Aikyam-Lab/Synoptic-Bench huggingface dataset:
347 AM EST Wed Nov 24 2021 A potent high pressure centered over the mid Atlantic states is promoting fresh north to northeasterly breezes over the Keys and local waters. The northerly winds are driving a dry and cooler air mass into the region, and overnight temperatures fell to the mid 60s, and dewpoints were near the low to mid 50s area wide. Temperatures are expected to slowly warm to the low to mid 70s this afternoon.
(Today) Another windy day is on tap for eastern Oklahoma and western Arkansas today in advance of a cold front that is set to move through the area tonight.
Temperatures have fallen back into the lows 30s and there will likely be some mid to upper 20s east of I-65 by sunrise. These warmer temperatures are likely to be more prevalent across our southwest counties. 50", with the higher totals in the northwest.
1232 AM EST Wed Nov 24 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.
-Gusty winds through the night -Cool for Thanksgiving Day -Dry and mild weather to follow As of 2 PM CST, an upper-level trough axis is currently situated over the 4-corners region of the US and is continuing to move east. An associated lee surface cyclone is developing over SE Colorado helping to create a tight pressure gradient across much of the central US. As a result, surface dew points have remained in the low to mid 30s for the duration of the day.
/Tonight/ The evening satellite imagery indicates areas of cirrus continuing to increase from the WNW, ahead of a developing longwave trough entering the Rockies and absorbing the Srn stream trough over the Desert SW into Cntrl Baja and the SE Pacific. This cirrus shield will gradually thicken overnight as the flow becomes more SW ahead of this trough, with a Srly low level flow increasing over the Srn Plains ahead of a developing cold front over Wrn KS/Ern CO.
300 AM EST Wed Nov 24 2021 Discussion/Marine - Becoming fairly windy later today - Southerly winds will gradually ramp up today as a result of a strengthening pressure gradient between the high pressure ridge over the southeastern CONUS and the low pressure system over the upper midwest. A consensus of latest high res short term guidance suggests the highest gusts will occur from near KMKG northward along the coast where some gusts to around 40 mph are possible. - Rain to light lake effect snow showers for Thanksgiving - The approaching cold front will bring rain showers late Wednesday night through midday Thursday.
Surface temperatures are not as cold as 24 hours ago, but still rather chilly with readings varying from the upper 20s to the lower 30s. A few of our typical colder spots were in the low-mid 20s. For today, we'll be on the back side of a departing high pressure system. For tonight, cloud cover will increase and clouds will lower throughout the night as a cold front pushes into the region from the west. A rainy day is in store for the holiday as an upper trough pushes a cold front through the region. Though the day will be breezy at times with SW gusts in the 20-25mph range, stable lapse rates in the lower levels will likely keep the stronger winds aloft.
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. Skies will clear Thanksgiving night as high pressure returns to the region.
232 AM EST Wed Nov 24 2021 Cold and dry Canadian high pressure will hold temperatures below normal through Thursday.
153 AM EST Wed Nov 24 2021 Southerly flow ahead of the next system will make for warmer conditions today. Another cold front with rain can be expected on Thanksgiving. High pressure in place over the central Appalachians will slowly be retreating to the east ahead of the next system approaching. The slow retreat is expected to weaken the approaching cold front. Low pressure over the upper Great Lakes will dig sewd toward the Ohio valley on Thursday. The cold front associated with this low pressure system will slow and begin to shear out a bit as it moves through the area on Thursday into Thursday night.
Cigs should begin to gradually lower late in the TAF period and just after 06Z Thursday over portions of NE TX/SE OK, ahead of a approaching cold front. /Tonight/ The evening satellite imagery indicates areas of cirrus continuing to increase from the WNW, ahead of a developing longwave trough entering the Rockies and absorbing the Srn stream trough over the Desert SW into Cntrl Baja and the SE Pacific. This cirrus shield will gradually thicken overnight as the flow becomes more SW ahead of this trough, with a Srly low level flow increasing over the Srn Plains ahead of a developing cold front over Wrn KS/Ern CO.
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. Temperatures are on track to bottom out in the 30s across most of the area with the eastern half of the CWA flirting with the freezing mark. 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. A cold front will push through the region on Thursday.
1026 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.
