Aikyam-Lab/Synoptic-Bench huggingface dataset:
411 PM CDT Fri Mar 31 2017 Ridge of high pressure continued to move through the Plains this afternoon as a closed low pressure system was making its way east southeastward near the Four Corners region. Underneath this ridge. High pressure shifts eastward overnight tonight with breezy southeasterly winds and warmer temperatures returning across the CWA Saturday. The upper low will continue to make progress across New Mexico during the day Saturday with thunderstorm potential developing across Western Oklahoma.
451 PM CDT Fri Mar 31 2017 For the Four State Region another night of cool weather will prevail with warming temperatures on Saturday with the Southerly flow aloft becoming more pronounced as ridging of high pressure aloft moves overhead and to the East.
An area of low pressure near the Four corners will bring a slight chance of showers northeast of Tucson tonight, and a better chance of showers with a few thunderstorms on Saturday.
Nearly stacked low pressure over the upper Ohio Valley today will spin widespread clouds and scattered showers from the Great Lakes into the Ohio Valley. Tonight and tomorrow high pressure will nose in from the northwest.
240 PM MST Fri Mar 31 2017 A cool low pressure system will continue to slowly circulate through northern Arizona tonight, and slowly exit into New Mexico Saturday.
A deck of stratus clouds on the back side of an upper level low continue to thin out and push eastward.
333 PM EDT Fri Mar 31 2017 High pressure will begin building into the region tonight and will continue through the weekend.
Visible satellite imagery this morning shows extensive low cloud cover wrapping around an upper low over Indiana has spread over Middle Tennessee. All airports will see MVFR cigs this evening/tonight as clouds continue to rotate around an upper low over the Midwest.
601 PM EDT Fri Mar 31 2017 High pressure building into the area tonight will prevail through the weekend.
637 PM EDT Fri Mar 31 2017 Low pressure over Ohio will shift east across Pennsylvania this evening and then off the New Jersey Coast after midnight. High pressure will build into the Ohio Valley and Lower Great Lakes on Saturday.
214 PM CDT Fri Mar 31 2017 The periodic pattern and transition from ridge to trough (or closed low) back to ridge weather features will continue into early April. The next chance for measurable precipitation will be delayed at least 50 hours, as the building ridge over the Quad State region tonight gradually phases in with the northern stream ridge in Central Canada. The exiting low pressure center in the Northeast U. is slowly being followed by another closed low approaching the four corners region of the Desert Southwest U. low, forcing the low to open and accelerate eastward.
On Saturday the high pressure ridge axis moves east and southerly surface winds are induced as low pressure develops in the lee of the Rockies. The southerly h850 winds of 15 to 20 knots should help evacuate the low stratus clouds and fog from south to north by noon on Saturday. A warmer day expected with highs ranging from around 60 in the southwest to the 50s north and east of the Missouri River.
Scattered moderate to heavy showers and isolated thunderstorms have developed across portions of the Florida panhandle and spreading into southeastern Alabama and southwestern Georgia in response to pre-frontal forcing as the mid-level trough swings through the area. The cold front associated with this system is currently draped across Alabama and southeastern Mississippi. Given the lack of radiational cooling overnight due to cloud cover, temperatures will likely easily rebound into the low 80s for highs this afternoon.
The wrap around moisture associated with the low near Four Corners is decreasing in our area as the low moves to the east.
308 PM CDT Fri Mar 31 2017 A mid/upper ridge was moving over the central Conus while low clouds and below normal temperatures remained entrenched across the forecast area. A warm front may lift north across the Oklahoma state line into Southern KS on Saturday but temperatures north of the front will likely remain below normal once again with moist upslope flow and limited insolation.
102 PM EDT Fri Mar 31 2017 Low pressure will track across northern Ohio today and off the Mid Atlantic Coast by Saturday morning.
403 PM EDT Fri Mar 31 2017 Low pressure will continue to move toward the southern New England coast tonight.
1230 PM CDT Fri Mar 31 2017 The upper low over the Ohio River Valley is kicking off low level moisture on its western periphery. Despite the low clouds, am optimistic for clearing today given the notable dry punch noted on water vapor imagery.
