Aikyam-Lab/Synoptic-Bench huggingface dataset:
1042 PM CDT Wed Oct 26 2016 The cold front that moved across the region late last night and early this morning has continued its slow southeastward movement towards the Kansas/Oklahoma border this afternoon. Tonight as the surface cold front slowly pushes southward of the Kansas/Oklahoma border, high pressure will briefly clip the region and allow for clear skies and ample radiational cooling to occur. With return flow expected to develop Thursday/Thursday night, as lee troughing becomes established along the northern and central Rockies and upper-level ridging builds across the region, low- level south to southwesterly flow will usher in warming temperatures aloft, with summer-like thickness values.
1005 PM MDT Wed Oct 26 2016 Broad upper ridge covers the western CONUS. Mild and dry weather will continue as upper ridge axis moves over the central CONUS Thursday. Low-level flow will become southwesterly tonight and increase on Thursday, bringing warmer air to the region.
843 PM MDT Wed Oct 26 2016 Dirty ridge (high pressure with considerable high level clouds) prevails over region this evening. Ridge aloft today will give way to stronger moist southwest flow aloft overnight into tomorrow. Tonights lows will stay in the lower 50s for elevated locations across the plains, though river valleys will probably make the lower 40s. not that cold) cold front moves into the area Thursday night.
/ISSUED 343 PM CDT Wed Oct 26 2016/ The 5H ridge centered over the Gulf of California will begin to gradually expand eastward over the Lone Star through the remainder of the week.
1240 AM EDT Thu Oct 27 2016 High pressure will continue to extend over Eastern North Carolina through tonight.
719 PM CDT Wed Oct 26 2016 Early-afternoon water vapor imagery revealed a de-amplifying mid- level trough from the upper Great Lakes to Ozark Plateau with an upstream ridge gradually building east through the Interior West. ridge will begin to flatten as it edges east of the Rockies, hastening the deepening of a lee trough over the High Plains. As a result, strengthening southwest low-level flow will promote notably warmer temperatures, especially across our western counties where highs will reach the mid to upper 70s.
943 PM MDT Wed Oct 26 2016 With mostly clear skies tomorrow, 700 mb temperatures increasing by about 5 degrees C and model guidance showing a warmer trend, have warmed max temperatures slightly tomorrow. An upper level ridge will continue to build over the Great Basin region through the period. Winds will remain light with some gusting up to 25 mph over the higher terrain in the afternoon and evening.
Expect VFR conditions to continue for the next 24 hours as the 500mb ridge across northern Mexico and the southwest United States provides subsidence across the region. /issued 252 PM CDT Wed Oct 26 2016/ SHORT TERM (Tonight through Thursday Night): 500mb ridge across northern Mexico into the southwest United States will continue to provide subsidence across the CWA tonight into Thursday. A 500mb inverted trough/low is expected to move into the Bay of Campeche and the southwest Gulf of Mexico Thursday into Thurs night.
WV imagery indicates a broad upper level ridge of high pressure transitioning slowly eastward across the Intermountain West. Near the surface, a lee side trough of low pressure is slowly developing across eastern Colorado. A large mid-upper tropospheric ridge will prevail through Thursday, and this will lead to continued above-average temperatures. A high pressure ridge will shift from northwest to southeast across the Central Plains tonight, and this will result in a prolonged period of light winds tonight. The drier airmass, very light winds, and clear skies should allow temperatures to dip down to the lower to mid 40s most locations (especially along/north of Arkansas River). On Thursday, the leeside trough will redevelop with a shift in the surface wind back to the south/southwest.
716 PM EDT Wed Oct 26 2016 A narrow ridge of high pressure will build in from the west overnight and will slide off to the east on Thursday.
650 PM CDT Wed Oct 26 2016 The cold front that moved across the region late last night and early this morning has continued its slow southeastward movement towards the Kansas/Oklahoma border this afternoon. Tonight as the surface cold front slowly pushes southward of the Kansas/Oklahoma border, high pressure will briefly clip the region and allow for clear skies and ample radiational cooling to occur. With return flow expected to develop Thursday/Thursday night, as lee troughing becomes established along the northern and central Rockies and upper-level ridging builds across the region, low- level south to southwesterly flow will usher in warming temperatures aloft, with summer-like thickness values.
