Aikyam-Lab/Synoptic-Bench huggingface dataset:
1045 AM EDT TUE MAY 31 2016 The morning Cape sounding showed some drier air in the low levels compared to previous days. RAP model shows mid level trough axis has shifted just east of the area resulting in some slight warming aloft (-9C at 500 mb). Weak low level ridge axis is located across Lake Okeechobee with light west flow across most of the area.
Temperatures will run about 5 degrees warmer than yesterday under full sun. Temperatures will be warmer today and Wednesday as a strong upper ridge along the west coast slides into our area. The highest temperatures will be around 80F today and near 90F Wednesday, including the Treasure Valley.
An upper level ridge will persist over the Pacific Northwest today, bringing mostly sunny skies and warm temperatures to southwest Washington and northwest Oregon.
645 AM CDT TUE MAY 31 2016 Main concern is heavy rainfall potential today and tonight as the surface cold front drops southeast across the area. The effective cold front is likely to lag and be situated across central Kansas by early afternoon and will become another focus for convection.
The highest probability will shift southward (KLAW/KSPS) with time, but chances of -TSRA will remain even across central sites through the overnight. Any surface boundary/effective cold front is expected to only make slow southward progress due to relatively weak and nearly boundary- parallel flow aloft.
703 AM EDT TUE MAY 31 2016 A dry ridge of high pressure will dominate the region through midweek under a mainly clear sky.
Remnants of Bonnie off the Carolina's coast will continue to move slowly to the north/northeast this afternoon, as an mid to upper level low near the Bahamas slowly drifts northward. At this same time, high pressure will also remain nearly stationary over the Gulf of Mexico. However, the timing of the low ceiling and vis should be shorter than 30 minutes. /issued 408 AM EDT TUE MAY 31 2016/ The area remains under the influence of an upper level trough, which can be identified on latest water vapor satellite imagery extending across the state and into the southwest coastal waters. And just like in the previous couple of days, the sea breeze boundaries will again act as focal points for convection to develop, while the influence of the upper trough may enhance overall atmospheric instability.
940 AM PDT TUE MAY 31 2016 High temperatures will rise throughout the week as high pressure builds aloft.
609 AM CDT TUE MAY 31 2016 An upper level low currently moving east/southeast across eastern Montana will continue to slide across the Northern Plains today dragging a trough axis through the Central Plains. At the surface, low pressure was centered over southeast North Dakota with a trailing cold front extending south from the low across eastern South Dakota and into central Nebraska. Will continue to carry chances along the cold front as it pushes eastward through the CWA today and into this evening.
Windy conditions will continue through night as a cold front approaches. A few light showers will develop after midnight across the area and the low pop forecast looks fine. looking at the GEFS plumes for Memphis and not a single ensemble member drops temps below freezing for the next 8 days. Latest surface analysis depicts an area of high pressure just off the Atlantic seaboard, with low pressure located over the Plains, with a warm front now located well north of the local region. Meanwhile, H5 analysis depicts slight southwest flow aloft over the region, with a ridge of high pressure off the east coast and a cutoff low just along the Oregon/Washington coast. Overnight lows tonight will be in the lower 60s, with Thursday highs again near 70.
Cold front has entered eastern 2/3 of Oklahoma Panhandle, ahead of schedule. Backdoor cold front shift surface winds to east and southeast by late morning or early afternoon. After our record breaking warm temperatures today we will see much cooler temperatures on Thursday. The cooler temperatures will be the result of a slowly intruding cold front from the northeast. This cold front is rather shallow so it's going to struggle getting on top of the Caprock but it could filter down the river valleys. Thursday night we will see temperatures fall below freezing across the area while isentropic lift brings ample low level moisture into the southeastern Panhandles. This lift could be enough to spark off some light freezing rain for the southeast.
00 UTC surface analysis shows a NE to SW oriented ridge of high pressure across the Western Atlantic between the East Coast of the US and Bermuda. Aloft, vapor imagery and 500 mb analysis shows a ridge building across the Florida Peninsula. Temperatures should only fall into the low to mid 50s.
