Aikyam-Lab/Synoptic-Bench huggingface dataset:
635 PM EST Mon Dec 5 2022 (Through Tuesday) A rather stout 500 mb mid to upper level ridge is expected to remain in place across the central Gulf of Mexico, which will keep much of the region under its influence. Given this mid and upper level ridge, higher atmospheric heights will generally lead to warmer temperatures. With minimal upper level forcing in place given the upper level ridging and subsidence aloft, rainfall chances will generally remain less than 20% across the aforementioned areas. Generally speaking Tuesday will bring another warm day with highs in the mid 70s and lows will be in the low 60s to upper 50s Tuesday morning.
545 PM CST Mon Dec 5 2022 (This evening through Tuesday night) The FA is currently under zonal flow aloft, under the crest of an upper level ridge that is encompassing much of Mexico into Texas and the Gulf of Mexico. A cold front is to move into the northern combined Panhandles tonight bringing lower Td's and freezing temperatures into the northern half or so of the FA as it stalls out and divides the north from the south. Tomorrow night temperatures will once again fall below freezing for the north where as higher dewpoints in the southern TX Panhandle will keep temperatures in the upper 30s to lower 40s.
Initially foggy conditions with dense fog developments over the I-95 corridor and adjacent nearshore waters is expected to lift by midmorning with lingering chances for light showers over inland southeast Georgia clearing out over the course of the day as high pressure ridging from out of the Gulf of Mexico builds in over the forecast area bringing in drier weather and reduced cloud levels. Overnight low temperatures will drop down into the upper 50s over inland areas and in the lower 60s areas near the shoreline and along the St Johns River.
Latest guidance continues the fog/stratus into much of tomorrow, so high temperatures Tuesday won't be much warmer than tonight's lows in many areas.
919 PM CST Mon Dec 5 2022 (This afternoon through Tuesday night) Today's semi-zonal mid-level flow will back into Tue as a closed low drops swd thru CA. Meanwhile a near stationary cold front will be INVOF Panhandle with modest surface Td of 45-55 from w-e across the CWFA, respectively. Tue night/Wed AM the aforementioned upper low will have moved INVOF nw AZ with the upper jet to the nw of the area. It does make sense that minor shrtwv trof's will be embedded with the mid/upper level flow.
A warm front was located just southwest of the Mid State, but the front was approaching and temperatures were creeping up through the 50s. Upper level winds will come from the west southwest and several disturbances will interact with the moisture and the low level frontal zone. The higher end rainfall totals are showing up along and north of I-40, closer to the warm front that will be positioned just to our north on Wednesday.
A persistent 500mb ridge of high pressure over the Gulf of Mexico will continue to enhance subsidence over our region while keeping the jet-stream and active weather well to the north of our region. A few locales along the immediate east coast (barrier islands) could remain in the lower 70s as the warmer Gulf Stream waters will act to moderate temperatures. After sunrise, a tranquil and pleasant day is expected with high temperatures slightly above normal with highs in the lower 80s area-wide. Wednesday will remain dry and quiet, with high temperatures once again reaching into the low 80s across the region.
Expect coverage to pick up overnight, as a warm front moves across the area. Speaking of warm front, coldest temperatures for the day occurred early this morning, with temps continuing to climb tonight and into tomorrow. Light to moderate rains that moved in earlier this morning continue to stream across the CWA and while the bulk of the high rain rates are south of I-40, even those north of I-40 are getting at least some drizzle. With the mid-state being situated on the north edge of a high pressure ridge centered over the Gulf of Mexico, we're left in the sweet spot for upper level impulses to stream overhead multiple times over the next several days.
930 PM PST Mon Dec 5 2022 A trough moving down the West Coast will bring a chance of showers late Tuesday through early Wednesday and it moves across Southern California.
(The rest of tonight) Cold front currently pushing through E Ok, but will likely struggle with progress across NW AR.
1143 PM CST Mon Dec 5 2022 Zonal mid/upper flow is dominating a majority of the CONUS with a cutoff upper low over the PNW coastline beginning to merge with the dominate upper flow.
