Aikyam-Lab/Synoptic-Bench huggingface dataset:
WHICH WILL IN TURN MINIMIZE HOW WIDESPREAD THE LOW RH VALUES GET AND AMOUNT OF MIXING FOR STRONGER GUSTS. FIRST IN A SERIES OF S/WV TROUGHS PROGD TO AFFECT FAR NORTHERN PARTS OF OKLAHOMA TONIGHT WITH SCATTERED SHOWERS AND PERHAPS A FEW STORMS. THIS S/WV WILL BRING A WEAK COLD FRONT OVER THE REGION WHICH IS EXPECTED TO STALL AS HIGHER AMPLITUDE TROUGH APPROACHES LATE SATURDAY.
TODAY THROUGH SATURDAY NIGHT WATER VAPOR SHOWS RATHER COMPLEX UPPER LOW OVER THE MT/WY REGION. TROF EXTENDS FROM THE SWRN ND THROUGH SERN WY WITH ARCTIC BOUNDARY OVER NERN MT. UPPER LOW WILL SHIFT EWD INTO WRN SD BY AFTN. BUT AS UPPER LOW BECOMES MORE CLOSED OFF OVER WRN SD IN THE AFTN AND ARCTIC BOUNDARY SLIDES IN FROM THE NORTH.
BAND OF SNOW IN UPPER DEFORMATION ZONE ON THE NW FLANK OF UPR TROF RAPIDLY INTENSIFIED DURING THE PAST COUPLE HRS. TONIGHT AND FRIDAY THE MAIN FOCUS OF THE FORECAST TO BE ON THE DIMINISHING TRENDS OF BOTH SNOW AND WIND AS A STRONG AREA OF LOW PRESSURE BEGINS TO PULL AWAY FROM THE REGION. THE 19Z MSAS SURFACE ANALYSIS SHOWED THE LOW PRESSURE OVER SW LOWER MI WITH A CONTINUED TRACK TO THE NORTHEAST. A RIDGE OF HIGH PRESSURE EXTENDED FROM WESTERN ONTARIO SOUTHWEST THROUGH NORTHERN MN TO THE CENTRAL HIGH PLAINS. THE RIDGE OF HIGH PRESSURE IS FORECAST TO BUILD INTO THE WESTERN GREAT LAKES LATER TONIGHT AND BRING CLEARING SKIES/ DIMINISHING WINDS TO NE WI. TO THE LOWER TO MIDDLE 40S ACROSS FAR NORTH-CENTRAL WI WHERE NO SNOW FELL FROM THE DEPARTED STORM.
344 AM CDT FRI MAR 25 2016 A return to southeast winds will bring warmer temperatures today.
649 AM EDT FRI MAR 25 2016 LOW LEVEL MOISTURE LINGERS IN THE WAKE OF A COLD FRONT TODAY. A HIGH PRESSURE SYSTEM ARRIVES FOR THE WEEKEND.
THE NORTHERN TROUGH IS EXTENDING FROM MONTANA INTO THE NEBRASKA PANHANDLE WITH H7 AXIS ACROSS EASTERN COLORADO. A COLD FRONT IS IN THE PROCESS OF MOVING ACROSS CENTRAL WYOMING. PREFRONTAL TROUGH SHIFTS ACROSS OUR CWA DURING THE DAY TODAY AHEAD OF APPROACHING FRONT AND THIS SHIFTS AXIS OF BETTER WAA FURTHER SOUTH AND EAST. THE FIRST COLD FRONT WILL BE COMPLETELY THROUGH OUR CWA ON SATURDAY WITH A SECOND FRONT DROPPING ACROSS THE REGION DURING THE AFTERNOON.
BEFORE SHIFTING HIGH PRESSURE HELPS TO END ANY FURTHER DEVELOPMENT. WHILE LONGWAVE TROUGH BECOMES MORE AMPLIFIED. WHERE STRONGER ONSHORE FLOW WILL HELP KEEP COOLER CONDITIONS IN PLACE.
650 AM EDT FRI MAR 25 2016 AVIATION SECTION HAS BEEN UPDATED BELOW HIGH PRESSURE WILL STRENGTHEN OVER THE REGION TODAY AND TEMPS WILL TAKE A DIP AS WINDS BECOME NORTHERLY.
140 AM EDT FRI MAR 25 2016 WIDESPREAD SHOWERS WILL MOVE EAST TONIGHT AHEAD OF A COLD FRONT. HIGH PRESSURE AND A DRIER AND COOLER AIRMASS WILL BUILD INTO THE REGION FOR FRIDAY. WARMER TEMPERATURES WILL RETURN FOR THE WEEKEND AS A SOUTHERLY FLOW DEVELOPS. COLD FRONT IS CURRENTLY MOVING THROUGH FAR WESTERN COUNTIES. WE WILL START TO GET INTO SOME RETURN FLOW THROUGH THE DAY ON SATURDAY AS THE HIGH PUSHES OFF TO THE EAST.
