Aikyam-Lab/Synoptic-Bench huggingface dataset:
A large ridge of high pressure moving through the western US and central plains regions will dominate the weather pattern into mid-week and provide northeast Montana with dry and warm conditions.
604 PM CDT Sun Sep 25 2016 Surface cold front associated with an upper level trough will continue its march eastward tonight, firing showers and a few thunderstorms along and ahead of it.
626 PM EDT Sun Sep 25 2016 A large area of high pressure over the area will result in another cool night across the Keystone state.
553 PM EDT Sun Sep 25 2016 Showers and scattered thunderstorms can be expected with a Monday cold front. Dry advection will wane this evening with dewpoints likely creeping up from the southeast overnight as more moist marine air advances northward up the east side of the ridges. Fries A deepening mid level trough is projected to close over the Northern Great Lakes on Monday as it drives a cold front across the Upper Ohio.
Water vapor loop showing drying aloft wraping around the upper low entering the Red River valley and have seen winds pick up a tad more with 40+ mph gusts and sustained winds 30 mph at a few sites around Grand Forks and fargo. Also will hang on to higher pops late aftn/early eve into the northern RRV and NW MN as another area of showers now dropping back southeast around the upper low across northeastern ND. Lows in the low-mid 40s tonight.
A warming trend continues over central California this afternoon as upper level high pressure off the California coastline moves east. Temperatures this afternoon were running between 6 and 11 degrees warmer compared to yesterday afternoon, with most San Joaqin Valley and desert locations well into the 90s.
339 PM MDT SUN SEP 25 2016 After a busy end to last week, this week starts off very pleasant as high pressure builds in bringing a return to sunny skies and warmer temperatures. While we experience this weather today, a weak upper level disturbance will carve out a closed low over the Arizona, New Mexico, and old Mexico border. This low won't pose any threat to us in the short-term but will mid-week onwards.
605 PM CDT Sun Sep 25 2016 Surface cold front has moved through the forecast area, with cooler and drier air advecting in behind the boundary. A slow- moving highly amplified upper trough evolving over the Great Lakes into the Ohio Valley region will supply the area with reinforcing shots of cool air during the week with persistent northwesterly to northeasterly H85 flow, and dry atmospheric moisture resulting in no appreciable weather expected through the period.
357 PM CDT SUN SEP 25 2016 A broad upper trough continues to move along the US/Canada border in the Northern Plains while a southern stream low has cut off over Northwest Mexico. To the east, an upper ridge is over the eastern half of the country with a weak mid-level ridge over the western tip of the Florida Panhandle. At the surface, a cold front was located just east of the Interstate 35 corridor in Texas and extended north-northeast through Eastern Oklahoma and into Northwest Arkansas and Southwest Missouri. A plume of deep layer moisture is being drawn northward by the Plains and Mexico troughs, which has aided in the development of widespread convection along the cold front.
Northwest winds will continue to diminish as high pressure moves in from the west. Latest analysis shows the upper trough has moved eastward over Manitoba and the eastern Dakotas/western Minnesota with an upper ridge building over the western CONUS. The upper ridge will begin to build over the area on Monday, producing clear skies and warm temperatures. Strong upper ridging combined with a slowdown in the upper pattern will bring mainly dry weather to the region through much of the work week.
844 PM EDT Sun Sep 25 2016 High pressure to the north will extend over the area through Monday.
A strong upper ridge will move across the area Monday for a warm and mainly sunny day.
922 PM MDT Sun Sep 25 2016 Upper level ridge of high pressure with axis extending north through ID will maintain a dry and stable NW flow aloft across the region tonight.
High pressure over the area is bringing clear skies and warm conditions. Monday high pressure will start to shift east and more marine influence is expected at the coast. Late in the week rain is possible and much cooler temperatures are expected. High pressure and offshore flow are bringing plenty of sunshine and warm temperatures to the region this afternoon. This will be shortlived however, tonight the ridge starts to edge off to the east and at some point late tonight this will likely allow some coastal clouds back onto the coast north of Cape Mendocino.
