Aikyam-Lab/Synoptic-Bench huggingface dataset:
The more solid cloud cover associated with upper low are now departing to the east with some clearing behind this area. The upper low will move east of the area by sunrise this morning. The early morning cloud cover and breezy west winds will keep morning temperatures generally in the low to mid 40s. The increasing clouds should only reach about the Highway 2 corridor tonight, allowing northern zones to remain clear throughout the night with winds dying down to 5 mph or less. This will allow temps to drop into the mid-30s across the north while cloudy areas remain in the low 40s. Drier air aloft and upper level ridging will continue to bring dry, mild conditions with light and variable winds for Thursday and Thursday night.
1105 AM EDT Wed Oct 4 2017 High pressure will slowly shift south through tonight.
945 AM EDT Wed Oct 04 2017 High pressure will extend from the western Atlantic to the central Appalachians for the next few days. Previous discussion: 00Z upper air data indicate the sub- tropical/mid to upper level ridge has split, with one center over the VA's and another over the lower MS Valley. A shear axis, and embedded upper level perturbation now over the Carolinas, has developed in the break in the ridge. This shear axis will linger over the sern US, while a broad trough aloft develops/amplifies across sern Canada.
1103 AM EDT Wed Oct 4 2017 A cold front will approach the region from the northwest today and stretch out east-west across the area tonight.
1038 AM CDT Wed Oct 4 2017 Cold front has moved south into central and northeast Missouri as well as west central Illinois late this morning. Do not expect much more rise in temperatures over northeast Missouri and west central Illinois behind the cold front where there are low clouds. Temperatures over southeast Missouri and southwest Illinois will likely still get into the lower 80s. The upper ridge will breakdown somewhat and build south as an upper low moves east near the Great Lakes region. With extensive cloud cover expected again today, have trended twd the cooler guidance today, but warmer guidance tonight. However, with the front pushing south into the area, did trend slightly cooler for nrn portions of the CWA.
1157 AM EDT Wed Oct 4 2017 High pressure will maintain dry and warm weather this afternoon.
This, combined with upper ridging aloft will keep convection at bay and skies VFR. /issued 425 AM CDT Wed Oct 4 2017/ Early morning sfc analysis continues to show high pressure centered along the mid-Atlantic coastline ridging swwd through the wrn Gulf states, maintaining a light mostly erly low-level flow over the forecast area. Water vapor imagery shows ridging now in place from srn TX newd through the mid-South to the mid-Atlantic with the recent inverted trof which passed the region now off to our west. 00z U/A analysis shows the axis of better moisture associated with the inverted trof has moved wwd over the past 24 hours with drier air now encroaching the region from the east.
1254 PM EDT Wed Oct 4 2017 High pressure will maintain dry and warm weather this afternoon.
728 AM EDT Wed Oct 04 2017 High pressure will extend from the western Atlantic to the central Appalachians for the next few days. 00Z upper air data indicate the sub-tropical/mid to upper level ridge has split, with one center over the VA's and another over the lower MS Valley. A shear axis, and embedded upper level perturbation now over the Carolinas, has developed in the break in the ridge. This shear axis will linger over the sern US, while a broad trough aloft develops/amplifies across sern Canada.
A cold front has exited far southeast Wisconsin. VFR conditions to return from northwest to southeast later this morning as high pressure builds in behind the front. A strong 700 mb wind max across central Wisconsin will bring quick drying later this morning and afternoon behind the departing cold front. Cooler temperatures are expected later today and tonight.
1051 AM EDT Wed Oct 4 2017 High pressure still remains over the region today with mostly clear to clear skies and lower humidities.
Minor changes were also made to the high temperature forecast, lowering forecast values by a couple of degrees across far southeast Oklahoma.
723 AM EDT Wed Oct 4 2017 High pressure will continue to dominate our weather today with mild temperatures. A weak area of high pressure will build over the region Thursday, followed by another frontal passage Thursday night.
