Aikyam-Lab/Synoptic-Bench huggingface dataset:
A Dense Fog Advisory is already in effect for the Eastern Side of the valley along the Highway-99 corridor and may expand south of Porterville later this morning. At this point, ridge expected to dominate the area for much of the forecast period. Short-range high-res ensemble visibility analysis indicates that the Highway-99 corridor has the best chances (30%-60%) of observing dense fog. Will maintain the wording of overnight low just above the freezing mark for Merced, Los Banos and Dos Palos where PoE ranges between 10% and 30%. If humidity trends drier going into the weekend, will have re- evaluate the north valley for any possible freezing.
Temperatures will run between 10 and 20 degrees below normal each day as we remain in the path of a series of dry cold fronts.
High pressure offshore will maintain cool but dry weather across the region into the weekend, though may have a passing shower on Friday.
Cooler air was slowly working into the region, with predawn temps in the 40s and 50s. Mostly clear skies and light winds wl allow low temps to drop below freezing tngt and again Fri ngt.
521 AM CST Thu Nov 28 2024 (Tonight through Friday) Key Messages: - Mostly dry cold frontal passage early this morning, resulting in seasonable temperatures for Thanksgiving. As of 2 AM the cold front was just entering northern portions of our area and this boundary is expected to have more or less pushed through the entire area by sunrise.
In most inland areas, except for the Umpqua basin, temperatures are near or below freezing and this means that we are seeing freezing fog. Will continue to monitor should we need a freezing fog advisory. Stratus and fog (or even freezing fog) could return again tonight. The general thought behind this is that this front would either move more to the north of the area or expend most of its energy breaking down the ridge instead of bringing rainfall to the area. In Medford(MFR), we're expecting 1/4 freezing fog into the early morning hours before things start mixing out. By later tonight, we'll see another round of IFR/LIFR fog and stratus in the valleys as high pressure builds overhead.
Sandwiched between a longwave trough over the eastern US and a building ridge over the PacNW, Colorado will remain under dry northwest flow aloft, making for a beautiful and crisp Thanksgiving. Tonight will be similarly cold and well below freezing for all. There's good agreement now that these will be far enough east to have minimal impact on our weather as we gradually warm under the building ridge.
514 AM CST Thu Nov 28 2024 (Today through Friday) A cold front makes a run for the border this morning, bringing Thanksgiving-like weather to Deep South Texas into the weekend, as low pressure settles along the lower Texas coast. A slightly better chance of rain or drizzle follows tonight through Friday as the coastal trough and stronger CAA set up some overrunning into the lower RGV. Have leaned cooler towards the NAM and NBM25 with highs barely making it into the 60s for most of the RGV.
Temperatures will trend upwards for the next several days, reaching warmer than normal for this weekend. A ridge will slowly build into the state from the west today.
Temperatures are in the lower 70s across most of the Keys with light NE winds, but have risen into the mid 70s across parts of the Upper Keys where ESE breezes have pushed in during the last couple of hours. Surface analysis depicts weak high pressure over the western Atlantic, with a cold front draped from the central Appalachians across the Lower Mississippi Valley and South Texas. Aloft, the lower to mid level ridge axis remains over the Keys, extending from the SW Atlantic to the western Gulf. Guidance remains on track with a couple of fronts expected to move through the Keys this weekend, in response to a gradually deepening upper trough over the eastern CONUS.
558 AM CST Thu Nov 28 2024 - Cool today, with highs in the lower to middle 40s throughout the area. At the surface, high pressure has built in over the High Plains as light northerly flow dominates the scene over Kansas. These will keep wind chills early this morning in the upper teens and low 20s before diurnal heating results in daytime highs in the lower and middle 40s this afternoon.
524 AM CST Thu Nov 28 2024 - Temperatures will be much cooler today into Friday.
506 AM CST Thu Nov 28 2024 (Today) A cold front is moving through the area early this morning, and light to moderate rainfall can be seen ahead of this front in northeast AL.
