Aikyam-Lab/Synoptic-Bench huggingface dataset:
1244 PM EDT Mon Jul 24 2017 A frontal boundary and low pressure moving along it will remain over our area this morning, but then move offshore later this afternoon. High pressure is forecast to build down from the northwest for the middle part of the week.
The weak troughiness aloft has pushed east of the area and is aiding the convection over the gulf stream. While the current convective cluster may weaken, outflow should get additional storms to fire given the higher moisture and sfc heating occurring across the northern sections. RAP analysis shows low-level Atlantic ridge axis draped roughly across Lake Okeechobee.
712 AM EDT Mon Jul 24 2017 A slow-moving cold front will drift southward over the Mid Atlantic Monday.
Scattered to numerous storms this afternoon with the highest chances mainly west and north of the TAF sites.
High pressure arriving tonight leading to light and variable winds and mostly clear skies right into tomorrow. Upper low spinning near Georgian Bay will open as it drops southeast through Ontario today. Cool flow off Lake Huron will supplement low- level moisture lingering behind a cold front, while dry air remains in place in the mid-levels. High pressure will expand into the area tonight and last through late Tuesday, bringing dry and quiet weather. This will ultimately drive a cold front and an area of low pressure across the region, with models still struggling to resolve placement of the low track and timing of the front.
1111 AM EDT Mon Jul 24 2017 Mean layer ridging centered near Bermuda stretches west across the Bahamas, the Straits of Florida, and the southern Gulf of Mexico. Skies are partly cloudy and temperatures are in the mid to upper 80s, on their way to the lower 90s. A weak low level trough stretches southwest from near Rebecca Shoal to extreme western Cuba. Convergence along the northeastern flank of this trough has supported scattered showers and thunderstorms between the middle and upper Florida Keys.
705 AM EDT Mon Jul 24 2017 A Piedmont trough will extend from Virginia into South Carolina through Tuesday.
1202 PM EDT Mon Jul 24 2017 An upper trough, located over the Great Lakes early this morning, will push slowly across Pennsylvania early this week. In its wake, high pressure will build southeast across the region by midweek.
1109 AM EDT Mon Jul 24 2017 An upper level trough will remain over the eastern US. High temperatures this afternoon will be in the low 90s with lows tonight in the low to mid 70s. The synoptic pattern holds an upper level trough over the eastern part of the nation with a ridge in the west. An upper level trough will cross the northeastern states through Tuesday.
858 AM EDT Mon Jul 24 2017 A stagnant mid-level trough will keep very-humid conditions over the region today with a continued threat for showers and thunderstorms.
Cooler today and tomorrow with near normal temperatures, then warming remainder of the week. 580 DM upper low centered about 110 NM west of KUKI will be main weather feature for Interior NorCal over the next 48 hours. Marine layer has deepened in response to the low and is currently around 1900 ft thick at Fort Ord. Moderate flow through the Delta this morning is advecting some cooler marine air into portions of the Central Valley. Best potential for deep moist convection looks to be over the higher elevations of the Coastal range, Shasta, Western Plumas, and Sierra Nevada in the afternoon/early evening.
VFR to MVFR conditions are expected to prevail for much of the valid period with scattered showers and a few thunderstorms affecting the TAF sites into the early morning hours Monday with a cold front moving through the area late in the period.
130 PM MST Sun Mar 4 2018 20z surface analysis had low over northeast CO with cold front northeast into central SD, where another weak low was located. Nice day over the higher elevations of the Black Hills. Water vapour had upper low moving into south central MT - the first wave.
Of course a few more isolated thunderstorms may develop as the surface warm front is now lifting in early too with low 60 dew points from Tyler to Lufkin and Nacogdoches. The frontal timing will tap heating tomorrow with warmer temperatures streaming in behind the warm front. The remainder of the work week will see high pressure of around 1020mbs build in behind the front.
432 PM EST Sun Mar 4 2018 High pressure will continue to slowly build east into Pennsylvania today and Monday bringing dry weather.
212 PM MST Sun Mar 4 2018 The cooler conditions will not last long as a warming trend will prevail through much of the week as high pressure builds across the intermountain West. A fast moving positively tilted trough continues to track eastward into the Central Rockies today while cooler air has temporarily settled into the Desert Southwest. For a change, a deep upper low is forecast to dig southward across the eastern Pacific early this week.