1015 AM EDT Wed Oct 4 2017 High pressure over the region will control the weather through the end of the week. ridging south over the local area into the Carolinas. Aloft, Broad upper ridge remains oriented from SW to NE from the western Gulf of Mexico into the Mid-south region. Highs again slightly warmer than yesterday as thicknesses creep up and airmass continues to moderate. High pressure across the area will slowly move south and east.
1056 AM EDT Wed Oct 4 2017 Water vapor loops highlight a sharpening, deepening mid-upper level trough across the Florida Peninsula and the eastern Gulf of Mexico. To the east of this upper trough, an inverted trough in the easterlies has slowed and sharpened over the Bahamas and central Cuba. The high tides of October and November are usually the highest predicted tides of the year. Pulley ridge northwest of the Dry Tortugas recently reported a significant wave height of 11 feet.
Temperatures this morning are in the low to mid 70s. Temperatures ranged from the upper 50s in Decatur County TN to the low 70's in the Memphis metro.
Highs will generally be in the lower to middle 80s today. Mod-Strong E-NE flow continues to the north of trof of low pressure over South FL with scattered to numerous showers continuing to stream off the Atlc over the land areas.
704 AM EDT Wed Oct 4 2017 High pressure over the region will control the weather through the end of the week. ridging south over the local area into the Carolinas. Aloft, Broad upper ridge remains oriented from SW to NE from the western Gulf of Mexico into the Mid-south region. Highs again slightly warmer than yesterday as thicknesses creep up and airmass continues to moderate. High pressure across the area will slowly move south and east.
Time height plots and much of the high resolution models suggest that the convection going on at this time will be moving west this morning, with a lull in the action by late morning over KCRP and KALI terminals, and possibly over the KVCT terminal too (did put a VCTS for KVCT this afternoon). With respect to the coastal flooding and rip current risk, will extend these out through Thursday afternoon and that may need to be extended even farther as the easterly flow continues and astronomical tides are on the high side to begin with.
732 AM EDT Wed Oct 4 2017 High pressure extending into the area from the northeast will shift slowly eastward over the next few days. Upper ridge centered to our NW. Upper energy rotating clockwise around the eastern periphery of the ridge will move WSW across our region today, but atmosphere too dry to support precipitation for our forecast area, with precipitable water values less than one inch and a strong cap noted on forecast soundings.
523 AM MDT Wed Oct 4 2017 Current surface analysis shows high pressure centered over far northwest SD. Upper level analysis shows weakened low pressure moving quickly east across northern MN. Another area of low pressure is located over NV, within western US trough. Mostly clear skies and light winds across much of the area early this morning has allowed temps to drop near or below freezing across much of the area, except for portions of south central SD. As high pressure moves east of the region, winds will become southeasterly, breezy by the afternoon across northeast WY and portions of western SD.
Tropical wave will shift westward across the southern Florida peninsula, keeping a tight gradient between this feature and ridge to the north.
1018 AM CDT Wed Oct 4 2017 Cold front continues to move southeastward into central IL this morning, currently near the Illinois River with winds shifting from southwesterly to northwesterly behind the front and dewpoints lowering from near 70 to near 60. Cold front still appears it will stall out near I-70 by this evening. A cold front currently extending from eastern Wisconsin to northern Missouri will sag slowly southward today. Given abundant cloud cover and showers, high temperatures today will be several degrees cooler than yesterday. Further southeast where less precip is expected, highs will once again reach the lower 80s south of the I-70 corridor.
830 AM EDT Wed Oct 4 2017 High pressure will maintain dry and warm weather today. Upper-level ridge will begin to flatten today as a front sags south through the Northern Great Lakes.
Upper ridge retrogrades west through the day today keeping the brunt of deep moisture from OK into western and northern AR. Given the low confidence nature of this precip, will not introduce vis or cig restrictions attm, but MVFR or potentially brief IFR possible in SHRA, especially if rainfall rates are moderate.
The axis of the large scale ridge over the Atlantic extends across the Florida Peninsula and into the central Gulf of Mexico. This ridge is combining with a trough moving across the eastern United States, strengthening the pressure gradient.
