858
FXUS61 KAKQ 291554
AFDAKQ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WAKEFIELD VA
1154 AM EDT TUE APR 29 2025
SYNOPSIS
VERY WARM TEMPERATURES ARE EXPECTED ACROSS MUCH OF THE AREA FROM
TODAY THROUGH FRIDAY. AN UNSETTLED PATTERN DEVELOPS FROM MID TO
LATE WEEK WITH ISOLATED TO SCATTERED SHOWERS AND STORMS
POSSIBLE EACH DAY FROM WEDNESDAY THROUGH SATURDAY. THE FORECAST
IS HIGHLY UNCERTAIN LATER IN THE WEEKEND INTO NEXT WEEK DUE TO
A POTENTIAL CUTOFF LOW.
NEAR TERM /THROUGH TONIGHT/
AS OF 1145 AM EDT TUESDAY...
KEY MESSAGE:
- WARMING TEMPERATURES AND CONTINUED DRY CONDITIONS ARE EXPECTED
TODAY.
THE LATEST WX ANALYSIS INDICATES ~1028MB SFC HIGH PRESSURE
CENTERED OFF THE NC COAST EARLY THIS MORNING WITH STRONG
(<1000MB) SFC LOW PRESSURE TRACKING INTO QUEBEC. ALOFT, AN
UPPER LEVEL RIDGE AXIS IS ALIGNED ALONG THE APPALACHIANS. THE
SKY IS MAINLY CLEAR, AND WITH LOW- LEVEL FLOW NOW FROM THE SW,
TEMPERATURES HAVE RISEN WELL INTO THE 70S ACROSS THE REGION.
WITH AMPLE MIXING THROUGH AFTN, EXPECT FREQUENT GUSTS OF 20-25
WITH HIGHS INTO THE LOW-MID 80S MOST AREAS, WITH UPPER 70S
ACROSS PARTS OF THE EASTERN SHORE. DEW PTS HAVE RISEN A BIT
OVER THE PAST FEW HRS, BUT WILL LIKELY MIX OUT A FEW DEGREES BY
MID- LATER AFTN, SO MIN AFTERNOON RH VALUES WILL GENERALLY
RANGE AT 30-35%. CONVECTION IS ONGOING ACROSS PORTIONS OF THE
MS/OH VALLEY, AND WILL CONTINUE TRACKING CLOSER TO THE LOCAL
AREA, BUT SHOULD WEAKEN UPON APPROACHING AREAS E OF THE
APPALACHIANS TONIGHT DUE TO THE LOWER DEW PTS AND RESULTANT
LACK OF INSTABILITY EAST OF THE MOUNTAINS. ALSO, A BACKDOOR COLD
FRONT WILL BEGIN TO APPROACH FROM THE NORTH TONIGHT. THE LATEST
12Z/29 GUIDANCE HAS STILL NOT FULLY ARRIVED (GFS), BUT CONTINUES
TO SUGGEST THAT THE SOUTHWARD MOVEMENT OF THE FRONT WILL REMAIN
JUST NORTH OF THE CWA THROUGH ~12Z WED MORNING. MILDER TONIGHT
WITH A SSW BREEZE, LEADING TO OVERNIGHT LOWS IN THE LOWER- MID
60S IN MOST AREAS.
SHORT TERM /WEDNESDAY THROUGH THURSDAY/
AS OF 300 AM EDT TUESDAY...
KEY MESSAGES:
- VERY WARM ON WEDNESDAY WITH MID TO UPPER 80S EXPECTED.
- SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED WEDNESDAY AFTERNOON
AND EVENING, WITH THE BEST CHANCES ALONG AND SOUTH OF I- 64.
ORGANIZED SEVERE WEATHER IS NOT EXPECTED, BUT A FEW STRONGER
STORMS REMAIN POSSIBLE WITH GUSTY WINDS AS THE MAIN THREAT.
