Aikyam-Lab/Synoptic-Bench huggingface dataset:
Gusty westerly winds and cold temperatures prevail in the wake of a cold front this afternoon. Skies will start off clear overnight and winds will gradually slacken as the boundary layer decouples and high pressure approaches from the west. Despite the southerly flow and slightly warmer low-level temps, highs tomorrow will likely only get into the mid 40s for most spots with filtered sunshine from high to mid level clouds.
522 PM CST Wed Nov 30 2022 (This afternoon through Thursday night) Last night's cold front made for a chilly morning and afternoon today, with many locations only reaching the 40s and 50s for high temperatures. A subtle upper ridge will build in today and bring southwesterly flow aloft for the next few days. Winds will remain fairly light but out of the southeast tonight so low temperatures will be a few degrees warmer than this morning.
High pressure in the lower levels will gradually make its way eastward Thurs & Thurs night.
(This evening through Thursday Night) A cooler and much drier post-frontal airmass continues to filter into the region today. Under mostly clear skies, we would likely see widespread freezing temps tonight. But, wouldn't be surprised if a few locations manage to reach the freezing mark tonight, particularly in areas where the clouds are slower to reach. Although high pressure will slide east of the region and southerly winds will return, dry and below normal temps will remain on Thursday. This may result in a bit of a temperature gradient, as highs will top out in the low to mid 50s underneath the cloud cover, with upper 50s to lower 60s expected elsewhere.
(This afternoon through Thursday Night) Very dry and chilly high pressure will move in from the west and settle across the Mid State tonight. Skies will be sunny with highs in the 40s as high pressure remains over the area. high pressure will start to slide east Thursday night, so temps will not be as cold as a light south wind develops.
Light and variable flow for much of the area on Thursday with high pressure overhead.
This lowers temperatures slightly from the previous forecast. The high will then slide east Thursday afternoon, allowing winds to become southerly.
528 PM CST Wed Nov 30 2022 (This evening through Thursday) Early afternoon visible satellite imagery shows high clouds starting to overspread the area as a result of a large-scale trough off the west coast moving east and bringing southwesterly flow aloft.
/NEW/ /Through Thursday Evening/ High pressure has taken over in the wake of the departing upper level storm system responsible for our cold front and the recent convection across the deep south, bringing crisp and mostly clear conditions to the region. The pressure gradient will tighten on Thursday as a developing upper trough over California induces lee cyclogenesis. Clouds and moisture will similarly keep conditions warmer than previous nights, with Thursday night lows remaining in the 40s and lower 50s.
424 PM MST Wed Nov 30 2022 Water vapor shows upper ridge axis over the Rockies with trof just offshore the Pac NW. At the surface, high is shifting into the eastern Dakotas with lee trof advancing east through MT/WY. Temps early this afternoon are mainly in the 20s to mid 30s with a bit of cirrus spilling over the ridge. Lee trof continues to advance east tonight with a 5mb pressure gradient setting up across the Black Hills. Strong west/southwest downslope winds will continue on Thursday with thermal ridge passing overhead. Winds especially in the higher Black Hills could continue to reach near warnings levels through the day, although warm advection and increasing cirrus could limit this potential. Cold front will cross the region Thursday night as upper trof shifts into the Northern Rockies, with gusty northwest winds developing.
The high will then slide east Thursday afternoon, allowing winds to become southerly.
Key Messages: - Warmer temperatures Thursday with gusty southerly winds.
514 PM CST Wed Nov 30 2022 (This afternoon through Thursday Night) Very dry and chilly high pressure will move in from the west and settle across the Mid State tonight. Skies will be sunny with highs in the 40s as high pressure remains over the area. high pressure will start to slide east Thursday night, so temps will not be as cold as a light south wind develops.
A low pressure system continues to dig along the Pacific Northwest coast, causing a warm plume of moisture to stream into the Northern Rockies. This plume is causing significant snow over the higher terrain of northern Idaho and northwest Montana.
(This afternoon through Thursday) Cold front currently pushing southeast across the central portion of the CWA. High pressure will build in back behind the front with dry conditions anticipated for the remainder of the short term period.