1033 AM EDT Fri Aug 4 2017 A cold front will move across the area late tonight.
629 AM CDT Fri Aug 4 2017 Awesome weather expected today with high pressure across the area. High pressure shifts to the east tonight allowing return southerly flow to develop. Temps will be held down in the lower 70s, and not much sunshine expected.
627 AM CDT Fri Aug 4 2017 Canadian high pressure will drift southeast of the region today, bringing mostly sunny skies and cool temperatures. Highs will range in the mid 70s, to the lower 80s.
Brisk northwest winds in the wake of departing low pressure will bring small craft advisory conditions today through about mid evening. The highest waves will be out toward open water. Strong low pressure will continue to push east of the area today. Moisture wrapping around the low will keep a mix of IFR/MVFR CIGS across the area into the early afternoon. Breezy northwest winds in the wake of departing strong low pressure will keep high temperatures today more typical of mid to late September than early August. We dry out tonight with clearing skies and low temps falling into the lower and mid 50s.
Readings are already down in the low to mid 50s across north central Illinois under a blanket of stratus clouds that will push farther southward near daybreak. The upper level low will lift northeast today, thus the core of the coldest air will skirt by to the north, but the clouds will remain trapped below the frontal inversion for a good portion of the day. The high will shift east of the area through the afternoon.
Continued very dry today and tonight then a slight chance of thunderstorms Saturday afternoon in southern Harney County as a weak upper low off northern California comes closer to the coast. Temperatures mostly steady, with a degree or two of cooling on Saturday as the ridge aloft weakens as the trough off the coast approaches. A bit more breezy in the afternoons at the higher elevations because of slightly more northwest flow aloft.
This scenario was present under a shifting synoptic pattern where more amplified Conus flow was becoming dampened, and elongated subtropical ridging was becoming re-positioned south of the international border.
1049 AM EDT Fri Aug 4 2017 A cold front will approach from the west late today and will weaken while crossing the region early on Saturday.
A cold front will move across the area tonight, followed by a wind shift to the north and overcast ceilings at VFR levels.
Compressional heating ahead of the front will allow some areas to hit the mid 90s this afternoon so did go a degree or so warmer area wide compared to our previous forecast. /issued 308 AM CDT Fri Aug 4 2017/ Blocking pattern over the wrn CONUS continues to keep us under nw flow aloft. Upper low over nrn MI will continue to dive sewd today, trailing a cold front into our region. Front is fcst to stall today, as the upper low quickly departs and the front loses its swd push.
1241 PM EDT Fri Aug 4 2017 Hydro A low pressure system strengthening near Green Bay this morning will track northeast through the day. An area of high pressure in the western plains states will build east today and Saturday. The mid to upper low was off to the west in Wisconsin while the dry slot has overspread the region at this time. thus cooler than normal temperatures are expected. The upper wave in here early in the week will move by, and leave a short wave ridge in control. Return flow will eventually help to push temps to near average levels in the lower 80s by Wed. With a deepening low pressure system tracking through the region today. Next a cold front will push through later this morning and early afternoon.
In the upper levels, broad ridging extends from east of the Bahamas west-southwest over the Bahamas and over southern Florida, while troughing extends south through the Mississippi River Valley. On the surface, high pressure ridges over southern Florida, while a weak stationary frontal boundary extends over northern Florida. Rain chances are expected to be on the low side on Friday and will be mostly concentrated along the Nature Coast. Temperatures are expected to remain seasonal or a couple of degrees above with daytime highs in the lower 90's inland and upper 80's near the coast.
With showers being on the dying trend as well, have also decreased chances in area coverage until into the early evening when the lee side trough moves over the CWA. GAH PREVIOUS SHORT TERM DISCUSSION: Synoptic Setup: A hot high pressure heat dome lies over the western third of the CONUS and southern British Columbia. A much cooler trough drops down from the Hudson Bay through the northern plains and great lakes.
631 AM CDT Fri Aug 4 2017 Cold front over southeast Missouri and southern Illinois will continue moving away from the area.
