Aikyam-Lab/Synoptic-Bench huggingface dataset:
Weak trough moving through the region tonight will bring isolated chances for some sprinkle and flurries towards the Arizona/Utah state line. Areas to the northeast of the higher terrain will have the strongest winds through the night. Meanwhile, a stronger cut- off low pressure system churns off the coast of northern California. The stronger cut-off low pressure system will weaken as it moves inland and digs southeast this afternoon, passing by to our north during the overnight hours.
1126 PM CST Thu Dec 12 2024 - Low temperatures tonight drop into the -5 to -20 below zero, but with decreasing winds, with a low chance of wind chill values dropping below -30 below freezing.
1042 PM CST Thu Dec 12 2024 -Freezing drizzle remains a possibility for some locations tomorrow (Friday) midday and early afternoon.
1221 AM EST Fri Dec 13 2024 An arctic airmass will remain entrenched across the region tonight and Friday before warmer air builds into the Ohio Valley into the upcoming weekend.
Low levels will remain dry today and tonight due to high pressure that has settled over the area.
236 AM CST Fri Dec 13 2024 - Freezing rain likely west of the Illinois River Valley, with the great ice accumulations in Knox and Fulton counties, before transitioning to rain. 1 inch of freezing rain from near a Galesburg to Macomb line.
1141 PM CST Thu Dec 12 2024 (Rest of tonight) Mid-level westerly flow of 50-60 knots will gradually back to WSW and diminish in intensity overnight as an upper low (located across the central Pacific Coast of the U. Based on current surface observations, we have adjusted temps downward to reflect lows in the u20s-l30s and included a low chance for the development of patchy freezing fog (mainly across Cullman/Marshall/Dekalb/Jackson counties).
A period of freezing drizzle will be hard to rule out, especially north of I-70 during the late afternoon and early evening hours.
415 AM CST Fri Dec 13 2024 - There is a low probability (20%) for snow or freezing drizzle across portions of west central Minnesota late tonight into Saturday morning.
The main impacts with this passing system will be some lingering locally windy conditions this morning along the leeward side of the interior mountains of southern California, a period of cloudy skies this morning, and temperatures a few degrees cooler than yesterday.
642 AM CST Fri Dec 13 2024 - There is a low probability (20%) for snow or freezing drizzle across portions of west central Minnesota late tonight into Saturday morning.
500 AM CST Fri Dec 13 2024 (Today) Quiet/seasonably cool wx conditions prevail across the central TN Valley this early Fri morning, as high pressure moves into the mid/southern Atlantic states.
620 AM EST Fri Dec 13 2024 High pressure brings relatively dry conditions through Saturday.
645 AM EST Fri Dec 13 2024 Strong Canadian high pressure building across the Northeast will bring seasonably cool weather to the Carolinas today.
Mild temperatures are expected tonight with lows in the mid to upper 60s, except for the lower 70s at the beaches. Saturday will be warmer with highs in the lower 80s, except for the mid to upper 70s along the coast. The aforementioned cold front moves into central Texas on Saturday.
526 AM CST Fri Dec 13 2024 - Freezing rain likely west of the Illinois River Valley, with the great ice accumulations in Knox and Fulton counties, before transitioning to rain. 1 inch of freezing rain from near a Galesburg to Macomb line.
As a mid-level low moves across the northern plains on Saturday, a cold front will push through parts of Texas, but is likely to stall before moving through our area.
Rain chances remain on the lower side, but with the moisture we'll have across the area we can't rule out some light drizzle or showers, especially for our southeastern counties. A weak cold front is expected to approach the area overnight, pushing into our western most counties by tomorrow morning. Areas to the northwest of the front will see cooler morning temperatures, with lows closer to the mid 40s to low 50s.
Although it is still cooler outside, temperatures are already back in the mid 60s over the island chain compared to 24 hours ago when they were near 60. Winds have become more northeasterly, therefore, slightly warmer air is filtering in. GOES-16 Satellite depicts mostly clear conditions over the Lower Keys while the Middle and Upper Keys have more cloud coverage. As strong high pressure moves eastward through the eastern CONUS, the Keys can expect fresh to strong breezes to continue through the weekend. Late this weekend, the high will move offshore, giving some relief and weakening our winds. As the week progresses, more moisture could enter our area if a western trough moves west enough. Winds will remain strong from the northeast into the weekend, as a large high pressure area moves slowly eastward across the eastern United States.
