Aikyam-Lab/Synoptic-Bench huggingface dataset:
402 PM EDT Sat Aug 26 2017 High pressure from Quebec will build over the area this weekend and remain across the region through the middle of this coming week. Cool Canadian air associated with an upper level trough will continue to impact the area through the period. Also removed mention of patchy fog except in northern Aroostook County where lows will dip into the low to mid 40s with clearing skies. The ridge over the area will break down around mid-week, allowing more active weather to return to the CWA.
In the upper levels a trough is over the East Coast. Lows will be in the low to mid 70s away from the immediate coast.
A few sprinkles have developed east of the Kansas turnpike early this morning on the back edge of a subtle mid-level trof. An upper trof will amplify across the Upper Midwest during Sunday becoming a closed low over Wisconsin by Sunday evening. The associated surface cold front will move south across central and southeast Kansas where it will encounter a combo of modest instability and shear in the afternoon/evening.
A weak area of low pressure is shown moving slowly northeast across our far northern areas.
258 PM CDT Sat Aug 26 2017 High pressure will settle in from the north across most of the CWA tonight. A dominant upper ridge will remain over the Rockies through midweek, with a weak trough across the Great Lakes/New England.
Another pleasant late summer day compliments of 1028 mb high pressure over eastern lower MI and ridging back into IL today. Moisture channel imagery shows major upper trof over eastern Canada that will serve to block the eastward progression of the Dakota wave.
242 PM EDT Sat Aug 26 2017 Dry, pleasant late August weather will persist through tomorrow night across the lower Ohio Valley. High pressure centered over the Great Lakes will keep a light easterly to northeasterly flow over the region. Another repeat performance for Sunday with just a couple degrees added to highs, which should bring most areas into the low to mid 80s. Another dry night expected Sunday night with lows in the lower 60s.
337 PM MDT Sat Aug 26 2017 While Harvey continues to affect the Texas coast, we will continue to deal with high pressure. This high pressure will meander across the Great Basin through the next several days with little change from day to day. One of the reasons it's not moving is because of the high pressure over us which also won't be moving.
148 PM EDT Fri Jun 2 2017 Aviation High pressure will provide another pleasant day before slipping away Saturday. Low pressure tracking east across the northern Great Lakes Region over the weekend will bring scattered showers and thunderstorms. Otherwise, another mostly sunny and pleasant day with warmer highs near 80s. First, the warm front related pcpn will probably struggle to move in from the west on Saturday and the whole day could easily end up being dry/warm with considerable sunshine.
High pressure will bring dry weather to central Indiana through Saturday evening.
345 PM EDT Fri Jun 2 2017 Low pressure will meander over the maritimes tonight through Saturday.
547 PM CDT Fri Jun 2 2017 Warmer weather has returned to the area as upper-level ridging builds into the central Plains. Subjective 12Z upper-air analysis indicates 500mb ridge extending from central KS through central NE/eastern SD/eastern ND and into MB. Upstream trough was located from MC/southern AB into northwest MT. The 850mb ridge had drifted eastward toward the MS and OH river valley areas, leaving the central US in southwesterly flow and with slowly increasing dewpoints.
The models didn't do a good job with the narrow line of showers easily seen on satellite today with the long wave trof. High pressure moves in overnight with winds becoming lighter from the west.
Weak lee trough allowing for light south winds locally with mainly clear skies.
Many areas have reached the convective temperatures of the lower 80s.
241 PM CDT Fri Jun 2 2017 18Z surface data has an inferred warm front, based on moisture, running from southern Illinois northwest into north central Iowa. Temperatures will be warmer than normal. The Highway 20 corridor from Dubuque to Freeport remains in the day 2 marginal risk area, and the severe risk looks minimal.
1140 AM MDT Fri Jun 2 2017 Current surface analysis shows weak cold front now from far northwest SD to northeast and central WY. Temps range from the upper 60s over northeast WY to the lower 80s over parts of south central SD. Also lowered high temps a bit across western portions of the CWA, with more clouds and cooler air pushing in. Upper ridge axis is now moving across the central Dakotas with southwest flow developing over the CWA. Broad low amplitude ridging will move into the region Saturday with dry weather and highs in the 80s.
