Aikyam-Lab/Synoptic-Bench huggingface dataset:
806 AM EDT Tue Apr 18 2017 High pressure will ensure dry weather into Wednesday. The latter half of the week will feature increased rain chances as a series of low pressure systems affect the region. Highs will be around 10 degrees warmer than average.
946 AM EDT Tue Apr 18 2017 A weak cold front across along the NC and SC border will slowly move southward today and stall over the southern Midlands through Wednesday. Wednesday night the front will weaken and return northward as a ridge of high pressure builds in.
1057 AM MDT Tue Apr 18 2017 Current surface analysis shows low pressure over northeast SD now, with cold front now through the CWA, just moving through Winner in the last hour. Across the higher elevations of the Black Hills, mainly near or above 6000 ft, temperatures could become cold enough late tonight and Wednesday morning for accumulating snowfall. Several inches or more is certainly possible across the highest elevations of the northern and central Black Hills, especially from Deerfield to O'Neil Pass to Terry Peak, if pcpn changes over early enough later tonight. Highs on Wednesday will be on the cool side, 40s and lower 50s with some upper 30s across the highest Black Hills.
/issued 358 AM CDT Tue Apr 18 2017/ A low amplitude pattern will prevail over the lower 48 states the next few days. 5 inches and dewpoints in the lower 60s will combine with this shear axis to provide weak convective inhibition over the Midsouth.
However, the mid level trough axis is still draped across East Texas and with along with daytime heating, will allow for a second round of shower/thunderstorm activity is expected late this morning into the afternoon hours, focusing mainly along the coast and across the Coastal Plains. For Wednesday, the trough/low weakens even further but still should provide additional lift for isolated showers and thunderstorms late Wednesday morning into the afternoon, once again mainly across the Coastal Plains.
849 AM EDT Tue Apr 18 2017 Warm and mainly dry conds expected again today as weak high pressure ridge remains across the region, with only other feature a weakening back door cool frontal boundary drifting southward through the Carolinas that will trigger some isolated showers and storms from the Altamaha River Basin of inland SE GA northward during the afternoon hours. Another quiet night expected as frontal boundary north of the region washes out and high pressure ridge re-builds north of the area.
High pressure will continue to slide east of the Appalachians today and tonight as frontal boundary with broad area of isentropic lift associated with strengthening wave approaches from the soutwest this afternoon and tonight. High pressure slides to our east today. Expecting it to be mostly dry today however overrunning out ahead of a stationary/warm front will produce mid to upper level clouds across the region, especially in the south. Also, with cloud cover increasing tonight I pushed temps a bit warmer than guidance overnight across the southern half of the CWA. This flow will pump additional moisture while in the warm sector of next approaching cold front.
1025 AM CDT Tue Apr 18 2017 Will lower the highs for today as the widespread stratus will inhibit the break up of the cool boundary layer. High pressure moves east tonight with return flow increasing west into central.
Expect winds in the high country to gusts to 40 to 55 mph. This will bring stronger westerly flow to the higher terrain as well as isolated to low-end scattered showers to the central mts through the day. However, by late afternoon the winds will shift to a more north to northeast direction as a sfc cold front drops south across eastern Colorado.
Will have the highest PoPs through the night across the northern zones, from Converse county eastward into the northern Panhandle, where QG ascent is maximized. Temps will be cooler in the post frontal airmass, with highs mostly in the 50s to low 60s.
bringing warmer air into the region today. Low pressure currently over South Dakota will track into eastern Ontario by 12z Wed, pushing a cold front southward into Illinois tonight. With southerly winds and ample sunshine, afternoon high temperatures will soar into the lower to middle 80s. The low will track into the Great Lakes Wednesday night, pulling another cold front toward central Illinois.
An upper ridge will build over the region beginning Tuesday with warming temperatures through the end of the week, and potentially less active weather. Weak upper troughiness to remain over the Mississippi Valley, with upper ridge axis just to our south. Expect the seabreeze to again be active and potentially impact the eastern Midlands so will keep the high chance pops that were inherited. Temperatures should be a bit warmer as 500mb heights begin to rise with max temperatures expected in the low to mid 90s. An upper trough will approach the region over the weekend along with a frontal boundary pushing into the area which will provide increased chances of rain and possibly slightly lower max temperatures due to increased clouds and rain.
