Aikyam-Lab/Synoptic-Bench huggingface dataset:
729 PM EDT MON AUG 15 2016 A low pressure system will move over the region this week, bringing much needed rain to the area. Water vapor imagery depicting upper trof axis over the southern plains with decent low level flow ahead of it providing increased moisture flux into the region. dragging trailing cold front across the area and lead to diminishing chances for precip.
Lows will be in the low 70s. Will maintain only 30 POPs for Tuesday with the western side of an elongated Bermuda Ridge over the forecast area.
952 PM CDT MON AUG 15 2016 Upper low currently over the central Great Plains will move eastward across the forecast area overnight. Low temperatures tonight will once again fall into the lower to middle 60s.
The main driver behind the convection is a piece of upper level energy pushing north along the edge of an upper level ridge axis. The overall pattern in the short term has not changed much over the past few days with a frontal boundary off to the northwest and a ridge over the western Atlantic Ocean. Temperatures will also be status quo with mild morning lows, in the low 70s, and afternoon highs near 90 degrees.
Low temperatures overnight could dip into the low to mid 60s. Given the unsettled pattern, temperatures will remain cooler than we have seen over the last several weeks with the majority of the CWA seeing highs staying in the 80s into the weekend. Towards the end of the week, a northern stream trough and associated surface front will bring another shot of reinforcing cool air to the plains.
1255 AM EDT Tue Aug 16 2016 High pressure centered over the western Atlantic will remain nearly stationary through Tuesday. This front will eventually get kicked farther south and east by an upper level trough of low pressure which will move across the northern tier states later in the week. After midnight the models are keeping most of the area dry with partly cloudy skies mainly of the high cloud variety.
Shower and thunderstorm activity will favor the higher terrain. Isolated to scattered afternoon/early evening thunderstorms will develop again over the higher terrain of northern Arizona.
531 PM MDT MON AUG 15 2016 The area of high pressure that was situated over the forecast area this weekend will continue to weaken this afternoon as a mid-level trough approaches from the west. This will allow for isolated to scattered showers and thunderstorms beginning tomorrow afternoon once daytime heating kicks in, generally over the higher valleys and mountain areas.
954 PM CDT Mon Aug 15 2016 A coastal trough has developed right near the coast.
/Issued 249 PM EDT MON AUG 15 2016/ The weather pattern over GA remains under the influence of a southerly flow aloft due to an upper trough just west of the MS river valley and an upper high centered over Bermuda. SBCAPE will remain in the 1500-2000 J/kg with max temps a few degrees above normal in the low to mid 90s.
Meanwhile, flow aloft is northwest and weak with embedded minor troughs.
At this point, we are going to focus in on areas generally near and west of the Highway 65 corridor and will keep an eye on satellite trends this evening and overnight. As the trough continues to track east this evening and tonight, the showers will continue to spread northeast across the area. A drier air mass will spread into the area as the trough moves through the region and will end the rain from west to east this evening into Tuesday morning.
Southerly flow in advance of the approaching trough and associated cold front should support the development of thunderstorms out ahead of the boundary on Tuesday but the best lift will reside with the trough as it lifts into NY/NE. Regardless, modest instability and 30kts of shear will once again bring the threat for strong to severe storms, especially in close proximity to the boundary and upper trough passage. Weak high pressure will begin to build at the surface as the front slowly shift south and east.
1130 PM CDT MON AUG 15 2016 For this evening, we will have to carefully watch a weakening short wave trough moving through the region. On Tuesday morning, the area will be located under short wave ridging on the western side of the low pressure area moving through the lower Great Lakes and another trough moving out of the Northern Plains. This ridge will keep much of the area dry during this time period. On Tuesday afternoon, the short wave trough over Minnesota and western Iowa will approach the region.
1252 AM EDT TUE AUG 16 2016 Weak high pressure will build over the area overnight and Tuesday.
The lower resolution models -even the NAM12- are doing very poorly with this, even to the extent of having washed out this feature and dried up the QPF hours ago. The higher resolution models and CAMs are doing better, and have used them almost exclusively for the forecast for tonight and early Tuesday.