THE FRONT WILL STALL OUT ALONG THE GULF COAST THIS EVENING BEFORE LIFTING BACK NORTH ON SATURDAY AFTERNOON AS A WARM FRONT.
415 AM CDT FRI MAR 25 2016 YESTERDAY'S FRONTAL PASSAGE HAS BROUGHT US COOLER TEMPERATURES THIS MORNING.
403 AM CDT FRI MAR 25 2016 SATELLITE IMAGERY OVERLAID OVER GFS40 MODEL CONFIRMED UPPER LEVEL RIDGING OVER THE ATLANTIC AND PACIFIC OCEANS WITH BROAD TROUGHING ACROSS THE UNITED STATES. A COLD FRONT CONTINUED TO MARCH TO THE EXTREME EASTERN UNITED STATES WHERE ACTIVE WEATHER COULD BE FOUND. A BEAUTIFUL DAY IS IN STORE FOR THE AREA AS SKIES WILL REMAIN MOSTLY CLEAR WITH SLIGHTLY COOLER THAN NORMAL HIGHS EXPECTED.
EXPECT DRY AND WARMER CONDITIONS THROUGH FRIDAY. A LOW PRESSURE SYSTEM WILL CROSS NORTHERN ARIZONA CAUSING A DIP IN TEMPERATURES AND A SLIGHT CHANCE FOR SHOWERS NEAR THE FOUR CORNERS. A WEAK HIGH PRESSURE RIDGE WILL BRING DRY CONDITIONS AND ABOVE NORMAL HIGH TEMPERATURES TODAY. THIS SYSTEM WILL PUSH A COLD FRONT INTO NORTHERN ARIZONA BRINGING COOLER DAYTIME TEMPERATURES AND BREEZY NORTH TO NORTHWEST WINDS.
136 AM EDT FRI MAR 25 2016 A COLD FRONT WILL MOVE THROUGH THE REGION OVERNIGHT AND BRING A COOLER AIRMASS TO END THE WORK WEEK. COLD FRONT CROSSING CENTRAL PA AT THIS HOUR. FRIDAY WILL BE SEVERAL DEG COOLER THAN TODAY OVER ABOUT THE WESTERN HALF OF THE CWA.
CLEAR AND COOL NIGHT AHEAD AS HIGH PRESSURE SETTLES INTO THE AREA IN THE WAKE OF OUR LATEST FRONTAL PASSAGE. GUSTY NWLY WINDS ARE USHERING DRIER AND COOLER AIR INTO THE REGION WITH TEMPERATURES THIS AFTN RANGING FM THE LOWER 60S ACRS THE LAKES REGION TO THE MIDDLE 70S ACRS LOWER ACADIANA. TEMPERATURES WILL QUICKLY FALL THIS EVENING AS THE COOLER AIRMASS SETTLES OVER THE REGION. SLY WINDS IN ADVANCE OF THE LOW WILL BRING A WARM FRONT BACK NORTH ACRS THE AREA.
THE SAINT LAWRENCE VALLEY OF NEW YORK AND AREAS EAST OF THE GREEN MOUNTAINS WILL HAVE THE BEST CHANCE OF SEEING LIGHT FREEZING RAIN AND POTENTIALLY SOME LIGHT ICE ACCUMULATIONS. HIGH PRESSURE BUILDS IN FOR THE WEEKEND AND BRINGS SUNSHINE AND DRIER CONDITIONS. THE OTHER AREA OF CONCERN WILL BE THE NORTHEAST KINGDOM WHERE TEMPERATURES NEAR TO BELOW FREEZING REMAIN. EXPECT COLD FRONT ASSOCIATED WITH THIS SYSTEM TO MOVE FROM WEST TO EAST DURING THE LATE MORNING MEANING THAT MAX TEMPERATURES WILL OCCUR IN FIRST HALF OF THE DAY FOR WESTERN PORTIONS OF FORECAST AREA. WIND GUSTS OF 20-30 KTS POSSIBLE AHEAD OF COLD FRONT IN STRONG SOUTHERLY FLOW.
A COLD FRONT WILL PUSH THROUGH THE PANHANDLES TONIGHT. ALL EYES THEN TURN TO A VIGOROUS UPPER LEVEL SHORT WAVE TROUGH WHICH WILL BE MOVING SOUTHEAST THROUGH UTAH AND COLORADO BY EARLY SATURDAY MORNING. THIS SHORT WAVE TROUGH IS EXPECTED TO MOVE SOUTHEAST ACROSS NORTHERN NEW MEXICO AND ACROSS THE PANHANDLES SATURDAY AFTERNOON AND SATURDAY NIGHT. AFTER A COOL START EASTER MORNING WITH READINGS RANGING FROM THE LOWER 20S IN THE WESTERN OKLAHOMA PANHANDLE TO THE UPPER 30S IN THE SOUTHEAST TEXAS PANHANDLE.
