Aikyam-Lab/Synoptic-Bench huggingface dataset:
138 AM EDT Fri May 29 2020 Severe storms are possible this afternoon with the passage of a cold front. After sunrise an upper-level trough and its associated cold front are expected to be in the vicinity of Indiana. Once the trough and cold front become completely in phase with each other, strong storms are anticipated to develop and continue into the evening. By midnight, showers and storms will exit to our east as the cold front moves through central PA. High pressure building over the Great Lakes will return quiet, dry weather Saturday evening. The deep trough over New England will slow nudge east as the stout ridge over the central CONUS moves east.
Surface cold front slowly moved eastward across the state today, with a large area of heavy rain associated with the front. Further west, dry air continues to advect in behind the cold front, with clearing skies visible across far northwest WI. The morning will start out clear, and then an upper level trough and mid-level short wave swing through and will create some instability clouds in the late morning through the afternoon. Otherwise, cooler and much less humid air will be in place.
An upper level low over Arkansas region will continue to slowly shift northeastward tonight into Friday and will merge into an upper level trough that is moving eastward across Northern CONUS. As the low gets pulled into it, the southern end of the trough will tilt southwestward, reaching into the Central Texas area Friday morning. Environment along the northern sections of the CWA will not be as favorable for rain development as the southern sections, thanks to the incoming dry air and high pressure building over North and Central Texas.
/Issued 1154 PM CDT Thu May 28 2020/ /Friday through Saturday Night/ North Texas will be on the back side of a departing upper trough on Friday with drier low and mid level air continuing to filter into the region. Mid level ridging will continue to build across the Southern Plains Friday night through Saturday with surface winds gradually becoming more easterly by Saturday afternoon. Another mostly sunny day is expected with highs perhaps a degree or two warmer than Friday. An upper level ridge currently across the Desert Southwest will expand eastward as a trough digs into the eastern Pacific Ocean. The expanding trough will lead to subsident air throughout much of the week.
314 AM EDT Fri May 29 2020 Severe storms are possible this afternoon with the passage of a cold front. After sunrise an upper-level trough and its associated cold front are expected to be in the vicinity of Indiana. Once the trough and cold front become in phase with each other, severe storms are anticipated to develop and continue into the evening. By midnight, showers and storms will exit to our east as the cold front moves through central PA. High pressure building over the Great Lakes will return quiet, dry weather Saturday evening.
An upper level trough and associated sfc cold front will continue to make slow progress southeastward through Friday night. Showers and thunderstorms will increase in coverage early this morning as the upper trough continues to advance eastward. The sfc front moves south of the area late tonight as the upper trough moves to the east of the area. Highs on Friday will be a few degrees cooler due to the clouds and rain with temps in the low to mid 80s in most areas.
323 AM CDT Fri May 29 2020 A long wave upper level trof was moving through the forecast area early this morning. The upper trof will be moving over this area and be accompanied by additional cold air advection. Elsewhere, cold, dry, high pressure begins to build into the region. Some sprinkles/showers are possible over Iron County in the early afternoon as the cold air works over the warmer waters of Lake Superior to enhance the probability. High pressure settles overhead.
240 AM CDT Fri May 29 2020 The upper low that has impacted our weather for the last several days has finally moved east and merged into a trough located over the MS River valley. This leaves northwest flow over our area ahead of a 500mb ridge in the western US. At the surface, high pressure is moving into the Plains out of the eastern Rockies. A frontal boundary in the northeast corner of the state will keep temperatures cooler in the low 70s, but further southwest has potential to reach near 80 degrees.
316 AM EDT Fri May 29 2020 Unsettled conditions expected into the weekend as an upper trough approaches from the west.
323 AM CDT Fri May 29 2020 The weather pattern aloft reflected a couple of closed lows in the Pacific. Upper ridging extended from the desert southwest north over the Rockies, with northwest flow across the plains states, with a trough to the east from Ontario thru the Ohio Valley to the Gulf Coast. At the surface, high pressure was building southeast from the Dakotas across the plains states. Today we will see the western upper ridge build north and east toward the plains with warmer air beginning to advect east of the Rockies/High Plains. For temperatures Saturday, we should see quite the range in highs with upper 60s forecast in our northeast zones where clouds/precip will be a factor, with much warmer low 80s forecast for our sw counties in north central Kansas where dry weather and a warmer airmass resides.