This is being manifest in the low clouds and fog that are affecting HBG and MEI. Convection has also developed in advance of the low with storms beginning to encroach upon the HBG vicinity. Elsewhere, a cold front will begin affecting GLH, GWO and GTR by noon with a more northwesterly wind and TS in the vicinity. A stout mid level wave over the Upper Mississippi River Valley will force a surface cold front into northern portions of the forecast area by this afternoon.
637 AM CDT Fri Aug 4 2017 The cold front which pushed through the CWA last night has allowed northwest flow to take hold. Friday night, the high will push off to the east and Southerly flow will return. The main focus looks to be the warm front which is expected to come through the region during the late afternoon and evening with another cold front not far behind. The high moisture transport and PW levels will make any thunderstorms very efficient rain makers.
1245 PM EDT Fri Aug 4 2017 A trough will remain near the coast through the weekend. A cold front approaching from the northwest will be near the forecast area tonight and Saturday.
Strong low pressure nearing the Lake Huron area. Moisture wrapping around the low will keep MVFR CIGS across southeast Wisconsin into the afternoon. Brisk northwest winds in the wake of departing low pressure will bring small craft advisory conditions today through about mid evening. The highest waves will be out toward open water. Strong low pressure will continue to push east of the area today. Moisture wrapping around the low will keep a mix of IFR/MVFR CIGS across the area into the early afternoon. Breezy northwest winds in the wake of departing strong low pressure will keep high temperatures today more typical of mid to late September than early August. We dry out tonight with clearing skies and low temps falling into the lower and mid 50s.
730 AM EDT Fri Aug 4 2017 Two distinctive factors impacting todays weather across the forecast area, stalled frontal boundary across south Georgia and the cold front approaching from the northwest. Not a whole lot of upper support across the north as the main short wave remains well north of the region, however the associated cold front is still expected to move into north Georgia by late in the day. A stationary front across the n to central GA area and the passage of an upper level trough will have brought much diminished shower and storm chances to the area Saturday night.
631 AM CDT Fri Aug 4 2017 A cold front over central sections of the state will continue to move slowly south. High pressure will then provide a decrease in clouds with time. Water vapor imagery this morning show the major players quite well, mainly upper ridging over the west and downstream troughing centered over the upper midwest with an upper low centered over northern Wisconsin. Surface reflection is centered to the east of the upper low with the associated cold front located from north of Mena to near Conway to near Jonesboro. High pressure builds into the north this afternoon with some cooler and drier air filtering in. As the high builds into the Tennessee Valley tonight, the cooler and drier air will filter further south.
WV imagery indicates an upper level trough of low pressure tracking eastward across the Great Lakes while a west-northwest flow aloft prevails across the Western High Plains. Near the surface, broad area of high pressure is drifting slowly east across the Central Plains. Northwest flow will be found above western Kansas with an upper level low over the Great Lakes and an upper level ridge over the Desert Southwest and Mexico. Towards the surface, a dome of high pressure will slide east of the area this morning shifting winds from the northeast to south southeast by this afternoon. As for temperatures, highs today are expected to rise into the low 80s with lows tonight dipping into the low to mid 60s.
The cold front was just entering the northwest border of our region as of 08Z.
1017 AM EDT Fri Aug 4 2017 A trough will remain near the coast through the weekend. A cold front approaching from the northwest will be near the forecast area tonight and Saturday.
942 AM EDT Fri Aug 4 2017 A cold front will bring strong to possibly severe thunderstorms this afternoon and evening. Cooler weather for this weekend.
Current surface analysis places broad high pressure over the northern and central plains. Upper level analysis places a ridge over the Pacific and low over western Wisconsin. Northwest flow remains over our area, though a compact low/trough sliding through the flow is now passing over Alberta. This will result in a bit warmer temperatures, though still below average. Upper trough continues its approach with chances for showers and thunderstorms increasing overnight over western/southern portions of the area. Instability remains on the lower side over our area so any thunderstorms that develop should remain tame. Chances for precipitation remain through the weekend as trough settles over the area and opens keeping broad cyclonic flow over the area.
