Aikyam-Lab/Synoptic-Bench huggingface dataset:
- Freezing rain tonight in the Havre and Harlem areas. - Meteorological Overview: An upper level ridge of high pressure will move eastward across MT today. An upper level disturbance will move eastward across the CWA tonight, as the upper level ridge moves to our east. Expect rain/snow in the mountains along the divide and then a mix of freezing rain/snow in the Havre/Harlem areas. With cold air trapped near the surface, freezing rain is expected in this area, thus a winter weather advisory has been issued for the Havre/Harlem areas.
Our normal highs run in the mid 50s north to the lower 60s south. Tomorrow night most sectors to the west of I-55 will bottom out above freezing, with eastern zones dipping below before sunrise.
318 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.
Still expecting freezing temps areawide by daybreak, with widespread frost. Expect freezing temps areawide again, as overnight lows will range from the upper 20s to lower 30s. Forecast highs will range from the mid 50s in our northern and eastern zones, to the low 60s across portions of East Texas.
312 AM CST Sat Dec 21 2024 - Slightly warmer temperatures today.
609 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.
311 AM MST Sat Dec 21 2024 - Unseasonably warm and dry conditions continue into the weekend with high pressure overhead.
933 AM EST Sat Dec 21 2024 Chilly morning as high pressure builds in from the north. Another reinforcing cold front from the north will usher in even cooler and drier air later today leading to overnight temperatures dipping into the 30s and 40s areawide.
High pressure will be moving into with strong cold air advection and breezy winds this afternoon through Sunday resulting in frigid wind chill temperatures tonight into Sunday morning.
Broad high pressure over northern Mexico extends into our area, diverting the polar jet track well to our north. Upper high breaks down early this week, retrograding west over the Pacific Ocean.
924 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 that has brought record or near record high temperatures over the past several days flattens this weekend with upper heights lowering a bit. However the low levels remain rather warm for record or near record highs continuing this weekend.
612 AM CST Sat Dec 21 2024 - Slightly warmer temperatures today.
642 AM EST Sat Dec 21 2024 (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.
526 AM CST Sat Dec 21 2024 (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.
(Today through Sunday) The front that moved through yesterday will cause high temps to remain in the 50s today and bring some of the area to the north just under freezing tonight.
644 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.
High pressure will build into the region from the NW and will result in dry conditions through the short term period (Sunday). Temperatures through Sunday will be slightly below climatological norms with forecast highs in the mid 40s to mid 50s (upper 30s to low 40s at the highest elevations in NE GA).
309 AM CST Sat Dec 21 2024 - There is a 20% chance of a light wintry mix of precipitation, including rain, freezing rain, or snow over north central SD Sunday afternoon and across northeastern SD into west central MN Sunday night. High pressure center to the northeast brings low-level warm air advection to the area and helps keep temperatures today normal to even above normal today. 20s to 30s are expected over the northeastern part of the forecast area, while we may see up to the low 40s over central South Dakota this afternoon. Attention then turns to the next low pressure center impacting the area on Sunday evening.
Slightly warmer Sunday but still several degrees below normal. For tonight and Sunday the clouds should keep decreasing into the evening and then become mostly clear as high pressure builds southeast from the upper Midwest and western Great Lakes. Sunday highs will be a few degrees warmer and with lighter winds. Chattanooga Airport, TN 26 46 29 50 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 23 42 25 49 / 0 0 0 0 Oak Ridge, TN 22 42 25 47 / 0 0 0 0 Tri Cities Airport, TN 17 37 22 47 / 0 0 0 0.
1034 mb high pressure near the IA/IL border and ridging across WI and western IL will drift eastward and be over lower MI and near the IN/OH border by 06Z/midnight tonight. Seasonably cool temps in the mid to upper 20s over central IL and lower 30s in southeast IL at 1030 am, will climb into the lower 30s over central IL and mid 30s in southeast IL by mid afternoon with fairly light NE winds under 10 mph. 07 High pressure is centered over the Upper Mississippi Valley early this morning with ridging extending south from there into central Illinois.
Satellite and regional radar composite imagery showing an elongated trough swinging into the Pac NW this morning with a broken line of precipitation crossing Oregon. Areas of light precipitation will transit across the region from late morning through this evening as the trough advances inland. Breezy E-SW winds will be gusty across higher terrain today and help with mixing down warmer air from aloft. Light valley rain and mountain snow will move west to east across the area along a cold front this afternoon and evening. Winds briefly becoming W-NW along and behind the cold front.
