day tomorrow with highs throughout the 60's.
Overnight temperatures will dip down into the 40s and upper 30s but should escape any freezing concerns for the time being. This will bring our next cold front through the area Thursday afternoon/evening.
902 PM EST Wed Jan 13 2021 Light snow is possible late tonight, mainly north of Pittsburgh, with a fast moving trough.
High pressure will bring a strong warming trend and continued dry conditions through the weekend. A weather system digging down from the north is expected to result in cooler temperatures, occasional gusty winds and a chance for valley rain and mountain snow showers.
A shift to the NW is expected with the arrival of a cold front in the 16-21Z period, and gusty winds are anticipated for a few hours behind it especially at AUS and SAT. Quiet weather continues into tonight with overnight lows in the 30s, though remaining above freezing for most areas. Ridging at the surface moving eastward as the next approaching upper low dips into the Northern Plains tonight. The low will send a cold front through the area tomorrow afternoon bringing with it gusty northerly winds and colder air.
That will mean highs on the lower deserts reaching the mid 70s to low 80s.
/issued 253 PM CST Wed Jan 13 2021/ Breezy west winds have developed across many areas today resulting in a quick warm up for most with afternoon temperatures already a good 5-10 degrees warmer than what we saw yesterday. Temperatures overnight will be warmer tonight than previous nights with lows generally ranging from the mid 30s to low 40s. A dry cold front will move through the region Thursday, with gusty north winds persisting much of the day.
Biggest change is to beef up fog/freezing fog coverage as temp/dew point spreads are rather small and given lingering low level moisture conditions appear to be favorable for fog/low cloud redevelopment again tonight. For Tonight, an upper trough will move across the Gulf Coast States into the southeast U. Potent upper low with significant DPVA will amplify troughing across the Eastern CONUS. A strong cold front will move eastward across the forecast area on Thursday night. Low-level post-frontal winds will be generally from the west as the stacked cyclone meanders across the Ohio Valley and Great Lakes. Advisory criteria snowfall may be possible across the higher elevations of the mountains and SW VA, but overall QPF is still uncertain. Temperatures will be 10 to 15 degrees below normal with the longwave troughing pattern across the Southern Appalachians.
A strong cold front is expected to move through western Kansas overnight shifting winds to the north. As for temperatures, lows overnight look to dip into the 30s with highs tomorrow ranging from the low 40s across west central Kansas to around 50 degrees across south central Kansas.
Low level flow out of the ridge was keeping our air dry, with sunshine working to modify/warm it. Meanwhile, a strong upper level jet was pushing southeast on the back side of a northern Rockies trough. This will support development of a very large closed low slowly moving east over the Midwest by Thursday night. Moisture will be limited with cold fropa on Thursday night, but still probably enough in the low-mid levels for at least some scattered showers.