Aikyam-Lab/Synoptic-Bench huggingface dataset:
Surface analysis at 19z indicates the center of a low pressure ejecting from Ontario into the Great Lakes region, with an attached cold front stretching across into central Manitoba. Attached to this low ahead of the front is a very tight pressure gradient force over northeast North Dakota which is continuing to facilitate our ongoing wind. As this cold front sweeps down, snow showers may form along it.
However, the "Freezing Fog Advisory" for the Golden Triangle area was allowed to expire at 15Z, as temperatures are rising above freezing and fog there is dissipating with visibilities improving. Highs will be a touch warmer today as they range from the upper 50s north to middle 60s south. Surface ridging will continue keep conditions quiet Tuesday and Wednesday morning before a wet pattern returns.
A weak and dry cold front will continue moving south through the waters today, then high pressure fills in behind the front.
1201 PM CST Tue Jan 28 2025 -SHRA remain widespread this mid-morning across much of N LA into portions of extreme Ern TX, associated with an areas of isentropic ascent in the H850-700 lyr atop the weak sfc ridging in place over the Lower MS Valley. Given the rains and the extensive cloud cover/lack of warm advection beneath the sfc ridging, any insolation will be limited and thus have lowered max temps some 3-5 degrees across much of the region. 15 (18Z TAFS) For the 28/18Z TAF update, VFR vis/cigs will gradually deteriorate to MVFR by 29/10Z and IFR after 29/12Z as VCSH/-SHRA begin ahead of a warm frontal boundary.
1111 AM CST Tue Jan 28 2025 Updated at 1109 AM CST Tue Jan 28 2025 - Expect sunny and warmer weather today and Wednesday.
103 PM EST Tue Jan 28 2025 Dry and warmer conditions will will develop today and Wednesday ahead of a dry cold front that will move through Wednesday night.
Low pressure lingering over Arizona through Wednesday will result in scattered rain and snow showers over Mohave County today and Wednesday, with dry conditions elsewhere. Afternoon satellite imagery depicts a broad cloud shield draped across the northern Mojave Desert and extending eastward across northern Arizona, in association with a fairly deep and broad cut-off low. Light radar returns are also observed across southern Nevada as moisture wraps around the low, though surface dewpoints in the teens and even single digits has limited anything from reaching the ground outside of the highest elevations. Closer to the low, a pocket of -30C air at 500mb resides across eastern Mohave County, and scattered convective showers have begun to develop. The low will slowly move east tomorrow, on track to push into New Mexico by tomorrow evening.
An upper-level ridge is building in from the West as a cold front sinks into South Florida. Over the next few days, this will modify as the ridge continues to slide eastward, ushering in the E, then ESE, and eventually S to SSW flow by the weekend.
In addition, I've also added some rain chances to the forecast across mainly East Central Louisiana and Southwest and West Central Mississippi as a result of some weak ascent traversing the northern fringes of high pressure generally centered across Central Louisiana. With drier air east of this high, this activity looks to struggle and eventually dissipate the further east it gets toward the Interstate 55 corridor. Surface ridging will continue keep conditions quiet Tuesday and Wednesday morning before a wet pattern returns.
(Rest of Today) Freezing fog reducing visibilities to 1/4 of a mile or less continue in the valley areas of Jackson county in particular. Based on observations and satellite imagery, some areas of freezing fog are likely lingering in portions of southern Cullman county and northeastern Marshall county over portions of Lake Guntersville. Thus, have extended the Freezing Fog Advisory through 10 AM for those counties. Icy elevated roadways and bridges are possible. Conditions should improve markedly around 11 AM or maybe a tad sooner, as temperatures climb above freezing.
Due to the westerly boundary layer flow, lows tonight will vary greatly from the ridges and valleys. Dry and warmer than normal temperatures for Wednesday. Discussion: Strong westerly boundary layer flow and strengthening upper ridge over the Tennessee valley can be expected through most of the period especially tonight. Winds across the highest terrain of the far east Tennessee mountains will approach advisory criteria wind speeds. A fairly large temperature difference between the ridge and valley is expected.
