Alert archive / New Jersey / Coastal Flood Watches in 2011
Coastal Flood Watch 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this coastal flood watch at Apr 15, 2011, 3:06 PM EDT for 10 counties in New Jersey; Kent County, New Castle County, Sussex County, Delaware; Delaware County, Philadelphia County, Pennsylvania. It took effect at Apr 16, 2011, 6:00 PM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Apr 15, 2011, 3:06 PM EDT (19:06 UTC)
- In effect from
- Apr 16, 2011, 6:00 PM EDT
- Expired
- Apr 16, 2011, 3:25 AM EDT
- In force
- Issued by
- NWS Philadelphia/Mount Holly
Counties Kent County, DE, New Castle County, DE, Sussex County, DE, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 58 km from the middle of the area, began a volume at 19:10 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.1 hours before the alert went out and 99 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1043 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
713 WHUS41 KPHI 151906 CFWPHI URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 306 PM EDT FRI APR 15 2011 DEZ002>004-NJZ012>014-020>027-161000- /O.NEW.KPHI.CF.A.0002.110416T2200Z-110417T0400Z/ KENT-INLAND SUSSEX-DELAWARE BEACHES-MIDDLESEX-WESTERN MONMOUTH- EASTERN MONMOUTH-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN- SOUTHEASTERN BURLINGTON- 306 PM EDT FRI APR 15 2011 ...COASTAL FLOOD WATCH IN EFFECT SATURDAY EVENING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A COASTAL FLOOD WATCH...WHICH IS IN EFFECT SATURDAY EVENING. * TIDES...MODERATE TIDAL FLOODING IS QUITE POSSIBLE AROUND THE SATURDAY EVENING HIGH TIDE. * AT SANDY HOOK, NEW JERSEY (RARITAN BAY), HIGH TIDE OCCURS AT 720 PM, WITH A FORECAST TIDE LEVEL OF 7.5 TO 8.0 FEET ABOVE MEAN LOWER LOW WATER. * AT SEASIDE HEIGHTS, NEW JERSEY (OCEANFRONT), HIGH TIDE OCCURS AT 650 PM, WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT ATLANTIC CITY, NEW JERSEY (OCEANFRONT), HIGH TIDE OCCURS AT 657 PM, WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT CAPE MAY, NEW JERSEY (OCEANFRONT), HIGH TIDE OCCURS AT 731 PM, WITH A FORECAST TIDE LEVEL OF 7.5 TO 8.0 FEET ABOVE MEAN LOWER LOW WATER. * AT BREAKWATER HARBOR, DELAWARE (DELAWARE BAY), HIGH TIDE OCCURS AT 809 PM, WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT REHOBOTH BEACH, DELAWARE (OCEANFRONT), HIGH TIDE OCCURS AT 710 PM, WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT REEDY POINT, DELAWARE (DELAWARE BAY), HIGH TIDE OCCURS AT 1041 PM, WITH A FORECAST TIDE LEVEL NEAR 8.5 FEET ABOVE MEAN LOWER LOW WATER. * HIGH TIDE OCCURS ON BACK BAYS AND TIDAL TRIBUTARIES LATER THAN IT DOES ALONG THE OCEANFRONT. * WAVES...WAVE HEIGHTS IN THE SURF ZONE ALONG THE OCEANFRONT MAY BE IN THE 5 TO 8 FOOT RANGE. * IMPACTS...NUMEROUS ROADWAYS MAY FLOOD. SOME DAMAGE TO PROPERTY AND MODERATE BEACH EROSION ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD WATCH MEANS THAT CONDITIONS FAVORABLE FOR FLOODING ARE EXPECTED TO DEVELOP. COASTAL RESIDENTS SHOULD BE ALERT FOR LATER STATEMENTS OR WARNINGS...AND TAKE ACTION TO PROTECT PROPERTY. && $$ DEZ001-NJZ016>019-PAZ070-071-161000- /O.NEW.KPHI.CF.A.0002.110417T0200Z-110417T0700Z/ NEW CASTLE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- DELAWARE-PHILADELPHIA- 306 PM EDT FRI APR 15 2011 ...COASTAL FLOOD WATCH IN EFFECT FROM SATURDAY EVENING THROUGH LATE SATURDAY NIGHT... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A COASTAL FLOOD WATCH...WHICH IS IN EFFECT FROM SATURDAY EVENING THROUGH LATE SATURDAY NIGHT. * TIDES...MODERATE TIDAL FLOODING IS QUITE POSSIBLE AROUND THE SATURDAY NIGHT HIGH TIDE. * AT PHILADELPHIA, PENNSYLVANIA (DELAWARE RIVER), HIGH TIDE OCCURS AT 112 AM, WITH A FORECAST TIDE LEVEL OF 9.0 TO 9.5 FEET ABOVE MEAN LOWER LOW WATER. * IMPACTS...NUMEROUS ROADWAYS MAY FLOOD. SOME DAMAGE TO PROPERTY IS POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD WATCH MEANS THAT CONDITIONS FAVORABLE FOR FLOODING ARE EXPECTED TO DEVELOP. COASTAL RESIDENTS SHOULD BE ALERT FOR LATER STATEMENTS OR WARNINGS...AND TAKE ACTION TO PROTECT PROPERTY. && $$ TFG/MPD
3 follow-up statements