High pressure will bring quiet and dry weather to the forecast area with colder temperatures expected through the weekend. Daytime highs will be in the low to mid 30s with overnight lows in the single digits to teens. Heading into Friday, a ridge of high pressure will build over Nevada, bringing daytime highs into the low to mid 40s across northern and central parts of the state.
(Today and tonight) High pressure continues to build over the West Coast with cooler mornings and drier conditions on tap for the next few days. Widespread near freezing temperatures are expected within the Frost Advisory with locations in southern Monterey County and the North Bay Valleys potentially seeing temperatures as low as 30 degrees. Daytime highs will peak in the low to mid 60s throughout the interior and upper 50s to low 60s along the coast. Cooler temperatures return again Thursday night with another Frost Advisory set to go into effect at 10 PM Thursday through 9 AM Friday.
Southwesterly winds prevail today ahead of approaching cold front towards the end of the period. Highs will climb into the low 80s today. The highest chances will be north of the I-4 and most of us will likely just get a few showers. Then, a cold front moves through the Eastern Gulf waters on Friday, bringing a chance for showers.
702 AM EST Thu Nov 28 2024 (Today through Friday) Models and sfc analyses depict broad high pressure centered over the Western Atlantic and dominating the synoptic weather pattern across the region. SoFlo remains on the western edge of the high with mid-upper ridging keeping a relatively stable air mass in place today. The weak winds will allow for afternoon temperatures to climb back into the lower or mid 80s each day.
(Today through Friday) Most if not all support for severe storms associated with this cold front will be lifting north as the adjoining low pulls out today. The high temp for everyone will be just before the front moves past your location.
547 AM CST Thu Nov 28 2024 (Today through Friday) The mid to upper level flow over Texas has become slightly cyclonic this morning with a very broad trough over the entire country. This trough has brought a cold front through our CWA which now stretches across our southern counties from Lavaca to Atascosa to Maverick. A cooler, drier airmass behind the front is just entering our northern counties. The breezy, gusty northerly winds will continue today bringing cooler, drier air. High temperatures today will be about 15 degrees cooler than yesterday. Cold air advection will continue tonight and low temperatures will be around ten degrees cooler than this morning's lows.
(Today through Friday) A cold front makes a run for the border this morning, bringing Thanksgiving-like weather to Deep South Texas into the weekend, as low pressure settles along the lower Texas coast. A slightly better chance of rain or drizzle follows tonight through Friday as the coastal trough and stronger CAA set up some overrunning into the lower RGV. Have leaned cooler towards the NAM and NBM25 with highs barely making it into the 60s for most of the RGV.
444 AM CST Thu Nov 28 2024 (Today through Friday) In the very early morning hours this Thanksgiving, showers associated with a low pressure system and cold front were moving across Middle Tennessee. By daybreak, the low center will be over West Virginia, and the trailing cold front will have moved completely through the Mid State. Cold and dry high pressure will be pushing into the area tonight through Friday.
537 AM CST Thu Nov 28 2024 Today and Tonight: Latest surface analysis had a cold front from Meridian back to the southwest across Natchez. Local radars showed a narrow broken line of storms along the cold front. The cold front will continue to progress to the southeast and clear our southeast most zones shortly after sunrise. Temperatures over our southeast were still running in the lower 70s. This will continue to bring in a much drier and cooler airmass to our region. Temperatures tonight across our northern zones will bottom out near or just below freezing and winds will be light enough to allow for frost development.
522 AM CST Thu Nov 28 2024 (Today through Friday) The cold front will continue to push south and east through the morning, before exiting the area by Noon. Ahead of the front, temperatures continue increase as the warm front slides through due to the dynamic lift of the developing system. Friday will a cool day with temperatures in the 40s north to mid 50s southeast as high pressure builds over the area.
A weak, dry cold front will drop south across the Plains late this morning into early afternoon, helping to keep temperatures on the cool side. Temperatures will range from the mid 30s to lower 40s, with the warmest temperatures across the lower Arkansas River Valley and near the Kansas border.
