Aikyam-Lab/Synoptic-Bench huggingface dataset:
A low pressure system will move across northern Ontario and Quebec Tue through Fri, bringing 850mb down to -12C and WSW to W winds Tue night through at least Wed. With uncertainty in timing of the trough, there is, of course, uncertainty as to when heaviest snow will fall and exactly where. An approaching low pressure trof will tighten the gradient Mon night/Tue, resulting in sw winds up to 30 kts. There could be some w gales to 35 kts over mainly the ncentral on Tue night into Wed under the tighter pressure gradient on the southern flank of the deepening low pressure moving into nw Ontario and with the arrival of colder air that will increase overwater instability.
418 AM PST Sun Dec 4 2016 It will be sunny and warmer today.
410 AM CST Sun Dec 4 2016 Water vapor imagery depicts an upper low INVOF Bay of Calif with a subtropical jet having shifted e along with the higher theta-e air aloft. By 12Z this morning the upper low will be moving e and more substantial thickness cooling will occur across the Trans Pecos. The position of the upper low will be favorable for increased upper level divergence with some redevelopment of the mid/upper level jet too. A weak cold front will follow Tue in wake of the upper low keeping high temps in the 50s N of I-20.
Today Through Monday Night The latest weather map shows an upper trough over the Plains and a closed low over Mexico. The upper trough will move east today and tonight to the east coast. The upper low slowly moves northeast Sunday night and Monday and will be in southern Arkansas Monday night. The moisture is streaming northeast with the help of the low pressure system over Mexico.
Precipitation will likely end by early afternoon as upper trough axis shifts east of the area.
Water vapor imagery highlights a potent upper level low still digging southward near the Baja Peninsula. High pressure centered over the central Appalachians has spilled southeastward deep into the western North Atlantic. The continental air remains well to our north, and given the eastward moving high pressure system, will remain out of reach. Partly cloudy skies and east-southeast breezes will persist today, with very little rain chance on account of the deep ridging aloft.
The upper low is progged to shift east today through Monday. As the upper low and the sfc coastal low exit to the NE late tonight through Mon, rain chances will diminish from west to east.
A cold front will move through the state beginning Sunday afternoon bringing light snow showers to northern Nevada Sunday into early Monday.
Expecting widespread showers/associated poor (mainly LIFR) flying conditions to persist through the period as copious Gulf moisture lifts nwd over a persistent coastal trof over the region. but nrly flow and very reduced ceilings are expected to return by mid-morning as the low scoots off to the ene. Aloft an upper low is still slowly southeast over Northwest Mexico. Tonight and into Monday, the upper low will gradually turn east then speed up while moving northeast. This low is expected to move onshore in Jefferson County or Cameron Parish then keep on northeast. To the right of the low warm and moist air will spill in from the gulf.
633 AM EST Sun Dec 4 2016 High pressure approaches from the west today and passes east of the area late tonight.
A warm front was moving northward, and it will stall near the Altamaha River this afternoon. Near and north of the boundary temperatures will remain near 70 to the lower 70s. Warm front will push northward along the Altamaha, and showers will develop along it, well north and west of the TAF sites today.
1027 AM EST Sun Dec 4 2016 High pressure over the area will move east late today. High pressure will build back in for Monday.
407 AM CST Sun Dec 4 2016 The low level stratus evident in satellite imagery this morning is gradually shifting east in response to a trough of low pressure crossing central Nebraska. There is a weak upper wave that will move through the area along with a cold front. Even with the cold front moving through during the day, the highs should reach the mid 40s to around 50.
650 AM EST Sun Dec 4 2016 A ridge of high pressure will slowly build into the region today, before moving offshore tonight.
Monday will be a day of change as a cold front begins to push into Northern Utah and Northern Colorado.
935 AM EST Sun Dec 4 2016 Aviation section updated An upper trough will move across central Indiana today bringing rain and some snow to the area.
549 AM EST Sun Dec 4 2016 High pressure approaches from the west today and passes east of the area late tonight.
743 PM EDT Sat Oct 29 2016 Dry tonight with high pressure holding on, and above normal temperatures again Sunday.
the lower cigs/vis should remain just east of the Metroplex sites through the early morning hours so will keep VFR conditions prevailing. The upper level ridge will start sliding east on Sunday, but tomorrow will be very similar with highs in the mid to upper 80s. Low level moisture will once again advance north overnight with dewpoints increasing into the lower 60s across the eastern half of the region by daybreak.
