Alert archive / New Jersey / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 98, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 14, 2017, 3:54 PM EDT for Cumberland County, Gloucester County, Salem County, New Jersey; Kent County, New Castle County, Delaware. It was in force for 66 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
- Jul 14, 2017, 3:54 PM EDT (19:54 UTC)
- Expired
- Jul 14, 2017, 5:00 PM EDT
- In force
- 66 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Kent County, DE, New Castle County, DE, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 69 km from the middle of the area, began a volume at 19:58 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 14, 4:33 PM EDT | TSTM WND DMG | 1 Sw Clayville, NJ | WIRES BLOWN DOWN AT HIGHWAY 55 AND HIGHWAY 47. TIME ESTIMATED. |
| Jul 14, 4:33 PM EDT | TSTM WND DMG | Roosevelt Park, NJ | DOWNED TREE BLOCKING NJ47. TIME ESTIMATED. |
| Jul 14, 4:33 PM EDT | TSTM WND DMG | Roosevelt Park, NJ | DOWNED TREE BLOCKING NJ 47 WITH POWER LINES ALSO DOWN. TIME ESTIMATED. |
| Jul 14, 4:33 PM EDT | TSTM WND GST 50 | Bridgeton, NJ | |
| Jul 14, 4:33 PM EDT | TSTM WND GST 58 | Millville Muni Airport, NJ | |
| Jul 14, 4:36 PM EDT | TSTM WND GST 50 | 2 N Newport, 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 |
|---|---|---|---|
| Jul 14, 1:40 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 7.9 hours before the alert went out and 167 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
- 908 J/kg
- Mixed-layer CIN
- -100 J/kg
- Mixed-layer LCL
- 959 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
684
WUUS51 KPHI 141954
SVRPHI
DEC001-003-NJC011-015-033-142100-
/O.NEW.KPHI.SV.W.0098.170714T1954Z-170714T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
354 PM EDT FRI JUL 14 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern New Castle County in northern Delaware...
Northeastern Kent County in central Delaware...
Cumberland County in southern New Jersey...
Southern Salem County in southern New Jersey...
Southern Gloucester County in southern New Jersey...
* Until 500 PM EDT
* At 353 PM EDT, severe thunderstorms were located along a line
extending from near Alloway to near Hope Creek to near Green
Spring, moving southeast at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect damage to
trees and power lines.
* Severe thunderstorms will be near,
Bridgeton, Seabrook Farms, Newport Meadows and Olivet around 405
PM EDT.
Shiloh around 410 PM EDT.
Vineland, Greenwich and Rosenhayn around 415 PM EDT.
Millville and Newfield around 420 PM EDT.
Cedarville, South Vineland and Fairton around 430 PM EDT.
Newport around 435 PM EDT.
Cumberland and Dividing Creek around 445 PM EDT.
Laurel Lake, Fortesque and Port Norris around 450 PM EDT.
Other locations impacted by these severe thunderstorms include
Centerton, Odessa and Chambersville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3959 7530 3955 7498 3953 7497 3952 7499
3947 7492 3937 7485 3919 7521 3939 7549
3927 7537 3911 7537 3947 7573
TIME...MOT...LOC 1953Z 296DEG 23KT 3955 7530 3946 7548 3940 7561
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
Robertson2 follow-up statements
166
WWUS51 KPHI 142035
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
435 PM EDT FRI JUL 14 2017
DEC001-003-142045-
/O.CAN.KPHI.SV.W.0098.000000T0000Z-170714T2100Z/
New Castle DE-Kent DE-
435 PM EDT FRI JUL 14 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NEW CASTLE AND
NORTHEASTERN KENT COUNTIES IS CANCELLED...
The storms which prompted the warning have weakend. Therefore, the
warning has been cancelled. However heavy rain and gusty winds
remain possible with other storms.
A severe thunderstorm watch remains in effect until 900 PM EDT for
southern New Jersey.
LAT...LON 3936 7487 3919 7520 3923 7526 3936 7544
3942 7528 3956 7504 3955 7498 3953 7497
3952 7499 3947 7492 3938 7485
TIME...MOT...LOC 2035Z 296DEG 23KT 3943 7499 3934 7517 3928 7530
$$
NJC011-015-033-142100-
/O.CON.KPHI.SV.W.0098.000000T0000Z-170714T2100Z/
Cumberland NJ-Salem NJ-Gloucester NJ-
435 PM EDT FRI JUL 14 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR CUMBERLAND...EAST CENTRAL SALEM AND SOUTHERN GLOUCESTER
COUNTIES...
At 435 PM EDT, severe thunderstorms were located along a line
extending from near South Vineland to Cedarville to 6 miles west of
Newport, moving southeast at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect damage to
trees and power lines.
Locations impacted include...
Vineland, Millville, Bridgeton, Cumberland, Buena, Laurel Lake,
Newfield, Greenwich, Newport, Dividing Creek, Fairton, Cedarville,
Port Elizabeth, Fortesque, South Vineland, Rosenhayn and Port Norris.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3936 7487 3919 7520 3923 7526 3936 7544
3942 7528 3956 7504 3955 7498 3953 7497
3952 7499 3947 7492 3938 7485
TIME...MOT...LOC 2035Z 296DEG 23KT 3943 7499 3934 7517 3928 7530
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
Robertson546
WWUS51 KPHI 142057
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
457 PM EDT FRI JUL 14 2017
NJC011-015-033-142105-
/O.EXP.KPHI.SV.W.0098.000000T0000Z-170714T2100Z/
Cumberland NJ-Salem NJ-Gloucester NJ-
457 PM EDT FRI JUL 14 2017
...THE SEVERE THUNDERSTORM WARNING FOR CUMBERLAND...EAST CENTRAL
SALEM AND SOUTHERN GLOUCESTER COUNTIES WILL EXPIRE AT 500 PM EDT...
