Aikyam-Lab/Synoptic-Bench huggingface dataset:
Best chances will be along the southern Laramie Range eastward into the southern Nebraska Panhandle, and near the Pine Ridge north of a line spanning from Lusk to Alliance. Warmer temperatures versus yesterday as the airmass continues to moderate. With ridging and warmer temperatures aloft, along with less low and mid level moisture, thunderstorm coverage will decrease with only isolated showers and thunderstorms forming along and west of Interstate 25 along the spine of the Laramie Range. Temperatures even warmer than today, and have compromised between the NAM and GFS MOS maximums for highs.
239 PM EDT Fri Sep 8 2017 There is a slight chance for a shower into mid evening otherwise high pressure will begin to move into the area tonight with clearing skies and cool temperatures.
248 PM CDT Fri Sep 8 2017 High pressure over the Tennessee and Ohio Valleys will continue to push east tonight. Low temperatures over central Missouri will be a couple of degrees warmer due to some mid level cloudiness over the area tonight.
High pressure aloft will prevail for the next several days.
Cool nights and mild days through the Weekend as sprawling high pressure dominates the Great Lakes Region. Center of the strong (1032 MB) high centered over Lower Michigan tomorrow night will likely lead to mins the same or even slightly cooler compared to tonight.
Otherwise temperatures are running about 5 to 10 degrees cooler than at this time yesterday. High pressure over northern Minnesota this morning will move east with increasing southeasterly winds today in eastern ND and the RRV. Upper level low in SW ND to move across far northern SD and southern ND Saturday afternoon and night with it spreading a few clouds.
The Southeast is sandwiched between high pressure over The Great Lakes and Hurricane Irma near Cuba. -- Overview -- Hurricane Irma will continue WNW through Saturday at the base of the eroding subtropical ridge. The large core of the northern stream trough responsible for breaking down the subtropical ridge will continue to move through the Northeast into the western Atlantic.
1230 PM CDT Fri Sep 8 2017 There have been no changes in the forecast for the Ozarks region with mild fall like weather in place thanks to high pressure over the area. Todays temperatures will be a bit warmer than the past few days with low 80s expected.
310 PM EDT Fri Sep 8 2017 An upper level low that brought us clouds, scattered showers and much below normal daytime temperatures over the past several days will exit east across the New England states and Southeastern Canada tonight and Saturday.
Winds are out of the north to northeast, near 20 knots along the marine stations near Upper and Middle Keys, and near 15 knots from the marine stations around the Lower Keys. On the current forecast track, the center of Irma will pass over the Keys Island Chain around Marathon and the Seven Mile Bridge Saturday night.
Saturday will start off cloudy as a mid-level trough continues to affect the North Country. Could see a few more isolated showers, mainly across the higher terrain as the upper trough axis will be right over the region.
A large area of high pressure remains in control tonight and tomorrow resulting in pleasant, benign weather. 850mb temperatures are expected to be a degree or two higher than today, so expect max temperatures on Saturday to be about 1-2 degrees warmer than max temperatures on Friday. Pleasant conditions over the weekend with high pressure in control. Lows on Saturday night will be in the low 50s for most places along with clear skies.
A hot high pressure ridge aloft is in control across the region. Saturday, a Canadian Pacific coast broad upper-level trough will try to sweep along the international border, but NE Montana will remain in the pre-frontal, compressional heating zone.
106 PM EDT Fri Sep 8 2017 VFR conditions prevail today at all sites with high pressure in control.
342 PM MDT Fri Sep 8 2017 Another afternoon with isolated shower activity developing over the higher terrain and drifting eastward. Weak westerly flow aloft remains over the region as the upper ridge also remains in place over the Rocky Mountain interior.
150 PM EDT Fri Sep 8 2017 A weak area of low pressure will swing across the Northeast through the first half of the weekend.
Readings into the low to mid 80s are expected in the southwest half of the forecast area.
300 PM EDT Fri Sep 8 2017 The next few days will feature dry and pleasant weather across eastern Kentucky, as a large and strong ridge of high pressure remains firmly entrenched across the region. Highs on Saturday will top out in the lower 70s for most locations. Lows the next two nights should range from the mid 40s to the lower 50s.
