Aikyam-Lab/Synoptic-Bench huggingface dataset:
(Issued 511 AM CDT SUN JUL 3 2016) The local forecast area remains situated beneath the northern periphery of a vast subtropical ridge extending wwd into the Gulf of Mexico this morning. Conditions tomorrow morning will be noticeably warmer and muggier, with a light ssw flow and temps only falling into the mid 70s. During the day tomorrow, the sheared mid-level trough axis -- which should extend from the upper Ohio valley swwd into the western Ozarks around 12Z -- is progged to translate ewd through the OH/TN valleys. Although this feature will continue to dissipate as the Atlantic subtropical ridge retrogrades to a position north of the Bahamas, weak forcing for ascent and height falls within the 700-500 mb layer should support an increase in convection -- especially over the nw half of the area -- by late afternoon.
611 AM CDT SUN JUL 3 2016 A pattern shift begins today where we'll see the semi stationary front along the front range move out on the high plains. An increasing zonal pattern will focus a better chance for precip across the Dakotas and warmer temperatures return.
GAH Previous Short Term Discussion: A cold front that was in Phillips and Petroleum Counties at 08z will move to the North Dakota border by mid morning. Flow aloft turns to the WSW as an upper trough moves inland into the Pacific NW.
1024 AM EDT SUN JUL 3 2016 High pressure will be over the region through Monday.
, with an upper ridge extending coast-to-coast across the southern-tiered states of the CONUS and into Mexico and beyond. Looking at the 00Z KMAF raob from yesterday, forecast soundings and temp fields suggest the warmer end of guidance is not all that unreasonable, and we've decided to stick w/the warm side. As mentioned above, the upper ridge will pretty much stay anchored in place thru the extended.
Have discounted the light pcpn that the GFS model generates over our western counties today, despite the presence of a weak warm frontal boundary just to our west. Feel that lingering high pressure and a lack of instability will preclude convective development.
1233 PM EDT SUN JUL 3 2016 Low pressure in northern Quebec will move into Labrador today while high pressure builds in the Mid-Atlantic states through Monday.
A larger H5 low is expected to make its way towards the region later in the week, but timing of the weaker waves in advance of the low will be difficult.
/issued 357 AM CDT SUN JUL 3 2016/ SHORT TERM (Today through Monday):The ongoing saga of a persistent mid level ridge over the area will continue in the short term. Low pressure over New Mexico and West Texas, which has deepened under a transiting mid level trough, will contribute to a tighter local pressure gradient, producing breezy and gusty winds for the CWA, primarily over eastern sections during the day, but also extending into the upper valley in the afternoon. A warm Sunday night will ensue under mostly clear skies and moderate winds with low temperatures from the mid 70s to the lower 80s.
729 AM EDT SUN JUL 3 2016 High pressure will be over the region through Monday.
1154 AM EDT SUN JUL 3 2016 High pressure centered over the Eastern Great lakes will move off the mid Atlantic coast this afternoon. This will allow low pressure to track along the Ohio River Valley Monday into Monday night. Another day of dry weather and filtered sunshine as high pressure remains over the area. The high. Even though winds try and shift to the south late today as the high shift east.
Current Situation and Analysis -- Data from the Key West morning radiosonde balloon indicated a very unstable atmosphere, with moist conditions in the lower troposphere, along with weak convective inhibition. A lower-tropospheric ridge has built westward during the last 24 hours, as expected, with an associated increase in south-southeasterly low-level winds. Prognostic Overview -- Additional geopotential height rises are likely this afternoon as the ridge builds further. A high pressure cell will build gradually westward from the western North Atlantic, to the central Florida Peninsula, this afternoon through the Fourth of July.
Have limited TAFS to just VCNTY remarks as light/variable flow shifts to onshore in the afternoon and keeping the highest odds of TSTM inland. A high pressure ridge bisects the coast coast waters.
1138 AM EDT SUN JUL 3 2016 Hydro An area of high pressure centered over Lower Michigan will track east today and off the Mid Atlantic states on Monday. This will allow a low pressure system to track eastward up the Ohio Valley Today into Monday. The main challenge in the short term deals with the risk for showers associated with the wave of low pressure that tracks up the Ohio Valley.