This Severe Thunderstorm Warning will expire at 5 pm. However a
Severe Thunderstorm Warning still remains in effect for
Atlatnic...Cape May...and Cumberland counties.
A severe thunderstorm watch remains in effect until 900 PM EDT for
southern New Jersey.
LAT...LON 3936 7487 3919 7520 3923 7526 3936 7544
3942 7528 3956 7504 3955 7498 3953 7497
3952 7499 3947 7492 3938 7485
TIME...MOT...LOC 2055Z 296DEG 23KT 3937 7484 3928 7502 3922 7515
$$
RobertsonThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 8:17 PM EDT | Special Weather Statement | PHI | Camden | 43 min |
| Jul 13, 8:26 PM EDT | Special Weather Statement | PHI | Cape May | 34 min |
| Jul 13, 8:27 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more | 4 hr |
| Jul 13, 8:49 PM EDT | Special Weather Statement | PHI | Cumberland | 26 min |
| Jul 13, 8:51 PM EDT | Special Weather Statement | PHI | Atlantic | 54 min |
| Jul 13, 9:07 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland, Gloucester, Salem | 53 min |
| Jul 13, 9:46 PM EDT | Special Weather Statement | PHI | Atlantic | 14 min |
| Jul 13, 9:50 PM EDT | Special Marine Warning | PHI | 115 min | |
| Jul 13, 9:57 PM EDT | Special Weather Statement | PHI | Cape May | 33 min |
| Jul 13, 10:42 PM EDT | Special Marine Warning | PHI | 93 min | |
| Jul 14, 7:21 AM EDT | Areal Flood Advisory | PHI | Morris, Sussex, Warren | 3 hr |
| Jul 14, 11:40 AM EDT | Flash Flood Watch | PHI | Atlantic, Camden, Cape May, Cumberland, Gloucester, Salem | 11 hr |
| Jul 14, 2:57 PM EDT | Areal Flood Advisory | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Ocean and 1 more | 3 hr |
| Jul 14, 3:07 PM EDT | Special Marine Warning | PHI | 53 min | |
| Jul 14, 3:18 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 12 min |
| Jul 14, 3:23 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 67 min |
| Jul 14, 3:25 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Cumberland, Gloucester, Ocean, Salem | 4 hr |
| Jul 14, 3:34 PM EDT | Flash Flood Warning | PHI | Gloucester, Salem | 3 hr |
| Jul 14, 3:35 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Gloucester | 55 min |
| Jul 14, 3:43 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester, Salem | 47 min |
| Jul 14, 3:47 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Ocean | 3 hr |
| Jul 14, 4:12 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May | 63 min |
| Jul 14, 4:13 PM EDT | Flash Flood Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more | 3 hr |
| Jul 14, 4:18 PM EDT | Special Marine Warning | PHI | 57 min | |
| Jul 14, 4:25 PM EDT | Special Marine Warning | PHI | 95 min | |
| Jul 14, 4:44 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland, Gloucester, Salem | 61 min |
| Jul 14, 4:54 PM EDT | Special Marine Warning | PHI | 66 min | |
| Jul 14, 5:47 PM EDT | Special Weather Statement | PHI | Cape May | 13 min |
| Jul 14, 5:53 PM EDT | Special Marine Warning | PHI | 52 min | |
| Jul 14, 6:32 PM EDT | Special Marine Warning | PHI | 88 min | |
| Jul 14, 7:08 PM EDT | Special Marine Warning | PHI | 97 min | |
| Jul 14, 7:28 PM EDT | Areal Flood Advisory | PHI | Atlantic, Camden, Cape May, Cumberland, Gloucester, Salem | 3 hr |
| Jul 13, 8:09 PM EDT | Special Weather Statement | PHI | Kent | 36 min |
| Jul 13, 8:29 PM EDT | Special Weather Statement | PHI | Kent | 31 min |
| Jul 13, 10:03 PM EDT | Special Weather Statement | PHI | Sussex | 27 min |
| Jul 13, 10:15 PM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 4 hr |
| Jul 13, 10:39 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 51 min |
| Jul 14, 9:02 AM EDT | Special Weather Statement | PHI | New Castle | 28 min |
| Jul 14, 12:06 PM EDT | Heat Advisory | PHI | Kent, Sussex | 7 hr |
| Jul 14, 2:14 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Jul 14, 2:31 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 59 min |
| Jul 14, 2:53 PM EDT | Flash Flood Warning | PHI | New Castle | 3 hr |
| Jul 14, 5:14 PM EDT | Areal Flood Advisory | PHI | Kent | 3 hr |
| Jul 14, 5:24 PM EDT | Special Weather Statement | PHI | Sussex | 36 min |
| Jul 14, 5:30 PM EDT | River Flood Warning | PHI | New Castle | 7 hr |
| Jul 14, 5:40 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 65 min |
| Jul 14, 5:51 PM EDT | Special Weather Statement | PHI | Sussex | 39 min |
| Jul 14, 6:10 PM EDT | Flash Flood Warning | PHI | Kent | 3 hr |
| Jul 14, 6:20 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 40 min |
| Jul 14, 6:32 PM EDT | Areal Flood Advisory | PHI | Sussex | 4 hr |
| Jul 14, 6:48 PM EDT | Special Weather Statement | PHI | Sussex | 42 min |
| Jul 14, 7:15 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 60 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2017Severe Thunderstorm Warnings in Delaware, 2017Every severe thunderstorm warning in 2017
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.