Northwesterly flow aloft with weak upper level ridge offshore through Tuesday night. Ridge moves inland Wednesday.
257 AM CST Tue Dec 6 2022 A progressive zonal flow regime remains in place across the CONUS with a mid/upper trough impacting the California coast while a 130 knot upper level jet stretched from the Southwest north and eastward into the Great Lakes area. A warm front is progged to lift north across the Southern Plains remaining south of our area until Wed night.
1232 AM EST Tue Dec 6 2022 (Through Tuesday) A rather stout 500 mb mid to upper level ridge is expected to remain in place across the central Gulf of Mexico, which will keep much of the region under its influence. Given this mid and upper level ridge, higher atmospheric heights will generally lead to warmer temperatures. With minimal upper level forcing in place given the upper level ridging and subsidence aloft, rainfall chances will generally remain less than 20% across the aforementioned areas. Generally speaking Tuesday will bring another warm day with highs in the mid 70s and lows will be in the low 60s to upper 50s Tuesday morning. (Tuesday night through Wednesday night) Ridging builds into the region for this period which will lead to increasing temperatures and dry weather.
It will not rain the entire time, but showers are likely during the week with the heavier rainfall occuring west of the Blue Ridge.
955 PM PST Mon Dec 5 2022 Tonight will be foggy across the region with periods of freezing drizzle over portions of the northeast Washington and into the Idaho Panhandle.
1232 AM EST Tue Dec 6 2022 (Rest of today through Tuesday) Seasonable temperatures and quiet weather conditions remain the status quo as a large and expansive ridge of high pressure will remain established across our region at the surface. At the same time, a persistent 500mb ridge of high pressure over the Gulf of Mexico will enhance subsidence over our region while keeping the jet- stream and active weather well to the north of our region. High temperatures are forecast to reach the lower 80s across the area.
HREF data suggests the higher snowfall rates will probably materialize over ND, but still wouldn't be surprised to see an inch or two across our northern tier counties through early Wed morning. Will start the period with a 1036mb high pressure system over the western lakes region extending southwest into the CWA, with a slight gradient resulting in east/southeast return flow. Once that trough moves through, the pattern shifts to one dominated by a western CONUS trough with southwest flow aloft.
Surface level high pressure has settled over the region today and will remain in place through the rest of the week. Upper level ridging extends across the Gulf.
1049 PM CST Mon Dec 5 2022 (This evening through Tuesday night) The FA is currently under zonal flow aloft, under the crest of an upper level ridge that is encompassing much of Mexico into Texas and the Gulf of Mexico. A cold front is to move into the northern combined Panhandles tonight bringing lower Td's and freezing temperatures into the northern half or so of the FA as it stalls out and divides the north from the south. Tomorrow night temperatures will once again fall below freezing for the north where as higher dewpoints in the southern TX Panhandle will keep temperatures in the upper 30s to lower 40s.
already seeing some reduced visibilities early this morning which may replay after midnight tonight as the low level saturation in conjunction with drier air aloft will be conducive for fog development. Water vapor imagery depicting upper trof along the northern CA coast that is expected to drop S/SE before moving out of the SW US.
Additionally, the low December sun angle and thick cloud cover should inhibit sensible heat flux from aiding diurnal PBL mixing thereby limiting visibility improvements. After the initial surge, rain coverage and intensity likely starts to decrease for the second half of the night when forcing is lost with the low moving overhead and the LLJ progressing east. Visibility reductions will need to be monitored after midnight under the low due to abundant low level saturation and little mixing occurring. Front will have sagged far enough south to allow some surface ridging to work into the area at the beginning of the period.
1231 AM PST Tue Dec 6 2022 Light precipitation is possible, mainly this afternoon and this evening, as a trough of low pressure passes eastward across Central California.
Slightly warmer conditions are in store on Tuesday afternoon.
1043 PM CST Mon Dec 5 2022 (The rest of tonight) Cold front currently pushing through E Ok, but will likely struggle with progress across NW AR.
Min temps in the upper 50s over the cooler interior locations and lower 60s elsewhere. High pressure will continue to dominate as it builds across Florida and into the GOMEX.