- SHOWERS AND STORMS ARE POSSIBLE ACROSS MAINLY N/NW PORTIONS OF
THE AREA THURSDAY AFTERNOON AND EVENING WITH CONTINUED WARM
WEATHER.
THE RIDGE ALOFT BECOMES SUPPRESSED TO OUR SE ON WED/THU. MEANWHILE,
THE BACKDOOR COLD FRONT MAY CROSS PART OF THE AREA (MOST LIKELY THE
EASTERN SHORE) DURING THE DAY ON WED. VERY WARM WX IS EXPECTED
ACROSS MUCH OF THE AREA WITH WIDESPREAD MID TO UPPER 80S IN MOST OF
OUR VA/NC ZONES (W/ UPPER 70S-LOWER 80S ON THE EASTERN SHORE). THE
MAIN FORECAST CHALLENGE ON WED IS TIMING AND ESPECIALLY PLACEMENT OF
AFTN/EVENING CONVECTION. WILL HAVE TO WATCH ANY RESIDUAL BOUNDARIES
FROM DISSIPATING TSTMS, AS THESE COULD CONTRIBUTE TO CONVECTIVE
INITIATION OVER THE LOCAL AREA WED AFTN. ALSO, THE WEAK BACKDOOR
FRONT COULD BE A FOCUS FOR SCATTERED CONVECTION AS WELL. WHILE THE
FORECAST REMAINS UNCERTAIN, STILL FEEL THAT THE BEST CHC FOR TSTMS
WED AFTN/EVENING IS ALONG AND ESPECIALLY SOUTH OF I-64. PRECIP
CHANCES ARE QUITE LOW ACROSS NORTH/NORTHEAST PORTIONS OF THE FA.
WITH DEW PTS RISING INTO THE LOWER 60S BY THE AFTN/EVENING, MODERATE
SURFACE-BASED INSTABILITY (1000-1500 J/KG OF MLCAPE) WILL DEVELOP.
WHILE ORGANIZED SEVERE WX IS NOT EXPECTED DUE TO WEAK DEEP-LAYER
SHEAR, A FEW STORMS MAY PRODUCE 45-50 MPH GUSTS WHICH COULD CAUSE
LOCALIZED TREE DAMAGE. MAINLY DRY WX IS EXPECTED AFTER MIDNIGHT WED
NIGHT WITH LOWS IN THE LOWER 60S IN MOST AREAS (MID-UPPER 50S ON THE
EASTERN SHORE WITH WEAK ONSHORE FLOW). THE BACKDOOR FRONT QUICKLY
RETREATS NORTHWARD ON THU AS LOW PRESSURE BEGINS TO DEEPEN AS IT
TRACKS FROM THE PLAINS TO SOUTHERN GREAT LAKES. WITH THE RETREATING
FRONT AND STRONG LOW STILL WELL TO OUR NW, THE BEST FORCING FOR
ASCENT WILL BE OFF TO THE NORTH/NORTHWEST. HOWEVER, ADDITIONAL
ISOLATED TO SCATTERED SHOWERS AND STORMS WILL BE POSSIBLE THU AFTN
INTO THE EVENING, MAINLY ACROSS N/NW PORTIONS OF THE FA. VERY WARM
INLAND W/ HIGHS WELL INTO THE 80S ON THU. 70S ARE EXPECTED ON THE
EASTERN SHORE WITH THE FLOW REMAINING ONSHORE FOR MOST OF THE DAY.
LONG TERM /THURSDAY NIGHT THROUGH MONDAY/
AS OF 300 AM EDT TUESDAY...
KEY MESSAGES:
- HIGHS WILL BE WELL INTO THE 80S ON FRIDAY, WITH CONTINUED
SHOWER/STORM CHANCES.
- SHOWER/STORM CHANCES CONTINUE ON SATURDAY AS A COLD FRONT CROSSES
THE AREA.
