Aikyam-Lab/Synoptic-Bench huggingface dataset:
/ISSUED 316 PM CDT TUE AUG 11 2015/ WEAK COLD FRONT CONTINUES TO SLOWLY DRIFT SWD ACROSS THE REGION THIS AFTN. CONVECTION HAS HAD A DIFFICULT TIME SUSTAINING ITSELF LIKELY DUE TO THE INFLUENCE OF THE UPPER RIDGE TO OUR W. DESPITE THE PASSAGE OF THE COLD FRONT. NLY FLOW ALOFT AND RELATIVELY COOLER TEMPS WILL CHARACTERIZE THE REMAINDER OR THE WORK WEEK AND INTO THE WEEKEND. AS A PIECE OF ENERGY ASSOCIATED WITH THE UPPER TROF CURRENTLY OVER THE ERN U. THIS UPPER LOW IS FCST TO BEGIN TO WORK ITS WAY SWWD AROUND THE PERIPHERY OF THE RIDGE AND ALONG THE NRN GULF COAST THROUGH INTO EARLY NEXT WORK WEEK.
801 PM EDT TUE AUG 11 2015 A COLD FRONT WILL CROSS OUR REGION THIS EVENING AND MOVE OUT OVER THE ATLANTIC WATERS.
extensive cloud cover may again muddle the high temperature forecast, as occurred today and temperatures should be at or below normal. The upper ridge over the central and southern rockies will continue to amplify, resulting in vorticity disturbances shifted farther north across the northern plains. however, the GFS and ECMWF show a vigorous wave during the weekend moving through the northern states, effectively flattening the upper ridge and returning zonal flow aloft to the central high plains. this setup will result in low pressure across western kansas just ahead of an approaching baroclinic zone/frontal boundary by early to mid week, and a return to convective chances.
A COLD FRONT WILL PUSH SOUTHEAST THROUGH THE AREA THIS EVENING.
WITH DEW PTS UPSTREAM ACROSS MID TN IN THE LOWER/MID 60S RANGE. RSB /ISSUED 157 PM CDT TUE AUG 11 2015/ VIS SATELLITE IMAGERY DEPICTED THE COLD FRONT FROM JUST NW OF KNOXVILLE TN THROUGH WINCHESTER TN TO NEAR MUSCLE SHOALS AL.
1047 PM EDT TUE AUG 11 2015 A COLD FRONT APPROACHING FROM THE WEST WILL MOVE ACROSS THE MIDLANDS AND CSRA OVERNIGHT. HIGH PRESSURE BUILDING IN FROM THE NORTH WILL BRING DRY WEATHER FOR THE LATTER HALF OF THE WORK-WEEK. AN UPPER TROUGH REMAINS OVER THE EASTERN STATES WITH A COLD FRONT EXTENDING FROM CENTRAL NC INTO THE UPSTATE OF SOUTH CAROLINA. THE CHANCE FOR CONVECTION WILL DIMINISH AS THE COLD FRONT MOVES EAST THROUGH 09Z.
933 PM EDT TUE AUG 11 2015 A COLD FRONT WILL PUSH THROUGH OVERNIGHT. HIGH PRESSURE WILL BUILD OVER THE MIDDLE ATLANTIC REGION ON WEDNESDAY AND REMAIN THERE INTO THE UPCOMING WEEKEND. WEAK COLD FRONT WILL PUSH THROUGH OVERNIGHT BRINGING NORTHWEST FLOW TO THE REGION. MOSTLY DRY AND SLIGHTLY COOLER CONDITIONS EXPECTED ON WEDNESDAY WITH HIGHS REACHING THE LOWER 80S IN MOST LOCATIONS. COLD FRONT EXITS THE CWA BY 12Z WED MORNING WITH HIGH PRESSURE BUILDING IN THE WAKE.
COOL TEMPERATURES ARE FORECAST TO CONTINUE OVER INLAND AREAS THROUGH MIDWEEK AS AN UPPER LEVEL TROUGH REMAINS OFF OF THE WEST COAST. A WARMING TREND WILL COMMENCE LATE IN THE WEEK AND CONTINUE THROUGH THE WEEKEND AS HIGH PRESSURE BUILDS OVER THE SOUTHWESTERN PORTION OF THE COUNTRY. AN UPPER LEVEL LOW IS CENTERED 280 MILES WEST OF CAPE MENDOCINO.
LATEST RAP13 SURFACE ANALYSIS PAINTED AND AREA OF HIGH PRESSURE CENTERED ACROSS THE REGION. SO HAVE INCREASED TEMPS TOWARD THE HIGH END OF GUIDANCE. EXPECT LOCATIONS ALONG THE BUFFALO RIDGE IN WESTERN MN TO REACH 90.
ONSHORE FLOW IS STARTING TO WEAKEN THIS EVENING AS A HIGH PRESSURE SYSTEM CENTERED OVER NORTH TEXAS BUILDS WEST.
