Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 164, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 6, 2014, 8:27 PM EDT for 6 counties in Pennsylvania. It was in force for 63 min. 5 reports 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
- Sep 6, 2014, 8:27 PM EDT (00:27 UTC)
- Expired
- Sep 6, 2014, 9:30 PM EDT
- In force
- 63 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Berks County, PA, Bucks County, PA, Chester County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 116 km from the middle of the area, began a volume at 00:30 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 |
|---|---|---|---|
| Sep 6, 8:28 PM EDT | TSTM WND DMG | Weisenberg, PA | TREE DOWN BLOCKING ROADWAY |
| Sep 6, 8:50 PM EDT | HAIL 0.25 | Boyertown, PA | |
| Sep 6, 8:55 PM EDT | HAIL 0.75 | Ancient Oaks, PA | |
| Sep 6, 9:15 PM EDT | TSTM WND GST 57 | Skippack, PA | |
| Sep 6, 9:34 PM EDT | TSTM WND GST 50 | Springfield Twp, PA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 6, 2:07 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.5 hours before the alert went out and 231 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
- 1079 J/kg
- Mixed-layer CIN
- -129 J/kg
- Mixed-layer LCL
- 1281 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
800
WUUS51 KPHI 070027
SVRPHI
PAC011-017-029-077-091-095-070130-
/O.NEW.KPHI.SV.W.0164.140907T0027Z-140907T0130Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
827 PM EDT SAT SEP 6 2014
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
BERKS COUNTY IN EASTERN PENNSYLVANIA...
NORTHWESTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
NORTHERN MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA...
SOUTHWESTERN NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
NORTH CENTRAL CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 930 PM EDT
* AT 825 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
NEFFS TO TOPTON TO BERNVILLE...MOVING SOUTHEAST AT 30 MPH. THESE
STORMS ARE CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
NORTHAMPTON AND ANCIENT OAKS AROUND 835 PM EDT...
WYOMISSING AND ALLENTOWN AROUND 840 PM EDT...
EMMAUS AND ZIONSVILLE AROUND 845 PM EDT...
ZIONSVILLE AND BALLY AROUND 850 PM EDT...
EAST GREENVILLE AND HELLERTOWN AROUND 855 PM EDT...
GILBERTSVILLE AND SPRINGTOWN AROUND 900 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
SATURDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.
&&
LAT...LON 4061 7586 4078 7565 4078 7558 4049 7506
4046 7507 4028 7517 4012 7557 4041 7628
TIME...MOT...LOC 0027Z 299DEG 26KT 4071 7554 4052 7570
4040 7605
$$
FORECASTER: SFJ3 follow-up statements
029
WWUS51 KPHI 070045
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
845 PM EDT SAT SEP 6 2014
PAC011-017-029-077-091-095-070130-
/O.CON.KPHI.SV.W.0164.000000T0000Z-140907T0130Z/
BERKS PA-BUCKS PA-LEHIGH PA-MONTGOMERY PA-NORTHAMPTON PA-CHESTER PA-
845 PM EDT SAT SEP 6 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR NORTH CENTRAL CHESTER...SOUTHWESTERN NORTHAMPTON...NORTHERN
MONTGOMERY...LEHIGH...NORTHWESTERN BUCKS AND EASTERN BERKS
COUNTIES...
AT 842 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM CATASAUQUA TO ALBURTIS TO
AMITY GARDENS...OR ALONG A LINE EXTENDING FROM 6 MILES NORTHEAST OF
ALLENTOWN TO 10 MILES SOUTHWEST OF ALLENTOWN TO 11 MILES SOUTHEAST OF
READING...MOVING SOUTHEAST AT 30 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
FREEMANSBURG...SOUTH POTTSTOWN...KENILWORTH AND HALFWAY HOUSE BY
850 PM EDT...
SANATOGA...POTTSGROVE...PENNSBURG AND EAST GREENVILLE BY 855 PM
EDT...
SPRINGTOWN AND GREEN LANE BY 900 PM EDT...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.
