Aikyam-Lab/Synoptic-Bench huggingface dataset:
948 AM EST Tue Feb 27 2018 High pressure will cross the area today and tonight before moving offshore Wednesday.
A warm front retreating across the forecast area today will bring increasing and lowering clouds as well as a few showers. The corpse of the cold front that pushed through the area early yesterday has begun to lift northward once again and the warm, moist airmass that was displaced not more than 24 hours ago is forecast to once again overspread the region.
A very cold area of low pressure will move across the area today and then move east tonight and Wednesday.
A ridge of high pressure stretches along the Appalachian mountains, with northeasterly flow bringing Atlantic moisture down the east side of the cool mountain range, and a deck of low clouds advancing into our southwest GA counties, possibly into southeast AL and north FL later this morning/afternoon.
Otherwise, expect high temperatures in the lower to mid 70s this afternoon.
A low pressure system over California will spread light precipitation as far north as western and northern Utah this morning. Precipitation will spread into southern Utah tonight as the low pressure system tracks east across Arizona.
446 AM MST Tue Feb 27 2018 Southwest flow aloft continues across the region through today and tonight ahead of the progressive broad latitude upper trough that sweeps across the high plains from southern Canada to northern Mexico on Wednesday.
along with middle and high level moisture in the Southwest flow aloft between a closed upper low over California and an upper ridge of high pressure in the Central Gulf of Mexico. The upper level closed low out to the West shifts across the Desert Southwest and the Baja Region.
511 AM CST Tue Feb 27 2018 An overhead ridging pattern, combined with persistent warm advection, will make for a pleasant morning and afternoon as temps peak in the mid 60s across the area. Chances of precip will then increase once more Wednesday afternoon and evening, as the previously mentioned upper low advects across the region and additional moisture fields increase aloft.
1053 AM EST Tue Feb 27 2018 A ridge of high pressure will crest over the region this afternoon. Weak low pressure will track just north of Maine tonight. Another low pressure system will move into the area Wednesday night. Hi temps tdy will cont mild, but a few deg cooler than ystdy while temps tngt will be kept a few deg milder then this current ngt due cld cvr, precip, and weak llvl warm advcn. A large area of high pressure will be anchored along the east coast Wednesday as weak waves of low pressure slide across our area in the westerlies north of the high. The low will continue east Wednesday night allowing snow and rain to taper off.
At the surface, a warm front will lift north across the Mid-South tonight. Meanwhile, the warm front is expected to stall somewhere in the vicinity of the I-40 corridor. At the surface, a low pressure system will organize near the Oklahoma and Kansas border.
Some cooler highs, at least for one day, are expected with L- M 70s north of I-4 with U70s to L80s southward down thru the Treasure Coast. Lows tonight, cooler, and generally in the L-M 60s, except U50s possible north of I-4 with some U60s more likely along the immediate Treasure Coast.
Surface pressure falls ahead of a strong upper level system over CA will continue to induce lee troughing across the area. The upper trough moves closer and becomes positively tilted as we head into early Wednesday.
Later this evening, forecast soundings begin to saturate in the low-levels, generally below 850mb. Patch drizzle looks likely across our far southern tier of counties overnight into Wednesday morning, with some patchy freezing drizzle possible as temperatures briefly touch the freezing mark near daybreak. As an approaching upper-level trough brings increased large-scale forcing for ascent into the region, precipitation chances will spread north through the day Wednesday and into Wednesday night. Moisture remains in the low levels and so will continue with a drizzle/freezing drizzle mention. Precipitation may be heavier in southeast Nebraska Wednesday evening when better saturation aloft occurs in advance of the upper trough. Dry conditions with slightly above normal temperatures are expected for the remainder of the work/school week as an upper ridge axis builds overhead.
415 AM MST Tue Feb 27 2018 Upper level analysis has broad ridging across much of the area with a closed low over southern California. At the surface, weak cold front is draped across the southern part of South Dakota, with high pressure over eastern Montana. The trof and upper low to the west will track east across the southern Plains and southeast US mid to late week. Northern stream flow over our region will remain near zonal and mainly dry, with some ridging moving across our area later in the week. Surface cold front will continue to drop south through the area this morning as high pressure slowly shifts east across northern SD.