911 PM EDT TUE AUG 11 2015 UPPER LEVEL LOW PRESSURE WILL MAINTAIN SOME CLOUDS AND MINIMAL SHOWER CHANCES FOR PARTS OF THE REGION UNTIL HIGH PRESSURE BUILDS LATER WEDNESDAY. WITH COLD NORTHWEST FLOW BEHIND A REINFORCING COLD FRONT UNDER A HIGH AMPLITUDE UPPER TROUGH. LOWER CONVECTIVE THRESHOLDS UNDER THE AFOREMENTIONED UPPER TROUGH.
HIGH PRESSURE ALOFT BUILDING INTO THE REGION FROM THE EAST WILL BRING HOT NEAR RECORD MID AUGUST HIGH TEMPERATURES LATER THIS WEEK WITH AN OVERALL DECREASE IN THUNDERSTORM ACTIVITY. WITH DRY AIR PUSHING IN FROM THE EAST AS HIGH PRESSURE BUILDS IN. OR ALONG THE HIGHER TERRAIN.
THIS EVENING THROUGH WEDNESDAY NIGHT UPPER RIDGING CONTINUES TO DOMINATE THE REGION THROUGH THE SHORT TERM. UPPER RIDGE AXIS PUSHES EAST BRINGING INCREASINGLY SWRLY ACTIVE FLOW TO THE AREA. THE CWA WILL REMAIN JUST WEST OF THE HIGH PRES WITH CONTINUED SRLY FLOW. THIS WILL BRING WARMER TEMPS TO THE AREA WITH HIGHS IN THE UPPER 80S IN THE BLKHLS TO MID/UPPER 90S OVER MUCH OF THE PLAINS. A FEW STORMS COULD HOWEVER HAVE GUSTY WINDS CONSIDERING THE HIGH BASED NATURE OF THE STORMS.
1228 AM EDT WED AUG 12 2015 A COLD FRONT WAS MOVING ACROSS OUR REGION AROUND MIDNIGHT AND IT SHOULD BE LOCATED WELL OFF THE COAST BY DAYBREAK.
UPPER LEVEL RIDGING CONTINUES FROM THE SOUTHERN PLAINS TO THE CANADAIN PRAIRIES WHILE A LONG WAVE TROUGH AMPLIFIES SOUTH INTO SOUTH GA AND NORTH FL. ATLANTIC HIGH PRESSURE WILL RIDGE ACROSS FL TO THE GULF. PREVAILING SOUTHWEST TO WEST FLOW OVERNIGHT WILL HELP KEEP THE LOWS SLIGHTLY WARMER THAN NORMAL. A FRONTAL TROUGH/BOUNDARY TO THE NORTH AND A RIDGE OF HIGH PRESSURE TO THE SOUTH WILL MAINTAIN WESTERLY WINDS OVERNIGHT.
1049 PM EDT TUE AUG 11 2015 A COLD FRONT WILL PUSH THROUGH OVERNIGHT. HIGH PRESSURE WILL BUILD OVER THE MIDDLE ATLANTIC REGION ON WEDNESDAY AND REMAIN THERE INTO THE UPCOMING WEEKEND. WEAK COLD FRONT WILL PUSH THROUGH OVERNIGHT BRINGING NORTHWEST FLOW TO THE REGION. MOSTLY DRY AND SLIGHTLY COOLER CONDITIONS EXPECTED ON WEDNESDAY WITH HIGHS REACHING THE LOWER 80S IN MOST LOCATIONS.
LOW TEMPERATURES IN THE LOW TO MID 60S. FOR WEDNESDAY PRECIPITABLE WATER VALUES REMAIN RATHER HIGH DURING THE MORNING BEFORE SOME DRIER AIR MOVES IN FROM THE NORTH/NORTHWEST PUSHING THE HIGHER VALUES TO THE FAR SOUTH/SOUTHEAST PORTIONS OF THE AREA. NAM SUGGESTING HIGH TEMPERATURES IN THE LOW TO MID 70S WHILE THE GFS SHOWS MID 80S TO AROUND 90.
645 PM CDT TUE AUG 11 2015 LARGE AREA OF HIGH PRESSURE BUILDING INTO THE REGION TONIGHT. WITH THE RIDGE AXIS IN PLACE ACROSS WESTERN IOWA INTO NEBRASKA/NORTHERN KANSAS.
TONIGHT AND WEDNESDAY THE LATEST RAP ANALYSIS AND SATELLITE/RADAR IMAGERY SHOW HIGH PRESSURE STRETCHING FROM HUDSON BAY TO THE SOUTHERN GREAT PLAINS EARLY THIS AFTERNOON. LOWS MAINLY IN THE LOWER TO MIDDLE 50S. WEDNESDAY NIGHT THROUGH TUESDAY WITH AMPLIFICATION OF THE WESTERN RIDGE EXPECTED THE REST OF THIS WEEK. COULD BEGIN TO SEE INFLUENCE FROM AN APPROACHING COLD FRONT.
