Aikyam-Lab/Synoptic-Bench huggingface dataset:
Weak ridge across the area today with only low end chance pops across the south. Ridge breaks down tomorrow as a low depends over TX/OK and a weak cold front approaches from the Ohio Valley.
An approaching low pressure trough will bring slightly cooler weather to the area over the weekend.
939 AM EDT Sat Jun 3 2017 High pressure will extend across the region this weekend.
A weak stationary frontal boundary will be draped over the Georgia coastal waters today, with high pressure centered over the Appalachians. High pressure will then slowly shift eastward on Sunday, moving offshore of the southeastern seaboard by Sunday night.
A mid-level trough over the eastern United States and a cutoff low over the southern plains will work to create plenty of rainfall chances for much of the United States east of the Rockies and south of Interstate 40 into the early parts of the week.
1159 AM EDT Sat Jun 3 2017 Weak high pressure will remain in control of the weather through today, bringing warm and dry conditions to the local area.
A broad trough will quickly pass through the region this weekend while high pressure builds behind it. Temperatures will remain warm inland for Saturday with a brief period of cooling occurring on Sunday as the trough swings through.
High pressure will bring hot and dry conditions to the forecast area through the weekend.
although expect the activity to expand in coverage across northeast OK into northwest AR through the afternoon as the upper low lifts slowly north.
/issued 349 AM CDT Sat Jun 3 2017/ SHORT TERM (Now through Sunday): 500 mb low pressure will meander over north Texas and Oklahoma during the period.
Latest water vapor imagery showed a upper level trough oriented roughly from the central Canadian Prairies to the Central High Plains to Southern High Plains. The upper level trough will move eastward to the far eastern Canadian Prairies to Upper Mississippi Valley as a ridge builds upstream from the Central Rockies into Saskatchewan today. Cooler highs will be seen today compared to yesterday given the lack of insolation and cooler air aloft. Highs are expected to approach seasonal normal values over southwest NEB from slightly warmer conditions in far north central NEB. Low sky cover and light winds will give way to near normal lows, mainly in the lower to mid 50s.
1239 PM EDT Sat Jun 3 2017 High pressure will maintain fair weather through Sunday morning.
954 AM EDT Sat Jun 3 2017 A weak cold front will move across the area today. High pressure returns tonight into Sunday as low pressure tracks through the Great Lakes.
510 AM PDT Sat Jun 3 2017 An upper level trough in the Gulf of Alaska will approach today and then move through the forecast on Sunday. Increasing cloud cover and onshore flow today will lead to temperatures about 5 degrees cooler than were observed yesterday. Sunday will be about 10 degrees cooler still, with most areas experiencing highs in the 60s and 70s, which is about 5 degrees below normal. On Sunday the focus of activity shifts a bit eastward as the trough moves inland, with showers over the East Side.
/issued 422 AM CDT Sat Jun 3 2017/ The weak upper trough has re-centered nearer the Texas Panhandle early this morning, though broad weak circulation covered more than the entire area.
Currently weak high pressure is off to the east of AR, and a light east to southeast wind is into AR. To the southwest, an area of light convection was gradually rotating around an upper low pressure system, and will affect southwest to west AR this morning.
1057 AM EDT Sat Jun 3 2017 A weak cold front will move across the area today. High pressure returns tonight into Sunday as low pressure tracks through the Great Lakes.
Strengthening southwest flow today ahead of an approaching upper trough. Isolated activity will initiate over the higher terrain of east-central Oregon, including Baker county and far northern Harney county, and west-central Idaho, to the north and east of a line from McCall to Banner Summit. A slight chance of thunderstorms across the higher terrain this evening. Scattered showers and thunderstorms developing Sunday afternoon and evening as a strong Pacific cold front crosses eastern Oregon and southwest Idaho. As upper level flow turns to the southwest, the region will continue a warming trend with maximums reaching into the low 90s along the Snake River Plain Saturday. By Sunday, an upper level trough will begin its journey across the Pacific Northwest with a cold front pushing south and east out ahead of it.
Chattanooga Airport, TN 88 67 85 69 / 20 30 60 60 Knoxville McGhee Tyson Airport, TN 86 65 84 66 / 10 10 50 60 Oak Ridge, TN 88 63 84 67 / 10 10 50 60 Tri Cities Airport, TN 84 58 83 63 / 0 10 30 60.
