Aikyam-Lab/Synoptic-Bench huggingface dataset:
108 PM EDT SUN MAY 8 2016 A COLD FRONT WILL MOVE ACROSS THE REGION THIS AFTERNOON AND EVENING.
THE PRECIPITATION HAS INCREASED THE DEWPOINTS INTO THE LOWER 60S.
TEMPERATURES THIS AFTERNOON SOUTH OF THE BOUNDARY WERE IN THE LOWER 80S WHILE NORTH OF THE BOUNDARY MID 60S HIGHER ELEVATIONS TO LOWER 70S LOWER ELEVATIONS. MONDAY ECMWF MODEL BRINGS MORE SHOWERS AND STORMS ALONG FRONT EARLY MORNING HOURS WHICH AFFECTS MID MS AND OHIO VALLEYS BUT KEEPS RIDGING STRONG ACROSS FORECAST AREA. LOWS A FEW DEGREES COOLER DUE TO A LITTLE LESS CLOUDS AND DRIER AIR MASS.
347 PM CDT SUN MAY 8 2016 A broad area of low pressure was positioned across the Central Rocky Mountains this afternoon. Within the flow of the trof axis of the main area of low pressure. the main area of low pressure is progged to move into the Central/Northern Plains with the vort lobe shifting from the Oklahoma/Texas Panhandles into Kansas. the vort lobe should continue to lift northeast while the main low pressure joins with a wave dropping southeast out of Western Canada.
137 PM EDT SUN MAY 8 2016 HIGH PRESSURE THROUGH THE MIDDLE OF THE WEEK.
318 PM EDT SUN MAY 8 2016 HIGH PRESSURE BUILDS ACROSS THE AREA BEGINNING TONIGHT AND CONTINUES OVER THE REGION THROUGH THE WEEK. OVER THE WEEKEND LOW PRESSURE LIKELY DEVELOPS OVER THE AREA BRINGING A RETURN TO UNSETTLED WEATHER. LOWS WILL BE ON THE COOLER SIDE GENERALLY RANGING FROM NEAR 30 IN THE NORTH. A WEAK WAVE SPINNING AROUND CLOSED LOW TO OUR NORTH COULD BRING A ROUND OF CLOUDS BACK INTO THE ENTIRE CWA TOWARD DAYBREAK. WINDS DIMINISH AND SKIES CLEAR OUT MON EVENING WITH LOWS A LITTLE BIT COOLER THAN SUN NIGHT AS WILL SEE DECOUPLING.
UPPER LEVEL RIDGE FROM THE NORTHERN PLAINS NORTH INTO CENTRAL CANADA. WITH AN UPPER LOW UNDERCUTTING THE RIDGE OVER THE CENTRAL ROCKIES. CENTRAL ROCKIES UPPER LOW WILL SLOWLY MOVE EAST INTO THE CENTRAL PLAINS MONDAY MORNING. THEN MORPHS INTO AN OPEN WAVE TROUGH ACROSS THE REGION DURING THE DAY. AS THIS OCCURS WILL SEE ENERGY STARTING TO LIFT NORTH WITHIN THE TROUGH ACROSS THE DAKOTAS TRIGGERED SHOWERS AND PERHAPS SOME ISOLATED THUNDERSTORMS. WILL ONLY REACH THE LOW 60S SOUTH FOR HIGHS MONDAY THANKS TO THE CLOUDS AND EXPECTED SHOWERS. WARMER NORTH IN THE LOW/MID 70S.
1200 PM MDT SUN MAY 8 2016 AN UPPER LEVEL LOW WILL MOVE EASTWARD INTO THE PLAINS THROUGH THE DAY TODAY AND INTO MONDAY WITH A COLD FRONT PUSHING SOUTHEASTWARD OUT OF EASTERN COLORADO.
259 PM MDT SUN MAY 8 2016 AN UPPER LEVEL LOW WILL MOVE EASTWARD INTO THE PLAINS THROUGH THE DAY TODAY AND INTO MONDAY WITH A COLD FRONT PUSHING SOUTHEASTWARD OUT OF EASTERN COLORADO. MONDAY EVENING THERE MAY BE SOME LINGERING SHOWERS OVER THE NORTHEAST PART OF THE AREA AHEAD OF SUBSIDENCE THAT WILL BE MOVING THROUGH BEHIND THE CLOSED LOW MOVES THROUGH.
