Area Forecast Discussion
Issued by NWS Wakefield, VA

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000 FXUS61 KAKQ 160141 AFDAKQ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WAKEFIELD VA 941 PM EDT MON SEP 15 2014 .SYNOPSIS... A COLD FRONT WILL APPROACH FROM THE NORTHWEST OVERNIGHT...BEFORE CROSSING THE MID ATLANTIC COAST TUESDAY MORNING. HIGH PRESSURE BUILDS NORTH OF THE REGION TUESDAY NIGHT THROUGH THURSDAY AS LOW PRESSURE LINGERS ALONG THE SOUTHEAST COAST. && .NEAR TERM /UNTIL 6 AM TUESDAY MORNING/... MID-EVENING IR/WV SAT IMAGERY SHOWING A DAMPENING MID LEVEL SHORTWAVE TROUGH TRACKING ACROSS THE EASTERN GREAT LAKES INTO THE NORTHEAST. TO THE SOUTH, ANOTHER WEAK SHORTWAVE ALOFT WAS NOTED PUSHING ACROSS THE EASTERN TN VALLEY TOWARDS THE WESTERN CAROLINAS. AT THE SURFACE, WEAKENING SFC HIGH PRESSURE REMAINS IN PLACE ACROSS THE MID-ATLANTIC COAST THIS EVENING, AS THE SFC COLD FRONT WAS ANALYZED JUST EAST OF KSTL AT 00Z...TRAILING BACK SOUTHWEST TOWARDS THE SOUTHERN HIGH PLAINS. HAVE CONTINUED A SLIGHT CHC TO LOW CHC POP FOR SOME LGT SHRAS/SPRINKLES AFTER MIDNIGHT TONIGHT AS THE SHORTWAVE TROUGH RACES INTO NEW ENGLAND OVERNIGHT. THE TRAILING COLD FRONT IS EXPECTED TO ENTER THE NW PORTION OF THE AREA LATE TONIGHT...AND REACH THE ERN SHORE AFTER SUNRISE. THE PRIMARY LIFT ASSOCIATED WITH THE TROUGH WILL REMAIN WELL N OF THE LOCAL AREA. GIVEN THIS...FORECAST POPS FOR MOST OF THE AREA WILL BE NO HIGHER THAN 20% (BEGINNING AFTER MIDNIGHT). THE ONE EXCEPTION WILL BE THE ERN SHORE...WHERE 30% POPS WL BE FORECAST (MAINLY LATE...BETWEEN 09-12Z) AS A WEAK LOW-LEVEL THETA-E RIDGE INTERACTS WITH THE TROUGH PASSING TO THE N. LOW TEMPERATURES ARE EXPECTED TO RANGE FROM THE UPPER 50S N...TO THE LOW/MID 60S SE. SKY CONDITION WILL AVERAGE OUT MOSTLY CLOUDY EARLY...CLEARING LATE ACROSS THE WEST BEHIND THE DEPARTING DISTURBANCE. && .SHORT TERM /6 AM TUESDAY MORNING THROUGH THURSDAY/... LOW-LEVEL DRYING IN A NW WIND IS EXPECTED BEHIND THE FRONT TUESDAY...WITH THE EXCEPTION OF COASTAL SE VA/NE NC WHERE THE TAIL END OF THE TROUGH WILL BE SLOW TO EXIT THE COAST...AND THE WIND WILL SHIFT TO NE. 20-30% POPS WILL BE MAINTAINED TO ACCOUNT FOR THIS. OTHERWISE...EXPECT PARTIAL CLEARING WITH HIGH TEMPERATURES RANGING FROM THE UPPER 70S ACROSS THE FAR NRN COUNTIES/ATLANTIC COAST...TO THE LOW/MID 80S OVER INTERIOR S-CENTRAL VA/NE NC. HIGH PRESSURE PRESENTLY OVER THE NRN PLAINS WILL BUILD N OF THE REGION TUESDAY NIGHT THROUGH WEDNESDAY. ANOTHER HIGH N OF THE GREAT LAKES THEN BUILDS TOWARD THE REGION WEDNESDAY NIGHT INTO THURSDAY. MEANWHILE...LOW PRESSURE WILL LINGER IN VICINITY OF THE SOUTHEAST COAST. THIS PATTERN WILL MAINTAIN PERSISTENT NE FLOW AND RESULT IN MOSTLY CLOUDY TO OVERCAST CONDITIONS OVER SRN PORTIONS...WITH PARTLY TO MOSTLY CLOUDY CONDITIONS OVER NRN PORTIONS. NOT MUCH FORCING