Aikyam-Lab/Synoptic-Bench huggingface dataset:
1118 AM CST Fri Dec 20 2024 (Today through Saturday) Key Messages - A weak cold front will reinforce cool and dry air today - A light freeze forecast Saturday morning across the Hill Country Cool air and slightly decoupled winds will allow for a few cold pockets in the mid 30s this morning. A moderate reinforcing cold front is slipping into our northern counties and will promote breezy conditions and additional cold air advection to trend our temperatures down slightly over the next 24-36 hours. Mostly clear skies and the low dew points through the short term will help with daytime warming, and near normal high temperatures are still forecast for both today and Saturday.
Winds are forecast to slacken a bit late this evening as they veer from NW to N in the wake of a cold front. /MC (Now through Saturday) A cooler and drier airmass will continue across the area today under northwest flow aloft. Another cold front will move through the area this afternoon and evening bringing and even colder airmass into the region with lows tonight falling into the upper 20s and low 30s inland to mid 30s along the coast. High temps on Saturday will only be in the low to mid 50s.
605 PM EST Fri Dec 20 2024 (Rest of today through Saturday) South Florida will enjoy dry and seasonably cool weather through the start of the weekend thanks in part to a mid-level trough set up over most of the Eastern Seaboard.
High pressure is overhead again today leading to temperatures a degree or two higher than this time yesterday.
Long wave troughing is set up over the eastern US and cold air has been filtering into Middle TN. The clouds will be sticking around overnight and that will help to keep things a bit "warmer" than if we were clear, it will still be cold with lows falling into the mid to upper 20s. A cold front is currently located over central Missouri, and behind this front, current temperatures are in the teens to mid-20s. That's not to discount our own cold temperatures which currently sit in the 30s to low-40s, but as this cold front moves through today, it will just reinforce our cold air.
522 PM CST Fri Dec 20 2024 (This evening through Saturday Night) A mid/upper level trough digging through the Ohio Valley will push a slog of cooler, drier air into SE Texas for tonight. With CAA reinvigorated and clear skies overhead, conditions will be cooler than this morning. Freezing temperatures will be likely across portions of the Brazos Valley/Piney Woods area for Saturday morning, with lows around Madisonville to Crockett falling into the upper 20s. Daytime temperatures across SE Texas will be a tad cooler that that of today, with highs in the upper 50s/60s.
A fast moving weather system will bring cooler temperatures and a chance for light rain and snow showers on Christmas Day. Here in the High Country, temperatures have touched 60, impressive.
308 PM MST Fri Dec 20 2024 - Unseasonably warm and dry conditions continue into the weekend with high pressure overhead.
745 PM EST Fri Dec 20 2024 A strong cold front brings breezy conditions this evening, along with a few showers across the northern forecast area. This will be followed by several days of cold weather with subfreezing temperatures at night. Cold front is currently moving through the area with a strong pressure gradient in place. Lingering showers and clouds across the northern portion of the forecast area with a strong upper trough moving through North Carolina but will continue to taper off over the area in the wake of the trough with northwest flow promoting deep layer dry air. Cold advection continues tonight with lows dropping into the low to mid 30s. Key Message(s): - Noticeably colder and drier this weekend with subfreezing overnight temperatures.
This cold front will cause freezing temps across most of the northern half of the area north of I-12. Still, only areas along and north of the I-12 corridor is expected to reach freezing tomorrow night.
pdf Forecast on track as secondary dry cold frontal passage still pushes through the region around midnight with a shift in the winds to North-Northwest under clear skies. Winds will shift to the North-Northeast on Saturday as high pressure builds north of the region and remain in the 10-15G20 mph range area-wide under sunny skies, but the colder air mass will hold temps below normal with highs only in the 50s. pdf Strong high pressure will build from the northwest through Tonight. Patchy frost will be possible well inland due to the temperatures falling to near freezing, but the coverage will be limited due to winds stirring in the lower levels.