Did keep eastern zones cooler with expected persistent cloud cover today. Additionally for Monday, a cold front will sag southward into the region, bringing little or no additional precip potential, but slightly cooler temps for northern zones. This should also lead to some of the cooler overnight that we have seen in several days.
924 AM EDT SUN JUL 3 2016 Dry weather will continue today as high pressure controls our weather.
710 AM EDT SUN JUL 3 2016 Aviation An area of high pressure centered over Lower Michigan will track east today and off the Mid Atlantic states on Monday. This will allow a low pressure system to track eastward up the Ohio Valley Today into Monday. The main challenge in the short term deals with the risk for showers associated with the wave of low pressure that tracks up the Ohio Valley.
Did a quick update to the current zone forecast mainly to mention slight chance to chance pops for most of the lower and eastern halves of the cwfa for the rest of today. Slightly better forcing in the mid levels will also continue through monday as a deepening mid level trof over the central conus advances eastward over the mid section of the country. Surface and upper level ridging will continue to dominate the area through tonight. The combination of the upper ridge and a dry mid-level airmass will result in continued hot and dry weather.
Upper level trough over British Columbia and associated weak cold front is moving over OR and WA this morning. Increasing clouds with isolated showers and thunderstorms developing this afternoon over the higher terrain in the central Idaho mountains and near the NV/ID border. A broad upper trough centered off the British Columbia coast will slowly drop toward the Pacific NW through Monday. The front slowly advances southward Sunday night into Monday in conjunction with the digging trough. Along with the cooler temperatures, Monday is dry with gusty winds developing across higher terrain in the afternoon.
Cold front/stationary boundary has crossed into the mid state, and for the most part, has a stronger dewpoint gradient compared to the temperature gradient. Currently, temps in the southern part of the mid state are in the mid 60s with dewpoints in the low to mid 50s, and near the KY border, temps are in the mid 50s with dewpoints around 30.
A series of weak systems will help weaken high pressure, bringing chances for snow in the Sierra along with breezy winds for most of the area through the weekend.
513 PM CST Wed Feb 1 2017 Satellite imagery this afternoon shows a locally flat pattern prevailing across the Plains as a large trough dominates areas from Canada south into the mid-section of the United States; leaving our section of the Nation under the influence of a west-northwest flow.
The I-40 cold front will slowly drift southward tonight and Thursday as a strong push is not evident as the trough begins to encounter the ridge of high pressure in the southeast. Slightly cooler in the northern two-thirds of the area on Thursday as clouds and rain remain in the forecast. Again the cold front will slowly work south through the day, and possibly stalling by the afternoon south of the I-20 corridor. A cold front will approach from the northwest and very slowly move southward.
938 PM EST Wed Feb 1 2017 High pressure will gradually build into the region through the end of the week.
601 PM EST Wed Feb 1 2017 A cold front will move across the forecast area tonight. High pressure will plunge into the Central Plains late Thursday and then will move across the Upper Ohio Valley this weekend.
319 PM MST Wed Feb 1 2017 Surface ridging remains in place over the southwestern United States this afternoon.
701 PM EST Wed Feb 1 2017 Low pressure in Canada continues to send a cold front through early tonight with scattered snow showers. Then, drier and cooler air enters the region as high pressure takes control into the weekend.
However, we do have a short wave trough moving out of the Idaho panhandle Thursday, so we are not without some forcing.
Primary concern in the near term forecast is the potential for widespread stratus deck along with areas of freezing drizzle developing over the southeast plains. Models showing areas of fog, freezing drizzle or maybe light snow spreading into areas along and north of highway 50 during the early morning hours. Greatest concern for fog and freezing drizzle over portions of El Paso county as east to southeast surface winds will favor that area. With the temperature warming above freezing in ALS today, some melting occurred and its likely that fog will develop overnight and linter into Thursday morning. Temperatures Thursday will be slow to warm on the southeast plains, but warmer western portions of the CWA.
/issued 239 PM CST Wed Feb 1 2017/ A cold front positioned just to the north of the Interstate 40 (I-40) corridor continues to make very slow progress south.
