Alert archive / New Jersey / Special Weather Statements in 2019
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Aug 7, 2019, 4:03 PM EDT for Mercer County, New Jersey; Philadelphia County, Pennsylvania. It was in force for 42 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
- Aug 7, 2019, 4:03 PM EDT (20:03 UTC)
- Expired
- Aug 7, 2019, 4:45 PM EDT
- In force
- 42 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Mercer County, NJ, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 48 km from the middle of the area, began a volume at 20:04 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 |
|---|---|---|---|
| Aug 7, 4:16 PM EDT | TSTM WND DMG | 1 Ese Roxborough, PA | DOWNED TREE ON KELLY DRIVE. TIME ESTIMATED FROM RADAR. |
| Aug 7, 4:17 PM EDT | TSTM WND DMG | 1 Ene Roxborough, PA | DOWNED TREES ON WEST RIVER DRIVE AND LINCOLN DRIVE. TIME ESTIMATED FROM RADAR. |
| Aug 7, 4:23 PM EDT | TSTM WND DMG | Princeton, NJ | REPORT OF DOWNED POWER LINES IN PRINCETON. TIME ESTIMATED FROM RADAR. |
| Aug 7, 4:24 PM EDT | TSTM WND DMG | Cheltenham, PA | SOCIAL MEDIA VIDEO OF LARGE TREE BLOWN DOWN DAMAGING PROPERTY AT A RESIDENCE. TIME ESTIMATED FROM RADAR. |
| Aug 7, 4:30 PM EDT | TSTM WND DMG | 2 Ne Lawrenceville, NJ | DOWNED POWER LINES AT LAWRENCEVILLE ROAD AND PROVINCE LINE ROAD. TIME ESTIMATED FROM RADAR. |
| Aug 7, 4:38 PM EDT | TSTM WND DMG | Abington, PA | SEVERAL TREES AND POWER LINES DOWN IN THE AREA. TIME ESTIMATED FROM RADAR. |
| Aug 7, 4:45 PM EDT | TSTM WND DMG | 2 Wsw Princeton, NJ | DOWNED TREE ON US-206 NORTHBOUND AT CR-533. ALSO SOME FLOODING ON THE ROADWAY. ALL LANES CLOSED AND DETOURED. TIME ESTIMATED FROM RADAR. |
| Aug 7, 4:49 PM EDT | TSTM WND DMG | Oreland, PA | DOWNED POWER LINES NEAR THE ORELAND STATION. TIME ESTIMATED FROM RADAR. |
| Aug 7, 4:52 PM EDT | TSTM WND DMG | 1 Se Wynnewood, PA | DOWNED TREE BLOCKING VIOLET LANE NEAR PERIWINKLE ROAD. 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, 8.1 hours before the alert went out and 182 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
- 1372 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 652 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.0
The text
As transmitted.
211 WWUS81 KPHI 072003 SPSPHI Special Weather Statement National Weather Service Mount Holly NJ 403 PM EDT Wed Aug 7 2019 NJZ010-012-015-PAZ070-071-104-106-072045- Somerset-Middlesex-Mercer-Lower Bucks-Eastern Montgomery-Delaware-Philadelphia- 403 PM EDT Wed Aug 7 2019 ...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL MERCER...SOUTH CENTRAL SOMERSET...WEST CENTRAL MIDDLESEX...SOUTHEASTERN MONTGOMERY...SOUTHEASTERN BUCKS...PHILADELPHIA AND NORTHEASTERN DELAWARE COUNTIES... At 403 PM EDT, radar indicated strong thunderstorms were located along a line extending from Princeton to Roxborough. Movement was east at 5 mph. Wind gusts up to 40 mph and pea size hail are possible with these storms. Locations impacted include... Philadelphia, Trenton, Camden, Bensalem, South Brunswick, Ewing, Princeton, Palmyra, Hatboro, Jenkintown, Narberth, Pennington, Rockledge, Yardley, Newtown, Hopewell, Abington, Langhorne, Bryn Athyn and Ivyland. This includes Interstate 295 in New Jersey between mile markers 65 and 76. If outdoors, consider seeking shelter inside a building. Torrential rainfall is also occurring with these storms, and may cause localized flooding. Do not drive your vehicle through flooded roadways. A severe thunderstorm watch remains in effect until 900 PM EDT for southern, central, northern and northwestern New Jersey...and southeastern Pennsylvania. LAT...LON 4040 7445 3993 7516 3999 7542 4043 7474 TIME...MOT...LOC 2003Z 266DEG 5KT 4036 7467 4001 7523 $$ Staarmann
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 8:05 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Warren | 55 min |
| Aug 7, 10:02 AM EDT | Flash Flood Watch | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 5 more | 11 hr |
| Aug 7, 12:55 PM EDT | Special Weather Statement | PHI | Hunterdon | 35 min |
| Aug 7, 1:02 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Somerset, Warren | 4 hr |
| Aug 7, 1:12 PM EDT | Special Weather Statement | PHI | Monmouth | 33 min |
| Aug 7, 1:22 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Warren | 38 min |
| Aug 7, 1:26 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer | 49 min |
| Aug 7, 1:33 PM EDT | Special Marine Warning | PHI | 42 min | |
| Aug 7, 1:38 PM EDT | Severe Thunderstorm Warning | PHI | Cape May | 52 min |
| Aug 7, 1:40 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Somerset | 50 min |
| Aug 7, 1:44 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 46 min |
| Aug 7, 1:46 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris | 4 hr |
| Aug 7, 1:50 PM EDT | Special Marine Warning | PHI | 55 min | |
| Aug 7, 1:52 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset | 55 min |
| Aug 7, 2:01 PM EDT | Areal Flood Advisory | PHI | Burlington, Mercer, Middlesex, Somerset | 97 min |
| Aug 7, 2:03 PM EDT | Special Marine Warning | PHI | 34 min | |
