Aikyam-Lab/Synoptic-Bench huggingface dataset:
638 AM EDT MON APR 25 2016 DRY AND WARMER WEATHER CAN BE EXPECTED TODAY UNDER HIGH PRESSURE. STRONG WARM ADVECTION IN ADVANCE OF WESTERN GREAT LAKES TROUGH IS EXPECTED TO DRIVE TEMPS 10 TO 15 DEGREES ABOVE THE SEASONAL AVERAGES THIS AFTERNOON. WITHIN FLATTENING UPPER LEVEL RIDGE. WILL USE MOST OF ITS ENERGY TO BREAK THROUGH THE AFOREMENTIONED RIDGE. THE GREAT LAKES TROUGH WILL DIG SOUTHWARD LATE TONIGHT AND ON TUESDAY AND SLOWLY DRAG A SURFACE FRONT THROUGH THE AREA TUESDAY AFTERNOON. A FEW STRONGER ONES ARE POSSIBLE DUE TO THE HIGHLY SHEARED ENVIRONMENT. THIS WILL BRING AN END TO THE SHOWERS AND STORMS AND ALSO USHER IN A COOLER AIR MASS.
LOW PRESSURE OVER SW KANSAS IS ORGANIZING AND ALLOWING FOR MODERATE SOUTHERLY FLOW ACROSS THE AREA.
LOW PRESSURE WILL TRACK ACROSS THE LOWER GREAT LAKES TONIGHT AND CONTINUE MOVING OFF TO THE EAST SOUTHEAST TUESDAY. A COLD FRONT TRAILING THIS LOW WILL SLIDE ACROSS THE REGION TUESDAY AFTERNOON AND EVENING AND THEN STALL JUST SOUTH OF THE AREA THROUGH MID WEEK. A WARM FRONT WILL DEVELOP ACROSS THE LOWER GREAT LAKES TODAY. HOWEVER THE COLD FRONT TRAILING THE LOW WILL SAG SOUTH ACROSS THE REGION TUESDAY AFTERNOON AND EVENING. THERE ARE SOME INDICATIONS THAT CONVECTION AHEAD OF THIS LOW MAY RACE OUT AHEAD OF THIS SYSTEM AND MOVE INTO THE AREA FROM THE NORTHWEST TONIGHT. BUT THE HIGHER CHANCE FOR SHOWERS AND THUNDERSTORMS WILL BE TUESDAY AFTERNOON AND EVENING OUT AHEAD OF THE COLD FRONT. SHEAR LOOKS TO BE MODEST WHERE THE HIGHER INSTABILITY IS EXPECTED ACROSS THE SOUTHERN COUNTIES.
651 AM EDT MON APR 25 2016 DRY HIGH PRESSURE WILL REMAIN IN PLACE ALONG THE CAROLINA COAST TODAY AND SLOWLY SHIFT EAST OFFSHORE TUESDAY.
EXPECT A SLOW CHANGE TO A MIX OF RAIN AND SNOW THROUGH THE NIGHT AS TEMPERATURES SLOWLY DECREASE INTO THE LOW TO MID 30S. WARM FRONT ACROSS SOUTH DAKOTA PROVIDING SOURCE OF THE LIFT ACROSS SOUTH CENTRAL NORTH DAKOTA WHERE ELEVATED CONVECTION CONTINUES TO DEVELOP. WARM FRONT ACROSS NORTH CENTRAL SOUTH DAKOTA GENERATING LIFT TO THE NORTH RESULTING IN ELEVATED CONVECTION ACROSS SOUTH CENTRAL AND FAR SOUTHWEST NORTH DAKOTA THIS EVENING. LATEST WATER VAPOR IMAGERY AND REGIONAL RADAR INDICATIVE OF A LARGE/BROAD MID/UPPER COUNTERCLOCKWISE CIRCULATION EMINATING FROM A VERTICALLY STACKED UPPER LOW OVER SOUTHWEST SOUTH DAKOTA. A MID LEVEL/700MB CLOSED LOW DEVELOPS IN THE FAR SOUTHERN JAMES RIVER VALLEY TONIGHT AND THEN RETROGRADES A BIT TO THE WEST MONDAY.
