Aikyam-Lab/Synoptic-Bench huggingface dataset:
105 PM CST Tue Nov 23 2021 A forecast update is in place for warmer temperatures this afternoon and lower dew points resulting in lower RH. A quiet weather pattern will continue through the short term as upper level ridging remains in place across the western US. An approaching trough on Wednesday will push a cooler airmass into the region on Wednesday. While cooler temperatures are expected with this trough, precipitation is not expected and conditions will remain dry through Wednesday.
Issued by National Weather Service San Angelo TX 207 PM CST Tue Nov 23 2021 Lee trough will continue to bring southernly winds tonight. Temperatures will not be as cold, with lows the 40s on the caprock to lower 50s in the low rolling Plains. ahead of a strong cold front that will move in the southern Panhandle late afternoon. Downsloping west winds will be tempered somewhat by high cloudiness, with highs Wednesday in the lower to mid 70s, except for upper 60s in the southwest Texas Panhandle. Brownfield line as a strong cold front moves through.
The upper level trof will be shearing off into a closed low over Baja Mexico, with the northern branch of the trof advancing across the midsection of the country. At the surface, a southerly flow will continue until a surface cold front starts to move across the area on Thanksgiving day.
A cold start to the day with most locations in the low to mid 20s.
After the coldest morning for most yet this season, temperatures have quickly rebounded and should top out this afternoon in the upper 60s for portions of the Hill Country to the low to mid 70s elsewhere. In addition to the high clouds, tonight will see a surge in low- level moisture as the nocturnal low-level jet above the surface intensifies. This will yield to a much warmer night. A warm day will be expected on Wednesday under mostly cloudy to overcast skies with the afternoon highs ranging from the low 70s across the Hill Country to near 80 degrees across our southern zones. Wednesday night will see rain and storm chances ramp up as lift increases ahead of the upper level troughing to the west and the next cold front moving in from the north.
Thanksgiving morning will see a mix of rain and snow before warmer temperatures begin to drive snow levels up heading into the holiday weekend.
Mostly sunny skies along with windy conditions are prevailing this morning and will into the afternoon in the wake of yesterday's cold front passage. This is about 7 to 10 degrees cooler than this time yesterday. A reinforcing cold front currently located just south of Lake Okeechobee, will sweep through later today. Thereafter, breezes will slacken as ridging settles in across the southeast U.
Upper level ridging will move overhead through the day on Wednesday, and a south wind may gust 20-25 mph in the afternoon. Our next cold front is set to arrive just in time for Thanksgiving Day, as a longwave trough sweeps across the Upper Midwest and Ohio Valley.
307 PM EST Tue Nov 23 2021 A reinforcing cold front noted earlier this morning has swept across the Florida Keys and now sits across the Straits of Florida this afternoon. Key West and Marathon airports topped out in the lower 70s, a few degrees short of mid 70s.
222 PM CST Tue Nov 23 2021 Another quiet day is underway as high pressure remains anchored over south central KY. Winds will rapidly increase from the south ahead of an approaching cold front.
KS Chattanooga Airport, TN 30 56 36 59 33 / 0 0 0 30 50 Knoxville McGhee Tyson Airport, TN 27 55 34 58 33 / 0 0 0 30 70 Oak Ridge, TN 27 54 34 56 31 / 0 0 0 40 60 Tri Cities Airport, TN 24 53 30 55 31 / 0 0 0 20 80.
Meso low developing along a cold front across the Northern Plains leading to an increasing pressure gradient across the area. Momentum is expected to mix down on Wednesday leading to continued gusty winds ahead of a cold front that will move through later Wednesday afternoon. The above normal temperatures won't last however as cold front moves through Wednesday evening. Much cooler conditions are expected on Thanksgiving.
A surface cold front moves through the region tonight through Wednesday morning, providing cooler temperatures and areas of light snow. Snow is expected to begin over the Northern Rockies by late morning, then spread east of the Continental Divide later into the afternoon or early evening with the passing cold front. Temperatures trend warmer due to an amplifying upper level ridge over the Pacific Northwest, and strengthening downslope winds. 1046 AM MST Tue Nov 22 2021 (23/18Z TAF period) VFR cigs will lower to MVFR conditions from north to south with a passing cold front.