153 WHUS41 KPHI 152002 CFWPHI URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 402 PM EDT FRI APR 15 2011 DEZ002>004-NJZ012>014-020>027-160900- /O.CON.KPHI.CF.A.0002.110416T2200Z-110417T0400Z/ KENT-INLAND SUSSEX-DELAWARE BEACHES-MIDDLESEX-WESTERN MONMOUTH- EASTERN MONMOUTH-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN- SOUTHEASTERN BURLINGTON- 402 PM EDT FRI APR 15 2011 ...COASTAL FLOOD WATCH REMAINS IN EFFECT SATURDAY EVENING... A COASTAL FLOOD WATCH REMAINS IN EFFECT SATURDAY EVENING. * TIDES...MODERATE TIDAL FLOODING IS QUITE POSSIBLE AROUND THE SATURDAY EVENING HIGH TIDE. * AT SANDY HOOK... NEW JERSEY (RARITAN BAY)... HIGH TIDE OCCURS AT 720 PM... WITH A FORECAST TIDE LEVEL OF 7.5 TO 8.0 FEET ABOVE MEAN LOWER LOW WATER. * AT SEASIDE HEIGHTS... NEW JERSEY (OCEANFRONT)... HIGH TIDE OCCURS AT 650 PM... WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT ATLANTIC CITY... NEW JERSEY (OCEANFRONT)... HIGH TIDE OCCURS AT 657 PM... WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT CAPE MAY... NEW JERSEY (OCEANFRONT)... HIGH TIDE OCCURS AT 731 PM... WITH A FORECAST TIDE LEVEL OF 7.5 TO 8.0 FEET ABOVE MEAN LOWER LOW WATER. * AT BREAKWATER HARBOR... DELAWARE (DELAWARE BAY)... HIGH TIDE OCCURS AT 809 PM... WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT REHOBOTH BEACH... DELAWARE (OCEANFRONT)... HIGH TIDE OCCURS AT 710 PM... WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT REEDY POINT... DELAWARE (DELAWARE BAY)... HIGH TIDE OCCURS AT 1041 PM... WITH A FORECAST TIDE LEVEL NEAR 8.5 FEET ABOVE MEAN LOWER LOW WATER. * HIGH TIDE OCCURS ON BACK BAYS AND TIDAL TRIBUTARIES LATER THAN IT DOES ALONG THE OCEANFRONT. * WAVES...WAVE HEIGHTS IN THE SURF ZONE ALONG THE OCEANFRONT MAY BE IN THE 5 TO 8 FOOT RANGE. * IMPACTS...NUMEROUS ROADWAYS MAY FLOOD. SOME DAMAGE TO PROPERTY AND MODERATE BEACH EROSION ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD WATCH MEANS THAT CONDITIONS FAVORABLE FOR FLOODING ARE EXPECTED TO DEVELOP. COASTAL RESIDENTS SHOULD BE ALERT FOR LATER STATEMENTS OR WARNINGS...AND TAKE ACTION TO PROTECT PROPERTY. && $$ DEZ001-NJZ016>019-PAZ070-071-160900- /O.CON.KPHI.CF.A.0002.110417T0200Z-110417T0700Z/ NEW CASTLE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- DELAWARE-PHILADELPHIA- 402 PM EDT FRI APR 15 2011 ...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM SATURDAY EVENING THROUGH LATE SATURDAY NIGHT... A COASTAL FLOOD WATCH REMAINS IN EFFECT FROM SATURDAY EVENING THROUGH LATE SATURDAY NIGHT. * TIDES...MODERATE TIDAL FLOODING IS QUITE POSSIBLE AROUND THE SATURDAY NIGHT HIGH TIDE. * AT PHILADELPHIA... PENNSYLVANIA (DELAWARE RIVER)... HIGH TIDE OCCURS AT 112 AM... WITH A FORECAST TIDE LEVEL OF 9.0 TO 9.5 FEET ABOVE MEAN LOWER LOW WATER. * IMPACTS...NUMEROUS ROADWAYS MAY FLOOD. SOME DAMAGE TO PROPERTY IS POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD WATCH MEANS THAT CONDITIONS FAVORABLE FOR FLOODING ARE EXPECTED TO DEVELOP. COASTAL RESIDENTS SHOULD BE ALERT FOR LATER STATEMENTS OR WARNINGS...AND TAKE ACTION TO PROTECT PROPERTY. && $$
987 WHUS41 KPHI 152350 CFWPHI URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 750 PM EDT FRI APR 15 2011 DEZ002>004-NJZ012>014-020>027-160900- /O.CON.KPHI.CF.A.0002.110416T2200Z-110417T0400Z/ KENT-INLAND SUSSEX-DELAWARE BEACHES-MIDDLESEX-WESTERN MONMOUTH- EASTERN MONMOUTH-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN- SOUTHEASTERN BURLINGTON- 750 PM EDT FRI APR 15 2011 ...COASTAL FLOOD WATCH REMAINS IN EFFECT SATURDAY EVENING... A COASTAL FLOOD WATCH REMAINS IN EFFECT SATURDAY EVENING. * TIDES...MODERATE TIDAL FLOODING IS QUITE POSSIBLE AROUND THE SATURDAY EVENING HIGH TIDE. * AT SANDY HOOK... NEW JERSEY (RARITAN BAY)... HIGH TIDE OCCURS AT 720 PM... WITH A FORECAST TIDE LEVEL OF 7.5 TO 8.0 FEET ABOVE MEAN LOWER LOW WATER. * AT SEASIDE HEIGHTS... NEW JERSEY (OCEANFRONT)... HIGH TIDE OCCURS AT 650 PM... WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT ATLANTIC CITY... NEW JERSEY (OCEANFRONT)... HIGH TIDE OCCURS AT 657 PM... WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT CAPE MAY... NEW JERSEY (OCEANFRONT)... HIGH TIDE OCCURS AT 731 PM... WITH A FORECAST TIDE LEVEL OF 7.5 TO 8.0 FEET ABOVE MEAN LOWER LOW WATER. * AT BREAKWATER HARBOR... DELAWARE (DELAWARE BAY)... HIGH TIDE OCCURS AT 809 PM... WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT REHOBOTH BEACH... DELAWARE (OCEANFRONT)... HIGH TIDE OCCURS AT 710 PM... WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT REEDY POINT... DELAWARE (DELAWARE BAY)... HIGH TIDE OCCURS AT 1041 PM... WITH A FORECAST TIDE LEVEL NEAR 8.5 FEET ABOVE MEAN LOWER LOW WATER. * HIGH TIDE OCCURS ON BACK BAYS AND TIDAL TRIBUTARIES LATER THAN IT DOES ALONG THE OCEANFRONT. * WAVES...WAVE HEIGHTS IN THE SURF ZONE ALONG THE OCEANFRONT MAY BE IN THE 5 TO 8 FOOT RANGE. * IMPACTS...NUMEROUS ROADWAYS MAY FLOOD. SOME DAMAGE TO PROPERTY AND MODERATE BEACH EROSION ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD WATCH MEANS THAT CONDITIONS FAVORABLE FOR FLOODING ARE EXPECTED TO DEVELOP. COASTAL RESIDENTS SHOULD BE ALERT FOR LATER STATEMENTS OR WARNINGS...AND TAKE ACTION TO PROTECT PROPERTY. && $$ DEZ001-NJZ016>019-PAZ070-071-160900- /O.CON.KPHI.CF.A.0002.110417T0200Z-110417T0700Z/ NEW CASTLE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- DELAWARE-PHILADELPHIA- 750 PM EDT FRI APR 15 2011 ...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM SATURDAY EVENING THROUGH LATE SATURDAY NIGHT... A COASTAL FLOOD WATCH REMAINS IN EFFECT FROM SATURDAY EVENING THROUGH LATE SATURDAY NIGHT. * TIDES...MODERATE TIDAL FLOODING IS QUITE POSSIBLE AROUND THE SATURDAY NIGHT HIGH TIDE. * AT PHILADELPHIA... PENNSYLVANIA (DELAWARE RIVER)... HIGH TIDE OCCURS AT 112 AM... WITH A FORECAST TIDE LEVEL OF 9.0 TO 9.5 FEET ABOVE MEAN LOWER LOW WATER. * IMPACTS...NUMEROUS ROADWAYS MAY FLOOD. SOME DAMAGE TO PROPERTY IS POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD WATCH MEANS THAT CONDITIONS FAVORABLE FOR FLOODING ARE EXPECTED TO DEVELOP. COASTAL RESIDENTS SHOULD BE ALERT FOR LATER STATEMENTS OR WARNINGS...AND TAKE ACTION TO PROTECT PROPERTY. && $$