High pressure will move into the area on Thursday before a more active pattern will set up this weekend.
Discussion: Weather conditions this afternoon are vastly different than 24 hours ago as a cold front has passed through the local area with much cooler temperatures and breezy northwest winds.
604 PM CST Wed Nov 30 2022 (This evening through Thursday Night) A cooler and much drier post-frontal airmass continues to filter into the region today. Under mostly clear skies, we would likely see widespread freezing temps tonight. But, wouldn't be surprised if a few locations manage to reach the freezing mark tonight, particularly in areas where the clouds are slower to reach. Although high pressure will slide east of the region and southerly winds will return, dry and below normal temps will remain on Thursday. This may result in a bit of a temperature gradient, as highs will top out in the low to mid 50s underneath the cloud cover, with upper 50s to lower 60s expected elsewhere.
Overnight lows are still expected to be in the low 30s with some upper 20s across the highest elevations of NE Georgia. (This afternoon through Thursday) Cold front currently pushing southeast across the central portion of the CWA. High pressure will build in back behind the front with dry conditions anticipated for the remainder of the short term period.
1208 AM CST Thu Dec 1 2022 It will be a quiet but chilly night tonight with high pressure overhead. Lows will fall near freezing for areas S of I-20 to just below freezing N of the I-20 corridor. With continue CAA & E-NE winds at the sfc & only subtle return flow on W side of low-level ridge axis, highs will struggle to peak in low-mid 50s along & N of the I-20 corridor while upper 50s to the S.
110 AM MST Thu Dec 1 2022 This evening through the overnight hours a weak disturbance aloft is expected to travel across the Rockies and over the area, strengthening the lee trough along the Front Range.
1017 PM CST Wed Nov 30 2022 (This afternoon through Thursday night) Last night's cold front made for a chilly morning and afternoon today, with many locations only reaching the 40s and 50s for high temperatures. A subtle upper ridge will build in today and bring southwesterly flow aloft for the next few days. Winds will remain fairly light but out of the southeast tonight so low temperatures will be a few degrees warmer than this morning.
High pressure is located across the Mississippi Valley and will continue to shift eastward overnight and Thursday. Discussion: Weather conditions this afternoon are vastly different than 24 hours ago as a cold front has passed through the local area with much cooler temperatures and breezy northwest winds.
Temps will struggle tomorrow as a cold front drops in during the morning. TFJ A high pressure ridge is currently in place, and mainly high clouds are over the region. Wednesday night into Thursday: The shallow ridge will move off to the east by Thursday afternoon as a trough makes its way into northeast Montana. Slightly warmer temperatures are expected on Thursday.
358 AM EST Thu Dec 1 2022 A cold front remains draped across northern Florida early this morning as ridging aloft remains over much of the peninsula. Low clouds along with some patchy fog will lift over the next few hours as the front shifts slowly southward and drier air starts to work its way into the Nature Coast with high pressure building over the southeast.
After a period of light and variable winds this morning, flow should become southerly as the high moves east. Mid-level southwesterly flow then develops as a large area of low pressure strengthens over the Great Plains. The MSLP gradient between the intensifying system and the high to our east will tighten significantly overnight, allowing winds to increase.
354 AM EST Thu Dec 1 2022 High pressure will move across the area today and head off to the east tonight.
(Tonight through Thursday Night) Well calm sites are cratering with clear skies and calm winds with already a few sites below freezing. Plus, our dew points are chillin in the low to mid north and upper 20s and a few low 30s south.
Cooler and drier air will be advected into the state with mostly clear skies and dry weather. The high temperature for today actually occurred in the early morning just ahead of the frontal boundary. a high pressure tries to develop with mid level flow transitioning to out of the south and southeast.
/Issued 555 PM CST Wed Nov 30 2022/ /Through Thursday Evening/ High pressure has taken over in the wake of the departing upper level storm system responsible for our cold front and the recent convection across the deep south, bringing crisp and mostly clear conditions to the region. The pressure gradient will tighten on Thursday as a developing upper trough over California induces lee cyclogenesis. Clouds and moisture will similarly keep conditions warmer than previous nights, with Thursday night lows remaining in the 40s and lower 50s.