This evening's regional surface analysis showed a weak ridge along the Piedmont. Vapor imagery and upper air data showed an upper level low centered near Pensacola, and much of the dry air which was over our forecast area 24 hours ago has been modified.
248 PM CST Mon Dec 26 2016 Upper flow remains on the quick side with a deep upper low moving northeast into Ontario and another making slow progress toward southern California. Dry conditions and unseasonably warmer temperatures can be expected for this upcoming week.
1134 AM CST Mon Dec 26 2016 The vicious cyclone that has been the "Star Of The Show" for about the past 4 days was centered over the Southeast ND/Western MN border at 2 AM CST and continues to lift northeast. The upper deck wave will push a cold front southeast across KS Wed Night but with moisture lacking only a wind shift would signal the front's arrival/passage. Thu-Fri Night: All will remain quiet as fairly strong high pressure moves south-east across KS.
353 PM EST Mon Dec 26 2016 A cold front will move east across the area this evening and early tonight. High pressure will move east across the Ohio Valley Tuesday night.
Temperature trends seem reasonable given expected trend in cloud cover and slightly cooler push of air from the north, the leading edge of which was from Copan to Red Rock at 16z.
Expect temperatures to gradually warm due to weak high pressure over the area through the middle of this week, though mainly seasonal, while dry conditions continue. However, the weather becomes more unsettled by late this week as low pressure systems are expected to move over the region.
Will carry VCSH at all terminals this afternoon and maintain at AEX overnight ahead of a cold front dropping into central Louisiana. Elevated serly/srly winds are expected again through the afternoon as the area remains in a good gradient between high pressure along the East Coast and low pressure over TX and the cntl conus. Will continue to hold on to the low end chance for showers/drizzle and will even carry a mention of thunder this afternoon across the northwestern zones where the best chance for rain will be found.
Mostly sunny conditions will prevail across the district today, with afternoon highs around the bays in the lower to mid 50s.
1039 AM MST Mon Dec 26 2016 Sustained and peak winds have diminished across central Laramie County by mid morning, and allowed the High Wind Warning to expire. Wrap around moisture from the powerful low pressure system in eastern South Dakota still continues to bring snow into our northern and northeastern counties.
Otherwise, a cold start to the morning for all areas with mostly clear skies outside of the low clouds and fog. This is especially the case where the low clouds are. Expect the lower conditions to improve to VFR late this morning and early this afternoon. A warm front will move to the north of the area tonight, but will bring areas of MVFR cigs in rain to the coast with ceilings gradually lowering inland to the Cascades. Terrain will become obscured by Tuesday morning as a cold front moves onshore and then inland Tuesday afternoon.
A weak weather disturbance will graze northern Utah Tuesday before high pressure returns midweek. Valley inversions will start to develop today in weak ridging behind the exiting storm system. A weak storm system grazing northern Utah on Tuesday will bring a weak front through, weakening the developing inversions and bringing some light precip to the higher terrain of far northern Utah. However, behind that system high pressure is progged to become well established, lasting through much of the work week.
1217 PM EST Mon Dec 26 2016 The rain is expected to slowly taper off from northwest to southeast later this afternoon into early this evening as drier air settles in behind a cold front.
/issued 428 AM CST Mon Dec 26 2016/ An upper level ridge centered around Florida extends north to the Great Lakes and west to Mexico.
1121 AM CST Mon Dec 26 2016 Aloft: Vertically stacked low pres was over the Ern Dakota's and entering MN and was within the lifting/deamplifying longwave trof over the cntrl USA. Went with the cooler side of the guidance spread which maintain continuity with the prvs fcst. Light return flow develops with the high to the S. These westerly, downslope winds will help temperatures remain warmer.
Temperatures have overachieved this afternoon with strong pre- frontal SSW flow pushing most locations into the lower/mid-70s. Look for fropa this evening, with winds shifting to west and slacking off as the low-level jet is shunted east of the area. However, zonal flow aloft means those temps are still above normal! Tue night the high is nearly overhead, so it will be the coldest night of the week.
