Aikyam-Lab/Synoptic-Bench huggingface dataset:
708 AM EDT Sun Aug 13 2017 Gradual drying today, behind last night's cold frontal passage, will result in increasing sunshine by this afternoon. Monday, as aforementioned high pressure moves to the east coast, a southerly low-level flow will bring an expanding cumulus field into at least our Finger Lakes zones of CNY.
957 AM EDT Sun Aug 13 2017 High pressure into Monday. Overall area remains under high pressure today, so should be a rain-free and mostly sunny and warm day.
On Monday, a drying trend will end storm chances across the lower elevations with only limited chances remaining across the higher terrain.
/issued 403 AM CDT Sun Aug 13 2017/ SHORT TERM (Now through Monday): 500 mb high pressure over Deep South Texas and the Rio Grande Valley today and tonight will yield to a weak inverted 500 mb trough that will briefly develop over the western Gulf of Mexico on Monday.
Echoes have recently sprouted up from Fosston to Grand Forks to Michigan, so expanded the lower range pcpn chances further north to account for this. Monday should be mainly dry as weak 500mb ridging moves in behind the departing short wave. Therefore, once again temps will be warmer across the north.
1103 AM CDT Sun Aug 13 2017 High pressure still in place over Central Illinois today, and quiet and mild weather will prevail. Another quiet and pleasant day on tap, as high pressure slowly drifts east across the Midwest. Gradual air mass modification will take place this week as the upper level winds start to orient themselves more out of the southwest, and the upper trough over the Great Lakes tends to retreat a bit northward.
Radar indicating leading edge of precipitation will slide across the southwest Delta counties late this morning likely keeping temperatures cooler than forecast.
502 AM PDT Sun Aug 13 2017 New Aviation Discussion An upper trough to the north of the region will strengthen and move toward the region through Monday, bringing a cooling trend, with temperatures below normal by Monday. Below normal temperatures will continue across the area through mid week as the trough moves little.
High pressure responsible for the drier air will continue to influence our weather tonight and Monday with dry weather continuing. High temperatures today will be a few degrees cooler than yesterday. Upper trough continues to move quickly across southern Quebec Province this morning and is enhancing isolated to scattered showers across southern Quebec the northern tiers of New York and Vermont. This activity will continue moving eastward and with upper trough being fairly progressive. High pressure builds in tonight and persist over the area on Monday. Overall little change from previous forecast thinking for the period with high pressure largely dominating at the surface while a closed upper level low over James Bay Monday night slowly tracks southeastward to the Gulf of St.
A mostly dry cold front will move through the forecast area today and will result in temperatures trending about 5 degrees lower than yesterday. It will be the first day in quite a while with significant cloud cover from a cold front possible for much of the West Side, and it will be the coolest day overall in the past 3 weeks.
649 AM CDT Sun Aug 13 2017 A high pressure center over the Great Lakes will continue to influence weather conditions across the area today and tonight. Initially easterly winds will gradually veer and become southeasterly today as the high pressure center shifts eastward. The southerly component to the wind direction should help afternoon high temperatures rise a few degrees warmer than yesterday. The persistent trough that had been in place for the past couple of weeks over the northeastern CONUS will break down and be replaced by upper-level ridging.
820 AM PDT Sun Aug 13 2017 A developing trough of low pressure near the West Coast will bring stronger onshore flow at the surface and dry westerly winds aloft.
Drier and more stable southwest flow aloft will keep thunderstorm chances confined to northwest Arizona today then dry and a little cooler conditions can be expected during the coming week as a low pressure system moves over the western states. A dry air mass will continue to spread across the region as a trough over the Pacific Northwest digs and broadens across the western states.
920 AM MST Sun Aug 13 2017 While a more few showers and thunderstorms will be possible across central and eastern Arizona, a distinct drying trend will end storm chances across the lower elevations today.
745 AM EDT Sun Aug 13 2017 Aviation Quiet weather conditions are forecast today due to high pressure situated over the Great Lakes region.
