Aikyam-Lab/Synoptic-Bench huggingface dataset:
623 PM CDT SAT APR 16 2016 Quiet wx conditions are expected tonight due to the continuing influence of a ridge of high pressure located over the eastern half of the CONUS. A warm start, persistent southeasterly flow, and increasing dew points today along with increasing mid/high clouds over the western half of the CWA later tonight should combine to produce overnight lows in the low to mid 50s, which is roughly 8-12 degrees above average for this time of year.
AN UPPER LEVEL RIDGE WILL STRENGTHEN OVER THE REGION TODAY INTO SUNDAY.
1005 PM EDT SAT APR 16 2016 DRY HIGH PRESSURE OVER THE GREAT LAKES WILL GUARANTEE SEVERAL MORE DAYS OF WARM.
RIDGETOP FLOW WILL NOT BE AS GUSTY AS LAST NIGHT, BUT WILL REMAIN A BIT HIGHER THAN VALLEYS. AS A WEAKENING UPPER LOW DRIFTS EWD TOWARD THE MID ATLANTIC COAST.
WITH UPPER LOW CENTERED OVER NORTHWEST CO SUNDAY MORNING. DEFINITELY A DIFFICULT FORECAST FOR THE REST OF THE WEEKEND AS MODELS NOW SHOW THE UPPER LEVEL LOW PRESSURE MOVING NORTH THIS EVENING AND THEN RETROGRADING WESTWARD AS IT MOVES TOWARDS WYOMING LATE TONIGHT AND EARLY SUNDAY. UPPER LEVEL LOW WILL MOVE OVER SOUTHERN WYOMING OR JUST SOUTH OF THE WY/CO BORDER BY LATE SUNDAY.
727 PM EDT SAT APR 16 2016 A STRONG RIDGE OF HIGH PRESSURE WILL CONTINUE TO PROVIDE THE NORTH COUNTRY WITH CLEAR SKIES AND MILD TEMPERATURES ON SUNDAY.
/issued 346 PM CDT SAT MAY 14 2016/ (Tonight and Tomorrow) As of mid afternoon, a weak cold front was was situated roughly along the I-10 corridor. 24 (Sunday Night through Saturday) An upper low will be centered over the Pacific Northwest Sunday resulting in a southwest flow aloft over the forecast area.
as the main area of high pressure sinks across the mid MS valley Sunday and TN valley Sunday night.
Drier air will continue to advect into the area behind a cold front tonight.
Tonight there should be enough clearing after sunset for temperatures to drop into the freezing and frost categories. Utilized a blend of cooler guidance to yield forecast lows in the mid 30s most areas, with lower 30s and even a few upper 20s southwest.
A rather strong cold front was moving across Central Alabama late this afternoon. Cool high pressure builds in overnight with reduced winds. Will have to monitor the normally cooler spots for potentially lower readings, especially north. High pressure remains centered just north of the area on Sunday. With a cooler air mass and some mid level clouds, highs will only reach the 70 to 79 degree range north to south.
634 PM CDT SAT MAY 14 2016 A ridge of high pressure at the surface was situated across the Central and Northern Plains states today and is progged to move southeast over the Middle Mississippi Valley area on Sunday.
1148 PM CDT SAT MAY 14 2016 A ridge of high pressure at the surface was situated across the Central and Northern Plains states today and is progged to move southeast over the Middle Mississippi Valley area on Sunday.
Moisture will move back in from the west Sunday night with the approaching upper level trough ejecting out of a closed low dropping into the Great Basin from the Pacific NW.
Drier weather conditions return by Sunday with a warming trend set for the first half of the upcoming workweek as high pressure builds over the region. Interesting set up today as an upper level trough moves through the region. The passing trough brought colder air aloft and a dissipating surface boundary. Despite the colder airmass temperatures this afternoon are actually running a few degrees warmer because of the increased sunshine. To round out the weekend, the upper trough will exit eastward on Sunday with similar temperatures to today 60s and 70s. To kick off the work week, high pressure will build over the region allowing for a gradual warming trend.