Any precip chcs thru today and tonight wl stay mainly confined to far Wrn AR, where forcing invof the aprchg upper low and low-lvl WAA wl be greatest, though only isolated and elevated showers are anticipated. Temps thru the PD wl stay warm, generally warmer than nrml at most locations, e.
Low-level winds will turn northeasterly, bringing in a warmer and more humid airmass. Temperatures will be warmer than yesterday, with highs reaching the mid to upper 70s across most areas, and tonight's lows only dropping into the 60s. On Saturday, the low-level northeast winds will weaken but continue to pump in a warmer airmass over the region. Highs will be a few degrees warmer, reaching the mid to upper 70s.
A small high pressure system then rapidly follows up this dry weather system for the rest of Saturday. These downsloping winds will both bring in warmer air and warm up via compression. This in turn will be the driving force of the unseasonably warm temperatures for today which will see the highs in the 60s and even a rogue 70. Going into Saturday the high pressure will weaken the winds which will cause the temperatures to dip as the flow of warmer compressed air to the panhandles slows down.
606 AM EST Fri Dec 13 2024 (Today and tonight) A chilly start for this morning as high pressure at the surface will prevail through the day with northeast flow. Temperatures today will be in the low to mid 60s, and upper 60s/low 70s for the southeast Big Bend. Tonight, temps will be warmer than they have been the last few days with low in the upper 40s to low 50s.
604 AM CST Fri Dec 13 2024 - Cool mid-level temperatures and an advancing cold front may foster isolated showers or thunderstorms after midnight Saturday morning.
Clouds will return through the course of Saturday due to low-level moisture advection and the approach of a second and stronger upper trough/associated front. The timing of the trough/front will keep much of the state rain-free during the daytime hours (perhaps a few light showers begin to affect northwest Alabama late in the afternoon) based on GFS/ECMWF ensembles.
Elsewhere, area south and west of Hwy 49 will see highs in the low 60s. As this aforementioned trough continues to move east, a closed low will begin to develop on the northern periphery of the trough axis heading into Saturday. The cold front associated with closed low will track east towards the ArkLaMiss area, but should stall out to our northwest.
Active pattern continues as an upper level troughs look to bring several rounds of snow showers to the Silver State this week.
A mid-upper level low pressure will dip down from the Pacific NW towards the Rockies today. At the surface, the combination of low pressure on the lee side of the Rockies and high pressure over the SE has resulted in a tightening pressure gradient over SE Texas and consequently moderate onshore flow. Highs will be in the low to mid 60s north of I-10. HREF shows more of an organized line of showers developing across Central Texas and moving east into SE Texas during the morning hours of Saturday in conjunction with the trough axis of the main upper low. Models continue to show a cold front stalling north of the CWA for part of the day Saturday, before pushing north later in the day.
With no re- enforcing northerly winds, moisture and warmer temperatures will gradually lift north. This will result in highs slowly climbing into the low 60s today and then mid to uppers 60s on Saturday.
It's still a chilly night for Florida standards, but the overnight temperatures are coming in around 5-10 degrees warmer than 24 hours ago. The lows have dipped into the lower 40's over the Nature Coast and mid 40's to mid 50's for central and southwest Florida. Near average temps expected today topping out in the low to mid 70's and lows in the 50's for Friday night into Saturday morning. A stronger high pressure center moves over New England by Saturday morning keeping continued northeast winds over the area. High pressure over the eastern seaboard ridges over Florida and into the Gulf of Mexico through the period.
630 AM EST Fri Dec 13 2024 It's still a chilly night for Florida standards, but the overnight temperatures are coming in around 5-10 degrees warmer than 24 hours ago. The lows have dipped into the lower 40's over the Nature Coast and mid 40's to mid 50's for central and southwest Florida. Near average temps expected today topping out in the low to mid 70's and lows in the 50's for Friday night into Saturday morning. A stronger high pressure center moves over New England by Saturday morning keeping continued northeast winds over the area. High pressure over the eastern seaboard ridges over Florida and into the Gulf of Mexico through the period.
