Aikyam-Lab/Synoptic-Bench huggingface dataset:
THIS WILL PROMOTE COOLER TEMPERATURES WITH LOWS IN THE MID TO UPPER 50S FOR MOST AREAS NORTH OF A LINE FROM GAINESVILLE TO JACKSONVILLE. HIGH CLOUDS STREAMING OUT OF THE GULF OF MEXICO WILL KEEP IT FROM GETTING ANY COOLER. HIGH PRESSURE WILL KEEP BENIGN CONDITIONS IN PLACE TONIGHT AND WEDNESDAY WITH VARIABLE WINDS AT OR BELOW 10 KNOTS AND SEAS AT 2 FT OR LESS.
1049 PM EDT TUE APR 21 2015 A FRONT WILL PUSH EAST INTO THE MARITIMES TONIGHT AS A WEAK RIDGE OF HIGH PRESSURE BUILDS IN FROM THE WEST. A SECONDARY COLD FRONT WILL APPROACH FROM THE WEST ON WEDNESDAY AND WILL SLOWLY CROSS THE REGION WEDNESDAY NIGHT.
636 PM CDT TUE APR 21 2015 BROAD UPPER LEVEL LOW CENTERED OVER THE GREAT LAKES REGION WILL WOBBLE EASTWARD OVERNIGHT. WITH WARMING THERMAL PROFILES HIGHS WILL BE A FEW DEGREES WARMER. IN THE LOWER 50S EAST TO UPPER 50S WEST. STAYED ON THE LOW SIDE OF GUIDANCE WITH RESPECT TO DEWPOINTS.
1049 PM EDT TUE APR 21 2015 A LARGE UPPER LEVEL LOW PRESSURE SYSTEM ACROSS THE GREAT LAKES AND ONTARIO WILL DRIFT SLOWLY EASTWARD THROUGH THE END OF THE WEEK. SOME SNOW SHOWERS IN THE HIGHER ELEVATIONS. GENERALLY MORE OF THE SAME FOR THE ENTIRETY OF THE SHORT TERM FORECAST AS VERTICALLY STACKED LOW PRESSURE SYSTEM MEANDERS FROM NORTH OF THE GREAT LAKES TOWARDS MAINE. SEVERAL WEAK DISTURBANCES PASS THROUGH UPPER LEVEL TROF BRINGING FURTHER CHANCES FOR RAIN AND SNOW SHOWERS.
THERE IS A SLIGHT CHANCE FOR AN ISOLATED THUNDERSTORM ACROSS HIGHER ELEVATIONS OF THE INTERIOR THIS EVENING AS AN UPPER LEVEL TROUGH MOVES ACROSS THE REGION.
1210 AM EDT WED APR 22 2015 UPPER LEVEL LOW PRESSURE OVER THE GREAT LAKES WILL MAINTAIN COOL AND UNSETTLED WEATHER THROUGH THE WEEK. 35 TO 40 MPH ON THE RIDGES. SHOWER CHANCES WILL PERSIST GIVEN THE DEEP MIXING LAYER RESULTING FROM A DEEP MID LEVEL THERMAL TROUGH WITH THE LOW. BETTER PROBABILITIES WERE FORECAST OVER THE I 80 CORRIDOR AND RIDGES GIVEN LAKE MOISTURE AND UPSLOPE EHNANCEMENTS.
930 PM EDT TUE APR 21 2015 UPPER LEVEL LOW PRESSURE OVER THE GREAT LAKES IS EXPECTED TO KEEP COOL AND UNSETTLED WEATHER THROUGH MUCH OF THE WEEK. THE MAIN UPPER TROUGH WILL START TO SAG FARTHER SOUTHEASTWARD FROM HUDSON BACK TOWARD EASTERN ONTARIO BY WEDNESDAY NIGHT.
IT WILL BE QUITE COOL WITH LOWS DIPPING INTO THE LOWER TO MID 30S. TEMPERATURES WILL BE JUST A TAD COOLER THAN ON TUESDAY. WINDS WILL BEGIN TO DIMINISH THIS EVENING AS A COLD FRONT SWEEPS ACROSS THE AREA. NORTH ATLANTIC BLOCKING WILL KEEP TROUGHING/NW FLOW PATTERN IN PLACE THROUGH THE EXTENDED RESULTING IN A CONTINUATION OF BELOW NORMAL TEMPS AND SEVERAL OPPORTUNITIES FOR EARLY MORNING FROST FORMATION.
919 PM CDT TUE APR 21 2015 SHOWERS SHIFTING EAST THIS EVENING ALONG A WEAK DISTURBANCE IN THE LOW TO MID-LEVEL ZONAL FLOW. CONDITIONS TO IMPROVE FROM MOSTLY CLOUDY TO PARTLY CLOUDY OVERNIGHT AS WEAK RIDGING SETS IN.
