Aikyam-Lab/Synoptic-Bench huggingface dataset:
842 PM CST TUE MAR 1 2016 SKIES HAVE CLEARED ACROSS THE MIDSOUTH THIS EVENING BEHIND THE DEPARTING COLD FRONT. EXPECT LOW TEMPERATURES TO DROP INTO THE LOWER TO MID 30S. /ISSUED 202 PM CST TUE MAR 1 2016/ THE COLD FRONT IS RAPIDLY MOVING INTO MIDDLE TENNESSEE. TEMPERATURES SHOULD REMAIN STEADY OR TREND SLIGHTLY COOLER FOR THE REMAINDER OF THE AFTERNOON. THEN COOL INTO THE LOW TO MIDDLE 30S TONIGHT.
811 PM CST TUE MAR 1 2016 TO REMOVE THUNDERSTORMS, ADJUST TEMPERATURES, SKY COVER, AND TAPER OFF POPS/QPF WITH THE COLD FRONT ALREADY SOUTHEAST OF THE AREA. IN THE WAKE OF A SFC COLD FRONT, THE CLUSTERS OF THUNDERSTORMS THAT IMPACTED PORTIONS OF NORTH AL HAVE CONGEALED INTO A QLCS AND MOVED OFF TO THE SOUTHEAST OVER CENTRAL AL/GA. WITH THE FASTER PROGRESSION OF THE COLD FRONT, MODELS ARE STRUGGLING WITH THE TEMPERATURE TREND AND WIND SPEEDS. WITH LINGERING -RA/SHRA CONTINUING ALONG AN ADVANCING COLD FRONT OVER N CNTRL AL.
THE COLD FRONT EXTENDS FROM NORTHERN INDIANA SOUTHWARD THROUGH MISSISSIPPI AND INTO NORTHEAST TX. THE AXIS OF THE MAIN UPPER LEVEL TROUGH WAS ROUGHLY OVER THE MISSISSIPPI RIVER VALLEY. AS THIS TROUGH CONTINUES A SLOW EASTWARD PROGRESSION DURING THE EVENING HOURS. THE SURFACE COLD FRONT WILL MOVE EAST ACROSS THE TN VALLEY. THANKS TO THE LOW INSTABILITY ACROSS TN VALLEY. AS THE COLD FRONT EXITS THE AREA LATER THIS EVENING. HIGH PRESSURE WILL BUILD IN AT THE SURFACE. WHILE THE UPPER LEVEL TROUGH MOVES SLOWLY THROUGH THE AREA. WITH NEAR FREEZING TEMPS FORECAST WEDNESDAY MORNING.
A BROAD TROUGH IS OVER WASHINGTON AND OREGON WITH WATER VAPOR SATELLITE SHOWING 3 LOWS. HRRR INDICATES THAT THE LOWER COLUMBIA BASIN WILL BE DRY UNTIL AT LEAST 20Z THOUGH SHOWERS ARE POSSIBLE IN THE HIGHER TERRAIN.
THE AXIS OF THE LOW PRESSURE TROUGH WILL BE STRETCHED FROM AROUND SALT LAKE CITY TO DURANGO AT 12Z THIS MORNING. THE LARGE CA LOW PRESSURE SYSTEM WILL THEN TRAVEL ACROSS SONORA AND INTO CHIHUAHUA ON TUE. COOLER TEMPERATURES ARE EXPECTED.
858 AM EST MON MAR 7 2016 HIGH PRESSURE WILL SETTLE OVER THE SOUTHEASTERN STATES THROUGH THE MIDDLE OF THE WEEK. A COLD FRONT MAY APPROACH LATE IN THE WEEK. HIGH PRESSURE WILL CONTINUE TO BUILD TO OUR SOUTH TODAY AND A SOUTHERLY FLOW AROUND THE HIGH WILL ALLOW FOR WARM CONDITIONS. THERE IS THE POTENTIAL FOR EVEN WARMER CONDITIONS. HIGH-LEVEL MOISTURE WILL ROTATE AROUND THE UPPER-LEVEL RIDGE AXIS AND A NORTHWEST FLOW ALOFT IS PERPENDICULAR TO THE APPALACHIAN MOUNTAINS. HIGH PRESSURE WILL ANCHOR OFF THE SE COAST. AN UPPER LEVEL RIDGE WILL KEEP US DRY AND MOSTLY CLEAR WITH TEMPS REACHING THE 40S.
A DEEP UPPER LOW FORMATION REMAINS ON TRACK TO OCCUR OVER SOUTHERN CA TODAY. WITH A RIDGE BUILDING OVER THE SOUTHEAST U. AS THE DEEPENING UPPER LOW DROPS INTO NORTHWESTERN MEXICO AND MIDLEVEL EDGING THE MIDLEVEL MOISTURE PLUME BUILDS EAST.
1031 AM EST MON MAR 7 2016 A RIDGE OF HIGH PRESSURE ALONG THE CAROLINA COAST WILL STAY ANCHORED IN PLACE THROUGH MIDWEEK.
