Aikyam-Lab/Synoptic-Bench huggingface dataset:
THIS MORNING GOT OFF TO A WARMER START THAN YESTERDAY BY A FEW DEGREES. AND 15Z OBS IN THE LOW/MID 80S. THE TREND WILL CONTINUE WITH HIGHS TODAY EXPECTED TO BE IN THE LOW 90S.
740 AM EDT WED JUL 8 2015 A COLD FRONT WILL MOVE SOUTHEAST ACROSS THE NORTH COUNTRY EARLY THIS MORNING WITH SHOWERS ENDING. A HIGH PRESSURE AREA WILL BUILD SLOWLY EAST FROM THE GREAT LAKES LATER TODAY AND WILL BE OVER THE NORTH COUNTRY THROUGH THE END OF THE WEEK. QUICK UPDATE TO CAPTURE WIND AND TEMP TRENDS WITH COLD FRONT MOVING SOUTHEAST OF BTV WITH A BAND OF SHOWERS ALONG THE FRONT.
A BROAD UPPER LOW WILL LIFT THROUGH THE WESTERN GREAT BASIN LATE IN THE WEEK.
12Z TBW SOUNDING SHOWED SOME DEEPER S TO SE FLOW IN THE LOW LEVELS COMPARED TO YESTERDAYS MORE WESTERLY LOW LEVEL FLOW. HI RES GUIDANCE AGREES WITH CURRENT FORECAST SHOWING THE HIGHEST LIKELIHOOD OF STORMS TODAY ALONG AND JUST INLAND OF I-75. HIGH PRESSURE RIDGE AXIS REMAINS ACROSS THE NORTHERN GULF COAST TODAY WITH A LIGHT BREEZE FROM THE E TO SE BEING REPORTED AT COASTAL SITES AND OFF SHORE BUOYS.
CHATTANOOGA AIRPORT, TN 92 72 94 71 / 30 10 10 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 88 70 90 70 / 30 20 10 10 OAK RIDGE, TN 88 70 90 70 / 40 20 10 10 TRI CITIES AIRPORT, TN 84 65 88 66 / 40 20 10 20.
1017 AM EDT WED JUL 8 2015 THE COLD FRONT WILL STALL NEAR THE MASON-DIXON LINE TODAY. CHANCES FOR RAIN DIMINISH TONIGHT AS THE NEXT LOW PRESSURE SYSTEM MOVES TO NORTHEASTERN INDIANA BY THURSDAY MORNING. HIGH PRESSURE WILL BUILD INTO THE REGION THURSDAY NIGHT.
A TROUGH OF LOW PRESSURE APPROACHING THE AREA WILL BRING NIGHT AND MORNING CLOUDS. COOLER THAN NORMAL TEMPERATURES WILL CONTINUE THROUGH SATURDAY07/1800Z. THE MARINE LAYER IS 2200 FEET DEEP AND LIKE LAST NIGHT THE LOW CLOUDS HAVE BEEN SLOW TO DEVELOP. SOME DRIZZLE IS POSSIBLE THROUGH MID MORNING DUE TO THE LIFT PROVIDED BY AN APPROACHING TROF.
CUMULUS FIELD DEVELOPING NICELY ACROSS ALABAMA WITH THE LEAST COVER NOTED ON VISIBLE SATELLITE ACROSS THE SOUTHWEST PART OF THE STATE ALONG THE COAST WHERE THE BEST SUBSIDENCE/SURFACE RIDGING IS BEST.
607 AM CDT WED JUL 8 2015 LATEST MODELS ARE IN PRETTY GOOD AGREEMENT SHOWING LARGE SCALE TRANSITIONING FROM ZONAL FLOW TO A MORE AMPLIFIED PATTERN WITH A HIGH PRESSURE DOME PREVAILING OVER THE CNTRL/ERN CONUS WITH A UPSTREAM TROF BECOMING ESTABLISHED OVER THE WEST COAST. NAM/GFS ARE MORE OPTIMISTIC WITH PCPN DEVELOPMENT OVER THE CWA HEADING INTO THIS WEEKEND ALONG A WARM FRONT LIFTING OUT OF THE CNTRL PLAINS AND INTO THE UPPER MIDWEST. ECM AND GFS ON TRACK SHOWING WARM AND HUMID CONDITIONS ON TAP THIS WEEKEND IN RESPONSE TO UPPER LEVEL HIGH PRESSURE IN CONTROL OVER THE CONUS. SHOULD SEE AFTN HIGHS PUSHING INTO THE LOW/MID 90S ON SAT AND SUN WITH HEAT INDICES AROUND 100.
