Alert archive / Pennsylvania / Special Weather Statements in 2010

Special Weather Statement, NWS Philadelphia/Mount Holly

September 28, 2010Warren County, New Jersey; 4 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Sep 28, 2010, 12:06 PM EDT for Warren County, New Jersey; 4 counties in Pennsylvania. It was in force for 54 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 28, 2010, 12:06 PM EDT (16:06 UTC)
Expired
Sep 28, 2010, 1:00 PM EDT
In force
54 min
Issued by
NWS Philadelphia/Mount Holly

Counties Warren County, NJ, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 123 km from the middle of the area, began a volume at 16:06 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, 4.1 hours before the alert went out and 156 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.

Skew-T log-pSkew-T log-p diagram, Phillips Aaf/Abe, MD at 12:00Z on 2010-09-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 246 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2010-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 288 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
246 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
729 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
288 m²/s²
0-3 km storm-relative helicity
308 m²/s²
Significant tornado parameter
0.4
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Sep 28, 11:22 AM EDT, 44 minutes earlier.

Area forecast discussion, Sep 28, 11:22 AM EDT, 44 minutes before
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Hazardous weather outlook, Sep 28, 11:24 AM EDT, 42 minutes before
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In the hours before

Special weather statement, Sep 28, 9:59 AM EDT, 2 hours 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
959 AM EDT TUE SEP 28 2010

DEZ001-MDZ008-NJZ007-009-PAZ060>062-067>070-281500-
BERKS PA-BUCKS PA-CECIL MD-CHESTER PA-DELAWARE PA-HUNTERDON NJ-
LEHIGH PA-MONTGOMERY PA-NEW CASTLE DE-NORTHAMPTON PA-WARREN NJ-
959 AM EDT TUE SEP 28 2010

...SHOWERS WITH STRONG WIND GUSTS WILL AFFECT CECIL...WARREN...
HUNTERDON...DELAWARE...CHESTER...MONTGOMERY...BERKS...LEHIGH...
NORTHAMPTON...BUCKS AND NEW CASTLE COUNTIES...

AT 954 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SHOWERS WITH STRONG WIND GUSTS ALONG A LINE EXTENDING FROM 2 MILES
WEST OF NEWARK TO 15 MILES WEST OF ELKTON...MOVING NORTHEAST AT 45
MPH. THE SHOWERS WILL BE NEAR ASHLAND...MOUNT VERNON...GLEN ROY...
WEST GROVE AROUND 1005 AM...HOMEVILLE AROUND 1010 AM...WEST
GOSHEN...WESTTOWN...COCHRANVILLE...WEST CHESTER AROUND 1015 AM AND
MALVERN AROUND 1020 AM.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THESE SHOWERS.

LAT...LON 3974 7613 3978 7607 3985 7603 3987 7601
      3990 7601 4061 7548 4065 7516 4071 7494
      3970 7570 3964 7590 3961 7615 3966 7619

HAYES
Special weather statement, Sep 28, 10:01 AM EDT, 2 hours 5 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1001 AM EDT TUE SEP 28 2010

PAZ054-055-061-062-281500-
CARBON PA-LEHIGH PA-MONROE PA-NORTHAMPTON PA-
1001 AM EDT TUE SEP 28 2010

...SHOWERS WITH STRONG WIND GUSTS WILL AFFECT LEHIGH...
NORTHAMPTON...CARBON AND MONROE COUNTIES...

AT 1000 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SHOWERS WITH STRONG WIND GUSTS 16 MILES SOUTHWEST OF LEHIGHTON...
MOVING NORTHEAST AT 45 MPH. THE SHOWERS WILL BE NEAR SUMMIT HILL...
EMERALD...SLATINGTON...WALNUTPORT AROUND 1015 AM...JIM THORPE...
LEHIGHTON...WEISSPORT...WEISSPORT EAST AROUND 1020 AM...BELTZVILLE
STATE PARK AND WEATHERLY AROUND 1025 AM.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THESE SHOWERS.