Widespread light to moderate, with some areas of embedded heavy, precipitation continues early this morning as a slow moving frontal zone lingers over interior NorCal as the upper trough just offshore digs to the southeast.
THE AREA SEES A RELATIVE LULL IN THE OTHERWISE WET AND WINDY PATTERN TODAY AS AN UPPER LEVEL RIDGE BUILDS OVER THE PACIFIC NORTHWEST. THESE SHOWER WILL DIMINISH RAPIDLY AS THE SUN ANGLE DECREASES AND THE SURFACE COOLS LATE THIS AFTERNOON INTO EARLY EVENING WITH DEWPOINTS LOOKING TO DROP TO NEAR OR BELOW FREEZING IN PLACES. WITH THE COLD AIR MASS AND CLEARING SKIES TEMPS WEST OF THE CASCADES ARE EXPECTED TO DROP BELOW FREEZING INTO THE UPPER 20S IN THE VALLEYS OF SOUTHWEST OREGON SOUTH OF THE UMPQUA DIVIDE AND NORTHERN CALIFORNIA. BUT WILL HAVE TO CLOSELY MONITOR THIS FOR THE POSSIBILITY OF FREEZING RAIN. AND ANY FREEZING PRECIP IF THIS SHOULD HAPPEN WOULD BE MOSTLY CONFINES TO RIDGES AND OVERPASSES AND THE AMOUNT WOULD NOT BE ENOUGH TO CAUSE ANY OVERLOADING OF BRANCHES OR POWERLINES.
SOUTHERN EXTENT OF A SHARP TROF ADVANCING INTO THE WESTERN CONUS EARLY THIS MORNING IS PROGGED SIMILARLY BY MODELS TO EVOLVE INTO A CLOSED LOW. DEEP GULF AND PACIFIC MOISTURE WILL BE INCOMING ACROSS THE AREA BETWEEN THIS FEATURE AND AMPLIFIED SOUTHEAST CONUS RIDGE.
Think highs in the low to mid 70s are easily attainable with even moderate insolation through mid and high clouds.
STORMS FORMING ALONG THE DRYLINE OVER WEST TEXAS AND SERRANIAS DEL BURRO MOUNTAINS OF MEXICO MAY MOVE INTO THE LOWER PECOS VALLEY AND EDWARDS PLATEAU TONIGHT AND HAVE ALSO MENTIONED SEVERE THERE. THE LOW LEVEL JET CONTINUE THE STREAMER SHOWERS WHILE SOME INSTABILITY ALLOWS FOR SOME STORMS ACROSS AREAS ALONG AND EAST OF I-35.
COOLER CONDITIONS WILL CONTINUE TODAY AND TUESDAY.
647 AM EST MON MAR 7 2016 A SIGNIFICANT WARMING TREND IS EXPECTED INTO TUESDAY AS SOUTHWEST FLOW INCREASES IN ADVANCE OF A COLD FRONT. HIGHS WILL SOAR WELL INTO THE MIDDLE 50S ACROSS SOUTHERN LOWER MICHIGAN TO THE LOWER 60S ACROSS CENTRAL INDIANA LATER THIS AFTERNOON. A WEAK WARM FRONT MAY BRING SCATTERED LIGHT RAIN SHOWERS THROUGH THE AREA TODAY.
906 AM EST MON MAR 7 2016 DRY STABLE CONDITIONS ASSOCIATED WITH HIGH PRESSURE ALONG THE EASTERN SEABOARD WILL MAINTAIN PLEASANT DRY WEATHER ACROSS THE ENTIRE FORECAST AREA AGAIN TODAY.
THE AREA SEES A RELATIVE LULL IN THE OTHERWISE WET AND WINDY PATTERN TODAY AS AN UPPER LEVEL RIDGE BUILDS OVER THE PACIFIC NORTHWEST. THESE SHOWERS WILL DIMINISH RAPIDLY AS THE SUN ANGLE DECREASES AND THE SURFACE COOLS LATE THIS AFTERNOON INTO EARLY EVENING WITH DEWPOINTS LOOKING TO DROP TO NEAR OR BELOW FREEZING IN PLACES. WITH THE COLD AIR MASS AND CLEARING SKIES TEMPS WEST OF THE CASCADES ARE EXPECTED TO DROP BELOW FREEZING INTO THE UPPER 20S IN THE VALLEYS OF SOUTHWEST OREGON SOUTH OF THE UMPQUA DIVIDE AND NORTHERN CALIFORNIA. BUT WILL HAVE TO CLOSELY MONITOR THIS FOR THE POSSIBILITY OF FREEZING RAIN. AND ANY FREEZING PRECIP IF THIS SHOULD HAPPEN WOULD BE MOSTLY CONFINED TO BRIDGES AND OVERPASSES AND THE AMOUNT WOULD NOT BE ENOUGH TO CAUSE ANY OVERLOADING OF BRANCHES OR POWER LINES.
