Aikyam-Lab/Synoptic-Bench huggingface dataset:
1245 PM EDT SUN JUL 10 2016 A weak cold front, characterized more by drier air than cooler temperatures, will settle toward the coast of NC today. This is evident by sfc dewpoints in the low and mid 60s late this morning across the area. -26 A positively-tilted trough /shear/ axis aloft will continue to extend from the TN Valley NEWD across the SRN Middle Atlantic states, while the low level frontal zone remains quasi-stationary from SWRN VA to ERN NC, or squarely over central NC. Lows in the lower to middle 70s, with a chance of showers and perhaps a few storms lingering with little change in synoptic features overnight.
A strong cold front will sweep across the forecast area today and early tonight, resulting in significantly cooler temperatures for the first part of the workweek. Surface cold front is stalled near a KELY-KSLC-KEVW line this morning with the main storm system centered over the Pacific Northwest. A few mostly dry showers and thunderstorms are expected to develop over northern Utah as the trough passes, but the main impact will be increasing winds and much cooler temperatures. Initially, post- frontal winds over northwest Utah will become quite gusty in the increasing pressure gradient late this afternoon/early this evening with the passage of the trough and a wind advisory is in effect.
1046 AM CDT SUN JUL 10 2016 High pressure ridge axis just off to the east, and light southerly winds are dominating the surface. 07z/2am surface analysis shows ridge of high pressure extending from the Great Lakes into Illinois. ridging is building over the Plains in response to a deep trough digging across the Pacific Northwest. Will need to keep an eye on this system, but think it will completely dissipate by early to mid afternoon across central Iowa as it tries to push into the prevailing ridge axis and unfavorably dry airmass further east. As high pressure shifts off to the east, the very warm/humid airmass poised just southwest of Illinois will filter back northward by Monday.
Mid level northwesterly flow along the periphery of building upper ridging will linger across the region today. Moderating thermal profile as upper heights begin to rise will bring highs largely within the lower 80s this afternoon. Solid warming trend on track for the early week period, the response maximized as the aforementioned upper ridge pivots through and the low level gradient eventually turns southwesterly.
Some of the latest iterations of short term models are hinting at a later start to convection due to a slower evolution of the upper level low to our west. Currently, southwest flow aloft remains over the region with an upper level ridge axis east and a strong upper level low over the Pacific NW. Upper level low moves slowly east into the Intermountain west during the day, with strong forcing materializing across the region as an upper level jet rounds the base of the low and starts to increase upper level diffluence across the Northern High Plains and eventually into the Dakotas increasing large scale ascent.
06Z surface data has high pressure from the Great Lakes into the lower Mississippi Valley. At the very worst an isolated shower or some sprinkles may occur in the highway 20 corridor.
538 AM MDT SUN JUL 10 2016 Current surface map places weak cold front/outflow boundaryacross northeast Wyoming into western South Dakota. Water vapor shows upper ridge located over the dakotas. as strong upper trof moves into the northwestern U. Jet streak rotates through base of upper trof and lifts through western Wyoming into Montana. Upper low track across Montana into northwest North Dakota on Monday with dry and windy conditions expected across the forecast area.
/issued 359 AM EDT SUN JUL 10 2016/ Deep layer subtropical high pressure ridge will dominate South Florida through the week, bringing seasonably hot and humid conditions to the region.
Otherwise, some high clouds are streaming in from the west while KLCH radar shows only a few small -SHRA over the lower Atchafalaya Basin and offshore. A change in the upper level weather pattern will take place today as the center of the pesky upper level ridge will become more established over the southwest U. at the surface and the low levels, high pressure will be centered off of Florida and ridge westward across the Gulf South and into the forecast area. The one change will be a little bit more in convective activity as an upper level high weakens allowing showers and thunderstorms to increase in coverage.
