Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 34, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 26, 2016, 5:49 PM EDT for Chester County, Delaware County, Montgomery County, Pennsylvania. It was in force for 41 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
- Apr 26, 2016, 5:49 PM EDT (21:49 UTC)
- Expired
- Apr 26, 2016, 6:30 PM EDT
- In force
- 41 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Chester County, PA, Delaware County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 93 km from the middle of the area, began a volume at 21:50 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 26, 1:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.8 hours before the alert went out and 79 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
- 25 J/kg
- Mixed-layer CIN
- -252 J/kg
- Mixed-layer LCL
- 1659 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
685
WUUS51 KPHI 262149
SVRPHI
PAC029-045-091-262230-
/O.NEW.KPHI.SV.W.0034.160426T2149Z-160426T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
549 PM EDT TUE APR 26 2016
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL CHESTER COUNTY IN SOUTHEASTERN PENNSYLVANIA...
DELAWARE COUNTY IN SOUTHEASTERN PENNSYLVANIA...
SOUTH CENTRAL MONTGOMERY COUNTY IN SOUTHEASTERN PENNSYLVANIA...
* UNTIL 630 PM EDT
* AT 548 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER DOWNINGTOWN...
OR 8 MILES NORTHWEST OF WEST CHESTER...MOVING EAST AT 40 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
* LOCATIONS IMPACTED INCLUDE...
WEST CHESTER...CHESTER...COATESVILLE...WESTTOWN...DOWNINGTOWN...
CONSHOHOCKEN...SWARTHMORE...NARBERTH...MARSHALLTON...GLENMOORE...RADNOR
TOWNSHIP...TROUT LAKE...BROOMALL...PAOLI...LIONVILLE-MARCHWOOD...
LIONVILLE...NETHER PROVIDENCE TOWNSHIP...CHELSEA...BRYN MAWR AND
CHEYNEY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4013 7582 4007 7525 4005 7526 4004 7525
3985 7531 3983 7537 3996 7588
TIME...MOT...LOC 2148Z 285DEG 33KT 4003 7575
HAIL...<.75IN
WIND...60MPH
$$
KRUZDLO2 follow-up statements
131
WWUS51 KPHI 262208
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
608 PM EDT TUE APR 26 2016
PAC029-045-091-262230-
/O.CON.KPHI.SV.W.0034.000000T0000Z-160426T2230Z/
CHESTER PA-DELAWARE PA-MONTGOMERY PA-
608 PM EDT TUE APR 26 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR EAST CENTRAL CHESTER...DELAWARE AND SOUTH CENTRAL MONTGOMERY
COUNTIES...
AT 607 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR CHEYNEY...OR
NEAR WEST CHESTER...MOVING EAST AT 40 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
LOCATIONS IMPACTED INCLUDE...
WEST CHESTER...CHESTER...WESTTOWN...CONSHOHOCKEN...SWARTHMORE...NARBERTH...
RADNOR TOWNSHIP...TROUT LAKE...BROOMALL...PAOLI...NETHER PROVIDENCE
TOWNSHIP...CHELSEA...BRYN MAWR...CHEYNEY...DREXEL HILL...LIMA...CHESTER
TOWNSHIP...CONCORDVILLE...GRADYVILLE AND NEWTOWN SQUARE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4010 7554 4007 7525 4005 7526 4004 7525
3985 7531 3983 7537 3989 7562
TIME...MOT...LOC 2207Z 285DEG 33KT 3998 7552
HAIL...<.75IN
WIND...60MPH
$$
KRUZDLO137
WWUS51 KPHI 262226
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
626 PM EDT TUE APR 26 2016
PAC029-045-091-262235-
/O.EXP.KPHI.SV.W.0034.000000T0000Z-160426T2230Z/
CHESTER PA-DELAWARE PA-MONTGOMERY PA-
626 PM EDT TUE APR 26 2016
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CHESTER...
DELAWARE AND SOUTH CENTRAL MONTGOMERY COUNTIES WILL EXPIRE AT 630 PM
EDT...
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 WILL BE ALLOWED TO EXPIRE.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FOR
SOUTHERN NEW JERSEY...AND SOUTHEASTERN PENNSYLVANIA.
LAT...LON 4010 7554 4007 7525 4005 7526 4004 7525
3985 7531 3983 7537 3989 7562
TIME...MOT...LOC 2224Z 285DEG 33KT 3998 7552
$$
KRUZDLOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 12:34 AM EDT | Severe Thunderstorm Warning | PHI | Delaware | 41 min |
| Apr 26, 1:58 AM EDT | Special Weather Statement | PHI | Lehigh, Northampton | 47 min |
| Apr 26, 2:25 AM EDT | Special Weather Statement | PHI | Lehigh, Northampton | 35 min |
| Apr 26, 5:38 PM EDT | Special Weather Statement | PHI | Chester | 22 min |
| Apr 26, 6:37 PM EDT | Special Weather Statement | PHI | Philadelphia | 38 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.