(Today and tonight) High pressure continues to build over the West Coast with cooler mornings and drier conditions on tap for the next few days. Widespread near freezing temperatures are expected within the Frost Advisory with locations in southern Monterey County and the North Bay Valleys potentially seeing temperatures as low as 30 degrees. Daytime highs will peak in the low to mid 60s throughout the interior and upper 50s to low 60s along the coast.
Building high pressure across the Great Basin will enforce a north to south pressure gradient which will encourage gusty north winds throughout the Colorado River Valley, and the Lake Wind Advisory continues to look good today.
Clouds will continue to exit the region later this afternoon as high pressure continues to build in. Temperatures will run between 10 and 20 degrees below normal each day as we remain in the path of a series of dry cold fronts.
1107 AM CST Thu Nov 28 2024 (Today through Friday) The cold front will continue to push south and east through the morning, before exiting the area by Noon. Ahead of the front, temperatures continue increase as the warm front slides through due to the dynamic lift of the developing system. Friday will a cool day with temperatures in the 40s north to mid 50s southeast as high pressure builds over the area.
With a dry air mass in place, expect dry and pleasant conditions for any outdoor festivities on this Thanksgiving Day! High temperatures are expected in the low to mid 80s. As we move into Friday, elongated troughing will establish itself across the eastern seaboard with an attendant surface cold frontal boundary advecting southwards into the central Florida Peninsula. Therefore, mostly dry and pleasant weather will continue through Friday with only isolated chances for a few showers in the evening along the northern edges of the CWA as the boundary approaches and provides some level of lift (albeit weak given the broad nature of the trough). High temperatures are again expected in the low to mid 80s for Friday.
(Rest of today through Friday) Happy Thanksgiving! Obs this morning show that the cold front has completely moved through Middle TN with current temperatures chilly in the mid-40s. (Friday Night through next Thursday) Even colder mornings are ahead as low temperatures Friday night fall into the low and mid-20s.
A mid/upper trough was situated north of the Great Lakes area while northwest mid/upper flow was present over much of the central CONUS. At the surface, a ridge of high pressure was impacting the Central Plains bringing cool weather but light winds and mostly sunny conditions for much of Kansas. Robust radiational cooling is anticipated tonight as high pressure settles over the Flint Hills and minimum temperatures were trended downward slightly. Southerly winds will return from west to east as high pressure settles over the Mississippi Valley area and an area of low pressure deepens across the Central High Plains. This will bring a wide range of temperatures to the area on Friday with highs ranging from the lower 50s in Harper county to the lower 40s in parts of central and eastern Kansas.
- Much cooler weather is expected today (Thanksgiving Day).
Temperatures will trend upwards for the next several days, reaching warmer than normal for this weekend. Temps today with the offshore flow and some developing upper level ridging will be several degrees above normal for many areas. Counties should reach the low to mid 70s. However, it should still be cool over the northern SLO County interior vlys with highs only around 60 thanks to cooler easterly flow into this area from the southern San Joaquin Vly.
High pressure is strengthening and will dominate the weather pattern through this near term period. As is usual with high pressure and no instability, wind will continue light, not playing a factor, save that the lack of it aids fog development.
High pressure will build across the region today, bringing warmer temperatures, light winds, and mostly dry conditions for the foreseeable future. Happy Thanksgiving from NWS Flagstaff! In the wake of yesterday's cold front passage, we're seeing upslope low clouds lingering across the Little Colorado River Valley and north side of the Mogollon Rim/White Mountains. An area of high pressure will begin to build across the Southwest through the next several days. This ridge will stick around through the weekend and into the first part of next, before a rex block pattern sets up. Even with the pending rex block pattern, moisture seems little to none from the forecast closed low off the southern coast of California.
High pressure ridges across south Florida producing rain-free conditions, light south-southwest winds and seasonal temperatures across west central and southwest Florida today. Farther to the north, an area of low pressure over the mid-Atlantic states moves northeastward toward New England. The associated cold front extends southward along the eastern seaboard, through Georgia and then further westward to Texas. By Friday morning, the high pressure weakens and moves southward as the cold front moves through Florida.