- THE FORECAST FOR LATE NEXT WEEKEND INTO EARLY NEXT WEEK IS
HIGHLY UNCERTAIN GIVEN VARYING MODEL SOLUTIONS WITH RESPECT
TO A POTENTIAL CUTOFF LOW.
THE ABOVE MENTIONED LOW PRESSURE SYSTEM WILL CONTINUE TO DEEPEN AS
IT TRACKS NE THROUGH THE END OF THE WEEK, REACHING QUEBEC BY FRIDAY
NIGHT. THIS FEATURE EVENTUALLY DRAGS A SEASONALLY STRONG COLD FRONT
TOWARD THE AREA, WITH THAT COLD FRONT EXPECTED TO CROSS THE AREA ON
SATURDAY. THE ASSOCIATED SHORTWAVE TROUGH ALOFT APPROACHES THE LOCAL
AREA ON FRIDAY, BEFORE IT TRACKS OVER THE AREA THIS WEEKEND. THERE
ARE SIGNIFICANT MODEL AND ENSEMBLE DIFFERENCES WITH RESPECT TO THE
EVOLUTION OF THAT SHORTWAVE. THE ECMWF/CMC ARE FORECASTING IT TO
BECOME A CLOSED UPPER LOW BY SUNDAY AND MEANDER OVER THE MID-
ATLANTIC THROUGH AT LEAST EARLY NEXT WEEK. SOME OF THE EPS/CMCE
MEMBERS SHOW THIS AS WELL. ON THE OTHER HAND, THE GFS AND MOST OF
ITS ENSEMBLE MEMBERS ARE MUCH MORE PROGRESSIVE AND SHOW THE
SHORTWAVE MOVING OFFSHORE WITH STRONG UPPER RIDGING BUILDING OVER
THE AREA EARLY NEXT WEEK.
HAVE HIGHER CONFIDENCE IN THE FORECAST FOR FRI/SAT WITH VERY LOW
CONFIDENCE FROM SUN-TUE. VERY WARM ONCE AGAIN ON FRIDAY WITH
WIDESPREAD MID 80S INLAND. SCATTERED SHOWERS AND TSTMS INITIALLY
DEVELOP TO OUR WEST FRIDAY AFTERNOON (WELL AHEAD OF THE FRONT)
BEFORE TRACKING ACROSS THE AREA FRIDAY NIGHT INTO SATURDAY AS THE
FRONT CROSSES THE AREA. THE HIGHEST PRECIP CHANCES ARE INLAND ON FRI
AND SHIFT TO AREAS EAST OF I-95 BY SATURDAY AFTN AS THE FRONT
CROSSES THE AREA. A FEW STRONG TO SEVERE STORMS ARE POSSIBLE FRIDAY
AFTN/EVENING INTO THE FIRST PART OF FRIDAY NIGHT, WITH MODEST (~30
KT) DEEP LAYER SHEAR PRESENT ALONG WITH A DECENT AMOUNT OF
INSTABILITY. THE MAIN THREAT WILL LIKELY BE LOCALLY DAMAGING WINDS.
CAN'T COMPLETELY RULE OUT A STRONGER STORM OR TWO NEAR THE COAST ON
SATURDAY AS WELL, ALTHOUGH HIGHS DROP BACK INTO THE 70S WITH MORE
CLOUD COVER AND PRECIP.
THE FORECAST FOR LATE THIS WEEKEND INTO EARLY NEXT WEEK DEPENDS ON
THE EVOLUTION OF THAT SHORTWAVE. IF IT REMAINS PROGRESSIVE LIKE THE
GFS/GEFS SHOWS, DRY AND LESS HUMID WX PREVAILS SUNDAY-TUESDAY. IF A
CLOSED LOW DOES FORM, CLOUDS AND PRECIP CHANCES WILL CONTINUE
THROUGH EARLY NEXT WEEK. FOR NOW, NBM GUIDANCE ONLY HAS SLIGHT
CHANCE POPS NEAR THE COAST FROM SUN-TUE AM BUT THE EPS/CMCE ENSEMBLE
MEANS HAVE AREAL AVG QPFS OF ~0.50" FROM SUN-TUE.