/Issued 1130 AM CST Sun Mar 4 2018/ Monroe is currently at forecasted high and so we have added some good breathing room for the afternoon hours into the lower 70s. Overall trends show most of the rain areas oriented NW to SE from NE TX into SW MS and points North along an upper level ridge axis moving E.
105 PM PST Sun Mar 4 2018 Dry and warmer conditions will kick off the work week.
300 PM EST Sun Mar 4 2018 High pressure will extend over the region through Monday night.
No other significant radar echoes currently evident in our CWA, but scattered snow showers will develop in the afternoon in the Idaho Mountains as upper low passes through. Moisture from the departing trough will leave a few showers over the central Idaho mountains today, with activity also possible across the Southwest Highlands and into Twin Falls county.
414 PM EST Sun Mar 4 2018 High pressure will remain in control of the region through tonight. Winds will become more easterly overnight as the center of high pressure begins to shift east of the region with the southerly axis across the state. These east winds will continue through much of the day tomorrow with similar afternoon temperatures to that of today, in the high upper 40s in the north to mid and upper 50s in the south. A secondary low will have developed on the southward extent of the occluded front, and will be located over the mid Mississippi Valley by 21Z Monday, with a warm front extending SE into portions of KY, and a cold front oriented just along the Mississippi River.
Minor tweak to the PoP forecast this morning to account for trends in short term guidance which is hinting at the chance for showers mainly west of I-10 this afternoon, where the dew points are the highest. /ISSUED 435 AM CST Sun Mar 4 2018/ Onshore flow this morning in response to lowering pressures over Colorado and extensive ridging from eastern Canada down through Louisiana.
/Issued 636 AM EST Sun Mar 4 2018/ Early morning obs trends still look like the main area for below freezing will be confined to the far northeast, though some other spotty locations could radiate down for an hour or two near sunrise - just not widespread enough for justifying a warning. Majority of fcst period dominated by upper ridging and very dry thermal column. Monday morning should be slightly warmer than this morning so again not planning on any freeze products.
Areas of freezing fog are possible early Monday morning.
1157 AM CST Sun Mar 4 2018 Sunny skies prevail across central Illinois this morning, with 16z/10am temperatures in the lower to middle 40s. Am therefore expecting mostly sunny skies to continue for the balance of the day with afternoon highs topping out in the lower to middle 50s. High pressure will continue to dominate the weather over central IL through most of the day Sunday bringing clear skies.
The front will knock temperatures down close to average, or about 15 to 20 degree cooler than today.
Ridging surface and aloft will remain across the tonight. Clear sky and calm wind will produce good radiational cooling conditions so went on the colder side of guidance with freezing temperatures expected most locations, except for the far southeast Tennessee. Surface ridging will move east of the Appalachians Monday with return flow beginning to pull moisture back north into the Plateau and southeast Tennessee during the afternoon. Increasing high and mid-level moisture anticipated area-wide Monday as upper ridge axis moves toward the area.
However, KBYX Doppler VWP shows that the lowest winds are moderating presently, and will continue to do so at the surfaced-based sensors through the afternoon.
105 PM EST Sun Mar 4 2018 High pressure will extend from the Great Lakes southward into the region through Monday night.
As the lower levels moisten, the showers will increase in areal coverage. Drier and cooler air wl filter into the region later Mon/Mon ngt.
Drier and warmer temperatures are expected Tues and Wed with rain returning Wed night. Dry weather and seasonal temperatures is expected Tues and Wed as a weak ridge of high pressure moves into the region.
As the afore-mentioned cyclone continues to strengthen as it lifts E/NE across Nebraska & the Dakotas, the attendant cold front, that will surge across most of KS late tonight, would cross the KS/MO border Mon morning. With the vicious surface cyclone occluding as it lifts almost due north, the NW winds that'll spread across KS will be strong enough for winds to easily reach advisory criteria. On Tue, the intense upper-deck cyclone will be driven SE across the Mid-MS Valley Tue afternoon. This would likewise drive the surface cyclone SE across MO. Wed-Fri: The remainder of the work-week will be quiet as broad ridging spreads across the Plains. Improving conditions to VFR most areas is expected late tonight with the passage of the surface dry-line/cold front.