854 AM EST Fri Dec 13 2024 Strong Canadian high pressure building across the Northeast will bring seasonably cool weather to the Carolinas this afternoon.
1034 AM CST Fri Dec 13 2024 - There is a low probability (20%) for snow or freezing drizzle across portions of west central Minnesota late tonight into Saturday morning.
The low-level winds remain breezy, from the northeast, thus bringing in a warmer and more humid airmass. Moving into the weekend, the low-level, northeasterly winds will weaken, but continue to pump in a warmer airmass over the region.
In fact, some locations across Texas county are still below freezing at the time of this writing! Winds have also been lowered slightly given observational trends and overall guidance suggesting winds will not be as strong as previously forecast. A small high pressure system then rapidly follows up this dry weather system for the rest of Saturday. These downsloping winds will both bring in warmer air and warm up via compression. This in turn will be the driving force of the unseasonably warm temperatures for today which will see the highs in the 60s and even a rogue 70. Going into Saturday the high pressure will weaken the winds which will cause the temperatures to dip as the flow of warmer compressed air to the panhandles slows down.
Skies have cleared across Arizona as a s/wv ridge moves into position, following our s/wv trough that moved through overnight and earlier today. Wind gradients behind the trough are all but collapsed, but there will be some lingering breezes over Apache County for the next few hours.
Temperatures will warm from today due to warm advection, with overnight temperatures remaining steady in the low to mid 60s, and daytime highs on Saturday in the low to mid 70s, both of which well above normal for this time of year.
1243 PM EST Fri Dec 13 2024 (Today and tonight) A chilly start for this morning as high pressure at the surface will prevail through the day with northeast flow. Temperatures today will be in the low to mid 60s, and upper 60s/low 70s for the southeast Big Bend. Tonight, temps will be warmer than they have been the last few days with low in the upper 40s to low 50s.
- Rain moves in from southwest to northeast Saturday evening with the chance for freezing rain/wintry mix at the onset.
235 PM CST Fri Dec 13 2024 -Freezing drizzle remains possible across far northern KS this afternoon and this evening.
Key Message(s): - Cool high pressure will yield another calm afternoon and overnight. Key Message(s): - Dry Saturday with cooler than normal temperatures.
1206 PM CST Fri Dec 13 2024 - Cool mid-level temperatures and an advancing cold front may foster isolated showers or thunderstorms after midnight Saturday morning.
159 PM CST Fri Dec 13 2024 - Warmer temperatures are expected between tonight and the weekend.
1036 AM CST Fri Dec 13 2024 - Freezing rain likely west of the Illinois River Valley, with the great ice accumulations in Knox and Fulton counties, before transitioning to rain. 1 inch of freezing rain from near a Galesburg to Macomb line.
Now that winds have come down just a little bit, conditions are a little more pleasant along the Florida Keys this morning! Surface observations are reporting northeasterly sustained winds of 10 to 15 mph in the Upper Keys and generally 15 to 20 mph in the Lower and Middle Keys with occasional gusts near 25 mph. Visible satellite shows the sun shining in the Lower and most of the Middle Keys, and this can help to take the edge off of the chilly breeze for those sensitive to it. From synopsis, strong northeast winds will continue across the Keys coastal waters through the end of the week, and into this weekend as a large high pressure area moves slowly eastward across the eastern United States.
352 PM EST Fri Dec 13 2024 High pressure builds across the region, bringing a brief period of dry but cold conditions into the weekend. As strong low level ridging and subsidence builds east into our region, the clouds should erode, especially midnight to daybreak.
(Rest of Today) Surface analysis this morning continues to shows high pressure centered over the Great Lakes region but encompassing much of the Eastern US.
Efficient warming is anticipated, with temperatures averaging close to 10 degrees warmer by the afternoon. It's still a chilly night for Florida standards, but the overnight temperatures are coming in around 5-10 degrees warmer than 24 hours ago. The lows have dipped into the lower 40's over the Nature Coast and mid 40's to mid 50's for central and southwest Florida. Near average temps expected today topping out in the low to mid 70's and lows in the 50's for Friday night into Saturday morning. A stronger high pressure center moves over New England by Saturday morning keeping continued northeast winds over the area. High pressure over the eastern seaboard ridges over Florida and into the Gulf of Mexico through the period.