07 /ISSUED 245 PM CDT TUE APR 21 2015/ THE 19Z SURFACE ANALYSIS INDICATED THAT A DECENT RIDGE OF HIGH PRESSURE WAS CENTERED OVER WEST CENTRAL MISSISSIPPI. WILL TREND TOWARD THE SLIGHTLY COOLER NAM TEMPS FOR OVERNIGHT LOW TEMPS. A COLD FRONT IS PROGGED BY THE MODELS TO PROGRESSIVELY MOVE SOUTHEAST FROM THE MIDWEST INTO THE LOWER OHIO VALLEY OVERNIGHT AND INTO MIDDLE TENNESSEE BY 18Z WEDNESDAY.
824 PM EDT TUE APR 21 2015 A LOW PRESSURE SYSTEM WILL APPROACH FROM THE MIDWEST TONIGHT.
737 PM EDT TUE APR 21 2015 A LARGE UPPER LEVEL LOW PRESSURE SYSTEM ACROSS THE GREAT LAKES AND ONTARIO WILL DRIFT SLOWLY EASTWARD THROUGH THE END OF THE WEEK. SOME SNOW SHOWERS IN THE HIGHER ELEVATIONS. UPPER LEVEL LOW WILL CONTINUE TO SLIDE SLOWLY EASTWARD FROM NORTH OF THE GREAT LAKES. GENERALLY MORE OF THE SAME FOR THE ENTIRETY OF THE SHORT TERM FORECAST AS VERTICALLY STACKED LOW PRESSURE SYSTEM MEANDERS FROM NORTH OF THE GREAT LAKES TOWARDS MAINE. SEVERAL WEAK DISTURBANCES PASS THROUGH UPPER LEVEL TROF BRINGING FURTHER CHANCES FOR RAIN AND SNOW SHOWERS.
Tonight, a weak cold front is expected to move through the region. With cooler and drier air moving into the region, patchy frost continues to look possible across the northern tier of Missouri late tonight and early tomorrow morning.
750 PM EDT TUE APR 21 2015 UPPER LEVEL LOW PRESSURE IS EXPECTED TO KEEP COOL AND UNSETTLED WEATHER THROUGH MUCH OF THE WEEK. THE MAIN UPPER TROUGH WILL START TO SAG FARTHER SOUTHEASTWARD FROM HUDSON BACK TOWARD EASTERN ONTARIO.
1000 PM EDT TUE APR 21 2015 A BROAD AREA OF LOW PRESSURE WILL CONTINUE TO DOMINATE THE WEATHER OVER THE GREAT LAKES OVER THE NEXT COUPLE OF DAYS. THIS WEATHER SYSTEM WILL SUPPORT COOLER THAN NORMAL TEMPERATURES AND THE CHANCE FOR SOME ON AND OFF RAIN SHOWERS. OVERNIGHT EXPECT THE TOLEDO AREA WILL HAVE A MUCH LOWER CHANCE THAN MARION TO YOUNGSTOWN AS A PIECE OF JET ENERGY MOVES THROUGH THE UPPER TROUGH AND PROVIDING THE NEEDED SUPPORT FOR ON AND OFF SHOWERS THROUGH THE NIGHT THERE. THE UPPER LOW WILL MEANDER AND WEAKEN OVER THE NEXT FEW DAYS.
911 PM MDT TUE APR 21 2015 GENERALLY QUIET WEATHER IS EXPECTED TONIGHT AS A RIDGE OF HIGH PRESSURE MOVES OVER THE REGION. HIGH PRESSURE WILL DRIFT EAST ACROSS THE STATE TONIGHT AND WEDNESDAY. A COLD FRONT WILL MOVE INTO WESTERN MT WITH SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPING OVER THE WESTERN AND SW MT MTNS LATE IN THE AFTERNOON AND SPREADING EAST OVER INTO CENTRAL AND SW MT WEDNESDAY EVENING.
A SLOW MOVING LOW PRESSURE SYSTEM WITH SEVERAL EMBEDDED WEATHER DISTURBANCES WILL CROSS THE REGION THROUGH THE END OF THE WEEK. WATER VAPOR LOOP SHOWS AN EXPANSIVE CLOSED LOW OFF THE CENTRAL CALIFORNIA COAST. BUT SHOULD SEE THE LOWER LEVELS CONTINUE TO MOISTEN OVER NORTHERN UTAH THIS EVENING.
1251 AM EDT FRI MAY 15 2015 A RIDGE OF HIGH PRESSURE WILL CREST ACROSS THE REGION OVERNIGHT WITH MAINLY CLEAR SKIES THROUGH FRIDAY MORNING. A WARM FRONT APPROACHING FROM THE SOUTHWEST WILL BRING AN INCREASE IN CLOUDS FRIDAY AFTERNOON AND A CHANCE OF SHOWERS FRIDAY NIGHT.