Satellite imagery shows the upper low moving into Montana with subsidence increasing across this area which will result in diminishing snow across the area. Temperatures lapse rates in the low levels were quite steep and some models continue to struggle with producing convection, which so far has been marginally successful.
359 PM EST Sun Mar 4 2018 High pressure will continue to slowly build east into Pennsylvania today and Monday bringing dry weather.
A cold front crossing northern Arizona will bring southwest wind gusts from 40 to 55 mph to portions of eastern Arizona through sunset.
1132 AM CST Sun Mar 4 2018 Mid level ridging that has kept the dry weather over the area will slide to the east today as a rather vigorous mid level trough rotates out into the Plains. The closed mid level low slowly drifts into Iowa on Monday, with its associated cold front pushing through southern Missouri.
255 PM EST Sun Mar 4 2018 Another gorgeous early Spring day underway across the lower Ohio Valley. GOES-16 reveals hardly any clouds in the sky, and a strong +1044mb high pressure over northern Canada continues to hold influence over the eastern 1/3 of the country. Clouds will begin increasing tonight as a cold front begins to approach from the west, though we'll remain through the overnight hours.
227 PM CST Sun Mar 4 2018 Surface analysis and visible satellite imagery continued to indicate a weakening ridge shifting E of the TN Valley region this aftn, with a disturbance approaching the area from the W/SW.
1221 PM EST Sun Mar 4 2018 High pressure through Monday. Warm front Monday night.
Winds will become a bit gusty out of the southwest/south with veering toward west this evening then northwest/north behind a cold front around sunrise Monday. The potent negatively tilted trough (one of two lobes in the larger scale system) will translate across Nebraska today into Monday.
830 AM PST Sun Mar 4 2018 Drying and a little warmer for today.
238 PM MST Sun Mar 4 2018 Surface observations as of 2pm Sunday afternoon indicate that the cold front has passed through all but the far southern reaches of the forecast area in Pagosa Springs. While radar echos do still indicate precipitation near and west of Grand Junction, dry air has already moved in bringing an end to the snow in all but the higher elevations. A blend of the lowest available MOS guidance was weighted heavily. Despite the rapid exit of our cold front tonight, some light snow showers will linger in the northern mountains on Monday as a separate weak plume of moisture from the Pacific hangs over the Wyoming border.
North to northeast winds of 10kts at TYS and CHA this afternoon, otherwise surface ridging across the southern Appalachians will keep winds light/calm tonight and Monday morning. Chattanooga Airport, TN 63 37 58 46 / 0 0 30 80 Knoxville McGhee Tyson Airport, TN 59 34 57 45 / 0 0 20 80 Oak Ridge, TN 59 34 57 44 / 0 0 20 70 Tri Cities Airport, TN 56 27 58 40 / 0 0 10 70.
A cold front crossing northern Arizona today will bring southwest wind gusts from 40 to 55 mph to areas along and north of the Mogollon Rim. There are also chances for rain and snow showers across the high terrain north of Interstate 40 mainly through the morning hours.
Expect some showers to affect the northwest portion of the forecast area Monday afternoon as warm front moves northward across Louisiana.
Advisory levels winds still expected for the lower snake Plain and Eastern Magic Valley this afternoon, but for a shorter time period 2 to 7 pm and less area covered, Minidoka to Pocatello and Blackfoot.
102 PM EST Sun Mar 4 2018 Upper air pattern consists of a 500 mb trough on the west coast, a closed low near James Bay and a closed low and trough off the east coast of the U. with a broad 500 mb ridge across the central U. The trough in the western U. moves into the central and northern plains by Mon morning while the ridge remains stationary and troughing remains on the east coast. 00Z soundings from KMPX, KGRB and KINL tell the story for this forecast as the low levels are extremely dry.
A broad upper level trough is present over the western U. with two main low pressure centers pivoting around each other. The upper low over southwest Oregon yesterday has weakened and moved south and out of the region. The forecast area will be between the two upper lows with lingering instability showers. The forecast was updated to decrease cloud cover in many zones this morning and remove the patchy freezing fog in Central Oregon. Temperatures this afternoon will be about 1-3 degrees higher than yesterday with highs in the 30s over the mountains and 40s to around 50 in the lower elevations.
