Aikyam-Lab/Synoptic-Bench huggingface dataset:
A low pressure system off the coast of Washington was spinning mid and high level clouds across our area.
738 PM EDT SUN JUN 19 2016 After one more warm day, a cold front should bring showers and thunderstorms on Monday night, as well as a return to near normal temperatures. While the main rainmaker during the near term forecast will come with the passage of a cold front Monday night, have added slight chance pops at all locations during the day on Monday.
829 PM EDT SUN JUN 19 2016 It will be a pleasant night tonight as sfc ridging builds across our forecast area. Deep layer ridging will prevail through the night.
This will keep the cooler spots around 56 degrees, while ridgetops cool to the lower 60s. The majority of the short term period will feature warm and dry weather across eastern Kentucky, as a ridge of high pressure remains in place just a bit longer. Tonights weather will feature modest ridge valley temperature differences, with ridgetop lows around 60 expected, while the valleys are forecast to drop into the low to mid 50s. Cloud cover will gradually be on the increase on Monday, as a cold front approaches from the north.
/issued 943 PM CDT SUN JUN 19 2016/ High pressure at the surface and aloft prevails across the Mid- South. Temps range from the lower 70s along the Tennessee River to the lower 80s in the Delta. Temperatures will climb a degree or two warmer than today.
Isolated to scattered convection will develop once again during peak daytime heating hours, mainly along an inverted trough slipping underneath the strong upper ridge over much of the southern CONUS. The Four State Region remains on the Southeast Periphery of a large upper level ridge of high pressure centered just Southeast of the Four Corners Region that reached to the east across the country to the Northeast States.
1044 PM EDT SUN JUN 19 2016 Dry high pressure will build into the region through Monday. Dry high pressure centered near the area will dominate.
955 PM PDT SUN JUN 19 2016 High pressures in place over NorCal will result in a warming trend with high temperatures nearing 100 degrees by middle of the week. Low pressure over the Pac NW will keep the beastly heat from the Four-Corners high from spreading too far into Norcal.
Focus for storm development is a cold front tickling the far western edge of the CWA at mid afternoon per visible satellite. KABR radar showing numerous discontinuities, likely the trailing one approaching the site the lower level moisture discontinuity which will represent the end of the convective threat. As boundary slows a bit pushing south into the warmer ridging to south and continued presence of elevated instability through the Missouri corridor, lingering upper forcing could generate an isolated shower or thunderstorm later tonight into very early Monday morning. Patchy mid clouds will continue to drop southward, but could again see a slight increase in shower/thunder chances toward very late afternoon in the lower Missouri valley with frontogenetic mid levels in exiting jet streak.
924 PM EDT SUN JUN 19 2016 High pressure situated southeast of the area will allow for dry conditions across the region tonight. A cold front will approach the area on Monday and move through Monday night.
932 PM EDT SUN JUN 19 2016 After one more warm day, a cold front should bring showers and thunderstorms on Monday night, as well as a return to near normal temperatures. While the main rainmaker during the near term forecast will come with the passage of a cold front Monday night, have added slight chance pops at all locations during the day on Monday.
A similar pattern can be expected tomorrow as eastern Texas falls under the relatively weaker southeastern belly of the gargantuan 600 dam ridge centered over the Four Corners.
943 PM CDT SUN JUN 19 2016 High pressure at the surface and aloft prevails across the Mid- South. Temps range from the lower 70s along the Tennessee River to the lower 80s in the Delta. Temperatures will climb a degree or two warmer than today.
744 PM EDT SUN JUN 19 2016 High pressure centered offshore will continue to provide a warm southwest flow through Monday night.
A strong ridge of high pressure will result in record heat again Monday.
A cold front was moving slowly eastward into northeast SD/west central MN this afternoon. Otherwise, the models all show cooler and drier Canadian air building into the region tonight and Monday as high pressure ridging builds in. This will bring mostly sunny skies and below normal temperatures to the region on Monday with highs in the upper 70s to the lower 80s.
