Aikyam-Lab/Synoptic-Bench huggingface dataset:
Should be a nice 12 hour period of flight operations across the Great Valley with dry air giving way to a little more moist environment with a cold front building into the Southern Appalachian region on Saturday.
Moisture will return tonight though as next trough in the progressive flow will drop down. High pressure will ridge into the region Saturday night.
The front ran from the low southwest through Kansas. Another front ran from the low northeast into Wisconsin. After midnight, quiet and chilly conditions will be seen across the area as high pressure begins to build in from the Plains. A short wave dropping into the mean trof will provide some waa and lift, resulting in mid clouds and even a low chance for sprinkles late Saturday night.
849 PM PDT FRI MAY 13 2016 The weather pattern today remained mostly unchanged from yesterday with sunny skies prevailing at most locales after the low stratus associated with the marine layer dissipated. However, the low stratus hung tough again today along portions of the immediate coast. The low stratus is making its way slowly back inland and this will be the trend overnight with the stratus advancing 25+ miles inland.
716 PM EDT FRI MAY 13 2016 A cold front will return showers to the forecast early on Saturday with much cooler and unsettled weather expected for the weekend. Building high pressure is expected to maintain dry weather this evening as diurnal cu/stratocu dissipates. A cold front is expected to approach late tonight with increasing shower chances. Maintained categorical pops with the passage of a cold front early Saturday morning, with sufficient deep layer moisture and ascent.
1139 PM CDT FRI MAY 13 2016 An upper jet/speed max will barrel across the upper Mississippi valley this evening, and drive a cold front thru the PAH FA overnight. After tonight-early tmrw, much cooler and drier air works across the FA in the wake of the Fropa.
A cold front will move through the area tonight shifting the winds to the north. /ISSUED 307 PM CDT FRI MAY 13 2016/ Focus this evening will be on convection developing along the cold front currently from NE KS into far NW OK. Cooler and drier air will overspread the region behind the cold front.
952 PM EDT FRI MAY 13 2016 A cold front will push through the area Saturday afternoon.
A cold front has progressed across the combined Texas and Oklahoma Panhandles this evening, with no further convective development expected due to a cooler, more stable environment. An upper low located over the Hudson Bay in Canada will keep the Panhandles under northwesterly to westerly flow during the overnight hours.
Enough influence from the departing low pressure system will remain over the region, and clearing skies are expected. This combination will drop overnight temperatures tonight to and slightly below the freezing mark.
Gradient wind remains much of the night as well as a northwest wind develops and draws in sub freezing temperatures to much of the central cwa. Frost formation will be limited to mainly sheltered areas but because of the forecast lows near freezing outside of the freeze warning we decided to advise of the possibility. Temperatures will struggle to warm to 50 even with some sunshine as the cold trough exits to the east.
Decaying convection along a cold front across Missouri and Northern Arkansas will continue to spread high level moisture into the Midsouth tonight. A cold front currently extends from southeast Wisconsin through central Iowa and into western Kansas. While there are showers and thunderstorms along the cold front at this time, the front will encounter drier air as it pushes south. THe cold front will move through the remainder of the forecast area Saturday morning. Cooler air will move into the region behind the front so temperatures will be below normal with highs in the upper 60s to mid 70s. High pressure will remain over the region Saturday night bringing unseasonably cool air across the forecast area.
Cold high pressure will move over the region. Minimum temperatures will still fall below freezing tonight across the region and will leave the freeze warning going. Hence, our thinking is the freezing temperatures north will occur near or around 06z, with steady or slowly rising temperatures above freezing late tonight in the north central. The latest water vapor imagery shows a large cyclonic circulation emanating from an upper low over southern Ontario. This continues to draw down much cooler air via a north to northwest flow.
The main concern in the short term will be the freezing temperatures tonight along with some frost again Saturday night. A large upper level low pressure area off to our northeast in Canada will continue to funnel colder and drier air into our region through the entire short term.
