Aikyam-Lab/Synoptic-Bench huggingface dataset:
/issued 257 AM CDT Sat Oct 31 2020/ An upper level trough axis currently extending from Wyoming into the Texas Panhandle will pivot and shift east as the day progresses. Winds are mostly light and variable across the FA right now but will become breezy out of the west-southwest by later this afternoon in response to the trough axis' eastward progression. A relatively weak and dry cold front will push south through our region later this evening. The week will start off a bit cooler than today or yesterday behind tonight's cold front.
626 AM CDT Sat Oct 31 2020 For the 12Z TAFs, a weak cold front will move across the terminal sites very late this morning through the afternoon hours with north winds in its wake.
A cold front will reach HOB, MAF, INK by 01/03Z-04Z and the remaining sites later tonight with elevated winds developing behind the boundary. /issued 242 AM CDT Sat Oct 31 2020/ We made it to Halloween and it is looking like great day to get out and enjoy the weather! Weak ridging over the area will break down today as an upper trough moves across the Northern Plains. This trough will bring a cold front through tonight, but we are looking at much warmer temperatures ahead of it. Thick high clouds will keep it from getting any warmer. The cold front will move through the area after sunset bringing increasing northerly winds.
High pressure has shifted just east of the Tennessee Valley this morning, with clear conditions and calm winds allowing temperatures to slip into the lower 40s. With high pressure in control, expect plenty of sunshine once again and a warmer day as winds veer to the south. An upper-trough will shift out of the Great Lakes and into the Mid- Atlantic region tonight into Sunday morning, swinging a dry cold front through the Ohio and Tennessee Valleys. However, it will feel a bit chilly (despite highs in the low 60s), thanks to gusty northwest winds working to advect in this cooler air mass.
632 AM MDT Sat Oct 31 2020 The High Wind Warning expired at 6 AM for WY Zone 110. The High Wind Warning was cancelled a half hour later for WY Zones 106, 116 and 117. Low level winds and gradients were subsiding as a cold front moves through southeast WY. A cold front extended from central ND through north-central WY and southern ID. Periodic strong westerly winds will persist through the early morning hours when the cold front moves southeast across the CWA. It will be 10-20 degrees cooler today with 700mb temperatures between -2 and -6C yielding highs in the 40s to lower 50s. The early part of the week will be dominated by a building upper ridge of high pressure.
1000 AM EDT Sat Oct 31 2020 High pressure provides dry weather and continued cool temperatures.
Conditions will improve to VFR between 14-15Z and north winds develop as high pressure gradually builds into south Texas. Winds will become light tonight ahead of the high pressure ridge moving into the area Sunday.
Temperatures will top out in the lower 30s to lower 40s, about 10 degrees below climatological normals for the first of November. With ridging and largely zonal flow aloft through the majority of the period, this first week of November will help to make up for the uncharacteristically snowy week in mid October. However, the general consensus is that a deep trough will move onshore of the west coast Saturday, which would likely lead to a big pattern shift towards cooler, wetter, and windier conditions as it approaches the area.
/issued 1020 AM CDT Sat Oct 31 2020/ After a cool start this morning, temperatures have already risen into the lower 50s across much of the area. Highs will reach into the lower to mid 60s this afternoon. A cold front will move through the Midsouth Sunday, but moisture will be very limited, so no rain is expected. After midweek, another trough will shift over the Mississippi River valley. Tonight, temperatures will be slightly warmer than they are currently, mainly in the mid 40s. High temperatures will be slightly cooler tomorrow, in the upper 50s to low 60s.
A cold front will move through the area late tonight and Sunday, with cooler temperatures and gusty north winds Sunday.
The base of the trough is just north of the FA with mostly zonal flow aloft. Also, there is currently upper level ridge downstream over the Pacific Coast of Canada with a split flow trough just off the southern coast of California.
241 PM CDT Sat Oct 31 2020 A cold front will move across Illinois tonight bringing brisk northwest winds and much cooler temperatures for Sunday. Breezy conditions should subside somewhat this evening ahead of an approaching cold front currently over southeast Minnesota into western Iowa.