531 AM EDT MON APR 25 2016 HIGH PRESSURE WILL PUSH OFF THE MID ATLANTIC COAST TODAY. LOW PRESSURE WILL TRACK ALONG THE NEW YORK BORDER TUESDAY. PUSHING A TRAILING COLD FRONT THROUGH PENNSYLVANIA.
420 AM EDT MON APR 25 2016 LOW PRESSURE OVER THE UPPER MIDWEST WILL PUSH EAST AND SPREAD RAIN ACROSS THE AREA LATER TODAY AND ON TUESDAY. A COLD FRONT WILL DROP INTO THE AREA FROM CANADA LATER ON TUESDAY BRINGING DRIER AND COOLER AIR. DVLPG SFC TROF OVER NRN PA WILL BE THE FOCUS FOR MORE CONV PCPN. WITH COOLER AIR DROPPING TEMPS BLO NRML THU MRNG.
The attendant cold front will sag into the area tomorrow morning. Tuesday a vigorous upper level trough will move from the central Rockies into the High Plains. An associated cold front will move into the western Plains with a dry line across central Kansas.
127 AM EDT MON APR 25 2016 WATER VAPOR IMAGERY AND RAP ANALYSIS SHOW CONFLUENT WNW FLOW OVER THE UPPER GREAT LAKES BTWN A NRN STREAM TROF OVER SE CANADA INTO NEW ENGLAND AND LOW AMPLITUDE SRN STREAM RIDGING OVER THE MISSISSIPPI VALLEY AHEAD OF A MID LEVEL LOW CENTERED NEAR RAPID CITY. COLD AIR THAT HAS EXPANDED UNDER THE SE CANADA TROF AND WARM AIR PUSHING INTO THE UPPER MISSISSIPPI VALLEY AHEAD OF SRN STREAM MID LEVEL LOW HAS RESULTED IN A TIGHTENING THERMAL GRADIENT/BAROCLINIC ZONE ACROSS THE UPPER MISSISSIPPI VALLEY/GREAT LAKES. INFLUENCE OF THE SE CANADA TROF IS FCST TO RELAX SOME. FAVORED THE LOW END OF AVBL GUIDANCE. TUE THROUGH NEXT SUN LOOKS COOL AND DRY AS CANADIAN HIGH PRESSURE DOMINATES. LOWS WILL BE NEAR TO BELOW FREEZING.
432 AM EDT MON APR 25 2016 HIGH PRESSURE CENTER IS SITUATED ACROSS THE MOUTH OF THE CHESAPEAKE BAY. THAT INCLUDES LOW PRESSURE. WITH THE MOIST SOUTHERLY FLOW CONTINUING ON THE BACKSIDE OF THE HIGH CENTER.
HOWEVER SOUTHERN MONTANA WILL REMAIN UNDER THE MEAN TROF AXIS AND THUS WILL KEEP BROADBRUSHED CHANCE POPS IN THE FORECAST. BY LATE TONIGHT THE MID LEVEL FLOW AROUND THE LOW WILL PUSH PLAINS MOISTURE INTO EASTERN AND SOUTHERN ZONES FOR A BETTER CHANCE OF WIDESPREAD PRECIPITATION ALONG AND SOUTH OF A SHERIDAN TO MILES CITY LINE THROUGH TUESDAY EVENING. WHILE GENERALLY THE MODELS CONTINUE TO SHOW SEVERAL TROUGHS MOVING THROUGH.
415 AM EDT MON APR 25 2016 LOW PRESSURE OVER THE UPPER MIDWEST WILL PUSH EAST AND SPREAD RAIN ACROSS THE AREA LATER TODAY AND ON TUESDAY. A COLD FRONT WILL DROP INTO THE AREA FROM CANADA LATER ON TUESDAY BRINGING DRIER AND COOLER AIR. DVLPG SFC TROF OVER NRN PA WILL BE THE FOCUS FOR MORE CONV PCPN. WITH COOLER AIR DROPPING TEMPS BLO NRML THU MRNG. HIGH PRESSURE IS EXPECTED TO BUILD BACK OVER THE REGION THROUGH THE WEEKEND. BUT AN INCREASE IN CLOUD COVER AND A GRADUAL LOWERING OF CEILINGS WILL OCCUR TONIGHT WITH THE APPROACH OF A LOW PRESSURE SYSTEM FROM THE WEST.
