Aikyam-Lab/Synoptic-Bench huggingface dataset:
Another very warm and dry day is in store, with weak high pressure ridge extended across the area. This will keep highs limited to the low 80s along the coast, with max temps again near record values in the mid to upper 80s across the interior. A weak cold front will begin to move through the area late tonight, with some patchy fog/light mist still possible overnight, producing tempo IFR/MVFR conditions, especially across the interior.
502 AM MST Sun Feb 27 2022 Quiet weather in store today with an upper level ridge moving into Colorado and dry subident flow becomes dominant. Overnight into Monday, a weak upper level trough moves through the region. Westerly flow increases over the higher elevations leading to gusty conditions. Model cross sections do not indicate potential for a strong mountain wave event; however, the higher mountains/foothills could see gusts up to 55 mph late Sunday to early Monday. There is a very weak upper trof embedded in the northwest flow which will move across Colorado Monday morning with drying and increased subsidence during the day. West to Northwest winds will be decreasing Monday morning behind the trof with mid/high level clouds will also be decreasing by afternoon. Despite the trof passage, temperatures will continue to warm slightly by Monday afternoon.
High pressure was in control over the region and GOES IR imagery showed clear skies over the Mid to Upper Mississippi Valley. Light southwest winds have held temperatures in the 20s so far tonight with most locations running around 20 F warmer than last night.
Dry conditions will persist as high pressure builds over the region through the middle of the week resulting in a strong warming trend.
601 AM CST Sun Feb 27 2022 A stretch of very nice weather is anticipated across the local area as a ridge of high pressure aloft builds across the region through mid-week. eventually giving way to an upper level low ejecting out of the southwest and cooler and more troughy weather returning late in the period. expect temperatures to be about 10 degrees warmer than yesterday afternoon. no appreciable weather is expected until late in the extended when global models bring a cold front across the area from the north and an upper level low from the southwest and into the plains.
High pressure will bring a strong warming trend to go with dry conditions this week. A high pressure ridge will build in from the west over the next few days.
Temperatures have fallen into the lower to mid 70s with dewpoints sitting in the upper 60s. The high pressure that was once influencing our moderate to occasionally strong northeast to east breezes has slid back east over the central North Atlantic, resulting in a gradual slackening of winds overnight.
/issued 213 AM CST Sun Feb 27 2022/ Lingering upper level troughing over the central CONUS will finally pull eastward today as an upper ridge axis begins to build in over the Four Corners region. At the surface, a broad area of high pressure currently analyzed over West Texas this morning will slowly shift eastward today with light northwesterly surface flow becoming southerly this evening. Chilly temperatures will return tonight but will be kept in check by modestly increasing southwesterly surface flow as high pressure shifts slowly southeastward away from the region. Upper ridging over the western CONUS will slowly move east during the week resulting in a substantial increase in thickness values overhead.
347 AM CST Sun Feb 27 2022 H5 analysis tonight had an elongated area of high pressure extending from the northern Caribbean, west into the southern Gulf of Mexico. West of this feature, ridging extended from Nevada north into the Idaho panhandle. High pressure was the dominant surface feature across the central CONUS tonight with this feature extending from the central Rockies, east into the Ohio Valley. Ridging, currently off to the west of the forecast area, will build east today into the central Rockies and high plains. Very dry boundary layer air will remain in place today with surface dew points this afternoon in the lower to middle teens.
448 AM EST Sun Feb 27 2022 High pressure will maintain fair conditions into Sunday, followed by a cold front sweeping southeast across the state Sunday evening.
A weak backdoor cold front may sag south of the I-74 corridor late tonight with little consequence on overnight lows, which should cool pretty uniformly into the mid 20s beneath mostly clear skies. Temperatures should surge into the 50s by Monday afternoon as the effects of compressional warming advect across the Plains and into the Mid-Mississippi Valley ahead of a cold front. Overnight lows will remain mild Monday night as the main upper-level forcing becomes displaced too far east and the cold front stalls/washes-out over northern Illinois. Lows will cool into the lower 30s.