802 AM EDT SUN JUL 10 2016 A weak cold front, characterized more by drier air than cooler, will settle toward the coast of NC today. A cold front, and leading edge of drier air in the low levels characterized by dewpoints in the 60s, stretched at 08Z from SERN VA SWWD to west-central SC; and this boundary will continue to move SEWD and stall from the NC coast WSWWD to east-central SC this afternoon. A positively-tilted trough /shear/ axis aloft will continue to extend from the TN Valley NEWD across the SRN Middle Atlantic states, while the low level frontal zone remains quasi-stationary from SWRN VA to ERN NC, or squarely over central NC. Lows in the lower to middle 70s, with a chance of showers and perhaps a few storms lingering with little change in synoptic features overnight.
929 AM EDT SUN JUL 10 2016 Low pressure will cross the region today then exit across the maritimes tonight.
1237 PM EDT Tue Apr 4 2017 Scattered showers will linger today as one low pressure system departs.
The local morning sounding does show that the lower wind profile has relaxed over the past 12 hours. Moisture has ticked up during that time, but we remain relatively stable through the lowest layers.
1024 AM EDT Tue Apr 4 2017 Scattered showers will linger today as one low pressure system departs.
A cold front will move slowly inland on Wednesday before stalling and weakening.
809 AM EDT Tue Apr 4 2017 High pressure over the Atlantic waters will continue to generate southeast flow today. /issued 345 AM EDT Tue Apr 4 2017/ High pressure dominating the weather pattern over South Florida begins to weaken and shift east as the low pressure system over the Central Plains drifts towards the Northeast Plains. This low is providing severe weather over portion of the Southern Plains into the Tennessee and Ohio Valleys.
Winds will weaken slightly and shift to the north around sunset as a cold front moves into the area. Winds will decrease later this evening and tonight as the gradient relaxes behind a dry northern stream cold front.
Gusty west winds this afternoon will veer to NW overnight as a cold front eases into the region. Winds will weaken slightly and shift to the north around sunset as a cold front moves into the area. Winds will decrease later this evening and tonight as the gradient relaxes behind a dry northern stream cold front.
712 AM EDT Tue Apr 4 2017 Upper trough exits this morning. Weak high pressure tonight.
A strong cold front will sweep southeastward overnight with gusty winds and ceilings quickly falling into low MVFR to IFR range. A cold front has moved into northeast Oklahoma this morning as well. Temperatures on Wednesday will be much cooler across a good portion of the area with gusty northerly winds in the wake of the departing storm system. At or below normal temperatures continue through the work week as high pressure builds in from the north.
Places north of I-40 may be a few degrees cooler as clouds slowly increase over the north today. Winds will become SSE tonight as the next low pressure system approaches across the Mid Ms Valley.
TFJ Weak circulations has moved over the lower Yellowstone valley this morning. As the low pressure system exits to the east today, lingering moisture and instability should allow for ample convective activity to continue, with a general tapering from west to east as the day wears on.
After a cool start to the morning, 28F in Boise, conditions are still expected to be dry and warmer today, with valley highs in the 50s. High clouds are moving with the the upper ridge later today and tomorrow. This ridge and cloud cover is expected to keep overnight temperatures and afternoon highs 10-15 degrees warmer tomorrow than today. Upper ridge currently along the coast will shift inland to western Idaho this evening and eastern Idaho Wednesday. Warm front will bring more clouds to eastern Oregon tonight and the entire area Wednesday. Wednesday will be 9 to 12 degrees warmer than today in the south, but 6 to 9 degrees warmer in the north where clouds will be thicker.
A weak weather disturbance is brushing by northern Utah today, followed by the return of high pressure tonight into Wednesday.
At the surface, warm front is situated down across the southern portion of the TX Panhandle. The main focus today will be seeing how far north the warm front makes it. The NAM is slightly further north than the GFS and to a lesser extent the RAP, and would have southern parts of Labette and Montgomery county south of the warm front, possibly allowing for surfaced based convection. So will focus on large hail for now, but if warm front lifts north like the NAM would suggest, could not rule out a tornado over mainly Labette and Montgomery counties. Even with gusty north winds expected area wide for Wed, cooler temps will keep the RH values on the higher side.
Mainly VFR expected next 24-hours as a weather disturbance exits to the east and a high pressure ridge aloft builds-in from the Pac NW. An upper trough will exit our region to the east today and be followed by upper high pressure ridging building-in from the Pac NW through Wednesday.
