Aikyam-Lab/Synoptic-Bench huggingface dataset:
1238 AM CDT Sat Oct 12 2019 Strong upper level ridging will remain in place across the western US through Saturday night. Despite plenty of sunshine, cold air advection into the region behind the departing low over the upper Great Lakes will keep temperatures on the cooler side. Highs Saturday afternoon will range from the mid 40s in the north to the low 60s south of I-80. Overnight low temperatures will also be chilly with lows in the low to mid 20s tonight. Lows Saturday night will be slightly warmer in the low to upper 20s. High pressure and quiet weather will continue through the remainder of the forecast period.
128 AM EDT Sat Oct 12 2019 A mixture of VFR and MVFR cigs through this taf cycle as a cold front an associated llv moisture intrude.
Winds have picked up, albeit slightly, north and east of the ridge. As of 2 am, temperatures had (mostly) fallen to the low/mid 30s.
A deep upper low is currently centered over the eastern Dakotas slowly moving eastward into Minnesota. Saturday will be significantly warmer than today, partially aided by more westerly, downslope winds at the surface. High temperatures should range from the mid 50s to the lower 60s. Saturday night will be similar to the preceding couple nights, just possibly a few degrees warmer, especially in northern Kansas.
The season's first significant intrusion of arctic air has been enough to produce widespread freezing temperatures this morning. Once freezing conditions are met, the FROST/FREEZE products are shelved for the season. Widespread sunshine will help promote warmer temperatures.
1157 PM EDT Fri Oct 11 2019 A ridge of high pressure will remain over Central and Eastern Pennsylvania through tonight. A weakening cold front will sweep across the area Saturday afternoon.
The wind will be gusty above timberline and in the higher foothills, especially during the morning hours. High temperatures today will continue to increase, with highs in the lower 60s for Denver.
1126 PM MDT Fri Oct 11 2019 The low pressure system continues to shift toward the Great Lakes region, allowing skies to clear from west to east across the northern plains. Still beneath the upper trough, the region will remain chilly and breezy Saturday.
218 AM EDT Sat Oct 12 2019 Shower chances return by morning with the approach and passage of a cold front.
Cold front has now advanced well east of the forecast area with radar clear of any precip. Cold front now exiting Acadiana with radar depicting scattered convection along boundary. Temperatures climbed into the lower 80s as rains moved in from the northwest.
Seeing as clouds will clear out in the west first, locations west of I-65 are expected to be a touch warmer this afternoon.
224 AM MDT Sat Oct 12 2019 08z surface analysis had low over KRRT, which was under upper low vigorously spinning over northwest MN. Today/tonight, stacked low slowly shifts east as upper ridge over the northern Rockies shifts follows suit.
746 AM EDT Sat Oct 12 2019 Showers will end by early afternoon with the passage of a cold front. Dry weather with seasonably cool temperature return for Sunday under high pressure. A deep upper low should continue to track across the Upper Great Lakes today, as its associated cold front crosses the Upper OH Valley region. Dry weather should continue tonight as high pressure builds further across the Upper OH Valley region. With the center of the high overhead, expect wind to diminish, and efficient radiational cooling. Recent guidance has trended cooler tonight. With the cooler temperatures and nearly calm winds, issued a Frost Advisory for much of the area in coordination with surrounding NWS offices.
The downsloping near KCYS is likely aiding in greater realized temperatures given the low dewpoints and dry air remaining in place.
233 AM PDT Sat Oct 12 2019 Warmer temperatures and light winds are expected today as high pressure moves across the region. Otherwise, the next few days will feature overall quiet weather with temperatures warming to near seasonal averages of lower 70s for western NV valleys, and 60s near the Sierra (Sunday may be a couple degrees warmer in most lower elevations).
Near average temperatures with cooler then normal temperatures mid to late week. A short wave ridge will be pushing to the east as troughing begins to set up over the west this weekend. No rain is expected with this troughing but some clouds are forecasted mainly later in the day today into Sunday.
/Today through Sunday Night/ Freeze warning remains in effect through mid-morning across McCurtain, Sevier, and Howard counties as temperatures are progged to fall into the lower 30s across these areas. Temperatures tonight to be slightly warmer, ranging from the lower 40s across I-30 to around 50 elsewhere.
