Aikyam-Lab/Synoptic-Bench huggingface dataset:
728 AM EDT Tue Apr 11 2017 Scattered showers and possible thunderstorms are expected today and tonight with a weak crossing cold front. A weak cold front will approach the upper Ohio Valley today. Will increase PoPs to likely category just ahead of front, but most of the day will see PoPs in the low chance range. In addition, pre-frontal cloud cover will aid in keeping the lower atmosphere relatively stable, hence confidence in thunder remains low.
1045 AM MDT Tue Apr 11 2017 Satellite shows moisture increasing over western portions of the state from the incoming trough off the west coast. The flow aloft will start out westerly this morning but then gradually become more swly late this aftn thru tonight in advance of a very weak upper level trough. upper level high pressure will be centered over the Rocky Mountain Region with a weak westerly flow aloft over Colorado. with temperatures in the lower to mid 70s on the plains.
Stratus currently entrenched across much of the northern 2/3rds of the CWA will begin to erode as drier air advects in from the northwest and shallow boundary layer mixing begins after sunrise, clearing skies and allowing temperatures to rise into the lower to middle 60s.
1244 PM EDT Tue Apr 11 2017 Scattered showers and possible thunderstorms are expected this afternoon and tonight with a weak crossing cold front. The presence of the cold front across the region is quite evident looking at noon temperatures - Pittsburgh International Airport is reporting 59 degrees, Allegheny County Airport is reporting 64 degrees, and Arnold Palmer Regional Airport in Latrobe is reporting 73 degrees. Most of the rain showers are behind the cold front, and the minimal coverage of thunderstorms has nearly dropped off in the last hour.
1005 AM EDT Tue Apr 11 2017 High pressure will linger over the western Atlantic through midweek.
648 AM CDT Tue Apr 11 2017 A cold front will continue to slowly move through central and southern Arkansas today. High pressure will build over the area Wednesday. Today Through Wednesday Night An upper level ridge is currently over the east coast with an upper trough over the Great Lakes and Central Plains. This upper trough will continue to move east today. By tonight, some ridging begins developing over the Plains. A cold front is across northwest Arkansas at this time and slowly moving southeast. Another cold front will approach from the northwest Wednesday night so will keep small rain chances in the west.
Recent LAPS analyses indicate relative humidities in the lower 40s to upper 30s across portions of Glades, Hendry and Collier counties. /issued 332 AM EDT Tue Apr 11 2017/ Early morning analyses showed a low pressure system over the western Great Lakes states and associated front extending southwestward into Texas. With the low lifting out into Canada, along with height falls off the west coast and downstream height rises over much of the CONUS, expect this front to dissipate over the next couple of days far to the north of Florida. Otherwise high pressure is in control over the western North Atlantic and this will continue for much of the week.
High pressure builds back in Wednesday with cooler temperatures.
A cold front will usher in drier air Friday, which should bring an end to shower/storm chances. a cold front is located across southern Kansas and northern Oklahoma with lower 70s dewpoints ahead of the front into North Texas. A few storms could persist into the overnight hours as weak forcing from the upper trough will still be present and the actual cold front will be approaching the Red River. It looks like northeast surface winds will usher in some slightly drier air and dewpoints fall into the lower 60s.
Meanwhile, upper level ridging will continue to build over the Rockies. Towards the surface, a ridge of high pressure extending from the great lakes into Colorado will trek slightly northward today shifting northeasterly winds to the southeast by this afternoon. A dry weather pattern continues on Friday as an upper level ridge sits above the Central Plains.
Cold front is still in the process of dropping southward through Kentucky, as evidenced by a modest surge in north winds and lower dewpoints filtering in. Any convection in the south today will fall apart quickly as the sun sets, leading to dry conditions tonight and Friday as high pressure drops in from the north.
The current IR satellite image is showing mid to high level clouds rotating anti-cyclonically into Colorado beneath a ridge of high pressure. Once atmosphere recovers, another round of showers and thunderstorms will develop with decent support from energy kicking out of the base of the trough. Beyond this weekend, the ECMWF is advertising drier west to southwest flow over the region, whereas the GFS remains a little more persistent, holding onto the southwest component and hinting at showers lingering over the high country. As peak heating occurs thunderstorm coverage will be at it's maximum and mountain terminals will have the highest probabilities of being impacted by weather.