The Air Stagnation Advisory continues under persistent high pressure. The ridge will slow weaken leading to this weekend as a closed low to our south moves east, allowing the blocking pattern to end. A slight warming trend as the ridge weakens will mean less confidence in colder morning lows, so a Cold Weather Advisory in Fairfield will be allowed to end after Wednesday morning. We are set to receive a lot of precipitation and ridgetop wind, with snowfall in the mountains of 10-30 inches above 4500 ft.
1130 AM CST Tue Jan 28 2025 (Rest of Today) Freezing fog reducing visibilities to 1/4 of a mile or less continue in the valley areas of Jackson county in particular. Based on observations and satellite imagery, some areas of freezing fog are likely lingering in portions of southern Cullman county and northeastern Marshall county over portions of Lake Guntersville. Thus, have extended the Freezing Fog Advisory through 10 AM for those counties. Icy elevated roadways and bridges are possible. Conditions should improve markedly around 11 AM or maybe a tad sooner, as temperatures climb above freezing.
1018 AM CST Tue Jan 28 2025 -SHRA remain widespread this mid-morning across much of N LA into portions of extreme Ern TX, associated with an areas of isentropic ascent in the H850-700 lyr atop the weak sfc ridging in place over the Lower MS Valley. Given the rains and the extensive cloud cover/lack of warm advection beneath the sfc ridging, any insolation will be limited and thus have lowered max temps some 3-5 degrees across much of the region.
311 PM EST Tue Jan 28 2025 Dry and warmer conditions will continue through Wednesday ahead of a dry cold front that will move through Wednesday night.
WV imagery indicates weak ridging aloft shifting eastward through the Southern High Plains. Near the surface, high pressure dominates the Northern/Central Rockies. Prevailing dry pattern through early Wednesday will give way to increasing light rain chances (60 to 80%) late Wednesday as the SREF continues to indicate a closed upper low in southern California/western Arizona beginning to shift slowly east this evening and moving into western New Mexico early Wednesday, allowing an increasingly difluent southwest flow aloft to develop across the Western High Plains.
Temperatures will be very warm today approaching the lower 40s. This will lift to the northeast later today and into Wednesday as a thermal ridge brings very warm 850mb temps (up to 7C) into the Northern Plains and Upper Midwest.
Updated at 1117 AM CST Tue Jan 28 2025 - Sunny and warmer weather today and Wednesday.
Patchy fog developing tonight may impact some localities, mainly along the Highway 84 corridor. /16 (Now through Wednesday night) A building upper ridge over the Lower Mississippi River Valley and Southeast will cause temperatures to rise back to well above seasonal norms.
1020 AM EST Tue Jan 28 2025 A sharp arctic cold front has crossed through northern New York and Vermont. A narrow ridge axis crests over the North Country by afternoon, yielding diminishing wind speeds.
1056 AM PST Tue Jan 28 2025 Upper level ridging, in the omega block fashion, is forecast through mid to late week.
In addition, I've also added some rain chances to the forecast across mainly East Central Louisiana and Southwest and West Central Mississippi as a result of some weak ascent traversing the northern fringes of high pressure generally centered across Central Louisiana. With drier air east of this high, this activity looks to struggle and eventually dissipate the further east it gets toward the Interstate 55 corridor. However, the "Freezing Fog Advisory" for the Golden Triangle area was allowed to expire at 15Z, as temperatures are rising above freezing and fog there is dissipating with visibilities improving. Highs will be a touch warmer today as they range from the upper 50s north to middle 60s south. Surface ridging will continue keep conditions quiet Tuesday and Wednesday morning before a wet pattern returns.
1217 PM EST Tue Jan 28 2025 On the heels of a cold frontal passage, weak surface ridging builds in this evening. A clipper low moves through the area late tonight through Wednesday, dragging another cold front through the area.
We will continue with high pressure holding on across the state.
A slow moving upper level low will continue to bring precipitation to portions of southern Utah through tomorrow.
957 PM EST Tue Jan 28 2025 Dry and warmer conditions will continue through Wednesday ahead of a dry cold front that will move through Wednesday night.
628 PM EST Tue Jan 28 2025 Dry and warmer conditions will continue through Wednesday ahead of a dry cold front that will move through Wednesday night.