Slow moving upper low, centered just north of Little Rock, will lose definition, and will accelerate east-northeastward early in this period. Widely scattered, weak convection still possible across mainly eastern sections Friday afternoon, before the upper low moves completely east of the state.
High pressure aloft over Utah on Friday will produce hot, mid-summer conditions. This high pressure will move east of the area Saturday, with hot and breezy conditions along with scattered afternoon and evening showers and thunderstorms through the weekend. A strong ridge encompassing much of the Interior West remains in place this evening, maintaining a very warm airmass across the forecast area. Daytime heating allowed isolated convection to form over the higher terrain of southern Utah as well as eastern Nevada, however this activity has quickly dissipated this evening. This ridge axis will shift slightly eastward Friday allowing for an increase in high based moisture, while maintaining a very warm airmass across the area.
317 AM CDT Fri May 29 2020 A weak warm front should lift into ncntl Nebraska today. An upper level disturbance across Oregon this morning should run the ridge across the Rockies and move through wrn and ncntl Nebraska late tonight and early Saturday.
Very strong high pressure will dominate the weather this week with well above normal temperatures continuing in northern Arizona. Satellite imagery shows scattered clouds across northern Arizona evaporating this evening under the subsidence of the high pressure ridge. These hot conditions will persist through Friday as strong high pressure is in place across the southwest United States. An Excessive Heat Warning remains in effect through Friday for the lower elevations of the Grand Canyon and southern Yavapai county.
However, additional showers and storms may begin to approach the coast by morning, as another slug of deep moisture is pulled north by the approaching longwave trough. With the long wave trough axis over the area and a slow moving cold front in the vicinity, Friday and Saturday will remain unsettled with more clouds than sun and scattered to numerous showers and thunderstorms expected.
1050 PM MDT Thu May 28 2020 19z surface analysis had high pressure over eastern MT nosing into the CWA. Friday, upper ridge over the western CONUS edges eastward. Lee trough/warm front develops under warm air advection regime from central MT into central WY. Saturday, not much change expected as heights continue to build into the CWA and thermal ridge inches eastward.
Overnight lows still look like the lower 60s for most areas by sunrise. Will go ahead and update zones in the next hour to remove the higher pops from earlier. A cold front will sweep across Middle Tennessee mainly during the afternoon.
Another round of convection is forecast to develop over the higher terrain this afternoon and move slowly toward highlands/valleys into the evening hours. High temperatures will be near to about 10 degrees warmer than normal. Isolated to scattered showers and thunderstorms will favor the higher terrain in the afternoons but will drift into the lower elevations late in the day and during the early evenings. Satellite imagery this afternoon shows the same blocking pattern in place as an upper-level high continues to build over the desert SW. The high begins to make some easterly progress on Friday by centering itself over the NM/AZ border.
321 AM CDT Fri May 29 2020 Short Term [Today and Saturday] This morning's water vapor satellite imagery shows the upper level trough remains centered over the Mississippi River Valley. At the surface, a weak cold front will progress southward through the day. Given that upper level support for ascent should be decreasing as the trough axis shifts east of the region, convection will likely not be as widespread as it has been the past several days. This will result in drier and warmer conditions for most of the CWA although an isolated shower or thunderstorm will be possible across southeastern Acadiana during the afternoon hours.
The main influence on our weather is a slow-moving 500 mb closed low over Arkansas. On Friday, a surface cold front will move southeast across most of our region in the morning. High pressure passing to the north of our region will produce a light north wind, becoming northeast with time.
356 AM CDT Fri May 29 2020 A backdoor cold front is ushering in cool air and a broken deck of mid clouds across far northeastern South Dakota and west central Minnesota at this hour. Clear skies dominate the region otherwise, as high pressure builds in. Dry conditions continue today, as high pressure remains in control.