546 PM CST Wed Feb 1 2017 At H5 strong Hudson Bay low has a broad trough over most of the northern CONUS. Over the west weak ridge with high over Vancouver between Hudson Bay trough and closed low off the Pacific Northwest. The main area of forcing is related to weak PV anomalies aloft rotating through the broad trough across the northern portion of the country. Later Thursday however a slightly strong PV anomaly rotates into the main trough aloft and will allow upper level height falls across the High Plains which will turn low level winds to the southeast but remaining upslope. However the flow will become more southwest which will again enhance the isentropic lift as warmer air in the mid levels is transported eastward off the higher terrain.
Regarding fog formation, think that although there is a chance for sea fog, confidence in sea formation is low due to the expected wind direction and the rather small area of fetch over the cooler water areas. /ISSUED 257 PM CST Wed Feb 1 2017/ Unseasonably mild and breezy weather today over sern TX ahead of weak low pressure center over n-central TX and associated cold front pushing swd across west TX early this afternoon. Tomorrow's forecast remains a bit tricky as the cold front over west TX pushes sewd into the area during the day.
Thus, issued a Freezing Fog Advisory for these areas, which includes I-80 from just west of Cheyenne to Buford & Vedauwoo, to the Summit. Models in decent agreement in depicting a lull in the heavier snow overnight into Thursday morning but there will be some areas of fog and maybe even a bit of freezing drizzle though very cold temperatures should hinder the freezing drizzle overnight. especially near and north of the Pine Ridge.
620 PM EST Wed Feb 1 2017 Weak low pressure will move east towards the Bay of Fundy this evening. Weak high pressure builds over the area later tonight.
637 PM EST Wed Feb 1 2017 High pressure will gradually build into the region through the end of the week.
546 PM CST Wed Feb 1 2017 A trough of low pressure extending from Michigan into north-central Illinois is triggering a few rain/snow showers in the Chicago area this afternoon. High pressure will ensure mostly sunny and cool conditions on Thursday, with highs only reaching the upper 20s and lower 30s. Trough over southern Canada seen rotating southeast toward Great Lakes. This system will push surface shot of cold air into the plains, with the associated cold high pressure to influence weather for IL through the rest of workweek. High pressure to move east of area by Sat. Significant trough off west coast today, will be producing series of upper waves moving through rockies, with first reaching central plains on Sat.
Will transition back into MVFR as the morning progresses with a few PM showers possible as a cold front advances across the forecast area.
515 PM CST Wed Feb 1 2017 Low and mid level clouds sagging southward behind the exiting cold front will continue to exit the area to the southeast. The high clouds expand to the northeast during the afternoon, but the dry mid levels will keep the region dry through the day.
A cold front to our north will continue advancing slowly southward into the region this evening through the overnight hours. This should allow for some slight improvement in ceilings as N/NE winds increase during the afternoon in the wake of the front, but low clouds will linger beyond this period with a strong low-level inversion in place due to the shallow nature of the cooler air mass. /issued 241 PM CST Wed Feb 1 2017/ Clouds will increase through the overnight period ahead of a cold front to our northwest. The low level moisture and cloud cover will keep overnight temperatures in the lower 50s across the area except for Northern Oklahoma where temperatures will be in the upper 40s. Light rain will form along and near the low and frontal boundary causing cooler temperatures.
614 PM EST Wed Feb 1 2017 A cold front will move across the forecast area tonight. High pressure will plunge into the Central Plains late Thursday and then will move across the Upper Ohio Valley this weekend.
327 PM MST Wed Feb 1 2017 Current surface analysis shows high pressure over MT and southwest Canada, with arctic boundary generally along the lee of the northern and central Rockies. Upper level analysis shows low anchored over southern Hudson Bay, with trough covering much of southern Canada and the northern US.
556 PM CST Wed Feb 1 2017 The cold front is just north of a line from ADF to PBF.
This period will be marked by cold Canadian high pressure slowly building overhead, with northwesterly flow at 500mb as a large low spins across Hudson Bay/James Bay. The cold air has successfully taken over the region, with the cold front now shifting over the far southern portions of SD.
The mean upper trough over eastern North America will be reinforced later this week and bring a return of below normal temperatures for a change. Cold front will push through central Pa later Thursday morning, followed by lake effect snow showers over the NW Mtns. Ens mean 850 temps support max temps from the low 20s across the NW Mtns, to the upper 30s over the Lower Susq Valley.