ASSOCIATED WITH SLOW MOVING TROF OVER WY. IT ALSO APPEARS THAT SOME LOW LEVEL COOLER CANADIAN AIR WILL DROP INTO OUR FAR EAST TONIGHT AND THERE MAY BE SOME STRATUS ASSOCIATED WITH THIS AIRMASS NEAR MILES CITY AND BAKER. BRIEF PERIOD OF UPPER RIDGING WILL BRING DRY CONDITIONS TONIGHT INTO TUESDAY. WITH STAGNANT PACIFIC TROF FINALLY PUSHING EASTWARD INTO THE AREA NEXT MONDAY.
Precipitation will enhance along the ID/MT border this evening and overnight with the arrival of a cold front. Precipitation should be light for the most part, however showers could become moderate for a brief period right along the cold front.
AS LOW PRESSURE WEST OF THE SIERRAS MOVES FARTHER SOUTH TODAY AND TONIGHT. COOLER AIR WILL SEEP INTO THE SILVER STATE. ANOTHER COLD FRONT MAY IMPACT THE GREAT BASIN NEAR THE END OF THE WEEK.
WITH A WEAK SMALL SCALE TROUGH EMBEDDED WITHIN THIS FLOW NEAR 90 WEST. AT THE SURFACE AND IN THE LOWER TO MIDDLE LEVELS. DEPICT THE CENTER OF A 1030 MB ANTICYCLONE LOCATED OVER EASTERN NORTH CAROLINA. THE FLORIDA KEYS LIE ALONG THE SOUTHERN PERIPHERY OF THIS RIDGE. TEMPERATURES ACROSS THE ISLANDS ARE IN THE LOWER 70S WITH DEWPOINTS BETWEEN 55 AND 60. THE CENTER OF NEAR 1030 MB SURFACE RIDGING REMAINS IN THE SAME POSITION NEAR EASTERN NORTH CAROLINA THROUGH THIS EVENING.
PRECIPITATION CHANCES WILL BEGIN TO INCREASE IN THE WEST AS A LOW PRESSURE SYSTEM DEVELOPS OVER CALIFORNIA. THE UPPER LOW MAY DRIFT NORTHWARD AS IT TRACKS SLOWLY INTO TEXAS DURING THE LATTER HALF OF THE WEEK. AN UPPER TROUGH WILL PASS N OF NM CAUSING WINDS ALOFT TO STRENGTHEN AND A DECENT LEE TROUGH TO DEVELOP. MODELS ARE IN GOOD AGREEMENT ON THE TRACK OF THE CA LOW PRESSURE SYSTEM UNTIL IT BEGINS TO EXIT NORTHERN MEXICO INTO TX.
944 AM EST MON MAR 7 2016 ATLANTIC HIGH PRESSURE WILL EXTEND ACROSS THE AREA INTO LATE WEEK WITH UNSETTLED CONDITIONS LIKELY TO RETURN OVER THE WEEKEND. SKIES WILL BE MAINLY COMPRISED OF HIGH CLOUDS SPILLING OVER THE TOP OF THE RIDGE AND SOME DIURNAL CUMULUS DEVELOPING IN THE AFTERNOON HOURS. THIS WILL ALLOW FOR INLAND TEMPERATURES TO RISE INTO THE LOW TO MID 70S IN MANY AREAS. THE INCREASINGLY ONSHORE FLOW WILL KEEP TEMPERATURES DOWN ALONG THE COAST AND MAINLY IN THE LOW TO MID 60S. ATLANTIC HIGH PRESSURE WILL PERSIST THROUGH MID WEEK.
A STRONG LOW PRESSURE SYSTEM MOVING ACROSS SOUTHERN CALIFORNIA INTO SONORA MEXICO WILL THEN BRING ISOLATED TO SCATTERED SHOWERS AS EARLY AS THIS EVENING INTO TUESDAY. MUCH COOLER TEMPERATURES WILL ALSO ACCOMPANY THIS SYSTEM.
446 AM MST MON MAR 7 2016 UPPER LOW WORKING SLOWLY NORTHEAST ACROSS THE FORECAST AREA WITH CIRCULATION PICKED UP IN RADAR AND SATELLITE IMAGERY. BAND OF HEAVY PRECIPITATION CONTINUES TO WRAP AROUND THE NORTHERN EDGE OF THE LOW AND SNOTELS SHOWING DECENT ACCUMULATIONS ACROSS THE EASTERN UINTA MOUNTAINS IN NORTHEAST UTAH. THE AXIS OF THE LOW PRESSURE TROUGH WILL BE STRETCHED FROM AROUND SALT LAKE CITY TO DURANGO AT 12Z THIS MORNING. THE LARGE CA LOW PRESSURE SYSTEM WILL THEN TRAVEL ACROSS SONORA AND INTO CHIHUAHUA ON TUE. COOLER TEMPERATURES ARE EXPECTED.
