Aikyam-Lab/Synoptic-Bench huggingface dataset:
1003 PM EDT FRI SEP 2 2016 High pressure will build into the Great Lakes then remain across the region through the Labor Day weekend. Generally clear skies will persist overnight with a light northerly wind, permitting temperatures to drop to the low and middle 50s. Meanwhile, upper ridging will build into the region from the west, while Hermine slowly moves northeast to a position off the mid Atlantic region.
Maliawco A cold front is currently making its way through portions of central and northern Montana with some compressional heating evident ahead of it with some pre-frontal temperatures reaching into the mid 90s at Jordan and Wolf Point. Saturday morning, any remaining precipitation associated with the cold frontal passage is expected to line up from SW to NE and march across the remainder of northeast Montana until mid-day Saturday. Saturday afternoon and evening, expect post-frontal high pressure to keep conditions calm and quiet with a fairly steady light NW wind.
648 PM CDT FRI SEP 2 2016 For the start of the holiday weekend, high pressure will remain in control over the region through tomorrow, with NE winds throughout the overnight. Tomorrow will be more of the same, with high pressure ridge keeping the winds more northeasterly and mostly sunny with some cumulus across Central Illinois and max temps in the upper 70s/low 80s.
901 PM CDT FRI SEP 2 2016 Quiet weather will persist across central and southeast Illinois through the night (and beyond) as high pressure dominates the local weather. For the start of the holiday weekend, high pressure will remain in control over the region through tomorrow, with NE winds throughout the overnight. Tomorrow will be more of the same, with high pressure ridge keeping the winds more northeasterly and mostly sunny with some cumulus across Central Illinois and max temps in the upper 70s/low 80s.
Upper level ridging will slowly shift off to the west tonight and Saturday, with southwest flow then setting up ahead of a west coast trough. A decent surface pressure gradient will remain over the upper midwest between high pressure to the east and low pressure to the west, keeping very windy conditions going into the evening, and breezy conditions overnight and into the day Saturday.
The water vapor pictures are still showing the weak upper level trough moving eastward over the western CWA right now. Southeasterly winds are progged over the plains on Saturday with a likely Denver cyclone.
951 PM EDT FRI SEP 2 2016 A well defined low pressure trough extends southwest from TC Hermine into nrn FL and srn GA. The NAM model shows convective activity further north due to incorrect placement of the trough but indicates strong lift and heavy precip. GFS is more in line with current thinking showing the trough drifting slowly southward overnight with drier and more stable air moving through SE GA.
Gusty winds have also diminished as the cold front approaches the forecast area and winds shift to the northwest. This Evening Through Saturday Night Deep pac nw upper trough will remain in place in the period, supporting sw flow aloft.
deep moisture will remain over the area which is pretty common in the wake of tropical cyclones. The Atlantic ridge will nudge northward into south FL but a trailing trough axis from "Hermine" will remain across north FL.
An upper low moving east of the area tonight will be replaced by a another much weaker trough on Saturday.
930 PM CDT FRI SEP 2 2016 Water vapor imagery shows much drier air filtering into the ArkLaTex behind a weak cold front this evening. These clearing skies will combine with light winds and the lower dew points to maximize radiational cooling tonight.
932 PM EDT FRI SEP 2 2016 Crystal-clear skies in place across northern MI, thanks to high pressure directly overhead.
mainly in the Delta and over ridgetops. the air mass will cool as the upper level trof over the W coast deepens and reinforces the cooler temperatures.
746 PM EDT FRI SEP 2 2016 The ridge of a strong high pressure area centered from northern Lake Michigan to Quebec will remain over the Great Lakes region through Saturday night. Lows tonight will again be pleasantly cool, in the lower to middle 50s.
Initial band of showers has helped in keeping the lower levels stable this afternoon. It will be slightly cooler compared to today as a surface front begins to move into central and eastern Wyoming. convection may linger across the high plains through the overnight hours.
606 PM CDT FRI SEP 2 2016 222 PM CDT Quiet/dry conditions expected to prevail through the period as high pressure continues to remain situated across the region. Fair conditions in place once again on Saturday but with slightly warmer temps around 80 across the area as a warming trend begins. The quiet weather will persist through the weekend, with temperatures starting out below seasonal normal levels, with lows generally in the middle to upper 50s, though the Chicago urban heat island will remain a bit warmer with overnight lows in the lower 60s.
1142 PM EDT FRI SEP 2 2016 Aviation High pressure will dominate the weather for Lower Michigan through the upcoming holiday weekend.