252 AM CST Wed Nov 24 2021 Increasing high cloudiness today will herald the arrival of a strong cold front early Thursday morning. Mixing down of these winds aloft will be fair to poor due to the low sun angle this time of year, as well as the increase in clouds. Rain will overspread southeast Missouri around midnight tonight, and then much of the lower Ohio Valley after midnight. There will likely be some convective elements within the rain band, which will be focused along the low-level jet. The back edge of the rain will quickly follow the cold front eastward across the lower Ohio Valley on Thanksgiving.
VFR conditions will prevail through the taf cycle as high pressure shifts east late in the morning hours favoring light sly/swly flow at all sites amidst a few high cirrus clouds. CDG Chattanooga Airport, TN 56 35 60 33 48 / 0 0 30 50 0 Knoxville McGhee Tyson Airport, TN 56 33 58 32 44 / 0 0 30 70 0 Oak Ridge, TN 54 34 56 30 44 / 0 0 40 70 0 Tri Cities Airport, TN 53 30 56 31 40 / 0 0 20 70 10.
A positively tilted longwave trof advances across the western states and into the eastern half of the CONUS through Thursday, and in the process cuts off an upper low over the Baja area. Lows tonight mainly range from the lower 30s well inland to the upper 30s at the coast, and a light freeze will be possible mainly well inland which has already received a Freeze Warning earlier. Highs on Wednesday range from the lower 60s well inland to the mid 60s elsewhere, including upper 60s over portions of southeast Mississippi.
Today Through Thursday Night Temps are several deg warmer early this Wed morning compared to Tue morning due to the increased winds seen for most areas. a cold front to the NW of AR will move towards AR. The drier and cooler air will move into the state by Thu night behind the departing cold front.
VFR conditions should prevail across the RGV the rest of tonight into Wednesday before low to mid level moisture increases across the area Wednesday ahead of a 500mb trough moving eastward across the western United States. 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.
Lows will be in the lower-40s in Lake and interior Volusia counties, mid to upper-40s through the rest of the interior, lower-50s along the Volusia and Brevard coasts, and upper-50s along the Treasure Coast.
1039 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 lasting through Wednesday morning. A cold front will move through the TAF sites around 00-01Z on Wednesday evening shifting gusty winds to the north. /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.
Thanksgiving morning may see a mix of rain and snow for some spots, before warmer temperatures drive snow levels up into the weekend. Showers occurring in the cold conditionally unstable airmass contained in the trof left in the wake of yesterday's departing frontal zone have diminished considerably with some minor activity still flirting with portions of the Cascade Crest and to the east over parts of Shoshone County but the activity is way less intense and continuing to decrease.
Models continue to be in good agreement with a longwave trough to move upstream of the southern Plains later today. A cold front is forecast to move into the area starting around noon in parts of northwest Oklahoma.
1051 PM EST Tue Nov 23 2021 Currently - A large and strong high pressure system centered over the mid Atlantic states is producing fresh north to northeasterly breezes across the Keys and surrounding waters. Temperatures are now in the mid 60s with dew points in the lower to mid 50s. However, cool air draining off of the mainland will hold the thickness through the lowest layers steady as the Florida Bay cools further. Expect overnight lows to fall broadly in the lower to mid 60s with dew points holding in the lower to mid 60s. A strong high pressure system will slide east southeastwards, becoming centered near the mid Atlantic coast by morning.
1258 AM EST Wed Nov 24 2021 Cold and dry Canadian high pressure will hold temperatures well below normal through early Thursday.
In addition to the normal diurnal trend, there is also a cold front approaching the area from the northwest. Highs will be about 5 to 10 degrees cooler than normal.
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. Afternoon highs will only reach the low 30s in western Iowa, and just under 40 across eastern Nebraska, as the quick hitting trough swings through.
400 AM EST Wed Nov 24 2021 Cold Canadian high pressure will remain over the area through tonight. The high will shift south on Thursday as a cold front approaches from the west.
1017 PM EST Tue Nov 23 2021 High pressure will move overhead overnight. A cold front will bring some showers into western PA late Thursday afternoon and evening. Mostly sunny but cold day in store as ridge axis moves only a little to the east. Focus then shifts to a low pressure system digging from Ontario into the Ohio Valley Thanksgiving Day into the weekend.
126 AM CST Wed Nov 24 2021 High pressure at the surface through 850 mb was shifting east through the Appalachians this morning. Lows tonight will be cooler in our eastern valleys tonight where decoupling of the boundary layer may temporarily occur. Lows will be in the middle 30s east to the lower 40s west. A narrow theta-E/moisture ridge will aid showers along the front which will make steady progress through Thanksgiving Day.