711 AM EDT Sun Oct 9 2016 High pressure building down from Canada will bring cooler temperatures to NY and PA today.
725 AM EDT Sun Oct 9 2016 A cold front trailed from New England to Florida this morning.
748 AM EDT Sun Oct 9 2016 A cold front has passed through the area.
1017 AM MDT Sun Oct 9 2016 Split flow exists over the western CONUS with a southern stream trough lifting northeast across AZ and NM and a deeper northern stream trough over British Columbia. Southern stream trough will pass well south of the CWA today, with just some mid and high clouds. It will be warmer today with 700mb temperatures 7-8 deg C. A strong cold front surges south across the CWA Monday night with a wind shift to the north-northeast.
923 AM EDT Sun Oct 9 2016 High pressure will build east across the region today.
1007 AM EDT Sun Oct 9 2016 Canadian high pressure will build across the northern Mid- Atlantic today and Monday before shifting offshore during the middle of the week.
Chattanooga Airport, TN 76 51 77 49 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 72 46 74 46 / 0 0 0 0 Oak Ridge, TN 72 47 74 48 / 0 0 0 0 Tri Cities Airport, TN 66 39 69 41 / 0 0 0 0.
VFR will prevail through the period with high pressure overhead. Fair weather will continue through the beginning of the week with upper level ridge overhead. A reinforcing surge of high pressure will push into the region today, with drier air continuing to enter South Texas.
1004 AM CDT SUN OCT 9 2016 Cold front well out into the gulf as Ci drifts across the region this morning. High pressure will continue over the forecast area through the period. /issued 322 AM CDT SUN OCT 9 2016/ The cold front is now well south and east of the forecast area.
1128 AM EDT Sun Oct 9 2016 Post-tropical storm Matthew passes well south and east of the region today as high pressure starts to build in from the west.
High pressure is beginning to assert its influence into the region. The forecast was leaning toward the lower dew points and higher temperatures provided by guidance.
Dewpoints are currently running 8 to 12 degrees cooler than 24 hours ago behind this pseudo- backdoor cool front so the humidity levels today will be decreasing substantially. VFR will prevail through the period with high pressure overhead. Fair weather will continue through the beginning of the week with upper level ridge overhead. A reinforcing surge of high pressure will push into the region today, with drier air continuing to enter South Texas.
1217 PM EDT SUN OCT 9 2016 A much cooler and drier airmass will advect into the region through Monday as Post Tropical Cyclone Matthew tracks further offshore the Carolina coast. Dry high pressure will build over the Mid-Atlantic and Carolinas by mid-week. Skies have cleared in central NC as strong synoptic subsidence envelops the region in the wake of Matthew, now a post tropical cyclone moving eastward offshore the Carolina coast. Expect lows similar to albeit slightly cooler than tonight, in the lower to mid 40s, coolest in rural and low-lying areas.
1025 AM EDT Sun Oct 9 2016 Aviation section updated Quiet weather with slowly increasing temperatures is expected for the next few days under the influence of high pressure. Sunny skies are expected today under high pressure. Used a bias corrected consensus for highs in the lower 70s south to mid 60s northeast. High pressure will slide east across the area during the short term. Monday night the upper ridge axis will move east and allow southwesterly flow aloft to establish itself over the area.
High pressure will settle over the region this week providing cooler and dry weather. Cool high pressure will dominate the weather for the first half of the week, providing clear skies but the coolest nighttime temps in quite a while as a low level modified polar air mass spreads down from the north.
Dry conditions the rest of today with periods of cloudiness ahead of a slow approaching cold front. A west-east oriented cold front remains situated to our north. Temperatures will be 5-10 degrees cooler on Monday. Gusty southwest winds will develop this afternoon in the higher elevations and continue ahead of the cold front through Monday.
1032 AM EDT Sun Oct 9 2016 Canadian high pressure will build across the northern Mid- Atlantic today and Monday before shifting offshore during the middle of the week.
1127 AM EDT Sun Oct 9 2016 A cold front trailed from New England to Florida this morning.
1048 AM EDT Sun Oct 9 2016 A cold front trailed from New England to Florida this morning.
1022 AM EDT Sun Oct 9 2016 A cold front will cross the region with a few showers before gradually pushing offshore today. High pressure will build in from the west late today through Monday.
1120 AM EDT SUN OCT 9 2016 A much cooler and drier airmass will advect into the region through Monday as Post Tropical Cyclone Matthew tracks further offshore the Carolina coast. Dry high pressure will build over the Mid-Atlantic and Carolinas by mid-week. Skies have cleared in central NC as strong synoptic subsidence envelops the region in the wake of Matthew, now a post tropical cyclone moving eastward offshore the Carolina coast. Expect lows similar to albeit slightly cooler than tonight, in the lower to mid 40s, coolest in rural and low-lying areas.