Will transition from high level bkn cirrus slowly to stratus around 5 kft, before transitioning back toward SKC conditions approaching 27/24Z, as upper level ridging influences build across the region.
836 PM EDT Wed Oct 26 2016 Low pressure will bring rain to the region tonight and Thursday.
Expect dry weather under high pressure through Thursday.
807 PM EDT Wed Oct 26 2016 A low pressure system pushing across across northern Ohio will bring showers and possibly a thunderstorm tonight into Thursday morning.
Dry conditions will persist over our area tonight, with the exception of a few showers possible offshore of the FL Panhandle, enhanced by a weak upper trough moving through that area. Patchy fog still appears possible across much of our area early in the morning with ample low level moisture and light to calm winds, although the high clouds may be a limiting factor. Expect lows in the low-mid 60s across our area.
Otherwise, VFR conditions to prevail across area terminals through the forecast period as upper-level ridge builds across the region.
807 PM EDT Wed Oct 26 2016 Cold front crosses Thursday with showers.
900 PM CDT WED OCT 26 2016 Cold front has pushed eastward past the Illinois River this evening. Lows should reach the mid 40s most areas I-55 westward ranging up to the low 50s I-70 southward. Cold front over southeast IA, still moving to the east and will be crossing through region overnight.
946 PM MDT Wed Oct 26 2016 With mostly clear skies tomorrow, 700 mb temperatures increasing by about 5 degrees C and model guidance showing a warmer trend, have warmed max temperatures slightly tomorrow. An upper level ridge will continue to build over the Great Basin region through the period. Winds will remain light with some gusting up to 25 mph over the higher terrain in the afternoon and evening.
1023 PM EDT Wed Oct 26 2016 Update/Marine A low pressure system moving east across the Great Lakes region will continue to bring rain through this evening and mixed rain and snow north of interstate 96.
755 PM EDT Wed Oct 26 2016 A narrow ridge of high pressure will build in from the west overnight and will slide off to the east on Thursday.
Current radar, web cameras and observations still have snow falling over the high mountains. The wind fields over the plains suggest a Longmont anticyclone is in place currently. The low level pressure gradient is not real strong and wind speeds are not warning criteria, but it will continue to blow. The QPF fields have a tad of measurable snowfall over the high mountains this evening, then nothing overnight and Thursday. Will leave the advisory going in the high mountains with the light snow still falling and the blowing snow.
425 PM CST Wed Dec 28 2016 A northward expanding warm front has given way to an unseasonably warm afternoon across almost the entire region except for extreme northern zones where the front has been hung up all afternoon just south of the Ouachitas. This has resulted in a wide temperature spread from our southern tier in the mid to upper 70s while our far northern areas have been held down in the 50s and 60s just north of the warm front. Meanwhile, a cold front continues to move our way from the northwest and is pushing right along the Red River of south central Oklahoma and north central Texas as 22Z. This threat will diminish after midnight with the cold front quickly shifting southeast out of the region.
A long wave trough is transversing the upper Midwest and the flow is slowly veering to the northwest. With the surge of cooler air tomorrow, there will also be fairly strong winds in the lowest 2-4km of the atmosphere. Picking up the forecast on Thursday night, the trough discussed in the short term will be departing to the east but we did hang on to some low pops in western Wisconsin for snow showers in cyclonic flow and cold air advection.
Then the strong cold front expected to move through between 10-12z Thursday morning, with strong northerly winds ~20-22 kts with gusts near or over 30 kts by 14-15z Thursday. Cold front progged to sweep across the area late tonight and early Thursday morning.
Dry, warmer weather is expected through Thursday with northerly breezes affecting parts of the lower Colorado River Valley.
524 PM CST Wed Dec 28 2016 Cold front making its way across the region pretty much on schedule. Big high pressure area over the Rockies and high plains will drift east as the upper trof moving through today deepens over the eastern US.
Boundary layer winds across the northern and central waters will shift to the southwest later tonight ahead of a cold front.
921 PM EST Wed Dec 28 2016 High pressure will move away from the area this evening.
310 PM MST Wed Dec 28 2016 Current radar, web cameras and observations still have snow falling over the high mountains. The wind fields over the plains suggest a Longmont anticyclone is in place currently. The low level pressure gradient is not real strong and wind speeds are not warning criteria, but it will continue to blow. The QPF fields have a tad of measurable snowfall over the high mountains this evening, then nothing overnight and Thursday. Will leave the advisory going in the high mountains with the light snow still falling and the blowing snow.
