Aikyam-Lab/Synoptic-Bench huggingface dataset:
High pressure is located across south central Canada. Upper level analysis continues to show upper low over the Hudson Bay region, with large scale trough over the central and eastern US and ridge off the west coast. Boundary will begin to move east as a warm front tonight, with temps starting to rise in most areas late tonight. Breezy west to northwest winds will develop behind the warm front.
520 AM EST Tue Jan 25 2022 An upper level trough is expected to remain over the eastern U.
Canadian high pressure shifts south onto the northern Plains today, keeping persistent northwesterly surface flow across the upper Midwest into central Illinois.
Light snow or freezing drizzle is also possible towards 12Z at all TAF sites. This region will slowly moisten from 06-12Z but a general lack of saturation would suggest mostly freezing drizzle across much of the region prior to saturation. Have therefore reduced PoPs over southern and eastern portions of the CWA from 12z-18z Wednesday in tandem with surrounding offices; however, a narrow saturated layer centered near 800-850mb will result in the continuation of patchy freezing drizzle across much of the area during the morning. Residual low level moisture may result in additional flurries or patchy freezing drizzle Wednesday evening for locations east of the Caprock Escarpment.
A cold front is bringing colder, drier air to the Mid State this morning. Despite the return of a mostly sunny sky on Wednesday, temperatures are expected to top out in the low to mid 30s.
512 AM CST Tue Jan 25 2022 (Today) Expect a much cooler and breezier day today behind the overnight cold frontal passage, especially across the northern two-thirds of the forecast area. Given the fire activity we saw in parts of eastern Oklahoma yesterday and the continued lack of notable precipitation, the lower moisture behind the front and gusty northerly winds could lead to a localized uptick in the rapid fire spread, especially west of Highway 75.
(Today and tonight) Colder air will continue to move into Oklahoma today with the ridge of the air mass remaining in Oklahoma into Wednesday. As this upper trough moves slowly toward central NM by sunrise Wednesday, the chance for snow spreads southward along the western Oklahoma border.
all areas will see significant cloud cover and noticably cooler temps than of late. with possibly some slightly cooler temps across any areas that receive a light blanket of snow today.
406 AM EST Tue Jan 25 2022 A cold front will push through the forecast area today as an upper level disturbance tracks across northern portions of the Gulf of Mexico through this evening. With the cold front passage, light winds and clearing skies overnight temperatures will up to 10 degrees from this morning's expected lows.
Cooler temperatures expected today with increasing cloudiness across eastern Arizona.
415 AM EST Tue Jan 25 2022 An upper level trough is expected to remain over the eastern U.
Outside of the very cold temperatures, a benign forecast expected for today with a mostly sunny sky and highs ranging from near 20 across south central SD to a shade below zero over the deeper snowpack area of the Buffalo Ridge of SW MN. Forecast soundings would suggest wind gusts during the day Wednesday may exceed 35-40 mph, particularly along the higher elevations of the Buffalo Ridge.
318 AM MST Tue Jan 25 2022 Utah and southwest Wyoming will remain under northerly flow east of a ridge off the West Coast for much of the upcoming week.
Clouds start to roll into the CWA overnight Tuesday into Wednesday ahead of the next cold front. The weak cold front is forecast to move through around Wednesday afternoon. The cloud cover will only allow us to get into the lower 60s for Wednesday with rain moving into Deep South Texas in the afternoon with the incoming frontal passage.
638 AM EST Tue Jan 25 2022 An upper level trough is expected to remain over the eastern U.
Highs look to stay around the freezing mark. The cloud-bearing layer will be shallow but residing in air temperatures around -10 to -12C with surface temperatures in the low 20s F. Tonight the center of a dome of strong Canadian high pressure will advance from South Dakota to Iowa, continuing our supply of cold air. Though skies will be mostly clear tonight (some thin cirrus is possible, especially across southern Kentucky), conditions won't quite be ideal for radiational cooling as north breezes ahead of the center of the high continue through the night near 10 mph.
