Aikyam-Lab/Synoptic-Bench huggingface dataset:
410 AM PST Fri Nov 26 2021 High pressure will control the weather across our area. Today and Tonight: High pressure will center over the Great Basin as surface ridging prevails across our area. Overnight lows will generally be a few degrees warmer overall; mostly in the 40s to lower 50s. Saturday through Friday: Stout upper ridging will prevail from CA and the adjacent Pacific waters into the Great Basin. The high pressure affecting the area will continue to keep winds light to moderate and prevent cloud cover from lowering CIGS. KSFO Bridge Approach.
754 AM EST Fri Nov 26 2021 Snow showers along and north of the Pennsylvania turnpike and in the ridges will gradually diminish into tonight.
NW winds Saturday and mild temps as temps climb to above freezing all areas in the aftn as skies clear from west to east.
854 AM CST Fri Nov 26 2021 We are off to a cold start to the morning with current temps in the lower 30s as of 8am. The pressure gradient from the high pressure building across the Lower MS Valley and the wedge front off to our east, winds will stay breezy, gusting from 10 to 15 mph into this afternoon. We'll be under the influence of high pressure at the surface on Saturday, with continued clear and dry conditions.
702 AM EST Fri Nov 26 2021 Today's cold front is currently in the FL Panhandle and will trek south across the area this morning and afternoon. Cold front tracks south over the waters today with only low chances of showers and winds shifting to north and northwest and increase to no more than 15 knots. A second front moves through Sun night-Mon then high pressure builds in for much of the week.
Do also expect that temperatures will begin to trend more above normal late week with more substantial southerly flow as a stronger ridge of high pressure builds across Gulf States. High pressure building into the area will keep quiet weather across the TAF sites this period, although northwest winds through this afternoon will approach 10KT at times.
/Issued 249 AM EST Fri Nov 26 2021/ Cold front currently moving through the CWA this morning. High pressure will build in from the west later today and remain in place through the remainder of the short term period.
Temperatures will likely drop a few more degrees through sunrise before winds turn southerly behind the high pressure. We have trended toward the drier end of model guidance for dewpoints today (10th percentile NBM) as models tend to increase dewpoints too fast in departing high pressure systems. An inspection of model soundings to the southwest of the area (moisture source region) shows dewpoints in the lower 20s at best. Southwest winds will tend to keep the atmosphere more mixed tonight, therefore most areas should be a solid 10-15 degrees warmer than the previous night. We trended towards the lower end of guidance for dewpoints Saturday however we may need to go lower in future updates. High confidence in model guidance suggests that a weak trough will push through Saturday evening.
Today Through Saturday Night Cooler and much drier air has settled across the Natural State early this Fri morning after the rain and associated cold front has moved SE of AR. Lows by sunrise this Fri morning will drop down into the low 20s to mid 30s. These light SE winds will allow for temps to be a bit warmer by Sat morning.
However, temperatures should rebound quickly today as high pressure shifts south of the area and southerly flow increases. Saturday, a dry cold front will move through the area during the day however, with a lack of cold air behind the front temperatures will still reach the mid 50s to lower 60s with strong mixing.
(Today and tonight) A closed upper low currently over the northern Baja region will lift northeast towards the area today, reaching southwest Texas by early Saturday morning. Temperatures will be warmer today, with light southwesterly winds and afternoon highs in the low to mid 60s. Lows tonight will be in the lower to middle 40s.
241 AM PST Fri Nov 26 2021 High pressure will control the weather across our area. Today and Tonight: High pressure will center over the Great Basin as surface ridging prevails across our area. Overnight lows will generally be a few degrees warmer overall; mostly in the 40s to lower 50s. Saturday through Friday: Stout upper ridging will prevail from CA and the adjacent Pacific waters into the Great Basin.
741 AM EST Fri Nov 26 2021 Rain is transitioning to snow showers early this morning in the wake of a cold front. Light snow is likely for areas north of I-80 and in the higher terrain.
Dry and warmer weather conditions are forecast to prevail through the weekend. Overnight temperatures have been 5-15 degrees warmer in the areas with a frost advisory. The high level clouds that has been hindering the longwave cooling should thin out and exit to the southeast. Dry and warmer weather conditions are forecast today through the weekend for much of the area.