(Tonight) High pressure will remain in control of weather over much of the southeastern CONUS tonight, but shift southward.
806 PM CST Tue Jan 28 2025 Updated at 803 PM CST Tue Jan 28 2025 - Sunny and warmer weather today and Wednesday.
531 PM CST Tue Jan 28 2025 Updated at 523 PM CST Tue Jan 28 2025 - Sunny and warmer weather today and Wednesday.
Upper ridging will continue to build eastward on Wednesday while high pressure will be in place at the surface. Temperatures will continue a substantial warming trend courtesy of the aforementioned ridging. Low temperatures Wednesday morning will remain above freezing for the vast majority of the area other than a few spots in the mountain counties. Most locales in north Georgia (outside of the mountains) will reach the low-to-mid 60s, and some spots in Middle Georgia could even touch 70 degrees.
An upper level ridge remains over northern California and southern Oregon today, supporting continuing mild weather. Overnight lows will still be in the mid 30s for coastal areas south of Cape Blanco, in the low 30s north of Cape Blanco and in the Umpqua Valley, and below freezing in other areas. A Freeze Warning will be in place in the early morning hours on Wednesday for coastal areas north of Cape Blanco, given those continuing freezing conditions.
A cold front has slowly pushed its way south down the peninsula today, although there has been very little sensible weather with the exception of some increased mainly high cloudiness and a wind shift to the northwest. High pressure will hold over west central and southwest Florida on Wednesday with partly cloudy skies and high temperatures in the 70s. An upper-level ridge is building in from the West as a cold front sinks into South Florida. Over the next few days, this will modify as the ridge continues to slide eastward, ushering in the E, then ESE, and eventually S to SSW flow by the weekend.
- Quite and slightly cooler with less wind Wednesday.
1123 PM CST Tue Jan 28 2025 - Snow squalls are possible this afternoon and evening as a cold front moves through. Low pressure was analyzed between Grand Portage and Thunder Bay early this afternoon with a cold front stretching to the northwest along the International Border into southern Manitoba. With these likely occurring after sunset, road temperatures will be falling below freezing which could allow the snow to accumulate very quickly on road surfaces.
Pattern/synopsis: Secondary cold front is exiting into central and southern lower MI. Forecast: Snow showers along that slow-moving secondary front packed a considerable punch (at least over the high terrain), with a period of 1-2"/hr accums. With cold advection today, our max temps have already occurred, and temps will stabilize today in the lower teens to mid 20s. Pattern Synopsis/Forecast: At the start of the period, weak high pressure scoots in from the southwest.
Updated at 202 AM CST Wed Jan 29 2025 - Sunny and warmer today.
A deep upper low is situated over AZ with upper riding over the Southern Plains. Thin cirrus is spilling over the ridge into the southwest parts of the Mid-South while skies are mostly clear toward the TN River.
A few ticks warmer with mostly sunny skies and dry weather today. With the upper low still comfortably to our west (Four Corners), we're under a gentle regional weather pattern. We do get to increment a couple more degrees warmer, so the late January thaw is in full swing now.
1254 AM EST Wed Jan 29 2025 Dry and warmer conditions will continue through Wednesday ahead of a dry cold front that will move through Wednesday night.
A weak cold front is currently sitting just north of Tampa Bay. The already weak front will start to wash out throughout the day on Wednesday with very similiar weather conditions to what we saw yesterday with sunny skies and highs in the low to mid 70's.
107 AM EST Wed Jan 29 2025 A dry cold front will move through the region later today and tonight.
Temperatures along the Island Chain are in the lower to mid 60s with dew points in the lower 60s. Weak high pressure remains centered over southeastern Louisiana with this ridge extending southeastward across the Gulf and into the Florida Keys. From synopsis, weak high pressure over the Mississippi Delta will push a decaying frontal boundary towards the Keys overnight before the boundary dissipates. As this high tracks further eastward through the second half of the week, breezes will veer east to southeasterly and slowly strengthen.
1037 PM CST Tue Jan 28 2025 Updated at 1034 PM CST Tue Jan 28 2025 - Sunny and warmer weather today and Wednesday.
High pressure aloft and dry air at the surface will support continuing VFR levels under clear skies.