THIS ACTIVITY SHOULD MOVE EAST DURING THE OVERNIGHT HOURS BUT WILL LIKELY WEAKEN AS THE MAIN TROUGH REMAINS WELL WEST AND INHIBITION INCREASES SLIGHTLY ACROSS NORTH TEXAS. WITH THE MAIN UPPER TROUGH STILL OVER SOUTHERN CALIFORNIA AND WESTERN ARIZONA TOMORROW EVENING.
742 PM EDT THU MAY 14 2015 UPPER RIDGING REMAINS STRONG ENOUGH TO COUNTERACT ANY WIDESPREAD CONVECTIVE DEVELOPMENT THROUGH THE AFTERNOON AND EARLY EVENING HOURS. THE PLACEMENT OF THE UPPER RIDGE/SUBSIDENCE HAS LED TO A RELATIVELY DRIER ATMOSPHERIC PROFILE, THAN EARLIER IN THE WEEK.
1228 AM EDT FRI MAY 15 2015 HIGH PRESSURE WILL BUILD SOUTH OF THE REGION TODAY THROUGH FRIDAY.
Winds will be mainly from the south tonight and Friday, with the higher speeds and gusts expected at KABI. Flash Flood Watch west of a Sweetwater to Junction line A large upper low will move over the southwest CONUS tonight enhancing the southwest flow aloft over the forecast area. After morning lows in the mid 60s tomorrow, will see afternoon highs in the lower 80s with some clearing from the west through the afternoon. Following tonight's potentially heavy rainfall, we remain under southwest flow aloft Friday/Friday night as the main upper level low moves east into New Mexico, and the dryline backed well to the west of our area once again.
SURFACE AND UPPER RIDGE STRENGTHENS OVER THE TENNESSEE VALLEY ON FRIDAY SO ONLY HIT AND MISS SCATTERED CONVECTION LOOKS POSSIBLE.
BLANK AN UPPER LEVEL LOW PRESSURE SYSTEM CENTERED OFF THE WEST COAST WILL MOVE OVER THE NORTHERN GREAT BASIN BY FRIDAY.
UPPER RIDGE SLIPS FURTHER EAST TOWARD THE ATLANTIC SEABOARD. THIS WILL LEAD TO INCREASING MOISTURE EVENTUALLY IN SUFFICIENT SUPPLY IN THE LOW LEVELS FOR THE GENERATION OF SHOWERS AND A COUPLE THUNDERSTORMS ACROSS MUCH OF THE GREAT VALLEY.
AN UPPER LEVEL TROUGH, LOCATED OVER SOUTHEAST CALIFORNIA AT 12Z THURSDAY, WILL LIFT NORTHEAST TODAY. SCATTERED EVENING THUNDERSTORMS WILL BE POSSIBLE OVER WEST CENTRAL KANSAS WHICH WILL BE NEAR THIS DEEPENING LEE TROUGH BASED ON IMPROVING 0-1KM MOISTURE CONVERGENCE AND MID LEVEL INSTABILITY. OVERNIGHT 850MB WARM AIR ADVECTION AND MOISTURE IMPROVES AHEAD OF AN UPPER LEVEL TROUGH WHICH WILL BE CROSSING SOUTHWEST KANSAS BETWEEN 06Z AND 12Z FRIDAY.
735 PM EDT THU MAY 14 2015 A RIDGE OF HIGH PRESSURE WILL SLOWLY SHIFT EAST THROUGH EARLY THIS EVENING AS AN UPPER LEVEL DISTURBANCE MOVES NORTHEAST OUT OF THE CENTRAL PLAINS TO THE WESTERN GREAT LAKES. PUSHED BACK THE HIGHEST POPS TO BETWEEN THE 09Z TO 15Z TIMEFRAME. UPPER RIDGING BUILDS OVER THE REGION. GRIDDED HIGHS IN THE LOW/MID 70S ACROSS S CENTRAL LWR MI MAY BE TOO COOL IF OVERNIGHT PRECIP/CONVECTION IS MINIMAL AND/OR LATE MORNING/EARLY AFTERNOON CLEARING ALLOWS FOR BETTER THAN ANTICIPATED INSOLATION. NAM/WRF/SREF WOULD SUGGEST WARM FRONT HANGING UP ALONG/NORTH OF US-6.
748 PM EDT THU MAY 14 2015 DRY WEATHER THIS AFTERNOON UNDER HIGH PRESSURE AT THE SURFACE AND ALOFT. UPPER RIDGE AXIS OVER THE EASTERN PART OF THE COUNTRY WILL WEAKEN A BIT OVERNIGHT. THE LOW LEVEL EASTERLY FLOW WILL RESULT IN CONSIDERABLE LOW CLOUDINESS LATE TONIGHT. LOWS TONIGHT MAINLY IN THE LOW TO MID 60S IN THE UPPER 50S TO LOWER 60S. HIGH PRESSURE WILL BE OVER THE WESTERN ATLANTIC WITH SOUTHEASTERLY FLOW PUSHING MOISTURE BACK INTO THE REGION. AS THE HIGH SLIDES FURTHER INTO THE ATLANTIC FRIDAY AFTERNOON MOISTURE RETURN WILL STRENGTHEN WITH PWAT VALUES RISING TO BETWEEN 1.
