Aikyam-Lab/Synoptic-Bench huggingface dataset:
Nebraska lies in quasi-zonal flow aloft as a weak and progressive upper ridge crosses the Dakotas. The state is flanked between a Northeast US trough moving into the Atlantic and another trough digging into the northern Rockies. Southerly flow at H85 kicks into high gear this afternoon ahead of the thermal ridge. Blended in warmer guidance (MAV and ECM) to result in upper 50s north central and lower/mid 60s elsewhere. Guidance is in good agreement regarding a 50 kt LLJ developing over the High Plains. The cold front is progged to cross western Nebraska early in the day, generally 12-15z. Confidence is not as high for max temps due to the fropa timing , so went generally middle of guidance between cool MET and warmer MAV/ECM.
Below normal temperatures and dry conditions are expected through the short term with high pressure in control. Mild temperatures are expected this afternoon with highs reaching the low to mid 70s under mostly sunny skies.
The inversion will weaken on Friday as high pressure builds across the western Great Lakes region and drier air advects in from the west.
Temperatures will rebound today into Saturday as southerly winds return and a H85 thermal axis shifts into the Lower Missouri Valley. A cold front will push through the forecast area Saturday evening, but with little tropospheric moisture present, dry weather is expected.
442 AM EDT Fri Oct 30 2020 The remains of Zeta move off to the east today with high pressure building in for the weekend.
341 AM CDT Fri Oct 30 2020 As of 08Z Friday morning, a longwave midlevel trough resided across the eastern CONUS with ridging across the west. Even with the frontal passage, downslope flow behind front should allow for temperature to reach the low to middle 60s area wide. Overnight lows look to reach the low to mid 40s.
249 AM CDT Fri Oct 30 2020 The winter storm from earlier this week is now a distant memory as a benign weather pattern takes hold with much warmer temperatures. Weak ridging over Texas will return temperatures to near normal today and even above normal Saturday. A light west wind will bring warmer temperatures Saturday with highs back near 80.
Friday through Saturday night look to feature quasi zonal flow aloft with south-southwesterly surface winds today and west- southwesterly winds Saturday as weak lee troughing occurs to our north and northwest.
On Saturday, will see winds pickup from the south to southwest ahead of a deepening upper level trough and associated cold front.
258 AM CDT Fri Oct 30 2020 In wake of a strong cold front, temperatures have dipped significantly from their peak in the low to mid 70s yesterday with breezy NW flow reinforcing this colder air mass. High pressure will become firmly established across the area as it builds in from the northwest tonight into the weekend. The clear and calm conditions tonight will result in good setup for radiational cooling even cooler temperatures, with lows bottoming out in the upper 30s to around 40 degrees.
Upper-level ridging to maintain weak northwest flow aloft allowing for dry and stable conditions through Saturday.
Cold air moving southward west of the exiting system, and front high pressure building eastward has produced rather chilly conditions in comparison to the past few days, with temperatures in the upper 40s to lower 50s, and NW winds of 5-15 mph. General isentropic downglide, drier air filtering east, and daytime heating/mixing will erode the low clouds, leading to sunny skies across the area this afternoon.
209 AM MDT Fri Oct 30 2020 Ridge over the area this morning breaks down this evening allowing a cold front to push through the area. Along the Bighorn mountain foothills, Sheridan could see a period of gusty 30 to 45 mph) downslope winds late afternoon and early evening ahead of the cold front as well. Cold front arrives early this evening and quickly pushes through the area by midnight. Saturday will be 10 to 20 degrees cooler behind the front with highs mainly in the 45 to 55 degree range.
/issued 932 PM CDT Thu Oct 29 2020/ Cloud cover being a little stubborn across the southeast half of our region this evening as northeast winds in the lowest 5kft is putting a halt so to speak on the west to east clearing trend. While winds have decoupled from their earlier gusts this afternoon, looking at observations across our northwest, winds between 5 and 10kts continue from the northwest and with the ridge axis expected to remain to our northwest tonight, winds should not go completely calm.