836 PM EDT SUN JUN 19 2016 High pressure into Monday.
541 PM MDT SUN JUN 19 2016 00Z TAF CYCLE A few thunderstorms over the Sangre de Cristos are struggling to hold together as they move west off the high terrain.
735 PM EDT Sun Jun 19 2016 A ridge of high pressure will remain over the north country through Monday, with high temperatures on Monday in the upper 80s to lower 90s. A cold front will move east across the region Monday night, with a chance of showers and thunderstorms.
Cooler valleys have dropped into the low to mid 60s, well on their way down to the current forecast lows in the mid 50s. Current lows in the mid 50s look very reasonable for the valleys, with ridges in the lower 60s. A large ridge continues to hold strong across the majority of the CONUS through the Mid-Atlantic states.
923 PM EDT SAT JUN 18 2016 Cool and dry high pressure will extend down the East Coast through the weekend. High pressure across the region will continue to allow for near to slightly below normal high temps on Sunday. Thus, expect we should see near to slightly warmer temps for Sunday, with mostly sunny skies. Expect high temps will be in the lower to mid 80s. More of the same is expected on Sunday night, though the center of the high is forecast to shift a bit south and westward. Thus, given this and airmass modification expect overnight lows will generally be a few degrees warmer than tonight's values. Expect lows to range from the lower 50s in the usual rural cold spots to near 60 in the urban areas.
1255 AM EDT SUN JUN 19 2016 Abnormally dry and cool high pressure will linger across the region through the weekend.
(Issued 235 PM CDT SAT JUN 18 2016) The inverted trough was indicated by the 19z surface analysis and IR/visible satellite imagery to be moving southwest into the Tennessee valley this afternoon. Partly cloudy to mostly cloudy skies were indicated across the forecast area with temps in the low to mid 80s. Have trended closer to the slightly warmer NAM model temps for tonight's low temps.
758 PM EDT SAT JUN 18 2016 High pressure will allow for dry conditions for the remainder of the weekend.
707 PM CDT SAT JUN 18 2016 A backdoor cold front helped to lower the dewpoints today making it feel not as hot as the previous several days. This will allow for warmer dewpoints to return.
The center of upper level ridge will be located northwest of the area on Sunday. A weak trough on southern periphery of upper ridge will approach the area tomorrow.
Will maintain mention of showers and thunderstorms through midnight across southern zones due to low-level trough axis still forecast to linger across the region.
714 PM EDT SAT JUN 18 2016 Abnormally dry and cool high pressure will linger across the region through the weekend.
The synoptic pattern early this afternoon features an elongated ridge across much of the central CONUS into the Ohio Valley. On Sunday, the upper-level ridging will build more into the region.
Tonight and Sunday The latest RAP analysis and satellite/radar imagery show a weak cold front stretching southeast across Ontario and into northern Minnesota early this afternoon. Southerly winds will be a tad stronger than last nights, so temps will be warmer. Will go with lows in the low to mid 60s. As the next cold front slides east across the northern Plains, northern Wisconsin will be in the warm sector without much in the way of forcing to trigger storms despite warmer temperatures.
1015 PM CDT SAT JUN 18 2016 A weak outflow boundary left behind by the complex of storms that moved south through southeast Texas into Houston is currently draped along the Highway 77 corridor from Lexington to La Grange to Hallettsville.
646 PM CDT SAT JUN 18 2016 High pressure centered through the Great Lakes region continues to dominate the weather bringing low humidity and seasonable temperatures. The high will gradually retreat eastward over the next 24 hours resulting in slowly veering low level flow tonight and gradual increase in moisture, and continuation of tranquil weather. This coupled with the expansion and intensification of a large ridge aloft will result in the return of more typical summer heat and humidity.
1026 PM EDT SAT JUN 18 2016 Abnormally dry and cool high pressure will linger across the region through the weekend.
Upper level low to the northwest of the CWA continues to lift north and east, and the area is transitioning rapidly to a drier southwest flow as a Four Corner High begins to build.
1012 PM EDT SAT JUN 18 2016 Nice quiet evening compared to recent days as CAD wedge providing welcomed stabilized environment and cooler temps with easterly fetch and overrunning cloud cover. /Issued 800 PM EDT SAT JUN 18 2016/ Strong easterly flow associated with the high pressure centered over the mid Atlantic states today continued to bring low level moisture into north and central GA this afternoon. High pressure and easterly low level flow will persist into the remainder of the short term.
