Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 87, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 9, 2016, 3:55 PM EDT for Chester County, Delaware County, Pennsylvania; Gloucester County, Salem County, New Jersey; New Castle County, Delaware. It was in force for 50 min. 4 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
- Jul 9, 2016, 3:55 PM EDT (19:55 UTC)
- Expired
- Jul 9, 2016, 4:45 PM EDT
- In force
- 50 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties New Castle County, DE, Gloucester County, NJ, Salem County, NJ, Chester County, PA, Delaware County, PA
The radar
The Philadelphia radar (KDIX), 101 km from the middle of the area, began a volume at 19:57 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 9, 4:04 PM EDT | FUNNEL CLOUD | 3 Sw Elam, DE | |
| Jul 9, 4:10 PM EDT | TSTM WND GST 50 | Fairfax, DE | ESTIMATED GUST TO 50 MPH. TIME ESTIMATED FROM RADAR. |
| Jul 9, 4:25 PM EDT | HAIL 0.25 | Bellefonte, DE | |
| Jul 9, 4:35 PM EDT | TSTM WND DMG | Oldmans Twp, NJ | SEVERAL TREE BRANCHES DOWN ON STRAUGHN MILL ROAD NEAR I 295. TIME ESTIMATED FROM RADAR AND NEARBY REPORTS |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 7.9 hours before the alert went out and 182 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
- 10 J/kg
- Mixed-layer CIN
- -183 J/kg
- Mixed-layer LCL
- 1248 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
766
WUUS51 KPHI 091955
SVRPHI
DEC003-NJC015-033-PAC029-045-092045-
/O.NEW.KPHI.SV.W.0087.160709T1955Z-160709T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
355 PM EDT SAT JUL 9 2016
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
NORTHWESTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
NORTHWESTERN SALEM COUNTY IN SOUTHERN NEW JERSEY...
SOUTHEASTERN CHESTER COUNTY IN SOUTHEASTERN PENNSYLVANIA...
SOUTHERN DELAWARE COUNTY IN SOUTHEASTERN PENNSYLVANIA...
* UNTIL 445 PM EDT
* AT 355 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
ASHLAND...OR 7 MILES SOUTH OF WEST CHESTER...MOVING SOUTHEAST AT
20 MPH.
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE
TO ROOFS...SIDING...AND TREES.
* LOCATIONS IMPACTED INCLUDE...
WILMINGTON...CHESTER...WEST DEPTFORD...PENNSVILLE...WESTTOWN...
CARNEYS POINT...SWARTHMORE...ELSMERE...PAULSBORO...
KENNETT SQUARE...NEW CASTLE...PENNS GROVE...SALEM...SWEDESBORO...
DELAWARE CITY...NEWPORT...ARDEN...GIBBSTOWN...
PHILADELPHIA INTERNATIONAL ARPT AND ELAM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
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 3983 7580 3996 7557 3985 7518 3951 7556
TIME...MOT...LOC 1955Z 299DEG 15KT 3985 7564
HAIL...1.00IN
WIND...60MPH
$$
ROBERTSON3 follow-up statements
807
WWUS51 KPHI 092018
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
418 PM EDT SAT JUL 9 2016
PAC029-092027-
/O.CAN.KPHI.SV.W.0087.000000T0000Z-160709T2045Z/
CHESTER PA-
418 PM EDT SAT JUL 9 2016
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHESTER COUNTY IS
CANCELLED...
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 3986 7553 3981 7523 3958 7548 3959 7552
3969 7559 3978 7564
TIME...MOT...LOC 2017Z 306DEG 15KT 3978 7555
$$
DEC003-NJC015-033-PAC045-092045-
/O.CON.KPHI.SV.W.0087.000000T0000Z-160709T2045Z/
NEW CASTLE DE-GLOUCESTER NJ-SALEM NJ-DELAWARE PA-
418 PM EDT SAT JUL 9 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHEASTERN NEW CASTLE...NORTHWESTERN GLOUCESTER...NORTHWESTERN
SALEM AND SOUTHWESTERN DELAWARE COUNTIES...
AT 417 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
TALLEYVILLE...OR NEAR WILMINGTON... MOVING SOUTHEAST AT 20 MPH.
HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
LOCATIONS IMPACTED INCLUDE...
WILMINGTON...CHESTER...PENNSVILLE...CARNEYS POINT...ELSMERE...NEW
CASTLE...
PENNS GROVE...SALEM...SWEDESBORO...NEWPORT...ARDEN...WILMINGTON
MANOR...
TALLEYVILLE...GREENVILLE...DELAWARE MEMORIAL BRIDGE...BECKETT...