A large high pressure ridge centered over KY/TN is expected to keep the southeastern U. This ridge sinks SE tonight becoming centered over the Carolinas Wed which puts GA in easterly flow. Temperatures rebound just a bit Wed with high temps about 4 to 8 degrees warmer than today.
Mid-level ridging and high pressure at the surface will lead to dry and seasonal weather through Wednesday afternoon. On Wednesday, temperatures will top out in the low to mid 80s across most of the area while Wednesday night will remain warm and muggy with overnight lows in the mid 60s north to upper 60s and low 70s south and east.
Warmer temperatures and breezy south winds will be the main story for tomorrow. (Wednesday night through next Tuesday) A cold front should push into the area late Wednesday night, and may result in some scattered showers across our southeast counties.
Upper trough is seen on satellite imagery over eastern WA/OR, and continuing eastward. The associated cold front will push through around mid to late afternoon, leaving us with some breezy conditions across the Snake Plain and Eastern Magic Valley through tonight. Light snowfall will accompany the cold front tonight, but accumulation remains fairly light. The Sawtooth Range can get about 3 to 5 inches in the higher elevations, and about 1 to 3 inches around the pass levels.
1248 PM EST Tue Nov 23 2021 Aviation - Tranquil weather through Wednesday - A high pressure ridge will continue to bring fair wx today.
Warmer temperatures and breezy south winds will be the main story for tomorrow.
307 PM EST Tue Nov 23 2021 Cooler air mass will keep temperatures well below normal tonight and Wednesday. Widespread freezing temperatures are expected this evening with mid-20s inland.
336 PM CST Tue Nov 23 2021 A Pacific cold front moving through the Pac-northwest this afternoon will move through wrn and ncntl Nebraska tonight followed by a reinforcing Canadian cold front Wednesday. The Canadian cold front is currently just north of Montana. The same models suggests a very modest Black Hills convergence across the Pine Ridge Wednesday afternoon. This is based on the atmosphere remaining relatively well mixed with the passage of the first cold front tonight and the arrival of cooler Canadian air Wednesday. The ECM, GFS and their ensembles continue to show strong ridging across the wrn U.
Highs range from the low 60s across western Minnesota to the upper 40s-low 50s elsewhere. Enjoy the warm temperatures while they last, as a cold front moves through the region overnight through tomorrow morning with temperatures falling throughout the day on Wednesday. A frigid Thanksgiving is expected as cold advection continues in the wake of the cold frontal passage. Temperatures should warm into the low to mid 20s as skies clear out during the afternoon, but a brisk northwest wind will keep wind chills in the teens.
Surface analysis reveals a 1029mb high pressure system with Canadian origins centered over Kentucky and Tennessee this afternoon. This has resulted in dry and cool conditions today as current temperatures are just now getting into the low and mid 40s. Afternoon highs will be about 10-12 degrees warmer tomorrow compared to today as southerly/southwesterly flow advects in milder air.
451 PM MST Tue Nov 23 2021 Gusty westerly component flow continues this afternoon over the higher elevations, urban corridor, and adjacent plains. Observations show gusts 30-40 mph over the high elevations with gusts extending eastward into the urban corridor up to 30 mph. Overnight, an upper level trough approaches from the west resulting in a subtle increase in moisture. A cold front pushes through in the 2am-6am timeframe across the plains. An upper level trough pushes into the region Wednesday, accompanied by orographic flow into the mountains allowing a few snow showers during the day.
204 PM MST Tue Nov 23 2021 A cold front will sink south through the area this evening into tonight ushering in much colder air, breezy north winds, and a band of snow. A Lake Wind Advisory has been issued from 8 PM tonight through 8 AM Wednesday morning as north winds increase to around 20 mph behind the cold front. Wednesday will be much colder as the upper level trough engulfs the Western CONUS and Canadian high pressure drops south into the area. The cold will be short lived as another ridge quickly builds over the West, bringing warmer downslope flow into Montana to begin the holiday weekend.
354 PM CST Tue Nov 23 2021 Summary: Warmer temperatures tonight and tomorrow will decrease significantly as a cold front moves through with the chance for light snow showers and flurries.
