Alert archive / Pennsylvania / Areal Flood Warnings in 2014
Areal Flood Warning 16, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Apr 30, 2014, 12:49 PM EDT for Cecil County, Maryland; New Castle County, Delaware; 5 counties in Pennsylvania. It was in force for 26 hr. 14 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 30, 2014, 12:49 PM EDT (16:49 UTC)
- Expired
- May 1, 2014, 2:39 PM EDT
- In force
- 26 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties New Castle County, DE, Cecil County, MD, Berks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 111 km from the middle of the area, began a volume at 16:49 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 30, 1:47 PM EDT | FLOOD | East Coventry Twp, PA | PIGEON CREEK OVERFLOW...HALTEMAN ROAD AND KOLP ROAD INTERSECTION IS FLOODED. |
| Apr 30, 1:47 PM EDT | FLASH FLOOD | East Coventry Twp, PA | PIGEON CREEK OVERFLOW...HALTEMAN ROAD AND KOLP ROAD INTERSECTION IS FLOODED. |
| Apr 30, 6:48 PM EDT | FLOOD | Avondale, PA | AN APARTMENT COMPLEX WAS EVACUATED DUE TO FLOODING |
| Apr 30, 6:55 PM EDT | FLOOD | Modena, PA | AN APARTMENT COMPLEX WAS EVACUATED DUE TO FLOODING. |
| Apr 30, 6:56 PM EDT | FLOOD | West Chester, PA | NUMEROUS ROADS CLOSED THROUGHOUT COUNTY |
| Apr 30, 7:01 PM EDT | FLOOD | Limerick Twp, PA | SEVERAL ROADS CLOSED DUE TO FLOODING IN THE TOWNSHIP. |
| Apr 30, 7:03 PM EDT | FLOOD | Horsham Twp, PA | NUMEROUS ROADS CLOSED DUE TO FLOODING ACROSS THE COUNTY. |
| Apr 30, 9:00 PM EDT | FLOOD | Ambler, PA | FLOODING FROM THE WISSAHICKON CREEK HAS CLOSED SEVERAL ROADS IN THE AREA. |
| Apr 30, 9:00 PM EDT | FLOOD | Chester, PA | STATE OF EMERGENCY DECLARED FOR CHESTER... MARPLE TOWNSHIP AND DARBY BOROUGH DUE TO WIDESPREAD SIGNIFICANT FLOODING. |
| Apr 30, 9:26 PM EDT | FLOOD | Stanton, DE | ROUTE 7 SOUTH AND ROUTE 2 IN NEWARK CLOSED. |
| Apr 30, 11:00 PM EDT | FLOOD | Phoenixville, PA | FRENCH CREEK FLOODING COVENTRYVILLE ROAD AND WARWICK PARK. |
| May 1, 12:00 AM EDT | FLOOD | Collegeville, PA | FLOODING ALONG THE PERKIOMEN CREEK. THE RISING WATERS CLOSED THE BRIDGE OVER THE CREEK ON MAIN STREET AS WELL AS ROUTE 29. |
| May 1, 5:00 AM EDT | FLOOD | Downingtown, PA | FLOODING FROM THE BRANDYWINE CREEK RESULTED IN THE CLOSURE OF BALTIMORE PIKE AT CREEK ROAD. |
| May 1, 5:00 AM EDT | FLOOD | Philadelphia, PA | PORTIONS OF KELLY DRIVE AND MLK DRIVE CLOSED DUE TO FLOODING FROM THE SCHUYLKILL RIVER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 4.8 hours before the alert went out and 67 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 439 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 652 m²/s²
- 0-3 km storm-relative helicity
- 902 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
888
WGUS41 KPHI 301649
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1249 PM EDT WED APR 30 2014
DEC003-MDC015-PAC011-029-045-091-101-302245-
/O.NEW.KPHI.FA.W.0016.140430T1649Z-140430T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BERKS PA-MONTGOMERY PA-PHILADELPHIA PA-DELAWARE PA-NEW CASTLE DE-
CECIL MD-CHESTER PA-
1249 PM EDT WED APR 30 2014
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
BERKS COUNTY IN EASTERN PENNSYLVANIA...
MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA...
PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA...
NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
CECIL COUNTY IN NORTHEAST MARYLAND...
CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 645 PM EDT
* AT 1243 PM EDT...IN EXCESS OF TWO INCHES OF RAIN HAVE FALLEN
ACROSS PORTIONS OF THE WARNED AREA. AN ADDITIONAL ONE TO TWO INCHES
IS POSSIBLE THIS AFTERNOON.
STREAM GAGES ALONG THE MANATAWNY CREEK, FRENCH CREEK, AND ALL THE
BRANCHES OF THE PERKIOMEN SHOW RISING WATER LEVELS. THESE CREEKS,
ALONG WITH OTHERS, ARE EXPECTED TO EXCEED FLOOD STAGE THIS AFTERNOON.
A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS IMMEDIATELY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
&&
LAT...LON 4058 7603 4065 7599 4068 7589 4012 7497
4005 7497 3995 7514 3988 7515 3985 7534
3976 7546 3962 7560 3960 7560 3963 7556
3951 7555 3949 7600 3972 7623 3973 7614
3979 7605 4011 7595 4014 7589 4050 7644
$$
KRUZDLO7 follow-up statements
848
WGUS41 KPHI 302027
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
427 PM EDT WED APR 30 2014
DEC003-MDC015-PAC011-029-045-091-101-010145-
/O.EXT.KPHI.FA.W.0016.000000T0000Z-140501T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BERKS PA-MONTGOMERY PA-PHILADELPHIA PA-DELAWARE PA-NEW CASTLE DE-
CECIL MD-CHESTER PA-
427 PM EDT WED APR 30 2014
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
BERKS COUNTY IN EASTERN PENNSYLVANIA...
MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA...
PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA...
NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
CECIL COUNTY IN NORTHEAST MARYLAND...
CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 945 PM EDT
* AT 414 PM EDT...RAINFALL, BETWEEN TWO AND FOUR INCHES, HAS ALREADY
FALLEN ACROSS PORTIONS OF THE WARNED AREA. AN ADDITIONAL ONE TO
THREE INCHES IS POSSIBLE INTO THIS EVENING.
EXCESSIVE RUNOFF ASSOCIATED WITH THIS RAINFALL WILL CAUSE
SIGNIFICANT FLOODING OF HIGHWAYS, STREETS, AND OTHER POOR DRAINAGE
AREAS AND LOW LYING SPOTS SUCH AS UNDERPASSES.
SMALLER CREEKS AND STREAMS WILL ALSO RISE ABOVE THEIR BANKS. SOME
CREEKS INCLUDE THE MANATAWNY, PERKIOMEN AND IT'S BRANCHES, FRENCH,
WISSAHICKON, CHESTER, CRUM, AND THE BRANDYWINE AND IT'S BRANCHES.
SIGNIFICANT FLOODING IS EXPECTED.
ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS IMMEDIATELY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
DRIVING INTO FLOOD WATERS COULD PUT YOUR LIFE AT RISK AND COST YOU
THOUSANDS OF DOLLARS IN VEHICLE REPAIRS. FLOOD WATERS MAY BE DEEPER
THAN YOU THINK. TURN AROUND AND FIND AN ALTERNATE ROUTE.
DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.
&&
LAT...LON 4058 7603 4065 7599 4068 7589 4012 7497
4005 7497 3995 7514 3988 7515 3985 7534
3976 7546 3962 7560 3960 7560 3963 7556
3951 7555 3949 7600 3972 7623 3973 7614
3979 7605 4011 7595 4014 7589 4050 7644
$$
KRUZDLO252
WGUS41 KPHI 302336
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
736 PM EDT WED APR 30 2014
DEC003-MDC015-PAC011-029-045-091-101-010745-
/O.EXT.KPHI.FA.W.0016.000000T0000Z-140501T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BERKS PA-MONTGOMERY PA-PHILADELPHIA PA-DELAWARE PA-NEW CASTLE DE-
CECIL MD-CHESTER PA-
736 PM EDT WED APR 30 2014
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
BERKS COUNTY IN EASTERN PENNSYLVANIA...
MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA...
PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA...
NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
CECIL COUNTY IN NORTHEAST MARYLAND...
CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 345 AM EDT THURSDAY
* THIS IS A DANGEROUS AND LIFE THREATENING SITUATION. PLEASE FOLLOW
THE DIRECTION OF EMERGENCY RESPONDERS IN YOUR AREA. UNDER
ABSOLUTELY NO CIRCUMSTANCES SHOULD YOU DRIVE AROUND BARRICADES.
EVACUATE IF TOLD TO DO SO.
* SHOWERS AND ISOLATED THUNDERSTORMS WITH HEAVY RAIN WILL CONTINUE
INTO THE NIGHT WITH AN ADDTIONAL ONE TO TWO INCHES OF RAIN
LIKELY.
* MAJOR CREEK FLOODING IS ONGOING AND EXPECTED TO WORSEN.
* WATERWAYS IN FLOOD INCLUDE AND ARE NOT LIMITED TO THE CHRISTINA
RIVER, BIG ELK CREEK, BRANDYWINE CREEK, PERKIOMEN CREEK,
WISSAHICKON CREEK AND THE SCHUYLKILL RIVER.
A FLOOD WARNING MEANS THAT FLOODING IS OCCURRING. ALL INTERESTED
PARTIES SHOULD TAKE NECESSARY PRECAUTIONS IMMEDIATELY TO SAVE
LIFE AND PROPERTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE ELEVATED LEVELS ON
SMALL CREEKS AND STREAMS...AND PONDING OF WATER IN URBAN AREAS...
HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER POOR DRAINAGE
AREAS AND LOW LYING SPOTS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
DRIVING INTO FLOOD WATERS COULD PUT YOUR LIFE AT RISK AND COST YOU
THOUSANDS OF DOLLARS IN VEHICLE REPAIRS. FLOOD WATERS MAY BE DEEPER
THAN YOU THINK. TURN AROUND AND FIND AN ALTERNATE ROUTE.
DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.
&&
LAT...LON 4058 7603 4065 7599 4068 7589 4012 7497
4005 7497 3995 7514 3988 7515 3985 7534
3976 7546 3962 7560 3960 7560 3963 7556
3951 7555 3949 7600 3972 7623 3973 7614
3979 7605 4011 7595 4014 7589 4050 7644
$$
TFG583
WGUS41 KPHI 010600
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
200 AM EDT THU MAY 1 2014
DEC003-MDC015-PAC011-029-045-091-101-011345-
/O.EXT.KPHI.FA.W.0016.000000T0000Z-140501T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BERKS PA-MONTGOMERY PA-PHILADELPHIA PA-DELAWARE PA-NEW CASTLE DE-
CECIL MD-CHESTER PA-
200 AM EDT THU MAY 1 2014
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
BERKS COUNTY IN EASTERN PENNSYLVANIA...
MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA...
PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA...
NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
CECIL COUNTY IN NORTHEAST MARYLAND...
CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 945 AM EDT
* THIS REMAINS A DANGEROUS AND LIFE THREATENING SITUATION. PLEASE
FOLLOW THE DIRECTION OF EMERGENCY RESPONDERS IN YOUR AREA. UNDER
ABSOLUTELY NO CIRCUMSTANCES SHOULD YOU DRIVE AROUND BARRICADES.
EVACUATE IF TOLD TO DO SO.
* MAJOR CREEK FLOODING CONTINUES.