LAT...LON 4124 7513 4116 7516 4115 7509 4113 7507
      4063 7538 4084 7590 4099 7582 4101 7575
      4105 7579 4111 7576 4114 7570 4113 7564
      4123 7554 4125 7550 4126 7514

HAYES
Special weather statement, Sep 28, 10:17 AM EDT, 1 hour 49 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1017 AM EDT TUE SEP 28 2010

DEZ001-002-MDZ008-012-015-PAZ067-281515-
CECIL MD-CHESTER PA-KENT MD-KENT DE-NEW CASTLE DE-QUEEN ANNE'S MD-
1017 AM EDT TUE SEP 28 2010

...A SHOWER WITH STRONG WIND GUSTS WILL AFFECT KENT...CECIL...
CHESTER...QUEEN ANNE'S AND NEW CASTLE COUNTIES...

AT 1013 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SHOWER WITH STRONG WIND GUSTS 14 MILES NORTHEAST OF CENTERVILLE...
MOVING NORTH AT 50 MPH. THE SHOWER WILL BE NEAR GALENA...MASSEY...
DELANEY CORNER AROUND 1025 AM...CECILTON...SASSAFRAS AROUND 1030
AM...BOHEMIAS MILLS...WARWICK...CAYOTS...MIDDLETOWN AROUND 1035 AM
AND CHESAPEAKE CITY AROUND 1040 AM.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS SHOWER.

LAT...LON 3973 7611 3987 7599 3992 7601 4003 7595
      4011 7594 4026 7566 4020 7556 4013 7551
      4007 7537 3999 7545 3987 7562 3984 7559
      3980 7542 3962 7560 3959 7559 3959 7555
      3913 7585 3920 7607 3972 7585 3973 7614

HAYES
Special weather statement, Sep 28, 10:41 AM EDT, 1 hour 25 minutes before
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Local storm report, Sep 28, 11:55 AM EDT, 11 minutes before
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Special weather statement, Sep 28, 12:06 PM EDT, 0 minutes before
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The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 28, 12:45 AM EDTSpecial Weather StatementPHIMercer30 min
Sep 28, 7:39 AM EDTSpecial Weather StatementPHIHunterdon, Somerset, Warren66 min
Sep 28, 3:51 PM EDTSpecial Weather StatementPHIHunterdon, Morris, Somerset, Sussex, Warren84 min
Sep 28, 5:05 PM EDTSpecial Weather StatementPHIMorris, Sussex40 min
Sep 28, 8:35 AM EDTSpecial Weather StatementPHIBerks55 min
Sep 28, 9:26 AM EDTSpecial Weather StatementPHIChester64 min
Sep 28, 9:29 AM EDTSpecial Weather StatementPHIBerks61 min
Sep 28, 9:59 AM EDTSpecial Weather StatementPHIChester, Montgomery61 min
Sep 28, 10:01 AM EDTSpecial Weather StatementPHICarbon, Monroe, Northampton59 min
Sep 28, 10:05 AM EDTSevere Thunderstorm WarningPHIBerks, Chester, Lehigh, Montgomery55 min
Sep 28, 10:17 AM EDTSpecial Weather StatementPHIChester58 min
Sep 28, 11:15 AM EDTSevere Thunderstorm WarningPHIChester, Delaware45 min
Sep 28, 1:23 PM EDTSpecial Weather StatementPHICarbon, Lehigh, Monroe, Northampton52 min
Sep 28, 6:13 AM EDTSpecial Weather StatementPHICecil, Kent, Queen Anne's, Talbot47 min
Sep 28, 7:02 AM EDTSpecial Weather StatementPHICaroline58 min
Sep 28, 8:26 AM EDTSpecial Weather StatementPHIQueen Anne's, Talbot64 min
Sep 28, 8:47 AM EDTSpecial Weather StatementPHICecil, Kent58 min
Sep 28, 9:13 AM EDTTornado WarningPHICaroline, Kent, Queen Anne's, Talbot32 min
Sep 28, 9:44 AM EDTTornado WarningPHICecil, Kent, Queen Anne's, Talbot31 min
Sep 28, 10:22 AM EDTSevere Thunderstorm WarningPHICecil, Kent, Queen Anne's53 min
Sep 28, 10:41 AM EDTSpecial Weather StatementPHICaroline64 min
Sep 28, 7:33 AM EDTSpecial Weather StatementPHIKent, New Castle57 min

Nearby

Special Weather Statements in Pennsylvania, 2010Special Weather Statements in New Jersey, 2010Every special weather statement in 2010

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.