THE WEAK COLD FRONT WILL DRIFT TO THE SOUTHWEST WITH MAINLY SELY WINDS 10 KTS OR LESS SHIFTING TO MAINLY NELY. WE EXPECT ANOTHER SHOT FOR ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS AS THE REMNANTS OF A WEAK COLD FRONT ALONG WITH AN INCREASE IN MID-LEVEL MOISTURE MOVES INTO SOUTH CENTRAL TEXAS. MOISTURE LEVELS REMAIN HIGHEST ALONG AND SOUTH OF THE THE HIGHWAY 90 CORRIDOR.
AN UPPER RIDGE WAS CENTERED OVER NEW MEXICO WHILE A LARGE UPPER TROUGH DOMINATED THE EASTERN HALF OF THE UNITED STATES. A PLUME OF MID LEVEL MOISTURE CONTINUED TO STREAM AROUND THE UPPER HIGH INTO COLORADO ALONG WITH EMBEDDED COMPACT VORTICITY MAXIMA. THIS SET UP MAY REPEAT ITSELF A FEW TIMES IN THE NEXT FEW DAYS AS ADDITIONAL VORTICITY MAXIMA ROTATE AROUND THE UPPER HIGH AND MOVE SOUTHEAST ACROSS WESTERN KANSAS.
THE STUBBORN UPPER HIGH WHICH HAS PLAGUED THE AREA RECENTLY WILL CONTINUE TO SHIFT WESTWARD AS THE EAST COAST TROUGH SHARPENS AND DIGS SOUTHWARD.
858 PM EDT TUE AUG 11 2015 SCATTERED SHOWERS WILL LINGER INTO WEDNESDAY AS AN UPPER TROUGH MOVES ACROSS THE AREA.
TEMPERATURES RANGED FROM THE 79 DEGREES IN THE PLATTE RIVER VALLEY TO 87 AT PINE RIDGE. MODELS HAVING A TOUGH TIME AS THE UPPER RIDGE SUSTAINS OVER THE INTERMOUNTAIN REGION AND STRENGTHENS. MODELS ARE CREATING SOME DIFFERENCES IN HOW PIECES OF ENERGY MOVE THROUGH THE UPPER RIDGE THAT PRODUCES LOW CONFIDENCE IN THE FORECASTED LIMITED POPS IN THE NEAR TERM. TEMPERATURES WEDNESDAY WILL RANGE FROM THE LOWER 90S NORTH TO MIDDLE 80S SOUTHWEST.
THE EARLY EVENING CONVECTION HAS DISSIPATED ALONG A WEAK COLD FRONT NEAR THE I-20 CORRIDOR. DRIER AIR IN THE WAKE OF THE COLD FRONT WILL LIMIT CONVECTION AND LEAD TO LOW RELATIVE HUMIDITIES WEDNESDAY. A DRY COLD FRONT NEAR I-20 THIS EVNG WL CONT DROPPING SOUTH TONIGHT AND BRING DRIER AIR. THE BLOW UP OF EARLY MORNING CONVECTION HAD MUCH TO DO WITH THIS AND KEPT MANY LOCATIONS ACROSS CENTRAL AND SOUTHERN PORTIONS OF THE ARKLAMISS A LITTLE COOLER THAN ANTICIPATED. A COLD FRONT CONTINUES TO GRADUALLY MAKES IT WAY DOWN TOWARD THE HEART OF THE REGION FROM THE NORTH AND NORTHWEST THIS AFTERNOON. TEMPERATURES TONIGHT WILL BE DROPPING OFF A BIT MORE THAN PREVIOUS NIGHTS DUE TO THE INFLUENCE OF COOLER AIR TRYING TO MAKE ITS WAY SOUTH.
WILL MAINTAIN THE HIGHER POPS TO THE NORTH/NORTHEAST WEDNESDAY AND NEAR THE COAST WEDNESDAY NIGHT. A BIT TRICKER AS MOST MODEL 2 METER TEMPERATURES ARE QUITE WARM BUT ALSO SHOWING LIGHT SOUTHWEST WINDS AND ABOUT THE SAME IF NOT COOLER BOUNDARY LAYER TEMPERATURES. AM GOING WITH MORE OF A CONSENSUS FORECAST (BUT A TAD WARMER THAN THIS MORNING DUE TO AFOREMENTIONED TEMPERATURES) FOR WEDNESDAY'S LOW TEMPERATURES.
AND A RIDGE EXTENDS NORTH/NORTHWEST FROM THE HIGH INTO SASKATCHEWAN. HIGH PRESSURE WAS CENTERED TONIGHT.
A SURFACE COLD FRONT WILL MOVE SOUTHEAST THROUGH CENTRAL NC TONIGHT.