(Rest of today through Sunday) An overcast morning will make way for a little sunshine this afternoon as low to mid level clouds push on out ahead of building high pressure to our NW. Temperatures fall into the low 20s tonight, upper teens across the Plateau, with the decreased cloud cover. Sunday will be a pretty quiet weather day with sunny and dry conditions and slightly warmer temperatures. As the upper ridge shifts to the E, overall S flow will bring increasing moisture over middle TN.
1034-1037 mb high pressure near the IA/IL/WI border and ridging across WI and western IL will drift eastward and be over lower MI and near the IN/OH border by 06Z/midnight tonight. Seasonably cool temps in the mid to upper 20s over central IL and lower 30s in southeast IL at 1030 am, will climb into the lower 30s over central IL and mid 30s in southeast IL by mid afternoon with fairly light NE winds under 10 mph. 07 High pressure is centered over the Upper Mississippi Valley early this morning with ridging extending south from there into central Illinois.
335 PM EST Sat Dec 21 2024 High pressure builds over the region through the remainder of the weekend.
(Through Sunday) A cool airmass will remain over the region tonight through tomorrow as a ridge of high pressure settles in across all levels. Another night of near or just below freezing appears quite likely as a favorable radiational cooling pattern persists, particularly across our SW GA and SE AL counties. Low temperatures this evening will generally remain in the upper 20s to low 30s inland with our usual cold spots across SE AL and SW GA seeing the lower end of that range.
1255 PM EST Sat Dec 21 2024 Strong high pressure sliding to our north brings continued chilly conditions into the early part of the week ahead.
High pressure will remain over the region tonight which will lead to good radiational cooling conditions, so have gone a little cooler than most guidance for min temps tonight. Temps Should bottom out near the freezing mark for roughly the NE half of the forecast area. The axis of the high pressure will move east of SE Texas tomorrow allowing for southeast flow to return with a gradual increase in low level moisture as well. Expect a few high clouds tomorrow and max temps about 5 degrees warmer as compared to today.
233 PM CST Sat Dec 21 2024 - There is a low (15-25%) chance of a light wintry mix of precipitation, including rain and freezing rain over north central South Dakota Sunday morning into early Sunday afternoon, and freezing rain/sleet, or snow over northeastern SD into west central MN Sunday afternoon through early Sunday night. Portions of the west-river counties in this CWA are nosing up into the low 40s. Everything hinges on surface temperatures Sunday morning through Sunday evening, whether or not anything reaches the ground as plain rain or freezing rain/sleet. Again, low forecaster confidence in anything hazardous coming from this lower-bound PoPs potential Sunday/Sunday night.
Upper level analysis shows upper ridge axis centered over the Northern Rockies with dry westerly flow across the forecast area. Winds will gust to 40 mph across western SD through the afternoon hours, gradually tapering off with the loss of daytime heating/mixing and the trough axis shifting east.
1224 PM EST Sat Dec 21 2024 Cool high pressure is settingly in across the deep south this morning with temperatures slowly rising into the lower 40s. Even with full sun, temperatures will only get into the lower to mid 50s this afternoon with steady northerly winds.
1248 PM EST Sat Dec 21 2024 Cold and dry air will build in through the weekend as high pressure moves across the eastern U.
Current western CONUS ridging will continue to break down over the next day with a transition to a more zonal to quasi southwest flow regime through the coming week. By the end of the week there is ensemble support for more sustained central CONUS troughing with increasing opportunities for precipitation. With subtle lower level thermal ridging currently presiding over the region the present dry lower to mid level airmass should delay the onset of precip in eastern North Dakota until tomorrow afternoon when stronger forcing is nearby. Initially there looks to be favorable conditions south of HWY 200 in both MN and ND for freezing drizzle/rain.
The 12Z RAOBS across the CONUS highlighted falling heights at 500 and 200 mb across the southwestern United States as the mean layer ridge breaks down. The assault from the Atmospheric River pounding the Pacific states was too much for the ridge to handle. The latest surface analysis from WPC places a zonally stretched high pressure system across the Great Lakes and the Mississippi River Valley. The high pressure system centered over the Midwest will slide eastward towards the Eastern Seaboard. Meanwhile, lower heights will take over the CONUS, culminating in a positively tilted long wave trough dangling across Mexico and the Baja Peninsula.
(Rest of today through Sunday) Building high pressure will allow drier, cooler air to persist across the region. Deep-layered low pressure across the northeastern United States and eastern Canada will progress north and east through the weekend. Temperatures will fall into lower to mid 40s across inland Southwest Florida, the upper 40s along coastal Southwest Florida, and inland South Florida, and the lower to mid 50s in metro South Florida. A moderating trend will help temperatures warm a few degrees on Sunday with highs reaching into the lower to mid 70s across the area. Wind chill values tonight into early Sunday morning will dip into the upper 30s to lower 40s across Glades, Hendry, and Collier Counties with mid 40s to lower 50s across much of the rest of South Florida save for some higher values at the warmer Atlantic coast.
