Aikyam-Lab/Synoptic-Bench huggingface dataset:
242 PM EST Wed Nov 29 2017 A cold front will pass through the area later tonight into Thursday, bringing a chance for showers mainly Thursday morning. Clouds will increase with both features with added energy from cutoff low aiding in at least isolated to scattered shower development as the trough passes through in the 10Z to 16Z Thursday window. QPF amounts definitely appear to be trending towards the low side as moisture flux will be rather limited compared to trends of past days.
Strong southerly flow ahead of an approaching cold front over the southern James River Valley, and into eastern ND will continue through the morning and into the afternoon. Temperatures are expected to rise into the lower 50s with minimum RH values of 25 to 30 percent. A limiting factor will be the approaching cold front. Therefore, our strongest winds over these counties does not perfectly line up with the lowest humidities. Meanwhile a punch of strong westerly winds will follow a cold frontal passage across southwest North Dakota beginning mid morning. A cold front will push east across the state through the day bringing chances for rain along with strong westerly winds.
315 PM CST Wed Nov 29 2017 At 3 PM, the southerly winds were increasing ahead of Pacific cold front over the central Dakotas. The cold front will move through the area after midnight tonight. The tight surface pressure gradient ahead and in the wake of this front will keep the boundary layer well mixed; thus, temperatures will be much warmer tonight than what they were this morning. Low temperatures on Thursday morning range from the lower to mid-30s. With the air mass being of Pacific origin in the wake of this cold front, there will be little difference from the high temperatures today (mainly in the mid and upper 40s) for Thursday afternoon.
1006 AM PST Wed Nov 29 2017 Drier weather is expected to temporarily move into the Inland Northwest today and tonight as a ridge builds over the area. The ridge will give way to yet another front for Thursday and Thursday night.
1159 AM EST Wed Nov 29 2017 High pressure traveling across the Great Lakes will provide dry weather today. A cold front is forecast to cross the region on Thursday, bringing the likelihood for showers.
Southwest winds due to a weak lee trough can be expected until our next weak cold front arrives later this evening and overnight. Temperatures should drop into the low to mid 30s overnight behind the front then top out in the 50s Thursday afternoon.
1145 AM EST Wed Nov 29 2017 A cold front moves across the area today, followed by high pressure through Thursday.
A dry air mass and slightly cooler temperatures have settled in across the area in the wake of a weak cold front. In fact, highs may be a few degrees warmer than today, with highs pushing near the 70 degree mark in some locations.
1137 AM CST Wed Nov 29 2017 High pressure over the Grt Lks region will slowly move east while a weakening low pressure area in eastern OK moves northeast into southwest MO late this afternoon. Cold front will drop into the Ohio River Valley this morning, allowing a cooler airmass to settle into central Illinois. High temperatures will top out in the lower to middle 50s. A northern-stream wave will push a cold front into Illinois tonight, bringing clouds and perhaps a few light showers. to the lower 40s elsewhere.
303 PM CST Wed Nov 29 2017 18Z surface data has high pressure from the Great Lakes into the mid- Mississippi Valley while a weak storm system organizes in Arkansas.
For Thursday night, the forecast temperature-dew point spreads are better but some drier air may advect into the area with the ridge building in more so held off on the fog. Mild day on Thursday with the cooler temperatures once again over the Brush Country/Rio Grande Plains where clouds will be more prevalent.
Latest SFC analysis shows a cold front draped N/S across southeast Texas. /issued 258 AM CST Wed Nov 29 2017/ Wx map shows weak pressure gradient as the region lies between low pressure in the Plains and retreating high pressure over the Eastern U. An upper level disturbance over OK with the weak trough axis over E TX providing some lift to yield isolated to scattered streamer type showers over the TX/LA boarder and adjacent coastal waters this morning. A cool front will move through by Thursday afternoon, bringing back the drier and cooler more seasonal air to the region through the weekend.
High level clouds will stream through a mid/upper level ridge of high pressure over the Pacific Northwest today for mostly cloudy skies through this morning.
205 PM EST Wed Nov 29 2017 High pressure will weaken across the area today.
331 PM EST Wed Nov 29 2017 High pressure over the eastern Great Lakes this evening will move off the New England Coast by sunrise.