Short term (Today through Monday): A stout upper ridge maintains itâs presence over South Florida, allowing for benign weather and mostly dry conditions overall. Maximum temperatures in the low/mid 80s are expected along the east coast today, and may reach mid/upper 80s along southwest Florida. Maximum temperatures should trend down a degree or two in most areas Monday owing to influence of a northern cold front.
and Monday A cold front was moving through far northern WI early this morning, accompanied by low clouds, and a few flurries near the Upper Michigan border. Temperatures were running a bit warmer than previously thought, so have adjusted trends accordingly. The cold front will move across the rest of the forecast area this morning. Northwest winds will gust to 15 to 20 mph, then diminish as a ridge of high pressure arrives in the afternoon. The clipper low pressure system will move from eastern ND to the WI/MI border on Monday.
507 AM CST Sun Feb 27 2022 (Today and tonight) Quiet and mostly clear conditions expected today and tonight, with winds remaining light under surface ridging conditions.
High pressure will bring dry conditions along with a warming trend through the middle of the upcoming week.
858 AM EST Sun Feb 27 2022 A cold front will sweep south across Pennsylvania this evening.
Temperatures will be on the climb so expect a warmer day than yesterday by 5 to 10 degrees. The ridge will build over the region through mid week allowing the warm advection to continue. By then a modest low pressure system will move into the Pacific Northwest.
305 AM CST Sun Feb 27 2022 High pressure was in control over the region and GOES IR imagery showed clear skies over the Mid to Upper Mississippi Valley. Light southwest winds have held temperatures in the 20s so far tonight with most locations running around 20 F warmer than last night.
The high pressure should begin to slowly move out of the area as a weak frontal boundary moves in Monday morning. /issued 303 AM EST Sun Feb 27 2022/ Upper level ridging will continue to hold over the Florida Peninsula today, with broad subsidence favoring near record warm temperatures.
944 AM EST Sun Feb 27 2022 High pressure extending over the region today will get pushed south as a weak, dry cold front moves across the area tonight. Temperatures will be near normal to start the week, but the return of southerly flow will bring warmer readings into midweek. High pressure will continue to move south away from our region while a cold front approaches from the north. Weak cold front will push south across the area tonight. Weak high pressure will build in behind it for Monday. Period begins with an H5 trough sitting across the northeastern CONUS, providing northwesterly flow aloft across the Ohio Valley.
920 AM EST Sun Feb 27 2022 An upper level system will cross the area today with light rain and snow, followed by a cold front passing through the Mid Atlantic region tonight.
407 AM EST Sun Feb 27 2022 An upper level system will cross the area today with light rain and snow, followed by a cold front passing through the Mid Atlantic region tonight.
As a ridge of high pressure over the Northern Rockies flattens today, a series of low pressure systems will traverse the Gulf of Alaska over the next few days. There will also be a chance for freezing rain in valleys where cold air is able to persist.
433 AM CST Sun Feb 27 2022 A stretch of very nice weather is anticipated across the local area as a ridge of high pressure aloft builds across the region through mid-week. eventually giving way to an upper level low ejecting out of the southwest and cooler and more troughy weather returning late in the period. expect temperatures to be about 10 degrees warmer than yesterday afternoon. no appreciable weather is expected until late in the extended when global models bring a cold front across the area from the north and an upper level low from the southwest and into the plains.
725 AM EST Sun Feb 27 2022 Dry and warmer weather, with gusty wind is expected today before a cold front returns a chance of snow showers north of Pittsburgh tonight. A strong jet aloft and a mixed boundary layer should lead to gusts up to 30 mph this afternoon, with higher values in the Laurel Mountains, and WV ridges. Clouds should begin to increase late this afternoon N of I 80 as a weakening cold front with attachment to newfoundland moves sely through the northeast. The cold front should complete its passage across the Upper Ohio Valley region tonight. Increasing clouds are expected across the area in warm advection ahead of the approaching trough.
Max temperatures today will be noticeably warmer region-wide with 50s to around 60F plains, and 40s in the valleys.
Dry conditons will persist as high pressure builds over the region through the middle of the week resulting in a strong warming trend.