644 AM EDT Fri Oct 30 2020 High pressure to the north will provide cooler and drier air into the weekend.
539 AM CDT Fri Oct 30 2020 As of 08Z Friday morning, a longwave midlevel trough resided across the eastern CONUS with ridging across the west. Even with the frontal passage, downslope flow behind front should allow for temperature to reach the low to middle 60s area wide. Overnight lows look to reach the low to mid 40s.
543 AM MDT Fri Oct 30 2020 Dry conditions with generally warmer than average temperatures are expected from today through the weekend.
638 AM CDT Fri Oct 30 2020 Large-scale subsidence will occur on today in the wake of a departing upper-level trough and as an upper-level ridge builds into the central United States. Despite the sunshine, high temps across the forecast area will only reach 5 to 10F below normal due to a cooler airmass in place. Friday night into Saturday, the upper-level ridge will shift eastward into the Great Lakes upon approach of a deepening upper- level trough entering the Plains. As a result, low-level flow is expected to strengthen and turn to the south-southwest ahead of a cold front attendant to the upper-level trough. 75" ahead of the cold front. This lack of more substantial moisture will preclude precip to accompany the passage of the cold front Saturday night.
/issued 249 AM CDT Fri Oct 30 2020/ The winter storm from earlier this week is now a distant memory as a benign weather pattern takes hold with much warmer temperatures. Weak ridging over Texas will return temperatures to near normal today and even above normal Saturday. A light west wind will bring warmer temperatures Saturday with highs back near 80.
/issued 350 AM CDT Fri Oct 30 2020/ Early morning sfc analysis shows high pressure centered over TX/OK ridging ewd and providing a nrly low-level flow across the forecast area. With plentiful sunshine and CAA gradually shutting down, afternoon temps look a little warmer than yesterday with highs mainly in the mid/upper 60s. A good of radiative cooling will allow temps to cool to the lower/mid 40s for all but the immediate coastline tonight.
Expecting slightly warmer than average temperatures today with highs generally in the 60s across the area along with mainly zonal flow aloft. Unfortunately for our ongoing drought, no precip is expected with this trof as the mid and upper levels appear too dry. Saturday will for the most part be similar to today though breezier (mainly in the afternoon) as the pressure gradient tightens on the backside of the sfc trof.
As high pressure builds over the forecast area, the cold advection pattern and stratus will diminish. Sunny skies this afternoon should allow temperatures to rebound into the lower 60s at most locations.
533 AM CDT Fri Oct 30 2020 High pressure will bring cool air and light winds to central and southeast Illinois today.
430 AM CDT Fri Oct 30 2020 Large-scale subsidence will occur on today in the wake of a departing upper-level trough and as an upper-level ridge builds into the central United States. Despite the sunshine, high temps across the forecast area will only reach 5 to 10F below normal due to a cooler airmass in place. Friday night into Saturday, the upper-level ridge will shift eastward into the Great Lakes upon approach of a deepening upper- level trough entering the Plains. As a result, low-level flow is expected to strengthen and turn to the south-southwest ahead of a cold front attendant to the upper-level trough. 75" ahead of the cold front. This lack of more substantial moisture will preclude precip to accompany the passage of the cold front Saturday night.
231 AM PDT Fri Oct 30 2020 High pressure will prevail over eastern California and western Nevada for the upcoming week. Relatively quiet weather the next few days as high pressure over the southwest continues to strengthen. Clear skies and warm afternoons are expected the next few days with well above normal high temperatures in the low to mid 70s.
Light north winds expected as high pressure resides over the area. Below normal temperatures and dry conditions are expected through the short term with high pressure in control. Mild temperatures are expected this afternoon with highs reaching the low to mid 70s under mostly sunny skies.
622 AM CDT Fri Oct 30 2020 Early this morning, warm air advection-induced mid level stratus persists along and east of the Buffalo Ridge.
Warmer. With light surface winds tonight, lows will continue to be cooler than usual, but warmer than lows this morning.
941 AM CDT Fri Oct 30 2020 A much cooler day in store for the Tennessee Valley today in the wake of a cold front that served as the final push for the persistent tropical airmass. Northwest flow has settled in aloft, and winds have begun to weaken as the upper trough exits off the northern Atlantic Coast, leading to a slack in gradient driven winds. High pressure will become firmly established across the area as it builds in from the northwest tonight into the weekend. The clear and calm conditions tonight will result in good setup for radiational cooling even cooler temperatures, with lows bottoming out in the upper 30s to around 40 degrees.