Through the morning and afternoon hours of Tues, aforementioned cold frnt is expected to cont to move through the FA from N/W to S/E, ushering in cooler morning temps for most, w/ lows bottoming out low 20s to mid 30s over the Natural State. Gusty Nrly to N/Erly winds wl be seen by most, particularly over Ern AR and the MS River Delta region, along w/ cooler afternoon highs, especially Nrn AR where temps wl lkly stay in the upper 30s through the day. No mentionable wx is expected until later Wed night, w/ afternoon temps trending cooler once more across the FA.
High pressure will provide mostly sunny skies today. On Wednesday night, cold front will approach the area. Warm air advection ahead of this system will result in temperatures rising through the evening and the high temperature for the day occurring around midnight in the teens.
325 AM CST Tue Jan 25 2022 After a brief reprieve featuring above normal temperatures yesterday, an arctic cold front has swept through the region, bringing with it an abrupt return to below average temperatures.
06z data has the arctic high over the northern Plains while a cold front ran from the Mid-Atlantic region into the southern Plains. Dry but very cold conditions will be seen today through tonight as arctic high pressure moves through the Midwest.
This region will slowly moisten from 06-12Z but a general lack of saturation would suggest mostly freezing drizzle across much of the region prior to saturation. Have therefore reduced PoPs over southern and eastern portions of the CWA from 12z-18z Wednesday in tandem with surrounding offices; however, a narrow saturated layer centered near 800-850mb will result in the continuation of patchy freezing drizzle across much of the area during the morning. Residual low level moisture may result in additional flurries or patchy freezing drizzle Wednesday evening for locations east of the Caprock Escarpment.
325 AM CST Tue Jan 25 2022 Today and Tonight: Rain will exit the forecast area through early afternoon as a dry cold front moves through the region. Behind the exiting cold front, high pressure will steadily build into the region.
340 AM CST Tue Jan 25 2022 Cold air persists across the area with arctic high pressure entrenched this morning with temps in the teens and 20s below for most of the region, there are a few spots that have touched 30 below, and with the light NW winds the wind chills are as cold as 45 below. As southwesterly winds increase overnight in response to tightening pressure gradient with high pressure departing to the southeast and clipper system to track across Manitoba into Ontario the temps will rise with mixing and increasing clouds.
Cold advection will result in a sizable temperature gradient from northwest to southeast on Wednesday morning, ranging from the lower 20s in the northwest to mid 30s in the southeast.
838 AM EST Tue Jan 25 2022 An upper level trough is expected to remain over the eastern U.
GEG continues to report freezing fog at VLIFR which will likely continue into the late morning hours.
The center of the high will sink southeast across southwest MN late this afternoon and into northern and eastern IA by midnight. Lighter winds this as the ridge axis works east across the area should allow temps to drop quickly. South winds will begin increasing quickly overnight as the high continues southeast and strong low pressure passes to the north across Canada.
Anticipate breezy to windy conditions for areas generally along and west of the Lower Colorado River Valley Tuesday afternoon into early Wednesday as a dry weather disturbance moves through the region. A warming trend will commence during the latter half of the week as high pressure builds across the western United States. As this occurs, pressure gradients will tighten and promote gusty northerly winds generally along and west of the Lower Colorado River Valley this afternoon and evening. High temperatures today will top out in the low 70s along and west of the Lower Colorado River Valley with upper 60s to near 70 expected elsewhere across the lower deserts.
Cold air persists across the area with arctic high pressure entrenched this morning with temps in the teens and 20s below for most of the region, there are a few spots that have touched 30 below, and with the light NW winds the wind chills are as cold as 45 below. As southwesterly winds increase overnight in response to tightening pressure gradient with high pressure departing to the southeast and clipper system to track across Manitoba into Ontario the temps will rise with mixing and increasing clouds.
/Issued 406 AM EST Tue Jan 25 2022/ A cold front will push through the forecast area today as an upper level disturbance tracks across northern portions of the Gulf of Mexico through this evening. With the cold front passage, light winds and clearing skies overnight temperatures will up to 10 degrees from this morning's expected lows.
Temperatures will warm a little tomorrow as the high moves off to the east and winds become southerly.