Stronger northerly flow aloft and cooler H5 temperatures also exists across the eastern third of the CWA along the periphery of the upper level ridge centered to the northwest across NM into CO. Since temperatures did not get as warm today thanks to the earlier outflow, went on the cooler side of guidance for overnight lows. Temperatures expected to remain in the lower to mid 90s area-wide on Sunday as thicknesses continue to drop with ridge axis shifting further north as an easterly wave approached the eastern part of the state.
With temperatures improving slightly tomorrow (cooler than the past few days), heat indices will only climb into the mid to upper 90s with the mid 60s to low 70s dew points. A broad 500 mb ridge will remain in place across the western 2/3rds of the country, with subtle short wave troughs attempting to move across the plains, bringing low chances for precipitation at various times over the next several days.
946 PM EDT SAT JUN 18 2016 High pressure will allow for dry conditions for the remainder of the weekend.
Some small threat of thunder along the northern periphery of the cwa into tonight as the warm front develops and lifts north into northern MN. Expect storms to start firing by early Sunday eve (between 3-6 pm) over western Minnesota, once the approaching front and mid/upper trough along the Canadian border act to erode the cap.
759 PM EDT SAT JUN 18 2016 Cool and dry high pressure will extend down the East Coast through the weekend. High pressure across the region will continue to allow for near to slightly below normal high temps on Sunday. Thus, expect we should see near to slightly warmer temps for Sunday, with mostly sunny skies. Expect high temps will be in the lower to mid 80s. More of the same is expected on Sunday night, though the center of the high is forecast to shift a bit south and westward. Thus, given this and airmass modification expect overnight lows will generally be a few degrees warmer than tonight's values. Expect lows to range from the lower 50s in the usual rural cold spots to near 60 in the urban areas.
817 PM EDT SAT JUN 18 2016 High pressure continues to extend into lower MI from the ese, sustaining a warm but dry airmass. This will pump more moisture into the region, so that our minimum relative humidity is expected to be around 30% for the low end instead to 25% like yesterday and today. Sunday night, the models are showing the typical type of northern Michigan cold front "precipitation split" over the region. This looks like it is due to the cold front outrunning the 500 mb jet streak in W Lake Superior.
Large ridge of high pressure aloft should make for a dry short term. A low level weakness under the ridge will retrogress westward across the region tonight and Sunday, and may generate an isolated shower here and there.
High pressure to the north will build south into the area tonight advecting in drier air. Low temperatures tonight will range from the upper 60s over interior se Ga to the low/mid 70s over ne Fl and coastal se Ga. Northeast surge has reached the ne Fl coast north of SAUF1 and will continue to spread down the coast tonight as high pressure builds in from the north.
1123 PM EDT SAT JUN 18 2016 As the ridge to our west retrogrades and intensifies a trough will eventually develop over the eastern United States. Ahead of the developing trough the next two days will be warmer than normal.
Sfc cyclogenesis is expected this evening across eastern Montana and the Dakotas as an upper level low slides east across the PacNW and into the northern Rockies. The Pine Ridge and areas to the north should see the strongest winds in our forecast area, with speeds of 25 to 35 mph gusting to 50 mph likely late tonight through early Sunday morning as a rather strong low level jet develops. Wouldn't be surprised to see a few locally higher gusts to around 55 mph though especially along the spine of Pine Ridge as H85 winds from both the GFS and NAM are progged to approach 50 kts. Sunday will be slightly cooler than today, although not by much, in the wake of the leeside trough exiting to the east and a weak Pacific front sliding south over the area Sunday morning.
Afternoon water vapor satellite imagery is showing a rather amplified upper/mid level trough positioned just east of the eastern seaboard, while deep moisture remains in place across Florida to the south of an incoming frontal boundary. The east/northeast winds will favor the highest rain chances close to the west coast during the late afternoon and early evening, particularly over southwest Florida.