741 PM EDT MON AUG 15 2016 A warm front will bring the likelihood of showers and thunderstorms, from later tonight into early Tuesday. A trailing cold front will follow, later Tuesday into the evening, with additional showers and storms.
1006 PM EDT MON AUG 15 2016 An area of low pressure will move northeast from the Mississippi Valley to the Great Lakes region through tonight. Attendant warm front will lift northward through area before a slow-moving cold front moves through region Tuesday/Tuesday night.
Will update shortly for the expiration of the high risk of rip currents along the coast. Increased lift from a weak mid to upper trof shifting west across the central gulf states and adjacent gulf waters today. This pattern looks to continue through tue afternoon though maybe with a little less coverage during the day on tue due to less forcing into the mid levels as the trof axis continues to shift west. Due to plenty of rain over much of the lower half of the forecast area last week some areas to the south could still experience some minor or nuisance flooding this afternoon and possibly early this evening.
634 PM CDT MON AUG 15 2016 Upper low currently over the central Great Plains will move eastward across the forecast area overnight. Low temperatures tonight will once again fall into the lower to middle 60s.
1124 PM EDT MON AUG 15 2016 Humidity will increase overnight and Tuesday as a warm front lifts gradually north through the region. The highest risk for scattered severe storms and localized flooding is on Tuesday and Tuesday Night as a weak cold front will move down from the north. This may generate another round of showers/storms later tonight moving sw-ne along with or over the warm front. The warm front should be up to the northern part of the CWA by morning - but may be dragging along in the eastern section. Temps will get back into the lower 90s in some of the southern valleys. Cold front doesn't push in until after the day.
A weak coastal trough will continue to produce a few showers mainly across the coastal waters. Strong subtropical ridge centered just east of North Carolina will build into the region, and drier air will push into coastal southeast Georgia during the day Tuesday. Highs Tuesday will be in the lower to mid 90s. High pressure will be Northeast of the region through mid week, then to the East. This high will be Southeast of the area over the weekend.
Most of the precipitation is moving northward into northern Indiana ahead of a low pressure system, but should only see cirrus from this system invade the area. Low pressure will move northeast from Illinois to southern lower Michigan.
as high pressure brings mainly clear skies and light winds.
9 pm temperatures across interior NorCal are generally measuring 2-8 degrees cooler than 24 hours ago thanks to cooler air aloft plus an enhanced marine layer with onshore flow.
819 PM EDT MON AUG 15 2016 Humidity will increase tonight and Tuesday as a warm front lifts gradually north through the region. The highest risk for scattered severe storms and localized flooding is on Tuesday and Tuesday Night as a weak cold front will move down from the north. This may generate another round of showers/storms later tonight moving sw-ne along with or over the warm front. The warm front should be up to the northern part of the CWA by morning - but may be dragging along in the eastern section. Temps will get back into the lower 90s in some of the southern valleys. Cold front doesn't push in until after the day.
923 AM EST Wed Nov 16 2016 Mid level trough axis pushing southeast of EC FL this morning which has pushed frontal boundary south across Bahamas/Cuba. and showers/ storms over the Atlantic ahead of the trough have shifted southeast of the EC FL coastal waters. Drier air mass overspreading the region this morning as high pressure builds in. High pressure over the deep south will build over the Atlantic coastal waters while low pressure develops east of the Bahamas.
/issued 431 AM EST Wed Nov 16 2016/ Today-Tonight: Upstream soundings in TBW and XMR last evening show a very dry airmass behind cold front, and already dewpoints in the low 50s are filtering into South Florida. Sunny and dry conditions are expected for today and tonight, with perhaps some clouds as a secondary upper level trough moves through late tonight.
Meanwhile, upper level trough located near the west coast will deepen during the day and move eastward with the trough axis stretching from Montana through Utah by 12Z Thursday. In advance of this trough, Wednesday will be dry with high temps in the 50s.
1033 AM EST Wed Nov 16 2016 A few showers will accompany a weak cold front across the region today. Warmer weather will quickly return though ahead of a weekend cold front. However, building high pressure will help clear the sky overnight while rising heights and warm advection will maintain lows near average levels. A ridge over the Eastern CONUS is expected to amplify as a deep trough digs across the West.
