Aikyam-Lab/Synoptic-Bench huggingface dataset:
321 AM CST Sat Nov 27 2021 Today will start off with a chilly morning as low temperatures dropped to near or below freezing for a lot of areas across the ArkLaMiss. As we begin to gain sunlight, temperatures will start to recover and eventually warm into the low 60s for highs today. Clouds will also start to increase through the night which will help limit radiational cooling and keep us above freezing. Expect lows tonight to range from the low to mid 40s. /JNE/ Areas of light rain will continue into early Sunday morning mainly across the southern half of the area, but rain/clouds should clear out fairly quickly during the late morning/midday time frame with the passage of a mid/upper trough.
Sfc observations this morning depict the cold front stretching from northwest Kansas through southeast Nebraska. And given the cooler airmass is far displaced behind the sfc front, confidence was high enough to bump high temps closer to the 95th percentile of guidance with readings in the middle 60s. Highs in the lower 50s coupled with light winds and sunny skies, should result in another pleasant afternoon.
Cooler temperatures will prevail with highs in the 40s in most areas and mid to upper 30s north. Wind speed continue to look high enough over Phillips and Petroleum Counties with 850 mb winds around 55 knots to keep the High Wind Watch in effect for Sunday.
305 AM MST Sat Nov 27 2021 GOES-16 water vapor imagery reveals a mid-level low over northern Mexico, fast west-northwest flow over the Pacific Northwest, and a broad ridge off the Southern California coastline as of early this morning. As this occurs, the Southern California ridge will also expand and lead to rising heights across the Great Basin and Four Corners. Modest mid and high level moisture riding over the crest of this building ridge will lead to more bouts of cirrus and cirrostratus, especially over the northern half of the forecast area.
940 AM EST Sat Nov 27 2021 High pressure building in from the west lasts through the weekend. A dry cold front will push through the area Sunday night. However, NNW flow through most of the day and cold 850 mb temps right around 0 C, will limit highs to only the upper 40s across the northeast half of the area, and the low 50s across the southwest. Light winds at the SFC back to become SWerly this evening/tonight bringing in slightly warmer/moister air. Lows in the low 30s approaching freezing for far inland areas and sheltered spots, upper 30s for coast, around 40 for OBX.
508 AM CST Sat Nov 27 2021 This forecast period continues to look mainly dry with just a few dry cold frontal passages and no hazards expected. Today, a cold front will look to move through the area however, with little cold air behind the front, this feature will do little more than provide mixing to allow highs to rise into the upper 50s to lower 60s. The cool start and weak mixing through the day Sunday as high pressure remains in control will hold highs in the mid 40s to lower 50s.
540 AM CST Sat Nov 27 2021 (Today) Upper low, currently located west of ELP, will shift east into north Texas today.
The overall 500mb pattern will feature an exiting wave over the Dakotas and MN, with ridging taking control of our area by mid afternoon and continuing through Saturday. In between the trough and nearing high, gusty north to northwesterly winds will rule the day. The main area of low pressure will sink to the central Plains, with a ridge moving to central SD by 06Z Sunday, and our eastern counties 12-15Z Sunday. Expect high clouds to stream in from the northwest late tonight behind the ridge, which may impact how low temperatures will fall.
In turn due to the warmer temperatures, relative humidity values have dropped closer to 20 to 25 percent across much of the area. With the passage of an upper level wave, a surface cold front is expected to push through the area around dawn this morning and bring temperatures down slightly for today (though still above average) and bring breezy northwest winds as well. Ridging will begin to build over the Pacific NW along with an upper level jet streak over British Columbia. This jet streak however will dampen any ridging before it can reach us, ensuring we stay in northwest flow and sending a couple waves our way.
For Sunday morning, a dry cold front will move across the region but cold air advection is limited. This front is associated with an upper trough moving across the Great Lakes into northeast United States.
However, as the column further saturates with time and the primary trof to our west makes further ewd progress, large scale lift should generate additional precip development later this afternoon and overnight.