1031 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. Synoptically, troughing will push out of the region by early to mid morning and ridging will begin to materialize over the western US. This high pressure and ridging will start advecting drier air over Colorado. Temperatures will also be seasonable for this time of year, given they have not had time to modify and warm yet under the developing ridge of high pressure.
252 AM EST Wed Nov 24 2021 High pressure is currently centered across the southern Mid Atlantic states. The high center will get shoved southward through the short term period as low pressure moves into the Great Lakes. A cold front extending from the low will begin to push into the Lower Mississippi River Valley by mid Thursday and begin approaching the NW corner of GA by the end of the short term period.
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. Above to well-above normal temperatures will be occurring across our region as the larger hemispheric scale pattern will remain essentially unchanged with a mean trough in the northeastern CONUS and a mean ridge across the western half of the CONUS.
Temperatures in the low and middle 40s Wednesday morning will be balmy for late November and for Des Moines a record high minimum temperature. However, this record will not be broken as temperatures just before midnight tomorrow night will be closer to freezing. BUFKIT forecast soundings show that the boundary layer will remain mixed in the cold air advection regime behind the cold front.
/Issued 252 AM EST Wed Nov 24 2021/ High pressure is currently centered across the southern Mid Atlantic states. The high center will get shoved southward through the short term period as low pressure moves into the Great Lakes. A cold front extending from the low will begin to push into the Lower Mississippi River Valley by mid Thursday and begin approaching the NW corner of GA by the end of the short term period.
Expecting another mild day for areas ahead of the front, (mainly east of the KS Turnpike) as compressional heating leads to max temperatures again into the lower to middle 60s, with slowly falling temperatures expected by this afternoon across central KS. Expect minimal travel concerns for the Thanksgiving holiday, as a ridge of high pressure builds into the region, with near seasonal temperatures, after a chilly morning for Thu morning.
550 AM EST Wed Nov 24 2021 Cold and dry Canadian high pressure will hold temperatures below normal through Thursday.
a cold front will drop SE into the state. Today Through Thursday Night Temps are several deg warmer early this Wed morning compared to Tue morning due to the increased winds seen for most areas. a cold front to the NW of AR will move towards AR. The drier and cooler air will move into the state by Thu night behind the departing cold front.
Temperatures range from the mid 30s along the TN River and in the MO Bootheel, to the low 40s in AR, northwest MS and southwest TN. As for today, southerly flow continues to increase out ahead of a deepening trough digging in over the western CONUS. The aforementioned trough shifts ESE. As it does an associated cold front should be draped across the plains from MN, southwest through the TX Panhandle. The southern branch of the cold front phases into a closed off low over the Baja Peninsula. The northern branch of the cold front is what will bring us rain for the Thanksgiving holiday. The cold front approaches the area late tonight, bringing showers and a few elevated thunderstorms to NE AR and the MO Bootheel. Cool and dry conditions will exist behind the front as high pressure quickly sets in.
A low pressure system will produce cooler temperatures for the middle of this week. Under building high pressure in the wake of the weak frontal passage, fog is once again forming in the San Joaquin Valley and stratus clouds are piling up along the south end of the SJV.
Satellite confirms model data that high clouds will be in place much of the day which will limit daytime high temps some, but still warmer than yesterday with little change across wrn 1/3 or so of CWFA. The cold front will just start to arrive in far nw- n CWFA between 05Z-06Z/Thur and near I-10 by 10Z/Thur.
Meanwhile, west of said line, temperatures have already fallen into the upper 20s to mid 30s as a cold front makes its presence felt, sweeping through northern and western MN already this morning. This cold front will continue pressing eastward through the day today, resulting in a wind shift to NW and an increase in wind speeds due to a tightening pressure gradient on the backside of the front and ahead of incoming high pressure. Although plenty of sunshine is expected for Thanksgiving due to incoming Canadian high pressure, temperatures will be much colder as highs go no higher than the mid 20s with noticeably lighter winds.
For Thanksgiving Day, high pressure builds back in bringing clear skies to the region.
High pressure at the surface through 850 mb was shifting east through the Appalachians this morning. Lows tonight will be cooler in our eastern valleys tonight where decoupling of the boundary layer may temporarily occur. Lows will be in the middle 30s east to the lower 40s west. A narrow theta-E/moisture ridge will aid showers along the front which will make steady progress through Thanksgiving Day.