Partly cloudy skies will likely also persist overnight, combining with the wind to help keep low temperatures warmer than climo normal. Upper level ridging will slowly shift off to the west tonight and Saturday, with southwest flow then setting up ahead of a west coast trough. A decent surface pressure gradient will remain over the upper midwest between high pressure to the east and low pressure to the west, keeping very windy conditions going into the evening, and breezy conditions overnight and into the day Saturday.
Somewhat drier and cooler air did effectively flow down into areas roughly along and northwest of the Natchez Trace Corridor through the day. The driest weather continues to be across the highway 82 corridor, with dewpoints in the mid 60s and even the upper 50s at Greenville. Further south, dewpoints are in the lower 70s. Models show PW values increasing back to the north through the day tomorrow with the driest air remaining generally along and north of the highway 82 corridor. This, along with increasing temperatures back into the lower to mid 90s, will help generate mainly afternoon and evening showers and thunderstorms.
In addition to the low clouds, visibilities may also go below 6SM at some point, mainly near KSJT where moisture still lingers from heavy rainfall last night.
715 PM EDT FRI SEP 2 2016 High pressure will continue to build across our region from eastern Canada into the weekend.
This Evening Through Saturday Night Deep pac nw upper trough will remain in place in the period, supporting sw flow aloft.
1024 mbar high pressure center over Great Lakes with Hermine pushing into South Carolina at mid afternoon with Cirrus shield extending back across far eastern Tennessee.
956 PM EDT FRI SEP 2 2016 High pressure over the Great Lakes and Northeastern U.
Winds remaining lighter farther north closer to high pressure ridge axis. This high will dominate into Saturday.
1205 AM EDT SAT SEP 3 2016 High pressure will build across the region through the weekend. Did not make any changes to the low temperatures as there may still be another opportunity for them to fall just prior to sunrise. Orgnl Disc: Showers in Washington County will taper off in the next couple of hours as an upper level trough shifts east. Light winds and clearing skies will lead to a cool night with lows in the low to mid 40s north and upper 40s to lower 50s for Bangor and the Down East region. Raised the low temp forecast as the air mass is not as dry as previously expected and some stratocu fields may slow cooling. The high builds tomorrow with low humidity and slightly warmer temperatures reaching the low 70s in most locations.
820 PM EDT FRI SEP 2 2016 High pressure will continue to build across our region from eastern Canada into the weekend.
Once this moves out expect a dry night all areas overnight and thru most of Saturday until cold front from the west arrives into DVL region mid to late afternoon. Warmer on Saturday with highs in the 80s for the valley and west as the winds efficiently mix once again from near 800mb.
1144 PM EDT FRI SEP 2 2016 High pressure over the Great Lakes and Northeastern U.
An upper level trough will remain over the Pac NW through the weekend bringing below normal temperatures and possibly a shower or two to a few locations, particularly across the coast range and in the Cascades.
An upper level trough of low pressure over Western Canada and the Pacific Northwest will gradually dig over the Western United States, keeping the forecast area under a somewhat moist southwest flow aloft.
1158 PM EDT FRI SEP 2 2016 VFR conditions will persist as high pressure expandS across the northeast quadrant of the CONUS. NE flow should dip below 7 knots by 06z and generally remain below that level as the pressure gradient weakens with building high pressure. Building upper ridge axis now anchored across the Mississippi River Valley will arc northeast and into Great Lakes over the next 24 hours. The resulting 588-590 DM upper high will effectively remain centered across the region through the weekend, as the extensive north-south elongated ridge pinches into the tropical system Hermine circulating off the Mid Atlantic coast.
324 AM MDT Fri Mar 24 2017 Current surface map places deep low across southeast Colorado with high pressure across the western Dakotas. For the rest of today, upper low will move into central plains with northern Rockies ridge shifting into the northern plains. Next upper trof in progressive flow moves across the Rockies on Saturday with increasing southwest flow aloft. Thermal profiles support rain/snow mix across northeast Wyoming with snow in the higher elevations of the Black Hills.
Upper ridge axis is located almost directly over our area this morning, but it will be moving east throughout the day today. The closed upper low over the plains will head east today, stirring up showers and thunderstorms for areas west of the Mississippi River. Friday night into Saturday morning, the low will take a turn toward the northeast and push showers and thunderstorms into western Tennessee by early Saturday morning. With the shear, instability and forcing from the passing low pressure system to the northwest we could certainly see some strong storms across much of the area, with isolated severe possible in the southwestern counties.
