Aikyam-Lab/Synoptic-Bench huggingface dataset:
114 PM EST Thu Dec 8 2016 A cold front will move east of the Midlands this afternoon.
455 PM EST Thu Dec 8 2016 A upper level trough over the Great Lakes will pivot eastward across the region over the next couple of days.
222 PM CST Thu Dec 8 2016 The remainder of the snow is moving east of the area with freezing temperatures across most of the CWA except south of the Davis Mountains, portions of the Lower Trans Pecos, and along the Rio Grande.
315 PM EST Thu Dec 8 2016 Surface analysis reveals the strong Canadian high pressure remains parked across the central portion of the country and we remain in the middle across eastern KY. Cold air will be maximized early Friday as 850mb temps will be between -10 to -12C, and this will lead to one of the coldest afternoons of the season with most not making it above the freezing level. That said was not willing to go much lower than the lowest COOP MOS number which came in at 14 degrees. availiable shortly Much of the lower deck from this morning has scattered out and now we are left with mostly high clouds across eastern KY.
1125 AM CST Thu Dec 8 2016 Clouds along with some light snow and flurries at times is expected again today into tonight as the upper low continues to pull away but cyclonic flow aloft persists. The warmest highs today will be north of I-94 where thermal profiles are just a bit warmer. After quiet weather under the influence of high pressure on Friday, the upper air pattern becomes zonal to start the weekend.
save for GLS, where its prox- imity to the warmer waters will help keep a tighter pressure grad- ient. As always determining freezing temperatures in SE Texas is a challenge and this is no different. Third, wet grounds from recent rains could keep the near surface air warmer than if it were dry. Finally cold air advection will be strong as 850mb freezing line should reach KCLL to KLFK Friday morning. High confidence that areas from Brenham/Conroe/Cleveland will drop below freezing.
303 PM EST Thu Dec 8 2016 Temps in the low to mid 30s at this hour will drop off rapidly early this evening, especially with dew points in the low to mid teens. Elsewhere, plenty of sunshine could help temps rise to near freezing.
1102 AM EST Thu Dec 8 2016 A upper level trough over the Great Lakes will pivot eastward across the region over the next couple of days.
1134 AM CST Thu Dec 8 2016 Water vapor imagery early this morning is showing that a confluent upper trough is moving across the area. The RAP is showing that the trough axis will move quickly off to the east this morning. The forecast will remain dry today and tonight as subsidence sets in behind the trough axis. Expect skies to remain mainly clear over the area as the RAP is showing the low level flow gradually straightening out, and then becoming slightly anticyclonic by this evening as high pressure moves in. With strong cold air advection today, will go slightly cooler than MOS highs and stay closer to SREF mean temps in most areas. Britt The ridge axis will be over the eastern Plains on Friday morning.
251 PM CST Thu Dec 8 2016 Latest visible satellite imagery indicates that clouds are finally starting to erode across the TN Valley, as high pressure slowly builds across the region. This will combine with our light winds to create very cold wind chill values, with locations in the higher elevations experience single digits. This is also expected to be a long duration freeze event, as our temperatures will fall below freezing between 9 and 10 pm and will likely remain below freezing through much of Friday morning. Strong northerly flow will continue to advect colder air southward, and daytime highs will remain in the low to mid 30s, despite clear skies.
326 PM CST Thu Dec 8 2016 Another cold night is in store with temperatures dropping to near 10 degrees in the north and the lower 20s in the south with the coldest temperatures of the season thus far expected in many areas.
Medium Lingering mid level cyclonic flow/low level thermal trough likely to keep a good deal of clouds in place into tonight and perhaps at least some broken cloud cover into Friday. 925 temps of -11c to -13c are in place so expect more highs in the low/mid 20s seem reasonable and this is in line with the MOS numbers.
1147 AM EST Thu Dec 8 2016 A cold front will move east of the Midlands this afternoon.
234 PM EST Thu Dec 8 2016 An upper low is now moving eastward across the Great Lakes with several short wave troughs moving into the Ohio and Tennessee Valleys. With the Artic air, high pressure is building southward across the Central Plains and heading for the northern Gulf of Mexico.
1147 PM CDT THU JUL 21 2016 Hot and humid conditions continue across the area and are expected to continue through the weekend as an upper level ridge of high pressure remains centered over the central U.