Model output suggests some isolated areas of sprinkles out ahead of the approaching cold front from the northwest tonight. BMickelson Stacked westerly flow occuring across the northern Rockies in response to an upper trof dropping across southern BC this morning. Lee side low developing in southern Alberta with warm front lifting through eastern Montana. The Alberta low and upper trof begin to shift east later today with cold front dropping into Montana.
526 AM MDT Sun Oct 9 2016 Upper level analysis has broad flat ridge over the western CONUS with trof across southwest Canada. At the surface, high pressure is located across Minnesota with low pressure across north central Montana. Temperatures at 3am across the CWA range from the 30s across central SD to the low 50s in Northeast WY. Dry weather will continue as upper ridge axis passes over the northern plains. Mid level flow will become southwesterly, and warmer air will advect into the region. Tight pressure gradient between exiting high in Minnesota and approaching low pressure in Montana will result in gusty southerly winds across central SD in the afternoon. Upper ridge will shift into the Great Lakes region as SW Canadian trof digs into the Northern Rockies.
100 PM EDT Sun Oct 9 2016 High pressure will build east across the region today.
644 AM CDT Sun Oct 9 2016 Expansive high pressure remains in control across the region this morning. Early morning temperatures have fallen into the mid 40s, and by daybreak, should range from the low 40s east to mid to upper 40s west.
12z 700 mb temp over Denver was 2 deg c warmer than that observed at 12z yesterday. This is reflected in the 1-4 deg f warmer sfc temps compared to those observed yesterday at same time. Sfc pres continues to fall albeit it gradually along the Front Range with leeside troughing in the warm sector of approaching 700-500 mb trough. Airmass is about 5 degrees F warmer, but clouds could take off a couple of degrees. a zonal flow aloft with a weak ridge of high pressure will be over the region. especially in the high country. dry and warm with a lee side trough present.
927 AM EDT Sun Oct 9 2016 A cold front will move offshore early this morning. Low pressure forming near the Mid-Atlantic coast will pull moisture north then track south and east of our region tonight.
1009 AM MDT Sun Oct 9 2016 An upper trough over northern AZ will gradually slide northeast and over the area today and tonight. The moisture and lift associated with the trough will move east of the area tonight with just a few lingering showers over the mountains near the Continental Divide south of Interstate 70. By Monday morning, the wave mentioned above will have shifted to the east but little reprieve as an elongated trough starts to drop down from the Pacific Northwest. Ahead of this trough, a 90kt jet streak will set up over the area.
949 AM EDT SUN OCT 9 2016 Early visible satellite photographs show resplendent sunshine with temperatures in the lower to mid 80s along with dewpoint readings in the lower to mid 70s along the island chain. Meanwhile, local radars are only detecting a few showers on the distant waters beyond 20 nm south of the Lower and Upper Keys. Surface wise, a massive continental region of high pressure is covering most of the east central United States, with an extensive ridge nosing down the Florida peninsula and into our area.
8 inches, and our shear will drop by 50 percent as the low level flow becomes more laminar. Surface dew points currently in the 50s will mix much lower by this afternoon, likely falling into the lower 40s or even 30s. So, expect cu fields as the low level moisture is recirculated, but not many storms west of the New Mexico border.
High pressure is beginning to assert its influence into the region. Tonight as Matthew progresses further east and high pressure asserts more dominance in the region, winds will again become light. The forecast was leaning toward the lower dew points and higher temperatures provided by guidance.
Expect mainly isolated showers and thunderstorms this afternoon, with the highest chances along and northeast of the Mogollon Rim.
1122 AM CDT Sun Oct 9 2016 High pressure on the surface and aloft dominating the weather pattern, resulting in dry conditions and cooler temperatures, over the Four State Region this morning and into the short term.
931 AM CDT SUN OCT 9 2016 High pressure continues to dominate the region this morning. although this high will shift eastward over the coming day to allow a more southerly flow to develop and allow increasing high clouds in the afternoon and overnight. although a weak cold frontal boundary settling down from the north may bring some north or northeast directions this afternoon or evening along/north of I-74 as the front pushes into this region and stalls out.
1110 AM EDT Sun Oct 9 2016 High pressure building down from Canada will bring cooler temperatures to New York and Pennsylvania today.
High temps not as warm as yesterday, reaching the lower 80s along the Volusia coast and mid 80s elsewhere; perhaps a few upper 80s along the Kissimmee River basin and points west.
726 AM EDT SUN OCT 9 2016 Aviation A large Canadian high pressure system will cross Lower Michigan today bringing partly sunny skies with near normal afternoon temperatures. Sunshine and slight warmer temperatures are expected Monday.