Winds may temporarily decrease early this evening, however, a cold front will move through between 1Z and 5Z bringing strong gusty northwest winds to the terminals. With downslope west winds, have highs in the lower to mid 80s, and it is possible some areas may rise into the upper 80s. A cold front will move into the northern Big Country around 8 PM and through West Central Texas by 1 AM. Much cooler on Wednesday behind the cold front, with highs only in the upper 60s to around 70.
The question is how far south the low-level convergent boundary will move, and whether or not it will move south of the favorable dynamics aloft.
1008 AM CDT Tue Apr 4 2017 WV imagery shows compact closed low sweeping across the srn plains this morning. Otherwise, temps on track to reach into the low to mid 80s areawide today, with a tightening pressure gradient bringing gusty winds to the wrn half of the region by midday. A strong cold front is finally ready to move in tomorrow with another windy afternoon expected. Rain showers or possibly thunderstorms will have the best chance in the I-30 corridor and mainly overnight ahead of approaching cold front. Today will be the last warm day for a few with temperatures cooler than average for a nice change of pace.
/issued 424 AM CDT Tue Apr 4 2017/ Scattered showers will persist in the north this morning north of the frontal boundary, with additional showers and storms developing as the upper trough approaches from the west. As the upper wave moves east, the instability shifts to the east, but we continue with moisture near and wrapping around the upper low that showers will persist overnight in the northeast portion of the forecast area. The area will remain dry late this week after this system lifts out as upper ridging builds over the area. And daytime temperatures will be quite warm this weekend thanks to this ridge.
937 AM PDT Tue Apr 4 2017 High pressure will build with a warming trend through midweek. A low pressure system will bring a chance of rain and cooler temperatures late in the week. Temps warmer today but just a few degrees, and mainly inland. With the ridge overhead it should be less deep and likely not as much valley intrusion, but coastal areas likely will again see overnight low clouds and fog. ***From previous discussion*** The ridge will shift east Wednesday night in response to a trough approaching from the west.
638 AM CDT Tue Apr 4 2017 Windy conditions expected today as the pressure gradient tightens ahead of a cold front. A strong cold front is finally ready to move in tomorrow with another windy afternoon expected. Rain showers or possibly thunderstorms will have the best chance in the I-30 corridor and mainly overnight ahead of approaching cold front. Today will be the last warm day for a few with temperatures cooler than average for a nice change of pace.
High pressure moving into the region will result in dry and warmer weather through the rest of the work week. Cool but drier northwest flow will develop today in the wake of last evening's strong cold front. An upper level low pressure system has quickly moved into New Mexico this morning with northwesterly flow taking hold over the area. Expect dry and relatively cool weather today as a ridge of high pressure builds over the inter-mountain west.
Winds may temporarily decrease early this evening, however, a cold front will move through between 05/01Z north and 05/05Z south. Winds may temporarily decrease early this evening, however, a cold front will move through between 1Z and 5Z bringing strong gusty northwest winds to the terminals. With downslope west winds, have highs in the lower to mid 80s, and it is possible some areas may rise into the upper 80s. A cold front will move into the northern Big Country around 8 PM and through West Central Texas by 1 AM. Much cooler on Wednesday behind the cold front, with highs only in the upper 60s to around 70.
950 AM PDT Tue Apr 4 2017 Warmer through Wednesday with high pressure aloft and weak offshore flow at the surface.
606 PM CST Tue Nov 8 2016 Quiet weather ahead tonight into Wednesday as high pressure shifts south of the area, then southerly winds will develop through Wednesday morning. Expect the lowest spots in northwest Iowa to fall to 25 to 30 degrees while temperatures will bottom out from about 30 to 35 in central SD where winds will turn to the south around midnight.
Allowed the High Risk of Rip currents to expire this evening. The strongly positive tilt trof from the Great Lakes southwest to southern texas will progress southeastward tonight into Wednesday as the southern part of the trof breaks off and retrogrades westward. An associated cold front will move through the area Wed afternoon with a cooler and drier airmass moving in. Lows tonight will be in the low to mid 50s inland to low 60s along the coast.