250 PM MST Mon Dec 26 2016 Water vapor loop showed the intense upper low that produced the cornucopia of winter weather on Christmas was located just north of MN. The pressure gradient between the front and a ridge over the intermountain west was sufficient to generate strong and gusty west to southwest winds for the wind prone areas of southeast WY.
On the other hand, several other locations held on to a stratus deck that developed last night, which caused our morning lows to be warmer than anticipated.
Moisture is increasing ahead of cold front now approaching the lower Ohio and western Tennessee valley.
A line of showers with an embedded clap of thunder or two has pushed generally east of the highway 65 corridor this morning. Although a cold frontal boundary should push through the area, we should remain mild today. As the fairly intense storm currently positioned across the Dakotas moves northeastward, a second cold frontal boundary will push through the area later today/tonight, which will shift our surface winds to northwesterly allowing for a cooler air mass to filter into the region overnight. Tuesday looks cooler than recent days, however, still pretty warm for this time of year as high temperature top out in the upper 40s and lower 50s.
the secondary line is associated with the weak cold front. This cold front will slowly sag south this evening and during the overnight hours. Temperatures will finally be cooler.
Mild temperatures continue in the mid to upper 60s lower elevations and mid 40s to mid 50s in the higher mountains. A cold front was moving into the Ohio and lower Mississippi Valleys with showers and thunderstorms moving across the lower Ohio Valley of western KY at mid afternoon.
Clouds on the increase this afternoon from west to east ahead of yet another low pressure system poised to move through the region on Tuesday with light to moderate snow. Temperatures will be colder today, especially in the lower valleys where highs will only be in the teens.
Updates today were mainly to try and time the approaching cold front and associated thunderstorm chances across the mid state. Better chances exist in southwest zones were instability will hold out a bit longer, but will not rule out some severe reports as the cold front crosses the region. A cold front is forecast to pass CKV around 07z, BNA around 09z, and CSV around 12z.
Ridging to the east has kept the area in southwest flow aloft with a steady flow of low level moisture, but it's not quite penetrating aloft.
Meanwhile at the surface the gradient will weaken as a cold front moves into the southeast states causing the easterly flow to become lighter.
1031 AM MST Mon Dec 26 2016 KGJX Doppler radar is indicating some light snow around the forecast area this morning as a weak upper level trough passes through central and northern Colorado. Both the 0600Z NAM12 and GFS20 show this weak trough pulling through the area today, but neither model produces much QPF with this feature.
With the strong gulf ridging in place, it will be hard to push further south through the day tomorrow, and as the upper support exits to the northeast, the lift will be meager at best. A weak cold front will sink southward into northwest Alabama early this week and slowly slide through the area.
111 PM EST Mon Dec 26 2016 High pressure will ridge into the forecast area from the north through tonight.
108 PM PST Mon Dec 26 2016 High pressure aloft will bring fair, dry, and warmer weather through midweek with gusty easterly winds near the coastal foothills at times.
A cold front is nudging out of SE OK into NE TX and will keep a band, at times, of shwrs isold tstms slowly drifting ESE. /issued 1135 AM CST Mon Dec 26 2016/ Water vapor imagery shows a strong upper level low lifting north into Ontario this morning. with the associated trough extending well south in the Midwest and Plains states. a secondary disturbance moving around the back and southern side of trough will move into Kansas and Oklahoma later today. This front will bring some cooler temperatures to the region for Tuesday. but still believe most areas will be 8 to 15 degrees warmer than normal.
Drier air spreading into the area from the north and west will result in clearing skies this afternoon/evening with west wind becoming north this afternoon becoming light overnight as high pressure settles into the Southern Plains. Temperature trends seem reasonable given expected trend in cloud cover and slightly cooler push of air from the north, the leading edge of which was from Copan to Red Rock at 16z.
1110 AM EST Mon Dec 26 2016 High pressure will ridge into the forecast area from the north through tonight.
Updates today were mainly to try and time the approaching cold front and associated thunderstorm chances across the mid state. Better chances exist in southwest zones were instability will hold out a bit longer, but will not rule out some severe reports as the cold front crosses the region. Approaching cold front will move through this evening and overnight, which will bring chances for showers and thunderstorms during this TAF period. Kept lower cigs a little longer after the cold front in the morning hours, but models want to quickly bring VFR cigs in tomorrow morning for KCKV and KBNA. Winds will also flip around to be more out of the northwest after the cold front passes, but speeds will be below 10 knots by that time.