1100 AM EST Tue Feb 27 2018 High pressure will drift east tonight.
749 AM EST Tue Feb 27 2018 A ridge of high pressure right over the region early today will drift east and off the Mid Atlantic Coast later today and tonight.
As a trough of low pressure pushes into southwest and central Wisconsin tonight, winds will gradually diminish. This trough will bring a axis of MVFR CIGS to areas northwest of Madison by 02z Wed, reaching the Madison area after 06z Wednesday and KMKE/KUES/KENW by 12z Wednesday. An increase in the low level jet and some moisture flux into the region could bring some light showers to the area overnight.
504 AM EST Tue Feb 27 2018 A ridge of high pressure right over the region early today will drift east and off the Mid Atlantic Coast later today and tonight.
As of writing, the warm front continues to push north across the CWA, with the boundary located from near KLRD to near KNMT to just south of KBEA and KVCT. the warm front will push north out of the area with only a brief period of -RADZ expected in the morning across primarily the Brush Country.
837 AM EST Tue Feb 27 2018 High pressure will provide mild and dry weather through tonight.
High pressure over the region will begin to move to the east this afternoon with a weak low-level southerly flow developing over the area. Forecast looks on track with temperatures maxing out for most areas near the low to mid 60s. Chattanooga Airport, TN 66 49 59 56 / 0 80 90 90 Knoxville McGhee Tyson Airport, TN 63 47 57 53 / 0 40 80 90 Oak Ridge, TN 64 47 56 53 / 0 50 90 90 Tri Cities Airport, TN 62 37 54 50 / 0 20 80 90 TN.
1025 AM EST Tue Feb 27 2018 High pressure over the area today will move offshore overnight as the next frontal system crosses the lower MS River Valley.
551 AM EST Tue Feb 27 2018 High pressure will build south of the area today. A small area of low pressure will track across the north tonight.
A thermal trough is on the southern Oregon coast bringing weak offshore flow and totally clear skies to the region this morning, except for the west side inland valleys north of the Umpqua divide. With this in mind I do not expect a widespread "sunrise surprise" of post sunrise fog, but patchy freezing fog, especially near any water is still possible. The next system moves onto the coast this evening down the back- side of a weak upper level ridge offshore. A warm front moves through Wednesday morning and the increased cloud cover should keep most of the west side near to above freezing Wednesday morning. A weak warm front will bring some mid level cloud cover tomorrow.
514 AM EST Tue Feb 27 2018 Currently - A weakening high pressure system extending across the Bahamas and South Florida is resulting in light northeast to east breezes across the Florida Keys. Deep layered ridging remains in place and shower activity, while present, has been isolated, weak and away from land. Nearshore water temperatures are now up in the low to mid 70s on our gulf and bad side waters. As a result, temperatures remain in the low to mid 70s despite dew points in the upper 60s and a relatively weak flow. Meanwhile, a large high pressure system continues to migrate east southeastwards through the eastern United States. Light winds will persist as the ridge axis shifts down the Florida Peninsula into South Florida.
528 AM EST Tue Feb 27 2018 High pressure will provide mild and dry weather through tonight.
Remainder of the afternoon will be VFR under nearly clear skies as high pressure dominates.
546 AM CST Tue Feb 27 2018 Surface map this morning shows an upper low digging into the central California coast. With the low just coming on shore, the h5 pattern has not yet amplified and the pattern across the Midwest is still relatively zonal. High pressure dominates the eastern half of the country. and the ridge axis has slipped to the east, leaving predominantly southerly winds on the back side of the ridge. Have bumped up temps into the low to mid 60s for most of Central IL. Clouds and rain in the overnight will limit the drop in temps, with the lows holding in the mid 40s. Should experience a brief break, but both ECMWF and GFS quick to develop some warm frontal/overrunning precip with the next deeper wave to move across the country.
316 AM MST Tue Feb 27 2018 Weak high pressure over eastern Montana this morning with some patchy fog and frost around the region. Mild weather continues through midweek with split upper trof over the west today moving east and ridge building ahead of next strong upper low dropping into the Pacific Northwest. Sunshine and warmer temperatures resulting a some snowmelt over the next few days, so patchy fog will be an ongoing concern. Stacked low pressure system expected to move through the northern Rockies over the weekend.