It has been another peaceful evening along the Florida Keys! Temperatures over the past couple of hours have been in the lower to mid 60s with dewpoints just a few degrees below the air temperature. Here at home, another day of unremarkable weather is on deck as high pressure remains dominant over the area. As we head into the end of the week, breezes will increase ever so slightly, and will turn east to southeastward as the center of the high pressure pushes offshore and over the Atlantic.
(Today through Thursday) Currently surface ridging is in place across the Deep South and into the NRN Gulf. This ridging will slowly nudge NE then EWD on Thu in advance of warm front that will push NEWD across AL on Thu. Also in the lower levels, increased moisture/low stratus to our W in MS will advance EWD into the WRN counties.
- High pressure returns later this week with warming temperatures area wide. Satellite imagery early this morning shows a closed low centered near the California/Arizona border advecting mositure into the Four Corners region. As the low track east throughout the day, pockets of positive vorticity advection and upslope flow combine to provide forcing for this moist airmass resulting in moderate to heavy snow showers across southeast Utah and southwest Colorado. Driving conditions will improve throughout the day as the low pressure system exits to the east. A transitory ridge forms over the region Thursday night in the wake of the southern storm impacting the area today into Thursday.
Under the continued influence of high pressure over SE Idaho, strong inversions will remain in place, supporting quiet and dry conditions with patchy areas of low stratus and fog during the overnight and early morning hours. Temperatures will continue to see a gradual warming trend into Thursday as a H5 ridge axis of high pressure over the NE Pacific shifts east to being over the NRN Rockies with cold mornings followed by highs each afternoon in the 20s/30s/40s.
Rain showers will start to move into the region tonight ahead of a low pressure system.
326 AM PST Wed Jan 29 2025 High pressure will dominate the region leading to chilly mornings and mild days through Thursday.
There is a 55 to 90 percent chance for freezing morning low temperatures Wednesday across the San Joaquin Valley, with a 40 to 75 percent chance Thursday. The trough that brought snow to the Grapevine and rain to the Valley is still over Southern California and western Arizona while a ridge is still trying to develop off the coast. Ensembles agree strongly that this trough will slowly but surely slide east today into tomorrow allowing the ridge to build in bringing stabler conditions and a slight warming trend. However, the Freeze Warning remains in effect as there is still a 40 to 75 percent chance of freezing temperatures Thursday morning in the Valley.
609 AM EST Wed Jan 29 2025 (Today through Thursday) High pressure over South Florida will slowly drift east into the Western Atlantic Waters, as a mid to upper level trough moves from the Western United States into the Central United States.
526 AM CST Wed Jan 29 2025 Updated at 524 AM CST Wed Jan 29 2025 - Sunny and warmer today.
(Now through Thursday) Upper ridging continues to build in across the area through Thursday. A cutoff upper low over the southwestern U. Temperatures top out in the upper 60's to near 70 today, with Thursday being warmer in the lower to middle 70's over most of the area.
High pressure will dominate the region leading to chilly mornings and mild days through Thursday.
435 AM CST Wed Jan 29 2025 Today and Tonight: A cutoff low pressure system over the Desert Southwest will deepen as it wobbles toward the Central High Plains today and tonight and strengthens warm, moist advection across our region.
/NF/ Today and Tonight: A cutoff low pressure system over the Desert Southwest will deepen as it wobbles toward the Central High Plains today and tonight and strengthens warm, moist advection across our region.
620 AM CST Wed Jan 29 2025 (Today through Thursday) Currently surface ridging is in place across the Deep South and into the NRN Gulf. This ridging will slowly nudge NE then EWD on Thu in advance of warm front that will push NEWD across AL on Thu. Also in the lower levels, increased moisture/low stratus to our W in MS will advance EWD into the WRN counties.
Areas near the mountains, east of I-75 and I-81 from Blount up through Greene counties this morning were quite a bit warmer than areas to the west of those interstates due to winds remaining elevated during the overnight hours. A few ticks warmer with mostly sunny skies and dry weather today. With the upper low still comfortably to our west (Four Corners), we're under a gentle regional weather pattern. We do get to increment a couple more degrees warmer, so the late January thaw is in full swing now.
