Aikyam-Lab/Synoptic-Bench huggingface dataset:
Todays upper ridge will be followed by a weak upper trough early Sunday and another weak upper ridge late Sunday. Dry conditions will continue aloft while solutions were trending a little more towards a possible bout of low clouds Sunday morning mainly on the Caprock, though surface dewpoints remain depleted following the latest strong cold front.
Low temperatures tonight will range from the mid/upper 20's to the low 30's. Sundays highs should be a bit warmer than today with highs from the upper 40's to low 60's. Upper level trough along the east coast Sunday night will shift off the east coast at the end of the weekend.
With the ridge scooting off to the east winds tomorrow will be out of the east, turning southeasterly by Sunday night.
An upper ridge over the area has drifted to our east a bit allowing abundant high level moisture to stream through and lots of high clouds. A cold front will move east through the CWA this evening. Without the low level moisture, any showers are expected to not move east of the central Montana mountains.
(This afternoon through Sunday) General upper ridging will remain over the plains this weekended with the warm conditions today returning again tomorrow. By Sunday morning, modest lee troughing will begin over eastern Colorado with a subsequent increase in southwest wind over the western half of Oklahoma.
200 PM MST Sat Mar 6 2021 20z surface analysis had low over southeast AB with warm front into south central SD. Very dry air behind front with RHes bottoming out in the upper single digits to teens, especially over the higher terrain. Tonight, upper trough races northeast pushing warm front through rest of CWA and then dropping a trailing cool front through later tonight.
On Sunday, strong south to southwest winds are forecast by afternoon with thermal ridging in the Plains edging into the state.
1122 AM CST Sat Mar 6 2021 VFR conditions are expected as high pressure will continue to dominate the weather pattern through the period. High pressure will continue to build in over the area through the period with widespread VFR conditions expected. Temperatures across the state are on the cool side with readings generally in the lower 30s to lower 40s.
132 PM CST Sat Mar 6 2021 High pressure continues to seep into the TN Valley overnight with cool, dry air taking hold tonight. The longwave trough that has settled over the eastern seaboard will push offshore into the Atlantic late this weekend as upper level ridging pushes in from the Southern Plains.
355 PM EST Sat Mar 6 2021 Large amplitude, longwave trough/ridge dipole is in place over North America this afternoon with Southeast Michigan residing within the transition zone between high and low geopotential heights.
The region will be between high pressure to the northwest and low pressure to the southeast through Tonight. As the low moves further to the southeast through the night and the high builds closer, rain chances will fall through the evening, with showers exiting southeast counties overnight. The high will build and strengthen from the northwest through the day Sunday, with skies becoming clear.
1032 AM EST Sat Mar 6 2021 The frontal boundary is currently located across southern Brevard and Osceola counties with the low pressure located over the GOMEX.
High pressure, light winds, a few passing high clouds and temperatures warming into the 40s can be expected. Gagan (Issued 336 AM CST Sat Mar 6 2021) Today and Tonight: High pressure will sit over WI today and shift over lower MI on Sunday. Temperatures today will be just a bit cooler than yesterday, although still above climatological normal due to this dry air mass. Tonight will be chilly once again in the upper teens and lower twenties as the upper low departs. Warm air advection will kick in on Sunday with return flow around the high and gusty southerly winds.
Ahead of the trough develops a 50-60 kt LLJ overnight tonight into Sunday morning.
This cloud area has served to limit the radiational cooling through 2 AM, and if it holds, it's going to keep lows in the lower 30s for much of the CWA, except the northeast where clear skis has resulted in mid 20s lows already earlier tonight. This should be last sub freezing night for some time.
High pressure will build back into Middle Tennessee today.
1245 PM EST Sat Mar 6 2021 Low pressure will pass well to our south through today. Otherwise, chilly high pressure will extend east across the central Appalachians and southern middle Atlantic through the weekend. Highs across northern two-thirds of the forecast area today will average 2-3 degrees warmer than yesterday. However across the southern counties, highs will be very comparable to yesterday and perhaps even a degree or two cooler, owing to the mid/high clouds persisting into the afternoon. The mid/upper trough axis will shift to our east and well offshore Sunday.