With the skies finally clearing and winds decreasing in response to high pressure building over the state, very cold temperatures will be on tap for tonight. Locations generally north of the US-59/I-69 corridor (excluding the Houston metro) should see freezing to just below freezing temperatures overnight/early tomorrow morning. Temperatures will be warming tomorrow given the all increased sun with highs in the lower and mid 60s.
High pressure dominates the weather during the new work week. This will keep most of the rain in this location for the next few hours but as the upper trough to the west pushes into the area, expect rain to slowly shift south through the afternoon. Overnight, the trough axis will begin to move across the northern counties first, while the tail end may be slower to push through the southern counties until late in the near term period. Temperatures will be 5-10 degrees warmer than Sunday but still several degrees below normal for the last day of February.
An associated cold front will approach our region later this afternoon into the evening bringing a chance for showers in Alabama and Central Georgia but, the line of showers could extend south towards the coast overnight into early Monday morning. Temperatures today will warm to the mid 70s in SE Al to the low 80s in FL Big Bend. Tonight, as the cold front is beginning to make its way through, will have temperatures in the upper 40s west of the Albany/Panama City line and mid 50s east of that line.
643 AM EST Sun Feb 27 2022 An upper level system will cross the area today with light rain and snow, followed by a cold front passing through the Mid Atlantic region tonight.
553 AM MST Sun Feb 27 2022 Cancelled the High Wind Warning from K3HT to K6S0. Have therefore cancelled the High Wind Warning. Next challenge was whether to extend any part of the highlight. However, with areas struggling to meet criteria, do not have the confidence to extend the highlights. Still expect some patchy blowing snow this morning in the highlight areas, as temps did not get as warm as predicted yesterday, so snow may not be crusted over. Forecast area will be dry today as upper ridging moves east, and zonal flow moves over the region. Ridging rebuilds over the area tonight and Monday, and atmospheric river supported some low PoPs in the mountains.
Light rain is falling mainly north of the I-20 corridor this morning, as a short wave and associated cold front move across the area.
Clear skies and warmer temperatures will help jumpstart the melting process for those impacted by freezing rain and sleet recently. H500 and sfc ridging will build in from the west which will help temps climb into the 50s/60s on Monday.
More precipitation will arrive tonight producing heavy mountain snow and a mix of rain and snow in the lowlands.
1203 PM PST Sun Feb 27 2022 More precipitation will arrive tonight producing heavy mountain snow and a mix of rain and snow in the lowlands.
This will help with warming trend yielding highs in the lower to middle 60s Monday after a cold start (mainly upper 20s). High clouds will also be on the increase tomorrow, which should help keep temperatures from rising toward the warmer side of guidance.
Northerly winds will diminish early this evening and become light overnight as the low level ridge axis settles into central areas of the CWA. Temperatures will warm quickly after sunrise Monday given the dry air and mostly full insolation, with the exception of some thin high cirrus riding over the top of the upper level ridge across the northern CWA.
1227 PM EST Sun Feb 27 2022 A cold front will sweep south across Pennsylvania this evening.
1256 PM EST Sun Feb 27 2022 Broad low pressure will pass over the region today and into tonight, followed by a return to high pressure early this week. The highest POPs are far inland and for our northern counties this evening, tapering further south. As a coastal low pressure at the surface peels away from the coastline a secondary surge in moisture is possible.
With clearing skies, light winds, and residual moisture, the threat of freezing fog is possible overnight. The threat of any wintry weather, minus a potential for freezing fog overnight, will be nixed for at least the next 7 days. Winter weather threat is minimal with temps well above freezing in the precip area and deeper moisture quickly pushing east. Given the wet ground seems like freezing fog could be an issue as indicated by some hi-res models. Will mention patchy freezing fog for now over much of the area.
1112 AM EST Sun Feb 27 2022 Dry and mild winter temperature, with gusty wind is expected today before a cold front returns a chance of snow showers north of Pittsburgh tonight. A strong jet aloft and a mixed boundary layer should lead to gusts up to 30 mph this afternoon, with higher values in the Laurel Mountains, and WV ridges. Clouds should begin to increase late this afternoon N of I 80 as a weakening cold front with attachment to Newfoundland moves sely through New England. The cold front will complete its passage across the Upper Ohio Valley tonight.