220 PM CDT Sat Oct 31 2020 Latest surface analysis is showing a warm front lifting north across the region with a cold front moving southeast across western Iowa and eastern Nebraska. Still expect the front to move southeast across the CWA tonight as upper trough currently seen on water vapor over the Upper Midwest will move into the western Great Lakes by early Sunday morning.
Sunny skies are helping temperatures rise quickly this Halloween morning with most places now well on their way to the low to mid 60s for Highs. However if you're wanting to see that almost full moon tonight, an increase of clouds with an associated cold frontal passage might inhibit perfect viewing conditions some. VFR will continue through at least 01/00Z under dry high pressure. An approaching cold front will bring an increase in cloudiness after 01/00Z. Passage of the cold front late in the taf period will shift winds to NW with gusts around 25KT.
A cold front will quickly shift east through the region late tonight into early Sunday morning. Behind this front, strong high pressure will quickly build southeast into the Lower Mississippi River Valley. Lows will fall into the 40s, with highs Sunday ranging from the lower 60s to lower 70s.
215 PM CDT Sat Oct 31 2020 A trough is situated over the Plains with ridges on either side of it. The associated cold front stretches from the Texas Panhandle to north central Kansas and to southeast Nebraska. As mentioned in the previous discussion, the winds will diminish with the pre-frontal trough axis. Highlights: 1) Halloween evening: Temps in lower 60s at 6PM, clear skies and 10- 15 mph winds 2) Cooler on Sunday with highs in mid to upper 50s 3) Gradual warm up Halloween evening: It will be a fairly nice evening for any outdoor activities. Cold air advection will move in behind the cold front and drop temperatures on Sunday by roughly 10 degrees. High pressure is expected to move in as the trough moving through the Plains today tracks to the Great Lakes on Sunday.
(This evening through Sunday) The cold front is moving into northwest Oklahoma this afternoon and will move southeast through the area this afternoon and evening. Temperatures behind the front will be roughly 10 degrees cooler than today on average.
At 850 mb and 700 mb, thermal ridges were in place from KS and NE through MN and the eastern parts of the Dakotas. Water vapor satellite imagery, in combination with recent RUC model initializations indicated that the trough stretched from Manitoba down to the TX panhandle. Winds will gradually decrease tonight as the atmosphere decouples and high pressure builds east across the northern and central parts of the Plains. Ridge axis should stretch from central ND to the TX panhandle by sunrise Sunday. That ridge will build east/southeast over our area during the day Sunday, with much lighter winds than today.
As of 2 pm, an associated cold front had pushed through all but the far southeast counties of the forecast area (Pratt/Barber/Comanche) and should be through the entire area before sundown. The cooler high pressure airmass will gradually ease off into eastern Kansas and Oklahoma by Sunday afternoon with return southerly flow setting up over western Kansas. Given the cooler airmass, highs on Sunday will be some 10-15 degrees cooler than today, in the upper 50s to lower 60s. Sunday night should be a little warmer than tonight as low level warm advection increases at the 850 millibar level. The upcoming week will be fairly mild and quiet as a broad upper level ridge develops over the western and central CONUS. The ridge gradually flattens out by mid week.
A cold front will turn our light sly winds today out of the nw during the overnight hours.
Quiet weather continues this afternoon as high pressure over the Mid- Atlantic influences the weather across the Ohio and Tennessee Valleys. Southerly return flow on the backside of the high as helped bump up temperatures into the upper 50s and low 60s under mostly clear skies. Temperatures will gradually fall in the early hours overnight, but then generally remain steady as a 40-45kt LLJ ramps up and clouds increase ahead of a cold front. A cold front will then approach and sweep through the area after sunrise tomorrow morning.
1107 AM EDT Sat Oct 31 2020 High pressure crosses today.
354 PM CDT Sat Oct 31 2020 Strong northwest winds continue to gust into the 35 to 45 mph range this evening as a cold front brings a cool Canadian air mass into the region. Afternoon temperatures remain in the low to mid 40s; however, skies should be mostly clear, so the sunshine should take the edge off for those outside.