1051 AM EST Wed Nov 16 2016 High pressure for the remainder of the week.
930 AM EST Wed Nov 16 2016 We have an upper ridge building across the region with high pressure centered over western Georgia at the surface. The lower level northerly flow will tend to advect some of the smoke from the north Georgia and Carolina fires in the direction of southeast Georgia and the Jacksonville metro area; however, should be well enough dispersed to not cause any significant visibility issues today.
927 AM EST Wed Nov 16 2016 A cold front has pushed south of the Florida peninsula as high pressure will continue to build across west central and southwest Florida in the wake of the front through Thursday.
402 AM CST Wed Nov 16 2016 Abundant sunshine and well above normal temperatures will persist today as an upper ridge moves into the region. As the ridge continues east, an upper trough will dig towards the Four Corners Region. Strong low level southerly flow will return in response to surface cyclogenesis over the High Plains.
944 AM EST Wed Nov 16 2016 Current obs are cooler than foreast, however with the dry air mass in place, temperatures will be rising quickly through the morning, and the latest guidance has highs a bit above the current forecast.
601 AM EST Wed Nov 16 2016 High pressure will build into the area today, as a large mid- level ridge builds into the eastern half of the country through the end of the week.
A cold front will move across the area today bringing rain and snow showers along with much colder temperatures.
414 AM CST Wed Nov 16 2016 Upper level ridging is over the central part of the country with westerly flow over West Texas and southeast New Mexico. An upper trough currently over the west coast will begin to move over the Central Plains on Thursday. The base of this trough is expected to move over the CWA with high winds mixing downward towards the surface.
Tonight will be cool with lows in the low to mid 40s under mostly clr skies. Thursday will be dominated by a strong upper ridge across the TN Valley.
959 AM EST Wed Nov 16 2016 High pressure will build into the area today, as a large mid- level ridge builds into the eastern half of the country through the end of the week.
700 AM EST Wed Nov 16 2016 A low pressure area over southern New England today will drift slowly north into Quebec by tonight. This low will bring a chance of rain showers to the north country today.
654 AM EST Wed Nov 16 2016 A few showers will accompany a weak cold front across the region today. Warmer weather will quickly return though ahead of a weekend cold front. Subsidence with building high pressure will clear remaining cloud cover tonight, but quickly resuming warm advection/rising heights will maintain lows near the averages. Warm high pressure will amplify over the Eastern CONUS as a deep trough digs across the West.
Periods of moderate to heavy snow showers are occurring early this morning across the higher terrain. Showery weather will dominate the remainder of today through this evening as an upper level trough passes overhead. One additional concern for this evening will be refreezing of wet road surfaces after sunset.
335 AM MST Wed Nov 16 2016 Upper air analysis shows broad ridge over the central CONUS, with trough moving on shore over the Pacific Northwest. Winds will become northwesterly and a little breezy today behind the cold front. Clouds will increase throughout the day as upper trough pushes the ridge eastward.
538 AM CST Wed Nov 16 2016 Weak cold front pushing SE through central IL early this morning to bring yet another shift in generally light winds. As a cold front approaches from the central Plains.
For plains locations north of the higher terrain, snow amounts are expected to be lower as some drier air over northern Montana filters into area and other locations in southeast montana. An upper level ridge will build over the region. bringing a return to warmer and drier conditions.
A Pacific storm system will bring a change from our recent dry and warmer than normal weather as it moves through the region today. Cooler temperatures and increased winds will accompany the system through Thursday, then dry and warming again for the end of the week. Upper trough moving over the coast this morning with a weakening front producing some very light precipitation. Expect some upslope showers through the afternoon as the trough moves inland, then end this evening as it pushes east of the district. The more notable impacts from this system will be increased winds and cooler conditions. Upper ridging will begin to build in from the Pacific on Thursday with dry conditions and a warming trend to end the week.
An upper level trough will move slowly across the area today and Thursday keeping cool and unsettled weather in the forecast.