619 AM EST Tue Feb 27 2018 High pressure over the Ohio Valley will move off the mid Atlantic Coast by late Wednesday. A weak cold front will sag south across the lower Great Lakes on Wednesday.
Available moisture ahead of the front and cooler air from the the north will favor for fog development across the interior regions the early morning hours.
Another round of showers and storms will likely develop late Wednesday afternoon and Wednesday evening as the cold front approaches, with most of this activity confined to the eastern and southern parts of the forecast area.
331 AM MST Tue Feb 27 2018 Southwest flow aloft continues across the region through today and tonight ahead of the progressive broad latitude upper trough that sweeps across the high plains from southern Canada to northern Mexico on Wednesday.
Cooler temperatures will also accompany the storm, especially in it's wake Wednesday and Wednesday night. A return to dry and warmer weather will follow by the end of the week as the storm track retreats northward. Plenty of cold air with this system with good convection associated with the cold front and above average post-frontal low-top shower activity. A fast moving system with a quick shot of colder air drops temperatures about 15 degrees by Wednesday with many locations near freezing again Wednesday night (including Tucson Metro).
Some increase in high clouds this afternoon, but more so overnight and into Wednesday as a broad upper low approaches the Pacific NW coast.
911 AM EST Tue Feb 27 2018 High pressure over the Ohio Valley will move off the mid Atlantic Coast by late Wednesday. A weak cold front will sag south across the lower Great Lakes on Wednesday.
846 AM EST Tue Feb 27 2018 A cold front now across the central peninsula early this morning will continue to sink south through the remainder of the day.
621 AM EST Tue Feb 27 2018 High pressure builds in from the west today, then moves off the coast tonight and Wednesday.
High pressure will build south across the boundary and continue to ridge across the area through Wednesday as the high center shifts east to over the west Atlantic.
622 AM EST Tue Feb 27 2018 High pressure will continue building into the region today along with drier air and mostly clear skies. The high will begin moving east of the region tonight as the next frontal system crosses the lower MS River Valley.
618 AM EST Tue Feb 27 2018 High pressure will bring mostly clear skies today along with south winds around 10 mph.
The main trough axis is moving east leaving much of the area in northwest flow today. Temperatures today will be in the low to mid 30s. Tomorrow some weak ridging will build to the west of the area which will begin to shift the flow more westerly.
843 AM EST Tue Feb 27 2018 Temperatures as much as 20 degrees cooler than yesterday are expected today, with highs finally close to normal in the mid/upper 60s along the coast and the 70s inland. A few showers are possible along the coast overnight as the frontal boundary lifts back northward as a warm front.
This morning commute could be hazardous as another round of trough will bring mixed rain and snow showers to the area around day break. The cold front has pushed into Idaho and northern Nevada and our forecast area is now firmly behind the cold air. Satellite imagery shows the closed upper level low dropping to NW Oregon with numerous cold air cumulus moving into western Oregon. Cloud cover will diminish early Wednesday evening, but this is likely to lead to developing valley LIFR with freezing fog.
The less humid feeling conditions will be short lived, however, as as an effective warm front develops to the south this evening and spreads NNW overnight. Warmer max temps expected Thursday due to the WAA.
417 AM MST Wed Dec 20 2017 Zonal flow sits across the northern Plains this morning ahead of a trough/upper low now pushing across the Pacific Northwest into the northern Rockies. Colder air will push in on the backside of the low bringing gusty northwest winds and quick drop in temps.
Fog lifting over interior parts of se Ga where sw winds are increasing ahead of cold front to the nw. Breezy and warm conditions by early afternoon as pressure gradient and sw winds increase with approach of cold front to the nw.
Lingering rain associated with cold front passing through the area will be out of the Bay Area before sunrise and exit the Central Coast by around 9 am.
GOES-16 satellite imagery is showing the associated upper trough axis digging nicely into the Pacific NW states, as is expected to move across the Rockies today and tonight. This band appears to run along or just north of the Highway 2 corridor, and should be able to produce a 3 to 5 inch snowfall stripe, generally from Bemidji east across Grand Rapids and the Twin Ports and our northern Wisconsin counties to the Ironwood area.