For much of the summer, the desert southwest was under the influence of a dome of high pressure and this continues to morph away (albeit slowly). A ridge of high pressure extending from just north of T. The polar jet will remain across the northern states and flatten the ridge across Canada. Irma along the East Coast and another closed low off the coast of Srn California.
A high pressure ridge aloft will move across the upper Midwest through Saturday and will keep the Northland dry nearly cloud-free. An upper trough will be over the Northern Plains with ridging just downstream over the Northland Saturday evening.
249 PM MDT Fri Sep 8 2017 Upper analysis currently showing a broad upper ridge over the western two-thirds of the CONUS with a trough over the east. At the surface, low pressure is deepening over the northern Rockies with a high pressure center over the Great Lakes region. Some convection has already develop over the higher elevations of the Black Hills but so far the cell have only been weak and short-lived.
342 PM EDT Fri Sep 8 2017 A trough of low pressure will rotate southeast across the area today.
304 PM MDT Fri Sep 8 2017 The upper ridge axis continues to shift eastward allowing a better fetch of moisture into southern CO. -KT Sat night through Tue, an upper ridge will be over the forecast area with enough moisture over the area for daily pcpn chances, mostly over and near the higher terrain. These will potentially bring a better chance for pcpn to the southeast plains, in addtion to the higher terrrain locations.
Cooler and breezy weather will prevail for the weekend thinning the smoke out.
156 PM EDT Fri Sep 8 2017 Aviation/Hydro Low pressure will move out today and be replaced by high pressure which will sit over the area for several days. Persistent upper trough finally begins lifting out today with final batch of showers impacting mainly the southwest corner of lower MI this morning.
Warmer temperatures versus yesterday as the airmass continues to moderate. With ridging and warmer temperatures aloft, along with less low and mid level moisture, thunderstorm coverage will decrease with only isolated showers and thunderstorms forming along and west of Interstate 25 along the spine of the Laramie Range. Temperatures even warmer than today, and have compromised between the NAM and GFS MOS maximums for highs.
These showers should shift southeast later this morning as ridging takes control of the weather across the region to end the work week and last at least through the first half of the weekend. Further north clearing skies and light winds have led to some patchy fog and frost as temperatures has fallen into the lower to middle 30s. Once the frost, showers, and fog clear later this morning mostly sunny skies and warmer conditions will prevail across the area as daytime highs rise into the lower to middle 60s. Frost Advisory headlines are again possible tonight given lows in the lower to middle 30s across north-central Wisconsin, with warmer lows around 40 across much of central and east-central Wisconsin.
Models show high pressure will remain over the Great Lakes region through the weekend.
655 PM EDT Fri Sep 8 2017 A trough of low pressure will rotate southeast across the area today.
425 PM EDT Fri Sep 8 2017 An upper level low that brought us clouds, scattered showers and much below normal daytime temperatures over the past several days will exit east across the New England states and Southeastern Canada tonight and Saturday.
1237 PM CDT Fri Sep 8 2017 A trough of low pressure extending from the central Great Lakes back toward NE Illinois will be the focus for thicker cloud formation today. Otherwise, cu-rule analysis shows mostly sunny conditions prevailing elsewhere in our forecast area, under the influence of dry high pressure centered near Lake Superior. Large upper level trof over the Great Lakes region and into the eastern Ohio river valley will shift east into New England and into the mid Atlantic States by dawn Saturday. This front will pass thru dry with sw winds shifting eastward and bringing in a bit cooler air by Saturday.
High pressure and dry conditions very much in control. To the south, low to mid level ridging was noted over TX, with the WRN extent of the sub-tropical ridge stretching W across the FL peninsula. Mid/upper ridge over TX progged to continue amplifying, sending Katia SW into Mexico within the next 24hrs. This feature will erode the subtropical ridge and induce Irma to make a northward turn near the southern tip of FL, then continue N and then NW TWD the TN Valley as the two become entangled.
156 PM PDT Fri Sep 8 2017 A trough of low pressure will bring cooler weather through Saturday, but also moisture for some thunderstorms during afternoons and early evenings in the mountains and deserts.