SKIES ARE MOSTLY CLEAR TO PARTLY CLOUDY WITH TEMPERATURES RANGING IN THE LOWER TO MID 70S ALONG THE ISLAND CHAIN. AN EXTENSIVE RIDGE IS ALIGNED ALONG THE EASTERN UNITED STATES COAST AND THE FLORIDA EAST COAST.
423 AM EDT MON APR 25 2016 DRY AND WARMER WEATHER CAN BE EXPECTED TODAY UNDER HIGH PRESSURE. STRONG WARM ADVECTION IN ADVANCE OF WESTERN GREAT LAKES TROUGH IS EXPECTED TO DRIVE TEMPS 10 TO 15 DEGREES ABOVE THE SEASONAL AVERAGES THIS AFTERNOON. WITHIN FLATTENING UPPER LEVEL RIDGE. WILL USE MOST OF ITS ENERGY TO BREAK THROUGH THE AFOREMENTIONED RIDGE. THE GREAT LAKES TROUGH WILL DIG SOUTHWARD LATE TONIGHT AND ON TUESDAY AND SLOWLY DRAG A SURFACE FRONT THROUGH THE AREA TUESDAY AFTERNOON. A FEW STRONGER ONES ARE POSSIBLE DUE TO THE HIGHLY SHEARED ENVIRONMENT. THIS WILL BRING AN END TO THE SHOWERS AND STORMS AND ALSO USHER IN A COOLER AIR MASS.
140 AM EDT MON APR 25 2016 DRY AND WARMER WEATHER CAN BE EXPECTED TODAY UNDER HIGH PRESSURE. STRONG WARM ADVECTION IN ADVANCE OF WESTERN GREAT LAKES TROUGH IS EXPECTED TO DRIVE TEMPS 10 TO 15 DEGREES ABOVE THE SEASONAL AVERAGES THIS AFTERNOON. WITHIN FLATTENING UPPER LEVEL RIDGE. WILL USE MOST OF ITS ENERGY TO BREAK THROUGH THE AFOREMENTIONED RIDGE. THE GREAT LAKES TROUGH WILL DIG SOUTHWARD LATE TONIGHT AND ON TUESDAY AND SLOWLY DRAG A SURFACE FRONT THROUGH THE AREA TUESDAY AFTERNOON. A FEW STRONGER ONES ARE POSSIBLE DUE TO THE HIGHLY SHEARED ENVIRONMENT. THIS WILL BRING AN END TO THE SHOWERS AND STORMS AND ALSO USHER IN A COOLER AIR MASS.
THE UPPER RIDGE OVER THE REGION WILL FLATTEN A BIT.
SOUTHEASTERLY LOW LEVEL WINDS ARE PREDOMINATE OVER THE PLAINS INTO THE LOWER FOOTHILLS. THE HIGHEST VALUES ARE IN THE MOUNTAINS AND FOOTHILLS AROUND 00Z THIS AFTERNOON.
356 AM CDT MON APR 25 2016 THE SLOW MOVING LOW PRESSURE SYSTEM WAS LOCATED OVER SOUTHEASTERN SOUTH DAKOTA EARLY THIS MORNING. MOST OF THE SHOWER AND THUNDERSTORM ACTIVITY TO THE EAST OF THE LOW HAS DIMINISHED OVERNIGHT. THE LOW WILL TRACK EAST ACROSS SRN MN THIS MORNING AND AM EXPECTING BREAKS IN THE CLOUD COVER IN THOSE AREAS. THE LOW WILL BE TO THE EAST BY THE TIME PEAK DAYTIME HEATING OCCURS. THE LOW WILL SHIFT WELL EAST OF THE AREA TONIGHT. CLOUDS WILL LINGER INTO MUCH OF TUESDAY AS COOLER AIR MOVES SOUTH INTO THE REGION.