1102 AM CDT WED JUL 8 2015 REGIONAL MOSAIC RADAR CONTINUES TO SHOW CONVECTION ALONG A STALLED COLD FRONT ACROSS E CENTRAL OK AND NRN AND CENTRAL TEXAS. BUILDING UPPER RIDGE FROM THE EAST WILL BRING MOSTLY SUNNY SKIES AND AFTN HIGHS OF MID TO UPPER 90S AREAWIDE BY THE WEEKEND. AS THE UPPER RIDGE BEGINS TO BREAK DOWN AFTER THE WEEKEND.
THE HIGHER RAINFALL RATES ASSOCIATED WITH THE PREVIOUS WILL IMPACT BRYAN AND ATOKA COUNTIES OVER THE NEXT FEW HOURS.
Lows will drop into the lower 70s at most locations.
HIGH PRESSURE WILL REMAIN IN CONTROL BOTH ALOFT AND AT THE SURFACE. THURSDAY WILL BE A TRANSITION DAY AS FAR AS WIND STRENGTH AS LOW PRESSURE OVER THE TEXAS PANHANDLE BEGINS TO WEAKEN. DEEP LAYER MOISTURE DECREASED FOR THE NEXT COUPLE OF DAYS WITH THE UPPER LEVEL RIDGE.
WITH BERMUDA LIKE RIDGE BUILDING INTO THE AREA A VERY QUIET SHORT TERM FORECAST IS EXPECTED. FORECAST MODELS VERY CONSISTENT SHOWING THE HIGH PRESSURE RIDGE AND THE DRIER AIRMASS CONTINUING OVER THE AREA AND KEEPING FRONTAL BOUNDARY NORTH OF THE STATE THROUGH THE SHORT TERM. THE HIGH PRESSURE RIDGE WILL ALSO HELP WITH THE WARMING TREND EXPECTED TEMPS WILL GET UP INTO THE 80S AND MID 90S OVER THE NEXT 2 DAYS. 01 THE FIRST PART OF THE SHORT TERM PERIOD WILL FEATURE A 594DM RIDGE OVER THE DEEP SOUTH FROM TEXAS THROUGH SOUTH CAROLINA.
LOW TO MID LEVEL MOISTURE WILL REMAIN LIMITED ACROSS THE CWA TODAY THROUGH THURSDAY AS THE 500MB RIDGE ACROSS THE SOUTHEAST UNITED STATES BUILDS WESTWARD INTO SOUTH TEXAS THE NEXT COUPLE OF DAYS.
THE HIGH PRESSURE WILL CONTINUE TO PROMOTE CLEAR SKIES AND RADIATIONAL COOLING OVER THE FORECAST AREA EARLY THIS MORNING. WHICH WERE ASSOCIATED WITH THE LOW LEVEL JET AHEAD OF A LOW PRESSURE TROUGH. SHOULD GRADUALLY DIMINISH AFTER SUNSET WHEN THE LOW LEVEL JET BEGINS TO DEGRADE. SLIGHTLY WARMER AND MORE HUMID WEATHER. IS EXPECTED ACROSS THE NORTHLAND AS SSW FLOW DEVELOPS IN RESPONSE TO THE EXITING HIGH PRESSURE AND APPROACHING LOW PRESSURE TROUGH FROM THE WEST. THERE WILL BE HEIGHT FALLS OVER THE NORTHLAND AS AN UPPER LEVEL TROUGH MOVES INTO THE REGION. HIGH TEMPERATURES SHOULD REACH THE LOW TO MIDDLE 70S. THE UPPER LEVEL TROUGH WILL PASS THROUGH THE NORTHLAND OVERNIGHT. THERE SHOULD BE CLEARING SKIES OVERNIGHT AS WEAK HIGH PRESSURE MOVES INTO THE REGION. WARMER TOWARDS THE END OF THE WEEK INTO THE WEEKEND.
ANOTHER BAND OF SHOWERS OVER THE DEVILS LAKE BASIN WAS MOVING EAST SOUTHEAST AT 15 TO 20 KNOTS WITH COLD FRONT. WATER VAPOR LOOP INDICATED A SHORT WAVE TROUGH FROM SOUTHERN MAN TO SOUTHERN SASK. TROUGH WILL MOVE ACROSS THE FORECAST AREA TODAY. SHOWERS AND THUNDERSHOWERS WILL PRECEDE THE TROUGH THIS MORNING. PRECIPITATION WAS EITHER IN THE 700 THETA-E RIDGE OR IN THE GRADIENT. UPPER LEVEL RIDGE OVER PACIFIC NORTHWEST MOVES EAST AND FLATTENS TONIGHT THROUGH THU. ALSO RIDGE BUILDING OCCURS IN THE SOUTHERN STREAM OVER THE GREAT PLAINS STARTING THU THROUGH THE REST OF THE SHORT TERM.