255 PM PST Tue Nov 8 2016 High pressure will prevail into the weekend with dry conditions, light winds and above average daytime temperatures. Few changes made to the short term with high pressure over the intermountain west.
/Issued 316 PM CST Tue Nov 8 2016/ Cold front continues to push through southeast OK this afternoon with drier low level airmass spreading southeast.
Update A ridge of high pressure will hold in place tonight keeping skies fair and wind light. Otherwise, a lee side trof is forming off of the Rocky Mountain front bringing warmer temperatures into the area this afternoon and even warmer tomorrow.
Much cooler temperatures can be expected tonight due to low level cold air advection, a clear sky, and surface dew points dropping into the middle 30s to lower 40s by 12Z Wednesday. GKS Cold front extending from near Springfield Missouri northeast into Central Illinois will push through the area by early evening. Some guidance members spit out a bit of precip behind the front as a vortmax which is currently over northern Missouri shifts south toward the base of the mid-upper level trof. The period begins with a trough over the eastern CONUS with a rex block over the the western two thirds of the CONUS.
617 PM EST Tue Nov 8 2016 A cold front will move east of the forecast area this evening. High pressure will build over the region on Wednesday.
41 High pressure will continue to weaken and move offshore the evening as a cold front moves into the Mississippi River Valley. Models are progging a wind shift/trough out ahead of the main boundary that moves through late tonight/very early on Wednesday. A pre-frontal trough is expected to move through the area late tonight/early tomorrow morning. Winds are not expected to pick up much speed behind the trough, but should change direction to a more westerly direction. Winds are expected to become gusty behind the cold front during the late morning and afternoon on Wednesday.
400 PM MST Tue Nov 8 2016 Large scale ridging continues to dominate the pattern across the western US into the Central High Plains region. A trough extends across the southern plains, but is having little to no influence on sensible weather over our CWA. At the surface, high pressure is in place over our CWA. Low temperatures tonight will drop into the upper 20s and lower 30s across our CWA as Canadian high pressure slides eastward. If lower visibilities were to occur(below 1sm) freezing fog couldn't be ruled out. I held off on freezing fog mention for now, due to the low overall confidence. An upper level ridge of high pressure will continue dominating the weather across the High Plains.
600 PM CST Tue Nov 8 2016 Cold front extending from near Springfield Missouri northeast into Central Illinois will push through the area by early evening. Some guidance members spit out a bit of precip behind the front as a vortmax which is currently over northern Missouri shifts south toward the base of the mid-upper level trof. The period begins with a trough over the eastern CONUS with a rex block over the the western two thirds of the CONUS.
Chattanooga Airport, TN 51 66 39 68 / 20 0 0 0 Knoxville McGhee Tyson Airport, TN 48 61 37 64 / 40 10 0 0 Oak Ridge, TN 48 60 36 65 / 50 0 0 0 Tri Cities Airport, TN 45 56 34 61 / 60 10 0 0.
855 PM CST Tue Nov 8 2016 Quiet weather is anticipated across central and southeast Illinois overnight as high pressure and the associated dry airmass build into the area. the high pressure ridge across the western half of the country. and the cold front that is exiting the region this afternoon. A few showers lingering in the southeast should move out in the next few hours as the cold front moves to the east. For the overnight hours and into tomorrow, the high pressure ridge will build into the Midwest for a quiet and cool overnight and Wednesday. characterized by a large ridge holding firm over the western U. and Plains with a large upper trough over the northeast.
Some very spotty areas of light rain will be possible, but most sites will be rain-free as a cold front continues to advance through the region. Main source of instability is an upper-trough across the Red River valley of north Texas and southern Oklahoma. Trough to gradually push southeast across the region through the next 24 hours with conditions gradually improving from the northwest. Surface and upper-level high pressure to strengthen across the region through midweek with dry conditions prevailing through the remainder of the forecast period.
933 PM EST Tue Nov 8 2016 High pressure remains in control of the weather through today. A cold front will move through the area Wednesday.
