Aikyam-Lab/Synoptic-Bench huggingface dataset:
08Z/3 am surface analysis shows a cold front moving southeast toward the Ohio river. North breezes were filtering in cooler and drier air early this morning. 00Z forecast models push cold front southeast across KY/TN during today while 1032 mb high pressure along the ND and Manitoba border settles to just nw of Lake Superior by sunset. This to bring dry and cooler air to central IL today with highs ranging from 50F at Galesburg to lower 60s along highway 50 in southeast IL. Chances of rain showers to diminish from sw to ne during Saturday afternoon as warm front lifts north of I-74 by 7 pm Saturday. The warm front will be close to northern CWA Sat night and could produce patchy fog and drizzle. Milder lows Sat night in lower 50s from Peoria north to the lower 60s in southeast IL.
310 PM EDT Fri Nov 3 2017 18z sfc analysis shows a low pressure wave moving through southeast Kentucky along a well defined boundary.
325 PM EDT Fri Nov 03 2017 A cold front will drop southward into North Carolina tonight, bringing clouds and cooler temperatures for Saturday.
The upper-level trough centered over Puget Sound this morning will begin to swing across the Northern Rockies tonight. This trough wil have a moisture train originating from the NW Coast while sending a frontal boundary through the local region tonight. There had been reports of light freezing rain in our southeast and further south and east of the forecast areas. Therefore updated the WSW for Prairie and Wibaux Counties for light freezing rain. The inverted trough shifts east after sunrise Satuday sending most of the snowfall to the northeast.
605 PM EDT Fri Nov 3 2017 A diffuse cold front will move into the area tonight and linger Saturday.
A weak cold front, which moved across West Central Texas last night, will have no impact on temperatures tonight and tomorrow, as winds from the south and southwest return quickly.
114 PM EDT Fri Nov 3 2017 Weak pressure ridging will be in the forecast area today. A diffuse cold front will move into the area tonight and linger Saturday.
As it moves in it will push the warmer air to our west into the state and along with the that deeper moisture as well. Temps will be tricky since we will be in warm advection we will see warmer temps but cloud cover will hamper highs some.
300 PM CDT Fri Nov 3 2017 Light snow continuing to slowly saturate the low levels with observations indicating -sn across NE ND and into the Red River valley this afternoon.
Mid level high pressure centered over central and southern Mexico is progged to shift closer to S TX tonight. GFS/ECMWF/NAM deterministic predict a quasi-zonal upper pattern over the CONUS at the beginning of the period, yet an upper trough is predicted to move/lift across SCNTRL/SERN Canada and contribute to the SWD penetration of a cold front into the SRN Plains, yet the front is then expected to stall.
Near normal temperatures through the weekend with slightly warmer temperatures to end the work-week.
427 PM MDT Fri Nov 3 2017 The southwest flow aloft over our region is expected to moisten beginning Saturday with that moisture from the eastern Pacific likely to start producing snow in earnest at some of the higher mountain elevations by Saturday evening with rain at lower elevations.
521 PM EDT Fri Nov 3 2017 A cold front will shift offshore this evening. High pressure will build in from the west overnight through Saturday. The high pressure will shift offshore Saturday night as a warm front approaches from the southwest.
Then another short wave trough will bring some more snow to this area during the latter part of the overnight and early Saturday morning. Meanwhile further south, a short wave trough will bring another round of precipitation to areas along and south of Interstate 94 from after midnight into early Saturday afternoon. On Saturday night, a cold front will move quickly southeast through the area.
326 PM CDT Fri Nov 3 2017 Snowfall amounts through this evening, and the threat for freezing drizzle in NE SD and western MN Saturday morning will be the main forecast concern. Buffer soundings are even suggesting patchy freezing drizzle developing late tonight into the early morning hours on Saturday in the winter weather adv area. If patchy freezing drizzle develops, than the winter weather adv will need to be extended. The pattern looks cooler than normal with a slight warmup by midweek. A cold front will push through Saturday night with cooler air overtaking the region through most of the week.
/COOPER/ As of 18Z, quasi-cold front stretches from NW AR through E central AR with some southern movement noted. Warm front lifts north overnight with winds becoming variable, then southwesterly. Rain chances wl diminish heading into Sat as the frontal bndry lifts back NWD and high pressure aloft starts to bld back into the Mid- South.
