Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 278, NWS Philadelphia/Mount Holly

December 1, 2006Monroe County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Dec 1, 2006, 4:49 PM EST for Monroe County, Northampton County, Pennsylvania. It was in force for 71 min. 7 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: Dec 1, 2006, 4:49 PM EST (21:49 UTC)
Expired: Dec 1, 2006, 6:00 PM EST
In force: 71 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

Counties Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 138 km from the middle of the area, began a volume at 21:50 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
Dec 1, 4:50 PM EST	NON-TSTM WND GST 48	Mount Pocono, PA	A 48 MPH WIND GUST WAS MEASURED AT THE MOUNT POCONO AIRPORT.
Dec 1, 5:30 PM EST	TSTM WND DMG	Mount Pocono, PA	POWER LINES DOWN, KNOCKING OUT POWER.
Dec 1, 5:30 PM EST	TSTM WND DMG	Pocono Pines, PA	TREE KNOCKED DOWN WHICH FELL ONTO A CAR.
Dec 1, 5:32 PM EST	TSTM WND GST 51	Mount Pocono, PA	A 51 MPH WIND GUST WAS MEASURED AT THE MOUNT POCONO AIRPORT.
Dec 1, 5:35 PM EST	TSTM WND GST 62	5 Nnw Northampton, PA	A 62 MPH THUNDERSTORM WIND GUST WAS REPORTED IN LEHIGH TOWNSHIP.
Dec 1, 5:49 PM EST	TSTM WND DMG	3 Ssw Brodheadsville, PA	TREE REPORTED DOWN AND BLOCKING THE ROAD ON HIGHWAY 33 SOUTH IN SAYLORSBURG.
Dec 1, 6:00 PM EST	TSTM WND DMG	Ne East Bangor, PA	TREES AND WIRES REPORTED DOWN IN UPPER MOUNT BETHEL TOWNSHIP.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Dec 1, 3:24 PM EST	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.8 hours before the alert went out and 180 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 966 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: -103 m²/s²
0-3 km storm-relative helicity: 9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 012150
SVRPHI
PAC089-095-012300-
/O.NEW.KPHI.SV.W.0278.061201T2149Z-061201T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
449 PM EST FRI DEC 1 2006

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
  MONROE COUNTY IN NORTHEAST PENNSYLVANIA...

* UNTIL 600 PM EST

* AT 446 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS LINE EXTENDED FROM 36 MILES WEST OF
  BRODHEADSVILLE...OR ABOUT 26 MILES SOUTHWEST OF WILKES-BARRE
  TO NEAR POTTSVILLE...AND  MOVING EAST AT 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  POCONO PINES BY 520 PM EST...
  MOUNT POCONO BY 525 PM EST...
  MOUNTAINHOME AND 9 MILES NORTH OF EAST STROUDSBURG BY 530 PM EST...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 4126 7518 4117 7565 4096 7553 4082 7547
      4077 7559 4058 7525 4084 7512 4098 7515
      4113 7500

$$

NIERENBERG

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 1, 3:54 AM EST	High Wind Warning	PHI	Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more	21 hr
Dec 1, 3:54 AM EST	Wind Advisory	PHI	Delaware, Philadelphia	21 hr
Dec 1, 4:27 PM EST	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh	78 min
Dec 1, 5:07 PM EST	Tornado Warning	PHI	Monroe	38 min
Dec 1, 5:45 PM EST	Severe Thunderstorm Warning	PHI	Lehigh, Northampton	42 min
Dec 1, 5:55 PM EST	Tornado Warning	PHI	Northampton	35 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2006 Every severe thunderstorm warning in 2006

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.