Did blend in bias corrected SREF temps that better delineated cooler lake sfc temps.
633 AM CDT Sat Jun 3 2017 Short wave moving across central Canada and attendant weak cold front will have minor impact on sensible weather across the region today.
The trough shears out later tonight as the low center drifts south into northern Texas by Sunday as it phases loosely with an upper level trough over the Great Lakes into eastern Canada. The highest POPs will be this afternoon across Central Texas and the Edwards Plateau, then shift to the south and southeast across South Central Texas tonight into Sunday.
An upper trough just offshore will weaken and move ashore on Sunday.
945 AM EDT Sat Jun 3 2017 A disturbance aloft will bring a chance of showers through early this afternoon, but otherwise high pressure will maintain fair weather through Sunday morning.
/issued 405 AM CDT Sat Jun 3 2017/ An unsettled pattern will continue into the weekend as an upper low slowly traverses the area. Will carry fairly high PoPs today and slightly lower them Sunday as the upper low shifts east of the area.
950 AM EDT Sat Jun 3 2017 High pressure centered over the Great Lakes will continue to extend across the region today. The high will drift off the East coast on Sunday allowing low pressure to track SE out of Canada into the Central Great Lakes.
WV imagery and upper air analysis indicates a slightly positive- tilted upper level trough of low pressure transitioning slowly eastward across the South Plains of west Texas into the Red River Valley. Near the surface, a weak area of high pressure is located across southeast Wyoming while an extremely weak frontal boundary extends from southeast Colorado up into central Nebraska. Upper level low pressure over the central plains will gradually move southward through Sunday.
Heights aloft rise by Sunday with the midlvl ridge axis over central WY, and high temps will increase around 10 degrees over most areas. It will be another storm free day, the exception being over the higher terrain where isolated convection cannot be entirely ruled out.
1001 AM MDT Sat Jun 3 2017 Temperatures continue to trend warmer this weekend, climbing into the 80s and lower 90s on Sunday afternoon. Warmer temperatures will help spawn widespread showers and thunderstorms Sunday afternoon and evening, some of which could produce heavy rain and damaging wind gusts.
A weak upper low circulation, centered over west Texas early this morning, will be slow to move eastward across Oklahoma this weekend.
600 PM EST Mon Feb 26 2018 High pressure over the Ohio Valley will slowly drift eastward by mid week.
524 PM CST Mon Feb 26 2018 High pressure will continue to slowly move to the east with clear skies and VFR conditions expected overnight.
404 PM PST Mon Feb 26 2018 Low pressure moving across the area tonight will bring showers across the region through Tuesday, with high elevation snow mainly across the Kern county mountains.
551 PM CST Mon Feb 26 2018 Clear skies and weak upper level ridging has allowed temperatures to climb above normal today with highs in the upper 50s to lower 60s. Mild temperatures will continue through Tuesday as downstream weak upper level ridge persists over the region in response to an upper level trough digging into the southwestern CONUS. Couple that with strong WAA getting underway Tuesday and highs will climb into the low to mid 60s.
832 PM MST Mon Feb 26 2018 The distinct upper feature over the West is that of a split trough, with the closing-off base moving through San Francisco, and the shallow northern trough swinging through southern Saskatchewan. Templer Previous Discussion: A splitting upper trough overhead will keep northeast Montana in a dry northwest flow aloft through the week.
629 PM EST Mon Feb 26 2018 Aviation High pressure will continue to bring fair weather through Tuesday evening.
517 PM EST Mon Feb 26 2018 High pressure will build across the region through Tuesday.
dry conditions will persist thru the day as region under NW flow with highs ranging from the low 50s north up to the lower and mid 60s across the far south.
Lows tonight will drop back into the lower/mid 30s.
Overnight, lows will dip into the teens and lower 20s with slightly cooler temperatures over the snow field over Boulder and areas around Longmont. These winds will move off the Cheyenne Ridge helping to keep conditions dryer along the base.
