Aikyam-Lab/Synoptic-Bench huggingface dataset:
IN ASSOCIATION WITH A RIDGE OF HIGH PRESSURE. THE PROSPECTS FOR GETTING RID OF THE LOW CLOUDS ARE NOT AS GOOD. A STRONG S/W TROF WILL PASS THROUGH THE REGION TONIGHT. INCREASED BOUNDARY LAYER FLOW AND THE PASSAGE OF THE S/W TROF SHOULD KEEP THE ATMOSPHERE STIRRED UP ENOUGH TO PREVENT FOG DEVELOPMENT TONIGHT. ANOTHER S/W TROF AND ASSOCIATED COLD FRONT WILL APPROACH THE REGION TUESDAY AFTERNOON.
TEMPERATURES RANGED FROM THE LOWER 40S IN NORTHWESTERN WISCONSIN AND EAST CENTRAL MN. TO THE LOWER 30S ALONG THE NORTH SHORE. AND THE POTENTIAL FOR DRIZZLE OR FREEZING DRIZZLE. ANOTHER THREAT WILL BE THE POTENTIAL FOR DRIZZLE OR EVENTUALLY FREEZING DRIZZLE. TEMPS AHEAD OF THE SYSTEM WILL INITIALLY BE ABOVE FREEZING.
343 PM EST MON DEC 7 2015 HIGH PRESSURE WILL BUILD OVER THE REGION TONIGHT. FAIRLY STRONG RADIATIONAL COOLING COMBINED WITH PERSISTENT SFC DEWPOINTS IN THE LOWER 40S WILL LIKELY ALLOW FOR SOME FOG FORMATION OVERNIGHT. LOW TEMPS WILL BE IN THE LOWER 40S.
A LOW PRESSURE SYSTEM IS FORECAST TO MOVE TOWARDS THE CENTRAL PLAINS TUE DRIFTING THE HIGH TOWARDS THE E TO SE. THE LOWER LEVEL MOISTURE WILL SURGE NORTH INTO THE AREA ALLOWING FOR AN INCREASE IN CLOUD COVER TONIGHT AND POSSIBLE PATCHY AREAS OF FOG COULD DEVELOP. VFR TAFS TODAY WITH HIGH PRESSURE SETTLING OVER THE AREA. BROAD HIGH PRESSURE OVER THE AREA WILL DOMINATE IN THE SHORT TERM.
SUNSHINE RETURNS TODAY! AS AN UPPER LEVEL RIDGE BEGINS TO BUILD IN. NW FLOW WILL FILTER IN COOLER AND DRIER AIR ACROSS THE REGION.
SUNSHINE RETURNS TODAY! AS AN UPPER LEVEL RIDGE BEGINS TO BUILD IN. NW FLOW WILL FILTER IN COOLER AND DRIER AIR ACROSS THE REGION. WEAK COLD FRONT CONTINUES TO PUSH SEWD THIS MORNING. 70/DD /ISSUED 248 AM CST MON DEC 7 2015/ A BROAD UPPER LEVEL TROUGH CONTINUES TO SLOWLY PUSH EAST ACROSS OHIO AND TN VALLEYS. UPPER LEVEL RIDGING WAS BEGINNING TO BUILD ACROSS THE DESERT SW AND INTO THE PLAINS. A COLD FRONT WAS JUST ENTERING THE FORECAST AREA. AS HIGH PRESSURE AND DRY AIR FILTER INTO THE AREA.
1124 AM CST MON DEC 7 2015 HIGH PRESSURE CONTINUES OVER THE AREA THIS MORNING. FOG WILL BURN OFF BY MID MORNING AND WITH HIGH PRESSURE IN CONTROL.
314 PM EST MON DEC 7 2015 A WEAK COLD FRONT WILL CROSS MOVE OFF THE MAINE COAST THIS EVENING.
WITH DEWPOINT TEMPERATURES IN THE LOWER TO MID 70S.
AS AN ANOMALOUS UPPER RIDGE BUILDS ALONG THE EAST COAST. UPPER LOW TRACKING INTO WESTERN PA THIS AFTERNOON WITH LITTLE FANFARE. WHILE THE WEAK UPPER LOW PROPOGATES EAST OF THE REGION. MINS WILL RANGE FROM THE MID 20S NORTH TO THE LOWER 30S SOUTH. AS ANOMALOUS UPPER RIDGE BUILDS ALONG THE E COAST. THE EXTENDED FCST APPEARS DRY AND INCREASINGLY WARM BENEATH BUILDING RIDGE. GEFS PLUME DATA AND ECEME MOS SUPPORT MIN TEMPS ABOVE FREEZING ACROSS THE ENTIRE CWA THU-SUN AND MAX TEMPS AT LEAST 15F ABV NORMAL. PUSHING A COLD FRONT INTO PA.