FORECAST MODEL SOUNDINGS AND PV ANALYSIS SUGGEST THAT UPPER TROUGH OVER WESTERN COLORADO EARLY THIS MORNING WILL ROTATE INTO FAR NORTHEASTERN COLORADO BY LATE THIS AFTERNOON BEFORE BECOMING CENTERED OVER CENTRAL SOUTH DAKOTA BY 12Z TUESDAY. COOLER TEMPERATURES WILL BE NOTED OVER THE FORECAST DISTRICT TODAY AND TONIGHT(AS COMPARED TO THE PREVIOUS 24 HOURS). COOLER TEMPS CAN BE EXPECTED ON TUE WITH INCREASED CLOUD COVER. ON THU AN UPR RIDGE NOSES INTO THE STATE FROM THE WEST AND BRINGS DRY WEATHER AND WARMER TEMPS. FOR SUN THE GFS HAS A RIDGE OVR THE AREA WITH AN UPR TROF OVR THE WEST COAST. WHILE THE ECMWF SHOWS ANOTHER DISTURBANCE MOVING INTO THE ROCKIES AND BRINGING PCPN TO THE HIGH COUNTRY.
823 AM EST MON MAR 7 2016 HIGH PRESSURE WILL BRING DRY WEATHER AND WARM TEMPERATURES THROUGH AT LEAST MID-WEEK. UPPER LEVEL RIDGE WILL BUILD OVER THE OHIO VALLEY TODAY. WARM ADVECTION WILL BE ONGOING UNDER THE RIDGE.
BECOMING WESTERLY AND THEN NORTHERLY AS A COLD FRONT PUSHES INTO THE PANHANDLES LATE TONIGHT. KAMA VAD WIND PROFILE HAS BEEN SAMPLING SOUTHWEST WINDS OF 40 TO 55 KT IN THE LOWEST 2000 FOOT LEVELS ALL NIGHT.
638 AM EST MON MAR 7 2016 ATLANTIC HIGH PRESSURE WILL EXTEND ACROSS THE AREA INTO LATE WEEK WITH UNSETTLED CONDITIONS LIKELY TO RETURN OVER THE WEEKEND. MID AND UPPER LEVEL RIDGING WILL BUILD OVER THE REGION FROM THE WEST TODAY. A WEAK AND RATHER POORLY DEFINED TROUGH WILL DEVELOP JUST OFF THE GEORGIA COAST BUT WILL HAVE LITTLE TO NO IMPACT ON WEATHER CONDITIONS. SOME MAINLY THIN CIRRUS COULD SPILL OVER THE TOP OF THE RIDGE AND ACROSS THE AREA TODAY. STRONG SUBSIDENCE AND RISING HEIGHTS ALOFT WILL SUPPORT HIGH TEMPERATURES IN THE LOWER TO MID 70S ACROSS THE AREA. ATLANTIC HIGH PRESSURE WILL PERSIST THROUGH MID WEEK.
THE PARENT UPPER LEVEL TROUGH AND SFC COLD FRONT STARTS TO LIFT IN FROM THE WEST. EXPECTATION IS FOR THE LOW CLOUDS TO GRADUALLY MOVE NORTH/EAST IN THE MORNING/EARLY AFTERNOON. NOT THE BEST SETUP AHEAD OF THE COLD FRONT. COOLER AIR. MOVES IN BEHIND THE DEPARTING COLD FRONT FROM TUE. THE UPPER LEVEL RIDGE REASSERTS ITSELF LEADING INTO THE WEEKEND. THE GFS SUGGESTS AN UPPER LEVEL TROUGH COULD BREAK THROUGH THE TOP OF THE RIDGE. THE TUE COLD FRONT HAS EDGED SOUTHEAST FOR WED. AND ALL MODELS SPIN A BIT OF UPPER LEVEL ENERGY OUT OF A TX TROUGH NORTHWARD INTO THE BOUNDARY. A WARM FRONT WILL MOVE SLOWLY NORTH THROUGH TONIGHT.
PACIFIC UPPER TROUGH WILL SPLIT AND WEAKEN AS IT COMES INTO OUR AREA TODAY. THERE IS ALREADY EVIDENCE THAT THE WEISER RIVER CRESTED EARLIER TONIGHT AT BOTH CAMBRIDGE AND WEISER.
HIGH PRESSURE RIDGING WILL CONTINUE ALONG THE EASTERN SEABOARD THOUGH CENTER OF HIGH PRESSURE WILL SLIDE JUST OFF OF THE MID ATLC COAST OVER THE NEXT 24 HOURS. HIGH PRESSURE DOMINATES THE REGION WITH MOSTLY DRY CONDITIONS. HIGH PRESSURE RIDGING OVER THE ATLANTIC SEABOARD AND FLORIDA PENINSULA OVER THE NEXT 24 HOURS.