Mid- level clouds are hanging around the region's peaks and ridges, but these too will thin as the day goes on. Road cameras show the only places with snow on the roads are either in the high Cascades or along passes east of the Cascades. Temperatures in the Rogue and Umpqua should remain above freezing tonight, but in the Illinois and Applegate valleys temperatuers are expected to fall below freezing. If the next front produces rain before freezing temperatures devlop, the rain and mixing winds should prevent this frozen leyer from developing. A cold front is slowly moving though the area this morning. Overall conditions will improve to VFR later this morning into the afternoon as drier air moves into the lower layers of the atmosphere.
An area of high pressure will settle over the region tonight keeping the weather dry and cool tonight. Temperatures will be a little warmer on Sunday with highs in the low to mid 60s.
Expect more sun and northerly flow on Sunday as an upper trough slowly pulls away to the east. High pressure continues to be the main story, at least through mid week.
1132 AM CST Sat Mar 6 2021 A mid/upper ridge is progged to translate eastward across the central CONUS today and tonight.
220 PM CST Sat Mar 6 2021 (Issued 220 PM CST Sat Mar 6 2021) Tonight through Sunday night: High pressure is in control of our weather regime. Mainly clear skies and light winds will give way to another seasonably chilly night, perhaps a few degrees cooler than last night. South winds Sunday night will result in much warmer low Sunday night (mid 30s give or take).
1015 AM MST Sat Mar 6 2021 A high amplitude upper ridge dominated the Rocky Mountains, with upper troughs over the western and eastern CONUS. Ridging surface and aloft will maintain the fair, mild and dry weather pattern this weekend.
High pressure at the surface was noted across the Mississippi River Valley and extending north into the Ohio Valley. High pressure at the surface will continue to promote VFR conditions at all TAF sites for the next 24 hours. Diegan Chattanooga Airport, TN 33 60 34 65 38 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 30 54 29 61 36 / 0 0 0 0 0 Oak Ridge, TN 30 55 29 62 36 / 0 0 0 0 0 Tri Cities Airport, TN 25 49 22 59 33 / 0 0 0 0 0.
400 PM CST Sat Mar 6 2021 Warmer temperatures are on the way for Sunday along with stronger winds. The area of high pressure currently extending from western Ontario into the mid-Mississippi River Valley will work slowly off to the east tonight and Sunday. This will allow a cold front to emerge from the Rockies and tighten up the pressure gradient over the region for Sunday. These winds will bring in warmer air with highs expected to top out from the middle/upper 40s to the upper 50s. Wide and expansive ridging aloft is contributing to these above normal temperatures.
941 PM EST Sat Mar 6 2021 High pressure west of the region will settle over the Ohio Valley early Sunday morning.
635 PM EST Sat Mar 6 2021 High pressure west of the region will settle over the Ohio Valley early Sunday morning.
This will likely keep temps up a degree or two south, but should see better radiational cooling north to see temps in the lower to mid 40s. With the increased cloud cover do have a slightly cooler max temp Sunday in the south, but should be generally 70-75 across the region. cooler near the water. Surface ridging begins to shift east of the area tomorrow with a more easterly wind developing.
However, southerly winds will shift to the west and then northwest with a passing trough and cold front overnight. Winds may become gusty from the northwest with the cold front early Sunday morning. 20z surface analysis had low over southeast AB with warm front into south central SD. Very dry air behind front with RHes bottoming out in the upper single digits to teens, especially over the higher terrain. Tonight, upper trough races northeast pushing warm front through rest of CWA and then dropping a trailing cool front through later tonight.
- Moderating temperatures into mid week One more cold night ahead of us tonight with good radiational cooling expected thanks to high pressure moving overhead.
400 PM MST Sat Mar 6 2021 An upper level ridge has brought unseasonably warm temperatures to southeast Wyoming and the western Nebraska Panhandle; highs are 10 to 20 degrees above normal today. Don't foresee changing conditions across this section of the region until the low-level jet diminishes around sunset.