As the two waves approach each other tomorrow across the Central CONUS, the entire mid-tropospheric trough axis will broaden and become increasingly positive-tilted. This trough orientation will favor fairly significant lower tropospheric anticyclogenesis and subsequent high pressure rises at the surface as well as a rapid southward transport of colder air in the low levels. Given the timing of the cold front tomorrow and the strongest cold air advection not really beginning midday or early afternoon, we should still see temperatures warm to close to 60F across much of the forecast areas with lower 60s in the Red Hills region.
619 PM CST Tue Nov 23 2021 A Pacific cold front moving through the Pac-northwest this afternoon will move through wrn and ncntl Nebraska tonight followed by a reinforcing Canadian cold front Wednesday. The Canadian cold front is currently just north of Montana. The same models suggests a very modest Black Hills convergence across the Pine Ridge Wednesday afternoon. This is based on the atmosphere remaining relatively well mixed with the passage of the first cold front tonight and the arrival of cooler Canadian air Wednesday. The ECM, GFS and their ensembles continue to show strong ridging across the wrn U.
A cold front will pass through the area tonight and Wednesday, resulting in cooler but seasonal temperatures on Wednesday along with gusty north winds.
A ridge of higher pressure allowed skies to remain clear today, as strong southerly winds blew warm, dry air into the region. Wind speeds will decrease this evening and tonight, eventually shifting to the northwest, as a cold front swings through early tomorrow morning.
326 PM MST Tue Nov 23 2021 Fast w-sw upper flow across CO today in advance of short wave trough moving out of the western U. Cold front associated with the trough sweeps southward through the plains Wed morning, with weak upslope component deepening after 18z along and west of I-25. Max temps area-wide on Wed will be much cooler than the past few days, as clouds/precip and cold advection knock readings back some 10-20 degf.
In addition to the normal diurnal trend, there is also a cold front approaching the area from the northwest.
The cooler temperatures will keep relative humidity minimums well above critical fire weather values.
Another quiet day is underway as high pressure remains anchored over south central KY. Winds will rapidly increase from the south ahead of an approaching cold front.
506 PM CST Tue Nov 23 2021 Temperatures will be on the increase into Wednesday in advance of a surface cold front.
Scattered snow showers behind the cold front will continue to cause some impacts the across the Northern Rockies this evening. The shower activity will be diminishing throughout the night as a weak ridge of high pressure builds over the region. This ridge will give the majority of the Northern Rockies a respite from precipitation through Thanksgiving day. A few very light showers could linger across extreme northwest Montana during this period, but they should be mainly confined to the higher terrain.
544 PM EST Tue Nov 23 2021 High pressure will move overhead overnight.
/issued 245 PM EST Tue Nov 23 2021/ Upper level trough along the eastern seaboard will continue to move east out into the Atlantic Ocean with some ridging building over the eastern U. Late in the week the next upper level trough moves into the eastern U. Meanwhile at the surface, high pressure over the eastern U.
RH values have crashed this afternoon as strong downslope flow has overspread the high plains. Overnight, a well- advertised cold front will sag southward and pass through all of southeast Wyoming and western Nebraska by sunrise. The exception will be in the higher elevations of the Snowy and Laramie ranges. With lighter winds and clear skies on Wednesday night, expect cold temperatures bottoming out in the teens in most locations with single digits possible in the higher mountain valleys in Carbon and Albany counties.
High pressure is retreating east and southerly return flow is starting up across the region. Coldest readings, down to the freezing mark or a little below, will be along eastern portions of the forecast area where winds will be lightest. Southerly flow will continue to strengthen in advance of an approaching cold front. Temps will warm into the lower 60s.
Expect VFR conditions to prevail across the RGV tonight through early Wednesday morning even as an onshore flow continues to increase across the lower Texas coast tonight. Mid-level ridging and high pressure at the surface will lead to dry and seasonal weather through Wednesday afternoon. On Wednesday, temperatures will top out in the low to mid 80s across most of the area while Wednesday night will remain warm and muggy with overnight lows in the mid 60s north to upper 60s and low 70s south and east.
so allowed the High Wind Warnings to expire at 5PM. RH values have crashed this afternoon as strong downslope flow has overspread the high plains. Overnight, a well- advertised cold front will sag southward and pass through all of southeast Wyoming and western Nebraska by sunrise. The exception will be in the higher elevations of the Snowy and Laramie ranges. With lighter winds and clear skies on Wednesday night, expect cold temperatures bottoming out in the teens in most locations with single digits possible in the higher mountain valleys in Carbon and Albany counties.
