Aikyam-Lab/Synoptic-Bench huggingface dataset:
A slightly cooler day is expected Saturday as cold air advection moves in briefly later tonight behind a departing wave. Winds will also shift from the favored westerly direction to a slightly cooler and more moist easterly direction. Overall this should do little more than bring increased cloud cover and slightly cooler temperatures to the region Saturday.
1219 AM EST Sat Feb 18 2017 High pressure moves through the area tonight, with a warm front moving across the northeast by Saturday morning as the high moves east.
1107 PM CST Fri Feb 17 2017 Extremely mild conditions for this time of year, with highs 25 to 30 degrees above normal, and lows several degrees warmer than normal highs, will continue through the weekend.
18Z surface data has a warm front from central Minnesota into southwest lower Michigan. A cold front ran from the eastern Dakotas into northwest Kansas. A dry frontal passage tonight will result in slightly cooler temperatures for Saturday.
1237 AM EST Sat Feb 18 2017 As high pressure moves off the east coast, a southwest flow of much milder air will develop by Saturday.
An upper level low moving into the Kentucky/Tennessee area today could bring some light rain to far southern sections of the area.
This light rain is associated with upper low currently moving across eastern OK.
With the Tri State region lying north of a cold front. Considering the low dewpoints and lack of wind, I lowered the mins from the previous forecast. Consmos has been doing well with the temperatures recently and has them warmer than previous forecast.
The former disturbance will continue northeast into the upper MS Valley tonight, supporting the equatorward advance of a surface cold front through the mid MO Valley. Slightly cooler low-level thermodynamic profiles and shallower boundary-layer mixing will result in highs generally in the lower to mid 60s.
351 AM EST Sat Feb 18 2017 High pressure slides to the east today, putting the North Country in south to southwest flow.
Outside of some clouds across southeastern portions of the mainland, mostly sunny skies have prevailed across the region with high pressure in control. Temperatures have warmed only into the 70s for most areas with cooler and drier air in place. High pressure will continue to remain in control through tonight with mostly clear skies expected.
Closer to home, upper ridging has moved away to the north and east overnight, leaving the region in increasingly moist south to southwest flow in the middle and upper levels of the atmosphere.
Coolest conditions tonight again expected east of I-57 where lows will be in the lower 60s, but near 65 degrees further west. Upper ridge will continue to hold firm on Thursday and keep the convection closer to a warm frontal boundary from southern Minnesota into Wisconsin. Aloft, upper ridge axis from central TX into southern IA. Band of moderately fast upper winds across top of ridge over Dakotas and MN seen in moisture channel and weak difluence farther south over WI to northern IL has aided to support the morning MCS convection that pushed surface boundary through north and into central IL by afternoon.
Dry, hot weather continues as a strong upper level ridge continues to control the region. As sfc conditions continue to get drier each day and the ridge continues to strengthen, temps will continue to climb a little higher. Low temps will continue to creep up as well with lows in the low to mid 60s expected both tonight and Thu night.
The lower-than- expected dewpoints have allowed temperatures to quickly cool this evening.
This morning an h500 upper low was just off shore from the Pacific northwest. The low is forecast to deepen and dig southeast into the Great basin region by Thursday evening with an associated h500 downstream ridge forming over the northern plains. At the surface, high pressure remains in place across southern Canada with developing low pressure across the central plains. This weather pattern will introduce some forecast complexities with dry low level northeast flow limited precipitation and the h500 ridge keeping the upper low track more to the west. Initially the upper low becomes negatively tilted and lifts out through the northern plains into Canada.
919 PM EDT WED SEP 21 2016 High pressure will remain in control of the weather across the region into Thursday.
/issued 355 PM CDT WED SEP 21 2016/ High pressure at the surface and aloft brought the region clear skies as temperatures climbed into the 90s and the dew points fell into the 60s today. Towards the coast temps to hover in the lower 70s with a bit of patchy fog towards sunrise.