344 AM CDT Fri May 29 2020 (Today and Tonight) A dry forecast is in store today as an upper level ridge begins to build in from the west.
or what is left of the upper closed low that has given the area persistent rainfall over the past several days. Behind this trough. a new cold front will drop SE through the state through this afternoon and evening.
1130 PM MDT Thu May 28 2020 The upper level ridge remains in place over the Great Basin and will slowly move east with time. The ridge axis moves further east, over Colorado, allowing for higher maximum temperatures and more moisture in the atmosphere. Per ensemble and deterministic guidance, moisture over the higher terrain is going to be increasing during the weekend, with the max PWAT values occurring on Saturday. Northwest flow will be over the region leading to storms moving southeast over the higher terrain.
427 AM EDT Fri May 29 2020 Under partly cloudy skies and a east to southeast winds of 5 to 10 mph, temperatures are in the lower 80s away from any rainfall along the island chain.
1013 PM MDT Thu May 28 2020 Dry weather is expected today as a a building ridge begins to slide into the area from the west. Temperatures will be about 5 degrees warmer this afternoon west of the Divide. For Friday, the ridge will continue to build into the area with continued warming temperatures.
The remainder of the showers continue to slowly push east early this morning with the cold front and should end for our southeastern lakefront counties in the next hour or so. Overall, drier and a bit cooler conditions are expected across southern WI today and Saturday as high pressure builds into the Upper Midwest through Saturday. Cooler conditions expected overnight with lows dipping into the mid to upper 40s. A cool night is expected Saturday night, with lows falling into the low to mid 40s.
A cold front will continue to approach the area today. AD Chattanooga Airport, TN 83 63 81 59 80 / 60 50 10 0 0 Knoxville McGhee Tyson Airport, TN 83 62 80 57 77 / 50 50 20 0 0 Oak Ridge, TN 82 61 80 56 77 / 60 50 10 0 0 Tri Cities Airport, TN 81 60 77 53 73 / 50 50 30 0 10.
204 AM CDT Fri May 29 2020 The increasing influence of mid-level ridging and gulf moisture being cut-off signals an anomalously quiet wx period through at least Mon AM. As the ridge builds in from the w the axis and center will remain to the north and that will favor easterly mid- level flow and thus an absence of the lee trof.
Afternoon highs on Friday will be at or slightly cooler than usual late May highs.
248 PM EDT SAT SEP 12 2015 LATEST SURFACE ANALYSIS SHOWS A MUCH ADVERTISED COLD FRONT NEAR A COLUMBUS TO MACON TO LOUISVILLE LINE AND SLOWLY PUSHING SOUTHWARD. STRONG VORTICITY TRAVERSING THROUGH THE BASE OF A DEEPENING UPPER TROUGH ACROSS THE OHIO AND TN VALLEYS WILL SQUEEZE OUT SUFFICIENT MOISTURE TO PRODUCE PERIODS OF SCATTERED TO BROKEN MID LEVEL CLOUDINESS BEHIND THE FRONT THROUGH THIS EVENING. A MUCH COOLER AIR MASS WILL SPREAD OVER THE REGION.
BUILDING RIDGING INFLUENCES SFC/ALOFT SHOULD PROVIDE FOR SKC CONDITIONS WITH SFC NWLY WINDS 5-10KTS AT ALL TAF SITES THRU 13/18Z. /ISSUED 718 AM CDT SAT SEP 12 2015/ STRONG IMPULSE IN BASE OF DEEP UPPER TROUGH EXPECTED TO SWING ACROSS THE REGION EARLY TONIGHT. BEHIND TROUGH. /ISSUED 256 AM CDT SAT SEP 12 2015/ BROAD UPPER TROUGH OVER EASTERN U. HAS BROUGHT MUCH COOLER WEATHER THIS WEEKEND TO THE MID STATE. COLD FRONT. CHARACTERISTIC OF EARLY AUTUMN NOW MOVING INTO EASTERN TENNESSEE WITH MUCH COOLER CANADIAN AIR FILTERING IN FROM THE NORTHWEST. 00Z UPPER AIR SOUNDINGS DO SHOW LIMITED MOISTURE IN THE MID WEST BUT SHORT WAVES HAVE A WAY OF FINDING IT ONCE NEARING THE BASE OF A TROUGH.