740 PM EDT FRI MAY 13 2016 A secondary cold front will move through the region tonight, bringing a chance of rain showers. An upper level low will settle into the Great Lakes this weekend, providing cooler temperatures and a lingering chance of a shower on Saturday. cooler air will begin to work in behind the rain, dropping temperatures into the mid 40s in the nw. Counties in the se will stay in the lower 50s.
Otherwise, a cold front will move through the area on Saturday, resulting in gusty E/NE winds, and another shot at some thunderstorms, mainly after 18Z. /issued 245 PM CDT FRI MAY 13 2016/ WV imagery shows West Texas and Southeast New Mexico sitting under the east side of an upper ridge extending from central Mexico NW thru the PacNW. At the sfc, a trough extending from NE NM thru IA is prompting a steady fetch of return flow throughout the region, with dewpoints in the 60s backed up against the higher terrain. Meanwhile, to the north of the Central Plains trough, a cold front is poised to move thru the area Sat/Sat night, and stall near or before the Pecos.
Current forecast in good shape this evening with mostly clear skies gradually becoming partly cloudy late tonight as a cold front approaches the forecast area. Chattanooga Airport, TN 54 75 46 70 / 0 10 0 10 Knoxville McGhee Tyson Airport, TN 54 71 43 66 / 0 20 0 0 Oak Ridge, TN 53 72 42 67 / 10 20 10 0 Tri Cities Airport, TN 48 72 40 63 / 10 30 10 0.
1029 PM CDT FRI MAY 13 2016 Increasing high clouds continue to spread across the region ahead of an approaching cold front. A disturbance aloft will also be nudging a cold front Southeast across the plains that will be moving into the Four State Region late tonight after 14/09Z.
A cold front will move south into the area Saturday morning with a chance of thunderstorms along it.
A disturbance aloft will also be nudging a cold front Southeast across the plains that will be moving into the Four State Region late tonight after 14/09Z. /issued / Increasing high clouds continue to spread across the region ahead of an approaching cold front.
MUCH DRIER AIR WILL CONTINUE TO FILTER IN FROM THE NW TRAILING THE ACTUAL SURFACE COLD FRONT WHICH WAS PUSHING ACROSS OUR GA ZONES THIS EVENING. TEMPS WERE ON TRACK TO FALL INTO THE UPPER 50S ACROSS SE GA TO THE LOWER 60S NE FL BY DAYBREAK SAT.
expecting clouds to spread south and west with the push of a shallow cold front. Quite a contrast in temperatures early this afternoon with mid 40s to lower 50s in the cooler air mass behind the cold front over the plains along and east of I-25, with 60s to near 70 degrees over Carbon and Albany counties in the warm sector. We may see isolated showers and thunderstorms develop through early evening and spread eastward onto the plains, though the low levels are so stable that it will be difficult for showers to develop. Cooler air in the wake of the cold front remains entrenched as ridging aloft moves into western Wyoming. Ridge aloft moves to central Wyoming with moist low level upslope southeast winds continuing and producing widespread low clouds, fog and drizzle from Rawlins to Laramie to Cheyenne and Kimball.
/ISSUED 248 PM CDT FRI MAY 13 2016/ A large area of high pressure across the mid Mississippi valley ridging eastward into the Tennessee valley was providing for sunny skies and temps in the low to mid 70s across the forecast area. As the high pressure area moves across the region this evening, winds will become light and variable and temps will drop into the low to mid 50s by morning. A cold front will move southeast out of the lower Ohio valley late tonight, and through the forecast area on Saturday with just a few clouds and no precipitation expected. Cold advection in the afternoon in the wake of the cold frontal passage will keep temps into the low to mid 70s across the area.
941 PM EDT FRI MAY 13 2016 A secondary cold front will move through the region tonight, bringing a chance of rain showers. An upper level low will settle into the Great Lakes this weekend, providing cooler temperatures and a lingering chance of a shower on Saturday. A cold front currently stretching from southern Lake Michigan, through central Illinois and into northern Missouri, will push east into our area overnight.