634 AM CDT Sun Oct 9 2016 Benign weather continues across the region as high pressure continues to slowly slide into the Ohio Valley this morning. another beautiful fall day is in store for the region as most locations warm into the lower 70s this afternoon under partly cloudy skies.
740 AM EDT Sun Oct 9 2016 The short term will be dry as an upper ridge builds across the southeast. 41 Mid level ridge axis will extend up Eastern Seaboard. while at the sfc a ridge will extend down the Appalachians into Ga as high pressure centers over New England.
High pressure will continue over the forecast area through the period. /issued 322 AM CDT SUN OCT 9 2016/ The cold front is now well south and east of the forecast area.
Get outside and enjoy mid 70s temperatures today, as a big change arrives tomorrow with a Canadian cold front.
Strong cold front still expected to surge through the region Fri afternoon/Fri night. By 18z Fri the cold front will stretch from south central Nebraska into SW KS with this feature along the KS Turnpike by 06z Sat, finally exiting se KS Sat morning. Should see temps slowly moderate on Sun back into the low 80s.
359 PM CDT THU AUG 18 2016 Please refer to our web site, Flood Warnings and the Advanced Hydrologic Prediction Service for details on the major and record river flooding that is still ongoing on the lower end of the Amite River basin along with many areas of backwater flooding from Pointe Coupee Parish (False River area) to near Lake Maurepas. Overall, a fairly typical summer weather regime will persist into the weekend with a Bermuda ridge extending from the the western Atlantic into the northern Gulf of Mexico.
North winds and much cooler air is moving in on the back side the of the low, with MBG and PIR gusting to around 20kts.
416 PM EDT THU AUG 18 2016 WV imagery and RAP analysis indicated mainly zonal flow through most of the nrn CONUS between a trough over nrn Manitoba and a ridge through the southeast CONUS. At the surface, a cold front extended from nw Ontario through the nw MN into nrn South Dakota with srly flow ahead of the front over the upper MS valley and nrn Great Lakes. Friday, The cold front is expected to sag into Upper Michigan and provide the focus for additional shra/tsra development as daytime heating increases.
325 PM EDT THU AUG 18 2016 High pressure over the eastern third of the U. continues to slowly drift to the southeast while low pressure over central Canada pushes into Hudson Bay. in the short term with the pattern beginning to amplify tonight as a 5H trough swings into the northern plains. Increasing instability is mainly focused over the far western Upper Peninsula mainly in the evening as a short wave approaches and with increasing moisture pooling along and ahead of a cold front sliding into the area. Thursday night, precipitation activity spreads from west to east across the region as the cold front pushes through. a bit cooler but with higher dewpoints.
Expect VFR conditions to prevail across the Rio Grande valley and the northern ranchlands the rest of the afternoon into this evening as the 500mb ridge across the northern Gulf of Mexico extending westward into deep south Texas and northeast Mexico continues to provide subsidence across the area. High pressure will build back into the region through the period. /issued 420 AM CDT THU AUG 18 2016/ SHORT TERM (Today through Friday): (Today through Friday): Even fewer showers and thunderstorms are noted this morning over the coastal waters and near shore areas as high pressure builds back westward. and the 00Z sounding noted the lower moisture values in the mid levels.
359 PM EDT THU AUG 18 2016 Weak short wave troughs moving through southwest flow aloft will continue to coincide with ample moisture remaining in place across eastern Kentucky to allow for a continued threat of scattered convection through the short term. Another short wave trough will approach early Friday morning, allowing for an uptick in rain chances towards dawn from the southwest.
201 PM CDT THU AUG 18 2016 An uptick in coverage this afternoon as the upper ridge continues to weaken over the area and some weak upper lift traverses across the tennessee valley.
All short range models have held up the next cold frontal passage slightly. It appears that Friday evening and night will be the best opportunity for highest pops areawide as the cold front moves sewd across the area. Like the previous cold front which zipped thru the fcst area about one week ago, this next cold front will likely behave in the same manner in that the atmosphere will dry out and stabilize somewhat behind it, and this is reflected in numerical weather models.
604 PM EDT THU AUG 18 2016 High pressure will build in from the west tonight and crest over the region Friday.
Highs will be in the low to middle 80s. Expect storm development along a weak boundary late today across northeast Illinois into northern Indiana in an area of weak convergence in a theta e ridge. A seasonally strong upper level trof will move into the Upper Great Lakes Region this weekend.