317 PM CDT Fri Sep 8 2017 High pressure at the surface extends down from the western Great Lakes into the northwest Gulf of Mexico. This is helping to provide the forecast area with another nice weather day with temperatures in the low to mid 80s and relative humidity values in the 30 to 40 percent range. Rua The relatively dry northerly continental flow will prevail for the next several days as tropical system merges with the large eastern upper level trough. By the end of the forecast period, warmer and more humid conditions will be possible as low level southerly flow resumes over the forecast area. Despite the increase in low level moisture, upper level ridging at that time should keep convection in check, and therefore will keep pops out of the forecast.
Mid level southerly flow ahead of 576 DM upper low centered about 100 NM west of KMRY this afternoon is leading to some isolated thunderstorm development over our mountains. Afternoon temps running upwards of 11 degrees warmer than 24 hours ago and should max out near seasonal normal for early September.
/issued 424 AM CDT Fri Sep 8 2017/ An upper level trough over the northeast United States will continue to slowly lift out to the northeast through the weekend.
205 PM EDT Fri Sep 8 2017 An upper level low over the Great Lakes will gradually move eastward and high pressure at the surface will move in from Canada.
This weekend, an upper level ridge will amplify over the central and southern Rockies and western High Plains keeping north- northwesterly flow aloft over us. Most deterministic and ensemble guidance has it moving northwestward into the Tennessee Valley by mid-week before phasing somewhat with northern stream trough and accelerating eastward late in the week.
The High Plains lee trough will deepen a bit today so breezy southerly/southeaster winds around 20 mph are expected, particularly in during the late morning and into the afternoon hours. The upper air pattern doesn't look that impressive with ridging to the west.
Will have scattered to numerous showers and thunderstorms with the highest chances inland each day.
Skies will be sunny today with highs reaching the lower to mid 80s. The upper level low pressure trough has become more broad over the east coast, and hence not as strong a steering flow influence for Hur. Quiet weather pattern wl be the name of the game heading into the weekend as the high pres rdg remains in place acrs AR. Highs wl be mainly in the lower/mid 80s, with nighttime lows in the 50s to lower 60s.
623 PM EDT Fri Sep 8 2017 High pressure extending southward from the Great Lakes Region will direct dry air into our forecast area through Saturday night.
425 PM EDT Fri Sep 8 2017 An upper level trough will slowly cross the state on Saturday.
With a northeasterly to easterly surface flow, temperatures should be close or slightly cooler than yesterday's highs.
High pressure is in control which will keep things dry. 500-300 mb troughing over Wrn Mexico lifting north will send intermittent mid to high level clouds into South Central TX over the next day or so. West of Highway 281, dewpoints early this morning have yet to show the daily fluctuations going forward as the weak easterly winds haven't pushed the low level moisture return that far west yet.
On the weather maps this morning, a broad upper level trof was in place from the upper Mid-West to the central Gulf coast. At the base of the trof axis, a surface frontal boundary was draped from off the southeast US coast to the central Gulf. High temperatures today range from the lower to mid 80s.
An upper level ridge currently extends from New Mexico southeast into Louisiana and the Texas gulf coast. This ridge will persist over the area through tonight.
546 PM EDT Fri Sep 8 2017 A trough of low pressure will rotate southeast across the area today.
344 PM EDT Fri Sep 8 2017 A weak area of low pressure will swing across the Northeast through the first half of the weekend.
135 PM EDT Fri Sep 8 2017 An upper level trough extending from eastern Canada southwest into the Great Lakes will gradually move off to the east through Saturday. This will allow high pressure to build into the region from the north.
305 PM EDT Fri Sep 8 2017 High pressure will extend across the state through tonight. A dry cold front will move south through the area late Saturday into Saturday night.
Cooler temperatures are expected through the weekend. The ridge driving this surge of moisture is expected to remain in place through the bulk of the weekend with the best chances for moisture existing today and Saturday especially for Western Coconino and Yavapai Counties. Elsewhere storms are expected to develop off of the higher terrain and move northward.
/Issued 358 AM CDT Fri Sep 8 2017/ High pressure will continue the north to northwest flow over the Panhandles for the majority of the forecast period.
