Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 15, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 27, 2012, 8:04 PM EDT for Berks County, Pennsylvania. It was in force for 56 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
- May 27, 2012, 8:04 PM EDT (00:04 UTC)
- Expired
- May 27, 2012, 9:00 PM EDT
- In force
- 56 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 158 km from the middle of the area, began a volume at 00:07 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, 0.1 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
- 319 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 1455 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
796
WUUS51 KPHI 280004
SVRPHI
PAC011-280100-
/O.NEW.KPHI.SV.W.0015.120528T0004Z-120528T0100Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
804 PM EDT SUN MAY 27 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WESTERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
THIS INCLUDES THE CITY OF READING...
* UNTIL 900 PM EDT
* AT 800 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 42 MILES NORTHWEST OF HAMBURG TO 11 MILES WEST OF STRAUSSTOWN
TO 50 MILES SOUTHWEST OF WOMELSDORF...OR ALONG A LINE EXTENDING
FROM 29 MILES SOUTHWEST OF WILKES-BARRE TO 25 MILES WEST OF READING
TO 29 MILES SOUTHWEST OF LANCASTER...AND MOVING EAST AT 35 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
STRAUSSTOWN AROUND 815 PM EDT...
WOMELSDORF AND STRAUSSTOWN AROUND 820 PM EDT...
BERNVILLE AROUND 825 PM EDT...
WERNERSVILLE AND HAMBURG AROUND 835 PM EDT...
SINKING SPRING...SHOEMAKERSVILLE...LEESPORT AND HAMBURG AROUND 840
PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS LINE OF STORMS, IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS AND DEADLY CLOUD TO GROUND LIGHTNING.
PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG
BUILDING BUT AWAY FROM WINDOWS.
IN ADDITION TO DAMAGING WINDS...FREQUENT CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY! LIGHTNING
IS ONE OF NATURES GREATEST KILLERS. REMEMBER...IF YOU CAN HEAR
THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.
THIS LINE OF STORMS HAS HAD A HISTORY OF PRODUCING DAMAGING WINDS.
SEEK SHELTER NOW 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.
&&
LAT...LON 4052 7635 4052 7624 4058 7606 4058 7602
4065 7599 4068 7589 4063 7587 4019 7595
4019 7596 4036 7621 4036 7623 4046 7639
4050 7643
TIME...MOT...LOC 0002Z 272DEG 29KT 4109 7636 4046 7635
3977 7668
$$
GORSE2 follow-up statements
459
WWUS51 KPHI 280033
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
833 PM EDT SUN MAY 27 2012
PAC011-280100-
/O.CON.KPHI.SV.W.0015.000000T0000Z-120528T0100Z/
BERKS PA-
833 PM EDT SUN MAY 27 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR WESTERN BERKS COUNTY...
AT 830 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 31 MILES NORTHWEST OF HAMBURG TO WOMELSDORF TO 52 MILES
SOUTHWEST OF MOHNTON...OR ALONG A LINE EXTENDING FROM 27 MILES
SOUTHWEST OF WILKES-BARRE TO 16 MILES WEST OF READING TO 24 MILES
NORTH OF BALTIMORE...MOVING EAST AT 30 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
BERNVILLE BY 845 PM EDT...
WERNERSVILLE BY 850 PM EDT...
SINKING SPRING BY 855 PM EDT...
CENTERPORT...WHITFIELD...WEST WYOMISSING AND WEST LAWN BY 900 PM
EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION TO DAMAGING WINDS...CLOUD TO GROUND LIGHTNING IS
OCCURRING WITH THIS LINE OF STORMS. MOVE INDOORS IMMEDIATELY!
LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU
CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.
THIS LINE OF STORMS HAS HAD A HISTORY OF PRODUCING DAMAGING WINDS.
SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS!
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
&&
LAT...LON 4052 7635 4052 7624 4058 7606 4058 7602
4065 7599 4068 7589 4063 7587 4019 7595
4019 7596 4036 7621 4036 7623 4046 7639
4050 7643
TIME...MOT...LOC 0031Z 261DEG 25KT 4096 7622 4033 7621
3963 7646
$$
GORSE900
WWUS51 KPHI 280051
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
851 PM EDT SUN MAY 27 2012
PAC011-280101-
/O.EXP.KPHI.SV.W.0015.000000T0000Z-120528T0100Z/
BERKS PA-
851 PM EDT SUN MAY 27 2012
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN BERKS COUNTY WILL
EXPIRE AT 900 PM EDT...
THE LINE OF THUNDERSTORMS IS SHOWING A WEAKENING TREND, THEREFORE
THE WARNING WILL BE ALLOWED TO EXPIRE.
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.
LAT...LON 4052 7635 4052 7624 4058 7606 4058 7602
4065 7599 4068 7589 4063 7587 4019 7595
4019 7596 4036 7621 4036 7623 4046 7639
4050 7643
TIME...MOT...LOC 0051Z 261DEG 25KT 4098 7604 4035 7603
3965 7628
$$
GORSEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 9:20 PM EDT | Areal Flood Advisory | PHI | Monroe | 3 hr |
| May 27, 9:36 PM EDT | Special Weather Statement | PHI | Lehigh, Northampton | 54 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.