345 AM CDT Fri Mar 24 2017 A nearly vertically stacked low pressure system has developed over SE Colorado with a triple point over central Kansas extending a warm frontal boundary up through central Nebraska and a weak cold frontal boundary south into northern TX. As the low moves into northern Arkansas and southern MO Friday night into Saturday as the occluded like boundary pushes through the area creating another round of scattered showers with embedded elevated thunderstorms throughout most the day on Saturday.
Today should be a quiet, dry day across Montana as a ridge builds into the area. Saturday the ridge will give way to another trough. A cold front will move through during the morning which will lead to cooler temperatures and scattered rain showers. Precip chances will continue overnight as the front stalls out and the main trough axis moves across the northern Rockies.
The main items of interest for today is the deformation rain band that is forecast to wrap around the synoptic low and the high wind potential. Therefore, have the highest pops in our north across the forecast district. This should delay the onset on the strongest winds on the backside of the low. Have added an end warning buffer since the low is moving more slowly across the greater region. The model does continue to vary with the position of this heavier axis as the synoptic lows/trofs keep changing with each run.
321 AM CDT Fri Mar 24 2017 Low pressure system continues to deepen over the High Plains of southeast Colorado early this morning, keeping a stout south wind over the forecast area. Storm development has remained well to our west in vicinity of a dry line over western KS/OK, and along the warm front over NE/IA. By mid to late evening, will carry high pops all areas as main low pressure system approaches the region and cap gradually erodes. Low pressure will be over the region Saturday morning so will keep precipitation going through the afternoon before tapering off in the evening as the storm system weakens and lifts northeast of the Ozarks.
The 5 pm regional surface analysis showed a strong ridge along the Southeast coast, and a weakening, quasi-stationary front near and along the GA-AL border. An upper level low located over the Great Plains will move northeastward moving over Illinois on Saturday. The associated cold front near the Southeast with precipitation out ahead of the frontal boundary.
624 AM EDT Fri Mar 24 2017 High pressure will maintain fair weather today.
353 AM EDT Fri Mar 24 2017 A warm front will drift northeast from the Ohio River Valley today, and we could see a brief period of freezing rain this morning followed by a rapid warm up.
515 AM EDT Fri Mar 24 2017 A warm front will cross the region today with a cold front crossing tonight.
Temperatures were able to drop to the low 70s degrees with dew points in the mid 60s. A mid-level trough will still be moving away from the peninsula this afternoon, which will aid in the development of additional showers later this morning and early afternoon. By tonight, a high pressure will extend into the local area, allowing for the improvement of the weather conditions. As this high pressure and its western ridge settles into our area, winds will weaken and weather conditions will return to mostly clear to partly cloudy skies, temperatures near 80 during the day and lower 70s at night.
153 AM EDT Fri Mar 24 2017 High pressure will begin to move east of the region overnight. A warm front will cross the region Friday followed by a cold front Friday night.
219 AM EDT Fri Mar 24 2017 High pressure will maintain fair weather today.
A ridge of high pressure along and just east of the southern Appalachians will produce another dry and warm day. Satellite shows a broken ceiling (around 850mb) advecting north into the area due to the low-leve southerly flow around the ridge.
630 AM EDT Fri Mar 24 2017 High pressure will continue to extend over the area while moving offshore today and tonight.
Southwest flow aloft ahead of an impressive upper level trough is visible off the Pacific NW coast this morning. Temperatures will be a tricky forecast today, with lower 60s expected in the Magic Valley, and much cooler temperatures across the north and west in the rain cooled air. The higher peaks above 7500 feet will see significant snow accumulations of 6-10 inches with this system. With cooler air aloft on Saturday, scattered showers are expected to develop across the entire region on Saturday afternoon with daytime heating creating instability.
An upper level low is forecast to sweep through the Natural State this weekend and bring with it a strong cold front and stormy weather. As of this afternoon, an upper level trough was located in the four corners region and is approaching the plains where it is forecast to intensify into a closed off low. Ahead of the upper level low, winds in Arkansas will strengthen as the pressure gradient tightens and forcing increases. However, after the cold front moves through the region Friday and Friday night, overnight lows on Friday night will be in the lower 50s and highs on Saturday will be in the upper 60s and lower 70s. Once the cold front pushes through the state on Saturday, drier air will filter in from the west.