628 PM CDT THU JUL 21 2016 High pressure will keep flying conditions VFR at all terminals during this period.
Continued focus for the short term forecast period remains the strong upper level high and very warm temperatures across the area.
Exception will be ridges where gusts to 40-60 mph are possible through Friday morning, and continued gusty winds 15-25 mph along the mid-slopes. Humidity recoveries likely to be quite poor for mid-slopes and ridges north of I-80 tonight with pronounced dry slot moving in. /Issued 332 PM PDT THU JUL 21 2016/ Low pressure moving across the Pacific Northwest will bring gusty winds this evening especially north of Interstate 80. These conditions are created by a low pressure system currently centered near the Pacific Northwest coast. This will lead to gusty ridgetop winds continuing tonight through Friday along with very dry conditions. Away from the ridges, winds should be lighter Friday afternoon due to a weaker thermal gradient, with more typical afternoon gusts up to 25 mph.
803 PM EDT THU JUL 21 2016 Aviation A weak cold front will move slowly south tonight triggering additional thunderstorms.
High temperatures will be in the 80s and 90s with some valley locations reaching the lower 100s. High temperatures will be in the 80s and 90s with some valley locations reaching the lower 100s.
Tonight thru Friday Night More of the same is on tap for the short term period, with the upper level ridge remaining entrenched over the area.
732 PM EDT THU JUL 21 2016 Slightly drier high pressure will briefly build in from the north tonight. Atlantic high pressure will rebuild over the weekend while an inland trough prevails. A mid/upper lvl ridge of high pressure will extend across the southeastern United States this weekend, supporting a dry northerly wind and considerably less shower/thunderstorm coverage.
Afternoon VFR CU may become a bit more expansive on Friday afternoon compared to previous day's as the upper ridge shifts towards the west. /ISSUED 317 PM CDT THU JUL 21 2016/ Water vapor imagery continues to show strong upper high centered over OK with fair weather cumulus over roughly the eastern half of the area. By tomorrow, upper high begins to shift westward. Guidance continues to show temps a couple of degrees warmer tomorrow than today.
An upper trough over the coastal waters will move into Western Washington tonight, bringing partly to mostly cloudy skies and some showers.
/Issued 337 PM CDT THU JUL 21 2016/ Hot and humid weather continues under expansive upper ridge.
Hot, dry, and (in eastern Oregon) windy weather today will cool 10 to 12 degrees Friday behind a dry cold front overnight and early Friday morning, a little later than previously forecast. The front is supported by an upper trough/low coming inland from the northwest coast.
621 PM CDT THU JUL 21 2016 High pressure aloft continues to remain the dominant weather feature across the lower 48 this morning. North of the high, low amplitude flow extended from the Pacific northwest into southern Canada and east toward New England and the Canadian Maritimes. West southwest of the low, a weak cool front extended along the Nebr/SD border into northeastern Wyoming. Temperatures north of the front were cooler today with readings in the lower 90s over western South Dakota. Upper level ridge of high pressure continues to slowly retrograde west across the southern plains. A subtropical plume of mid and upper level moisture continues to move northward through the desert southwest on the western periphery of the ridge.
926 PM CDT THU JUL 21 2016 Another warm and clear night across the area tonight as upper ridge continues to dominate the region.
/issued 334 PM CDT THU JUL 21 2016/ Main weather influence for the area continues to be an expansive 597 dam ridge at 500 hPa centered over the Central Plains. As the ridge meanders westward, impulses rotating around the eastern periphery of the ridge will result in a daily chance of showers and thunderstorms.
It appears that the area will remain near the eastern periphery of a sprawling upper ridge.
A broad ridge of high pressure controlling much of the country will remain in control into tonight but an upper low off the Pacific NW coast will nudge east and allow for the chance of showers late tonight. On Friday, the upper low moves east across the Pacific NW allowing for a strong diffluent SW flow to develop across the area. Friday Night, the upper trough moves into the area and allows the atmosphere to remain quite unstable.
NAM suggests there could be some redevelopment along a trough axis to the northeast early in the morning, while the other models were generally dry.
952 PM EDT THU JUL 21 2016 High pressure will build into the area through Friday.
Flow remains mainly from the east tonight and should continue through Friday as strong ridging builds across much of the southeast states and into the northern Gulf waters.