1159 AM EDT Thu Sep 1 2016 Dry high pressure will maintain seasonably cool weather through the weekend. More extensive cloud coverage currently along the ridges will lessen over the course of the afternoon. Temperatures will top out slightly below normal with cool advection in the wake of the recent cold front. The developing Eastern CONUS trough will drive tropical storm Hermine across the Southeast U.
1027 AM EDT Thu Sep 1 2016 Variable clouds along with seasonably cooler weather are expected today into Friday as a cold front clears south of the area.
Moisture limited within upper level ridge over the area, resulting in mostly clear skies through tonight. Although winds will not drop off tonight as they have the past couple, the relatively cool/dry air mass should allow for lows in the lower-mid 50s east to near 60 west. Lows will range from the mid 50s over our far northwestern IA zones, where winds will be lighter, to the lower to mid 60s west of I-29.
Showers and thunderstorms this region have developed out ahead of the cold front that was moving slowly across Southeast Oklahoma and Southwest Arkansas. but elevated convective debris will linger across much of the region as this weak trough slides SSE.
Temperatures across the area this morning currently range in the lower to middle 80s, with dewpoints mainly in the lower 70s. (Issued 308 AM CDT THU SEP 1 2016) As mentioned above, the primary impact for today will be an approaching cold front bringing the lift necessary for isolated to scattered thunderstorms during the afternoon and evening. The approach and passage of the cold front will result in somewhat 'cooler' daytime highs in the lower 90s. Dry and somewhat cooler air will then advect southward resulting in cooler overnight lows tonight in the 60s. Daytime highs will be 'cooler', but this will be short-lived.
TFJ Upper ridge will be over the Dakotas today while an upper low will be over British Columbia.
An odd nrly wind will persist through the period thanks to high pressure stretching over the core of the country and Hermine pushing slowly across the ern Gulf today. Tropical Storm Hermine continues on a slow northeast push toward the Florida Panhandle this morning ahead of mid to upper trough over the southeast states. At the surface across the central sections of the country, ridge of high pressure extends from the Great Lakes/Southern Canada to the northern gulf coast. Between Hermine and the ridge a northeast flow continues to push in a stable and modestly dry air mass. Friday as Hermine pushes the SE states a weak cold front will move through the local area.
747 AM EDT Thu Sep 1 2016 Dry high pressure will maintain seasonably cool weather through the weekend. Building high pressure will quickly suppress clouds, fogs, and any residual showers this morning. The developing Eastern CONUS trough will drive tropical storm Hermine across the Southeast U.
Sensible weather will be cooler and much less humid than previous days with dry northeasterly flow. Dry and cooler conditions are expected Friday as a broad mid- level ridge stretches across the central U. A mid-level trough will begin to move into the Pacific Northwest on Friday, with this trough deepening across the western U.
Chattanooga Airport, TN 91 71 87 66 / 30 20 10 10 Knoxville McGhee Tyson Airport, TN 88 68 83 64 / 50 20 10 10 Oak Ridge, TN 87 67 84 65 / 50 10 10 10 Tri Cities Airport, TN 82 63 79 59 / 50 10 10 20.
Upper level trough approaching the pacific northwest with a southwest flow aloft. The trough will move over the forecast area tonight into Friday.
80" with the highest values being west of Tucson. Water vapor imagery showed that yesterdays inverted trof was still over the area with possible weak circulation developing southwest of Nogales.
By Friday afternoon and evening, the first short wave trough in a series is expected to move east of the Rockies and across the forecast area.
Short range models are trending just a bit cooler in the upper 70s to low 80s in the northwestern counties which makes sense given a start in the mid 50s so brought highs down just a bit. The upper ridge will shift slightly south and east, setting up from the Central Plains into Ontario by tonight. The winds will help keep the boundary layer mixed and lows tonight should be near the 60 mark except to the trees in the far eastern tier where winds will be less and readings a bit cooler.