209 PM EST Sat Dec 21 2024 High pressure will lead to dry but cold conditions through the weekend. The flow will begin to back as we head into this evening and high pressure builds in from the west.
Even with clouds, Sunday will trend a few degrees warmer for most as southerly flow continues. Highs range from the low 60s north to the low 70s south.
1006 AM EST Sat Dec 21 2024 Cold and dry air will build in through the weekend as high pressure moves across the eastern U.
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-amplify 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.
For Sunday, a high plains lee trough will continue. Cooler highs are expected farther east across central Kansas. Not looking any any fire weather concerns as the lowest RH's are expected to be collocated with the weakest winds.
Flurries and isolated snow showers should continue across the higher eastern Tennessee mountains, southwest Virginia and northeast Tennessee a few more hours until the lowest levels squeeze out the remaining low level moisture. 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.
Sunday will remain mostly cool across the region, with temperatures ranging from the lower to upper 50s, perhaps some lower 60s across some of our southern zones. Sunday night will be slightly warmer than tonight, with lows ranging from the mid 30s to mid 40s.
South wind gusts to 25 to 30 mph are possible in the Big Country, Concho Valley and Crockett county by midday as a lee trough along the Texas and New Mexico border develops.
238 PM CST Sat Dec 21 2024 - Sunday will be warmer and dry with high temperatures ranging from the freezing mark near the Highway 14 corridor to the mid 40s along the Missouri River.
1232 PM 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.
1010 AM MST Sat Dec 21 2024 - Unseasonably warm and dry conditions continue into the weekend with high pressure overhead.
For the weekend, dry mild conditions are forecast with upper ridging and zonal flow forecast. The weak flow aloft is forecast to keep winds on the low side with speeds generally around 5 to 15 mph and a few gusts to 20 mph both days. Locales along and east of Highway 83 may stay in the 40's today with the cooler air mass currently in place forecast to slowly shift east. For tomorrow, mid to upper 60's are forecast ahead of an advancing cold front with some pre-frontal warming and the colder air mass forecast to be a bit slower to move in similar to recent fronts. Low temperatures both nights are forecast to be in the twenties and 30's, though Sunday night is forecast to be a bit warmer with lows more around 30.
An amplified pattern aloft persists with longwave troughing over much of the Eastern portion of the country while amplified ridging extends from over the Four Corners States north to over much of Montana. High temperatures will range from around 40 far northwest to readings in the lower 50s southeast. Longwave troughing will become positioned further east just offshore of the Eastern Seaboard overnight while amplified ridging builds eastward over much of the Plains and Midwest. A widespread freeze is forecast with readings from the lower 20s northeast to the mid 60s south. High temperatures will range from the upper 40s north and in the higher elevations east to readings in the low to mid 50s south and central.
246 PM EST Sat Dec 21 2024 Strong high pressure sliding to our north brings continued chilly conditions into the early part of the week.
1126 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.
(Tonight through Sunday night) Key Messages: - Increasing clouds and slightly warmer, but still pleasant temperatures. A weak easterly surface flow, and an increasing southerly low level flow overhead tonight, will usher moisture and warmer temperatures back across S TX.
Synopsis: Surface analysis this afternoon shows strong high pressure in place over Ontario, WI and IL. Aloft, Ridging was found over the Rockies, while a trough was in place over the east coast. This was resulting cooler NW flow aloft with subsidence across the region. Temperatures were in the low 30s. Through Sunday night, the strong high pressure system to the north of Central Indiana will remain the major player in control of Central Indiana's weather. Aloft, northwest flow is expected to remain in place as weak ridging builds toward Indiana on Sunday. The larger upper level pattern will be a trough, progressing eastward that will have several short wave troughs embedded within.
1059 AM CST Sat Dec 21 2024 - Slightly warmer temperatures today.
High pressure at the surface extends across the Mississippi River Valley this afternoon with a light northerly flow underneath mostly sunny to partly cloudy skies. Surface ridging slides east through Sunday beneath northwest flow aloft.
Dry and seasonably cold conditions (~5 to 10 F below normal) with freezing overnight temperatures can be expected.
1052 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.