AVIATION /16Z TUESDAY THROUGH SATURDAY/
AS OF 625 AM EDT TUESDAY...
VFR CONDITIONS WILL PREVAIL AT ALL TERMINALS THROUGH THE 12Z/29
TAF PERIOD. S WINDS OF 5-10 KT EARLY THIS MORNING WILL BECOME
SSW AND INCREASE TO 10-15 KT (W/ GUSTS OF 20-25 KT) TODAY.
CONVECTION DEVELOPS WELL TO OUR WEST (WEST OF THE APPALACHIANS)
THIS AFTERNOON/EVENING BUT WEAKENS TONIGHT BEFORE REACHING THE
TERMINALS. MAINLY CLEAR SKIES OUTSIDE OF HIGH CLOUDS/FEW AFTN
CUMULUS EXPECTED THROUGH THE PERIOD. DID ADD LLWS TO SBY FOR A
FEW HOURS TONIGHT AS A 40-50 KT SOUTHWESTERLY LLJ DEVELOPS OVER
THE EASTERN SHORE.
OUTLOOK: VFR CONDITIONS ARE EXPECTED TO PREVAIL THROUGH
WEDNESDAY MORNING. A COLD FRONT APPROACHES FROM THE NORTH BY
LATER WEDNESDAY INTO THURSDAY BRINGING AN INCREASED CHANCE OF
SHOWERS AND STORMS. A STRONGER FRONT CROSSES THE REGION LATE
FRIDAY INTO SATURDAY, BRINGING A BETTER CHANCE FOR WIDESPREAD
SHOWERS AND STORMS FRIDAY AFTERNOON INTO SATURDAY MORNING.
MARINE
AS OF 300 AM EDT TUESDAY...
KEY MESSAGES:
- SMALL CRAFT ADVISORIES ARE IN EFFECT FOR THE CHESAPEAKE BAY, COASTAL
WATERS NORTH OF THE VA/NC BORDER, AND UPPER RIVERS FROM LATE
THIS AFTERNOON THROUGH EARLY WEDNESDAY MORNING.
- QUIETER MARINE CONDITIONS WEDNESDAY AND THURSDAY, OUTSIDE OF
SCATTERED AFTERNOON AND EVENING THUNDERSTORMS.
- SMALL CRAFT ADVISORIES AGAIN POSSIBLE AT THE END OF THE WEEK.
EARLY MORNING SURFACE ANALYSIS DEPICTED HIGH PRESSURE ACROSS THE
LOCAL WATERS WITH S WINDS ~10 KT S AND 10-15 KT N. HIGH PRESSURE
CONTINUES TO GRADUALLY MOVE OFFSHORE TODAY, ALLOWING FOR WINDS TO
GRADUALLY INCREASE TO 10-15 KT WITH GUSTS UP TO 20 KT BY EARLY THIS
AFTERNOON, EVENTUALLY INCREASING TO 15-20 KT WITH GUSTS UP TO 25 KT
BY LATE THIS AFTERNOON INTO THIS EVENING. WINDS BECOME SW TONIGHT,
INCREASING BRIEFLY TO 20-25 KT WITH GUSTS UP TO 30 KT ACROSS THE N
COASTAL WATERS. WINDS DIMINISH QUICKLY WED MORNING AS A WEAK COLD
FRONT DROPS S. WIND PROBS FOR 18 KT SUSTAINED WINDS INCREASE TO 80-
100% ACROSS THE CHES BAY TONIGHT WITH WIND PROBS FOR 25 KT WIND
GUSTS ACROSS THE N COASTAL WATERS INCREASING TO 80-100% AS WELL.
