Aikyam-Lab/Synoptic-Bench huggingface dataset:
348 AM CDT Sat Mar 24 2018 Snow extends east of the James valley at 3am, with Dual Pol supporting snow as the main P-type, though profiles do lose ice in the dendritic growth zone as the morning progresses from west to east, but with loss of forcing any additional freezing drizzle will be very light. Thankfully temperatures are hovering around freezing so despite stratus, late March sunshine should be good enough to get us into the mid 30s.
416 AM CDT Sat Mar 24 2018 Fog and freezing drizzle this morning, and a potential wintry mix tonight highlight the short term forecast. Freezing drizzle will continue across central North Dakota this morning with ice loss in the column and low level omega. Extended most of the Winter Weather Advisory through 16 UTC for a longer duration threat of freezing drizzle per 07 UTC RAP soundings. If the warmer edge of guidance verifies, which is possible given the strong surface wind field and cloud cover, freezing rain/drizzle potential will be limited. However, if the cooler 00 UTC guidance consensus verifies, there will be greater potential for freezing rain/drizzle. Drizzle or freezing drizzle is possible as the column saturates, with a wintry mix thereafter of rain,freezing rain, and snow.
High pressure to end the weekend and start the next work week, with a warming trend. This gives concerns to banded snow occurring once again, but without the benefit of cold air generation of a digging upper level low/dynamic cooling. The NAM is definitely more aggressive with the snow potential and the lower levels of the atmosphere staying colder through the process. Then the temperatures will slowly edge above freezing Saturday which will make snow accumulations more difficult. Late afternoon snow accumulations will be most prolific in the mountains where temperatures are closer to freezing.
Low temperatures will be in the lower to middle 20s.
High pressure near Hudson Bay was advecting dry air into the region along with an easterly flow off of Lake Superior. Upper level ridging will move over the region tonight, while the high pressure meanders around northern Ontario. Farther east, the high pressure will result in a dry forecast and a mostly cloudy sky. While the upper ridging largely remains over the region on Saturday, some vorticity moves through southern Minnesota. The vorticity departs by mid morning with the ridging aloft, and at the surface, taking control for the rest of Saturday. High pressure over eastern Canada will still dominate the Great Lakes on Sunday. Sunday's highs will be in the lower 40s.
424 AM EDT Sat Mar 24 2018 Water vapor imagery and RAP analysis show a ridge extending from the Plains to central Canada and a trof over eastern N America. Not expecting any significant snowfall amounts at this time, but some models are cooler which could turn precip to mostly snow mainly across the N. Even so, with high temps in the 40s on Mon and Tue, and lows around freezing Mon night, do not expect any significant snowfall accumulations. Will certainly see increased river levels with the two warmer days, higher humidity, and rain, but at this time it doesn't look like anything impactful. Ahead of an approaching low pres trof, winds may reach up to 30kt at times over eastern Lake Superior Mon/Tue. Behind the trof, winds should be under 20kt on Wed.
Guidance is showing the closed low move on shore with an occluded front moving towards the coast. Satellite is suggesting that there is a decent amount of moisture with this low and that the low is pretty well defined at the moment. The precipitation will drift eastwards during the afternoon hours as the low gradually weakens. The impacts to Siskiyou pass and areas east of Josephine county should be minimal as the low weakens and the temperatures warm in the afternoon resulting in higher snow levels and more slushy snow. As for Sunday morning, the trough axis will be on the east side and high pressure will start to build in it's wake.
604 AM EDT Sat Mar 24 2018 An upper level trough of low pressure will push south across the area today.
The upper level trough to our east will continue moving off the east coast as upper level ridging builds in. Northwest flow at the mid and upper levels will continue through the short term with a trough to the east and a ridge building into the western Gulf of Mexico on Saturday. High pressure at the surface centered over the CWA today will be situated east of the area over the Atlantic by Saturday. Highs will range from the mid 70s to the lower 80s. As the front sinks southward into the CWA and a wedge builds into the southeast, Sunday night will be a littler cooler with lows in the upper 40s north to lower 60s near the coast.