SURFACE OBS RUNNING A LITTLE WARMER THAN WAS FORECAST SO BUMPED UP TEMPS TO MATCH THE LATEST TRENDS AND IN LINE WITH THE LAV GUIDANCE. 88 A DRY COLD FRONT WILL PASS THROUGH ALABAMA TODAY. /ISSUED 559 AM CST MON DEC 7 2015/ A COLD FRONT WILL PUSH THROUGH THE AREA TODAY. THIS WILL USHER IN ANOTHER PUSH OF DRY AND SLIGHTLY COOLER AIR TO CENTRAL ALABAMA. A TROUGH WILL AMPLIFY ACROSS THE WEST AND A RIDGE ALONG AND EAST OF THE APPALACHIANS.
300 PM CST MON DEC 7 2015 BROAD REGION OF HIGH PRESSURE AT SFC AND ALOFT. AND WITH LIGHT SOUTHERLY FLOW SETTING UP ABOVE THE VERY SHALLOW COOLER LAYER SET UP BY FRONTAL BOUNDARY REMNANTS DRIFTING ACROSS AREA. TRENDING TOWARDS THE WARMER MAV TEMPS FOR NEXT COUPLE OF DAYS PER CURRENT TRENDS ON TEMPS AND DEWPOINTS.
247 PM MST MON DEC 7 2015 WEAK RIDGE REMAINS IN PLACE OVER THE SOUTHERN PLAINS THROUGH TOMORROW. SUBSIDENCE ALONG THE NORTHERN FRINGES OF THIS RIDGE WILL PROMOTE CONTINUED DRY CONDITIONS ACROSS THE CWA. THE HIGH TEMPERATURES FOR TUESDAY WILL BE DEPENDENT UPON THE CLOUD COVER SITUATION AS MOST GUIDANCE SUGGESTS THAT CLOUD COVER WILL BE SLOW TO EXIT THE REGION. HIGHS WILL LIKELY REACH THE LOWER 60S.
1126 AM EST MON DEC 7 2015 A WEAK COLD FRONT WILL CROSS THE REGION THIS AFTERNOON.
AND THEN A WEAK COLD FRONT TUESDAY MORNING PRODUCES A WIND SHIFT TO THE NORTHWEST. LIGHT WEST AND SOUTHWEST WINDS 5 TO 15 KNOTS WILL SHIFT TO THE NORTH AND NORTHEAST AFTER THE PASSAGE OF THE TROUGH AND THEN WILL BECOME LIGHT AND VARIABLE 5 TO 10 KNOTS OR LESS BY 22Z TODAY TO 00Z TUESDAY.
105 PM EST MON DEC 7 2015 HIGH PRESSURE REMAINS IN CONTROL TODAY. LOW PRESSURE WILL DEVELOP OFF THE MID-ATLANTIC COAST LATE TONIGHT AND PASS WELL SOUTH AND EAST OF LONG ISLAND ON TUESDAY.
347 PM CST MON DEC 7 2015 CLOUDY AND FOGGY CONDITIONS PERSISTED THROUGH MOST OF THE DAY TODAY AS HIGH PRESSURE LUMBERED TO THE EAST TODAY. THE HIGH PRESSURE IS MOVING TO THE EAST OF OUR AREA. WARMER TEMPS. HIGH TEMPS WILL AGAIN BE ABOVE NORMAL ACROSS THE AREA FROM THE UPPER 40S TO THE LOW 50S.
355 PM CST MON DEC 7 2015 AS HIGH PRESSURE MOVES OFF TO THE EAST WE SHOULD SEE THE RETURN OF VERY LIGHT ONSHORE WINDS ACROSS SE TX BY LATE TOMORROW. 41 LIGHT WIND REGIME TODAY AND TOMORROW AS RIDGE OF HIGH PRESSURE DRAPED ACROSS SETX/COASTAL BEND SLOWLY WEAKENS AND MOVES EAST.
WITH A WEAK U/L TROUGH DIPPING SOUTH OVER THE GULF OF MEXICO AND FLORIDA SUPPRESSING A SUB-TROPICAL RIDGE WHICH HAS PERSISTED FOR WEEKS ACROSS THE GULF AND FLORIDA. HIGH PRESSURE WILL BUILD OVER THE SOUTHEAST U. AND FLORIDA WITH SLIGHTLY DRIER COOLER AIR ADVECTING ACROSS WEST CENTRAL AND SOUTHWEST FLORIDA TONIGHT AND TUESDAY.
342 PM CST MON DEC 7 2015 SFC OBS AND ANALYSIS SHOWS 1025 MB RIDGE ORIENTED SW-NE FM ERN TX INTO THE LOWER MS VALLEY PROVIDING LT NELY WINDS OVER THE CWA. SEASONAL TEMPERATURES CAN BE EXPECTED OVERNIGHT TONIGHT WITH LOWS IN THE LOWER TO MIDDLE 40S AS THE RIDGE REMAINS OVER THE REGION. A DEEPER TROF WILL DIG OVER THE WRN CONUS. AS THE TROF MOVES EAST. THE UPPER LVL TROF WILL APPROACH THE AREA SAT INTO SUN. WITH A SFC COLD FRONT CROSSING TX AND MOVING TOWARD LA. BRINGING DRIER AIR AND COOLER TEMPERATURES.