726 AM EDT Sat Oct 12 2019 Aviation - Dangerous conditions on piers with beach erosion into Sunday - Gusty winds today - Cooler weather for the remainder of the weekend The deep mid level low over Northern MN will track very slowly east over the next couple of days.
Headlines look to be in good shape for now as low pressure located over the northwestern corner of Minnesota is beginning to wrap snow back into the region. The low will meander to the east throughout the day today before finally exiting Minnesota into Ontario late tonight. In addition, the Coteau may also see very light freezing rain overnight tonight. Lows tonight will range from the low 20s west River to low 30s on the lee of the Coteau and west central Minnesota.
Sfc cold front has pushed well into eastern Kentucky but has a classic anafront configuration, so we are still seeing scattered light rain showers east of a line from Frankfort to Green River Lake to Scottsville.
633 AM CDT Sat Oct 12 2019 Mostly clear skies and a very cool Canadian air mass have allowed for widespread freezing temperatures this morning. Precipitation- wise, the large upper-level low pressure currently located over northern MN will continue to impact the region. However, warm ground, diffuse sunlight, and temperatures above freezing should minimize the impact on roads. Huron to De Smet to Madison, SD will be an exception, as temperatures around these locales will largely stay below freezing, allowing for another inch or two of accumulation. Temperatures again drop slightly below freezing tonight into Sunday morning.
535 AM EDT Sat Oct 12 2019 Mainly morning showers should end today with the passage of a cold front. Dry weather with seasonably cool temperature return for Sunday under high pressure. A deep upper low should continue to track across the Upper Great Lakes today, as its associated cold front crosses the Upper OH Valley region. Dry weather should continue tonight as high pressure builds further across the Upper OH Valley region. With the center of the high overhead, expect wind to diminish, and efficient radiational cooling. Recent guidance has trended cooler tonight. With the cooler temperatures and nearly calm winds, issued a Frost Advisory for much of the area in coordination with surrounding NWS offices.
425 AM MDT Sat Oct 12 2019 Mild autumn weather will return to southern Colorado today and tonight as upper level ridge over the wrn U.
525 AM EDT Sat Oct 12 2019 A ridge of high pressure will remain over Central and Eastern Pennsylvania through tonight. A weakening cold front will sweep across the area Saturday afternoon.
630 AM CDT Sat Oct 12 2019 High pressure is now in firm control of the region but is beginning to move off the to the east.
Chattanooga Airport, TN 67 47 74 50 / 30 20 20 10 Knoxville McGhee Tyson Airport, TN 63 46 75 50 / 30 10 20 10 Oak Ridge, TN 63 43 74 46 / 30 10 10 10 Tri Cities Airport, TN 62 47 74 47 / 20 10 10 10.
Short wave ridging aloft will bring some warming over the weekend, mainly over the mountains.
429 AM CDT Sat Oct 12 2019 Much cooler conditions are being felt this early morning as a cold front has pushed well through the area. Cool conditions will occur today as high pressure builds in keeping a northerly flow. The center of the high pressure system over northeast Texas and Oklahoma will move east over the next couple of days.
Cooler temperatures and a more active pattern are anticipated late in the upcoming week. Building high pressure will allow the airmass over the forecast area to warm through the weekend, allowing maxes to approach seasonal normals by Sunday. Strongest warming will be over the higher elevations, as limited mixing will slow the rise of temperatures in some valley locations.
High pressure will continue to build across the area today and tonight. Above the stable surface layer southerly flow will continue with MVFR expected across LFT/ARA through about mid morning today with all other sites VFR but with strato clouds generally greater than 4K expected as warm air overrides the cooler boundary. /issued 429 AM CDT Sat Oct 12 2019/ Much cooler conditions are being felt this early morning as a cold front has pushed well through the area. Cool conditions will occur today as high pressure builds in keeping a northerly flow. The center of the high pressure system over northeast Texas and Oklahoma will move east over the next couple of days.
Afternoon temperatures in the low to mid 80s along the coast, and slightly warmer temps inland with mid 80s, except some upper 80s possible in Lake County.
729 AM EDT Sat Oct 12 2019 A mixture of VFR and MVFR cigs through this taf cycle as a cold front an associated llv moisture intrude.