603 AM EDT MON APR 25 2016 WARMER AIR WILL SPREAD NORTHEAST INTO OUR AREA AHEAD OF A COLD FRONT. A COLD FRONT WILL MOVE INTO OUR AREA TONIGHT WITH A GOOD CHANCE FOR SHOWERS AND THUNDERSTORMS. THERE IS A MUCH BETTER CHANCE FOR SHOWERS AND STORMS TONIGHT AS LOW LEVEL MOISTURE SURGES NORTHEAST AHEAD OF A COLD FRONT.
is under the influence of a large scale low pressure trough which will hang around through early this weekend. A series of mid level low pressure systems will develop within this trough.
415 AM CDT MON APR 25 2016 MID/UPPER LEVEL LOW RESPONSIBLE FOR YESTERDAY'S STORMS HAS MOVED OFF TO OUR EAST ACROSS THE NORTHERN GULF WATERS.
312 AM PDT MON APR 25 2016 Low pressure will move through western Nevada with a few showers and brisk northwest winds expected this afternoon.
354 AM EDT MON APR 25 2016 DRY AND WARMER WEATHER CAN BE EXPECTED TODAY UNDER HIGH PRESSURE. STRONG WARM ADVECTION IN ADVANCE OF WESTERN GREAT LAKES TROUGH IS EXPECTED TO DRIVE TEMPS 10 TO 15 DEGREES ABOVE THE SEASONAL AVERAGES THIS AFTERNOON. WITHIN FLATTENING UPPER LEVEL RIDGE. WILL USE MOST OF ITS ENERGY TO BREAK THROUGH THE AFOREMENTIONED RIDGE. THE GREAT LAKES TROUGH WILL DIG SOUTHWARD LATE TONIGHT AND ON TUESDAY AND SLOWLY DRAG A SURFACE FRONT THROUGH THE AREA TUESDAY AFTERNOON. A FEW STRONGER ONES ARE POSSIBLE DUE TO THE HIGHLY SHEARED ENVIRONMENT. THIS WILL BRING AN END TO THE SHOWERS AND STORMS AND ALSO USHER IN A COOLER AIR MASS.
348 AM CDT MON APR 25 2016 WEAKENING LOW PRESSURE CONTINUES EAST THIS AM. WITH THE NEXT UPPER TROF LOCATED OVER THE SOUTHERN ROCKIES THIS AM. THE BEGINNING OF THE FORECAST WILL FEATURE A WAVE/TROF MOVING EAST ACROSS THE CENTRAL PLAINS AND THEN WEAKENING AS IT SHEARS E/NE. THE NEXT WAVE/TROF IS COMING UP FAST AND EJECTS INTO THE SOUTHERN HIGH PLAINS THIS WEEKEND.
426 AM EDT MON APR 25 2016 MONDAY THROUGH TUESDAY WILL FEATURE A WARM FRONT TO OUR SOUTH WHICH WILL BE FOCUS FOR CLOUDS AND PRECIPITATION. A HIGH PRESSURE RIDGE NUDGES INTO OUR NORTHERN ZONES TODAY WHILE A WARM FRONT APPROACHES FROM THE SOUTH. SOME AFTERNOON SUNSHINE WILL ALLOW TEMPS TO RECOVER INTO THE LOW- MID 40S FOR MOST SECTIONS. THE CLOSED UPPER LOW ACROSS ERN QUEBEC AND THE CANADIAN MARITIMES THROUGH THE PERIOD -- ALONG WITH MEAN HIGH PRESSURE ACROSS NORTHERN ONTARIO -- WILL REINFORCE NORTHERLY LOW-LEVEL FLOW REGIME ACROSS THE NORTH COUNTRY.
Temperatures warmed up into the low 80s at some locations today with partly cloudy skies. A negatively titled trough will begin to move out across the Central Plains region Tuesday afternoon and evening.