BEST 850 MB MSTR IS OVER N TX/S OK BUT DISCERNIBLE TROUGHS WERE NOTED OVER THE STATE.
WATCHING A WARM FRONT BEGIN TO LIFT NORTHWARD THIS AFTERNOON. WITH THE WARM FRONT TO THE NORTH OF THE AREA.
/ISSUED 406 PM CDT THU MAY 14 2015/ PARTLY CLOUDY SKIES TODAY HAS ALLOWED TEMPERATURES TO CLIMB INTO THE LOW TO MID 80S.
EXPECT THIS TO CUT DOWN ON THE RIDGE VALLEY SPLIT TEMPERATURE DIFFERENCES OVERNIGHT COMPARED TO PREVIOUS NIGHTS. THIS WILL SHIFT THE AXIS OF THE UPPER RIDGE TO OUR EAST. THE UPPER RIDGE WILL REAMPLIFY ON FRIDAY AND TRIGGERS FOR CONVECTION ARE HARD TO FIND. WITH INCREASING MOISTURE AND INSTABILITY ANTICIPATE AT LEAST A FEW SHOWERS/STORMS TO FIRE WITH DAYTIME HEATING WITH THE BEST CHANCES OVER THE HIGHER TERRAIN OF SOUTHEAST KENTUCKY.
Much cooler temps expected with this ridge which will remain in place thru Tues. Warm front slowly lifting through the region tonight will continue to agitate the atmosphere enough for a mention of showers at KUIN. Specifics for KSTL: Warm front lifting north of the terminal should provide VFR conditions tonight with the best threat of showers and thunderstorms remaining just to the north through sunrise.
TEMPERATURES WILL BE COOLER THAN NORMAL THROUGH THE PERIOD. AN UPPER LOW CURRENTLY CENTERED OFFSHORE WEST OF MONTEREY TRIGGERED SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ACROSS OUR REGION TODAY. THIS SEEMS REASONABLE GIVEN THAT THE UPPER LOW IS FORECAST TO TRACK INLAND OVER FAR SOUTHERN CA ON FRIDAY. WITH AN UPPER RIDGE CENTERED OVER WESTERN CANADA AND A TROUGH OVER THE WEST COAST OF THE UNITED STATES. EVEN WITH THIS PERSISTENT TROUGH OVER CALIFORNIA. AND INSTEAD CONFINE ALL PRECIP TO THE HIGHER MOUNTAINS OF NORTHERN AND EASTERN CALIFORNIA. OUR FORECAST CALLS FOR PARTLY CLOUDY SKIES AND CONTINUED COOLER-THAN-NORMAL WEATHER. RADAR IMAGERY CONTINUES TO SHOW NUMEROUS SHOWERS ACROSS THE REGION AT THIS HOUR WITH MODELS INDICATING SHOWERS WILL DISSIPATING OVER THE NEXT FEW HOURS AS THE LOW SHIFTS EAST. KSFO BRIDGE APPROACH.
/ISSUED 417 PM CDT THU MAY 14 2015/ WATER VAPOR CHANNEL AND VISIBLE BOTH SHOW EXTENSIVE HIGH LEVEL MOISTURE/CIRRUS STREAMING NORTHEASTWARD ACROSS NEW MEXICO INTO THE SOUTHERN AND CENTRAL PLAINS AHEAD OF A DEEP WEST COAST MID-UPPER LOW.
05/MA /ISSUED 328 PM CDT THU MAY 14 2015/ WATCHING A WARM FRONT BEGIN TO LIFT NORTHWARD THIS AFTERNOON. WITH THE WARM FRONT TO THE NORTH OF THE AREA.
UPPER LOW OFF THE CA COAST WILL SWING INLAND OVER SRN CA TONIGHT AND FRIDAY THEN LIFT NORTHEAST ACROSS COLORADO INTO NE BY SAT NIGHT.
AS HIGH PRESSURE BUILDS IN ACROSS THE EASTERN SEABOARD. TEMPERATURES OVERNIGHT WILL BE SLIGHTLY WARMER THAN LAST NIGHT WITH UPPER 60S ACROSS MUCH OF THE AREA AND LOW 70S ACROSS COASTAL COMMUNITIES. WENT SLIGHTLY WARMER THAN GUIDANCE ON FRIDAY AFTERNOON WITH TEMPERATURES RISING INTO THE MID TO UPPER 80S.