THE LOW LEVEL FLOW WILL WEAKEN AND VEER WITH THE BEST CHANCE OF ADDITIONAL RAIN OVER SOUTHEAST OKLAHOMA. INSTABILITY IS EXPECTED TO INCREASE THIS AFTERNOON OVER THE HIGH TERRAIN IN ADVANCE OF ANOTHER WAVE. MAINLY ALONG AND NORTH OF A WARM FRONT.
LOW PRESSURE WILL BRING SOUTHERN LOWER MICHIGAN SOME RAIN LATE TONIGHT INTO THURSDAY.
THIS HAZE APPEARS TO BE DUE TO A COMBINATION OF SMOKE FROM THE CANADIAN WILDFIRES THAT MOVED SOUTH BEHIND THE STRONG COLD FRONTAL PASSAGE A COUPLE OF DAYS AGO AND MOIST LOW-LEVEL CONDITIONS. SOUTHERLY LOW-LEVEL FLOW DEVELOPING EAST OF THE LEE CYCLONE WILL MAINTAIN LOWER 50 TO LOWER 60 DEGREE DEWPOINTS ACROSS THE AREA.
As the wave departs this afternoon and evening, precipitation will translate east northeast and out of the forecast area, allowing high pressure to build in temporarily tonight into Thursday morning.
1143 AM EDT WED JUL 8 2015 A COLD FRONT WILL CONTINUE TO MOVE SOUTHEAST AS LIGHT SHOWERS MOVE OUT ALONG AHEAD OF IT.
LOWS TONIGHT WILL PRIMARILY BE IN THE LOWER 60S. UNSEASONABLY COOL OTHERWISE WITH AFTERNOON HIGHS LIKELY STRUGGLING INTO THE LOW-MID 70S.
706 AM CDT WED JUL 8 2015 1021MB HIGH PRESSURE OVER THE GREAT LAKES HAS BROUGHT A COOLER/DRIER AIRMASS INTO MUCH OF CENTRAL ILLINOIS EARLY THIS MORNING. AS EVIDENCED BY 08Z/3AM DEWPOINTS ONLY IN THE LOWER TO MIDDLE 50S. AN AREA OF LOW PRESSURE IS DEVELOPING ALONG A STATIONARY FRONTAL BOUNDARY OVER SOUTHERN OKLAHOMA. THE LOW IS EXPECTED TO TRACK SLOWLY NORTHEASTWARD TODAY. AS LOW PRESSURE TRACKS ACROSS THE HEART OF CENTRAL ILLINOIS INTO NORTHERN INDIANA BY EARLY THURSDAY MORNING. ONCE THE LOW LIFTS TO THE NORTHEAST.
DEEP LAYER RIDGING WILL REMAIN ENTRENCHED ACROSS THE WESTERN ATLANTIC PROVIDING GENERAL EASTERLY FLOW TO PREVAIL ACROSS SOUTH FLORIDA. UNDERNEATH THE STRONG DEEP LAYER RIDGING IN PLACE. THIS FEATURE WILL DO LITTLE MORE THAN AIDE IN GENTLY PUSHING THE UPPER RIDGE A BIT TO THE NORTH AND WEST.
705 AM EDT WED JUL 8 2015 HIGH PRESSURE OFFSHORE AND AN INLAND TROUGH WILL PERSIST THROUGH THE WEEK.
BUILDING UPPER RIDGE FROM THE EAST WILL BRING MOSTLY SUNNY SKIES AND AFTN HIGHS OF MID TO UPPER 90S AREAWIDE BY THE WEEKEND. AS THE UPPER RIDGE BEGINS TO BREAK DOWN AFTER THE WEEKEND.
WILL KEEP POPS ON THE LOW SIDE THIS AFTERNOON. THERE IS A SURFACE COLD FRONT LOCATED NORTHWEST OF THE CWA. WEAK UPPER LEVEL RIDGING DEVELOPS ON THURSDAY WITH TEMPERATURES RETURNING TO NEAR NORMAL.
SEASONALLY COOL TEMPERATURES ARE EXPECTED FOR MUCH OF THE FORECAST AREA THROUGH THE WEEK AND INTO THE WEEKEND AS A LOW PRESSURE SYSTEM MOVES ACROSS CENTRAL AND NORTHERN CALIFORNIA. THIS LOW WILL ALSO BRING THE POSSIBILITY OF SHOWERS AND ISOLATED THUNDERSTORMS TODAY AND THURSDAY. 24 HOUR TEMPERATURE TRENDS ARE GENERALLY SEVERAL DEGREES COOLER THAN THOSE YESTERDAY AT THIS TIME WITH READINGS IN THE UPPER 50S TO LOWER 60S. AN UPPER LEVEL LOW IS CURRENTLY LOCATED WEST OF SAN FRANCISCO. THIS UPPER LOW WILL KEEP WINDS LIGHT. AND ALSO INTRODUCE A SLIGHT CHANCE OF LIGHT RAIN OR EVEN THUNDERSTORMS TO MAINLY THE HIGHER TERRAIN LATER TODAY THROUGH THURSDAY EVENING.
