Aikyam-Lab/Synoptic-Bench huggingface dataset:
1130 PM CDT SAT APR 23 2016 BREEZY SOUTH WINDS TO VEER TO SW AS AN UPPER LEVEL SHORT WAVE TROUGH MOVES ACROSS THE HIGH PLAINS. /ISSUED 627 PM CDT SAT APR 23 2016/ AN UPPER LEVEL SHORT WAVE TROUGH WILL EJECT FROM THE COLORADO ROCKIES ONTO THE CENTRAL HIGH PLAINS SUNDAY MORNING. UNTIL THE UPPER LEVEL LOW PUSHES CLOSER TO THE REGION. WINDS WILL BE MOSTLY OUT OF THE WEST BY EARLY TOMORROW AFTERNOON ACROSS THE CAPROCK AND WILL INCREASE TO THE 25 MPH RANGE AS THE MAIN ENERGY FROM THE UPPER LOW PASSES TO OUR NORTH.
SUPPORTING A SHARPENING DRYLINE NEAR/WEST OF THE HIGHWAY 14 CORRIDOR.
334 AM MDT SUN APR 24 2016 MOISTURE DRAGGING ACROSS OUR NORTHERN ZONES THIS MORNING IN NORTHWEST FLOW WILL KEEP SNOW SHOWERS GOING OVER THE HIGHER PASSES WITH SCATTERED SHOWERS FOR THE ADJACENT VALLEYS THROUGH EARLY THIS AFTERNOON.
535 AM EDT SUN APR 24 2016 HIGH PRESSURE OVER PENNSYLVANIA WILL PUSH OFF THE EAST COAST MONDAY AS A WARM FRONT LIFTS NORTHEAST THRU THE AREA.
LOW CLOUDS HAVE BEGUN TO CLEAR FOR THE LOWER VALLEY. A 500MB TROUGH OVER NORTHERN MEXICO INTO THE TEXAS BIG BEND REGION AND A WEAK BOUNDARY EXTENDING ACROSS THE NORTHERN PORTIONS OF NUEVO LEON AND TAMAULIPAS. LOW TEMPERATURES TONIGHT WILL RANGE FROM THE MID TO UPPER 60S ACROSS THE RANCHLANDS TO THE LOWER 70S IN THE RIO GRANDE VALLEY UNDER MOSTLY CLOUDY SKIES.
714 PM EDT THU JUN 9 2016 High pressure will build across the region through Friday.
521 PM MDT THU JUN 9 2016 Upper ridge is centered over the CONUS, with a closed low over the Pacific Northwest. Chances increase this evening as weak wave/cold front being to push through the CWA. Flattened ridge sharpens on Friday behind this wave, and thermal ridge rebuilds.
422 PM PDT THU JUN 9 2016 An approaching upper-level trough along the West Coast has allowed for increased winds across Nevada.
An upper closed low is spinning off the Pacific Northwest coast tonight and is sending a couple of impulses into the region.
801 PM EDT THU JUN 9 2016 High pressure will move south and east of the area tonight which will allow temperatures to rise well above normal heading into the weekend.
956 PM EDT THU JUN 9 2016 High pressure will move south and east of the area tonight which will allow temperatures to rise well above normal heading into the weekend.
/issued 343 PM CDT THU JUN 9 2016/ Mid-afternoon sfc analysis shows high pressure in place across the Ohio Valley. ridging swwd and maintaining a light mostly erly flow across the forecast area attm. however am a little concerned as medium-range guidance also indicates good ridging developing over the wrn Gulf region/cntl CONUS at that time. By mid-week another upper low crossing the nrn tier is progged to drop swd around troffing over New England.
No other changes needed at this time as upper and mid level ridging dominates. Other than some passing patches of bkn cirrus at times, ridging influences sfc/aloft will provide for VFR/SKC conditions thru 10/24Z with light e/sely winds expected.
941 PM EDT THU JUN 9 2016 High pressure in control across the region tonight. Given the lower RH values over the Southern Valley. Chattanooga Airport, TN 60 93 67 94 / 0 0 0 10 Knoxville McGhee Tyson Airport, TN 60 89 65 93 / 0 0 0 10 Oak Ridge, TN 57 90 65 93 / 0 0 0 10 Tri Cities Airport, TN 53 87 62 90 / 0 10 0 10.
No other changes needed at this time as upper and mid level ridging dominates. Other than some passing patches of bkn cirrus at times, ridging influences sfc/aloft will provide for VFR/SKC conditions thru 11/06Z with light sely winds expected.
