Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 38, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 21, 2020, 1:49 PM EDT for 4 states. It was in force for 56 min. 36 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 21, 2020, 1:49 PM EDT (17:49 UTC)
- Expired
- Apr 21, 2020, 2:45 PM EDT
- In force
- 56 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, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ, Chester County, PA, Delaware County, PA, Philadelphia County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 21, 1:53 PM EDT | HAIL 0.25 | Wilmington, DE | PEA SIZE HAIL IN WILMINGTON, DE. |
| Apr 21, 1:54 PM EDT | TSTM WND DMG | 1 N Holiday Hills, DE | A COUPLE OF REPORTS OF DOWNED WIRES. TIME ESTIMATED FROM RADAR. |
| Apr 21, 1:55 PM EDT | TSTM WND GST 40 | 1 Sw Manor Park, DE | REPORTED AT KILG. |
| Apr 21, 1:59 PM EDT | HAIL 0.25 | Newark, DE | TRAINED SPOTTER REPORTS PEA SIZE HAIL IN NEWARK, DE. |
| Apr 21, 2:00 PM EDT | TSTM WND GST 66 | 1 W Logan Twp., NJ | NJ MESONET SITE REPORTED 66 MPH WIND GUST. |
| Apr 21, 2:05 PM EDT | TSTM WND GST 61 | 1 Se Tinicum Twp, PA | PHL ITWS MEASURED 61 MPH AT 2:05 PM. |
| Apr 21, 2:05 PM EDT | TSTM WND GST 61 | 1 W Philadelphia Intl, PA | 61 MPH MEASURED WIND GUST AT KPHL ITWS. |
| Apr 21, 2:06 PM EDT | HAIL 0.75 | Stanton, DE | DIME SIZE HAIL REPORTED IN STANTON BY A TRAINED SPOTTER. |
| Apr 21, 2:07 PM EDT | TSTM WND DMG | Brooklawn, NJ | TRAINED SPOTTER REPORTS TREES AND POWER LINES DOWN IN BROOKLAWN, NJ. |
| Apr 21, 2:07 PM EDT | TSTM WND GST 40 | Rock Manor, DE | DOT SITE MEASURED 40 MPH. |
| Apr 21, 2:07 PM EDT | TSTM WND GST 59 | 1 S Eastwick, PA | 59 MPH WIND GUST MEASURED AT KPHL. |
| Apr 21, 2:07 PM EDT | TSTM WND GST 59 | Philadelphia Internatio, PA | 59 MPH WIND GUST MEASURED AT KPHL. THIS CORRECTS A PREVIOUS LSR. |
| Apr 21, 2:08 PM EDT | TSTM WND DMG | Landlith, DE | A COUPLE OF REPORTS OF TREE LIMBS AND WIRES DOWN IN THE AREA. TIME ESTIMATED FROM RADAR. |
| Apr 21, 2:10 PM EDT | TSTM WND DMG | Haddonfield, NJ | A SWATH OF WIND DAMAGE WAS REPORTED FROM BROOKLAWN TO EAST OF HADDONFIELD. NUMEROUS POWER OUTAGES IN THE AREA, WITH SEVERAL TREES AND POWER LINES DOWNED. TIME ESTIMATED FROM RADAR. |
| Apr 21, 2:10 PM EDT | TSTM WND GST 44 | 2 Ssw Palmyra, NJ | NJ MESONET MEASURES 44 MPH. |
| Apr 21, 2:10 PM EDT | TSTM WND GST 51 | 1 Wnw Westville, NJ | NJ MESONET MEASURES 51 MPH. |
| Apr 21, 2:14 PM EDT | TSTM WND DMG | 1 W Mt. Ephraim, NJ | MPING REPORT OF TREES UPROOTED AT THIS LOCATION. TIME ESTIMATED FROM RADAR. |
| Apr 21, 2:15 PM EDT | TSTM WND DMG | Haddon Heights, NJ | MULTIPLE TREES DOWN IN HADDON HEIGHTS, NJ. TIME ESTIMATED FROM RADAR. |
| Apr 21, 2:15 PM EDT | HAIL 0.25 | Cherry Hill Twp, NJ | PEA SIZE HAIL REPORTED IN CHERRY HILL. |
| Apr 21, 2:16 PM EDT | TSTM WND DMG | 1 W Glendora, NJ | DOWNED POLE AND WIRES ON STATE HIGHWAY 41 NEAR CLEMENTS BRIDGE ROAD. |