1044 AM EST MON MAR 7 2016 THE MID/UPPER LEVEL RIDGE OVER THE SOUTHEAST CONUS WILL CONTINUE TO AMPLIFY TODAY.
A 1028 MB HIGH PRESSURE CENTER RESIDES OVER THE VIRGINIA TIDEWATER AND NORTH CAROLINA OUTERBANKS REGION EARLY THIS MORNING. THANKS TO THE INFLUENCE OF THE AFOREMENTIONED HIGH PRESSURE AND ITS ASSOCIATED RIDGE AXIS ENGULFING THE SOUTHEASTERN US. THE INCREASE IN WINDS IS A RESULT OF THE HIGH PRESSURE OVER THE EASTERN SEABOARD SHIFTING SOUTH AND EAST. PRECIPITATION CHANCES WILL REMAIN LOW UNDER THE INFLUENCE OF THE HIGH PRESSURE RIDGE. A MORE FAVORABLE MOISTURE AND WIND PROFILE EMERGES THIS WEEKEND AS THE AFOREMENTIONED HIGH PRESSURE SYSTEM SLIDES EASTWARD AND A NEGATIVELY TILTED TROUGH APPROACHES FROM THE WEST. A HIGH PRESSURE SYSTEM CURRENTLY OVER THE EASTERN SEABOARD WILL SHIFT SOUTH AND EAST TODAY.
536 AM CST MON MAR 7 2016 THE SHORT TERM PERIOD WILL BE LARGELY FOCUSED ON THE LOW PRESSURE SYSTEM MOVING THROUGH THE REGION TODAY INTO TUESDAY. AS THE LOW PRESSURE MOVES THROUGH THE REGION.
THE SURFACE REFLECTION OF THIS WAVE WAS LOW PRESSURE OVER CNTRL SD WITH A TRAILING COLD FRONT TO THE SOUTHWEST INTO WRN NEB. THIS SYSTEM AND ASSOCIATED COLD FRONT WILL BE TRACKING EWD THIS EVENING. FORCING FOR ASCENT IS WEAK THIS EVENING AND BASICALLY CONFINED TO THE MESOSCALE FORCING ALONG THE COLD FRONT AS HEIGHT FALLS AND Q-G FORCING IS CONFINED TO THE DAKOTAS. GOOD MIXING AND MORE SUN THAN TODAY SHOULD LEAD TO WARMER TEMPERATURES WITH HIGHS NEAR 90 IN MANY LOCATIONS. MODELS HAVE A STRONG SIGNAL FOR AN MCS OVER THE HIGH PLAINS STARTING ON FRI EVENING WITH STRONG LOW TO MID LEVEL WARM MOIST ADVECTION ABOVE THE STALLED FRONTAL BOUNDARY.
A RIDGE STRETCHES FROM SOUTH CENTRAL INTO NORTHERN CANADA. RELATIVELY ZONAL FLOW EXISTS ON THE SOUTHERN PERIPHERY OF THE RIDGE. WHERE IT TURNS SOUTHEASTWARD TOWARD LOW OVER THE LOWER TO MIDDLE OHIO RIVER VALLEY. AND SURFACE COLD FRONTAL BOUNDARY.
DEEP LAYER RIDGING IS PROGGED TO BUILD OVER THE WESTERN GULF COAST STATES OVER THE NEXT DAY OR SO. AND IN THE LOWER 70S NEAR THE COAST. MODELS CONTINUE TO PROG A WEAK FRONT DROPPING INTO THE AREA TUE NIGHT INTO WED AS THE RIDGE SHIFTS TO THE WEST AND A TROF DIGS INTO THE ERN CONUS.
924 PM EDT THU AUG 6 2015 LOW PRESSURE WILL TRACK TO THE SOUTH OF PENNSYLVANIA OVERNIGHT AND EARLY FRIDAY BEFORE MOVING OFFSHORE THIS WEEKEND. HIGH PRESSURE WILL MOVE INTO THE AREA BEHIND THE DEPARTING LOW.
A MID/UPPER LEVEL RIDGE WILL REMAIN OVER THE AREA THROUGH THE WEEKEND WHICH WILL PROMOTE VERY HOT CONDITIONS.
1046 PM CDT THU AUG 6 2015 UPPER LEVEL TROUGH PUSHING INTO MN HAS TRIGGERED AN AREA OF SHOWERS AND SCATTERED THUNDERSTORMS OVER MN. 18Z SFC DATA HAS HIGH PRESSURE OVER THE GREAT LAKES WITH WEAK LOWS OVER THE DAKOTAS AND LOWER OHIO VALLEYS. QUIET AND DRY CONDITIONS WILL BE SEEN THROUGH THROUGH SUNSET AND THE EVENING HOURS AS THE HIGH SLOWLY MOVES INTO THE EASTERN GREAT LAKES.