923 PM EDT THU JUN 9 2016 Low pressure will continue to move east of the region tonight.
624 PM MDT THU JUN 9 2016 High pressure amplifies across Colorado and will slowly shift its axis eastward over the next couple of days.
Gilchrist Previous discussion: Late this afternoon hot temperatures are apparent over the lower yellowstone valley where readings in the mid to upper 90s are fairly widespread. Friday will bring a brief respite as weak ridging builds back in.
Cannot rule out an isolated storm over northern counties (Converse/Niobrara), however believe the HRRR is overdone with the strengthening ridging. Heights rise even further on Friday, with highs a few degrees warmer than today under mostly clear skies.
A few showers may develop in Baker County after midnight as moisture ahead of an incoming upper level trough streams into the region. This trough will bring even cooler air to the region this weekend. Cooler air has come in behind last night's cold front, but even cooler air will come in behind another cold front late Friday and Friday night.
Upper trough over the West Coast will keep seasonably cool onshore flow in place through Friday.
A ridge of high pressure will remain over Colorado tonight and Friday. The latest HRRR keeps any developing tstms this aftn and evening over the higher terrain. It will remain capped across the northeast plains but enough mid level moisture to support another round of aftn tstms over the higher terrain.
610 PM CDT THU JUN 9 2016 Warm air moving into the region in earnest this afternoon and overnight as the thermal ridge over to the west broadens and shifts east. Southerly surface winds helping as well to usher the warmer air into the region.
Early this afternoon, temperatures were running generally in the lower to middle 80s under mostly sunny skies. This will occur due to the upper trough across northern New England and the maritimer sliding east with time and allowing the central US ridge to build/amplify eastward. The H8-H5 ridge will amplify and become centered across the Deep South beginning on Friday and continuing through the weekend.
445 PM PDT THU JUN 9 2016 Cooler, breezy and showery weather will impact the Inland Northwest today through the weekend.
Temperatures should be similar to last night's, and likely a couple of degrees warmer in northwest Arkansas due to slightly faster wind speeds and higher dew points. /ISSUED 332 PM CDT THU JUN 9 2016/ The ridge of high pressure continued to be the dominate feature across the Central United States today. Persistence forecasting is the name of the game into the weekend as these conditions continue underneath the ridge.
Southwest flow will continue across the region through the weekend as an upper trough deepens along the west coast. Moisture working north ahead of this trough will start to spread into Utah Friday night and remain in place through the weekend. Overall expect a generally quiet night with overnight mins on the milder side due in part to the high clouds and lingering winds in some spots.
952 PM CDT THU JUN 9 2016 Quiet night in store across the forecast area with surface ridging to the NE keeping winds generally light. Expect dry weather for tonight as high pressure remains in control. Lows will range from the lower 60s in the east to the mid 60s west. Broad upper ridging will continue over the region on Friday. with isolated afternoon and evening showers/storms mainly south of the Highway 84 corridor. Highs Friday will once again be in the low to mid 90s. Lows will be warmer.
/issued 310 PM CDT THU JUN 9 2016/ (Tonight and Friday) An upper level high will shift northeast across the Four Corners area overnight into Friday.
Still a low threat in the next hour or two near the Wyoming border near Cheyenne otherwise dry and relatively warm conditions will persist tonight with the upper ridge overhead. A ridge of high pressure will remain over Colorado tonight and Friday. The latest HRRR keeps any developing tstms this aftn and evening over the higher terrain. It will remain capped across the northeast plains but enough mid level moisture to support another round of aftn tstms over the higher terrain.
Diurnally instigated convection is expected over the highs Plains again, though a bit further east this evening. The weak or subtle mid/upper level trof over the high Plains is expected to drift ESE Friday into central Kansas/western Oklahoma.
Large scale features are still the trough over and off shore from the Pacific northwest. a building ridge from southern CA up into the western plains and a trough over the northeast.
723 PM EDT THU JUN 9 2016 Quiet weather through at least most of tonight, with the only potential for precip late tonight into early Fri as a warm front lifts into the area. Models suggest that the nrn Great Lakes will remain on the periphery of a mid/upper level ridge dominating the cntrl CONUS.
Lows will be a bit milder than previous nights with light easterly flow but will still make it down into the low to mid 60s.
High pressure at the surface, ridging aloft, and a relative lack of deep tropospheric moisture will be the dominant weather features in the short term.