(The rest of today ) Forecast is on track with increasing cloud cover primarily south of Interstate 40 ahead of upper low moving through western / central TX. Update will make minor adjustments to sky cover and slightly warmer high temps across NE OK.
/19/ High pressure at the surface will continue to slide east across the region today. Clouds will also be on the increase from west to east today, as a mid/upper level low pressure system tracks east out of West Texas and weakens as it moves through the Lower Mississippi River Valley overnight.
A weak cold front was approaching from the northwest this afternoon, and will sweep across the entire region over the next few hours. This will create a wind shift to the north for tonight's period, and bring a brief shot of cooler air with it. Overnight lows tonight should still remain above freezing for almost all locations. For Sunday, a slightly cooler day is on tap with high temperatures limited to the low to mid 50s.
Mid-level flow will increase from the northwest over Oklahoma later today, and along with a passing cold front, will keep a distinct northern edge to light rain. The cold front now moving through northwestern Oklahoma is expected to clear central Oklahoma by late afternoon and southeastern Oklahoma around midnight. Only slightly cooler air is expected to take temperatures down closer to late-November averages on Sunday with breezy north winds subsiding around mid-day Sunday.
Downslope winds will help temps remain above normal with a range from the low 60s in the west to the low 50s in the eastern part of the forecast area.
flat ridging aloft with short waves riding over the top of the ridge. It will move onshore as a cold front but will quickly lift north as a warm front.
A cold front will approach from the North Tonight, as an upper wave moves east toward the region. In general lows will be in the 37 to 40 degree range, except about 5 degrees or so warmer at the coast. The cold front will move to just north of the forecast area Sunday afternoon, as the upper energy moves in from the west. The cold front will move to the south overnight Sunday night. Highs Sunday will once again be below normal with readings only getting into the lower 60s. Lows will range from the upper 30s to lower 40s SE GA, to the lower to mid 40s NE FL.
1142 AM CST Sat Nov 27 2021 This forecast period continues to look mainly dry with just a few dry cold frontal passages and no hazards expected. Today, a cold front will look to move through the area however, with little cold air behind the front, this feature will do little more than provide mixing to allow highs to rise into the upper 50s to lower 60s. The cool start and weak mixing through the day Sunday as high pressure remains in control will hold highs in the mid 40s to lower 50s.
Northwest flow continues to amplify over the region Sunday while a sfc warm front lifts northeastward across the Northern Plains. Given that the frontal boundary will likely not approach our area until late afternoon, am not expecting highs to be much different from today, especially considering that cloud cover will be on the upward trend as moisture increases in the low to mid levels. Thus, will continue with afternoon highs in the low to mid 50s west of the James River, with locations east largely remaining the 40s.
258 PM EST Sat Nov 27 2021 If we had not mentioned a decaying cold front passage this morning, no one in the Keys would know there was any weather occurring!! It has been an absolutely beautiful fall day across the region. This phasing will allow for a weak surface reflection to develop with a cold front developing along the north Gulf coast late Sunday morning or early afternoon.
149 PM EST Sat Nov 27 2021 High pressure will move off the Southeast coast tonight. A fast- moving but dry cold front will cross the area late Sunday.
Tomorrow morning a bit more of a concern as temps may be below freezing in some areas especially north of the Missouri River valley and in parts of the Yellowstone valley. Cooler temperatures will prevail with highs in the 40s in most areas and mid to upper 30s north. Wind speed continue to look high enough over Phillips and Petroleum Counties with 850 mb winds around 55 knots to keep the High Wind Watch in effect for Sunday.
119 PM EST Sat Nov 27 2021 A fast moving clipper system will push southeast across the Great Lakes and mid Ohio Valley tonight, ushering in cooler temperatures for Sunday. High pressure will return to the area for Sunday night. As this occurs, a trailing surface cold front will move east through the region. There will be a chance of light rain/snow across parts of the east this evening until the cold front passes by. CAA in the wake of the cold front will then spread clouds back toward the south overnight. Lows will fall into the upper 20s to the lower 30s. Highs will range from the upper 30s north to the lower 40s south.