Two distinctive factors impacting todays weather across the forecast area, stalled frontal boundary across south Georgia and the cold front approaching from the northwest. Not a whole lot of upper support across the north as the main short wave remains well north of the region, however the associated cold front is still expected to move into north Georgia by late in the day. A stationary front across the n to central GA area and the passage of an upper level trough will have brought much diminished shower and storm chances to the area Saturday night.
No changes to the marine package, except the lowering of rain chances a bit.
An upper level low pressure system digging across the Great Lakes today will help to advance a surface cold front across the area. The cold front should push south of the region by this evening with a cooler and drier airmass filtering south. Dry and cooler conditions will continue into Saturday with seasonably low humidity.
Hot conditions are expected again Sunday over southern and western Oklahoma ahead of a cold front that will arrive in northern Oklahoma by afternoon, keeping temperatures down there.
No changes to temp forecasts with highs into the lower 80s near the east coast and the mid 80s for the interior, a few degrees above normal for early November.
Temperatures remained above freezing throughout western Nebraska, mainly in the upper 30s. A cold front had pushed through most of Montana into northern Wyoming. A closed upper low will move from southern Saskatchewan into southern Manitoba today, as the upper trough moves across the Dakotas. This will drive the cold front southeastward today. For tonight, the cold front will move swiftly southeast overnight, exiting Nebraska, and moving into northwest Kansas and northeast Colorado. The highest pops from 30 to 40 percent. Lows tonight near 24 at Gordon and Valentine, to the lower 30s in southwest Nebraska and the far eastern zones.
804 AM EDT Sat Nov 4 2017 Dry conditions can be expected until a warm front returns shower chances later today. Weak ridging under the passing wave, in the warm sector, will keep this portion of the area mainly dry.
An upper level trough remains over the Pacific Northwest this morning. Today should be dry in the lower elevations with increasing clouds through the day. By the afternoon, a warm front will begin to cross the Cascades and will bring additional snow showers to the Washington Cascades, the Yakima and Kittitas valleys and the Simcoe Highlands tonight. The rest of the area will see precipitation increasing after midnight as the cold front crosses the Cascades overnight. Precipitation will be lighter from the Columbia Basin eastward but the lower elevations could get a dusting of snow Saturday night and Sunday morning.
1206 PM EDT Sat Nov 4 2017 Dry conditions can be expected until a warm front returns shower chances later today. Warm front will push northward through the day today, but at this point, very little precip is noted on radar, save for where the deeper moisture resides over the terrain. Weak ridging under the passing wave, in the warm sector, will keep this portion of the area mainly dry.
The best chance of any precipitation will be in the high southern Sierra of Inyo County this weekend. An elongated positive tilt trough runs from the central Canadian prairie southwest through the northern Rocky Mtn states, northern California eventually terminating over the eastern Pacific around 30N 140W this morning. A stronger northern stream trough will stay well north of our area with models in good agreement depicting a series of weak impulses passing overhead embedded in a southern branch of the jet stream. Models continue to back off on the amount of precipitation spilling over the southern Sierra Crest into the high elevations of Inyo County this weekend.
Road surfaces are still ice covered however so a SPS will remain in place through the morning for poor travel conditions until we can get some peeks of sun and slights warmer temperatures. BUFKIT soundings remain mostly saturated in the low levels into tonight as could be expected - with varying thickness from 3 to 6kft.
1045 AM EDT Sat Nov 4 2017 A warm front will approach the area today with increasing clouds and afternoon rain showers. Highs Sunday will be in the 60s to the lower 70s. Showers were already developing early this morning over western IL and eastern IA in an area of frontal lift ahead a developing low pressure area over MO. Have increased rainfall amounts with the highest values from Ft Wayne east and south to around 2 inches.
1230 PM EDT Sat Nov 4 2017 A weak cold front will move across the area early today before stalling. A strong area of high pressure will follow as it ridges down the east coast and into the Carolinas.
Highs will be in the middle to upper 30s northwest to the lower to middle 40s southeast. On Sunday, a cold front will move through the region. Temperatures should fall into the lower to middle 30s in north central during the afternoon.