An upper level low currently moving across the central plains will send a weak cold front into the region tomorrow.
An upper level trough sitting off the Pacific Coast will begin its slow swing into the region today, bringing still more precipitation to the region this weekend. Today's focus of precipitation will fall across the west central Idaho mountains and along the Nevada border; however, as the trough axis moves across the region Sunday, most areas will see a flake or two. With a cold pool aloft and an unstable environment associated with the upper level trough axis, a slight chance for afternoon thunderstorms Sunday cannot be ruled out and has been added to the forecast. Northwest flow will follow the trough as it exits early in the week. The best chance for precipitation comes late Tue/Wed as a weak trough passes north of the area.
A weak cold front will move into the area Saturday morning, turning winds from south/southwest to west, then northwest at most sites. A weak cold front will move south to near I-20 Saturday morning and stall, with a dryline mixing east across eastern portions of the Concho Valley and Northern Edwards Plateau by afternoon. Temperatures west of the dryline are expected to reach the lower 90s Saturday afternoon, with San Angelo likely to tie or just break the standing record of 93 degrees. Elsewhere, temperatures will be a little cooler north of the front, with highs mainly in the mid and upper 80s across the Big Country and in the upper 80s to around 90 over southeast sections.
500 AM CDT Sat Mar 24 2018 A cold front will pass through Oklahoma this morning shifting winds to north. /issued 309 AM CDT Sat Mar 24 2018/ A weak cold front passing through Oklahoma this morning will bring a bit milder and drier air mass, at least for a day. During Sunday the upper pattern changes such that Oklahoma is open to several waves from the southwest originating from a large scale trough over the southwestern U.
Winds will increase through the period as a cold front moves into the state late in the period. A weak cold front will move through the state on Saturday. This frontal boundary will stall, then will start to move northward as a warm front on Sunday.
In the wake of the light snow freezing drizzle and or reduced visibilities down to around 3 miles is occuring across much of central and northeastern ND. Will continue winter weather advisory with travel impacts from slippery roads as road temps remains just below freezing across the region.
A repeat of overcast skies is expected Sunday morning while H5 southwest flow over the SW/Mexico strengthens ahead of a western CONUS trough digging south along the coast.
630 AM EDT Sat Mar 24 2018 Strong high pressure over Ontario will maintain a stout NE gradient through the period. Extensive surface ridging will remain in place across the area both today and Sunday as a large high pressure system builds expands into southern Quebec in the wake of aforementioned upper low pressure over the northeast CONUS (as it shift southeast over the western Atlantic ocean and become cutoff from the northern stream storm track).
High pressure will shift further east of Florida through tonight with upper ridge pivoting east of the area on Sunday.
430 AM EDT Sat Mar 24 2018 Under clear skies and light northeast winds of 5 to 10 mph, temperatures are in the lower to mid 60s on most island communities. Surface wise, an expansive region of high pressure is centered over the northern portion of the Sunshine State with a ridge reaching both into the Atlantic ocean and Gulf of Mexico. Little change in the overall large scale pattern with a large, strengthening and sharpening mid and upper level ridge axis moving into the Eastern Gulf of Mexico.
319 AM CDT Sat Mar 24 2018 Breezy and mild conditions prevail this morning ahead of a cold front that stretches across northwest OK into the TX panhandle. The front is expected to stall near the Red River tonight, and then begin to lift north as a warm front Sunday.
323 AM EDT Sat Mar 24 2018 A trough of low pressure will drop southwest through the region today and will push into southern New England overnight.
436 AM EDT Sat Mar 24 2018 High pressure will move off the Southeast Coast today with a warm frontal boundary developing south of the area. The boundary will be south of the area on Sunday with high pressure wedged into the forecast area from the north.
146 AM EDT Sat Mar 24 2018 High pressure will move off the Southeast Coast Saturday with a warm frontal boundary developing south of the area. The boundary will become diffuse and stall to the south on Sunday as high pressure wedges into the forecast area from the north.