945 AM EST Wed Nov 16 2016 A low pressure area over southern New England today will drift slowly north into Quebec by tonight. This low will bring a chance of rain showers to the north country today.
Upper trof off the west coast pushing onshore this morning. Strong wave in the southern portion of the upper trof is expected to dive through the Great Basin before spinning up a Colorado low on Thursday.
/Issued 342 AM CST Wed Nov 16 2016/ 00z regional RAOBS sampled an unseasonably strong upper ridge centered over northern Mexico while the low level thermal ridge over the High Plains was also sampled at seasonal extremes. The ridge shifts eastward today with thermal profiles warming and high temps unencumbered as skies remain clear.
547 AM EST Wed Nov 16 2016 High pressure for the remainder of the week.
We expect visibilities to increase some as an upper trough and associated showers move inland and reach the Rogue valley around 8am.
Currently, sunny skies cover the Keys and Bay/Gulf waters, with few to scattered stratocumulus over the Lower Straits. Temperatures were just beginning their rise through the lower 70s with dewpoints 57-61F. The deep upper trough axis is passing over the Keys at the present time, with the morning sounding showing extensive drying as deep descent overspreads the region, and cool advection below 825 mb.
Much cooler temperatures are expected through Thursday over the interior as cold air aloft passes through the area.
144 AM EST Thu Nov 24 2016 High pressure along the Mid-Atlantic coast will move offshore overnight as a cold front approaches from the west. A cold front, also with limited moisture, will move through Friday night. A short wave trough crossing the TN valley this evening is also forecast to cross our area late tonight. Temperatures will be unseasonably warm due to a low and mid level southwesterly flow, with highs in the lower to mid 70s across the area. Cloud cover Thursday night will keep lows in the lower to mid 50s. A stronger cold front will approach from the west Friday and cross the area Friday night. Compressional heating and a southwest flow ahead of the front will result in another unseasonably warm day with highs again in the lower to mid 70s.
A cold front will push south across the northern third of west central Texas early Thursday night, reaching KABI around 04Z where a wind shift is included. /issued 346 PM CST Wed Nov 23 2016/ (Tonight and Thanksgiving Day) As high pressure builds over the region, look for beautiful Fall weather, across West Central Texas, for the next 24 hours. For Thanksgiving Day, winds from the south will return, and highs will range from the lower 70s to the mid 70s.
A gradually weakening trough and its attendant low traversing the Great Lakes will shunt high pressure off the Carolina coast today. The highs axis will remain situated to the north of our area and maintain easterly flow within the low levels.
229 AM EST Thu Nov 24 2016 Upper trough now into the Upper Ohio River Valley as a surface cold front is crossing our region. High pressure will build in from the west and dominate our weather for the weekend.
256 AM EST Thu Nov 24 2016 A weak cold front cross today.
1056 PM CST Wed Nov 23 2016 Updated grids and products earlier, for more cloud cover overnight and slightly warmer lows.
Scattered light showers will continue to track across the Southern Appalachian Region tonight as a weakening cold front approaches the area.
In addition to the dense fog potential, a couple of sites have briefly reported freezing fog, and as such, will include a patchy mention of freezing fog generally from Claremore to Tahlequah to Sallisaw. A fairly fast moving, dry cold front will push through the region tonight, with a brief decrease in temperatures following on Friday.
132 AM CST Thu Nov 24 2016 dense freezing fog is underway across Lincoln and Custer counties associated with a westward moving arctic cold front. Weak southeasterly winds in advance of a cold front will allow stratus to back across north central Nebraska overnight and may provide for some patchy fog around dawn. Thursday night the northern plains trough continues to track towards the Great Lakes with ridge building across the Rockies.
337 AM EST Thu Nov 24 2016 For the first time in a while, a pronounced low level southerly flow ahead of weak surface-850mb trough exists across north/central Georgia.
1120 PM CST Wed Nov 23 2016 Latest 20z surface analysis indicates low pressure over western Illinois with trough extending north into western Wisconsin. Low pressure/trough and associated lift/forcing moves east into Michigan tonight.