/issued 700 AM EST Sat Nov 27 2021/ High pressure centered in the central Gulf coastal states eases eastward today. Yesterday's cold front is now in south FL as high pressure in the north builds across the waters. Another cold front with a few showers tracks south late Sun-early Mon with high pressure in it's wake.
Wind shift in the wake of the trof unlikely to do much in the way of CAA, and sunshine should allow for a decent warm up into the low to mid 60s at most locations.
This afternoon, skies were mostly sunny and temps were around 10 degrees warmer than yesterday, thanks to a somewhat gusty southwest wind. Mainly high clouds will increase tonight ahead of a rain-free cold front that will move through the area Sunday morning. Lows will be mostly in the low to mid 30s. Highs on Sunday will be a few degrees cooler than today as winds come from the northwest. The work week will start cooler than normal, then a warming trend will kick in as an upper ridge expands eastward from the southern Plains.
Early this afternoon, the cold front had moved into northern Missouri and will sweep through the forecast area tonight.
High pressure at the surface will continue to slide east across the region today. Clouds will also be on the increase from west to east today, as a mid/upper level low pressure system tracks east out of West Texas and weakens as it moves through the Lower Mississippi River Valley overnight.
917 AM CST Sat Nov 27 2021 High pressure remains in entrenched over much of the southeastern CONUS this morning. This ridge will keep a clipper system and its associated front well north of the area today. This should bring some warmer temperatures (10 to 15 degrees above yesterday's highs) back into the region with abundant sunshine expected as afternoon temperatures climb into the mid to upper 50s. While we won't be seeing any precipitation from this system, we will see northerly winds move back in Sunday afternoon as a dry front moves through out ahead of strong high pressure moving in from the northern Great Plains.
As a result a cold front will move through the Quad State tonight. However, it will have an impact on temperatures as northwest winds bring cooler air into the region for Sunday.
(Through Tonight) The cold front will move into portions of northeast Oklahoma in the next hour and push southward through the evening and into early tomorrow morning. Rain associated with the upper low moving eastward across Texas should remain just south of the Red River, but it will be close. Expect cloudiness to decrease from northwest to southeast as the low moves to the Texas/Louisiana border by daybreak Sunday.
The passage of a cold front brought gusty northerly winds to the region today. Mild temperatures will return for Sunday, although they will be a few degrees cooler than today. A ridge of high pressure at the surface will maintain dry conditions for the rest of the weekend.
The flow aloft will remain northwesterly and drier on Sunday as a ridge of high pressure builds in from the west. At the surface a developing lee trough will also help enhance the downslope the warming in and near the foothills. On Tue, a weak upper level trough will move across, however, cross-sections show little moisture with this feature. Winds will also increase during this period over the higher terrain. A lee trough is expected to develop on Sunday, so winds will be dependent on where this boundary sets up.
Early this afternoon, the upper low responsible for todays gloom was centered over far west Texas with visible satellite showing some sunshine now over most of Val Verde County as the mid-level dry slot begins to push in from the west.
1231 PM PST Sat Nov 27 2021 Strong high pressure remains over the region with the storm track continuing to be diverted well to our north. An appreciable ridge of high pressure remains anchored over much of the western US with the storm track continuing to be directed into the Pacific Northwest.
After a cool start this morning, temperatures warm into the low-50s to low-60s across the high terrain and mid-60s to mid-70s across the lower elevations. Sunny skies and light north/northeast winds are expected with high pressure remaining in control over the Desert Southwest. A pretty typical La NiÃ±a pattern is in place with a strong ridge of high pressure over the eastern Pacific set to build over California and the desert Southwest over the next several days. The ridge will keep any weather systems well north of Arizona with a long stretch of dry and warm weather ahead.
1115 AM CST Sat Nov 27 2021 (The rest of today ) Forecast is on track with increasing cloud cover primarily south of Interstate 40 ahead of upper low moving through western / central TX. Update will make minor adjustments to sky cover and slightly warmer high temps across NE OK.