* WATERWAYS IN FLOOD INCLUDE AND ARE NOT LIMITED TO THE CHRISTINA
RIVER, BIG ELK CREEK, BRANDYWINE CREEK, PERKIOMEN CREEK,
WISSAHICKON CREEK, WHITE CLAY CREEK, RED CLAY CREEK, CHESTER
CREEK, CRUM CREEK, FRENCH CREEK, MANATAWNY CREEK, AND THE
SCHUYLKILL RIVER.
A FLOOD WARNING MEANS THAT FLOODING IS OCCURRING. ALL INTERESTED
PARTIES SHOULD TAKE NECESSARY PRECAUTIONS IMMEDIATELY TO SAVE LIFE
AND PROPERTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE ELEVATED LEVELS ON
SMALL CREEKS AND STREAMS...AND PONDING OF WATER IN URBAN AREAS...
HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER POOR DRAINAGE
AREAS AND LOW LYING SPOTS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.
&&
LAT...LON 4058 7603 4065 7599 4068 7589 4012 7497
4005 7497 3995 7514 3988 7515 3985 7534
3976 7546 3962 7560 3960 7560 3963 7556
3951 7555 3949 7600 3972 7623 3973 7614
3979 7605 4011 7595 4014 7589 4050 7644
$$
KRUZDLO043
WGUS41 KPHI 011342
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
942 AM EDT THU MAY 1 2014
DEC003-MDC015-PAC011-029-045-091-101-011645-
/O.EXT.KPHI.FA.W.0016.000000T0000Z-140501T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BERKS PA-MONTGOMERY PA-PHILADELPHIA PA-DELAWARE PA-NEW CASTLE DE-
CECIL MD-CHESTER PA-
942 AM EDT THU MAY 1 2014
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
BERKS COUNTY IN EASTERN PENNSYLVANIA...
MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA...
PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA...
NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
CECIL COUNTY IN NORTHEAST MARYLAND...
CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 1245 PM EDT
* AT 939 AM EDT...MANY STREAMS HAVE RECEDED BACK INTO THEIR BANKS
AFTER FLOODING FROM YESTERDAYS HEAVY RAIN. HOWEVER...WATER
CONTINUES TO CAUSE MINOR PROBLEMS IN LOW LYING AREAS AND OTHER
POOR DRAINAGE LOCATIONS. THE AREAL FLOOD WARNING HAS THEREFORE
BEEN EXTENDED INTO EARLY THIS AFTERNOON TO PROVIDE ENOUGH TIME FOR
EXCESS WATER TO DRAIN.
A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 4058 7603 4065 7599 4068 7589 4012 7497
4005 7497 3995 7514 3988 7515 3985 7534
3976 7546 3962 7560 3960 7560 3963 7556
3951 7555 3949 7600 3972 7623 3973 7614
3979 7605 4011 7595 4014 7589 4050 7644
$$
JJM765
WGUS81 KPHI 011541
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1141 AM EDT THU MAY 1 2014
PAC011-011549-
/O.CAN.KPHI.FA.W.0016.000000T0000Z-140501T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BERKS PA-
1141 AM EDT THU MAY 1 2014
...THE FLOOD WARNING HAS BEEN CANCELLED FOR URBAN AREAS AND SMALL
STREAMS IN BERKS COUNTY...
RUNOFF FROM YESTERDAYS RAIN HAS NOW RECEDED IN MOST AREAS.
LAT...LON 3972 7623 3973 7614 3977 7607 3988 7599
4011 7595 4026 7568 4044 7552 4011 7496
4005 7497 3995 7514 3988 7515 3985 7534
3976 7546 3962 7560 3960 7560 3963 7556
3951 7555 3949 7600 3952 7599 3954 7605
$$
DEC003-MDC015-PAC029-045-091-101-011645-
/O.CON.KPHI.FA.W.0016.000000T0000Z-140501T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONTGOMERY PA-PHILADELPHIA PA-DELAWARE PA-NEW CASTLE DE-CECIL MD-
CHESTER PA-
1141 AM EDT THU MAY 1 2014
...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 PM EDT FOR URBAN
AREAS AND SMALL STREAMS IN CHESTER...CECIL...NORTHERN NEW CASTLE...
DELAWARE...PHILADELPHIA AND MONTGOMERY COUNTIES...
AT 1139 AM EDT...PONDING OF WATER CONTINUES IS A FEW LOW-LYING SPOTS
IN THE AREA AS A RESULT OF YESTERDAYS RAIN. THE AREAL FLOOD WARNING
REMAINS IN EFFECT TO PROVIDE ENOUGH TIME FOR THIS WATER TO DRAIN.
A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY.
&&
LAT...LON 3972 7623 3973 7614 3977 7607 3988 7599
4011 7595 4026 7568 4044 7552 4011 7496
4005 7497 3995 7514 3988 7515 3985 7534
3976 7546 3962 7560 3960 7560 3963 7556
3951 7555 3949 7600 3952 7599 3954 7605
$$
JJM295
WGUS41 KPHI 011602
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1202 PM EDT THU MAY 1 2014
DEC003-MDC015-PAC029-045-091-101-011945-
/O.EXT.KPHI.FA.W.0016.000000T0000Z-140501T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONTGOMERY PA-PHILADELPHIA PA-DELAWARE PA-NEW CASTLE DE-CECIL MD-
CHESTER PA-
1202 PM EDT THU MAY 1 2014
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA...
PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA...
NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
CECIL COUNTY IN NORTHEAST MARYLAND...
CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 345 PM EDT
* AT 1157 AM EDT...SOME SMALL STREAMS IN THE AREA CONTINUE TO RUN
HIGH FROM YESTERDAYS HEAVY RAIN. IN ADDITION...LOW LYING AREAS
CONTINUE TO HOLD WATER IN SPOTS. THE AREAL FLOOD WARNING HAS
THEREFORE BEEN EXTENDED INTO THIS AFTERNOON AS RUNOFF CONTINUES TO
DRAIN.