234 PM EST MON DEC 7 2015 HIGH PRESSURE WILL BE IN CONTROL OF THE REGION FOR THE NEXT COUPLE OF DAYS RESULTING IN DRY WEATHER AND ABOVE NORMAL TEMPERATURES.
250 PM CST MON DEC 7 2015 A seasonably warm day is underway across the region this afternoon, with temperatures topping out in the low 60s in many spots--some 10-15 degrees above average. Temperatures may see a degree or two boost, with highs in the low to perhaps mid 60s area-wide.
326 PM EST MON DEC 7 2015 HIGH PRESSURE BUILDS IN FROM THE WEST TONIGHT. LOW PRESSURE DEEPENS OFF THE VIRGINIA COAST TUESDAY MORNING AND STAYS SOUTH OF THE GULF OF MAINE AND MOVES NORTHEAST.
243 PM EST MON DEC 7 2015 HIGH PRESSURE BRINGS DRY WEATHER THROUGH TUESDAY.
AS AN ANOMALOUS UPPER RIDGE BUILDS ALONG THE EAST COAST. UPPER LOW TRACKING INTO WESTERN PA THIS AFTERNOON WITH LITTLE FANFARE. WHILE THE WEAK UPPER LOW PROPOGATES EAST OF THE REGION. MINS WILL RANGE FROM THE MID 20S NORTH TO THE LOWER 30S SOUTH. AS AN ANOMALOUS UPPER RIDGE BUILDS ALONG THE E COAST.
1252 PM EST MON DEC 7 2015 WEAK LOW PRESSURE WILL BRING LIGHT RAIN CHANCES SOUTH OF I 70 TODAY BEFORE HIGH PRESSURE BUILDS IN TONIGHT AND TUESDAY. SOUTHERN TREND TO PRECIPITATION SHIELD CONTINUES AS UPPER LOW MOVES ACROSS. KEEPING SMALL CHANCES IN THE FAR SOUTHEAST THIS AFTERNOON AS SOME MOISTURE MAY RUN UP THE RIDGES. CL THE LOW SHOULD EXIT THE REGION THIS EVENING. WITH WEAK RIDGING BUILDING TONIGHT AND EARLY TUE. BROAD UPPER RIDGING IS PROGGED TO SET UP THROUGH SAT AS AN UPPER TROUGH DEEPENS ACROSS THE CNTRL CONUS. SHOWER CHCS SHOULD INCREASE AGAIN SUN AND MON AS THE TROUGH REACHES THE UPR OH VALLEY AND GREAT LAKES REGION. PRECIPITATION FROM PASSING UPPER LOW IS REMAINING SOUTH OF OUR REGION.
1213 PM EST MON DEC 7 2015 DRYING WILL OCCUR AS LOW PRESSURE OFF THE COAST MOVES FARTHER AWAY FROM THE FORECAST AREA.
355 AM EST THU DEC 10 2015 A WEAK TROUGH WILL MOVE OFFSHORE EARLY THIS MORNING. HIGH PRESSURE BUILDS OVER THE REGION THIS AFTERNOON.
SHORT WAVE TROUGH ALONG WITH A SURFACE FRONT/TROUGH WILL BRING WINDS AROUND TO THE WEST AND INCREASING WITH SCATTERED LIGHT RAIN SHOWERS DEVELOPING ACROSS THE NORTH TONIGHT. SURFACE TEMPERATURES WILL LIKELY REMAIN ABOVE FREEZING WITH 925MB TEMPERATURES AROUND +6C AND A PREDOMINANT WEST WIND.
303 AM EST THU DEC 10 2015 A WEAK TROUGH OF LOW PRESSURE WILL MOVE EAST OF THE SUSQUEHANNA VALLEY EARLY TODAY.
THE MID LEVEL TROUGHING STRENGTHENS OVERNIGHT AND THE SURFACE INVERTED TROUGHING TO THE EAST SHARPENS IN RESPONSE. HIGHS IN THE MID AND UPPER 70S SEVERAL DEGREES ABOVE THEIR NORMALS IN THE LOW AND MID 70S. MID 50S WEST AND NORTH OF INTERSTATE 4 TO THE MID 60S AT THE COAST COCOA BEACH SOUTH AND THE LOW AND MID 60S MAINLAND EAST OF INTERSTATE 95 MELBOURNE SOUTH. TROUGH ALOFT WILL DIG OVER THE WESTERN CONUS FRI-SAT WITH DOWNSTREAM RIDGE BUILDING OVER THE GULF AND ACROSS FLORIDA. WITH DEEP LAYER RIDGING.
310 AM EST THU DEC 10 2015 A WEAK TROUGH OF LOW PRESSURE WILL MOVE EAST OF THE SUSQUEHANNA VALLEY EARLY TODAY.
A DENSE FOG ADVISORY HAS BEEN ISSUED ACROSS SOUTHERN MIDDLE TENNESSEE AND UP ALONG THE LOWER CUMBERLAND PLATEAU TO ABOUT CROSSVILLE. STILL HAVE MOISTURE THAT HAS NOT BEEN SCOURED OUT IN THE LOWER LEVELS SO AM EXPECTING TO SEE SOME FOG DEVELOPMENT OVERNIGHT IMPROVING THURSDAY MORNING.