WATER VAPOR IMAGERY AND UPPER-AIR ANALYSIS SUPPORTS THE PRESENCE OF AN UPPER RIDGE ROUGHLY CENTERED OVER THE WESTERN SOUTH PLAINS. SOME SUBTROPICAL MOISTURE IS SPILLING INTO THE CENTER OF THE RIDGE BUT BELOW ABOUT 500MB THE AIRMASS HAS DRIED SOME. THE TROUGH IS POSITIONED UNDERNEATH A CORRIDOR OF STEEPER MID-LVL LAPSE RATES. THE UPPER RIDGE IS FORECAST TO BEGIN TO SLOWLY MIGRATE EASTWARD ACROSS TEXAS. PERHAPS JUST A DEGREE OR TWO COOLER IN MANY LOCATIONS. THE BAD NEWS IS IT APPEARS AMPLE MOISTURE IS GOING TO GET TRAPPED UNDERNEATH THE RIDGE AS IT MOVES BACK TO THE WEST. AS THE HIGH STARTS TO MAKE ITS WAY BACK TO WEST OVER THE WEEKEND.
MVFR CONDITIONS ARE POSSIBLE AT TIMES AS A LOW PRESSURE SYSTEM PASSES THROUGH CENTRAL WISCONSIN AND BRINGS INCREASING CHANCES OF SHOWERS AND A FEW THUNDERSTORMS. AS THE LOW APPROACHES WISCONSIN OVERNIGHT. SKIES WILL GRADUALLY CLOUD OVER WHICH WILL KEEP THE LOW TEMPS IN THE LOWER 60S ACROSS MUCH OF THE AREA. THE LOW WILL BE ON THE DOORSTEP OF NORTHERN WISCONSIN.
THIS COMBINED WITH A WEAK SURFACE TROF LAYING FROM NEAR LIVINGSTON TO NEAR MILES CITY WILL BE ENOUGH FOR ISOLATED SHOWERS AND THUNDERSTORM DEVELOPMENT. WITH HIGHER POPS INCREASED CLOUD COVER JUST A BIT WHICH WILL ALSO HELP TO HOLD TEMPERATURES A FEW DEGREES WARMER THAN PREVIOUS FORECAST. UPPER LOW WILL TRACK ACROSS SOUTHERN CANADA OVERNIGHT AND DRAG A RELATIVELY DRY COLD FRONT ACROSS OUR FORECAST AREA THIS EVENING. A COOLER AND DRIER AIR MASS WILL BE IN PLACE OVER US FRIDAY. MODELS SUGGEST SOME RETURN FLOW OUT OF THE EAST BEHIND THE COLD FRONT.
SURFACE ANALYSIS THIS EVENING SHOWS A BROAD AREA OF HIGH PRESSURE RIDGING ACROSS THE CENTRAL PENINSULA AND THROUGH THE CENTRAL GULF. HIGH PRESSURE STRETCHED ACROSS THE CENTRAL GULF OF MEXICO WILL GENERALLY REMAIN IN PLACE THROUGH TOMORROW.
531 PM MDT THU AUG 6 2015 THE TUG OF WAR BETWEEN THE WEST COAST UPPER LOW AND THE WEST TEXAS UPPER HIGH CONTINUES.
1239 AM EDT FRI AUG 7 2015 THE AVIATION SECTION HAS BEEN UPDATED BELOW HIGH PRESSURE WILL BUILD IN TONIGHT.
SOME RADAR ECHOS ARE BEGINING TO SHOW UP ALONG THE MONTEREY COAST THIS AFTERNOON AS A LOW PRESSURE SYSTEM APPROACHES FROM THE WEST. THE CURRENT SATELLITE WATER VAPOUR IMAGE CONTINUES TO SHOW A PLUME OF SUB TROPICAL MOISTURE FLOWING INTO THE FORECAST AREA AHEAD OF THE APPROACHING LOW PRESSURE SYSTEM.
/ISSUED 250 PM CDT THU AUG 6 2015/ THE FULL INFLUENCE OF THE UPPER LEVEL RIDGE WILL BE FELT ACROSS NORTH TEXAS THE NEXT SEVERAL DAYS AS THE CENTER OF THE HIGH MEANDERS AROUND THE REGION.
739 PM EDT THU AUG 6 2015 HIGH PRESSURE WILL DOMINATE OUR WEATHER FOR THE NEXT SEVERAL DAYS BRINGING DRY CONDITIONS AND COMFORTABLE TEMPERATURES.
18Z SFC DATA HAS HIGH PRESSURE OVER THE GREAT LAKES WITH WEAK LOWS OVER THE DAKOTAS AND LOWER OHIO VALLEYS. QUIET AND DRY CONDITIONS WILL BE SEEN THROUGH THROUGH SUNSET AND THE EVENING HOURS AS THE HIGH SLOWLY MOVES INTO THE EASTERN GREAT LAKES.