GIBBSTOWN...MARCUS HOOK...TRAINER AND BELLEFONTE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
IN ADDITION TO 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.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 3986 7553 3981 7523 3958 7548 3959 7552
3969 7559 3978 7564
TIME...MOT...LOC 2017Z 306DEG 15KT 3978 7555
HAIL...0.75IN
WIND...60MPH
$$
JRK233
WWUS51 KPHI 092039
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
439 PM EDT SAT JUL 9 2016
NJC015-PAC045-092048-
/O.CAN.KPHI.SV.W.0087.000000T0000Z-160709T2045Z/
GLOUCESTER NJ-DELAWARE PA-
439 PM EDT SAT JUL 9 2016
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN GLOUCESTER AND
SOUTHWESTERN DELAWARE COUNTIES IS CANCELLED...
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 3980 7548 3977 7540 3976 7540 3975 7538
3973 7538 3970 7535 3959 7547 3958 7549
3960 7553 3963 7555 3974 7557
TIME...MOT...LOC 2038Z 316DEG 19KT 3970 7546
$$
DEC003-NJC033-092045-
/O.CON.KPHI.SV.W.0087.000000T0000Z-160709T2045Z/
NEW CASTLE DE-SALEM NJ-
439 PM EDT SAT JUL 9 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHEASTERN NEW CASTLE AND NORTHWESTERN SALEM COUNTIES...
AT 438 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER CARNEYS
POINT...OR NEAR WILMINGTON...MOVING SOUTHEAST AT 25 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
LOCATIONS IMPACTED INCLUDE...
WILMINGTON...PENNSVILLE...CARNEYS POINT...NEW CASTLE...PENNS GROVE...
SALEM...DELAWARE MEMORIAL BRIDGE...BELLEFONTE...EDGEMOOR AND
CLAYMONT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
IN ADDITION TO 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.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
POOR DRAINAGE FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 3980 7548 3977 7540 3976 7540 3975 7538
3973 7538 3970 7535 3959 7547 3958 7549
3960 7553 3963 7555 3974 7557
TIME...MOT...LOC 2038Z 316DEG 19KT 3970 7546
HAIL...<.75IN
WIND...60MPH
$$
JRK461
WWUS51 KPHI 092047
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
447 PM EDT SAT JUL 9 2016
DEC003-NJC033-092057-
/O.EXP.KPHI.SV.W.0087.000000T0000Z-160709T2045Z/
NEW CASTLE DE-SALEM NJ-
447 PM EDT SAT JUL 9 2016
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NEW CASTLE AND
NORTHWESTERN SALEM COUNTIES HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE. HOWEVER GUSTY
WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
MOUNT HOLLY NJ.
LAT...LON 3980 7548 3977 7540 3976 7540 3975 7538
3973 7538 3970 7535 3959 7547 3958 7549
3960 7553 3963 7555 3974 7557
TIME...MOT...LOC 2045Z 299DEG 15KT 3970 7546
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 12:35 PM EDT | Special Weather Statement | PHI | Berks | 25 min |
| Jul 9, 12:59 PM EDT | Special Weather Statement | PHI | Berks | 31 min |
| Jul 9, 1:27 PM EDT | Special Weather Statement | PHI | Berks | 48 min |
| Jul 9, 2:40 PM EDT | Special Weather Statement | PHI | Chester | 50 min |
| Jul 9, 3:17 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 43 min |
| Jul 9, 4:15 PM EDT | Areal Flood Advisory | PHI | Chester, Delaware | 4 hr |
| Jul 9, 7:33 PM EDT | Special Weather Statement | PHI | Berks, Lehigh, Northampton | 57 min |
| Jul 8, 8:12 PM EDT | Flash Flood Warning | PHI | Atlantic, Burlington | 4 hr |
| Jul 9, 4:08 PM EDT | Special Marine Warning | PHI | 67 min | |
| Jul 9, 4:47 PM EDT | Special Weather Statement | PHI | Salem | 43 min |
| Jul 9, 6:11 PM EDT | Special Weather Statement | PHI | Salem | 34 min |
| Jul 9, 6:31 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Salem | 44 min |
| Jul 9, 6:33 PM EDT | Special Marine Warning | PHI | 57 min | |
| Jul 9, 6:43 PM EDT | Areal Flood Advisory | PHI | Cumberland, Salem | 4 hr |
| Jul 9, 7:07 PM EDT | Special Marine Warning | PHI | 53 min | |
| Jul 9, 7:07 PM EDT | Severe Thunderstorm Warning | PHI | Cape May, Cumberland | 33 min |
| Jul 9, 2:38 PM EDT | Special Weather Statement | PHI | Sussex | 22 min |
| Jul 9, 3:13 PM EDT | Special Weather Statement | PHI | Sussex | 62 min |
| Jul 9, 4:11 PM EDT | Special Weather Statement | PHI | New Castle | 34 min |
| Jul 9, 5:31 PM EDT | Special Weather Statement | PHI | New Castle | 29 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2016Severe Thunderstorm Warnings in New Jersey, 2016Severe Thunderstorm Warnings in Delaware, 2016Every severe thunderstorm warning in 2016
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.