408 PM EDT Fri Sep 8 2017 The next few days will feature dry and pleasant weather across eastern Kentucky, as a large and strong ridge of high pressure remains firmly entrenched across the region. Highs on Saturday will top out in the lower 70s for most locations. Lows the next two nights should range from the mid 40s to the lower 50s.
246 PM EDT Fri Sep 8 2017 High pressure with dry and cool weather dominates through the weekend. Otherwise, Canadian high pressure will continue to funnel cooler than normal temperatures southward Saturday, despite abundant sunshine. Will continue with the primarily clear and dry with high pressure in control over the Great Lakes.
230 PM EDT Fri Sep 8 2017 Upper air pattern consists of a 500 mb trough on the west coast, a ridge over the Rockies and a trough over the ern U.
Water vapour loop had weak upper low over southeast MT. Today and tonight, upper low slides southeast as back door front meanders southwest.
452 PM MDT Fri Sep 8 2017 High pressure has shifted to the southeast in response to the closed low pressure system drifting southward just off the West Coast according to 12Z model initializations.
236 PM EDT Fri Sep 8 2017 High pressure with dry and cool weather dominates through the weekend. Otherwise, Canadian high pressure will continue to funnel cooler than normal temperatures southward Saturday, despite abundant sunshine. The period starts with a broad area of high pressure centered over the Great Lakes region keeping this region dry while an elongated upper level trough axis resides squarely over the northern Appalachians.
For this update, an upper low over far northwest South Dakota continues to slowly scoot east, not forecast to reach the James River Valley until Saturday afternoon. Enough Omega/upward vertical motion in the lower levels to keep the atmosphere more unstable overnight, with less fog development. Current surface analysis places high pressure centered along the Manitoba/Ontario border stretching into northern Minnesota, while weak back-door frontal boundary extends from eastern Montana wrapping into central South Dakota. Upper level analysis places ridge stretching from the four-corners region northward into the lee side of the Canadian Rockies. quiet weather expected as ridge axis passes over the area. Region remains under the influence of the ridge passing east on Saturday, bringing dry conditions and seasonably mild temperatures.
330 PM MDT Fri Sep 8 2017 High pressure has shifted to the southeast in response to the closed low pressure system drifting southward just off the West Coast according to 12Z model initializations.
After another cool morning, temperatures have rebound nicely into the low to mid 80s across the region. Have dropped low temperatures under the SuperBlend for Saturday morning given this morning's readings in some of the lower drainage areas.
139 PM EDT Fri Sep 8 2017 High pressure will keep us in a cooler pattern into the weekend.
This 500 hPa closed low will drift south and east over the next 24 to 48 hours, impacting the local weather. Closed low moves across southern WI by 18Z Monday.
105 PM CDT Sun Aug 27 2017 Aloft: NW flow will become almost due N tonight as a ridge and large subtropical high lodges over the Wrn USA with a trof over the E. The tail end of this trof will cross the CWA today. Dry and quiet wx in NNW or NW flow as a ridge dominates over the Wrn USA with a trof in the E. Slightly cooler than normal temps Mon-Tue.
228 PM MDT Sun Aug 27 2017 High pressure aloft will bring seasonably warm mostly dry weather across southern New Mexico and west Texas this week. Large high pressure area aloft centered over Utah is combining with Tropical Storm Harvey to the southeast to induce a mid and upper level northeast flow across southern New Mexico and west Texas this afternoon. Warmer dry air aloft is thus being transported into the region with precipitable now under an inch and air mass showing little or no instability. Low level monsoonal pattern will persist however as large surface thermal/heat low west of the divide will combine with high pressure over the plains states plus Harvey circulation to sustain easterly winds with some inflow of moisture.
238 PM CDT Sun Aug 27 2017 Widespread thunderstorms associated with an upper level wave that developed just ahead of a slow-moving cold front are beginning to exit the forecast area. The cold front will push through the majority of the CWA by Monday morning, ushering in drier air.
1122 AM MDT Sun Aug 27 2017 An upper level ridge will be centered over UT today and tonight. The NAM, HRRR and GFS show isold pcpn in the afternoon hours, over and near the higher terrain, with dry conditions over the southeast plains.