IS EXPECTED TUESDAY NIGHT THROUGH TUESDAY...SO WIDESPREAD SHRA ARE UNLIKELY. HOWEVER...A 20% POP WILL BE FORECAST OVER FAR SRN/SE VA AND NE NC TO ACCOUNT FOR ANY SHRA CREEPING N FOR ERN NC. HIGHS SHOULD GENERALLY RANGE THROUGH 70S WEDNESDAY AND THURSDAY. LOWS WEDNESDAY MORNING SHOULD RANGE FROM THE MID 50 N...TO LOW 60S SE...WITH LOW/MID 50S N LOW 60S SE THURSDAY MORNING. && .LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... LARGE AREA OF HI PRES WILL BLD ACRS SE CANADA AND OFF THE NEW ENGLAND CST THU NGT THRU SAT...WITH A WEAKER PIECE OF THE HI REMAINING OVR THE MID ATLC STATES SAT NGT THRU SUN. A PERIOD OF ONSHR/NE-E WINDS EXPECTED FM THU NGT INTO SAT...WITH MAINLY DRY AND AUTUMN-LIKE CONDITIONS. FLO WILL TURN TO THE SE THEN S FOR LATE SAT INTO SUN MORNG...THEN SSW SUN AFTN INTO MON MORNG IN ADVANCE OF A COLD FRONT. MAINLY DRY WX CONTINUES SAT NGT THRU SUN NGT...BEFORE THE COLD FRONT MOVES INTO THE AREA AND BRINGS AT LEAST A SLGT CHC OF SHOWERS ON MON. MIN TEMPS WILL RANGE THRU THE 50S INTO THE LWR 60S FRI AND SAT MORNGS...RANGE FM THE MID 50S TO MID 60S SUN MORNG...AND RANGE THRU THE 60S MON MORNG. MAX TEMPS WILL BE IN THE LWR TO MID 70S FRI...IN THE MID TO UPR 70S SAT...AND RANGE FM THE MID 70S TO LWR 80S SUN AND MON. && .AVIATION /02Z TUESDAY THROUGH SATURDAY/...
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WINDS HAVE TURNED TO THE SOUTH AS SURFACE HIGH PRESSURE HAS MOVED OFF THE COAST. A WEAK COLD FRONT CROSSES THE AREA TUESDAY MORNING. EXPECT MVFR CEILINGS AHEAD OF THE FRONT AS MOISTURE INCREASES. BRIEF PERIODS OF VIS RESTRICTIONS MAY BE POSSIBLE WITH ANY PASSING SHOWERS BUT CONFIDENCE IS NOT HIGH ENOUGH TO INCLUDE WX IN TAF FORECAST. VFR CONDITIONS EXPECTED LATE TUE MORNING THROUGH THE REMAINDER OF THE 00Z TAF PERIOD AS HIGH PRESSURE BUILDS IN FROM THE WEST. OUTLOOK...NE FLOW RETURNS AND CLOUDY CONDITIONS WITH SCATTERED SHOWERS ARE POSSIBLE ACROSS NE NC ON WED IN THE VICINITY OF THE FRONT AS IT SLOWLY PUSHES SOUTH.
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&& .MARINE... NO HEADLINES WITH THIS FCST PACKAGE. HI PRES WILL SLIDE OFF THE NRN MID ATLC CST THIS EVENG. A COLD FRONT WILL CROSS THE MID ATLC REGION LATE TNGT THRU TUE MORNG. NE THRU SE WINDS LESS THAN 10 KT THIS EVENG...WILL SHIFT TO THE SW OR W TUE MORNG...THEN SHIFT TO THE NW OR N 10 TO 15 KT FOR LATER TUE MORNG/TUE AFTN. AN EXTENDED PERIOD OF NE OR E FLO WILL THEN DOMINATE THE WTRS FOR TUE NGT INTO SAT...AS HI PRES BLDS BY TO THE N OF THE AREA AND OFF THE NEW ENGLAND CST. SEAS WILL APPROACH AND MAY EXCEED 5 FT DURING THIS TIME PERIOD. && .AKQ WATCHES/WARNINGS/ADVISORIES... MD...NONE. NC...NONE. VA...NONE. MARINE...NONE. && $$ SYNOPSIS...AJZ/ALB NEAR TERM...AJZ/MAM SHORT TERM...AJZ/ALB LONG TERM...TMG AVIATION...DAP MARINE...TMG

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