857 PM CDT TUE AUG 11 2015 HIGH PRESSURE WILL GRADUALLY BUILD INTO CENTRAL AND SOUTHEAST ILLINOIS OVERNIGHT. THE CONTINUED FALL OF SURFACE DEW POINTS AND LIGHT WINDS SHOULD RESULT IN OVERNIGHT LOWS SEVERAL DEGREES COOLER THAN LAST NIGHT, WITH LOWS NEAR 60 IN MANY AREAS. UPPER LEVEL FLOW STAYS NORTHWESTERLY OVER IL WITH UPPER LEVEL RIDGE OVER THE SW STATES AND UPPER LEVEL TROF OVER EASTERN CANADA. VERY PATCHY SHALLOW GROUND FOG POSSIBLE LATE TONIGHT ESPECIALLY NW OF THE IL RIVER CLOSER TO HIGH PRESSURE RIDGE.
1020 PM EDT TUE AUG 11 2015 SCATTERED SHOWERS WILL LINGER INTO WEDNESDAY AS AN UPPER TROUGH MOVES ACROSS THE AREA.
1249 AM EDT WED AUG 12 2015 SCATTERED SHOWERS WILL LINGER INTO WEDNESDAY AS AN UPPER TROUGH MOVES ACROSS THE AREA.
RADAR DETECTED SMOKE OFF THE SODA WILDFIRE THAT EXPANDED EXTENSIVELY FROM SW OF BOISE ACROSS THE LOWER TREASURE VALLEY.
LATE EVENING SURFACE ANALYSIS DEPICTS A COLD FRONT CROSSING THE APPALACHIANS AND MOVING SOUTHEASTWARD. A TROUGH IS DEEPENING OVER THE EASTERN THIRD OF THE NATION. AS RIDGING AMPLIFIES OVER THE PLAINS STATES. AS THE TROUGH ALOFT REACHES ITS MAXIMUM AMPLITUDE OVER THE SOUTHEAST STATES ON WEDNESDAY. WEST SURFACE WINDS WILL QUICKLY BOOST TEMPERATURES INTO THE LOW OR MID 90S BEFORE CONVECTION DEVELOPS.
728 PM EDT TUE AUG 11 2015 THE SLOW MOVING AREA OF LOW PRESSURE WILL CONTINUE THE RAIN INTO EARLY THIS EVENING BEFORE TAPERING TO SCATTERED SHOWERS FROM WEST TO EAST AS IT MOVES THROUGH THE REGION TONIGHT AND THEN OUT TO SEA WEDNESDAY.
THE NAM BUFKIT ANALYSIS WAS SHOWING THE BOUNDARY LAYER RH FIELDS INCREASING AFTER MIDNIGHT IN THE SOUTHERN PANHANDLE UNDERNEATH THE LOW LEVEL INVERSION.
1124 PM CDT TUE AUG 11 2015 12Z UA ANALYSIS HAS AN 850MB RIDGE IN THE PLAINS WITH WEAK TROFS FROM THE OHIO VALLEY INTO THE WESTERN GREAT LAKES. 18Z SFC DATA HAS HIGH PRESSURE FROM THE UPPER MIDWEST INTO THE SOUTHERN PLAINS. QUIET CONDITIONS WILL BE SEEN ACROSS THE AREA TONIGHT AND WEDNESDAY AS HIGH PRESSURE SLOWLY MOVES ACROSS THE MIDWEST.
1145 PM CDT TUE AUG 11 2015 HIGH PRESSURE WILL GRADUALLY BUILD INTO CENTRAL AND SOUTHEAST ILLINOIS OVERNIGHT. THE CONTINUED FALL OF SURFACE DEW POINTS AND LIGHT WINDS SHOULD RESULT IN OVERNIGHT LOWS SEVERAL DEGREES COOLER THAN LAST NIGHT, WITH LOWS NEAR 60 IN MANY AREAS. UPPER LEVEL FLOW STAYS NORTHWESTERLY OVER IL WITH UPPER LEVEL RIDGE OVER THE SW STATES AND UPPER LEVEL TROF OVER EASTERN CANADA. VERY PATCHY SHALLOW GROUND FOG POSSIBLE LATE TONIGHT ESPECIALLY NW OF THE IL RIVER CLOSER TO HIGH PRESSURE RIDGE.
The cold front that's responsible for the cooler and drier air-mass has pushed south and eastward into the Mississippi and Tennessee River Valleys this afternoon. Aloft, the area will be stuck between a hearty ridge over the southern high plains and a relatively deep trof over the east. This will allow for a gradual return to warmer/hotter temps and higher humidity values as the week progresses.
SOUTHERLY FLOW REMAINS IN PLACE OVER UTAH IN BETWEEN THE RIDGE CENTERED OVER COLORADO AND A CLOSED LOW OVER THE NORTHERN CALIFORNIA COAST. IT IS CROSSING AN AREA WITH THE HIGHEST CAPE IN THE FORECAST AREA.
LOWS TONIGHT SHOULD BOTTOM OUT IN THE LOW TO MID 60S. CHATTANOOGA AIRPORT, TN 69 88 65 87 / 10 10 0 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 67 84 63 85 / 10 10 0 10 OAK RIDGE, TN 66 85 62 85 / 10 10 0 0 TRI CITIES AIRPORT, TN 62 82 58 83 / 20 10 0 10.