So, what's foreseen in the National Weather Service's crystal ball this morning? Well, there's a monster of a high pressure ridge over the Eastern Pacific that's in control now and it's going to keep the central California interior locked in a long, dry and dusty spell that not even a witch or warlock can undo. We're prepared to slab another six days to that count while this high pressure ridge is cemented over us.
Cooler, Fall-Like Behind Cool Front Today. Much drier and cooler air has filtered in behind the front as morning lows reached the low to mid 60s across much of the I-4 Corridor and Lake County. Pleasant and more seasonal overnight lows with low 60s across much of the interior, except upper 50s possible over normally cooler rural areas of Lake/inland Volusia counties.
426 AM CDT Fri Oct 30 2020 Early this morning, warm air advection-induced mid level stratus persists along and east of the Buffalo Ridge.
/Issued 408 AM EDT Fri Oct 30 2020/ Fcst kicks off with some cold advection stratocu across the NW half of the CWA that should have some gradual scattering/clearing from SE to NW after sunrise this morning allowing for mostly clear and benign ridge dominated remainder of the short term. Temps remain below climo norms in the post cold frontal regime thru period. Highs today and Saturday will be in the low 60s for much of north GA and mainly 50s for the far north mtns.
632 AM CDT Fri Oct 30 2020 (Today and tonight) Will keep Freeze Warning going through early this morning as a few observations are nearing the freezing mark. After the chilly start, warmer today with relatively light wind most of the day as low level ridge settles in over the region.
A break in the cloud cover earlier tonight allowed most of the area to cool into the lower to mid 30s. Light winds and weak mixing will likely hold temperatures near to a perhaps bit warmer than the past couple days. Forecast highs range from the mid 40s north to the lower 50s in the south. Tonight should see mostly clear skies with initially light easterly winds increasing and backing to the south around 10 to 15 mph by morning as the surface pressure gradient tightens ahead of a cold front developing in the plains. Key messages: 1) Warmer and windy on Saturday.
In wake of a strong cold front, temperatures have dipped significantly from their peak in the low to mid 70s yesterday with breezy NW flow reinforcing this colder air mass. High pressure will become firmly established across the area as it builds in from the northwest tonight into the weekend. The clear and calm conditions tonight will result in good setup for radiational cooling even cooler temperatures, with lows bottoming out in the upper 30s to around 40 degrees.
The marine layer remains fairly shallow per profiler data, which should allow stratus to scatter out by late morning and yield another sunny and mild afternoon at the coast, with warmer temperatures inland. Winds will remain on the light side with the exception of some very localized gusty conditions and critical fire weather concerns on a few exposed ridgetops. The ridge will quickly rebuild overhead tonight and remain in place through the weekend, with continued sunny skies and seasonably warm temperatures for most of the area as humidities slowly moderate across the interior.
MVFR conditions across all mid-state terminals at issuance due to an upper level low on the backside of our current weather system.
There will be a few spots over our northwest counties where readings will reach the freezing mark, however. A brief warmup is expected Saturday with afternoon highs rebounding into the mid-upper 60s across North Texas and the low 70s over Central Texas.
Despite the sunshine, 925 mb temps will be down around 0c, so we'll only see highs get up into the lower 40s at best. We stuck close to the NBM, which goes the cooler/cloudier route.
Otherwise, the warming trend is expected to continue today as a ridge of high pressure persists over the western U. Highs today are expected to generally reach the lower to mid 60s across the plains and lower to upper 50s in the high valleys. Temperatures cool down into the 30s across the plains and teens to 20s in the high valleys. Dry weather expected through the majority of the extended with the next progressive trough glancing by to the north early Saturday. This will send a back door cold front into the southeast plains during the afternoon which should drop back high temperatures a few degrees once the front spreads in.