In the upper levels, a large ridge is over the central U. and a trough is just off the Atlantic Coast. in the lower levels.
940 PM CDT THU JUL 21 2016 Only change was to add more clouds in the low level warm advection south central early Friday morning. As the previous forecast crew did earlier, we increased dewpoints from the consensus guidance given the low dewpoint biases from the past several days. Plenty of lift with the aid of the nose of the low level jet punching into western North Dakota.
High pressure surface and aloft will remain anchored over the Florida peninsula tonight and Friday.
655 PM CDT THU JUL 21 2016 A weak cold front is located across northwest Wisconsin at mid afternoon, and continuing to sag slowly southeastward. As this weak front continues to progress southeastward, the low chances of additional thunderstorms will continue to drop, and the higher dewpoint air will also finally be temporarily shunted off to the south of the DLH CWA. Weak high pressure will then be in control tonight and Friday across the Northland.
Mostly clear conditions with light winds were common this evening across Eastern Oklahoma and Northwest Arkansas underneath the dominating ridge of high pressure. mostly clear skies and light winds continue with temps holding in the 70s to a few locations in the low 80s once again.
Once again, we expect muggy lows mostly in the lower 70s with a few patches of fog around daybreak. High pressure will prevail across the Mid-State surface and aloft, keeping precipitation limited to just isolated afternoon and evening thunderstorms.
Another day of valley highs in the low to mid 90s and Friday will bring similar conditions with near seasonal temperatures. Once the upper trough axis shifts east of the CWA on Friday the warm up begins as high pressure over the central U. Highs on Friday are expected to warm to around normal under upper ridging with more warming over the weekend as the airmass warms each day.
/issued 304 PM CDT THU JUL 21 2016/ A sprawling upper-level ridge remains anchored over the southern high plains, drifting slightly westward on Friday. We expect a very mild night again, with lows ranging in the upper 60s in the west to upper 70s in the low Rolling Plains. Forecast remains largely on track as the center of a broad ridge is still favored to retreat to around the Four Corners by Friday night while deamplifying through the weekend.
Increasing instability and moisture will be advected around this area of merging low pressure at the surface into areas of central and eastern Montana by the afternoon. MUCAPE values of 1000 to 1500 j/kg, deep layer shear of 30 to 50 kts, and a ridge of theta-e will lead to some strong to severe storms Friday afternoon and evening.
A warming trend will continue into the weekend with many inland areas a few to several degrees above normal while onshore flow keeps conditions cooler near the coast. Otherwise, upper level ridging is building in over the area. Above normal 500H for late July, but not quite as strong as medium range models had originally forecasted the ridge for this weekend.
1139 PM CDT THU JUL 21 2016 High pressure aloft continues to remain the dominant weather feature across the lower 48 this morning. North of the high, low amplitude flow extended from the Pacific northwest into southern Canada and east toward New England and the Canadian Maritimes. West southwest of the low, a weak cool front extended along the Nebr/SD border into northeastern Wyoming. Temperatures north of the front were cooler today with readings in the lower 90s over western South Dakota. Upper level ridge of high pressure continues to slowly retrograde west across the southern plains. A subtropical plume of mid and upper level moisture continues to move northward through the desert southwest on the western periphery of the ridge.
and in the lower Umpqua Basin. but some cumulus is starting to pop over the higher terrain of the Umpqua Divide and Cascades. The area is under moderate southwest flow aloft between an offshore long wave trough and a strong ridge centered over the southern Great Plains. A weak short wave ejecting from the trough will move onshore later today. This will push a weak cold front onshore and this will affect the area in two significant ways. it will induce some instability over the higher terrain around Crater Lake. The long wave trough will move onshore late tonight into Friday morning.
632 PM CDT THU JUL 21 2016 Hot and humid conditions continue across the area and are expected to continue through the weekend as an upper level ridge of high pressure remains centered over the central U.
928 PM EDT THU JUL 21 2016 High pressure along the east coast will drift south through Friday. This will allow a weak cold front to sag southward across the central Great Lakes Friday night.
948 PM EDT THU JUL 21 2016 Slightly drier high pressure will briefly build in from the north tonight. Atlantic high pressure will rebuild over the weekend while an inland trough prevails. A mid latitude trough will remain off the east coast as a vort lobe swings through our Georgia zones. Bermuda high pressure will extend across the forecast district, generating light wind fields. A mid/upper lvl ridge of high pressure will extend across the southeastern United States this weekend, supporting a dry northerly wind and considerably less shower/thunderstorm coverage.