913 PM EDT THU MAY 14 2015 A STRONGER EASTERLY WIND FLOW KEPT THE WEST COAST SEA BREEZE BOUNDARY CLOSE TO THE COAST DURING THE AFTERNOON AND THIS IS WHERE THE HIGHEST COVERAGE OF STORMS OCCURRED AS THE EAST/WEST COAST BOUNDARIES COLLIDED LATE IN THE AFTERNOON.
/ISSUED 742 PM EDT THU MAY 14 2015/ UPPER RIDGING REMAINS STRONG ENOUGH TO COUNTERACT ANY WIDESPREAD CONVECTIVE DEVELOPMENT THROUGH THE AFTERNOON AND EARLY EVENING HOURS. THE PLACEMENT OF THE UPPER RIDGE/SUBSIDENCE HAS LED TO A RELATIVELY DRIER ATMOSPHERIC PROFILE, THAN EARLIER IN THE WEEK.
755 PM EDT THU MAY 14 2015 A RIDGE OF HIGH PRESSURE WILL CREST ACROSS THE REGION OVERNIGHT WITH MAINLY CLEAR SKIES THROUGH FRIDAY MORNING. A WARM FRONT APPROACHING FROM THE SOUTHWEST WILL BRING AN INCREASE IN CLOUDS FRIDAY AFTERNOON AND A CHANCE OF SHOWERS FRIDAY NIGHT.
1024 PM EDT THU MAY 14 2015 HIGH PRESSURE OVERHEAD WILL MOVE TO THE EAST ON FRIDAY. A WARM FRONT WILL THEN APPROACH FRIDAY NIGHT.
1021 PM EDT THU MAY 14 2015 HIGH PRESSURE OVER THE MID ATLANTIC STATES WILL MOVE OFF THE EAST COAST FRIDAY. A WARM FRONT FROM THE LOWER OHIO VALLEY WILL MOVE NORTH ACROSS LAKE ERIE BY LATE FRIDAY.
853 PM EDT THU MAY 14 2015 HIGH PRESSURE WILL BUILD SOUTH OF THE REGION TODAY THROUGH FRIDAY.
HIGH PRESSURE ALONG THE MID ATLANTIC COAST WILL EXTEND SOUTHWESTWARD INTO THE CAROLINAS TONIGHT. A SOUTHERLY RETURN FLOW WILL GRADUALLY DEVELOP FRIDAY INTO THE WEEKEND AS HIGH PRESSURE SHIFTS OFFSHORE THE MID ATLANTIC COAST. S/W RIDGING ALOFT WILL DAMPEN SOME TONIGHT AS A WEAK S/W DISTURBANCE APPROACHES FROM THE WEST AND MOVES ACROSS THE REGION LATE TONIGHT. BUT CONTINUE RIDGING INTO THE AREA THROUGH FRIDAY NIGHT AS IT MEANDERS OFFSHORE. AND LOWS A FEW DEGREES WARMER THAN TONIGHT. WITH BERMUDA HIGH PRESSURE OFFSHORE. RIDGING WESTWARD INTO THE REGION AND FAIRLY STRONG MID LEVEL RIDGING OVERHEAD.
1142 PM EDT THU MAY 14 2015 HIGH PRESSURE WILL DRIFT OFF THE MID ATLANTIC COAST BY EARLY FRIDAY. A WARM FRONT WILL LIFT NORTHEAST INTO THE REGION FRIDAY AND FRIDAY NIGHT.
THIS WILL CERTAINLY INCREASE THE LOW LEVEL CLOUDINESS ACROSS THE AREA. SAT-SUN: UPPER FLOW WILL BECOME INCREASING UNIDIRECTIONAL LEADING TO FURTHER INFUX OF LOW LEVEL MOISTURE ON SAT AS DEEP TROUGH APPROACHES. PRECIPITATION WILL BE EXITING SOUTHEAST KS IN THE MORNING AS COOLER/DRIER AIR OVERSPREADS THE AREA.
AN ISOLATED SPRINKLE OR TWO WILL BE POSSIBLE ALONG THE COAST THIS EVENING BUT THE BEST CHANCE FOR A MORE SUBSTANTIAL ISOLATED TO WIDELY SCATTERED RAIN SHOWER WILL BE LATE TONIGHT AS A COASTAL TROUGH SHIFTS TO THE COAST WITH SOME INCREASING CONVERGENCE ALONG THE COAST. MIN TEMPS TONIGHT WILL RANGE FROM THE UPPER 60S INLAND TO THE LOW TO MID 70S COAST.
920 PM EDT THU MAY 14 2015 HIGH PRESSURE WILL DRIFT OFF THE MID ATLANTIC COAST BY EARLY FRIDAY. A WARM FRONT WILL LIFT NORTHEAST INTO THE REGION FRIDAY AND FRIDAY NIGHT.