753 PM EDT Wed Sep 21 2016 High pressure at the surface will result in mostly sunny skies today and tomorrow along with above normal temperatures. Late Thursday evening, a cold front will move across the area bringing the next chance for showers and much cooler air. Fog is expected to quickly mix out Thursday morning as the center of high pressure shifts to the east and SW flow aloft returns to the area. The ridge will continue to shift east on Thursday which will result in WAA. Main concerns in the short term remain focused around the incoming weak cold front and the abrupt pattern change expected behind the front going into the weekend.
1257 AM EDT Thu Sep 22 2016 High pressure builds over the area through Thursday, then begins to slide offshore Thursday night.
The models all agree well through the first part of the short term with cool Canadian high pressure sliding east across southern Canada bringing prevailing cool northeast winds to our region. As this occurs, a large upper level low pressure trough will kick out of the southwest U.
1020 PM EDT WED SEP 21 2016 Dry weather is expected with temperatures running much above normal through the work week as upper ridging remains overhead.
The upper level low is currently elongated over the western portions of Oregon and Washington with the center located over west central Oregon at this time. There has been some convection this evening from the Cascade crest westward but most of the lightning is currently near the low center in western Oregon. The low center will track southeast into southern overnight.
The upper level ridge that has brought the area continued summer-like weather for the past several days will remain virtually anchored over Texas, and in control of our weather through tomorrow night. Temperatures will drop into the mid 60s to near 70 for lows, with highs in the lower to mid 90s Thursday, with the forecast remaining dry through Thursday evening.
Weather map analysis this evening shows a deep layer ridge axis positioned across TX into the Mid-South. Despite the ridge axis, a mid-level impulse on the eastern periphery of this ridge extending across the Mid-South to the central Gulf coast has combined with a series of weak surface/low level mesoscale boundaries which has proven enough to keep isolated showers lingering into the evening for a small portion of the local area, as they have trended slowly west southwest out of northern Mobile county to now across George county in MS. Otherwise, the forecast remains on track, with fair weather cu and temperatures in the low to mid 90's across the area through the afternoon. While this overall subsidence persists beneath building high pressure, an isolated shower cannot be completely ruled out Thursday afternoon either.
High pressure from the Mississippi Valley east will dominate Indiana weather into the weekend.
/issued 233 PM CDT WED SEP 21 2016/ Upper ridging overhead is slightly weaker today and with a few clouds around this afternoon, high temperatures will be roughly a degree or two cooler, except for maybe the Rio Grande Valley locations where highs will reach or exceed 100. The upper ridge will continue to weaken over the area and slowly shift east as a large upper low (now entering the PacNW) digs SE through the western US the next few days.
723 PM EDT Wed Sep 21 2016 High pressure builds over the area tonight, then begins to slide offshore Thursday night.
Ridging at the surface and aloft will continue to control the weather across eastern Kentucky, with very warm sunny days and mild nights. An upper level ridge of high pressure will dominate our weather through the weekend. Models indicate a backdoor cold front will drop into the Ohio Valley late in the weekend, but this stays north of our area. In fact, weak high pressure in place at the surface will provide for plenty of sunshine throughout the weekend.
1031 PM EDT Wed Sep 21 2016 High pressure builds over the area through Thursday, then begins to slide offshore Thursday night.
738 PM EDT Wed Sep 21 2016 High pressure will give dry and warm weather for the rest of the work week.
Otherwise, the forecast remains on track, with fair weather cu and temperatures in the low to mid 90's across the area through the afternoon. While this overall subsidence persists beneath building high pressure, an isolated shower cannot be completely ruled out Thursday afternoon either.
Dewpoints slightly lower than yesterday's in most areas with values into the lower 60s in eastern Oklahoma. Have kept lows a bit cooler than recent days with a slightly drier boundary layer but increasing cloud cover should help keep them in the lower 70s for the most part. By Thursday night a mid-level ridge will be centered over the Central and Southern Plains with a deep mid-level trough stretched across the western U.
Most do not initialize well with the current convection, and those poorly initializing models blow convection up across the SW CWA this evening as the warm front moves north and LLJ ramps up. The Keweenaw will see the lowest precip chances through tomorrow, possibly being dry much of the time. An amplified pattern will prevail with a prominent mid/upper level ridge from the se CONUS through central Canada by this weekend and a trough slowly moving through the wrn CONUS. Although the models were in agreement with the development of a cutoff low over the cntrl CONUS there were large inconsistencies and run to run variations with the evolution and position of the low.