| Apr 21, 2:16 PM EDT | TSTM WND DMG | 1 W Glendora, NJ | DOWNED POLE AND WIRES ON STATE HIGHWAY 41 NEAR CLEMENTS BRIDGE ROAD. TIME ESTIMATED FROM RADAR. |
| Apr 21, 2:20 PM EDT | TSTM WND DMG | 1 N Ashland, NJ | DOWNED TREE ON INTERSTATE 295 SOUTHBOUND RAMP FROM HADDONFIELD BERLIN ROAD. TIME ESTIMATED FROM RADAR. |
| Apr 21, 2:20 PM EDT | TSTM WND DMG | Woolwich Twp, NJ | REPORTS OF POWER LINES DOWN. |
| Apr 21, 2:20 PM EDT | TSTM WND GST 56 | 1 S Odessa, DE | 56 MPH WIND GUST REPORTED BY DELDOT MESONET SITE. |
| Apr 21, 2:21 PM EDT | TSTM WND DMG | Haddon Heights, NJ | SEVERAL PHOTOS OF TREES DOWN IN THE AREA. TIME ESTIMATED FROM RADAR. |
| Apr 21, 2:23 PM EDT | HAIL 0.5 | Glassboro, NJ | |
| Apr 21, 2:24 PM EDT | HAIL 0.5 | Washington Twp, NJ | 0.50 INCH HAIL REPORTED BY PUBLIC. TIME ESTIMATED FROM RADAR. |
| Apr 21, 2:25 PM EDT | TSTM WND DMG | Haddonfield, NJ | DOZENS OF REPORTS OF POWER LINES AND TREES DOWN IN A SWATH FROM BROOKLAWN TO HADDONFIELD. |
| Apr 21, 2:25 PM EDT | MARINE TSTM WIND 55 | 4 Ssw Elsinboro Twp, NJ | NJ MESONET SITE MEASURES A 55 MPH WIND GUST. |
| Apr 21, 2:30 PM EDT | HAIL 0.25 | Pine Hill, NJ | PEA SIZED HAIL REPORTED. |
| Apr 21, 2:30 PM EDT | HAIL 0.25 | Washington Twp, NJ | FROM PEA TO NEAR DIME SIZE. |
| Apr 21, 2:30 PM EDT | HAIL 0.5 | 2 W Sicklerville, NJ | REPORT FROM MPING. |
| Apr 21, 2:38 PM EDT | TSTM WND GST 54 | 2 Sw Lumberton Twp, NJ | REPORTED AT KVAY. |
| Apr 21, 2:40 PM EDT | TSTM WND GST 43 | 2 Nne Seabrook Farms, NJ | NJ MESONET SITE MEASURES WIND GUST OF 43 MPH. |
| Apr 21, 2:51 PM EDT | TSTM WND DMG | Greentree, NJ | DOWNED WIRES ON NJ70 IN CHERRY HILL. |
| Apr 21, 2:54 PM EDT | TSTM WND GST 55 | Millville Municipal Air, NJ | KMIV MEASURES GUST OF 55 MPH. |
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 21, 1:27 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 5.8 hours before the alert went out and 203 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1922 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 197 m²/s²
- 0-3 km storm-relative helicity
- 207 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
860
WUUS51 KPHI 211749
SVRPHI
DEC001-003-MDC015-NJC001-005-007-011-015-033-PAC029-045-101-211845-
/O.NEW.KPHI.SV.W.0038.200421T1749Z-200421T1845Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
149 PM EDT Tue Apr 21 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
New Castle County in northern Delaware...
North central Kent County in central Delaware...
Southeastern Cecil County in northeastern Maryland...
West central Atlantic County in southern New Jersey...
Cumberland County in southern New Jersey...
Salem County in southern New Jersey...
Camden County in southern New Jersey...
Gloucester County in southern New Jersey...
West central Burlington County in southern New Jersey...
Southeastern Chester County in southeastern Pennsylvania...