TEMPERATURES: Temperatures will range greatly today as a cold front works through. The north will be in the single digits while the south will be in the lower 20s.
The exception will be for areas along and south of the Red River, ahead of a slowly sagging cold front.
529 AM CST Tue Dec 6 2022 (Today through Wednesday afternoon) Upper low along the CA Coast this morning with SW flow extending from the Pacific eastward across the region. This low will swing SE today opening up into a trough as it moves into NV Wednesday morning before reaching UT later in the day. Unusually warm weather for this time of year with expected highs today 10 to 15 degrees above normal with readings in the low to mid 70s. Overnight lows mainly in the 50s with a few 40s for the traditional cooler locations with a few 60s SE.
Benign weather today with weak ridging over the area to keep the warm and humid conditions in place. Surface level high pressure has settled over the region today and will remain in place through the rest of the week. Upper level ridging extends across the Gulf.
In the synoptic scale the main upper low is off the northern California coast and is expected to drop further southeast into southern Nevada by early Wednesday morning. As the upper low over California begins to move out expect light snowfall to redevelop this evening over the north central mountains (mainly zone 34). Temperatures will be cooler across the plains today with readings mainly in the 40s to around 50. Wednesday, an upper level trough slowly pushes eastward into parts of Utah and western Colorado.
Lots of dry air in the low levels as noted on the 00z/06 Dec DVN sounding so what pcpn can make it to the ground is falling out of a mid deck. Today: CAMS indicates another fgen band to develop this morning in our northern cwa but once again this will have to overcome dry air in the low levels. Tonight: High pressure will settle into the area bringing decreasing clouds and light north winds. Lows will range from the lower 20s nw to the lower 30s se.
Temperatures will be slow to respond Today, bottoming out this morning in the low 20s in most areas and gradually warming through the 30s by the noon hour. Most of the models show temperatures reaching the low and mid 40s by around 3 pm maybe owing to the weakly downsloping 850 mb wind field. Much of the previous freezing rain in the forecast was removed as the NBM is a little warmer, and the point sounding from the the 3km NAM and FV3 are too warm for a freezing surface layer.
As the trough swings through Wednesday morning, a brief period of light showers or sprinkles is possible across Clark County before the better dynamics shift east into Northwest Arizona.
Bulk of precip associated with this low is impacting North Dakota with the light snow that was falling in northwestern South Dakota largely ended.
Meanwhile, a cold front will move south early this morning which will keep temperatures either steady or slowly falling across NE Montana today. The next round of snow moves into the SW half of the forecast area this morning and continues into this evening as moisture overruns the cold front to the south with an upper level disturbance. High pressure in Saskatchewan will keep the NE mainly dry today but wind chills will be cold enough at times (-20 to -25F) for a Wind Chill Advisory. The snow will diminish late tonight and cold high pressure moves in.
A passing weather system will bring a chance of showers to areas northeast of Tucson Wednesday along with cooler temperatures areawide.
255 AM PST Tue Dec 6 2022 A trough moving down the West Coast will bring a chance of showers late Tuesday through early Wednesday and it moves across Southern California.
NW flow continues with a low pressure center to our SW, on track to eventually eject out across the Four Corners region.
The trough finally shifts south today with remaining lingering showers ending this morning.
445 AM CST Tue Dec 6 2022 (Today) Cold front continues to inch its way across southeast OK and northwest AR early this morning, though the shallow nature of the cold airmass inhibiting progress as it encounters higher terrain.
Surface analysis depicts high pressure centered over the Canadian Maritimes, with a ridge extending southward along the Eastern Seaboard into north Florida and the eastern Gulf of Mexico. Aloft, a deep ridge is centered over the central and southern Gulf.
635 AM EST Tue Dec 6 2022 Widespread clouds and increasing moisture will spread northeast across the District, ahead of a slow moving frontal boundary approaching from the Midwest and weak area of low pressure forming along it.