Overnight mins will generally be warmer than the past few nights given modest surface winds, with warmest readings in the lee of the eastern mountains. On Tuesday, southwest flow continues as upper trough digs southward along the Pacific coast. SW winds to the south of the trough will become gusty once again, and will upgrade Fire Weather Watch to a warning for zones along the NM border. Along and north of the trough, winds should be weaker, and won't issue any highlight as speeds should stay just below 25 mph threshold.
Some locations in the Upper Cumberland will get into the low to mid 30s, so cannot rule out some patchy frost in a few locations. However, its more likely to see patchy fog develop instead due to the low dewpoint depressions and very wet ground due to recent rainfall. It's not out of the realm of possibility for a few places to even touch the freezing mark in the Upper Cumberland tonight.
An upper level trough will begin to swing towards the region late Tuesday, which will shift flow over to the southwest. Stuck with the warmer guidance temperatures for the area, with temperatures just a touch cooler lakeside.
Hi-Res models indicate temps have nearly leveled off with lows only expected to be a few degrees cooler. This will keep a relatively dry east to northeast flow in the low levels and this should also keep mainly VFR conditions through the evening hours. Overnight, frontal system will begin to move back north as a warm front and move across the forecast area by 27/18Z.
Warm front is then expected to move through by sunrise from south to north with a few more showers along the boundary.
545 PM CST Mon Feb 26 2018 Influence from a high pressure system centered across the central Appalachians this evening will keep the weather very quiet across southern Wisconsin. High pressure extending along the Ohio river Valley overnight will keep south to southwest flow across the region through tomorrow. A weak cold front will approach southern WI late Tuesday afternoon.
Otherwise, the previous forecast of gradually increasing clouds from the west through the day tomorrow looks on track, with rain chances increasing quickly in western zones in the afternoon as warm front returns from the south.
High pressure over Indiana this afternoon is expected to slowly sag southeast to the Virginias tonight and Tuesday. This will bring dry weather to Indiana through Tuesday evening as the high departs.
Large area of high pressure remains centered along the Ohio Valley this afternoon. with pronounced surface ridging extending northward thru the Western Great Lakes region. Broad upper level ridge axis remains upstream over the Upper Mississippi Valley. Low level pressure gradient will tighten tonight between the high centered well to our south and an area of low pressure moving eastward thru Ontario. only expect overnight lows to fall into the upper 20s in Eastern Upper Michigan and into the lower 30s across Northern Lower Michigan. Temps will be cooler (but still well above normal) across Eastern Upper Michigan where clouds and the cold front will arrive sooner.
638 PM EST Mon Feb 26 2018 The cold front will push offshore tonight, but a few showers will remain possible this evening.
However, due to the erraticness and slow movement of the boundary expect low ceilings to be a problem throughout tonight due to the high low level moisture values from the rains earlier today and the generally light and variable surface winds.
A break in the active weather pattern tonight through Tuesday as short wave upper level ridge moves over the region. After morning fog, Tuesday will be sunny under a short wave upper ridge from the northwest.
549 PM EST Mon Feb 26 2018 High pressure will bring dry weather and mild weather through Tuesday night.
Typical south wind in the immediate Red River valley keeping it the coolest this afternoon with temps near 30, while east and west quite a bit warmer as winds more southwest. Low pressure is in central Manitoba this aftn moving east with a weak cold front southwest thru Brandon MB and into NW ND. A tad cooler behind this front. A bit cooler Tuesday but sunshine once again so warmest likely in the trees.
550 PM CST Mon Feb 26 2018 As high pressure moves east toward the Mid-Atlantic area and low pressure deepens across the High Plains, southerly flow will increase across the Central Plains tonight into Tue. As the column dries Tue night into early Wed we may see some lingering drizzle as the sfc layer is progged to remain saturated in the vicinity of a cold front meandering across the area. Temperatures may approach freezing near KRSL with some low probabilities for light freezing drizzle, elsewhere temperatures are expected to remain above freezing.
A relatively flat ridge aloft exists over the Gulf Coast with quasi-zonal flow aloft.
624 PM EST Mon Feb 26 2018 High pressure will bring clear skies and light winds through Tuesday. Lows tonight will be in the low 30s.
629 PM EST Mon Feb 26 2018 High pressure tonight and Tuesday.
Otherwise, winds are expected to increase overnight with the development of the low level jet. Temperatures will be mild tonight, due to increasing moisture and cloud cover, with lows mainly in the lower 50s. Highs on Tuesday will range from the upper 60s east, to the low to mid 70s over western sections.