Southwestern Philadelphia County in southeastern Pennsylvania...
Delaware County in southeastern Pennsylvania...
* Until 245 PM EDT.
* At 149 PM EDT, a severe thunderstorm was located over Talleyville,
or near Wilmington, moving east at 55 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...
Philadelphia, Camden, Wilmington, Vineland, Newark, Millville,
Bridgeton, Middletown, Elkton, Gloucester City, Cumberland, Cherry
Hill, Evesham, Mount Laurel, Chester, Deptford, Voorhees, West
Deptford, Glassboro and Lindenwold.
People attending Covid-19 Drive through testing should seek safe
shelter immediately!
This includes the following highways...
Atlantic City Expressway between mile markers 33 and 44.
Interstate 295 in New Jersey between mile markers 0 and 41.
Interstate 95 in Pennsylvania between mile markers 0 and 25.
Interstate 95 in Maryland between mile markers 107 and 109.
New Jersey Turnpike between exits 1 and 4.
Interstate 95 in Delaware between mile markers 0 and 23.
Interstate 476 in Pennsylvania between mile markers 0 and 11.
Interstate 676 in New Jersey between mile markers 0 and 4.
Interstate 676 in Pennsylvania between mile markers 0 and 1.
Interstate 76 in New Jersey between mile markers 0 and 3.
Interstate 76 in Pennsylvania between mile markers 341 and 351.
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.
&&
LAT...LON 4003 7553 4001 7530 3998 7527 4000 7522
3997 7483 3917 7496 3943 7600
TIME...MOT...LOC 1749Z 266DEG 49KT 3983 7555
HAIL...0.75IN
WIND...60MPH
$$
Davis2 follow-up statements
085
WWUS51 KPHI 211812
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
212 PM EDT Tue Apr 21 2020
DEC001-003-MDC015-NJC001-005-007-011-015-033-PAC029-045-101-211845-
/O.CON.KPHI.SV.W.0038.000000T0000Z-200421T1845Z/
New Castle DE-Kent DE-Cecil MD-Atlantic NJ-Cumberland NJ-Salem NJ-
Camden NJ-Gloucester NJ-Burlington NJ-Chester PA-Philadelphia PA-
Delaware PA-
212 PM EDT Tue Apr 21 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EDT
FOR NEW CASTLE...NORTH CENTRAL KENT...SOUTHEASTERN CECIL...WEST
CENTRAL ATLANTIC...CUMBERLAND...SALEM...CAMDEN...GLOUCESTER...WEST
CENTRAL BURLINGTON...SOUTH CENTRAL CHESTER...SOUTHWESTERN
PHILADELPHIA AND DELAWARE COUNTIES...
At 210 PM EDT, a severe thunderstorm was located over Glasgow, or
near Newark, moving east at 55 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...
Philadelphia, Camden, Wilmington, Vineland, Newark, Millville,
Bridgeton, Middletown, Elkton, Gloucester City, Cumberland, Cherry
Hill, Evesham, Mount Laurel, Chester, Deptford, Voorhees, West
Deptford, Glassboro and Lindenwold.
People attending Covid-19 Drive through testing should seek safe
shelter immediately!
This includes the following highways...
Atlantic City Expressway between mile markers 33 and 44.
Interstate 295 in New Jersey between mile markers 0 and 41.
Interstate 95 in Pennsylvania between mile markers 0 and 25.
Interstate 95 in Maryland between mile markers 107 and 109.
New Jersey Turnpike between exits 1 and 4.
Interstate 95 in Delaware between mile markers 0 and 23.
Interstate 476 in Pennsylvania between mile markers 0 and 7.
Interstate 676 in New Jersey between mile markers 0 and 4.
Interstate 676 in Pennsylvania between mile markers 0 and 1.
Interstate 76 in New Jersey between mile markers 0 and 3.
Interstate 76 in Pennsylvania between mile markers 341 and 351.
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.