A cold front entered northwest Oklahoma a short time ago, and is expected to continue to move south across the rest of Oklahoma and into Texas. As the front passes, the warm weather and south winds will change to much cooler conditions with a north breeze. A strong cold front will enter far northern Oklahoma around 6 pm this evening.
653 PM EST Wed Jan 11 2017 Another surge of warm, moist air associated with an Ontario cyclone will drag rain into NY and PA late tonight and Thursday.
After our record breaking warm temperatures today we will see much cooler temperatures on Thursday. The cooler temperatures will be the result of a slowly intruding cold front from the northeast. This cold front is rather shallow so it's going to struggle getting on top of the Caprock but it could filter down the river valleys. Thursday night we will see temperatures fall below freezing across the area while isentropic lift brings ample low level moisture into the southeastern Panhandles. This lift could be enough to spark off some light freezing rain for the southeast.
620 PM EST Wed Jan 11 2017 A warm front pushes north on tonight.
The low-level jet that has been in place, wavering a bit each afternoon, will still be around late tonight but not as strong/35 to 40 knots. Temperatures should be a bit warmer tonight as well with the cloud cover around and some turbulent mixing taking place. Thicker fog, if it develops, will drop temperatures quickly as there is still plenty of dry air in the low-levels to mix down, so pockets of colder than forecast lows may occur. The pressure gradient will not be as tight on Thursday as it was today and the low-level jet will not be as strong so even though we will have some wind gusts, expecting them to be along the lines of upper-20s mph/breezy.
A ridge will begin building over the PacNW. Patchy freezing fog is expected in west side valleys early tomorrow morning, and during the next several mornings due to stable conditions and moisture availability.
Upper trough amplifies into central CA during the day on Thursday.
708 PM EST Wed Jan 11 2017 A warm front pushes north tonight.
Thus, overnight lows once again in the lower to mid 60s can be expected.
713 PM EST Wed Jan 11 2017 A cold front will slowly approach from the west tonight through Thursday and will cross the region Thursday night.
With an Arctic high pressure building over the region on Thursday, winds should fall below 10 mph with wind chills improving by 18Z. However with the Arctic high pressure over head Thursday night, low temperatures should plummet to -15 to -25 degrees below zero. Return flow does develop on the backside of the high, but likely too late in the night to make much of a difference.
Winds will decrease throughout the day as another area of high pressure builds into the Northern Plains.
Adjusted temperatures a degree or two higher through the night and early morning in SW VA along the frontal boundary as warmer air is advected in. went with a Wind Advisory through 10 AM Thursday morning for the higher elevations in the east TN mtns. Chattanooga Airport, TN 53 66 53 68 / 10 10 10 20 Knoxville McGhee Tyson Airport, TN 52 64 52 65 / 10 10 20 30 Oak Ridge, TN 51 64 54 64 / 10 10 30 30 Tri Cities Airport, TN 44 64 48 61 / 10 10 30 40 TN.
834 PM CST Wed Jan 11 2017 High pressure was centered off the east coast with a stalled front from the Great Lakes to Central Plains. Even with overcast skies, rain chances look low through the rest of the night with a warm front well to our north. mostly in the lower 60s. In addition, believe some showers and or drizzle could arrive at CKV late in the forecast period (after 23z) as a cold front moves in.
/Issued 241 PM EST Wed Jan 11 2017/ Frontal boundary just north of the state is beginning to move Northward as a warm front and pulling the deeper moisture northward with it. Surface ridging from the Atlantic is building in underneath this exiting frontal system keeping us in very warm southerly flow.
935 PM EST Wed Jan 11 2017 A cold front will slowly approach from the west tonight through Thursday and will cross the region Thursday night.
A trough moving down the west coast will bring a period of unsettled weather to northern Arizona through the weekend.
Expect a fairly strong inversion to develop overnight with the deep high pressure ridging across the area. Deep, but light E/ESE flow with deep layer ridging across the area.
A low pressure system moving south along the west coast will bring one final round of precipitation to mainly southern and central Utah to end the week. High pressure aloft will settle over the region for the weekend.