(Today through Wednesday afternoon) Upper low along the CA Coast this morning with SW flow extending from the Pacific eastward across the region. This low will swing SE today opening up into a trough as it moves into NV Wednesday morning before reaching UT later in the day. Unusually warm weather for this time of year with expected highs today 10 to 15 degrees above normal with readings in the low to mid 70s. Overnight lows mainly in the 50s with a few 40s for the traditional cooler locations with a few 60s SE.
542 AM CST Tue Dec 6 2022 (Today and tonight) A cold front was slowly making its way southward through the Texas Panhandle early this morning and is expected to move into the extreme southeastern Texas Panhandle by daybreak. Temperatures will likely be much cooler than the surrounding Rolling Plains in the vicinity of Childress due to the cool upslope flow. Meanwhile, an upper level short wave trough continues to dive to the southeast along the California coastline.
Tonight a weak trough moves east across the Great Basin into Wyoming.
(Today) Cold front continues to inch its way across southeast OK and northwest AR early this morning, though the shallow nature of the cold airmass inhibiting progress as it encounters higher terrain.
513 AM CST Tue Dec 6 2022 (Today and tonight) Synoptically speaking, an upper level ridge remains centered across the Gulf of Mexico, with an upper level trough across the West Coast, placing West Central Texas in southwest flow aloft. A weak cold front is forecast to stall somewhere near the northern Big Country. The current highs across the Big Country are in the lower 70s, but if the front pushes a bit farther south than forecast, these may need to be lowered by a few degrees.
A cool wedge remains over northeast Alabama where temperatures are in the lower to middle 50s. The overall set-up for the next two days will be an upper high over the northern Gulf of Mexico with deeper moisture and showers staying along and north of I-20.
An upper level ridge is building over the Gulf of Mexico inducing a southwestern flow aloft across Southeast Texas. Meanwhile at the surface, a weak high over SE CONUS and a low pressure system in the Rockies is bringing a moist southerly flow across Southeast Texas. Afternoon highs today and tomorrow will be in the low 80s for most of the area with localized areas climbing into the mid 80s. 25", the trough may be able to trigger some isolated light showers during the afternoon/evening hours.
(Today through Wednesday Night ) A warm front is slowly lifting north early this Tue morning. some dense fog continued as warmer air moves over the cooler air near the SFC. Expect this warm front to lift further north through this afternoon as the upper flow transitions to a more SW direction over AR.
Tonight a deep trough is diving south along the Continental Divide and bringing an Arctic air mass with it. The upper level trough remains far enough to the east to keep westerly winds over western Montana. Those westerly winds combined with the steep terrain of the Continental Divide will keep the cold air east of the divide, however, the upper level trough will cause some snow along the divide. Wednesday, the flow becomes more anti-cyclonic, but only weakly so, as a weak ridge builds in ahead of the next weather system.
Scattered light showers are possible over the high country today, with greater chances for more widespread precipitation this evening into Wednesday.
503 AM CST Tue Dec 6 2022 (Today through Wednesday Night ) A warm front is slowly lifting north early this Tue morning. some dense fog continued as warmer air moves over the cooler air near the SFC. Expect this warm front to lift further north through this afternoon as the upper flow transitions to a more SW direction over AR.
After the initial surge, rain coverage and intensity likely starts to decrease for the second half of the night when forcing is lost with the low moving overhead and the LLJ progressing east. Visibility reductions will need to be monitored after midnight under the low due to abundant low level saturation and little mixing occurring. Front will have sagged far enough south to allow some surface ridging to work into the area at the beginning of the period.
542 AM CST Tue Dec 6 2022 A progressive zonal flow regime remains in place across the CONUS with a mid/upper trough impacting the California coast while a 130 knot upper level jet stretched from the Southwest north and eastward into the Great Lakes area. A warm front is progged to lift north across the Southern Plains remaining south of our area until Wed night.
Clouds with scattered showers through Wednesday with weak ridging offshore slowly moving inland.
(Today and tonight) A cold front was slowly making its way southward through the Texas Panhandle early this morning and is expected to move into the extreme southeastern Texas Panhandle by daybreak. Temperatures will likely be much cooler than the surrounding Rolling Plains in the vicinity of Childress due to the cool upslope flow. Meanwhile, an upper level short wave trough continues to dive to the southeast along the California coastline.