628 PM EST Wed Dec 28 2016 A cold front is expected to bring a brief period of rain and snow to areas mainly east of Interstate 69 later this evening. Mainly dry and turning cooler and breezy otherwise tonight into Thursday morning.
633 PM EST Wed Dec 28 2016 A cold front stalled just south of the area may return northward as a warm front tonight ahead of a stronger cold front that will cross the area Thursday.
907 PM EST Wed Dec 28 2016 A large upper level low is moving across the Northern Tier States and central Canada this evening. A lingering trough resides between the upper low and the Flroida Peninsula. Around the Keys and South Florida, earlier showers southwest of the Lower Keys have diminished.
Dry line/cold front movg into western sections with dewpoints in upper 50s and lower 60s.
I have opted to issue a dense fog advisory for the near shore waters and tidal lakes for tonight and early Thursday morning prior to the cold frontal passage.
1021 PM EST Wed Dec 28 2016 A cold front will move across the area on Thursday, with periods of rain and snow.
Sunny skies this morning are giving way to mostly cloudy skies as cloud cover streams in from the approaching trough and cold front. Convection is beginning to develop along the MS River Valley currently, and will continue to spread east ahead of the cold front this evening and overnight.
1048 PM EST Wed Dec 28 2016 A cold front will move across the area on Thursday. sleet and freezing rain will develop overnight and change to rain after sunrise Thursday.
634 PM EST Wed Dec 28 2016 High pressure will move away from the area this evening.
Upper air analysis shows broad upper trough across the north central CONUS with the main axis over the Dakotas.
Down at the surface, a warm front is lifting across north across the Tennessee and Mississippi border. Currently the aforementioned warm front is lifting north. The best forcing will be along the cold front as the wind shear becomes nearly parallel to the mean flow, and any breaks in the line could result in bowing segments with embedded instances of damaging winds.
410 PM CST Wed Dec 28 2016 Cold front moving through the Plains States showing about 30-35 kt progression and progs through KBTR around midnight and mouth of the river by around 3 am.
923 PM CST Wed Dec 28 2016 Scattered to numerous showers continued along and south of the I-40 corridor at midevening, ahead of a surface cold front. The area of showers will translate southeast along and ahead of the cold front into the early overnight. Patchy drizzle and fog will be will continue in the vicinity of the cold front, before giving way to clearing skies later this evening and early overnight. Down at the surface, a warm front is lifting across north across the Tennessee and Mississippi border. Currently the aforementioned warm front is lifting north. The best forcing will be along the cold front as the wind shear becomes nearly parallel to the mean flow, and any breaks in the line could result in bowing segments with embedded instances of damaging winds.
448 PM CST Wed Dec 28 2016 Weak cold front currently moving through the region with all observation sites now reporting northwest winds in its wake. Afternoon mid-level clouds this afternoon should clear overnight as high pressure begins building across the High Plains and points east. Quiet weather to persist for the remainder of the week as aforementioned high pressure remains in control.
313 PM PST Wed Dec 28 2016 High pressure will continue to create valley inversions, light winds, and periodic reductions in air quality in some valleys through Thursday.
Weak high pressure will keep dry conditions and temperatures near normal through Thursday.
531 PM CST Wed Dec 28 2016 /00Z TAFS/ The cold front is moving south across the Red River at 2330Z. /issued 325 PM CST Wed Dec 28 2016/ (Today and Tonight) Record warm day in San Angelo this afternoon, with the high of 84 degrees breaking the old record of 81 degrees. A cold front still set to move across the area tonight and drop temperatures significantly for tomorrow.
Cold front down along Tennessee River at 0230z with showers and isolated thunderstorms covering Middle Tennessee. A cold front will sweep through the region late tonight.
especially later this evening across SERN AR as the new cold front pushes SE through the state.
651 PM EST Wed Dec 28 2016 A cold front will move across the area on Thursday, with periods of rain and snow.
345 PM MST Wed Dec 28 2016 18Z Water Vapor imagery/RAP analysis indicated short wave trough sliding into to southern Nebraska. A secondary cold front had initially stalled near the KS/NE line this morning and with afternoon heating and mixing strong northerly winds have developed across the region which have somewhat masked its position. To start off, there are a few cold fronts that will pass through the region.