In the upper levels there is a ridge over the East Coast and a trough over the Upper Mississippi River Valley. Lows will be in the lower to mid 70s.
A look at several CAMs point to showers and thunderstorms becoming more scattered in nature late this afternoon and into the overnight hours ahead of the cold front currently in southern Iowa. This cold front is expected to clear the area by tomorrow night with high pressure building in to the region. Lingering precipitation should taper off on Monday night behind a weakening cut-off low as it drifts from the western Great Lakes into the Ohio Valley.
Somewhat cooler air will filter southward into western Kansas behind the boundary tonight dropping lows well down into the 60s(F) across the area. A generally dry pattern is expected across much of western Kansas through the middle part of the week as medium range models show upper level ridging building across the Great Basin and the Four Corners Region during the period.
348 PM MDT Sun Aug 27 2017 As expected, enough moisture and lift occurred under the high pressure to bring some weak convection this afternoon. Almost no change for tomorrow as the center of high pressure will remain over central Utah. High pressure remains in control with convection kicking off each afternoon and evening.
Synoptically, a middle- and upper-level ridge is in the process of building into the area and will be in firm control overnight and Monday. We followed suit with the previous shift and weighted the forecast toward the warmer and drier edge of model guidance, with minimum humidities Monday afternoon in the teens over western ND.
145 PM EDT Sun Aug 27 2017 High pressure will continue to produce dry weather and comfortable temperatures for most of this upcoming week.
150 PM EDT Sun Aug 27 2017 Canadian high pressure will remain in charge through Monday providing dry weather and below normal temperatures. High pressure will be in control of the weather today but slightly shift to the east. High pressure remains in control today. Highs maybe a touch warmer than yesterday in low-mid 70s.
151 PM PDT Sun Aug 27 2017 High temperatures will be well above normal for the first half of the week, with strong high pressure aloft over the Great Basin.
Strong vorticity maximum rotating around upper low in northern Minnesota dived through central Nebraska overnight and this morning, triggering a line of wind-producing thunderstorms across central and a small part of eastern Nebraska.
BKN/OVC stratus will move south behind the cold front with cigs at VFR to near MVFR. A weak cold front will bring clouds and a wind shift to the north starting this afternoon in the north and clearing the southern areas overnight. A cold front is expected to move into northwest and north-central sections this afternoon, with isolated thunderstorms developing along and ahead of it. Cooler conditions expected area-wide on Monday, owing to morning clouds and northeast winds.
Showers will spread across central Indiana tonight from northwest to southeast as a low pressure system approaches the area.
433 PM MDT Sun Aug 27 2017 Current surface analysis shows weak high pressure over the area, with mostly sunny skies and light winds. Upper level analysis shows ridge building over the western states, with northwest flow over the Northern Plains. As ridge builds slightly east early this week, temps will rise to above average levels.
Similar to yesterday, lots of mid to high layer clouds carried downstream of Harvey by upper level winds are limiting sunshine, keeping temperatures a little cooler than average, and producing patches of sprinkles and light showers. The prospect of even thicker clouds tomorrow may keep a few spots in southwestern zones from hitting 80 degrees, even though lows tonight will generally be in the lower 70s.
The low clouds and fog will start to lift by late morning. Winds will be light outside of the thunderstorms and will turn more to the north and northeast behind the cold front which will be helping to add lift for the thunderstorms. /Issued 438 PM CDT Sun Aug 27 2017/ For tonight, a cold front will move across the OK and TX Panhandles. Dry weather is then anticipated Monday night through next Sunday as northerly flow prevails around the eastern periphery of an upper level ridge of high pressure progged to anchor itself over the western states.
An upper level low over western Lake Superior is forecast to drop southeast into northern Illinois on Monday.
Strong high pressure remains in place over the region and will maintain hot temperatures for inland areas through at least Monday.
258 PM EDT Sun Aug 27 2017 The forecast area will be between a frontal boundary off the Southeast Coast and high pressure ridging southward along the Appalachians through tonight.
During this time, models show a trough dipping out of the Canada and moving across the Great Lakes. Its not until late this week that a secondary and stronger trough to the north pickups up Harvey, or whats left of it, a takes it northeast.