Temperatures will be noticeably cooler today compared to yesterday. Meanwhile the associated low pressure system with this precipitation is forecast to race across Oregon tonight and take the moisture away from region by Monday. A weak ridge of high pressure will move into our area and provide dry conditions to start the work week with slightly below temperatures.
The low moves into Minnesota this evening ending the rain east. Weak H5 ridging moves in for a mainly clear sky tonight, but with high low level moisture in place fog will likely result, especially across the south. As the weak H5 ridge passes Monday southwest flow aloft becomes established, and with increasingly diffluent flow, upward motion results.
938 AM EDT Sun Aug 13 2017 High pressure builds in today and shifts offshore on Monday. Weak low pressure passes to the south Monday night.
High pressure responsible for the drier air will continue to influence our weather tonight and Monday with dry weather continuing. High temperatures today will be a few degrees cooler than yesterday. especially across the higher mountain towns. Previous discussion below: Upper trough continues to move quickly across southern Quebec Province this morning and is enhancing isolated to scattered showers across southern Quebec the northern tiers of New York and Vermont. This activity will continue moving eastward and with upper trough being fairly progressive. High pressure builds in tonight and persist over the area on Monday. Overall little change from previous forecast thinking for the period with high pressure largely dominating at the surface while a closed upper level low over James Bay Monday night slowly tracks southeastward to the Gulf of St.
1100 AM EDT Sun Aug 13 2017 High pressure builds in today and shifts offshore on Monday. Weak low pressure passes to the south Monday night.
High pressure remained across the area. Temperatures dropped into the low and mid 50s shortly before midnight as the cirrus moved in. This cirrus kept temperatures warmer across the western CWA this morning. The ECMWF seems to be the highest guidance for temps. Later in the period, the upper level low over ND this morning will move east to the north of the area. Advection of moisture into the area today and tonight will lead to warmer lows than the past few nights. A developing warm front over Iowa and Illinois will be in place Monday, with continued moisture transport into the region.
1012 AM EDT Sun Aug 13 2017 Weak high pressure will build over the area today and hold through mid week. High pressure center shifts east across the NY/PA border tonight through Monday.
Otherwise, building high pressure under weak upper troughing will suppress precip and support seasonable temperature for the near term period.
912 AM EDT Sun Aug 13 2017 Low pressure will drag a trailing cold front through New England this morning with drier air working in during the day.
1230 PM EDT Sun Aug 13 2017 High pressure builds in today and shifts offshore on Monday. Weak low pressure passes to the south Monday night.
A cold front is rapidly passing over the forecast area this morning and will be exiting into Idaho by this afternoon. Behind the front will be clearing skies, cooler temperatures and breezy westerly winds. Temperatures will be noticeably cooler today compared to yesterday. Meanwhile the associated low pressure system with this precipitation is forecast to race across Oregon tonight and take the moisture away from region by Monday. A weak ridge of high pressure will move into our area and provide dry conditions to start the work week with slightly below temperatures.
1159 AM EDT Sun Aug 13 2017 High pressure and an associated pool of dry air will drift east from the Midwestern states, and cross the commonwealth late today and tonight.
717 AM EDT Sun Aug 13 2017 High pressure builds in today and shifts offshore on Monday. Weak low pressure passes to the south Monday night.
424 AM PDT Sun Aug 13 2017 An upper trough to the north of the region will strengthen and move toward the region through Monday, bringing a cooling trend, with temperatures below normal by Monday. Below normal temperatures will continue across the area through mid week as the trough moves little.
Coverage will be very limited if it does develop due to the upper level high pressure area over the area. /ISSUED 351 AM CDT Sun Aug 13 2017/ A flattish upper level ridge persists across much of South Texas this morning with a weak short wave trough scooting east on the periphery of the ridge over extreme North Texas. The upper level ridge will bring more heat to the region and upper 90's are again expected. Will again have to monitor for a Heat Advisory but at this time, looks like heat index values will be a degree or two cooler than todays values.
It will be another warm day with highs in the low to mid 90s and heat indices around 105F.
1136 AM EDT Sun Aug 13 2017 Hydro Quiet weather conditions are forecast today due to high pressure situated over the Great Lakes region.