EXPECT TO SEE GRADUALLY WARMING READINGS ACROSS THE AREA OVER THE NEXT SEVERAL DAYS AS UPPER LEVEL HIGH PRESSURE STRENGTHENS ACROSS THE STATE. BUT WITH MUCH LESS PCPN AS HIGH PRESSURE BEGINS BUILDING OVER THE STATE. STILL KEEPING CLOSE TABS ON THE POSSIBILITY OF A HEAT ADVISORY FOR THE NEXT FEW DAYS WITH THE UPPER RIDGE SETTLING OVER THE REGION. HOWEVER WITH THE PROGGED RIDGE SETTLING DIRECTLY OVERHEAD THIS WEEKEND A BIT MORE WILLING TO LEAN TOWARDS THE WARMER END OF THE MOS SPEC- TRUM FOR THAT TIMEFRAME. EXTENDED GUIDANCE STILL HINTING AT THE POSSIBILITY OF ISO/WIDELY SCT PCPN FOR TUE/WED AS PWS SURGE AHEAD OF A FRONTAL BOUNDARY AS THE UPPER RIDGE NUDGES EVER SO SLIGHTLY BACK WEST. 41 HIGH PRESSURE OVER THE EASTERN GULF CONTINUES TO DOMINATE THE FLOW OUT OF THE SOUTH AND SOUTHWEST THROUGH THE WEEKEND.
HOLDING OFF MOST PRECIPITATION UNTIL THE AFTERNOON AND KEEPING THINGS MAINLY CONFINED TO THE HIGHER ELEVATIONS.
825 PM EDT THU AUG 6 2015 A RIDGE OF HIGH PRESSURE SETTLING INTO THE GREAT LAKES REGION TONIGHT WILL PROVIDE DRY CONDITIONS ALONG WITH PARTLY CLOUDY SKIES TONIGHT. AN UPPER LEVEL LOW TRACKING ACROSS FAR NORTHERN KENTUCKY AND SOUTHWEST OHIO WILL CONTINUE EASTWARD THIS EVENING. THIS TROF WILL ATTEMPT TO TOP THE UPPER LEVEL RIDGE AS THE RIDGE BUILDS NORTHEAST. THE TROF SHOULD THEN MOVE INTO THE FORECAST AREA LATE FRIDAY. THE UPPER LEVEL RIDGE AXIS SHOULD BECOME REESTABLISHED OVER THE FRONT RANGE FROM COLORADO WELL NORTH INTO THE CANADIAN INTERIOR. WITH AN UPPER LEVEL TROF BECOMING MORE AMPLIFIED FROM HUDSON BAY INTO THE UPPER GREAT LAKES.
/ISSUED 414 PM CDT THU AUG 6 2015/ AN UPPER RIDGE CONTINUES TO BUILD EASTWARD INTO THE AREA. THE RIDGE WILL EVENTUALLY CENTER OVER EAST TEXAS DURING THE WEEKEND.
LOW PRESSURE ALOFT OVER THE WEST COAST WILL CONTINUE THE COOLING TREND FRIDAY ALONG WITH AREAS OF COASTAL STRATUS AND LOCALLY GUSTY WESTERLY WINDS IN THE MOUNTAINS AND DESERTS.
WE HAVE SOME HIGH CLOUDS OTHERWISE THE ATMOSPHERE IS DRY AND STABLE WITH A RIDGE BUIDING OVERHEAD THIS EVENING. WITH INCREASED CLOUDS MAXIMUM TEMPERATURES SHOULD BE A BIT COOLER TOMORROW.
HOT AND DRY WEATHER WILL CONTINUE THROUGH THE SHORT TERM AS DEEP LAYER RIDGE REMAINS OVER THE SOUTHERN PLAINS.
ALSO, AN UPPER-LEVEL LOW PRESSURE SYSTEM NOW LOCATED ALONG ALBERTA/SASKATCHEWAN BORDER MAY BRING ANOTHER SHOWER OR THUNDERSTORM TO NORTHERN SECTIONS OF HILL/BLAINE COUNTY BETWEENNOW AND MIDNIGHT BEFORE THE SYSTEM EXITS EASTWARD TONIGHT. THE UPPER LEVEL LOW OVER SOUTHERN ALBERTA THIS AFTERNOON WILL CONTINUE TO MOVE OFF TO THE EAST THROUGH FRIDAY. THE NEXT UPPER LEVEL LOW WILL BEGIN APPROACHING THE FORECAST AREA FRIDAY NIGHT. THE LOW MAY OPEN UP AND WEAKEN SOME AS IT APPROACHES.
CHATTANOOGA AIRPORT, TN 72 84 69 91 / 50 20 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 69 82 67 88 / 50 20 10 0 OAK RIDGE, TN 70 82 66 88 / 50 20 10 0 TRI CITIES AIRPORT, TN 68 78 65 85 / 70 40 10 10.
820 PM EDT THU AUG 6 2015 AN UPPER TROUGH AND INCREASING MOISTURE WILL LEAD TO GREATER PRECIPITATION CHANCES TODAY INTO FRIDAY. AS THE TROUGH MOVES EAST OF THE AREA OVERNIGHT CONVECTION WILL DIMINISH. HOWEVER WITH LIFT AHEAD OF THE APPROACHING UPPER TROUGH AND LOW LEVEL CONVERGENCE ALONG AND AHEAD OF THE SURFACE BOUNDARY COMBINED WITH HIGH MOISTURE IN PLACE EXPECT CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT. THE RAIN HAS ALREADY COOLED TEMPERATURES INTO THE LOWER TO MIDDLE 70S FOR MOST LOCATIONS AND EXPECT LITTLE CHANGE THROUGH DAYBREAK. STRONG SHORT WAVE TROUGH MOVING THROUGH THE REGION DURING THE MORNING.