326 AM CDT FRI MAR 25 2016 Ridge of high pressure currently located along the Mississippi River will slide eastward today, resulting in light winds and clearing skies. Abundant sunshine will prevail across the board by afternoon, with high temperatures mainly in the lower 50s.
OTHERWISE VFR CONDITIONS WILL PREVAIL AS HIGH PRESSURE BUILDS INTO THE REGION. TODAY THROUGH FRIDAY NIGHT COLD FRONT THAT BROUGHT RAIN AND THUNDERSTORMS TO THE STATE OVERNIGHT AND EARLY THIS MORNING IS WELL EAST OF THE MISSISSIPPI RIVER THIS AFTERNOON. WITH AT OR BELOW FREEZING CONDITIONS NOTED ACROSS ROUGHLY THE TWO NORTHERN ROWS OF COUNTIES. WINDS WILL SWITCH TO THE SOUTHEAST AS THE AREA OF HIGH PRESSURE BEGINS DRIFTING EASTWARD FRIDAY NIGHT INTO SATURDAY. TEMPERATURES ON FRIDAY WILL BE BELOW NORMAL WITH TEMPS A BIT WARMER FRIDAY NIGHT THOUGH STILL AT OR BELOW NORMAL.
137 AM EDT FRI MAR 25 2016 A COLD FRONT WILL BRING WIDESPREAD RAIN SHOWERS AND WIND GUSTS TONIGHT. ALTHOUGH AN ISOLATED SHOWER COULD LINGER IN THE RIDGES DURING THE MORNING HOURS. FRIDAY NIGHT IS WHEN SKIES WILL TRULY CLEAR OUT WITH HIGH PRESSURE BUILDING INTO THE REGION. HIGH PRESSURE AND RISING UPPER LEVEL HEIGHTS WILL ALLOW FOR A DRY AND WARMER DAY SATURDAY WITH PLENTY OF SUNSHINE.
723 AM CDT WED AUG 5 2015 LARGE HUDSON BAY CLOSED LOW SENDING A BROAD TROUGH INTO THE EASTERN CONUS. RIDGING INTO THE CENTRAL CANADIAN PLAINS AND A CLOSED LOW OVER BRITISH COLUMBIA WITH TROUGHING INTO NORTHERN CALIFORNIA. UPPER HIGH CENTERED OVER THE DESERT SOUTHWEST. WEAK UPPER WAVE MOVING ACROSS MISSOURI AND A WAVE ROUNDING THE RIDGE INTO THE CENTRAL PLAINS OF CANADA. SUN WILL BE OUT LATE THIS MORNING AND WITH THAT TEMPERATURES EXPECTED TO REBOUND INTO THE LOW 80S. ADDITIONAL DEVELOPMENT ALONG A COLD FRONT THURSDAY AFTERNOON WILL BE THE FIRST CHALLENGE FOR THIS PERIOD. A TRAILING COLD FRONT FROM THE LOW WILL MOVE SOUTHEAST ACROSS WESTERN INTO CENTRAL NEBRASKA DURING THE DAY THURSDAY. WITH MID LEVEL WESTERLIES INCREASING TO NEAR 45 KTS WITH THE PASSAGE OF THE TROUGH ALOFT.
A DRY ZONAL FLOW WILL SET IN AND THE REGION WILL SEE THE SUN AGAIN AS THE UPPER LEVEL TROUGH MOVES EAST. MINIMUM TEMPERATURES TONIGHT WILL FALL JUST BELOW NORMAL FOR A MUCH COOLER NIGHT THAN LAST.
418 AM PDT WED AUG 5 2015 WARMER TEMPERATURES RETURN TODAY AS YESTERDAY/S WEATHER SYSTEM MOVES EAST. ANOTHER LOW PRESSURE SYSTEM WILL BRING A RETURN OF MILDER TEMPERATURES ALONG WITH A CHANCE FOR SHOWERS AND THUNDERSTORM BEGINNING THURSDAY NIGHT. TEMPERATURES ARE A LITTLE COOLER COMPARED TO 24 HOURS AGO AND RANGE FROM THE 40S IN THE MOUNTAIN VALLEYS TO THE 50S AND 60S ELSEWHERE. IN ADDITION TO THE AIRMASS WARMING ASSOCIATED WITH THE RIDGE, SLACKENING ONSHORE GRADIENTS WILL ALSO CONTRIBUTE TO WARMING.
Models indicate the upper high will move slowly back eastward today. Plus, the thermal ridge at 850 mb will again expand east into our area this afternoon and help produce high temperatures mainly in the 100 to 103 range.
WE'LL FIRST NEED TO WORK THE UPPER LEVEL RIDGE THROUGH THE AREA. LOWS TONIGHT WILL BE WARMER THAN RECENT NIGHTS. AND SLIGHTLY COOLER ACROSS WEST CENTRAL WI. SHOWERS AND THUNDERSTORMS MAY BE ONGOING AT THE START OF THE PERIOD FROM THE EASTERN DAKOTAS INTO WESTERN AND CENTRAL MN ALONG THE WARM FRONT. A PLUME OF STEEPER MID LEVEL LAPSE RATES WILL LIFT INTO SWRN MN WHILE THE APPROACHING SHORT WAVE TROUGH SPREADS STRONGER MID LEVEL WINDS ACROSS THE CENTRAL PLAINS INTO SRN MN.