510 PM CST Fri Dec 20 2024 (This afternoon through Saturday) A longwave trough axis is currently diving southward across much of the eastern CONUS on this last day of meteorological fall. The colder air is now moving into northwest Alabama behind a fast-moving dry cold front that stretches southwest from a clipper system moving across the Ohio Valley. We'll just be very cold and dry overnight with advection cooling sending temperatures down below freezing areawide, ranging from the mid 20s northwest to near 30 degrees elsewhere. With a cold northerly breeze and despite full sunshine, temperatures will struggle to reach the lower 40s at Haleyville, while Eufaula will hit the 50 degree mark by Saturday afternoon.
Upper air analysis shows a broad upper trough across the eastern seaboard and upper ridging over the northern Rockies. Warm air advection will continue overnight as the upper ridge slides eastward.
810 PM EST Fri Dec 20 2024 Strong high pressure will build in from the northern Plains through the weekend. The light showers have all dissipated except across the Laurinburg and Lumberton areas as the cold front pushed into the region. Post-frontal CAA will promote chilly highs in the lower to mid 40s Saturday afternoon.
705 PM EST Fri Dec 20 2024 An area of low pressure will move off to the east of the area tonight. High pressure will then move into the Great Lakes on Saturday, with dry but cold conditions expected through the weekend.
501 PM CST Fri Dec 20 2024 (Tonight through Saturday night) Key Message: - A dry "backdoor" cold front arrives tonight. A "backdoor" cold front is anticipated to move through the region later this afternoon into the evening, ushering in cooler and drier conditions. As high pressure builds over the region on Saturday, northerly winds will persist, maintaining sunny skies and relatively cooler conditions.
520 PM CST Fri Dec 20 2024 - Breezy winds will continue this afternoon and will subside overnight as high pressure continues to move into the region.
413 PM MST Fri Dec 20 2024 - Unseasonably warm and dry conditions continue into the weekend with high pressure overhead.
(Tonight) Overcast skies remain in place over much of the region this Fri evening, as a longwave upper trough pattern traverses eastward thru parts of the eastern CONUS. Underneath this cloud canopy, cooler air continues to spread into the area from the NNW, as a large dome of high pressure out of the northern Plains gradually builds east. A persistent northerly flow near 10-15 MPH may also result in wind chills overnight falling into the lower 20s.
521 PM CST Fri Dec 20 2024 - Warming Trend, Eventually Above Normal Temperatures - Light Rain Possible Through Middle of Week Long-wave trough axis is moving across the Great Lakes Region leaving our area under brisk, northwesterly upper-level flow. The subsidence has also been building a strong surface anticyclone and is pushing southward. However, this moves rather quickly and is progged to slide over the surface anticyclone.
Northwest flow continues to produce some snow showers across the higher elevations with snow flurries across the region. 5 inch or so central and northern low elevations but 1 to 4 inches in the advisory area and the highest elevations of the Smokies and farther north into Virginia 5 or 6 inches. Highs today were in the lower to mid 40s with temperatures early this afternoon dropping into the 30s in most locations by late afternoon. The higher eastern mountains may see another inch or so of snow but most higher elevations will see less accumulation Saturday morning.
Quiet weather continues across the region with high pressure in place over the region. We'll have one more day featuring high pressure before we get to a more active period of weather going into the Christmas holiday week. Daytime highs continue to run on the warmer side of normal in most locations with upper 30s and lower 40s although there area a few spots running a bit cooler due to snowpack and a bit more clouds.
(This afternoon through Saturday) Largely dry cold front will continue its trek through the Southeast through tonight, reinforcing the cooler air over the region.
- Weak, dry cold front Sunday night will usher in slightly cooler air, but still well above normal.
1) An amplified pattern across the CONUS with an upper ridge axis over the Rockies. 3) A deep trough over the northeast into the mid Atlantic. Temperatures were quite cold as of 1 am this morning in the low to mid 20s. Tonight: The upper level storm system currently off the west coast will begin pushing into the northern Rockies and will begin to flatten out the upper ridge. Lower in the atmosphere, low level warm advection will begin to increase in between the departing high pressure system to the east and developing low pressure in the plains ahead of this next system. Sunday: The upper level system will move into the plains along with a surface cold front.
1127 PM CST Fri Dec 20 2024 - There's around a 15% chance of freezing rain or snow Sunday evening over portions of northeastern SD.