A ridge of high pressure is bringing light westerly winds and ample sunshine to central Illinois this morning. A weak backdoor cold front may sag south of the I-74 corridor late tonight with little consequence on overnight lows, which should cool pretty uniformly into the mid 20s beneath mostly clear skies. Temperatures should surge into the 50s by Monday afternoon as the effects of compressional warming advect across the Plains and into the Mid-Mississippi Valley ahead of a cold front. Overnight lows will remain mild Monday night as the main upper-level forcing becomes displaced too far east and the cold front stalls/washes-out over northern Illinois. Lows will cool into the lower 30s.
Temperatures range from the low-to-mid 40s across southern Indiana up to near 50 degrees around the KY/TN border and will increase a few more degrees by mid-afternoon. Tomorrow, deep NW flow is expected across the Ohio and Tennessee Valleys with upper-level ridging located across the Intermountain West and troughing located off the east coast of North America. At the surface, an elongated ridge of high pressure will extend from SW- NE across the Ohio and lower Mississippi Valleys, setting up another day filled with sunshine across the region.
304 PM EST Sun Feb 27 2022 A cold front will sweep south across Pennsylvania this evening.
Mid- level ridging will build in Monday with southerly flow returning to the area.
1147 AM CST Sun Feb 27 2022 Quiet conditions persist throughout the region early this morning as we enter into a prolonged warmer and drier pattern.
237 PM CST Sun Feb 27 2022 Upper pattern was beginning to change with ridging building over the Rockies per recent water vapor imagery. The spine of the low level ridge was located from north Texas to along the Ohio River with modest westerly winds to its north.
224 PM EST Sun Feb 27 2022 A cold front will wash out over the Mid-Atlantic tonight.
Overnight, high pressure, which is currently sprawled across west Texas this afternoon, will start moving eastward. Tomorrow, light southerly flow is expected as the area of high pressure continues eastward. This will help to bring in warmer temperatures in the upper 60s to around 70 tomorrow afternoon.
144 PM MST Sun Feb 27 2022 An upper ridge covers the western CONUS, with a trough over the east, and northwesterly flow over the northern plains. Over the Black Hills, relative humidity has dipped into the lower teens, but winds in that area are relatively light. Stationary boundary will continue keeping the coldest air to the northeast, and WAA will resume as the western upper ridge rebuilds.
The high pressure center is expected to slide south/southeast of the CWA tonight allowing for a return of south to southwesterly winds Monday morning.
119 PM CST Sun Feb 27 2022 H5 analysis tonight had an elongated area of high pressure extending from the northern Caribbean, west into the southern Gulf of Mexico. West of this feature, ridging extended from Nevada north into the Idaho panhandle. High pressure was the dominant surface feature across the central CONUS tonight with this feature extending from the central Rockies, east into the Ohio Valley. A forecast update is in place for warmer temperatures this afternoon. Ridging, currently off to the west of the forecast area, will build east today into the central Rockies and high plains. Very dry boundary layer air will remain in place today with surface dew points this afternoon in the lower to middle teens.
Low pressure system is off the coast and is helping to drive the event. A ridge of high pressure over the Great Basin will deflect most of this moisture north of our area. With the ridge building in our temperatures should finally recover.
331 PM EST Sun Feb 27 2022 A cold front will sweep south across Pennsylvania this evening.
148 PM CST Sun Feb 27 2022 Current 500mb analysis shows ridging from the desert southwest through the central Rockies and into the Plains, leaving ND under northwest flow aloft. 850mb WAA associated with the passing of the low will create an inversion just above the surface to prevent higher gusts from being mixed down, but widespread sustained winds near 20 kts are expected during the day.
At the surface, high pressure will continue to move into eastern Texas today allowing winds to become more southerly by late tonight as lee troughing develops in its wake across eastern New Mexico. This additional cloud cover and southerly winds will keep temperatures a bit warmer than the past few nights with most locations bottoming out in the 20s and lower 30s. /WCI Rather mild afternoons will prevail through the remainder of the coming week as broad upper ridging gradually emerges from the Intermountain West above the High Plains. A weakness caught up within the ridge will gradually approach and pass over West Texas through midweek.