646 AM CDT THU SEP 1 2016 High pressure was located over northwest Ontario at 07Z/2am. Meanwhile, an upper level trof was dropping over the Arrowhead and northwest Wisconsin. The northeast flow will affect the forecast area today with increasing cloud cover and cooler air moving over Lake Superior. Max temps here will reach the lower 70s. The high will drift to the northern Great Lakes tonight. Meanwhile, upper level ridging was moving overhead. This combination will allow for a warmer airmass to begin to affect the area, along with gradually increasing humidity. Some fog will be possible late tonight in the closest proximity to the ridge axis which will be just to the east of the Wisconsin forecast area.
746 AM CDT THU SEP 1 2016 Water vapor satellite imagery/RAP 500mb analysis early this morning revealing a deep mid-level trough rotating southeast across WI/Great lakes region while an amplifying ridge extended from the Northern Plain into the central Provinces of Canada. Cyclonic flow associated with the trough was bringing some altocumulus southward into eastern/central Wisconsin. not much impactful weather as ridge of high pressure builds into the Upper Mississippi River region. May still see some of that altocumulus/higher stratocumulus linger over mainly central portions of WI as that trough rotates southeast out of the region. Surface to 500mb ridge of high pressure builds over the region tonight for clearing skies and light lower boundary layer winds. Ridge of high pressure holds strong across the area Friday and into the weekend for drier/milder conditions.
A large area of high pressure, centered from western Ontario southwest into Nebraska was providing clear and relatively cool conditions across the forecast area early this morning. This may hold temperatures a degree or two below guidance and mix down tool supported highs in the lower to mid 70s north and upper 70s south and southwest. Tonight, the advancing ridge axis with clear skies, light east to northeast surface winds and 850 mb temperatures lowering to near 10 celsius should lead to widespread lows in the 50s. Cannot rule out at least isolated upper 40s in typically cooler valley locations. The plus side to this, we stay drier and slightly cooler longer.
but elevated convective debris will linger across much of the region as this weak trough slides SSE. /issued 256 AM CDT THU SEP 1 2016/ Weak cold frontal boundary making its presence into southern MO/OK and will move to near the I-40 corridor by late this aftn. stg 595 plus upper ridge over area will bring temps back into lower to mid 90s and dewpoints above 70. Sea breeze activity expected to increase around base of ridge, resulting in low pops in extended for southern and eastern cwa.
/issued 151 AM CDT THU SEP 1 2016/ A cold front currently stretches from near Lebanon, Missouri to Mount Vernon, Illinois. The high will bring cooler and drier conditions to the area.
The upper level ridge may be increasing a bit with lower moisture available for convection. There is a slight chance for an isolated shower or thunderstorm to develop along the trough early this morning before 7:00 AM, mainly toward the coast. Otherwise, high pressure aloft and slightly drier air should translate into less coverage later today as compared to yesterday. Even so, the high resolution models once again show the potential for isolated showers and thunderstorms during the afternoon. The models continue to push a backdoor cold front into the area from the north by late Friday.
The high resolution models are good, no doubt, but while they may get the general concept right, they often fail at the exact placement of things. the upper level pattern will begin to transition as high pressure over the region shifts eastward and a trough strengthens over the western states.
730 AM EDT Thu Sep 1 2016 Variable clouds along with seasonably cooler weather are expected today into Friday as a cold front clears south of the area.
Will keep a rw-- mention going along the lake michigan shoreline this morning as this feature drops southward over the warmer waters of the bay and lake. Anticipate clouds will persist with the trough this morning. Pleasant but cool day continues into Friday as the high pressure ridge settles over the area.
Otherwise, expect high temperatures in the low to mid 90s today. The upper level ridge may be increasing a bit with lower moisture available for convection. There is a slight chance for an isolated shower or thunderstorm to develop along the trough early this morning before 7:00 AM, mainly toward the coast. Otherwise, high pressure aloft and slightly drier air should translate into less coverage later today as compared to yesterday. Even so, the high resolution models once again show the potential for isolated showers and thunderstorms during the afternoon. The models continue to push a backdoor cold front into the area from the north by late Friday.