321 PM CDT Fri Nov 3 2017 Rest of Today through Tomorrow: Current surface analysis has high pressure to our east over Georgia at 1022 mb, a weak cold front to our north running through western Tennessee and Central Arkansas. Warm moist air is continuing to pump into our area from the south and bring temperatures slightly above normal, highs ranging in the lower 80s. High temperatures for tomorrow evening will once again be above average as an upper level ridge start to form from the west, scattered showers and a few isolated thunderstorms will develop late into the evening, mainly north of I-20 and west of I-55.
220 PM MST Fri Nov 3 2017 Weak high pressure will build across the Southwest with a slight warming trend this weekend.
126 PM EDT Fri Nov 3 2017 MVFR conditions currently across the terminals with scattered showers moving ahead of a cold front.
This seems reasonable as an inverted trough east of the Bahamas presses slowly westward, which will keep low level flow backed more to the north. Temperatures will remain above normal with lows in the mid-upper 60s and highs in the lower 80s along the coast and mid 80s inland.
All guidance returns the warm front and low clouds/drizzle/fog overnight, then transitions to a chance of showers as we warm sector for the weekend.
For Saturday, a building upper ridge over the Southern Plains will bring enough subsidence to keep temps well above seasonal. Highs in the low 80s expected.
A cold front has moved through the area and all associated showers/storms with the system have moved well off to the east of the area early this morning. Cloudy and a cooler day is in store for today as highs in the middle 50s to the lower 60s occur.
225 PM PDT Fri Nov 3 2017 A storm system moving through the region this weekend will bring cooler temperatures and some rain to our area, along with significant accumulations of snow in the higher elevations of the Sierra Nevada.
A cold front will move through Nevada on Saturday and will drop snow levels to the valley floors by Saturday night.
438 PM EDT Fri Nov 3 2017 A cold front with patchy drizzle and rain showers is crossing the region this afternoon.
A cold front is currently moving into the Plateau and stretches back to the southwest into Northern Mississippi. The cold front will continue to slowly move into northwestern portions of the area and will likely stall across the area later this evening. The front will begin to push northward as a warm front on Saturday as an upper level trough passes to the north across the Great Lakes. Expect scattered showers and storms will be possible again in the warm sector with highs warming into the low to mid 70s for most locations.
The lower stratus deck will continue to move into our region from the southwest with lowering cloud bases through the evening. New model guidance has been trending cooler for Saturday highs with more in the way of cloud cover. Even though this is cooler than our previous forecast it still is shaping up to be the nicest day of the week ahead.
High pressure over the great lakes will move on to the east and a warm front across Tennessee and Arkansas will move north across Indiana Saturday.
1112 AM PDT Fri Nov 3 2017 As the low moves east and out of the region, the snow and precip will taper off through today.
Meanwhile, the cold front was sitting from near Bowling Green KY to Clarksville TN to Memphis TN at 18Z.
This feature will continue to weaken overnight and will then lift northward as a warm front late.
215 PM CDT Fri Nov 3 2017 Its been a cool dreary day for most across the Ozarks as an inverted trough makes its way through the region. Visibilities have improved along the Arkansas state line where cloud cover has thinned ahead of the trough.
229 PM EDT Fri Nov 3 2017 A cold front will push through the area this evening. Latest surface analysis indicates a cold front was located along the Ohio River. In addition, cooler air will filter in with lows tonight in the 40s north to mid 50s across the far southern counties. The boundary will also move back north into the region as a warm front.
Warm front will lift north through much of the area on Saturday as low level moisture surges north.
335 PM CDT Fri Nov 3 2017 Mid-afternoon sfc analysis shows high pressure hanging over the sern CONUS, providing the area with a continued onshore low-level flow. Closer to home, as temps have continued to warm to the lower/mid 80s, a few showers have popped up as expected, with a little more widespread coverage farther north closer to the front. Not expecting any thunder given the capping noted earlier, but suppose a strike or two could be possible given with some cap weakening amid the warmer temps inland, thus will maintain the isolated thunder mention from earlier. otherwise the ridging to our west is progged to expand slightly ewd into the wrn 1/2 of the area which should preclude convective development.
the steady snow (some rain in the lowest valleys of west central Idaho) will transition to scattered snow showers.