Highs Saturday will be in the upper 40s to mid 50s, with the cooler temperatures over the north half, where cloud cover linger through a big portion of the day. Models suggest that a mild split flow pattern will become more amplified as a ridge builds from the sw CONUS through Alberta/Saskatchewan with downstream troughing from the Great Lakes into the se CONUS.
High pressure will build into central California and bring mostly clear skies, lighter winds and warmer afternoon temperatures to the region this weekend.
235 PM EDT Fri Mar 31 2017 One cold front moves across this afternoon, followed by another tonight.
Skies continue to clear this afternoon across western Montana and central Idaho as high pressure builds over the region. High pressure will flatten into more of a westerly flow during the day Saturday, increasing cloud cover and bringing showers to the region, particularly during the afternoon and evening hours.
331 PM CDT Fri Mar 31 2017 Surface analysis this afternoon shows an area of low pressure over the eastern Ohio Valley region with another area of low pressure near the 4-Corners region. In between, for much of the central CONUS, resides weak high pressure. Aloft, similarly placed upper level lows linger in the eastern and western portions of the CONUS while generally zonal flow exists from southwestern Canada into the Great Lakes. As the center of the weak high pressure shifts eastward, this will allow weak easterly winds to become more south and southwest, thus allowing for modest warm air advection to develop for tomorrow. As such, will look for highs tomorrow to be roughly 5-10 degrees warmer tomorrow than what was experienced today, particularly since no low clouds are expected tomorrow.
Some erosion of the deck may take place tonight as increasing southerly flow sets in ahead of the next cyclone currently near the four corners region, but with most guidance and soundings pointing towards continued stratus overnight and continued NE/E flow near the surface, have left near overcast skies in the forecast through tomorrow.
The center of the upper low was moving across Southern Illinois before it tracks along the Ohio River Valley later today. E Iowa/NW Illinois have remained on the cool and showery NW side of the low. Lows are forecast in the lower to middle 30s.
203 PM EDT Fri Mar 31 2017 A cold front crossing the Midlands and CSRA this afternoon will move off the coast by evening. High pressure building into the area tonight will prevail through the weekend.
651 PM EDT Fri Mar 31 2017 A cold front will move through Eastern North Carolina this evening. High pressure will pass through from the northwest this weekend.
148 PM EDT Fri Mar 31 2017 Low pressure will push east across the area this afternoon allowing the chance of showers to persist.
629 PM EST Sun Nov 6 2016 High pressure centered over the Lake Ontario will drift east and then south.
A weak cold front will be pushing through the area. 925mb winds at not super strong, around 30 kts, so think we will stay below wind advisory criteria but kept winds in the west near 20 to 22 kts, above the lower blended solution.
The pattern will begin to change somewhat during this period as mid level ridge axis shifts east and puts the forecast area into southwesterly flow.
955 PM EST Sun Nov 6 2016 High pressure will remain over the region through the middle of the week. It appears that Monday night will bring the highest probability of frost as the reinforcing surge of cool/dry air will be firmly in place by then. Stacked ridging builds overhead through Monday night, with modest cold and dry air advection in northerly flow on Monday indicative of highs from 5 to 7 degrees cooler. The cooler and drier airmass set the stage for favorable radiational conditions Monday night. especially across the piedmont which will be directly under the ridge axis.
707 PM EST Sun Nov 6 2016 VFR conditions through the TAF period as high pressure builds to the north.
A deep and uniform anticyclone persists across the eastern United States. At the surface, the associated high pressure system is east of the Great Lakes, although its expansive southern flank blankets our region in a tightened pressure gradient. The forecast calls for a slight chance of showers for the island chain, with lows falling into the lower 70s.
Any precipitation is expected to be light, confined to the higher terrain of Baker County Oregon and west-central Idaho.
More quiet and dry weather is in store for eastern Kentucky tonight through tomorrow night, as a ridge of high pressure remains entrenched across the region. Another chilly night is expected tonight, as clear skies and near calm winds lead to large ridge and valley temperature differences.