A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
LAT...LON 3972 7623 3973 7614 3977 7607 3988 7599
4011 7595 4026 7568 4044 7552 4011 7496
4005 7497 3995 7514 3988 7515 3985 7534
3976 7546 3962 7560 3960 7560 3963 7556
3951 7555 3949 7600 3952 7599 3954 7605
$$
JJM983
WGUS81 KPHI 011839
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
239 PM EDT THU MAY 1 2014
DEC003-MDC015-PAC029-045-091-101-011844-
/O.CAN.KPHI.FA.W.0016.000000T0000Z-140501T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONTGOMERY PA-PHILADELPHIA PA-DELAWARE PA-NEW CASTLE DE-CECIL MD-
CHESTER PA-
239 PM EDT THU MAY 1 2014
...THE FLOOD WARNING HAS BEEN CANCELLED FOR URBAN AREAS AND SMALL
STREAMS IN CHESTER...CECIL...NORTHERN NEW CASTLE...DELAWARE...
PHILADELPHIA AND MONTGOMERY COUNTIES...
ALL GAGED SMALLER CREEKS HAVE FALLEN BELOW FLOOD STAGE IN THE AREA.
THERE IS STILL ONGOING FLOODING ALONG THE SCHUYLKILL RIVER AND
BRANDYWINE CREEK. PLEASE REFER TO THE FLOOD STATEMENTS ABOUT THOSE
WATERWAYS.
THERE MAY BE SOME LEFTOVER PONDING IN LOW LYING SPOTS ON ROADWAYS
AND UNDERPASSES. PLEASE TAKE ROADWAYS LESS PRONE TO FLOODING AND DO
NOT DRIVE AROUND ANY BARRICADES.
LAT...LON 3972 7623 3973 7614 3977 7607 3988 7599
4011 7595 4026 7568 4044 7552 4011 7496
4005 7497 3995 7514 3988 7515 3985 7534
3976 7546 3962 7560 3960 7560 3963 7556
3951 7555 3949 7600 3952 7599 3954 7605
$$
TFGWhat forecasters said that day
The local office's own words before this areal flood warning 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 areal flood warning went out at Apr 30, 12:20 PM EDT, 29 minutes earlier.
Area forecast discussion, Apr 30, 12:20 PM EDT, 29 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1220 PM EDT WED APR 30 2014
.SYNOPSIS...
A LOW PRESSURE SYSTEM WILL MEANDER NEAR THE GREAT LAKES REGION TODAY
INTO THURSDAY. A WARM FRONT WILL THEREFORE GRADUALLY LIFT NORTHWARD
ACROSS THE MID ATLANTIC STATES TODAY AND TONIGHT. A COLD FRONT IS
THEN FORECAST TO SLIDE ACROSS OUR AREA THURSDAY. AN AREA OF HIGH
PRESSURE BUILDS TO OUR SOUTH FRIDAY AND SATURDAY, HOWEVER ANOTHER
COLD FRONT MOVES THROUGH OUR REGION SATURDAY NIGHT AND SUNDAY. HIGH
PRESSURE GRADUALLY BUILDS IN FOR MONDAY AND TUESDAY.
&&
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
WILL MAINTAIN THE PERSISTENCE FCST AS THE RADAR IS FILLED WITH
GENLY LIGHT TO MDT RAIN ECHOES ATTM. THERE HAVE BEEN A FEW
LIGHTNING STRIKES ACRS THE DELMARVA, BUT THEY HAVE NOT BEEN
WIDESPREAD OR PERSISTENT. WHILE THE CALENDAR IS ABOUT TO TURN TO
MAY, IT FEELS MORE LIKE EARLY MARCH, WITH JUST ANOTHER DREARY DAY
IN STORE. EXPECT PERIODS OF RAIN, PSBLY TO BECOME MORE SHOWERY
LATER TODAY. A WARM FRONT WILL SLOWLY WORK ITS WAY N DURG THE DAY.
EVEN IN THE WARM SECTOR HOWEVER, EXPECT THE LOW LEVEL INVERSION TO
PERSIST. THEREFORE, ANY THUNDERSTORMS WILL HAVE TO RELY ON ELEVATED
INSTABILITY WITH PARCELS LIFTED FROM AROUND THE 900 TO 800 MB
LEVELS. EVEN WITH THAT, CAPE VALUES WILL BE MODEST AT
BEST...GENERALLY LESS THAN 200 J/KG. IF ANY STORMS DEVELOP HOWEVER,
THERE IS A SMALL CONCERN THAT WEAK DOWN DRAFTS COULD MIX THE 40KT+
WINDS FROM THE LOW LEVELS DOWN TO THE SURFACE, BUT THIS IS STILL
QUITE UNCERTAIN.
&&
.SHORT TERM /6 PM THIS EVENING THROUGH 6 AM THURSDAY/...
THROUGH THIS PERIOD, WE WILL SEE THE ARRIVAL OF THE DRY SLOT IN OUR
REGION. HOWEVER, GIVEN THE CONTINUED MOIST SOUTHERLY SURFACE FLOW,
STILL EXPECT AT LEAST LIGHT RAIN TO CONTINUE THROUGH THE OVERNIGHT
HOURS. MODEL SOUNDINGS ALSO CONTINUE TO SHOW SOME ELEVATED
INSTABILITY, PRIMARILY IN DELMARVA, THOUGH THE CHANCES FOR
THUNDERSTORMS SHOULD BE ON THE DECREASE AFTER MIDNIGHT AS THE AXIS
OF HIGHEST PWAT VALUES SLIDES OFF SHORE. WITH THE PERSISTENT LOW
LEVEL CLOUD COVER, AND SOUTHERLY FLOW, EXPECT TEMPERATURES TONIGHT
TO ONLY BE A FEW DEGREES BELOW THE HIGHS TODAY.