613 AM EDT Fri Mar 24 2017 High pressure will maintain fair weather today.
and the lift ahead of the elevated warm front likely helped spark the TSRA with hail that quickly moved into SD. the latest subjective surface analysis has the warm front lifting across the forecast area with showers and thunderstorms ahead of it. Temperatures south of the warm front have warmed into the mid and upper 60s with dewpoints in the 50s. The large mid-tropospheric trough over NV/CA is forecast to shift toward the four-corners area then deepen over CO/wrn KS overnight into a closed low. The combination of the the approach of the upper level trough/broad upper level divergence/waa/mid-level frontogenesis have isolated to scattered storms this afternoon.
Upper air analysis last evening showed a trough extending from the Four Corners region to northwestern Mexico. At the surface, a cold front extended from a low over southeastern Colorado to near Childress to Sweetwater to Dryden. The upper level trough will move across our area today and tonight bringing the cold front along with it. Some cooler air will drop low temperatures Saturday morning by 10 to 15 degrees.
A weak warm front is progressing NE and while there is a slight kink in isobars the front is tough to define. Tonight the cloud challenge will continue as the lower deck is expected to dissipate. Also think most will remain dry on Saturday given upper level trough will negatively tilt across the Midwest and slow surface features down.
658 AM EDT Fri Mar 24 2017 Expect dry and mild weather today in a breezy southerly flow ahead of low pressure centered to the west.
305 AM MST Fri Mar 24 2017 A high pressure will move quickly through the region today, ahead however another Pacific disturbance expected over northern Arizona Saturday.
145 AM EDT Fri Mar 24 2017 A warm front will lift north across the area tonight.
247 AM CDT Fri Mar 24 2017 Not much going on aside from the fog as precipitation associated with an upper low remains to the south. 850mb dry air advection should help with that today as an induced high pressure bends around the north side of the low to the south.
Some wrap around showers will be possible by late this afternoon and through the night across northern Oklahoma as the upper low gradually pushes east. Cold temperatures aloft, associated with the upper low, may lead to the possibility for a few cold air funnels late today into the evening hours as well.
212 AM EDT Fri Mar 24 2017 Warmer weather returns with temperatures climbing well above normal this weekend.
419 AM EDT Fri Mar 24 2017 Expect dry and mild weather today in a breezy southerly flow ahead of low pressure centered to the west.
345 AM CDT Fri Mar 24 2017 Intense mid-level cyclone associated with 150 m H5 height falls this evening was located over SE CO early this morning. Broad zone of ascent associated with strong low- to mid-level thermal advection was ongoing to the northeast of the cyclone from the central Plains to the upper MS river valley. Models are in fair agreement today in the upper level cyclone moving east across southern KS/northern OK and into eastern MO by Saturday night. As temperatures ahead of the cold front increase to around 70, and forced ascent associated with 700-400 CDPVA becomes juxtaposed over the southern CWA we will likely see isolated to scattered convection develop.
322 AM EDT Fri Mar 24 2017 Warmer weather returns with temperatures climbing well above normal this weekend.
A thin band of showers is currently moving across the area early this morning as a cold front moves through the area. A potent upper level low currently in southeastern CO will continue moving northeast into the Central Plains today. On the southern side of this low, downward momentum will bring strong west to southwesterly winds to the surface. Although, a cold front will have moved through, dry, downsloping winds and partly cloudy to clear skies will allow temperatures to warm into the upper 70s to near 80 degrees. The medium range models indicate intense upper level troughs/lows moving east across the Southern Plains.
633 AM EDT Fri Mar 24 2017 Warmer weather returns with temperatures climbing well above normal this weekend.
230 AM EDT Fri Mar 24 2017 High pressure will continue to extend over the area while moving offshore today and tonight.
Current water vapor imagery shows a 500mb low over the High Plains and much drier airmass across northern Mexico and west Texas. The latest surface analysis shows a cold front across northwest Texas extending south to the Big Bend region. The mid level low/trough will move over Oklahoma today, pushing a weak cold front into Deep South Texas this afternoon. High temperatures today will range from the 80s near the coast to the low to mid 90s across the west. The 500mb low will lift northeast tonight and Saturday as mid level ridge axis moves over Texas. Low temperatures tonight will be in the 60s, except for the lower 70s along the coast. High temperatures Saturday will range from the 80s along the coast to the low to mid 90s inland under partly cloudy skies.