257 PM CDT Fri Jun 2 2017 In the upper levels a positively tilted trough stretched from northwest Mexico into the south central plains. A northern stream trough was located across Montana and Wyoming. A piece of the northern upper level trough is expected to move southward through eastern Colorado Saturday afternoon and then through the panhandles Saturday night. This small upper level disturbance may be enough to trigger a better chance of showers and thunderstorms initially across the northwest CWA and then spreading southeast with time as the short wave trough moves south. The chances of showers and thunderstorms will still be there for the southeast half of the CWA since this area will be closest to the dynamics of the positively tilted trough.
233 PM EDT Fri Jun 2 2017 A warm front crosses Saturday.
438 PM EDT Fri Jun 2 2017 Low pressure will meander over the maritimes tonight through Saturday.
258 PM CDT Fri Jun 2 2017 A weak warm front oriented roughly north to south just west of the Mississippi River will remain nearly stationary through rest of today.
By midnight, models remove any mention of precipitation from the CWA as high pressure begins to build in to the west. One thing that has remained constant is an increase in high temperature day by day thanks to the high pressure.
Synoptically, an upper level low/trough is centered over New Mexico. Rain chances will continue into Saturday as the aforementioned upper level low/trough approaches the forecast area. The expected cloud cover/rainfall will help to keep high temperatures below seasonal normals, in the low to mid 80s.
348 PM EDT Fri Jun 2 2017 High pressure will allow for dry weather through at least Saturday night.
Not hot, as we're only climbing into the mid to upper 80s, but with dew points in the low 60s, there is some humidity out there. Showers and a few thunderstorms to our southwest could creep into counties closest the Alabama state line this afternoon, but with a ridge aloft, most of the activity has been getting squashed as it tries to enter Middle Tennessee.
520 PM EDT Fri Jun 2 2017 Moisture ahead of a weak trough will remain mainly south and east of the forecast area through Saturday.
Water vapor imagery and upper air analysis show on trough over west Texas and a second trough over the southern Rockies.
218 PM EDT Fri Jun 2 2017 High pressure builds across the region through Saturday offering sunshine and warm weather.
Muggy conditions will continue through the weekend along with a chance for scattered showers and thunderstorms as a broad upper level trough continues to advance eastward out of New Mexico.
247 PM CDT Fri Jun 2 2017 An upper trough will advance into the high plains tonight with height falls and steepening lapse rates. On Saturday, the front just southeast of the area will stall out as the upper trough washes out and focuses over the western Great Lakes.
High pressure should bring drier weather today through Saturday.
/issued 345 AM CDT Fri Jun 2 2017/ Quite a complicated forecast over the next few days as a slow moving upper trough and numerous outflow boundaries affect the region. The upper trough to our west will only slowly move east over the coming days. This trough will linger over Texas into the weekend with continued shower and storm chances over our region.
330 PM CDT Fri Jun 2 2017 Warmer weather has returned to the area as upper-level ridging builds into the central Plains. Subjective 12Z upper-air analysis indicates 500mb ridge extending from central KS through central NE/eastern SD/eastern ND and into MB. Upstream trough was located from MC/southern AB into northwest MT. The 850mb ridge had drifted eastward toward the MS and OH river valley areas, leaving the central US in southwesterly flow and with slowly increasing dewpoints.
An approaching low pressure trough will bring slightly cooler weather to the area over the weekend. Will still see a few more hours of heating, so we should get more stations reaching the lower 90s. Synoptically the weak ridge of high pressure will progress to the east later today while a longwave trough approaches the coast.
213 PM EDT Fri Jun 2 2017 Moisture ahead of a weak trough will remain mainly south and east of the forecast area through Saturday.
149 PM EDT Fri Jun 2 2017 High pressure will continue to cause fair weather across our area through tonight.
Region remains under the eastern edge of a weak and somewhat "dirty" upper ridge.
Scattered mid cloud continues to stream southward out of Western Ontario and into Michigan thanks to limited mid level moisture spilling over top of the upper level ridge axis. cooler near the lakes. Pattern begins to shift on Saturday as a warm front lifts NE into the Western Great Lakes region. Expect another warm day across the Northwoods for Saturday as CAA ahead of the low continues. Slow height falls from an incoming trough well to our northwest will likely lead to showers and scattered thunderstorms Saturday night as moisture increases (precipitable waters in the 1.
