Alert archive / Pennsylvania / Special Weather Statements in 2017
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Aug 3, 2017, 8:54 PM EDT for Berks County, Pennsylvania. It was in force for 51 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, 2017, 8:54 PM EDT (00:54 UTC)
- Expired
- Aug 3, 2017, 9:45 PM EDT
- In force
- 51 min
- Issued by
- NWS Philadelphia/Mount Holly
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 130 km from the middle of the area, began a volume at 00:58 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 00:00Z, 0.9 hours before the alert went out and 216 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
- 759 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 1379 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
987 WWUS81 KPHI 040054 SPSPHI Special Weather Statement National Weather Service Mount Holly NJ 854 PM EDT THU AUG 3 2017 PAZ060-061-103-040145- Lehigh-Western Montgomery-Berks- 854 PM EDT THU AUG 3 2017 ...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN BERKS... NORTHWESTERN MONTGOMERY AND CENTRAL LEHIGH COUNTIES... At 853 PM EDT, a strong thunderstorm was located over Fleetwood, or 11 miles northeast of Reading, moving northeast at 15 mph. Winds up to 50 mph and half inch hail are possible with this storm. A 44 mph wind gust occurred in Reading as this storm passed through. Locations impacted include... Reading, Kutztown, Fleetwood, Laureldale, Topton, Leesport, Shoemakersville, Bally, Lyons, Lenhartsville, New Tripoli, Zionsville, Ancient Oaks, Claussville, Fairview Hgts, Mount Penn, Macungie, Alburtis, St. Lawrence and Centerport. Torrential rainfall is also occurring with this storm, and may cause localized flooding. Do not drive your vehicle through flooded roadways. LAT...LON 4029 7585 4047 7605 4071 7575 4045 7546 TIME...MOT...LOC 0053Z 231DEG 14KT 4046 7578 $$ CMS
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 8:02 PM EDT | Special Weather Statement | PHI | Warren | 43 min |
| Aug 3, 9:11 PM EDT | Areal Flood Warning | PHI | Burlington | 4 hr |
| Aug 3, 9:20 PM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 3 hr |
| Aug 4, 3:41 PM EDT | Small Craft Advisory | PHI | 9 hr | |
| Aug 3, 8:01 PM EDT | Special Weather Statement | PHI | Berks | 44 min |
| Aug 3, 8:11 PM EDT | Special Weather Statement | PHI | Lehigh | 49 min |
| Aug 3, 8:29 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Northampton | 46 min |
| Aug 3, 8:35 PM EDT | Areal Flood Advisory | PHI | Berks, Lehigh, Northampton | 4 hr |
| Aug 3, 9:29 PM EDT | Special Weather Statement | PHI | Lehigh, Northampton | 46 min |
| Aug 4, 1:25 PM EDT | Special Weather Statement | PHI | Berks | 65 min |
| Aug 4, 2:49 PM EDT | Areal Flood Advisory | PHI | Berks | 116 min |
Nearby
Special Weather Statements in Pennsylvania, 2017Every special weather statement in 2017
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.