Chattanooga Airport, TN 74 98 75 96 / 30 20 20 50 Knoxville McGhee Tyson Airport, TN 71 95 73 93 / 20 10 20 50 Oak Ridge, TN 71 96 73 93 / 20 10 10 50 Tri Cities Airport, TN 63 93 69 90 / 10 10 20 40.
1033 PM EDT THU JUL 21 2016 High pressure builds offshore through Friday.
945 PM EDT THU JUL 21 2016 Skies are partly to mostly cloudy with temperatures generally in the lower 80s along the island chain. Surface wise, a Western Atlantic ridge is aligned across North Florida and the gulf coast region, with a subtle trough in the extreme Southeast Gulf of Mexico. In wake of the low level undulation which passed through our area this afternoon, a decelerating flow combined with some drier air below 700 mb prompted pops to be reduced to low chance.
914 PM EDT Thu Jul 21 2016 High pressure has moved off the coast.
730 PM EDT THU JUL 21 2016 High pressure along the east coast will drift south through Friday. This will allow a weak cold front to sag southward across the central Great Lakes Friday night.
Patches of late night fog possible (as indicated by some of the High-Res models).
This will lead to spring conditions with temperatures warming into the 60s for the lower valleys the next several days. Temperatures will have a spring time feel the next few days with afternoon highs climbing into the 60s for the lower valleys with 50s around the Tahoe Basin and low 60s for some locations in Mono County.
1033 AM EST Wed Mar 8 2017 The departing cold front is now located along the Atlantic Seaboard with drier air across the Southern Appalachians. Cold air is advecting in behind the system but this is in competition with the ample supply of insolation and the higher March sun angle. Chattanooga Airport, TN 67 41 73 52 / 0 0 0 40 Knoxville McGhee Tyson Airport, TN 63 39 69 51 / 0 0 0 40 Oak Ridge, TN 63 39 71 51 / 0 0 0 40 Tri Cities Airport, TN 61 34 68 42 / 0 0 0 30.
644 AM EST Wed Mar 8 2017 Aviation The passage of secondary cold front today will bring unusually strong winds to the area, winds will gust to between 50 and 60 mph with the highest gusts inland from late morning into mid afternoon.
1038 AM EST Wed Mar 8 2017 Dry and windy conditions are expected today as strong high pressure moves in.
552 AM CST Wed Mar 8 2017 The deepening closed upper low is currently parked over northwest Ontario near Hudson Bay as of 815Z. Embedded pieces of energy will continue to rotate around the upper low and across the forecast are through the morning. Cold, dry high pressure will cover the forecast area for the rest of tonight and Thursday.
807 AM EST Wed Mar 8 2017 Dry and windy conditions are expected today as strong high pressure moves in.
825 AM MST Wed Mar 8 2017 Strong high pressure that will be parked over the region is expected to push temperatures to well-above normal values for the next several days, under mostly clear skies.
Winds from a southerly direction around the Atlc ridge will be around 10 knots with more of a SE component south of Sebastian Inlet and along the east coast by mid to late afternoon.
A surface cold front will edge into northern MO and central IL tonight, while the column will continue to remain too dry for pcpn to form and clouds should clear early in the evening for most areas. Rather, a decent temperature gradient is expected, with areas just to the north of the front dropping into the low-mid 30s and much of the remainder of our region south of the front bottoming out in the 40s, close to persistence. The highest QPF should be across central and southeast MO into southwest IL where low level warm air advection, theta-e advection, and moisture convergence will be maximized on the nose of a southwesterly low level jet.
623 AM EST Wed Mar 8 2017 A weak cold front will move through the area this morning.
1021 AM EST Wed Mar 8 2017 A weak cold front will move through the area this morning.
/issued 417 AM CST Wed Mar 8 2017/ Last of remaining clouds have drifted south of area, with good radiative cooling ongoing and overnight lows falling into the upper 30s and lower 40s along and north of I-20, a few degrees warmer for southern sections. A warm frontal boundary, bringing moisture confined to the lower lvls, to move north across area on Thursday.
