Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 45, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 14, 2015, 6:35 PM EDT for Berks County, Chester County, Pennsylvania. It was in force for 55 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
- Jun 14, 2015, 6:35 PM EDT (22:35 UTC)
- Expired
- Jun 14, 2015, 7:30 PM EDT
- In force
- 55 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Berks County, PA, Chester County, PA
The radar
The Philadelphia radar (KDIX), 131 km from the middle of the area, began a volume at 22:35 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 10.6 hours before the alert went out and 168 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.
806
WUUS51 KPHI 142235
SVRPHI
PAC011-029-142330-
/O.NEW.KPHI.SV.W.0045.150614T2235Z-150614T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
635 PM EDT SUN JUN 14 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL CHESTER COUNTY IN SOUTHEASTERN PENNSYLVANIA...
SOUTHERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
* UNTIL 730 PM EDT
* AT 634 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 GAP...OR 9 MILES SOUTH OF
NEW HOLLAND...AND MOVING EAST AT 15 MPH.
* LOCATIONS IMPACTED INCLUDE...
COATESVILLE...DOWNINGTOWN...KENNETT SQUARE...PARKESBURG...WEST
GROVE...HONEY BROOK...ELVERSON...NEW MORGAN...HOMEVILLE...
COCHRANVILLE...GLENMOORE...CEDARVILLE...MOUNT VERNON...ATGLEN...
SOUTH COATESVILLE...AVONDALE...CHRISTIANA...MODENA...THORNDALE AND
TOUGHKENAMON.
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 3983 7602 3985 7602 3987 7599 3992 7600
3994 7598 3995 7600 4004 7593 4011 7594
4014 7588 4019 7595 4023 7567 3981 7570
3981 7603 3983 7604
TIME...MOT...LOC 2234Z 271DEG 14KT 3997 7602
$$
IOVINO1 follow-up statement
148
WWUS51 KPHI 142301
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
701 PM EDT SUN JUN 14 2015
PAC011-029-142330-
/O.CON.KPHI.SV.W.0045.000000T0000Z-150614T2330Z/
CHESTER PA-BERKS PA-
701 PM EDT SUN JUN 14 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR CENTRAL CHESTER AND SOUTHERN BERKS COUNTIES...
AT 700 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60
MPH. THIS STORM WAS LOCATED NEAR HONEY BROOK AND IT WAS MOVING EAST
AT 15 MPH.
LOCATIONS IMPACTED INCLUDE...
COATESVILLE...DOWNINGTOWN...KENNETT SQUARE...PARKESBURG...HONEY
BROOK...ELVERSON...NEW MORGAN...COCHRANVILLE...GLENMOORE...
CEDARVILLE...ATGLEN...SOUTH COATESVILLE...CHRISTIANA...MODENA AND
THORNDALE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...HAIL... DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE INDOORS.
HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE
WATER COVERS THE ROAD.
&&
LAT...LON 3992 7600 3994 7598 3995 7600 4004 7593
4011 7594 4014 7588 4019 7595 4023 7567
3985 7570 3987 7599
TIME...MOT...LOC 2300Z 258DEG 13KT 4008 7586
$$
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, 6:45 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 4 hr |
| Jun 14, 7:16 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 44 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.