Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 143, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 23, 2014, 6:14 PM EDT for 6 counties in Pennsylvania. It was in force for 61 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
- Jul 23, 2014, 6:14 PM EDT (22:14 UTC)
- Expired
- Jul 23, 2014, 7:15 PM EDT
- In force
- 61 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), 112 km from the middle of the area, began a volume at 22:17 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 |
|---|---|---|---|
| Jul 23, 6:40 PM EDT | TSTM WND DMG | 2 Se Oley Twp, PA | SEVERAL TREES AND WIRES DOWN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.2 hours before the alert went out and 108 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
- 697 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 737 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
022
WUUS51 KPHI 232214
SVRPHI
PAC011-017-029-077-091-095-232315-
/O.NEW.KPHI.SV.W.0143.140723T2214Z-140723T2315Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
614 PM EDT WED JUL 23 2014
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
NORTHWESTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
SOUTHEASTERN LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
NORTHWESTERN MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA...
SOUTH CENTRAL NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
NORTHERN CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 715 PM EDT
* AT 612 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
ANCIENT OAKS TO TERRE HILL...MOVING EAST AT 20 MPH. THESE STORMS
ARE CAPABLE OF PRODUCING ONE INCH DIAMETER HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
ALLENTOWN AND EMMAUS AROUND 625 PM EDT...
HONEY BROOK AND NEW MORGAN AROUND 630 PM EDT...
ZIONSVILLE AND BECHTELSVILLE AROUND 635 PM EDT...
LEHIGH UNIVERSITY AND ELVERSON AROUND 640 PM EDT...
HELLERTOWN AND GILBERTSVILLE AROUND 645 PM EDT...
GLENMOORE AND GERYVILLE AROUND 650 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.
&&
LAT...LON 4063 7560 4062 7521 4057 7519 4057 7510
4007 7561 4008 7594 4011 7595 4014 7589
4024 7604
TIME...MOT...LOC 2214Z 270DEG 19KT 4057 7555 4016 7601
$$
FORECASTER: SFJ3 follow-up statements
310
WWUS51 KPHI 232227
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
627 PM EDT WED JUL 23 2014
PAC011-017-029-077-091-095-232315-
/O.CON.KPHI.SV.W.0143.000000T0000Z-140723T2315Z/
BERKS PA-BUCKS PA-LEHIGH PA-MONTGOMERY PA-NORTHAMPTON PA-CHESTER PA-
627 PM EDT WED JUL 23 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR NORTHERN CHESTER...SOUTH CENTRAL NORTHAMPTON...NORTHWESTERN
MONTGOMERY...SOUTHEASTERN LEHIGH...NORTHWESTERN BUCKS AND
SOUTHEASTERN BERKS COUNTIES...
AT 623 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM ALLENTOWN TO NEW MORGAN...OR
ALONG A LINE EXTENDING FROM ALLENTOWN TO 9 MILES NORTHEAST OF NEW
HOLLAND...MOVING EAST AT 20 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
FOUNTAIN HILL...AMITY GARDENS...ZIONSVILLE AND BECHTELSVILLE BY 635
PM EDT...
LEHIGH UNIVERSITY...ELVERSON AND BOYERTOWN BY 640 PM EDT...
HELLERTOWN...STOWE AND HALFWAY HOUSE BY 645 PM EDT...
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.
LAT...LON 4063 7560 4062 7521 4057 7519 4057 7510
4007 7561 4008 7594 4011 7595 4014 7589
4024 7604
TIME...MOT...LOC 2227Z 270DEG 19KT 4057 7546 4016 7592
$$
SFJ331
WWUS51 KPHI 232242
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
642 PM EDT WED JUL 23 2014
PAC095-232252-
/O.CAN.KPHI.SV.W.0143.000000T0000Z-140723T2315Z/
NORTHAMPTON PA-
642 PM EDT WED JUL 23 2014
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL NORTHAMPTON
COUNTY IS CANCELLED...
THE THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED...THUS THE
SEVERE THUNDERSTORM WARNING IS CANCELLED.
LAT...LON 4058 7557 4057 7539 4054 7534 4057 7527
4057 7510 4007 7561 4008 7594 4011 7595
4014 7589 4021 7597
TIME...MOT...LOC 2242Z 270DEG 19KT 4050 7546 4016 7582
$$
PAC011-017-029-077-091-232315-
/O.CON.KPHI.SV.W.0143.000000T0000Z-140723T2315Z/
BERKS PA-BUCKS PA-LEHIGH PA-MONTGOMERY PA-CHESTER PA-
642 PM EDT WED JUL 23 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR NORTHERN CHESTER...NORTHWESTERN MONTGOMERY...SOUTHEASTERN
LEHIGH...NORTHWESTERN BUCKS AND SOUTHEASTERN BERKS COUNTIES...
AT 640 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM ZIONSVILLE TO ELVERSON...OR
ALONG A LINE EXTENDING FROM 6 MILES SOUTH OF ALLENTOWN TO 13 MILES
SOUTHEAST OF READING...MOVING EAST AT 20 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
COOPERSBURG...STOWE...HALFWAY HOUSE AND EAST GREENVILLE BY 650 PM
EDT...
SOUTH POTTSTOWN...POTTSGROVE...PENNSBURG AND KENILWORTH BY 655 PM
EDT...
SANATOGA AND RED HILL BY 700 PM EDT...
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.
LAT...LON 4058 7557 4057 7539 4054 7534 4057 7527
4057 7510 4007 7561 4008 7594 4011 7595
4014 7589 4021 7597
TIME...MOT...LOC 2242Z 270DEG 19KT 4050 7546 4016 7582
$$
SFJ702
WWUS51 KPHI 232306
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
706 PM EDT WED JUL 23 2014
PAC011-017-029-077-091-232315-
/O.EXP.KPHI.SV.W.0143.000000T0000Z-140723T2315Z/
BERKS PA-BUCKS PA-LEHIGH PA-MONTGOMERY PA-CHESTER PA-
706 PM EDT WED JUL 23 2014
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CHESTER...
NORTHWESTERN MONTGOMERY...SOUTHEASTERN LEHIGH...NORTHWESTERN BUCKS
AND SOUTHEASTERN BERKS COUNTIES WILL EXPIRE AT 715 PM EDT...
THE STORMS THAT PROMPTED THE WARNING HAVE WEAKENED. THEREFORE...THE
WARNING WILL BE ALLOWED TO EXPIRE AT 715 PM EDT. HOWEVER...GUSTS TO
40 MPH AND FREQUENT LIGHTNING ARE STILL POSSIBLE WITH THESE STORMS.
LAT...LON 4058 7557 4057 7539 4054 7534 4057 7527
4057 7510 4007 7561 4008 7594 4011 7595
4014 7589 4021 7597
TIME...MOT...LOC 2305Z 270DEG 19KT 4050 7530 4016 7566
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 4:33 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 57 min |
| Jul 23, 4:42 PM EDT | Special Weather Statement | PHI | Berks, Lehigh | 48 min |
| Jul 23, 5:17 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 58 min |
| Jul 23, 5:25 PM EDT | Special Weather Statement | PHI | Monroe | 50 min |
| Jul 23, 7:09 PM EDT | Special Weather Statement | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 51 min |
| Jul 23, 7:25 PM EDT | Special Weather Statement | PHI | Carbon, Lehigh, Monroe, Northampton | 65 min |
| Jul 23, 7:49 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 38 min |
| Jul 23, 7:59 PM EDT | Special Weather Statement | PHI | Delaware, Philadelphia | 61 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.