A few showers and storms will be possible later this morning into the afternoon but expect the bulk of the activity will be limited to the higher elevations of the Appalachians Mountains.
A strong upper trof will move into the Pac NW today. and an an associated cold front will move into the central mtns this aftn. Showers/tstms increase across the rest of the fcst area on Mon as the cold front advances. and a secondary upper trof moves thru. Precip tapers off Mon night as the upper trof moves east. Temps will be several degrees cooler on Mon.
Otherwise, with the light winds expected today under the influence of high pressure, expect a lake breeze to develop by late morning, and then shift inland across northeastern IL and northwestern Indiana during the afternoon.
1032 AM EDT Sun Aug 13 2017 High pressure will settle across the region today, lowering humidity and bringing increasing amounts of sunshine.
A mostly dry cold front is moving across the area, and has brought morning showers to the Coos coast and inland towards Coquille. A cold front this morning will bring mainly a mix of VFR/MVFR ceilings west of the Cascades and some light rain to the coast and Umpqua Basin. North winds will increase behind a cold front today.
A trough of low pressure moving across northern California on Monday will result in brief cooling early in the work week.
After this morning chance in SE KS, expect another dry forecast for the daytime hours and most of the evening hours, as instability and moisture transport will once again remain focused over the high plains. Latest GFS and NAM-WRF both suggest another impulse will move across the Rockies into the high plains late this evening, as convection develops over the high plains, with this convection developing into some sort of forward propagating complex of storms moving E-SE towards south central KS late tonight. Think some showers and storms may be around for the morning hours on Mon, but think most of the daytime hours will remain dry as a warmer elevated mixed layer increases over the area.
A convective complex that is forecast to initiate over the high Plains this afternoon and shift southeast overnight is expected to remain west of our area.
1050 AM EDT Sun Aug 13 2017 A cold front will stall across the southern counties of central NC today, and remain quasi-stationary through the middle of the week. Sfc cold front has progressed swd into the Sandhills and southern coastal plain of central NC, a little farther south than anticipated 24 hours ago.
545 AM MDT Sun Aug 13 2017 Upper trough over the Dakotas early this morning will shift slowly eastward this afternoon. It does appear that by mid to late afternoon, the low level flow will turn more easterly especially over southern parts of SE WY and this combined with the weak mid level impulse nearby will likely set off scattered thunderstorms once again.
1021 AM CDT Sun Aug 13 2017 High pressure over the Great Lakes will continue to influence weather conditions over the region today and tonight. Temperatures will be few degrees warmer today but still below climatological normals for August. Kelly A high pressure center over the Great Lakes will continue to influence weather conditions across the area today and tonight. Initially easterly winds will gradually veer and become southeasterly today as the high pressure center shifts eastward. The southerly component to the wind direction should help afternoon high temperatures rise a few degrees warmer than yesterday. The persistent trough that had been in place for the past couple of weeks over the northeastern CONUS will break down and be replaced by upper-level ridging.
614 AM MDT Sun Aug 13 2017 A short wave trough aloft sweeps through the region this afternoon and evening.
Some low cloud and patchy fog has spread out of southwest North Dakota into the lower Yellowstone valley early this morning, but currently struggling to cross the Big Sheep mountains. Once the fog and low clouds clear, the remainder of the day is expected to be sunny with upper ridge building eastward. Temperatures should warm several degrees over yesterday with thermal ridge spreading across central Montana. Clouds and potential rain along with proximity of upper trof will lower temperatures for Monday. By Monday evening, the first main passage of the low pressure trough from the Pacific Northwest will have just passed through most of our CWA.
By this evening, complex of storms will develop to our west across the high plains, then track southeast into western Oklahoma mainly after midnight. By Monday night, larger western trough begins to take shape, transitioning the plains back to a west/southwest mid-level flow. By mid-week, a trough will move through the northern Plains, which will push a surface front south toward the area.
713 AM EDT Sun Aug 13 2017 High pressure and an associated pool of deep dry air will drift east from the Midwestern states, and cross the commonwealth late today and tonight.