A BUILDING MEAN RIDGE OVER THE REGION WILL RESULT IN A WARMING TREND AND DRY CONDITIONS THROUGH THE END OF THE WEEK.
945 AM PDT WED AUG 5 2015 A HIGH PRESSURE RIDGE OVER SOUTHERN CALIFORNIA WILL ONCE AGAIN BRING MAINLY CLEAR SKIES AND VERY WARM WEATHER TO THE REGION THROUGH THIS EVENING.
CHATTANOOGA AIRPORT, TN 94 72 86 72 / 50 60 80 50 KNOXVILLE MCGHEE TYSON AIRPORT, TN 92 69 82 69 / 40 50 80 60 OAK RIDGE, TN 91 70 81 69 / 40 60 80 50 TRI CITIES AIRPORT, TN 90 68 80 67 / 30 50 80 70.
WHILE AN AREA OF MID LEVEL UPPER FORCING PUSHES INTO WEST ALABAMA THIS AFTERNOON IN ADVANCE OF A SHORT WAVE TROF. BETTER RAIN CHANCES WILL COME LATER TONIGHT AND THURSDAY AS THE MAIN SHORT WAVE TROF PUSHES THROUGH THE AREA. WIDESPREAD CONVECTION EXPECTED ON THURSDAY AS A FAIRLY STRONG SHORT WAVE TROF ENTERS THE AREA.
Meanwhile, a weak upper level ridge of high pressure is moving eastward across the Central and Southern Rockies. Near the surface, an area of low pressure is settled across the Oklahoma and Texas panhandles. NAM only has lower 90s, while other models have warmer temps.
LATEST GUIDANCE HAS COME IN MORE IN LINE WITH THE OLD EUROPEAN WITH RESPECT TO TRACK OF UPPER-LEVEL IMPULSE COMING DOWN FROM THE MID-MISSOURI VALLEY AND ITS ASSOCIATED LOW-LEVEL CYCLONE TRANSVERSING THE BAROCLINIC ZONE.
with a ridge axis along the front range of the Rocky's.
1137 AM EDT WED AUG 5 2015 LOW PRESSURE ALOFT AND ITS ASSOCIATED COOL CYCLONIC FLOW WILL PRODUCE A CHANCE OF SHOWERS AND THUNDERSTORMS TODAY.
A TROUGH OF LOW PRESSURE EXTENDED FROM THE COLORADO FRONT RANGE.
COULD SEE SOME EARLY MORNING ACTIVITY IN FAR NORTHERN CWA AS DEVELOPING ELEVATED WARM FRONT MOVES THROUGH. WITH COLD FRONT EXTENDING SOUTHWARD INTO THE WESTERN PART OF OUR FORECAST AREA BY 07/00Z. GREATER QUESTIONS ON EXACT PLACEMENT OF WARM FRONT.
THEN, AS THE AFOREMENTIONED SHEARED TROUGH AMPLIFIES AND MOVES CLOSER TO THE TN VALLEY TONIGHT, MORE WIDESPREAD SHOWERS AND THUNDERSTORMS SHOULD DEVELOP AND MOVE SOUTHEAST THIS EVENING. A MARKED INCREASE IN BULK SHEAR IS NOTED (LIKELY DUE TO THE ENHANCEMENT OF SHEAR WITH THE TROUGH ITSELF). A BREAK IN THE CONVECTIVE ACTIVITY SHOULD OCCUR ON EARLY THURSDAY MORNING BEFORE DISCRETE CELLS FORM AHEAD OF WHAT APPEARS TO BE A VORT MAX AHEAD OF THE TROUGH AXIS.
A LOW PRESSURE SYSTEM WILL BRING SCATTERED SHOWERS AND ADDITIONAL COOLING TO THE AREA TODAY.
1020 AM EDT WED AUG 5 2015 HIGH PRESSURE WILL MAINTAIN CONTROL OF THE WEATHER TODAY. AN AREA OF LOW PRESSURE WILL MOVE EAST ACROSS THE REGION FROM TONIGHT THROUGH THURSDAY NIGHT.
1041 AM EDT WED AUG 5 2015 WEAK HIGH PRESSURE BUILDS OVER THE AREA INTO THURSDAY.
WEDNESDAY MORNING AND AFTERNOON A RATHER POTENT SERIES OF UPPER LEVEL IMPULSES EMERGING FROM A TROUGH OVER THE WEST COAST MOVES EASTWARD ACROSS MONTANA/WYOMING.
