Alert archive / Pennsylvania / Special Weather Statements in 2018
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Aug 3, 2018, 10:07 PM EDT for Warren County, New Jersey; Lehigh County, Northampton County, Pennsylvania. It was in force for 53 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
- Aug 3, 2018, 10:07 PM EDT (02:07 UTC)
- Expired
- Aug 3, 2018, 11:00 PM EDT
- In force
- 53 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Warren County, NJ, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 108 km from the middle of the area, began a volume at 02:11 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, 2.1 hours before the alert went out and 197 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
- 1302 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 561 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
847
WWUS81 KPHI 040207
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
1007 PM EDT FRI AUG 3 2018
NJZ007-PAZ061-062-040300-
Warren-Lehigh-Northampton-
1007 PM EDT FRI AUG 3 2018
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN WARREN...LEHIGH AND
NORTHAMPTON COUNTIES...
At 1005 PM EDT, a strong thunderstorm was located over Bethlehem, or
near Allentown, moving northeast at 40 mph.
Winds up to 45 mph are possible with this storm. Owing to the
saturated ground, these gusts may be strong enough to produce a few
downed trees.
Locations impacted include...
Allentown, Easton, Bethlehem, Forks, Emmaus, Northampton, Wilson,
Washington, Hellertown, Nazareth, Bangor, Pen Argyl, Wind Gap, Bath,
Belvidere, Harmony, Oxford, Alpha, Belfast and Hampton.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 4098 7510 4076 7492 4069 7500 4070 7502
4062 7515 4060 7522 4045 7554 4059 7576
TIME...MOT...LOC 0205Z 235DEG 34KT 4064 7540
$$
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 9:10 PM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 4 hr |
| Aug 3, 10:35 PM EDT | Special Weather Statement | PHI | Morris, Sussex, Warren | 55 min |
| Aug 4, 2:53 AM EDT | Areal Flood Advisory | PHI | Warren | 4 hr |
| Aug 4, 3:09 AM EDT | Special Weather Statement | PHI | Warren | 51 min |
| Aug 4, 3:14 AM EDT | Areal Flood Advisory | PHI | Sussex | 4 hr |
| Aug 4, 3:55 AM EDT | Special Weather Statement | PHI | Sussex | 65 min |
| Aug 4, 3:58 AM EDT | Areal Flood Warning | PHI | Sussex, Warren | 33 hr |
| Aug 4, 5:12 AM EDT | Areal Flood Advisory | PHI | Morris | 3 hr |
| Aug 4, 5:45 AM EDT | Areal Flood Advisory | PHI | Hunterdon | 7 hr |
| Aug 4, 5:56 AM EDT | Areal Flood Advisory | PHI | Morris | 3 hr |
| Aug 4, 6:19 AM EDT | Flash Flood Warning | PHI | Morris | 4 hr |
| Aug 4, 6:55 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Somerset | 4 hr |
| Aug 4, 8:19 AM EDT | Areal Flood Advisory | PHI | Middlesex, Somerset | 4 hr |
| Aug 4, 9:32 AM EDT | Flash Flood Warning | PHI | Somerset | 3 hr |
| Aug 4, 9:39 AM EDT | Small Craft Advisory | PHI | 6 hr | |
| Aug 4, 10:16 AM EDT | Areal Flood Warning | PHI | Morris | 4 hr |
| Aug 4, 10:51 AM EDT | Areal Flood Warning | PHI | Hunterdon, Somerset | 4 hr |
| Aug 4, 12:13 PM EDT | Areal Flood Warning | PHI | Middlesex, Somerset | 2 hr |
| Aug 4, 4:41 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 34 min |
| Aug 4, 5:04 PM EDT | Special Weather Statement | PHI | Hunterdon | 56 min |
| Aug 3, 8:35 PM EDT | Areal Flood Advisory | PHI | Carbon | 4 hr |
| Aug 3, 9:03 PM EDT | Flash Flood Warning | PHI | Berks | 8 hr |
| Aug 3, 10:23 PM EDT | Flash Flood Warning | PHI | Lehigh, Northampton | 4 hr |
| Aug 3, 11:24 PM EDT | Areal Flood Advisory | PHI | Berks, Lehigh | 6 hr |
| Aug 4, 12:24 AM EDT | Areal Flood Advisory | PHI | Carbon | 4 hr |
| Aug 4, 1:08 AM EDT | Areal Flood Advisory | PHI | Monroe | 4 hr |
| Aug 4, 1:15 AM EDT | Special Weather Statement | PHI | Berks | 30 min |
| Aug 4, 1:47 AM EDT | Special Weather Statement | PHI | Berks, Lehigh | 43 min |
| Aug 4, 1:59 AM EDT | Areal Flood Advisory | PHI | Chester | 4 hr |
| Aug 4, 2:22 AM EDT | Areal Flood Warning | PHI | Lehigh, Northampton | 21 hr |
| Aug 4, 2:27 AM EDT | Special Weather Statement | PHI | Lehigh, Northampton | 63 min |
| Aug 4, 4:54 AM EDT | Areal Flood Warning | PHI | Berks | 7 hr |
| Aug 4, 5:09 AM EDT | Areal Flood Advisory | PHI | Monroe | 2 hr |
| Aug 4, 6:45 AM EDT | River Flood Warning | PHI | Chester | 4 hr |
| Aug 4, 8:48 AM EDT | Areal Flood Warning | PHI | Chester, Montgomery | 4 hr |
| Aug 4, 9:20 AM EDT | River Flood Warning | PHI | Montgomery | 3 hr |
| Aug 4, 11:55 AM EDT | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 12 hr |
| Aug 3, 11:25 PM EDT | Special Weather Statement | PHI | Talbot | 50 min |
| Aug 4, 12:01 AM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 29 min |
Nearby
Special Weather Statements in Pennsylvania, 2018Special Weather Statements in New Jersey, 2018Every special weather statement in 2018
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.