This will be apparent in a slight increase in overnight lows with lows only dropping into the high 30s.
The low clouds will return to much of the area tonight and Saturday morning.
Freezing rain, sleet, and snow are all possible precipitation types.
259 PM EST Fri Dec 13 2024 Broad high pressure will build into the region over the weekend for fair weather and temperatures running below normal.
1201 PM EST Fri Dec 13 2024 Strong Canadian high pressure building across the Northeast will bring seasonably cool weather to the Carolinas this afternoon.
1053 AM CST Fri Dec 13 2024 (Rest of Today) Surface analysis this morning continues to shows high pressure centered over the Great Lakes region but encompassing much of the Eastern US.
With the cloud cover, temperatures tonight will stay above freezing. (Saturday Night through next Friday) Showers will continue to spread eastward Saturday night ahead of a trough axis.
1248 PM CST Fri Dec 13 2024 - There is a low probability (20%) for snow or freezing drizzle across portions of west central Minnesota late tonight into Saturday morning.
1235 PM EST Fri Dec 13 2024 High pressure brings relatively dry conditions through Saturday.
Then a deeper trough axis and associated cold front will begin to push into the Midsouth region tomorrow morning. Clouds will return during the day tomorrow ahead of the approaching trough axis. Meanwhile, low-level ridging will remain established over the Mid-Atlantic region which will develop a cold air wedge at the surface. The cold air wedge will cause a temperature gradient to develop tomorrow afternoon in which pre-frontal temperatures will be warmer in the west, while cooler air in our east will filter in from the Appalachians. Will see highs ranging from the lower to mid 60s west to mid to upper 50s east.
922 PM EST Fri Dec 13 2024 High pressure builds across the region, bringing a brief period of dry but cold conditions into the weekend. As strong low level ridging and subsidence builds east into our region, the clouds should erode, especially midnight to daybreak.
Deep low pressure off the PacNW coast with a cold front making its way onshore late this afternoon.
535 PM CST Fri Dec 13 2024 -Freezing drizzle remains possible across far northern KS this afternoon and this evening.
The gusty winds are in response to a jet streak associated with the closed low being somewhat orthogonal to our mountain ranges, especially the eastern mountains such as the Wet Mountains and the Sangre de Cristo Mountains. Low temperatures will reach the low to mid 20's lee of the mountains and plains. For tomorrow, upper ridge sets up across CO bringing lighter winds and warmer temperatures to the region. A deepening surface lee trough will bring some breezy afternoon winds down into the lower elevations along the I-25 corridor and eastern slopes of the southeast mountains. Given that the lower level moisture is lacking east of the Continental Divide, precipitation is not expected for tomorrow.
347 PM CST Fri Dec 13 2024 - Fog, freezing fog, drizzle and freezing drizzle are all possible in central Kansas this evening and tonight, along with small chances for thunderstorms. A robust upper level disturbance will approach the high plains this evening. Freezing drizzle is possible along I-70 where temperatures may fall just below freezing before the drizzle ends. Also, some fog and freezing fog are possible in central Kansas later tonight after 05-06z as winds become light northerly.
544 PM CST Fri Dec 13 2024 - Warmer temperatures are expected between tonight and the weekend.
- Wintry precipitation, in the form of sleet, freezing rain, and snow will all be possible within the next 24 hours. While snow and sleet accumulations look to remain less than an inch, do have ice accumulations ranging from a light glaze up to two tenths of an inch, with the highest amounts expected across southwest Minnesota and northwest Iowa.
526 PM CST Fri Dec 13 2024 - Freezing rain and drizzle is anticipated across portions of NE KS and northern MO later this afternoon/evening. Temperatures continue to warm this afternoon and evening which will reduce freezing drizzle/rain potential especially along and south of I-70.
Lows tonight will be much warmer, in the low to mid 40s inland to low 50s along the coast.
Mostly clear conditions exist across the region early this afternoon, as a low pressure system continues to slide eastward of the Rockies. A cold front passed through the Phoenix area earlier this morning, but the lack of moisture with this front didn't even produce any clouds. Regardless, with this frontal passage, cooler temperatures relative to the last few days will be felt this afternoon prior to warming conditions going through this weekend. Warming conditions will commence tomorrow due to building mid- level heights, resulting in high temperatures back into the 70s for the lower deserts.