623 AM CDT SUN AUG 21 2016 Drier air continues to filter into the state behind a cold front that is pushing SE through the state. activity developing near a cold front that was progressing SE through the state. Much cooler and less humid conditions will be seen tonight as the drier air continues to filter into the state. The cold front will attempt to lift back north as a warm front on Mon into Mon night.
Slightly cooler than normal temperatures are forecast over the next few days, along with widespread night and morning low clouds. A complex weather pattern is in place over California and surrounding areas early this morning with an upper level high pressure ridge to our north and east and a weak upper low to our southwest. The GFS and NAM had been inconsistent in forecasting both location and timing of isolated convective precipitation, but the latest output from these two models indicate isolated convective precipitation approaching the Sonoma county coast tonight as the upper low moves slowly to the east.
Near the surface, a broad area of high pressure has settled across eastern and much of central Kansas. Tonight won't be as cool as previous nights given the south winds and vertical mixing, with lows in the lower to middle 60s.
/Issued 339 AM CDT SUN AUG 21 2016/ An upper-level trough swinging through the OH/TN Valley region and the associated surface front moving in from the northwest should lead to scattered to numerous showers and storms once again across the forecast area. As the upper-level trough becomes displaced from the front, it will lose forward speed and stall across the CWA on Monday.
632 AM CDT SUN AUG 21 2016 Scattered showers and intermittent thunderstorms have developed across portions of East Texas and North Louisiana, courtesy of a weak cold front settling in across the region. The front will continue to make slow southward progress today, and convection will generally remain confined along and south of the boundary through this afternoon with temperatures expected to be a few degrees cooler compared to yesterday. Highs will range from the mid to upper 80s from north to south, and pops are tapered to reflect the higher chances along and south of I-20 invof the front.
Temperatures had fallen into the mid to upper 70s inland to the lower 80s along the coast. The potential for a few localized downpours will continue within the higher precipitable water values discussed above. keep the pops on the higher side.
Warmer air will continue to advect across the area today as high pressure slides eastward, helping boost temps to near 80 over eastern North Dakota by afternoon. Will maintain idea of a slight chc of thunder in this area 06z-12z tue period and then spread chc into much of nw MN east of the RRV 12z-18z tue as warm front lifts north.
and Monday Dominate weather feature in the short-term will continue to be pronounced upper-level trough axis forecast to steadily progress east across the western Great Lakes today. Lows will fall to a little below normal for a change, generally in the 40s north to the lower 50s elsewhere.
It was much cooler in the areas that have seen some clearing, with Crane Lake coming in at 43 degrees as of 3 AM. Looks like the high pressure will be able to maintain a partly to mostly sunny sky today, with conditions generally becoming mostly sunny across the entire area as the day wears on.
/Issued 246 AM CDT SUN AUG 21 2016/ Drier air continues to slowly filter northeast Oklahoma early this morning behind cold front with unseasonably cool conditions. This will allow low level moisture to surge back north into the region Monday afternoon into Monday night with a chance for scattered showers/thunderstorms as warm front lifts north.
Otherwise, we continue to see a split flow pattern with a weak srn stream jet across SRN CA, AZ, NM and NRN TX with a broad trough in the flow across the Desert SW.
The surface cold front and low level drier air have pushed farther south than previously forecast. Preferred the slightly warmer side of guidance highs today, mainly in the mid to upper 80s, about 4-8 degrees below average. Kept the highest rain chances in southern Oklahoma and north Texas, mainly during the late afternoon and nighttime hours.
/Issued 405 AM EDT SUN AUG 21 2016/ An approaching cold front is expected to move into n GA this afternoon. At the surface a ridge of high pressure will nose into the state bringing slightly drier air into the CWA. however overnight lows will be a little cooler than normal due to the slightly drier air.
1016 AM CDT SUN AUG 21 2016 High pressure continues to slide east with winds gradually returning from the southwest this morning. High pressure is settling over the region this morning with clear skies and light winds. The aforementioned high will move east of the area today with south to southwest winds and warmer temperatures moving in. The heat will build into Monday as southerly winds increase and broad upper level ridging builds over the Dakotas.