Winds will slowly veer from NW to S today as a 925 mb inverted ridge axis transits the state, but with weak flow behind the ridge and increasing clouds out ahead of tonight's system, opted to hold 100 percent sky cover until late tonight. Also shrunk the diurnal range between the high and low temperatures for today and tonight owing to these clouds. However, amounts should be less than half an inch given the decaying nature of the trough and its limited moisture supply.
Upper level ridging will eventually replace the trough from yesterday. Another trough enters the coast, but over the next couple of days, the moisture stream and the trough slow and the precipitation shield from this low stays just to the west of the forecast area, affecting Boise and McCall, but barely producing a threat of precipitation in Stanley and Ketchum until Sat night. No significant wind is expected during this near-term period with no trough passing through.
Low pressure being analyzed on surface analysis over central Idaho with a trailing cold front into northwest Utah and northeastern Nevada. 700mb winds really begin ramping up towards 00Z today, up to 40kts as the low approaches. Warmer temperatures for Friday as 700mb temperatures climb back above freezing.
225 AM EST Thu Nov 24 2016 A warm front will move through the area this morning. Warm air will overspread the area this afternoon through Friday, followed by a cold front passage Friday night with cooler and dry air for the weekend. A weak warm front will push through the region this morning. A brief period of WAA and lift associated with a progressive mid/upper trough will progress from SW to NE across central and eastern NC this morning. The best chance of light rain will be this morning, with the trough axis expected to lift off to the NE this afternoon. The prefrontal conditions will lead to warmer minimum temperatures in the lower to mid 50s.
147 AM EST Thu Nov 24 2016 A weak cold front cross today. A weak cold front will slowly move across the area today. With low level flow becoming very weak later today, the low level moisture will remain tonight in the form of a stratus deck. Will go on the warmer side of MOS lows due to this cloud deck. In lingering low level moisture, have some showers sticking around Thursday night and Friday despite weak ridging aloft.
317 AM CST Thu Nov 24 2016 Showers associated with a passing cold front have come to an end across central Illinois early this morning: however, cloud cover continues to blanket the area. As a result, have gone with a cloudy forecast today with chilly highs in the lower to middle 40s. A vigorous wave apparent on water vapor imagery near the Aleutian Islands will pivot S/SE around a deep upper low anchored off the coast of British Columbia.
/Issued 740 PM EST Wed Nov 23 2016/ High pressure over the area will move east as a frontal system pushes into the state tonight. A cold front now over the Mid and Southern Mississippi River Valley will continue moving east rapidly over the next 24 hours pushing increased cloud cover and precipitation into North GA tonight. The highest POPs in the forecast right now are right around 30 percent between 06z-15z Thu.
356 AM CST Thu Nov 24 2016 A cold front now entering northwest Middle Tennessee will be near Nashville by 12z, and to Crossville by 17z. A little warm-up will occur over eastern areas between 12z and 17z, with temperatures likely to push into the lower to middle 60s before leveling off or falling a few degrees as we head through the afternoon. High pressure builds in over the weekend, bringing along some dry and seasonably cool temperatures.
Another pleasant fall day continues across South Florida, with temperatures generally around 80 and high pressure to the north. The high pressure at the surface will gradually shift eastward into the western Atlantic during the short term period, with continued mainly dry conditions expected, outside of a few sprinkles/light showers across eastern areas. Moisture will slowly increase in the low-levels during the period, and with onshore easterly flow expected, scattered to occasionally broken stratocumulus will be possible across the region especially along the east coast. Ahead of an approaching cold frontal boundary, the boundary layer will become favorable for potential fog formation in portions of the interior Thursday and Friday night, with Friday night seeing the greatest potential for fog.
311 AM CST Thu Nov 24 2016 Surface analysis this morning had the low pressure system that gave the area a wintry mix now over lower MI while a ridge of high pressure was building in from MN/IA. Lots of stratus in place across the region in the wake of the low. Ridge of high pressure will drift across the area today, but stratus will be trapped under the subsidence inversion. Look for highs in the middle 30s to the lower 40s. Attention then turns to an incoming mid-level trough for tonight which looks to give the area some light snow. Decreasing clouds expected for Friday night as a ridge of high pressure moves across the region.