828 PM EST Sun Nov 6 2016 High pressure continues across the area. /Issued 245 PM EST Sun Nov 6 2016/ Models show good agreement with strong high pressure remaining anchored over deep south and maintaining dry conditions through the short term and beyond.
912 PM EST Sun Nov 6 2016 High pressure centered over the Lake Ontario will drift east and then south.
/issued 250 PM EST Sun Nov 6 2016/ Broad upper ridging to narrow a bit Monday as upper trough moves through the Plains states with upper cirrus clouds moving overhead.
WV imagery shows the upper trough axis now to the east of all terminals, w/consequent scattering of cigs as subsidence tries to set in. /issued 140 PM CST Sun Nov 6 2016/ The upper low that brought rain to the area yesterday will move east today and tonight but a secondary part of the trough will dig back to the SW. Not expecting much cooling initially but a stronger surge of cooler air will push down into the area Monday night.
Cooler lows in the lower 60s expected for the interior. High pressure will persist to our north and provide a northeast-east wind flow as mid level ridge overhead starts to dampen out. Moderate to large northeast swells from low pressure/Gale center north of Bermuda should begin to affect the coastal waters and produce a High Risk of rip currents.
The upper ridge axis will continue to move away tonight into Mon night. An upper trough approaching from Canada will then pass through the wrn Great Lakes on Tue. This will drive a cold front through the area Tue am. Clouds will increase Mon evening with sct-bkn050 with chances of rain showers after midnight with the passage of a cold front. The passage of a cold front will shift the winds to the nnw for Tue. The ridge will slowly slide east overnight into Monday. There will actually be cooler air just above the surface that flows over Wisconsin tomorrow, so expect high temperatures to be lower than they were today, in the lower to mid 60s.
Meso models have not been overly accurate with the timing of the convection today so the VCSH in all of the tafs overnight into MON is due to the low confidence of the timing and overall coverage in precip the next 24 hours.
On Sunday afternoon, a slow moving upper level low continued to slowly drift toward the east and northeast across eastern Colorado with additional short wave spokes rotating northeast out of north TX and central TX. Another strong northern stream trough was over the Rockies of southern Canada, and will move east over the coming days. Scattered showers have spread across western KS but more widespread activity was spreading north across Oklahoma this afternoon in response to one of the short wave troughs.
A short break in the precipitation is expected this evening before mid to upper ascent increases again late tonight with the mid to upper trough entering the TX panhandle. The highest coverage will likely shift to along and east of I35 after mid day tomorrow within the deep moisture axis. Scattered showers may linger through early Tue morning, especially across the east and southeast zones, as a cold front pushes into OK. Breezy north winds around 15 to 20 mph will follow this front Tue and shift the low level moisture south. However, current projected dewpoints suggest they may remain slightly warmer.
The upper level ridge axis over the Lower Mississippi Valley will gradually move southeast over the next 24 hours.
Weakening inverted trough and surface convergence along with drier air has dissipated most of the shower activity this evening. ranging from the lower 50s over inland SE GA to mid 60s along the northeast FL coast. Breezy conditions expected especially near the coast on Monday as high pressure builds to the north which will tighten the pressure gradient.
1013 PM EST Sun Nov 6 2016 High pressure will persist across the region into the middle of the week.
But, the weak cold front moving through the area will bring cooler 700mb air with it. Expect resulting Monday Tmax to run a bit cooler than Sunday.
809 PM EST Sun Nov 6 2016 Deep layered ridging will remain in place over the eastern U.
/Issued 245 PM EST Sun Nov 6 2016/ Models show good agreement with strong high pressure remaining anchored over deep south and maintaining dry conditions through the short term and beyond.
This is due to lower ceilings ahead of an upper level trough with a complex of showers entering our northeast Texas counties this evening. Farther east, some showers will also encroach on the SHV/TXK terminals with low VFR ceilings overnight and then possibly lowering to MVFR on Monday as the trough shifts closer to the region. However, rainfall should increase in coverage from the west overnight as an upper-level trough drifts east across the region over the next several days.