Most of the snowfall associated with this system will occur along the warm front, while the cold front remains north of the International Border. Following the passage of the warm front, temperatures will rise well above normal on Thursday, reaching the 30s and lower 40s.
Overall warmer temperatures, light winds, efficient radiation cooling at night, and upper 50s to low 60s dewpoints that continue to increase over the next couple days to the mid 60s will drive this potential. A weak cold front is currently sitting just north of Tampa Bay. The already weak front will start to wash out throughout the day on Wednesday with very similiar weather conditions to what we saw yesterday with sunny skies and highs in the low to mid 70's.
A deepening low pressure system in the southwest U.
647 AM EST Wed Jan 29 2025 A weak cold front is currently sitting just north of Tampa Bay. The already weak front will start to wash out throughout the day on Wednesday with very similiar weather conditions to what we saw yesterday with sunny skies and highs in the low to mid 70's.
1214 PM EST Wed Jan 29 2025 (This afternoon through Thursday) The synoptic scale pattern is characterized by longwave ridging over central CONUS, and a low-amplitude longwave trough along the eastern seaboard. A broad ridge of high pressure continues to expand within the boundary layer, which will be the dominate influence on sensible weather through the short term period. This high pressure and diminishing of pressure gradient force will keep light and (sometimes) variable winds over the CWFA through today and tomorrow. Overnight low temperatures will be mild, ranging from the low/mid 50s across interior and southwest Florida, to the low 60s along the immediate east coast.
Both high pressure at the surface and ridging aloft remain in control of our weather. Skies will remain partly cloudy to cloudy, with highs ranging from the lower 60s north to lower 70s south. /19/ Today and Tonight: A cutoff low pressure system over the Desert Southwest will deepen as it wobbles toward the Central High Plains today and tonight and strengthens warm, moist advection across our region.
While low level warm/moisture advection will continue today N of a Nwd moving warm front extending from the TX Hill Country to the Middle TX Coast, areas to the N where the convection will become more numerous from NE TX/SE OK/SW AR/extreme NW LA should see only a minimal warmup today, maintaining temps in the 50s. Milder temps should be observed farther S where warm advection will be more pronounced away from the convection/just N of the developing warm front.
(Through Thursday) Showers are ongoing across portions of eastern Oklahoma and into western Arkansas early this afternoon, well in advance of the impressive upper level low positioned across the desert southwest. Through the evening hours, expect a northeastward expansion in the coverage and intensity of heavy rainfall and thunderstorms, as the low level jet strengthens into southeast Oklahoma and western Arkansas. While precipitable water values are high currently, the increase in the low level jet will lead to a further moisture increase after midnight tonight, when the heaviest rainfall is expected. (Thursday Night through Wednesday) Wraparound precipitation and cloud cover are likely across northeast Oklahoma Thursday evening as the upper low moves through the region, with temperatures supporting liquid.
1150 AM CST Wed Jan 29 2025 Updated at 1144 AM CST Wed Jan 29 2025 - Sunny and warmer today.
(This afternoon through Thursday) The synoptic scale pattern is characterized by longwave ridging over central CONUS, and a low-amplitude longwave trough along the eastern seaboard. A broad ridge of high pressure continues to expand within the boundary layer, which will be the dominate influence on sensible weather through the short term period. This high pressure and diminishing of pressure gradient force will keep light and (sometimes) variable winds over the CWFA through today and tomorrow. Overnight low temperatures will be mild, ranging from the low/mid 50s across interior and southwest Florida, to the low 60s along the immediate east coast.
- Low chance of showers and thunderstorms ahead of a weak cold front on Thursday. A mid/upper level closed low over New Mexico will slowly push toward the Southern High Plains through the short term. As this low pressure and its associated fronts near the BRO CWA today, it will nudge the stationary front northward. On Thursday, a weak cold front will pass and should be offshore by sunset. The continental tropical cT airmass behind this cold front allows for minimal temperature change following fropa, but will bring drier conditions with decreased dew points and clearing skies.
From synopsis, high pressure will continue to track eastward through our area today, allowing for light to gentle northeast breezes to continue. As this high tracks further eastward over the Atlantic through the second half of the week, breezes will veer east to southeasterly and slowly strengthen by Thursday night.