Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 9, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 15, 2019, 2:46 AM EDT for 4 states. It was in force for 44 min. 7 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
- Apr 15, 2019, 2:46 AM EDT (06:46 UTC)
- Expired
- Apr 15, 2019, 3:30 AM EDT
- In force
- 44 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties New Castle County, DE, Cecil County, MD, Gloucester County, NJ, Salem County, NJ, Delaware County, PA
The radar
The Dover AFB radar (KDOX), 87 km from the middle of the area, began a volume at 06:48 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 |
|---|---|---|---|
| Apr 15, 2:46 AM EDT | TSTM WND DMG | 3 Nw Glasgow, DE | REPORT OF A TREE CAUSING A POWER OUTAGE AT A HOME ALONG THE MD-DE BORDER. |
| Apr 15, 3:00 AM EDT | TSTM WND DMG | 1 Ssw Bohemias Mills, MD | TREES REPORTED DOWN NEAR WARWICK. TIME ESTIMATED FROM RADAR. |
| Apr 15, 3:11 AM EDT | TSTM WND GST 60 | Brookhaven, PA | |
| Apr 15, 3:20 AM EDT | TSTM WND DMG | Port Penn, DE | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM PORT PENN. THE INTERSECTION OF W MARKET ST. AND DELAWARE CITY PORT PENN RD IS CLOSED DUE TO A UTILITY POLE AND TREE IN THE ROADWAY. TIME ESTIMATED FROM RADAR. |
| Apr 15, 3:20 AM EDT | TSTM WND DMG | Port Penn, DE | THE INTERSECTION OF W MARKET ST. AND DELAWARE CITY PORT PENN RD IS CLOSED DUE TO A UTILITY POLE AND TREE IN THE ROADWAY. TIME ESTIMATED FROM RADAR. |
| Apr 15, 3:20 AM EDT | TSTM WND GST 56 | Port Penn, DE | |
| Apr 15, 3:25 AM EDT | TSTM WND GST 64 | Logan Twp., NJ |
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 |
|---|---|---|---|
| Apr 15, 1:05 AM EDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 6.8 hours before the alert went out and 166 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
- 243 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 961 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 326 m²/s²
- 0-3 km storm-relative helicity
- 478 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 3.3
The text
As transmitted.
903
WUUS51 KPHI 150646
SVRPHI
DEC003-MDC015-NJC015-033-PAC045-150730-
/O.NEW.KPHI.SV.W.0009.190415T0646Z-190415T0730Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
246 AM EDT MON APR 15 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Central New Castle County in northern Delaware...
Southeastern Cecil County in northeastern Maryland...
Northwestern Salem County in southern New Jersey...
West central Gloucester County in southern New Jersey...
South central Delaware County in southeastern Pennsylvania...
* Until 330 AM EDT.
* At 246 AM EDT, a severe thunderstorm was located over Brantwood, or
over Elkton, moving northeast at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Wilmington, Newark, Middletown, Elkton, Chester, Pennsville,
Carneys Point, Elsmere, New Castle, Penns Grove, Salem, North East,
Woodstown, Swedesboro, Delaware City, Newport, Arden, Stanton,
Glasgow and Talleyville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted, act quickly and move to a
place of safety inside a sturdy structure such as a basement or small
interior room.
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Mount Holly NJ.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
A tornado watch remains in effect until 700 AM EDT for northern
Delaware...northeastern Maryland...southern New Jersey...and
southeastern Pennsylvania.
LAT...LON 3940 7585 3959 7596 3990 7540 3966 7522
TIME...MOT...LOC 0646Z 235DEG 39KT 3957 7582
HAIL...<.75IN
WIND...60MPH
$$
MPS1 follow-up statement
537
WWUS51 KPHI 150725
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
325 AM EDT MON APR 15 2019
DEC003-MDC015-NJC015-033-PAC045-150732-
/O.EXP.KPHI.SV.W.0009.000000T0000Z-190415T0730Z/
New Castle DE-Cecil MD-Salem NJ-Gloucester NJ-Delaware PA-
325 AM EDT MON APR 15 2019
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL NEW CASTLE...
SOUTHEASTERN CECIL...NORTHWESTERN SALEM...WEST CENTRAL GLOUCESTER AND
SOUTH CENTRAL DELAWARE COUNTIES WILL EXPIRE AT 330 AM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
A tornado watch remains in effect until 700 AM EDT for northern
Delaware...northeastern Maryland...southern New Jersey...and
southeastern Pennsylvania.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
in Mount Holly NJ.
