Alert archive / Pennsylvania / Areal Flood Advisories in 2009
Areal Flood Advisory 30, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Jul 11, 2009, 9:05 PM EDT for 4 counties in Pennsylvania. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jul 11, 2009, 9:05 PM EDT (01:05 UTC)
- Expired
- Jul 12, 2009, 1:00 AM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 134 km from the middle of the area, began a volume at 01:04 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
Brookhaven, NY (KOKX), launched 00:00Z, 1.1 hours before the alert went out and 221 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
- 1227 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 206 m²/s²
- 0-3 km storm-relative helicity
- 246 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood advisory 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 advisory went out at Jul 11, 3:28 PM EDT, 5 hours 37 minutes earlier.
Area forecast discussion, Jul 11, 3:28 PM EDT, 5 hours 37 minutes before
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</html>Hazardous weather outlook, Jul 11, 4:54 AM EDT, 16 hours 11 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 454 AM EDT SAT JUL 11 2009 DEZ001>003-MDZ008-012-015-019-020-NJZ001-007>010-012-013-015>023-027- PAZ054-055-060>062-067>071-120900- NEW CASTLE-KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT- CAROLINE-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX- WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY- SOUTHEASTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 454 AM EDT SAT JUL 11 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...NORTHERN DELAWARE...SOUTHERN DELAWARE...NORTHEAST MARYLAND...CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...NORTHWEST NEW JERSEY...SOUTHERN NEW JERSEY...EAST CENTRAL PENNSYLVANIA...NORTHEAST PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. SOME THUNDERSTORMS ARE FORECAST TO DEVELOP LATE THIS AFTERNOON OVER THE POCONOS AND LEHIGH VALLEY THEN MOVE TOWARD THE COAST AROUND MIDNIGHT. SOME STORMS MAY BECOME LOCALLY STRONG WITH GUSTY WINDS AND FREQUENT CLOUD TO GROUND LIGHTNING THE MAIN THREATS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. DEZ004-NJZ014-024>026-120900- DELAWARE BEACHES-EASTERN MONMOUTH-ATLANTIC COASTAL CAPE MAY- COASTAL ATLANTIC-COASTAL OCEAN- 454 AM EDT SAT JUL 11 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN DELAWARE...CENTRAL NEW JERSEY AND SOUTHERN NEW JERSEY. .DAY ONE...TODAY AND TONIGHT. THERE IS A MODERATE RISK OF RIP CURRENTS TODAY. SOME THUNDERSTORMS ARE FORECAST TO DEVELOP LATER THIS EVENING. SOME STORMS MAY BECOME LOCALLY STRONG WITH GUSTY WINDS AND FREQUENT CLOUD TO GROUND LIGHTNING THE MAIN THREATS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ450>455-120900- 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- 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- 454 AM EDT SAT JUL 11 2009 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 8 AM EDT SUNDAY... 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. SOME THUNDERSTORMS ARE FORECAST TO DEVELOP LATER THIS EVENING. SOME STORMS MAY BECOME LOCALLY STRONG WITH GUSTY WINDS AND FREQUENT CLOUD TO GROUND LIGHTNING THE MAIN THREATS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SMALL CRAFT ADVISORY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ431-120900- DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE- 454 AM EDT SAT JUL 11 2009 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 8 AM EDT SUNDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR 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. SOME THUNDERSTORMS ARE FORECAST TO DEVELOP LATER THIS EVENING. SOME STORMS MAY BECOME LOCALLY STRONG WITH GUSTY WINDS AND FREQUENT CLOUD TO GROUND LIGHTNING THE MAIN THREATS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SMALL CRAFT ADVISORY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ430-120900- DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE- 454 AM EDT SAT JUL 11 2009 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 8 AM EDT SUNDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR 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. SOME THUNDERSTORMS ARE FORECAST TO DEVELOP LATER THIS EVENING. SOME STORMS MAY BECOME LOCALLY STRONG WITH GUSTY WINDS AND FREQUENT CLOUD TO GROUND LIGHTNING THE MAIN THREATS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SMALL CRAFT ADVISORY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Jul 11, 3:42 PM EDT, 5 hours 23 minutes before
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</html>Special weather statement, Jul 11, 4:31 PM EDT, 4 hours 34 minutes before
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</html>Special weather statement, Jul 11, 7:05 PM EDT, 2 hours before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 705 PM EDT SAT JUL 11 2009 NJZ001-007-008-PAZ054-055-060>062-120100- BERKS PA-CARBON PA-LEHIGH PA-MONROE PA-MORRIS NJ-NORTHAMPTON PA- SUSSEX NJ-WARREN NJ- 705 PM EDT SAT JUL 11 2009 ...SHOWERS AND SCATTERED THUNDERSTORMS... ADDITIONAL SHOWERS AND SCATTERED THUNDERSTORMS FROM THE WEST SHOULD AFFECT PARTS OF BERKS COUNTY, THE LEHIGH VALLEY, THE POCONOS AND NORTHERN NEW JERSEY BEFORE 900 PM. SOME LOCATIONS MAY EXPERIENCE A PERIOD OF HEAVY RAIN THAT COULD RESULT IN PONDING OF WATER ON ROADWAYS AND IN AREAS OF POOR DRAINAGE. WIND GUSTS TO 35 MPH AND SMALL HAIL ARE ALSO POSSIBLE. IOVINO
Special weather statement, Jul 11, 8:30 PM EDT, 35 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 830 PM EDT SAT JUL 11 2009 NJZ001-007-008-PAZ054-055-060>062-120200- BERKS PA-CARBON PA-LEHIGH PA-MONROE PA-MORRIS NJ-NORTHAMPTON PA- SUSSEX NJ-WARREN NJ- 830 PM EDT SAT JUL 11 2009 ...SHOWERS AND SCATTERED THUNDERSTORMS... THROUGH MIDNIGHT, SHOWERS AND SCATTERED THUNDERSTORMS FROM THE WEST WILL MOVE ACROSS PARTS OF BERKS COUNTY, THE LEHIGH VALLEY, THE POCONOS AND NORTHERN NEW JERSEY. SOME LOCATIONS MAY EXPERIENCE A PERIOD OF HEAVY RAIN THAT COULD RESULT IN PONDING OF WATER ON ROADWAYS AND IN AREAS OF POOR DRAINAGE. WIND GUSTS TO 35 MPH AND SMALL HAIL ARE ALSO POSSIBLE. IOVINO
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 12:46 AM EDT | Special Marine Warning | PHI | 89 min | |
| Jul 12, 2:07 AM EDT | Special Marine Warning | PHI | 83 min | |
| Jul 12, 1:04 AM EDT | Areal Flood Warning | PHI | Chester | 3 hr |
| Jul 12, 1:19 AM EDT | Areal Flood Warning | PHI | Philadelphia | 3 hr |
Nearby
Areal Flood Advisories in Pennsylvania, 2009Every areal flood advisory in 2009
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.