505 AM EDT Sat Oct 12 2019 Current surface analysis shows a cold front on the verge of exiting the state. This front has brought some rain showers to most of eastern Kentucky overnight, as well as some much cooler temperatures in western Kentucky. The exception will be the far east and southeast, where lows are likely to only cool to the lower 40s. However, highs will be a bit warmer than today, with temperatures in the upper 60s to lower 70s. A cold front continues to progress over central Kentucky and has begun to move into eastern Kentucky at TAF issuance. The cold front is expected to be well east of Kentucky by the afternoon, with showers and clouds on the decrease from west to east during this time.
/issued 412 AM EDT Sat Oct 12 2019/ The weak cold front that has caused our humid and wet weather over much of our work week has pushed away today. Behind it we will have high pressure and dry air settling in for the weekend.
500 AM MDT Sat Oct 12 2019 08z surface analysis had low over KRRT, which was under upper low vigorously spinning over northwest MN. Today/tonight, stacked low slowly shifts east as upper ridge over the northern Rockies shifts follows suit.
For the earliest dates for fall freezes, both OKC ad LAW had their 3rd earliest fall freeze, while SPS could have its 2nd earliest if they get to freezing this morning. As low level ridge shifts eastward and lee trough develops in response to increasing westerlies, gusty southwest winds expected to develop today.
1038 AM EDT Sat Oct 12 2019 Water vapor imagery highlights a large mean-layer ridge centered over Mexico. A weak upper- level low along the eastern flank of the ridge spills southwest into the Western Caribbean.
732 AM EDT Sat Oct 12 2019 A ridge of high pressure will remain over Central and Eastern Pennsylvania through tonight. A weakening cold front will sweep across the area Saturday afternoon.
As a result most areas are at or just a touch warmer than 24 hours ago. The four county Freeze Warning has some areas that are touching or close to touching the freezing mark, but the south winds should limit the downside. Looking to the upcoming work week, the flow aloft across the CONUS is generally a zonal and progressive one with a series of short wave troughs moving through the flow.
For the first time in several days the wind will actually be rather light as the upper low continues to lift further away from us and into Canada with an upper ridge over the high plains.
Cold air advection has mostly ended behind yesterday's cold frontal passage.
Meanwhile, temperatures are currently near or below freezing across the Valleys in Siskiyou County.
1236 PM CDT Sat Oct 12 2019 For 10/13/2019 18Z TAF Issuance Pressure gradient has been a bit slow to relax as high pressure builds into the region, thus winds have remained a bit elevated through the late morning. /issued 429 AM CDT Sat Oct 12 2019/ Much cooler conditions are being felt this early morning as a cold front has pushed well through the area. Cool conditions will occur today as high pressure builds in keeping a northerly flow. The center of the high pressure system over northeast Texas and Oklahoma will move east over the next couple of days.
150 PM MDT Sat Oct 12 2019 Dry northwest flow aloft will become more zonal Sunday, then southwesterly by Sunday night as a deamplifying upper level ridge moves across the region. Temperatures will also warm through the period, with highs Sunday several degrees warmer than today and close to normal for this time of year.
We will start out with an area of high pressure and zonal flow across the Ohio Valley.
231 PM MDT Sat Oct 12 2019 Anticipate another cold overnight across the Northern Rockies tonight, with patchy valley and river fog/freezing fog developing by Sunday morning.
122 PM MDT Sat Oct 12 2019 The low pressure system continues its slow trek towards the Great Lakes.
As high pressure builds across the region, skies will continue to lift and clear and northerly winds will decrease this afternoon and become calm to light and variable across most sites tonight. High temperatures this afternoon are expected to range in the upper 60s to low 70s north of I-10 and in the low 70s south of I-10.
A large cutoff trough over the northern plains will move eastward on Sunday with ridging building over Colorado.
The wind will be gusty above timberline and in the higher foothills, especially during the morning hours. High temperatures today will continue to increase, with highs in the lower 60s for Denver. Over Colorado, a weak ridge will track across the state Sunday. Warmer air will move into the area with temperatures warming into the 60s across northeast Colorado.
Upper high pressure will dominate the weather over the Northern Rockies tonight through Sunday with dry conditions.