256 PM CDT Fri Jun 2 2017 Broad scale upper trough continues to slowly move east and into the southern plains. with the highest chances/areal coverage expected on Saturday as the upper low draws closer to eastern Oklahoma and northwest Arkansas.
315 PM EDT Fri Jun 02 2017 Weak high pressure will build into central NC through Saturday, then drift offshore Saturday night.
As discussed earlier, instability is not supportive of severe storms, but localized heavy rain will continue to be possible given slow storm movements combined with the high moisture content.
Saturday night rain chances will begin to increase from the northwest as the main trough axis begins shifting further southeast towards the region. Seasonable temperatures can be expected through the period, with lows tonight and tomorrow night in the low to mid 70s, and highs in the upper 80s to mid 90s.
200 PM EDT Fri Jun 2 2017 High pressure will continue to cause fair weather across our area through tonight.
614 PM EDT Fri Jun 2 2017 Aviation High pressure will continue to bring fair weather tonight into Saturday.
300 PM MDT Fri Jun 2 2017 Current surface analysis shows weak cold front now from central ND through western SD to southeast WY. The weekend looks to be dry and warm as ridge rebuilds over the region.
Currently, upper ridge axis moving into the Upper Mississippi Valley ahead of a mid level S/WV over the Western Dakotas. Ahead of the trough, thermal ridge extending north with 29-31C 925MB temperatures poking northward from far south central ND north-northeast into the Turtle Mountain region. Also accompanying the warm air is a very moist airmass with sfc dewpoint temperatures into the lower 60s.
126 PM EDT Fri Jun 2 2017 High pressure will bring pleasant and dry weather through Saturday.
312 PM EDT Fri Jun 02 2017 Weak high pressure will build into central NC through Saturday, then drift offshore Saturday night.
/Tonight through Saturday Night/ Weak warm front has continued to push north across the CWA today, with weak moisture advection aloft. The state to then remain in the warm sector as the weak frontal boundary drops through the state associated with the parent trough well to north across south central Canada.
A weal cold front will move through the area this evening. Weak high pressure will remain in place through Saturday night.
545 PM EDT Fri Jun 2 2017 High pressure builds across the region through Saturday offering sunshine and warm weather.
Expect increasing sunshine and milder temperatures for Saturday as weak high pressure moves into the region.
256 PM CDT Fri Jun 2 2017 Broad ridging across the western and central US is maintaining a summertime precipitation pattern across the region through the weekend.
241 PM CDT Fri Jun 2 2017 Wx map showing weak sfc trof over Western Gulf, with weak high pressure over the SE United States, keeping an east to southeast flow over the region. First, a slow moving upper level low/disturbance over Texas will continue to only drift east over the weekend.
149 PM EDT Fri Jun 2 2017 A warm front crosses Saturday.
Ridging aloft develops along with low and mid level drying, thus chances for showers and thunderstorms look quite slim. Even stronger ridging aloft builds in producing a mostly clear and quiet night with no showers or thunderstorms expected.
An upper low will meander over West Texas the next 48 hours continuing rain chances through the weekend.
This upper pattern changes slightly tonight into Saturday with very weak ridging actually developing over the area, but not enough to significantly hinder the west-east propagation of the upper disturbances across the area. These upper disturbances, combined with low level lift associated with the synoptic scale trough and numerous residual smaller outflow boundaries, and aided by the very moist airmass in place will continue to result in periods of scattered to occasionally numerous showers and thunderstorms. Highs on Saturday in the low to mid 80s.
248 PM EDT Fri Jun 2 2017 A trough of low pressure will remain over the area through Saturday.
High pressure will bring a warm and dry conditions with highs reaching near 90 degrees this weekend.
Short Term (Now through Saturday): A low pressure trough in the mid and upper level atmosphere over Northwest Mexico and U. Best moisture associated with the upper trough looks to remain north of Deep South Texas with trough orientation keeping a warmer and drier Westerly flow aloft AOA 700mb. At the surface and through the boundary layer, moisture charts continue to show low level moisture (mean RH 70%)AOB 800mb persisting and with Deep South TX in between the trough to the north and the ridge to the south a light ENE-ESE flow is expected tonight through Saturday. With the latest model package shows less than 20 percent for all inland areas will just paint the CWA with broad brush 20 percent to cover the lower uncertainty.