432 PM MST Wed Feb 1 2017 Surface ridging remains in place over the southwestern United States this afternoon.
In the low levels, high pressure is in place across the Florida Peninsula. Marine winds are out of the east at 10 to 15 knots east of the Lower Keys, and near 15 knots around the Lower Keys and Dry Tortugas.
The mean upper trough over eastern North America will be reinforced later this week and bring a return of below normal temperatures for a change. Radar loop at 22Z showing a dwindling line of snow showers pushing south of I-80, as it encounters a more stable environment (warmer mid level temps) across the southern half of the state.
/Issued 259 PM CST Wed Feb 1 2017/ Cold front has passed through a good chunk of eastern Oklahoma and northwest Arkansas but is currently hung up in the higher terrain of southeast Oklahoma and west central Arkansas.
Warmer air rising above a slow moving cold front is generating some clouds and widely scattered showers.
Lows should drop to the upper 40s to lower 50s for the interior and warmer across Marting county in the mid to upper 50s near the coast. High pressure providing good boating conditions with light wind and seas mainly 1-2 ft.
932 PM EST Wed Feb 1 2017 Weak low pressure will move east towards the Bay of Fundy this evening. Weak high pressure builds over the area later tonight.
814 PM EST Wed Feb 1 2017 A trough of low pressure will keep snow shower chance in the forecast through part of Thursday.
500 PM CST Wed Feb 1 2017 Colder cyclonic flow in place across the area today following a rather wild cold frontal passage with vigorous snow showers yesterday afternoon/overnight. High pressure remains in control through Thursday night for quiet/cold conditions.
1013 PM EST Wed Feb 1 2017 A cold front will move across the forecast area tonight. High pressure will plunge into the Central Plains late Thursday and then will move across the Upper Ohio Valley this weekend.
554 PM EST Wed Feb 1 2017 A trough of low pressure will keep snow shower chance in the forecast through part of Thursday.
931 PM CST Wed Feb 1 2017 9 PM CST surface map showed northerly winds over all the Midsouth, with cooler post frontal temps most notable north of I-40. /issued 239 PM CST Wed Feb 1 2017/ A cold front positioned just to the north of the Interstate 40 (I-40) corridor continues to make very slow progress south.
A cold front, currently located just south of San Angelo, will push south this evening to the Interstate 10 corridor and reach KSOA and KJCT around 9 PM. Dry and Cooler. A weak cold front, currently extending along or near our Interstate 20 corridor, will continue to slowly move south tonight. This front will bring winds from the north and cooler air to West Central Texas. Lows tonight will range from around freezing north to around 40 at Junction. Winds from the north tomorrow will continue to bring cooler air into West Central Texas. (Thursday Night through next Wednesday) The cold front will pass through the forecast area Today will be well south of the area by Thursday night.
Some southerly flow around the periphery of the high will still bring the possibility of advection fog from the Big Bend region into the Suwannee River Valley of inland North FL along the I-75 corridor which could then spread into inland SE GA by sunrise. The weak high pressure ridge overhead will allow for Atlc Sea Breeze to push inland during the mid-afternoon with highs in the lower 70s at the beaches and well into the mid/upper 70s inland.
944 PM EST Wed Feb 1 2017 A cold front approaches from the northwest tonight and crosses the Tri- State on Thursday.
849 PM CST Wed Feb 1 2017 The cold front has moved to just south of the Louisiana border. (ISSUED 556 PM CST Wed Feb 1 2017 ) The cold front is just north of a line from ADF to PBF.
The latest surface map features a quasi-stationary boundary down across the Tennessee Valley, with high pressure aligned from the Continental Divide through the Ohio Valley. Aloft, broad cyclonic flow remains across the northern half of the CONUS, as a Hudson Bay upper level low continues to hold sway. This will likely be the last day of 50 degree readings for a little while, as high pressure will continue to build in from the northwest, with colder air advecting in. Have lows ranging from upper 20s in the north, to the lower 30s in the south; however, could see some valleys decoupling a bit further south as well, and wind up in the 20s once again, similar to last night, if the clearing holds on longer.