930 PM EST Mon Feb 26 2018 High pressure over the Ohio Valley will slowly drift eastward by mid week.
The exception was the Highway 20 corridor, where readings in the upper 40s were common. After a mild day, expect overnight temperatures settling in the low to mid 30s, about 10 to 15 degrees above normal for the date. On Tuesday, southerly winds and warm air advection will strengthen ahead of a cold front, producing an even milder day. Expect afternoon highs from the low 50s north, to low 60s in the southern counties.
550 PM CST Mon Feb 26 2018 Dry and mild weather will continue through tomorrow as high pressure moves off to the east. Southerly winds will return and this will bring warmer temps to the area by Tue afternoon, with most areas seeing highs in the 60s.
A low pressure system approaching from the northwest will continue the breezy conditions into this evening.
Temperatures will once again fall nicely over the snow cover in northern Iowa with readings remaining above freezing in southern Iowa.
A few leftover patches of light showers/drizzle remain across Central Alabama as the trough continues to move eastward. Much cooler temperatures with the drier air can be expected tonight with most locations dropping down into the 40s.
Bumped highs above guidance as south winds and clear skies today and tomorrow will push the high temps well above normal. Walsh Isentropic ascent ahead of the aforementioned low pressure system will spread showers and isolated/scattered thunderstorms across MO/IL as early as Tue night even though the upper low itself will still be located over the desert southwest. Quiet weather is then expected on Fri and Sat across most of the area due to upper ridging.
As the upper level low continues to sag southeast more moisture is expected to ride up and over the Sierra and interact with this front.
This will keep a relatively dry east to northeast flow in the low levels and this should also keep mainly VFR conditions through the evening hours. Overnight, frontal system will begin to move back north as a warm front and move across the forecast area by 27/18Z.
Temperatures are a bit cooler than the hourly trends would suggest, but this should correct itself by shortly after midnight as moisture advection continues through the morning. PoPs will be the highest in the 12z-18z time range with 60s across much of the central CWA. The highest rain chances will shift to the northern area in the afternoon as the lift/showers and possible storms exits the area. The warmer temperatures will be in the southern counties. Lows Tuesday night will be unseasonably warm, in the lower 60s.
High pressure has settled over the Mid-South resulting in a beautiful day across the Mid-South with clear skies, light winds and temps mostly in the lower 60s.
828 PM EST Mon Feb 26 2018 Early evening water vapor satellite imagery and regional surface observations are showing that the cold front is nearing the northern extent of the forecast area over the Nature Coast. Overall, the forecast looks on track with slightly cooler temperatures (but still well above normal) tomorrow. Fog and low stratus will be possible overnight tonight ahead of a weak cold front moving southeast into the region. A weak cold front currently moving south into the waters will stall across the central Gulf tonight, resulting in somewhat variable winds.
The low-level flow will continue to push this boundary to the northwest tonight. As the higher-dewpoint air shifts west late tonight, it should encounter cooler air (where clear skies and dry air have allowed more radiational cooling to occur) over far western Oklahoma.
PoPs will be the highest in the 12z-18z time range with 60s across much of the central CWA. The highest rain chances will shift to the northern area in the afternoon as the lift/showers and possible storms exits the area. The warmer temperatures will be in the southern counties. Lows Tuesday night will be unseasonably warm, in the lower 60s.
Winds aloft will remain elevated overnight as an upper level trough approaches from the west. Overall the highest snowfall amounts will be three to four inches atop the Mogollon, Jemez, and Tusas Mountains.
A cold front has moved out over the Gulf and will remain there just to the south of the forecast area through tonight, but begin to lift back toward the coast on Tuesday. With the front lifting northward to the coast and into portions of the forecast area on Tuesday, dewpoints will rebound into the 50s and 60s, with daytime highs on Tuesday similar to today, rising into the low to mid 70s.
358 PM MST Mon Feb 26 2018 Current surface analysis shows low pressure over western Manitoba, with a cold front stretching southwest across western ND into southern MT. Upper level analysis shows a large scale trough over the western US, with southwest flow aloft from the Rockies into the Plains. The trough to the west will dig south into the southwest US and then track east across the southern Plains and southeast US mid to late week. Northern stream flow over our region will remain near zonal and mainly dry, with some ridging moving across our area later in the week.