SOUTHERLY FLOW TO INCREASE ACROSS THE REGION TODAY ALLOWING FOR WARMER TEMPERATURES AND INCREASED CLOUD COVER AREAWIDE. HIGH TEMPERATURES TODAY ARE FORECAST TO CLIMB INTO THE LOW TO MID 70S.
TEMPERATURES ARE GENERALLY IN THE LOWER 70S WITH MOSTLY NORTH WINDS OF LESS THAN 10 MPH ALONG THE ISLAND CHAIN. A MODEST AND ELONGATED AREA OF HIGH PRESSURE IS DRAPED FROM THE SOUTH CENTRAL GULF OF MEXICO.
319 AM EST THU DEC 10 2015 AN UPPER LEVEL TROUGH WILL MOVE EAST THROUGH THE AREA THIS MORNING. HIGH PRESSURE WILL BUILD ACROSS THE AREA TODAY.
233 AM CST THU DEC 10 2015 PRIMARY CONCERN TODAY IS THE RAIN RISK AS THE LATEST TROUGH MOVES THROUGH THE UPPER MIDWEST. O7Z SURFACE ANALYSIS SHOWS THE LOW MOVING THROUGH THE EASTERN DAKOTAS AND REGIONAL RADAR LOOPS SHOW WIDESPREAD LIGHT RETURNS FROM ND ACROSS NORTHERN MN TOWARD LAKE SUPERIOR. AS TROUGH MOVES THROUGH OUR REGION TODAY THERE WILL BE PLENTY OF CLOUD COVER. BUT AS HAS BEEN THE CASE FOR THE LAST SEVERAL SHORT WAVE TROUGHS OF PACIFIC ORIGIN. WE WILL SEE SOME OF THE WARMER AIR MIXING DOWN SO SEEING HIGHS IN THE 50S TODAY REMAINS POSSIBLE DESPITE ALL THE CLOUDS. SYSTEM MOVES OUT TONIGHT WITH A BRIEF PERIOD OF HIGH PRESSURE AND SHOT OF COLD ADVECTION. FIRST SIGNIFICANT CLOSED CIRCULATION SPINNING OFF THE WASHINGTON COAST WITH STRONG JET ENERGY CUTTING UNDER IT AND DIGGING THE LONG WAVE TROUGH.
104 AM EST THU DEC 10 2015 A WEAK TROUGH OF LOW PRESSURE WILL PASS THROUGH EASTERN NC LATE TONIGHT. HIGH PRESSURE OVER THE SOUTHEAST STATES WILL MOVE NORTHEAST ACROSS EASTERN NC THROUGH THIS WEEKEND.
1122 PM EST WED DEC 9 2015 A WEAK COLD FRONT OVER WESTERN OHIO WILL MOVE EAST OF THE AREA TONIGHT.
345 AM EST THU DEC 10 2015 A TROUGH OF LOW PRESSURE WILL AFFECT THE AREA THIS MORNING. HIGH PRESSURE FROM THE SOUTHEAST WILL RIDGE UP ACROSS THE AREA LATER TODAY AND REMAIN THROUGH THE WEEKEND.
ASSOCIATED COMPLEX AREA OF LOW PRESSURE AND SURFACE BOUNDARY IS SNAKED ALONG INTERNATIONAL BORDER. MAIN UPPER LOW OVER SW SASK WILL ALSO PROPAGATE ESE QUICKLY TO THE WESTERN TIP OF LAKE SUPERIOR BY THIS EVENING. MILD/DRIER AIR ON SOUTHERN QUADRANT OF APPROACHING UPPER LOW WORKING INTO THE WEST AND BY SUNRISE MOST OF THE PCPN SHOULD BE EAST OF THE VALLEY. QUESTION WILL BE HOW MUCH PCPN WILL OCCUR WITH WRAP AROUND AS UPPER LOW PASSES THIS AFTERNOON. BEST POTENTIAL WILL BE ALONG INL BORDER AREA ON N SIDE OF UPPER LOW HOWEVER LATEST GUIDANCES KEEPS MOST OF IT NORTH OF THE BORDER. COLUMN COOLER HOWEVER CLOUDS SHOULD HOLD MINIMUMS IN THE 20S.
UPPER LEVEL DIVERGENCE AND 700 MB UPWARD MOTION AHEAD OF THE TROUGH. A FAIRLY STRONG AREA OF CYCLONIC VORTICITY ADVECTION MOVES ACROSS THE FORECAST AREA WITH THE 500 MB TROUGH AXIS.
ASSOCIATED COLD FRONT IS NEAR A KTPH-KRKS LINE. WINDS WILL RAMP UP TOMORROW AHEAD OF AN APPROACHING COLD FRONT WITH 700 MB FLOW PROGGED TO REACH THE 45-55 KT RANGE OVER WESTERN UTAH BY TOMORROW AFTERNOON.