1244 PM EST Sun Mar 4 2018 High pressure will continue to slowly build east into Pennsylvania today and Monday bringing dry weather.
132 PM EST Sun Mar 4 2018 High pressure will extend over the region through Monday night.
The rest of the High Wind Warning and Wind Advisory remain in effect until 05/01Z and 05/04Z, respectively.
1207 PM EST Sun Mar 4 2018 High pressure will ensure dry and seasonably cool conditions through Monday. High pressure will maintain dry weather today, with plenty of sunshine and seasonal temperatures. High pressure will slide eastward through the area on Monday, perhaps a few more clouds, particularly north and east, but the region will remain dry.
345 PM EST Sun Mar 4 2018 A large area of high pressure will continue to dominate the weather across South Florida for tonight and Monday.
217 PM EST Sun Mar 4 2018 High pressure will continue to slowly build east into Pennsylvania today and Monday bringing dry weather.
300 PM CST Sun Mar 4 2018 Satellite imagery this afternoon shows an amplified pattern in place across the Nation, with a West Coast trough starting to translate east, impinging on the upper level ridge across the Plains States.
Dry conditions under generally clear skies will prevail through tonight as deep layer ridging remains in place across the Southeast.
1230 PM EST Sun Mar 4 2018 A ridge will be along the East Coast today and Monday promoting dry weather.
230 PM EST Sun Mar 4 2018 High pressure through Monday. Warm front Monday night.
1050 AM CST Sun Mar 4 2018 Sunny skies prevail across central Illinois this morning, with 16z/10am temperatures in the lower to middle 40s. Am therefore expecting mostly sunny skies to continue for the balance of the day with afternoon highs topping out in the lower to middle 50s. High pressure will continue to dominate the weather over central IL through most of the day Sunday bringing clear skies.
Tonight a weak cold front in the mid and upper levels of the atmosphere, with little if any distinguishing features at the ground, will move over the area and carry those showers through north central Idaho and northwestern Montana.
The pattern will be relatively quiet today and tonight with occasional light snow showers or flurries possible as a weak upper level trough tracks se from James Bay to just off the mid Atlantic coast. The low levels will remain moist, along with a north wind, which will allow the low clouds to persist across much of the region. Temperatures will only top out in the lower to mid 30s. Lows tonight will likely drop into the lower to mid 20s under mostly cloudy skies. A dry morning with high pressure moving east out of the area. Then the start of a long period of unsettled weather with a large upper level trough setting into the northeast US.
1240 PM EST Sun Mar 4 2018 High pressure will slowly move east across the region through Monday.
Another Cold Front. Although another cold front will bring north winds to West Central Texas tomorrow, temperatures will remain above seasonal normals. Tomorrow, another cold front will bring gusty winds from the north, along with much drier air; nevertheless, this front will have either limited or no impact on highs tomorrow. Yes, some of our locations north of Interstate 20 could have slightly cooler highs than today, perhaps in the 65 to 70 range.
Precipitation chances will end from west to east overnight as a cold front moves through. In contrast to the unseasonable dewpoints in our area today, moisture has been very low on the high plains today.
757 PM EDT Fri Jul 14 2017 One last band of showers and storms in the humid airmass expected ahead of a cold front passing tonight. High pressure will build in for a drier weekend.
1151 PM CDT Fri Jul 14 2017 Upper flow continues to steer the storms along the Lower Sabine river area south and southwest and western end could bring a few showers nearby UTS with the stronger storms aimed more towards High Island/BPT area.
618 PM CDT Fri Jul 14 2017 High pressure over Minnesota will drop southeast into Illinois over the next 24 hours. Drier air is filtering south out of the high this afternoon. but dewpoints remain in the low to mid 70s along and south of the I-70 corridor this afternoon. Sky should clear out over most of the area tonight and with drier air pushing in the temperatures should drop into the low to mid 60s over much of the area. Saturday still looks dry and seasonably warm under the influence of high pressure with highs mainly in the mid 80s with low humidity and light northeast flow.