High pressure stretched from eastern Iowa southwestward into the southern High Plains early this morning. Cold high pressure across the area will slowly shift eastward through 00 UTC Saturday resulting light winds becoming southerly through the day and pulling relatively warmer air northward into the area. Expecting high temperatures today to be in the 30s with the exception of far southeast Iowa and northeast Missouri will be in the lower 50s. Low temperatures will be noticeably warmer Saturday marooning and range from the mid 20s to lower 30s. Discussion: A SW CONUS ridge will build into the SW US through the period as NW flow is expected to continue across our area. The ridging is close enough to us that we see quiet weather and temperatures in the 50s again, especially the first few days of December.
Highs today will struggle to rise above freezing with lows tonight dropping down into the 20s. The center of the low track will be close to the Michigan border with the best chances for snow north of the low track.
BW Chattanooga Airport, TN 46 28 56 37 56 / 10 0 0 0 0 Knoxville McGhee Tyson Airport, TN 42 25 53 35 54 / 10 0 0 0 0 Oak Ridge, TN 42 25 52 33 53 / 10 0 0 0 0 Tri Cities Airport, TN 40 23 48 31 49 / 10 0 0 0 0.
The closed low over southern Baja, CA will move slowly northeast through Saturday. Also, a back door cold front will reach the northeast late Saturday, and will continue south and west Saturday.
330 AM CST Fri Nov 26 2021 Today through tonight: the forecast in the near term is straight- forward with polar high pressure building over the lower MS Valley region today and becoming centered over the forecast area by this evening. After a very cool day with high temperatures as much as 15 degrees below climate normals, expect mostly clear skies and very light wind tonight to allow temperatures to dip well below freezing north of the I-20 corridor. Farther south, thicker cirrus may have some impact on cooling and could keep lows from dropping below freezing.
A slight warming trend will occur through the weekend with high pressure moving into the region. EPAC ridge is nosing into the region as a closed low drifts east across nrn Mexico.
Meanwhile, temperatures are trending 5 to 10 degrees cooler than this time last night across the Las Vegas Valley, so it will be a chilly start to the day for any Black Friday shoppers hoping to get an early start on holiday shopping. With high pressure building over the region, just a few high clouds are expected today along with pleasant afternoon temperatures topping out right around normal for late November.
In wake of the cold front that passed through the Tennessee Valley region earlier this evening, strong cold air advection is occurring, with northerly winds gusting around 15-20 mph. Temperatures will struggle to make it above the low to mid 40s by this afternoon, with apparent temperature values likely remaining in the 30s. We'll be under the influence of high pressure at the surface on Saturday, with continued clear and dry conditions.
Much colder across the area this morning as moderate CAA continues behind the cold front that moved through yesterday, with current temperatures in the upper 20s to mid 30s. Nevertheless, NBM guidance appears to be too warm with Saturday morning lows and have undercut them a few degrees, closer to a blend of the NBM 25th to 50th percentile, with lows in the low to mid 20s.
Latest water vapor imagery shows northwesterly flow aloft over the nation's mid-section with ridging to our west and a trough to our east. A ridge axis at the surface will continue to shift east this morning allowing return southerly flow to spread over the area. Continued strong low-level warm air advection should push highs today into the 50s for most areas, with the warmer readings in our southern counties. Slightly cooler temperatures with brisk northwest winds are expected Saturday behind the frontal boundary but highs should still remain in the 50s which is still above normal.
Still expect to see temps fall through sunrise reaching a nadir in the low to mid 20s. Persistent troughing will be located over the eastern third of the CONUS, leaving our area under northwest flow aloft, and dry conditions at the surface.
1430Z temperatures remained in the low and mid 20s. most of the lower clouds streaming across the far northeast sections of the forecast area should shift east into Ohio. Do also expect that temperatures will begin to trend more above normal late week with more substantial southerly flow as a stronger ridge of high pressure builds across Gulf States. Ridge of high pressure moving across Central Indiana will keep quiet and cool weather in place through the TAF period.