In the low levels of the atmosphere, an area of high pressure will be located over the northern Bahamas this afternoon. In the mid levels of the atmosphere, an anticyclone will be centered over the Florida Keys today. Anticyclonic flow in the low to mid levels of the atmosphere will be responsible for no chance of rain for the Florida Keys today.
This morning commute could be hazardous as another round of trough will bring mixed rain and snow showers to the area around day break. The cold front has pushed into Idaho and northern Nevada and our forecast area is now firmly behind the cold air. Satellite imagery shows the closed upper level low dropping to NW Oregon with numerous cold air cumulus moving into western Oregon. The freezing level at Medford is 3100 feet, therefore pilots could experience snow showers around 2000 feet and maybe as low as 1500 feet in heavier showers until around 17z. If the lower conditions were to develop, the best chance is in the Rogue Valley, including Medford and this has been added in the TAF. Cloud cover will diminish early this evening, but this is likely to lead to developing valley LIFR with freezing fog.
while an upper ridge exists over the northern High Plains. Skies clear for Thursday while cold high pressure and light winds settle into the area.
High pressure in place, the region will continue to see warm and dry weather. Highs today will be above normal once again in the low to mid 80s.
528 AM CST Wed Dec 20 2017 Water vapor imagery was depicting near zonal flow prevailing over the northern tier of the CONUS with an upstream closed low moving ashore into the Pacific NW. Thursday morning, light freezing drizzle will develop and expand southward over the northern CWA. For this afternoon and evening, models are in agreement the southward extent of the cold air advection push will be limited with the dividing between light freezing drizzle northwest/light drizzle southeast will run roughly from about Shelby Co IA to Jefferson Co NE.
Quiet weather will occur through Thursday as high pressure over the western great lakes and low pressure over the lower Mississippi valley both move eastward. Low pressure will move into the central plains Thursday.
Big changes in store over the next couple of days as a cold front sweeps through the region. Strong winds, much cooler temperatures, and a chance of rain and snow showers will be in store later today through Thursday. Cooler and dry conditions will then persist into the holiday weekend.
Strong cold front passing through sw Idaho at the moment. Scattered snow showers in southern Oregon this evening as upper low comes in from the coast. Otherwise, clearing and colder tonight with lows zero to 15 in the mountains, to near 20 in the lower southern valleys.
Surface cold front is moving southeastward around 20 mph through NorCal early this morning and is presently just to the north of the Sacramento area. Showers will clear most of the remainder of interior NorCal this morning while a few showers are expected to linger at the higher elevations of the northern Sierra into the afternoon and early evening as the upper trough shifts from the PacNW into the Great Basin.
820 AM EST Wed Dec 20 2017 High pressure will shift over South Florida this afternoon into tonight from the north, as low pressure moves east through the southeastern United States. High pressure in place, the region will continue to see warm and dry weather. Highs today will be above normal once again in the low to mid 80s.
Low-level ridging will slide southeastward away from the central FL peninsula over the next 24 hours with the approach of a weak frontal boundary that will align itself across north-central FL by sunrise Thu morning. Low-level ridging pulling southeastward away from the local coastal waters with the approach of a weak frontal boundary that will sag to near our northern coastal waters by daybreak Thu morning.
339 AM MST Wed Dec 20 2017 Slightly above normal temperatures are forecast today before a cold front moves through the region late Wednesday and Thursday, with strong winds developing across southeast California.
A moderate southerly windflow that has developed in advance of an approaching cold front extending southwestward from NE LA to the southern tip of TX has shut down any widespread dense fog development this morning.
Similar to yesterday morning areas of low clouds and fog will continue to burn off through the remainder of the morning with another warm and muggy day on tap with south to southwest winds increasing into the 10 to 15 mph range by late morning and into the afternoon as the gradient tightens a bit between the low to the north and the high to south. Any lingering IFR/LIFR cigs/vsbys will improve into the VFR range after 14Z as the low clouds and fog burn off.
651 AM EST Wed Dec 20 2017 High pressure building into the Ohio Valley from the northwest will keep any rain south of the area today. Southerly winds will pick back up late Thursday, ahead of the next low pressure system ejecting northeast into the area from the lower midwest.