915 PM EST Wed Dec 28 2016 Quiet WX pattern overhead as a weak H100-H70 anticyclone centered over the central peninsula maintains a weak pgrad acrs the region. Evng RAOBs map the anticyclone quite well with wrly flow over the panhandle.
845 PM MST Wed Dec 28 2016 18Z Water Vapor imagery/RAP analysis indicated short wave trough sliding into to southern Nebraska. A secondary cold front had initially stalled near the KS/NE line this morning and with afternoon heating and mixing strong northerly winds have developed across the region which have somewhat masked its position. To start off, there are a few cold fronts that will pass through the region.
759 PM CST Wed Dec 28 2016 We will see cooler air spreading into Kansas for tonight which will lower the daytime highs on Thursday, however values will still be above normal for late December averages.
Cold front progged to sweep across the area late tonight and early Thursday morning.
Below the mid-level dry layer, the atmosphere remains fairly moist and this low level moisture has kept precipitable water values higher than seasonal averages at 1.
Cold front currently in the Panhandle/South Plains will fropa KMAF ~ 05Z, and KFST/KPEQ at or before 09Z. /issued 250 PM CST Wed Dec 28 2016/ A very warm day today despite high clouds over the region, thanks to a combination of downsloping westerly flow and compressional warming ahead of an approaching cold front. The cold front, which is currently just south of Amarillo, will continue its southward push this afternoon and evening. Thus, lows overnight will be cooler than last night, particularly for locations north of I-10, where temperatures are expected to drop into the 30s. Thursday will be much cooler behind the front, with highs ranging from the upper 40s across portions of Southeast New Mexico and higher terrain to mainly 50s elsewhere. These temperatures will be roughly 20-30 degrees cooler than today.
612 PM EST Wed Dec 28 2016 A cold front will bring a mix of rain and snow to the area tonight and early Thursday.
510 PM CST Wed Dec 28 2016 At 3 PM, a short wave trough was moving through the Mid Mississippi River Valley. 12z models are in good agreement that a Canadian cold front will move southeast through the area tonight. The snow squall parameter is the highest during the late morning and afternoon.
Excess cloud coverage is leading to warmer temperatures this evening as it prevent radiational cooling. GAH PREVIOUS SHORT TERM DISCUSSION: The long-wave upper-level pattern across CONUS this evening consists of a ridge centered over the West Coast and a trough extended south from the Hudson Bay low. Thursday the ridge drifts east to bring in warmer air aloft, but a cold start to the day - due to overnight cooling from clear skies - and the lack of mixing due to light winds will bring about a mild day, but slightly cooler than Wednesday and but closer to normal.
00 UTC surface analysis shows a weak warm front located just north of the region, extending from near Memphis, TN east- southeastward to Savannah, GA. Back to the west, a cold front across the TX/OK border will rapidly advance eastward overnight. As ascent increases ahead of the cold front an area of showers with isolated thunderstorms is expected to develop across LA/MS and then move near our western forecast area before sunrise.
548 PM EST Wed Dec 28 2016 A cold front stalled just south of the area may return northward as a warm front tonight ahead of a stronger cold front that will cross the area Thursday.
Weak high pressure will move east of the region tonight, with another round of sea fog likely. A cold front will move southeast across area waters on Thursday.
726 PM EDT TUE JUL 26 2016 Warm high pressure remains over the area through Wednesday with temperatures warming into the 80s and 90s.
Latest NAM shows the upper trough edging closer to Middle Tennessee tomorrow and tomorrow evening, which will provide additional forcing and justifies tomorrow's higher POP's.
904 PM CDT TUE JUL 26 2016 High pressure will provide a persistence forecast for tonight.
/Issued 329 PM CDT TUE JUL 26 2016/ An upper level 594 decameter high pressure system sitting over the 4 corners region will continue to provide east to northeast flow across the Panhandles. In-conjunction with a south to southeast surface flow that will bring higher Td's to the region, latest 26/12Z shows diurnally driven convection with any localized convergent boundaries across the Panhandles with the best chances across the eastern Panhandle with the highest moisture values.
another mild night with some mostly to partly cloud conditions with lows in the low to mid 70s again. Chattanooga Airport, TN 76 91 75 87 / 20 40 60 70 Knoxville McGhee Tyson Airport, TN 75 92 74 86 / 30 30 50 70 Oak Ridge, TN 75 91 74 84 / 30 30 50 70 Tri Cities Airport, TN 71 92 70 86 / 30 40 40 70.