THE LOWER CLOUDS MAY NOT GET TO MGM OR TOI BEFORE SUNRISE AND THE MIXING PROCESS COMMENCES.
124 AM EST THU DEC 10 2015 A WEAK LOW PRESSURE SYSTEM SWINGS ACROSS THE AREA OVERNIGHT.
/ISSUED 914 PM CST WED DEC 9 2015/ 03Z SURFACE MAP SHOWED A HIGH PRESSURE RIDGE OVER MUCH OF THE SOUTHEAST U. TEMPERATURES RANGE FROM THE UPPER 50S OVER NORTHEAST MISSISSIPPI TO THE LOWER 60S ELSEWHERE.
CHATTANOOGA AIRPORT, TN 45 64 49 66 / 20 0 0 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 46 60 47 64 / 10 0 0 10 OAK RIDGE, TN 45 61 47 64 / 10 0 10 10 TRI CITIES AIRPORT, TN 43 59 39 63 / 30 10 0 10.
OVERNIGHT TEMPERATURES ARE TRENDING WARMER THAN GUIDANCE AND FORECAST. A LEE TROUGH IS LOCATED ALONG THE ROCKIES. A WEAK COLD FRONT IS LOCATED OVER NORTHWESTERN NEBRASKA. THE PRIMARY WEATHER CONCERN WILL BE THE PASSAGE OF A COLD FRONT. A SIGNIFICANT TEMPERATURE DIFFERENCE IS UNLIKELY AS THE SOURCE REGION OF COOLER AIR IS JUST NORTH OF US. THIS FRONT SHOULD ONLY AMOUNT TO SLIGHTLY COOLER TEMPERATURES AND A BRIEF PERIOD OF GUSTY NORTHWEST WINDS. YET ANOTHER LEE TROUGH BEGINS TO DEEPEN ALONG THE ROCKIES.
THE TROUGH SHOULD MAKE IT EAST OF THE FORECAST AREA BY 18Z AND EAST OF IOWA AFTER 21Z. TEMPS ACROSS THE AREA SHOULD BE SEVERAL DEGREES WARMER TODAY THAN YESTERDAY AND HAVE KEPT MENTION OF RECORD/NEAR RECORD TEMPS ACROSS THE SOUTH.
1019 PM MST WED DEC 9 2015 LATEST ANALYSIS SHOWS COLD FRONT HAS MOVED INTO NORTHEASTERN WYOMING AND FAR NORTHWESTERN SOUTH DAKOTA FOLLOWED BY GUSTY NORTHWEST WINDS. THIS EVENING THROUGH THURSDAY NIGHT CURRENT SURFACE ANALYSIS SHOWS LOW PRESSURE OVER SOUTHWEST SK. WITH COLD FRONT ACROSS WESTERN MT INTO FAR EASTERN ID. UPPER LEVEL ANALYSIS SHOWS WEAK RIDGING OVER THE REGION. A COOLING TREND WILL TAKE PLACE FOR THE REST OF THE WEEK AS A SERIES OF UPPER LEVEL DISTURBANCES AND COLD FRONTS CROSS THE AREA IN FAST WEST-NORTHWEST FLOW ALOFT.
Models are generally not as warm today especially across southcentral Kansas is the consensus of MOS, and may be a result of with just how far the trough/cold front advances eastward today and the resulting wind trajectories. Most of the area is likely to reach around 60 degrees or slightly warmer, with more uncertainty regarding the possibility of warmer temperatures across the red hills region.
1206 AM EST THU DEC 10 2015 HIGH PRESSURE WILL PREVAIL OVERNIGHT INTO THE WEEKEND.
107 AM MST THU DEC 10 2015 UPDATED TO BEEF UP WINDS OVER AND NEAR THE HIGHER TERRAIN FOR THE EARLY MORNING HOURS AS EMBEDDED SHORT WAVE CONTINUES TO TRANSLATE ACROSS THE NORTHERN ROCKIES. SOME OF THE TYPICALLY COOLER LOCATIONS WILL BE A BIT MILDER TONIGHT. LEE TROUGH WILL BE ACROSS THE I-25 CORRIDOR WITH WARM SOUTHERLY WINDS OVER THE PLAINS.
1230 AM EST THU DEC 10 2015 A WEAK WARM FRONT WILL APPROACH TONIGHT AND MOVE THROUGH AREA OF THURSDAY.
Although high temperatureswill be a little above average (lower to mid 90s), the low humidity will make it feel a little more comfortable.
1237 PM EDT THU AUG 27 2015 A VERY SLOW MOVING UPPER LEVEL TROUGH OF LOW PRESSURE WILL MOVE ACROSS THE AREA ON TODAY. DRY WEATHER RETURNS FOR FRIDAY AS HIGH PRESSURE BUILDS INTO THE REGION FOLLOWED BY ANOTHER LOW CHANCE FOR PRECIPITATION OVER THE WEEKEND. EXPECT THIS TREND OF LOWERING POPS TO CONTINUE AS AXIS OF UPPER TROUGH MOVES EAST OF THE AREA THIS AFTERNOON.