415 PM MST Wed Jan 11 2017 Currently across the Tri-State region there is a cold front continuing to push south through the area. Temperatures will drop into the low teens to low 20s over the region tonight and winds will shift slightly at less than 10 mph. The upper level flow shows an approaching low pressure system in the western CONUS. Thursday brings dry conditions as well, with increasing cloud cover during the day with the approaching trough in the western states.
With the main precipitation forecast to be across the southern areas, light dusting of snow will be possible in the higher peaks by Thursday morning.
Warming trend continues with temperatures tonight bottoming out in the lower 50s.
A strong cold front will begin to push into the area tonight, moving to around the I-44 corridor by 12z Thu and pretty much through the whole CWA by 18z. Aloft, a deep trough will be in the developing stages in the western U. with a broad southwesterly flow aloft to the east of the trough into the central U. Models are still showing differences with how far south the below freezing surface temperatures get, with the GFS still wanting to keep that along and north of the Plateau.
Temperature inversion around the 850mb to 750mb level will trap moisture and subsequent cloud cover in the low levels under 7000 ft. Ridging and mid-level dry air will remain over the region Thursday.
Low pressure currently over central Saskatchewan. As forecast, southwest winds are on the increase over the Northern Plains as the low approaches from the north. Across eastern Alberta and far western SK, gusts to around 40KTs are being observed on the back side of the low. However, should Canadian observations show the higher gust potential of the ECMWF/GFS, wind gusts in excess of 45 kts may be possible and true ground blizzard conditions could result.
944 PM CST Wed Jan 11 2017 Cold front has entered northeast Oklahoma and will continue moving southeast overnight, a bit ahead of schedule. A few light showers may develop along the front later tonight, so left the low pops in the southeast part of the area as is.
Latest surface analysis depicts an area of high pressure just off the Atlantic seaboard, with low pressure located over the Plains, with a warm front now located well north of the local region. Meanwhile, H5 analysis depicts slight southwest flow aloft over the region, with a ridge of high pressure off the east coast and a cutoff low just along the Oregon/Washington coast. Overnight lows tonight will be in the lower 60s, with Thursday highs again near 70.
In the middle and upper levels, (700-200 mb), latest available IR imagery as of 900 pm overlaid with model streamline analysis, like 24 hours prior, continues to depict a broadly low amplitude cyclonic middle and upper air pattern encompassing most of the CONUS, except a smaller scale regional scale middle and upper anticyclone over the Florida Peninsula. Overnight, a steady state ridging pattern will govern the weather across the Keys, with breezy to windy conditions continuing across the islands and adjoining waters, due to the 1028-1030 mb western periphery of the aforementioned stronger ridging remaining anchored across North Florida.
Although a bit slow, the HRRR continues to have a good forecast, and now it brings the cold front through Oklahoma City about 1 AM. Additionally, temperatures in the lower 20s are now entering the southern half of Kansas on 10-15 kt and gusty north winds.
A cold front is expected to move through the area later tonight into Thursday morning. An additional focus for precipitation may be after 120600Z, when a cold front is expected to move into the northwest zones, reaching the central zones around daybreak. Widespread fog has developed across the area ahead of warm front to the south. Temperatures should start to tail off after 120600Z over the northwest zones in the wake of cold front. Will keep rather high PoPs in the forecast for Thursday as cold front continues to push through the area.
959 PM EST Wed Jan 11 2017 A warm front pushes north tonight.
416 PM MST Wed Jan 11 2017 Current surface analysis shows arctic front south of the forecast area, with high pressure centered over northern MT.
The chances will quickly drop off late tonight but with some dendritic temperatures in the lower 1 to 2 km some very light snow could linger into Thursday morning.
Moderate to strong southwest flow in the lower atmosphere will persist as well, with surface gusts up to 35 mph this afternoon/evening.
Unseasonably warm conditions will continue into Saturday with high temperatures likely a degree or so warmer than will be the case this afternoon. There should be enough moisture in the lowest layers of the atmosphere (at least south of I-20) to instigate some patches of fog, particularly down in southeastern MS along the Highway 98 corridor.