739 PM EDT FRI MAY 13 2016 A cold front will drop rapidly southeast from the upper midwest and cross our area tonight.
1049 PM CDT FRI MAY 13 2016 a cold front will move through southern oklahoma tonight and leave northeast winds in its wake. winds will become lighter saturday afternoon as high pressure moves into oklahoma. /issued 645 PM CDT FRI MAY 13 2016/ A cold front with scattered thunderstorms will pass through oklahoma this evening. /issued 222 PM CDT FRI MAY 13 2016/ A prefrontal trough continues to make its way southward into NW OK this afternoon. Cumulus are becoming more numerous along this trough where inhibition is limited and mlcape has climbed to around 1-1. The best moisture convergence still appears it will be over western and southwestern OK through this evening so expect the highest coverage there.
A cold front will move south into the CWA early Saturday, shifting winds from the northeast at 10-15 kts and resulting in low clouds across the area. Additional convection will be possible in the vicinity of this cold front tomorrow. A cold front is forecast to approach the northern Big Country after midnight, with showers and thunderstorms developing along and ahead of the front. Overnight low temperatures will be in the low to mid 60s. On Saturday, a cold front will be across the Big Country and slowly move south, approaching the Interstate 10 corridor by mid to late afternoon. High temperatures will range from the upper 60s to near 70 across the Big Country to the low to mid 80s across the Interstate 10 corridor.
937 PM EDT FRI MAY 13 2016 A seasonally modified arctic cold front will move southeast across the area tonight.
A cold front currently extends from southeast Wisconsin through central Iowa and into western Kansas. While there are showers and thunderstorms along the cold front at this time, the front will encounter drier air as it pushes south. THe cold front will move through the remainder of the forecast area Saturday morning. Cooler air will move into the region behind the front so temperatures will be below normal with highs in the upper 60s to mid 70s. High pressure will remain over the region Saturday night bringing unseasonably cool air across the forecast area.
Temperatures were on track to fall into the upper 50s across SE Ga to the lower 60s across inland NE Florida.
A strong cold front pushing south across western and central Kansas this afternoon extended from near Great Bend to just north of Dodge City to near Johnson. A northeast to southwest oriented dryline/trough ahead of the front from had passed through Dodge City and Liberal. A drier boundary layer behind the trough will likely preclude any thunderstorm development through the remainder of the afternoon. Ahead of the trough, low level moisture advecting up from the south and southwest had resulted in an increasingly unstable airmass. Much cooler air will be spreading into southwest Kansas tonight. High temperatures will be considerably cooler, in the upper 50s and lower 60s.
807 PM EDT FRI MAY 13 2016 Aviation Low pressure will bring some rain tonight and Saturday then cold weather moves in with rain and even some snow showers across northern Lower Michigan on Saturday afternoon and evening.
930 PM MST FRI MAY 13 2016 High pressure over the region is starting to weaken and signals a change to slighly cooler temperatures and more breezy conditions for the weekend.
MSAS data currently has the region falling in between two cold fronts. lower level environmental shear and lowering freezing (wet bulb zero) heights.
645 PM CDT FRI MAY 13 2016 A cold front with scattered thunderstorms will pass through oklahoma this evening. /issued 222 PM CDT FRI MAY 13 2016/ A prefrontal trough continues to make its way southward into NW OK this afternoon. Cumulus are becoming more numerous along this trough where inhibition is limited and mlcape has climbed to around 1-1. The best moisture convergence still appears it will be over western and southwestern OK through this evening so expect the highest coverage there.
1105 PM CDT FRI MAY 13 2016 Surface map indicates the cold front was pushing through Peoria and extending southwest to a weak wave of low pressure just west of Springfield as of 800 pm. Still could see some wind gusts up to 50 mph with some of the more intense showers that push into east central and southeast Illinois with gradient winds of 40 to 45 mph being reported after the cold front sweeps through. Most of the Midwest under west/northwesterly flow aloft from a broad closed low btwn the Great Lakes and Hudson Bay this afternoon. After the sun sets, the severe threat should diminish quickly, even if the thunderstorms are expected to continue through the evening until the cold front clears the region.