Eventually the northern wave forcing and lift with its cold front aloft will try to phase and combine with the south and produce a narrow ribbon of sufficient moisture and possibly light precipitation central and west by late afternoon. Temperatures Monday should only be slightly cooler than today but will have a somewhat atypical spacial distribution, warmer east/cooler west, due to thicker clouds and light precip crossing the MO River. /Monday night through Sunday/ Scattered light showers are expected on Monday evening as a surface cool front in conjunction with a mid-level trough approach from the midwest.
856 PM EST Sun Nov 6 2016 High pressure will remain in control of the region through Election Day.
1000 PM EST Sun Nov 6 2016 Temperatures will remain the challenge tonight, as the cold valley spots are in some cases slightly cooler than same time last night. More quiet and dry weather is in store for eastern Kentucky tonight through tomorrow night, as a ridge of high pressure remains entrenched across the region. Another chilly night is expected tonight, as clear skies and near calm winds lead to large ridge and valley temperature differences.
An upper level trough at 500 mb currently over Colorado will continue moving northward tonight, bringing an abnormally moist airmass into the region. Have nudged pops up some, but only into the lower chance range. Drier and cooler air will filter into the region from the northwest on Monday.
1005 PM EST Sun Nov 6 2016 A high amplitude ridge of high pressure builds across the region tonight through Monday night bringing clear skies and light winds.
POPs will increase across the entire region on Monday as precipitable water and low level thte is progged to increase ahead of upper trough.
/issued 342 PM CST Sun Nov 6 2016/ Upper level trough over NM and W TX should will continue to progress slowly eastward over the next several days.
Chattanooga Airport, TN 45 73 45 71 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 43 71 43 72 / 0 0 0 0 Oak Ridge, TN 43 71 43 72 / 0 0 0 0 Tri Cities Airport, TN 35 70 35 68 / 0 0 0 0.
746 PM EST Sun Nov 6 2016 High pressure will remain in control of the weather through the middle of the week.
Models prog sufficient moisture remaining across the area as upper trough is situated across the state and jet streak noses into the area. Cloud cover and precip will keep temperatures in the lower 80s tomorrow.
Temperatures will remain well above normal tonight as a prevailing southeasterly upslope flow does little to modify the air mass across the high plains. Dry conditions are likely through the end of the week as a building upper level ridge shifts slowly eastward across the Intermoutain West into the Western High Plains during the period.
Large high pressure system remains across the Midwest and Central U. Forecast lows are in the lower 40s on avg and there is no threat for precipitation.
852 PM EST Sun Nov 6 2016 A high amplitude ridge of high pressure builds across the region tonight through Monday night bringing clear skies and light winds.
As the front advances on Monday, the low level moisture increases further east into the I29 corridor, Iowa, and Minnesota. For Monday, highs will be slightly cooler than the last few days, especially across our eastern half where greatest cloud cover and shower chances are expected. Should set up a radiative cooling night where gradient drops off near/west of the James valley, and have shaded lows toward cooler guidance components within the blend.
Upper 60s are common across the CWA at this hour, with a few spots in the low 70s. Expect a 5 to 7 degree split between the warmer urban and mixed areas and the decoupled valleys overnight. Overall, these will be near normal temps mostly in the low 40s. The cooler spots find their way to the upper 30s. This should put most everywhere in the 69 to 73 range with the highest temps near the TN border and in urban areas. Monday night will be slightly milder as light southerly flow on the back side of high pressure brings slightly higher Td's and increasing cloud cover.
506 PM CST Sun Nov 6 2016 Still looking rainfree and unseasonably warm through Monday as high pressure moves very slowly east toward the eastern seaboard. Positively tilted short wave diving southeast from the Midwest will approach the region with an associated cold front Tue/Tue night.
The massive ridge pattern continues through the forecast period keeping flight weather VFR with no ceilings below 20k feet and no visibility problems.
1035 PM EST Sun Nov 6 2016 High pressure will remain in control of the weather through the middle of the week.
An associated surface cold front will sweep through western and central ND tonight. Behind the surface cold front Monday, H85 temps fall back to between +2C to +4c Monday afternoon. Area of clouds now in western Alberta will break off in the northwest flow behind the cold front and slide into northern ND Monday.