826 PM CST Sat Mar 6 2021 High pressure in control of the weather across the Tennessee Valley this evening, resulting in benign weather conditions with a clear sky and light northerly flow. Expect temperatures to drop to near to just below the freezing mark across most areas by early Sunday morning, with lows in the upper 20s to lower 30s being common. The longwave trough that has settled over the eastern seaboard will push offshore into the Atlantic late this weekend as upper level ridging pushes in from the Southern Plains.
416 PM MST Sat Mar 6 2021 20z surface analysis had low over southeast AB with warm front into south central SD. Very dry air behind front with RHes bottoming out in the upper single digits to teens, especially over the higher terrain. Tonight, upper trough races northeast pushing warm front through rest of CWA and then dropping a trailing cool front through later tonight.
Under sunny skies temperatures are currently in the upper 50s to the lower 60s across the area. The area of high pressure will move off to the east on Sunday. The gusty southerly winds will help to usher warmer conditions into the area as highs warm into the middle 60s to near 70 degrees Sunday afternoon. An upper level ridge will be over the region early this week.
523 PM CST Sat Mar 6 2021 (This afternoon through Sunday) General upper ridging will remain over the plains this weekended with the warm conditions today returning again tomorrow. By Sunday morning, modest lee troughing will begin over eastern Colorado with a subsequent increase in southwest wind over the western half of Oklahoma.
547 PM EST Sat Mar 6 2021 Other than a few patches of scattered cumulus early in the forecast, expect clear conditions into Sunday morning as high pressure builds further into the area. Large amplitude, longwave trough/ridge dipole is in place over North America this afternoon with Southeast Michigan residing within the transition zone between high and low geopotential heights.
/NEW/ /Through Sunday Evening/ Pleasant weather will persist for the rest of the weekend as ridging aloft dominates Texas and the Southern Plains. High temperatures in the 70s to low 80 degrees are expected through the week as we remain under the influence of upper level ridging.
610 PM EST Sat Mar 6 2021 Aviation - Moderating temperatures into mid week - Gusty winds at times - Risk for heavier rain potentially arriving Wed into Thu - Moderating temperatures into mid week One more cold night ahead of us tonight with good radiational cooling expected thanks to high pressure moving overhead.
414 PM CST Sat Mar 6 2021 Tonight and tomorrow: High pressure will continue to build into the region, resulting in clear skies and dry weather.
229 PM MST Sat Mar 6 2021 An amplified ridge is sitting just to our east, extending from Texas into the central Canadian provinces. As the system moving through the northern Rockies continues to shift east, ridging will build back in over the Desert Southwest, placing western Colorado and eastern Utah under clear skies and southwest flow aloft.
High pressure continues to seep into the TN Valley overnight with cool, dry air taking hold tonight. The longwave trough that has settled over the eastern seaboard will push offshore into the Atlantic late this weekend as upper level ridging pushes in from the Southern Plains.
High temperatures in the 70s to low 80 degrees are expected through the week as we remain under the influence of upper level ridging.
429 PM MST Sat Mar 6 2021 An amplified ridge is sitting just to our east, extending from Texas into the central Canadian provinces. As the system moving through the northern Rockies continues to shift east, ridging will build back in over the Desert Southwest, placing western Colorado and eastern Utah under clear skies and southwest flow aloft.
Mid-level ridging over the region will get squashed a bit over the next 24-36 hrs as a s/w lifts northeast into and across the Northern Plains late tonight and Sunday. On Sunday, sfc trof will move east of the CWA by noon. RHs are progged to get the lowest over NC SD, so that is where the main threat resides as winds will be breezy out there too. Sunday night should be cooler vs tonight since winds will go light and variable over much of the region.
401 PM EST Sat Mar 6 2021 High pressure west of the region will settle over the Ohio Valley early Sunday morning.
737 PM EST Sat Mar 6 2021 The majority of the showers continues to push southeast as the area of low pressure moves over southern Florida. Mostly cloudy skies will stick around tonight until strong high pressure moves in from the northwest allowing for drier and cooler air to filter into the region on Sunday.
With dewpoints slightly lower than expected, this should also trend the forecast towards a slightly cooler result, so overnight lows tonight are a bit below NBM values. Most locations should be in the middle to upper 30s, but I would not be surprised to some our typical cold spots very close to freezing tonight.