This was thanks in large part to the cold front that moved through yesterday. The front isn't expected to arrive until mid morning so have left temps as is for this evening with lows in the low to mid 50's. with winds becoming lgt/vrbl after sunset and an increasing coverage of ci debris expected from tsra along a strong cold front well to the nw of the region.
1009 PM EDT FRI MAY 13 2016 A cold front crossing the region will result in area wide showers this morning and breezy, much cooler, and unsettled weather throughout weekend. Cloud coverage will increase late tonight ahead of a cold front approaching from the west.
Saturday we will see increasing showers and thunderstorms over the high country. (This evening through Saturday) Issued at 1221 PM Fri May 13 20156 Cold front has pushed through all of the lower elevations of the CWA with upslope flow in place. Northwest flow aloft ahead of an upper ridge will continue through Saturday along with little in the QG dynamics department. An upper level trough over the Pacific northwest will gradually make its way south and east towards Colorado over the weekend.
A cold front will sweep southeast across central Indiana overnight and bring widespread showers and a few thunderstorms to the area. look for much cooler and dry weather in the wake of the front for the remainder of the weekend.
/issued / Decaying convection along a cold front across Missouri and Northern Arkansas will continue to spread high level moisture into the Midsouth tonight. A cold front currently extends from southeast Wisconsin through central Iowa and into western Kansas. While there are showers and thunderstorms along the cold front at this time, the front will encounter drier air as it pushes south. THe cold front will move through the remainder of the forecast area Saturday morning. Cooler air will move into the region behind the front so temperatures will be below normal with highs in the upper 60s to mid 70s. High pressure will remain over the region Saturday night bringing unseasonably cool air across the forecast area.
635 PM CDT FRI MAY 13 2016 An upper jet/speed max will barrel across the upper Mississippi valley this evening, and drive a cold front thru the PAH FA overnight. After tonight-early tmrw, much cooler and drier air works across the FA in the wake of the Fropa.
Immediately on its heels, however, will be an approaching cold front which will work across the area tonight. It will be noticeably cooler on Saturday. However, given the high sun angle this time of year and the expected afternoon cloud cover erosion, will go with upper 60s Nashville and points south and southwest. The mercury will only reach the lower to mid 60s for the Plateau and our far northern tier of counties. Dewpoint temps will remain above freezing so the zero to 2 meter temps are not expected to get cold enough to promote any frost formation.
An upper level low will move towards the Oregon coast tonight producing a deep marine push, some showers and maybe a few thunderstorms across northwest Oregon and southwest Washington.
902 PM CDT FRI MAY 13 2016 Surface map indicates the cold front was pushing through Peoria and extending southwest to a weak wave of low pressure just west of Springfield as of 800 pm. Still could see some wind gusts up to 50 mph with some of the more intense showers that push into east central and southeast Illinois with gradient winds of 40 to 45 mph being reported after the cold front sweeps through. Most of the Midwest under west/northwesterly flow aloft from a broad closed low btwn the Great Lakes and Hudson Bay this afternoon. After the sun sets, the severe threat should diminish quickly, even if the thunderstorms are expected to continue through the evening until the cold front clears the region.
Another short wave trough is forecast to rotate around the upper level low over Ontario and then come down across the region Saturday afternoon. The tail end of this short wave trough will track over the area Saturday night. There will still be a cyclonic flow aloft as well and with the additional lift from the the short wave trough and frontogenesis, will add in a small precipitation chance across portions of southeast Minnesota and northeast Iowa. The other concern for Saturday night is for frost and freezing temperatures. With the short wave trough coming down, some uncertainty on how much cloud cover will be present away from the frontogenesis zone.
615 PM CDT FRI MAY 13 2016 The main concern in the short term will be the freezing temperatures tonight along with some frost again Saturday night. A large upper level low pressure area off to our northeast in Canada will continue to funnel colder and drier air into our region through the entire short term.
152 AM EDT SUN APR 24 2016 HIGH PRESSURE BUILDS SOUTH INTO THE AREA LATER TONIGHT INTO SUNDAY. THE HIGH GRADUALLY SHIFTS OFF THE COAST ON MONDAY.