| Aug 7, 2:07 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth | 38 min |
| Aug 7, 2:16 PM EDT | Special Weather Statement | PHI | Cape May | 29 min |
| Aug 7, 2:18 PM EDT | Areal Flood Advisory | PHI | Morris, Somerset | 3 hr |
| Aug 7, 2:21 PM EDT | Special Marine Warning | PHI | 23 min | |
| Aug 7, 2:23 PM EDT | Severe Thunderstorm Warning | PHI | Cape May | 19 min |
| Aug 7, 2:27 PM EDT | Severe Thunderstorm Warning | PHI | Sussex, Warren | 32 min |
| Aug 7, 2:30 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 45 min |
| Aug 7, 2:57 PM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth, Somerset | 3 hr |
| Aug 7, 3:05 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden | 40 min |
| Aug 7, 3:07 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 53 min |
| Aug 7, 3:18 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon | 42 min |
| Aug 7, 3:24 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 51 min |
| Aug 7, 3:38 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Ocean | 67 min |
| Aug 7, 3:42 PM EDT | Special Weather Statement | PHI | Middlesex | 33 min |
| Aug 7, 3:49 PM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth | 3 hr |
| Aug 7, 3:54 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Warren | 51 min |
| Aug 7, 3:59 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 46 min |
| Aug 7, 4:03 PM EDT | Flash Flood Warning | PHI | Middlesex, Monmouth | 4 hr |
| Aug 7, 4:06 PM EDT | Areal Flood Advisory | PHI | Mercer, Middlesex, Somerset | 4 hr |
| Aug 7, 4:09 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Mercer, Middlesex, Somerset | 66 min |
| Aug 7, 4:14 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 46 min |
| Aug 7, 4:20 PM EDT | Flash Flood Warning | PHI | Mercer | 4 hr |
| Aug 7, 4:27 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 63 min |
| Aug 7, 4:34 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth | 41 min |
| Aug 7, 4:39 PM EDT | Flash Flood Warning | PHI | Mercer, Middlesex, Somerset | 6 hr |
| Aug 7, 5:02 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth, Morris, Somerset | 22 min |
| Aug 7, 5:03 PM EDT | Special Marine Warning | PHI | 42 min | |
| Aug 7, 5:16 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Mercer, Salem | 59 min |
| Aug 7, 5:34 PM EDT | Special Marine Warning | PHI | 56 min | |
| Aug 7, 5:39 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Cumberland, Gloucester, Salem | 51 min |
| Aug 7, 5:41 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 49 min |
| Aug 7, 5:57 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 1 more | 78 min |
| Aug 7, 6:01 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Cumberland, Gloucester, Mercer, Middlesex and 3 more | 3 hr |
| Aug 7, 6:21 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more | 69 min |
| Aug 7, 6:27 PM EDT | Special Marine Warning | PHI | 63 min | |
| Aug 7, 6:56 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Aug 7, 7:09 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Aug 7, 7:15 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester, Monmouth, Ocean | 75 min |
| Aug 7, 7:42 PM EDT | Areal Flood Warning | PHI | Mercer | 3 hr |
| Aug 7, 1:46 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 44 min |
| Aug 7, 2:59 PM EDT | Special Weather Statement | PHI | Bucks, Montgomery | 31 min |
| Aug 7, 3:01 PM EDT | Areal Flood Advisory | PHI | Berks | 2 hr |
| Aug 7, 3:02 PM EDT | Special Weather Statement | PHI | Berks, Lehigh | 43 min |
| Aug 7, 3:24 PM EDT | Flash Flood Warning | PHI | Berks | 106 min |
| Aug 7, 3:30 PM EDT | Special Weather Statement | PHI | Delaware, Montgomery | 30 min |
| Aug 7, 3:31 PM EDT | Special Weather Statement | PHI | Philadelphia | 44 min |
| Aug 7, 3:41 PM EDT | Areal Flood Advisory | PHI | Berks, Lehigh, Northampton | 91 min |
| Aug 7, 4:44 PM EDT | Flash Flood Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 3 hr |
| Aug 7, 6:10 PM EDT | River Flood Warning | PHI | Delaware | 119 min |
| Aug 7, 1:46 PM EDT | Special Weather Statement | PHI | Sussex | 29 min |
| Aug 7, 1:49 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 41 min |
| Aug 7, 4:44 PM EDT | Special Weather Statement | PHI | New Castle | 31 min |
| Aug 7, 4:57 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 63 min |
| Aug 7, 5:33 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 42 min |
| Aug 7, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 52 min |
| Aug 7, 6:39 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 51 min |
| Aug 7, 7:23 PM EDT | Special Weather Statement | PHI | Sussex | 37 min |
| Aug 7, 7:54 PM EDT | Special Weather Statement | PHI | Sussex | 36 min |
| Aug 6, 10:29 PM EDT | Special Weather Statement | PHI | Talbot | 46 min |
| Aug 7, 4:07 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 53 min |
Nearby
Special Weather Statements in New Jersey, 2019Special Weather Statements in Pennsylvania, 2019Every special weather statement 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.