/EC/ Today through tonight: Broad mid-level troughing continues over the ArkLaMiss, along with a weak frontal boundary that extends across the northern portion of the area. This boundary will continue to be the focus of the bulk of thunderstorm development today, generally along the Highway 82 corridor. High temperatures will range from the mid 80s in the north to the low 90s in south this afternoon.
1256 PM EDT Mon Aug 14 2017 High pressure will remain across the Great Lakes and Ohio valley region today and tonight.
A mid to upper level trough is over the Pacific Northwest with mid to upper level ridges along the United States/Mexico border and over the northern Gulf of Mexico. The Plains impulse continues to track to the east as the trough deepens across the Western States shifting the western ridge south into Mexico.
1212 PM EDT Mon Aug 14 2017 High pressure will slide south of the region today into tonight. A cold front will approach on Tuesday and cross the area Tuesday night.
Main short wave trof currently located upstream over eastern MN into western WI will continue to track eastward next 12-18 hours. Light and variable winds will turn to the southeast this morning ahead of approaching weak surface trof. Winds will turn to the north to northeast later tonight into Tuesday as the trof moves through.
Deterministic GFS/ECMWF/NAM maintain an upper high pressure ridge with E-W axis across the extreme SRN CONUS/NRN Mexico Today, then shifts the ridge EWD somewhat as an upper level disturbance enters the Rockies/approaches the Plains Tonight/Tuesday. Yet, the CWA/MSA remains under the influence of the ridge.
Mid-level ridging and deep subsidence above 900mb will lead to another hot day with just a few cumulus clouds expected this afternoon. Tuesday, another dry day will be in store with slightly warmer temperatures and highest heat indices ranging from 110 to 113.
A cold front will push south into central Utah tonight then stall on Tuesday. An upper trof is over the nrn Rockies this morning with a couple of short waves lifting up the east side of it and one strong wave in the base of the trof moving over nrn CA. In addition, the upstream wave is now forecast to leave behind a weak trof over the wrn Great Basin that keeps a threat of convection going over the CWA into Thu. Winds will become gusty after 23-00z as the main cold front moves through. Warm with a drying today ahead of a cold front stalled across northern Utah, which will push into central Utah by tomorrow morning before stalling again and weakening.
Issued by National Weather Service STATE COLLEGE PA 828 AM EDT Mon Aug 14 2017 An upper level trough will swing through the region tonight into Tuesday. High pressure will briefly build southeast into the area for midweek. However, low pressure over the Great Lakes will likely track east across New York state by late in the week. As high pressure passes east of the area later today, a southerly low-level flow will develop and bring an expanding cumulus field into at least our Finger Lakes zones of CNY. This will also keep overnight lows a little warmer as they will be mostly in the upper 50s to low 60s.
Would expect this to be the case today across much of the area except in the higher terrain where heating and moisture will lead to scattered storms. An upper level trough will develop across the western U. Things begin to change midweek as the upper trough over the West lifts north.
/Issued 246 AM PDT Mon Aug 14 2017/ Weak low pressure will produce cooler temperatures Monday with a chance for showers and a few thunderstorms in northeast California and northwest Nevada.
900 AM PDT Mon Aug 14 2017 A trough of low pressure over the western states will bring cooler weather and a deep marine layer through Tuesday.
At the surface, southwesterly winds ahead of a developing low pressure system over CO/OK/KS will bring a warmer and more humid air mass into MO/IL today. H85 moisture convergence along the developing warm front may support SHRA/TSRA tonight, but precipitation is expected to remain north of the CWA based on the expected location of the front. This southwest flow will persist through the middle of the week, before yet another trough builds into the Northeast this weekend veering the upper- level pattern to the WNW. Tuesday will feature a weak surface warm front lifting northward through the area.
Left out the mention of showers/thunderstorms at our TAF sites this afternoon and tonight given the low rain chances. Scattered showers are occurring across mainly the eastern half of our area, with the higher coverage behind the outflow boundary.