A SLOW MOVING COLD FRONT HAS CURRENTLY ENTERED EXTREME NW ARKANSAS AND WILL STRUGGLE TO MAKE ANY EASTWARD PROGRESS IN THE COMING DAYS. AS THE FRONT LIFTS BACK TO THE NORTH AS A WARM FRONT. TEMPERATURES WILL BEGIN TO WARM A FEW DEGREES EACH DAY TO ROUND OUT THE SHORT TERM AS A DRY RIDGE BUILDS INTO THE REGION.
LARGE UPPER LEVEL RIDGE DEVELOPS OVER THE GULF STATES LATER IN THE WEEK AND OVER THE WEEKEND. /CAB/ HIGH PRESSURE WILL CONTINUE TO DOMINATE THE REGION THROUGH THE REST OF THE WEEK AND WEEKEND. THROUGH SAT THE CNTR OF THE HIGH WILL REMAIN JUST OFF TO THE EAST AND THIS WILL CONTINUE TO LEAD TO SRLY FLOW AROUND 5-10 KTS BUT WINDS COULD BECOME LIGHTER AND VRB FOR THE MOST PART AS THE HIGH MOVES MORE OVER THE REGION.
1220 PM EDT WED JUL 8 2015 A COLD FRONT WILL CROSS THE REGION THIS MORNING.
WATER VAPOR LOOP INDICATED A SHORT WAVE TROUGH FROM SOUTHERN MAN TO SOUTHERN SASK. TROUGH WILL MOVE ACROSS THE FORECAST AREA TODAY. SHOWERS AND THUNDERSHOWERS WILL PRECEDE THE TROUGH THIS MORNING. PRECIPITATION WAS EITHER IN THE 700 THETA-E RIDGE OR IN THE GRADIENT. UPPER LEVEL RIDGE OVER PACIFIC NORTHWEST MOVES EAST AND FLATTENS TONIGHT THROUGH THU. ALSO RIDGE BUILDING OCCURS IN THE SOUTHERN STREAM OVER THE GREAT PLAINS STARTING THU THROUGH THE REST OF THE SHORT TERM.
AN UPPER LEVEL TROUGH WAS MOVING EAST ACROSS CENTRAL NORTH DAKOTA.
MODEL SOUNDINGS CONTINUE TO BE DEEPLY SATURATED ACROSS MUCH OF THE AREA THROUGH THURSDAY NEAR A WEAK UPPER LOW THAT IS MIGRATING VERY SLOWLY EASTWARD ACROSS SOUTHERN WYOMING AND NORTHERN COLORADO. THEN CHANCE POPS MOST EVERYWHERE THURSDAY BEFORE TAPERING THEM OFF THURSDAY EVENING AS THE WEAK MIDLEVEL CIRCULATION SLIDES OFF TO THE EAST AND WE SEE MODEST MID/UPPER RIDGING WORKING IN FROM THE SOUTHWEST.
1044 AM EDT WED JUL 8 2015 A HIGH PRESSURE AREA WILL BUILD SLOWLY EAST FROM THE GREAT LAKES LATER TODAY AND WILL BE OVER THE NORTH COUNTRY THROUGH THE END OF THE WEEK. EXPECTING INCREASING AMOUNTS OF SUNSHINE FOR THE REMAINDER OF TODAY AS HIGH PRESSURE BUILDS SLOWLY EAST FROM THE GREAT LAKES. QUICK UPDATE TO CAPTURE WIND AND TEMP TRENDS WITH COLD FRONT MOVING SOUTHEAST OF BTV WITH A BAND OF SHOWERS ALONG THE FRONT.
906 AM EDT WED JUL 8 2015 THE COLD FRONT THAT MOVED THROUGH YESTERDAY WILL STALL JUST SOUTH OF THE AREA TODAY. A WAVE OF LOW PRESSURE WILL RIDE ALONG THE FRONT ON THURSDAY.
945 AM EDT WED JUL 8 2015 A COLD FRONT WILL MOVE ACROSS THE REGION TODAY. HIGH PRESSURE WILL THEN BUILD TOWARD THE REGION FROM THE GREAT LAKES TONIGHT INTO THURSDAY.
1008 AM EDT FRI MAY 22 2015 SOME SHOWERS WILL ACCOMPANY A COLD FRONT ACROSS THE REGION TODAY. SHOWERS ARE EXPECTED TO DEVELOP ONCE AGAIN ALONG THE ENCROACHING COLD FRONT. COLD SURFACE RIDGING WILL BUILD IN THE WAKE OF THE FRONT WITH A CLEARING SKY AND DIMINISHED WIND. TEMPERATURES ARE PROJECTED AT OR JUST BELOW FREEZING EXPECTED ACROSS THE I-80 CORRIDOR. SOUTHWARD AND OVER THE RIDGES. WITH LOCALLY FREEZING TEMPS IN ELEVATED VALLEYS. HIGH PRESSURE WILL GRADUALLY MOVE EAST BY SATURDAY NIGHT WITH A GRADUAL WARMING TREND.