260 WHUS41 KPHI 160725 CFWPHI URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 325 AM EDT SAT APR 16 2011 DEZ002>004-NJZ012>014-020>027-161600- /O.UPG.KPHI.CF.A.0002.110416T2200Z-110417T0400Z/ /O.NEW.KPHI.CF.W.0002.110416T2200Z-110417T0400Z/ KENT-INLAND SUSSEX-DELAWARE BEACHES-MIDDLESEX-WESTERN MONMOUTH- EASTERN MONMOUTH-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN- SOUTHEASTERN BURLINGTON- 325 AM EDT SAT APR 16 2011 ...COASTAL FLOOD WARNING IN EFFECT FROM 6 PM THIS EVENING TO MIDNIGHT EDT TONIGHT... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A COASTAL FLOOD WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO MIDNIGHT EDT TONIGHT. THE COASTAL FLOOD WATCH IS NO LONGER IN EFFECT. * TIDES...MODERATE TIDAL FLOODING IS POSSIBLE DURING THE HIGH TIDE THIS EVENING. * AT SANDY HOOK... NEW JERSEY (RARITAN BAY)... HIGH TIDE OCCURS AT 720 PM... WITH A FORECAST TIDE LEVEL OF 7.5 TO 8.0 FEET ABOVE MEAN LOWER LOW WATER. * AT SEASIDE HEIGHTS... NEW JERSEY (OCEANFRONT)... HIGH TIDE OCCURS AT 650 PM... WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT ATLANTIC CITY... NEW JERSEY (OCEANFRONT)... HIGH TIDE OCCURS AT 657 PM... WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT CAPE MAY... NEW JERSEY (OCEANFRONT)... HIGH TIDE OCCURS AT 731 PM... WITH A FORECAST TIDE LEVEL OF 7.5 TO 8.0 FEET ABOVE MEAN LOWER LOW WATER. * AT BREAKWATER HARBOR... DELAWARE (DELAWARE BAY)... HIGH TIDE OCCURS AT 809 PM... WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT REHOBOTH BEACH... DELAWARE (OCEANFRONT)... HIGH TIDE OCCURS AT 710 PM... WITH A FORECAST TIDE LEVEL NEAR 7.0 FEET ABOVE MEAN LOWER LOW WATER. * AT REEDY POINT... DELAWARE (DELAWARE BAY)... HIGH TIDE OCCURS AT 1041 PM... WITH A FORECAST TIDE LEVEL NEAR 8.5 FEET ABOVE MEAN LOWER LOW WATER. * HIGH TIDE OCCURS ON BACK BAYS AND TIDAL TRIBUTARIES LATER THAN IT DOES ALONG THE OCEANFRONT. * WAVES...WAVE HEIGHTS IN THE SURF ZONE ALONG THE OCEANFRONT MAY BE IN THE 5 TO 8 FOOT RANGE. * IMPACTS...NUMEROUS ROADWAYS MAY FLOOD. SOME DAMAGE TO PROPERTY AND MODERATE BEACH EROSION ARE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT. COASTAL RESIDENTS IN THE WARNED AREA SHOULD BE ALERT FOR RISING WATER...AND TAKE APPROPRIATE ACTION TO PROTECT LIFE AND PROPERTY. && $$ DEZ001-NJZ016>019-PAZ070-071-161600- /O.UPG.KPHI.CF.A.0002.110417T0200Z-110417T0700Z/ /O.NEW.KPHI.CF.W.0002.110417T0200Z-110417T0700Z/ NEW CASTLE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- DELAWARE-PHILADELPHIA- 325 AM EDT SAT APR 16 2011 ...COASTAL FLOOD WARNING IN EFFECT FROM 10 PM THIS EVENING TO 3 AM EDT SUNDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A COASTAL FLOOD WARNING...WHICH IS IN EFFECT FROM 10 PM THIS EVENING TO 3 AM EDT SUNDAY. THE COASTAL FLOOD WATCH IS NO LONGER IN EFFECT. * TIDES...MODERATE TIDAL FLOODING IS POSSIBLE WITH TONIGHT'S HIGH TIDE. * AT PHILADELPHIA... PENNSYLVANIA (DELAWARE RIVER)... HIGH TIDE OCCURS AT 112 AM SUNDAY... WITH A FORECAST TIDE LEVEL OF 9.0 TO 9.5 FEET ABOVE MEAN LOWER LOW WATER. * IMPACTS...NUMEROUS ROADWAYS MAY FLOOD. SOME DAMAGE TO PROPERTY IS POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT. COASTAL RESIDENTS IN THE WARNED AREA SHOULD BE ALERT FOR RISING WATER...AND TAKE APPROPRIATE ACTION TO PROTECT LIFE AND PROPERTY. && $$ MDZ008-012-015-019-020-161600- /O.NEW.KPHI.CF.Y.0009.110417T0600Z-110417T1400Z/ CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE- 325 AM EDT SAT APR 16 2011 ...COASTAL FLOOD ADVISORY IN EFFECT FROM 2 AM TO 10 AM EDT SUNDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A COASTAL FLOOD ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 10 AM EDT SUNDAY. * COASTAL FLOODING...MINOR TIDAL FLOODING MAY OCCUR WITH THE HIGH TIDE AFTER MIDNIGHT AND INTO SUNDAY MORNING. * TIMING...LATE TONIGHT AND SUNDAY MORNING. * IMPACTS...SPOTTY ROADWAY FLOODING IN VULNERABLE AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD ADVISORY INDICATES THAT ONSHORE WINDS AND TIDES WILL COMBINE TO GENERATE FLOODING OF LOW AREAS ALONG THE SHORE. && $$
What forecasters said that day
The local office's own words before this coastal flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this coastal flood watch went out at Apr 15, 1:39 PM EDT, 1 hour 27 minutes earlier.
