Alert archive / Delaware / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 67, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 4, 2020, 10:12 PM EDT for Kent County, New Castle County, Delaware; Cumberland County, Salem County, New Jersey; Cecil County, Kent County, Maryland. It was in force for 33 min. 6 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
- Jun 4, 2020, 10:12 PM EDT (02:12 UTC)
- Expired
- Jun 4, 2020, 10:45 PM EDT
- In force
- 33 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, New Castle County, DE, Cecil County, MD, Kent County, MD, Cumberland County, NJ, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 70 km from the middle of the area, began a volume at 02:13 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 |
|---|---|---|---|
| Jun 4, 10:12 PM EDT | TSTM WND DMG | 1 W Middletown, DE | DOWNED TREE AND WIRES NEAR THE INTERSECTION OF MAIN STREET AND MIDDLETOWN WARWICK ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 4, 10:13 PM EDT | TSTM WND DMG | 3 Sse Delaney Corner, DE | LARGE TREE AND POWER LINES DOWN. TIME ESTIMATED FROM RADAR. |
| Jun 4, 10:20 PM EDT | TSTM WND GST 64 | 4 Ssw Elsinboro Twp, NJ | NJWXNET SITE NJ77. |
| Jun 4, 10:33 PM EDT | TSTM WND DMG | Alloway, NJ | TREES AND WIRES WERE DOWNED IN ALLOWAY. TIME ESTIMATED FROM RADAR. |
| Jun 4, 10:35 PM EDT | HAIL 0.7 | 1 Ese Mcdonough, DE | MPING REPORT. |
| Jun 4, 10:38 PM EDT | TSTM WND DMG | Penns Grove, NJ | TREES AND WIRES WERE DOWNED IN PENNS GROVE. TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.2 hours before the alert went out and 168 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
- 1848 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 1057 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.3
The text
As transmitted.
616
WUUS51 KPHI 050212
SVRPHI
DEC001-003-MDC015-029-NJC011-033-050245-
/O.NEW.KPHI.SV.W.0067.200605T0212Z-200605T0245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1012 PM EDT Thu Jun 4 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
New Castle County in northern Delaware...
Northwestern Kent County in central Delaware...
Northeastern Kent County in northeastern Maryland...
Eastern Cecil County in northeastern Maryland...
West central Cumberland County in southern New Jersey...
Western Salem County in southern New Jersey...
* Until 1045 PM EDT.
* At 1012 PM EDT, a severe thunderstorm was located over Middletown,
moving east at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Wilmington, Newark, Middletown, Elkton, Pennsville, Smyrna, Carneys
Point, Elsmere, New Castle, Penns Grove, Salem, Alloway, Clayton,
Quinton, Delaware City, Newport, Greenwich, Shiloh, Warwick and
Barksdale.
This includes the following highways...
Interstate 295 in New Jersey between mile markers 0 and 6.
Interstate 95 in Maryland between mile markers 103 and 109.
New Jersey Turnpike near exit 1.
Interstate 95 in Delaware between mile markers 0 and 14.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
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.
&&
LAT...LON 3966 7591 3978 7543 3931 7523 3921 7575
3924 7575 3925 7579 3926 7579
TIME...MOT...LOC 0212Z 253DEG 32KT 3945 7572
HAIL...0.75IN
WIND...60MPH
$$
MPS2 follow-up statements
031
WWUS51 KPHI 050228
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1028 PM EDT Thu Jun 4 2020
MDC015-029-050238-
/O.CAN.KPHI.SV.W.0067.000000T0000Z-200605T0245Z/
Kent MD-Cecil MD-
1028 PM EDT Thu Jun 4 2020
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KENT AND EASTERN
CECIL COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3977 7549 3978 7543 3937 7525 3932 7523
3931 7524 3925 7556 3971 7572
TIME...MOT...LOC 0228Z 253DEG 33KT 3949 7552
$$
DEC001-003-NJC011-033-050245-
/O.CON.KPHI.SV.W.0067.000000T0000Z-200605T0245Z/
New Castle DE-Kent DE-Cumberland NJ-Salem NJ-
1028 PM EDT Thu Jun 4 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR CENTRAL NEW CASTLE...NORTH CENTRAL KENT...WEST CENTRAL CUMBERLAND
AND WESTERN SALEM COUNTIES...