Dew points remain in the mid to upper 30s and current temperatures are a bit cooler, so may end up seeing a bit more extensive valley fog this morning.
As the morning progresses, isentropic lift continues to increase across the area with the low to mid levels becoming saturated.
/19/ Today and Tonight: Rain will exit the forecast area through early afternoon as a dry cold front moves through the region. Behind the exiting cold front, high pressure will steadily build into the region.
A cold front passing through today will bring breezy north winds, with the strongest gusts of around 40 mph in the Colorado River Valley.
Then, a cold front quickly follows during the day on Wednesday.
Widespread freezing fog and stratus has developed in the valleys of the Northern Rockies this morning. A dense fog advisory may be needed in these locations for the morning commute, due to the low visibility and potential slick roads.
Expect a gradual warm-up in temperatures over the course of the week with Wednesday's high flirting with the freezing threshold in west-central MO and eastern Kansas and ranging into the lower 20s in northern MO.
Temperatures will remain much below climo though rising just above freezing in most locales Wednesday afternoon.
357 PM EST Tue Jan 25 2022 A cold front moves through this morning with falling temperatures in the afternoon. High pressure builds into the region by Wednesday night.
In areas that have seen more sun, they have been able to warm into the lower to mid 50s, while other sites have remained in the lower 50s and persistent cloud cover. However, conditions will be chilly again with lows in the mid to upper 20s through much of the area and around freezing to the south.
with the lowest values in the western portion of the warning area.
We delayed the onset of the HIGH rip current risk until this evening given lifeguard reports this morning and the latest data indicating that swell starts ramping up the rip current frequency by early this evening.
CD Chattanooga Airport, TN 26 42 24 50 35 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 23 39 21 48 32 / 0 0 0 0 10 Oak Ridge, TN 22 38 21 47 32 / 0 0 0 0 10 Tri Cities Airport, TN 21 35 18 45 29 / 0 0 0 0 10.
arctic high pressure settling southeast over the mid-Mississippi Valley will maintain a cold NE wind overnight. There is large spread in guidance, with the MOS going cold and others such as raw and blended guidance going warmer. Decided to hedge toward the warmer numbers due to uncertainties with cloud cover. Deep cyclonic flow persists over much of the nation to the east of ridging along the West Coast. In the low levels, the glancing blow of arctic air we are getting currently begins modifying Wednesday night as low level winds gain a southerly component. Model soundings show above freezing temps and a dry sub- cloud layer from 850mb downward. Accumulations are likely to be a dusting at best, and with surface temps near or just above freezing, travel impacts are not expected.
Low stratus and patchy, freezing fog expected to redevelop tonight and linger into the morning hours across portions of the Snake Plain and Magic Valley.
Forecast Summary: Much warmer on Wednesday with even warmer temperatures this weekend.
Relatively cooler temperatures are expected today with increasing cloudiness across northern Arizona.
A cold front will be approaching the area this morning, and move through toward sunrise. DGS Chattanooga Airport, TN 54 26 42 24 50 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 48 23 39 21 48 / 0 0 0 0 0 Oak Ridge, TN 48 22 38 21 47 / 0 0 0 0 0 Tri Cities Airport, TN 44 21 35 18 45 / 10 0 0 0 0.
Light rain in recent observations from Orlando to Leesburg westward show the low-levels have finally moistened, allowing rain to reach the surface. Some of the early 12Z high res guidance indicates the heaviest rainfall might hold off a bit longer than currently forecast, reaching our area around sunset this evening, then quickly diminishing after midnight as the low reaches the coast of southern FL. Shower activity will increase this afternoon and evening as an area of low pressure crosses Central FL. However, there will be a high coverage of showers and possibly a lightning storm or two this afternoon and tonight as an area of low pressure moves through the local waters. The highest rain chances are expected overnight.
/Issued 1043 AM EST Tue Jan 25 2022/ Surface cold front has begun making its way through the Peach State this morning with light precip occurring just ahead. Thus, highs look on track for upper 50s to low 60s and lows below freezing north of I20 tonight. /Issued 406 AM EST Tue Jan 25 2022/ A cold front will push through the forecast area today as an upper level disturbance tracks across northern portions of the Gulf of Mexico through this evening. With the cold front passage, light winds and clearing skies overnight temperatures will up to 10 degrees from this morning's expected lows.