Remnant TUTT in SE Gulf continues to move further in Central Gulf under weak and broad upper ridge over the Deep South. Western Atlantic Bermuda high pressure axis into N FL and S GA continues to weaken with low level steering flow becoming even weaker tonight and Friday. A mid level trough moving into the eastern U. S and an attendant cold front moving into the deep south at the start of the period will help to suppress the upper and surface ridging further to the south to be across the south-central peninsula during the weekend with a light southwest to west flow developing over the forecast area.
A potent upper trough currently over southern Alberta will drop southward into northeast Montana this evening, driving widespread shower activity tonight over Phillips and Valley counties, as well as areas south of the Missouri river. By the afternoon shower activity will continue to push southeastward with the movement of the upper trough.
The actual cold front was somewhere along a line from Waskish MN to Fargo to Oakes ND. All this activity was behind the main cold front and as it continues to progress east it will move into an area already worked over from storms this morning. Cool high pressure builds over the region in the wake of a cold front.
Thunderstorm chances increase Friday as a longwave trof is progged to drop southeast out of Canada into the Plains approaching the CWA. A trailing associated strong cold front.
Upper trof continues to slowly swing across the area. Cooler temperatures for today. UPDATED 1755Z Bands of residual -SHRA left over from passage of a weak trough earlier this morning continue to make their way across parts of central MT, including near KHVR/KLWT. VFR ceilings will gradually lower from north to south starting around 22Z as a second, stronger trof and abundant moisture drop south from Alberta. Went with SHRA/RA rather than -TSRA in 18Z TAFs as less energy present due to the cooler temperatures today, but can't completely rule out inclusion of -TSRA (especially near KBZN) in later TAFs/AMDs.
Will remain in an unsettled weather pattern through the weekend as a cold front approaches the area.
233 PM PDT Thu Aug 18 2016 A dry cold front has brought windy conditions, with blowing dust and high fire danger to the Okanogan Valley and much of the Columbia Basin.
621 PM EDT THU AUG 18 2016 A ridge of high pressure will build east across the area overnight and to the east coast by Friday. A warm front will lift northeast across the area Friday.
The weak upper trough will continue to slide southward with the low center stalling out just offshore from Point Conception Friday. Moving into the weekend the trough will linger to our south and ridging will nose northward of the trough.
347 PM CDT THU AUG 18 2016 Cold front has pushed into northwest Nebraska already. A prefrontal trough across western Nebraska has been the focus for some scattered showers. Also some showers have popped up behind the cold front. Main focus is the passage of the strong cold front tonight and to a lesser extent the prefrontal trough. Behind the front cooler air settles across the region however models continue to show some instability along with qpf. Highs tomorrow will be noticeably cooler with forecast following close mos guidance in the upper 60s to lower 70s.
High pressure continues to build east of the Continental Divide setting up a surge of cold air to move across western Montana this evening. Friday cool and stable conditions will cause skies to clear out quickly for a nice, but cooler day with temperatures in the 70s in western Montana and 80s in central Idaho.
330 PM EDT THU AUG 18 2016 A ridge of high pressure will build east across the area overnight and to the east coast by Friday. A warm front will lift northeast across the area Friday.
1207 PM CDT THU AUG 18 2016 Cooler and more stable air should end the threat for severe weather today. Cold front has been moving southeast across the state with the frontal position forecast to be east of the region by noon. Cold front now appears to be pushing its way well into southern North Dakota. Early this Thursday morning a cold front stretched across North Dakota just north of Interstate 94. Cooler and drier air will move in from the northwest this morning and bring an end to precipitation from northwest to southeast through the day. As this feature moves across the baroclinic zone left from the recent cold front more abundant showers and thunderstorms will form but now mainly along and south of the North Dakota border Friday.
241 PM CDT THU AUG 18 2016 Surface map this afternoon has a warm front extending from near Sioux Falls SD through Waterloo IA and then into northwestern IL. Increasing moisture transport into/over the warm front aided by an approaching mid-level trough, per latest water vapor loop, was producing scattered thunderstorms across southern/central MN. moisture transport continues to increase over the warm front as it moves slowly northward to near I- 90 by pre-dawn hours. Focus then turns to incoming cold front Friday afternoon/night with 0-3km mucape pool of 3500-5500J/kg in place along/south of I-94.
127 PM EDT THU AUG 18 2016 A pressure ridge will extend from the Atlantic westward into the Gulf of Mexico through the weekend. North of the ridge, a pressure trough and associated moisture will be in the forecast area. The pattern indicates continued above normal temperatures because of the ridging and thunderstorms associated with the trough. Weak upper ridging will continue over the region through tonight with a lee-side trough at the surface. Convergence into the trough combined with strong heating will continue to promote scattered showers and thunderstorms this afternoon and evening. Overnight lows generally in the lower 70s.