A Pacific weather system is bringing gusty winds to NV today along with cooler temperatures.
The pres gradient between the high and a departing cold front over the Gulf of Mexico remains strong enough to support gusty northerly winds acrs the region this aftn.
Temperatures will continue to cool through the night, with lows in the 30s to near 40 over the plains and Foothills, and in the teens and 20s for the high country.
Upper level heights will also be rising as the upper level ridge over the Plains moves eastward into MO. Went warmer than NBM for highs on Sunday as it has been consistently under-performing on maximum temperatures this past week.
Cooler today and tomorrow in the wake of the cold front that passed through the area this morning.
Kavinsky (Issued 220 PM CST Sat Mar 6 2021) Tonight through Sunday night: High pressure is in control of our weather regime. Mainly clear skies and light winds will give way to another seasonably chilly night, perhaps a few degrees cooler than last night. South winds Sunday night will result in much warmer low Sunday night (mid 30s give or take).
347 PM CST Sat Mar 6 2021 Tonight, upper level ridging will build over our area and rain chances will be low. South of Lake Pontchartrain, most locations should expect lows in the low to upper 40s. Sunday, ridging still continues to build over our area.
Lows tomorrow night are expected to be a degree or two warmer than tonight if all goes according to plan.
This trough will pass well to the north of Colorado as a ridge will build back in over Colorado during the day tomorrow. At the surface, a low pressure system will move across the Northern Plains with an extremely weak cold front moving across northeast Colorado tonight. This cold front will have essentially no impact on our weather besides decreasing wind speeds tomorrow. Southwesterly flow aloft will keep conditions warmer than normal tomorrow with highs about the same or slightly warmer than today. These mild temperatures along with the low moisture values will mean relative humidity will drop to the low teens across the plains.
Lee trough in place does look as if it will support continued stronger winds and gusts for much of tonight over the eastern plains. Made little changes to the low temps tonight only to increase slightly, with these elevated winds providing a relatively mild night.
Some hail was reported in Volusia County earlier today as the freezing level was lower than normal and very cold air aloft was observed from local soundings. The pressure gradient tightens this evening/overnight behind the latest cold front and N/NE winds will increase to 10-15 mph, perhaps a little higher, with frequent higher gusts. Afternoon highs will be cooler than normal for this time of year with highs in the M-U60s across the north, and a few L70s far south.
/EC/ Tonight and tomorrow: High pressure will continue to build into the region, resulting in clear skies and dry weather.
High pressure passes by to the north and winds should veer from the NE this evening to the east Sunday. Lows tomorrow night are expected to be a degree or two warmer than tonight if all goes according to plan.
515 PM CST Sat Mar 6 2021 Surface and upper-level high pressure to maintain VFR conditions across the region overnight into Sunday. With dewpoints slightly lower than expected, this should also trend the forecast towards a slightly cooler result, so overnight lows tonight are a bit below NBM values. Most locations should be in the middle to upper 30s, but I would not be surprised to some our typical cold spots very close to freezing tonight.
Current radar loops show showers transitioning the region in association with an approaching cold front. Most of the valleys are mild and seeing downslope- drying affects, so most of the showers will remain limited to the higher terrain.
Showers have ended across the area this evening in the wake of today's cold frontal passage.
232 AM EST Sun Mar 7 2021 Dry high pressure will dominate the weather through the week ahead with plenty of sunshine each day.
1016 PM CST Sat Mar 6 2021 (This afternoon through Sunday) General upper ridging will remain over the plains this weekended with the warm conditions today returning again tomorrow. By Sunday morning, modest lee troughing will begin over eastern Colorado with a subsequent increase in southwest wind over the western half of Oklahoma.
1230 AM EST Sun Mar 7 2021 Dry and colder than average weather is expected today under high pressure. Warmer temperatures are expected for the coming week under southwest flow. Very little change was needed to the overnight forecast as calm and quiet weather continues under high pressure. Mostly clear skies are expected through the night with the exception of some patchy clouds with a crossing trough. Have kept morning lows on the lower side of guidance, which results in around 10 degrees below seasonal average. Mostly clear and cool conditions will continue Sunday into Sunday night under high pressure and lingering northwest flow.
on the northern periphery of broad upper level ridge over the Central/Southern Plains. as a potent upper level low (presently situated offshore British Columbia) meanders southward along the northern Pacific coast. With ridging aloft and southerly low-level flow, well-above normal temperatures (20-25F above climatology) will persist throughout the short-term period.