945 PM CDT Sat Oct 29 2016 Cold front will continue to move across parts of the region tonight bringing some slightly cooler air to the area. Then, early in the morning, a wind shift from the north will accompany a cold front for most terminals.
1144 PM CDT SAT OCT 29 2016 Surface cold front approaching from the north has reached as far southward as Quad Cities to Chicago and is making steady progress southward. Currently all precipitation is far north of the surface cold front across central Wisconsin in a region of frontogenesis off the surface. With high pressure ridge to the southeast and another storm system developing in the Plains, Central Illinois is dominated by warm and breezy conditions this afternoon. However, a cold front to the northwest will slowly drift into the region later tonight. bringing cooler temps with it. We will only see a glancing blow of the cool high pressure, allowing low temps Sunday night to remain above normal.
733 PM EDT Sat Oct 29 2016 Eastward moving low pressure over southwest Quebec will take a cold front across northern OH/nw PA late tonight.
1059 PM CDT Sat Oct 29 2016 High pressure remains over the Southeast United States this evening. High pressure will remain over the southeast U.
748 PM EDT Sat Oct 29 2016 High pressure will remain over the Southeastern U.
715 PM EDT Sat Oct 29 2016 Low pressure over the northern Great Lakes will track across Quebec tonight. This low will drag a trailing cold front across the region Sunday and move to the south of our area by Sunday evening while another weak low travels along it.
1009 PM EDT Sat Oct 29 2016 An unseasonably strong 500 mb ridge over the southern United States will keep our region on the warm side of normal most of the coming week.
735 PM EDT Sat Oct 29 2016 An unseasonably strong 500 mb ridge over the southern United States will keep our region on the warm side of normal most of the coming week.
/EC/ Tonight through Sunday, Persistence continues to reign supreme with regard to the forecast across the Lower Mississippi Valley. The stubborn ridge of high pressure aloft and at the surface shows little signs or impetus to move from overhead, despite a weak short wave drifting west to east to our north through the short term period.
858 PM CDT Sat Oct 29 2016 Made some slight adjustments to tweak the temperature and dewpoint temperatures down a couple of degrees given the current cooler trend. Some areas have already dropped into the low 60s (air temperatures). Dewpoint temperatures are in the low 50s for the most part. As a result, have lowered the overnight low temperatures in the low to mid 50s.
926 PM EDT Sat Oct 29 2016 High pressure over the Carolinas will continue to drift south. A cold front will cross the Mid Atlantic Sunday evening.
00 UTC surface analysis shows an area of high pressure centered just off the GA coast in the Western Atlantic.
The latest data continues to support the dvlpmt of MVFR cigs behind a cold front Sunday morning across NE OK, with a slow and gradual trend toward VFR by mid afternoon. /Issued 900 PM CDT Sat Oct 29 2016/ Latest surface analysis places cold front just north of a line from St. High temps on Sunday are expected to be a few degrees cooler in NE OK but we may see near record temps in places like McAlester and Fort Smith again.
637 PM CDT Sat Oct 29 2016 A cold front moving through tonight will bring a temporary reprieve from the 20+ degree above normal temperatures.
842 PM CDT SAT OCT 29 2016 Surface cold front approaching from the north has reached as far southward as Quad Cities to Chicago and is making steady progress southward. Currently all precipitation is far north of the surface cold front across central Wisconsin in a region of frontogenesis off the surface. With high pressure ridge to the southeast and another storm system developing in the Plains, Central Illinois is dominated by warm and breezy conditions this afternoon. However, a cold front to the northwest will slowly drift into the region later tonight. bringing cooler temps with it. We will only see a glancing blow of the cool high pressure, allowing low temps Sunday night to remain above normal.
Then, early in the morning, a wind shift from the north will accompany a cold front for most terminals.
900 PM EDT Sat Oct 29 2016 High pressure will build across the area through Sunday.
/issued 405 PM CDT Sat Oct 29 2016/ A broad, but flat, upper ridge will remain centered over the Southern U.