316 PM EDT SAT SEP 12 2015 AN UPPER TROUGH WILL KEEP US IN A COOL AND UNSETTLED WEATHER PATTERN THROUGH THE REMAINDER OF THE WEEKEND.
THE COLD FRONT HAS PUSHED EAST AND SOUTH OF THE AREA AND NORTHERLY WINDS HAVE FOLLOWED IN ITS WAKE. THE EXTENSIVE MID TO HI LEVEL COVER ASSOCIATED WITH THE UPPER LEVEL TROUGH SHOULD PUSH OUT OF THE AREA DURING THE EVENING WITH FAIR SKIES DEVELOPING LATER TONIGHT. CLEARING SKIES AND LOW LEVEL COLD AIR ADVECTION WILL CREATE OVERNIGHT LOWS IN THE LOW TO MID 50S AT INTERIOR SITES AND UPPER 50S AND 60S NEAR THE COAST. COOLER AND DRIER AIR WILL ADVECT INTO THE AREA OVERNIGHT.
WESTERLY OR ONSHORE FLOW WILL PREVAIL ACROSS THE AREA THROUGH SUNDAY FOR COOLER CONDITIONS.
517 PM EDT SAT SEP 12 2015 A COLD FRONT WILL MOVE THROUGH THE FORECAST AREA TONIGHT. DRIER AND COOLER HIGH PRESSURE WILL DOMINATE THROUGH AT LEAST THE MIDDLE OF THE WEEK. THE APPROACHING COLD FRONT WILL MOVE THROUGH THE FORECAST AREA THIS EVENING. DRY HIGH PRESSURE WILL MOVE INTO THE FORECAST AREA SUNDAY AND SUNDAY NIGHT. BELOW NORMAL TEMPERATURES ARE EXPECTED WITH HIGHS NEAR 80 AND LOWS SUNDAY NIGHT IN THE LOWER TO MID 50S. A TIGHT PRESSURE GRADIENT BEHIND THE COLD FRONT WILL ALLOW FOR GUSTY WINDS SUNDAY MORNING RANGING FROM 10 TO 15 MPH. THESE COOLER TEMPERATURES WILL BE THE COOLEST WE HAVE EXPERIENCED SINCE MAY. HIGH PRESSURE WILL CONTINUE TO DOMINATE THE REGION THROUGH THE EARLY PART OF THE WEEK. EXPECT TEMPERATURES NEAR OR COOLER THAN NORMAL WITH MOSTLY CLEAR SKIES.
WITH DRYING CONDITIONS BY THE AFTERNOON AS A COLD FRONT MOVES ACROSS THE AREA.
Today will be the last day of near record temperatures since high pressure will weaken beginning on Sunday. High temperatures are forecast to be 5-10 degrees cooler on Sunday than Saturday, and with the cooler temperatures will come gusty winds Sunday afternoon.
245 PM CDT SAT SEP 12 2015 HIGH PRESSURE BUILDING OVER THE STATE FROM THE NORTH PUSHING DRIER AIR OVER SETX. DRIER AIR MIXING DOWN THIS AFTERNOON AND DEWPOINTS HAVE FALLEN TO THE LOWER 50S ACROSS THE NORTH AND MID 60S THROUGH HOUSTON. A VERY PLEASANT DAY OUT THERE ACROSS SOUTHEAST TEXAS WITH THE DIFFUSE COLD FRONT MOVING INTO THE GULF. UPPER RIDGING OVER THE WESTERN U.
HIGH PRESSURE WILL BREAK DOWN LATE SUNDAY AS A TROUGH MOVES INTO THE PACIFIC NORTHWEST.
354 PM CDT SAT SEP 12 2015 (Tonight and Sunday) A cold front that passed through the area earlier is now located well south of the forecast area early this afternoon with current temperatures around 10 degrees cooler than this time yesterday. With surface winds swinging back to the south overnight, looking for morning temperatures tomorrow only a few degrees cooler than this morning over most of the forecast area. Expecting slightly warmer temperatures over most of the Big Country associated with some increasing clouds tonight. By tomorrow afternoon the upper ridge will begin to build back over the area with afternoon highs warming back into the lower 90s under mostly sunny skies. High pressure aloft dominates Texas for the next 7 days.