A mean layer analysis reveals the subtropical ridge has built west across the Florida Peninsula. The low levels are sufficiently moist, although dry layers invade above 850 mb. Riding along the southern flank of the subtropical ridge are undulations in moisture and curvature, see loops of MIMIC TPW.
1100 PM EDT TUE JUL 26 2016 Strong high pressure aloft will extend over the Southeast U.
746 PM CDT TUE JUL 26 2016 High pressure is still dominating the area, with quiet and mild to seasonable temperatures. At 850mb, a dry air intrusion was noted from MN into the mid- to lower MO River valley, with moisture returning through KS toward the High Plains of NE/SD/ND.
1250 AM EDT WED JUL 27 2016 Atlantic high pressure will prevail through much of the week while a weak trough persists inland. It will remain warm and humid with lows ranging from the mid 70s inland to the lower 80s at the beaches.
There are though, scattered showers and thunderstorms over Wyoming and stronger storms moving into Northern Nebraska along a cold front. An upper level high over the Great Basin will produce a northwest flow aloft over Colorado. A cold front will drop south across eastern Colorado late tonight and Wednesday morning. Upper high remains centered over the southern great basin through the end of the work week.
709 PM EDT TUE JUL 26 2016 High pressure over the region will keep above normal temperatures in the forecast through the end of the week. An upper level ridge will remain over the southeastern overnight. Atlantic high pressure will ridge into the region. Warm air aloft combined with weak instability and subsidence beneath the upper ridge will hold dry weather across much of the area. High pressure will continue to be the dominant feature both aloft and at the surface on Wednesday. Subsidence aloft will limit convective development with only isolated diurnal convection expected, focused mainly along the lee-side trough and also along the sea breeze.
A weak upper ridge will move into the Southeast Oregon and Southwest Idaho tonight through Wednesday, accompanied by mostly clear skies and light winds.
Some redevelopment is possible after 06Z though in southern MS/LA in the vicinity of the weak low pressure core. Overall pattern looks to remain mostly unchanged through the period with the prevailing westerlies remaining over the northern CONUS and elongated ridge over the southern CONUS. In the elongated ridge, a weakness will exist over the lower MS river valley in the form of a cyclonic shear axis. This moisture has been surging northward in the flow around these features and should lead to a relative ease of convective development due to sufficient convergence in the low level wind field, as has been the case already over the southeast.
(Issued 117 PM CDT TUE JUL 26 2016) Water vapor imagery and stream flow indicate an upper high off the southeast U. coast and a ridge extending across the TN valley. A trof axis was now working northward along the central and western Gulf Coast, dividing what was a more expansive ridge across the entire southern CONUS.
930 PM EDT TUE JUL 26 2016 Strong high pressure will remain centered over the southeast United States through the end of the week.
Convection could continue into the evening hours on Wed as well due to the proximity of the upper level trough and the myriad of boundaries that will likely be present.
This area of convection may briefly merge with a line of storms tracking east from the panhandle with the northern area becoming more dominant by late evening with support from the nose of the low level jet. Temperatures will be much cooler north of the front with highs Wednesday in the lower 80s. Upper ridge has retreated over the desert southwest placing the northern plains in fast northwest flow with chances for thunderstorm development nearly every day.
1045 PM EDT TUE JUL 26 2016 High pressure will cross the region overnight.
626 PM CDT TUE JUL 26 2016 The weak cold front that has sagged into the forecast area so far today has been generating some weak showers with a few rumbles of thunder along it. Wednesday the cloud cover and precipitation chances should keep temperatures cooler than today, and have temperatures mainly in the 70s. Cooler late this week as high pressure builds in from the north. Late in the weekend warmer air returns as the high pressure moves off to the east and southerly winds prevail.
947 PM EDT TUE JUL 26 2016 High pressure was overhead and will move off to the east on Wednesday.
807 PM EDT TUE JUL 26 2016 Strong high pressure will remain centered over the southeast United States through the end of the week.