1008 PM EST Fri Dec 20 2024 An area of low pressure will move off to the east of the area tonight. High pressure will then move into the Great Lakes on Saturday, with dry but cold conditions expected through the weekend.
Overnight tonight, any freezing temperatures are expected to be very brief, if 32 degrees is even reached. Saturday night/Sunday morning, both frost and freezing temperatures could be a bit more of a threat, as winds are expected to become nearly calm. This cold front will cause freezing temps across most of the northern half of the area north of I-12. Still, only areas along and north of the I-12 corridor is expected to reach freezing tomorrow night.
Continued cold air advection will support temps cooling to the high 20s and low 30s by sunrise. Low clouds should erode throughout the day however continued strong cold air advection from northerly winds and the passage of an additional short wave will limit afternoon highs to the low 40s.
High temperatures both Saturday and Sunday will be seasonal - in the lower to mid 70s.
The mid to upper level pattern will be dominated by a longwave trough over the Eastern U. with a ridge over the Western U. As the mid to upper trough over the east moves further east, a more zonal flow expected to set up over the Central and Western U. Still expecting enough ridging across our region to allow for winds to become fairly light or calm after sunset Saturday through daybreak Sunday morning, with another light freeze north of I-10.
1112 PM CST Fri Dec 20 2024 (This evening through Saturday Night) A mid/upper level trough digging through the Ohio Valley will push a slog of cooler, drier air into SE Texas for tonight. With CAA reinvigorated and clear skies overhead, conditions will be cooler than this morning. Freezing temperatures will be likely across portions of the Brazos Valley/Piney Woods area for Saturday morning, with lows around Madisonville to Crockett falling into the upper 20s. Daytime temperatures across SE Texas will be a tad cooler that that of today, with highs in the upper 50s/60s. The gradual loss of CAA will allow for temperatures to be a tad warmer overnight, through lows for Sunday morning will still be in the 30s/40s.
Upper level ridging will dominate our weather through the weekend. A wave-train will set-up beginning Sunday that will flatten this ridge.
333 AM EST Sat Dec 21 2024 Light snow will persist through this morning as low pressure passes offshore.
Light snow will continue through this morning in the higher elevations of Southwest Virginia and East Tennessee. Discussion: Snow showers will continue this morning in the higher elevations of Southwest Virginia and East Tennessee. Some light snow or flurries will be possible through morning but little to no accumulation is expected outside of the higher terrain.
This low is far enough north that the bulk of precipitation occurs across the central mountains, and to a lesser extent a portion of the eastern and southeast highlands. It will be breezy but with warmer temperatures, nothing really is expected in terms of blowing/drifting snow. Warmer temperatures are still forecast for today, but looking at 5 degrees cooler on average for Sunday.
- Another weak system will bring a chance for freezing rain and snow Sunday night.
1152 PM CST Fri Dec 20 2024 - There is a 20 to 40 percent chance of light freezing rain across much of western and central North Dakota on Sunday. There is a chance for freezing rain, but the probabilities remain around 20 to 40 percent chance for precipitation Sunday morning through the evening. There is a chance for snow along the International border and rain through the day as temperatures warm up above freezing. Freezing rain probabilities of 0. This will result in a light glaze if freezing rain accumulations occur. The whole area could be in the lower 30s to lower 40s by Christmas Day.
934 PM MST Fri Dec 20 2024 - Unseasonably warm and dry conditions continue into the weekend with high pressure overhead.
A secondary, reinforcing cold front has pushed through the Florida Keys. As expected we have an ongoing nocturnal surge coming off the mainland and is pushing across mainly the waters east of the Seven Mile Bridge. Temperatures overnight as of 2 AM are 5 to 10 degrees cooler than 24 hours ago with dew points are 10 points lower, making conditions feel much more comfortable.
1205 AM EST Sat Dec 21 2024 (Rest of today through Saturday) South Florida will enjoy dry and seasonably cool weather through the start of the weekend thanks in part to a mid-level trough set up over most of the Eastern Seaboard.
259 AM CST Sat Dec 21 2024 - Cooler today, with a warming trend with highs generally in the upper 20s to mid 30s through Christmas Day.