&&
.LONG TERM /THURSDAY THROUGH TUESDAY/...
THE OVERALL SYNOPTIC SETUP INITIALLY REVOLVES AROUND A LARGE CLOSED
LOW. THIS FEATURE IS FORECAST TO SLOWLY WEAKEN AS IT LIFTS ACROSS
THE GREAT LAKES REGION AND INTO CANADA THURSDAY AND FRIDAY. THIS
WILL DRIVE A COLD FRONT ACROSS OUR REGION, HOWEVER ENERGY HANGING
BACK LOOKS TO MAINTAIN AN UPPER-LEVEL TROUGH ACROSS THE PLAINS TO
THE GREAT LAKES WHICH THEN SHIFTS EASTWARD SATURDAY AND SUNDAY. THIS
MAY AMPLIFY ONCE AGAIN SUNDAY OR EARLY NEXT WEEK IN THE EAST AS
RIDGING BUILDS ACROSS THE CENTRAL AND NORTHERN PLAINS. THE MOST
ORGANIZED PRECIPITATION LOOKS TO BE FEATURED ON THURSDAY AS A COLD
FRONT SHIFTS EASTWARD. WE USED A GENERAL MODEL BLEND THURSDAY
THROUGH SATURDAY, THEN UTILIZED THE 00Z WPC GUIDANCE WITH CONTINUITY
OVERALL.
FOR THURSDAY...A COLD FRONT WILL BE MOVING ACROSS THE REGION. AS
THIS OCCURS, THE LOW-LEVEL JET IS FORECAST TO BE SHIFTING OFFSHORE
EARLY IN THE MORNING. WHILE THIS WILL TEND TO LESSEN THE FORCING AND
DEEPER MOISTURE ADVECTION, ENOUGH FORCING ALONG WITH SOME
INSTABILITY AHEAD OF THE FRONT SHOULD RESULT IN A BAND OF SHOWERS
AND SOME THUNDER. THE POPS WERE THEREFORE INCREASED FOR A TIME
BEFORE DECREASING QUITE A BIT FROM ABOUT MIDDAY ON. IT APPEARS
THAT FROM ABOUT INTERSTATE 95 ON EASTWARD HAS THE GREATEST CHC FOR
SHOWERS AND SOME THUNDER GIVEN THE EASTWARD SHIFTING DEEPER MOISTURE
AND FRONTAL ZONE TIMING. THE INSTABILITY SHOULD BE HELD DOWN DUE TO
ONGOING ACTIVITY TO START, HOWEVER A WARMER AND MOIST AIRMASS WILL
BE IN PLACE. AS OF NOW, ANY SEVERE THUNDERSTORM THREAT LOOKS TO BE
RATHER LOW. GIVEN THE ANTICIPATED RUNOFF AND SHOWERS HANGING ON,
THE FLOOD WATCH CONTINUES THROUGH THE MORNING. A LAG THOUGH IN
THE TRUE CAA POST-FRONTAL WILL ALLOW FOR A WARM DAY ACROSS THE
ENTIRE AREA. OTHERWISE, THE WINDS WILL SHIFT TO THE WEST-NORTHWEST
ESPECIALLY LATER IN THE DAY AS THE COLD FRONT WORKS ITS WAY
EASTWARD. THE CLOUDS WILL ALSO START TO ERODE, ESPECIALLY AT NIGHT
FROM WEST TO EAST AS DRYING ARRIVES.
FOR FRIDAY AND SATURDAY...OUR WEATHER WILL STILL BE INFLUENCED BY
THE WEAKENING UPPER-LEVEL LOW AS IT TRACKS UP ACROSS SOUTHEASTERN
CANADA. THERE IS ADDITIONAL SHORT WAVE ENERGY TRACKING NORTHEASTWARD
WITHIN THE SOUTHWESTERLY FLOW ALOFT, AND WITH STEEPER LAPSE RATES
AND ENOUGH MOISTURE AND HEATING SOME SHOWERS MAY RESULT ESPECIALLY
EACH AFTERNOON. IT APPEARS THE BEST CHC IS ACROSS THE NORTHWEST
ZONES, ALTHOUGH THIS MAY SPREAD FARTHER SOUTHEASTWARD SOMEWHAT
SATURDAY AS A COLD FRONT ARRIVES LATE IN THE DAY. THE OVERALL
MOISTURE AND FORCING WITH THIS COLD FRONT LOOKS TO BE WEAK,
THEREFORE WE ARE NOT ANTICIPATING MUCH IN THE WAY OF QPF.
FOR SUNDAY...A COLD FRONT LOOKS TO BE CROSSING THE AREA MAINLY
DURING THE MORNING, ALTHOUGH THIS BOUNDARY MAY THEN STALL TO OUR
SOUTH. AS MENTIONED ABOVE, THIS FRONT LOOKS TO LACK DEEP MOISTURE
AND LIFT THEREFORE NOT EXPECTING MUCH WITH IT. THE FLOW IS GENERALLY
WESTERLY WITH THE AIRMASS MODERATING SOME ESPECIALLY FROM THE
SOUTHERN ZONES ON SOUTHWARD. DUE TO SOME ADDED DOWNSLOPING, THE
COASTAL PLAIN ESPECIALLY MAY END UP BEING WARMER.
FOR MONDAY AND TUESDAY...A STALLED FRONTAL BOUNDARY LOOKS TO BE
POSITIONED WELL TO OUR SOUTH. AS AN UPPER-LEVEL TROUGH AMPLIFIES
ACROSS THE NORTHEAST, SURFACE HIGH PRESSURE BEGINS TO BUILD IN FROM
THE GREAT LAKES MONDAY. THIS SURFACE HIGH SHOULD THEN SLIDE ACROSS
OUR AREA TUESDAY. A DRY FORECAST OVERALL ATTM.