300 PM PST Sun Nov 6 2016 High pressure will prevail for most of the week with dry conditions, light winds and above average daytime temperatures. High pressure will build into the region over the next few days, with warming temperatures aloft.
623 PM EST Sun Nov 6 2016 High pressure will slide east allowing for another quiet night tonight.
500 PM MST Sun Nov 6 2016 Water vapor imagery shows the upper low moving across Colorado today with some moisture associated with this system pushing up into the Nebraska panhandle. As anticipated, westerly winds across southeast Wyoming have become breezy today as the leeside pressure trough deepens, with gusts 35 to 45 mph observed in some of the wind prone areas along and west of I-25. The weak cold front will move across the region this evening and into the early overnight time frame. High pressure will build over the area on Monday bringing cooler temperatures and less wind.
846 PM MST Sun Nov 6 2016 The upper trough axis is over the eastern half of the CWA right now moving east. Models still show the normal drainage patterns overnight to be disrupted a bit as the trough axis pushes east. An upper trough over eastern Colorado will continue east into Kansas tonight. Minimum temperatures will be similar tonight to last night, although cooler over the eastern plains by 2 to 6 degrees. High surface pressure will be pushing in a dry cold front in after midnight and into Monday, turning winds northerly. Post frontal airmass will limit max temperatures a few degrees cooler over the plains, with temperatures over the mountains being similar. This week's weather will be dominated by a large blocking ridge over the central Rockies.
This evening an upper level low was pushing eastward into the Oklahoma Texas Panhandles. while additional showers and thunderstorms were occurring over North Texas and the Texas Panhandle with the main upper low. with continuing chances during the Monday with the main upper low. have adjusted pop/wx grids based on current trends with radar/short term guidance and also tried to account for the lowering/warming of temps during the night across the region based on the mentioned above.
although will have to overcome quite a bit a dry air in the lower 16kft.
High pressure will bring dry and warm weather through the next seven days.
Positioning of a western Plains upper trough will keep the upper levels diffulent.
556 PM EST Sun Nov 6 2016 A high amplitude ridge of high pressure builds across the region tonight through Monday night bringing clear skies and light winds.
The low level ridge center currently located due north of the region is expected to slide off to the east this evening.
500 PM CST Sun Nov 6 2016 Quiet weather will prevail across central and southeast Illinois through Monday, as a sprawling ridge of high pressure extending from Quebec to the Gulf Coast continues to dominate the weather. Despite weak southeasterly return flow on the back side of the high, excellent radiational cooling of the dry airmass will allow low temperatures tonight to drop into the lower 40s. a broad upper trough over the southern Rockies will progress slowly into the southern Plains and help draw moisture northward ahead of the approaching northern features.
Byrd A well-defined upper trof will dig through the upper MS Valley and into the western Great Lakes region on Monday night, with some slight phasing with the broad/weak upper trof centered through the Plains.
High pressure continues to dominate the mid state, with above average temperatures to linger through the work week.
with periods of rainfall/isolated thunder persisting into Monday as the main upper trof enters the southern Plains. with highs generally in the low/mid 60s.
Clear skies tomorrow morning should give way to some cirrus moving in from the southwest as the upper ridge inches east.
Kept the low PoPs over the SW mountains as upslope flow could help produce some light showers. At 20Z, the cold front was from KGGW to near Hardin, and was expected to be through the region by 00Z Monday. Strong upper ridging will then build over the area through Tue. The NAEFS showed this ridge was stronger than climatology for this time of year.
616 PM EST Sun Nov 6 2016 High pressure centered over the Lake Ontario will drift east and then south.
The upper level low continues to weaken as it ejects onto the plains of Kansas. It will phase with a northern system/trough moving across the northern rockies over the next 24 hours. A weak sfc cold front moving across the area will result in winds becoming northerly tomorrow. Temps at or a little cooler than today even with more sun.
524 PM CST Sun Nov 6 2016 An upper level trough at 500 mb currently over Colorado will continue moving northward tonight, bringing an abnormally moist airmass into the region. Have nudged pops up some, but only into the lower chance range. Drier and cooler air will filter into the region from the northwest on Monday.