Otherwise, near and south of the low track, generally south and west of I-94, confidence is low that lift will be strong enough to saturate sufficiently to produce precip.
This "warm" breeze is expected to lift temperatures into the low to mid 50s.
143 PM CST Fri Nov 26 2021 All is quiet on the homefront thanks to a surface pressure ridge and mid-level subsidence along the backside of an upper-level trough parked over the northeastern United States.
Weak cold front moved southeastward through our Idaho zones overnight and early this morning. After slight cooling today at higher elevations the upper ridge will rebuild Saturday and the higher elevations will warm again.
/DL/ Prior discussion below: Today through tonight: The forecast in the near term is straight- forward with polar high pressure building over the lower MS Valley region today and becoming centered over the forecast area by this evening. After a very cool day with high temperatures as much as 15 degrees below climate normals, expect mostly clear skies and very light wind tonight to allow temperatures to dip well below freezing north of the I-20 corridor. Farther south, thicker cirrus may have some impact on cooling and could keep lows from dropping below freezing.
Western Kansas will remain in between two upper level jets: The primary polar stream to the north which was out of the west-northwest and an upper low tied to the southern stream centered across northern Mexico. The southern stream upper low will move out across Southwest Texas later tonight and Saturday, which will yield widespread precipitation across a fair portion of Texas. This cold front will result in fairly strong north/northeast winds from early morning through at least early afternoon Saturday. Given the downslope trajectories behind this front, there will only be limited low level cold advection, and afternoon highs tomorrow should still be in the lower 60s most locations.
The high will move east across the Ohio Valley tonight into Saturday. As expected, the ridge is beginning to push into the region, leading to clearing sky cover across the tri-state and locations northeast. Weakening winds and the ridge of high pressure provide a cold night across the area with temperatures in the low to mid 20s. Forecast soundings indicates dry air may absorb some of the precipitation as it saturates the lower atmosphere.
100 PM EST Fri Nov 26 2021 Chilly high pressure will build into the area tonight through early Saturday, before moving off the Southeast coast Saturday night.
A ridge axis is currently sweeping through the Florida Keys in advance of a decaying cold front currently sinking southeast across the Florida Panhandle. As this ridge axis moves across the region, winds have generally come down from this morning. The ridge axis will continue to get shoved out of the area as the decaying front continues its southeast trek. Otherwise, winds will back to the northwest int he wake of the front and low temperatures may be a few degrees cooler tomorrow morning.
High pressure over the southwest will keep the storm track well north of the state, with high temperatures seeing a significant warming trend. There will be some daily fluctuations in the strength of the ridge as weak lows develop at times south of the high, but the overall trend continues to be above normal heights for Arizona with little or no impact from these undercutting lows. High temperatures starting Saturday will be 5-15 degrees above seasonal averages, with the valleys of northeast Arizona seeing the lower end of the departures due to inversions and poor mixing. Little change in this pattern is showing up even out to 8-10 days as WPC Clusters show good agreement in ridging persisting over Arizona.
High pressure stretched from eastern Iowa southwestward into the southern High Plains early this morning. Cold high pressure across the area will slowly shift eastward through 00 UTC Saturday resulting light winds becoming southerly through the day and pulling relatively warmer air northward into the area. Expecting high temperatures today to be in the 30s with the exception of far southeast Iowa and northeast Missouri will be in the lower 50s. Low temperatures will be noticeably warmer Saturday morning and range from the mid 20s to lower 30s. Discussion: A SW CONUS ridge will build into the SW US through the period as NW flow is expected to continue across our area. The ridging is close enough to us that we see quiet weather and temperatures in the 50s again, especially the first few days of December.
840 AM PST Fri Nov 26 2021 High pressure will control the weather across our area. Increased high level clouds overnight and lingering weak offshore flow has lead to slightly warmer temperatures. Mostly sunny skies are expected across the region with highs in the 60s and 70s - a few degrees warmer than yesterday. Today and Tonight: High pressure will center over the Great Basin as surface ridging prevails across our area. Overnight lows will generally be a few degrees warmer overall; mostly in the 40s to lower 50s. Saturday through Friday: Stout upper ridging will prevail from CA and the adjacent Pacific waters into the Great Basin. The high pressure affecting the area will continue to keep winds light to moderate and prevent cloud cover from lowering CIGS. KSFO Bridge Approach.