High pressure will bring quiet and dry weather to the forecast area with colder temperatures expected through the weekend.
The weather pattern remains similar through this weekend, with northwest flow aloft in response to a building ridge over the far western US. A warming trend also occurs as the ridge builds east a bit.
The low has quickly headed eastward, now over the Upstate of South Carolina, with the front trailing SW across coastal Louisiana. High pressure building in from the NW will become the primary item controlling this region's sensible weather, but the large area of lower level moisture will be slow to clear the area.
151 PM EST Thu Nov 28 2024 Cold air arrives tonight behind a departing cold front. Key Messages: 1) Cold front will move east this afternoon. A quick moving cold front is in the process of crossing the area this afternoon.
Updated at 218 PM CST Thu Nov 28 2024 - A Freeze Warning is in effect from late tonight through Friday morning for the Central and Eastern Permian Basin into portions of the Lower Trans Pecos. However model guidance suggests that a quick moving upper disturbance will bring in drier air aloft that will clear skies and should send temperatures below freezing in several areas that have not seen subfreezing temps yet. These southerly winds won't be reflected in afternoon highs but lows tomorrow night begin to edge upward again and should be above freezing everywhere.
1142 AM CST Thu Nov 28 2024 (Today through Friday) A cold front makes a run for the border this morning, bringing Thanksgiving-like weather to Deep South Texas into the weekend, as low pressure settles along the lower Texas coast. A slightly better chance of rain or drizzle follows tonight through Friday as the coastal trough and stronger CAA set up some overrunning into the lower RGV. Have leaned cooler towards the NAM and NBM25 with highs barely making it into the 60s for most of the RGV.
1123 AM CST Thu Nov 28 2024 - Cool today, with highs in the lower to middle 40s throughout the area. At the surface, high pressure has built in over the High Plains as light northerly flow dominates the scene over Kansas. These will keep wind chills early this morning in the upper teens and low 20s before diurnal heating results in daytime highs in the lower and middle 40s this afternoon.
Updated at 206 PM CST Thu Nov 28 2024 - Below freezing temperatures Friday morning, with below-average temperatures persisting through the weekend. With the high over the area, light winds are expected tonight. Temperatures are expected to fall below freezing across the area by Friday morning with lows ranging from the mid 20s in northern OK to around 30 near and south of the Red River.
(This evening through Friday Night) Cold and quiet weather is expected for the short-term, as the main trough axis begins to move through the region tonight.
1118 AM CST Thu Nov 28 2024 (Today through Friday) The mid to upper level flow over Texas has become slightly cyclonic this morning with a very broad trough over the entire country. This trough has brought a cold front through our CWA which now stretches across our southern counties from Lavaca to Atascosa to Maverick. A cooler, drier airmass behind the front is just entering our northern counties. The breezy, gusty northerly winds will continue today bringing cooler, drier air. High temperatures today will be about 15 degrees cooler than yesterday. Cold air advection will continue tonight and low temperatures will be around ten degrees cooler than this morning's lows.
1200 PM CST Thu Nov 28 2024 (Tonight through Friday) Key Messages: - Mostly dry cold frontal passage early this morning, resulting in seasonable temperatures for Thanksgiving. As of 2 AM the cold front was just entering northern portions of our area and this boundary is expected to have more or less pushed through the entire area by sunrise.
1131 AM CST Thu Nov 28 2024 (18Z TAFS) The cold front will push south of the coast in the next hour or two. 34/JFB Happy Thanksgiving everybody! The cold front is steadily progressing through the area and is now pushing east of the I-65 corridor. Much cooler air will filter in behind the front and locations north of the front have already seen their highs for the day.
A deep and broad longwave trough will be in place across the central U.
1127 AM CST Thu Nov 28 2024 (Today through Friday) Most if not all support for severe storms associated with this cold front will be lifting north as the adjoining low pulls out today. The high temp for everyone will be just before the front moves past your location.