PUSHING CIRRUS INTO THE NORTHERN PLAINS WHERE A WEAK RIDGE RESIDES. LOW PRESSURE IS OVER NORTHEASTERN WY. WITH WARM FRONT STRETCHED ACROSS NORTHWEST/CENTRAL SD. AS UPPER LOW MOVES OVER WY LATE THIS AFTERNOON AND EVENING. AND PRECIP AND COOLER AIR WILL WRAP AROUND INTO NORTHWESTERN SD AND NORTHEASTERN WY. PRECIP WILL SHIFT EASTWARD WITH THE LOW DURING THE AFTERNOON AND OVERNIGHT.
A RIDGE OF HIGH PRESSURE OVER THE OH AND TN VALLEYS WILL DRIFT EAST ON MONDAY ALLOWING SOUTHERLY FLOW TO DEVELOP.
AN AREA OF LOW PRESSURE CURRENTLY OVER SE MONTANA IS PRODUCING GUSTY SOUTHERLY WINDS IN THIS CWA. WHILE MSAS ANALYSIS SUGGEST THE WARM FRONT IS LOCATED OVER SOUTH CENTRAL SD. STRONG STORMS SUNDAY AFTERNOON WILL BE DEPENDENT ON THE LOCATION OF THE WARM FRONT AND WHETHER OR NOT SKIES ARE ABLE TO CLEAR.
SHOULD SEE MORE SHOWERS AND STORMS DEVELOP IN THE AFTERNOON AND INTO EVENING AS LOW PRESSURE AND THE ASSOCIATED COLD FRONT MOVE THROUGH. LATEST MODELS HAVE TRENDED NORTHWARD WITH THE WARM FRONT. RESULTING IN A HIGHER PROBABILITY OF WARMER TEMPS. AS A FARTHER SOUTH COLD FRONT WILL RESULT IN MUCH COOLER TEMPS. WHILE A FARTHER SOUTH FRONT WILL BRING IN AN EASTERLY COMPONENT AND KEEP THINGS MUCH COOLER.
1200 AM EDT SUN APR 24 2016 HIGH PRESSURE WILL BUILD ACROSS THE REGION TONIGHT THROUGH SUNDAY.
DEEP LOW PRESSURE OVER WESTERN SOUTH DAKOTA AND HIGH PRESSURE ACROSS MANITOBA WERE ENHANCING THE LOW LEVEL WINDS ACROSS NORTH DAKOTA. WATER VAPOR CHANNEL SHOWS THE 700 MB UPPER LOW IN THE VICINITY OF WEST CENTRAL WYOMING. A WARM FRONT EXTENDED FROM THIS LOW AND WAS DRAPED ALONG THE SOUTHERN BORDER. WITH THIS WARM FRONT REMAINING JUST SOUTH OF OUR BORDER TONIGHT/SUNDAY. WITH THE TURTLE MOUNTAINS PINPOINTED FOR THE HIGHEST SUSTAINED WINDS OF AROUND 30 MPH AND GUSTS TO 45 MPH.
A SFC TROF OF LOW PRESSURE HAS BECOME BETTER ORGANIZED OVER ERN CO AND ERN NM. THE LOW LEVEL JET IS FCST TO DEVELOP THIS EVENING. AN UPPER LEVEL CLOSED LOW OVER THE INTERMOUNTAIN WEST WILL HEAD ACROSS THE CNTRL PLAINS SUNDAY. FOLLOWED BY A WEAK COLD FRONT SEWD ACROSS THE AREA SUNDAY NIGHT.