Due to continued weak cold advection overnight cooler temperatures are expected on Saturday.
1241 PM EST Fri Nov 26 2021 A cold front will move east of the region today bringing dry weather and breezy winds. Weak cold advection behind a cold front will keep temperatures relatively cool and skies mostly clear. Temperatures will be below average with general troughiness over the forecast area with highs in the mid-50s in the north to around 60 in the CSRA.
244 PM CST Fri Nov 26 2021 A general warming trend will begin today as ridging begins to build over the Central Great Basin positioning us in prolonged northwest flow.
232 PM EST Fri Nov 26 2021 A cold front will move east of the region today bringing dry weather and breezy winds.
1206 PM CST Fri Nov 26 2021 (Today and tonight) A chilly start to our Friday for much of the area this morning, with temperatures currently sitting near or below freezing for just about the entirety of our CWA as light winds and clear skies have allowed for excellent radiational cooling conditions overnight. Clouds will begin to push in from the south by late afternoon into this evening as a closed low ejects eastward out of northern Mexico.
We are off to a cold start to the morning with current temps in the lower 30s as of 8am. The pressure gradient from the high pressure building across the Lower MS Valley and the wedge front off to our east, winds will stay breezy, gusting from 10 to 15 mph into this afternoon. We'll be under the influence of high pressure at the surface on Saturday, with continued clear and dry conditions.
/Today/ High pressure and nwly flow aloft continue their influence on our weather today. /Today through Saturday/ Post frontal conditions currently prevailing across the Four State Region attm in the wake of a strong cold front that pushed through the region on Thanksgiving Day. High clouds are coming from an active subtropical jet in advance of a closed area of low pressure spinning across Baja California. This feature will begin to lift out in the Texas Hill Country on Saturday but ahead of this feature, sfc ridging will move ovhd today with neutral temperature advection expected. It's this flow and the cirrus that will keep us from bottoming out too cold overnight but we should still see freezing temperatures across our northern and northeastern zones. Stayed pretty close to NBM MOS with highs ranging from near 60 to the lower 60s.
/Updated at 1211 PM CST Fri Nov 26 2021/ Plentiful sunshine exists across all of the Southeast United States early this afternoon following the passage of the cold front during the overnight hours. Temps have warmed a bit more than previously expected here at midday, indicating not as much cold air advection with Central Alabama closer to the center of the ridge.
Thanks to the partial cloud cover and a continued S/SE breeze, low temperatures will be several degrees warmer than last night in the middle to upper 20s.
1125 AM CST Fri Nov 26 2021 (The rest of today ) Forecast is on track with warmer temps and increasing southerly winds this afternoon.
Otherwise the forecast is on track, with the High Wind Warning for the Rocky Mountain Front and Eastern Glacier County continuing until noon today. Am concerned that winds may gust near or slightly above High Wind criteria past the noon expiration and up until 2pm in the Cut Bank area; however, will allow the High Wind Warning to expire at noon as these gusts would be infrequent in nature if they do occur. Zonal flow will persist through early Saturday ahead of weak ridging, generating gusty westerly winds that are expected to continue through Friday.
125 PM MST Fri Nov 26 2021 Temperatures will warm well above the seasonal average beginning this weekend as high pressure builds back into the region. A quasi-rex block pattern continues across the East Pacific and western Conus with expansive ridging and anomalously high H5 heights being undercut by a sheared, positively tilted trough stretching from the southern high plains into the subtropical East Pacific. An overall flow weakness within the base of the high pressure ridge should be maintained such that a generic Rex block pattern will persist and thermal profiles should not grow to extreme levels.
Moisture will be lacking and the low-levels remain quite dry, but enough lift appears to be present with this wave to generate a band of light snow, with accumulations primarily limited to west-central Wisconsin across our area. Temperatures will be a few degrees warmer tomorrow despite continued mostly cloud skies with afternoon highs ranging from the low-mid 30s across western Wisconsin to the low 40s across western Minnesota.