555 AM CDT Fri Oct 30 2020 Northwest mid/upper flow will flatten some today as a low amplitude mid/upper ridge translates eastward across the central CONUS. Low level southerly flow will allow temperatures to continue to moderate with highs returning to more seasonable values in the low to mid 60s. A vigorous mid/upper trough moving across Manitoba into southwest Ontario on Saturday will drive a cold front south across the Central Plains. This front will keep highs near normal across much of the area on Saturday with afternoon values topping out in the low to mid 60s once again.
As high pressure influences build in and eventually push east of mid state region as weekend progresses, temperatures are once again expected to warm up closer to seasonal normal values by Saturday afternoon.
Issued by National Weather Service Dodge City KS 1103 AM MDT Fri Oct 30 2020 Dry conditions with generally warmer than average temperatures are expected from today through the weekend.
1223 PM CDT Fri Oct 30 2020 As of 08Z Friday morning, a longwave midlevel trough resided across the eastern CONUS with ridging across the west. Even with the frontal passage, downslope flow behind front should allow for temperature to reach the low to middle 60s area wide. Overnight lows look to reach the low to mid 40s.
1222 PM CDT Fri Oct 30 2020 Large-scale subsidence will occur on today in the wake of a departing upper-level trough and as an upper-level ridge builds into the central United States. Despite the sunshine, high temps across the forecast area will only reach 5 to 10F below normal due to a cooler airmass in place. Friday night into Saturday, the upper-level ridge will shift eastward into the Great Lakes upon approach of a deepening upper- level trough entering the Plains. As a result, low-level flow is expected to strengthen and turn to the south-southwest ahead of a cold front attendant to the upper-level trough. 75" ahead of the cold front. This lack of more substantial moisture will preclude precip to accompany the passage of the cold front Saturday night.
Satellite shows low clouds over the Gulf, possibly associated with a weak coastal trough. High pressure is over the area with moderate northwest to north winds. Winds will eventually shift/veer to east late Saturday as local high pressure shifts east. Light north winds expected as high pressure resides over the area. Below normal temperatures and dry conditions are expected through the short term with high pressure in control. Mild temperatures are expected this afternoon with highs reaching the low to mid 70s under mostly sunny skies.
Approaching cold front is seen on satellite as a thin cloud band extending from Montana through central Idaho to southern Oregon. Clearing and calming overnight, then sunny and cooler Saturday.
A much cooler day in store for the Tennessee Valley today in the wake of a cold front that served as the final push for the persistent tropical airmass. Northwest flow has settled in aloft, and winds have begun to weaken as the upper trough exits off the northern Atlantic Coast, leading to a slack in gradient driven winds. High pressure will become firmly established across the area as it builds in from the northwest tonight into the weekend. The clear and calm conditions tonight will result in good setup for radiational cooling even cooler temperatures, with lows bottoming out in the upper 30s to around 40 degrees.
This will bring a cold front down the High Plains, but this front will be of Pacific origin with fairly strong downslope modification, thus the temperature pull-back will not be all that great over the weekend.
310 PM CDT Fri Oct 30 2020 High pressure over Wisconsin will move off to the east tonight. It will be replaced by a tightening pressure gradient crossing the area as a vigorous area of low pressure enters central Manitoba. A warm front will cross the region tonight, exiting in the early morning. As the aforementioned low moves into northwest Ontario Saturday, its cold front sweeps through the area. As the cold front departs late Saturday night, a drying trend begins with mid level and surface ridging beginning to build into the area from the West.
1223 PM CDT Fri Oct 30 2020 Northwest mid/upper flow will flatten some today as a low amplitude mid/upper ridge translates eastward across the central CONUS. Low level southerly flow will allow temperatures to continue to moderate with highs returning to more seasonable values in the low to mid 60s. A vigorous mid/upper trough moving across Manitoba into southwest Ontario on Saturday will drive a cold front south across the Central Plains. This front will keep highs near normal across much of the area on Saturday with afternoon values topping out in the low to mid 60s once again.
Surface ridging and clear skies will yield prime radiational conditions. BW Chattanooga Airport, TN 57 41 64 49 65 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 55 38 62 47 62 / 0 0 0 0 0 Oak Ridge, TN 55 37 62 47 62 / 0 0 0 0 0 Tri Cities Airport, TN 52 34 60 41 59 / 10 0 0 0 10.
A dry high pressure axis will move across the area during the next 24 hours.