The overall track of this low pressure is favorable for increasing surface gradient across WY, especially the usual Wind Corridor. The southwesterly flow will bring temperatures back up, with highs a good 10 to 15 degrees above normal for the final days of November! Weak ridging across the western CONUS is helping to keep dry and warmer weather across the forecast area.
Cooler today following the passage of a cool front, but those temps will still be running a little above the normal for this time of year. A dry airmass will prevail in the lower levels, although satellite still shows some mid and upper level moisture passing northwest to southeast across the forecast area. Moisture is quite limited but a weak cold front will move across the plains through the early morning hours. Main impact will be cooler temperatures today as 700mb temperatures cool down to around -3c today along with a strengthening low level inversion at 700mb.
Under quasi-zonal flow aloft, a mid/upper level low pressure system over West Central Texas will race east into and through the Lower Mississippi River Valley. As the disturbance and cold front exits the CWA, high pressure at the surface will quickly build back into the region through Sunday afternoon. Again, with increasing clouds and rain chances tonight into early Sunday morning, lows will be a good bit warmer as they fall into the low and middle 40s.
256 PM EST Sat Nov 27 2021 Broad high pressure is in place from the western Gulf Coast to the Great Lakes region, including the Southeastern CONUS. This cold front will move quickly and will push through the area on Sunday and Sunday night. As a result, an increase in mid to upper level clouds will be the main sensible impact ahead of this cold front. If mid-level energy ahead of this low spreads further north, some light sprinkles could be possible in the far southern portion of the forecast area on Sunday, but PoPs remain limited to 10 percent or less at this time.
Some clouds have moved into the lower Keys, especially Key West while skies elsewhere remain cloud-free. A decaying cold front will moving across the Florida Keys and surrounding coastal waters this morning. High pressure will build in behind this front, leading to slackening winds for the afternoon. A decaying cold front boundary will produce a wind surge, including gusty winds during the morning hours as well as an increase in cloud cover particularly in the Key West terminal.
As rain begins to fall, the lower levels will start to saturate, which will cause CIGS to begin to lower. However, as the column further saturates with time and the primary trof to our west makes further ewd progress, large scale lift should generate additional precip development later this afternoon and overnight.
High pressure remains in entrenched over much of the southeastern CONUS this morning. This ridge will keep a clipper system and its associated front well north of the area today. This should bring some warmer temperatures (10 to 15 degrees above yesterday's highs) back into the region with abundant sunshine expected as afternoon temperatures climb into the mid to upper 50s. While we won't be seeing any precipitation from this system, we will see northerly winds move back in Sunday afternoon as a dry front moves through out ahead of strong high pressure moving in from the northern Great Plains.
1033 AM MST Sat Nov 27 2021 18Z TAF CYCLE A back door cold front moving thru eastern NM will bring north to northeast wind gusts of 25 to 35 kt today.
With that will come a cooler air mass consisting of conditions more normal for this time of the year. Highs tomorrow afternoon are expected to range from the mid 50s near central KS to the lower 50s farther east in the state.
112 PM CST Sat Nov 27 2021 North to northwest breezes will diminish this evening as high pressure builds in from the northwest. Rising heights at 500 mb will temper the lows tonight even though waa will be weak until sfc winds shift to the south ahead of a clipper system on Sunday. Upper pattern remains dominated by a weak ridge trough pattern across the CONUS with northwest flow overhead.
121 PM CST Sat Nov 27 2021 A dynamic upper low is acting pretty much as expected. Located over the upper Trans-Pecos at noon today and still exhibiting a closed nature, the low is poised to hold that shape until it moves over west-central Texas early this evening when it is progged to begin opening up. As the low is progressing eastward we are beginning to see a reorientation of the deformation axis with the western end weakening and a consolidation of rain from the Rolling Plains into the Big Country. The results of this consolidation will result in rainfall across the southeastern quadrant of the forecast area this afternoon and likely into the early evening when mid/upper lift in the northeastern quadrant of the opening upper low finally wanes.