/Tonight through Saturday Night/ The region remains under nwly flow aloft in the wake of the Thanksgiving Day cold front/trof, even as a closed upper low continues to be cut off over the Baja Peninsula. Shwrs will spread ewd/newd into the evening and overnight, as the trof opens and picks up forward speed, with warmer overnight mins in the low to mid 40s.
225 PM CST Fri Nov 26 2021 Forecast going into the overnight hours features a continuation of the repetitive roughly 3 day pattern of late featuring a mild day followed by a cold frontal passage and resultant wind. This next wave glides down in the NW flow aloft tonight pushing a cold front through the area.
Can't rule out some lingering light freezing drizzle late Saturday night as ice-bearing clouds peel away.
237 PM CST Fri Nov 26 2021 Low pressure will develop across the northern Plains and slide southeast overnight and end up in southern Wisconsin by midday Saturday. As it does so, a cold front will move southeast across the area during the day Saturday. A dry and overall mild pattern will persist through the week as any low pressure system remains to the northeast of the area.
1204 PM EST Fri Nov 26 2021 Aviation - Light lake effect snow showers tapering off this morning - Lingering light nw flow lake effect snow showers will gradually taper off later today as upper level ridging begins to build in from the west and h8 temps moderate.
The low cloud deck over NE FL associated with the boundary will shift south and dissipate as high pressure builds in from the northwest. Northwesterly flow will funnel a cool, dry airmass over the area tonight causing temperatures to drop to at or near freezing across inland SE GA and Suwannee Valley, mid/upper 30s in inland NE FL and low 40s along the coast.
910 AM PST Fri Nov 26 2021 High pressure will control the weather across our area. Increased high level clouds overnight and lingering weak offshore flow has lead to slightly warmer temperatures. Mostly sunny skies are expected across the region with highs in the 60s and 70s - a few degrees warmer than yesterday. Today and Tonight: High pressure will center over the Great Basin as surface ridging prevails across our area. Overnight lows will generally be a few degrees warmer overall; mostly in the 40s to lower 50s. Saturday through Friday: Stout upper ridging will prevail from CA and the adjacent Pacific waters into the Great Basin. KSFO Bridge Approach.
Getting closer to the end of the TAF period, around 15-17Z for KDHT/KGUY, winds along a cold front will shift to north-northeasterly and be sustained around 15-20 kts with higher gusts at times.
335 PM EST Fri Nov 26 2021 High pressure and dry air will build into the region tonight through Saturday.
(Saturday through next Friday) Above normal temperatures are expected areawide tomorrow, in advance of a cold front that will move through the area late tomorrow and tomorrow night. Well ahead of the front, showers will increase during the day tomorrow, primarily across parts of Texas, in response to an upper low currently over the Baja lifting to the east-northeast toward the area.
232 PM CST Fri Nov 26 2021 High pressure will drift east of the region tonight and Saturday, allowing for winds to become more southwesterly and temperatures to moderate back into the 50s Saturday afternoon.
High pressure with a dry air mass with northwesterly winds across the region. A cold front working down the peninsula today will move through the region overnight/ early tomorrow morning. Dry and mostly sunny skies to start the weekend with temps a few degrees cooler than today.
Strato-cu cloud cover continues to dissipate across the area with surface ridging building into the southern Appalachians.
High pressure will result in a dry and rather cool day today.
Winds will back more southerly tonight, along with increasing high cloudiness inhibiting the strong radiational cooling and subfreezing temperatures that we had last night. Although relatively warmer tonight, it will still get rather cold with MinT's in the mid to upper 30s across our Oklahoma counties, while south of the Red River our western north Texas counties will fall into the lower 40s. A cutoff low currently spinning over the Baja California Peninsula is expected to get captured tonight by the main upper jet, and start tracking across the Old and New Mexico regions as an open trough, eventually moving across western & northern Texas by Saturday afternoon. Meanwhile, a cold upper level trough moving across the Upper Midwestern U. will be pushing a dry cold front across northern Oklahoma by late Saturday morning and continue moving across our area through the afternoon.