Aikyam-Lab/Synoptic-Bench huggingface dataset:
Boundary looks to stall for most of the day as it's driving upper level trough and jet max are still back across GA/N FL and don't dig further south until late tonight. Have kept the mention for a few late afternoon/early evening storms over the warm Atlantic as the upper level trough swings down and brings a little better instability. The main axis of the upper level trough will swing through late tonight ushering out the front with drier air filtering in from the northwest. Northerly flow will bring in cooler temps the next two nights with lows dropping into the mid-upper 50s over the interior and Gulf coast and low- mid 60s along the Gulf coast.
542 AM EST Tue Nov 15 2016 Early this morning light rain showers associated with a passing trough were putting down measurable precip over western KY and into northwest TN. Period of Above Normal Temperatures This Week Then Much Colder Upper level ridging will strengthen over the Ohio Valley Thu/Fri.
The low temperature for Saturday morning is expected to be near the midnight readings, with temperatures steady or slowly climbing through sunrise, as temperatures at 850 mb climb quickly. Expect SW winds to remain gusty for a couple hours after sunrise this morning, but rapidly weaken after 9 AM as the low level jet dissolves and the pressure gradient rapidly weakens. Afternoon temperatures will range from the lower 60s east to near 70 from Elkhart to Liberal, some 30 degrees warmer than yesterday.
121 AM EST Sat Feb 4 2017 Cold high pressure will build into the forecast area from the northwest tonight and dominate Saturday.
1257 AM EST Sat Feb 4 2017 High pressure will move from northern Missouri to southern Ohio tonight causing clear skies and cold temperatures across our area. A weak low pressure system will move across the upper Great Lakes over the weekend causing increasing cloudiness and warmer temperatures across our area, but no precipitation.
A cold front will move South of the region this morning, as a high builds to the North. A coastal trough will develop in the onshore flow pattern this afternoon. The combination of the strong ridge and the trough will result in an enhanced Northeasterly flow pattern, bringing gusty winds ashore. The enhanced Northeast flow will continue into this evening, then weaken through the night as the trough wraps up into a low which moves off to the East.
102 AM EST Sat Feb 4 2017 VFR conditions under high pressure. Also made some updates to the overnight temperatures in Palm Beach County and portions of the interior where lower dewpoints continue to persist and temperatures could be a few degrees cooler than forecast previously. /issued 448 PM EST Fri Feb 3 2017/ Two centers of high pressure encompass the region, one centered in the Atlantic north of the Bahamas and the other in the northeastern Gulf. There is also an elongated cold front across the northern Gulf that is entering the Florida panhandle and then extends northeastward into the the Atlantic off the Carolinas coast. The cold front is forecast to slowly move to the southeast tonight into Saturday while becoming diffuse.
This will continue through the morning hours, although models are suggesting that the warmer air just above the surface will begin to erode the cooler surface air mass. Some breakup of the low clouds will be possible across the western half of the area for the afternoon. Temperatures will be warmer across all of the area, with the warmest conditions across those western areas that may see a little afternoon sun. Models have some differences in whether the low clouds persist into tonight, or even redevelop a little bit farther to the west. Better low level moisture in place areawide will lead to warmer overnight temperatures.
344 AM EST Sat Feb 4 2017 Snow shower activity continues into tonight before high pressure briefly builds into the North Country for Saturday and Saturday night.
A nose of warm air lies across Whitman, Latah, Benewah, Lewis/Nez Perce counties with temps in the mid 30s and rain with pockets of freezing rain/sleet.
319 AM CST Sat Feb 4 2017 Flat upper ridge stretch across the country this morning.
The high level cloud cover that was over most of the area earlier today has thinned per latest satellite imagery.
100 AM EST Sat Feb 4 2017 High pressure will build east across the area through the day on Saturday resulting in dry conditions and continued below normal temperatures.
High pressure now centered over the mid-Mississippi valley will provide for northeast winds through the remainder of tonight. /issued 350 PM CST Fri Feb 3 2017/ Broad high pressure has settled into the central US this afternoon and looks to migrate to the east coast by tmrw aftn. Temps have ranged from the teens over the upper plain states to the lower 70s along the south Texas coast.