BUILDING MIDWEST SFC RIDGING INFLUENCES. AND SOUTHERN PLAINS BUILDING UPPER LEVEL RIDGING INFLUENCES ESPECIALLY. LOWS WED NIGHT WILL ACTUALLY LOWER INTO THE LOW 60S. AS SFC RIDGING INFLUENCES BEGIN TO SLIDE EWD. LOWS THU NIGHT WILL BE A LITTLE WARMER IN THE LOWER 60S. SFC RIDGING INFLUENCES WILL CONTINUE TO MOVE EWD. ALONG WITH WEAKENING IN UPPER LEVEL RIDGING INFLUENCES. BELIEVE THAT THERE WILL BE ENOUGH MOISTURE AND DIURNAL BASED INSTABILITY AS UPPER LEVEL RIDGING DYNAMICS WEAKEN TO SUPPORT ISO SHWRS/TSTMS DEVELOPMENT SAT AFTERNOON AND AGAIN ON SUN AND MON ACROSS SRN AND PLATEAU REGIONS. AN APPROACHING SFC COLD FRONT FROM THE OHIO RIVER VALLEY IS EXPECTED BY NEXT TUE AFTERNOON TO APPROACH THE MID STATE PROVIDING A FOCUSING MECHANISM FOR ISO SHWRS/TSTMS.
/issued 129 PM CDT TUE AUG 11 2015/ The front pushed through the area this morning bringing northeasterly winds and slightly cooler morning lows than we have seen the last several days. Low temperatures tonight are expected to be in the lower 70s and 60s for much of the area. The high pressure system will continue to meander west across the Texas Panhandle and New Mexico and will reside over the Four Corners region by the end of the week.
/ISSUED 354 PM CDT TUE AUG 11 2015/ A RARE SUMMER COLD FRONT HAS PUSHED DEEP INTO CENTRAL TEXAS THIS AFTERNOON. WITH THE MID AND UPPER RIDGES TO OUR WEST. SUGGESTING THAT THE TROUGH IN THE EASTERN STATES WILL RETROGRADE INTO THE LOWER MISSISSIPPI VALLEY AND ALONG THE TEXAS COAST.
635 PM CDT TUE AUG 11 2015 FOR 00Z TAFS /ISSUED 157 PM CDT TUE AUG 11 2015/ VIS SATELLITE IMAGERY DEPICTED THE COLD FRONT FROM JUST NW OF KNOXVILLE TN THROUGH WINCHESTER TN TO NEAR MUSCLE SHOALS AL.
751 PM EDT TUE AUG 11 2015 A WEAK COLD FRONT WILL MOVE INTO THE AREA WEDNESDAY.
USING THE CLASSICAL DEFINITION OF A COLD FRONT AS THE LEADING EDGE OF AN ADVANCING COLDER AIR MASS. I WOULD PUT THE COLD FRONT THIS AFTERNOON NEAR OR PERHAPS JUST NORTH OF THE ONGOING BAND OF CONVECTION. STILL LOOKS LIKE THE EAST COAST TROUGH THAT DEVELOPS/AMPLIFIES THE END OF THE WEEK MAY CUT OFF A WEAK LOW OVER THE WEEKEND -- A SOLUTION BOTH THE GFS AND ECMWF AGREE ON IN GENERAL. A COLD FRONT WAS VERY CLOSE TO TCL/BHM/GAD EARLY THIS EVENING.
/ISSUED 350 PM EDT TUE AUG 11 2015/ LATEST OBSERVATIONS AND EVEN THE VIS SATELLITE LOOP ARE SHOWING A COLD FRONT FINALLY PUSHING INTO FAR NW GA. RESULTING IN COOLER LOWS IN THE 60S ACROSS NORTH GA TONIGHT.
647 PM CDT TUE AUG 11 2015 12Z UA ANALYSIS HAS AN 850MB RIDGE IN THE PLAINS WITH WEAK TROFS FROM THE OHIO VALLEY INTO THE WESTERN GREAT LAKES. 18Z SFC DATA HAS HIGH PRESSURE FROM THE UPPER MIDWEST INTO THE SOUTHERN PLAINS. QUIET CONDITIONS WILL BE SEEN ACROSS THE AREA TONIGHT AND WEDNESDAY AS HIGH PRESSURE SLOWLY MOVES ACROSS THE MIDWEST.
845 PM CDT TUE AUG 11 2015 QUIET CONDITIONS EXPECTED ACROSS THE AREA OVERNIGHT AS HIGH PRESSURE GRADUALLY SLIDES INTO THE AREA.
/ISSUED 239 PM CDT TUE AUG 11 2015/ SLIGHTLY COOLER AND LESS HUMID WEATHER WILL BE THE MAIN STORY THROUGH THE END OF THE WEEK. A MID/UPPER RIDGE IS FORECAST TO SLOWLY MOVE WEST.