The lower ceilings could last the rest of the day, if not dip to IFR at KFST. Will not include any mention of fog at this time, especially since the low cloud deck may inhibit fog development. /issued 105 PM CST Tue Nov 8 2016/ The upper ridge remains over the west this morning while a low over OK has a trough extending back to the southwest. This low is expected to retrograde to the SW and become cut off tomorrow near ELP. This scenario will create the potential for additional rainfall this week before the low is eventually swept east over the weekend. will have noticeably cooler temperatures this afternoon.
1056 PM EST Tue Nov 8 2016 High pressure will move east of area overnight before a cold front approaches the region late tonight. Cold frontal passage will occur Wednesday. High pressure then builds in through the end of the week. 1050 PM Update: High pres ridge moving e this evening w/pre- frontal trof moving through western Maine. Low lying sire such as PQI and HUL already down in the low 30s. Elevated sites such as CAR and FVE in the lower 40s. Hi temps on Wed will be cooler than tdy due to the presence of cldnss and shwrs. The upper trof axis is forecast to move east of the down east coast Wednesday night.
535 PM CST Tue Nov 8 2016 Upper trough will sag south of the area this evening while ridge across the western Conus begins to build eastward into the area. Concern would be for either fog or patchy frost to develop, but with center of the high well west of the area all guidance suggests boundary layer to remain mixed enough to preclude any fog or frost potential. High pressure will dominate the region through midweek.
Upper level ridging across the area will flatten some as a long wave trough. along with an accompanying cold front. High pressure near the southern Appalachian chain settles toward the Gulf coast. The high will maintain light easterly low level flow across the peninsular with enough moisture for some increasing cloudiness. The approaching upper trough and front bring in enough energy and moisture for low odds of showers of showers on the northeast Gulf after midnight and the northern Nature Coast toward sunrise. High pressure north of the waters will provide some robust winds over night. night with winds shifting to northerly as high pressure builds back in.
Most of the shower activity is expected along the immediate coastline along the developing trough with some isolated activity spreading or developing inland. The lower ceiling Wednesday morning may take much of the morning to rise to VFR. Medium confidence in the lower cigs this evening with higher confidence early wednesday. /issued 210 PM CST Tue Nov 8 2016/ SHORT TERM (Now through Wednesday night): A cold front is pushing through the CWA this afternoon and should be south of the area as well as offshore this evening. The GFS signals a touch of energy moving out of the upper low and over the Mexican mountains Wednesday night, forcing the retention of isolated showers over the Upper Valley.
553 PM EST Tue Nov 8 2016 With cold front now through terminals, expect steady northwest flow into the overnight hours. Northwest flow will hold above 10-12 knots within cold air advection behind cold front on into Wednesday morning. Surface cold front has already begun to move across lower Michigan and will clear the area by early evening. Rain showers will diminish over the next few hours before coming to end with the cold frontal passage. The upper level trough will continue to lag behind the surface front and will exit east of the area overnight. Clouds are expected to stick around, so despite the cooler northwesterly flow and 850 mb temperatures dropping to around 0C, low temperatures will stay in lower 40s tonight.
/issued 214 PM CST Tue Nov 8 2016/ A cold front moved south of the fa today. This front along with an upper trough pivoting across the region has resulted in patchy drizzle and light rain showers. Models show a portion of the upper trough currently moving across the region becoming a closed low in SW TX. This low will meander around and west of that area for a few days before eventually shifting back towards the Southern Plains and becoming an open wave that affects the area this weekend. In the meantime, models show an upper trough moving across the eastern U.
556 PM EST Tue Nov 8 2016 A cold front will bring showers tonight and into Wednesday.
918 PM EST Tue Nov 8 2016 High pressure will persist across the region through Wednesday.
557 PM EST Tue Nov 8 2016 High pressure will persist across the region through Wednesday.
836 PM EST Tue Nov 8 2016 Clouds will continue to filter in through the night ahead of an approaching cold front.
827 PM EST Tue Nov 8 2016 Benign weather conditions continue across South Florida with broad high pressure dominating the SE US.
911 PM EST Tue Nov 8 2016 A cold front will bring showers tonight and into Wednesday.
330 PM MST Tue Nov 8 2016 With the exception of a few high clouds, benign weather will persist as a ridge of high pressure amplifies over the area. Persistent upper level ridging will continue to restrict any chance for precipitation through the end of the week.