The pattern aloft featured an upper ridge axis across the southern plains, an upper trough moving onshore in WA/OR with southwest flow across the central plains in between the systems. The cold frontal boundary sags into our northwest cwa late tonight and stalls out early Thursday. Convection may linger for a time Thursday morning on the nose of the low level jet, with conditions drying out by afternoon. Models bring a swath of low clouds in behind the cold front in the vicinity of our northwest zones which would hold down high temperatures Thursday afternoon, while farther south temperatures will remain unseasonally warm. In response, the surface boundary across our northern counties lifts north as a warm front.
An upper trough will gradually shift south of the region on Thursday for dry weather across Western Washington.
The heavy rainfall and true severe threat will be further south along the warm front, but SPC meso page has some elevated CAPE in the far southern counties. The push between drier air from high pressure to our north and moisture from the south will continue into tomorrow.
926 PM EDT Wed Sep 21 2016 High pressure will give dry and warm weather for the rest of the work week. High clouds are spinning into and just over the ridges from a nearly stationary upper low in the Carolinas.
Latest surface analysis shows a frontal boundary extending northeast from low pressure over southwestern Nebraska into a weak low over southeastern South Dakota and then the front continues northeast into southern Minnesota with a well defined outflow boundary across central and eastern Iowa. Ahead of the boundary, a warm, moist and unstable airmass remains in place with surface dewpoints in the lower 70s across much of the forecast area.
/issued 346 PM EDT Wed Sep 21 2016/ High pressure will continue to build into the western Atlantic, which will continue to allow for an easterly flow across South Florida through the rest of the work week. At the same time an area of low pressure currently over the Carolinas will begin to pull away as the week progresses. High pressure will remain in place over the western Atlantic allowing for easterly flow to continue across the region. High temperatures are expected to remain in the lower 90s and low temperatures will remain in the mid to upper 70s. High pressure will remain in place across the Atlantic waters allowing for easterly flow to continue.
Pleasant warm afternoon across the region with surface and upper ridging continuing to dominate our weather. Upper ridge will dominate for the next several days and this weekend keeping the Mid State warm and dry. VFR/SKC conditions expected thru 23/06Z per dominant ridging influences sfc and aloft across mid state. This direction flucuation in sfc wind speed due to shifting apex of sfc ridging influences expected across the region thru 23/06Z.
A cool low pressure system will be moving through the Great Basin as we pass through the Autumnal Equinox, when days and nights are of equal length.
/issued 336 PM CDT WED SEP 21 2016/ Dry and mild weather will remain through Thursday as an upper level ridge axis migrates slowly to the east but with only light southwest flow aloft. A disturbance ejecting into southern Colorado, ahead of the next significant upper level low pressure system now bearing down on Gold Beach Oregon, will clear north and northeast tonight and Thursday. RMcQueen All eyes are on the upper low currently moving into the west as it will bring the promise of a decent late September cold front along with increased rain chances over the weekend. The center of the upper low is progged to cross the Great Basin and then eject northeastward over the Rockies late week and then the northern High Plains early this weekend before solutions diverge.
Copious low level moisture and surface dewpoints into the lower 70s remains pooled south of the front through the Midwest. Warm front still looking to slowly lift N/E tonight with the eastern edge of moisture/instability plume gradually making inroads into northern Michigan. Additional showers/thunderstorm development is likely overnight along the advancing warm front from Minnesota into Wisconsin, which guidance suggests will poke into northern Michigan overnight into Thursday before gradually diminishing through the day Thursday.
1042 PM MDT Wed Sep 21 2016 Upper analysis shows a deepening upper low/trough over the Pacific northwest with weak ridging currently over the forecast area. The main sfc feature is a nw-se oriented trough across northeastern Wyoming into southwestern South Dakota. Tonight through Thursday, the upper low will continue to deepen over the pacific northwest tonight, moving into UT Thursday, then ejecting quickly northward on Thursday night. Upper forcing will increase ahead of the approaching upper low with southwest flow aloft. Shower and embedded thunderstorm chances increase overnight and especially Thursday night ahead of upper low with relatively high pops warranted. Temperatures will be around 10F cooler than average on Thursday. A strong upper low over the Great Basin will slide NE toward the nrn Plains for the end of the week into the weekend.