Area forecast discussion, Apr 15, 1:39 PM EDT, 1 hour 27 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
139 PM EDT FRI APR 15 2011
.SYNOPSIS...
STRONG HIGH PRESSURE OVER EASTERN CANADA WILL BUILD DOWN ALONG
THE EAST COAST TODAY...BEFORE MOVING EAST OF THE COAST TONIGHT.
LOW PRESSURE OVER THE CENTRAL PLAINS WILL TRACK TOWARD THE GREAT
LAKES TONIGHT THROUGH SATURDAY...THEN INTO EASTERN CANADA SUNDAY.
THE LOW WILL DRAG A STRONG COLD FRONT ACROSS THE REGION LATE
SATURDAY NIGHT AND EARLY SUNDAY MORNING. HIGH PRESSURE WILL BUILD
IN BEHIND THE FRONT SUNDAY INTO MONDAY. THE NEXT FRONT LOOKS TO
SETTLE INTO OUR AREA TUESDAY AND WEDNESDAY.
&&
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
HAVE OBSERVED A DROP IN DEWPOINTS ACROSS SOUTHERN NEW JERSEY AND
NORTHERN DELAWARE IN RESPONSE TO A WEAK COLD FRONT THAT EDGED
SOUTHWARD THROUGH THE REGION EARLIER TODAY. ALSO HAVE NOTICED SOME
MID LEVEL CLOUDS THAT DEVELOPED OVER CENTRAL TO NORTHERN NJ,
POSSIBLY IN RESPONSE TO A LEFTOVER BOUNDARY AND JUST ENOUGH LIFT
IN THE ATMOSPHERE. AS A RESULT, WE HAVE TWEAKED TEMP, DEWPOINT, AND
SKY COVER FIELDS FOR THE LATE MORNING UPDATE. WE ALSO INCREASED
WIND GUSTS A BIT OVER CENTRAL AND SOUTHERN PORTIONS OF THE
FORECAST AREA. PREVIOUS DISCUSSION FOLLOWS.
WITH THE FLOW IN THE MID LEVELS BECOMING QUASI ZONAL WELL AHEAD OF
THE CLOSED LOW OVER THE CENTRAL PLAINS...THE CIRRUS SHIELD ACROSS
THE OHIO VALLEY MAY TEND THICKEN LATER THIS AFTERNOON. FURTHER
SOUTH...THE 0000 UTC GFS HITS THE MOISTURE WITH THE FRONT
HARDER...RESULTING IN MORE CLOUD COVER.
THIS COULD BE IN RESPONSE TO THE LOWERING INVERSION AFTER THE
SURFACE COLD FRONT. WHILE SOME MOISTURE COULD GET TRAPPED UNDER THE
INVERSION LATER TODAY AS THE BOUNDARY LAYER MOISTENS. BASED ON
THIS...WILL CONTINUE TO CARRY MORE CLOUD COVER ACROSS SOUTHERN NEW
JERSEY...DELAWARE AND NORTHEAST MARYLAND AS THE INVERSION LOWERS.
ELSEWHERE...THIS GFS MOISTURE APPEARS TO BE OVERDONE. IN FACT...THE
GFS ALSO PRODUCES SOME LIGHT PRECIPITATION AS WELL. NOT SURE WHY
THIS IS BEING PRODUCED... AS THE BEST LIFT WITH THE FRONT IS
GONE...AND THE COLUMN IN PLACE IS FAIRLY DRY. WITH THIS IN
MIND...WILL KEEP THE FORECAST AREA DRY TODAY.
THE SURFACE GRADIENT BEHIND THE FRONT INCREASES MARKEDLY TODAY...AS
STRONG HIGH PRESSURE OVER ONTARIO AND QUEBEC RIDGES DOWN THE EAST
COAST. EAST TO NORTHEAST WINDS COULD GUST ALONG THE COAST. THE NET
RESULT OF THIS COULD BE LOWER TEMPERATURES ALONG THE IMMEDIATE
COAST. THIS IS REFLECTED IN THE MOS GUIDANCE...AND HIGHS WERE BASED
MAINLY ON THE MOS BLEND.
&&
.SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY/...
THE LOW CLOUD COVERAGE SHOULD TEND TO INCREASE ACROSS SOUTHERN AREAS
TONIGHT...AS THE BOUNDARY CONDITIONS TO MOISTEN UNDER THE INVERSION.
THE EAST NORTHEAST GRADIENT SHOULD KEEP THE BOUNDARY LAYER FAIRLY
WELL MIXED...SO PATCHY FOG DOES NOT LOOK LIKE A PROBLEM. HOWEVER...
