Aikyam-Lab/Synoptic-Bench huggingface dataset:
247 PM EST Fri Dec 29 2023 ============================================================== Key Messages: - Patchy light snow or drizzle to continue into Sat morning - Winter weather impacts limited by above-freezing air and ground temps ============================================================== Slow-moving upper low over the Ohio Valley is generating extensive low stratus and patchy light snow or drizzle. Expect largely status quo through most of tonight as the low slowly pinwheels eastward across Kentucky, but low-level and mid-level flow remains cyclonically curved. With air and ground temperatures remaining near or slightly above freezing, we're not expecting any winter weather impacts. Precip should shut off Sat morning as the upper low departs, but will hold on to plenty of cloud cover through the day with lingering trofiness across the area. Not much recovery in temps, as we'll struggle into the lower 40s in most locations.
1206 PM CST Fri Dec 29 2023 -Temperatures in the upper 30s to lower 40s to start the weekend, before a dry cold front passes Saturday night.
Continued low-level troughing and lift over southern MI and IN/OH, underneath the resident upper-level low, will maintain low clouds and occasional drizzle or light rain showers through this evening.
(This afternoon through Saturday night) A gradual warming trend is underway today as the large slow- moving low continues inching its way into the Appalachians while high-amplitude ridging extending from Baja north-northeastward across the Great Basin to the northern Rockies moves slowly eastward. The warming trend continues Saturday as highs climb above normal, aided by southwesterly downslope flow coincident with the eastward progression of the aforementioned ridge.
1128 AM CST Fri Dec 29 2023 - Temperatures to remain cooler than recent record setting values, but remain generally 5 to 10 degrees above normal.
1225 PM MST Fri Dec 29 2023 Northwest flow aloft today and Saturday downstream of a ridge axis over the Rockies.
108 PM EST Fri Dec 29 2023 A broad upper level low pressure system will slowly move through the region through tonight, bringing repeated, periodic rounds of patchy light precipitation.
Temperatures for the remainder of the daylight hours will be several degrees warmer over eastern Kansas and Western Missouri, with a few highs sneaking into the middle 40s. Even with an increase in mid-level cloud cover, highs on Saturday will be warmer with temps topping the lower 40s in NE MO to the upper 40s over east central Kansas.
pdf Dry weather conditions will persist through today and tonight as high pressure continues to dominate the weather pattern over the region, with westerly winds becoming more mild by this evening. Mild winds overnight will inhibit fog developments, however frost formation is likely to occur overnight and into the early morning hours on Saturday with the highest likelihood for developments occurring over inland areas along and north of the I-10 corridor.
On Saturday, surface ridging starts to build over the region, creating a pleasant start to the New Year's weekend. Westerly/southwesterly flow will bring clear skies and high temperatures in the lower to middle 50s.
As the low pressure system that has been impacting the area continues to push east, all precip will end this evening. Lows tonight will be in the low to mid 20s. This will bring dry and warmer temperatures to the area as highs warm into the middle 40s to the lower 50s Saturday afternoon.
1126 AM CST Fri Dec 29 2023 (Today through Saturday afternoon) Temperatures across the region have fallen to the 20s and low 30s this morning, so make sure to grab a heavy coat as you head out the door! There will only be a slight warm up this afternoon as the large upper level low only barely pushes eastward today, and upper ridging begins to take its hold over New Mexico and Texas. Temperatures take a tumble again tonight with efficient radiational cooling given light winds and clear skies, so another morning of below-freezing temperatures is expected area-wide. The upper low will finally sweep up into the Northeast on Saturday and the axis of the upper ridge sets up over the Plains, pushing temperatures above normal for the first time since Christmas Eve.
1116 AM CST Fri Dec 29 2023 (Today and tonight) The upper low currently over the Ohio River Valley will be kicked eastward into the Appalachians late this afternoon as upper level ridging moves into the Midwest/Great Lakes. This will help to warm highs into the mid/upper 50s, a few degrees warmer than yesterday.