&&
LAT...LON 3989 7564 3994 7548 3998 7527 4000 7522
3997 7483 3917 7496 3943 7600
TIME...MOT...LOC 1810Z 261DEG 46KT 3962 7575
HAIL...0.75IN
WIND...60MPH
$$
Deal494
WWUS51 KPHI 211826
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
226 PM EDT Tue Apr 21 2020
DEC001-MDC015-NJC001-PAC029-211836-
/O.CAN.KPHI.SV.W.0038.000000T0000Z-200421T1845Z/
Kent DE-Cecil MD-Atlantic NJ-Chester PA-
226 PM EDT Tue Apr 21 2020
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL KENT...
SOUTHEASTERN CECIL...WEST CENTRAL ATLANTIC AND SOUTH CENTRAL CHESTER
COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 500 PM EDT for
central and northern Delaware...southern New Jersey...and
southeastern Pennsylvania.
LAT...LON 3964 7560 3970 7552 3973 7553 3971 7548
3977 7546 3984 7536 3988 7515 3996 7513
3999 7506 3997 7483 3925 7518 3929 7543
3933 7546 3933 7550 3935 7549 3946 7559
3957 7557 3960 7561
TIME...MOT...LOC 1826Z 266DEG 49KT 3963 7547
$$
DEC003-NJC005-007-011-015-033-PAC045-101-211845-
/O.CON.KPHI.SV.W.0038.000000T0000Z-200421T1845Z/
New Castle DE-Cumberland NJ-Salem NJ-Camden NJ-Gloucester NJ-
Burlington NJ-Philadelphia PA-Delaware PA-
226 PM EDT Tue Apr 21 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EDT
FOR EASTERN NEW CASTLE...WESTERN CUMBERLAND...SALEM...CAMDEN...
GLOUCESTER...WEST CENTRAL BURLINGTON...SOUTH CENTRAL PHILADELPHIA AND
SOUTHEASTERN DELAWARE COUNTIES...
At 226 PM EDT, a severe thunderstorm was located over Pennsville, or
7 miles southeast of Wilmington, moving east at 55 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Philadelphia, Camden, Wilmington, Vineland, Millville, Bridgeton,
Gloucester City, Cherry Hill, Evesham, Mount Laurel, Chester,
Deptford, Voorhees, West Deptford, Glassboro, Lindenwold, Pennsville,
Bellmawr, Woodbury and Pitman.
This includes the following highways...
Atlantic City Expressway between mile markers 38 and 44.
Interstate 295 in New Jersey between mile markers 0 and 41.
New Jersey Turnpike between exits 1 and 4.
Interstate 676 in New Jersey between mile markers 0 and 4.
Interstate 76 in New Jersey between mile markers 0 and 3.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3964 7560 3970 7552 3973 7553 3971 7548
3977 7546 3984 7536 3988 7515 3996 7513
3999 7506 3997 7483 3925 7518 3929 7543
3933 7546 3933 7550 3935 7549 3946 7559
3957 7557 3960 7561
TIME...MOT...LOC 1826Z 266DEG 49KT 3963 7547
HAIL...0.75IN
WIND...60MPH
$$
DealThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 3:34 AM EDT | Freeze Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 28 hr |
| Apr 21, 11:44 AM EDT | Coastal Flood Statement | PHI | Ocean | 5 hr |
| Apr 21, 12:23 PM EDT | Special Weather Statement | PHI | Monmouth | 37 min |
| Apr 21, 1:04 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 26 min |
| Apr 21, 1:28 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Hunterdon, Mercer, Middlesex, Morris and 1 more | 32 min |
| Apr 21, 1:38 PM EDT | Special Weather Statement | PHI | Cumberland, Salem | 52 min |
| Apr 21, 1:59 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Hunterdon, Mercer, Middlesex, Monmouth and 3 more | 61 min |
| Apr 21, 2:04 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland | 56 min |
| Apr 21, 2:17 PM EDT | Special Marine Warning | PHI | 58 min | |
| Apr 21, 2:24 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more | 66 min |
| Apr 21, 2:55 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 35 min |
| Apr 21, 3:04 PM EDT | Special Marine Warning | PHI | 116 min | |
| Apr 21, 2:46 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 74 min |
| Apr 21, 12:48 PM EDT | Special Weather Statement | PHI | Bucks, Chester, Montgomery | 42 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2020Severe Thunderstorm Warnings in Pennsylvania, 2020Severe Thunderstorm Warnings in Delaware, 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.