750 PM EDT WED SEP 21 2016 Dry weather is expected with temperatures running much above normal through the work week as upper ridging remains overhead.
Temperatures have cooled into the low/mid 70s in a few areas across SE Texas and most of the area should have min temps in the low 70s. Water vapor imagery shows an upper low over the Pacific coast which should open up into a long wave trough over the Rockies for the weekend.
521 PM MDT Wed Sep 21 2016 Upper analysis shows a deepening upper low/trough over the Pacific northwest with weak ridging currently over the forecast area. The main sfc feature is a nw-se oriented trough across northeastern Wyoming into southwestern South Dakota. Tonight through Thursday, the upper low will continue to deepen over the pacific northwest tonight, moving into UT Thursday, then ejecting quickly northward on Thursday night. Upper forcing will increase ahead of the approaching upper low with southwest flow aloft. Shower and embedded thunderstorm chances increase overnight and especially Thursday night ahead of upper low with relatively high pops warranted. Temperatures will be around 10F cooler than average on Thursday. A strong upper low over the Great Basin will slide NE toward the nrn Plains for the end of the week into the weekend.
Quiet weather is set to continue for the next several days with an abundance of relatively dry air through the column associated with deep-layer ridging. Widespread high temperatures in the low to mid 90s will continue with readings on the high end of model guidance due to the ongoing drought.
1029 PM EDT Wed Sep 21 2016 The valleys have dropped off into the low to mid 60s as of 10 pm. Ridging at the surface and aloft will continue to control the weather across eastern Kentucky, with very warm sunny days and mild nights. An upper level ridge of high pressure will dominate our weather through the weekend. Models indicate a backdoor cold front will drop into the Ohio Valley late in the weekend, but this stays north of our area. In fact, weak high pressure in place at the surface will provide for plenty of sunshine throughout the weekend.
958 PM EDT Wed Sep 21 2016 High pressure at the surface will result in mostly sunny skies today and tomorrow along with above normal temperatures. Late Thursday evening, a cold front will move across the area bringing the next chance for showers and much cooler air. Fog is expected to quickly mix out Thursday morning as the center of high pressure shifts to the east and SW flow aloft returns to the area. The ridge will continue to shift east on Thursday which will result in WAA. Main concerns in the short term remain focused around the incoming weak cold front and the abrupt pattern change expected behind the front going into the weekend.
758 PM EDT WED SEP 21 2016 A surface pressure trough near the coast and upper low over the area will persist through Thursday.
1000 PM EDT WED SEP 21 2016 Tranquil conds overall tonight as a broad cut-off low centered over the Carolina Coast keeps the lcl pgrad disorganized. most of it confined along and south of the I-4 corridor as the east coast sea breeze combined with the remnant of a weak sfc trof in the Lake-O region acted to focus the moisture and instability. most likely due to weak low lvl convergence occurring in the vcnty of the trof bndry. Mins in the lower-middle 70s. as a weak inverted trof over the SErn seaboard keeps the lcl sfc/low lvl pres field disorganized.
A fairly dry airmass still is covering the cwa with dewpoints mainly in the lower 60s, thus not expecting any widespread/dense fog overnight. For 06Z TAFs: High pressure will continue across the area providing vfr conditions for both KMSL and KHSV thru the fcst period.
A trough of low pressure at the surface will be located along the KS/CO border leading to continued southerly winds through tomorrow. As for temperatures, lows tonight look to range from the lower 60s along the KS/CO border to around 70 across central and south central Kansas. Highs tomorrow are expected to reach into the low to mid 90s.
1232 AM EDT Thu Sep 22 2016 High pressure will be centered over the region tonight then move off the coast Thursday.
1038 PM EDT WED SEP 21 2016 A surface pressure trough near the coast and upper low over the area will persist through Thursday.