Synoptically, narrow surface ridging conditions over the Florida Peninsula with broad upper troughing across the eastern half of the nation. Weak 925-700 mb troughing lurks to the southeast of Andros Island this morning, but with lower tropospheric ridging to our west, not expecting much if any progress towards the Keys. Light northwest breezes will become established throughout the coastal waters Friday, ahead of a weak cold front that will ease through the area Friday night.
1123 AM CST Thu Nov 28 2024 - Temperatures will be much cooler today into Friday.
pdf Cold front is currently moving into inland SE GA, and will move southeast across forecast area through the night.
Bright sunshine dominated the Florida Keys skies this afternoon with GOES visible imagery showing trapped stratocumulus from earlier analyzed lower tropospheric troughing and weak isentropic lift remaining well offshore the Upper Keys. Temperatures were generally near 80 to the lower 80s, with dewpoints within a couple degrees of 70F. Weak, fractured surfacing ridging across the Florida Peninsula in the wake of this afternoon's heating may only manage to repair itself by Friday morning in time to impart weak north to northeast flow.
245 PM CST Thu Nov 28 2024 Happy Thanksgiving! The remainder of today will remain cool and breezy in the wake of an upper system that brought a cold frontal boundary through the CWA. By this afternoon into the evening, temperatures are expected to drop into the lower 50s to upper 40s. This will allow for efficient cooling along and north of the Hwy 82 corridor overnight, decreasing temperatures to below freezing. Elsewhere, cloud cover will prevent lows from dipping below freezing overnight. 0 inch across the Lower MS River Valley. Despite sunny skies, temperatures will remain in the lower to upper 50s, which will call for a brisk day across the region on Friday.
Under the influence of an upper level trough, colder air along with some synoptic lift via positive vorticity advection will swing through the area late tonight into early Friday morning.
we are expected to remain dry under high pressure for at least the next 7 to 10 days. In most inland areas, except for the Umpqua basin, temperatures are near or below freezing and this means that we are seeing freezing fog. Will continue to monitor should we need a freezing fog advisory. Stratus and fog (or even freezing fog) could return again tonight. The general thought behind this is that this front would either move more to the north of the area or expend most of its energy breaking down the ridge instead of bringing rainfall to the area.
The cold front has mostly cleared through our southeast region, leaving temperatures in the upper 40s to low 60s prevailing across the ArkLaMiss region this morning. /AJ/ Today and Tonight: Latest surface analysis had a cold front from Meridian back to the southwest across Natchez. Local radars showed a narrow broken line of storms along the cold front. The cold front will continue to progress to the southeast and clear our southeast most zones shortly after sunrise. Temperatures over our southeast were still running in the lower 70s. This will continue to bring in a much drier and cooler airmass to our region. Temperatures tonight across our northern zones will bottom out near or just below freezing and winds will be light enough to allow for frost development.
Meanwhile, dry conditions can be expected areawide with a gradual warming trend beginning in the higher elevations Friday and in the lower elevations over the weekend. High clouds will overspread the region and thicken through tomorrow, but this will not stop temperatures from being a few degrees warmer tomorrow than today at the higher elevations as heights rise aloft.
Low confidence with any specifics given potential deviations on the track of the lows. Temperatures peaked in the low to mid 20s today under the overcast skies. Clouds will begin to clear Friday as our Arctic high pressure settles in across the Upper Midwest. This stretch of early season cold will continue through the Thanksgiving holiday weekend as the Arctic high pressure is slow to exit.
245 PM EST Thu Nov 28 2024 A cold front will move offshore this evening.
On Friday, high plains lee troughing will resume across Colorado. Southerly winds in the 5 to 15 mph range are expected as the lee trough deepens across Colorado.
1245 PM EST Thu Nov 28 2024 A strong cold front will move through the area today with showers and scattered thunderstorms. - Gusty winds continue through the early evening hours ahead of a potent cold front. This should be the end of the rain threat for today though the actual cold front remains to our north and west. Key Message(s): - Much cooler air moves into the region to begin the weekend. Deep upper trough is forecast to be in place over the region by Friday morning and expected to remain overhead through the entire short term period. Along with the high pressure, much colder air gets filtered into the area.