Moisture transport vector forecasts show good moisture flux into northeast Kansas this evening then diminishing after 09Z as the low level jet weakens. The front in southern Nebraska is forecast to lift back northward after 06Z in response to the upper level trough moving into the Rockies and mid level ridge moving eastward across northeast Kansas. By Tuesday, a weak mid-level ridge will be shifting east of the area as a mid-level trough deepens over the Pacific Northwest. Models continue to be in good agreement in having this trough deepen southeastward across the Rockies through Tuesday night before the base of the trough pivots northeastward into the north central U.
An upper trough will bring seasonable temperatures to northwest California today and Tuesday.
1127 AM EDT Mon Aug 14 2017 One more day of fair weather is expected in our area today as high pressure moves slowly east from the Great Lakes. Low pressure over southern Minnesota this morning will move east across southern Michigan on Tuesday with a trailing frontal boundary dropping south into Indiana and Ohio, possibly causing a few showers or thunderstorms.
A trough of low pressure moving across northern California today will result in widespread cooling, as well as patchy morning drizzle. A gradual warming trend is then forecast from Tuesday through the end of the week as a ridge of high pressure over the eastern Pacific builds over California.
1007 AM EDT Mon Aug 14 2017 The area will remain situated between an inland trough and Atlantic high pressure through the week. Highs will warm into the lower 90s with dewpoints in the mid- upper 70s. Similar to the past few days, expect dewpoints to pool to 80-81 degrees for several hours along the sea breeze circulation, especially along the lower South Carolina coast.
A weak ridge of high pressure will move over the state Tuesday morning and early afternoon, accompanied by mainly dry conditions. Another surface and upper trough will move quickly to the east across the Great Lakes region and bring some isolated showers and thunderstorms, mainly across the northern mountains Tuesday afternoon.
Widespread gusty southwest winds will develop today as an area of low pressure drops down from the Pacific Northwest.
Otherwise, similar to slightly warmer highs are expected today in the 80s to lower 90s, warmest in extreme southwest NEB.
949 AM CDT Mon Aug 14 2017 A warm front lifting north from southern IL may bring a few showers as far north Effingham to Robinson this morning. Upper level ridge currently just east of the Rockies will edge eastward through mid week.
701 AM EDT Mon Aug 14 2017 Weak high pressure is forecast to keep mainly dry weather over the region today through Tuesday.
An upper level trough will be over the area through tonight. High temperatures will be in the lower to mid 80s lower elevations with 60s/70s in the mountains.
1007 AM EDT Mon Aug 14 2017 High pressure will move off the New England coast today allowing a warmer and more humid flow of air to return to the region that will last through Tuesday.
632 AM CDT Mon Aug 14 2017 An area of low clouds/fog has expanded out from behind the slow moving low pressure system that has now migrated into Minnesota. Today we will see a low amplitude ridge build across the northern plains, with the ridge axis west river this morning, moving across the CWA today into Minnesota tonight. Isentropic upglide develops in the wake of ridge axis passage, but we retain a dry east/northeast low level regime, and NAM/GFS BUFKIT soundings support this will lead to mainly mid/high clouds and not result in any precipitation today. Southwest flow aloft becomes more established for Tuesday, with a plume of higher dewpoint air into south central South Dakota, with a low tracking towards the northeast CWA with a well defined warm front between highway 212/interstate 90.
In the low to mid levels of the atmosphere, an Atlantic ridge of high pressure will extend across South Florida this afternoon. In the upper levels of the atmosphere, an area of low pressure will be centered near the Yucatan Peninsula today.
An upper level short wave with a closed mid level circulation, will cross Minnesota this morning, and then into northwest Wisconsin this afternoon as the mid level circulation opens into a trof. Elsewhere, upper level and surface ridging are arriving from the west with a clearing sky. As the high settles overhead late tonight, expect fog to develop and affect much of the region and linger until 14Z/9am Tuesday. A dry day is expected Tuesday as the ridging remains over the area. The models are trying to flatten the upper ridge in the afternoon with an approaching short wave trof.
Model soundings hint that stratus that will transition to cumulus across the north may keep temperatures slightly cooler north of I-90.
Have thus restructured some minimal POPs over northern, and ridge zones for that scenario as per favorable afternoon timing.