1031 PM EDT SAT MAY 14 2016 A cold front with limited moisture will move through the region tonight.
1121 PM CDT SAT MAY 14 2016 Northwest flow aloft will continue through Saturday and much of Sunday as a mid-level ridge as depicted on water vapor imagery works its way east from the Central Rockies. A rather cool air mass will remain in place for the remainder of today and overnight behind yesterday's cold front. This will keep afternoon highs in the upper 50s today with overnight lows dipping into the lower 40s and even upper 30s for areas north of the Missouri River. The mid-level ridge responsible for the dry conditions for much of the weekend will erode beginning late Sunday afternoon ahead of a deepening trough across the southwestern CONUS.
1038 PM MDT SAT MAY 14 2016 Current surface map places high pressure across eastern Montana into western South Dakota. High pressure remains across the area tonight. Lows will be a few degrees warmer than last night, but still cold enough for areas of frost on the plains.
A short wave trough has moved to the east of Florida with a subsident and dry northwest flow of the state. Near the surface a weak cold front with a few low clouds ahead of it is moving southward through central Florida with drier air behind it that will result in cooler temperatures tonight particularly over the interior. The main thrust of high pressure will be behind the second front which will move down the peninsula with another punch of dry air Sunday resulting in sunny skies.
653 PM CDT SAT MAY 14 2016 Cool high pressure continues to push in at the surface from the west and will be the focus for cool/cold temperatures overnight and even the potential for some scattered patchy frost in favorable areas in the eastern Ozarks. High pressure out in the Plains will shift eastward tonight and become centered over the area on Sunday. The cooler temperatures will be out east where a few low lying areas in the eastern Ozarks my dip into the mid 30s with some patchy frost possible.
the latest water vapor imagery is showing a short wave trough dropping southeast over northern Minnesota. The lower clouds over western Wisconsin should gradually erode this evening and clear through about midnight. Expect several hours of freezing temperatures after midnight in the northeast quadrant of the cwa. readings bottoming out in the low-mid 30s look good to the southwest and have included most of the cwa in the frost advisory for tonight. with cooler readings to the east. The next front/trough will swing in from the north Sunday night and we will keep the far northern cwa dry for the day Sunday.
North of this line, high pressure will provide dry and stable conditions.
An upper level low over central Oregon tonight will continue to pivot area of rain and showers into western Washington until mid-day Sunday.
822 PM EDT SAT MAY 14 2016 An unseasonably cold airmass will remain over the region into Sunday while an upper level trough sits over the Great Lakes.
The lone exceptions being of thunderstorms near a cold frontal zone slowly advancing east through Chambers County along with a couple of discrete cells off of west Galveston Island. The cold front draped along the upper Texas coastline is forecast to move back onshore as a stationary boundary Sunday. once late morning temperatures achieve the lower 80s.
Behind a cold front that moved through earlier, cool high pressure builds in overnight with reduced winds. Will have to monitor the normally cooler spots for potentially lower readings, especially north. High pressure remains centered just north of the area on Sunday. With a cooler air mass and some mid level clouds, highs will only reach the 70 to 79 degree range north to south.
and generally northerly surface wind flow has set up across the area as the very weak cold front has sagged south to the coastline and will continue to move southward out over the Gulf. A large upper trough over eastern North America will begin to lift northeast over the next 24 hours.
733 PM EDT SAT MAY 14 2016 An unseasonably cold airmass will remain over the region into Sunday while an upper level trough sits over the Great Lakes.
Considering eastern Tucker County has the highest elevations out of any zone, did not see the need to include any neighboring zones in the warning, although a very brief period of near freezing temperatures at highest elevations in western Tucker County and Garrett County still cannot be ruled out. Cold front moving through area right now with just scattered showers expected through the remainder of the evening and overnight. with this most likely to occur north of I-80 and in the ridges.
809 PM EDT SAT MAY 14 2016 A cold front with limited moisture will move through the region this evening.
822 PM PDT SAT MAY 14 2016 Upper level low pressure continues to nudge east. The upper low will nudge east overnight. with the center of the low near the columbia basin by sunrise. with additional precip on the east wide of the low across the ne Oregon mountains. Will use categorical pops for most of the higher elevations. A mid/upper low will move into central Oregon tonight. Numerous/widespread showers will continue in the Lower Columbia Basin for the remainder of this evening.
Current forecast generally on track with a large area of high pressure bulging into the region. Chattanooga Airport, TN 42 69 48 71 / 0 0 10 40 Knoxville McGhee Tyson Airport, TN 41 65 43 67 / 0 0 10 30 Oak Ridge, TN 40 66 42 67 / 0 0 10 30 Tri Cities Airport, TN 39 63 39 67 / 10 10 0 20.