957 PM EDT Sat Oct 29 2016 High pressure will prevail through the weekend.
624 PM CDT SAT OCT 29 2016 With high pressure ridge to the southeast and another storm system developing in the Plains, Central Illinois is dominated by warm and breezy conditions this afternoon. However, a cold front to the northwest will slowly drift into the region later tonight. bringing cooler temps with it. We will only see a glancing blow of the cool high pressure, allowing low temps Sunday night to remain above normal.
747 PM EDT Sat Oct 29 2016 High pressure will remain over the Southeastern U.
/issued 956 PM CDT Sat Oct 29 2016/ Very little to talk about tonight, as high pressure both aloft and at the sfc continue to dominate our weather pattern. Band of CI moving across our nwrn areas associated with a weakness rounding the nrn/nern periphery of the ridge.
830 PM EDT Sat Oct 29 2016 A cold front will move across the area overnight followed by a good chance for light rain from far southern Lower Michigan into northwest Ohio and northern Indiana into early Sunday. Rain should end by Sunday evening as high pressure builds into the area. Unseasonably warm weather was over the area and ahead of a cold front this afternoon with temperatures around 70 to the upper 70s. A cold front extended into far northwest Illinois across Lower Michigan.
1129 PM CDT Sat Oct 29 2016 A cold front moving through tonight will bring a temporary reprieve from the 20+ degree above normal temperatures.
1041 PM EDT Sat Oct 29 2016 A a fast moving low pressure system will move eastward across southern Quebec this evening bringing showers and slightly milder air to New York and Vermont. A weak cold front will move southeast across the region tonight with scattered showers as well.
956 PM CDT Sat Oct 29 2016 Very little to talk about tonight, as high pressure both aloft and at the sfc continue to dominate our weather pattern. Band of CI moving across our nwrn areas associated with a weakness rounding the nrn/nern periphery of the ridge. /issued 405 PM CDT Sat Oct 29 2016/ A broad, but flat, upper ridge will remain centered over the Southern U.
/issued 327 PM CDT Sat Oct 29 2016/ (Tonight and Sunday) Going with a dry forecast the next 24 hours as upper level high pressure ridge continues to bring very warm and dry weather.
900 PM CDT Sat Oct 29 2016 Latest surface analysis places cold front just north of a line from St. High temps on Sunday are expected to be a few degrees cooler in NE OK but we may see near record temps in places like McAlester and Fort Smith again.
1249 AM EDT Sun Oct 30 2016 Eastward moving low pressure over southwest Quebec will take a cold front across northern OH/nw PA late tonight.
/issued 1059 PM CDT Sat Oct 29 2016/ High pressure remains over the Southeast United States this evening. High pressure will remain over the southeast U.
/17/ Tonight through Sunday, Persistence continues to reign supreme with regard to the forecast across the Lower Mississippi Valley. The stubborn ridge of high pressure aloft and at the surface shows little signs or impetus to move from overhead, despite a weak short wave drifting west to east to our north through the short term period.
The area still remains under the influence of a strong high pressure system this evening. Little in the way of changes to the forecast were necessary at this time, though overnight low temperatures may be a tad cooler than forecast.
911 PM PDT Sat Oct 29 2016 A low pressure system will impact Central and Northern CA tomorrow, but our region will miss out on the majority of the moisture.
High pressure remains in control through the remainder of the weekend. Chattanooga Airport, TN 54 84 56 84 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 53 82 56 82 / 0 0 0 0 Oak Ridge, TN 53 82 56 82 / 0 0 0 0 Tri Cities Airport, TN 48 77 52 77 / 0 0 10 0.
An elongated area of high pressure across the Southeast U. Highs Sunday will once again reach the lower-mid 80s. High pressure north of the area will shift slowly southward into Sunday while weakening slightly.
758 PM EDT Sat Oct 29 2016 An unseasonably strong 500 mb ridge over the southern United States will keep our region on the warm side of normal most of the coming week.
12 AM EDT Sun Oct 30 2016 High pressure will remain over the Southeastern U.
1119 PM CDT Sat Oct 29 2016 Surface cold front continues to make progress southward through the FA this afternoon. A much cooler day is expected for Sunday, but still above normal for late October.