Weak high pressure will be in control of the area today. Low pressure will move across the southeast states tonight.
417 AM EDT Sat Mar 24 2018 Expansive high pressure centered over Hudson Bay will nose south across our region this weekend.
Winds will shift to the northwest through the day and become gusty behind a cold frontal passage. /Issued 319 AM CDT Sat Mar 24 2018/ Breezy and mild conditions prevail this morning ahead of a cold front that stretches across northwest OK into the TX panhandle. The front is expected to stall near the Red River tonight, and then begin to lift north as a warm front Sunday.
250 AM EDT Sat Mar 24 2018 An upper level trough of low pressure will push south across the area today.
Scattered thunderstorm activity is continuing around the region resulting in brief periods of heavy rain with periods of snow at the higher elevations when they pass. Overnight lows tonight will be slightly cooler as skies clear, but will remain unseasonably warm. Clouds will be on the increase again starting in the late afternoon tomorrow ahead of a slowly digging trough across Nevada and western Utah. Southwesterly flow ahead of an approaching upper level trough will keep temperatures warm Sunday and also somewhat breezy as the pressure gradient tightens. A few showers are possible Sunday afternoon and increasing as the evening progresses and said trough approaches. The trough still looks to remain over the area as a push of upper level energy drops down and causes a closed low to form off the base off the trough.
Surface winds at LBB should remain high enough to forego LLWS, before tapering by daybreak ahead of a cold front with light N winds.
500 AM CDT Sat Mar 24 2018 Today and tonight: early morning surface analysis had an 1001mb low centered over eastern Kansas and an 1024mb high centered over the Florida Peninsula ridging back to the west across the northern Gulf. Both of these features will weaken through tonight and drop a weak cold front into our CWA that is still expected to stall near the Interstate 20 corridor by Sunday morning. This activity is expected to expand across the Highway 82 corridor today and then farther south after midnight tonight when the cold front drops in. The cooler air in the wake of the cold front tonight will allow our northern zones to bottom out in the 50s but morning lows will be well above normal elsewhere, in the lower 60s.
High pressure ridge will be overhead this morning, then slide to the East Southeast this afternoon. There will be a warm front just to the North of the forecast area this afternoon. The region will be between an elongated low pressure system to the North and high pressure to the South Tonight. Sunday and Sunday Night: An area of low pressure will move off the coast of the Carolinas, and a backdoor cold front will move into southeast Georgia in the early to mid afternoon.
/Pelatti 06Z TAFs: Large area of low pressure with smaller disturbances nested inside it and moving around will continue to influence the aviation area.
The area of low pressure will slide to the southeast today taking the precipitation along with it. Temperatures will remain below normal for today with highs in the low 30s northeast to the upper 30s to near 40 south. Convergence and isentropic ascent will move into western Minnesota with an approaching warm front during the afternoon. Highs climb to near normal with readings in the low to middle 30s northeast to the middle 40s south and northwest. Not a whole lot going on in the early part of the extended as high pressure builds in and nuisance showers ride a low amplitude zonal pattern with temperatures rebounding a tad.
Near the surface, a cold front is pushing southeast across west central into southwest Kansas. Saturday, weak upper level ridging moves into the Central Plains allowing high pressure to move in western Kansas. Temperatures will range from the lower 60s toward central Kansas to the lower 70s toward the Kansas/Oklahoma border. The low in eastern Colorado deepens on Sunday. Southwest Kansas will have a few opportunities for precipitation through the week as a positively tilted trough from the Pacific northwest drops into the Four Corners region, becoming a closed low, and slowly begin to move Northeast through the week.
Low temperatures range from the low to mid 30s in far eastern Colorado to the low 40s out by Hill City. Northwest winds in the morning become east to southeast during the afternoon with the higher speeds along and west of the CO/KS border where gusts to 30 mph possible. Right now no changes will be made and will continue to advertise highs ranging from the low to mid 50s east to the mid/upper 60s far west and south. Low confidence forecast in Sunday night precipitation chances with current low temperature forecast ranging from the low/mid 30s west to low 40s far east.