613 AM CDT Sun Aug 13 2017 High pressure over the southern Great Lakes continues to extend surface ridging over the region this morning which helped keep the MCS over Nebraska from entering our area. This high will shift south today weakening this ridge and allowing a more southerly flow to develop over the region.
Highs today are expected to range from the lower to mid 90s across the Big Country, where cloud cover will be a little more extensive, to the upper 90s across most of the southern two-thirds of our area.
Surface analysis shows low level ridge axis across south FL with light W/SW flow across central FL. Weak high pressure over south Florida will maintain a light to gentle southwest breeze through this morning before turning onshore as the sea breeze develops.
1239 PM EDT Sun Aug 13 2017 A cold front will cross the region today. High pressure will build in behind the front tonight through Monday. 1235 PM: Cold front continues to push across northern Maine at this hour. Weak high pressure will move across the region tonight with clearing skies. Temps wl climb abv normal into the lwr 80s for interior Downeast and u70s acrs the north with H8 temps warmer than Sun. Temps wl be a few degrees cooler than Mon due to cld cvr and showers expected. This is lkly due to EC weakening the ridge while GFS and CMC maintain it's strength. Cold front will approach Tue with showers and tstms possibly affecting terminals north of BGR with localized MVFR conditions.
An airport weather warning for the high winds may need to be issued for KABI sometime tomorrow afternoon.
Late this afternoon we downgraded the high wind warning to a wind advisory for south-central Idaho, valid until 9 PM MDT. Clearing and calming late tonight will allow temperatures to drop below freezing by morning in all areas. Today's upper trough will be in Colorado and Wyoming by morning as an upper ridge comes in from the Pacific.
710 PM EDT Thu Apr 12 2018 High pressure will extend over the area from offshore into the weekend with a cold front slowly approaching from the west.
So, went ahead and let the High Wind Warning expire on schedule at 6 PM for the Laramie Valley. Quite varied weather expected over the next 36 hours as an upper low deepens over Colorado overnight then moves out into the central plains Friday. A cold front is currently moving east across the CWA and nearing Laramie. Some indication of dry slotting over the plains overnight but then should see rain and snow build south later tonight as the surface and upper lows edge into the plains, continuing through Friday, all snow on Friday.
An upper trough will spark off severe storms across the plains and into Arkansas and western Tennessee Friday afternoon and evening.
A rain snow mix will be possible until Friday afternoon when cooler air settles in and turns to all snow. Temps in the 20s north and 30s south tonight will rise into the low to mid 30s for Friday as north winds develop and become breezy with gusts to near 40 mph in SE ND by Friday afternoon.
907 PM CDT Thu Apr 12 2018 Low pressure over the Plains and high pressure over the southeast U.
The trough axis is shifting eastward over the Eastern Highlands and snow has almost stopped overt the Central Mountains. By Sat, an upper level ridge will be in, with very little cloud, strong warming, and an end to northwest flow, so temperatures spike up.
736 PM EDT Thu Apr 12 2018 As low pressure exits the Great Lakes region this evening, a trailing boundary will stretch across the southern Great Lakes tonight and Friday.
647 PM CDT Thu Apr 12 2018 For tonight, we remain north of the warm front for much of the CWA, save for north central Kansas, and therefore most of the wind tonight will be east and changing to north behind the low as it tracks east. Some showers may occur in our north in the post-cold front regime.
657 PM CDT Thu Apr 12 2018 High pressure over the southeast US continues to push away from the area this afternoon and evening. At the surface, our region is in the warm sector with a quasi stationary SW-NE oriented warm front northwest Missouri and southeast Iowa.
1230 AM EDT Fri Apr 13 2018 Low pressure will track eastward from the Great Lakes region overnight. A cold front from northern Canada will approach Friday and cross the region Friday night. Low pressure will track out of Quebec into northern Maine tonight. This track will be conducive to snow north of the low. In general, most of the lower elevations under 1000ft will see one to two inches and a lot of that will come within a couple of hours when snowfall rates could hit an inch an hour. In general, the air behind the low will be milder and moister with highs tomorrow another couple of degrees warmer than today.
