Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 42, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 12, 2015, 7:27 PM EDT for Northampton County, Pennsylvania; Warren County, New Jersey. It was in force for 33 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
- Jun 12, 2015, 7:27 PM EDT (23:27 UTC)
- Expired
- Jun 12, 2015, 8:00 PM EDT
- In force
- 33 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Warren County, NJ, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 108 km from the middle of the area, began a volume at 23:30 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 |
|---|---|---|---|
| Jun 12, 7:33 PM EDT | HAIL 0.25 | Forks Twp, PA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 11.5 hours before the alert went out and 187 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2083 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
947
WUUS51 KPHI 122327
SVRPHI
NJC041-PAC095-130000-
/O.NEW.KPHI.SV.W.0042.150612T2327Z-150613T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
727 PM EDT FRI JUN 12 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWESTERN WARREN COUNTY IN NORTHWESTERN NEW JERSEY...
SOUTHEASTERN NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
* UNTIL 800 PM EDT
* AT 726 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
WAS LOCATED OVER HARMONY...OR OVER EASTON...AND MOVING NORTHEAST AT
30 MPH.
* LOCATIONS IMPACTED INCLUDE...
EASTON...FORKS...WILSON...WASHINGTON...NAZARETH...BELVIDERE...
HARMONY...OXFORD...ALPHA...HOPE...BELFAST...WEST EASTON...TATAMY...
GLENDON...PLEASANT VALLEY...ROXBURG...BRASS CASTLE...OLD ORCHARD...
GREAT MEADOWS-VIENNA AND PHILLIPSBURG.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
&&
LAT...LON 4096 7493 4078 7489 4061 7519 4060 7523
4075 7532
TIME...MOT...LOC 2326Z 245DEG 42KT 4071 7517
$$
JJM1 follow-up statement
137
WWUS51 KPHI 122351
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
751 PM EDT FRI JUN 12 2015
PAC095-130000-
/O.CAN.KPHI.SV.W.0042.000000T0000Z-150613T0000Z/
NORTHAMPTON PA-
751 PM EDT FRI JUN 12 2015
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN NORTHAMPTON
COUNTY IS CANCELLED...
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 4096 7493 4078 7489 4068 7506 4075 7509
4087 7504
TIME...MOT...LOC 2350Z 240DEG 33KT 4084 7495
$$
NJC041-130000-
/O.CON.KPHI.SV.W.0042.000000T0000Z-150613T0000Z/
WARREN NJ-
751 PM EDT FRI JUN 12 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR CENTRAL WARREN COUNTY...
AT 750 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED OVER OXFORD...OR 17 MILES NORTHEAST OF EASTON...MOVING
NORTHEAST AT 35 MPH.
LOCATIONS IMPACTED INCLUDE...
WASHINGTON...OXFORD...HOPE...PLEASANT VALLEY...BRASS CASTLE AND GREAT
MEADOWS-VIENNA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
&&
LAT...LON 4096 7493 4078 7489 4068 7506 4075 7509
4087 7504
TIME...MOT...LOC 2350Z 240DEG 33KT 4084 7495
$$
JJMThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 8:57 PM EDT | Special Weather Statement | PHI | Schuylkill | 48 min |
| Jun 11, 9:23 PM EDT | Special Weather Statement | PHI | Lehigh, Northampton | 52 min |
| Jun 11, 9:33 PM EDT | Special Weather Statement | PHI | Berks | 27 min |
| Jun 11, 9:41 PM EDT | Areal Flood Advisory | PHI | Lehigh, Northampton | 4 hr |
| Jun 11, 9:54 PM EDT | Special Weather Statement | PHI | Berks | 51 min |
| Jun 12, 4:38 PM EDT | Special Weather Statement | PHI | Montgomery | 52 min |
| Jun 12, 4:57 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 48 min |
| Jun 12, 5:07 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Northampton | 38 min |
| Jun 12, 5:41 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 49 min |
| Jun 12, 6:13 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 28 min |
| Jun 12, 6:53 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Northampton | 52 min |
| Jun 12, 2:26 PM EDT | Special Weather Statement | PHI | Morris | 34 min |
| Jun 12, 3:05 PM EDT | Special Weather Statement | PHI | Morris | 55 min |
| Jun 12, 3:13 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Somerset | 37 min |
| Jun 12, 6:23 PM EDT | Severe Thunderstorm Warning | PHI | Sussex, Warren | 67 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2015Severe Thunderstorm Warnings in New Jersey, 2015Every severe thunderstorm warning in 2015
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.