1139 PM EST Fri Feb 3 2017 High pressure centered over the Mid Mississippi Valley will move across the Upper Ohio Valley tomorrow and move off the Mid Atlantic Coast Saturday night.
This was resulting in a north wind that was helping send temperatures in the mid 30s already across the Highway 82 corridor. Though the high pressure center will not directly move over the area tonight, this dry air will still help the boundary layer decouple enough for winds to lessen and temps to bottom out in the 20s and 30s by Saturday morning.
Tonight next cold front to begin moving southeast through region with main energy and moisture to the northeast over Great Lakes region. With winds becoming sely to sly Sun night, have continued trends twd the warmer guidance. As a deeper trof approaches and sfc wave develops Mon night, shud see an increase in SHRA with isod to sct TS. TSRA threat will linger into Tues morning across ern portions of the CWA based on where upper trof is expected to be. Have continued warm trend on Tues with the cdfnt over the High Plains as of 12z Tues. A rapidly deepening trof shud plunge the cdfnt into the CWA by 00z Wed. Have trended warmer, but tempered somewhat to monitor trends. High pressure currently over the region will shift east overnight, bringing winds around to southerly as it does.
259 AM EST Sat Feb 4 2017 Canadian high pressure will build into and over the region through today.
Freezing Fog. Could see some gusts up to around 50 mph in the mountains and to around 40 mph over the lower elevations late tonight and Saturday. The strongest gusts over the lower elevations will tend to be closest to the mountains with lower gust speeds anticipated over the plains east of the I-25 corridor.
257 AM EST Sat Feb 4 2017 Canadian high pressure will build into and over the region through today.
1140 PM CST Fri Feb 3 2017 A warm front currently located across southwest Nebraska into northern Kansas, will lift north tonight as a strong southerly low level jet develops. Snow covered areas will be a bit cooler, in the mid 40s to mid 50s.
234 AM MST Sat Feb 4 2017 Latest upper air analysis depicts nearly zonal flow across the CONUS, with a subtle short wave trough moving onto the Plains. At the surface a warm front was beginning to progress east across the Tri-State Area as winds shifted from south to west. Today the warm front will be east of the Tri-State Area before mid morning. Highs today will much warmer than yesterday, nearing record values for Goodland and Burlington.
and temporarily lower to IFR drng the mrng Sat as coastal trough/warm front tries to push inland.
This drier airmass is also a bit colder as a strong high pressure building over the Ohio Valley will allow for an advective freeze setup overnight with temps dropping into the mid 20s for the north and into the mid to upper 30s central. This high pressure ridge eventually setup into a wedge like situations but its dry for Sat. As high pressure transitions from the Tennessee Valley into the Carolinas.
351 AM EST Sat Feb 4 2017 Arctic high pressure will extend across our region through tonight. Infrared satellite imagery this evening showing a very defined line to the clearing as a cold front moves south through our area this evening. This will leave lots of room for falling temperatures overnight as low temperatures bottom out in the low to middle 20s. Also some fairly strong gusts with the passage of the cold front this evening as high as 20-25 kts.
304 AM CST Sat Feb 4 2017 As high pressure continues to translate eastward away from the area and low pressure deepens across the Central Plains, breezy southwest winds will develop across much of the area today. Low clouds may dampen the diurnal rise but temperatures are still expected to rise well above normal for early Feb with highs ranging from around 50 in extreme Southeast KS to the low 60s over Central KS.
1012 PM MST Fri Feb 3 2017 Upper ridging is building across the CWA as the main axis slides across the northern Rockies. Cooler air will slide in behind a weak cold front through the day.
300 AM EST Sat Feb 4 2017 Cold high pressure will build into the forecast area from the northwest tonight and dominate Saturday.
Not much in the way of gustiness yet, but sustained winds along the Missouri have started to pick up to around 20 to 25 kts as the cold front approaches. The pressure gradient between the exiting high and low pressure over western MT will remain through at least 09Z Saturday. Expect the strongest winds across the higher elevations. Expect temperatures to top out in the mid 20s northwest, and in the upper 30s far south as a nose of warmer air slides in ahead of the cold front. Still, most locations will reach the low 30s before cooler northwest winds return to nearly the entire forecast area by 21z.