Mostly clear skies today and tonight as the high pressure retreats eastward. Winds will come around to the south and highs will reach the low to mid 80s today. Dew points will stay in the mid 50s tonight, but the return flow will restrict temperatures from cooling this low.
844 AM EDT SUN AUG 21 2016 Cooler and less humid air will continue to filter into the region today.
An upper ridge has moved over Northeast Montana to bring sunny skies and warm temperatures for today. Templer Previous Discussion - An upper level ridge over the region will provide northeast Montana with warm and dry weather conditions for the remaining portion of the weekend. A cold front will push through on Monday night. Given the decent trough approaching which should provide upper level support, feel that at least isolated if not widely scattered showers may develop and a thunderstorm cannot be ruled out.
944 AM EDT SUN AUG 21 2016 Low pressure located north of the Great Lakes will depart northeast across Ontario today, pulling a secondary cold front south across the area this evening.
Morning surface analysis showed a cold front draped from near KSHV to KUVA, with regional radars showing SHRA/TSRA ongoing along this frontal boundary.
Upper level ridge will build westward on Monday resulting in diminished chances for showers and thunderstorms.
Otherwise, sightly cooler than normal temperatures are forecast over the next few days, along with widespread night and morning low clouds. A complex weather pattern is in place over California and surrounding areas early this morning with an upper level high pressure ridge to our north and east and a weak upper low to our southwest. The GFS and NAM had been inconsistent in forecasting both location and timing of isolated convective precipitation, but the latest output from these two models indicate isolated convective precipitation approaching the Sonoma county coast tonight as the upper low moves slowly to the east.
Highs in the upper 60s and 70s across the high country also look good. but can't rule a brief heavy rain shower over the high terrain. Should see initiation of convection over the high ridges within the next hour. Weak upper level ridging will occur across Colorado through tonight.
It will be another hot day across South Florida, with high temperatures well into the lower and mid 90s for most areas, and with plenty of sunshine through the early afternoon, heat indices will range from 100-105 degrees for most areas.
/issued 416 AM CDT SUN AUG 21 2016/ (Today and Tonight) The cold front that moved across the area yesterday will remain stationary across the Texas Hill Country today. Temperatures will remain below normal again today, with afternoon highs in the lower and middle 80s. The aforementioned stationary front should begin to lift slowly north as a warm front across the southern half of the CWA this evening and will provide a focus for additional rain chances overnight. (Monday) As the warm front continues to lift north on Monday, the combination of increasing moisture and lift along the warm front may bring scattered showers and a few thunderstorms to the region Monday and Monday evening.
High pressure will then regain control and result in drier, more comfortable conditions through the first half of the week. By all available evidence, the cold front is nearly bi-secting the forecast area from northeast to southwest. It will take a while longer for rain to end across the eastern half of the forecast area as additional waves try to ride north along the higher terrain. The trough axis will push through Sunday night.
(Issued 500 AM CDT SUN AUG 21 2016) Water vapor satellite animation confirms the presence of an amplifying mid-tropospheric trough digging southeastward through the Great Lakes/upper Midwest this morning. Fairly widespread showers and a few thunderstorms have developed within the warm/moist advection regime -- with ascent associated with a weak vorticity maxima approaching the region from the lower MS valley likely enhancing the coverage of this activity.
Some mid to high level clouds continue to slide down the front of the ridge from Manitoba/Saskatchewan into Northern/Central North Dakota. Expect these to gradually push east as ridge builds eastward. Current surface analysis places high pressure through the plains. Upper level analysis shows trough over the western Great Lakes into the midwest, while broad ridge builds over the west. quiet weather continues as ridge builds into the area. Upper low moves over the Canadian Rockies on Monday with ridge amplifying ahead of it.
Upper level trough will pivot across the region today brining scattered cloud cover to the area. High pressure builds into the region tonight providing clear skies.
