Alert archive / New Jersey / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 228, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 18, 2012, 5:13 PM EDT for Morris County, Sussex County, Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania. It was in force for 62 min. 1 report 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
- Sep 18, 2012, 5:13 PM EDT (21:13 UTC)
- Expired
- Sep 18, 2012, 6:15 PM EDT
- In force
- 62 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 124 km from the middle of the area, began a volume at 21:16 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 |
|---|---|---|---|
| Sep 18, 5:55 PM EDT | TSTM WND DMG | Vernon Twp, NJ | TREES AND WIRES DOWN THROUGHOUT THE COUNTY |
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 |
|---|---|---|---|
| Sep 18, 12:10 PM EDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.2 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.
- Mixed-layer CAPE
- 114 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 721 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 224 m²/s²
- 0-3 km storm-relative helicity
- 267 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
322
WUUS51 KPHI 182113
SVRPHI
NJC027-037-041-PAC089-095-182215-
/O.NEW.KPHI.SV.W.0228.120918T2113Z-120918T2215Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
513 PM EDT TUE SEP 18 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
EAST CENTRAL MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
NORTHERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
THIS INCLUDES THE CITY OF NEWTON...
WARREN COUNTY IN NORTHWEST NEW JERSEY...
* UNTIL 615 PM EDT
* AT 511 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM FLATBROOKVILLE TO ROXBURG...OR ALONG A LINE EXTENDING FROM 12
MILES WEST OF NEWTON TO 8 MILES NORTHEAST OF EASTON...AND MOVING
NORTHEAST AT 45 MPH.
THE STRONGEST WINDS MAY OCCUR NEAR THE LEADING EDGE OF THE LINE.
* SEVERE THUNDERSTORMS WILL BE NEAR...
PLEASANT VALLEY...HOPE...OXFORD AND BRASS CASTLE AROUND 520 PM
EDT...
CRANDON LAKES...WASHINGTON AND FIVE POINTS AROUND 525 PM EDT...
GREAT MEADOWS AND GREAT MEADOWS-VIENNA AROUND 530 PM EDT...
BRANCHVILLE AROUND 535 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS LINE OF STORMS MAY CONTAIN LITTLE OR NO LIGHTNING. DO NOT WAIT
TO HEAR 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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM EDT TUESDAY EVENING
FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND EASTERN
PENNSYLVANIA.
&&
LAT...LON 4121 7437 4109 7450 4104 7450 4105 7445
4102 7443 4100 7430 4094 7428 4075 7484
4079 7489 4071 7497 4065 7516 4115 7513
4115 7508 4109 7502 4116 7491 4132 7480
4136 7471
TIME...MOT...LOC 2113Z 263DEG 28KT 4109 7496 4076 7508
$$
GORSE1 follow-up statement
450
WWUS51 KPHI 182144
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
544 PM EDT TUE SEP 18 2012
PAC089-095-182153-
/O.CAN.KPHI.SV.W.0228.000000T0000Z-120918T2215Z/
MONROE PA-NORTHAMPTON PA-
544 PM EDT TUE SEP 18 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NORTHAMPTON AND
EAST CENTRAL MONROE COUNTIES IS CANCELLED...
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM EDT TUESDAY EVENING
FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND EASTERN
PENNSYLVANIA.
LAT...LON 4122 7438 4110 7450 4104 7450 4105 7445
4102 7442 4100 7430 4094 7428 4075 7484
4079 7489 4071 7498 4068 7507 4132 7480
4136 7472 4135 7469
TIME...MOT...LOC 2143Z 257DEG 24KT 4128 7462 4071 7493
$$
NJC027-037-041-182215-
/O.CON.KPHI.SV.W.0228.000000T0000Z-120918T2215Z/
WARREN NJ-MORRIS NJ-SUSSEX NJ-
544 PM EDT TUE SEP 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR SUSSEX...NORTHERN MORRIS AND EASTERN WARREN COUNTIES...
AT 541 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM HIGH POINT TO WASHINGTON...OR ALONG A LINE EXTENDING
FROM 17 MILES NORTH OF NEWTON TO 14 MILES EAST OF EASTON...MOVING
NORTHEAST AT 45 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
SUSSEX AND ANDOVER BY 550 PM EDT...