314 PM EDT Fri Nov 3 2017 A cold front with patchy drizzle and rain showers is crossing the region this afternoon.
However, a stream of high clouds looks likely in moist southwest flow aloft and this may knock a few degrees off and have forecast most highs in the low 80s, which falls a bit short of records. The other thing the high clouds may do is to some extent limit vertical mixing and therefore keep wind speeds and gusts a bit in check.
246 PM EDT Fri Nov 3 2017 Dry conditions can be expected until a warm front returns shower chances later Saturday.
During the overnight into early Saturday, low cloud will likely form as a warm front lifts northward.
SHORT TERM (Now through Saturday Night): Mid-level ridging centered over northern Mexico and south Texas will provide subsidence across deep south Texas through the period. Overnight low temperatures will generally be in the upper 60s to the lower 70s area wide. High temperatures will generally range from the mid 80s near the coast to the low to mid 90s inland.
Lows tonight are expected to be in the upper 50s north to the lower 60s inland and mid to upper 60s near the coast. Highs Saturday will be in the lower to mid 80s.
153 PM EDT Fri Nov 3 2017 Area of high pressure will continue drifting through the region this afternoon and early tonight. The mean position of the upper trough axis resides over western Canada/Pacific NW with subtle upper ridging positioned over over portions of the CONUS east of the Mississippi.
The bigger adjustments have been across the Snake Plain and adjacent benches/valleys, and we still may be on the high side.
This was largely due to a cool low level easterly flow out of the Great Lakes at the base of high pressure over Manitoba. Extensive low cloud cover was looming not far to the our southwest across KS into southwest MO, where low pressure was taking shape at the surface. Saturday, the main area of light rain moves across the area with models more or less showing a wave of low pressure lifting through far southeast IA into northern IL by afternoon. For temperatures, have stayed on the low side of guidance with highs from the upper 40s north to upper 50s south.
300 PM EDT Fri Nov 3 2017 The meat of the mean layered ridge has shifted west over the past 24 hours resulting in falling heights at all levels. An inverted trough to our east and a short wave well to our northwest will mingle over our area Saturday and Saturday night. However, an upper low, a weak low level trough, and low level confluence warrant at least PoPs above guidance. Expect slight (10%) rain chances, highs in the lower 80s, and lows in the lower to mid 70s.
630 PM EDT Fri Nov 3 2017 A cold front will push through the area this evening. Cold front is almost through the area and as of 2230Z the front was almost to Beckley and it continues to drift southeastward. Latest surface analysis indicates a cold front was located along the Ohio River. In addition, cooler air will filter in with lows tonight in the 40s north to mid 50s across the far southern counties. The boundary will also move back north into the region as a warm front.
207 PM EDT Fri Nov 3 2017 Weak pressure ridging will be in the forecast area today. A diffuse cold front will move into the area tonight and linger Saturday.
Current obs are indicating the surface cold front has stalled just north of Middle Tennessee this morning. Have lowered today's high temperatures over much of the area to adjust for lingering cloud cover into this afternoon keeping temperatures cooler. The cold front flirting with the northwest portions of Middle Tennessee is creating variable wind directions around 3 to 5 knots that will continue into the overnight hours tonight.
615 PM EDT Fri Nov 03 2017 A cold front will drop southward into North Carolina tonight, bringing clouds and cooler temperatures for Saturday.
/issued 227 PM CDT Fri Nov 3 2017/ A weak cold front sagged into the northern Permian Basin this morning but southwest winds (although weak) have returned this afternoon.
240 PM MDT Fri Nov 3 2017 Upper level analysis shows some weak ridging over the northern plains, and a trough moving into the Pacific Northwest. Forecast soundings indicate the potential for some freezing drizzle periodically across far northwestern SD tonight. Freezing precip looks more likely farther north, and with little to no ice accumulation expected, will hold off on headlines for now. Fog will continue into Saturday morning, dissipating towards midday as a cold front pushes into the region and winds become northwesterly and a little breezy.
616 PM EDT Fri Nov 3 2017 Dry conditions can be expected until a warm front returns shower chances later Saturday.
Dry into Saturday afternoon then some showers should begin increasing mainly over the higher mtns by late in the day as increasing moisture rides up the west-facing slopes.