A cold front will move across the region tonight, shifting winds to northwesterly into Friday. This will usher in cooler temperatures.
Surface gusty winds are helping bring in the warmer air as well, but the subsident air under the ridging is keeping us relatively dry for now.
There will be some brief clearing as the cumulus dissipates then we will have increasing mid and high level clouds overnight associated with the offshore warm front. The warm front will move across the region Friday with cloudy skies.
1038 PM EDT Thu Apr 12 2018 As low pressure exits the Great Lakes region this evening, a trailing boundary will stretch across the southern Great Lakes tonight and Friday.
/Issued 310 PM CDT Thu Apr 12 2018/ Gusty south winds continue this afternoon as the Lee surface cyclone continues to deepen.
1042 PM MDT Thu Apr 12 2018 Another update here this evening, to cancel the High Wind Warning that was in effect for the southern Laramie Range & I-25 corridor this evening. Winds have weakened this evening, thus no longer warranting the High Wind Warning. So, went ahead and let the High Wind Warning expire on schedule at 6 PM for the Laramie Valley. Quite varied weather expected over the next 36 hours as an upper low deepens over Colorado overnight then moves out into the central plains Friday. A cold front is currently moving east across the CWA and nearing Laramie. Some indication of dry slotting over the plains overnight but then should see rain and snow build south later tonight as the surface and upper lows edge into the plains, continuing through Friday, all snow on Friday.
Under mostly cloudy skies, temperatures range from the 30s across northwestern SD to the lower 60s across far southern SD. Precipitation will expand over the area tonight, as the upper low approaches the region. Then as cold air wraps in around the low, rain will change to snow from northwest to southeast. Snow and winds will begin to diminish from northwest to southeast Friday night as the low shifts eastward.
819 PM EDT Thu Apr 12 2018 As low pressure exits the Great Lakes region this evening, a trailing boundary will stretch across the southern Great Lakes tonight and Friday.
A storm system moving north of the area through Friday will bring strong gusty winds and cooler temperatures.
716 PM EDT Thu Apr 12 2018 High pressure over the Southeastern United states will keep the weather mostly dry over South Florida tonight.
High pressure briefly returns for the end of the week with dry conditions and a warming trend.
With near freezing surface temperatures and strong easterly winds, compaction of snowfall will likely play a significant role impacting snow ratios. Looks like there will be a potential for freezing rain/drizzle across the south central, east of the Missouri River Valley late tonight and Friday as there appears to be a lack of ice crystals in the soundings across this area.
A cloud line earlier this afternoon was able to bring a brief period of light rain to the lower Keys, but has since diminished with the loss of daylight.
Potential vorticity is helping to spin up the low today over south-central Montana. On Friday, any precipitation will quickly end as the secondary low strengthens and an upper ridge over the Pacific Northwest begins to move in. But more noticeable will be the cold thanks to surface arctic high pressure over northern Sask/Manitoba. The upper ridge will remain in place through the weekend with temperatures rising and conditions generally dry.
808 PM EDT Thu Apr 12 2018 Aviation A weak low pressure system and warm front will bring showers and possibly a few thunderstorms late tonight into Friday. Significant ice accumulations from freezing rain are possible across portions of south central and central lower Michigan.
900 PM PDT Thu Apr 12 2018 An upper level trough will move into AZ and NM tonight with winds lightening. It will be cooler tonight as drier air invades the region under mostly clear skies, then will turn warmer into the weekend under weak high pressure and offshore flow.
Showers should begin to become more widespread during the late morning through early Friday afternoon hours as the region falls within the warm sector just downstream of a northwestern Texas cold front/central Plains low. scattered thunderstorm development is expected to occur just downstream of the cold front as it moves across central Texas. Overall, not going with a whole lot of changes with the upcoming forecast as models remain on track with the passage of the upper trof and its associated cold front tomorrow (through early Sat). The main upper trof is progged to begin moving east (from around the Four Corners area) Friday. Diurnal destabilization/increased forcing through the day will be fighting the strong cap over the region as the upper trof axis approaches from the west.