LAT...LON 4030 7597 4077 7557 4049 7506 4046 7507
4028 7517 4012 7557
TIME...MOT...LOC 0045Z 299DEG 26KT 4065 7539 4046 7555
4024 7571
$$
SFJ168
WWUS51 KPHI 070057
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
857 PM EDT SAT SEP 6 2014
PAC011-017-029-077-091-095-070130-
/O.CON.KPHI.SV.W.0164.000000T0000Z-140907T0130Z/
BERKS PA-BUCKS PA-LEHIGH PA-MONTGOMERY PA-NORTHAMPTON PA-CHESTER PA-
857 PM EDT SAT SEP 6 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR NORTH CENTRAL CHESTER...SOUTH CENTRAL NORTHAMPTON...NORTHERN
MONTGOMERY...SOUTHEASTERN LEHIGH...NORTHWESTERN BUCKS AND
SOUTHEASTERN BERKS COUNTIES...
AT 856 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM FREEMANSBURG TO GERYVILLE TO
KENILWORTH...OR ALONG A LINE EXTENDING FROM 7 MILES SOUTHWEST OF
EASTON TO 12 MILES SOUTH OF ALLENTOWN TO 17 MILES NORTH OF WEST
CHESTER...MOVING SOUTHEAST AT 30 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
TRUMBAUERSVILLE...SPRING CITY...RICHLANDTOWN AND SCHWENKSVILLE BY
905 PM EDT...
HARLEYSVILLE...TRAPPE...FERNDALE AND COLLEGEVILLE BY 910 PM EDT...
TELFORD AND SKIPPACK BY 915 PM EDT...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.
LAT...LON 4025 7585 4072 7548 4049 7506 4046 7507
4028 7517 4012 7557
TIME...MOT...LOC 0057Z 299DEG 26KT 4061 7529 4042 7545
4020 7561
$$
SFJ623
WWUS51 KPHI 070110
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
910 PM EDT SAT SEP 6 2014
PAC011-070120-
/O.CAN.KPHI.SV.W.0164.000000T0000Z-140907T0130Z/
BERKS PA-
910 PM EDT SAT SEP 6 2014
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BERKS COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE COUNTY.
THUS...THE WARNING HAS BEEN CANCELLED.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.
LAT...LON 4018 7569 4064 7533 4049 7506 4046 7507
4028 7517 4012 7557
TIME...MOT...LOC 0110Z 299DEG 26KT 4056 7518 4037 7534
4015 7550
$$
PAC017-029-077-091-095-070130-
/O.CON.KPHI.SV.W.0164.000000T0000Z-140907T0130Z/
BUCKS PA-LEHIGH PA-MONTGOMERY PA-NORTHAMPTON PA-CHESTER PA-
910 PM EDT SAT SEP 6 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR NORTHEASTERN CHESTER...SOUTH CENTRAL NORTHAMPTON...NORTHERN
MONTGOMERY...SOUTHEASTERN LEHIGH AND NORTHWESTERN BUCKS COUNTIES...
AT 909 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM FERNDALE TO SELLERSVILLE TO SPRING CITY...OR ALONG A
LINE EXTENDING FROM 9 MILES SOUTH OF EASTON TO 16 MILES SOUTHEAST OF
ALLENTOWN TO 14 MILES NORTH OF WEST CHESTER...MOVING SOUTHEAST AT 30
MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
TELFORD...SKIPPACK...SELLERSVILLE AND EVANSBURG BY 915 PM EDT...
SILVERDALE...KULPSVILLE...DUBLIN AND OTTSVILLE BY 920 PM EDT...
PIPERSVILLE AND LANSDALE BY 925 PM EDT...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.
LAT...LON 4018 7569 4064 7533 4049 7506 4046 7507
4028 7517 4012 7557
TIME...MOT...LOC 0110Z 299DEG 26KT 4056 7518 4037 7534
4015 7550
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 9:04 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Northampton | 42 min |
| Sep 6, 9:30 PM EDT | Special Weather Statement | PHI | Bucks, Montgomery, Philadelphia | 60 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2014Every severe thunderstorm warning in 2014
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.