/ISSUED 435 AM MST Sun Feb 27 2022/ Weak ridging aloft over Montana will be flattened as a disturbance moves eastward through southern Canada today. At the surface, a closed low pressure system in southern Alberta will remain nearly stationary before ejecting eastward overnight.
106 PM EST Sun Feb 27 2022 A weak area of low pressure will track east and off the Carolina coast tonight. Dry high pressure builds in Monday and likely dominates our weather through the end of the week. Weak WAA and isentropic lift is still present in the low levels, which will maintain abundant cloud cover thru the remainder of the aftn.
ABM Chattanooga Airport, TN 33 59 36 65 38 / 10 0 0 0 0 Knoxville McGhee Tyson Airport, TN 30 57 35 62 37 / 0 0 0 0 0 Oak Ridge, TN 30 57 34 63 35 / 0 0 0 0 0 Tri Cities Airport, TN 27 56 31 60 34 / 0 0 0 0 0.
With high pressure building in from the north, expect this push of dry air and subsequent clearing to take place from northwest to southeast over the course of the late afternoon and evening hours. Will need to watch for the development of pockets of fog (or light freezing fog) due residual boundary layer moisture from the earlier rainfall. Tranquil weather expected early this week as high pressure at the surface becomes established over the area.
With CAA, lingering low stratus & thermo trough over ArkLaTex moving in, another challenging thermo gradient & temp fcst remains. Light rain is falling mainly north of the I-20 corridor this morning, as a short wave and associated cold front move across the area.
This trend will continue through the course of the afternoon in wake of the H850 trough passage, which was analyzed from Deep E TX into NCntrl LA as of mid-morning. Should see a return to mostly clear conditions by this evening especially over NCntrl LA, with another cold night expected as sfc ridging settles over the area from the WNW.
1124 AM CST Sun Feb 27 2022 H5 analysis tonight had an elongated area of high pressure extending from the northern Caribbean, west into the southern Gulf of Mexico. West of this feature, ridging extended from Nevada north into the Idaho panhandle. High pressure was the dominant surface feature across the central CONUS tonight with this feature extending from the central Rockies, east into the Ohio Valley. Ridging, currently off to the west of the forecast area, will build east today into the central Rockies and high plains. Very dry boundary layer air will remain in place today with surface dew points this afternoon in the lower to middle teens.
Quiet weather in store today with an upper level ridge moving into Colorado and dry subsident flow becomes dominant. Overnight into Monday, a weak upper level trough moves through the region. Westerly flow increases over the higher elevations leading to gusty conditions. Model cross sections do not indicate potential for a strong mountain wave event; however, the higher mountains/foothills could see gusts up to 55 mph late Sunday to early Monday. There is a very weak upper trof embedded in the northwest flow which will move across Colorado Monday morning with drying and increased subsidence during the day. West to Northwest winds will be decreasing Monday morning behind the trof with mid/high level clouds will also be decreasing by afternoon. Despite the trof passage, temperatures will continue to warm slightly by Monday afternoon.
At 230 PM, skies were fair and temperatures were noticeably warmer due to a broad area of downsloping westerly flow across Nebraska and South Dakota. The primary drivers of which will be a building ridge aloft, continuous downsloping flow in the lee of the Rockies and favorable conditions for boundary layer mixing.
316 PM EST Sun Feb 27 2022 Modest boundary layer moisture coupled with weak inhibition continue to induce showers across the Lower Keys this afternoon. The 850 and 500 MB Raob observations across Florida show that the low and mid level ridges have begun to weaken. THe weakening will continue over the next 12 to 24 hours due to an upper level short wave trough that will aid in pushing a stationary front cloaked over central Florida through the rest of the Peninsula over the next several days.
Plenty of sun will allow for a steady warmup with afternoon highs in the 50s (about 15 to 20 degrees warmer than yesterday). A clear, dry and relatively calm night will allow temperatures to fall below freezing with lows mainly in the 20s to around 30. It appears the air will be too dry to support any radiation fog/freezing fog for most locations. After a cold and calm start to the morning, temperatures will quickly climb through the day, reaching the lower and middle 60s by afternoon.