The aforementioned high pressure will center itself directly over the area by Sunday afternoon, making for a pleasant, quiet day with highs back into the 60s.
Dry weather prevails across the cwa late this evening with temperatures ranging from the low 60s north to the mid 70s south. A dry reinforcing cold front has been pushing its way through the ArkLaMiss region this afternoon. This has brought cooler temperatures to locations across northern Mississippi and a much drier airmass. Readings this afternoon across the Highway 82 corridor have been in the lower 70s with a north wind and dewpoints in the lower 50s to even mid 40s.
Weakening cold front/surface boundary over Central Florida will dissipate overnight as it reaches South Florida tonight.
1129 PM CDT SAT MAY 14 2016 Cool high pressure continues to push in at the surface from the west and will be the focus for cool/cold temperatures overnight and even the potential for some scattered patchy frost in favorable areas in the eastern Ozarks. High pressure out in the Plains will shift eastward tonight and become centered over the area on Sunday. The cooler temperatures will be out east where a few low lying areas in the eastern Ozarks my dip into the mid 30s with some patchy frost possible.
824 PM PDT SAT MAY 14 2016 A persistent low pressure trough along the west coast will support a deep marine layer with widespread low clouds.
935 PM MST SAT MAY 14 2016 Cooler air is beginning to move into the region as a low pressure system in the northwest U.
1135 PM CDT SAT MAY 14 2016 12z upper-air analysis revealed a mid-level trough from Ontario to the lower Ohio Valley with an upstream ridge over the Pacific Northwest to Great Basin. Attention then turns to the next trough which is currently moving onto the Pacific Northwest coast.
High pressure will build in from the west, allowing a west wind to drop off below 10 mph. Per collaboration with eastern neighbors, have expanded the Frost Advisory to the south along the Interstate 80 corridor, generally where lows of 36 or cooler are expected. Lows will range from the low 30s north to upper 30s south, close to the records for the date noted below. For Sunday, expect slightly warmer and less breezy conditions, with highs in the upper 50s north to mid 60s south.
630 PM CDT SAT MAY 14 2016 Water vapor satellite shows the next short wave trough is dropping out of Saskatchewan early this afternoon. Visible satellite does show an area of enhanced clouds over the eastern Dakotas associated with a band of frontogenesis in the 1000-500 mb layer ahead of the short wave trough. As the short wave trough goes by to the northeast, enough subsidence should develop in its wake to allow the clouds to dissipate and for clear skies to develop.
615 PM CDT SAT MAY 14 2016 12z upper-air analysis revealed a mid-level trough from Ontario to the lower Ohio Valley with an upstream ridge over the Pacific Northwest to Great Basin. Attention then turns to the next trough which is currently moving onto the Pacific Northwest coast.
and then increase in coverage toward dawn as an upper level low moves directly over the area.
657 PM CDT SAT MAY 14 2016 HIGH PRESSURE OVER NEBRASKA IS PROVIDING LIGHT NORTHWEST WINDS OVER ARKANSAS THIS EVENING.
All models are in pretty good agreement on the center of the high moving to our south tonight, with winds shifting around to the west by morning. With the west winds there will be some weak warm air advection, but with very dry dew points and clear skies think that temps will still get down to the low to mid 30s in the west, with some temps near or below 30 in the far eastern tier where the cold air mass will hang on a bit longer. Highs should be a few degrees warmer on Sunday with west winds and think we will again get into the 60s in all but the far eastern counties.
Cold front has completely moved through the CWA this afternoon, and cold air will continue to impact the region over the next few days. With the colder temps to the north, have lows tonight on the Plateau and northeast zones in the mid 30s, with even a few models showing lows getting near freezing. Highs on Sunday will be a bit warmer than today, with most of the area seeing highs in the mid to upper 60s.
845 PM CDT SAT MAY 14 2016 High pressure continues over the area. /ISSUED / HIGH PRESSURE OVER NEBRASKA IS PROVIDING LIGHT NORTHWEST WINDS OVER ARKANSAS THIS EVENING.
/issued / Cold front continues to progress through the region this afternoon and is providing just enough lift to spark some isolated showers and a few thunderstorms.