352 PM EDT Fri Jun 2 2017 High pressure centered over the Great Lakes will continue to build across the region into Saturday.
232 PM EDT Fri Jun 2 2017 High pressure moving slowly across the Ohio Valley will provide dry weather today through Saturday.
A weaker e-w boundary extends from the low along the ND/SD border then se to near RST. Main wave pushing across e MT/WY with a weaker impulse under the ridge axis over the central dakotas border region.
A segment of the upper trof over NM/W TX is progged to lift slowly northeast across Oklahoma on Saturday. The higher precipitable water values and weak steering flow should lend to slow/erratic movement of storms with potential for very localized heavy rainfall.
158 PM CDT Fri Jun 2 2017 Temperatures across the TN Valley are in the lower to middle 80s at this hour, with showers and thunderstorms continuing to develop mainly over Wrn portions of the CWFA. Training of cells will also need to be monitored for the threat of Flash Flooding, given that the steering flow in place isn't exceptionally strong (despite the nearing cold front).
356 PM EDT Fri Jun 2 2017 High pressure moving slowly across the Ohio Valley will provide dry weather through Saturday.
246 PM EDT Fri Jun 2 2017 Low pressure will meander over the maritimes tonight through Saturday.
139 PM EDT Fri Jun 2 2017 High pressure centered over the Western Lakes will build over the area today and linger into Saturday.
1242 PM CDT Fri Jun 2 2017 Early morning satellite imagery shows upper ridging building over the Northern and Central Plains while sharp troughing continues over the High Plains and just to the west of the ridge. Temperatures should top out in the upper 80s for most areas under the upper ridge. Sharp upper trough currently over the High Plains will move east into western Nebraska later tonight. This will continue to de- amplify as it moves across Nebraska along with a weak cold front. Meanwhile, upper level ridging will be amplifying over the Rockies while a closed low drops south out of Manitoba and passes just to the east of the area. Upper heights will build overhead into the early part of the week as the upper ridge slowly shifts east across the Central Plains.
Skies will remain mostly cloudy today with highs in the low to mid 80s.
Upper air analysis last evening showed split flow over the western part of the country with a trough to our west and southwesterly flow over TX. At the surface, high pressure was centered to the east and winds were from the southeast. The upper trough will remain stalled over the southwest today and tonight. Models show the upper pattern becoming progressive beginning Saturday with the trough in the southwest moving over TX.
547 PM EDT Fri Jun 2 2017 Moisture ahead of a weak trough will remain mainly south and east of the forecast area through Saturday.
643 PM EDT Fri Jun 2 2017 High pressure builds across the region through Saturday offering sunshine and warm weather.
244 PM CDT Fri Jun 2 2017 A mid level ridge and weak surface flow will persist through Saturday.
Low temperatures will be warmer than in recent nights, with readings generally in the lower to middle 60s.
Instability builds in the warm sector post the warm front, but some overlap. The system's cold front follows closely on the heels of the exiting warm front, tracking eastward across the region for the afternoon/evening hours.
18Z surface data has an inferred warm front, based on moisture, running from southern Illinois northwest into north central Iowa. Temperatures will be warmer than normal. The Highway 20 corridor from Dubuque to Freeport remains in the day 2 marginal risk area, and the severe risk looks minimal.
646 PM EDT Fri Jun 2 2017 High pressure centered over the Great Lakes will continue to build across the region into Saturday.
Additional support for thunderstorm development will come from the upper trough lifting out of the Rockies today and across the northern and central high plains this evening. Given the slow progression of the surface and upper trough and the associated thunderstorms across the area, in addition to the moisture being fed into the region and the recent heavy rainfalls received over portions of the forecast area, a flash flood watch has been posted from 3PM through midnight MDT for a selection of counties along the eastern Colorado border region of Colorado and northwest Kansas. above average warmth is on tap for the entire Tri State region as strong H5/H7 amplified ridging is expected to build over the Plains region.
Afternoon highs will peak in the low to mid 50s across the forecast area.