Chattanooga Airport, TN 87 72 86 74 / 60 50 30 20 Knoxville McGhee Tyson Airport, TN 85 71 86 72 / 60 50 30 20 Oak Ridge, TN 84 71 86 72 / 60 50 30 20 Tri Cities Airport, TN 84 69 84 69 / 60 60 40 20.
Have kept the higher chances near the boundary in south central Nebraska during the evening. Global models are in fairly good agreement at the start of the extended periods bringing a broad trough of low pressure across the intermountain west and into the plains by mid week.
932 AM EDT Mon Aug 14 2017 High pressure will slide south of the region today into tonight. A cold front will approach on Tuesday and cross the area Tuesday night.
1018 AM EDT Mon Aug 14 2017 Relatively weak ridging is in place aloft with water vapor imagery also showing an area of dry air over most of the Florida peninsula. The overall flow with this setup is southwest in the lower levels becoming more eastward aloft. Thus, the highest PoPs will shift to inland areas as most convection should be well east of the coast this afternoon and evening. High pressure over the region for the next several days will keep winds and seas below headlines.
1200 PM EDT Mon Aug 14 2017 A series of weak low pressure systems will track along a stationary located near the Virginia North Carolina border through Tuesday night.
Issued by National Weather Service STATE COLLEGE PA 1005 AM EDT Mon Aug 14 2017 An upper level trough will swing through the region tonight into Tuesday. High pressure will briefly build southeast into the area for midweek. However, low pressure over the Great Lakes will likely track east across New York state by late in the week. CAMS POPS are on the high side of non-convective allowing guidance and forecast is about 60 percent of the CAMS POPS. But the warmer moist air implies increased chance of showers and thunderstorms Tuesday afternoon and into Tuesday evening.
927 AM EDT Mon Aug 14 2017 Quiet and mild weather is expected today with a cold front expected to approach Tuesday with showers and thunderstorms possible during the afternoon.
Better chances for deep moist convection should arrive on Wed when a more robust mid/upper trough emerges from the central Rockies.
Weak high pressure will stay over the mid- Atlantic through midweek. Highs this afternoon will be in the lower 80s. Lows mainly in the upper 60s, except warmer in the cities/along the Bay. Highs in the lower to mid 80s.
Sfc analysis shows ridge axis across south FL with a westerly flow across EC FL.
605 AM CDT Mon Aug 14 2017 A relatively slow moving upper trough will swing across the area today into tonight. Ahead of the cold front MLCAPEs of around 500-750 J/kg may build this afternoon, especially over northeast Iowa into southwest Wisconsin. Weak high pressure beneath transient mid-level ridging should result in a mainly dry weather later tonight and Tuesday. Another upper level trough will begin ejecting across the central plains by Tuesday night. Strong moisture transport will occur ahead of the associated frontal cyclone with precipitable water values to 1.
An area of low clouds/fog has expanded out from behind the slow moving low pressure system that has now migrated into Minnesota. Today we will see a low amplitude ridge build across the northern plains, with the ridge axis west river this morning, moving across the CWA today into Minnesota tonight. Isentropic upglide develops in the wake of ridge axis passage, but we retain a dry east/northeast low level regime, and NAM/GFS BUFKIT soundings support this will lead to mainly mid/high clouds and not result in any precipitation today. Southwest flow aloft becomes more established for Tuesday, with a plume of higher dewpoint air into south central South Dakota, with a low tracking towards the northeast CWA with a well defined warm front between highway 212/interstate 90.
The low ST is expected to spread far enough east to impact KAMA within the next hour or so. Isolated to scattered thunderstorms will try to move off the higher terrain of CO/NM this evening.
Some fog and low clouds will persist through the early morning hours but weak high pressure will build in this afternoon. As winds become more southerly expect warmer temperatures this afternoon rebounding back into the lower to middle 80s with a rather "muggy" feel for the day.
Temperatures will be mainly near to a little above normal, though there will probably be a day or two with slightly cooler temperatures. 5 inch range, with surface dew points in the lower 60sF.
1021 AM EDT Mon Aug 14 2017 Weak high pressure is forecast to keep mainly dry weather over the region today through Tuesday.