The high to increasing dew points at the surface are definitely a sign of a strong inversion which is keeping the moisture trapped near the surface. Later tonight as a wave passes through the low level jet will increase and focus towards northeast Nebraska and northwest Iowa which will bring another better chance for thunderstorms. Thursday night warm front will try to lift north through the area.
Chattanooga Airport, TN 66 90 68 91 / 0 0 10 10 Knoxville McGhee Tyson Airport, TN 64 88 65 88 / 0 10 10 10 Oak Ridge, TN 64 89 66 90 / 0 0 10 10 Tri Cities Airport, TN 59 85 60 85 / 0 10 10 10.
825 PM PDT Wed Sep 21 2016 Unsettled weather is expected late today through Thursday as a large area of low pressure slowly moves by the region.
Highs in the mid 80s to near 90 degrees are forecast as the CWA will remain affected by light southeasterly surface flow with the warm front remaining well to the north across the Upper Mississippi River Valley. Gosselin Unseasonably warm weather pattern will continue into the weekend with upper level ridging over our area along with persistent southerly surface/low level flow.
VFR conditions continue for the area as high pressure continues to suppress convective activity, leaving just a few high clouds. Winds will be variable in the morning hours, but will become southerly as low pressure strengthens in the high plains and east-west pressure gradient becomes more defined.
1144 PM CDT WED SEP 21 2016 Upper-level ridge to maintain VFR conditions across area terminals through much of the terminal forecast period.
An upper ridge centered around Texas will slowly shift and expand eastward, encompassing the southeastern states this week.
Pleasant warm afternoon across the region with surface and upper ridging continuing to dominate our weather. Upper ridge will dominate for the next several days and this weekend keeping the Mid State warm and dry. VFR/SKC conditions expected thru 22/24Z per dominant ridging influences sfc and aloft across mid state. This direction flucuation in sfc wind speed due to shifting apex of sfc ridging influences expected across the region thru 22/24Z.
751 PM EDT Wed Sep 21 2016 High pressure will continue to provide fair weather as it remains stationary across the area through Thursday night. Lows tonight and Thursday night will be in the lower to middle 60s, with highs Thursday and in the mid 80s.
Otherwise, another quiet night shaping up across the tri-state area with lows in the low 70s.
HRRR suggests both will develop as cold front sags southward overnight and post frontal low level upslope develops. Temperatures have been steadily rising through the morning and we remain on track to reach our afternoon high in the lower 90s. Another warmer than average day is in store tomorrow with high pressure positioned just far enough west to continue the influence on our temperatures. Subsidence on the western fringe of the ridge combined with relatively dry air at the surface will keep precipitation out of the forecast through Thursday afternoon. Highs should once more reach the lower 90s. the main wx concern will focus on a strong upper low/trough which currently sits off the Pacific coast.
847 PM EDT WED SEP 21 2016 Stacked low pressure system over the Carolina Coast will move very little over the next day or two but this system will send a weak cold front through our area overnight. This should continue to be the case thanks to very dry air aloft and only a shallow moist layer in the lower part of the atmosphere. Low clouds will continue to move south across the area overnight as a weak backdoor cold front slowly pushes through. A broken line of showers will continue to drop south across the waters tonight as a weak backdoor cold front moves into the area.
The fog may be more persistent and cover more areal extent across east central Wyoming into the northern 2/3 of the Nebraska panhandle, with more patchy coverage to the south of a Wheatland-Scottsbluff-Bridgeport line.
Tonight and Thursday The latest RAP analysis and satellite/radar imagery show a surface warm front snaking from southern Minnesota to northern Illinois early this afternoon. With the rainfall and clouds, temps will remain cooler in the mid 60s to mid 70s.
617 PM CDT WED SEP 21 2016 The models all agree well through the first part of the short term with cool Canadian high pressure sliding east across southern Canada bringing prevailing cool northeast winds to our region. As this occurs, a large upper level low pressure trough will kick out of the southwest U.
Rain chances look to ramp up considerably by the second half of the weekend as a strong upper system and surface cold front approach the region.