A deep trough exists over the western CONUS with broad southwesterly flow aloft over the Plains. Pressure falls downstream of this trough will contribute to a deepening cyclone over the Central Plains.
525 PM CST Tue Nov 23 2021 An upper level storm system moving across the Rockies will increase the low level winds just off the deck at KCDS later this evening lasting through Wednesday morning. /issued Issued by National Weather Service San Angelo TX/ Lee trough will continue to bring southernly winds tonight. Temperatures will not be as cold, with lows the 40s on the caprock to lower 50s in the low rolling Plains. ahead of a strong cold front that will move in the southern Panhandle late afternoon. Downsloping west winds will be tempered somewhat by high cloudiness, with highs Wednesday in the lower to mid 70s, except for upper 60s in the southwest Texas Panhandle. Brownfield line as a strong cold front moves through.
Cold front moves SE through the area this evening and overnight shifting winds toward the NW by sunrise. Soundings show sufficient momentum transfers and slight mixing through the lower levels. Saturation is found through the lower levels, with less inverted v structure and dry air aloft. Synoptic forcing from the trough looks to translate faster than the frontogentic energy thus limiting higher QPF for the region. In order to truly have a longer duration of below 1/2 mile visibility conditions would need to be cooler and winds on the stronger side. Behind the front temperatures are on the cooler side dropping through Thanksgiving morning. The coming week will likely mark a transition from the somewhat mild mid-fall period into a cooler and wetter late fall period.
Have also bumped up wind for the next few hours as the cold front draped across the north in forming a tighter pressure gradient over Phillips and Valley county than previously anticipated. GAH AFTERNOON DISCUSSION: A cold front will sink south through the area this evening into tonight ushering in much colder air, breezy north winds, and a band of snow. A Lake Wind Advisory has been issued from 8 PM tonight through 8 AM Wednesday morning as north winds increase to around 20 mph behind the cold front. Wednesday will be much colder as the upper level trough engulfs the Western CONUS and Canadian high pressure drops south into the area. The cold will be short lived as another ridge quickly builds over the West, bringing warmer downslope flow into Montana to begin the holiday weekend.
Models still in good agreement as an upper level system out west starts pushing a cold front into northwest Oklahoma by the early afternoon hours. Little bit tricky with tomorrows high temperatures in the warm sector, with MAV guidance much warmer considering much of our area will be under cloudiness, although high clouds across our west may be thinner with some sun. As a result, went just a little bit warmer than NBM for tomorrows MaxT using the CONSMOS guidance.
424 PM MST Tue Nov 23 2021 Water vapor shows upper ridge over the Northern Plains/Upper Midwest, with trof building through the western CONUS. At the surface, low is located over far western SD with trof extending southward into eastern CO. Cold front is diving south through southern ALTA. Cold front will move into the area late tonight, with increasing northwest winds and much cooler air filtering in. Thanksgiving will be a bit warmer as the upper trof shifts to our east, with highs mainly in the 40s.
840 PM EST Tue Nov 23 2021 Temperatures are running quite a bit cooler west of I-65 at this hour than what is in the forecast, so made adjustments accordingly. Surface analysis reveals a 1029mb high pressure system with Canadian origins centered over Kentucky and Tennessee this afternoon. This has resulted in dry and cool conditions today as current temperatures are just now getting into the low and mid 40s. Afternoon highs will be about 10-12 degrees warmer tomorrow compared to today as southerly/southwesterly flow advects in milder air.
A cold front sweeping across the region on Tuesday afternoon brings cooler but sunny weather on Wednesday. Strong high pressure builds over Nevada on Thanksgiving Day, starting another warming trend into the extended holiday weekend. Not much moisture accompanies the cold front that is dragging across Nevada today. Once the cold front moves downstream, dry northerly component brings colder air into the state. Strengthening high pressure nose builds over California and Nevada on Thanksgiving Day that starts a warming trend with mostly sunny conditions.