917 AM EDT Mon Aug 14 2017 High pressure will remain across the Great Lakes and Ohio valley region today and tonight.
Issued by National Weather Service STATE COLLEGE PA 1028 AM EDT Mon Aug 14 2017 An upper level trough will swing through the region tonight into Tuesday. High pressure will briefly build southeast into the area for midweek. However, low pressure over the Great Lakes will likely track east across New York state by late in the week. CAMS POPS are on the high side of non-convective allowing guidance and forecast is about 60 percent of the CAMS POPS. But the warmer moist air implies increased chance of showers and thunderstorms Tuesday afternoon and into Tuesday evening.
Downstream of this system, scattered storms developed along an elevated warm front across southern AR, and in a less organized fashion, into northwest MS.
1231 PM EDT Mon Aug 14 2017 The area will remain situated between an inland trough and Atlantic high pressure through the week. Highs in the lower 90s still look on track.
748 AM EDT Mon Aug 14 2017 Aviation Chances for a few showers and storms will occur today through Tuesday as a weak low pressure system approaches and moves through the region.
By Tuesday the long wave trough is from Saskatchewan to the western Dakotas with a parade of short waves keeping rain chances going.
Weak high pressure will stay over the mid-Atlantic through midweek. Surface analysis shows high pressure centered over PA while a frontal boundary has become stationary over the Carolinas. That said - the best chances of precipitation in the LWX forecast area will be in central VA/the Highlands. Highs today will be in the lower 80s. Lows mainly in the upper 60s, except warmer in the cities/along the Bay. Highs in the lower to mid 80s.
823 AM EDT Mon Aug 14 2017 A high pressure ridge will be South of the region Today, leading to a Southwesterly flow.
Showers are continuing this morning along a cold front positioned across southern Idaho and far southeast Oregon. A slight chance of thunderstorms this afternoon over the higher terrain along NV border and Owyhees.
The lack of mid-level support for convection is directly related to a ridge of high pressure parked over the area. This ridging is easily identified by the very light and variable winds located above 700mb.
Temperatures will reach into the mid 90s across much of the interior with some of the high temperatures pushing into the inland suburbs of both coastal metropolitan areas.
723 AM EDT Mon Aug 14 2017 Weak high pressure will exist across the North Country today with no precipitation expected. Eventually deeper moisture will move into the region tonight and especially on Tuesday as a trough of low pressure drops down from Canada.
/26/ Prior discussion below: Today through tonight: Broad mid-level troughing continues over the ArkLaMiss, along with a weak frontal boundary that extends across the northern portion of the area. This boundary will continue to be the focus of the bulk of thunderstorm development today, generally along the Highway 82 corridor. High temperatures will range from the mid 80s in the north to the low 90s in south this afternoon.
Thunder potential still looks low due to the cooler temps. GFS and ECMWF are advancing the notion of an upper trough over the West, which may trigger showers/thunderstorms. Humidities will remain elevated today with cooler than normal temperatures. Drier and warmer conditions are expected on Tuesday though a few showers and thunderstorms will be possible mainly along the WY border and Divide.
An MCS developed over the high Plains and eventually merged with other convection lifting north from the TX South Plains.
Rest of the forecast still looking on track, with more clouds across the southern half of the FA through the day and cooler temps. It looks like today will be warmer with more sun across the north. Wind speeds will stay on the lower end today into tonight.
Cooler and continued dry conditions are expected for the weekend.
Temps are on track to reach the lower 80s for most locations, with muggy dew points around 70, light winds, and mostly cloudy to overcast skies.
1026 AM EDT Thu Mar 22 2018 High pressure in place across the region as dry air continues to filter in from the north. Temperatures today will be in the 70s with a cooler night tonight across South Florida.
As the upper level amplified trough approaches today, temperatures should be considerably warmer than yesterday. A significant inversion in the lowest levels with a pronounced dry layer lends more to drizzle. It looks clearly warm enough to not have to worry about freezing drizzle. VFR conditions are expected as an upper level ridge approaches and subsidence behind a weak mid-level perturbation will occur today.
Temperatures with light winds and weak high pressure have fallen mostly into the 20s with isolated upper teens noted.
1201 PM EDT Thu Mar 22 2018 Building high pressure should maintain mainly dry weather through Friday.