The next cold front will move through around 12Z Thursday morning with winds from the northeast around 10-15 kts. A cold front will move in from the north Thursday morning/near the end of the TAF cycle. /issued 300 AM CST Wed Nov 29 2017/ The next several days will be uneventful except for a few cold frontal passages. The first cold front will come after midnight tonight courtesy of an upper level trough moving across the Northern Plains into the Upper Midwest.
140 PM EST Wed Nov 29 2017 High pressure will prevail across the area through tonight. A weak cold front will approach Thursday and move into the area Thursday night.
311 PM EST Wed Nov 29 2017 High pressure will build in from the west tonight. The high will crest over the area early Thursday then shift east into the maritimes during the afternoon.
1209 PM EST Wed Nov 29 2017 Weak cold front passes today.
315 PM EST Wed Nov 29 2017 High pressure will weaken across the area today.
/ISSUED 947 AM CST Wed Nov 29 2017/ Minor updates to reconfigure the Dense Fog Advisory based on satellite trends, where fog has quickly lifted behind a cold front stretching from Edna to Crockett but persists ahead of the front. Have extended the Dense Fog Advisory through 11 AM for areas ahead of the front, with daytime heating and the continued progression of the cold front towards the coast expected to contribute to continued improvement in visibilities.
214 PM CST Wed Nov 29 2017 A weak cold front will move into the area Thur AM, but other than n- ne winds there will be little sensible change.
A compact upper low across southern Illinois will spread into the Ohio valley tonight, while a secondary trough axis across the northern Plains will cross the eastern Great Lakes later tonight. Warm advection on the northern end of the low to our south and ahead of the approaching northern stream trough will lead to an expansion and lowering of clouds later this evening and tonight. The atmosphere is pretty dry in the lower levels, especially across NW/NC Illinois. Significant mid level drying will occur behind the cold front late tonight such that precipitation chances and sky cover will decrease quickly Thursday morning. It may feel a tad cooler with a breezy northwest wind.
Although there may be breaks in the low clouds, the low level cyclonic flow over northeast Oklahoma will support low clouds through the day, and it may not be able to clear out until later in the period. The highest amount observed in eastern Oklahoma was near Miami/Jay, with the Jay mesonet site checking in with 1. Latest surface analysis shows low level circulation is just southeast of Tulsa, with cold front extending into southeast Oklahoma.
1248 PM EST Wed Nov 29 2017 A cold front will bring a few rain showers or flurries to Northern NY through early afternoon. High pressure will return tonight with clearing skies and cooler temperatures. High pressure quickly builds overhead this evening. Look for temperatures in the lower to mid-20s early Thursday morning. High pressure will slide off the east coast on Thursday. Another cyclone will move through Canada and drag a frontal system toward NY and PA Thursday afternoon, spreading rain showers across the region. Dynamic cooling aloft combined with colder overnight temperatures should yield light snowfall Thursday night, especially over the high terrain.
331 PM CST Wed Nov 29 2017 Closed low from earlier this morning across northeastern OK is slowly moving eastward and weakening this afternoon. A weak cold front currently across the Dakotas will move across the bi- state area late tonight and will try and serve as the focus for some isolated to widely scattered showers.
1055 AM CST Wed Nov 29 2017 A weakening upper low located over SW Missouri and NW Arkansas will move toward the Mid South this afternoon. /issued 252 AM CST Wed Nov 29 2017/ An upper level low pressure system currently located over Southeast Kansas and Northeast Oklahoma will move east today into the region as it weakens. The chances for light showers will spread to the entire Mid-South tonight into Thursday morning as a cold front moves into the area.
253 PM EST Wed Nov 29 2017 High pressure will visit for tonight and early Thursday. A cold front will cross the region on Thursday night, bringing scattered light showers.
1136 AM CST Wed Nov 29 2017 While temperatures are above normal for late November, they are cooler than 24 hours ago as the cold front has moved into southern parts of Missouri and Illinois. It is also dry over the area as showers are closer to the upper low located over central Oklahoma. This upper low will open up today and move east into the Tennessee Valley by early this evening. There will be limited ascent with the upper trough during the day, so expect it to be dry. Chances for showers will increase tonight as low level moisture convergence increases ahead of a cold front that will move southeast across the area tonight. Highs today will still be above normal over the region even behind the cold front and with clouds to start the day.