&&
.AVIATION /16Z WEDNESDAY THROUGH SUNDAY/...
THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY AND SURROUNDING AREAS.
12Z TAF UPDATE...INCREASING CONFIDENCE IN A LOW LEVEL JET
DEVELOPING BY MID DAY. WITH DIRECTIONAL AND SPEED SHEAR EXPECTED,
HAVE ADDED MENTION OF LLWS TO ALL TAFS FROM MID DAY UNTIL LATE
TONIGHT WHEN THE JET MOVES OFF SHORE. STILL NOT ENOUGH CONFIDENCE
IN TIMING OR COVERAGE OF THUNDERSTORMS TO INCLUDE MENTION IN THE
TAFS FOR NOW.
PREVIOUS AVIATION DISCUSSION....WIDESPREAD IFR CEILINGS ARE
EXPECTED FOR MUCH OF THE DAY. EXPECT SOME BREAKS IN THE SHRA,
ESPECIALLY THIS MORNING, BUT BY 18Z, EXPECT LOWERING CEILINGS AND
MORE WIDESPREAD SHRA. THERE REMAINS A SMALL RISK FOR TSRA FOR
TERMINALS NEAR AND SOUTH OF KPHL THROUGH THE DAY, AND ALL
TERMINALS AFTER 00Z. HOWEVER, COVERAGE IS EXPECTED TO BE VERY
LIMITED, SO HAVE NOT MENTIONED IN THE TAFS AT THIS TIME.
WINDS WILL BE BREEZY FOR MUCH OF THE TAF PERIOD. SLOWLY SHIFTING
FROM EASTERLY TO SOUTHEASTERLY THROUGH THE DAY.
DRIER AIR SHOULD BEGIN TO MOVE INTO THE REGION AFTER 06Z, SO EXPECT
SLOW IMPROVEMENT LATE TONIGHT.
OUTLOOK...
THURSDAY...IFR/MVFR IMPROVING TO VFR DURING THE AFTERNOON. SHOWERS
WILL CONTINUE, HOWEVER THEY SHOULD BECOME MORE SCATTERED AND A
THUNDERSTORM CANNOT BE RULED OUT. SOUTHWEST WINDS 10 TO 15 KNOTS,
BECOMING WEST-NORTHWEST AT NIGHT AND DIMINISHING SOME.
FRIDAY...OVERALL VFR. A FEW SHOWERS ARE POSSIBLE IN THE AFTERNOON
FROM NEAR KABE TO THE NORTH AND WEST. WEST-SOUTHWEST WINDS GENERALLY
10 TO 15 KNOTS.
SATURDAY AND SUNDAY...OVERALL VFR. SOME SHOWERS ARE POSSIBLE MAINLY
SATURDAY ESPECIALLY NORTH AND WEST OF KPHL AS A COLD FRONT MOVES
THROUGH.
&&
.MARINE...
HAVE OPTED TO EXTEND THE GALE WARNING ON THE NRN WATERS THROUGH
NOON. THINGS MAY COME DOWN A BIT SOONER, BUT HAVE BEEN SLOW TO DO
SO THIS MORNING.
PREVIOUS MARINE DISCUSSION...GALE GUSTS CONTINUE, SO HAVE KEPT THE
GALE WARNING GOING THROUGH 5 AM EDT. AFTER THAT, SCA CONDITIONS
FOR BOTH WINDS AND SEAS ARE EXPECTED TO CONTINUE ALL DAY TODAY AND
OVERNIGHT TONIGHT. ISOLATED GUSTS ABOVE 30KT WILL AGAIN BE
POSSIBLE THIS EVENING.
OUTLOOK...
THURSDAY..GUSTY SOUTHWESTERLY WINDS AHEAD OF A COLD FRONT TO START
SHOULD DIMINISH SOME THROUGH THE DAY, THEN SHIFT TO THE WEST AND
NORTHWEST AT NIGHT. THE SEAS ON THE OCEAN ARE FORECAST TO BE AT OR
ABOVE 5 FEET, THEREFORE SMALL CRAFT ADVISORY CONDITIONS ARE
ANTICIPATED. THE SEAS MAY DROP BELOW 5 FEET THOUGH LATER AT NIGHT.
FRIDAY THROUGH SUNDAY...THE CONDITIONS ARE ANTICIPATED TO BE BELOW
SMALL CRAFT ADVISORY CRITERIA. A COLD FRONT MOVING THROUGH LATE
SATURDAY AND SUNDAY LOOKS TO BE ON THE WEAKER SIDE, WITH MOSTLY A
WIND SHIFT.
&&
.HYDROLOGY...
SO FAR, RAIN HAS BEEN LIGHT AND/OR INTERMITTENT ENOUGH THAT WE
HAVEN'T SEEN ANY FLOODING ISSUES OR SIGNIFICANT RISES ON SMALL
STREAMS. HOWEVER, THE HEAVIEST RAIN IS EXPECTED THROUGH THE DAY
TODAY INTO THIS EVENING, SO THE FLOODING THREAT REMAINS. THE BIGGEST
CHANGE WITH THE PREVIOUS FORECAST IS THAT THE AXIS OF HIGHEST QPF
AND HEAVIEST RAINS LOOKS TO STAY WELL WEST OF THE I-95 CORRIDOR. AND
WITH THIS SHIFT FURTHER WEST, DAY 1 QPF FOR OUR REGION IS NOW
EXPECTED TO BE IN THE 1 TO 3 INCH RANGE. HOWEVER, AS HAS BEEN
MENTIONED BY PREVIOUS SHIFTS, THERE IS QUITE A BIT OF UNCERTAINTY AS
TO WHERE THE HEAVIEST RAIN WILL SET UP.