LAPSE RATES IN THE LOWEST 5000 FEET ARE NEARLY DRY ADIABATIC THIS EVENING. A FEW SHOWERS AND THUNDERSTORMS WERE ABLE TO FORM TODAY AND HAVE BEEN FOLLOWING THE LOW-LEVEL WIND FLOW MOVING TO THE NORTH-NORTHWEST.
1118 PM EDT THU MAY 14 2015 HIGH PRESSURE WILL BUILD SOUTH OF THE REGION TODAY THROUGH FRIDAY.
726 PM EDT THU MAY 14 2015 HIGH PRESSURE OVER THE EASTERN GREAT LAKES WILL MOVE EAST OFF THE MID ATLANTIC COAST FRIDAY AS A WARM FRONT MOVES NORTHEAST ACROSS THE REGION. FAIR WEATHER IS EXPECTED FOR THE FIRST HALF OF TONIGHT AS HIGH PRESSURE SLOWLY SHIFTS EAST. THE WARM FRONT WILL APPROACH THE REGION TOWARD MORNING AND SOME SHOWERS MAY SPREAD INTO THE NORTHWEST BY MORNING. INCREASING CLOUDS AND WARM ADVECTION WILL HELP KEEP OVERNIGHT TEMPERATURES WARMER THAN LAST NIGHTS FROST LOWS. THIS FEATURE WILL SHIFT EAST TOWARD EVENING WITH THE HIGHEST POPS LINGERING IN THE EASTERN HALF OF THE FORECAST AREA.
INCREASING SOUTHWEST FLOW IN THE LOWER LEVELS AHEAD OF AN APPROACHING UPPER LOW WILL RESULT IN STRONGER WINDS FRIDAY.
CHATTANOOGA AIRPORT, TN 66 81 65 81 / 20 40 40 60 KNOXVILLE MCGHEE TYSON AIRPORT, TN 64 82 64 82 / 10 20 30 50 OAK RIDGE, TN 63 83 65 81 / 10 20 30 60 TRI CITIES AIRPORT, TN 58 81 61 80 / 10 20 20 50.
738 PM EDT THU MAY 14 2015 HIGH PRESSURE OVER THE REGION WILL SLIDE TO THE EAST COAST BY MORNING AND BRING A MODERATING FLOW ON FRIDAY.
712 PM EDT THU MAY 14 2015 HIGH PRESSURE OVER WESTERN NEW YORK TODAY. A WARM FRONT APPROACHING FROM THE SOUTHWEST WILL BRING AN INCREASE IN CLOUDS ON FRIDAY AND A CHANCE OF SHOWERS FRIDAY NIGHT.
411 PM PDT Thu May 14 2015 Continued Cooler than normal conditions with an unsettled pattern as an upper low develops along the coast.
1038 PM EDT THU MAY 14 2015 HIGH PRESSURE WILL DRIFT OFF THE MID ATLANTIC COAST BY EARLY FRIDAY. A WARM FRONT WILL LIFT NORTHEAST INTO THE REGION FRIDAY AND FRIDAY NIGHT.
925 PM EDT THU MAY 14 2015 HIGH PRESSURE WILL SLIDE OFFSHORE TO THE SOUTH OF NEW ENGLAND TONIGHT.
BUT OVERALL CEILINGS SHOULD REMAIN IN THE LOWER END OF THE VFR RANGE WITH VCSH AT BOTH HSV AND MSL THROUGH THE END OF THE FORECAST PERIOD.
605 PM MDT THU MAY 14 2015 UPPER LOW OFF THE CA COAST WILL SWING INLAND OVER SRN CA TONIGHT AND FRIDAY THEN LIFT NORTHEAST ACROSS COLORADO INTO NE BY SAT NIGHT.
TEMPERATURES ALONG THE ISLAND CHAIN ARE IN THE LOWER 80S. MODERATE TO FRESH EASTERLY BREEZES WILL CONTINUE ACROSS THE LOCAL AREA AS HIGH PRESSURE SETTLES OFF THE MID ATLANTIC COAST TONIGHT.
TEMPERATURES ALONG THE ISLAND CHAIN ARE IN THE LOWER 80S.
924 PM PDT Thu May 14 2015 Continued Cooler than normal conditions with an unsettled pattern.
856 PM EDT THU MAY 14 2015 HIGH PRESSURE IMPACTS THE MID ATLANTIC THROUGH FRIDAY. A WARM FRONT WILL CROSS THE REGION LATE FRIDAY. HIGH PRESSURE WILL REMAIN OVER THE ATLANTIC OCEAN FOR THE WEEKEND.
833 PM EDT THU MAY 14 2015 HIGH PRESSURE OVER THE REGION WILL SLIDE TO THE EAST COAST BY MORNING AND BRING A MODERATING FLOW ON FRIDAY.