A dry cold front passage this moved through South Florida this morning. Dry and mostly sunny skies with high temps a few degrees cooler than yesterday. Overnight lows tonight from upper 40s possible western Lake region, the low 50s in the Interior with upper 50s to low 60s for the east coast. The benign weather pattern will continue into Sunday with high pressure dominating through the rest of the weekend. Another cold front will be working down the peninsula and move into the region towards the end of the short term.
1004 AM MST Sat Nov 27 2021 Water vapor shows upper ridge covering the western CONUS with trof tracking southeast across ALTA/SASK on the northern periphery of the ridge. At the surface, trof is moving eastward across the western Dakotas with cold front diving south across northern MT. Northwest winds will continue to increase this morning as trof advances eastward and cold front moves in from the north. Highs will be noticeably cooler than yesterday, and in the 40s to lower 50s.
Conditions improve to VFR around sunset, then a weak cold front arrives after midnight, bringing a wind shift to the north. (This afternoon through Sunday night) An upper low was located over KINK and is being sheared apart and moisture-starved by a one-two punch of a strong subtropical jet and substantial dry slotting. A cold front will then move across west Texas and southeastern New Mexico during the early morning hours Sunday, with winds becoming northerly as modest surface ridging builds south. Lows Sunday morning will range from near 30 over northern Lea County NM to the lower 40s along the Rio Grande. Winds will continue veering to a southerly direction Sunday night as surface lee troughing becomes established.
252 PM EST Sat Nov 27 2021 High pressure will move off the Southeast coast tonight. A fast- moving but dry cold front will cross the area late Sunday.
(This evening through Sunday) Early this afternoon, an upper level low was located across the Trans-Pecos region/Permian Basin. This low is forecast to track across Weest Central Texas this evening. A weak cold front will move through the area overnight, resulting in a wind shift to the north. Expect overnight low temperatures in the low to mid 40s. Highs on Sunday will be near seasonal normals, in the low to mid 60s. A weak cold front will move through the area Sunday morning, resulting in a wind shift to the north.
This will keep breezy southwest winds over southern Indiana and central Kentucky before a cold front pushes southeast into the CWA during the pre- dawn hours. 5- 10 mph winds with 15-18 mph gusts will advect cooler temperatures into the CWA during the day tomorrow. Tonight, low temperatures are expected to drop into the low 30s in most places, but a few rural spots, mainly in southern Indiana, could see the upper 20s as Louisville remains a warm 35.
142 PM CST Sat Nov 27 2021 Tale of two halves today with very light rain/freezing rain/sleet this morning resulting in some slick travel and accidents mostly along/n of Hwy 30. Winds will then begin to diminish further into the afternoon with the high approaching.
308 PM EST Sat Nov 27 2021 A fast moving clipper system will push southeast across the Great Lakes and mid Ohio Valley tonight, ushering in cooler temperatures for Sunday. High pressure will return to the area for Sunday night.
147 PM CST Sat Nov 27 2021 Surface analysis today shows a broad area of high pressure across much of the southeast US is wedged between a more potent storm systems over the Great Lakes Region and an area of low pressure in the western Gulf. A stacked mid/upper level low over the eastern Great Lakes will push a trough and weak, dry cold front through the region during the day on Sunday.
Low and mid-level warm advection will then return overnight, as the high moves off to the southeast and south/southwesterly surface winds develop. Breezy downslope winds are possible over the northern foothills overnight which would tend to keep low temperatures there a bit warmer than the nearby locations out on the plains.
At the surface, a weak low pressure system develops over the northern gulf and tracks southeast towards the central gulf into Sunday. There is some substantial dry air (exhibited by mean low level RH values in the 20 to 30% range) in the low levels for this precipitation to fall into, and will likely take a little time for wet bulb processes to overcome this. Highs today will top out in the upper 50's to lower 60's, with lows tonight much warmer in the lower to middle 40's.
(This evening through Sunday) Early this afternoon, an upper level low was located across the Trans-Pecos region/Permian Basin. This low is forecast to track across Weest Central Texas this evening. A weak cold front will move through the area overnight, resulting in a wind shift to the north. Expect overnight low temperatures in the low to mid 40s. Highs on Sunday will be near seasonal normals, in the low to mid 60s.