Aikyam-Lab/Synoptic-Bench huggingface dataset:
- Another cold front will drop daytime temperatures closer to seasonal normals for Friday and Saturday. - Showers and a couple of thunderstorms will return to the region on Christmas Eve with the passage of a cold front. Other than some passing cirrus on the southwestern flank of an upper trough, skies will remain mostly clear. Efficient radiational cooling processes will help temperatures to bottom out in the upper 20s to low 30s, with most everyone observing sub-freezing temperatures. Make sure to bring in or cover any sensitive plants! Over the rest of the weekend, broad upper level ridging and returning southerly flow will result in increased low-level WAA and an influx of richer moisture spreading across the region.
High pressure continues to dominate, with inverted conditions in valleys. Dense fog has formed in portions of the lower Treasure Valley, basins in SE Oregon, and mountain valleys in the central mountains, so the dense fog advisory will remain. A trough on Saturday is on track to mix things up, no updates to the previous forecast.
1115 PM CST Thu Dec 19 2024 (This evening through Friday Night) Northwesterly flow remains in place today as a mid/upper trough digs through the Northern Plains/Great Lakes. The aforementioned mid/upper level trough will dig through the Ohio Valley on Friday. Low level ridging building over Western Texas with the aforementioned disturbance to the northeast will tighten the pressure gradient, invigorating CAA. Freezing temperatures will be likely across portions of the Brazos Valley/Piney Woods area for Saturday morning.
Much cooler drier air will advect over the forecast area today on gusty northwest winds under mostly clear skies. A secondary cold front will push down the peninsula on Saturday with a reinforcing surge of colder drier air.
(This afternoon through Friday) Dry, cooler air mass in place today will get a reinforcing boost early Friday as a second cold front pushes through the state. The reinvigorated northwest flow will yield a breezy Friday and cooler temperatures through the weekend.
1053 PM CST Thu Dec 19 2024 (Tonight through Friday night) Key Messages - Continued dry and clear conditions through Friday - A weak cold front will move through the region on Friday with a light freeze forecast Saturday morning across the Hill Country Chamber of commerce weather is ongoing today across south-central Texas with sunny skies, low dew points, and temperatures in the 60s. A weak cold front is forecast to backdoor into the region from the northeast on Friday. Colder conditions are expected tomorrow night across the Hill Country, I-35 corridor, and Coastal Plains, where low temperatures are forecast in the low to mid 30s, and a few drainage spots in the Hill Country in the upper 20s.
1031 PM CST Thu Dec 19 2024 Updated at 830 PM CST Thu Dec 19 2024 - Strong cold front moving through will result in a chilly Friday. (The rest of tonight) Regional surface analysis and trends indicate a southward advancing cold front, currently observed from central KS, eastward into western MO. Winds will turn out of the north and become breezy following the front, with frequent gusts around 20-25 mph, perhaps gustier in the higher terrain areas.
(This evening through Friday night) Clearing skies and calming winds tonight in addition to temperatures starting out cooler than forecast will likely allow radiational cooling to take low temperatures below NBM guidance, closer to low 40s to upper 30s. As we move into Friday, temperatures should be largely diurnally driven with a quick warm up into the 60s ahead of the next, much stronger cold front that arrives late in the day.
1058 PM CST Thu Dec 19 2024 (Tonight through Friday night) Key Message: - A dry "backdoor" cold front arrives Friday night. Elsewhere, temperatures will settle into the low- to-mid 50s. However, a reinforcing push of drier air will arrive Friday night as a dry "backdoor" cold front moves into the region. In the wake of this front, overnight lows will become notably cooler.
1204 AM CST Fri Dec 20 2024 (This evening through Saturday) Another cold front will be dropping down into Arkansas tonight. Considerably cooler and drier air will be moving in behind the front, along with gusty N/NW winds.
- Breezy winds today will precede cooler air that remains through the weekend.
Looking from a more regional perspective, a cold front was quickly translating SEwrd across Srn MO/Nrn OK and had just entered far NWrn AR. An expansive area of high pressure will settle into portions of the region Friday night which will result in efficient radiational cooling once winds go light/variable and or calm. Cold temperatures will prevail on Saturday thanks to close proximity of high pressure in conjunction with NE surface winds beneath NW upper flow.