351 PM MST Wed Feb 1 2017 Freezing drizzle. Since then the low, showing up nicely in the wind field, has shifted east and was out near Strasburg in Adams county. Freezing drizzle has also been observed. both light snow and freezing drizzle have been occurring this afternoon with hard surfaces in the Akron area coated by a thin layer of ice. With the earlier start to the freezing drizzle, have moved up the Freezing Drizzle Advisory to start now. In the high country. continued dry and mild with gusty west- northwest winds on the high ridges overnight. and freezing drizzle and/or light snowfall going at least through mid to late morning. In the high country. In additional another weak associated cold front will push across the plains moves in Thursday night with reinforcing low clouds.
943 PM EST Wed Feb 1 2017 A cold front is dropping south through the eastern Tennessee Valley this evening, triggering off a some scattered clusters of light showers. Thus, despite a push of colder air, temperatures will remain above the freezing mark in most places -- generally in the upper 30s to lower 40s in the Valley, with mid 30s across SW VA and the Plateau. Chattanooga Airport, TN 44 55 37 49 / 30 20 30 30 Knoxville McGhee Tyson Airport, TN 39 51 34 46 / 50 20 20 20 Oak Ridge, TN 39 52 33 46 / 40 10 20 10 Tri Cities Airport, TN 37 49 30 42 / 40 10 10 10.
415 PM MST Wed Feb 1 2017 Current surface analysis shows high pressure over MT and southwest Canada, with arctic boundary generally along the lee of the northern and central Rockies. Upper level analysis shows low anchored over southern Hudson Bay, with trough covering much of southern Canada and the northern US.
548 PM CST Wed Feb 1 2017 Cold front still looks to make passage along the I-35 TAF sites around 05-06Z for AUS and a few hours later for SAT/SSF. Models do not show any great isentropic lift in the low levels tomorrow. Cold front moving through NW/N-Central TX is expected to arrive into the Hill Country during the evening and possibly reach the Balcones Escarpment/I-35 Corridor communities by around midnight.
248 AM EDT WED SEP 7 2016 Upper level high pressure will extend from northern Mexico northeastward across Texas and into the Tennessee Valley, and the remnants of Hermine will remain off the mid Atlantic coast. In the low/mid levels, high pressure will settle over to just north of the region, with very dry air pushing moving into the area. Overnight lows will be cooler than normal in the low to mid 60s inland around 70 along the immediate coastline and along the St.
359 AM CDT WED SEP 7 2016 Cold front very close to Pascagoula at 0330.
101 AM EDT WED SEP 7 2016 High pressure will remain across the region through Wednesday. A cold front will approach later Thursday, then cross the region Thursday night. The biggest change with this update was with headlines: a Dense Fog Advisory was issued while the High Surf Advisory was cancelled. See the Coastal section below for details on the High Surf Advisory. An upper level ridge of high pressure will remain over our area bringing warm and mainly dry weather tonight and Wednesday. A developing warm front will lift across northern Maine Wednesday night with increasing clouds along with a chance of showers. Low pressure will track northwest across Quebec province Thursday drawing a cold front toward northwest Maine. The low tracks north of Maine Thursday night, drawing the cold front across the forecast area.
While the predominant flow in the lower to mid levels remains westerly creating a drying downslope flow off the higher terrain for our western zones, there is a moist and unstable air mass in our east thanks to high theta-e levels.
145 AM EDT Wed Sep 7 2016 High pressure, extending from eastern Canada across our region, will keep things warm and rain-free into Wednesday. Thursday will be a very warm, humid day, with some late afternoon or evening showers and thunderstorms, ahead of a weak cold front. In between lies a narrow wedge of high pressure, with an associated dry air mass. Highs will top out in the low-mid 80s for most of us, with continued low humidity levels. Also, some mid-level debris could spill over the upper ridge and down into our area. The pattern Wednesday night similar to now with the weakening closed low of Hermine off of Long Island still there. Weak ridging from the Ohio Valley into western NY. Low pressure over se Ontario will move northeast this period finally dragging a cold front through late Thursday.
The upper ridge will hang on for one more day resulting in a mostly dry Wed. Hot temps will continue with highs in the low 90s today and lows in the upper 60s/lower 70s tonight.