Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 238, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Oct 19, 2012, 8:42 PM EDT for Berks County, Pennsylvania. It was in force for 63 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
- Oct 19, 2012, 8:42 PM EDT (00:42 UTC)
- Expired
- Oct 19, 2012, 9:45 PM EDT
- In force
- 63 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 127 km from the middle of the area, began a volume at 00:43 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 00:00Z, 0.7 hours before the alert went out and 202 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
- 1810 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
375
WUUS51 KPHI 200042
SVRPHI
PAC011-200145-
/O.NEW.KPHI.SV.W.0238.121020T0042Z-121020T0145Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
842 PM EDT FRI OCT 19 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
THIS INCLUDES THE CITY OF READING...
* UNTIL 945 PM EDT
* AT 839 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 11 MILES SOUTHWEST OF NEW
MORGAN...OR 14 MILES EAST OF LANCASTER...AND MOVING NORTHEAST AT 25
MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
NEW MORGAN AROUND 905 PM EDT...
6 MILES SOUTHEAST OF READING AND 8 MILES SOUTHEAST OF WYOMISSING
AROUND 920 PM EDT...
BIRDSBORO AROUND 925 PM EDT...
8 MILES SOUTHEAST OF LAURELDALE AROUND 930 PM EDT...
8 MILES SOUTHEAST OF FLEETWOOD AROUND 945 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME ROTATION WITHIN THIS STORM. WHILE
NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS
SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS WHILE IN
CENTRAL LANCASTER COUNTY. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE
AND STAY AWAY FROM WINDOWS!
&&
LAT...LON 4050 7584 4034 7562 4026 7568 4014 7587
4014 7589 4026 7607
TIME...MOT...LOC 0042Z 223DEG 20KT 4011 7603
$$
HEAVENER/JACKSON2 follow-up statements
354
WWUS51 KPHI 200112
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
912 PM EDT FRI OCT 19 2012
PAC011-200145-
/O.CON.KPHI.SV.W.0238.000000T0000Z-121020T0145Z/
BERKS PA-
912 PM EDT FRI OCT 19 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR SOUTHEASTERN BERKS COUNTY...
AT 908 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES SOUTHWEST OF
BIRDSBORO...OR 8 MILES SOUTH OF READING...MOVING NORTHEAST AT 25 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
BIRDSBORO BY 920 PM EDT...
BIRDSBORO...LORANE...REIFFTON AND ST. LAWRENCE BY 925 PM EDT...
AMITY GARDENS BY 930 PM EDT...
BOYERTOWN BY 945 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...HEAVY RAIN WILL OCCUR
WITH THESE STORMS AND CAUSE LOW-LYING AND POOR DRAINAGE FLOODING.
&&
LAT...LON 4034 7600 4050 7584 4034 7562 4026 7568
4023 7572 4020 7577
TIME...MOT...LOC 0111Z 223DEG 20KT 4023 7589
$$
HEAVENER084
WWUS51 KPHI 200134
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
934 PM EDT FRI OCT 19 2012
PAC011-200145-
/O.CON.KPHI.SV.W.0238.000000T0000Z-121020T0145Z/
BERKS PA-
934 PM EDT FRI OCT 19 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR EAST CENTRAL BERKS COUNTY...
AT 930 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 LORANE...OR 7 MILES
EAST OF READING...MOVING NORTHEAST AT 25 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
BOYERTOWN BY 945 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS SEVERE THUNDERSTORM MAY CONTAIN LITTLE OR NO CLOUD TO GROUND
LIGHTNING. DO NOT WAIT FOR THUNDER BEFORE TAKING COVER. SEEK SHELTER
IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4043 7575 4042 7573 4034 7562 4026 7568
4022 7573 4022 7574 4029 7587
TIME...MOT...LOC 0134Z 223DEG 20KT 4032 7578
$$
HEAVENERThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 19, 8:31 PM EDT | Special Weather Statement | PHI | Berks | 44 min |
| Oct 19, 8:59 PM EDT | Tornado Warning | PHI | Berks | 31 min |
| Oct 19, 9:24 PM EDT | Special Weather Statement | PHI | Chester, Delaware, Montgomery | 96 min |
| Oct 19, 10:00 PM EDT | Areal Flood Advisory | PHI | Chester, Delaware | 63 min |
| Oct 19, 10:15 PM EDT | Special Weather Statement | PHI | Monroe, Northampton | 60 min |
| Oct 19, 10:27 PM EDT | Special Weather Statement | PHI | Bucks, Montgomery | 63 min |
Nearby
Severe 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.