High pressure and dry conditions will be present for Sunday. The current conditions with this system upstream show a mix of precipitation with snow, rain, sleet, freezing rain, thunderstorms, etc all being reported. Higher precipitation rates will be present and therefore if snow does occur then the high rate could overcome the warmer ground temperatures. High pressure and dry conditions will be present for Sunday.
Dewpoints have dropped this afternoon generally into the 30s, while temperatures are a few degrees cooler than those observed 24 hours ago. Models remain in good agreement through the weekend, depicting a longwave trough in the eastern Pacific translating eastward across the western states.
Precipitation band associated with a cold front is moving through the area, currently bringing rain over the Sacramento metro area and snow extending up the I80 corridor. After the cold front moves out later in the morning, additional mountain and foothill showers will develop. Diminishing showers are expected by Sunday morning as the trough shifts into the interior West and ridging from the eastern Pacific begins to edge onto the West Coast.
Models in reasonable agreement with the track of the approaching low pressure system that moves into our area tonight. Precipitation type is still problematic across the extreme northeastern parts of our area, with model soundings showing a deep near isothermal layer close to freezing for a period at the beginning of the precipitation.
Extensive surface ridging will remain in place across the area both today and Sunday as a large high pressure system builds expands into southern Quebec in the wake of aforementioned upper low pressure over the northeast CONUS (as it shift southeast over the western Atlantic ocean and become cutoff from the northern stream storm track).
259 AM PDT Sat Mar 24 2018 A low pressure system near the West Coast will maintain onshore flow this weekend with below average high temperatures.
A low pressure system will bring isolated to scattered snow showers today and Sunday. High pressure will bring dry weather for the workweek with temperatures near to a little above normal for the latter half of the week.
This system will quickly move northeast this morning as the upper trough/low moves into southern Canada, with developing westerly cross-barrier flow behind this feature helping to dry things out this afternoon and warm temperatures to values just a little below normal. The remnants of the upper low will move across the area Sunday into Sunday night, and will bring snow primarily to the southwest mountains with additional snow accumulations.
High pressure will start to weaken and shift south today as a drier northwest flow develops, and continues for the remainder of the week. A cooler airmass will spread into the north starting Thursday while the south stays hot. The high pressure that has dominated the region the past several days looks to continue to do so today.
Later today a cold front will push across this area. with slightly cooler temperatures. Anglin A gradual cooling trend is expected over the next few days as several cold fronts drop south out of Canada. On Thursday, a cold front will drop south out of Canada, possibly bringing a few showers with it to central MT.
626 PM EDT Wed Jun 21 2017 A cold front will cross the region this evening. High pressure will cross the region Thursday.
Chattanooga Airport, TN 70 80 72 84 / 40 80 70 70 Knoxville McGhee Tyson Airport, TN 69 79 70 83 / 20 80 60 70 Oak Ridge, TN 70 80 71 81 / 20 80 70 80 Tri Cities Airport, TN 65 79 67 80 / 10 70 60 60.
High pressure will start to weaken and shift south today as a drier northwest flow develops, and continues for the remainder of the week. A cooler airmass will spread into the north starting Thursday while the south stays hot. High pressure continues to dominate the Desert Southwest with well above normal temperatures across the region, and excessively hot temperatures across the southwest corner of Utah. A cold front will move into northern Utah late this evening and push south through the day Thursday, eventually making it into southern Utah tomorrow evening. With the high pressure remaining over the Desert Southwest, the models are pretty consistent in keeping temperatures aloft very warm. With such a dry airmass, the excessive heat headlines were extended for the lower elevations of Utah's Dixie area through the weekend.
300 PM CDT Wed Jun 21 2017 A cold frontal passage this afternoon will be followed by another surge of cold air advection and gusty northwest winds Thursday. We continue to downplay the potential for surface-based storms in our area of responsibility this afternoon since the current pace of a southeast-moving pre-frontal trough and cold frontal boundary suggests they will be mostly east of the area by the time capping is sufficiently eroded for convective initiation.