Slightly warmer with highs in the lower 50s tomorrow.
It will be a quiet but chilly night tonight with high pressure overhead. Lows will fall near freezing for areas S of I-20 to just below freezing N of the I-20 corridor. With continue CAA & E-NE winds at the sfc & only subtle return flow on W side of low-level ridge axis, highs will struggle to peak in low-mid 50s along & N of the I-20 corridor while upper 50s to the S.
Latest models support earlier ones on the timing of a cold front tomorrow that will change rain to snow all the way to valley floors. Snow will spread eastward ahead of a cold front early Thursday morning, bringing Widespread MVFR/IFR in snow and low clouds over eastern OR, and eventually to KBOI/KEUL by 16Z.
338 AM EST Thu Dec 1 2022 Cooler and dry conditions are expected to finish out the work week.
1242 AM EST Thu Dec 1 2022 Cooler and dry conditions are expected to finish out the work week.
1020 PM CST Wed Nov 30 2022 (This evening through Thursday) Early afternoon visible satellite imagery shows high clouds starting to overspread the area as a result of a large-scale trough off the west coast moving east and bringing southwesterly flow aloft.
A narrow ridge of higher theta-e values around 850-800mb was being advected northward resulting in MVFR ceilings. Stronger surface lee troughing/cyclogenesis will develop in eastern Colorado this afternoon leading to breezy south to southwesterly winds. The downslope component of the wind will contribute to warmer temperatures today than what was observed yesterday.
Dew points will start to increase on Friday as a more southerly brings about warmer temperatures during the afternoon.
After a chilly start to today with temperatures near freezing, we'll see highs reach the 50s for the most part, but increasing cirrus associated with an active subtropical jet stream may hamper warming a bit, especially north of the I-20 corridor.
305 AM CST Thu Dec 1 2022 Key Messages: - Getting warmer and more windy, strongest gusts Friday night - Precipitation chances return Friday/Friday night - Cold returns for start of weekend Today through Friday night: Warmer, windy, and return of precip chances Southerly return flow will advect in warmer conditions throughout today into tomorrow. Wind gusts closer to 40 mph will be possible in wake of the cold frontal passage. On the higher end of the ensemble guidance, the 30. Ahead of a very pronounced surface cold front, portions of southern Wisconsin into far eastern Iowa may receive some light drizzle in the afternoon.
The advection of a warmer and drier air mass, plus the arrival of low-level ridging, have tapered the remaining snow showers to flurries mainly north and east of Pittsburgh. Skies will remain mostly clear with a high pressure ridge to the southeast.
A cold front will bring a band of snow from west to east through Nevada today and into tonight.
00z model soundings do show a decent 500 mb short wave trough moving through the area this aftn/eve and 00z NAM sounding shows a sounding with a period of deep moisture and some lift in the -10 to -15C range.
WIDESPREAD ACCUMULATING SNOW ACROSS THE NORTHERN ROCKIES THROUGH THURSDAY EVENINGâ¦ A large trough of low pressure continues to slide toward the Pacific coast. In association with the trough, an abundant stream of moisture is moving from the Pacific coast over the Northern Rockies. The low pressure and moisture tap continues to lead to widespread snowfall across the region. A number of high resolution models, in addition to the ECMWF and GFS ensembles, seem to favor the low development near or just south of Missoula and Interstate 90. Snow showers are expected to linger into Thursday night, as the main trough slowly edges closer to the Northern Rockies. Potential exists for isolated snow showers to continue into Friday morning in the northwest flow behind the exiting trough.
This lower cloud deck (still VFR conditions) will gradually shift eastward tonight into early Friday, as the wind veers.
Over the last couple of hours, the ridge axis has begun to slide east and increasing return flow has stabilized temperatures. The highest elevations, namely the Buffalo Ridge, could see a short period with gusts of 40-50 mph late morning. A trough will approach tonight and remain positively-tilted through Friday, but as it tightens up Friday night it will become neutrally- or negatively-tilted as it traverses the Upper Midwest. The main concern will follow the cold front Friday afternoon.
