Alert archive / New Jersey / Special Weather Statements in 2021
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Oct 25, 2021, 8:33 PM EDT for Warren County, New Jersey; Northampton County, Pennsylvania. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 25, 2021, 8:33 PM EDT (00:33 UTC)
- Expired
- Oct 25, 2021, 9:15 PM EDT
- In force
- 42 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.25 in
- Wind
- 40
Counties Warren County, NJ, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 99 km from the middle of the area, began a volume at 00:35 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.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.6 hours before the alert went out and 201 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
- 544 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 758 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.0
The text
As transmitted.
082
WWUS81 KPHI 260033
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
833 PM EDT Mon Oct 25 2021
NJZ007-009-PAZ055-061-062-105-260115-
Hunterdon NJ-Warren NJ-Upper Bucks PA-Lehigh PA-Monroe PA-
Northampton PA-
833 PM EDT Mon Oct 25 2021
...A strong thunderstorm will impact portions of northwestern
Hunterdon, southwestern Warren, southeastern Lehigh, northwestern
Bucks, south central Monroe and Northampton Counties through 915 PM
EDT...
At 833 PM EDT, Doppler radar was tracking a strong thunderstorm near
Quakertown, or 13 miles southeast of Allentown, moving north at 50
mph.
HAZARD...Wind gusts up to 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Allentown, Easton, Bethlehem, Forks, Quakertown, Wilson, Bedminster,
Washington, Hellertown, Nazareth, Bangor, Tinicum, Pen Argyl, Wind
Gap, Bath, Belvidere, Harmony, Oxford, Alpha and Hope.
This includes the following highways...
Northeast Extension between mile markers 42 and 48.
Interstate 78 in Pennsylvania between mile markers 60 and 76.
Interstate 78 in New Jersey between mile markers 0 and 11.
Interstate 80 in New Jersey between mile markers 3 and 14.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4038 7523 4042 7548 4092 7545 4097 7490
4046 7505
TIME...MOT...LOC 0033Z 186DEG 43KT 4046 7529
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
$$
JEOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 25, 8:26 PM EDT | Special Weather Statement | PHI | Mercer | 34 min |
| Oct 25, 9:09 PM EDT | Special Weather Statement | PHI | Middlesex, Morris, Somerset | 51 min |
| Oct 26, 1:22 AM EDT | Areal Flood Warning | PHI | Atlantic, Burlington, Cape May, Cumberland, Ocean | 5 hr |
| Oct 26, 2:08 AM EDT | Flash Flood Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 4 hr |
| Oct 26, 3:08 AM EDT | Flash Flood Warning | PHI | Middlesex, Monmouth, Ocean | 8 hr |
| Oct 26, 4:14 AM EDT | Flash Flood Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 4 hr |
| Oct 26, 5:22 AM EDT | Areal Flood Advisory | PHI | Morris, Sussex, Warren | 2 hr |
| Oct 26, 6:09 AM EDT | Areal Flood Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 3 hr |
| Oct 26, 6:18 AM EDT | Areal Flood Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 13 hr |
| Oct 26, 7:15 AM EDT | Areal Flood Warning | PHI | Monmouth, Ocean | 5 hr |
| Oct 26, 7:32 AM EDT | River Flood Warning | PHI | Somerset | 28 hr |
| Oct 26, 7:38 AM EDT | Areal Flood Warning | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 37 hr |
| Oct 26, 8:07 AM EDT | Areal Flood Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 12 hr |
| Oct 26, 8:18 AM EDT | River Flood Warning | PHI | Morris, Somerset | 8 hr |
| Oct 26, 10:12 AM EDT | River Flood Warning | PHI | Somerset | 11 hr |
| Oct 26, 10:12 AM EDT | River Flood Warning | PHI | Middlesex, Somerset | 24 hr |
| Oct 26, 10:12 AM EDT | River Flood Warning | PHI | Middlesex, Somerset | 33 hr |
| Oct 26, 10:50 AM EDT | Areal Flood Warning | PHI | Middlesex, Monmouth, Ocean | 9 hr |
| Oct 26, 4:24 PM EDT | River Flood Warning | PHI | Morris | 31 hr |
| Oct 26, 4:28 PM EDT | River Flood Warning | PHI | Morris, Passaic | 29 hr |
| Oct 26, 4:39 PM EDT | River Flood Warning | PHI | Essex, Morris, Passaic | 54 hr |
| Oct 26, 4:39 PM EDT | River Flood Warning | PHI | Essex, Passaic | 42 hr |
| Oct 26, 12:31 AM EDT | Areal Flood Warning | PHI | Berks, Chester, Delaware, Montgomery | 5 hr |
| Oct 26, 10:27 AM EDT | Areal Flood Advisory | PHI | Monroe, Northampton | 4 hr |
| Oct 26, 12:20 PM EDT | Areal Flood Warning | PHI | Carbon, Monroe, Northampton | 7 hr |
| Oct 26, 1:53 AM EDT | Areal Flood Advisory | PHI | Sussex | 3 hr |
| Oct 25, 11:51 PM EDT | Areal Flood Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 6 hr |
Nearby
Special Weather Statements in New Jersey, 2021Special Weather Statements in Pennsylvania, 2021Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.