511 AM CST Fri Dec 20 2024 - Much cooler today with rising temperatures through the weekend.
- Showers and a few thunderstorms will return to the region on Christmas Eve with the passage of a cold front. Other than some passing cirrus on the southwestern flank of an upper trough, skies will remain mostly clear. /Issued 306 AM CST Fri Dec 20 2024/ /Saturday Onward/ Cooler temperatures will continue into the weekend in the wake of Friday's cold front. High temperatures will be in the 50s for much of the region Saturday afternoon, with portions of Central Texas and the Big Country reaching into the low to mid 60s.
(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.
In the wake of the cold front a >1030mb high will build into our CWA from the north.
630 AM EST Fri Dec 20 2024 A developing low-pressure center off of Cape Hatteras will move to the northeast away from the region today.
345 AM MST Fri Dec 20 2024 - Unseasonably warm and dry conditions continue into the weekend with high pressure overhead. High pressure remains overhead today and tomorrow leading to seasonably warm and dry conditions.
Cooler temperatures will favor a fluffier snow variety with breezy winds leading to blowing of falling snow.
A weak cold front will move into the area during the day, but will have little affect other than slightly cooler temperatures compared to yesterday.
521 AM CST Fri Dec 20 2024 Updated at 344 AM CST Fri Dec 20 2024 - Much colder temperatures today in the wake of a strong cold front that moved through overnight.
- Another cold front will drop daytime temperatures closer to seasonal normals for Friday and Saturday. - Showers and a few thunderstorms will return to the region on Christmas Eve with the passage of a cold front. Other than some passing cirrus on the southwestern flank of an upper trough, skies will remain mostly clear. /NEW/ /Saturday Onward/ Cooler temperatures will continue into the weekend in the wake of Friday's cold front. High temperatures will be in the 50s for much of the region Saturday afternoon, with portions of Central Texas and the Big Country reaching into the low to mid 60s.
However, this wave will usher in much cooler air than we have had this week. Overall active pattern is expected to continue through the period, with a cold weekend before temperatures warm well above freezing and last through the Christmas holidays. Later in the period, precipitation could return to the area, however with temperatures above freezing, expect this to fall mostly as rain.
As the last of the low clouds erode over the next couple of hours, there will then be plenty of sunshine for the second half of the day with overall pleasant conditions expected as highs reach the upper 60s to mid 70s before highs drop roughly 10 degrees by tomorrow in the wake of the reinforcing cold front that sweeps through tonight. Much cooler drier air will advect over the forecast area today on gusty northwest winds under mostly clear skies. A secondary cold front will push down the peninsula tonight and Saturday with a reinforcing surge of colder drier air.
301 AM PST Fri Dec 20 2024 * Valley inversions and areas of freezing fog linger through this morning. Residual inversions will likely yield another morning of low stratus and freezing fog for the Honey Lake Basin, Smoke Creek/Black Rock deserts, the Martis Valley, and the Tahoe Basin before mixing out this afternoon. The latter appears to be the most impactful as southwest/west winds approach 35-45 mph across lower elevation Sierra communities and the Sierra Front Saturday morning/afternoon with wind gusts exceeding 90 mph along exposed Sierra ridgetops.
This front will bring another even colder blast with it bringing our lows down to freezing again. The highs will be quite different between today and Sat as highs will fall back from the mid to upper 60s today to the mid upper 50s Sat. Freezing temps for lows over the northern half of the area and upper 30s and lower 40s southern half tonight and Sat night.
535 AM CST Fri Dec 20 2024 (Today through Saturday) Currently between two cold fronts, with generally clear skies and cooler temperatures. Cloud cover in the north could result in temperatures a few degrees warmer in the northeast, but will hang with the consensus on the temperatures right now.
410 AM CST Fri Dec 20 2024 - Cooler today with highs in the 50s. (Today and tonight) A cold front has now completely moved through the area and light northeasterly winds in its wake will continue through the overnight hours. Winds will switch back to south- southeasterly by this afternoon and an upper ridge will start working its way in. If the winds switch sooner, it may be slightly warmer.