- Light precipitation could start to move back in Saturday night Low level moisture will deepen up as we go through Saturday night as a wave of low pressure approaches from the northwest. The main question is, will it fall below freezing by daybreak which would support freezing drizzle. Thus, if we do see any freezing drizzle, at this point it looks spotty.
The upper level trough is on its way and ridging is on its way in.
254 PM CST Fri Dec 29 2023 - A cold front will sweep through the region north to south Saturday night.
Upper- level ridging allows for warm and dry conditions to persist through the end of 2023. Upper level ridging continues to leave us with quiet and non- impactful weather. Due to an upper-level ridge across the area there will be mid- to high-level clouds (except at the KEKS and KBZN terminals) with light winds for this TAF period.
Lacy (Through Tonight) Another cool day is on tap for today across eastern Oklahoma and western Arkansas as upper low slowly drops south across the eastern half of the country. CLouds will keep temperatures mostly below normal again today with highs ranging from near 50 across southeast Oklahoma to the low 40s or even upper 30s across northwest Arkansas where clouds hang tight through the daytime hours.
A leftover trof of low pressure is easing south across southern lower MI, while weak ridging extends from far northern Ontario to southern MN. An incoming clipper (heading toward the MN arrowhead) will pinch off the weak upstream ridging, and aid in redeveloping surface troffing over the northern later tonight.
111 PM EST Fri Dec 29 2023 Dry, cooler and gusty winds are expected through the rest of the afternoon following the passage of a cold front.
Upper heights will rise as a ridge to the west will finally displace a slow moving upper low over the eastern US. This will lead to warmer temperatures this afternoon, with highs in the mid-to-upper 50s expected. Saturday will be the warmest day for the foreseeable future with the aforementioned ridge axis moving through. Cloud cover will increase through Saturday evening as a cold front approaches.
1201 PM MST Fri Dec 29 2023 High pressure will keep above normal temperatures across the region into Saturday along with dry conditions.
Upper- level ridging allows for warm and dry conditions to persist through the end of 2023. Upper level ridging continues to leave us with quiet and non- impactful weather.
144 PM EST Fri Dec 29 2023 Through Saturday night, we will remain under the influence of a low pressure system moving towards the Mid Atlantic.
The low is forecast to eject towards New England tonight, but not before sending a spoke of vorticity across Central Alabama this evening. There will be enough wrap around moisture to support some light precipition across the northern third of the area, beginning mainly as isolated light rain late this afternoon then transitioning to a rain/snow mix this evening as temperatures fall from the lower 40s into the mid 30s. If you're north of I-22/I-20, there's a decent chance you'll see some snow flakes falling tonight, but intensity will be very light, coverage isolated, and above freezing surface temperatures will prevent accumulation in most instances. The trough quickly rotates east of the area by sunrise tomorrow morning as a drier airmass returns to the region.
131 PM EST Fri Dec 29 2023 Through Saturday night, we will remain under the influence of a low pressure system moving towards the Mid Atlantic.
1123 AM CST Fri Dec 29 2023 (Today and tonight) Less cloud cover expected today with transient mid-high level cloud cover possible in northwest/northerly flow on backside of departing upper low.
1001 AM MST Fri Dec 29 2023 Key Messages: - High Pressure will keep quiet weather over Western and Central WY through the weekend.
Highs today will range from the low 50s east to to upper 50s west. Highs Saturday will be about 10 degrees warmer. This warm-up is attributed to the transient upper ridge moving from west to east, allowing for surface winds to become southerly throughout the region.
258 PM EST Fri Dec 29 2023 As a trough of low pressure moves east and away from the region tonight, cold air behind it will keep a patchy light precipitation over the region through daybreak. A brief upper ridge will build over the area Saturday and shunt any lingering precipitation to the southeast. A thermal trough noted at 850mb will be the feature that could briefly change any precip to all snow before ending in the northwest by daybreak. Lows tonight will uniformly be in the lower 30s with westerly winds closer to 10 mph region-wide. Warming behind the thermal trough should not permit any mixing to spark any additional flurries or sprinkles. Highs will top out in the lower 40s in a light wsw sfc flow.