439 AM CST Thu Dec 1 2022 (Today through Friday afternoon) * Not as cold today, warmer and breezy tomorrow. An upper trough will make landfall today in the PacNW, keeping southwest flow aloft over the region. Increased return flow will advect Gulf moisture into the area over the next 24 hours, and leeside troughing on the Front Range ahead of the PacNW trough will induce increased southwest flow over the higher terrain tonight.
635 AM EST Thu Dec 1 2022 High pressure brings drier and colder weather through Friday morning, then milder during the afternoon.
(Today through Friday afternoon) * Not as cold today, warmer and breezy tomorrow. An upper trough will make landfall today in the PacNW, keeping southwest flow aloft over the region. Increased return flow will advect Gulf moisture into the area over the next 24 hours, and leeside troughing on the Front Range ahead of the PacNW trough will induce increased southwest flow over the higher terrain tonight.
424 AM EST Thu Dec 1 2022 High pressure brings much colder weather through Friday morning, and dry conditions through Friday.
634 AM EST Thu Dec 1 2022 High pressure will move across the area today and head off to the east tonight.
601 AM CST Thu Dec 1 2022 Key Messages: - Getting warmer and more windy, strongest gusts Friday night - Precipitation chances return Friday/Friday night - Cold returns for start of weekend Today through Friday night: Warmer, windy, and return of precip chances Southerly return flow will advect in warmer conditions throughout today into tomorrow. Wind gusts closer to 40 mph will be possible in wake of the cold frontal passage. On the higher end of the ensemble guidance, the 30. Ahead of a very pronounced surface cold front, portions of southern Wisconsin into far eastern Iowa may receive some light drizzle in the afternoon.
Strong south to southwesterly winds are expected through the short term with lee troughing across eastern Colorado and strong mid level winds gliding over the Rockies. This will in turn push a cold front through the area by Friday afternoon.
A more broad area of high clouds showing up well on both water vapor and the night time microphysics composite satellite imagery shows the upper ridge is starting to build over the central US. The combination of southerly flow and upper-level ridging will allow us to start warming up today, and especially tomorrow. We will then see another cooldown as a cold front pushes through the region Friday night. The lower RH values combined with strong southerly winds and cured fuels will result in elevated fire weather concerns from late this morning through this evening. A strong cold front will then move through Friday night with temperatures rapidly falling behind the front.
357 AM CST Thu Dec 1 2022 - Strong winds expected with a strong cold frontal passage Friday afternoon. Broad upper level ridging translates west to east across the CONUS today though Friday. This will be ahead of a potent upper trough moving onshore the west coast. This upper trough quickly moves into the Northern Plains as an open wave Friday. A strong arctic cold front will surge southeast into Nebraska by Friday afternoon on the backside of the trough. The highest potential to see a gust that strong would be across far southwest Nebraska where boundary layer mixing looks to be the best.
- Strong winds expected with a strong cold frontal passage Friday afternoon. Broad upper level ridging translates west to east across the CONUS today though Friday. This will be ahead of a potent upper trough moving onshore the west coast. This upper trough quickly moves into the Northern Plains as an open wave Friday. A strong arctic cold front will surge southeast into Nebraska by Friday afternoon on the backside of the trough. The highest potential to see a gust that strong would be across far southwest Nebraska where boundary layer mixing looks to be the best.
Warmer temps today and dry dewpoints will combine to raise grassland fire concerns primarily across northeast Oklahoma.
This high will move across the Eastern Seaboard by this evening and then gradually continue eastward over the western North Atlantic by late Friday.
A ridge will continue to slowly build over the Gulf and build just into the north central Gulf.
Cooler than normal temperatures will prevail. Mid and high clouds are streaming overhead advance of a significant northeast Pacific low pressure system dropping southeast into the region. This system will bring impactful snow to the mountains and significant rain to the lower elevations from this morning into early Friday morning. Around 2-3 feet of snow will accumulate in the higher elevations of the Sierra north of Kern County, with around a 30 percent probability of reaching 36 inches. The southern end of the Sierra will receive around 8-16 inches of snow at the higher elevations.
622 AM EST Thu Dec 1 2022 Cooler and dry conditions are expected to finish out the work week.
Under sunny skies high temperatures will peak in the 50s and 60s this afternoon -- nearly 20 degrees cooler than yesterday. Tonight lows will remain on the cooler side in the 30s and 40s. Once settled, the high will build and a wedge will develop over NE GA.