There is a transitional ridge Thursday but it is very weak so expect light winds and highs to remain in the low to mid 40s.
209 PM EST Wed Nov 29 2017 A cold front moves across the area today, followed by high pressure through Thursday.
107 PM EST Wed Nov 29 2017 High pressure will prevail across the area through tonight. A weak cold front will approach Thursday and move into the area Thursday night.
WV imagery and surface analysis shows a weak trough of low pressure stretched across the eastern Gulf, with mid-level moisture on the decrease across North and Central Florida. Temperatures in the Keys are in the mid to upper 70s, and dew points are in the low 70s. High temperatures will peak near 80 degrees, and overnight lows will drop to the lower 70s.
Outside the area of low clouds/fog temperatures are on track, have made adjustments to temperatures in area of clouds/fog lowering temperatures more in line with cooler MET while keeping warmer MAV outside the area. Models are also showing a secondary wave along with a cold front approaching GA on Thursday. 41 First portion of fcst period will have the influence of a rather elongated cold front and associated weak mid/upper disturbance pushing eastward across the area.
/issued 1055 AM CST Wed Nov 29 2017/ A weakening upper low located over SW Missouri and NW Arkansas will move toward the Mid South this afternoon. /issued 252 AM CST Wed Nov 29 2017/ An upper level low pressure system currently located over Southeast Kansas and Northeast Oklahoma will move east today into the region as it weakens. The chances for light showers will spread to the entire Mid-South tonight into Thursday morning as a cold front moves into the area.
Around 06Z Thursday, a cold front will make its way across the TAF sites from north to south with winds shifting from westerly to northerly.
Patchy freezing fog will be possible later tonight into Thursday morning mainly along river valleys.
1156 AM CST Wed Nov 29 2017 244 AM CST Cooler and drier air continues to move in across the region post fropa, and with CAA remaining in place over much of the region. As deeper trough moves through the Great Lakes region tonight, lead energy will lift across the region.
1128 AM EST Wed Nov 29 2017 Weak cold front passes today.
432 PM EST Wed Nov 29 2017 High pressure will prevail across the area through tonight. A weak cold front will approach Thursday and move into the area Thursday night.
A cold front draped across the northern Ranchlands of Deep South Texas will sag farther south today and tonight before dissipating Thursday. A few isolated showers will be possible as a cold front moves through today, however, these will be spotty at best and very brief. /issued 433 AM CST Wed Nov 29 2017/ SHORT TERM (Today through Thursday): This morning the RGV is positioned between a modest upper level low traversing eastward along the I40 corridor and an upper level ridge centered across central Mexico. Temperatures will be a degree or two cooler this afternoon, however, not much of an air mass change.
242 PM EST Wed Nov 29 2017 A cold front moves across the area today, followed by high pressure through Thursday.
12Z model guidance appears to be struggling with the speed of this drier air (dew points in the lower to mid 60s observed in the Houston metro as of 3 PM CST compared to MOS guidance forecasting dew points in the lower to mid 50s at this time). The greatest potential for this appears to be south and east of the Highway 59 corridor and have concerns that additional moisture contributions from transpiration in rural areas may result in patches of dense fog development.
259 PM CST Wed Nov 29 2017 A cold front from eastern North Dakota southwestward across central South Dakota and the Nebraska Panhandle will continue heading east this evening. Temperatures will cool this evening and fire weather conditions will thus improve, although gusty winds should continue ahead of and behind the cold front tonight.
228 PM CST Wed Nov 29 2017 A low pressure area in northwest AR is still forecast to weaken as it moves northeast into southern MO this evening. As a Pacific high pressure area builds in behind the front, winds will become northwesterly and clouds will clear out. Given the origin of the high pressure area and lots of sunshine, mild temps in the 50s are expected tomorrow. This high pressure will dominate the weather, along with a very zonal flow pattern, for the rest of the week and into the weekend.
147 PM MST Wed Nov 29 2017 A strong upper wave is pushing through the northern plains, and its associated cold front is crossing the CWA this afternoon. With pressure rises of 3-5 mb/3hr behind the cold front, northwest winds are strong across northwestern SD and northeastern WY. As cooler air pushes into the area, lows will dip into the teens and 20s. For the rest of the week and into the weekend, weak upper ridging to zonal flow will keep weather dry and mild.