335 PM EDT Fri Nov 3 2017 A cold front will exit the area early this evening. High pressure will build in from the west tonight and crest over the region late Saturday.
227 PM CDT Fri Nov 3 2017 A weak cold front sagged into the northern Permian Basin this morning but southwest winds (although weak) have returned this afternoon.
This combined with the lack of moisture in the ice-producing mid-levels may result in some drizzle across our far east, though temperatures by late tonight are expected to be above freezing so should not see any icing. Wave exits to the east by daybreak Saturday, which should be the nicer day of the weekend in the wake of a warm front lifting through the area. Do not expect to see abundant sunshine, as the low clouds may linger across the northeast into the afternoon.
Abundant low level moisture will remain in place, however, which could continue scattered snow showers or flurries, or if the DGZ is dry enough, drizzle or freezing drizzle depending on the surface temperature. Warmer air should also work into southern/eastern MN and western WI late, keeping those areas in snow/drizzle. The biggest threat for freezing drizzle will be over west central and portions of central MN. Due to that, kept the Winter Weather Advisory going through the night, but if the freezing drizzle doesn't materialize it could be cancelled early. Clouds will persist all day Saturday in moist southeast flow ahead of the cold front Saturday night.
321 PM EDT Fri Nov 3 2017 A cold front will shift offshore this evening. High pressure will build in from the west overnight through Saturday. The high pressure will shift offshore Saturday night as a warm front approaches from the southwest.
Expecting the primary concern to be wet road surfaces freezing overnight across the southern FA where this seasons first round of winter weather impacts travelers overnight and Saturday morning. Light snow may become mixed towards morning as column warms and ice nuclei aloft diminishes with freezing drizzle or drizzle developing towards morning. Water vapor loop indicated a flat upper ridge over MT/WY. Ridge will move over the forecast area later this morning. An upper level trough over the Pacific Northwest will move into the Northern Plains on Sat. Cold front will sweep across the forecast area Sat afternoon and evening. Warm advection east of the upper trough and an upper level jet will produce another round of snow for the northern zones roughly north of Highway 2.
A warm front will then approach the area on Saturday with increasing clouds and rain showers.
137 PM EDT Fri Nov 3 2017 A cold front will continue to move east of the area today, while high pressure pushes across the Great Lakes. A warm front will lift northwards on Saturday.
However, persistent warm advection ascent and uptick in moisture transport on Saturday looks to support developing rain for many areas, though unlike this past system, a much warmer boundary layer should hopefully preclude any "surprise" snowfall farther south, while northern areas also see a transition to all liquid precip given a loss of cloud ice with time.
524 PM EDT Fri Nov 3 2017 The cold front that moved through the area early this morning will stall out to our south over Tennessee overnight before drifting back north into Kentucky on Saturday.
Webcams, surface/highway reports, and observers all indicate that a transition to light freezing rain has occurred in southwest ND. With drier air aloft and a low level saturated layer with weak omega/upward vertical motion, light freezing rain/drizzle will become the dominate weather regime southwest and south central tonight through Saturday morning. Model soundings are too slow with this change and thus have expanded the light freezing rain into south central ND now versus later. Will continue to monitor the light freezing rain trends into this evening.
A weak cold front has moved into the northern Permian Basin, but has become stationary and will lift north leaving light southwest winds at the TAF sites the next 24 hours. To the south, an upper ridge over Mexico will keep zonal flow aloft over the region into the extended, resulting in unseasonably warm temperatures thru the weekend.
/issued 324 AM CDT Fri Nov 3 2017/ SHORT TERM (Today through Saturday): Deep South Texas and the Rio Grande Valley will remain on the northern to northeastern periphery of 500 mb high pressure during the forecast period. Additionally, a persistent onshore flow and lack of cold fronts will aid in keeping daytime high and overnight low temperatures at well above normal levels.
Fog is expected to redevelop in the vicinity of the KS/CO border around midnight and then become more widespread across northwest Kansas and far southwest Nebraska overnight as the whole airmass pushes further east overnight ahead of the lee trough that moves east as a closed low center on Saturday. Near surface flow will become more southwesterly through the day, which will act to push the cooler airmass containing the low clouds and fog further east over the plains.