(Today and tonight) Synoptically speaking, an upper level ridge remains centered across the Gulf of Mexico, with an upper level trough across the West Coast, placing West Central Texas in southwest flow aloft. A weak cold front is forecast to stall somewhere near the northern Big Country. The current highs across the Big Country are in the lower 70s, but if the front pushes a bit farther south than forecast, these may need to be lowered by a few degrees.
A persistent 500mb ridge of high pressure over the Gulf of Mexico will continue to enhance subsidence over our region while keeping the jet stream and active weather well to the north of our region. A few locales along the immediate east coast could remain in the lower 70s as the warmer Gulf Stream waters will act to moderate temperatures. After sunrise, a tranquil and pleasant day is expected with high temperatures slightly above normal with highs in the lower 80s area wide. Wednesday will remain dry and quiet, with high temperatures once again reaching into the low 80s across the region.
1037 AM CST Tue Dec 6 2022 The warm front is located just north of the I-40 corridor as of 10 AM with visibility reduced to 1/2 mile or less across portions of northeast AR and the MO Bootheel.
259 PM CST Tue Dec 6 2022 Tonight through Wednesday: a strong subtropical ridge will persist over the Gulf of Mexico region through the near term. Temperatures today have reached the lower 80s at many locations and expect a few mid 80 readings to be possible tomorrow afternoon assuming we get similar cloud cover. Otherwise, continued frontal moisture convergence and shower chances will remain mostly limited to along/north of the Highway 82 corridor. This high will begin to shift southeast as an upper trough develops to the west and moves north of the area later in the week.
High pressure continues to build in across the area helping to relax winds just above the surface and allow for more efficient radiational cooling and decoupling of the boundary layer for much of the area. Overnight lows tonight will generally be in the lower to middle 60's, warmest nearer the coast. High pressure continues to build into the area and temperatures will be able to amply warm as dry weather prevails.
1003 AM EST Tue Dec 6 2022 Widespread clouds and increasing moisture will spread northeast across the District, ahead of a slow moving frontal boundary approaching from the Midwest and weak area of low pressure forming along it.
(The rest of today) Shallow cold front continues to make a slow slog to the southeast this morning across eastern Oklahoma and northwest Arkansas. Front will likely be held up within the higher terrain areas of southeast Oklahoma and northwest Arkansas.
257 PM EST Tue Dec 6 2022 Occasional showers can be expected at times through the work week as a series of low pressure systems move through the region. A wave of low pressure will ride northeast along it tonight and ahead of the low, a 30 to 40 knot 850 mb jet will shift east across the upper Ohio Valley. Lingering areas of fog in the morning should also dissipate, but clouds will hang around through the day and likely into Wednesday night as a fair amount of moisture will remain in the lower levels.
134 PM EST Tue Dec 6 2022 Widespread clouds and increasing moisture will spread northeast across the District, ahead of a slow moving frontal boundary approaching from the Midwest and weak area of low pressure forming along it.
The highest coverage, and thus the best chances to see rain, will be across areas along I- 20. Not only will the best chances of seeing rain be across I-20, but the highest rainfall totals will also be across those same areas. Otherwise, a weak cold front will stall across the Big Country. In addition, we will see slightly cooler temperatures across the Big Country north of where the front stalls at. Highs will be 5 to 10 degrees cooler for tomorrow than it was today.
Dry And Comfortable Weather Continues Over South Florida (Rest of today through Wednesday) A large mid level ridge centered over the Gulf of Mexico will continue to dominate the weather pattern across South Florida for the rest of this afternoon into Wednesday. With many areas having a mainly clear sky tonight combined with light winds, this will allow for low temperatures to drop into the lower 60s across the Lake Okeechobee region. Low temperatures will be warmer near the east coast metro areas where they will drop to around 70. With plenty of sunshine for Wednesday combined with the east to northeasterly wind flow, high temperatures will range from the lower 80s across the east coast to the mid 80s across interior Southwest Florida.