The severe storms that moved out of northwest and into north central ND are still within an axis of MLCAPE of 2000+ J/kg given surface temperatures in the 90s and dewpoints in the lower 60s F in their inflow region. Latest water vapor imagery shows an upper low circulating just off of Vancouver Island with a downstream southwest flow into North Dakota. The upper level low will meander and head into Washington state Friday before ejecting northeast through southern Canada over the weekend. An associated surface cold front will advance from southern and eastern Montana into North Dakota tonight. Lcl heights will likely be a bit lower across north central ND as Minot sounding shows dewpoints in the lower 60s holding on through the evening.
Temperatures should be similar to last night's, and likely a couple of degrees warmer in northwest Arkansas due to slightly faster wind speeds and higher dew points.
1045 PM MDT THU JUN 9 2016 High pressure amplifies across Colorado and will slowly shift its axis eastward over the next couple of days.
609 PM PDT THU JUN 9 2016 Cooler, breezy and showery weather will impact the Inland Northwest today through the weekend.
Overall pattern remains largely unchanged with broad upper level ridging while a bit of a weakness remains trapped along the Gulf coast.
725 PM EDT THU JUN 9 2016 High pressure will build across the region through Friday.
/issued 319 PM CDT THU JUN 9 2016/ A weak upper level low pressure trough from western Kansas through the Texas Panhandle and western South Plains will very slowly edge east tonight and will be atop the area on Friday. The upper trough overhead certainly will be a valid reason for at least a low thunder mention Friday afternoon, but if showers persist well into the day Friday that will minimize development until very late in the day.
Due to the low level trough axis to our south and moist SW steering flow passing high and mid clouds are expected through the night. Low temperatures were on track to be warmer than last night with values in the upper 60s to lower 70s across SE Ga to the low/mid 70s across NE Florida and Atlantic coast.
Warm air moving into the region in earnest this afternoon and overnight as the thermal ridge over to the west broadens and shifts east. Southerly surface winds helping as well to usher the warmer air into the region.
the arrival of the higher momentum has pushed tidal levels one to one and a half feet above predicted levels.
Towards 10 pm or closer to midnight, storms are possible to push into far western and northwestern Oklahoma, as the short wave trough lifts east/northeast. The chances are maybe slightly higher and the activity could move into the fa sooner than the past few nights with showers/storms expected to develop closer to the area on the high plains into the panhandles this afternoon and evening. Models then show a trough moving into the western U.
531 PM MDT THU JUN 9 2016 Early afternoon WV satellite imagery and RAP analysis shows upper level ridging across the SW US. Due to the high bases, deep melting layer, and marginal CAPE values in our CWA, confidence in severe hail is lower. Friday: H5 ridge will be centered roughly across our western CWA, with large scale subsidence and an even drier air mass limiting any thunderstorm potential. Warmer guidance is even higher. With even minor bias corrections the mean/consensus guidance shows highs in the upper 90s, and it is certainly possible for some locations to reach the low 100s.
/ISSUED / The ridge of high pressure continued to be the dominate feature across the Central United States today. Persistence forecasting is the name of the game into the weekend as these conditions continue underneath the ridge.
High Pressure over eastern Kentucky and Ohio will continue to drift slowly eat tonight as a warm front lingers across Wisconsin. The warm front is expected to drift farther northeast late tonight. allowing warmer air to move into central Indiana overnight for the weekend. Strong High pressure over the middle of the United States will build across the Ohio Valley through the weekend.
An Atlantic ridge of high pressure will move northward from the western Caribbean Sea to the Florida peninsula overnight, and it will start to weaken on Friday.
646 PM CDT THU JUN 9 2016 As advertised, the upper level ridge across the rockies has started to move across the plains, or closer to our area. Temperatures across the Lower Missouri River Valley have risen for the most part into the upper 80s to lower 90s this afternoon. The upper level ridge will continue to slowly push eastward through the weekend. At this point, it appears the highest heat indices will remain just under advisory criteria with some locations reaching 100F certainly not out of the question. Globals indicate the ridge will begin to breakdown by the end of this upcoming weekend.
/Issued 444 PM CDT THU JUN 9 2016/ For tonight, another round of showers and tstms developing over the higher terrain in ern NM and srn CO and also near a sfc trof axis located in that region will head sewd into the fcst area this evening and tonight. In addition, a weak upper level low pressure system will track sewd around the ern periphery of an upper level ridge of high pressure and into our fcst area tonight, and may augment shower and tstm development.