A MINOR TROUGH STILL APPARENT ON WATER VAPOR ACROSS ERN CO THIS AFTN COULD AID IN GENERATING SOME SHOWERS EARLIER THAN EXPECTED TONIGHT IN OUR NERN COUNTIES. SUNDAY WILL SEE A CHANGE TO MUCH WARMER SW WINDS FROM THE SURFACE TO 700 MB WHILE SOME NW FLOW IS RETAINED FROM 500 MB AND ABOVE. UPPER LEVEL FLOW WILL WILL BE RATHER WEAK AS WELL WITH THE AXIS OF THE MAIN RIDGE TO THE NORTH AND WEST OF THE REGION.
1222 PM CDT SAT SEP 12 2015 Surface ridging dominating the area this morning with a cool and dry air mass continuing to work its way into the area. Expect lows to continue dropping through the morning into the middle to upper 40s across the entire area, with the exception of the heart of the KC metro, where urban heat island should keep lows in the lower 50s.
321 PM CDT SAT SEP 12 2015 HIGH PRESSURE BUILDING IN ACROSS THE REGION FROM THE NORTH. BRINGING PLEASANT COOLER TEMPERATURES AND MOSTLY SUNNY SKIES TODAY.
537 PM CDT SAT SEP 12 2015 FOR 00Z TAFS /ISSUED 1058 AM CDT SAT SEP 12 2015/ LARGE UPPER LOW CURRENTLY OVER THE GREAT LAKES WHILE A COLD FRONT HAS PUSHED SOUTH OF TN VALLEY.
253 PM EDT SAT SEP 12 2015 UPPER LEVEL LOW PRESSURE WILL PUSH SLOWLY TOWARD THE REGION TODAY ALONG WITH INCREASING CLOUDS AND THE THREAT OF RAIN BY DAY'S END, ESPECIALLY ACROSS NORTHERN NEW YORK.
AFTERNOON HIGH TEMPS MAY BE A DEGREE OR SO WARMER THAN PREVIOUSLY FORECASTED PER NOT AS MUCH CLOUD COVERAGE OCCURING AS PREVIOUSLY ANTICIPATED. BUILDING RIDGING INFLUENCES SFC/ALOFT SHOULD PROVIDE FOR SKC CONDITIONS WITH SFC NWLY WINDS 5-10KTS AT ALL TAF SITES THRU 13/18Z. /ISSUED 718 AM CDT SAT SEP 12 2015/ STRONG IMPULSE IN BASE OF DEEP UPPER TROUGH EXPECTED TO SWING ACROSS THE REGION EARLY TONIGHT. BEHIND TROUGH. /ISSUED 256 AM CDT SAT SEP 12 2015/ BROAD UPPER TROUGH OVER EASTERN U. HAS BROUGHT MUCH COOLER WEATHER THIS WEEKEND TO THE MID STATE. COLD FRONT. CHARACTERISTIC OF EARLY AUTUMN NOW MOVING INTO EASTERN TENNESSEE WITH MUCH COOLER CANADIAN AIR FILTERING IN FROM THE NORTHWEST. 00Z UPPER AIR SOUNDINGS DO SHOW LIMITED MOISTURE IN THE MID WEST BUT SHORT WAVES HAVE A WAY OF FINDING IT ONCE NEARING THE BASE OF A TROUGH.
657 PM EDT SAT SEP 12 2015 AN UPPER TROUGH WILL KEEP US IN A COOL AND UNSETTLED WEATHER PATTERN THROUGH THE REMAINDER OF THE WEEKEND.
COOLER AIR WILL CONTINUE TO PUSH IN BEHIND THE DEPARTED COLD FRONT. AND A SHARP UPPER TROUGH MOVE ACROSS THE AREA TONIGHT BEFORE PULLING NORTHEAST. HIGH PRESSURE WILL PROVIDE US WITH QUITE A STRETCH OF DRY WEATHER.