1020 PM CDT SAT MAY 14 2016 Water vapor satellite shows the next short wave trough is dropping out of Saskatchewan early this afternoon. Visible satellite does show an area of enhanced clouds over the eastern Dakotas associated with a band of frontogenesis in the 1000-500 mb layer ahead of the short wave trough. As the short wave trough goes by to the northeast, enough subsidence should develop in its wake to allow the clouds to dissipate and for clear skies to develop.
The massive long wave trough. Have forecast minimum temperatures in the lower to mid 30s areawide. A few northern locations may reach freezing but this will be brief so no Freeze Warning needed. MTF 233 PM CDT The heart of the cold upper low over the region today.
At the surface, a high pressure was slowly progressing east away from the region. Forecast calls for high temperatures in the low to upper 50s. Rain showers and a few thunderstorms lift out across central Kansas Sunday night as the upper short wave through undercutting the weak ridge over the central high plains lifts out across the forecast area Sunday evening.
/ISSUED 323 PM CDT SAT MAY 14 2016/ The strong cold front has pushed south deep into TX.
959 PM EDT SAT MAY 14 2016 A cold front with limited moisture will move through the region tonight.
On Sunday, strong southwest winds and cooling temperatures are forecast ahead of an approaching low pressure system.
Not the greatest setup for frost overnight as our eastern counties will still have a bit of a gradient from the departing low well off to our east and the high approaching from the west, while our western counties may see the mid level clouds track over the area during the early morning hours. Deep upper level low parked between the Hudson Bay and the Great Lakes this afternoon, keeping Central Illinois under northwesterly flow aloft. Same low brought the cold front through the region yesterday and left plenty of cold air in its wake.
622 PM CDT SAT MAY 14 2016 Northwest flow aloft will continue through Saturday and much of Sunday as a mid-level ridge as depicted on water vapor imagery works its way east from the Central Rockies. A rather cool air mass will remain in place for the remainder of today and overnight behind yesterday's cold front. This will keep afternoon highs in the upper 50s today with overnight lows dipping into the lower 40s and even upper 30s for areas north of the Missouri River. The mid-level ridge responsible for the dry conditions for much of the weekend will erode beginning late Sunday afternoon ahead of a deepening trough across the southwestern CONUS.
Tonight and Sunday The latest RAP analysis and satellite/radar imagery show a deep longwave trough present across the Great Lakes early this afternoon. The cyclonic flow within this trough combined with 850mb temps between 6C and 8C below zero have promoted widespread cloud formation and scattered snow showers/sprinkles across the region. A longwave trough will continue to provide deep cyclonic flow across the region. Areas along the Bayshore and Lakeshore will likely remain a few degrees warmer. which will draw in warmer air from the west. Warmer high temps in the low to mid 50s.
There were warmer temperatures in the lower 40s across the southwest forecast area in the sunnier areas. West to wnw flow will develop Sunday, bringing warmer air into the Northland. Highs will range from the low 50s in the northeastern forecast area to the around 60 in the southwest.
In addition breezy north winds are making it feel even cooler. This will allow lows to fall into the low and mid 40s in the east. with slightly warmer readings elsewhere.
Ridging aloft moves overhead, enhancing the low level upslope of moist air and keeping the low and mid clouds entrenched all day, especially over the favored upslope locales along I-25.
A large upper trough over eastern North America will begin to lift northeast over the next 24 hours.
755 PM EDT SAT MAY 14 2016 A dry cold front with scattered mid and high level clouds continues to move east through central GA at this time. A breezy NW wind will usher in drier air throughout the night with Sunday morning lows in the low 40s north to mid 50s central. 16 Secondary surge of cooler/drier air poised to enter the northwest this afternoon. Cooler and drier airmass brings below normal temperatures to the forecast area tonight through Sunday night.
Decided to be a little bit more liberal with mention of snow in the forecast, although the best chance for snow showers still remains along the Interstate 80 corridor and in the higher elevations.
/issued 140 PM CDT SAT MAY 14 2016/ The upper trough has moved off to the east as ridge builds in from the west.
An upper level low spinning over Oregon this evening is pushing moisture and embedded energy from the Great Basin into southwest Montana. Adjusted pops to reflect this timing with low pops for the rest of the evening over the higher terrain, spreading into the foothills overnight. Modest ridge over the region today with clearing over the eastern two thirds of the CWA. Ridge breaks down tonight as upper trough moves into the intermountain west.