Remember, a Severe Thunderstorm Warning still remains in effect for
portions of New Castle, Cecil, Salem, Gloucester, and Delaware
counties until 3:45 am.
Remember, a Tornado Warning still remains in effect for portions of
New Castle, Salem and Gloucester counties until 3:45 am.
LAT...LON 3940 7585 3959 7596 3990 7540 3966 7522
TIME...MOT...LOC 0722Z 235DEG 39KT 3979 7541
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 9:19 PM EDT | Areal Flood Advisory | PHI | Berks | 3 hr |
| Apr 15, 12:03 AM EDT | Special Weather Statement | PHI | Monroe | 27 min |
| Apr 15, 1:10 AM EDT | Special Weather Statement | PHI | Schuylkill | 50 min |
| Apr 15, 1:26 AM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 4 hr |
| Apr 15, 1:28 AM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 47 min |
| Apr 15, 1:43 AM EDT | Areal Flood Advisory | PHI | Berks | 4 hr |
| Apr 15, 1:58 AM EDT | Special Weather Statement | PHI | Berks, Carbon, Monroe | 47 min |
| Apr 15, 2:21 AM EDT | Areal Flood Advisory | PHI | Lehigh, Northampton | 4 hr |
| Apr 15, 2:28 AM EDT | Special Weather Statement | PHI | Chester | 32 min |
| Apr 15, 2:34 AM EDT | Special Weather Statement | PHI | Berks, Chester, Lehigh, Northampton | 41 min |
| Apr 15, 3:03 AM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Montgomery, Northampton | 20 min |
| Apr 15, 3:11 AM EDT | Special Weather Statement | PHI | Bucks, Montgomery, Northampton | 49 min |
| Apr 15, 3:19 AM EDT | Tornado Warning | PHI | Delaware, Montgomery, Philadelphia | 26 min |
| Apr 15, 3:19 AM EDT | Wind Advisory | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 18 hr |
| Apr 15, 3:27 AM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Montgomery | 32 min |
| Apr 15, 3:39 AM EDT | Severe Thunderstorm Warning | PHI | Bucks, Philadelphia | 37 min |
| Apr 15, 3:59 AM EDT | Areal Flood Advisory | PHI | Montgomery | 4 hr |
| Apr 15, 12:31 AM EDT | Marine Dense Fog Advisory | PHI | 5 hr | |
| Apr 15, 2:47 AM EDT | Special Marine Warning | PHI | 58 min | |
| Apr 15, 3:00 AM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 4 hr |
| Apr 15, 3:07 AM EDT | Severe Thunderstorm Warning | PHI | Camden, Cumberland, Gloucester, Salem | 38 min |
| Apr 15, 3:08 AM EDT | Special Marine Warning | PHI | 67 min | |
| Apr 15, 3:41 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more | 64 min |
| Apr 15, 3:42 AM EDT | Special Marine Warning | PHI | 63 min | |
| Apr 15, 3:57 AM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Morris, Somerset | 13 min |
| Apr 15, 4:16 AM EDT | Special Marine Warning | PHI | 59 min | |
| Apr 15, 4:40 AM EDT | Special Marine Warning | PHI | 65 min | |
| Apr 15, 4:47 AM EDT | Special Weather Statement | PHI | Atlantic | 28 min |
| Apr 15, 5:07 AM EDT | Special Marine Warning | PHI | 53 min | |
| Apr 15, 5:30 AM EDT | Coastal Flood Statement | PHI | Ocean | 7 hr |
| Apr 15, 6:59 AM EDT | Areal Flood Warning | PHI | Hunterdon | 4 hr |
| Apr 15, 3:21 AM EDT | Tornado Warning | PHI | Kent | 24 min |
| Apr 15, 3:28 AM EDT | Severe Thunderstorm Warning | PHI | Sussex | 47 min |
| Apr 15, 3:31 AM EDT | Tornado Warning | PHI | Sussex | 29 min |
| Apr 15, 3:36 AM EDT | Tornado Warning | PHI | Kent, Sussex | 24 min |
| Apr 15, 4:19 AM EDT | Special Weather Statement | PHI | Sussex | 26 min |
| Apr 15, 2:15 AM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 45 min |
| Apr 15, 2:25 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 50 min |
| Apr 15, 2:43 AM EDT | Tornado Warning | PHI | Caroline, Kent, Queen Anne's | 32 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2019Severe Thunderstorm Warnings in Pennsylvania, 2019Severe Thunderstorm Warnings in Delaware, 2019Every severe thunderstorm warning in 2019
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.