1119 AM CST Sat Dec 21 2024 - There is a 20% chance of a light wintry mix of precipitation, including rain, freezing rain, or snow over north central SD Sunday afternoon and across northeastern SD into west central MN Sunday night. High pressure center to the northeast brings low-level warm air advection to the area and helps keep temperatures today normal to even above normal today. 20s to 30s are expected over the northeastern part of the forecast area, while we may see up to the low 40s over central South Dakota this afternoon. Attention then turns to the next low pressure center impacting the area on Sunday evening.
Elsewhere temperatures have managed to rise into the lower 40s, due to abundant sunshine. Expecting lows overnight to be the lowest where cloud cover has been so prevalent today. Elsewhere, expect lows to drop into the lower to mid 20s. If cloud cover doesn't break up it will likely be warmer than expected.
A slightly cooler morning is in the forecast for tomorrow, but then highs warm up into the mid 60s to lower 70s.
508 PM EST Sat Dec 21 2024 (Through Sunday) A cool airmass will remain over the region tonight through tomorrow as a ridge of high pressure settles in across all levels. Another night of near or just below freezing appears quite likely as a favorable radiational cooling pattern persists, particularly across our SW GA and SE AL counties. Low temperatures this evening will generally remain in the upper 20s to low 30s inland with our usual cold spots across SE AL and SW GA seeing the lower end of that range.
High pressure is expected to remain over the Central CONUS tomorrow bringing dry conditions and above normal temperatures similar to what the western half of the forecast area saw today. Temperatures are expected to warm into the low to mid 60s with northwest winds around 10 mph.
839 PM CST Sat Dec 21 2024 Latest surface analysis places a 1036 mb ridge of high pressure over Ontario.
727 PM EST Sat Dec 21 2024 Strong high pressure sliding to our north brings continued chilly conditions into the early part of the week.
701 PM EST Sat Dec 21 2024 High pressure will lead to dry but cold conditions through the weekend. The flow will begin to back as we head into this evening and high pressure builds in from the west.
upper level ridging is currently progressing across Colorado this afternoon. Temperatures have warmed nicely through the 50s and into the lower 60s across the lower elevations, while temperatures are in the 40s over the San Luis Valley. The main impact will be breezy conditions across the higher elevations overnight, mainly for the Central Mountains. Overnight lows will fall into the 20s along the lower Arkansas River Valley, and upper 30s to low 40s along the mid slopes of the Eastern Mountains, while the San Luis Valley falls into the single digits. Enhanced mixing will help push temperatures into the lower to mid 60s across the Plains.
646 PM EST Sat Dec 21 2024 Cold air will continue to filter into the area over the next couple of days high pressure remains in control of the area. Broad troughing is still in place across the eastern Seaboard, but heights will increase subtly now that the central trough axis is east of us. and most locations will see lows in the lower 20s tonight. So, we'll be starting out cold on Sunday morning, and highs tomorrow are expected to be a category colder than today's, despite clear skies and continuing high pressure.
535 PM CST Sat Dec 21 2024 (Tonight through Sunday night) Key Messages: - Increasing clouds and slightly warmer, but still pleasant temperatures. A weak easterly surface flow, and an increasing southerly low level flow overhead tonight, will usher moisture and warmer temperatures back across S TX.
With high pressure to our north, a notable MSLP gradient has also remained in place. Slightly warmer Sunday but still several degrees below normal. For tonight and Sunday the clouds should keep decreasing into the evening and then become mostly clear as high pressure builds southeast from the upper Midwest and western Great Lakes. Sunday highs will be a few degrees warmer and with lighter winds. Chattanooga Airport, TN 27 46 29 50 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 25 42 25 49 / 0 0 0 0 Oak Ridge, TN 24 42 25 47 / 0 0 0 0 Tri Cities Airport, TN 21 37 22 47 / 0 0 0 0.
1000 PM EST Sat Dec 21 2024 Cold air will continue to filter into the area over the next couple of days high pressure remains in control of the area. Broad troughing is still in place across the eastern Seaboard, but heights will increase subtly now that the central trough axis is east of us. and most locations will see lows in the lower 20s tonight. So, we'll be starting out cold on Sunday morning, and highs tomorrow are expected to be a category colder than today's, despite clear skies and continuing high pressure.
Sunday will be sunny and cool with highs in the low to mid 40s. For those of you who are doing some last minute Christmas shopping (looking at myself), bundle up out there! (Rest of today through Sunday) An overcast morning will make way for a little sunshine this afternoon as low to mid level clouds push on out ahead of building high pressure to our NW. Temperatures fall into the low 20s tonight, upper teens across the Plateau, with the decreased cloud cover. Sunday will be a pretty quiet weather day with sunny and dry conditions and slightly warmer temperatures. As the upper ridge shifts to the E, overall S flow will bring increasing moisture over middle TN.