Rest of the CWA under subsidence with surface ridging over the region. Weak surface cape values in the 400-600 J/kg range in the Hill City/Norton areas and dewpts in the lower 60s. along with proximity to the trough could provide enough instability to trigger a few storms. H5 ridge fully entrenched over the Central Plains is going to give the region another day well into the 90s.
TES High pressure centered through the Great Lakes region continues to dominate the weather bringing low humidity and seasonable temperatures. The high will gradually retreat eastward over the next 24 hours resulting in slowly veering low level flow tonight and gradual increase in moisture, and continuation of tranquil weather. This coupled with the expansion and intensification of a large ridge aloft will result in the return of more typical summer heat and humidity.
1152 PM CDT SAT JUN 18 2016 A backdoor cold front helped to lower the dewpoints today making it feel not as hot as the previous several days. This will allow for warmer dewpoints to return.
851 PM CDT SAT JUN 18 2016 Another quiet day over central Illinois as high pressure to our east brought us a mostly sunny sky and pleasantly warm temperatures with tolerable dew points in the mid 50s to low 60s.
A few scattered showers and/or thunderstorms remain across the area as the cold front progresses east but are lacking severe intensity. Closed upper low moves to southwest Alberta early Sunday morning. A cold front will continue to move across the area from west to east through the evening.
/Issued 332 PM EDT SAT JUN 18 2016/ Strong easterly flow associated with the high pressure centered over the mid Atlantic states today continued to bring low level moisture into north and central GA this afternoon. High pressure and easterly low level flow will persist into the remainder of the short term.
Temperatures were running 5 to 10 degrees cooler than yesterday afternoon with lower dewpoints and a light northeasterly breeze.
This high continues to bring dry air in from the Great Lakes and southern Ontario. As a result, only some mid and high clouds are expected as a short wave trough, currently located over Minnesota, moves east across the region tonight. With the models suggesting that we will mix up into the 900 to 850 mb range, this will result in the high temperatures climbing into the upper 80s and lower 90s. With the dew points only climbing into the lower to mid 60s, heat indices will remain in the lower and mid-90s.
939 PM EDT SAT JUN 18 2016 As the ridge to our west retrogrades and intensifies a trough will eventually develop over the eastern United States. Ahead of the developing trough the next two days will be warmer than normal.
An upper level low pressure area over the north central Gulf of Mexico and a weak inverted upper level trough over the northeast gulf will shift westward over the next 24 hours. This will make way for an upper level ridge north of the region to build southward and strengthen over the southeast conus through late Sunday afternoon. Low temperatures tonight will be in the low 70s inland areas with mid 70s along the immediate coastal sections.
Eastern Texas falls on the weaker eastern edge of a large 600 dam 5h ridge centered over the Four Corners region.
East and southeast upslope winds will also keep the low level moisture in place for any showers or thunderstorms that develop.
An upper level low is bringing showers and isolated thunderstorms to the region.
Besides some minor hourly grid adjustments bridging afternoon into the evening, no other changes were needed at this time.
A warming and drying trend is forecast for Father's Day as high pressure builds westward from the Desert Southwest.
Convection developing along a cold front that will sweep across the state overnight.
Otherwise, the models show an upper level low pressure area over the Pacific Northwest kicking northeast and across southern Canada into Sunday night. A cold front will also be sweeping quickly across the region on Sunday. With the winds tonight and warmer air advecting in. temperatures should only fall into the lower to mid 70s tonight. On Sunday afternoon, expect scattered thunderstorms to develop along the cold front as it moves into our eastern cwa as the cap weakens along with strong forcing along the front.
845 PM CDT SAT JUN 18 2016 Strong upper high is situated over the desert SW while our area is situated on the eastern periphery of that upper ridge.
935 PM EDT SAT JUN 18 2016 Skies are partly cloudy with temperatures in the lower to mid 80s along the Florida Keys. Meanwhile, local radars are detecting only isolated showers along the Lower and Middle Keys. Surface wise, a ridge lies across our entire region and into the Gulf of Mexico, resulting in variable to west winds of 10 knots or less. Status quo with a deep tropospheric ridge anchored across our region. Subsequently, isolated dime pops with low temperatures ranging between the mid 70s to the lower 80s will be retained. With the close proximity of a subtle ridge axis, winds will generally be variable at 10 knots or less on our marine district.