/ISSUED 923 PM CDT SAT MAY 14 2016/ After sort of a warmer start this morning, a strong but dry cold front passing in a NW-SE fashion in the late morning/early afternoon has brought cooler conditions to the Tennessee Valley to end this week. Nethertheless, low temperatures will certainly fall around 15 degrees cooler than seasonal norms. High pressure building southeastward from the central plains will bring northerly winds to the terminals.
619 PM CDT SAT MAY 14 2016 Pocket of cooler air aloft moving through the central portions of the forecast area late this afternoon.
730 PM EDT SAT MAY 14 2016 A few lingering showers will come to an end early this evening as low pressure continues to exit the area. Clouds and winds will diminish this evening which will allow for cold low temperatures tonight from the lower to mid 30s. High temperatures on Sunday will range from the lower to mid 50s, with low temperatures Sunday night dropping back into the mid and upper 30s. (Tonight through Sunday night) A series of short wave trofs was moving through a larger trof south of a low over Hudson Bay. The colder WPC guidance favors lows near freezing. Blended the Nam with the warmer GFS. An upper level trof will top the upstream ridge and become positively tilted over the Midwest.
616 PM CDT SAT MAY 14 2016 Deep upper level low parked between the Hudson Bay and the Great Lakes this afternoon, keeping Central Illinois under northwesterly flow aloft. Same low brought the cold front through the region yesterday and left plenty of cold air in its wake.
907 PM CDT SAT MAY 14 2016 Skies are mostly clear across the forecast area this evening with temperatures ranging from the lower 50s to around 60 degrees. In addition breezy north winds are making it feel even cooler. This will allow lows to fall into the low and mid 40s in the east. with slightly warmer readings elsewhere.
Progressive movement of Sunday morning's trough points to mid-level drying spreading east through the afternoon, so likely POPs were scaled back to chance levels on the Caprock by 18Z. A second and less defined trough is then progged to reach eastern NM by late in the day. Elsewhere, stratus should not yield much within moistening upslope flow, so high temps were kept largely in the lower 60s. Upper low should be poised near the OR/ID state line by Sunday evening with rounded flow to the south of the feature.
The Denver Cyclone is still in place and it is centered over the eastern third of Adams and Arapahoe Counties. Seeing some breaks in the low clouds over the plains now. A weak southwesterly flow aloft will be over the region Sunday night as the ridge axis shifts to the east.
/ss Dynamic low pressure system continues to move into Idaho from Oregon tonight resulting in the development of thunderstorms and heavy showers with the potential for brief intense rainfall. Increasing instability ahead an upper low entering the Oregon coast will lead to increasing showers and scattered thunderstorms across north-central Idaho later this afternoon.
As an upper level low pressure trough moves east into the northern Great Basin and the northern Rockies.
On Sunday, strong southwest winds and cooler temperatures are forecast ahead of an approaching low pressure system.
The center of the high looks to pass fairly close if not through the forecast area. So there is a chance low lying locations drop into the upper 30s while elsewhere manages the lower 40s. The adjusted MOS is by far the coolest guidance with forecast lows in the lower 30s. Tomorrow the mid level ridge builds eastward over the plains. High temperatures are forecasted to stay in the low 60s, with the warmest temperatures across far eastern KS. While there will be weak upper ridging aloft on Sunday, a broad long wave trough with numerous embedded short wave disturbances will be sliding east with one particular short wave trough rolling over the weak ridge Sunday night.
Surface wise, our region lies between an area of high pressure centered in the central Gulf of Mexico, a trough draped along the gulf coast region and a ridge to our east. A few leftover boundaries lurking near the Upper Keys will prompt dime pops to be retained, but scant moisture will support only nickle pops for the Lower and Middle keys. Given a predominate northwest to north wind of around 5 mph, low temperatures should hold in the lower to mid 70s for the most part.
/issued / Skies are mostly clear across the forecast area this evening with temperatures ranging from the lower 50s to around 60 degrees. In addition breezy north winds are making it feel even cooler especially in northwest Tennessee where temperatures are still hanging in the upper 50s. This will allow lows to fall into the low and mid 40s in the east. with slightly warmer readings elsewhere.