653 AM CDT WED AUG 5 2015 VFR WITH LIGHT WINDS EXPECTED TO CONTINUE AS UPPER RIDGE GRADUALLY EXPANDS ACROSS THE SOUTHWEST. /ISSUED 345 AM CDT WED AUG 5 2015/ THE BIG STORY PICTURE REMAINS THE SAME TODAY AND TONIGHT WITH AN UPPER LEVEL HIGH PRESSURE RIDGE GRADUALLY EXPANDING FROM THE SOUTHERN ROCKIES ACROSS THE SOUTHERN PLAINS. AN IMPULSE ON THE PERIPHERY OF THE RIDGE WILL REMAIN OVER THE MISSOURI VALLEY. RMCQUEEN UPPER HIGH WILL CONTINUE ITS HOLD SQUARELY OVER THE SOUTHERN PLAINS THURSDAY.
FORECAST AREA WILL COME MORE UNDER THE INFLUENCE OF THE WESTERN CANADA UPPER LEVEL TROUGH TODAY AS IT CONTINUES ITS SLOW PATH ALONG THE CANADIAN BORDER.
706 AM EDT WED AUG 5 2015 WEAK HIGH PRESSURE BUILDS OVER THE AREA INTO THURSDAY.
THE HOT UPPER RIDGE WILL BE EXPANDING BACK OVER THE MS RIVER VALLEY.
1122 AM CDT WED AUG 5 2015 333 AM CDT HIGH PRESSURE OVER THE GREAT LAKES WILL CONTROL WEATHER THROUGH THURSDAY WITH GENERALLY LIGHT WINDS OUTSIDE OF AFTERNOON LAKE BREEZES. ANY CONVECTION ON THE PERIPHERY OF THE UPPER RIDGE OVER THE SOUTHERN PLAINS LOOKS TO STAY SOUTH AND WEST OF OUR AREA. TEMPS SHOULD REMAIN NEAR SEASONAL NORMS IN THE LOWER 80S. IZZI 333 AM CDT LARGELY LOOKING FOR A CONTINUATION OF THE CURRENT WEATHER PATTERN TROUGH THE WEEKEND. STRONG UPPER LOW OVER BRITISH COLUMBIA WILL TRACK EASTWARD ACROSS SOUTHERN CANADA WITH GUIDANCE SUGGESTING A SHORT WAVE TROUGH ON THE SOUTHERN PERIPHERY OF THIS WAVE PROVIDING FOCUS FOR MCS OVER THE PLAINS THURSDAY NIGHT.
THURSDAY LOW PRESSURE WILL MOVE INTO THE LOWER OHIO VALLEY AS THE HIGH MOVES EAST TO NEW ENGLAND.
1233 PM EDT WED AUG 5 2015 HIGH PRESSURE WILL MAINTAIN FAVORABLE AVIATION CONDITIONS THROUGH THE TAF PERIOD. TODAY AND TONIGHT UPPER LEVEL NEGATIVE PV ADVECTION TODAY WITH UPPER LEVEL RIDGE AXIS CRESTING OVER THE CENTRAL GREAT LAKES TONIGHT. 850 MB TEMPS JUST SLIGHTLY COOLER TODAY COMPARED TO YESTERDAY.
WITH AN ASSOCIATED WEAK COLD FRONT DROPPING INTO NORTHERN UTAH. A RIDGE OF HIGH PRESSURE WILL BUILD OVER THE REGION ON THURSDAY.
617 AM CDT WED AUG 5 2015 UPPER AIR DATA ANALYSIS HAS A CLOSED LOW/TROUGH OVER WESTERN QUEBEC THROUGH THE GREAT LAKES. HIGH PRESSURE OVERHEAD ACROSS THE FORECAST AREA WITH PARTLY CLOUDY SKIES THE RULE. TEMPERATURES AT 2 AM WERE IN THE LOWER/MIDDLE 50S ACROSS THE SAND COUNTRY OF CENTRAL WI. CENTER OF HIGH PRESSURE MOVES EAST OF THE REGION INTO THE GREAT LAKES BUT KEEPS ITS INFLUENCE OVER THE AREA WITH MOSTLY SUNNY SKIES RESULTING. QUIET WEATHER CONTINUES INTO TONIGHT WITH HIGH PRESSURE HOLDING ACROSS THE AREA. LOOK FOR LOWS IN THE MIDDLE 50S TO THE LOWER 60S.
THE AXIS OF WEAK ATLANTIC RIDGING IS POSITIONED OVER CENTRAL FLORIDA. DEEP TROUGHING REMAINS CENTERED OVER EASTERN CANADA. WHICH HAS KEPT RIDGING SUPPRESSED TO THE BAHAMAS AND SOUTH FL.
65", which is on the lower end of our average range for this time of year, but will still be sufficient for scattered convection today, especially with our surface dewpoints staying in the 70s.
735 AM EDT WED AUG 5 2015 AN UPPER LEVEL TROUGH WILL REMAIN PARKED OVER THE NORTHEAST CONUS THROUGH THE END OF THE WEEK.
CURRENT WATER VAPOR IMAGERY SHOWS AN UPPER LEVEL LOW OVER NORTHERN CALIFORNIA WITH GOOD JET SUPPORT.