DRIZZLE IS POSSIBLE LATER TONIGHT...ESPECIALLY ACROSS DELAWARE...AS
THE THE BOUNDARY LAYER MOISTENS AND THE VEERING OF WINDS AT THE TOP
OF THE MIXED LAYER RESULTS IN A LITTLE MESOSCALE LIFT.
ELSEWHERE...CLOUDS WILL INCREASE AS THE SYNOPTIC SCALE CLOUDS START
TO RIDE OVER THE MID LEVEL RIDGE BUILDING AHEAD OF THE CLOSED LOW TO
THE WEST. THE DRY AIR IN PLACE...AND MID LEVEL RIDGING TO THE
WEST...SHOULD SLOW THE PROGRESS OF ANY WARM AIR ADVECTION INDUCED
PRECIPITATION. THIS SHOULD MEAN A DRY NIGHT FOR ALL AREAS...WITH THE
FIRST WAVE OF PRECIPITATION REACHING THE LEHIGH VALLEY AND SOUTHERN
POCONOS AROUND DAYBREAK.
A DELAY IN THE CLOUD COVER ARRIVAL ACROSS THE SOUTHERN POCONOS THIS
EVENING COULD ALLOW TEMPERATURES TO FALL FAIRLY QUICKLY IN THE DRY
AIRMASS IN PLACE. CONCEIVABLY...THIS COULD RESULT IN A DRY (AND
COLD) COLUMN AS THE FIRST OF THE WARM AIR ADVECTION PRECIPITATION
ARRIVES TOWARD DAYBREAK. NOT SURE ABOUT THE POTENTIAL FOR SNOW...BUT
SOME SLEET COULD MIX WITH THE RAIN AT THE START.
ELSEWHERE...LOWS TONIGHT WERE BASED ON A BLEND OF MOS NUMBERS. THE
CLOUDS AND PERSISTENT ONSHORE FLOW SHOULD KEEP TEMPERATURES FROM
DROPPING MUCH AFTER THE EVENING COOL OFF. THE EXCEPTION HERE
COULD BE PROTECTED AREAS ACROSS EASTERN NEW JERSEY (LIKE THE PINE
BARRENS)... WHERE RADIATIONAL COOLING COULD OCCUR BEFORE CLOUD
ARRIVAL.
MODELS HAVE COME AROUND TO MORE OR LESS OF A CONSENSUS REGARDING THE
UPCOMING EVENT SATURDAY INTO SATURDAY NIGHT. WITH THIS IN MIND...A
BLEND OF MODELS WAS USED TO DERIVE THE FORECAST SOLUTION FOR THESE
PERIODS.
THE ISENTROPIC LIFT WILL PRODUCE A FIRST AREA OF RAIN IN THE
MORNING...AFFECTING MAINLY THE LEHIGH VALLEY...SOUTHERN POCONOS AND
NORTHERN NEW JERSEY. THE SOUTHERN EDGE OF THIS RAIN BATCH COULD ALSO
AFFECT THE PHILADELPHIA AREA IN THE MORNING AS WELL...BUT THE MAIN
AFFECTS SHOULD BE NORTH OF THERE. THE SECOND...MORE IMPRESSIVE BATCH
OF RAIN WILL APPROACH FROM THE WEST AND SOUTHWEST DURING THE
AFTERNOON. THE INFLOW WITH THIS BATCH IS MUCH BETTER THAN THE
FIRST...WITH 45 TO 55 KNOTS OF SOUTHEAST INFLOW AS IT APPROACHES THE
LEHIGH VALLEY.
IN ADDITION...AS A THETA E RIDGE BECOMES SUPERIMPOSED ON THE BEST
ISENTROPIC LIFT...MODEL SOUNDINGS INDICATE THE POTENTIAL FOR
ELEVATED CONVECTION. THE BEST POTENTIAL APPEARS TO BE ON THE NOSE OF
THE APPROACHING LOW TO MID LEVEL JET...AND THUNDER WAS RETAINED FOR
SOUTHERN AREAS. THE LOWER LEVELS LOOK TOO STABLE FOR SURFACE BASED
CONVECTION...AS THE MARINE INVERSION REMAINS FIRMLY IN PLACE.
THE MARINE LAYER SHOULD ALSO KEEP THE MOMENTUM ASSOCIATED WITH THE
APPROACHING LOW LEVEL JET ABOVE THE SURFACE THROUGH LATE SATURDAY
AFTERNOON. MODEL SOUNDINGS SUGGEST THAT THE MIXED LAYER COULD RISE
TO NEAR 1500 FEET ACROSS NORTHEAST MARYLAND...DELAWARE...SOUTHEAST
PENNSYLVANIA AND SOUTHERN NEW JERSEY BY EVENING. THIS COULD ALLOW
ACCESS TO 45 KNOTS OF WIND AT THE TOP OF THE SHOW INVERSION. FOR
NOW...GUSTS WERE CAPPED AT 40 MPH IN THESE AREAS...SINCE IT IS HARD
TO GAUGE HOW HIGH THE INVERSION WILL BE AT THAT TIME.
FINALLY...HIGH TEMPERATURES WERE BASED ON A MOS BLEND...AND TREND
DOWN A BIT AS THE MARINE LAYER IN PLACE SHOULD TEMPER RISES AFTER
THE STRATUS BECOMES ENTRENCHED.
THE MAIN ACTION SHOULD OCCUR SATURDAY NIGHT. THE BEST SURFACE
GRADIENT APPEAR TO OCCUR BETWEEN 2200 UTC SATURDAY AND 0300 UTC
SUNDAY. AT THAT TIME...THE 70 KNOT LOW LEVEL JET WILL TRAVERSE THE
AREA FROM SOUTHWEST TO NORTHEAST. AGAIN...THE DEPTH OF THE MIXED
LAYER WILL DETERMINE HOW MUCH MOMENTUM IS TRANSFERRED...BUT AT THIS
DISTANCE THE POTENTIAL FOR HIGH WINDS APPEAR TO BE LOW. SINCE THIS
LOOKS LIKE A WIND ADVISORY TYPE EVENT...WILL HOLD OFF ON ISSUING A
HIGH WIND WATCH...AND LET LATER SHIFTS EVALUATE THE MIXING
POTENTIAL.