Models continue the trend of the axis of a long wave trough and associated cold front will move into the Pacific Northwest today and across the forecast area tonight and Friday morning. As the trough moves closer to the forecast area will see increasing and lowering clouds late this afternoon into this evening. Winds will become breezy across the region Friday afternoon behind the cold front. With the colder temperatures can not rule out a light snow fall on the highest peaks in Baker County on Friday.
Guidance still suggests the higher humidity air will mix out in a narrow corridor across the UNR/ABR CWA boundaries but min RH values still expected in the 20 to 30 percent range. If the lower RH values do occur, than a fire weather headline will be needed.
1038 AM CDT THU SEP 1 2016 Cooler and drier air is moving into the region behind the front to the south, with northeasterly winds and mostly sunny skies. High pressure will bring in cooler air as well, expecting afternoon highs only reaching into the middle to upper 70s. Overnight lows will also be cooler.
Also of note is that we may also see a weak front move in from the north corresponding with the upper trough's passage and this may provide just a bit of an focus for convection this afternoon.
Afternoon POPs seemed reasonable in the main area of impact, but did reduce them some on the northern edge, near the Highway 412 corridor. Water vapor shows well defined wave moving south across western KS which continues to enhance additional showers and isolated thunder across northwest OK, while upper trough continues to drive southeast through the Great Lakes region. Surface cold front located over southern KS/MO this morning will continue to push south accompanied by much drier airmass with dew points eventually dropping into the 50s for a nice change of pace. With anticipated clearing skies tonight, much cooler overnight lows will result tonight followed by a pleasant Friday with sunny skies and below normal temps.
The current IR satellite image is showing mid to high level clouds rotating anti-cyclonically into Colorado beneath a ridge of high pressure. Once atmosphere recovers, another round of showers and thunderstorms will develop with decent support from energy kicking out of the base of the trough. Beyond this weekend, the ECMWF is advertising drier west to southwest flow over the region, whereas the GFS remains a little more persistent, holding onto the southwest component and hinting at showers lingering over the high country. Showers and thunderstorms will develop initially over the higher terrain this afternoon with some isolated storms spreading into the valleys after 21z. Gusty erratic outflow winds will be the primary concern today with storms with better potential for brief heavy rain over the higher elevations of KTEX and KASE, reducing cigs/vsby to MVFR conditions.
Surface analysis late this morning indicates a weak cold front bisecting the Mid-South. /issued 151 AM CDT THU SEP 1 2016/ A cold front currently stretches from near Lebanon, Missouri to Mount Vernon, Illinois. The high will bring cooler and drier conditions to the area.
/Issued 506 AM CDT THU SEP 1 2016/ Upper level ridge across the Central U. This should help a weak cold front push southward across the eastern half of the Panhandles.
922 AM EDT THU SEP 1 2016 Drier and cooler air into the weekend. Cold front continues to push through the region this morning. A cold front will push south of the region this morning.
652 AM CDT THU SEP 1 2016 Early morning METARs and MSAS analyses depict a much cooler and drier air mass spreading into the LSX CWA. 09z dew points were in the upper 50s to near 60 across the area, which is a welcome relief from the higher dew points of the last several days. Louis at 09z and should continue sinking southward this morning, bringing cooler and drier conditions to the rest of the CWA within the next few hours.
The mid/upper level ridge will build more over northern Mexico and western/central portions of Texas today.
653 AM CDT THU SEP 1 2016 A cold front will be moving through the region during the first half of the period. Latest surface analysis shows a cold front sitting over the far northern part of the state. Meanwhile, Canadian high pressure will be dropping into the Great Lakes region and introducing a shot of cooler and drier air that will dominate tonight through Friday night.
Skies will be clear as an upper level ridge of high pressure expands across the region. Overnight lows will range in the upper 60s to around 70 inland and in the lower to mid 70s near the coast and beaches. An expansive upper level ridge that stretches from Texas to the southeast states is keeping our weather dry. No rain is expected through Friday as the ridge remains in place along with drier mid and upper level air, noted by precipitable water values of only 1. Increasing 1000-850mb thicknesses for Friday suggest that highs will be around 2-3 degrees warmer than today. Lows tonight will be in the upper 60s to lower 70s, but slightly warmer along the immediate coast.
