Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 86, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 9, 2016, 3:17 PM EDT for Chester County, Delaware County, Pennsylvania; New Castle County, Delaware. It was in force for 43 min. 2 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, 3:17 PM EDT (19:17 UTC)
- Expired
- Jul 9, 2016, 4:00 PM EDT
- In force
- 43 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties New Castle County, DE, Chester County, PA, Delaware County, PA
The radar
The Philadelphia radar (KDIX), 112 km from the middle of the area, began a volume at 19:18 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, 3:20 PM EDT | TSTM WND GST 55 | East Brandywine Twp, PA | |
| Jul 9, 4:04 PM EDT | FUNNEL CLOUD | 3 Sw Elam, DE |
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, 7.3 hours before the alert went out and 179 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.
013
WUUS51 KPHI 091917
SVRPHI
DEC003-PAC029-045-092000-
/O.NEW.KPHI.SV.W.0086.160709T1917Z-160709T2000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
317 PM EDT SAT JUL 9 2016
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTH CENTRAL NEW CASTLE COUNTY IN NORTHERN DELAWARE...
CENTRAL CHESTER COUNTY IN SOUTHEASTERN PENNSYLVANIA...
SOUTHWESTERN DELAWARE COUNTY IN SOUTHEASTERN PENNSYLVANIA...
* UNTIL 400 PM EDT
* AT 317 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
COATESVILLE... OR 10 MILES WEST OF WEST CHESTER...MOVING EAST AT
15 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
* LOCATIONS IMPACTED INCLUDE...
WEST CHESTER...COATESVILLE...WESTTOWN...DOWNINGTOWN...
KENNETT SQUARE...PARKESBURG...WEST GROVE...MARSHALLTON...
COCHRANVILLE...HOCKESSIN...ELAM...NORTH STAR...CHEYNEY...
CONCORDVILLE...GRADYVILLE...ASHLAND...NEWTOWN SQUARE...LIMA...
GREENVILLE AND PIKE CREEK.
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.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 3992 7597 4007 7583 3999 7537 3983 7553
3974 7569
TIME...MOT...LOC 1917Z 287DEG 14KT 3996 7580
HAIL...<.75IN
WIND...60MPH
$$
JRK1 follow-up statement
611
WWUS51 KPHI 091939
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
339 PM EDT SAT JUL 9 2016
DEC003-PAC029-045-092000-
/O.CON.KPHI.SV.W.0086.000000T0000Z-160709T2000Z/
NEW CASTLE DE-CHESTER PA-DELAWARE PA-
339 PM EDT SAT JUL 9 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR NORTH CENTRAL NEW CASTLE...SOUTHEASTERN CHESTER AND SOUTHWESTERN
DELAWARE COUNTIES...
AT 338 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER KENNETT
SQUARE...OR 7 MILES SOUTHWEST OF WEST CHESTER...MOVING SOUTHEAST AT
25 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
LOCATIONS IMPACTED INCLUDE...
WEST CHESTER...WESTTOWN...KENNETT
SQUARE...MARSHALLTON...CONCORDVILLE...
HOCKESSIN...GRADYVILLE...ELAM...NORTH
STAR...ASHLAND...CHEYNEY...LIMA...
GREENVILLE...PIKE CREEK...WEST GOSHEN...CHESTER HEIGHTS...SOUTH
COATESVILLE...AVONDALE...MODENA AND TOUGHKENAMON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
IN ADDITION TO DAMAGING WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS
OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. REMEMBER...IF
YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLOODING IN POOR DRAINAGE AREAS. DO NOT DRIVE YOUR VEHICLE THROUGH
FLOODED ROADWAYS.
&&
LAT...LON 3988 7588 3995 7585 4000 7565 3995 7541
3983 7553 3974 7569 3981 7580
TIME...MOT...LOC 1938Z 298DEG 19KT 3986 7568
HAIL...<.75IN
WIND...60MPH
$$
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, 3:55 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 50 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 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, 4:47 PM EDT | Special Weather Statement | PHI | New Castle | 43 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 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.