THE BEST LOW LEVEL INFLOW ALSO APPEARS TO OCCUR DURING THE EVENING
HOURS...A FEW HOURS AHEAD OF THE FOCUSING SURFACE COLD FRONT.
PRECIPITABLE WATER VALUES SHOULD PEAK NEAR 1.35 INCHES...WHICH IS
MORE THAN 2 STANDARD DEVIATIONS ABOVE NORMAL FOR MID APRIL. IN
ADDITION...WITH THE CREST OF THE THETA E RIDGE PASSING OVERHEAD...
THE THREAT FOR ELEVATED CONVECTION WAS MOVED NORTH TO COVER MUCH OF
NEW JERSEY...AS WELL AS DELAWARE AND SOUTHEAST PENNSYLVANIA.
THIS SHOULD THE PERIOD OF HEAVIEST RAIN...WITH AS MUCH AS AN INCH
FALLING IN LESS THAN 6 HOURS ACROSS MUCH OF EASTERN PENNSYLVANIA AND
NORTHERN NEW JERSEY. AT THIS TIME...MAINLY NUISANCE FLOODING IS
EXPECTED...SO A FLOOD WATCH WILL NOT BE ISSUED THIS MORNING. MORE ON
THE POTENTIAL FOR HEAVY RAIN IS CONTAINED IN THE HYDROLOGY SECTION
BELOW.
AGAIN...THE CONVECTION SHOULD REMAIN ELEVATED DURING THE EVENING
HOURS...AS THE BOUNDARY LAYER SHOULD STILL BE INFLUENCED BY THE
MARINE LAYER. HOWEVER...AS THE SURFACE COLD FRONT (OR OCCLUSION...AS
SOME MODELS SHOW THE POTENTIAL FOR A SECONDARY SURFACE LOW TO
DEVELOP NEARBY) APPROACHES...THE FLOW BECOMES SOUTHERLY (AT LEAST
ACROSS SOUTHERN AREAS. THIS RAISES THE SPECTER OF BOUNDARY LAYER
ROOTED CONVECTION JUST AHEAD OF THE COLD FRONT.
RIGHT NOW...THIS SEEMS LIKE A LONG SHOT...AS MUCH OF THE AVAILABLE
MOISTURE FOR CONVECTION MAY HAVE ALREADY BEEN SCOURED BY THE HEAVY
RAIN. HOWEVER...MIXING IN THE VICINITY OF THE FRONTAL ZONE COULD
ALLOW PARTS OF NORTHEAST MARYLAND AND DELAWARE TO BECOME MARGINALLY
UNSTABLE. FOR NOW...THIS WAS ONLY HINTED AT IN THE FORECAST...BUT
LATER FORECASTS MAY HAVE TO CONSIDER THE POSSIBILITY.
THE FRONT PASSES BETWEEN 0800 UTC AND 1200 UTC SUNDAY...AS THERE IS
SOME MODEL SPREAD ON WHEN THIS OCCURS. MOMENTUM TRANSFER IN THE
FRONTAL ZONE COULD ALLOW WEST WINDS TO GUST TO 35 MPH WITH THE
FRONTAL PASSAGE. THE RAIN SHOULD COME TO AN ABRUPT END AS THE THETA
E ADVECTION BECOMES NEGATIVE. UPSLOPE CLOUDS COULD LINGER THE HIGHER
TERRAIN SUNDAY MORNING...BUT ELSEWHERE ENOUGH DRYING ARRIVES TO
BRING MORE IN THE WAY OF SUNSHINE.
MODEL SOUNDINGS SUGGEST THAT 35 KNOTS OF WIND COULD BE AVAILABLE AT
THE TOP OF THE INVERSION FOR WINDS GUSTS DURING THE DAY. HIGHS
SHOULD BE ABLE TO REBOUND WITH SUNSHINE AND WESTERLY FLOW TO REACH
THE WARMER GFS MOS NUMBERS.
&&
.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
THE FORECAST IS A BLEND OF THE 00Z ECMWF AND THE LATEST GEFS. THE
12Z ECMWF HAS COME IN A BIT MORE PROGRESSIVE AT THE END OF THE
PERIOD, BUT GENERALLY GIVES SUPPORT TO THE 00Z RUN.
THE LONG TERM PERIOD STARTS WITH FAIR WEATHER IN THE WAKE OF A
SATURDAY NIGHT COLD FRONTAL PASSAGE, BUT THEN THE PATTERN BECOMES
SOMEWHAT UNSETTLED AGAIN AS A BAROCLINIC ZONE IS FORECAST TO
ESTABLISH ITSELF NEAR OUR REGION AFTER THE BEGINNING OF THE NEW
WEEK. THE MID-LEVEL FLOW WILL BE ZONAL, SO SOME ACTIVITY ALONG THE
BAROCLINIC ZONE IS EXPECTED.
AT THIS TIME, A RELATIVELY WEAK IMPULSE IS FORECAST TO INFLUENCE OUR
AREA AROUND TUESDAY. IT WOULD NOT MOVE THE BAROCLINIC ZONE
APPRECIABLY, AND SAID ZONE THEN LOOKS TO BECOME A SURFACE WARM FRONT
ASSOCIATED WITH SURFACE LOW PRESSURE THAT DEVELOPS IN RESPONSE TO A
FAIRLY SHARP APPROACHING MID-LEVEL IMPULSE. THE LOW PRESSURE SYSTEM
IS FORECAST TO MOVE BY TO OUR NORTH, LIKELY LIFT THE WARM FRONT
THROUGH THE AREA, AND THEN PULL THE COLD FRONT THROUGH OUR AREA BY
AROUND THURSDAY. WE SHOULD FIRST SEE SOME WARM SECTOR AIR ALOFT AND
THEN BE IN THE WARM SECTOR, SO CONVECTION BECOMES A POSSIBILITY
DURING THE MID-WEEK PERIOD.
TEMPERATURES ARE FORECAST TO START NEAR NORMAL, RISE TO ABOVE
NORMAL, AND THEN DROP TO OR BELOW NORMAL AT THE END OF THE PERIOD.