The upper-level pattern is defined by an mid-to-upper high over New Mexico and northern Chihuahua Mexico, and a weak upper trough extended across Southern California and the Northern Baja. The upper trough begins to slowly drift east over the next 24 hours, enhancing the mid-upper level lift across south central Arizona.
A sfc wind shift/weak cold front has moved south into southeast KS and southern MO while a weak upper level vort/mcv is tracking slowly east into southeast KS.
Surface winds will increase and become gusty at all terminal sites by mid to late Friday morning as the pressure gradient tightens in response to a developing sfc trof of low pressure over the plains of ern CO and ern NM.
Friday will be a few degrees warmer with highs in the mid 80's to mid 90's across most of southeast Wyoming. warmest across the lower elevations.
Temperatures are in the low-min 80s across most of western SD with a few 90s in northeastern WY. Dew points will be mostly in the low 50s across western SD, with 30s and 40s in northeastern WY.
Upper level ridging will move east Friday Night, allowing a trough and low pressure system to move into the Northland through the weekend.
75 High pressure will dominate the area through Friday before it begins to break down.
The pressure gradient between this high and low pressure to the west will tighten up on Friday. Main challenge then becomes precipitation chances as the low and associated frontal boundary track across the area.
A cold front is situated to our north this evening with an E-W oriented line of convection rolling southward across KY.
1042 PM EDT THU JUN 23 2016 A cold front extending from Northern Virginia to Northern Kentucky will push south into North Carolina Friday then move into the Midlands Friday night. Freezing level and WBZ heights will be 15 kft and 13 kft respectively and with hot temperatures hail threat will be lowered.
Convection across the northeast zones associated with a weak cold front continues to move northeast. A low pressure trof is moving over the West Coast and moisture ahead of this system is gradually spreading across Central and Southwest Montana. The airmass will become unstable again Friday and showers and thunderstorms will develop as a cold front crosses the region. Along with gusty and erratic winds with the thunderstorms, brisk west winds will spread across the region behind the cold front.
1027 PM EDT Thu Jun 23 2016 As high pressure builds into the North Country tonight, afternoon fair weather clouds will trend towards clear skies with overnight temperatures ranging from the mid 40s to low 50s. With high pressure dominating through the weekend, warm sunny days and cool moonlit nights will be the rule.
East west oriented warm frontal boundary will lift north to the northern fa by evening. Capping will increase during the day with lowest CIN north of warm front vcnty international border.
Warmer temperatures and increasing moisture are expected for Friday,with highs in the mid 80s east to the mid 90s west. Just west of the Missouri River the cap might be a bit weaker and with some very dry air in the low levels we might be able to get some cold pool driven convection into areas mainly west of the James River.
Currently, high pressure continues to build in from the west, with a stubborn stratus deck still parked over western Wisconsin and extreme eastern Minnesota. For Friday, the high will push east of our area and a developing system to our west will get southerly flow going through the day, especially across western Minnesota where the gradient becomes stronger by the afternoon. Hence, calling for a much warmer day with temps topping out in the low to mid 80s and the dew points rising well into the 60s during the afternoon.
943 PM PDT THU JUN 23 2016 Breezy, cool and showery weather will continue tonight into Friday with the arrival of a deep low pressure system. To the east, a cold front will be responsible for steady rain with embedded t-storms over Idaho/SE WA. a deep low pressure system tracking into the region will promote a band of steady rain across N Idaho and into SE WA with Spokane on the western fringes. Meanwhile, sct -shra will develop under the low center in and around north- central WA.
High pressure will provide dry weather for the weekend. A weak trough aloft and front in the vicinty (probably to our south in the afternoon) will have to work on some slightly drier air.
Convection across the northeast zones associated with a weak cold front continues to move northeast. A low pressure trof is moving over the West Coast and moisture ahead of this system will spread across Central and Southwest Montana. The airmass will become unstable again Friday and showers and thunderstorms will develop as a cold front crosses the region. In addition, brisk west winds will spread across the region behind the cold front.