Since the trowel (trough of warm air aloft) will remain over the region, but in a diminished role, there will be a chance for light snow through the night. As dryer air infiltrates the mid layers, there could be a brief period of freezing drizzle tonight. We added some lake effect flurries south of lake Sakakawea with the cold air moving across the warmer waters of teh lake. Otherwise highs Sunday over the snow covered areas will be in the lower 30s, to the mid 40s west.
I don't think any locations will get down into the lower 30's, however. Perhaps a few patches in the low-lying areas, but not enough for an advisory.
1227 PM CDT Sat Oct 12 2019 High pressure is now in firm control of the region but is beginning to move off the to the east.
241 PM CDT Sat Oct 12 2019 The deep upper level low over the Great Lakes region will move slowly east over the next 24 hours. After the Ozarks saw widespread temperatures at or below freezing for multiple hours last night along with a significant heavy frost, the growing season has effectively ended.
104 PM EDT Sat Oct 12 2019 Dry conditions are expected until a midweek cold front crosses the region. Cooler dry air will continue to invade the region through the afternoon in the wake of the morning cold front. Cloud cover will rapidly clear out this afternoon with building high pressure. Wetzel, Marion, Monongalia and Ridges of Eastern Monongalia and Northwestern Preston Counties were added to the Frost Advisory for tonight.
246 PM EDT Sat Oct 12 2019 Surface analysis this afternoon reveals the strong cold front that has brought us our chilly airmass is pushing past the Appalachian Mountains. Surface flow will pick up out of the south with high pressure to the east and afternoon highs will climb into the mid and upper 60s under clear skies. As the low pressure system moves east flow over the CWA will become more zonal before another stacked low pressure system slides south over the Great Lakes from Saskatchewan, Canada.
1102 AM MDT Sat Oct 12 2019 Mild autumn weather will return to southern Colorado today and tonight as upper level ridge over the wrn U.
Highs tomorrow will be mainly in the 80 to 85 range; that's slightly warmer than usual mid October highs. The upper trough to the west, based on this latest model run, may not persist into West Texas; some ensemble members fill this trough, over the southern Rockies.
Afternoon temps today will moderate into the 50s across the lower elevations.
On Sunday, weak warm air advection as an upper ridge builds into the Highs Plains.
Low pressure centered over northeast Minnesota will continue to edge east tonight. With temperatures right around the freezing mark and warm ground temperatures, the snow won't be around for long. Plan on lows tonight falling into the lower 30s, but with the winds, not expecting frost formation and with last nights lows falling to around the same values, will not issue any frost freeze headlines at this time. Low pressure continues to meander east into southern Ontario on Sunday with continued chances for rain and snow showers, mainly across western and central Wisconsin. Cool temperatures continue on Sunday with highs in the lower to mid 40s.
302 PM EDT Sat Oct 12 2019 Water vapor imagery highlights a large mean-layer ridge centered over Mexico. A weak upper- level low along the eastern flank of the ridge spills southwest into the Western Caribbean. 0 degC) sampled by this morning's KKEY RAOB above 475 mb are likely associated with this upper low. The mean-layer ridge over Mexico will control the weather through the next several days as it lumbers to the east into the Gulf of Mexico, then southeast to near Cuba. The low level ridge axis initially across northern Florida will sag southward in tandem with the upper ridge's trek towards the Western Caribbean.
436 PM EDT Sat Oct 12 2019 Dry conditions are expected until a midweek cold front crosses the region. A few isolated regions may fall below freezing, however sustained light winds may help diminish the chances for a sfc freeze to occur. Lingering high pressure over Eastern PA will continue to keep conditions dry and quiet.
It is a couple of degrees warmer on average. Otherwise quiet weather in the short term, with moderating temperatures as high pressure remains in control.
Even with return flow beginning the lack of isentropic lift and an expanding high pressure should keep South Central Texas dry for Sunday.
252 PM CDT Sat Oct 12 2019 Deep upper low is currently spinning over northeast MN. Upper low will finally start to push east on Sun into the northern Great Lakes region. For Mon, this will result in increased Lee troughing and return flow, allowing for highs to warm into the 70s region wide. The southern stream impulse is expected to bring widespread rainfall to the eastern TX into the Lower Mississippi Valley Tue. Meanwhile, the northern stream impulse will track over the northern Plains Mon night into Tue and will push another cold front through the area. Cold front will knock temps back into the 60s for both Tue and especially Wed.