High pressure east of the Ozarks will continue its eastward progression through tonight as a flat upper ridge moves over the center of the country. Developing low pressure over eastern Colorado will begin to shift east as well with a tightening surface gradient allowing for breezy conditions today. Breezy winds will continue into this weekend as a dry cold front approaches the region.
1013 AM PDT Fri Oct 28 2016 A Pacific low pressure system will bring A few showers today, mostly to northern areas of SoCal.
Precipitation will taper off tomorrow afternoon as the energy exits and we see a quick transition to height rises as ridge builds back in from the SW. The highest peaks of the Beartooth Absarokas should see 5-10 inches and up to an inch of water equivalent. Main story is the widespread rainfall for the lower elevations beginning this evening in our west and persisting through midday Saturday in our southeast.
SHORT TERM (Tonight through Saturday Night): Upper low over the northwestern Gulf still headed in our direction but seems to be having difficulty moving into ridge which covers much of TX. Overnight, the aforementioned inverted trough aloft approaches from the east, moving through the offshore waters and clipping the SE CWA. NAM still a bit quicker moving the trough vs. As the day progresses Saturday, the trough axis moves inland over Mexico, mainly south of the area. There is a bit more moisture on the backside of the inverted trough (per IR satellite), as would be expected, so some of this moisture will continue to overspread the southern counties and produce some widely scattered showers by afternoon. Highs Saturday a couple degrees cooler vs.
1233 PM CDT Fri Oct 28 2016 Very mild and warm today with southerly winds and ridging aloft. While there is quite a bit of cirrus, it will probably be thin enough to allow plenty of sunshine, along with slightly warmer 850 mb temps than yesterday. Highs today should easily reach the lower 80s, with near record warmth expected.
320 PM EDT Fri Oct 28 2016 High pressure sliding east equals a warm up for the area this weekend.
421 PM EDT Fri Oct 28 2016 High pressure returns tonight through Saturday.
143 PM EDT Fri Oct 28 2016 Developing coastal low pressure over southern New England will produce occasional rain and snow across most of Vermont today with scattered precipitation over northern New York. Little overall change in the forecast from previous versions as we head into the weekend with the main feature being weak low pressure passing north of the Canadian border on Saturday.
116 PM EDT Fri Oct 28 2016 High pressure will prevail through the weekend.
Temps in most locations have climbed into the upper 70s/near 80F thus far, and will continue to increase into the lower/mid 80s given a few more hrs of latent heating.
Temperatures will remain relatively mild for this time of year, with no widespread freezing conditions expected.
313 PM CDT Fri Oct 28 2016 Dry and mild conditions will persist into the weekend as a broad mid- level ridge shifts eastward over the area. These breezy southerly winds will support decent warm-air advection overnight with low temperatures only dropping into the lower 60s. Another unseasonably mild day is expected on Saturday with temperatures rising within a few degrees of record conditions with highs in the low/mid 80s. These southerly winds will begin to diminish during the mid/late afternoon hours as a cold front moves into central Kansas. Period starts off with a cold front moving southeast across the CWA Saturday night as a upper level trough moves across the Northern Plains.
The high will settle south into the Carolinas on Saturday maintaining the onshore winds for se Ga/ne Fl. Cirrus canopy will continue to thin tonight as upper ridge builds over the se states.
1241 PM CDT Fri Oct 28 2016 A progressive pattern across North America will result in a weak area of low pressure moving across the upper Midwest and then a high building across the northern Plains today into tomorrow. Rain chances will be minimal across the Northland given the warm frontal zone will be well to the north of the international border, but expect abundant cloud cover as low- level stratus persists while mid/high level clouds move across the region aloft. Overnight cloudy skies will persists in the northwest flow behind the low. Showers possible north of the Iron Range as the cooler air aloft introduces a bit of instability. Cooler Saturday but temperatures still on the mild side of normal. Light northwest winds as high pressure will be building in from the west through the day.