High pressure is currently centered over central Kentucky at this time. This high will move slowly east tonight which will keep things dry and warm across the forecast area with lows Friday morning mainly in the 60s. As the high remains well east of the forecast area winds will become more southerly on Friday which will help warm temperatures up some. Temperatures will be a few degrees warmer than today with highs in the low to mid 90s.
A trough of low pressure moving into the Pacific Northwest will continue to bring cooler air to the lower elevations today and Friday.
637 PM CDT THU JUN 9 2016 Gulf of Alaska closed low with trough along the west coast. Large ridge into the central conus with upper wave moving through the central plains and close low over the Canadian Maritimes with trough along the eastern seaboard. This should move a pseudo cold front into Western Nebraska Friday.
Dewpoint temperatures are also pleasant for this time of year: in the low to mid 50s.
921 PM PDT THU JUN 9 2016 Cooler, breezy and showery weather will impact the Inland Northwest today through the weekend. Satellite shows a wave coming around the closed low off the WA coast and diving south. with valley highs struggling to get out of the lower to mid 50s.
Thunderstorms are expected to develop over the higher terrain and move northeast across the plains within the next hour or two.
/issued 324 PM CDT THU JUN 9 2016/ High pressure centered over eastern Kentucky this afternoon with an extension into eastern Texas.
The ridge aloft and the SE low level flow slowly increase moisture from the gulf of Mexico and Atlantic with time.
As a weak upper low pulls east of the I-35 Corridor tonight, onshore low level winds should be slightly increase over those from this morning.
Water-vapor imagery shows old upper low/trough finally retreating away toward the NE as drier NW flow aloft has spread into the area today. Afternoon temps in the low-mid 90s across the RGV, combined with dewpoints in the low-mid 70s, will yield heat index values in the 100-103F range, so there will be a definite warm feel to the air. Combined with broad mid-level ridging over the region on Friday, should stay mainly dry. 500-mb ridge axis nudges east, which could allow a disturbance or two (mainly per NAM) to rotate northward over the CWA.
830 PM EDT THU JUN 9 2016 Weak high pressure will build through Friday night.
Upper low over the Canadian Maritimes continues to pull out of the picture, giving way to a hot upper ridge building in from the Plains. Convection that has been developing along a warm front in southern Wisconsin and northern Illinois continues to weaken as it pushes into northern Indiana. GFS MOS a couple degrees warmer than NAM MOS, and will split the difference as recent overachieving temps leave me reluctant to write off the MAV numbers.
1219 AM EDT FRI JUN 10 2016 Low pressure will continue to move east of the region tonight.
The chances are maybe slightly higher and the activity could move into the fa sooner than the past few nights with showers/storms expected to develop closer to the area on the high plains into the panhandles this afternoon and evening. Models then show a trough moving into the western U.
Seasonable summer time weather will prevail to end the week as an upper level ridge of high pressure remains the dominant weather feature. The warming and moistening trend will continue into this weekend as southerly winds persist underneath the upper level ridge.
The highest amounts were centered on the southern Brevard area where between 3 to 5 inches fell (generally in less than 2-3 hours!).
1147 PM CDT THU JUN 9 2016 Gulf of Alaska closed low with trough along the west coast. Large ridge into the central conus with upper wave moving through the central plains and close low over the Canadian Maritimes with trough along the eastern seaboard. This should move a pseudo cold front into Western Nebraska Friday.
An upper trough over the West Coast will keep seasonably cool onshore flow in place through Friday.
220 PM EDT WED SEP 7 2016 High pressure will remain over the region this period, with dry air in place. Temperatures will recover Thursday afternoon back into the lower 90s, with middle to upper 80s near the coast. High pressure at the surface and aloft will remain over the area this period. A weak inverted upper trough is forecast to be just off the east coast of FL during the period. with high pressure ridge over Gulf Coast States.
226 PM MDT WED SEP 7 2016 Current surface map shows cold front moving through central South Dakota, with convection east of the forecast area. For tonight, high pressure builds across the western Dakotas with light winds and cool temperatures. Brief period of return flow on back side of high Thursday morning, with surface trof moving through western South Dakota Thursday afternoon. Gusty west winds will develop behind the trof.
A weak upper trough will move across the Central Plains tonight with the best chances for thunderstorms, around 40 percent, in the Pratt to Medicine Lodge areas.