Isolated showers and thunderstorms possible over interior se Ga later this afternoon ahead of approaching cold front. Areas of dense fog will linger over the cooler coastal waters north of Mayport across the Ga waters into early afternoon.
1006 AM EST Wed Dec 20 2017 High pressure building into the Ohio Valley from the northwest will keep any rain south of the area today. Southerly winds will pick back up late Thursday, ahead of the next low pressure system ejecting northeast into the area from the lower midwest.
The latest HRRR and RAP runs still have the heaviest snow amounts just to to the north of that area, keeping the 5-7 inch band from the lower Devils Lake Basin into the central RRV. while an upper ridge exists over the northern High Plains. Skies clear for Thursday while cold high pressure and light winds settle into the area.
A strong cold front will move across northern and central Nevada today bringing accumulating snow, gusty winds, and much colder temperatures.
As this system tracks into the Tennessee River Valley and a weak bubble of high pressure builds southward from Iowa, the cloud cover will gradually get suppressed south of the area by midday. Despite a good deal of sunshine, northeasterly winds will ensure cooler temperatures today than yesterday. with afternoon highs in the lower to middle 40s. A weak cold front will approach from the northwest on Thursday.
451 AM CST Wed Dec 20 2017 Moderate to heavy rainfall is coming to an end this morning as an area of low pressure located over north Mississippi gradually shifts eastward. It will be a bit cooler across the area tonight with lows mainly in the low to mid 40s. In the upper levels models indicate that a cutoff low over the western CONUS will phase with a longwave trough dropping out of Canada, leading to an impressive jet streak with the favorable right entrance region located over the Midsouth.
High pressure will continue to be in place across the area today, with the warm and dry conditions remaining. with broad upper level ridging extending from Cuba northward over the Florida peninsula. Farther west, a closed upper low over the four corners region and associated troughing extends south through the Baja peninsula.
Near-zonal flow today over the Texas and Oklahoma Panhandles becomes southwest tonight as a potent upper- level trof crosses the Great Basin and deepens into a closed low west of the four corners by early Thursday morning. Cold front on Thursday results in sharply cooler conditions, with highs ranging from the mid-30s in northwest sections to lower 60s southeast.
As we move into the afternoon hours, rains should begin to taper off, though everybody should still be dealing with some light rain as the upper low passes overhead. I'm leaning towards not, so I've dropped Thursday's highs back into the 50s, away from the low 60s we had in there.
711 AM EST Wed Dec 20 2017 A ridge of high pressure will build across the region today.
Building high pressure will then bring dry weather and warming temperatures starting Thursday into the weekend. Then building high pressure will bring dry weather and warming temperatures starting Thursday into the weekend.
314 AM MST Wed Dec 20 2017 Zonal flow sits across the northern Plains this morning ahead of a trough/upper low now pushing across the Pacific Northwest into the northern Rockies. Colder air will push in on the backside of the low bringing gusty northwest winds and quick drop in temps.
Chattanooga Airport, TN 59 47 58 47 / 100 20 10 10 Knoxville McGhee Tyson Airport, TN 55 44 57 45 / 100 50 10 10 Oak Ridge, TN 54 43 57 48 / 90 20 10 10 Tri Cities Airport, TN 52 38 55 38 / 90 50 10 10 NC.
417 PM MST Fri Dec 22 2017 00Z TAF CYCLE Lingering clouds and precipitation over far ern NM at 23Z to continue to dissipate as upper trof shifts farther into TX. Weak high pressure will move across NM tonight with light winds and seasonably cold temperatures.
The cold front that brought light snow to much of the region today has shifted to our far southeastern counties, and will be quickly to our east shortly after 00Z. An elongated area of high pressure set up across western Canada will build a ridge into the forecast area through Saturday.
Cold front has passed south of all terminals by 23Z. Upper air analysis this morning showed a trough from Colorado to the Baja Peninsula with southwesterly flow over Texas. At the surface, a cold front was moving through our CWA with southerly winds ahead of the front and northerly winds behind it bringing colder air. High pressure will move across Central Texas Saturday and Saturday night keeping the weather dry and temperatures cool.