1129 AM MDT Sat Oct 31 2020 The High Wind Warning expired at 6 AM for WY Zone 110. The High Wind Warning was cancelled a half hour later for WY Zones 106, 116 and 117. Low level winds and gradients were subsiding as a cold front moves through southeast WY. A cold front extended from central ND through north-central WY and southern ID. Periodic strong westerly winds will persist through the early morning hours when the cold front moves southeast across the CWA. It will be 10-20 degrees cooler today with 700mb temperatures between -2 and -6C yielding highs in the 40s to lower 50s. The early part of the week will be dominated by a building upper ridge of high pressure.
1115 AM MDT Sat Oct 31 2020 Aviation Section Updated Cooler temperatures are expected today in the wake of the winds that we had yesterday. The cooler temperatures will not last long, however, as temperatures rebound back into the mid to upper 50s on Sunday, with temperatures reaching the mid 60s to begin the work week. It might get a touch warmer in the valleys of Southwest MT, as the snow cover has melted out, and we will make these adjustments early this afternoon.
315 PM EDT Sat Oct 31 2020 High pressure slides offshore tonight with clouds increasing late.
New cooler air mass today behind yesterday's cold front.
Zonal flow aloft persists over the region today into Sunday as an upper level ridge quickly translates east across the Gulf of Mexico. An upper level trough pivots across the region Sunday morning, with an attendant dry surface cold front Sunday afternoon into evening. By the midnight witching hour we will be chilly in the lower to middle 50's for most locations, and near 60 along the coast. Cloud cover will be on the increase Sunday morning and afternoon with the approach of a dry cold front that should push through by mid-afternoon. Behind this, clear skies prevail and high temps will only make it to the lower 70's for most locations, with middle 70's possible across the coast and our southeastern CWA. A surface cold front will bring a change in wind direction tomorrow late morning/early afternoon.
An upper-trough will shift out of the Great Lakes and into the Mid- Atlantic region tonight into Sunday morning, swinging a dry cold front through the Ohio and Tennessee Valleys. However, it will feel a bit chilly (despite highs in the low 60s), thanks to gusty northwest winds working to advect in this cooler air mass.
An upper level trough currently moving into the Central Plains will send a cold front into the area tomorrow morning. Highs tomorrow will be in the lower 70s in the north where the front arrives earlier.
1106 AM MDT Sat Oct 31 2020 Cold front crossing the area is readily apparent on radar imagery tonight. A few midlevel-based showers have developed from sern MT/nern WY thru nwrn SD/swrn ND near the midlevel trof axis, but with otherwise fairly dry profiles, not expecting more than a few sprinkles (if that) out of this activity. Broad 850 mb jet core of 40-50 kt and corresponding 700 mb jet of 50-70 kt overspread nwrn SD during the morning hours as 850/700 mb CAA continues behind the deep cold front. Because 700 mb jet lingers across ern portions of our area (Ziebach/Haakon) thru the aftn and 850 mb winds/low-level thermodynamic characteristics are not noticeably different there compared to farther west, have opted to expand the High Wind Warning to include those zones.
The synoptic expectation consists of ridging or zonal flow aloft through at least mid week promoting air mass intrusion from the west and/or south. This should allow warmer temperatures to advect into the region with a cessation of this October's ever present northwesterly flow aloft pushing colder air masses into the Northern Plains.
Guidance came in cooler for Sunday night, with values across the north down into the lower 30's.
However, a cold front will move through late this afternoon into the early evening shifting breezy winds to the north. /issued 257 AM CDT Sat Oct 31 2020/ An upper level trough axis currently extending from Wyoming into the Texas Panhandle will pivot and shift east as the day progresses. Winds are mostly light and variable across the FA right now but will become breezy out of the west-southwest by later this afternoon in response to the trough axis' eastward progression. A relatively weak and dry cold front will push south through our region later this evening. The week will start off a bit cooler than today or yesterday behind tonight's cold front.
the dry cold front is expected to continue to slide east/southeast across Oklahoma and reach the CWA mid/late this evening.
Sunny skies are helping temperatures rise quickly this Halloween morning with most places now well on their way to the low to mid 60s for Highs. However if you're wanting to see that almost full moon tonight, an increase of clouds with an associated cold frontal passage might inhibit perfect viewing conditions some.