Low temperatures will range from the middle teens east of Highway 25 to the lower to upper 20s west of Highway 25. a broad upper level ridge axis slowly moves toward the area from the west. an 850mb thermal ridge strengthens over the area during much of the day with warming of 5F to 9F, ahead of a cold front. There will be some increase in high clouds but presently should be enough to prevent afternoon temperatures from rising into the lower to middle 60s.
Mostly clear skies and light winds were reported across the region as the area sat under a ridge of high pressure.
Surface winds shift back to the south as a series of sharp high amplitude troughs with limited distance between the two move into the central Plains and intermountain west Christmas Eve. The trend with the leading trough is for to to be slower and further west, which has led to a trend of decreasing rain chances during the day Christmas Eve for most areas, with the possible exception of SEMO. We don't get an actual frontal passage out of it though as the stronger approaching trough from the west starts to dominate the regional circulation.
A relatively amplified flow regime will continue over much of the CONUS through Saturday with a slowly progressive longwave trof centered through the eastern U. Temperatures will be warmer with highs rebounding into the 40s, near to 5+ degrees above normal.
Paired with the left exit region of an ushering jet, upper level support is there for some light snow in the northwest tonight, but the lack of moisture in the low levels will restrict this activities to flurries. Skies will struggle to clear out of the northeast for Saturday, keeping their highs in the low to mid 20s.
(Today through Sunday) The third cold front has now pushed south of the area and high pressure will continue to build in behind. This high pressure will remain in place for the weekend. With fairly good radiational cooling we will see low fall of into the low 20s north to mid to upper 20s in the south.
323 AM EST Sat Dec 21 2024 High pressure will build southeast into the central Great Lakes and middle Ohio Valley by tonight. The high will then move east on Sunday.
Strong high pressure at the surface will continue to build into the region from the northwest overnight, behind a cold front that now resides along the north central gulf coast.
High pressure is centered over the Upper Mississippi Valley early this morning with ridging extending south from there into central Illinois.
Early this morning, a rather amplified pattern continues across the country with a large area of deep layer troughing across the Mid- West and New England areas and strong ridging across the western CONUS.
Locations along and south of I-85 could hit the low 50s. We'll just be very cold and dry overnight with advection cooling sending temperatures down below freezing areawide, ranging from the mid 20s northwest to near 30 degrees elsewhere. With a cold northerly breeze and despite full sunshine, temperatures will struggle to reach the lower 40s at Haleyville, while Eufaula will hit the 50 degree mark by Saturday afternoon.
959 PM CST Fri Dec 20 2024 - Breezy winds will continue this afternoon and will subside overnight as high pressure continues to move into the region.
1107 PM CST Fri Dec 20 2024 - Warming Trend, Eventually Above Normal Temperatures - Light Rain Possible Through Middle of Week Long-wave trough axis is moving across the Great Lakes Region leaving our area under brisk, northwesterly upper-level flow. The subsidence has also been building a strong surface anticyclone and is pushing southward. However, this moves rather quickly and is progged to slide over the surface anticyclone. Most ensemble suites are showing upper 40s to lower 50s for inner- quartile temperatures for afternoon highs on most days, with lows generally in the lower to mid 30s.
(Today through Sunday) Latest ensembles and sfc analyses show sprawling high pressure dominating the SE CONUS, keeping a cool and drier air mass in place across the region through the rest of the weekend. SoFlo can expect continuing benign weather conditions with cooler air advection from the north keeping POPs in single digits and PWATs well below one inch. Afternoon highs today will struggle to reach the low 70s, while overnight lows will drop into the low-mid 40s inland and northern areas, and in the upper 40s to mid 50s near the coasts. Cooler feel-like-temps are possible with the northerly winds enhancing wind chill values a few degrees lower. By Sunday, NBM and ensembles agree in gradually migrating the ridge eastward, which will begin to shift winds across SoFlo to the NE.
1131 PM CST Fri Dec 20 2024 (Tonight through Saturday night) Key Message: - A dry "backdoor" cold front arrives tonight. A "backdoor" cold front is anticipated to move through the region later this afternoon into the evening, ushering in cooler and drier conditions. As high pressure builds over the region on Saturday, northerly winds will persist, maintaining sunny skies and relatively cooler conditions.
