Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 387, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 4, 2019, 7:24 PM EDT for Cumberland County, Salem County, New Jersey; Kent County, New Castle County, Delaware; Cecil County, Maryland. It was in force for 51 min. 1 report 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
- Sep 4, 2019, 7:24 PM EDT (23:24 UTC)
- Expired
- Sep 4, 2019, 8:15 PM EDT
- In force
- 51 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Kent County, DE, New Castle County, DE, Cecil 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 23:23 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 |
|---|---|---|---|
| Sep 4, 7:45 PM EDT | TSTM WND GST 45 | 4 Ssw Elsinboro Twp, NJ | LOWER ALLOWAYS CREEK NJ WEATHER NET STATION. |
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 12:00Z, 11.4 hours before the alert went out and 169 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
- 174 J/kg
- Mixed-layer CIN
- -178 J/kg
- Mixed-layer LCL
- 993 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
410
WUUS51 KPHI 042324
SVRPHI
DEC001-003-MDC015-NJC011-033-050015-
/O.NEW.KPHI.SV.W.0387.190904T2324Z-190905T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
724 PM EDT Wed Sep 4 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern New Castle County in northern Delaware...
North central Kent County in central Delaware...
Southeastern Cecil County in northeastern Maryland...
Northwestern Cumberland County in southern New Jersey...
Southwestern Salem County in southern New Jersey...
* Until 815 PM EDT.
* At 724 PM EDT, a severe thunderstorm was located over Mount
Pleasant, or over Middletown, moving east at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
Bridgeton, Middletown, Alloway, Quinton, Greenwich, Shiloh,
Warwick, Mount Pleasant, Woodland Beach, Bohemias Mills, Hancocks
Bridge, Newport Meadows, Port Penn, Hope Creek, Cayots, Seabrook
Farms, Townsend, Chesapeake City, Odessa and Chambersville.
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 3955 7583 3955 7557 3954 7556 3954 7554
3955 7553 3955 7521 3929 7529 3931 7531
3935 7534 3931 7542 3929 7544 3944 7589
TIME...MOT...LOC 2324Z 283DEG 22KT 3948 7573
HAIL...1.00IN
WIND...60MPH
$$
Staarmann2 follow-up statements
593
WWUS51 KPHI 042345
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
745 PM EDT Wed Sep 4 2019
DEC001-MDC015-042355-
/O.CAN.KPHI.SV.W.0387.000000T0000Z-190905T0015Z/
Kent DE-Cecil MD-
745 PM EDT Wed Sep 4 2019
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL KENT AND
SOUTHEASTERN CECIL COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3954 7573 3955 7557 3949 7559 3945 7558
3947 7554 3951 7556 3950 7555 3949 7553
3955 7553 3955 7521 3929 7529 3935 7534
3934 7535 3946 7551 3944 7558 3939 7552
3935 7553 3943 7575
TIME...MOT...LOC 2345Z 282DEG 19KT 3947 7568
$$
DEC003-NJC011-033-050015-
/O.CON.KPHI.SV.W.0387.000000T0000Z-190905T0015Z/
New Castle DE-Cumberland NJ-Salem NJ-
745 PM EDT Wed Sep 4 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHWESTERN NEW CASTLE...NORTHWESTERN CUMBERLAND AND
SOUTHWESTERN SALEM COUNTIES...
At 745 PM EDT, a severe thunderstorm was located over Middletown,
moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Bridgeton, Middletown, Alloway, Quinton, Greenwich, Shiloh, Hancocks
Bridge, Newport Meadows, Hope Creek, Mount Pleasant, Seabrook Farms
and Odessa.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
&&
LAT...LON 3954 7573 3955 7557 3949 7559 3945 7558
3947 7554 3951 7556 3950 7555 3949 7553
3955 7553 3955 7521 3929 7529 3935 7534
3934 7535 3946 7551 3944 7558 3939 7552
3935 7553 3943 7575
TIME...MOT...LOC 2345Z 282DEG 19KT 3947 7568
HAIL...1.00IN
WIND...60MPH
$$
Staarmann157
WWUS51 KPHI 050007
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
807 PM EDT Wed Sep 4 2019
DEC003-NJC011-033-050016-
/O.EXP.KPHI.SV.W.0387.000000T0000Z-190905T0015Z/
New Castle DE-Cumberland NJ-Salem NJ-
807 PM EDT Wed Sep 4 2019
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NEW CASTLE...
NORTHWESTERN CUMBERLAND AND SOUTHWESTERN SALEM COUNTIES WILL EXPIRE
AT 815 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 3954 7573 3955 7557 3949 7559 3945 7558
3947 7554 3951 7556 3950 7555 3949 7553
3955 7553 3955 7521 3929 7529 3935 7534
3934 7535 3946 7551 3944 7558 3939 7552
3935 7553 3943 7575
TIME...MOT...LOC 0006Z 283DEG 22KT 3944 7553
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 4:00 PM EDT | Special Weather Statement | PHI | Passaic | 30 min |
| Sep 4, 6:02 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 43 min |
| Sep 4, 6:57 PM EDT | Special Weather Statement | PHI | Burlington, Camden | 33 min |
| Sep 4, 7:11 PM EDT | Special Weather Statement | PHI | Burlington | 34 min |
| Sep 4, 7:12 PM EDT | Special Weather Statement | PHI | Ocean | 33 min |
| Sep 4, 7:16 PM EDT | Special Weather Statement | PHI | Monmouth | 14 min |
| Sep 4, 7:19 PM EDT | Special Weather Statement | PHI | Burlington | 41 min |
| Sep 4, 7:26 PM EDT | Special Marine Warning | PHI | 64 min | |
| Sep 4, 7:47 PM EDT | Special Weather Statement | PHI | Camden | 43 min |
| Sep 4, 7:59 PM EDT | Special Weather Statement | PHI | Ocean | 46 min |
| Sep 4, 7:15 PM EDT | Special Weather Statement | PHI | New Castle | 30 min |
| Sep 4, 6:34 PM EDT | Special Weather Statement | PHI | Cecil | 26 min |
| Sep 4, 7:50 PM EDT | Special Weather Statement | PHI | Cecil | 40 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2019Severe Thunderstorm Warnings in Delaware, 2019Severe Thunderstorm Warnings in Maryland, 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.