340 PM EST Wed Nov 29 2017 High pressure will visit for tonight and early Thursday. A cold front will cross the region on Thursday night, bringing scattered light showers.
243 PM CST Wed Nov 29 2017 The compact upper wave Ozark Plateau will rapidly translate eastward this evening into the lower Appalachians. The lower atmosphere remains too moisture starved to support precipitation this evening. Shallower isentropic ascent will increase in advance of the lower level trof axis late tonight, supporting lower cloud development within the warm conveyor belt. The trough may pass through far northwest AL before much in the way of precipitation can occur there, so our highest PoP (chance to likely) will be across the southeast 2/3 of our forecast area on Thursday. The Pacific cold front will follow quickly behind the during the afternoon into the evening, ending the precipitation from northwest-southeast.
349 PM EST Wed Nov 29 2017 A cold front will bring cooler weather and showers to the region Thursday night.
336 PM CST Wed Nov 29 2017 Low pressure over southern Manitoba with and associated cold front will push through eastern ND this afternoon. Moisture associated with the upper trough is falling as a mix of rain and snow along the northern tier counties from Williston to Minot and Bottineau. Cooler on Thursday, but abundant sunshine and much lighter winds.
1145 AM CST Wed Nov 29 2017 Low pressure is in western Arkansas bringing a cold front into the state. However, with an initially closed upper low pushing the surface features, there will be enough ascent for scattered showers in much of the area. Instability, on the whole, is lacking as well, but with the presence of the upper low, a few rumbles of thunder should be expected over northern Arkansas. The front will push out of the area tonight, with high pressure following. Temperatures will be a little cooler, but with quasi- zonal upper flow, don't expect a significant cool down just yet.
Cold front currently stretching from western Oklahoma southward along the Lousiana/Texas border and into the western Gulf of Mexico should push into the local area late tonight and progress through the area tomorrow morning, resulting in scattered showers. The mid/upper trough associated with this front will be flattening out and moving away from the area quickly tomorrow, so there won't be much of a push behind it. High pressure will then control the area's weather through at least the first part of the weekend.
Winds Increasing Next Few Hours in the High Country. A strong zonal flow aloft continues to buffet the higher peaks and ridge lines up around timberline at this hour. Could see west-southwest wind gusts up around timberline increasing another 10-20kts prior to passage of the trough axis. Later this afternoon, passage of the upper trough will strengthen westerly winds across southerly Wyoming which will in turn produce northeasterly winds acrs nern Colorado in the 10-20 kt range. High pressure aloft and a dry airmass will prevail today. A weak surface lee trough will be in place this morning, causing gentle southwest winds and bringing warmer temperatures back to the I-25 corridor.
301 PM EST Wed Nov 29 2017 Weak front is now quasi-stationary across central Kentucky, as the high center is already scooting farther east and winds have shifted to the ESE ahead of the next system moving into the mid-Mississippi Valley. Scattered to numerous showers will be characterized by high-end chance or low-end likely POPs and low QPF, and temps will only be a few degrees cooler than today with increased cloud cover but not much change in air mass.
113 PM EST Wed Nov 29 2017 High pressure will weaken across the area today.
317 PM EST Wed Nov 29 2017 A cold front will bring a few rain showers or flurries to Northern NY through early afternoon. High pressure will return tonight with clearing skies and cooler temperatures. High pressure quickly builds overhead this evening. Look for temperatures in the lower to mid-20s early Thursday morning.
340 PM EST Wed Nov 29 2017 High pressure builds over the forecast area for tonight, bringing clearing skies, lighter winds and rather cold temperatures.
310 PM CST Wed Nov 29 2017 Quiet weather to continue through the first half of the forecast as zonal flow aloft and a few weak cold fronts at the surface will keep temperatures in check until this weekend. Although wind speeds will not be as strong as with the last front, the airmass behind the front is a bit cooler so highs will be held about 4-6 degrees below today's readings.
High pressure near the mid Atlantic will keep low level ENE/NE flow across the area. Highs will remain warm for the last day of November in the lower 80s interior to upper 70s along the beaches. High pressure building toward the eastern U.