A SOUTH-SOUTHWEST MID AND UPPER LEVEL FLOW AROUND A RIDGE OVER TEXAS WILL CONTINUE TO TRANSPORT MONSOON MOISTURE INTO THE AREA. SCATTERED THUNDERSTORMS HAVE FORMED OVER THE HIGHER TERRAIN EARLY THIS AFTERNOON AND WILL CONTINUE TO SPREAD EAST THROUGH THE AFTERNOON AND EARLY EVENING. THE RIDGE WILL RETROGRADE WESTWARD WEDNESDAY. WILL SEE MID LEVELS WARM A LITTLE AS THE RIDGE SHIFTS WEST. STILL EXPECT SCATTERED STORMS TO FORM OVER THE HIGHER TERRAIN DURING THE AFTERNOON. THE WARMER AIRMASS WILL LEAD TO HIGHS IN THE UPPER 80S TO LOWER 90S ACROSS NORTHEAST COLORADO. UPPER LEVEL HIGH PRESSURE WILL REMAIN CENTERED OVER THE SOUTHERN ROCKIES AND SOUTHWESTERN STATES OVER THE NEXT SEVERAL DAYS. DESPITE THE UPPER HIGH OVER THE REGION. THIS IS DUE TO THE FACT THAT PLENTY OF MONSOONAL MOISTURE WILL BECOME ENTRAINED INTO THE UPPER HIGH.
DATA COLLECTED FROM THE KEY WEST EVENING RADIOSONDE BALLOON INDICATED AN AVERAGE WIND SPEED OF ONLY 3 KNOTS IN THE LOWEST 10000 FEET ABOVE GROUND.
UPPER LEVEL FLOW STAYS NORTHWESTERLY OVER IL WITH UPPER LEVEL RIDGE OVER THE SW STATES AND UPPER LEVEL TROF OVER EASTERN CANADA. VERY PATCHY SHALLOW GROUND FOG POSSIBLE LATE TONIGHT ESPECIALLY NW OF THE IL RIVER CLOSER TO HIGH PRESSURE RIDGE.
MOSTLY CLEAR SKIES THIS HOUR AS HIGH PRESSURE BUILDS INTO THE MID STATE FOLLOWING YESTERDAY'S FROPA. BUILDING MIDWEST SFC RIDGING INFLUENCES. AND SOUTHERN PLAINS BUILDING UPPER LEVEL RIDGING INFLUENCES ESPECIALLY. LOWS WED NIGHT WILL ACTUALLY LOWER INTO THE LOW 60S. AS SFC RIDGING INFLUENCES BEGIN TO SLIDE EWD. LOWS THU NIGHT WILL BE A LITTLE WARMER IN THE LOWER 60S. SFC RIDGING INFLUENCES WILL CONTINUE TO MOVE EWD. ALONG WITH WEAKENING IN UPPER LEVEL RIDGING INFLUENCES. BELIEVE THAT THERE WILL BE ENOUGH MOISTURE AND DIURNAL BASED INSTABILITY AS UPPER LEVEL RIDGING DYNAMICS WEAKEN TO SUPPORT ISO SHWRS/TSTMS DEVELOPMENT SAT AFTERNOON AND AGAIN ON SUN AND MON ACROSS SRN AND PLATEAU REGIONS. AN APPROACHING SFC COLD FRONT FROM THE OHIO RIVER VALLEY IS EXPECTED BY NEXT TUE AFTERNOON TO APPROACH THE MID STATE PROVIDING A FOCUSING MECHANISM FOR ISO SHWRS/TSTMS.
922 PM EDT TUE AUG 11 2015 LOW PRESSURE WILL CROSS THE REGION TONIGHT THROUGH WEDNESDAY.
STORMS WILL INITIALLY FORM OVER THE HIGH TERRAIN ALONG THE MOGOLLON RIM.
SQUASHING THE SUBTROPICAL RIDGE SOUTHWARD. THE RIDGE'S AXIS WOULD STRETCH WEST ACROSS FLORIDA AND THE NORTHERN GULF OF MEXICO. TEMPERATURES RANGE FROM 74 ON THE TEMPERATURE SHEDDING BIG PINE KEY TO THE LOWER 80S FOR THOSE LOCATIONS OPEN TO THE MARITIME BREEZES OF HAWK CHANNEL.
A COLD FRONT WILL CROSS THE REGION OVERNIGHT. HIGH PRESSURE WILL BUILD OVER THE AREA ON MONDAY.
329 AM CDT SUN JUN 28 2015 INCREASING ATMOSPHERIC THICKNESS AND STRENGTHENING SOUTHWESTERLY LOW- LEVEL FLOW AHEAD OF AN APPROACHING COLD FRONT WILL SUPPORT A HOT AND BREEZY DAY TODAY. REACHING ROUGHLY THE HIGHWAY 50 OR KS TURNPIKE CORRIDORS BY MID-LATE AFTERNOON.