806 PM EDT Sat Oct 29 2016 Aviation A weak cold front will push southward through Michigan by Sunday morning resulting in rain showers and perhaps a few thunderstorms.
The upper level ridge will start sliding east on Sunday, but tomorrow will be very similar with highs in the mid to upper 80s. Low level moisture will once again advance north overnight with dewpoints increasing into the lower 60s across the eastern half of the region by daybreak.
The Florida Keys will be located between a large area of high pressure near the Carolina coastline and a broad area of low pressure over the northwest Caribbean Sea.
712 PM CDT Sat Oct 29 2016 Surface cold front continues to make progress southward through the FA this afternoon. A much cooler day is expected for Sunday, but still above normal for late October.
1055 PM CDT Sat Oct 29 2016 Another tweak to keep the forecast in line with obs - this also resulted in nudging low temps up slightly, as short range models continue to suggest a warmer night than usual. Upper low seen on w/v imagery near Tampico will make its way westward into Mexico over the next couple days. As this occurs, a ridge will expand eastward over the top and eventually settle over the eastern Gulf and southeastern states for most of the work week. At the surface, southeast Texas will remain situated on the western periphery of a ridge anchored across the northern Gulf and southeast. The higher than normal tides combined with waves has also led to strong rip currents being noted by the beach patrol.
A brief shower or a little drizzle is possible underneath some of the low stratus lingering around, though coverage should be limited.
Breezy ssely winds and high waves will then develop for Mon into Mon night as strong low pressure tracks from the northern Great Plains into wrn Ontario Canada. Overall though, should see dry weather under the high. Will be a cooler day, with highs back around normal for late October.
922 PM EDT Sat Oct 29 2016 Eastward moving low pressure over southwest Quebec will take a cold front across northern OH/nw PA late tonight.
715 PM EDT Sat Oct 29 2016 High pressure will build across the area through Sunday.
852 PM EDT Sat Oct 29 2016 Eastward moving low pressure over southwest Quebec will take a cold front across northern OH/nw PA late tonight.
1040 PM EDT Sat Oct 29 2016 Dry tonight with high pressure holding on, and above normal temperatures again Sunday.
825 PM EDT Sat Oct 29 2016 A cold front will increase rain chances for tonight and Sunday. High pressure will then return dry and warm conditions through midweek. A cold front will continue to slide across the Great Lakes and over the Upper Ohio region as the night progresses. The passing cold front will lead to a strong gradient in high temperatures north to south tomorrow, but highs will generally above-average.
930 PM EDT Sat Oct 29 2016 High pressure will remain over the Southeastern U.
This low stratus will continue to spread northeast towards the Interstate 20 corridor through day break, and could potentially reach the I-20 and reduce ceilings at KHKS and KJAN to MVFR/IFR categories by 12Z. Ridging aloft wedged into the region from the west and high pressure at the surface sitting south of the forecast area, will again promote warm conditions across the forecast area today. For tonight, a cold front will begin dropping southeast towards the Highway 82 corridor. Convection is expected to develop over the Mid- South region late this afternoon, and could brush portions of the CWA north of the Highway 82 corridor tonight as it shifts southeast while dissipating.
Very warm temperatures expected Tuesday followed by cooler temperatures for the latter half of the week behind the front. Warm advection coupled with downslope flow ahead of approaching cold front will result in temperatures well above normal in the low to mid 80s. Northwest flow aloft with upper trough over eastern Canada. The front will push south of the area on Wednesday with high pressure building in from the north. Guidance indicating temperatures about 15 degrees cooler on Wednesday with lingering cloudiness expected.
322 AM CDT Tue Mar 21 2017 Cold front currently located near the OK/KS state line this morning will continue a slow push southward today.
This will lead to a surge in temps through the remainder of the afternoon for the cooler areas.
127 AM EDT Tue Mar 21 2017 A weak cold front will exit the area this morning and provide a shower or two as it passes. A second, stronger cold front, will sweep through tonight, bringing much colder temperatures on Wednesday. Scattered showers are possible across the far southeast this morning as the cold front crosses those locations. Maybe a scattered snow shower in the I-80 corridor early Wednesday morning, or a snow shower in the higher elevations once the heart of the cold air reaches the ridges.