321 PM MDT Fri Nov 3 2017 Low clouds have mixed east to the KS border at mid-afternoon, although residual cool air along the lower Arkansas Valley has been a little more stubborn to mix out.
Widespread IFR to LIFR conditions will persist through at least this evening north of a shallow cold front which has stalled near a KROG-MlC-KDUA line. /Issued 353 AM CDT Fri Nov 3 2017/ Surface cold front curves from Hugo to McAlester and then northeast to Sallisaw/Fort Smith. Some mid to late afternoon clearing should occur from the south, and locations south of Interstate 40 could be in the 70s while areas near the Kansas border will remain in the low to mid 50s. The front will lift north as a warm front on Saturday, and clouds north of the front will affect high temps again. Still, it should be much warmer on Sat/Sun than today with highs in the 70s to lower 80s.
A weak cold front has stalled near our Interstate 20 corridor. /issued 417 AM CDT Fri Nov 3 2017/ (Today and Tonight) A cold front has moved south to near a San Angelo to Brownwood line.
250 PM CDT Fri Nov 3 2017 Large expanse of high pressure, centered just north of the Minnesota Arrowhead, has us in an easterly flow after yesterday's frontal passage. However, highest PoP's overall will be over northern Illinois, as the warm front sharpens up in that region. Have lingered some showers east of a Galesburg- Olney line past midday, but most areas will be dry and warmer tomorrow afternoon.
The upper ridge over the Rio Grande Valley will help keep a decent cap in place.
936 AM EDT Sun Aug 13 2017 Gradual drying today, behind last night's cold frontal passage, will result in increasing sunshine by this afternoon. Monday, as aforementioned high pressure moves to the east coast, a southerly low-level flow will bring an expanding cumulus field into at least our Finger Lakes zones of CNY.
/issued 332 AM EDT Sun Aug 13 2017/ 07Z water vapor and H4 RAP analysis shows a weak upper level ridging pattern over the Gulf of Mexico and Florida peninsula. subtropical ridge axis lies over the far southern Florida peninsula and into the SE Gulf of Mexico. This position is providing a general light SW flow pattern in the lower levels across our region. The low level pattern will not change much through Monday as the subtropical ridge remains generally just to the south of of Fort Myers and provides a weak SW flow onshore to the Florida west coast. furthest removed from the ridge axis.
932 AM CDT Sun Aug 13 2017 Upper low continues to track slowly east across eastern North Dakota. The low moves into Minnesota this evening ending the rain east. Weak H5 ridging moves in for a mainly clear sky tonight, but with high low level moisture in place fog will likely result, especially across the south. As the weak H5 ridge passes Monday southwest flow aloft becomes established, and with increasingly diffluent flow, upward motion results.
Chattanooga Airport, TN 88 73 86 72 / 10 20 50 50 Knoxville McGhee Tyson Airport, TN 86 71 84 70 / 10 20 40 40 Oak Ridge, TN 86 70 84 71 / 10 20 40 40 Tri Cities Airport, TN 86 67 83 67 / 20 20 40 40.
1156 AM EDT Sun Aug 13 2017 High pressure builds in today and shifts offshore on Monday. Weak low pressure passes to the south Monday night.
1240 PM EDT Sun Aug 13 2017 A cold front will stall across the southern counties of central NC today, and remain quasi-stationary through the middle of the week. Sfc cold front has progressed swd into the Sandhills and southern coastal plain of central NC, a little farther south than anticipated 24 hours ago.
Upper air analysis indicates a deep layer ridge is settled across the Gulf coast region which is reflected in the wind profile which is below 15 knots from the surface to 200 mb (highest 260/14 knots at 885 mb/3900 feet). An impulse moving over the top of a mid/upper ridge extending from the central Gulf coast into Texas was producing convection across the Red River Valley region early this morning. Some decrease in convection coverage is likely as the work week progresses as ridging aloft increases and becomes centered for a time over the central Gulf coast region.
High pressure will slowly slide southeast across the Great Lakes. The high will bring quiet weather to the area. An upper trough will move across the Northern Mississippi Valley with a 70 knot jet max ahead of the trough axis. A southeast lake breeze will bring slightly cooler temperatures near the lake.