/issued 521 AM CDT SUN AUG 21 2016/ The cold front that raced through the area early yesterday morning was stationary over the Rio Grande to San Antonio to Austin area this morning. To the south, a modest trough axis will bring SLY flow across West Texas as it slowly translates eastward.
Highs much cooler today in the mid to upper 70s and breezy NW winds 10-15 mph beginning to slow late in the afternoon. Lows tonight will be cooler, in the mid 50s.
1232 PM EDT SUN AUG 21 2016 Cooler and less humid air will continue to filter into the region today.
Will maintain idea of a slight chc of thunder in this area 06z-12z tue period and then spread chc into much of nw MN east of the RRV 12z-18z tue as warm front lifts north.
1038 AM EDT SUN AUG 21 2016 Aviation section updated It will be cooler and dry today as a cold front over western Ohio and Kentucky continues east and an upper trough moves east across the great lakes.
A potent upper level low over western British Columbia will move south today and bring a dry cold front through the region late tonight into Monday morning as the trough moves into southern Alberta.
944 AM EDT SUN AUG 21 2016 Drier and cooler weather will move into the region today in the wake of a cold front. High pressure will then settle across the Ohio Valley by Monday.
626 AM CDT SUN AUG 21 2016 High pressure is settling over the region this morning with clear skies and light winds. The aforementioned high will move east of the area today with south to southwest winds and warmer temperatures moving in. The heat will build into Monday as southerly winds increase and broad upper level ridging builds over the Dakotas.
It will be cooler and dry today as a cold front over western Ohio and Kentucky continues east and an upper trough moves east across the great lakes.
628 AM CDT SUN AUG 21 2016 Some mid to high level clouds continue to slide down the front of the ridge from Manitoba/Saskatchewan into Northern/Central North Dakota. Expect these to gradually push east as ridge builds eastward. Current surface analysis places high pressure through the plains. Upper level analysis shows trough over the western Great Lakes into the midwest, while broad ridge builds over the west. quiet weather continues as ridge builds into the area. Upper low moves over the Canadian Rockies on Monday with ridge amplifying ahead of it.
Cold front has made it south of I-40 with northerly wind shifts noted at BNA and CKV. Cold front will switch winds from southwest/west to northwest/north later this morning with northerly winds continuing through the rest of the TAF period.
A stalled boundary and weak upper trough continue to allow numerous showers and thunderstorms to develop. The focus for shower and thunderstorm development shifts back the west tonight as the low-level jet sets up in this region. The subtropical ridge over the eastern Gulf of Mexico will begin to build west on Monday.
with high pressure continuing to shift out over the Central/Southern Plains. H5/H7 ridging over the southern portion of the country. w/ models bringing an upper low eastward over the northern tier states.
/Today/ Forecaster Confidence = High A large upper trough continues to pivot through the upper Mississippi River valley with Iowa now residing in an area of upper level height rises and broad subsidence. Weak warm air advection aloft combined with plenty of sunshine should allow readings to warm 3 to 4 degrees from yesterday with highs in the low 70s north and the middle to upper 70s central and south.
1111 AM CDT SUN AUG 21 2016 A cold front is still located from near Toledo Bend Dam to near Monroe, LA. /issued 632 AM CDT SUN AUG 21 2016/ Scattered showers and intermittent thunderstorms have developed across portions of East Texas and North Louisiana, courtesy of a weak cold front settling in across the region. The front will continue to make slow southward progress today, and convection will generally remain confined along and south of the boundary through this afternoon with temperatures expected to be a few degrees cooler compared to yesterday. Highs will range from the mid to upper 80s from north to south, and pops are tapered to reflect the higher chances along and south of I-20 invof the front.
1038 AM EDT Sun Aug 21 2016 A cold front over the Ohio River valley will move through the Mid-Atlantic this afternoon into the evening.
632 AM CDT SUN AUG 21 2016 A cool start across the area under influence of high pressure. Models have a strong consensus to development of pressure trough downstream of the Buffalo ridge, suggesting winds should see a bit of ridge enhancement by late night along with slowly rising temps.