Surface winds remain mainly out of the north to northeast today with winds above the surface out of the north as a cold front sinks south through the eastern half of the country. This will keep our temperatures to near normal levels today, generally in the lower 70s.
(Rest of Today) Patchy dense fog and freezing fog across most of northern Alabama and southern middle Tennessee has dissipated with the exception of northeast Alabama where visibilities are still near zero. A chilly and breezy day is in store for the Tennessee Valley as a quick moving cold front sweeps through the area this morning.
Updated at 344 AM CST Fri Dec 20 2024 - Much colder temperatures today in the wake of a strong cold front that moved through overnight.
425 AM MST Fri Dec 20 2024 - Unseasonably warm and dry conditions continue into the weekend with high pressure overhead. High pressure remains overhead today and tomorrow leading to seasonably warm and dry conditions.
528 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.
(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.
A cold front pushed through the region this morning with a freshening northwesterly flow in its wake. The stronger flow and better mixing, combined with slightly drier air, has cleared the low clouds and fog that was observed over portions of the area earlier this morning. Given the nature of cold air advection over relatively warmer waters, our winds may be a tad underdone and we could see a brief breezy period overnight with north to northwesterly winds of 15 to 20 mph (with some higher gusts possible). Low temperatures tonight should be in the low to mid 60s, highs on Saturday in the lower 70s.
Upper level ridging will dominate our weather through the weekend.
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.
High pressure will continue to build over the next several days, and thus the unseasonably warm and dry weather will also continue. Notably, high elevation locations, as high as 10,000ft, could see temperatures near to even above freezing (60% chance of >32F above 10,000ft).
1013 AM CST Fri Dec 20 2024 Updated at 1009 AM CST Fri Dec 20 2024 - Much colder temperatures today in the wake of a strong cold front that moved through overnight.
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.
Thought about doing something similar for temperatures tomorrow, however, a cold front has moved through the region today, currently located near Nacogdoches to Natchitoches this afternoon. This cold front will bring an additional push of cooler temperatures for tomorrow so have trended temperatures more with guidance there. This will help temperatures dip into the mid 20s across our northern zones to the lower and mid 30s across our southern zones. Low temperatures for tomorrow night will be similar in nature but slightly warmer and oriented differently. Upper 20s across our eastern zones to the lower and mid 30s across our western zones.
With at least a few hours of sunshine this afternoon, temperatures are still on track to reach into the mid 30s, though with the frequent northerly wind gusts blowing between 20-30 mph, it will feel much cooler than that.
- Warmer than average temperatures are favored through the forecast period for the vast majority of the Panhandles. (This evening through Saturday night) The panhandles finds itself between a broad high pressure system over the desert SW and a large trough off to the east. Both today and Saturday will see continued warmer than normal temperatures for both the day and overnight.
1048 AM CST Fri Dec 20 2024 (Rest of Today) Patchy dense fog and freezing fog across most of northern Alabama and southern middle Tennessee has dissipated with the exception of northeast Alabama where visibilities are still near zero. A chilly and breezy day is in store for the Tennessee Valley as a quick moving cold front sweeps through the area this morning.
(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.
1057 AM MST Fri Dec 20 2024 - Unseasonably warm and dry conditions continue into the weekend with high pressure overhead. High pressure remains overhead today and tomorrow leading to seasonably warm and dry conditions.
(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.
(This evening through Saturday) Weak cold front has sagged through West Central Texas with light northeast winds in its wake. Thus, will take lows down to near freezing again for many of the cold air drainage locations from the Concho Valley east and southeast into the Hill Country and Heartland.
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.
A fast moving weather system will bring cooler temperatures and a chance for light rain and snow showers on Christmas Day.
233 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.
So, south to southwest surface flow overnight will give way to north behind the trough and eventually toward east by end of day. Warmer temperatures tonight with the southerly surface component will result in warmer overnight lows in line with NBM and MOS adjusted for local effects, e.