A reinforcing cold front is currently sliding south through the waters surrounding the Florida Keys. Unsurprisingly, KBYX radar is free of any precipitable echoes as dry air invades the lower levels of the atmosphere. Moderate to fresh northwest to north breezes will prevail throughout the overnight hours behind the cold front's passage. Temperatures later tonight and into early Saturday morning are expected to fall into the lower 60s with some upper 50s along the Upper Keys for a true winter feeling start to the weekend. Strong high pressure will build across the eastern United States Saturday through Sunday, resulting in a strengthening pressure gradient.
A weak wave breaks through the ridge on Saturday afternoon, with scattered showers during the afternoon and evening. Snow levels will generally be 6000-8000 feet on Saturday with the exception of the lower Treasure Valley and Baker County where snow levels of 4000-6000 feet expected.
1255 AM EST Sat Dec 21 2024 An area of low pressure will move off to the east of the area tonight. High pressure will then move into the Great Lakes on Saturday, with dry but cold conditions expected through the weekend.
An U/L trough along the east coast has aided in ushering in very cool weather across west central and southwest Florida. A secondary disturbance will push across the Tennessee Valley and mid Atlantic today with an associated cold front moving down the Florida peninsula. This will reinforce the much cooler drier air already in place across the forecast area. Temperatures will struggle to climb into the upper 50s today across the nature coast, around 60 to the lower 60s central, and mid to upper 60s south. A relatively cold night on tap tonight with overnight lows in the mid 30s north, and the lower to mid 40s central and south.
We still have some pesky low clouds left over from yesterday's frontal passage, but we should see some sunshine by this afternoon as the low clouds finally scatter out. Temperatures this weekend will remain quite chilly, but warmer weather will settle in soon.
1053 PM CST Fri Dec 20 2024 (Tonight) Overcast skies remain in place over much of the region this Fri evening, as a longwave upper trough pattern traverses eastward thru parts of the eastern CONUS. Underneath this cloud canopy, cooler air continues to spread into the area from the NNW, as a large dome of high pressure out of the northern Plains gradually builds east. A persistent northerly flow near 10-15 MPH may also result in wind chills overnight falling into the lower 20s.
342 AM EST Sat Dec 21 2024 Cold and dry air will build in through the weekend as high pressure moves across the eastern U.
Unseasonably strong ridge of high pressure hangs in there for one more day before a disturbance moving along the Canadian border flattens it into a more zonal pattern on Sunday.
623 AM EST Sat Dec 21 2024 Cold and dry air will build in through the weekend as high pressure moves across the eastern U.
- Freezing rain tonight in the Havre and Harlem areas.
238 AM MST Sat Dec 21 2024 KEY MESSAGES: - Quiet weather with warmer temperatures today - Freezing rain expected late tonight through Sunday afternoon. WEATHER PATTERN OVERVIEW: An upper ridge moves through the area today with dry weather and warmer temperatures. Warm air aloft combined with below freezing surface temperatures in most areas tonight and Sunday morning temperatures will allow for a period of freezing rain starting as early as 09z (2 am mst) Sunday in Phillips County and spreading east across most of the forecast area Sunday morning. The freezing rain will change to light rain as temperatures rise above freezing on Sunday before ending. 10 inch or more ice partially because temperatures there are expected to stay below freezing into most of Sunday afternoon and partially due to higher forecasted precipitation amounts.
505 AM CST Sat Dec 21 2024 - Warmer on Sunday. Some light freezing precipitation will be possible later Sunday afternoon into Sunday night near highway 14, but confidence on this is low and for now and amounts look fairly light as well.
The center of this high pressure was located over the Upper MS Valley. Synoptically, NW upper flow was in place between an upper ridge centered over the Rockies and an upper trough invof of New England. Going through the next couple of days, the ridge centered over the Rockies will de-amply with flow becoming more zonal across the nations mid-section. Near the surface, high pressure will begin to retreat towards the OH Valley and New England regions resulting in E/NE winds becoming S/SWrly winds by Sunday into Sunday night.
421 AM MST Sat Dec 21 2024 - Unseasonably warm and dry conditions continue into the weekend with high pressure overhead.