HIGH PRESSURE OVER THE AREA TODAY WITH PLENTY OF SUN AND TEMPERATURES A BIT WARMER AS WELL WITH MOST AREAS 70-75 FOR THE AFTERNOON HIGH. BUT DO RUN INTO THE HIGH WHICH WILL BE SIT ALONG THE CANADIAN BORDER. RESULT IS WARMER AND SUNNIER CONDITIONS NORTH SATURDAY AND A BIT CLOUDIER AND COOLER SOUTH.
731 AM EDT FRI MAY 22 2015 HIGH PRESSURE WILL BUILD IN FROM THE NORTH TODAY. HIGH PRES WILL RAPIDLY BUILD EAST AND SOUTH OVER THE FORECAST AREA IN THE WAKE OF THE COLD FRONT AND OFFSHORE LOW. THE HIGH WILL SETTLE OVER THE MID ATLC REGION TONIGHT. THE PUSH OF LOWER LEVEL COOLER AIR WILL STRENGTHEN THE INVERSION BETWEEN 3 AND 7 KFT. MUCH COOLER CONDITIONS TONIGHT AS WINDS DECOUPLE AWAY FROM THE BEACHES AND BARRIER ISLAND AND LOWS FALL INTO THE MID/UPPER 50S INLAND UNDER CLEAR SKIES. UNSEASONABLY DRY HIGH PRESSURE WILL SETTLE OVER THE AREA FROM THE NORTH SATURDAY WHILE AN UPPER RIDGE STRENGTHENS OVERHEAD.
746 AM EDT FRI MAY 22 2015 HIGH PRESSURE CENTERED OVER KENTUCKY AND TENNESSEE TODAY WILL BE OVER DELMARVA SATURDAY. THE HIGH WILL DIRECT DRY AIR INTO THE FORECAST AREA. HIGH PRESSURE WILL DIRECT DRY AND COOL AIR INTO THE FORECAST AREA THROUGH TONIGHT.
728 AM EDT FRI MAY 22 2015 SOME SHOWERS WILL ACCOMPANY A COLD FRONT ACROSS THE REGION TODAY. A POST DAWN UPDATE WAS ISSUED TO ADJUST FOR MORE NUMEROUS SHOWERS THAN ANTICIPATED WITH THE ENCROACHING COLD FRONT. COLD SURFACE RIDGING WILL BUILD IN THE WAKE OF THE FRONT WITH A CLEARING SKY AND DIMINISHED WIND. TEMPERATURES ARE PROJECTED AT OR JUST BELOW FREEZING EXPECTED ACROSS THE I-80 CORRIDOR. SOUTHWARD AND OVER THE RIDGES. WITH LOCALLY FREEZING TEMPS IN ELEVATED VALLEYS. HIGH PRESSURE WILL GRADUALLY MOVE EAST BY SATURDAY NIGHT WITH A GRADUAL WARMING TREND.
THINK THAT TEMPERATURES WILL MAKE IT TO THE LOW TO MID 70S EASILY BY THE AFTERNOON. CHATTANOOGA AIRPORT, TN 76 51 85 60 / 0 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 74 50 80 58 / 0 0 0 0 OAK RIDGE, TN 74 49 81 57 / 0 0 0 0 TRI CITIES AIRPORT, TN 72 46 79 51 / 0 0 0 0.
WITH MORNING LOWS DROPPING INTO THE LOWER TO MID 40S IN MANY LOCATIONS. HIGH PRESSURE REMAINS IN PLACE OVER MUCH OF THE SOUTHEASTERN CONUS. THIS SHOULD ALLOW HIGHS TO CLIMB INTO THE LOWER TO MID 70S THIS AFTERNOON. LOWERED DEWPOINTS A BIT INTO THE LOWER 40S TOWARD MIDDAY.
603 AM CDT FRI MAY 22 2015 THE TREND FOR THE DOMINATION OF RIDGING ALOFT CONTINUES WITH THIS FORECAST CYCLE. THE CLOSED LOW CURRENTLY OFF THE CENTRAL CALIFORNIA COAST IS SERVING AS THE GENESIS POINT FOR THE AMPLIFICATION OF THE RIDGE AND THE EVENTUAL IMPINGING SOUTH/SOUTHWESTERLY FLOW AND SOURCE REGION FOR VORTICITY LOBES ROTATING AROUND THE LOW. THE AFOREMENTIONED SCENARIO WILL SET UP A WEST TO EAST POP GRADIENT ACROSS THE WFO PAH FORECAST AREA, AS A MORE UNSTABLE THERMAL PROFILE COMES INTO PLAY IN THE WEST UNDER THE WEAKENING INFLUENCE OF THE DEPARTING UPPER RIDGE AXIS.