The cold front was located over southern MO and was developing isolated convection. Forecast will keep some convection chances over the state tonight, as well as some patchy fog will be added due to moisture in the lowest levels.
1216 AM EDT Sat Jul 15 2017 An upper level trough of low pressure over the Great Lakes will move east tonight and across northern New England Saturday, while weak low pressure passes to our south. Scattered showers and widely scattered thunderstorms will occur along and in advance of this trough overnight and Saturday.
826 PM EDT Fri Jul 14 2017 Cold front will complete it's passage tonight. Surface cold front, marked in observations by a slight wind shift and decrease of dewpoints into the low to mid 60's, will continue to slide southeastward tonight.
823 PM EDT Fri Jul 14 2017 A cold front will move south through the region today, with rain chances coming to an end. Slightly cooler and drier conditions are expected for the weekend, as high pressure moves into the area. Temperatures are running on and should drop to the lower 60s across most of the the region tonight, mid 60s along the Ohio River and in northern Kentucky.
1209 AM EDT Sat Jul 15 2017 High pressure will move east of the region tonight. Low pressure will approach from the western Great Lakes region Saturday, but weaken and dissipate before it reaches Maine.
A much needed break from the storms and heavy rain has arrived as high pressure builds into the area for much of the weekend.
A weak inverted trough continues to move westward across the northern Gulf, contributing to the development of scattered to numerous showers and thunderstorms. An upper trof digs across the eastern states on Saturday with an associated frontal boundary moving into the southeastern states. This trough combined with daytime heating and the seabreeze will lead to another round of scattered showers and thunderstorms on Saturday. Lows tonight drop into the low/mid 70s inland to upper 70s along the coast.
High pressure will build across the region for the weekend bringing hot temperatures. The ridge will amplify over the weekend, leading to even hotter temperatures in most locations. Convective activity should be even less than the last couple of days, but enough moisture will continue to linger under the ridge that at least some afternoon development on the higher terrain is expected.
652 PM CDT Fri Jul 14 2017 Cold front has pushed south of our far southeast CWA this afternoon. This drier air will overspread the forecast area tonight, as high pressure in Minnesota settles southeast into central Illinois by early Saturday morning. The first half of the weekend looks quite nice as a result, with highs on Saturday in the lower 80s after starting off in the upper 50s in some areas. The upper ridge currently over the Rockies will edge eastward and flatten a bit, allowing the center of a 594 dm high pressure to push into the mid-Mississippi valley.
720 PM CDT Fri Jul 14 2017 For the ArkLaTex, a prefrontal convective push from the North today with weak high pressure is building down the MS valley. /issued 444 PM CDT Fri Jul 14 2017/ This afternoon showers and thunderstorms continued to develop and spread South across Southeast Oklahoma and Southwest and South Central Arkansas along and ahead of an outflow boundary that rounded the Northeast periphery of the upper level ridge of high pressure over the Southern Plains. trough of low pressure. As the ridge becomes more established across the Rockies and out across the Plains through the weekend a cold front associated with the Eastern trough will move into parts of South Arkansas and Eastern Oklahoma but become nearly stationary before an nudge South over the Eastern end, but the front will wash our over the Interstate 20 corridor.
733 PM EDT Fri Jul 14 2017 Scattered showers and thunderstorms associated with an upper level trough swinging through southern Ontario this afternoon will generally dissipate this evening with a mainly quiet night expected after sunset.
The marine layer will deepen on Saturday night due to the passage of an upper trough.
Castro 248 PM CDT No significant weather expected through the period, as high pressure pushes overhead tonight into Saturday.
1045 PM EDT Fri Jul 14 2017 Scattered showers and thunderstorms associated with an upper level trough swinging through southern Ontario this afternoon will generally dissipate this evening with a mainly quiet night expected after sunset.
The weak mid level trough that ignited convection before 00Z is just about at the US/Mex border as of 03Z and rapidly moving south, with only some light showers in its wake. Overall, the upper level pattern was defined by a large high pressure ridge over much of the western United States, with one 594 dm high center over northwest Arizona and another over the Texas Panhandle and an inverted trough sandwiched between these two features to our southeast over Chihuahua, Mexico.