1040 PM EDT THU MAY 14 2015 HIGH PRESSURE WILL SLIDE OFFSHORE TO THE SOUTH OF NEW ENGLAND TONIGHT.
954 PM EDT THU MAY 14 2015 A RIDGE OF HIGH PRESSURE WILL CREST ACROSS THE REGION OVERNIGHT WITH MAINLY CLEAR SKIES THROUGH FRIDAY MORNING. A WARM FRONT APPROACHING FROM THE SOUTHWEST WILL BRING AN INCREASE IN CLOUDS FRIDAY AFTERNOON AND A CHANCE OF SHOWERS FRIDAY NIGHT.
Short range models indicate a westerly flow aloft prevailing across the Western High Plains today as weak upper level ridging exits eastward out of the Central Plains. Along with a relatively weak flow aloft combined with a fairly dry air mass across the high plains, dry conditions will persist across western Kansas through late Monday night. A prevailing low level southerly flow will continue to draw slightly warmer air northward into western Kansas today. Even warmer temperatures can be expected Tuesday as surface pressures fall in the lee of the Rockies, along with south winds.
1044 PM MST SUN NOV 8 2015 A BROAD TROUGH OF LOW PRESSURE WILL SLOWLY DROP INTO THE GREAT BASIN BY TUESDAY MORNING. EXPECT BREEZY-WINDY CONDITIONS TO DEVELOP OVER THE HIGHER TERRAIN ON MONDAY WITH BREEZY CONDITIONS DEVELOPING OVER LOWER ELEVATIONS BY MONDAY AFTERNOON. BREEZY TO WINDY CONDITIONS WILL CONTINUE OVER THE HIGHER TERRAIN ON MONDAY NIGHT WITH SCATTERED SHOWERS DEVELOPING OVER NORTHEASTERN UTAH BY EARLY TUESDAY.
THIS TREND IS EXPECTED TO CONTINUE INTO TOMORROW MORNING AS THE UPPER LOW LIFTS ACROSS THE REGION. MAIN LIFT WITH THE UPPER LOW IS ALONG THE GULF COAST AND WILL LIFT NORTHEAST.
Approaching upper level trof enhanced a moderate-heavy rainfall band along the frontal boundary this evening in Stanislaus Co. Snowfall amounts look to be between 4 to 7 inches below pass levels down to around 5000 feet with to up to 10 inches over the higher elevations through tonight. Cooler temperatures will settle in over the region for the next several days.
111 AM EST MON NOV 9 2015 DRY CONDITIONS WILL HOLD ON THROUGH MOST IF NOT ALL OF MONDAY BEFORE LOW PRESSURE MOVES TOWARDS THE REGION.
UPPER RIDGE IN PLACE ACROSS THE SOUTHERN ROCKIES OVERNIGHT WILL MOVE EASTWARD MON. UPPER LOW DEEPENS. WHERE READINGS WILL LIKELY STAY A FEW DEGF ABOVE FREEZING. WESTERN UPPER LOW BEGINS TO DROP SOUTHEASTWARD TOWARD THE GREAT BASIN. MAX TEMPS MON NEAR TO JUST A COUPLE DEGF COOLER THAN TODAY. AS 700 MB THERMAL RIDGE SLIDES EASTWARD INTO THE CENTRAL PLAINS BY AFTERNOON.
A WEAK COLD FRONT IS EXPECTED TO SLIDE INTO NORTH DAKOTA THIS MORNING. WITH SLIGHTLY COOLER TEMPERATURES AS THE RIDGE IS FURTHER EAST OF NORTH DAKOTA AND SOUTHEAST SURFACE WINDS PRODUCE AN UPSLOPE WIND FIELD.
244 AM EST MON NOV 9 2015 HIGH PRESSURE WILL BUILD TO OUR SOUTH AND SLIDE OFFSHORE BY AFTERNOON. THE RETURN FLOW AROUND THE HIGH WILL TRANSPORT WARMER AIR INTO THE REGION BEGINNING TODAY. THE HIGH WILL SHIFT WELL OFFSHORE ON TUESDAY. LOW PRESSURE IS THEN FORECAST TO FORM OFF THE CAROLINAS TUESDAY.
431 AM EST MON NOV 9 2015 LATEST WV IMAGERY AND RAP ANALYSIS INDICATED A BROAD MID/UPPER LEVEL RIDGE FROM THE NRN PLAINS INTO THE GREAT LAKES. A SW FLOW CONTINUED OVER THE AREA BETWEEN HIGH PRES CENTERED OVER THE MID- ATLANTIC COAST AND A TROUGH INTO THE WRN PLAINS.