HIGH PRESSURE WITH LIGHT SURFACE WINDS IS ALLOWING SMOKE TO DRIFT IN FROM THE WEST. A LOW PRESSURE SYSTEM WILL BRING SOME SHOWERS AND BETTER WINDS STARTING SUNDAY.
146 PM EDT SAT SEP 12 2015 UPPER LEVEL LOW PRESSURE WILL PUSH SLOWLY TOWARD THE REGION TODAY ALONG WITH INCREASING CLOUDS AND THE THREAT OF RAIN BY DAY'S END, ESPECIALLY ACROSS NORTHERN NEW YORK.
256 PM EDT SAT SEP 12 2015 AN APPROACHING COLD FRONT WILL MOVE THROUGH THE FORECAST AREA THIS EVENING.
312 PM MDT SAT SEP 12 2015 STRONG UPPER LEVEL RIDGING WILL REMAIN OVER COLORADO THROUGH SUNDAY. A LEE-SIDE TROUGH WILL INTENSIFY THROUGH THE AFTERNOON AS LOW AND MID LEVEL TEMPERATURES WARM UP. SKIES WILL BE SUNNY AND HIGHS ACROSS THE PLAINS WILL REACH INTO THE LOWER 90S. SUBSIDENT FORCING UNDER THE RIDGE COMBINED WITH THE DRY AIRMASS IN PLACE SHOULD BE ENOUGH TO KEEP THE FORECAST AREA NEARLY CLOUD-FREE THROUGH THE NEXT 24 HOURS.
104 PM MDT SAT SEP 12 2015 HIGH PRESSURE WILL BE BREAKING DOWN THIS WEEKEND WITH FLOW ALOFT BECOMING BRIEFLY ZONAL OVER THE FORECAST AREA.
BUT AS THE CENTER OF AN AREA OF HIGH PRESSURE SLIDES SOUTH OF THE REGION THE LAKE EFFECT RAIN WILL SLIDE TO THE EAST SIDE OF LAKE MICHIGAN ON SUNDAY. (SUNDAY NIGHT THROUGH SATURDAY) AS THE UPPER LEVEL TROF LIFTS OUT OF THE NORTHEAST AT THE BEGINNING OF THE PERIOD WITH HEIGHT THEN BUILDING INTO MIDWEEK. BY THU A 5H WAVE TROF TRAVERSES THE NORTHERN PLAINS INTO THE GTLKS REGION WHILE A WEAK SURFACE FRONT PUSHES INTO THE SOUTHERN GTLKS. AS A SECOND 5H WAVE TROF MOVES TOWARD THE GTLKS. PRIMARY FTR OF NOTE ALOFT IS SW TROUGH WRAPPING SOUTH ACRS WRN IL.
414 PM CDT SAT SEP 12 2015 LITTLE SHORT TERM CONCERN AS HIGH PRESSURE RETREATS OVER THE AREA. ANY CUMULUS WILL DISSIPATE THIS EVENING LEAVING SOME HIGH CLOUDS FROM TIME TO TIME INTO SUNDAY AS SOME MOISTURE TOPS THE WESTERN CONUS RIDGE AND SPILLS SOUTHEAST. SUNDAY SHOULD BE WARMER WITH S/SW WINDS INCREASING DURING THE LATE MORNING/AFTERNOON MAKING FOR SOME BREEZY CONDITIONS.
RIDGE OF HIGH PRESSURE OVER THE REGION WILL BEGIN TO BREAK DOWN ON SUNDAY. EXPECT BREEZY CONDITIONS ON SUNDAY AS THE UPPER RIDGE BREAKS DOWN.
359 PM EDT SAT SEP 12 2015 HIGH PRESSURE WILL MOVE EAST OF THE REGION TONIGHT.
MODELS ARE IN GOOD AGREEMENT WITH HIGH PRESSURE SLIDING SOUTHEAST ACROSS THE REGION TONIGHT. THE HIGH WILL BRING QUIET WEATHER TO THE AREA DURING THIS TIME. IN THE LOWER TO MID 40S IN MOST AREAS. COULD GET A BIT COOLER IN LOW SPOTS.