740 AM EDT FRI MAY 22 2015 HIGH PRESSURE WILL BUILD IN FROM THE MIDWEST AND BRING OVERALL PLEASANT WEATHER TO THE REGION THROUGH THE HOLIDAY WEEKEND.
940 AM PDT FRI MAY 22 2015 AN UPPER LOW WILL BRING A CHANCE OF SHOWERS TO THE REGION TODAY. THE WEATHER FOR THE HOLIDAY WEEKEND WILL BE SLIGHTLY COOLER THAN NORMAL. THE UPPER LOW HAS MOVED EAST OF THE AREA ALREADY AND NOW WE'RE GETTING NORTHERLY FLOW AROUND THE BACK SIDE OF IT. AMPLE MOISTURE WILL ALLOW CLOUDS TO BUBBLE UP SATURDAY AFTERNOON SO PARTLY CLOUDY A GOOD FORECAST FOR TOMORROW WITH SLIGHTLY WARMER TEMPS.
TO THE LOWER TO MID 60S ALONG AND SOUTH OF I-10. ALONG WITH WEAK/FLAT RIDGING SLIDING OVERHEAD. THAT WILL CHANGE SATURDAY AS THE FRONT SURGES NORTH THROUGH THE REGION AMID A STRENGTHENING LOW LEVEL JET AHEAD OF AN APPROACHING DEEP WRN CONUS TROF.
SOME OF THE LOWEST TEMPERATURES REPORTED EARLY TODAY INCLUDED, MONTGOMERY BELL. HIGH PRESSURE WILL RULE OUR WEATHER TODAY, PRODUCING LIGHT NORTHEAST FLOW AND PLEASANT AFTERNOON HIGHS IN THE 70S.
1031 AM CDT FRI MAY 22 2015 FRONTAL SYSTEM THAT BROUGHT THE COOLER TEMPERATURES THIS MORNING. TO THE LOWER TO MID 60S ALONG AND SOUTH OF I-10. ALONG WITH WEAK/FLAT RIDGING SLIDING OVERHEAD. THAT WILL CHANGE SATURDAY AS THE FRONT SURGES NORTH THROUGH THE REGION AMID A STRENGTHENING LOW LEVEL JET AHEAD OF AN APPROACHING DEEP WRN CONUS TROF.
HIGH PRESSURE WILL RESULT IN DRY CONDITIONS THROUGH THE BEGINNING OF THE WEEKEND. TEMPERATURES AND MOISTURE WILL INCREASE ACROSS CENTRAL INDIANA THROUGH THE COURSE OF THE WEEKEND AS A WARM FRONT SPREADS ACROSS THE REGION. SURFACE ANALYSIS LATE THIS MORNING SHOWS A WEAK TROUGH IN PLACE ACROSS NRN OHIO AND NRN INDIANA STRETCHING BACK CENTRAL ILLINOIS. HIGH PRESSURE WAS IN PLACE ACROSS THE UPPER MIDWEST AND THE TENNESSEE VALLEY. ALOFT RIDGING WAS IN PLACE OVER THE CENTRAL PLAINS. ONGOING FORECAST HIGHS IN THE LOWER 70S APPEAR RIGHT ON THE MARK. HIGH PRESSURE WILL KEEP CONDITIONS DRY INTO THE WEEKEND.
903 AM PDT FRI MAY 22 2015 The Memorial Day Weekend is expected to be warmer than average with afternoon temperatures in the 70s and 80s. The high CAPE/weak deep layer shear profiles support an enhanced heavy downpour threat for most thunderstorms this afternoon and evening. The highest threat areas will be near the Cascades as well as the Lewiston/Pullman region and the Cntrl Idaho Panhandle.
A LOW PRESSURE SYSTEM WILL MOVE ACROSS NORTHERN ARIZONA TODAY AND TONIGHT BRINGING SHOWERS AND THUNDERSTORMS TO THE REGION. ADDITIONAL DISTURBANCES WILL MOVE IN BEHIND THE LOW WITH CHANCES FOR SHOWERS EXTENDING THROUGH THE MEMORIAL DAY WEEKEND.
A WEAK TROUGH IS PARKED ACROSS SOUTH FLORIDA WITH A COL REGION OVER THE FLORIDA STRAITS AND CUBA. THE KEYS IS ON THE LEE SIDE OF AN UPPER TROUGH AXIS WHICH IS PROVIDING MUCH DRIER AIR. THE WEAK TROUGH TO OUR NORTH WILL LIFT OUT OVERNIGHT. WHILE AN AREA OF HIGH PRESSURE BUILDS ACROSS THE MID ATLANTIC COAST. THIS RIDGE WILL GRADUALLY INCREASE WINDS WINDS AND TURN WIND DIRECTION TO THE NORTHEAST TO EAST. THIS MID ATLANTIC RIDGE WILL CONTINUE TO BUILD IN INTENSITY AND GROW IN GIRTH.
