Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 46, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 14, 2015, 7:16 PM EDT for Berks County, Chester County, Montgomery County, Pennsylvania. It was in force for 44 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 14, 2015, 7:16 PM EDT (23:16 UTC)
- Expired
- Jun 14, 2015, 8:00 PM EDT
- In force
- 44 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Berks County, PA, Chester County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 116 km from the middle of the area, began a volume at 23:18 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 14, 7:50 PM EDT | TSTM WND DMG | Franconia Twp, PA | SEVERAL TREES DOWN AND A MAILBOX BLOWN INTO NEIGHBORS DRIVEWAY |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 11.3 hours before the alert went out and 207 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
- 24 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1394 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -35 m²/s²
- 0-3 km storm-relative helicity
- -19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
889
WUUS51 KPHI 142316
SVRPHI
PAC011-029-091-150000-
/O.NEW.KPHI.SV.W.0046.150614T2316Z-150615T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
716 PM EDT SUN JUN 14 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN CHESTER COUNTY IN SOUTHEASTERN PENNSYLVANIA...
SOUTHEASTERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
NORTHWESTERN MONTGOMERY COUNTY IN SOUTHEASTERN PENNSYLVANIA...
* UNTIL 800 PM EDT
* AT 715 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED OVER ELVERSON...OR 11 MILES
SOUTHEAST OF READING...AND MOVING NORTHEAST AT 20 MPH.
* LOCATIONS IMPACTED INCLUDE...
READING...POTTSTOWN...PHOENIXVILLE...LANSDALE...SOUDERTON...
BIRDSBORO...COLLEGEVILLE...ROYERSFORD...TRAPPE...HATFIELD...EAST
GREENVILLE...SCHWENKSVILLE...ELVERSON...BALLY...BECHTELSVILLE...
GREEN LANE...NEW MORGAN...CEDARVILLE...SPRING MOUNT AND
GILBERTSVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE INDOORS.
HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE
WATER COVERS THE ROAD.
&&
LAT...LON 4051 7564 4027 7525 4004 7574 4018 7574
4015 7589 4024 7603
TIME...MOT...LOC 2315Z 233DEG 19KT 4019 7582
$$
IOVINO1 follow-up statement
473
WWUS51 KPHI 142331
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
731 PM EDT SUN JUN 14 2015
PAC011-029-091-150000-
/O.CON.KPHI.SV.W.0046.000000T0000Z-150615T0000Z/
CHESTER PA-BERKS PA-MONTGOMERY PA-
731 PM EDT SUN JUN 14 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHEASTERN CHESTER...SOUTHEASTERN BERKS AND NORTHWESTERN
MONTGOMERY COUNTIES...
AT 731 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60
MPH. THIS STORM WAS LOCATED NEAR CEDARVILLE...MOVING NORTHEAST AT 20
MPH.
LOCATIONS IMPACTED INCLUDE...
POTTSTOWN...PHOENIXVILLE...LANSDALE...SOUDERTON...BIRDSBORO...
COLLEGEVILLE...ROYERSFORD...TRAPPE...HATFIELD...EAST GREENVILLE...
SCHWENKSVILLE...BALLY...BECHTELSVILLE...GREEN LANE...CEDARVILLE...
CHESTER SPRINGS...SPRING MOUNT...GILBERTSVILLE...PUGHTOWN AND
SKIPPACK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE INDOORS.
HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE
WATER COVERS THE ROAD.
&&
LAT...LON 4051 7564 4027 7525 4008 7564 4018 7574
4032 7590
TIME...MOT...LOC 2331Z 239DEG 18KT 4021 7573
$$
IOVINOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 4:11 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 38 min |
| Jun 14, 4:40 PM EDT | Areal Flood Advisory | PHI | Chester | 3 hr |
| Jun 14, 6:24 PM EDT | Special Weather Statement | PHI | Berks, Chester | 51 min |
| Jun 14, 6:35 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester | 55 min |
| Jun 14, 6:45 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 4 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 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.