624 PM EDT SAT SEP 12 2015 HIGH PRESSURE WILL MOVE EAST OF THE REGION TONIGHT.
1234 PM CDT SAT SEP 12 2015 FOR 18Z TAFS /ISSUED 1058 AM CDT SAT SEP 12 2015/ LARGE UPPER LOW CURRENTLY OVER THE GREAT LAKES WHILE A COLD FRONT HAS PUSHED SOUTH OF TN VALLEY. A COLD FRONT THAT MOVED THROUGH DURING THE OVERNIGHT PERIOD HAS MOVED WELL SOUTH OF THE AREA.
151 PM EDT SAT SEP 12 2015 AN UPPER TROUGH WILL KEEP US IN A COOL AND UNSETTLED WEATHER PATTERN THROUGH THE REMAINDER OF THE WEEKEND.
LOW LEVEL MOISTURE AND INSTABILITY WILL BE ENOUGH FOR A POSSIBLE SHOWER AND THUNDERSTORM CHANCE ACROSS NW KANSAS ALONG A LEE TROUGH. A WARMER ELEVATED MIXED LAYER ON WED AFTERNOON. THE LEE TROUGH OVER NW KS WILL VENTURE FURTHER EAST INTO THE FORECAST AREA FOR THIS TIME FRAME. HIGH PRESSURE WILL CONTINUE TO SLIDE TO THE EAST THIS AFTERNOON AND OVERNIGHT. SOME GUSTS WEST OF INTERSTATE 135 COULD BE IN THE LOWER 20 KNOT RANGE.
AND LET TEMPERATURES FALL INTO THE LOWER 70S AREAWIDE.
HIGH PRESSURE IS DRIFTING SOUTHEAST TOWARD THE SRN/SE STATES. THE PARENT COLD/SHARP UPPER TROUGH TO THE COLD AIR IS SLIDING EAST. LOW TEMPERATURES IN THESE AREAS WILL FALL INTO THE LOWER TO MIDDLE 30S WITH PATCHY/AREAS OF FROST DEVELOPING. EVENTUALLY THIS RIDGING IS ESTABLISHED OVER THE EASTERN HALF OF THE COUNTRY.
354 PM EDT SAT SEP 12 2015 A COLD FRONT WILL MOVE THROUGH THE FORECAST AREA TONIGHT. DRIER AND COOLER HIGH PRESSURE WILL DOMINATE THROUGH AT LEAST THE MIDDLE OF THE WEEK. THE APPROACHING COLD FRONT WILL MOVE THROUGH THE FORECAST AREA THIS EVENING. DRY HIGH PRESSURE WILL MOVE INTO THE FORECAST AREA SUNDAY AND SUNDAY NIGHT. BELOW NORMAL TEMPERATURES ARE EXPECTED WITH HIGHS NEAR 80 AND LOWS SUNDAY NIGHT IN THE LOWER TO MID 50S. A TIGHT PRESSURE GRADIENT BEHIND THE COLD FRONT WILL ALLOW FOR GUSTY WINDS SUNDAY MORNING RANGING FROM 10 TO 15 MPH. THESE COOLER TEMPERATURES WILL BE THE COOLEST WE HAVE EXPERIENCED SINCE MAY. HIGH PRESSURE WILL CONTINUE TO DOMINATE THE REGION THROUGH THE EARLY PART OF THE WEEK. EXPECT TEMPERATURES NEAR OR COOLER THAN NORMAL WITH MOSTLY CLEAR SKIES.
329 PM CDT SAT SEP 12 2015 A WEAK AREA OF LOW PRESSURE CROSSING WELL NORTH OF THE REGION WILL PRODUCE GUSTY DOWNSLOPE WINDS ON THE EASTERN SIDE OF THE PRAIRIE COTEAU TONIGHT. A STRONGER LOW PRESSURE SYSTEM.
152 PM EDT SAT SEP 12 2015 AN UPPER LEVEL LOW WILL PROVIDE MUCH COOLER TEMPERATURES THIS WEEKEND.