WENT AHEAD AND STARTED THE HIGH WIND WARNINGS NOW INSTEAD OF MIDNIGHT AS THE WINDS ARE ONLY GOING TO BECOME MORE PERSISTENT AS THE EVENING PROGRESSES. UPPER LOW IS CURRENTLY LOCATED NEAR SALT LAKE WITH SOUTHERLY FLOW ALOFT AHEAD OF IT. CLOSED LOW WILL MOVE EASTWARD OVER WYOMING OVERNIGHT WITH ASSOCIATED FROPA. UPGRADED THE HIGH WIND WATCH OVER THE WIND PRONE AREAS AND DECIDED TO ALSO INCLUDE THE LARAMIE VALLEY AND CENTRAL LARAMIE COUNTY. SCATTERED SHOWERS WILL OCCUR SUNDAY IN MOIST NORTHWESTERLY FLOW ON THE BACKSIDE OF THE UPPER LOW. ANOTHER CLOSED LOW WILL MOVE INTO UTAH ON MONDAY WITH INCREASING LARGE SCALE ASCENT BY THE LATE AFTN AND EVENING OVER SOUTHEAST WY.
953 PM PDT SAT APR 23 2016 Unsettled and cooler weather Sunday and Monday, and again midweek. After weak ridging provided dry but cooler than normal max temps on Sat. A trough over the Pacific Northwest will deepen over the region tonight and Sunday and may bring some showers to the mountains. The center of the trough will be over Central Nevada on Monday and may bring some wrap around moisture and showers to the Sierra Nevada.
WITH LEE-SIDE LOW PRESSURE TAKING SHAPE ACROSS THE ROCKIES. A SHORT WAVE TROUGH IS MOVING ACROSS THE EASTERN SEABOARD. WITH RIDGING BUILDING IN ACROSS THE MISSISSIPPI VALLEY. WITH THE UPPER LEVEL RIDGE TO BUILD IN ACROSS THE OHIO AND TENNESSEE VALLEYS THROUGH SUNDAY. THE RIDGE WILL BEGIN TO BUCKLE. AS A SHORT WAVE TROUGH MOVES ACROSS THE PLAINS. LOWS WILL BE IN THE LOW TO MID 40S. READINGS WILL RANGE FROM THE MID TO UPPER 40S IN THE COOLER EASTERN VALLEYS. TO THE MID TO UPPER 50S ON THE RIDGES. MONDAY ITSELF WILL REMAIN UNDER THE INFLUENCE OF THE MID/UPPER LEVEL RIDGING.
/TONIGHT/ DEEP UPPER LEVEL TROUGH SPINNING OVER THE CENTRAL ROCKIES. SOUTHERLY FLOW TO INCREASE ACROSS THE REGION WITH WAA AHEAD OF THE LOW OVERNIGHT.
1245 AM EDT SUN APR 24 2016 HIGH PRESSURE WILL MOVE EAST ACROSS THE CENTRAL GREAT LAKES TONIGHT AND TO THE MID ATLANTIC COAST BY SUNDAY EVENING. A WARM FRONT WILL LIFT NORTH ACROSS THE AREA SUNDAY AND BE NORTH OF LAKE ERIE BY MONDAY MORNING AND BECOME NEARLY STATIONARY.
A RIDGE OF HIGH PRESSURE OVER THE GREAT LAKES AND ILLINOIS WILL BRING DRY WEATHER AND MOSTLY CLEAR SKIES THROUGH THE REST OF THE WEEKEND AS IT MOVES SLOWLY EAST ACROSS OUR REGION.
1153 PM CDT SAT APR 23 2016 Skies are mostly clear with only a little bit of cirrus coming over the top of the ridge in northern IL. The winds should also keep temps noticeably warmer than last night. Another beautiful spring day is on tap Sunday, although it is expected to be noticeably warmer and breezier than today. These conditions will be provided by strengthening return flow on the back side of upper level/surface ridging.
AN UPPER LEVEL LOW PRESSURE TROF CENTER OVER SOUTHERN IDAHO AND UTAH WILL MOVE EAST TONIGHT BUT CENTRAL AND SOUTHWEST MONTANA WILL REMAIN UNDERNEATH A BROAD AREA OF LOW PRESSURE. THE AIRMASS WILL BE SIGNIFICANTLY COOLER THROUGH THIS PERIOD AND TEMPERATURES WILL DROP BELOW SEASONAL NORMALS SUNDAY AND MONDAY.