124 AM EST Sat Feb 4 2017 Canadian high pressure will build into and over the region overnight through Saturday.
Surface analysis this evening places a 1036 mb ridge of high pressure over Southern Indiana and Western Kentucky. Infrared satellite trends show a few high clouds moving across the Lower Mississippi Valley producing mostly clear skies. /issued 310 PM CST Fri Feb 3 2017/ High pressure continues to build into the Mid-South this afternoon. Skies have cleared, but cold northerly winds have kept temperatures in the lower to mid 40s. The high will shift east on Saturday. Winds should turn around to the south by the afternoon hours allowing temperatures to rebound into the mid 40s to the lower 50s.
339 AM EST Sat Feb 4 2017 High pressure will bring dry conditions and below normal temperatures today.
900 PM PST Fri Feb 3 2017 Corrected Aviation and Beaches Discussions Isolated light showers associated with a weak trough moving across the region will end early Saturday morning.
400 AM CST Sat Feb 4 2017 High pressure is ridging down into the forecast area from the Ohio Valley area to a stalled out front over the middle Gulf of Mexico. Northeast flow from the high is bringing cool conditions with readings in the mid 30s across Central Louisiana to low to mid 40s elsewhere. Rua The cool high pressure system will move off to the east during the day and set up along the Mid-Atlantic States. However, as winds become more southerly, the old stalled frontal boundary over the Gulf, will move back north and across the forecast area tonight as a warm front.
321 AM EST Sat Feb 4 2017 High pressure centered over the Ohio Valley will move off the Mid Atlantic Coast tonight.
1105 PM CST Fri Feb 3 2017 High pressure providing ample sunshine across the area this afternoon, but fairly chilly. High pressure drifts across the region tonight with increasing high/mid clouds after midnight as warm air advection kicks in. Warm air advection/isentropic lift increases across the area Saturday as low pressure moves toward the region from the Northern Plains. Snow chances continue into Saturday night as the low and cold front make passage through the area. Could be some loss of cloud ice as well for a transition to some light freezing drizzle.
This AM, we have a high pressure ridge over Eastern Conus with only high cirrus to note on satellite and only light winds and much cooler temperatures to note. Looking for mostly sunny skies today as ridging remains over the area for the most part, but the ridge center does shift toward the Atlantic Seaboard by this evening. This will set us up for low level return flow tonight around the retreating ridge, moisture advection, and isentropic lift to yield some late night rain showers across generally the northwest half of the state after midnight tonight. Look for warmer, but still cool readings tonight with dew points rising, cloudiness increasing, etc ahead of the shower activity.
This front will more or less dissipate today but high pressure will build in behind it for the weekend keeping the area void of any rain chances.
The low temperature for Saturday morning is expected to be near the midnight readings, with temperatures steady or slowly climbing through sunrise, as temperatures at 850 mb climb quickly. Expect SW winds to remain gusty for a couple hours after sunrise this morning, but rapidly weaken after 9 AM as the low level jet dissolves and the pressure gradient rapidly weakens. Afternoon temperatures will range from the lower 60s east to near 70 from Elkhart to Liberal, some 30 degrees warmer than yesterday. As this first disturbance moves east into the Mississippi Valley late this weekend a weak cold front will drop South into the central plains.
/Issued 915 PM CST Fri Feb 3 2017/ Tonight will be a few degrees cooler than this morning's lows with less clouds and lighter winds. High pressure center is across northern MO this evening.
845 PM PST Fri Feb 3 2017 Isolated light showers associated with a weak trough moving across the region will end early Saturday morning.
Zonal flow will prevail aloft today, while the main low-level ridge center will slide from the Ohio and Tennessee Valleys into the Mid- Atlantic. As the ridge moves east, northeast flow will become established down the Eastern Seaboard and will force a lee trough through the Tri-State region today. Low-clouds are expected along and ahead of the trough axis this morning, followed by low clouds filling in from the southeast as low-level transport shifts southeast over yesterday's frontal boundary. Expect highs to range from the upper 50s to low 60s across Georgia and Alabama, to the low to mid 60s across north Florida.
310 AM EST Sat Feb 4 2017 Canadian high pressure will build into and over the region through today.
Cigs will trend into IFR/MVFR Sat evening with vsby issues as well with warmer air returning Northward over our cooler ground.