AT 3 AM TEMPERATURES IN THE DVN CWA RANGED FROM THE MID 50S TO LOWER 60S WITH DEWPOINTS IN THE LOWER 50S TO LOWER 60S SO ANOTHER COMFORTABLE EARLY MORNING IN PROGRESS. THEN LIKELY AGAIN LATER THIS AFTERNOON INTO THE EVENING AS VIGOROUS UPPER LEVEL TROUGH/EMBEDDED LOW DIVES INTO NORTHERN IL BY THIS EVENING. WITH FREEZING LEVELS AT 12K LARGE HAIL IS LIKELY. MINIMUM TEMPERATURES TONIGHT WILL BE IN THE LOWER TO MID 60S. THEN MOST MODELS INDICATE WEAK SURFACE RIDGING.
1128 PM MDT SAT JUN 27 2015 THE LARGE AREA OF HIGH PRESSURE WILL REMAINED POSITIONED OVER UTAH THIS WEEKEND WITH MOISTURE RECYCLING UNDER THE HIGH FOR SOME SCATTERED AFTERNOON AND EVENING THUNDERSTORMS OVER THE HIGHER TERRAIN. EXPECTING MOST VALLEYS TO REMAIN FAIRLY DRY WITH THE EXCEPTION BEING THE SOUTHERN VALLEYS WHERE THE BEST MOISTURE RESIDES AND STORMS MAY DRIFT OFF THE HIGHER TERRAIN LATE IN THE DAY. MOISTURE BEGINS TO SLOWLY INCREASE TONIGHT INTO THE DAY ON SUNDAY UNDERNEATH THE HIGH. THIS WILL RESULT IN A SLIGHT INCREASE IN COVERAGE BUT OVERALL TRENDS REMAIN THE SAME WITH MAINLY AFTERNOON AND EVENING STORMS OVER HIGHER TERRAIN AND MOST VALLEYS REMAINING DRY WITH A FEW DRIFTING OFF THE HIGHER TERRAIN LATE IN THE DAY.
211 AM EDT SUN JUN 28 2015 COLD FRONT WHICH PRODUCED SHOWERS AND THUNDERSTORMS WILL MOVE TO THE COAST TODAY AND OFFSHORE TONIGHT. THIS WILL ALLOW DRIER AIR TO MOVE INTO THE REGION THROUGH TONIGHT ALONG WITH SLIGHTLY COOLER AIR.
417 AM CDT SUN JUN 28 2015 IT'S BEEN A PLEASANTLY COOL NIGHT ACROSS MIDDLE TENNESSEE WITH MOSTLY CLEAR SKIES AND TEMPERATURES IN THE LOW 60S.
245 AM EDT SUN JUN 28 2015 LOW PRESSURE WILL MOVE ACROSS THE AREA TODAY BRINGING A GOOD SOAKING RAIN AND SOME GUSTY WINDS TO THE AREA.
AN UNSEASONABLY STRONG COLD FRONT WILL CROSS THE REGION THIS MORNING.
A TROUGH OF LOW PRESSURE WILL REMAIN NEARLY STATIONARY OVER THE EASTERN UNITED STATES KEEPING THE RIDGE OF HIGH PRESSURE OVER THE FLORIDA STRAITS THROUGH TONIGHT. A WEAK COLD FRONT WILL ALSO MOVE SOUTHWARD FROM THE SOUTHEASTERN UNITED STATES INTO NORTHERN FLORIDA.
PRIMARY INFLUENCE OF OUR WEATHER IN THE EXTENDED WILL BE THE STRONG DOME OF HIGH PRESSURE OVER THE GREAT BASIN WHICH LOOKS TO PERSIST THROUGH 240 HOURS.
WITH A RIDGE OF HIGH PRESSURE GETTING SQUEEZED BUT STILL HOLDING ON. HIGH PRESSURE REMAINS CENTERED OVER THE NW GREAT LAKES REGION THIS AFTERNOON. LOW PRESSURE CENTERED SOUTH OF MICHIGAN CONTINUES TO GRADUALLY DEEPEN AS IT TRACKS NORTH OF THE OHIO VALLEY.
THE COLD FRONT CONTINUES TO PUSH SOUTHWARD ACROSS THE REGION THIS MORNING, WITH TEMPS/ DEWPOINTS NOW MOSTLY IN THE 60S ALONG THE HWY 82 CORRIDOR. HOWEVER, EXPECTING THAT TO CHANGE QUICKLY AFTER SUNRISE AS MIXING RESUMES, BRINGING DEWPOINTS DOWN INTO THE LOW/MID 60S ACROSS THE REMAINDER OF THE AREA THROUGH THE DAY. ATTENTION THEN TURNS FARTHER NORTH AS AN UPPER JET STREAK MOVES TOWARD THE BASE OF THE UPPER TROUGH OVER THE EASTERN U.