1106 AM MDT Wed Jun 21 2017 Upper level analysis has broad but flat ridge across the western CONUS with fast zonal flow across the Pacific Northwest through the northern Plains. At the surface, cold front extends from southern Canada through central Montana, with weak warm front lifting through western SD. Cold front over Montana will move into western portions of the area this morning before stalling out over western SD during the day. Highs will range from the lower to mid 80s over northeast WY and the Black Hills, to near 95 over south central SD. Another round of nocturnal convection is possible later tonight as a weak disturbance aloft passes across and eventually pushes the cold front east of the forecast area. Cooler air will move into the area during the morning, with highs Thursday afternoon in the 70s.
639 PM EDT Wed Jun 21 2017 High pressure will build over the area Tonight and Thursday.
Temps tomorrow will once again be hot, but given the timing of the front, may be a bit cooler than todays max temps.
241 PM CDT Wed Jun 21 2017 Weak convection today and associated cooling has kept the warm front from redeveloping north of the forecast area as originally expected. However, ridging will once again build into the area overnight and the delayed translation of the warm front into Wisconsin is likely to occur late tonight or Thursday morning as strong insolation should assist in mixing.
255 PM CDT Wed Jun 21 2017 Tropical Storm Cindy is currently positioned in the northwest Gulf of Mexico and will begin to make a increasingly northward turn overnight as it moves between a break in the subtropical ridge.
High pressure will continue to bring above normal temperatures and dry conditions through the weekend.
Rainfall amounts of up to 4 inches have fallen over the Highway 98 corridor today and more is on the way.
338 PM EDT Wed Jun 21 2017 A cold front will cross the region this evening. High pressure will cross the region Thursday.
Initially there is a flat upper ridge with westerly flow off the coast into the Pacific Northwest. The upper ridge significantly amplifies late this week and this weekend for likely the warmest weather of this year so far over the area.
626 PM EDT Wed Jun 21 2017 High pressure will build over the area Tonight and Thursday.
Models continue to develop convection along the cold front over eastern ND by 5 pm or so, then quickly move it eastward across northwest MN so it is out of the FA by mid to late evening. Convective temperatures do lower into the lower 80s by 00z and an increasing amount of guidance developing convection along boundary at this time.
1148 AM MDT Wed Jun 21 2017 Updated aviation discussion High pressure centered over AZ and NM will continue to control the dry and hot weather over the area today and tonight, though mid level moisture is gradually increasing under the high.
334 PM MDT Wed Jun 21 2017 A 596 DM ridge of high pressure remains centered over the southwestern CONUS this Wednesday afternoon. Diurnally driven afternoon convection has once again developed over the higher terrain, aided by marginal mid-level moisture still lingering on the northern fringes of the ridge of high pressure. This increase in winds aloft will tend to aid/organize any thunderstorms that do form during the afternoon hours, and some dry lightning is again expected area-wide in the higher terrain.
Low-level moisture advection has pushed surface dewpoints upward into the 55 to 60 F range in central ND in advance of a pre-frontal trough and ultimately ahead of the cold front that is marked by a switch from west to northwest surface winds. As of mid-morning the surface cold front extends from Weyburn, Saskatchewan, to Glendive and Miles City Montana. Enhanced mixing with the frontal passage and a stout thermal ridge in the warm sector of the cyclone still favors highs near 90 F today in south central ND. A cold front will sweep through the region today. Much cooler, below-normal temperatures are expected late this week and into the weekend.
Very hot and dry weather will persist through at least the early portion of the weekend as high pressure remains entrenched over the western United States. A thermal trough will move toward the coast tonight expanding the heat westward on Thursday. Additionally, gusty offshore ridge top winds will develop overnight into Thursday morning resulting in slightly elevated fire potential.
135 PM PDT Wed Jun 21 2017 High pressure will continue to bring above normal temperatures and dry conditions through the weekend.
606 PM EDT Wed Jun 21 2017 A weak cold front will stall out just south of Pennsylvania tonight, then return north as a warm front on Thursday.