852 AM EST Wed Nov 24 2021 Cold and dry Canadian high pressure will hold temperatures below normal through Thursday.
While not a given for sure, patchy freezing fog is possible within the Stanley Basin. For Tonight and Thanksgiving, high pressure will begin to build across the western U. It will be dry with some freezing fog and stratus possible across the Snake Plain/Magic Valley, southeast highlands and along the Montana Divide. That area may see the "worst" of any freezing fog and low clouds thanks to southerly flow banking it against the mountains and across Island Park. It will be breezy at times closer to ridgetop and along the southern fringe of the Snake Plain and Magic Valley. Tomorrow will be warmer, although with lingering low clouds/fog across the northern Snake Plain.
Therefore, some of the fog will be of the freezing variety and surfaces could be slick. The fog is the result of a stable pattern with a very strong ridge of high pressure building into the western U. Temperatures are always a challenge in the fall to winter transition under ridges. We've steered the forecast with the NBM, however corrections in the valleys were made with the statistical NAM and Euro bulletins, which appear to have a better handle on cooler highs and lows under the inversion.
Thanksgiving morning may see a mix of rain and snow for some spots, before warmer temperatures drive snow levels up into the weekend. Today and tonight: A shallow ridge will be over the region today leading to a generally pleasant but chilly day. Patchy freezing fog is also expected through mid morning. Highs are expected to climb into the low 40s and mid 30s. Another round of freezing fog and cold temps expected overnight with lows again in the 20s to low 30s. A trough pattern will begin to press into the region by mid morning and bring increasing upper level clouds and possible shower activity along the Cascades. The shower activity will slowly spread across the Inland Northwest as a warm front passes.
A surface cold front will result in northerly winds after sunset tonight. /issued 343 AM CST Wed Nov 24 2021/ Another day of warm temperatures out ahead of a surface cold front that will push south through the Texas Panhandle this afternoon arriving in our northern zones by late this afternoon and eventually reaching the I20 corridor by midnight. Model guidance the past few days has been steadily trending drier as the positively tilted upper level trough pushes east and south over the next 24 hours. Tonights overnight lows will mostly be in the low to mid 30s on the Caprock and upper 30 to low 40s to the east across the Rolling Plains with breezy northerly winds persisting behind the front overnight into tomorrow. A cold front will be well south of the FA by sunrise tomorrow morning.
Southwest winds will turn to the northeast today at all three sites as a cold front passes through. The higher wind speeds will be more at DHT/GUY than AMA. Models are still showing the cold front coming into the Oklahoma Panhandle this morning and be halfway through the Panhandles around Noon. Breezy north northeast winds are expected to follow in behind the frontal passage, along with cooler temperatures. Temperatures tonight will drop to near or below freezing with areas across the north dipping into the 20s by tomorrow morning.
413 AM EST Wed Nov 24 2021 High pressure building into the region will result in a sunny but somewhat chilly day across the region. This high pressure moves offshore with a cold frontal passage Thursday night bringing our next chance of rain and snow showers. A sunny but somewhat chilly day under high pressure. Although we have a cold start this morning plenty of sunshine and weak southerly/southwesterly flow should get most locations into the lower 40's for highs today. High clouds slowly increase tonight and Thursday ahead of an approaching cold front. Rain showers are likely for most of the region Thursday night as a strong cold front approaches the region. Overnight lows will be around freezing.
Will become sunny with lighter winds as flat ridging begins to push onshore. Much cooler with highs in the mid 30s to mid 40s. Dry and warmer on Thursday as ridge begins to build overhead. Will begin to see an increase of high level moisture and cirrus clouds across northern Nevada Thanksgiving night as ridge flattens slightly. This will likely allow for warmer nighttime temps with lows in the 20s to lower 30s.
Clear skies and dry air are allowing for strong radiative cooling behind yesterdays cold front. Temperatures will be quite chilly to start the day with most areas dropping into the low 20s this morning, and a few cold valleys potentially dropping into the single digits. Otherwise expect light winds today and tomorrow with an increase in high clouds on Thursday as the ridge of high pressure begins to flatten out.
345 AM MST Wed Nov 24 2021 Lingering light snow will exit to the southeast this morning before high pressure settles across the region, bringing dry weather conditions this afternoon. Look for milder and drier weather conditions for Thanksgiving and extending into the upcoming weekend with upper ridging across the area.