/Tonight/ Upper trof axis bisecting the CONUS this aftn, as the upper ridge remains centered over the nrn Gulf of Mexico. Trof axis will continue to shift ewd tonight, bringing a reinforcing shot of cold air to our region. Despite the front's arrival tonight, overnight temps will run a few degrees warmer than in previous nights, likely due to a combination of today's warmer temps, some cloud cover, and increasing wind speeds in the wake of the front. Flow aloft will become nwly in the wake of the trof axis Sunday, with gusty nly winds at the sfc in response to the tightening pressure gradient. High pressure to settle in at the sfc overnight Sunday night, allowing for light winds, clear skies, and maximized radiational cooling.
Tomorrow, northwest flow will continue as a ridge begins to shift east over southeastern Montana. Carrothers High pressure ridging, along with gusty westerly downslope winds, will prevail through the middle of the week.
Winds are pretty stout on MOS guidance, following fairly well with the pressure rises behind the cold front, so have decided to shift out High Wind Watch to a High Wind Warning covering the same time frame outlined with the Watch (06z-18z Sun). Winds will decay heading into the evening Sunday with high pressure sliding into the central and southern plains.
Cirrus should clear the forecast area later this afternoon as axis of an upper level ridge moves onshore.
Passing high clouds and gusty southerly winds should remain common across the CWA through the afternoon hours ahead of a dry cold front forecast to push into Northeast Oklahoma mid/late evening. the dry cold front is expected to continue to slide east/southeast across Oklahoma and reach the CWA mid/late this evening.
915 AM MDT Sat Oct 31 2020 Cooler temperatures are expected today in the wake of the winds that we had yesterday. The cooler temperatures will not last long, however, as temperatures rebound back into the mid to upper 50s on Sunday, with temperatures reaching the mid 60s to begin the work week. It might get a touch warmer in the valleys of Southwest MT, as the snow cover has melted out.
233 PM MDT Sat Oct 31 2020 With an upper level ridge of high pressure building in over the region, expect afternoon temperatures to be above normal for the next several days.
1020 AM CDT Sat Oct 31 2020 After a cool start this morning, temperatures have already risen into the lower 50s across much of the area. Highs will reach into the lower to mid 60s this afternoon. A cold front will move through the Midsouth Sunday, but moisture will be very limited, so no rain is expected. After midweek, another trough will shift over the Mississippi River valley. Tonight, temperatures will be slightly warmer than they are currently, mainly in the mid 40s. High temperatures will be slightly cooler tomorrow, in the upper 50s to low 60s.
The long wave pattern will start out strongly amplified across the CONUS, with a deep trough entrenched across the East, while sharper ridging extends from the Southern Plains all the way through the Yukon/Northwest Territories. The pattern then amplifies once again towards the end of the week, as a deep trough digs in across the West. Further east, there are some model differences regarding the handling of short wave energy, which looks to eventually cut off as it moves into the lower Mississippi Valley/Deep South. Either way, ridging looks to be the result across the Ohio and Tennessee valleys, allowing for a long stretch of dry weather, as well as gradually moderating temperatures through the period.
1232 PM CDT Sat Oct 31 2020 South-southwesterly flow will strengthen throughout the day ahead of a cold front progressing southeastward across the Central Plains towards the Midwest. The cold front is progged to traverse the forecast area tonight; however, the passage of the front will be dry in the absence of sufficient moisture with PW ahead of front remaining below 0. Pfahler Global model guidance is in good agreement that an upper-level ridge will become centered over the Central U.
Sharp thermal trough with 850 mb temps plunging to minus 10C or lower Sunday afternoon and evening. Some rain will mix in near the shore because of the warmer lake temps.
218 PM MDT Sat Oct 31 2020 Winds are still in the process of slowly diminishing across the CWA in the wake of this mornings cold front. Sunday will be dry and a little warmer than today, as a high, surface and aloft, builds in from the west with highs in the 50s, except in the 60s where better mixing will occur from RKS to CPR to BYG.
Conditions will change tonight as isentropic lift develops along the SW flank of the wedge ridge/cold air damming evolving along the east coast. The cold front currently in place over the Plains will make a lot of headway in the next 12-18 hours, and is forecast to move across the TN Valley Sunday morning (mostly in the 15-18Z timeframe).