High pressure over the Ohio valley will move on to the east coast by late tonight.
Compared to yesterday, this is about 20 to 30 degrees warmer than yesterday wherein highs were generally 6 to 15 degrees below normal. Meanwhile, low-level flow aloft will turn from southerly to westerly this morning as the aforementioned warm front advances eastward. This will usher in warmer air into the local forecast area with 850 hPa temperatures increasing appreciably, peaking 7-10 C in southwest NEB this afternoon.
350 AM CST Sat Feb 4 2017 An upper level blocking pattern was in place across the central North Pacific. This was resulting in a split flow flow entering the west coast - mainly rounding upper ridging situated over Alaska, and south of a low west of Vancouver. Another upper low further to the south near 35N150W was progressing eastward towards the California coast. Average highs for today are around 53, so a tad cooler than seasonable norms. With a southerly flow, lows will be warmer - into the upper 30s and around 40.
Weak ridging will take place over the Great Basin and Central Rockies tonight and bring drier conditions to the mountains. Models have been too quick to flush out the low clouds and fog so will keep some in the forecast through mid morning from Greeley to Sterling. Highs will be much warmer today over northeast Colorado with most locations reaching the 50s.
305 AM CST Sat Feb 4 2017 High pressure sliding east of the area today will bring winds around from the south and bring temperatures up into the lower to middle 40s.
1036 PM MST Fri Feb 3 2017 Height falls have begun over the central Rockies as the axis of a weak ridge at 500mb shifts into the high plains. Some light snow will spread across the higher terrain of northeast Utah and northwest Colorado by midnight. Winter Weather Advisory continues between 8pm tonight and 2pm Saturday in the northern mountains - a general 5 to 8 inches in the Parks/Elkheads with up to 6 inches in the higher elevations of the Flat Tops.
Thunderstorms with a risk of severe weather is the highlight of the short term period. Currently, an upper level low was centered over the Idaho/British Columbia border. The nose of the low level jet extended to northwestern ND, with the eastern edge near Bismarck. The upper level low is forecast to move east along the Canadian border, then lift northeast into southern Saskatchewan by this evening. An upper level ridge builds into the Northern Plains as another upper low moves into the west coast.
1012 AM EDT WED AUG 3 2016 High pressure will crest across the area this morning before sliding offshore into the gulf of Maine.
An upper level trough will enhance showers across southern and central Arizona today producing a high risk for flash flooding.
602 AM CDT WED AUG 3 2016 Latest water vapor imagery showing a weak mid-level trough swinging through northern WI early this morning with a broken line of showers/thunderstorms staying just north of the local forecast area. Otherwise, a rather muggy airmass was in place with temperatures as of 2 am ranging from the middle 60s to the lower 70s. Mid-level heights rebound behind departing wave with high pressure also in place at the surface. As a result, look for heat indices in the lower to middle 90s south of I-94. Attention focused on incoming fairly strong mid-level wave/cold front Thursday into Thursday night with ample warmth/moisture for the front to work with.
An upper ridge will remain in place across the southern plains with ridging eastward into the southeastern states. especially along and west of I-65 (where the upper ridging is stronger) where temps in the mid 90s will combine with dewpoints in the mid 70s to produce heat index values this afternoon of 106-108. East of I-65, less ridging will lead to lower temps and better coverage of showers and thunderstorms. Highs today will range from the mid 90s across western areas to the low 90s across eastern areas.
This will keep temperatures a little bit cooler east of I-65 today (highs in the upper 80s to around 90 degrees). More heating should allow highs to climb into the lower 90s in northwestern Alabama, despite increasing cloudiness and rain chances toward the mid to late afternoon hours. Increasing low level convergence and upper level forcing from a disturbance moving from southern Illinois around the upper ridge over Texas will be the trigger towards mid afternoon hours.
Weather pattern continues essentially unchanged over the next 24 hours with mid-level high pressure centered over North Texas continuing to dominate. and this will continue to be the case as the high center only very slowly drifts westward over the next 36 hours.
/ISSUED 306 AM CDT WED AUG 3 2016/ A mid and upper level ridge will spend the the next several days meandering around the south-central part of the country, all the while providing hot weather for North and Central Texas.