346 AM CST Tue Dec 19 2017 Water vapor imagery this morning showing a large upper low centered over central Canada with low amplitude trof across the northern tier states. cold air advection was spilling into the lower 48 with the leading edge of the front roughly from the upper midwest to the NE panhandle.
A cold front was entering northern Nebraska. A backdoor cold front will push through western Nebraska this morning, bringing a cooldown to the mid and upper 40s most areas. Synoptically, a positively tilted upper trough and closed low will drop through the Pacific Northwest.
413 AM EST Tue Dec 19 2017 Weak high pressure over the region today will move south tonight.
132 AM EST Tue Dec 19 2017 Low clouds continue to erode from west to east as drier comes in along with high pressure.
Aloft: Major amplification with a Wrn USA trof forming and gradually drifting E into the Cntrl USA.
406 AM EST Tue Dec 19 2017 Weak high pressure over the region today will move south tonight.
1117 PM CST Mon Dec 18 2017 An east to west oriented jet max will move through North Dakota tonight which will allow a cooler high pressure to drop south. Just a touch of a surface pressure gradient ahead of this high pressure should allow for mild Tuesday morning low temperatures, roughly mid to upper 20s in most locations. Even with the cooler air in place on Tuesday, high temperatures will be a good 10 to 15 degrees above normal.
254 AM EST Tue Dec 19 2017 A weak area of low pressure will track northwest of the region today into tonight.
Deep layered ridging remains firmly in place aloft with the mid level ridge centered across South Florida and the central Bahamas. Deep layered ridging will remain in place, keeping rain chances out of the forecast. A mid latitude trough will amplify across the United States this weekend will produce pressure falls in the Gulf of Mexico. Meanwhile, ridging aloft over the northwestern Atlantic will sharpen and strengthen surface ridging.
At sunrise, expecting temperatures ranging from the lower 20s NW to the mid 30s far SE.
1006 PM MST Mon Dec 18 2017 A low-amplitude ridge continues to build into the northern plains. At the surface, a weak trough covers the region.
1022 PM MST Mon Dec 18 2017 High pressure will nose over the area from the southwest tonight and Tuesday. A closed upper low will pass through southern New Mexico tonight and Tuesday placing the forecast area under the col created between this low center and zonal flow over the northern Rockies. The short term will remain dry but high clouds will ride over the top of the ridge so variable higher clouds are expected.
255 AM MST Tue Dec 19 2017 Low amplitude upper trough is crossing the northern Plains into the Great Lakes area. Weak ridging is building over the northern Rockies into the northern High Plains. At the surface, a cold front has just about made it all the way through the CWA to near the Nebraska border. This will bring warmer air back into northeast Wyoming into southwest and south central South Dakota where highs will reach into the 40s.
Also, an upper ridge exists across the western US, and just off the BC coast an upper level low dives south. This upper low will head towards the 4-corners region over the next couple of days.
304 AM CST Tue Dec 19 2017 A upper low centered near El Paso this morning has provided enough lift this morning to produce a few showers and thunderstorms across the area. This should be the trend through the day as the upper low lifts directly over the area.
1004 PM MST Mon Dec 18 2017 Weak upper low over NM will eject slowly eastward tonight and Tuesday, with upper flow gradually becoming more northwesterly across CO. Overnight low temps will be several degf warmer than last night across most of the area, as weak frontal boundary drops south through the plains and light w-nw winds keep ern mountain slopes and southeastern CO slightly better mixed.
131 AM EST Tue Dec 19 2017 A frontal boundary will continue to lift to the north overnight, with high pressure building in through Tuesday.
Slight ridging over the region tonight in advance of a deepening upper level trough moving down the Canadian coast. The trough will continue moving down the coast forming a closed low as it moves into northwest Washington late Tuesday. This will push a cold front through the forecast area in the late afternoon and evening hours increasing precipitation for the rest of the forecast area. Snow levels will remain 4000 to 6000 feet overnight and most of Tuesday and then lower to 2000 to 3500 feet behind the cold front. Cold front passage expected Tuesday afternoon and evening with increasing south winds ahead of the front switching to southwest-west after passage with speeds of 15-25 kts at times.
A low pressure system will move across the Tennessee Valley producing widespread low clouds/fog and rain (especially TYS and CHA).