A deep low pressure system pivots into eastern Canada and stalls over Hudson Bay through the near term, leaving the local area beneath mostly-zonal flow aloft. At the surface, an area of high pressure in the wake of this morning's cold front will usher in a (relatively) drier and cooler airmass as winds shift to northeasterly and then easterly Wednesday afternoon and evening.
The airmass is drying aloft behind the cold front this morning. /issued 339 AM CST Wed Mar 8 2017/ A cold front moved into the CWA yesterday and is now located along the coastal waters just south of Lafourche and Terrebonne Parishes.
620 AM EST Wed Mar 8 2017 [Through 12z Thursday] A weak cold front is currently moving into the area with rainfall rapidly diminishing. As a cold front moves through the area today, rain chances will gradually decrease from west to east as the strongest dynamics remain well to the north with low instability across the area. High temperatures today are expected to range from the lower 70s across the northwest to near 80 across the far southeast big bend.
per trapped moisture within the lowest 8-9 k foot layer/frontal inversion. Maximum temperature readings on this dry day will achieve slightly above normal values in the lower 70s. minimum temperatures in the lower 60s by sunrise Thursday.
415 AM CST Wed Mar 8 2017 Regional 88D imagery and sfc analyses show the cold front just about to exit the far sern marine zones with high pressure centered over srn AR building swd over the forecast area. Sfc obs indicate, as expected, much cooler temps/lower dewpoints than this time yesterday with temps mostly in the 50s and dewpoints mainly in the 40s. A quiet day looks on tap for today as high pressure continues building over the region while pushing ewd through the Mid-South. The combo of weak CAA early and lingering cloud cover throughout will keep temps only in the lower 70s for this afternoon. As the high moves farther ewd, a low-level onshore flow should re-develop by late afternoon, setting the stage for a much warmer night tonight with lows only in the upper 50s to lower 60s.
Cold front has stalled just north of the main TAF sites this morning, and will meander in the vicinity through the day. /issued 403 AM CST Wed Mar 8 2017/ SHORT TERM (Today through Thursday): The cold front is currently splitting the CWA in two, stretching from Falcon Lake to just south of Baffin Bay, and has slowed to a crawl. A piece of the cutoff H% trough southwest of Baja California will break off and get absorbed into the general west-east flow across the southern US Thursday morning.
528 AM EST Wed Mar 8 2017 Dry and windy today as strong high pressure moves in. Great setup today for strong winds, as a full March sun will warm the surface and cooler and very dry air moves in aloft. The sun will tamper the cooler air mixing down and temperatures will be a few degrees above normal.
534 AM MST Wed Mar 8 2017 Added the Laramie Valley zone to the High Wind Warning today. Cold front lays across southern South Dakota into northeastern Wyoming into western Montana this morning.
417 AM CST Wed Mar 8 2017 Last of remaining clouds have drifted south of area, with good radiative cooling ongoing and overnight lows falling into the upper 30s and lower 40s along and north of I-20, a few degrees warmer for southern sections. A warm frontal boundary, bringing moisture confined to the lower lvls, to move north across area on Thursday.
Expect the pressure difference between the high to the north and the frontal boundary to weaken causing a net decrease in wind speed into the afternoon. A deep low pressure system pivots into eastern Canada and stalls over Hudson Bay through the near term, leaving the local area beneath mostly-zonal flow aloft. At the surface, an area of high pressure in the wake of this morning's cold front will usher in a (relatively) drier and cooler airmass as winds shift to northeasterly and then easterly Wednesday afternoon and evening.
A period of dry weather is expected through the at least the weekend with near normal to slightly warmer than normal temperatures. Mid and high level clouds continue to stream over the region with a flat upper level ridge. Given the position of the ridge and jet stream the storm track will mainly be over the Pac NW.
A warming trend continues across central California this morning with temperatures generally between 3 and 7 degrees warmer compared to 24 hours ago.
but a persistent block over the western Pacific will anchor a long wave trough over the eastern Pacific. That leaves the Pacific Northwest vulnerable to short waves ejected from the trough. Occasionally the trough will migrate far enough offshore to allow ridging along the west coast. and the Medford CWA will see some drier stretches when the ridge is more dominant.
710 AM EST Wed Mar 8 2017 A cold front will move across the region this morning. A broad trough of low pressure will settle into the northeast tonight and will persist over the area on Thursday.