621 AM CDT THU AUG 27 2015 EARLY MORNING SURFACE MAP INDICATES HIGH PRESSURE OVER NORTH CENTRAL ILLINOIS RESULTING IN A MOSTLY CLEAR SKY AND RATHER COOL TEMPERATURES.
WITH MUCH OF THE 950 TO 500 MB FRONTOGENESIS REMAINING ACROSS SOUTHERN MINNESOTA AND NORTHERN IOWA OVERNIGHT KEPT THE HIGHEST RAIN CHANCES MAINLY WEST OF THE MISSISSIPPI RIVER. THIS OCCURS AS A SHORT WAVE TROUGH LIFTS EAST NORTHEAST OUT OF NEBRASKA.
1034 AM EDT THU AUG 27 2015 UPDATE HIGH PRESSURE WILL BRING PARTLY CLOUDY SKIES AND MILDER TEMPERATURES TODAY. A LOW PRESSURE SYSTEM MOVING EAST FROM THE CENTRAL PLAINS WILL BRING INCREASING CLOUDS ON FRIDAY THEN NUMEROUS SHOWERS AND THUNDERSTORMS OVER THE WEEKEND. SATELLITE DOES SHOW INDICATIONS THAT IT IS TRYING TO ERODE AS 850MB RIDGING TAKES HOLD. HIGHS IN THE LOWER 70S LOOK REASONABLE IF WE CAN GET SOME SUNSHINE. EVEN THOUGH WE HAVE SFC RIDGING TODAY A MOSTLY SUNNY FORECAST IS NOT A SLAM DUNK. RELATED TO THERMAL TROUGHING STILL EXTENDING BACK TO THE SOUTHWEST FROM OUR OLD UPPER LOW IN ERN CANADA.
734 AM EDT THU AUG 27 2015 HIGH PRESSURE OVER THE OHIO VALLEY WILL MOVE EAST TODAY AND TONIGHT.
MONSOON MOISTURE WILL CONTINUE TO RE-CIRCULATE UNDER A MODERATELY STRONG RIDGE THROUGH FRIDAY. A DEEPENING LONG WAVE TROUGH OFF THE WEST COAST WILL PUSH THE RIDGE EAST OF OUR STATE.
MONSOON MOISTURE WILL CONTINUE TO RE- CIRCULATE UNDER A MODERATELY STRONG RIDGE THROUGH FRIDAY. A DEEPENING LONG WAVE TROUGH OFF THE WEST COAST WILL PUSH THE RIDGE EAST OF OUR STATE.
1207 PM EDT THU AUG 27 2015 HIGH PRESSURE ACROSS THE OHIO VALLEY TODAY WILL SETTLE ACROSS THE DELAWARE VALLEY BY FRIDAY AND THEN MOVE OFFSHORE THIS WEEKEND.
924 AM EDT THU AUG 27 2015 HIGH PRESSURE ACROSS THE OHIO VALLEY TODAY WILL SETTLE ACROSS THE DELAWARE VALLEY BY FRIDAY AND THEN MOVE OFFSHORE THIS WEEKEND.
747 AM EDT THU AUG 27 2015 WEAK MID LEVEL TROUGH AXIS ACROSS THE GULF OF MEXICO COMBINED WITH DEEP MOISTURE IN PLACE IS ALLOWING NUMEROUS SHOWERS AND THUNDERSTORMS TO CONTINUE ACROSS THE EXTREME SOUTHERN TIP OF FLORIDA THIS MORNING. /ISSUED 356 AM EDT THU AUG 27 2015/ OVERALL THE MAJOR SYNOPTIC FEATURES THAT WILL INFLUENCE SOUTH FLORIDA OVER THE NEXT SEVERAL DAYS INCLUDE A LARGE AMPLITUDE UPPER LEVEL TROUGH ACROSS THE EASTERN CONUS THAT EXTENDS INTO THE CENTRAL GULF AND TROPICAL STORM ERIKA WHICH IS CURRENTLY APPROACHING THE LEEWARD ISLANDS ON A GENERALLY WESTWARD TRACK. FORECAST SOUNDINGS INDICATE MUCH COOLER MID LEVEL TEMPERATURES FOR THIS TIME OF YEAR AND PWATS IN EXCESS OF TWO INCHES SHOULD CONTINUE TODAY AND FRIDAY.
DEEP MOISTURE AND SW FLOW AHEAD OF A TROUGH ALOFT WILL ALLOW FOR SCATTERED TO NUMEROUS SHRA/TSRA TO DVLP ACROSS E CENTRAL FL. FOR ALL TERMINALS WITH THE HIGHEST CONCENTRATION OF STORMS EXPECTED FROM 18Z-23Z.