A COLD FRONT WILL MOVE ACROSS THE AREA TONIGHT AND FRIDAY MORNING, WITH ISOLATED TO SCATTERED SHOWERS DIMINISHING FROM THE NORTHWEST.
1112 PM CDT THU AUG 6 2015 AN AREA OF HIGH PRESSURE NORTH OF LAKE HURON THIS EVENING WITH A RIDGE AXIS EXTENDING SOUTH-SOUTHWEST INTO OUR AREA HAS PUSHED THE HIGHER DEW POINT AIR TO OUR WEST AND SOUTH. ONE ASSOCIATED WITH AN UPPER LEVEL LOW JUST OFF THE CALIFORNIA COAST WITH THE SECOND PLUME OF MOISTURE STREAMING NORTH AND NORTHEAST OUT OF MEXICO INTO THE DESERT SOUTHWEST. A STORM SYSTEM IS MOVING UP THE OHIO RIVER VALLEY THIS AFTERNOON WITH A HIGH PRESSURE RIDGE JUST TO THE NORTH OF IT DOMINATING MUCH OF THE GREAT LAKES.
1142 PM CDT THU AUG 6 2015 CURRENT SURFACE PRESSURE ANALYSIS INDICATES A LOW MOVING TO THE EAST ACROSS EASTERN SD WITH A WARM FRONT STRETCHED OUT ACROSS WEST CENTRAL AND SOUTHWEST MINNESOTA. WITH A COUPLE HEALTHY MESOCYCLONES. THE COLD FRONT WILL PASS THROUGH THE AREA TOMORROW MORNING AND SHIFT THE CONVECTION FARTHER EAST INTO WISCONSIN.
MOISTURE SURGING NORTH AHEAD OF A LOW PRESSURE SYSTEM OVER CALIFORNIA WILL BRING WIDESPREAD SHOWERS AND THUNDERSTORMS TO UTAH THROUGH THIS EVENING.
NOT MUCH COOLING THROUGH THE COLUMN AND WITH DEWPOINTS HOLDING IN THE 60S MINIMUM TEMPERATURES SHOULD BE SIMILAR IF NOT WARMER THAN THIS MORNING. CLOUDS WILL GOVERN TEMPERATURES BUT WITH THERMAL RIDGE SHIFTING OVER THE FA LATER IN THE DAY ANY BREAKS COULD BUMP TEMPERATURES UP TO AT OR ABOVE AVERAGE. AS UPPER LOW TRACKS ACROSS S CANADIAN PRAIRIE PROVINCES BROAD MID LEVEL SHEAR AXIS WILL CROSS FA.
1253 AM EDT FRI AUG 7 2015 UPPER LEVEL LOW PRESSURE OVER CANADA WILL MOVE EAST TONIGHT. WEAK HIGH PRESSURE WILL BUILD OVER THE AREA FRIDAY.
A few areas may be a degree or so cooler than today, but for the most part, we're looking at a carbon copy.
840 PM CDT THU AUG 6 2015 AN AREA OF HIGH PRESSURE NORTH OF LAKE HURON THIS EVENING WITH A RIDGE AXIS EXTENDING SOUTH-SOUTHWEST INTO OUR AREA HAS PUSHED THE HIGHER DEW POINT AIR TO OUR WEST AND SOUTH. ONE ASSOCIATED WITH AN UPPER LEVEL LOW JUST OFF THE CALIFORNIA COAST WITH THE SECOND PLUME OF MOISTURE STREAMING NORTH AND NORTHEAST OUT OF MEXICO INTO THE DESERT SOUTHWEST. A STORM SYSTEM IS MOVING UP THE OHIO RIVER VALLEY THIS AFTERNOON WITH A HIGH PRESSURE RIDGE JUST TO THE NORTH OF IT DOMINATING MUCH OF THE GREAT LAKES.
1010 PM EDT THU AUG 6 2015 HIGH PRESSURE REMAINS NORTH OF THE AREA AS LOW PRESSURE APPROACHES THE MID-ATLANTIC AND PASSES SOUTH OF LONG ISLAND OVER THE WEEKEND.
HIGH PRESSURE WILL BEGIN TO SHIFT EAST OF THE AREA. TEMPERATURES RANGED FROM THE UPPER 70S TO THE LOWER 90S FOR DESERT/VALLEY LOCATIONS.
HIGH CLOUDS ARE ON THE INCREASE THIS EVENING AHEAD OF AN UPPER LOW OFF THE CA COAST. LATEST MODEL SOLUTIONS ARE UNCHANGED IN TRACKING THE UPPER LOW FROM SW TO NE THROUGH CENTRAL NV LATE FRIDAY WITH PRECEDING SHOWERS AND THUNDERSTORMS REACHING THE ID BORDER FRIDAY MORNING.