&&
.AVIATION /17Z FRIDAY THROUGH TUESDAY/...
THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY AND SURROUNDING AREAS.
A DOWNHILL FORECAST WAS ISSUED FOR OUR TERMINALS THROUGH THE TAF
PERIOD, ALTHOUGH OUTSIDE OF KACY, MVFR CONDITIONS ARE NOT FORECAST
TO DEVELOP UNTIL EARLY SATURDAY MORNING ELSEWHERE.
THE ONSHORE FLOW DEVELOPED A SC DECK IN NJ WITH CIGS BETWEEN 3K
AND 4K. FORECAST SOUNDINGS ARE NOT SHOWING AN INCREASE IN LOW
LEVEL MOISTURE THE REST OF THE AFTERNOON AND EVENING. GIVEN THAT
WE ARE EXPECTING THIS LAYER OF CLOUDS TO START DISSIPATING AS IT
EXPANDS A BIT DURING THE AFTERNOON. THE GENERAL MOTION SHOULD TAKE
THIS LAYER TOWARD THE NW AND WE MAY BE RIGHT FOR THE WRONG REASON
IF THIS DECK SKIRTS OUR TERMINALS TO THE NORTHEAST. ABOVE IT,
THERE IS A DISSIPATING LAYER OF ALTOCUMULUS CLOUDS THAT IS SHOWING
SIGNS OF EROSION. WINDS THROUGH THE AFTERNOON WILL HAVE SOME
GUSTINESS FROM THE EAST, BUT NOT ON THE EXPECTED SCALE OF
SATURDAY.
TONIGHT THE CONTINUED ONSHORE FLOW AS WELL AS THE APPROACH OF THE
FRONTAL SYSTEM FROM THE MIDWEST WILL BRING CLOUDS INTO THE
TERMINAL AREA FROM BOTH DIRECTIONS. WE ARE FORECASTING A MVFR DECK
OF STRATOCU TO FORM AND OR MOVE IN FROM THE ONSHORE FLOW TOWARD
SUNRISE ON SATURDAY MORNING. RAIN SHOULD THEN DEVELOP, INITIALLY
ON THE LIGHT SIDE WITH THE ONSHORE FLOW PRIOR TO NOON MOST
TERMINALS WHICH SHOULD SOLIDIFY MVFR CONDITIONS. WINDS WILL ALSO
START INCREASING FROM THE EAST AND SOUTHEAST WITH GUSTS EXCEEDING
30 KNOTS EXPECTED BY 18Z. IN THE KPHL 30HR TAF, WE INCREASED THE
WINDS FURTHER AND LOWERED CIGS AND VSBYS CLOSER TO IFR CONDITIONS.
.OUTLOOK...
A PERIOD OF IFR CONDITIONS IS PROBABLE AS THE HEAVIER RAIN FROM
THE MIDWEST SYSTEM SWEEPS ACROSS THE TERMINALS LATE SATURDAY
AFTERNOON INTO SATURDAY EVENING. THERE IS ALSO A LOW CHANCE OF
THUNDERSTORMS. HIGH PRESSURE MOVES BACK IN ON SUNDAY WITH DRIER
AIR AND A RETURN TO VFR CONDITIONS. GUSTY WEST WINDS WILL OCCUR ON
SUNDAY, BUT NOT ON THE SCALE OF LATER SATURDAY. LATER MONDAY INTO
WEDNESDAY, A FRONTAL BOUNDARY IS FORECAST TO STALL NEAR OR CLOSE
TO THE TERMINAL AREA. THIS SHOULD BRING SOME MVFR CONDITIONS AT
TIMES IN ANY PRECIPITATION.
&&
.MARINE...
A COLD FRONT DROPPED SOUTH ACROSS THE AREA. WINDS BECAME N TO NE
AND WILL CONTINUE TODAY. A SMALL CRAFT IS IN EFFECT. AS THE HIGH
SLIDES FURTHER TO THE EAST TONIGHT, WINDS WILL BECOME E AND
CONTINUE GUSTING TO AROUND 25 KT. A STRONG LOW PRESSURE SYSTEM
WILL MOVE UP ACROSS THE GREAT LAKES AND INTO EASTERN CANADA
SATURDAY. THE LOW WILL DRAG A COLD FRONT TOWARD OUR REGION AND
CAUSE THE PRESSURE GRADIENT TO TIGHTEN. GALE FORCE GUSTS FROM THE
SE ARE EXPECTED SATURDAY INTO SATURDAY NIGHT. A GALE WATCH WILL BE
ISSUED WITH THIS ISSUANCE. FROM ATLANTIC CITY SOUTH AND ON
DELAWARE BAY, IT WILL RUN FROM 10 AM SATURDAY TO MIDNIGHT SATURDAY
NIGHT. NORTH OF ATLANTIC CITY IT WILL RUN FROM 4 PM SATURDAY TO 4
AM SUNDAY. THE FRONT WILL CROSS OUR WATERS SATURDAY NIGHT AND MOVE
OFF TO THE EAST SUNDAY. BEHIND THE FRONT, WINDS WILL SHIFT TO THE
W AS HIGH PRESSURE PUSHES IN. WINDS SHOULD DROP BELOW ADVISORY
CRITERIA BE SUNDAY MORNING BUT IT COULD TAKE UNTIL LATE SUNDAY OR
EVEN EARLY SUNDAY NIGHT FOR SEAS TO LOWER ON THE OCEAN.
&&
.HYDROLOGY...
RECOVERY TIME AFTER THE LAST ROUND OF HEAVY RAIN HAS ALLOWED RIVERS
AND STREAMS TO RETURN TO THE PLACE THEY WERE BEFORE THE HEAVY RAIN
EARLIER THIS WEEK. WITH ANTECEDENT CONDITIONS MORE OR LESS STABLE...
THE POTENTIAL FOR FLOODING DOES NOT APPEAR TO BE AS HIGH AS IT
LOOKED A DAY OR TWO AGO.
