Alert archive / Pennsylvania / Special Weather Statements in 2010

Special Weather Statement, NWS Philadelphia/Mount Holly

June 13, 2010Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Jun 13, 2010, 6:04 PM EDT for Philadelphia County, Pennsylvania. It was in force for 61 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: Jun 13, 2010, 6:04 PM EDT (22:04 UTC)
Expired: Jun 13, 2010, 7:05 PM EDT
In force: 61 min
Issued by: NWS Philadelphia/Mount Holly

County Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 37 km from the middle of the area, began a volume at 22:04 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 12:00Z, 10.1 hours before the alert went out and 188 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 26 J/kg
Mixed-layer CIN: -247 J/kg
Mixed-layer LCL: 594 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

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 Jun 13, 3:01 PM EDT, 3 hours 3 minutes earlier.

Area forecast discussion, Jun 13, 3:01 PM EDT, 3 hours 3 minutes before

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Hazardous weather outlook, Jun 13, 2:48 PM EDT, 3 hours 16 minutes before

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In the hours before

Special weather statement, Jun 13, 3:16 PM EDT, 2 hours 48 minutes before

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Special weather statement, Jun 13, 3:27 PM EDT, 2 hours 37 minutes before

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Special weather statement, Jun 13, 3:44 PM EDT, 2 hours 20 minutes before

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Special weather statement, Jun 13, 4:59 PM EDT, 1 hour 5 minutes before

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Special weather statement, Jun 13, 5:09 PM EDT, 55 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
509 PM EDT SUN JUN 13 2010

NJZ023-024-132155-
ATLANTIC COASTAL CAPE MAY NJ-CAPE MAY NJ-
509 PM EDT SUN JUN 13 2010

...A STRONG THUNDERSTORM WILL AFFECT CAPE MAY COUNTY...

AT 502 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 10 MILES NORTHWEST OF CAPE MAY...MOVING EAST AT
20 MPH. THE THUNDERSTORM WILL BE NEAR VILLAS...NORTH CAPE MAY AROUND
515 PM...ERMA...RIO GRANDE AROUND 530 PM...WILDWOOD CREST AND
WILDWOOD AROUND 545 PM.

VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.

WIND GUSTS TO NEAR 35 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.

LAT...LON 3892 7498 3899 7498 3912 7490 3908 7472
      3905 7474 3902 7477 3902 7479 3899 7479
      3895 7484 3892 7495 3892 7497

RPW

Special weather statement, Jun 13, 6:04 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
604 PM EDT SUN JUN 13 2010

NJZ019-PAZ068-069-071-132305-
BUCKS PA-MONTGOMERY PA-NORTHWESTERN BURLINGTON NJ-PHILADELPHIA PA-
604 PM EDT SUN JUN 13 2010

...A STRONG THUNDERSTORM WILL AFFECT BUCKS...BURLINGTON...MONTGOMERY
AND PHILADELPHIA COUNTIES...

AT 600 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 12 MILES NORTHEAST OF PHILADELPHIA...MOVING
SOUTHEAST AT 20 TO 25 MPH. THE THUNDERSTORM WILL BE NEAR WISSINOMING
AROUND 605 PM...CROYDON...BENSALEM AROUND 615 PM...BURLINGTON...
WILLINGBORO AROUND 630 PM...MOUNT HOLLY AND PEMBERTON HEIGHTS AROUND
645 PM.

VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.

WIND GUSTS TO NEAR 35 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.

LAT...LON 4003 7456 3981 7482 4010 7519 4034 7497

RPW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 9:54 PM EDT	Special Weather Statement	PHI	Sussex	2 hr
Jun 13, 1:01 PM EDT	Special Weather Statement	PHI	Hunterdon	89 min
Jun 13, 1:39 PM EDT	Special Weather Statement	PHI	Camden	61 min
Jun 13, 1:48 PM EDT	Special Weather Statement	PHI	Sussex	62 min
Jun 13, 2:06 PM EDT	Special Weather Statement	PHI	Camden, Gloucester	59 min
Jun 13, 2:19 PM EDT	Special Weather Statement	PHI	Atlantic	46 min
Jun 13, 2:58 PM EDT	Special Weather Statement	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	2 hr
Jun 13, 3:16 PM EDT	Special Weather Statement	PHI	Burlington	74 min
Jun 13, 3:27 PM EDT	Special Weather Statement	PHI	Gloucester	78 min
Jun 13, 5:09 PM EDT	Special Weather Statement	PHI	Cape May	46 min
Jun 13, 6:29 PM EDT	Special Weather Statement	PHI	Camden, Gloucester, Salem	61 min
Jun 12, 8:20 PM EDT	Special Weather Statement	PHI	Carbon, Northampton	85 min
Jun 13, 2:14 PM EDT	Special Weather Statement	PHI	Bucks	61 min
Jun 13, 4:59 PM EDT	Special Weather Statement	PHI	Bucks, Montgomery	61 min
Jun 13, 6:34 PM EDT	Special Weather Statement	PHI	Berks	56 min
Jun 13, 3:44 PM EDT	Special Weather Statement	PHI	Caroline, Kent, Queen Anne's	91 min

Nearby

Special Weather Statements in Pennsylvania, 2010 Every 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.