1243 PM EDT THU AUG 27 2015 HIGH PRESSURE OVER THE OHIO VALLEY WILL MOVE EAST TODAY AND TONIGHT.
WEAK HIGH PRESSURE WILL BUILD INTO THE AREA FROM THE NORTH THIS WEEKEND. WEAK ZONAL FLOW DEVELOPS FRIDAY WITH THE UPPER RIDGE OVER BERMUDA BUILDING WEST TOWARDS THE SOUTHEASTERN STATES.
1132 AM EDT THU AUG 27 2015 HIGH PRESSURE OVER THE CENTRAL GREAT LAKES THIS MORNING WILL DRIFT EASTWARD THROUGH FRIDAY. A WARM FRONT WILL MOVE INTO OHIO FRIDAY NIGHT.
749 AM EDT THU AUG 27 2015 A VERY SLOW MOVING UPPER LEVEL TROUGH OF LOW PRESSURE WILL MOVE ACROSS THE AREA ON TODAY. DRY WEATHER RETURNS FOR FRIDAY AS HIGH PRESSURE BUILDS INTO THE REGION FOLLOWED BY ANOTHER LOW CHANCE FOR PRECIPITATION OVER THE WEEKEND. BASE OF 500MB TROUGH WILL MOVE ACROSS THE NORTH COUNTRY TODAY, PRODUCING PLENTIFUL CLOUDS AND A SLIGHT CHANCE TO LOW CHANCE FOR ISOLATED SHOWERS, MAINLY IN THE MORNING. AFTER 18Z, MODELS SHOW THE BASE OF THE TROUGH WILL BE MOVING INTO NH AND ME. THERE WILL BE A GRADUAL INCREASE IN MID LEVEL HEIGHTS WHILE AT THE SURFACE, RIDGE OF HIGH PRESSURE BUILDS IN. HIGH TEMPERATURES WILL BE BELOW NORMAL, RANGING FROM MID 60S TO MID 70S AND SLIGHTLY COOLER IN THE HIGH TERRAIN.
AREAS WITH EXTENSIVE LOW CLOUDS WERE INHIBITING INSOLATION THEREFORE ARE RUNNING A FEW DEGREES COOLER THAN EARLIER FORECASTS. CHATTANOOGA AIRPORT, TN 84 66 88 68 / 0 0 10 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 82 63 86 67 / 10 0 10 10 OAK RIDGE, TN 82 63 86 67 / 10 0 10 10 TRI CITIES AIRPORT, TN 82 60 85 60 / 10 10 10 10.
BUT SLIGHTLY WARMER DAY IS UNDERWAY ACROSS MID TN. TEMPS WILL TOP OUT 1-4 DEGREES WARMER THAN THE PAST COUPLE OF DAYS. WITH HIGHS MAINLY IN THE LOWER TO MID 80S. RIDGE OF HIGH PRESSURE REMAINS SITUATED TO OUR WEST WITH A FEW CLOUDS TODAY AND VFR WX THE NEXT 24 HRS. WARMING TREND COMMENCES TODAY, AS UPPER TROUGH OVER OUR AREA STARTS TO WEAKEN.
UPPER LEVEL TROUGHING STILL IN PLACE ACROSS THE EASTERN CONUS WITH RIDGING ACROSS THE DESERT SOUTHWEST. AT THE SFC NORTHERLY FLOW CONTINUES ACROSS ALABAMA WITH HIGH PRESSURE TO THE NORTH OVER THE GREAT LAKES REGION. SKIES ARE CLEAR AND TEMPS HAVE FALLEN INTO THE LOW/MID 60S IN MOST LOCATIONS. DRY CONDITIONS WILL CONTINUE TODAY WITH TEMPS A COUPLE DEGREES WARMER THAN YESTERDAY. SFC WINDS WILL BECOME EASTERLY ON FRIDAY AS THE RIDGE TRANSLATES EASTWARD TOWARD THE ATLANTIC COAST.
RIDGE OF HIGH PRESSURE REMAINS SITUATED TO OUR WEST WITH A FEW CLOUDS TODAY AND VFR WX THE NEXT 24 HRS. WARMING TREND COMMENCES TODAY, AS UPPER TROUGH OVER OUR AREA STARTS TO WEAKEN.
758 AM EDT THU AUG 27 2015 AN UNSEASONABLY STRONG UPPER TROUGH. HIGH PRESSURE WILL THEN BUILD INTO THE REGION FRIDAY AND SLOWLY DRIFT OFF THE EAST COAST OVER THE WEEKEND. MUCH WARMER TEMPERATURES WILL MOVE INTO REGION FOR THE WEEKEND. MAINLY CLEAR SKIES WERE NOTED ACROSS THE LOWER SUSQ VALLEY. TEMPS EARLY TODAY WILL BE MAINLY IN THE LOWER TO MID 50S. TO AROUND 60F IN THE URBAN AREAS OF THE LOWER/MID SUSQ VALLEY.
/ISSUED 251 AM MDT THU AUG 27 2015/ A LARGE LOW PRESSURE SYSTEM REMAINS POSITIONED OFF THE COAST OF THE PACIFIC NORTHWEST.