HIGH PRESSURE WILL RESULT IN DRY CONDITIONS THROUGH THE BEGINNING OF THE WEEKEND. TEMPERATURES AND MOISTURE WILL INCREASE ACROSS CENTRAL INDIANA THROUGH THE COURSE OF THE WEEKEND AS A WARM FRONT SPREADS ACROSS THE REGION.
/ISSUED 352 AM EDT FRI MAY 22 2015/ A MUCH COOLER AND DRIER AIR MASS HAS SETTLED ACROSS NORTHERN AND CENTRAL GEORGIA EARLY THIS MORNING. HIGH PRESSURE WILL CONTINUE ACROSS THE FORECAST AREA THROUGH SATURDAY. THE HIGH CENTER IS CURRENTLY ACROSS SOUTHERN MO/NORTHERN AR. THE HIGH CENTER WILL SHIFT OFFSHORE THE MID ATLANTIC COAST BY SATURDAY AFTERNOON. WINDS ARE EXPECTED TO SHIFT TO THE NE/E AS THE HIGH SHIFTS EASTWARD BY THIS EVENING.
CONFLUENT LLVL FLOW THIS MORNING IN COMBINATION WITH A WEAK MID LEVEL S/W TROUGH OVER THE CWA AND DEEP MOISTURE LED TO PERSISTENT HEAVY SHOWERS AND THUNDERSTORMS ALONG THE NORTHERN COASTAL BEND. S/W TROUGH IS KICKING NE AND CONFLUENCY IS WANING. S/W RIDGING THIS AFTERNOON SHOULD KEEP PRECIP COVERAGE RATHER LIMITED THE REMAINDER OF THE DAY.
705 AM EDT FRI MAY 22 2015 AVIATION HIGH PRESSURE WILL BRING COOL AND DRY WEATHER TODAY AND SATURDAY.
949 AM EDT FRI MAY 22 2015 A COLD FRONT WILL APPROACH THE AREA TODAY BEFORE PASSING THROUGH TONIGHT.
SHOWERS HAVE BEEN INCREASING THE LAST COUPLE OF HOURS AND AND DRIFTING WEST FROM THE CASCADES INTO THE LOWLANDS FROM ABOUT EVERETT SOUTHWARD. WEAK LOW PRESSURE ALOFT WILL BRING A CHANCE OF SHOWERS. LOW CLOUDS HAVE BEEN SPREADING INTO THE INTERIOR EARLY THIS MORNING AND SHOULD COVER MOST OF THE LOWLANDS IN A FEW HOURS.
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
1037 AM EDT FRI MAY 22 2015 A COLD FRONT WILL APPROACH THE AREA TODAY BEFORE PASSING THROUGH TONIGHT.
A BROAD UPPER TROUGH WILL BRING MORE SHOWER ACTIVITY AND ISOLATED THUNDERSTORMS TO THE INTERIOR AGAIN TODAY. THE BULK OF THE ACTIVITY WILL SHIFT EASTWARD TODAY AS AN UPPER RIDGE PUMPS UP NEAR 130W AND THE FLOW ALOFT GOES NORTHERLY. A WEAK TROUGH IN THE NORTH FLOW WILL DEVELOP INTO A CLOSED LOW JUST TO OUR EAST ON SAT WITH THE SLIGHTEST POSSIBILITY FOR ISOLATED SHOWERS OVER THE HIGHER TERRAIN OF EASTERN TRINITY AND EASTERN MENDOCINO COUNTIES IN THE WRAP AROUND.
942 AM MST FRI MAY 22 2015 A FAIRLY STRONG UPPER LEVEL LOW WILL AFFECT THE REGION TODAY INTO EARLY SATURDAY BRINGING COOLER TEMPERATURES.
936 AM EDT FRI MAY 22 2015 HIGH PRESSURE WILL BUILD IN FROM THE MIDWEST AND BRING OVERALL PLEASANT WEATHER TO THE REGION THROUGH THE HOLIDAY WEEKEND.
A COLD UPPER LOW MOVING ACROSS SOUTHERN CALIFORNIA WILL BRING SCATTERED SHOWERS TODAY. A SECOND UPPER LOW AND A DEEP MARINE LAYER WILL CONTINUE THE COOL WEATHER THROUGH THE WEEKEND.