/Issued 422 AM CDT WED AUG 3 2016/ Upper level ridge centered across Texas will remain in place, with southwesterly flow and the best chances for thunderstorms across the western half of the Panhandles. Cloud cover today should keep high temperatures in the low 90s in most locations, and should also limit diurnally driven convection from the coverage we saw yesterday. The upper ridge will attempt to build northward again Thursday and should help temperatures warm into the upper 90s or low 100s. Beyond that, weak ridging remains across the Southern U.
/issued 402 AM CDT WED AUG 3 2016/ (Today and Tonight) Not much change to the ongoing forecast, with the upper level high still in place.
707 AM CDT WED AUG 3 2016 A strengthening southerly flow, ahead of an APPROACHING low pressure system, will bring increasing mid level temperatures today. A cold front will trigger showers and thunderstorms over northwest Minnesota this evening, tracking into north central Minnesota overnight. ELevated freezing levels around 14,000 ft and warm cloud processes will limit large hail threat. The strong cold front will move east of the Northland on Thursday Night, bringing the threat of showers and thunderstorms out of the region as the night wears on.
1045 AM EDT WED AUG 3 2016 The low cloud deck that has covered a large portion of the area this morning has been gradually scattering and dissipating through the late morning, and this trend will continue. upper ridge through the near term period. Models build a wedge-like ridge into the state from the northeast tonight through Thursday behind the surface wave lifting northeast. upper ridge tries to build back in from the west with 591dm sneaking into NW GA.
Temperature trends have been generally flat to slightly cooler the last couple days and for the most part that should continue.
442 AM PDT WED AUG 3 2016 The high will weaken into midweek.
Light and variable wind will become light southeast as the high drifts through the Great Lakes.
513 AM MDT WED AUG 3 2016 Current surface map places low across central Montana with trof through eastern Wyoming. Water vapor has upper low crossing the northern Rockies. NAM/HRRR/RAP in decent agreement with cold front timing, moving into northeast Wyoming and northwest South Dakota by late morning. Cold front moves south and east of forecast area late tonight, with cooler and dry conditions across the area for Thursday.
1207 PM EDT WED AUG 3 2016 High pressure will crest across the area this morning before sliding offshore into the gulf of Maine.
Current surface map places low across central Montana with trof through eastern Wyoming. Water vapor has upper low crossing the northern Rockies. NAM/HRRR/RAP in decent agreement with cold front timing, moving into northeast Wyoming and northwest South Dakota by late morning. Cold front moves south and east of forecast area late tonight, with cooler and dry conditions across the area for Thursday.
Upper trough and cooler air in our CWA today. Trough will exit east tonight, and Thursday will be warmer. Upper low will form off the nrn Calif coast Thursday. The low will advect monsoon moisture northward through Nevada beginning Thursday evening.
A weak upper level ridge will build into the region this afternoon then shift east of the Cascades on Thursday.
Thanks to the early morning cloudiness, temperatures are hovering in the low to mid 80's, however dewpoints continue to remain stifling in the upper 70's. The Florida Keys will reside on the southwestern flank of an Atlantic ridge of high pressure which will control our sensible weather elements today. An Atlantic ridge of high pressure extends across the Florida Peninsula today, with the Florida Keys residing on its southwestern flank. The ridge will then drift southward this weekend over our coastal waters.
543 AM MDT WED AUG 3 2016 12Z TAF CYCLE Upper high consolidating over TX today. Weak upper low over eastern AZ will keep convection going across western NM overnight.
Limited surface moisture may result in a few stray cumulus clouds over the mountain ridges today.
713 AM EDT WED AUG 3 2016 An area of weak high pressure stretching from the Great Lakes to New England will shift to the east on Thursday.
1045 AM EDT WED AUG 3 2016 Showers in SW VA are focused along a 850 mb inverted trough that models show staying east of our area today. Our northeast sections near this trough will have the best precip chances this afternoon.
1129 AM EDT WED AUG 3 2016 High pressure will remain in control of our weather for today and Thursday with warmer and partly sunny days. Minor temps update as well as cooler air lingers over the wrn cats. The higher resolution models continue to show isolated showers over the lake plain, perhaps in response to lake breeze boundaries. Our upper level ridge in place now does flatten a bit this afternoon but model soundings are very dry in the mid levels.