SHOULD BE A BIT COOLER NEAR THE LAKE DUE TO THE EAST TO NORTHEAST WINDS. BUT OTHERWISE VFR CONDITIONS SHOULD PREVAIL THROUGH THURSDAY UNDER HIGH PRESSURE. HIGH PRESSURE WILL REMAIN OVER THE GREAT LAKES WITH WEAK NWLY FLOW ALOFT. JUST TO THE SOUTH AND WEST OF THE HIGH IN THE SFC-925 MB LAYER. HIGHS IN THE LOWER 80S OVER SOUTH CENTRAL WI AND MID TO UPPER 70S OVER ERN WI. DRY HIGH PRESSURE WILL HOLD STRONG OVER SOUTHERN WI THROUGH THURSDAY EVENING. LIGHT EASTERLY WINDS WILL ALLOW FOR A LAKE BREEZE AND MAX TEMPS RANGING FROM THE UPPER 70S NEAR THE LAKE TO THE LOWER 80S WELL INLAND.
LIGHTER WIND REGIME INDICATED WITH ATLANTIC RIDGE AXIS BUILDING ACROSS SOUTHERN SECTIONS. RIDGE AXIS WILL LINGER NEAR TO JUST NORTH OF LAKE OKEECHOBEE WITH LIGHTER S/SW GRADIENT WINDS RESULTING (10 KNOTS OR LESS).
DESPITE THE COOLER/DRIER AIR BEHIND THE OUTFLOW BOUNDARY IN NORTHERN PARTS OF THE HEAT ADVISORY. AND INCREASING HEIGHTS ASSOCIATED WITH A BUILDING MID LEVEL RIDGE WILL RESULT IN INCREASING TEMPERATURES.
1046 AM MDT WED AUG 5 2015 THE HIGH PRESSURE IN PLACE OVER THE LAST 24 HOURS WILL FLATTEN TODAY AS AN UPPER LEVEL TROUGH SWEEPS BY NORTHERN UTAH AND COLORADO THIS EVENING. THE PRESSURE GRADIENT SLACKENS ON THURSDAY AS HIGH PRESSURE AMPLIFIES BACK OVER THE REGION.
LENNING 333 AM CDT HIGH PRESSURE OVER THE GREAT LAKES WILL CONTROL WEATHER THROUGH THURSDAY WITH GENERALLY LIGHT WINDS OUTSIDE OF AFTERNOON LAKE BREEZES. ANY CONVECTION ON THE PERIPHERY OF THE UPPER RIDGE OVER THE SOUTHERN PLAINS LOOKS TO STAY SOUTH AND WEST OF OUR AREA. TEMPS SHOULD REMAIN NEAR SEASONAL NORMS IN THE LOWER 80S. IZZI 333 AM CDT LARGELY LOOKING FOR A CONTINUATION OF THE CURRENT WEATHER PATTERN TROUGH THE WEEKEND. STRONG UPPER LOW OVER BRITISH COLUMBIA WILL TRACK EASTWARD ACROSS SOUTHERN CANADA WITH GUIDANCE SUGGESTING A SHORT WAVE TROUGH ON THE SOUTHERN PERIPHERY OF THIS WAVE PROVIDING FOCUS FOR MCS OVER THE PLAINS THURSDAY NIGHT.
A MODEST WARMING TREND IS FORECAST FOR WEDNESDAY AND THURSDAY AS HIGH PRESSURE RIDGE BUILDS OVER THE REGION.
BUT SKIES SHOULD CLEAR THIS AFTN AS RIDGE STRENGTHENS ALOFT. COOLER SSTS IN THE NEARSHORE WATERS WILL KEEP WINDS IN SCEC RANGE.
HIGHS WITH RAIN AND CLOUDS HOLD IN THE LOW TO MID 80S WITH OVERNIGHT LOWS FALLING TO THE 60S AS SKIES SLOWLY CLEAR AND COOLER AIR MASS PUSHES IN FROM THE NORTHEAST. WEAK UPPER RIDGING BUILDING INTO THE STATE SHOULD BRING DRIER AND WARMER CONDITIONS FOR THURSDAY, LIKELY SEVERAL DEGREES WARMER THAN TODAY.
EXPECT A VERY WARM AND DRY DAY ACROSS NORTHERN ARIZONA AS HIGH PRESSURE IS CENTERED OVER OUR STATE.
ADDITIONAL RAINFALL AND CLOUD COVER WILL HELP KEEP TEMPERATURES 3-5 DEGREES COOLER IN MOST LOCATIONS THAN YESTERDAY. A TROUGH IS SWINGING ACROSS THE MID MISSISSIPPI RIVER VALLEY RESULTING IN RAIN AND THUNDERSTORMS ACROSS NORTHWEST TENNESSEE. A PIECE OF MID LEVEL ENERGY AHEAD OF THE MAIN TROUGH WILL MOVE ACROSS NORTH ALABAMA THIS AFTERNOON. THE MAIN TROUGH WILL BRING MORE WIDESPREAD RAIN AND STORMS TONIGHT AS IT CROSSES THE TENNESSEE VALLEY. BUT RAIN CHANCES WILL INCREASE LATER TONIGHT AND THURSDAY AS A SHORT WAVE TROF PASSES THROUGH THE AREA.