High pressure will be to the North Tonight. A coastal trough will linger through the night, providing a source of convergence for shower formation.
147 PM EST Mon Dec 26 2016 The rain is expected to slowly taper off from northwest to southeast later this afternoon into early this evening as drier air settles in behind a cold front.
Today Through Tuesday 09z subjective surface analysis indicates a cold front from just east of Harrison, to Fort Smith.
1135 AM CST Mon Dec 26 2016 Water vapor imagery shows a strong upper level low lifting north into Ontario this morning. with the associated trough extending well south in the Midwest and Plains states. a secondary disturbance moving around the back and southern side of trough will move into Kansas and Oklahoma later today. This front will bring some cooler temperatures to the region for Tuesday. but still believe most areas will be 8 to 15 degrees warmer than normal. Palmer For the 26/12z TAFs, scattered showers are developing ahead of an approaching cold front across most of the area except for North Central Louisiana.
Current air temperatures in most Keys island communities are near 80F, with dewpoint temperatures in the lower 70s, up a few degrees from yesterday. A sprawling continental high pressure system will prevail across the southeastern United States and western North Atlantic this afternoon and tonight.
145 PM EST Mon Dec 26 2016 High pressure is moving into the Gulf of Maine. A cold front over Indiana will cross the region Tuesday.
250 PM CST Mon Dec 26 2016 A strong low pressure system will continue to exit the region this evening. Warmer air will also begin to push into the northern plains with highs popping back into the 20s and 30s.
237 PM EST Mon Dec 26 2016 Rain shower coverage will increase tonight as a cold front crosses the region. Strong warm advection ahead of the approaching cold front has driven temperature 20 to 25 degrees above the averages today. Evening warmth will be offset by increasing rain chances as this systems cold front ploughs across the region. Wind gusts over the higher terrain may be problematical later tonight as inversion levels resulting from todays warm advection erode with rain and passage of the front.
A cold front will move southeast through the state with rain ending after the frontal passage.
just ahead of a weak cold front that is moving in from the N/C TX. The low temperature of 68 degrees was 19 degrees above normal.
1042 AM MST Mon Dec 26 2016 Sustained and peak winds have diminished across central Laramie County by mid morning, and allowed the High Wind Warning to expire. Wrap around moisture from the powerful low pressure system in eastern South Dakota still continues to bring snow into our northern and northeastern counties.
Louis bridge this hour after having cleared out somewhat a few hours ago. Frontal zone has become stationary this morning from southern Illinois through Arkansas to near the Dallas-Fort Worth metroplex but is beginning to surge eastward a bit as high pressure continues to build over the central plains.
251 PM EST Mon Dec 26 2016 High pressure will ridge into the forecast area from the north through tonight.
A highly amplified upper level ridge that has brought record warmth to our area will gradually flatten out through tonight, to be replaced with zonal flow at upper levels. Overnight lows should remain in the lower 60s across our area.
245 PM CST Mon Dec 26 2016 Winds will gradually relax into tonight as high pressure builds into the Central Plains tonight. High pressure will shift east, resulting increasing return flow and temperatures warming back above normal. Despite the warming, expect little in the way of melting with wet bulb temperatures well below freezing, especially north of I-90 where much of the ice remains. Long range models develop trough over the northern plains states keeping a westerly flow over the forecast area.
232 PM EST Mon Dec 26 2016 High pressure will ridge into the forecast area from the north through tonight.
250 PM MST Mon Dec 26 2016 A transitory short wave ridge will be zipping by over the next 24 hours and bring a temporary lull to the shower activity. The ridge sweeps eastward tomorrow afternoon and we begin to advect high level moisture back into the northern mountains.
249 PM CST Mon Dec 26 2016 A cold front has made it to around I-40 early this afternoon.
SHORT TERM (Tonight through Tuesday Night): Mid/upper level ridge over the south-central Gulf will retrograde to the west-northwest through the period bringing somewhat greater subsidence to deep south Texas.