High pressure is expected across the area into Saturday.
This wave will help to push a cold front through the area between 7 and 10 pm.
Only the 12z RAP BUFKIT soundings showed Lemmon, Mobridge, or Pierre briefly gusting to 50 kts between 21 and 23z. Cannot completely rule out an isolated gust on one of the ridges during the late afternoon, though. High pressure then builds in at the sfc Saturday night.
1241 PM CDT Fri Oct 30 2020 Conditions at all terminals now VFR as lower ceilings have cleared out of most of the lower Acadiana area. /issued 350 AM CDT Fri Oct 30 2020/ Early morning sfc analysis shows high pressure centered over TX/OK ridging ewd and providing a nrly low-level flow across the forecast area. With plentiful sunshine and CAA gradually shutting down, afternoon temps look a little warmer than yesterday with highs mainly in the mid/upper 60s. A good of radiative cooling will allow temps to cool to the lower/mid 40s for all but the immediate coastline tonight.
A trailing cold front from the low will advance from MT and WY into the western Dakotas overnight tonight. South winds will increase tonight across our area as the surface pressure gradient tightens ahead of the trailing cold front. At least some of this stronger wind will mix to the surface, especially across the Sandhills/northern Nebraska and atop higher ridges. Then the focus turns to strong gusty winds developing as the cold front crosses the area Saturday. Did trend humidity down some to near 30% during the afternoon and will mention the lower humidity and potential fire weather concerns in the Hazardous Weather Outlook.
Temperatures will be much warmer Saturday. As strong, cold air advection develops across the region in the wake of the cold front, northwest winds will climb into the 15 to 30 mph with gusts to 40 mph.
Higher elevation areas will see better mixing with slightly stronger wind speeds and this will help lows up a little warmer. Warming trend continues into Saturday with highs climbing well into the 70s areawide, (Saturday night through next Friday) Upper level short wave will move from the Northern Plains into the Great Lakes region Saturday evening, and will send the next cold front south across the area Saturday night.
312 PM CDT Fri Oct 30 2020 Tonight-Saturday: Upper ridge axis is quickly translating across the area today- tonight as next upper trough moves across KS on Saturday. This trough will exit southeast KS Saturday evening.
Temperatures have remained in the lower 50s in this region while some parts of the west have warmed into the mid 50s. As high pressure builds over the forecast area, the cold advection pattern and stratus will diminish. Sunny skies this afternoon should allow temperatures to rebound into the lower 60s at most locations.
233 PM EDT Fri Oct 30 2020 High pressure to the north will provide cooler and drier air into the weekend.
216 PM CDT Fri Oct 30 2020 Current satellite and model analysis depicts an upper-level high centered over the Texas coastline with a ridge extending northwestward over the FA into southeast CO. By Saturday night the base of this trough is progged to skirt just north of the FA. Saturday night a cold front will move through the area dropping temperatures to around freezing or just below for the northern half of the FA, while the south will be just above freezing in the 30s.
Clouds and winds to ease late tonight as trough retreats to east. Broad ridging pattern still expected to lend tranquil, cool weather over next few days.
High pressure across Texas will lead to continued cool and dry conditions under mostly clear skies. With the dry conditions in the mid-levels and a slight increase in low level moisture, there is some potential for patchy fog late Saturday night, but confidence is low as the low level moisture may not be sufficient enough.
Halloween: A cold front is expected to slide through the area during the day on Saturday.
High pressure will build from the northwest this afternoon, to the north Tonight. The high will build more toward the northeast Saturday, and remain through Saturday night. As the high builds more toward the north northeast Saturday and strengthens this will produce an increasingly moist onshore flow. An inverted trough of low pressure is expected to develop in this onshore flow pattern early Saturday. This inverted trough will provide convergence and lead to scattered to numerous showers developing over the coastal waters and moving ashore through the day. The best chance for showers will be at the coast, with activity diminishing as it moves inland and encounters the cooler and drier airmass. The high and inverted trough will weaken into Saturday night, decreasing potential for coastal showers with temperatures running above seasonal averages.
High pressure over the region will slide east tonight into tomorrow, resulting in an increase in south winds, especially on Saturday.