Low-level MVFR/IFR ceilings may make a return beginning an hour or two before midnight tonight at all TAF sites, as a weak cold front pushes through the region. Clouds start to roll into the CWA overnight Tuesday into Wednesday ahead of the next cold front. The weak cold front is forecast to move through around Wednesday afternoon. The cloud cover will only allow us to get into the lower 60s for Wednesday with rain moving into Deep South Texas in the afternoon with the incoming frontal passage.
Therefore, have upgraded both the headline and increased snow amounts in this area to include the higher amounts. It looks like the heaviest snowfall axis will continue to remain northeast of the actual city of Garden City with the highest amounts in the more rural parts of the county. As the morning progresses, isentropic lift continues to increase across the area with the low to mid levels becoming saturated.
249 PM CST Tue Jan 25 2022 A strong area of high pressure at the surface will move east of the area overnight, which will allow south to southwest flow to develop. A nice nose of warmer air will build into the area on Wednesday and bring mild and windy conditions.
202 PM CST Tue Jan 25 2022 A widespread cold pattern continues with a longwave upper level trough across the central and eastern states. On the surface map, a 1036mb high pressure system was centered over North Dakota.
1043 AM EST Tue Jan 25 2022 Surface cold front has begun making its way through the Peach State this morning with light precip occurring just ahead. Thus, highs look on track for upper 50s to low 60s and lows below freezing north of I20 tonight. /Issued 406 AM EST Tue Jan 25 2022/ A cold front will push through the forecast area today as an upper level disturbance tracks across northern portions of the Gulf of Mexico through this evening. With the cold front passage, light winds and clearing skies overnight temperatures will up to 10 degrees from this morning's expected lows.
These snow showers will be enhanced by the increasing low level convergence as a result of the low level trough that forms on the lakeshore and the land breeze that tries to get going tonight. -Temperatures tonight The low level flow inland becomes divergent overnight with several models showing an easterly flow developing. Subsidence with the high building in may support some clearing inland.
231 PM CST Tue Jan 25 2022 Latest surface analysis shows a large area of high pressure over the north central CONUS. The center of this high will sink southeastward into Missouri and Illinois by tomorrow morning causing the winds to become light and variable at the same time skies will be mainly clear. There will be a upper trough that will be dropping south toward the area late tomorrow night, but the atmosphere will be dry through a deep layer so will keep the forecast dry.
907 AM MST Tue Jan 25 2022 An upper ridge/high is centered off the US west coast this morning with upper low just east of Hudson Bay and northerly flow in between across the Northern Rockies and MT. Low clouds extend from Havre south to Lewistown and into Gallatin county this morning with a few lingering flurries south of the Little Belts and some freezing fog earlier this morning in the Gallatin Valley. Drier and more stable air works into the region from NW to SE today with the incoming ridging for clearing and dry conditions across all areas by this afternoon. A period of drifting snow is possible as winds increase late this morning, but fairly wet/dense nature of snow and temps warming above freezing should limit the extent and duration of any impacts to visibility.
/issued 308 AM CST Tue Jan 25 2022/ 08Z surface analysis places an arctic cold front stretching from East Tennessee back through Southwest Tennessee and back into Central Arkansas. The pleasant temperatures the Mid-South experienced in the lower 60s yesterday was short-lived as short term models indicate the aforementioned arctic cold front will continue to push south today. A ridge of arctic high pressure will build in across the Middle and Lower Mississippi Valleys into Wednesday. Temperatures will be much cooler today and Wednesday with highs in the upper 30s to around 40 degrees north of I-40 and 40s south.
Early Wednesday, a trough centered over New Mexico will continue to push east toward the southern Plains. However, enough lift with the trough will bring a decent chance of accumulating snow to parts of southwest/west central Oklahoma and western north Texas. Most of the precipitation with this event is expected to be snow or rain, but there is a chance that light freezing drizzle may occur if enough drying occurs within the DGZ Wednesday evening.