A MODEST WARMING TREND IS FORECAST FOR TODAY AND THURSDAY AS A WEAK HIGH PRESSURE RIDGE BUILDS OVER THE REGION.
TROF OVER ERN NOAM WL EDGE EWD A BIT AND WEAKEN THE NEXT COUPLE DAYS. UPR ANTICYCLONE WITHIN THE SUBTROPICAL RIDGE WL SHIFT FM THE DESERT SW TO THE SRN PLAINS. THE LARGE SCALE CHGS WL RESULT IN A PATTERN WITH TROFFING INVOF BOTH COASTS. AND RIDGING ACRS THE CENTRAL CONUS.
THE ISSUE HAS BEEN THE RIDGE ALOFT OVER TX/LA AND THIS WILL CONTINUE TO BE OUR BIGGEST PROBLEM.
WARM FRONT IS DRAPED NORTH TO SOUTH ACROSS THE CWA. UPPER SYSTEM WILL PUSH EAST OF THE CWA THURSDAY MRNG WITH DRIER AND SLIGHTLY COOLER AIR FILTERING IN FROM THE W/NW.
/ISSUED 357 AM CDT WED AUG 5 2015/ AN ACTIVE WEATHER PATTERN IS EXPECTED OVER THE NEXT 36 HOURS AS SEVERAL UPPER LEVEL DISTURBANCES WILL MOVE ACROSS THE REGION BEFORE THE MAIN UPPER LOW EXITS THE AREA LATE THURSDAY EVENING.
WITH BROAD RIDGING IN PLACE OVER THE SOUTHWESTERN CONUS AND TROUGHING ACROSS THE EAST. SOUTHERLY WINDS WILL AGAIN ADVECT THE HIGHER MOISTURE AIR OVER THE GULF INTO THE REGION. CARRYING THE HIGHEST CHANCES /20 POPS/ ALONG AND SOUTH OF THE INTERSTATE 10 CORRIDOR. THE UPPER RIDGE OVER THE SOUTHWESTERN CONUS WILL CONTINUE TO SHIFT EASTWARD OVER THE NEXT 24 HOURS. THE UPPER RIDGE PARKS ITSELF OVER NORTH/NORTHEAST TEXAS AND PROLONGS THE HEAT WITH INLAND TEMPERATURES RISING INTO THE LOW 100S THIS WEEKEND. HUFFMAN HIGH PRESSURE OVER THE EASTERN GULF AND LOWER PRESSURE OVER THE SOUTHERN PLAINS WILL MAINTAIN A LIGHT TO MODERATE ONSHORE FLOW THROUGH THE WEEKEND.
UPPER LEVEL TROUGH REMAINS OVER SOUTHERN BRITISH COLUMBIA WITH SOUTHWESTERLY FLOW ALOFT CONTINUING OVER MONTANA THROUGH EARLY THURSDAY MORNING.
/ISSUED 447 AM EDT WED AUG 5 2015/ LATEST SURFACE ANALYSIS SHOWS RIDGE OF HIGH PRESSURE PRETTY MUCH IN CONTROL ACROSS THE AREA WITH WATER VAPOR LOOP SHOWING AREA UNDER SOUTHEASTERN EDGE OF DEFORMATION ZONE BETWEEN MID LEVEL HIGH NORTHEAST OF THE BAHAMAS AND ANOTHER HIGH STRETCHING INTO THE WESTERN GULF FROM THE SW U.
918 AM EDT WED AUG 5 2015 KBYX DETECTS ISOLATED SHOWERS OVER OFFSHORE GULF OF MEXICO WATERS NORTHWEST OF THE LOWER KEYS. IN THE LOW TO MID LEVELS OF THE ATMOSPHERE. AN ATLANTIC RIDGE OF HIGH PRESSURE WILL EXTEND OVER SOUTH CENTRAL FLORIDA THIS AFTERNOON. A RIDGE OF HIGH PRESSURE WILL BUILD ACROSS NORTH FLORIDA TODAY.
LOCATIONS AROUND TOLEDO BEND RESERVOIR SHOULD BE SLIGHTLY COOLER SO THEY WERE LEFT OUT OF THE ADVISORY. THE HOT UPPER RIDGE WILL BE EXPANDING BACK OVER THE MS RIVER VALLEY.