255 PM MST Tue Nov 23 2021 Gusty westerly component flow continues this afternoon over the higher elevations, urban corridor, and adjacent plains. Observations show gusts 30-40 mph over the high elevations with gusts extending eastward into the urban corridor up to 30 mph. Overnight, an upper level trough approaches from the west resulting in a subtle increase in moisture. A cold front pushes through in the 2am-6am timeframe across the plains. An upper level trough pushes into the region Wednesday, accompanied by orographic flow into the mountains allowing a few snow showers during the day.
All the models are six hours or more fast on moving the trough in the Pacific Northwest, though the lagging members of the ensemble models are capturing it reasonably well. That being said, based on the general direction of the models, look for the northern trough to move east into Wyoming Wednesday with high pressure moving into the Great Basin pushing colder,dry air into the region. The cutoff low will move inland and open into a deep trough coupled with the northern trough.
528 PM CST Tue Nov 23 2021 Summary: Warmer temperatures tonight and tomorrow will decrease significantly as a cold front moves through with the chance for light snow showers and flurries.
654 PM EST Tue Nov 23 2021 Warmer conditions for Wednesday. Another cold front with rain can be expected on Thanksgiving. The sky will clear by evening with building high pressure. High pressure with neutral to weak warm advection, will result in a dry Wednesday with seasonable temperature.
534 PM CST Tue Nov 23 2021 Cold front moves SE through the area this evening and overnight shifting winds toward the NW by sunrise. Soundings show sufficient momentum transfers and slight mixing through the lower levels. Saturation is found through the lower levels, with less inverted v structure and dry air aloft. Synoptic forcing from the trough looks to translate faster than the frontogentic energy thus limiting higher QPF for the region. In order to truly have a longer duration of below 1/2 mile visibility conditions would need to be cooler and winds on the stronger side. Behind the front temperatures are on the cooler side dropping through Thanksgiving morning. The coming week will likely mark a transition from the somewhat mild mid-fall period into a cooler and wetter late fall period.
927 PM EST Tue Nov 23 2021 Dry weather will continue tonight through Wednesday as high pressure tracks from Kentucky to the East Coast. Widespread rain is forecast for Thanksgiving Day along a cold front traveling from the west.
Chilly conditions for the next couple of days will be followed by some daytime warming through the holiday weekend, even with light winds and valley inversions, as high pressure remains in place. Breezy conditions continue this afternoon in association with a weak trough and cold front passage. For tonight, winds will shift to the northwest/north then northeast/east with decreasing speeds, except for some gusty winds (up to 50 mph) returning for Sierra ridges. Otherwise, high pressure off the west coast will likely settle inland over much of CA-NV through the Thanksgiving weekend, and continue through the remainder of November with dry conditions and light winds.
With northwest flow overnight, temperatures will dip into the low to mid 20s across northern Missouri and northeastern Kansas. The KC Metro will easily drop a few degrees below freezing by daybreak.
1140 PM CST Tue Nov 23 2021 Summary: Warmer temperatures tonight and tomorrow will decrease significantly as a cold front moves through with the chance for light snow showers and flurries.
1043 PM CST Tue Nov 23 2021 A Pacific cold front moving through the Pac-northwest this afternoon will move through wrn and ncntl Nebraska tonight followed by a reinforcing Canadian cold front Wednesday. The Canadian cold front is currently just north of Montana. The same models suggests a very modest Black Hills convergence across the Pine Ridge Wednesday afternoon. This is based on the atmosphere remaining relatively well mixed with the passage of the first cold front tonight and the arrival of cooler Canadian air Wednesday. The ECM, GFS and their ensembles continue to show strong ridging across the wrn U.
Isolated light showers were noted on radar in the higher elevations of southwest Idaho this evening. The showers will end overnight as an upper trough moves to our east. An upper ridge will build in from off the coast through Wednesday. Rain and snow showers were moving east across Idaho zones this afternoon and will end in the valleys by sunset and in the mountains by late evening, as the supporting upper trough exits our CWA. Pacific upper ridge will build inland Wednesday and Thanksgiving Day and develop a temperature inversion, with the low elevations staying relatively cold and possibly foggy during the nights and mornings.