MUCH HIGHER THAN NORMAL PWAT VALUES, MOIST LOW LEVEL JET, AND A DEEP
WARM CLOUD LAYER WILL ALL BE IN PLACE LATER TODAY AS THE WARM FRONT
MOVES INTO OUR REGION. THUS, HAVE CONTINUED WITH THE FLOOD WATCH
GENERALLY FOR LOCATIONS ALONG AND WEST OF THE I-95 CORRIDOR.
FOR DETAILED INFORMATION REGARDING FLOOD POTENTIAL ALONG SPECIFIC
STREAMS AND RIVERS, PLEASE REFERENCE THE AHPS WEBSITE.
&&
.TIDES/COASTAL FLOODING...
WILL ISSUE A CF ADVISORY FOR DEL BAY AS LEVELS WILL BE CLOSE OR
SLIGHTLY OVER WITH THE AFTN HIGH TIDE.
PREVIOUS DISCUSSION...COASTAL FLOOD ADVISORIES REMAIN IN EFFECT
FOR THE TIDAL DELAWARE RIVER AND THE CHESAPEAKE BAY.
FOR THE MOST PART THE HIGH TIDE CYCLE THAT JUST HAPPENED SHOULD BE
THE HIGHEST TIDES WE WILL SEE THROUGH THIS STORM SYSTEM. THE
EXCEPTION TO THIS IS THE CHESAPEAKE BAY, WHICH MAY SEE COASTAL
FLOODING FOR THE NEXT 3 HIGH TIDE CYCLES, THANKS TO FLOW TURNING
MORE SOUTHERLY THROUGH THE DAY TODAY.
FOR THE ATLANTIC COASTAL, DELAWARE BAY, AND TIDAL DELAWARE RIVER
LOCATIONS, ADDITIONAL COASTAL FLOODING IS UNLIKELY, BUT FRESH WATER
RUNOFF FROM HEAVY RAIN TODAY COULD INCREASE THE POTENTIAL FOR MINOR
TIDAL FLOODING ESPECIALLY ALONG THE DELAWARE RIVER.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...FLOOD WATCH THROUGH THURSDAY MORNING FOR PAZ054-055-060>062-
070-071-101>106.
COASTAL FLOOD ADVISORY UNTIL 5 PM EDT THIS AFTERNOON FOR
PAZ070-071-106.
NJ...FLOOD WATCH THROUGH THURSDAY MORNING FOR NJZ001-007>010-012-
013-015>019.
COASTAL FLOOD ADVISORY UNTIL 5 PM EDT THIS AFTERNOON FOR
NJZ015>019.
DE...FLOOD WATCH THROUGH THURSDAY MORNING FOR DEZ001.
COASTAL FLOOD ADVISORY UNTIL 5 PM EDT THIS AFTERNOON FOR
DEZ001.
MD...FLOOD WATCH THROUGH THURSDAY MORNING FOR MDZ008-012.
COASTAL FLOOD ADVISORY UNTIL 11 PM EDT THIS EVENING FOR MDZ008-
012-015-019-020.
MARINE...SMALL CRAFT ADVISORY UNTIL 2 AM EDT THURSDAY FOR ANZ430-431-
452>455.
GALE WARNING UNTIL 4 PM EDT THIS AFTERNOON FOR ANZ450-451.
&&
SYNOPSIS...GORSE
NEAR TERM...JOHNSON/NIERENBERG
SHORT TERM...JOHNSON
LONG TERM...GORSE
AVIATION...GORSE/JOHNSON/NIERENBERG
MARINE...GORSE/JOHNSON/NIERENBERG
HYDROLOGY...
TIDES/COASTAL FLOODING...Hazardous weather outlook, Apr 30, 11:40 AM EDT, 1 hour 9 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1140 AM EDT WED APR 30 2014 NJZ001-007>010-012-013-015-PAZ054-055-061-062-105-011545- SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH- MERCER-CARBON-MONROE-LEHIGH-NORTHAMPTON-UPPER BUCKS- 1140 AM EDT WED APR 30 2014 ...FLOOD WATCH IN EFFECT THROUGH THURSDAY MORNING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...NORTHWEST NEW JERSEY...EAST CENTRAL PENNSYLVANIA...NORTHEAST PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. FLOOD WATCH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. FLOOD WATCH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. DEZ001-NJZ016>019-PAZ060-070-071-101>104-106-011545- NEW CASTLE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-BERKS- DELAWARE-PHILADELPHIA-WESTERN CHESTER-EASTERN CHESTER- WESTERN MONTGOMERY-EASTERN MONTGOMERY-LOWER BUCKS- 1140 AM EDT WED APR 30 2014 ...FLOOD WATCH IN EFFECT THROUGH THURSDAY MORNING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN DELAWARE...SOUTHERN NEW JERSEY...EAST CENTRAL PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. FLOOD WATCH. SOME STRONG THUNDERSTORMS TODAY COULD LOCALLY PRODUCE WIND GUSTS TO 45 MPH, ESPECIALLY THIS AFTERNOON AND THIS EVENING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. FLOOD WATCH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. MDZ015-019-020-011545- QUEEN ANNES-TALBOT-CAROLINE- 1140 AM EDT WED APR 30 2014 ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MARYLAND. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. COASTAL FLOOD ADVISORY. SOME STRONG THUNDERSTORMS TODAY COULD LOCALLY PRODUCE WIND GUSTS TO 45 MPH, ESPECIALLY THIS AFTERNOON AND THIS EVENING. SOME HEAVY RAIN AT TIMES TODAY AND TONIGHT MAY LEAD TO LOCAL POOR DRAINAGE FLOODING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. MDZ008-012-011545- CECIL-KENT MD- 1140 AM EDT WED APR 30 2014 ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING... ...FLOOD WATCH IN EFFECT THROUGH THURSDAY MORNING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MARYLAND. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. FLOOD WATCH. COASTAL FLOOD ADVISORY. SOME STRONG THUNDERSTORMS TODAY COULD LOCALLY PRODUCE WIND GUSTS TO 45 MPH, ESPECIALLY THIS AFTERNOON AND THIS EVENING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. FLOOD WATCH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. DEZ002>004-NJZ014-020>027-011545- KENT-INLAND SUSSEX-DELAWARE BEACHES-EASTERN MONMOUTH-OCEAN- CUMBERLAND-ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY- COASTAL ATLANTIC-COASTAL OCEAN-SOUTHEASTERN BURLINGTON- 1140 AM EDT WED APR 30 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...SOUTHERN DELAWARE...CENTRAL NEW JERSEY AND SOUTHERN NEW JERSEY. .DAY ONE...THIS AFTERNOON AND TONIGHT. SOME HEAVY RAIN AT TIMES TODAY AND TONIGHT MAY LEAD TO LOCAL POOR DRAINAGE FLOODING. SOME STRONG THUNDERSTORMS TODAY COULD LOCALLY PRODUCE WIND GUSTS TO 45 MPH, ESPECIALLY THIS AFTERNOON AND THIS EVENING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ450-451-011545- 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- 1140 AM EDT WED APR 30 2014 ...GALE WARNING IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. GALE WARNING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ430-431-452>455-011545- 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- 1140 AM EDT WED APR 30 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT. SOME STRONG THUNDERSTORMS TODAY COULD LOCALLY PRODUCE WIND GUSTS TO AROUND 35 KNOTS, ESPECIALLY THIS AFTERNOON AND THIS EVENING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Apr 30, 8:59 AM EDT, 3 hours 50 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
859 AM EDT WED APR 30 2014
DEZ001-MDZ008-012-PAZ101-102-301400-
CECIL MD-EASTERN CHESTER PA-KENT MD-NEW CASTLE DE-WESTERN CHESTER PA-
859 AM EDT WED APR 30 2014
...A THUNDERSTORM WILL AFFECT CECIL...SOUTHWESTERN CHESTER...WEST
CENTRAL NEW CASTLE AND WESTERN KENT COUNTIES...
AT 854 AM EDT...A THUNDERSTORM WAS 7 MILES SOUTHEAST OF BOWLEYS
QUARTERS...MOVING NORTHEAST AT 30 MPH.
WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THIS STORM.
VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND FILL POOR DRAINAGE AREAS. THE RAIN CAN CAUSE RAPID
RISES ON SMALL STREAMS AND CREEKS.
THIS STORM WILL BE NEAR NEWTOWN AROUND 910 AM...BETTERTON AROUND 920
AM...PERRYVILLE AROUND 940 AM...CALVERT AROUND 950 AM AND LOMBARD
AROUND 1000 AM.
LAT...LON 3927 7623 3930 7619 3932 7619 3943 7601
3946 7602 3952 7599 3955 7603 3955 7609
3957 7610 3957 7609 3956 7608 3957 7608
3972 7623 3973 7614 3977 7607 3990 7599
3971 7557 3913 7617 3918 7627
ROBERTSONThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 8:59 AM EDT | Special Weather Statement | PHI | Cecil, Kent | 61 min |
| Apr 30, 9:45 AM EDT | Areal Flood Advisory | PHI | Cecil, Kent | 3 hr |
| Apr 30, 1:16 PM EDT | Areal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 4 hr |
| Apr 30, 3:27 PM EDT | Special Weather Statement | PHI | Cecil, Kent | 108 min |
| Apr 30, 4:10 PM EDT | Areal Flood Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 9 hr |
| Apr 30, 4:16 PM EDT | Areal Flood Advisory | PHI | Caroline, Talbot | 6 hr |
| Apr 30, 4:44 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 46 min |
| Apr 30, 5:10 PM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's | 110 min |
| Apr 30, 6:03 PM EDT | Special Weather Statement | PHI | Cecil | 117 min |
| Apr 30, 10:08 AM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 3 hr |
| Apr 30, 12:37 PM EDT | River Flood Warning | PHI | New Castle | 15 hr |
| Apr 30, 3:54 PM EDT | River Flood Warning | PHI | New Castle | 16 hr |
| Apr 30, 4:00 PM EDT | River Flood Warning | PHI | New Castle | 18 hr |
| Apr 30, 6:29 PM EDT | River Flood Warning | PHI | New Castle | 28 hr |
| Apr 30, 11:06 AM EDT | Areal Flood Advisory | PHI | Bucks, Carbon, Lehigh, Monroe, Northampton | 3 hr |
| Apr 30, 1:35 PM EDT | Areal Flood Warning | PHI | Bucks, Carbon, Lehigh, Monroe, Northampton | 16 hr |
| Apr 30, 1:45 PM EDT | River Flood Warning | PHI | Chester | 39 hr |
| Apr 30, 1:52 PM EDT | River Flood Warning | PHI | Delaware | 16 hr |
| Apr 30, 2:07 PM EDT | Areal Flood Warning | PHI | Bucks | 22 hr |
| Apr 30, 3:15 PM EDT | River Flood Warning | PHI | Montgomery | 20 hr |
| Apr 30, 3:23 PM EDT | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 34 hr |
| Apr 30, 3:23 PM EDT | River Flood Warning | PHI | Montgomery, Philadelphia | 28 hr |
| Apr 30, 3:29 PM EDT | River Flood Warning | PHI | Chester, Delaware | 34 hr |
| Apr 30, 3:32 PM EDT | River Flood Warning | PHI | Bucks | 23 hr |
| Apr 30, 6:16 PM EDT | River Flood Warning | PHI | Montgomery | 20 hr |
Nearby
Areal Flood Warnings in Pennsylvania, 2014Areal Flood Warnings in Maryland, 2014Areal Flood Warnings in Delaware, 2014Every areal flood warning in 2014
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.