Mesoscale Update:A cold frontal boundary will continue swinging throughout the lower MS valley region. Conditions will be calm throughout the day as high temperatures will be cooler as post frontal air moves into the region dropping temps by a few degrees. High temperatures will range from the upper 40s across the north to the lower 60s across the south. In the wake of the cold front a >1030mb high will build into our CWA from the north.
and a ridge-cutoff low complex over the Rockies and the Baja Peninsula. Surface observations and visibile/infrared satellite imagery place a pair of surface cyclones near the Ohio River Valley and east of the Carolinas. In past couple of hours, northwest winds at the Reef increased to 15 to 20 knots as the first of a pair of weak cold fronts cleared the Keys.
- Showers and a few thunderstorms will return to the region on Christmas Eve with the passage of a cold front. /Issued 306 AM CST Fri Dec 20 2024/ /Saturday Onward/ Cooler temperatures will continue into the weekend in the wake of Friday's cold front. High temperatures will be in the 50s for much of the region Saturday afternoon, with portions of Central Texas and the Big Country reaching into the low to mid 60s.
Strong cold air advection will drop temperatures below freezing tonight, except for locations adjacent to the Gulf of Mexico. As the cool and dense air spills into the Gulf, northwest to north winds will peak in the low 20s knots, so a Small Craft Advisory is in effect.
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.
Underneath the high and mid level clouds are low clouds in portions of the Umpqua Basin, Illinois and Rogue Valley, Applegate Valley and Grants Pass area with patchy fog in these locations. It's possible the low clouds could linger into early this afternoon, if not longer. The next focus of concern will be late tonight into Saturday as a stronger cold front approaches the coast.
1126 AM CST Fri Dec 20 2024 - Cooler today with highs in the 50s. (Today and tonight) A cold front has now completely moved through the area and light northeasterly winds in its wake will continue through the overnight hours. Winds will switch back to south- southeasterly by this afternoon and an upper ridge will start working its way in. If the winds switch sooner, it may be slightly warmer.
With at least a few hours of sunshine this afternoon, temperatures are still on track to reach into the mid 30s, though with the frequent northerly wind gusts blowing between 20-30 mph, it will feel much cooler than that. Cooler temperatures will favor a fluffier snow variety with breezy winds leading to blowing of falling snow.
Temps have already reached the upper 50s from Livingston (today's daily record has been broken) to Harlowton, and the lower 50s at Roundup and Billings. Temps will remain below freezing near the Dakotas border, east of where the downslope flow is reaching. Building upper ridge will keep things dry and warm through Saturday. In fact, tomorrow looks a little warmer than today, though cloud cover could have a limiting effect (some uncertainty here, but the chances of reaching 60F are non-zero west of Rosebud County). Current indications are that surface temps will warm sufficiently to keep ptype as rain in our north/northeast, but the risk of light freezing rain near Ingomar-Miles City will need to be monitored as well.
216 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.
(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.
157 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.
316 PM EST Fri Dec 20 2024 * Few lingering snow showers/flurries and isolated freezing drizzle this evening. Temperatures were around the freezing mark, plus or minus a degree on either of 32. It was blustery, with wind gusts of 15 to 25 mph producing wind chill values in the low to mid 20s. There is also a small chance we could see a brief period of freezing drizzle this evening but drier air will filter in with the strong cold air advection and northwest flow through the rest of the overnight and into the morning. If skies clear quickly temperatures could be warmer but for now kind of went with a reasonable solution based on the potential for lingering cloud cover.
1156 AM CST Fri Dec 20 2024 Updated at 1156 AM CST Fri Dec 20 2024 - Much colder temperatures today in the wake of a strong cold front that moved through overnight.
1221 PM CST Fri Dec 20 2024 Mesoscale Update: A cold frontal boundary will continue swinging throughout the lower MS valley region. Conditions will be calm throughout the day as high temperatures will be cooler as post frontal air moves into the region dropping temps by a few degrees. High temperatures will range from the upper 40s across the north to the lower 60s across the south. In the wake of the cold front a >1030mb high will build into our CWA from the north.
1120 AM CST Fri Dec 20 2024 - Much cooler today with rising temperatures through the weekend.
1020 AM EST Fri Dec 20 2024 A developing low-pressure center off of Cape Hatteras will move to the northeast away from the region today.