The day begins with Northeast Montana under an upper level ridge. Today with ridging we can expect another mild day with above normal highs and a southerly breeze. But tonight, flow aloft begins to back around to the southwest as the trough splits off, sending a cold front into the Pac-NW. Another piece of the trough swings across the Great Basin. Saturday the trough brings the cold front into the local region, but the northern portion of the Pac-NW trough heads into Saskatchewan, taking the moisture with it. However, the southern trough finally sends moisture along the front that clips the southeast portion of the GGW CWA.
HIGH AMPLITUDE UPPER-LEVEL RIDGING HAS CONTRIBUTED TO AMPLE SUNSHINE AND VERY WARM/DRY CONDITIONS ACROSS THE AREA TODAY. AFTERNOON WATER VAPOR SATELLITE IMAGERY SHOWS A STRONG UPPER LOW SPINNING OFF COAST OF NORTHERN CA/OR. GOING TO NEED TO WATCH THE LOWER ELEVATIONS OF CARBON COUNTY WITH MAV AND MET GUIDANCE BOTH SHOWING 30 KT SUSTAINED WINDS AND 50+ KNOT FLOW AT THE TOP OF THE MIXED LAYER.
814 PM PDT FRI APR 22 2016 A strong upper level low and associated cold front will push into the region tonight bringing a chance showers with thunderstorms possible this through the evening. As the low dives into southern Idaho late tonight, it will shift the focus for precipitation across southeast Washington and the southern Idaho Panhandle. Temperatures will be considerably cooler than what what was experienced over the past several days.
A CLOSED UPPER LOW OVER WESTERN OHIO WILL MOVE ON TO THE EAST AND HIGH PRESSURE WILL MOVE EAST ACROSS OUR REGION SATURDAY.
/ISSUED 341 PM CDT FRI APR 22 2016/ LATEST WV IMAGERY AND UA ANALYSIS SHOWS DRIER AIR CONTINUING TO SPREAD OVER THE REGION BEHIND AN UPR TROF AXIS THAT EXTENDS FM AN UPR LOW CROSSING THE OHIO VALLEY. UPSTREAM RIDGING WAS NOTED OVER THE SRN ROCKIES. A COLD FRONT HAS MOVED EAST OF THE AREA WITH HIGH PRES BUILDING IN BEHIND IT. EXPECT AFTN HIGHS REACHING THE LOWER 80S.
634 PM CDT FRI APR 22 2016 Surface and upper ridging will move into Illinois tonight allowing winds to diminish and any remnant cloud cover to scatter out early this evening.
856 PM PDT FRI APR 22 2016 A LOW PRESSURE TROUGH WILL MOVE ACROSS THE REGION TONIGHT, CREATING COOLER WEATHER, MORE CLOUDS, STRONG WINDS IN THE MOUNTAINS AND DESERTS, AS WELL AS A SLIGHT CHANCE OF LIGHT SHOWERS TONIGHT.
A COOL LOW PRESSURE SYSTEM OVER THE REGION FRI WILL MOVE EAST TONIGHT AND EARLY SATURDAY FOR DECREASING SHOWERS.
923 PM EDT FRI APR 22 2016 AN UPPER LEVEL LOW AND ASSOCIATED COLD FRONT WILL MOVE EAST ACROSS THE AREA TONIGHT INTO SATURDAY MORNING.
HIGH PRESSURE WILL DOMINATE THROUGH THE TAF PERIOD WITH WIDESPREAD VFR CONDITIONS EXPECTED. AN UPPER RIDGE WILL BUILD INTO THE REGION OVER THE NEXT 24 HOURS.
630 PM CDT FRI APR 22 2016 SURFACE PRESSURE FALLS WILL OCCUR TONIGHT INTO SATURDAY OVER THE HIGH PLAINS. STRENGTHENING UPPER TROUGH/LOW MAY PROVIDE ENOUGH LIFT FOR ISOLATED-WIDELY SCATTERED THUNDERSTORMS IN CENTRAL KANSAS.
Surface and upper ridging will move into Illinois tonight allowing winds to diminish and any remnant cloud cover to scatter out early this evening.
817 PM EDT FRI APR 22 2016 A COLD FRONT WILL PUSH THROUGH THE REGION TONIGHT.
UPPER LEVEL RIDGE EXTENDED FROM THE WESTERN DAKOTAS TO SOUTHERN SASK. UPPER RIDGE WILL SHIFT SOUTH AND EAST OVERNIGHT. HIGH PRESSURE SLIDING EAST OF THE AREA AT MID AFTN AS SOUTHERLY SFC FLOW IS OVER MOST OF THE FORECAST AREA. FARTHER NORTH IN THE COOLER AIRMASS MORE SHOWERY.