349 PM CDT Sat Oct 12 2019 Deep upper cyclone continues to dominate the central portions of the CONUS with westerly flow this far south allowing for a quick return of modified dry air into the central Plains. Water vapor imagery shows one stronger wave rotating around the southwest side of the upper low which will help bring a modest boundary into the area late tonight into Sunday.
224 PM CDT Sat Oct 12 2019 An upper low/trough is centered over northern Minnesota with westerly flow over West Texas and southeast New Mexico. The center of the upper low/trough will move into Canada on Sunday as another upper trough moves over the west coast.
The high pressure will gradually weaken and will shift east tonight into Sunday. Temps have risen well above freezing now, and the freeze warning was expired earlier.
An anomalously deep upper level low pressure system was over northern Minnesota today. At the surface, a southward moving low pressure trough extended from northeast Nebraska into eastern Colorado while high pressure extended from the Ohio Valley into southern Texas. A surface pressure gradient in place between these two features and was bringing some gusty southwest winds to portions of southwest Kansas which was also helping boost temperatures up into the lower 70s.
the strong winds look to subside by around 00z but still have some breezy sustained winds for much of the night as the potent low pressure system continues to churn over the northern Great Lakes. Further south along the Highway 20 should remain all rain with the surface temps near 40 or warmer.
That said, not expecting too much change in the cloud decks or vertical thickness of the clouds per morning sounding, so other than a slight nudge up a degree from McAllen to Zapata (into the lower 70s), current forecast closer to the coast of upper 60s should hold.
Based on radar trends and stable cooler and drier air locked in across Deep S. Initial issue near the coast remains wind, where offshore trough continues a tighter gradient and brisk northwest flow. That said, not expecting too much change in the cloud decks or vertical thickness of the clouds per morning sounding, so other than a slight nudge up a degree from McAllen to Zapata (into the lower 70s), current forecast closer to the coast of upper 60s should hold.
233 PM CDT Sat Oct 12 2019 A powerful closed upper low continues to spin across northern Minnesota leaving our area in fast northwesterly flow aloft.
Temperatures across the eastern Ozarks and northeast MO have cooled into the lower 30s and we have some frost on the cars here in the WFO parking lot in Weldon Spring where the temp is in the mid 30s. Warmer than yesterday but still nearly 10 degrees below normal. A rather weak cold front will drop into the northeast MO and west central IL during the late afternoon with little fanfare.
331 PM CDT Sat Oct 12 2019 The upper low continues to rotate over Minnesota today. The stratus deck will linger across the area on Sunday, with scattered flurries/sprinkles remaining possible as long as the low clouds are around in the cyclonic flow regime. This would yield slightly cooler lows in the upper 20s there, with low 30s again in other areas.
Temperatures will be around 10 degrees warmer than today. Meanwhile, the cold front that came through our area yesterday is in the Gulf of Mexico right now, but it is expected to turn back to the north as a warm front on Sunday.
While a very potent winter storm moves through the upper midwest, here in central California we have very little to talk about weather-wise beginning with weak ridging over the region for the next day or so. By Sunday evening, a weak moisture starved trough will move eastward through the west coast. Impacts will be slight to non- existent as the main impacts will be slightly cooler temperatures and breezy conditions as the trough moves through.
1212 PM CDT Sat Oct 12 2019 Mostly clear skies and a very cool Canadian air mass have allowed for widespread freezing temperatures this morning. Precipitation- wise, the large upper-level low pressure currently located over northern MN will continue to impact the region. However, warm ground, diffuse sunlight, and temperatures above freezing should minimize the impact on roads. Huron to De Smet to Madison, SD will be an exception, as temperatures around these locales will largely stay below freezing, allowing for another inch or two of accumulation. Temperatures again drop slightly below freezing tonight into Sunday morning.
1117 AM MDT Sat Oct 12 2019 08z surface analysis had low over KRRT, which was under upper low vigorously spinning over northwest MN. Today/tonight, stacked low slowly shifts east as upper ridge over the northern Rockies shifts follows suit.
This will lead to more surface lee troughing on Sunday but with weaker winds.
As expected, this delayed the heating a little; so far temperatures across most of the area are still in the lower 60s.
200 PM MDT Sat Oct 12 2019 An upper level ridge of high pressure will reside over the region through Sunday.