522 AM CST Thu Dec 1 2022 (Today through Friday Night ) To begin the period, high pressure over the area, will slide to the east through much of the day today. With that said, this pattern will be short lived as a cold front pushes into the state by Thursday night.
(Today through Friday Night ) To begin the period, high pressure over the area, will slide to the east through much of the day today. With that said, this pattern will be short lived as a cold front pushes into the state by Thursday night.
Lows tonight will be slightly warmer than temperatures generally spanning the mid 20s this morning, ranging from the upper 20s to lower 30s.
615 AM EST Thu Dec 1 2022 Aviation Forecast concerns deal with precipitation Friday night ahead of the next cold front. In its wake is ridging which has caused the lake effect snow showers to end; radar is pretty much devoid of echos at present. So, we're looking at a dry day and a half until the approach of the next cold front later Friday. A short wave crossing the Rockies will develop a lee cyclone over the Dakotas before it moves northeast across the western Great Lakes.
There will be the potential for gusts up to 50 mph on both days with Thursday focused around areas along and west of the Kansas Turnpike and for Friday areas along and east of I-135 during the day time and then once again in central Kansas behind the cold front. We'll see continued wind affects from the low pressure due to proximity. A cold front will surge southward during the evening hours.
409 AM MST Thu Dec 1 2022 Warmer today and Friday before a weather system brings much needed moisture to Southeastern Arizona. Today will be the warmest day of the week, with several locales topping out in the low 70s. Southwesterly mid level flow will be in place for the next few days as a trough in the Pacific NW continues to deepen.
Some gusty southerly winds up to 30 mph will develop in the afternoon west of Springfield in response to a deepening low pressure system over the Rockies and High Plains. Friday will be characterized by warmer temperatures and very windy conditions.
(The rest of today ) It was a cold start this with lows well below freezing throughout much of the region.
High pressure will continue to remain in control through tonight with just some passing high clouds.
1120 AM CST Thu Dec 1 2022 (The rest of today ) It was a cold start this with lows well below freezing throughout much of the region.
1143 AM CST Thu Dec 1 2022 (Today through Friday afternoon) * Not as cold today, warmer and breezy tomorrow. An upper trough will make landfall today in the PacNW, keeping southwest flow aloft over the region. Increased return flow will advect Gulf moisture into the area over the next 24 hours, and leeside troughing on the Front Range ahead of the PacNW trough will induce increased southwest flow over the higher terrain tonight.
Upper-level ridging is building back in across the Florida peninsula with breezy ENE flow today. Continued veering of the wind is expected as the ridge axis slides eastward.
(This evening through Friday) Early afternoon upper-level analysis shows a trough moving into the Pacific Northwest. This trough is progged to continue towards the central Plains. As the aforementioned trough nears the Rockies, a lee cyclone will begin to form, and the height gradient over the region will begin to compact.
Discussion: The remainder of today will be dry as high pressure migrates from our area northeast towards the mid-atlantic this afternoon. Dry air aloft mixing down today results in low dewpoints and subsequently low RH values, especially in the higher elevations. Dewpoints are in the teens already across much of east TN, with lower values in the higher terrain.
337 PM EST Thu Dec 1 2022 Cold high pressure will build in to the north through Friday.
(Through Tonight) Strong high pressure to the north will slowly move more to the northeast through Tonight, with a weak inverted trough over the coastal waters. Lows will range from the lower 40s over inland SE GA, to around 60 over coastal NE FL.
Clouds have mostly eroded to the south of US-422, and this process will continue northward through the afternoon as high pressure builds into the region.
1212 PM EST Thu Dec 1 2022 High pressure will pass across the central Appalachians tonight.
1035 AM EST Thu Dec 1 2022 High pressure will move across the area today and head off to the east tonight.
1138 AM PST Thu Dec 1 2022 Mountain snow and valley rain are expected this afternoon into tonight as a trough of low pressure passes across Central California.
1226 PM EST Thu Dec 1 2022 Cooler and dry conditions are expected to finish out the work week.