THE BEST LOW LEVEL INFLOW OCCURS LATE SATURDAY AFTERNOON AND
SATURDAY NIGHT...WITH PRECIPITABLE WATER VALUES APPROACH 1.30
INCHES. ELEVATED CONVECTION WILL ALSO AID IN PRECIPITATION
EFFICIENCY. RIGHT NOW...ALL SHORT RANGE MODELS AND THE HPC QPF
FORECAST INDICATE BETWEEN 1.00 AND 1.50 INCHES OF RAIN...WITH HE
HIGHEST AMOUNTS ACROSS THE SOUTHERN POCONOS AND NORTHWEST NEW
JERSEY.
THE PLACEMENT OF THE HEAVIEST RAIN MAKES SENSE...AS UPSLOPE SHOULD
BE A MAJOR CONTRIBUTING FACTOR FOR QPF DURING SATURDAY AFTERNOON AND
SATURDAY EVENING. THE RAINFALL AMOUNTS ABOVE ARE ON THE LOWER EDGES
OF THE HEADWATER GUIDANCE FOR SOUTHEAST PENNSYLVANIA INTO NORTH
CENTRAL NEW JERSEY. SINCE THE EVENT SHOULD BE FAIRLY TRANSITORY...
AND ANTECEDENT CONDITIONS ARE NOT MUCH WETTER THAN THE PREVIOUS
ROUND OF HEAVY RAIN...WILL HOLD OFF ON A FLOOD WATCH THIS MORNING.
&&
.TIDES/COASTAL FLOODING...
CURRENT PROJECTIONS CONTINUE TO SHOW A PERIOD OF VERY ELEVATED
TIDE LEVELS DURING THE SATURDAY NIGHT HIGH TIDE CYCLE. WHILE MOST
AREAS WILL SEE MINOR TIDAL FLOODING, THERE COULD BE MODERATE
FLOODING IN SOME LOCATIONS. THE MOST SUSCEPTIBLE AREA FOR
MODERATE FLOODING WILL BE DELAWARE BAY, WHERE VERY STRONG SE
WINDS WILL FUNNEL UP THE BAY AND COULD REACH 40 KT LATE SATURDAY
AND EARLY SATURDAY NIGHT RIGHT AROUND THE TIME OF HIGH TIDE. WE
WILL CONTINUE TO MONITOR THIS SITUATION AS THE EVENT APPROACHES.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...NONE.
NJ...NONE.
DE...NONE.
MD...NONE.
MARINE...GALE WATCH FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR
ANZ430-431-452>455.
SMALL CRAFT ADVISORY UNTIL 10 AM EDT SATURDAY FOR ANZ430-431-
452>455.
GALE WATCH FROM SATURDAY AFTERNOON THROUGH LATE SATURDAY NIGHT
FOR ANZ450-451.
SMALL CRAFT ADVISORY UNTIL 4 PM EDT SATURDAY FOR ANZ450-451.
&&
SYNOPSIS...HAYES
NEAR TERM...HAYES/KLINE
SHORT TERM...HAYES
LONG TERM...DELISI
AVIATION...GIGI
MARINE...GIGI/RPW
HYDROLOGY...
TIDES/COASTAL FLOODING...Hazardous weather outlook, Apr 15, 7:22 AM EDT, 7 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 722 AM EDT FRI APR 15 2011 MDZ008-NJZ001-007>010-015-PAZ054-055-060>062-067>069-161130- CECIL-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MERCER-CARBON-MONROE- BERKS-LEHIGH-NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS- 722 AM EDT FRI APR 15 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MARYLAND...CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...NORTHWEST NEW JERSEY...EAST CENTRAL PENNSYLVANIA...NORTHEAST PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. WINDS MAY GUST TO 40 MPH AT TIMES SATURDAY NIGHT. IN ADDITION... LOCALLY HEAVY RAINFALL COULD RESULT IN POOR DRAINAGE FLOODING SATURDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. DEZ001>004-MDZ012-015-019-020-NJZ012>014-016>027-PAZ070-071-161130- NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-KENT MD-QUEEN ANNES- TALBOT-CAROLINE-MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH-SALEM- GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC- CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN- SOUTHEASTERN BURLINGTON-DELAWARE-PHILADELPHIA- 722 AM EDT FRI APR 15 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...NORTHERN DELAWARE...SOUTHERN DELAWARE...NORTHEAST MARYLAND...CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...SOUTHERN NEW JERSEY AND SOUTHEAST PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. WINDS MAY GUST TO 40 MPH AT TIMES SATURDAY NIGHT. IN ADDITION... LOCALLY HEAVY RAINFALL COULD RESULT IN POOR DRAINAGE FLOODING SATURDAY NIGHT. FINALLY..MINOR TO MODERATE TIDAL FLOODING IS POSSIBLE SATURDAY NIGHT INTO SUNDAY MORNING ALONG THE COAST, RARITAN BAY, DELAWARE BAY AND THE LOWER PORTION OF THE DELAWARE RIVER AND ALONG THE MARYLAND EASTERN SHORE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ430-431-452>455-161130- DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE- DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE- COASTAL WATERS FROM LITTLE EGG INLET TO GREAT EGG INLET NJ OUT 20 NM- COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM- COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM- COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM- 722 AM EDT FRI APR 15 2011 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT SATURDAY... ...GALE WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SMALL CRAFT ADVISORY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SMALL CRAFT ADVISORY. GALE WATCH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ450-451-161130- COASTAL WATERS FROM SANDY HOOK TO MANASQUAN INLET NJ OUT 20 NM- COASTAL WATERS FROM MANASQUAN INLET TO LITTLE EGG INLET NJ OUT 20 NM- 722 AM EDT FRI APR 15 2011 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT SATURDAY... ...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE SATURDAY NIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SMALL CRAFT ADVISORY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SMALL CRAFT ADVISORY. GALE WATCH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 4:10 AM EDT | Gale Watch | PHI | 11 hr | |
| Apr 15, 3:10 PM EDT | Wind Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 32 hr |
| Apr 15, 3:32 PM EDT | Gale Warning | PHI | 37 hr |
Nearby
Coastal Flood Watches in New Jersey, 2011Coastal Flood Watches in Delaware, 2011Coastal Flood Watches in Pennsylvania, 2011Every coastal flood watch in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.