Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 9, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Feb 7, 2020, 10:43 AM EST for 6 counties in New Jersey. It was in force for 47 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
- Feb 7, 2020, 10:43 AM EST (15:43 UTC)
- Expired
- Feb 7, 2020, 11:30 AM EST
- In force
- 47 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hunterdon County, NJ, Middlesex County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ
The radar
The Philadelphia radar (KDIX), 99 km from the middle of the area, began a volume at 15:44 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 |
|---|---|---|---|
| Feb 7, 10:44 AM EST | TSTM WND DMG | 2 W Mcpherson, NJ | DOWNED TREE ON NJ-31 NORTHBOUND NORTH OF CR 623. TIME ESTIMATED FROM RADAR. |
| Feb 7, 10:57 AM EST | TSTM WND DMG | 3 S Bedminster Twp, NJ | DOWNED TREE ON I-78 EASTBOUND EAST OF EXIT 29. TIME ESTIMATED FROM RADAR. |
| Feb 7, 11:01 AM EST | TSTM WND DMG | 2 Nw Watchung, NJ | MPING REPORT OF 3 INCH TREE LIMBS OR POWER POLES SNAPPED. |
| Feb 7, 11:02 AM EST | TSTM WND DMG | 1 Wnw Manville, NJ | DOWNED TREE AND WIRES NEAR THE INTERSECTION OF DUKES PARKWAY AND DICKERSON ROAD. TIME ESTIMATED FROM RADAR. |
| Feb 7, 11:06 AM EST | TSTM WND DMG | 1 Sw Middlesex, NJ | DOWNED TREE ON STATE HIGHWAY 28 WESTBOUND WEST OF MOUNTAIN AVENUE. LANE RESTRICTIONS IN PLACE. TIME ESTIMATED FROM RADAR. |
| Feb 7, 11:06 AM EST | TSTM WND DMG | 2 Nw Watchung, NJ | DOWNED TREES AND POWER POLES. MPING REPORT. 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
Brookhaven, NY (KOKX), launched 12:00Z, 3.7 hours before the alert went out and 138 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
- 469 m above ground
- 0-6 km bulk shear
- 105 kt
- 0-1 km storm-relative helicity
- 650 m²/s²
- 0-3 km storm-relative helicity
- 811 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
063
WUUS51 KPHI 071543
SVRPHI
NJC019-023-027-035-037-041-071630-
/O.NEW.KPHI.SV.W.0009.200207T1543Z-200207T1630Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1043 AM EST Fri Feb 7 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Hunterdon County in northwestern New Jersey...
Morris County in northern New Jersey...
Central Sussex County in northwestern New Jersey...
Southeastern Warren County in northwestern New Jersey...
Somerset County in northern New Jersey...
North central Middlesex County in northern New Jersey...
* Until 1130 AM EST.
* At 1043 AM EST, severe thunderstorms were located along a line
extending from near Washington to Sand Brook, moving northeast at
55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Morristown, Somerville, Newton, Bridgewater, Dover, Madison,
Hopatcong, Middlesex, Florham Park, East Hanover, Lincoln Park,
Bound Brook, Manville, Kinnelon, Hackettstown, Chatham, Boonton,
Butler, Wharton and Washington.
This includes the following highways...
Interstate 287 in New Jersey between mile markers 11 and 54.
Interstate 78 in New Jersey between mile markers 13 and 42.
Interstate 80 in New Jersey between mile markers 17 and 47.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.
&&
LAT...LON 4120 7437 4110 7449 4104 7450 4105 7445
4102 7443 4100 7430 4090 7427 4091 7433
4076 7438 4075 7436 4067 7446 4066 7445
4066 7440 4060 7446 4059 7443 4039 7482
4046 7489 4045 7496 4080 7501 4128 7452
TIME...MOT...LOC 1543Z 234DEG 48KT 4078 7492 4049 7492
HAIL...<.75IN
WIND...60MPH
$$
Staarmann1 follow-up statement
649
WWUS51 KPHI 071619
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1119 AM EST Fri Feb 7 2020
NJC019-023-035-041-071629-
/O.CAN.KPHI.SV.W.0009.000000T0000Z-200207T1630Z/
Hunterdon NJ-Warren NJ-Somerset NJ-Middlesex NJ-
1119 AM EST Fri Feb 7 2020
...THE SEVERE THUNDERSTORM WARNING FOR HUNTERDON...SOUTHEASTERN
WARREN...SOMERSET AND NORTH CENTRAL MIDDLESEX COUNTIES IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4068 7445 4066 7449 4106 7472 4111 7469
4128 7452 4120 7437 4110 7449 4104 7450
4105 7445 4102 7443 4100 7430 4090 7427
4091 7433 4076 7438 4075 7436
TIME...MOT...LOC 1619Z 230DEG 49KT 4110 7450 4081 7437
$$
NJC027-037-071630-
/O.CON.KPHI.SV.W.0009.000000T0000Z-200207T1630Z/
Morris NJ-Sussex NJ-
1119 AM EST Fri Feb 7 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 AM EST
FOR MORRIS AND EASTERN SUSSEX COUNTIES...
At 1119 AM EST, severe thunderstorms were located along a line
extending from near Franklin to East Hanover, moving northeast at 55
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Morristown, Dover, Madison, Hopatcong, Florham Park, East Hanover,
Lincoln Park, Kinnelon, Chatham, Boonton, Butler, Wharton, Rockaway,
Morris Plains, Mount Arlington, Franklin, Mountain Lakes, Riverdale,
Hamburg and Ogdensburg.
This includes the following highways...
Interstate 287 in New Jersey between mile markers 31 and 54.
Interstate 80 in New Jersey between mile markers 31 and 47.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4068 7445 4066 7449 4106 7472 4111 7469
4128 7452 4120 7437 4110 7449 4104 7450
4105 7445 4102 7443 4100 7430 4090 7427
4091 7433 4076 7438 4075 7436
TIME...MOT...LOC 1619Z 230DEG 49KT 4110 7450 4081 7437
HAIL...<.75IN
WIND...60MPH
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 6, 8:13 PM EST | Storm Warning | PHI | 21 hr | |
| Feb 6, 8:24 PM EST | High Wind Warning | PHI | Atlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean | 21 hr |
| Feb 7, 8:03 AM EST | Coastal Flood Advisory | PHI | Burlington, Camden, Gloucester, Mercer, Salem | 11 hr |
| Feb 7, 8:18 AM EST | Coastal Flood Statement | PHI | Ocean | 11 hr |
| Feb 7, 9:36 AM EST | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 39 min |
| Feb 7, 9:39 AM EST | Tornado Warning | PHI | Gloucester, Salem | 36 min |
| Feb 7, 9:43 AM EST | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 62 min |
| Feb 7, 10:10 AM EST | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more | 65 min |
| Feb 7, 10:14 AM EST | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 3 more | 61 min |
| Feb 7, 11:01 AM EST | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth, Ocean | 44 min |
| Feb 7, 3:27 PM EST | Gale Warning | PHI | 9 hr | |
| Feb 7, 6:53 PM EST | Low Water Advisory | PHI | 9 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 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.