Dry air as indicated by dew points in the upper 40s to mid 50s should allow for some locations to dip below 60 again late tonight, though overall lows should be 2 to 4 degrees warmer than last night across the CWA.
Current lows in the mid 50s look very reasonable for the valleys, with ridges in the lower 60s. A large ridge continues to hold strong across the majority of the CONUS through the Mid-Atlantic states.
Rain cooled air from the widespread coverage of showers and storms earlier this afternoon and evening has allowed temperatures to already drop into the low to mid 70s and little change in these values are expected for the rest of the night.
An upper low will become cut-off over the Atlantic ocean east of the Carolinas on Sunday. This will help pull cooler and drier air down the east side of the Appalachian Mountains and into Georgia and Alabama.
Middle Tennessee remains under the influence of high pressure situated to our east, and expect very little change in the pattern over the next 24 hrs.
Hysplit backward trajectories reveal this residual EML originated over the central Rockies in Colorado and has been maintained downstream in subsident environment associated with mean ridging. Further east across central Oklahoma isolated to scattered convection reformed this afternoon along the periphery of elongating upper high, and in the more convergent quadrant of remaining MCV from early morning convection. On the southwest edge of the upper high across the southeast Texas Panhandle will be where a small chance of convection exists for our area is late tonight. East and southeast upslope winds will also keep the low level moisture in place for any showers or thunderstorms that develop.
Massive upper level ridge expanding east across the Great Valley will lead to continued drying and stabilizing of the atmosphere across the region.
742 PM EDT SAT JUN 18 2016 Aviation High pressure will continue to result in dry and very warm conditions through Sunday with high temperatures near 90 degrees.
613 PM MDT SAT JUN 18 2016 Dry and unseasonably hot southwest flow will continue tonight as a positively tilted area of high pressure aloft extends from the desert southwest into the central high plains. However, the center of the high sets up in the vicinity of Durango which prevents moisture from moving into the area.
Weak inverted trough, and decent low level moisture seems to be enough to keep those few lingering showers going.
The forecast is basically on track tonight with high pressure in place across the region.
Cumulus field back through the James and Missouri valleys also dwindling as mixing bumps up into the warmer and drier air aloft. With temperatures aloft continuing to warm through the night and into early Sunday, should set up for a quiet time into at least early afternoon on Sunday with broad positive tilt ridge nosing in across the area. If moisture pools to a greater degree, or if mixes warmer, would likely see enough offset in heat or moisture to keep in the general range of going apparent temperatures. Cold front races southeast through the region Sunday evening, with showers and thunderstorm chances increasing along the front with earlier capping eroding.
Ridge winds were now peaking around 50-55 mph with most surface winds now in the 10-15 mph range with gusts 25 mph. Hohmann High pressure will build into the Great Basin with a return to summer conditions for the upcoming week. Winds will return to more typical afternoon and evening breezes with temperatures rising into the 80s across the Sierra valleys and 90s in the lower elevations. /Issued 254 PM PDT SAT JUN 18 2016/ Low pressure will continue to produce breezy winds through this evening along with chances for showers and thunderstorms north of Interstate 80 through this afternoon.
However, I believe the main cold front is still over central Montana and will push through Billings late this evening, and then through Broadus around 1-2 am. An upper low over the Pacific northwest coast will continue to move inland into northern Idaho this afternoon into this evening. As this low moves east it will swing a strong cold front across our western areas early evening and the remaining portions of our forecast late this evening into the early morning hours Sunday. Drier air aloft has mixed down this afternoon from Livingston to Sheridan resulting in temperatures climbing into the 90s with humidities into the lower teens.
Could be a candidate for both the high min and max temperature records on Sunday. Broad high pressure aloft centered across New Mexico will shift a bit North and become more elongated across Colorado on Sunday.
a low pressure system from the northwest will bring periods of precipitation. Slightly warmer for Tuesday.