At 1028 PM EDT, a severe thunderstorm was located over Hope Creek, or
10 miles east of Middletown, moving east at 40 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Wilmington, Pennsville, Carneys Point, Elsmere, New Castle, Penns
Grove, Salem, Alloway, Quinton, Delaware City, Newport, Greenwich,
Shiloh, Stanton, Woodland Beach, Bear, Hancocks Bridge, Newport
Meadows, Port Penn and Wilmington Manor.
This includes the following highways...
Interstate 295 in New Jersey between mile markers 0 and 6.
New Jersey Turnpike near exit 1.
Interstate 95 in Delaware between mile markers 5 and 14.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
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.
&&
LAT...LON 3977 7549 3978 7543 3937 7525 3932 7523
3931 7524 3925 7556 3971 7572
TIME...MOT...LOC 0228Z 253DEG 33KT 3949 7552
HAIL...0.75IN
WIND...60MPH
$$
MPS413
WWUS51 KPHI 050237
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1037 PM EDT Thu Jun 4 2020
DEC001-003-NJC011-033-050246-
/O.EXP.KPHI.SV.W.0067.000000T0000Z-200605T0245Z/
New Castle DE-Kent DE-Cumberland NJ-Salem NJ-
1037 PM EDT Thu Jun 4 2020
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL NEW CASTLE...NORTH
CENTRAL KENT...WEST CENTRAL CUMBERLAND AND WESTERN SALEM COUNTIES
WILL EXPIRE AT 1045 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However, gusty
winds and heavy rain are still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
Remember, a Severe Thunderstorm Warning still remains in effect for
portions of Salem and Cumberland counties until 11:30 pm.
LAT...LON 3977 7549 3978 7543 3937 7525 3932 7523
3931 7524 3925 7556 3971 7572
TIME...MOT...LOC 0236Z 253DEG 32KT 3951 7544
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 9:54 PM EDT | Special Weather Statement | PHI | New Castle | 36 min |
| Jun 4, 10:31 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 46 min |
| Jun 4, 10:32 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 42 min |
| Jun 5, 9:47 AM EDT | Flash Flood Watch | PHI | New Castle | 12 hr |
| Jun 5, 5:19 PM EDT | Areal Flood Advisory | PHI | New Castle | 4 hr |
| Jun 4, 10:07 PM EDT | Special Marine Warning | PHI | 53 min | |
| Jun 4, 10:52 PM EDT | Special Marine Warning | PHI | 38 min | |
| Jun 4, 10:59 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more | 34 min |
| Jun 5, 12:06 AM EDT | Special Marine Warning | PHI | 54 min | |
| Jun 5, 3:24 PM EDT | Special Weather Statement | PHI | Mercer, Middlesex, Monmouth | 36 min |
| Jun 5, 3:57 PM EDT | Special Weather Statement | PHI | Mercer, Middlesex, Monmouth | 33 min |
| Jun 5, 4:36 PM EDT | Special Weather Statement | PHI | Monmouth | 24 min |
| Jun 5, 4:55 PM EDT | Special Weather Statement | PHI | Monmouth, Ocean | 50 min |
| Jun 5, 5:01 PM EDT | Areal Flood Advisory | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset | 4 hr |
| Jun 5, 5:27 PM EDT | Flash Flood Warning | PHI | Monmouth, Ocean | 3 hr |
| Jun 4, 9:15 PM EDT | Special Weather Statement | PHI | Cecil, Kent, Queen Anne's, Talbot | 45 min |
| Jun 4, 9:30 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 28 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 2020Severe Thunderstorm Warnings in New Jersey, 2020Severe Thunderstorm Warnings in Maryland, 2020Every severe thunderstorm warning in 2020
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.