239 PM EST Fri Dec 29 2023 Generally NW flow in place across the area with the cold front to the south of the state and high pressure building into the north. Another boundary will move through the area tonight, with the upper trough lifting out to the NE through Saturday, clearing out the area.
Wind chill temperatures are generally at or below freezing. Aloft, the upper low remains centered over the Ohio River Valley with a perturbation rotating through the Mid-South right now.
Conditions across the remainder of the Northern Rockies are rather quiet today, as a ridge of high pressure continues to be the main feature. A trough of low pressure sitting off the west coast of the US is still expected to split this weekend, with waves going north and south of the region.
/JLH (Now through Saturday) A potent upper level low pressure system over the Upper Tennessee Valley will continue to gradually move northeastward through tonight. Cold temperatures are expected tonight, with nearly all locations north of the I-10 corridor dropping down below freezing, ranging from the upper 20s to the lower 30s.
-Enriquez PREVIOUS DISCUSSION: Ridge of High Pressure will keep things relatively quiet through the weekend.
1049 AM MST Fri Dec 29 2023 Northwest flow aloft today and Saturday downstream of a ridge axis over the Rockies.
1226 PM MST Fri Dec 29 2023 Quiet conditions will prevail over the short term with upper level ridging in place over the region. A clipper system will move to our northeast lowering temperatures into the high 30s for locations in the east such as Miles City and Baker for Saturday. Torgerson Split flow over the western US will keep the area mainly dry, with high pressure over the region, and Pacific waves crossing the southern US.
1135 AM EST Fri Dec 29 2023 A broad upper level low pressure system will slowly move through the region through tonight, bringing repeated, periodic rounds of patchy light precipitation.
129 PM CST Fri Dec 29 2023 -Highs in the mid 30s to lower 40s Saturday, followed by a before a dry cold front passage Saturday night.
(Tonight through Saturday night) An upper level low pressure center has continued to move east into the southeastern U. The main focus in the short term will again be the potential for freezing temperatures over the low lying areas of the Hill Country.
Nearshore SSTs are in the upper 60s, which will limit high temperatures to the lower 70s at best.
Water vapor imagery highlights a broad, positively tilted, long wave trough complex over the Central US, with the base extending southwest through Mexico.
(Saturday through Friday) Saturday will be nicest day of the weekend across much of the area with weak high pressure in control for the day.
High pressure will then move over the Southeast this weekend. The upper trough centered over the Ohio Valley will move ENE through tonight. Meanwhile, an embedded s/w disturbance in the SW flow ahead of the trough axis will help to push a sfc cold front east across central NC through this evening.
A mix of sun and clouds is found across North Central and Southwestern Montana as upper level ridging sits over the Northern Rockies. With this ridge in place, There will not be a whole lot to discuss weather wise today and the next few days, as each of the next few days will see mild temperatures, generally light winds, patchy valley fog, and just a few mountain flurries.
Dry weather and sunny skies have prevailed across the Western Slope this afternoon with temperatures trending a few degrees warmer than this time yesterday. Tonight the axis of the ridge, currently centered near western Utah, will shift east before settling directly overhead by daybreak Saturday. A transition to southwest flow will follow suit across the region, as a strengthening Pacific trough upstream begins to slowly nudge inland across the West Coast. High based moisture embedded in the southwest flow will infiltrate the ridge, seeing a band of cirrus clouds intrude from west to east overnight. CAM guidance insists that isolated showers will develop over the higher terrain Saturday afternoon and overnight.
Early evening IR satellite imagery is showing stratus developing over the eastern Gulf of Mexico and shifting into the Nature Coast and Tampa Bay area under west and northwest winds in the wake of the recent cold front.
Deep Pacific trof progresses east tonight, with the trof axis situated along the coast and a surface cold front positioned over California around sunrise Saturday. Showers move into the forecast region from the west early Saturday morning in accordance with the progression of the trof and cold front. Showers will be focused across the western half of the forecast region with isolated showers, or no showers at all, across the eastern half of the forecast region thanks to the trof weakening as it progresses inland.
upper level ridging is forecast to progress east out of Utah across Colorado through tomorrow. Mozley Key Messages: - Highly amplified pattern through the period, though confidence remains low on any precip chances, outside of some light snow across the higher terrain.
