Alert archive / New Jersey / Tornado Warnings in 2021
Tornado Warning 22, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this tornado warning at Jul 29, 2021, 5:51 PM EDT for Hunterdon County, Mercer County, New Jersey; Bucks County, Pennsylvania. It was in force for 24 min. 9 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 29, 2021, 5:51 PM EDT (21:51 UTC)
- Expired
- Jul 29, 2021, 6:15 PM EDT
- In force
- 24 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Observed
- Damage threat
- Considerable
- Hail
- 1.0 in
Counties Hunterdon County, NJ, Mercer County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 63 km from the middle of the area, began a volume at 21:56 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 29, 5:57 PM EDT | TSTM WND DMG | New Hope, PA | NUMEROUS REPORTS OF TREES AND LINES DOWN IN NEW HOPE. POSSIBLE TORNADO. TIME ESTIMATED FROM RADAR. |
| Jul 29, 5:59 PM EDT | TORNADO | 1 S New Hope, PA | THE SUPERCELL STORM WHICH PRODUCED A TORNADO IN PLUMSTEAD TWP CYCLED AND PRODUCED ANOTHER TORNADO BEGINNING IN NEW HOPE IN BUCKS COUNTY, PENNSYLVANIA. TREE DAMAGE BEGAN NEAR RIVER RD JUST WEST OF THE DELAWARE RIVER, WITH A PORTION OF RIVER RD CLOSED AND IMPASS |
| Jul 29, 6:10 PM EDT | TSTM WND DMG | 1 Nw Washington Crossin, NJ | MULTIPLE TREES DOWN IN TITUSVILLE, NJ. POSSIBLE TORNADO. TIME ESTIMATED FROM RADAR. |
| Jul 29, 6:10 PM EDT | TSTM WND DMG | Washington Crossing, PA | DEBRIS BLOCKING PA ROUTE 32. |
| Jul 29, 6:10 PM EDT | TSTM WND DMG | Washington Crossing, NJ | TREES DOWN ON NJ ROUTE 29 WITH THE HIGHWAY CLOSED. |
| Jul 29, 6:10 PM EDT | HAIL 0.75 | 3 Nw Pennington, NJ | PUBLIC REPORTS MARBLE SIZE HAIL. TIME ESTIMATED FROM RADAR. |
| Jul 29, 6:11 PM EDT | TSTM WND DMG | 3 Nnw Washington Crossi, NJ | TREES AND WIRES DOWN ON PLEASANT VALLEY ROAD IN HOPEWELL. |
| Jul 29, 6:19 PM EDT | TSTM WND DMG | 1 S Pennington, NJ | MULTIPLE TREES SNAPPED AND UPROOTED NEAR PENNINGTON, NJ. POSSIBLE TORNADO. TIME ESTIMATED FROM RADAR. |
| Jul 29, 6:21 PM EDT | TSTM WND GST 46 | Trenton Mercer Airport, 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 29, 2:23 PM EDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.9 hours before the alert went out and 189 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
- 54 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 823 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
687
WFUS51 KPHI 292151
TORPHI
NJC019-021-PAC017-292215-
/O.NEW.KPHI.TO.W.0022.210729T2151Z-210729T2215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
551 PM EDT Thu Jul 29 2021
The National Weather Service in Mount Holly NJ has issued a
* Tornado Warning for...
South central Hunterdon County in northwestern New Jersey...
Northwestern Mercer County in central New Jersey...
East central Bucks County in southeastern Pennsylvania...
* Until 615 PM EDT.
* At 550 PM EDT, a confirmed dangerous tornado was located near
Lumberville, or 16 miles northwest of Trenton, moving southeast at
25 mph.
This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!
HAZARD...Damaging tornado.
SOURCE...Radar confirmed tornado.
IMPACT...You are in a life-threatening situation. Flying debris
may be deadly to those caught without shelter. Mobile
homes will be destroyed. Considerable damage to homes,
businesses, and vehicles is likely and complete
destruction is possible.
* Locations impacted include...
Trenton, Ewing, Doylestown, Byram, Pennington, New Hope, Yardley,
Newtown, Stockton, Washington Crossing, Gardenville, Lawrenceville,
Lumberville, Woodside, Richboro, Levittown, Lambertville,
Woodbourne, Newtown Grant and Fairless Hills.