1031 AM CST Wed Nov 29 2017 High pressure over the Grt Lks region will slowly move east while a weakening low pressure area in eastern OK moves northeast into southwest MO late this afternoon. Cold front will drop into the Ohio River Valley this morning, allowing a cooler airmass to settle into central Illinois. High temperatures will top out in the lower to middle 50s. A northern-stream wave will push a cold front into Illinois tonight, bringing clouds and perhaps a few light showers. to the lower 40s elsewhere.
306 PM CST Wed Nov 29 2017 18Z surface data has high pressure from the Great Lakes into the mid- Mississippi Valley while a weak storm system organizes in Arkansas.
315 PM EST Wed Nov 29 2017 High pressure centered well to the north has brought a northeasterly wind to the region. Models indicate a flat 500mb ridge centered over Mexico, which persists through the end of the week, before sliding eastward, but has trouble keeping its northward influence. Thus, the ridge does not quite build over the Florida peninsula. High pressure will keep the northeasterly flow across the region.
325 PM EST Wed Nov 29 2017 Breezy northwest winds will continue this evening following a departing cold front. Northwest winds 15-25 mph with gusts up to 35 mph will weaken after sunset and become light and more terrain driven as surface and upper level ridges build overhead. Surface and upper level trough will be on our doorstep by about 00z Fri. 4" in the higher elevations of the Greens.
314 PM CST Wed Nov 29 2017 A zonal longwave ridge axis translates eastward across the western CONUS tonight and tomorrow as a compact H500 vort max races eastward up the Ohio River Valley with an attendant 90 kt jet streak. The low to mid clouds associated with this cyclone will likewise decay as the afternoon and evening progress onwards as depicted by RAP/NAM forecast soundings. Highs on Thursday will be similar to today, albeit possibly a degree or two lower given the weak CAA ahead of the ridge axis.
With this being another favorable low level wind direction for optimized mixing, have favored warmer/drier/windier models for late morning and afternoon. Upper trough and associated cool front which swing through the region tonight will not produce any precipitation, but will leave behind temperatures that are a bit closer to late November normals for Thursday.
Morning cloud cover and some valley fog is observed over most of the forecast area, due to lingering moisture from the cold front that moved through yesterday. Some high clouds will likely help keep the low clouds in for a while this morning.
Light winds will back to the south today but a weak cold front mid morning Thursday will shift winds to the north once again. The high will quickly move east today and another cold front arrives in the CWA tomorrow though zonal flow will not be favorable for strong cold air advection, in fact temps are expected to continue to slowly climb tomorrow into the weekend despite this fropa.
342 PM EST Wed Nov 29 2017 Center of coherent midlevel anticyclone will pass over the Detroit Metro area between 21-00Z this evening. Low impact light rain event set to occur over southeastern Michigan Thursday morning as the next trough in what has become a steady wave train tracks directly through the Great Lakes.
1130 AM CST Wed Nov 29 2017 Cold front has pushed south of the TAF sites with MVFR ceilings left at the San Antonio sites. A weak cold front is moving across the area overnight and expected to exit South Central Texas between 5 and 6 am this morning. In addition, patchy to isolated areas of dense fog are occurring ahead of the cold front east of Interstate 35 and expected to continue through 8 am this morning. Partly cloudy to mostly sunny skies are forecast for this afternoon in the wake of the front with highs in the lower to mid 70s most areas (upper 60s Hill Country).
1148 AM EST Wed Nov 29 2017 Dry and warmer than average weather will continue until the passage of a cold front on Thursday night. The moisture starved cold front will exit the region early this morning. With the lack of deep moisture and substantial upper level support, the only thing expected with its crossing is an area of mid clouds and eventually cooler temperatures. Cloud cover associated with the boundary will exit the south by late this morning and cooler air will fill in behind the exiting clouds. Temperatures today will be around 10 to 15 degrees cooler then yesterday, but still above seasonal averages. Latest model data is moving the trough and corresponding surface cold front eastward a bit faster, with showers reaching my Ohio counties Thursday afternoon.
327 PM EST Wed Nov 29 2017 High pressure will build in tonight and crest over the region Thursday morning.