It will be colder to start with lows in the mid 20s north and just below freezing in our far south.
Temperatures have struggled to get above zero today with an arctic high pressure dominant in the Upper Midwest. This high will continue to drive our weather through Wednesday morning with continued clear skies and cold air. As we move into Wednesday morning the high will be moving out and the winds will shift to the south. This warming will lead to a 40 to 50 degree increase in temperatures as this warmer air advects in.
903 AM CST Tue Jan 25 2022 (Today and tonight) Colder air will continue to move into Oklahoma today with the ridge of the air mass remaining in Oklahoma into Wednesday. As this upper trough moves slowly toward central NM by sunrise Wednesday, the chance for snow spreads southward along the western Oklahoma border.
Currently, air temperatures are in the lower or mid 70s in most Keys island communities. Dewpoint temperatures have increased some 10 degrees F since sunrise, with current readings in the lower 60s across the Keys. The warm sector of a weak, east-southeastward-moving low pressure system is nearing the Keys and adjacent coastal waters, with even higher surface dewpoints and total precipitable water values just upstream over the southern Gulf of Mexico. We have indicated elevated sky cover, rain, and thunder chances for tonight through Wednesday night as a weakening low pressure system migrates east- southeastward across southern Florida.
The low at Key West international Airport was 56F, and a minimum temperature of 53F was recorded both here at the WFO in mid-town Key West and the Florida Keys Marathon International Airport. Winds likely will undergo some rapid fluctuations in speed and direction, especially west of the Seven Mile Bridge where isallobaric forcing associated with the low pressure area combined with convective processes wreaks havoc with local gradient flows. Gentle to moderate southeast breezes will develop today, as low pressure moves east across the Gulf of Mexico. The low will weaken tonight, with gentle to moderate breezes rapidly clocking around from southeast to south and southwest.
Anticipate breezy to windy conditions for areas generally along and west of the Lower Colorado River Valley this afternoon into early Wednesday as a dry weather disturbance moves through the region. A warming trend will commence during the latter half of the week as high pressure builds across the western United States. As this occurs, pressure gradients will tighten and promote gusty northerly winds generally along and west of the Lower Colorado River Valley this afternoon and evening. High temperatures today will top out in the low 70s along and west of the Lower Colorado River Valley with upper 60s to near 70 expected elsewhere across the lower deserts.
As with this morning's update, still not thinking about areas of icy roadways due to the warmer ground temperatures with these lingering areas of drizzle. Temperatures won't recover much through the day Wednesday and overnight lows for Wednesday are even colder due to lack of cloud cover and reinforced northwest flow courtesy of a the longwave trough the CWA has been mired in for the last couple days.
1120 AM CST Tue Jan 25 2022 (The rest of today ) It's a much cooler start to the day today following the passage of a cold front yesterday. Gusty northerly winds will also make it feel even cooler most of the day, with gusts near 20 mph expected throughout the day.
Temperatures will be a little cooler behind the system, with the new snow cover helping with that. It will be mainly dry across the area as ridging moves through. This will change early Wednesday when a new trough will swing into the area and bring another bout of snow.
1129 AM CST Tue Jan 25 2022 After a brief reprieve featuring above normal temperatures yesterday, an arctic cold front has swept through the region, bringing with it an abrupt return to below average temperatures.
143 PM MST Tue Jan 25 2022 Water vapor shows long wave trof over the central/eastern CONUS with northwest flow aloft across the Northern Plains. Short wave ridge is folding from the Pac NW through the Northern Rockies, with next upstream clipper diving southeast across northern BC. Winds will gradually turn west to northwest on Wednesday with surface trof moving through ahead of the next approaching cold front.
/issued 236 AM EST Tue Jan 25 2022/ An extensive U/L trough over eastern North America will persist through the remainder of the week. A series of northern stream disturbances will move through the base of the trough which is located across the northern Gulf of Mexico. The first disturbance will approach the Florida peninsula late today and will begin to shear out as it rounds the base of the trough tonight. Better chance for marine thunderstorm activity to hold together to the south where water temps are bit warmer.