534 PM CST Fri Dec 29 2023 (Tonight through Saturday night) An upper level low pressure center has continued to move east into the southeastern U. The main focus in the short term will again be the potential for freezing temperatures over the low lying areas of the Hill Country.
A few areas in interior SE GA could get close to the freezing mark, but not anticipating a substantial area of freezing temps. pdf Dry weather conditions will persist through today and tonight as high pressure continues to dominate the weather pattern over the region, with westerly winds becoming more mild by this evening. Mild winds overnight will inhibit fog developments, however frost formation is likely to occur overnight and into the early morning hours on Saturday with the highest likelihood for developments occurring over inland areas along and north of the I-10 corridor.
Highs today will range from the low 50s east to to upper 50s west. Highs Saturday will be about 10 degrees warmer. /NEW/ /Saturday Night through Friday/ Saturday night has an upper ridging pattern entering our region which will lead to upper level subsidence and continue the warming pattern for this weekend.
600 PM CST Fri Dec 29 2023 (Tonight through Saturday night) Key Messages: - 20-40% chance for freezing temperatures tonight With clear skies tonight and tomorrow, chilly temperatures are expected tonight with plenty of sunshine tomorrow. An SPS for temperatures below freezing was issued for McMullen, Jim Wells and Bee counties for tonight as the NBM is showing a 20-40% chance of overnight lows dropping below 32 degrees. With southerly flow returning tomorrow, daytime highs and overnight lows tomorrow will be a touch warmer than today and tonight with daytime highs tomorrow in the upper 60s to lower 70 and overnight lows tomorrow night in the lower 40s to lower 50s.
458 PM CST Fri Dec 29 2023 - A cold front will sweep through the region north to south Saturday night.
As lee troughing ensues, a southerly component to the surface wind will enter western portions of North Texas before daybreak. /Issued 411 PM CST Fri Dec 29 2023/ /Saturday Night through Friday/ Saturday night has an upper ridging pattern entering our region which will lead to upper level subsidence and continue the warming pattern for this weekend.
Gusts up to 60 mph are likely in the highest peaks. * Wind Advisory in effect for widespread strong southerly winds today with gusts generally to 20-30 mph, up to 50-60 mph along the coast and at ridgetops until 7 PM Friday.
A series of storm systems will move through the region in the week ahead bringing cooler conditions and periods of unsettled weather.
624 PM EST Fri Dec 29 2023 As a trough of low pressure moves east and away from the region tonight, cold air behind it will keep a patchy light precipitation over the region through daybreak. A brief upper ridge will build over the area Saturday and shunt any lingering precipitation to the southeast. A thermal trough noted at 850mb will be the feature that could briefly change any precip to all snow before ending in the northwest by daybreak. Lows tonight will uniformly be in the lower 30s with westerly winds closer to 10 mph region-wide. Warming behind the thermal trough should not permit any mixing to spark any additional flurries or sprinkles. Highs will top out in the lower 40s in a light wsw sfc flow.
539 PM CST Fri Dec 29 2023 (This afternoon through Saturday night) A gradual warming trend is underway today as the large slow- moving low continues inching its way into the Appalachians while high-amplitude ridging extending from Baja north-northeastward across the Great Basin to the northern Rockies moves slowly eastward. The warming trend continues Saturday as highs climb above normal, aided by southwesterly downslope flow coincident with the eastward progression of the aforementioned ridge.
This may briefly transition to sprinkles in the Des Moines area in the afternoon when temperatures rise above freezing.
Beginning tomorrow due to a low pressure system impacting the area, a sharp cooldown to near normal temperatures will occur. The low pressure system dropping temperatures back down to normal will also bring rain and snow to the forecast area. Gusty winds associated with the low pressure system moving in will impact the area as well.
