Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 201, NWS Philadelphia/Mount Holly

July 26, 2011Morris County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 26, 2011, 7:50 PM EDT for Morris County, New Jersey. It was in force for 25 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
Jul 26, 2011, 7:50 PM EDT (23:50 UTC)
Expired
Jul 26, 2011, 8:15 PM EDT
In force
25 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

County Morris County, NJ

The radar

The Philadelphia radar (KDIX), 112 km from the middle of the area, began a volume at 23:50 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.8 hours before the alert went out and 129 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, Brookhaven, NY at 12:00Z on 2011-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 76 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2011-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.19395878Sfc1 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
76 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
509 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
70 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.

997 
WUUS51 KPHI 262350
SVRPHI
NJC027-270045-
/O.NEW.KPHI.SV.W.0201.110726T2350Z-110727T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
750 PM EDT TUE JUL 26 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN MORRIS COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 845 PM EDT

* AT 746 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR LAKE TELEMARK...OR 13 MILES
  NORTH OF MORRISTOWN...AND MOVING EAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  PEQUANNOCK TOWNSHIP...RIVERDALE...BUTLER AND 9 MILES NORTH OF EAST
  HANOVER AROUND 755 PM EDT...
  LINCOLN PARK AROUND 800 PM EDT...

THE STRONGEST WINDS MAY OCCUR ALONG THE LEADING EDGE OF THE STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 4089 7433 4086 7431 4081 7433 4090 7467
      4108 7451 4107 7449 4104 7449 4105 7444
      4102 7442 4101 7432 4097 7427 4092 7428
      4089 7427
TIME...MOT...LOC 2350Z 286DEG 40KT 4096 7441

$$

GORSE
2 follow-up statements
415 
WWUS51 KPHI 270005
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
805 PM EDT TUE JUL 26 2011

NJC027-270045-
/O.CON.KPHI.SV.W.0201.000000T0000Z-110727T0045Z/
MORRIS NJ-
805 PM EDT TUE JUL 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR NORTHEASTERN MORRIS COUNTY...

AT 803 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR EAST HANOVER...OR 9 
MILES NORTHEAST OF MORRISTOWN...MOVING EAST AT 50 MPH. THE STRONGEST 
WINDS MAY OCCUR ALONG THE LEADING EDGE OF THE STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS SEVERE THUNDERSTORM MAY CONTAIN LITTLE OR NO LIGHTNING. DO NOT
WAIT FOR THUNDER BEFORE TAKING COVER. SEEK SHELTER IMMEDIATELY INSIDE
A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 4089 7433 4086 7431 4081 7433 4085 7449
      4102 7440 4101 7432 4097 7427 4092 7428
      4089 7427
TIME...MOT...LOC 0005Z 283DEG 43KT 4086 7431

$$

GORSE
288 
WWUS51 KPHI 270015
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
815 PM EDT TUE JUL 26 2011

NJC027-270025-
/O.CAN.KPHI.SV.W.0201.000000T0000Z-110727T0045Z/
MORRIS NJ-
815 PM EDT TUE JUL 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MORRIS COUNTY IS
CANCELLED...

THE STORM THE PROMPTED THE WARNING HAS QUICKLY MOVED EAST AND OUT OF 
THE AREA. THEREFORE, THE WARNING HAS BEEN CANCELLED.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 4089 7433 4086 7431 4081 7433 4085 7449
      4102 7440 4101 7432 4097 7427 4092 7428
      4089 7427
TIME...MOT...LOC 0015Z 283DEG 43KT 4083 7416

$$

GORSE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 5:55 PM EDTSevere Thunderstorm WarningPHISussex, Warren35 min
Jul 26, 6:23 PM EDTSpecial Weather StatementPHIMorris52 min
Jul 26, 6:28 PM EDTSpecial Weather StatementPHISussex62 min
Jul 26, 7:06 PM EDTSpecial Weather StatementPHISussex54 min
Jul 26, 7:38 PM EDTSpecial Weather StatementPHIMorris52 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2011Every severe thunderstorm warning in 2011

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.