This trend is expected to continue into Tuesday as flow aloft remains southwest to westerly and southerly at the surface in advance of a cold front dropping south from the northern plains.
611 PM EST Mon Feb 26 2018 High pressure will build across the region through Tuesday.
Tuesday will be 5 to 10 degrees cooler than today behind the cold front.
/Issued 241 PM EST Mon Feb 26 2018/ Disturbance and associated precip has had rapid progression in already exiting the eastern part of the CWA so have trended now to dry majority of fcst period as high pressure should quickly dominate the regime.
349 PM MST Mon Feb 26 2018 The latest water vapor loop showed a upper trough digging south across the far western CONUS, with west to southwest flow aloft over the Intermountain West and Rockies.
1009 PM EST Mon Feb 26 2018 There were a few light showers north of the Lower Keys and in Florida Bay during late afternoon and early evening, but they rained out several hours ago.
Otherwise, southwest flow aloft will remain moderately strong as an upper level low drops south over California tonight and Tuesday. As the low reaches its lowest latitude over Srn CA late Tuesday and begins to move eastward, and weaken, the cull and associated long wave trough will move east over eastern UT Tuesday night. Increased cloud cover Tuesday night will mean warmer overnight low temps.
Tuesday, as high pressure builds to our north, expect gradient winds to pick up a bit by the morning and help the fog to dissipate.
941 PM EST Mon Feb 26 2018 High pressure will build across the region through Tuesday.
619 PM CST Mon Feb 26 2018 A weak cold front will move in from the northwest tonight with a cooler area of high pressure building in on Tuesday. This cold front will result in a period of clouds overnight but otherwise limited impacts. Ridging builds into the area for Tuesday night, and with dry air aloft, we should have good radiational cooling conditions for the overnight period.
Slightly cooler and drier air will continue to filter into the region behind today's cold front. Lows will range from the lower 50s north to the upper 50s south.
Frontal passage to bring cooler/near normal temps on Tuesday. High pressure will continue to build north of the region on Tuesday with NE winds becoming breezy at 15-25G30 mph along the coast and 10-15G20 mph inland and widespread low clouds will continue through most of the day with some sunny breaks developing during the mid-late afternoon hours allowing a temps to bump upwards about 5-10 degrees with Highs in the mid/upper 60s along the coast and across SE GA, further inland across portions of NE FL along the I-75 corridor may see highs into the lower to middle 70s.
A disturbance rides through the area Tuesday night bringing a chance for mountain snow showers, but little more than increased cloud cover over the lower elevations/plains.
Overnight lows in the low to mid 60s should remain below warm minimum records for most sites. The low level onshore flow will support isolated to scattered showers moving toward the coast.
Weak high pressure remains in control tonight into midday Tuesday providing dry and quiet weather.
While the low level flow returns to a southerly direction during the day, vfr flight should be maintained with extremely limited moisture depicted in model solutions below fifteen thousand feet.
The latest surface analysis had a high pressure center in southeast OH, with a ridge axis along the Ohio River valley. Parts of southeast IL are very close to the ridge axis, so with a light wind and clear sky, their temperatures are dropping off pretty rapidly this evening. Made adjustments to the hourly temperature forecasts to account for this and nudged the lows down a bit near the IN border. is cloud free this evening due to the high pressure center. Dry and mild weather will continue through tomorrow as high pressure moves off to the east. Southerly winds will return and this will bring warmer temps to the area by Tue afternoon, with most areas seeing highs in the 60s.
A 1040mb high pressure over southeast Alberta will move across eastern Montana tonight and into southern North Dakota Sunday. Otherwise, expect mostly sunny conditions with highs in the lower 20s north to lower 30s southwest.
755 PM EDT Sat Mar 31 2018 Precipitation chances return tonight with the passage of a cold front. Dry and cooler conditions can be expected through much of Sunday before low pressure brings snow on Sunday night. Otherwise, precip chances will be on the increase with the encroachment of a cold front. resulting in dry and cooler than average weather. particularly over the ridge counties.