LEE TROUGHING HAS STRENGTHENED OVER EASTERN CO/EASTERN NM WITH HIGH PRESSURE OVER THE OHIO VALLEY. RETURN FLOW WILL CONTINUE TO STRENGTHEN INTO TUE AS A DEEP TROUGH DIGS OVER CA AND EVENTUALLY INTO THE DESERT SW. MODELS HAVE SLOWED DOWN THIS TROUGH SLIGHTLY COMPARED TO YESTERDAYS RUNS WITH THE DRYLINE SURGING THROUGH THE FORECAST AREA WED MORNING. THE BIGGER STORY WITH THIS POWERFUL LOW WILL BE STRONG NORTHWEST WINDS WED AFTERNOON/EVENING AS THE LOW LIFT OFF TO THE NORTHEAST. UPPER RIDGING OVER THE ROCKIES WILL FOLLOW BEHIND THIS WAVE SETTING UP DRY CONDITIONS AND ABOVE NORMAL TEMPS FOR THE WEEKEND. WITH THE LEE SIDE SURFACE TROF GRADUALLY DEEPENING OVER THE HIGH PLAINS WHICH WILL RESULT IN A TIGHTER GRADIENT AND INCREASING SOUTHERLY WIND FLOW ACROSS THE AREA.
246 AM MST MON NOV 9 2015 A TEMPORARY COOLDOWN IS IN STORE STARTING TUESDAY AS A LOW PRESSURE SYSTEM WILL SWEEP THROUGH THE FOUR CORNERS AREA BRINGING INCREASED CLOUD COVER.
WAVES OF RAIN CONTINUE TO CROSS THE REGION AS LOW PRESSURE MOVES ACROSS THE NORTH-CENTRAL GULF OF MEXICO. THE LOW WILL CONTINUE TO MOVE E/NE TODAY/TNGT. WITH THE WARM FRONT MOVING NORTH INTO SE GA THIS AFTN. AND THE SYSTEMS COLD FRONT MOVING BACK SOUTH ACROSS THE AREA TNGT INTO TUESDAY.
241 AM MST MON NOV 9 2015 UPPER TROF CURRENTLY DIGGING SOUTHWARD ALONG THE WEST COAST WHILE SOME HIGH CLOUDS IMPINGING OVER THE NW PART OF THE CWA IN SWLY FLOW ALOFT. CONTINUED FAIRLY QUIET TONIGHT INTO TUESDAY THEN CHANGES ENSUE DURING THE DAY TUESDAY AS THE UPPER TROF MOVES EASTWARD OVER THE WESTERN CONUS WITH SOME SHOWER POSSIBLY SPREADING INTO FAR WESTERN PARTS OF THE CWA TUESDAY AFTERNOON. MAIN ACTION FOR THE CWA FROM THIS SYSTEM WILL BE TUESDAY NIGHT AS IT ACCELERATES EASTWARD ACROSS THE CENTRAL ROCKYS WHILE CLOSING OFF AN UPPER LOW OVER COLORADO. THIS WILL CONTINUE INTO EARLY WEDS MORNING BEFORE ENDING AS THE SFC/UPPER LOWS MOVE EAST AWAY FROM THE AREA.
WILL MAINTAIN THE HIGH MORNING POPS AND BEGIN TO TAPER THINGS OFF AS WE GET INTO LATE AFTERNOON AND EARLY EVENING HOURS. WITH THE HIGHEST TOTALS EXPECTED TO BE EAST OF I-65 AND MAINLY ON THE CUMBERLAND PLATEAU. THIS SYSTEM WILL PULL OUT OF THE REGION TONIGHT AND HIGH PRESSURE WILL TAKE OVER.
354 AM CST MON NOV 9 2015 RETURN FLOW WILL BEGIN TO INCREASE TODAY AS LARGE UPPER TROUGH MOVES OVER WESTERN UNITED STATES.
THE FORECAST AREA IS POSITIONED BETWEEN A DEPARTING HIGH PRESSURE OVER NEW ENGLAND AND A TROUGH DEVELOPING ACROSS THE WESTERN CONUS. LOW PRESSURE WILL TRACK ACROSS THE SOUTHERN CONUS AND LIFT INTO THE OHIO RIVER VALLEY LATE MONDAY INTO TUESDAY. A TROUGH CONTINUES TO DIG INTO THE SOUTHWEST CONUS WITH A TIGHTENING PRESSURE GRADIENT ACROSS THE FORECAST AREA.
333 AM CST MON NOV 9 2015 VERY LIGHT RAIN SHOWERS ASSOCIATED WITH A LOW PRESSURE SYSTEM CURRENTLY ROTATING ACROSS THE CENTRAL PLAINS WILL DAMPEN A FEW LOCATIONS THROUGH SUNRISE. ALL PRECIPITATION SHOULD END LATER THIS MORNING AS THE UPPER LOW MOVES TO THE NORTHEAST. ZONAL FLOW ALOFT WILL BRIEFLY ESTABLISH ITSELF ACROSS THE SOUTHERN HALF OF THE NATION TONIGHT THROUGH TUESDAY AHEAD OF THE NEXT LOW PRESSURE SYSTEM.