328 PM EDT Sat Oct 31 2020 A trough just off the GA/SC coast will persist through much of Sunday. Westerly flow aloft will transition to a broad eastern trough through Sunday. This will push a cold front into GA Sunday afternoon and evening.
311 PM EDT Sat Oct 31 2020 High pressure slides offshore tonight with a milder return flow on sunday allowing temperatures to briefly rebound to near normal.
Even though clouds will be on the increase this evening as a cold front approaches, fairly reasonable temperatures can be expected for any outdoor evening festivities. As the cold front nears Middle Tennessee early Sunday morning, a few Plateau showers may pop up ahead of the front, but shouldn't be too much of a worry.
A cold front will pick up speed as an associated upper level trough digs along the Candadian border. A dry cold front will pass across the region tonight between 04Z and 08Z and shift winds from south to northwest.
A cold front will push through the area tomorrow, bringing north to northwest winds and clear conditions. High pressure centered over the northeast this morning will slide eastward into the Atlantic today.
A weak cold front mill move through the area overnight, w/fropa at KHOB ~ 03Z, and thru KFST around 08Z. /issued 242 AM CDT Sat Oct 31 2020/ We made it to Halloween and it is looking like great day to get out and enjoy the weather! Weak ridging over the area will break down today as an upper trough moves across the Northern Plains. This trough will bring a cold front through tonight, but we are looking at much warmer temperatures ahead of it. Thick high clouds will keep it from getting any warmer. The cold front will move through the area after sunset bringing increasing northerly winds.
A backdoor cold front will slide down the eastern plains later today and push through the central mountain chain late this evening, resulting in an east canyon wind at KABQ with gusts to near 30kts. Warmer and drier weather continues today for most areas, with a modest backdoor cold front moving through the eastern plains late today through tonight.
A weak cold front will be moving through any time now, and winds will be turning to the north around 10 kts gusting up to 20 kts. /Issued 626 AM CDT Sat Oct 31 2020/ For the 12Z TAFs, a weak cold front will move across the terminal sites very late this morning through the afternoon hours with north winds in its wake.
144 PM MDT Sat Oct 31 2020 The large scale synopic pattern shows an upper level trough moving east over the Plains late today while an upper level ridge sits over the West Coast, and a weak cut-off upper level low is south of the bight of Southern California. During the day Sunday, the upper level ridge suppressed across far southern TX and the Gulf of Mexico will build northwest between the digging trough over the eastern U. and the cut-off low off Southern California.
Aloft, a mid level trough was located over the Plains while a ridge was located over the Eastern Pacific. High temperatures will be cooler with readings in the low to mid 50s expected.
Winds will become light tonight ahead of the high pressure ridge moving into the area Sunday.
140 PM CDT Sat Oct 31 2020 The primary concerns for this short term package are strong gradient winds Sunday and the high potential for a widespread freeze Sunday night. Other than a cold front late tonight, the short term will be dominated by high pressure. The advertised moisture-starved cold front will move rapidly southeast across the FA late tonight and should be exiting the southern Pennyrile by around daybreak. The front will usher in a considerably cooler air mass for the late weekend and into the early part of the new week.
Otherwise, south winds will continue today, but will return from the north tomorrow as another cold front makes it into the region. That trough will send an associated dry cold front through the region Sunday morning. Slightly cooler across northern areas on Sunday, with highs forecast in the upper 60s to low 70s across the Hill Country and Central Texas.
A dry cold front will move across the state tonight with the only noticeable change being a wind shift. Winds tonight will shift to the northwest at 4 to 8 mph behind a cold front. Today Through Sunday Night High pressure will depart to the east today, with winds becoming more southerly.
1229 PM EDT Sat Oct 31 2020 A strong cold front will move through late tonight and Sunday.
A cold front will slide south across the region late tonight, leading to a cooler close out to the weekend back on Standard Time.
241 PM EDT Sat Oct 31 2020 A strong cold front will move through late tonight and Sunday.
So the high temperatures will continue to show a slight warming trend from today with highs mainly in the lower 80s except for near the coast and the Victoria Crossroads. High pressure will be building into the area Sunday night behind the cold front.
High temperatures will be cooler with readings in the low to mid 50s expected.