A FAIRLY STRONG UPPER LEVEL LOW WILL AFFECT THE REGION TODAY INTO EARLY SATURDAY BRINGING COOLER TEMPERATURES. TODAY AND SATURDAY WILL SEE THE MAIN UPPER LEVEL LOW SWING THROUGH ARIZONA INTO THE CENTRAL ROCKIES WITH THE MAJORITY OF OUR CWA STAYING DRY. CURRENT SATELLITE IMAGERY SHOWS THE LOW CENTER RIGHT OVER LOS ANGELES WITH MID AND UPPER LEVEL MOISTURE WRAPPING AROUND MAINLY ON THE NORTHERN PERIPHERY OF THE LOW. A 110 KT UPPER JET MAX ROUNDING THE BASE OF THE TROUGH WILL LIFT NORTHEASTWARD TODAY WITH A PRONOUNCED DRY SLOT MOVING THROUGH SOUTHWEST ARIZONA BY 18Z AND INTO NORTHEAST ARIZONA BY 00Z SATURDAY. THE LOW CENTER WILL REACH INTO THE CENTRAL ROCKIES SATURDAY WITH INCREASINGLY SUBSIDENT NORTHWEST FLOW ALOFT TAKING OVER ACROSS OUR REGION. THE LARGE SCALE TROUGH WILL HOWEVER STILL REMAIN SPREAD OVER THE DESERT SOUTHWEST KEEPING RELATIVELY COOL AIR IN PLACE.
1053 AM EDT FRI MAY 22 2015 HIGH PRESSURE WILL BUILD IN FROM THE NORTH TODAY. COOLER AND DRIER HIGH PRESSURE CENTERED OVER THE MID MISSISSIPPI VALLEY CONTINUES TO BRIDGE ACROSS THE APPALACHIANS AND BUILD INTO THE REGION. HIGHS WILL BE MUCH COOLER THAN YESTERDAY. MUCH COOLER CONDITIONS AS WINDS DECOUPLE AWAY FROM THE BEACHES AND BARRIER ISLAND AND LOWS FALL INTO THE MID/UPPER 50S INLAND UNDER CLEAR SKIES. UNSEASONABLY DRY HIGH PRESSURE WILL SETTLE OVER THE AREA FROM THE NORTH SATURDAY WHILE AN UPPER RIDGE STRENGTHENS OVERHEAD.
MUCH COOLER AND DRIER AIR HAS FILTERED INTO CENTRAL ALABAMA EARLY THIS MORNING. THE DRY AIR WILL CONTINUE TO BE ADVECTED SOUTHWARD IN THE NORTHERLY SURFACE FLOW ASSOCIATED WITH THE 1024MB RIDGE CENTERED OVER SOUTHERN MISSOURI. UPPER HEIGHTS RISE QUICKLY BY SATURDAY WHICH WILL ALLOW MUCH WARMER AFTERNOON TEMPERATURES IN THE 80S.
AN UPPER LOW MOVING NORTH OUT OF EASTERN COLORADO ALONG WITH A SECOND LOW APPROACHING THE FOUR CORNERS AREA WILL BRING SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS NORTHWARD ACROSS OUR FORECAST AREA. A DEEP UPPER LOW WAS PUSHING INTO SOUTHERN CALIFORNIA THIS HOUR. THE UPPER LOW WILL PUSH INTO SOUTHERN NEVADA EARLY THIS AFTERNOON. A PIECE OF ENERGY OUT AHEAD OF THE UPPER LOW. THE HIGHEST POPS WILL BE NEAREST THE MOUNTAINS WITH UPSLOPE FLOW. THE UPPER LOW MOVES INTO COLORADO ON SATURDAY AND PUSHES THE EASTERN ENERGY INTO SOUTHEAST MONTANA. UPSLOPE FLOW WILL KEEP SCATTERED SHOWERS GOING OVER WESTERN AND CENTRAL ZONES WITH THE HIGHEST POPS OVER THE WEST. MORE CLOUDS AND NORTHEAST WINDS AT 850MB WILL PROVIDE A COOLER DAY ON SATURDAY.
TEMPERATURES ARE RUNNING A BIT COOLER THAN FORECAST. 16 /ISSUED 331 AM CDT FRI MAY 22 2015/ MUCH COOLER AND DRIER AIR HAS FILTERED INTO CENTRAL ALABAMA EARLY THIS MORNING. THE DRY AIR WILL CONTINUE TO BE ADVECTED SOUTHWARD IN THE NORTHERLY SURFACE FLOW ASSOCIATED WITH THE 1024MB RIDGE CENTERED OVER SOUTHERN MISSOURI. UPPER HEIGHTS RISE QUICKLY BY SATURDAY WHICH WILL ALLOW MUCH WARMER AFTERNOON TEMPERATURES IN THE 80S.
704 AM EDT FRI MAY 22 2015 LOW PRESSURE WILL MOVE AWAY INTO THE NORTHERN ATLANTIC TODAY.
1226 PM EDT FRI MAY 22 2015 HYDRO HIGH PRESSURE WILL BRING COOL AND DRY WEATHER TODAY AND SATURDAY.