Templer Upper trough over the Pacific Northwest continues to move east and drives a divergent SW upper flow over the area tonight. The upper low moves across southern Sask with showers mainly staying north of the border. NW flow and minor upper troughing may bring in an isolated shower to the area Saturday night. Temperatures over the weekend will be noticeably cooler with 850 mb temps about 10*C lower.
648 PM CDT FRI JUL 22 2016 Weak high pressure will remain in control tonight with clear to partly cloudy skies and generally light winds tonight.
/Issued 245 PM CDT FRI JUL 22 2016/ Diurnal convection continues to be main weather feature across portions of the region as the 598 decameter upper level high pressure system continues to compress and shift to the southwest. The highest probability of showers and thunderstorms will be across far western OK Panhandle and far northwestern TX Panhandle from this afternoon to late tonight.
545 PM MDT FRI JUL 22 2016 00Z TAF CYCLE Isolated -shra/tsra mainly near the high terrain of central and western NM will drift N/NE and dissipate thru 06Z. Main focus for -shra/tsra Saturday will again be near the high terrain and the northeast plains. High pressure in the mid and upper levels of the atmosphere will be directly over New Mexico through Saturday with above normal temperatures persisting, especially across the eastern plains where highs will rise to near daily record values.
Wind trends should follow the normal diurnal flucuations beneath a large upper ridge, with 12 to 17 knot speeds expected mainly in the afternoon and evening hours at DRT and speeds remaining below 12 knots at AUS. Otherwise, another day of above normal temperatures is taking shape with plenty of mid-afternoon readings already in the lower 90s to near 100 degrees.
mostly clear skies and light winds underneath high pressure were observed over Eastern Oklahoma and Northwest Arkansas. While the ridge of high pressure remains in place over the Southern Plains.
523 PM MDT FRI JUL 22 2016 19Z Water Vapor Imagery and RAP analysis indicated large 597 ridge centered over eastern New Mexico. A few storms will form off the higher terrain and push east tonight but with winds aloft weak and shear minimal not expect to see a lot of organization. Another round of elevated storms possible tonight along edge of H7 thermal ridge. Cold front will work its way across Nebraska through the day. Instability should be favorable for severe weather, but wind shear rather weak in warm humid airmass south of front/trough. Somewhat cooler temperatures are anticipated after the passage of a cold front over the weekend.
W to E moving cold front ahead of the trough has entered NW MT and will sweep east across the forecast area late this afternoon through early this evening. Primary threat from storms today will be strong winds due to a dry low-level airmass, particularly over SW MT with increasing winds aloft also contributing to the high wind threat.
1123 PM CDT FRI JUL 22 2016 This morning's H5 analysis had high pressure centered over the Oklahoma panhandle. North of the high, ridging extended north into the Dakotas. West of this ridge, a trough of low pressure was located over western Washington and extended south into northern California. Overall shear is quite weak again today within subtropical plume around upper level high pressure centered to our south, but surface based cape is very strong.
Chattanooga Airport, TN 75 95 74 95 / 30 30 20 40 Knoxville McGhee Tyson Airport, TN 72 93 74 94 / 20 30 20 30 Oak Ridge, TN 73 94 73 94 / 20 30 20 30 Tri Cities Airport, TN 67 93 69 92 / 20 20 20 30.
Upper level high pressure remains stationary over the southern plains. The 599 dam 500 mb ridge is expected to slowly retrograde to west the next few days.
Meanwhile, a weak ridge of high pressure is situated across Middle Tennessee this evening, with light/calm winds overnight and radiation fog likely.
/issued 954 PM CDT FRI JUL 22 2016/ For the 10 PM update have removed the rain chances for much of the overnight hours except for late tonight when have added a slight for the East and Southeast sections around the Southern periphery of the mid-upper level ridge of high pressure and with the approach of disturbances in the 7H and 5H level around the periphery of the ridge aloft. Otherwise, expect another round of isolated to scattered convection on Saturday afternoon as the upper level ridge of high pressure becomes less influential on our weather.