Models still suggest the possibility for severe over the southern James River Valley into portions of south central ND where instability is enhanced and shear is strong ahead of a progressing trough. A well advertised upper level trough will move through the Northern Plains today with a frontal boundary moving west to east across the region. East of Bismarck in the James river valley the later onset of storms will allow for more surface heating, however CAPE values will still remain on the lower side.
114 PM EDT WED SEP 7 2016 High pressure dominates into Thursday. Upper level ridge over the Ohio valley will still be the dominant feature this period. A corridor of quite high PW's that has migrated around the upper ridge across northern Ohio and then down through western Pennsylvania into southern Virginia will bring widely scattered to scattered diurnal showers and storms mainly in the northern mountains this afternoon. As the stubborn low pressure system just off the Mid Atlantic coast finally lifts off to the northeast. combined with well above normal temperatures under the upper ridge. We look for temperatures Thursday reaching into the lower 90s in many places before clouds increase from the northwest later Thursday afternoon well ahead of a cold front.
Winds should remain light with a lax pressure gradient thanks to high pressure off to our NE. High pressure overhead with moisture confined to only the lower levels will limit shower and thunderstorm activity today. Temperatures cooled into the low to mid 70s northern areas to the upper 70s along the I-10 corridor to the lower 80s along the immediate coast. The weaker mid level flow around the dome of high pressure is now upon us with the moisture rich deeper and stronger mid level flow now across the central Gulf extended west into southern and central Texas.
214 PM CDT WED SEP 7 2016 Broad dome of high pressure aloft and at surface continues to dominate the weather as it anchors across the Mississippi and Tennessee valleys. Dew points circulated around the High are into the mid and upper 70s in parts of SEMO-SWIL.
108 PM EDT WED SEP 7 2016 The current weather pattern will not change much in the next 24 hours as high pressure will remain across the Southeast, so most of the forecast will have VFR conditions and calm winds. The exception may be TRI, where temps are expected to drop into the lower 60s tonight, so MVFR fog may be a possibility again.
119 PM CDT WED SEP 7 2016 Broad dome of high pressure aloft and at surface continues to dominate the weather as it anchors across the Mississippi and Tennessee valleys. Dew points circulated around the High are into the mid and upper 70s in parts of SEMO-SWIL.
/Thursday through Wednesday/ Precipitation is expected to move south of the the area by Thursday morning as much drier air arrives with high pressure moving in from the west.
This area should see a period of persistent rain and embedded thunder today and tonight as remnants from Tropical Cyclone Newton move across southeast Arizona.
121 PM EDT WED SEP 7 2016 Dry weather is expected to continue through the week with dry high pressure dominating.
455 PM EDT WED SEP 7 2016 High pressure remains stationed just south of the region, with return W/SW flow pulling warm and humid air back into the region. Tomorrow, even with the same airmass in place, a cold front will begin approaching the region from the NW.
The atmosphere should begin to decouple tonight mainly in the Nebraska Panhandle east of the lee side trof where residual low level moisture is still in place with dewpoints at KSNY currently in the lower 50s.
The tail end of a cold front will brush western Washington this evening accompanied by light rain, mainly over the northern half of Western Washington.
/ISSUED 310 AM CDT WED SEP 7 2016/ North and Central Texas remain under the influence of an upper level ridge while an upper level trough holds steady to our west across the southwestern Conus and northern Mexico.
347 PM EDT WED SEP 7 2016 High pressure remains stationed just south of the region, with return W/SW flow pulling warm and humid air back into the region. Tomorrow, even with the same airmass in place, a cold front will begin approaching the region from the NW. The upper level ridge that has been dominating across the southeastern CONUS will break down as a short wave trough will move from the Continental Divide, to the northern Plains, and eventually the Great Lakes and Ohio Valley regions by the weekend.
237 PM CDT WED SEP 7 2016 At 19z, the persistent upper level ridge axis was across the southeast U. Temps were ranging from the upper 80s in northeast Alabama to the lower 90s elsewhere.
312 PM CDT WED SEP 7 2016 High pressure was located over northwest Ontario at 1930Z with dry air, dewpoints in the lower to middle 50's, nosing into the Borderland to the north shore of Lake Superior. These showers were driven by a short wave trof lifting northeastward and upper level divergence from 250mb jet also lifting northeastward. A cold front sweeps through northeast Minnesota late tonight and northwest Wisconsin by 15Z/10am Thursday. Behind the front, high pressure will be building across the region.
353 PM EDT Wed Sep 7 2016 High pressure will prevail into this weekend.