High pressure is expected to continue across the area through early this week.
In the upper levels, a trough will be over the region today and a ridge will build into the region tonight. At the surface, high pressure will be over the region with northeasterly low level flow and a cool, dry air mass in place.
1221 AM EST Sun Mar 7 2021 Dry and colder than average weather is expected today under high pressure. Warmer temperatures are expected for the coming week under southwest flow. Very little change was needed to the overnight forecast as calm and quiet weather continues under high pressure. Mostly clear skies are expected through the night with the exception of some patchy clouds with a crossing trough. Have kept morning lows on the lower side of guidance, which results in around 10 degrees below seasonal average. Mostly clear and cool conditions will continue Sunday into Sunday night under high pressure and lingering northwest flow.
1145 PM EST Sat Mar 6 2021 High pressure will maintain VFR conditions throughout the forecast as dry low level air remains in place. Large amplitude, longwave trough/ridge dipole is in place over North America this afternoon with Southeast Michigan residing within the transition zone between high and low geopotential heights.
Temperatures will once again rise into the 60s across the region, and likely a few degrees warmer than yesterday. While temperatures have been warmer as of late, and some buds are starting to bloom, I am not confident in how much into the spring growing season we truly are so will hold off on any mention of this in the HWO/graphics now. At the same time, a large closed upper-level low is expected to dive into the Desert Southwest and carve out a western mean longwave trough. A stout sub-tropical ridge will also build in over the Gulf of Mexico with subsequent height rises and continued warming over the area.
1002 PM MST Sat Mar 6 2021 An upper level ridge has brought unseasonably warm temperatures to southeast Wyoming and the western Nebraska Panhandle; highs are 10 to 20 degrees above normal today. Don't foresee changing conditions across this section of the region until the low-level jet diminishes around sunset.
borsum Upper ridge was in the process of breaking down. The cold front will switch winds to the west and northwest and provide some gusts of 30-45 mph briefly as the front passes. Sunday will be cooler behind the front but highs will still be above normal, with temperatures reaching the lower to mid 50s.
259 AM CST Sun Mar 7 2021 Northerly mid-level winds continue across the Mid-South this morning on the backside of a relatively deep trough over the East Coast. A narrow ridge is located over the Central CONUS building as far north as Hudson Bay. This ridge will expand over the next few days, resulting in anomalous 500 mb geopotential heights from the Intermountain West to the Mid-Atlantic region. Winds will be light in proximity to the surface anticyclone but will become more southerly tonight as the high slides east.
1228 AM EST Sun Mar 7 2021 High pressure west of the region will settle over the Ohio Valley early Sunday morning.
200 AM CST Sun Mar 7 2021 Another unseasonably cool day despite the approach of mid-level ridging, but it will be warmer than the previous 24hrs across the wrn 1/4 of the CWFA. Otherwise the general forecast pattern Mon-Thu has not changed, sw flow aloft will strengthen each day with the lee trof and low-level thermal ridge amplifying. Models continue to diverge after Thu wrt the large closed upper low that will move e across AZ/NM. GFS still suggest convection may develop across the PB Thu evening on a retreating dryline/low-level jet, possibly Fri and Sat evenings depending on which solution verifies wrt passage of the upper low.
1047 PM EST Sat Mar 6 2021 Water vapor imagery highlights a long wave trough axis over the eastern United States. High pressure spilling southeast through the Mississippi River Valley is downstream from a sharp upper level ridge axis east of the Rockies. A broad area of low pressure will slide southeast across the southern half of Florida tonight, pushing a frontal boundary into the offshore Gulf waters toward morning.
High pressure is centered over the mid-Mississippi Valley this morning.
High pressure builds into the region late, for calm or nearly calm winds after 01z-02z timeframe.
At the same time, low pressure will be developing across the Plains.