LESS SHRA/TSRA ACTIVITY IS EXPECTED SUNDAY AFTERNOON WITH THE HIGHEST PROSPECTS ACROSS PALM BEACH AND BROWARD COUNTIES. WEEKEND/EARLY WEEK FORECAST WILL BE DOMINATED BY ERN CONUS TROUGH.
VIGOROUS UPSTREAM MID-LEVEL SHORT WAVE AND LOW PRESSURE TROF OVER CENTRAL MN IS EXPECTED TO TAKE A SOUTH TO SOUTHEAST TRACK OVER THE NEXT 24 HOURS. LOW LEVEL THETA-E RIDGE SETS UP ACROSS WI/IL BORDER AREA TONIGHT. AS UPPER LOW MOVES ACROSS NRN IL.
THIS EVENING THROUGH SUNDAY NIGHT STRONG UPPER RIDGING CONTINUES ACROSS THE WRN THIRD OF THE CONUS.
EARLY MORNING WATER VAPOR SATELLITE IMAGERY IS SHOWING A STRONG MOISTURE GRADIENT ASSOCIATED WITH A COLD FRONT CURRENTLY MOVING THROUGH THE SOUTHEASTERN CONUS. WITH A LESS EXTREME POCKET OF DRY AIR ROTATING AROUND THE RIDGE AND INTO THE FLORIDA PENINSULA THIS MORNING. AS THE COLD FRONT EDGES CLOSER AND STALLS OUT AROUND NORTHERN FLORIDA LATER TODAY AND TONIGHT. WESTERLY/SOUTHWESTERLY FLOW WILL DOMINATE THE AREA BETWEEN THIS FRONT AND THE RIDGE AXIS TO THE SOUTH.
THE COLD FRONT DRAPED ACROSS NORTHERN ALABAMA AND GEORGIA WILL PUSH SOUTH TODAY AND STALL IN THE NORTHERN TIER OF OUR AREA.
449 AM EDT SUN JUN 28 2015 LOW PRESSURE WILL CONTINUE NORTHEAST TO NEW ENGLAND TODAY AS A RIDGE OF HIGH PRESSURE BRIEFLY BUILDS INTO THE OHIO VALLEY. THE RIDGE WILL MOVE EAST TONIGHT AS LOW PRESSURE AND A WEAK COLD APPROACH THE REGION. THE LOW AND ITS ASSOCIATED CLOSED MID LVL CIRCULATION WILL MOVE TOWARD THE NEW ENGLAND REGION TODAY. TEMPERATURES WILL RANGE FROM THE LOWER 70S NORTHEAST TO THE UPPER 70S SOUTHWEST. THIS WILL BE FOLLOWED QUICKLY BY ANOTHER AREA OF LOW PRESSURE AND A WEAK COLD FRONT FOR MONDAY INTO MONDAY NIGHT. AS THE LOW LEVEL JET SHIFTS EAST. HIGHS ON MONDAY WILL RANGE FROM THE LOWER 70S NORTH TO THE UPPER 70S SOUTH. ITS ATTENDANT WEAK COLD FRONT IS THEN EXPECTED TO MOVE EAST INTO THE REGION.
630 AM EDT SUN JUN 28 2015 A COLD FRONT WILL PUSH OUT OF THE REGION EARLY TODAY BRINGING COOLER AND DRIER CONDITIONS TO START THE NEW WEEK. ON MONDAY AN ANOMALOUS HIGH AMPLITUDE UPPER TROUGH WILL BE OVER EASTERN NORTH AMERICA. WHILE A RIDGE OF SIMILAR PROPORTIONS WILL BE OVER THE WEST. A CLOSED UPPER LOW WILL BE LIFTING OUT OF THE TROUGH OVER SOUTHERN QUEBEC.
313 AM EDT SUN JUN 28 2015 A COLD FRONT WILL MOVE INTO THE AREA THIS MORNING AND BECOME NEARLY STATIONARY NEAR THE EASTERN MIDLANDS AND COASTAL PLAIN THIS AFTERNOON. THE FRONT MAY PROVIDE A FOCUS FOR WIDELY SCATTERED THUNDERSTORMS ALTHOUGH DRIER AIR WILL FILTER IN FROM THE WEST AND SLIGHTLY COOLER TEMPERATURES ARE EXPECTED.
414 AM EDT SUN JUN 28 2015 LOW PRESSURE CENTER DRIFTS EAST ACROSS THE NORTHEASTERN STATES TODAY AND TONIGHT. A COLD FRONT CROSSING MONDAY NIGHT BEGINS A PARADE OF SYSTEMS CROSSING THE AREA DURING THE UPCOMING WEEK. LOW PRESSURE OVER THE UPPER OHIO VALLEY EARLY THIS MORNING. TEMPERATURES WILL BE SLIGHTLY WARMER ON MONDAY. AS A WARM FRONTAL BOUNDARY LIFTS NORTH ACROSS THE REGION OUT AHEAD OF AN APPROACHING LOW. ALONG WITH WARMER TEMPERATURES.