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 2, 2018, 1:50 PM EDT for Lehigh County, Pennsylvania. It was in force for 25 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 2, 2018, 1:50 PM EDT (17:50 UTC)
- Expired
- Aug 2, 2018, 2:15 PM EDT
- In force
- 25 min
- Issued by
- NWS Philadelphia/Mount Holly
County Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 114 km from the middle of the area, began a volume at 17:51 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 5.8 hours before the alert went out and 221 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
- 98 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 727 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The text
As transmitted.
950 WWUS81 KPHI 021750 SPSPHI Special Weather Statement National Weather Service Mount Holly NJ 150 PM EDT THU AUG 2 2018 PAZ060>062-103-105-021815- Upper Bucks-Lehigh-Western Montgomery-Northampton-Berks- 150 PM EDT THU AUG 2 2018 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN BERKS... NORTHWESTERN MONTGOMERY...SOUTHEASTERN LEHIGH...NORTHWESTERN BUCKS AND SOUTHERN NORTHAMPTON COUNTIES... At 149 PM EDT, a strong thunderstorm was located near Fleetwood, or 9 miles east of Reading, moving east at 40 mph. Winds up to 50 mph are possible with this storm. Locations impacted include... Allentown, Bethlehem, Emmaus, Quakertown, Perkasie, Hellertown, Birdsboro, Fleetwood, East Greenville, Bally, Bechtelsville, Green Lane, Zionsville, Ancient Oaks, Lehigh University, Geryville, Gilbertsville, Fountain Hill, Sellersville and Boyertown. This storm may intensify, so be certain to monitor local radio and television stations, NOAA Weather Radio or social media, for additional information and possible warnings from the National Weather Service. LAT...LON 4025 7581 4042 7589 4063 7536 4038 7523 TIME...MOT...LOC 1749Z 248DEG 34KT 4037 7576 $$ Kruzdlo
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 10:40 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 37 min |
| Aug 1, 11:35 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 20 min |
| Aug 2, 3:31 AM EDT | Flash Flood Watch | PHI | Morris, Sussex, Warren | 55 hr |
| Aug 2, 1:41 PM EDT | Special Weather Statement | PHI | Burlington | 34 min |
| Aug 2, 2:09 PM EDT | Special Weather Statement | PHI | Monmouth | 36 min |
| Aug 2, 3:41 PM EDT | Special Weather Statement | PHI | Morris | 34 min |
| Aug 2, 6:02 PM EDT | Special Marine Warning | PHI | 58 min | |
| Aug 1, 8:59 PM EDT | Special Weather Statement | PHI | Berks | 61 min |
| Aug 1, 9:54 PM EDT | Special Weather Statement | PHI | Berks, Carbon, Lehigh | 66 min |
| Aug 2, 2:19 PM EDT | Special Weather Statement | PHI | Northampton | 41 min |
| Aug 1, 10:58 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 47 min |
| Aug 2, 5:36 PM EDT | Special Weather Statement | PHI | New Castle | 24 min |
| Aug 2, 5:40 PM EDT | Special Weather Statement | PHI | Kent | 35 min |
| Aug 2, 4:37 PM EDT | Special Weather Statement | PHI | Queen Anne's | 23 min |
| Aug 2, 5:03 PM EDT | Special Weather Statement | PHI | Kent | 27 min |
| Aug 2, 5:34 PM EDT | Special Weather Statement | PHI | Queen Anne's | 26 min |
| Aug 2, 6:07 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 38 min |
Nearby
Special Weather Statements in Pennsylvania, 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.