MEANWHILE, WIND PROBS FOR 25 KT GUSTS WERE MUCH LOWER ACROSS THE NC
COASTAL WATERS (20-40%). THEREFORE, HAVE OPTED TO KEEP THEM OUT OF
THE SCAS. HOWEVER, HAVE ADDED THE VA COASTAL WATERS FROM CAPE
CHARLES LIGHT TO THE VA/NC BORDER TO THE SCAS GIVEN WIND PROBS OF 50-
80% FOR 25 KT GUSTS. SCAS ARE NOW IN EFFECT FROM 4 PM THIS EVENING
THROUGH 7 AM WED FOR THE MIDDLE AND UPPER BAY, 4 PM THIS EVENING
THROUGH 10 AM WED FOR THE LOWER BAY, 6 PM THIS EVENING UNTIL 4 AM
WED FOR THE COASTAL WATERS FROM THE VA/NC BORDER TO CAPE CHARLES
LIGHT, 6 PM THIS EVENING THROUGH 7 AM WED FOR THE COASTAL WATERS
NORTH OF CAPE CHARLES LIGHT, AND 10 PM THIS EVENING THROUGH 7 AM WED
FOR THE UPPER RIVERS.
WINDS REMAIN LIGHT FROM WED THROUGH THU OUTSIDE OF CONVECTION.
HOWEVER, SCATTERED AFTERNOON/EVENING SHOWERS AND STORMS ARE POSSIBLE
BOTH DAYS (LOWER CHANCE ON THU). AN AREA OF LOW PRESSURE TRACKS FROM
THE MIDWEST INTO SE CANADA THU INTO FRI, WITH AN ASSOCIATED COLD
FRONT APPROACHING THE LOCAL WATERS FRI NIGHT. S/SW WINDS INCREASE TO
15-20 KT WITH GUSTS UP TO 25 KT THU NIGHT INTO EARLY SAT MORNING IN
THE WARM SECTOR OF THE AFOREMENTIONED LOW PRESSURE SYSTEM. THE
COLD FRONT PUSHES ACROSS THE LOCAL WATERS SAT WITH WINDS
REMAINING ELEVATED BEHIND THE FRONT INTO SUN. AS SUCH, A
PROLONGED PERIOD OF LOW-END SCA CONDITIONS IS POSSIBLE FROM THU
NIGHT THROUGH SAT BOTH AHEAD OF AND BEHIND THE THE COLD FRONT.
WAVES AND SEAS WERE ~2 FT EARLY THIS MORNING. WAVES BUILD TO 3-4 FT
BY TONIGHT WITH SEAS BUILDING TO 4-6 FT ACROSS THE N COASTAL WATERS
AND 3-4 FT ACROSS THE S COASTAL WATERS. ANOTHER PERIOD OF ELEVATED
SEAS ARRIVES FRI AFTERNOON INTO FRI NIGHT.
AKQ WATCHES/WARNINGS/ADVISORIES
MD...NONE.
NC...NONE.
VA...NONE.
MARINE...SMALL CRAFT ADVISORY FROM 4 PM THIS AFTERNOON TO 7 AM EDT
WEDNESDAY FOR ANZ630-631.
SMALL CRAFT ADVISORY FROM 4 PM THIS AFTERNOON TO 10 AM EDT
WEDNESDAY FOR ANZ632-634.
SMALL CRAFT ADVISORY FROM 10 PM THIS EVENING TO 7 AM EDT
WEDNESDAY FOR ANZ635>638.
SMALL CRAFT ADVISORY FROM 6 PM THIS EVENING TO 7 AM EDT
WEDNESDAY FOR ANZ650-652-654.
SMALL CRAFT ADVISORY FROM 6 PM THIS EVENING TO 4 AM EDT
WEDNESDAY FOR ANZ656.
SYNOPSIS...LKB
NEAR TERM...ERI/LKB
SHORT TERM...ERI
LONG TERM...ERI/MAM
AVIATION...ERI
MARINE...RMM
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