This includes Interstate 295 in New Jersey between mile markers 70
and 76.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a large, extremely dangerous and potentially deadly
tornado is occurring. To protect your life, TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4031 7515 4044 7507 4034 7471 4016 7482
TIME...MOT...LOC 2150Z 298DEG 23KT 4036 7503
TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...1.00IN
$$
Fitzsimmons1 follow-up statement
066
WWUS51 KPHI 292202
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
602 PM EDT Thu Jul 29 2021
NJC019-021-PAC017-292215-
/O.CON.KPHI.TO.W.0022.000000T0000Z-210729T2215Z/
Hunterdon NJ-Mercer NJ-Bucks PA-
602 PM EDT Thu Jul 29 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR SOUTHERN
HUNTERDON...NORTHWESTERN MERCER AND EAST CENTRAL BUCKS COUNTIES...
At 601 PM EDT, a confirmed large and dangerous tornado was located
over New Hope, or 11 miles northwest of Trenton, moving southeast at
25 mph.
This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!
HAZARD...Damaging tornado.
SOURCE...Radar confirmed tornado.
IMPACT...You are in a life-threatening situation. Flying debris may
be deadly to those caught without shelter. Mobile homes
will be destroyed. Considerable damage to homes,
businesses, and vehicles is likely and complete destruction
is possible.
Locations impacted include...
Trenton, Ewing, Pennington, New Hope, Yardley, Washington Crossing,
Lawrenceville, Woodside, Levittown, Lambertville, Newtown Grant,
Woodbourne and Fairless Hills.
This includes Interstate 295 in New Jersey between mile markers 70
and 76.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a large, extremely dangerous and potentially deadly
tornado is occurring. To protect your life, TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4031 7505 4039 7499 4036 7480 4034 7471
4017 7481
TIME...MOT...LOC 2201Z 298DEG 23KT 4032 7494
TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...1.00IN
$$
FitzsimmonsThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 3:33 AM EDT | Small Craft Advisory | PHI | 20 hr | |
| Jul 29, 1:33 PM EDT | Special Marine Warning | PHI | 42 min | |
| Jul 29, 2:53 PM EDT | Special Marine Warning | PHI | 100 min | |
| Jul 29, 4:26 PM EDT | Special Weather Statement | PHI | Morris | 34 min |
| Jul 29, 4:30 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 45 min |
| Jul 29, 4:57 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Sussex, Warren | 3 hr |
| Jul 29, 5:01 PM EDT | Special Weather Statement | PHI | Morris | 29 min |
| Jul 29, 5:03 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 42 min |
| Jul 29, 5:08 PM EDT | Tornado Warning | PHI | Hunterdon | 37 min |
| Jul 29, 5:27 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Morris, Somerset | 3 hr |
| Jul 29, 5:32 PM EDT | Flash Flood Warning | PHI | Warren | 2 hr |
| Jul 29, 5:32 PM EDT | Tornado Warning | PHI | Hunterdon | 28 min |
| Jul 29, 5:58 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer, Somerset | 3 hr |
| Jul 29, 6:06 PM EDT | Tornado Warning | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth | 39 min |
| Jul 29, 6:44 PM EDT | Tornado Warning | PHI | Mercer, Monmouth, Ocean | 46 min |
| Jul 29, 6:45 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer | 45 min |
| Jul 29, 6:56 PM EDT | Flash Flood Warning | PHI | Mercer, Middlesex, Monmouth, Ocean, Somerset | 4 hr |
| Jul 29, 7:07 PM EDT | Tornado Warning | PHI | Burlington | 23 min |
| Jul 29, 7:12 PM EDT | Flash Flood Warning | PHI | Burlington | 4 hr |
| Jul 29, 7:18 PM EDT | Tornado Warning | PHI | Mercer, Middlesex, Monmouth, Ocean | 27 min |
| Jul 29, 7:25 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 50 min |
| Jul 29, 7:28 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 47 min |
| Jul 29, 7:52 PM EDT | Special Marine Warning | PHI | 113 min | |
| Jul 29, 3:48 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Northampton | 42 min |
| Jul 29, 4:03 PM EDT | Tornado Warning | PHI | Berks, Lehigh, Northampton | 27 min |
| Jul 29, 4:27 PM EDT | Tornado Warning | PHI | Lehigh, Northampton | 16 min |
| Jul 29, 4:46 PM EDT | Areal Flood Advisory | PHI | Berks, Lehigh, Northampton | 3 hr |
| Jul 29, 4:56 PM EDT | Tornado Warning | PHI | Bucks, Lehigh, Northampton | 34 min |
| Jul 29, 6:21 PM EDT | Special Weather Statement | PHI | Bucks | 24 min |
Nearby
Tornado Warnings in New Jersey, 2021Tornado Warnings in Pennsylvania, 2021Every tornado warning in 2021Tornadoes in 2021
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.