759 PM MST Fri Dec 13 2024 - Snow showers in the mountains and generally minor travel impacts over the higher passes, gradually ending overnight.
617 PM EST Fri Dec 13 2024 High pressure builds across the region, bringing a brief period of dry but cold conditions into the weekend. As strong low level ridging and subsidence builds east into our region, the clouds should erode, especially midnight to daybreak.
Mostly clear conditions exist across the region early this afternoon, as a low pressure system continues to slide eastward of the Rockies. A cold front passed through the Phoenix area earlier this morning, but the lack of moisture with this front didn't even produce any clouds. Regardless, with this frontal passage, cooler temperatures relative to the last few days will be felt this afternoon prior to warming conditions going through this weekend. Warming conditions will commence tomorrow due to building midlevel heights, resulting in high temperatures back into the 70s for the lower deserts.
Although we may not completely clear out, the lower percentage cloud cover will lead to relatively favorable radiational cooling conditions. Combined with a tight pressure gradient owing to a very anomalous ~1050mb high pressure in the New England territory, mountain wave enhancement is expected to bring advisory level winds starting in the late afternoon to evening hours Saturday.
512 PM MST Fri Dec 13 2024 - Snow showers in the mountains and generally minor travel impacts over the higher passes, gradually ending overnight.
553 PM CST Fri Dec 13 2024 - Freezing rain will bring slippery roads and surfaces to areas near and west of the Illinois River late tonight through Saturday morning.
243 PM MST Fri Dec 13 2024 - Snow showers in the mountains and generally minor travel impacts over the higher passes, gradually ending overnight.
336 PM CST Fri Dec 13 2024 - Freezing rain and drizzle is anticipated across portions of NE KS and northern MO later this afternoon/evening. Temperatures continue to warm this afternoon and evening which will reduce freezing drizzle/rain potential especially along and south of I-70.
525 PM CST Fri Dec 13 2024 - Fog, freezing fog, drizzle and freezing drizzle are all possible in central Kansas this evening and tonight, along with small chances for thunderstorms. A robust upper level disturbance will approach the high plains this evening. Freezing drizzle is possible along I-70 where temperatures may fall just below freezing before the drizzle ends. Also, some fog and freezing fog are possible in central Kansas later tonight after 05-06z as winds become light northerly.
330 PM CST Fri Dec 13 2024 - Freezing rain will bring slippery roads and surfaces to areas near and west of the Illinois River late tonight through Saturday morning.
636 PM EST Fri Dec 13 2024 Broad high pressure will build into the region over the weekend for fair weather and temperatures running below normal.
The nearly stacked low pressure system over the central Plains will continue to help clouds thicken from the west. Wl continue to carry the low pops over a small area in our west. The thickening clouds in the west have held temperatures up a few degrees warmer than expected but morning lows still look on track.
Current Water Vapor and upper air models show mild upper ridge negatively tilted from the mid-west up through the northern plains, with an upper low over the southern Rockies this afternoon. Upper low will slide east into the central plains the rest of today into Saturday morning. The warmer temperatures stay in place for Sunday as well, with most areas seeing 30s and 40s, and some lower 50s possible. Next disturbance affecting our region comes Sunday, as cold front moves through during the day.
- The potential exists for light freezing rain early Sunday morning before changing over to all rain. The most likely areas of occurrence will be in the higher elevation of the Irish Hills and Midland County or Saginaw Valley. The freezing rain may cause some slippery roadways and difficult travel early Sunday.
302 AM EST Sat Dec 14 2024 Broad high pressure will build into the region over the weekend for fair weather and temperatures running below normal.
With the cloud cover, temperatures tonight will stay above freezing.
Cooler temperatures slowly creep in mid to late week, with near normal temperatures by the weekend alongside another chance at mountain showers. Anomalously hot weather will continue through tomorrow as upper-level ridging remains in place overhead. A weak embedded trough will introduce a 5-15% chance of isolated showers across the northern Sacramento Valley and vicinity mountains this evening and then again Monday evening, mainly at higher elevations.