LAKE MOHAWK AND BUDD LAKE BY 555 PM EDT...
STANHOPE...OGDENSBURG...NETCONG AND LONG VALLEY BY 600 PM EDT...
VERNON VALLEY AND MOUNT ARLINGTON BY 605 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS LINE OF STORMS 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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM EDT TUESDAY EVENING
FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND EASTERN
PENNSYLVANIA.
&&
LAT...LON 4122 7438 4110 7450 4104 7450 4105 7445
4102 7442 4100 7430 4094 7428 4075 7484
4079 7489 4071 7498 4068 7507 4132 7480
4136 7472 4135 7469
TIME...MOT...LOC 2143Z 257DEG 39KT 4128 7462 4071 7493
$$
GORSEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 8:54 PM EDT | Rip Current Statement | PHI | Atlantic, Cape May, Monmouth, Ocean | 23 hr |
| Sep 18, 4:13 AM EDT | Coastal Flood Advisory | PHI | Burlington, Camden, Gloucester, Salem | 21 hr |
| Sep 18, 4:21 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 69 min |
| Sep 18, 4:23 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 52 min |
| Sep 18, 4:26 PM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 3 hr |
| Sep 18, 5:01 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 59 min |
| Sep 18, 5:12 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Warren | 63 min |
| Sep 18, 5:12 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 78 min |
| Sep 18, 5:23 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 52 min |
| Sep 18, 6:00 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 3 more | 60 min |
| Sep 18, 6:02 PM EDT | Special Marine Warning | PHI | 88 min | |
| Sep 18, 6:06 PM EDT | Areal Flood Advisory | PHI | Burlington, Hunterdon, Mercer, Middlesex, Morris, Somerset and 2 more | 54 min |
| Sep 18, 6:46 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem | 119 min |
| Sep 18, 6:52 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth, Morris, Somerset | 53 min |
| Sep 18, 6:54 PM EDT | Areal Flood Advisory | PHI | Burlington, Mercer, Middlesex, Monmouth, Morris, Ocean and 1 more | 111 min |
| Sep 18, 7:04 PM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Cumberland | 56 min |
| Sep 18, 7:16 PM EDT | Areal Flood Advisory | PHI | Cape May | 59 min |
| Sep 18, 7:51 PM EDT | Special Weather Statement | PHI | Atlantic, Cape May, Ocean | 54 min |
| Sep 18, 7:52 PM EDT | Special Marine Warning | PHI | 77 min | |
| Sep 18, 7:56 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Cape May, Ocean | 64 min |
| Sep 18, 12:58 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 93 min |
| Sep 18, 12:59 PM EDT | Special Weather Statement | PHI | Berks, Lehigh | 46 min |
| Sep 18, 1:05 PM EDT | Areal Flood Advisory | PHI | Berks, Lehigh | 115 min |
| Sep 18, 1:32 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 43 min |
| Sep 18, 2:00 PM EDT | Special Weather Statement | PHI | Chester, Montgomery | 60 min |
| Sep 18, 2:18 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 57 min |
| Sep 18, 2:23 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 30 min |
| Sep 18, 2:25 PM EDT | Flash Flood Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 4 hr |
| Sep 18, 2:52 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Northampton | 17 min |
| Sep 18, 3:07 PM EDT | Areal Flood Warning | PHI | Berks, Lehigh | 8 hr |
| Sep 18, 3:16 PM EDT | Special Weather Statement | PHI | Monroe | 59 min |
| Sep 18, 3:24 PM EDT | Special Weather Statement | PHI | Berks, Carbon | 51 min |
| Sep 18, 3:52 PM EDT | Special Weather Statement | PHI | Chester | 53 min |
| Sep 18, 4:05 PM EDT | Areal Flood Advisory | PHI | Berks, Lehigh | 55 min |
| Sep 18, 4:19 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Delaware, Montgomery | 56 min |
| Sep 18, 4:35 PM EDT | Areal Flood Advisory | PHI | Bucks, Chester, Lehigh, Montgomery | 55 min |
| Sep 18, 6:19 PM EDT | Areal Flood Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 16 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2012Severe Thunderstorm Warnings in Pennsylvania, 2012Every severe thunderstorm warning in 2012
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.