============================================================== Key Messages: - Patchy light snow or drizzle to continue into Sat morning - Winter weather impacts limited by above-freezing air and ground temps ============================================================== Slow-moving upper low over the Ohio Valley is generating extensive low stratus and patchy light snow or drizzle. Expect largely status quo through most of tonight as the low slowly pinwheels eastward across Kentucky, but low-level and mid-level flow remains cyclonically curved. With air and ground temperatures remaining near or slightly above freezing, we're not expecting any winter weather impacts. Precip should shut off Sat morning as the upper low departs, but will hold on to plenty of cloud cover through the day with lingering trofiness across the area. Not much recovery in temps, as we'll struggle into the lower 40s in most locations.
- A cold front will drop south through the area tonight.
Precip will spread west-to-east through the next several hours as temperatures fall into the low to mid 30s overnight. Highs will only climb to the 40s and 50 - cooler spots will be northeast where lingering cloud cover will remain through the afternoon.
(Tonight through Saturday night) Key Messages: - 20-40% chance for freezing temperatures tonight With clear skies tonight and tomorrow, chilly temperatures are expected tonight with plenty of sunshine tomorrow. An SPS for temperatures below freezing was issued for McMullen, Jim Wells and Bee counties for tonight as the NBM is showing a 20-40% chance of overnight lows dropping below 32 degrees. With southerly flow returning tomorrow, daytime highs and overnight lows tomorrow will be a touch warmer than today and tonight with daytime highs tomorrow in the upper 60s to lower 70 and overnight lows tomorrow night in the lower 40s to lower 50s.
535 PM CST Fri Dec 29 2023 -Highs in the mid 30s to lower 40s Saturday, followed by a before a dry cold front passage Saturday night.
The low is forecast to eject towards New England tonight, but not before sending a spoke of vorticity across Central Alabama this evening. There will be enough wrap around moisture to support some light precipitation across the northern third of the area, beginning mainly as isolated light rain late this afternoon then transitioning to a rain/snow mix this evening as temperatures fall from the lower 40s into the mid 30s. If you're north of I-22/I-20, there's a decent chance you'll see some snow flakes falling tonight, but intensity will be very light, coverage isolated, and above freezing surface temperatures will prevent accumulation in most instances. The trough quickly rotates east of the area by sunrise tomorrow morning as a drier airmass returns to the region.
upper level ridging is forecast to progress east out of Utah across Colorado through tomorrow. Mozley Key Messages: - Highly amplified pattern through the period, though confidence remains low on any precip chances, outside of some light snow across the higher terrain. Will see the upper ridge in place break down at the start of the period along with some cooling moving into the Sunday time frame, as the next upper trough moves in from the west. This will bring some focus and precip chances to the higher terrain mainly Sunday into Sunday night, however, moisture looks to be rather limited and will help to keep any amounts on the lighter side.
No chance of precip tonight, but a modest Canadian high pressure oozing from southern SK into northeast MT will produce a backdoor wind shift to light easterly winds for us tomorrow. JKL Quiet conditions will prevail over the short term with upper level ridging in place over the region. A clipper system will move to our northeast lowering temperatures into the high 30s for locations in the east such as Miles City and Baker for Saturday. Torgerson Split flow over the western US will keep the area mainly dry, with high pressure over the region, and Pacific waves crossing the southern US.
Upper level ridge over the Intermountain west will continue low mixing heights through at least Sunday. Pcpn continues to stay west of our CWA, but there is a 30-50 percent chance it will edge eastward into Harney County Saturday, and a 20-30 percent chance it will get to the OR/ID border and the higher western Idaho mountains Saturday night, before decreasing again Sunday.
1236 AM MST Sat Dec 30 2023 Benign weather will be in place through the weekend as high pressure dominates over the region leading to dry conditions. Temperatures will be a few degrees cooler over eastern areas.
Due to an upper-level ridge across the area there will be mid- to high-level clouds with light winds for this TAF period. /ISSUED 423 PM MST Fri Dec 29 2023/ A mix of sun and clouds is found across North Central and Southwestern Montana as upper level ridging sits over the Northern Rockies. With this ridge in place, There will not be a whole lot to discuss weather wise today and the next few days, as each of the next few days will see mild temperatures, generally light winds, patchy valley fog, and just a few mountain flurries.