MODELS HAVE THE UPPER RIDGE AXIS TO MOVE EASTWARD ACROSS THE CWA TODAY. THEN WEAK UPPER TROUGHING TO THE NORTH MOVES EAST WITH ZONAL FLOW FOR THE CWA TONIGHT. THIS AFTERNOON'S HIGHS LOOK TO BE 1-4 C WARMER THAN YESTERDAY'S HIGHS. THE RIDGE WILL FLATTEN OVER COLORADO THURSDAY AS A SYSTEM PASSES TO THE NORTH OF THE STATE IN THE MORNING.
939 AM EDT WED AUG 5 2015 LOW PRESSURE ALOFT AND ITS ASSOCIATED COOL CYCLONIC FLOW WILL PRODUCE A CHANCE OF SHOWERS AND THUNDERSTORMS TODAY.
WITH THE HIGHER RH VALUES. WITH THE HIGHEST PROBABILITIES OVER SOUTH CENTRAL LA. FARTHER REMOVED FROM THE SUPPRESSING EFFECTS OF THE UPPER RIDGE OUT WEST. THE ISSUE HAS BEEN THE RIDGE ALOFT OVER TX/LA AND THIS WILL CONTINUE TO BE OUR BIGGEST PROBLEM.
1137 AM EDT WED AUG 5 2015 WEAK COLD FRONT SAGS SOUTH THROUGH SOUTHERN WEST VIRGINIA TODAY. AS HIGH PRESSURE BUILDS TOWARD THE OHIO VALLEY. A LOW PRESSURE SYSTEM PUSHES EAST ACROSS THE AREA THURSDAY AND THURSDAY NIGHT. AS HIGH PRESSURE SAILS SEWD THROUGH THE GREAT LAKES AND TOWARD THE UPPER OHIO VALLEY. THIS WILL YIELD A SLIGHTLY COOLER DAY COMPARED WITH TUE EVEN WITH A BREAK IN THE HIGH CLOUDS ALONG AND N OF THE FRONT. ALSO MAINTAINED THE LOW CHANCE FOR THUNDER TONIGHT OVER SW VIRGINIA.
AN UPPER LEVEL LOW CENTERED OVER B. THIS WILL BRING INCREASED ONSHORE FLOW AND COOLER TEMPS TO THE AREA.
EVEN THOUGH MID LAYERS DRIED OUT WITH SUBSIDENCE PROVIDED BY THE UPPER RIDGE CENTER OVER THE DESERT SOUTHWEST AND WESTERN TEXAS LOW LEVEL DEW POINTS REMAINED HIGH ENOUGH TO COMBINE WITH THE ABOVE NORMAL NEAR RECORD HEAT TO PRODUCE HEAT INDICES IN THE RANGE OF 107 TO 114 DEGREES ALONG THE COASTAL COUNTIES AND ALONG MOST OF THE COUNTIES THAT BORDER THE RIO GRANDE RIVER. THE UPPER RIDGE AXIS EDGES EASTWARD TONIGHT AND THURSDAY WITH VERY WARM OVERNIGHT LOWS AND ANOTHER SCORCHER ON THURSDAY. THE SOUTHEAST BREEZES TO PICK UP AGAIN AS THE GRADIENT IS MAINTAINED BETWEEN THE LEE SIDE TROUGH OVER THE SIERRA MADRE AND THE RELATIVELY COOLER GULF WATERS.
950 AM PDT WED AUG 5 2015 WARMER TEMPERATURES RETURN TODAY. ANOTHER LOW PRESSURE SYSTEM WILL BRING MILDER TEMPERATURES PLUS A CHANCE FOR SHOWERS AND THUNDERSTORMS BEGINNING THURSDAY NIGHT.
/ISSUED 434 AM CDT WED AUG 5 2015/ EARLY THIS MORNING A MID LEVEL AREA OF LOW PRESSURE WAS SHIFTING EAST SOUTHEAST ACROSS NEBRASKA AND KANSAS PER LATEST WATER VAPOR IMAGERY. WITH ADDITIONAL SHOWER AND THUNDERSTORM CHANCES THROUGH THIS EVENING AS THE MID LEVEL LOW TROF AXIS MOVES THROUGH THE REGION.
AND INCREASING HEIGHTS ASSOCIATED WITH A BUILDING MID LEVEL RIDGE WILL RESULT IN INCREASING TEMPERATURES.
THE MAIN THINKING WAS MOVING INLAND BUT THE LOW LEVEL WIND FLOW IS SHOWING MOVEMENT COULD BE RATHER ERRATIC AND HUG THE EAST COAST FOR MUCH OF THE AFTERNOON. /ISSUED 447 AM EDT WED AUG 5 2015/ LATEST SURFACE ANALYSIS SHOWS RIDGE OF HIGH PRESSURE PRETTY MUCH IN CONTROL ACROSS THE AREA WITH WATER VAPOR LOOP SHOWING AREA UNDER SOUTHEASTERN EDGE OF DEFORMATION ZONE BETWEEN MID LEVEL HIGH NORTHEAST OF THE BAHAMAS AND ANOTHER HIGH STRETCHING INTO THE WESTERN GULF FROM THE SW U.