422 AM CDT Tue Mar 21 2017 An upper ridge over the Panhandles today through Wednesday will finally push off to the east by late Wednesday as a closed upper low over southern California and the southwestern states approaches from the west. A cold front which has pushed into the southern portions of the Texas Panhandle will continue to track slowly south out of the forecast area today. A secondary surge of much cooler air will push across the Panhandles tonight.
258 AM CDT Tue Mar 21 2017 Today and Tonight, An upper level trough across the upper Midwest will dig southeast across the Great Lakes States and amplify. The low-level CAA by northeast surface winds will bring a drier and cooler airmass southwest across the CWA. There may be some weak isentropic lift at the 295-300K level for some light rain-showers and if the precip can make it through the dry low-levels then wet-bulb cooling may cause a bit of snow to mix in at the low-levels. Wednesday marks the start of the transition as the frontal boundary keeps highs only near 50 but then retreats northeastward as the next upper longwave trof approaches the southwestern states.
09Z Surface analysis places a cold front from Western Kentucky back through Southern Missouri and Oklahoma.
343 AM EDT Tue Mar 21 2017 Today-Wednesday: High pressure centered from the Gulf of Mexico across the Central Florida peninsula will continue to dominate the weather as we head into mid week.
Ridging aloft wedged into the region from the west and high pressure at the surface sitting south of the forecast area, will again promote warm conditions across the forecast area today. For tonight, a cold front will begin dropping southeast towards the Highway 82 corridor. Convection is expected to develop over the Mid- South region late this afternoon, and could brush portions of the CWA north of the Highway 82 corridor tonight as it shifts southeast while dissipating.
330 AM CDT Tue Mar 21 2017 Cold front had moved south into far northern Arkansas and Kentucky early this morning. The cold front will move farther south of the area tonight and high pressure will move into the area from the north. Britt High amplitude pattern will set up Wednesday with a longwave trof over the eastern U. and a ridge building over the Great Plains. The high will drift east-southeast through the day.
With the area of low clouds and fog pushing eastward a few of the lower clouds may push into VLD and ABY over the next few hours. High pressure south of the CWA stretched across the Florida peninsula from the Gulf into the Atlantic will continue to dominate today.
301 AM MDT Tue Mar 21 2017 Upper ridge will rebuild across the region today resulting in dry conditions. The ridge axis shifts slightly east on Wednesday resulting in dry conditions.
349 AM EDT Tue Mar 21 2017 An arctic cold front will drop south across the area late today and early tonight. High pressure will move southeast from the Canadian Plains across the area Wednesday night.
Main story for today will be cold front currently near the Ohio River which is forecast to sag southward into the cwa this morning, reaching the I-40 corridor by midday. Locations south of the boundary, which are already near 70 this morning, will have no problem reaching the 80 degree mark or even higher - while areas north of the front will be quite cooler. Have gone with a blend of most guidance for temps today in coordination with surrounding offices, but note that some guidance is substantially warmer south and cooler north than forecast will show. 5 C/km, and ample low level moisture with dewpoints in the low 60s, will allow MLCAPE to reach the 1500-2000 J/Kg range this afternoon. Showers and thunderstorms look to quickly diminish across the area tonight, with a cooler and dry Wednesday anticipated.
Very warm temperatures expected Tuesday followed by cooler temperatures for the latter half of the week behind the front. Warm advection coupled with downslope flow ahead of approaching cold front will result in temperatures well above normal in the low to mid 80s. Northwest flow aloft with upper trough over eastern Canada. Models show strong convergence along the front and strong upward vertical motion/divergence aloft and DPVA associated with short wave trough. The front will push south of the area on Wednesday with high pressure building in from the north. Guidance indicating temperatures about 15 degrees cooler on Wednesday with lingering cloudiness expected.
Northwest flow aloft will remain stagnant across the area with high pressure remaining at control at low levels. The ridge axis will continue to shift eastward through the evening hours, with low level flow becoming southerly/southwesterly this evening. In addition to visibility restrictions, this will help keep overnight lows considerably warmer than last night, with low to mid 50s inland and upper 50s to low 60s along the coast. The local area will remain on the southwest side of a gradually amplifying trough, with generally weak ridging at the surface through Tuesday. As a +PV anomaly moves through the Great Lakes and Northeast regions, surface ridging will spill into the eastern CONUS.