140 PM PDT Fri Oct 28 2016 A Pacific low pressure system will continue small chances for light showers this afternoon.
354 PM CDT Fri Oct 28 2016 (Tonight and Saturday) The upper level ridge over the Southern Plains and Texas will remain in place tonight and Saturday, with quiet weather expected for our area. Until then, a very dominate upper ridge will maintain dry conditions, along with temperatures above seasonal normals. Models this cycle continue to bring an upper trough into the southern Rockies by late week; the resulting southwest flow aloft, ahead of this trough, will enhance rain chances for mid to late week. In addition, the GFS and ECMWF indicate a weak cold front may push into our counties, from the north, late week; this too will enhance rain chances.
255 PM EDT Fri Oct 28 2016 In the wake of the cold front exiting off the coast, high pressure will build south east into the area in the through the weekend.
537 PM EDT Fri Oct 28 2016 Dry weather can be expected today and Saturday as high pressure builds across the area.
302 PM EDT Fri Oct 28 2016 A warm front will move across the forecast area Saturday.
249 PM CDT FRI OCT 28 2016 Warm and windy for tonight and into tomorrow morning as the Midwest is between an exiting high pressure, and a developing storm system well to the northwest. Saturday night will see low pressure advancing across Illinois which will help pull a cold front south into central Illinois.
Weak flow and mean ridging is present across the southern Plains extending into the Southeast.
Over the mountains cloud cover will increase through the evening as an approaching trough will bring a slight chance of showers to the mountains mainly north of I-70 and the Park range. The plains will stay dry but increasing clouds overnight will keep low temperatures in the lower 50s. Temperatures for Saturday will be cooler with passage of a weak front with highs in the mid 70s and 40s in the mountains. (Saturday the strong high pressure ridge responsible for the dry and unseasonably warm weather of the past several days is projected to weaken midweek with the passage of a weakly organized upper trough tethered to a closed low over the nrn Baja Peninsula.
110 PM EDT Fri Oct 28 2016 A dry cold front will move offshore today, followed by high pressure through the weekend with above normal temperatures.
342 PM EDT Fri Oct 28 2016 High pressure will prevail through the weekend.
Water vapor satellite imagery loop shows a large low pressure in the NE Pacific centered near 46N/140W. The low will move south this afternoon and back flow aloft to the south, which will result in increasing high cirrus clouds over NE Oregon this afternoon. However, low stratus clouds will remain over the Lower Columbia Basin and the Kittitas valleys with patchy fog and local areas of dense fog persisting through this morning. The fog in these areas should improve allow visibilities to increase this afternoon with the low clouds evaporating around the edges through this afternoon.
310 PM CDT Fri Oct 28 2016 18Z surface data has in inferred warm front running from roughly KMCW to a little east of KSTL. A cold front will enter the far northwest area just prior to sunrise. On Saturday, the cold front will slowly move south through the area. Cooler, drier air advecting into the area on north winds behind the dissipating precipitation band should allow temperatures to cool into the mid and upper 40s north, while the south holds in the mid and upper 50s.
Upper level ridging will amplify across the southeastern CONUS today behind an exiting trough.
105 PM CDT FRI OCT 28 2016 Thick cirrus in many places over Central Illinois impeding the warm up this morning as the high pressure ridge axis slips to the east. Return flow is advecting some warmer temperatures into the region, and winds will continue to increase through the day and into the evening as the pressure gradient tightens west of the ridge. High pressure will continue to move to the east today while a low pressure area moves across the northern US into the Great Lakes region by tonight. The gradient between this high pressure and low pressure, and associated cold front, will cause surface winds to increase today with gusts increasing to over 20mph by this afternoon.
This will end tonight as another cold front moves into the area.
Otherwise, the very warm air off the surface will become better mixed as winds all become west northwest behind trough. The warmth will not last long as much cooler temperatures are expected on Saturday. While the moisture aloft is there, a Canada highs pressure will filter drier air in the lower levels.
332 PM EDT Fri Oct 28 2016 Low pressure deepening in the Gulf of Maine will continue to move rapidly east tonight followed by high pressure moving over the area late tonight and early Saturday.
300 PM EDT Fri Oct 28 2016 A dry cold front will move offshore today, followed by high pressure through the weekend with above normal temperatures.