HIGH PRESSURE TO THE NORTH TO ALLOW FOR NORTHEAST WINDS AROUND 5 TO 10 KNOTS TODAY.
957 AM EDT THU AUG 27 2015 AN UPPER LEVEL TROUGH OF LOW PRESSURE WILL MOVE OVER THE REGION TODAY AND LIFT NORTHEAST OF THE AREA TONIGHT.
1040 AM EDT THU AUG 27 2015 AN UNSEASONABLY STRONG UPPER TROUGH WILL LEAD TO ONE MORE DAY OF COOL CONDITIONS BEFORE MOVING EAST OF THE REGION BY FRIDAY. HIGH PRESSURE WILL THEN BUILD INTO THE REGION FRIDAY AND SLOWLY DRIFT OFF THE EAST COAST OVER THE WEEKEND. MUCH WARMER TEMPERATURES WILL MOVE INTO REGION FOR THE WEEKEND. TO THE U70S ACROSS THE LOWER SUSQ VALLEY. WITH A FEW GUSTS INTO THE LOWER TEENS DURING THE TIME OF PEAK VERTICAL MIXING FROM LATE MORNING THROUGH MID AFTERNOON. UPPER TROUGH LIFTS NE ACROSS THE CANADIAN MARITIMES. IN THE MID TO UPPER 40S ACROSS THE HIGHER TERRAIN OF THE NORTH AND WEST. AND IN THE LOWER TO MID 50S ELSEWHERE.
1055 AM MDT THU AUG 27 2015 THE UPPER LEVEL TROUGH CONTINUES TO MOVE ACROSS THE CWA THIS MORNING AS AN ACCOMPANYING VORT MAX KEEPS SHOWERS AND SOME RUMBLES OF THUNDER GOING THROUGH THE OVERNIGHT PERIOD. HIGH PRESSURE BUILDS BACK IN AS GENERALLY LIGHT NORTHERLY FLOW SETS UP OVER THE AREA. BUT MODELS ARE REALLY BACKING OFF ON COVERAGE AS STABILITY INCREASES THANKS TO HIGH PRESSURE.
731 AM EDT THU AUG 27 2015 A VERY SLOW MOVING UPPER LEVEL TROUGH OF LOW PRESSURE WILL MOVE ACROSS THE AREA ON TODAY. DRY WEATHER RETURNS FOR FRIDAY AS HIGH PRESSURE BUILDS INTO THE REGION FOLLOWED BY ANOTHER LOW CHANCE FOR PRECIPITATION OVER THE WEEKEND. BASE OF 500MB TROUGH WILL MOVE ACROSS THE NORTH COUNTRY TODAY, PRODUCING PLENTIFUL CLOUDS AND A SLIGHT CHANCE TO LOW CHANCE FOR ISOLATED SHOWERS, MAINLY IN THE MORNING. AFTER 18Z, MODELS SHOW THE BASE OF THE TROUGH WILL BE MOVING INTO NH AND ME. THERE WILL BE A GRADUAL INCREASE IN MID LEVEL HEIGHTS WHILE AT THE SURFACE, RIDGE OF HIGH PRESSURE BUILDS IN. HIGH TEMPERATURES WILL BE BELOW NORMAL, RANGING FROM MID 60S TO MID 70S AND SLIGHTLY COOLER IN THE HIGH TERRAIN.
1003 AM EDT THU AUG 27 2015 HIGH PRESSURE OVER THE CENTRAL GREAT LAKES THIS MORNING WILL DRIFT EASTWARD THROUGH FRIDAY. A WARM FRONT WILL MOVE INTO OHIO FRIDAY NIGHT.
629 AM CDT THU AUG 27 2015 COOL HIGH PRESSURE REMAINS OVER THE MISSISSIPPI AND GREAT LAKES REGIONS EARLY TODAY. THIS ACTIVITY IS SLIDING EAST SOUTHEAST ALONG THE WARM FRONTAL SLOPE. THE QUESTIONS ON WHERE THE UPPER LOW DEVELOPS AND WHERE IS MOVES. INSTEAD OF TRACKING SOME LARGE JET OR WATCHING THE SLOW EVOLUTION OF AN UPPER LOW EXITING A DEEP TROF. LOWS UNDER THE INCREASED CLOUDS SHOULD BE WARMER THAN PAST NIGHTS. GENERALLY IN THE LOWER 60S WEST TO UPPER 50S EAST.
740 AM EDT THU AUG 27 2015 HIGH PRESSURE OVER THE CENTRAL GREAT LAKES THIS MORNING WILL DRIFT EASTWARD THROUGH FRIDAY. A WARM FRONT WILL MOVE INTO OHIO FRIDAY NIGHT.
LITTLE PIECES OF ENERGY MOVING EAST AROUND THE RIDGE WILL HELP GIVE CENTRAL AND WESTERN LOCATIONS CHANCES FOR RAIN AND THUNDERSTORMS THIS AFTERNOON. UNSURE IF WE WILL REALIZE THE HIGHER CAPES.