Alert archive / Pennsylvania / Special Weather Statements in 2021
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Jul 16, 2021, 7:42 PM EDT for Berks County, Pennsylvania. It was in force for 33 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
- Jul 16, 2021, 7:42 PM EDT (23:42 UTC)
- Expired
- Jul 16, 2021, 8:15 PM EDT
- In force
- 33 min
- Issued by
- NWS Philadelphia/Mount Holly
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 118 km from the middle of the area, began a volume at 23:45 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, 11.7 hours before the alert went out and 220 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
- 4 J/kg
- Mixed-layer CIN
- -127 J/kg
- Mixed-layer LCL
- 1491 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
851
WWUS81 KPHI 162342
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
742 PM EDT Fri Jul 16 2021
PAZ060-103-170015-
Western Montgomery-Berks-
742 PM EDT Fri Jul 16 2021
...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL BERKS AND
NORTHWESTERN MONTGOMERY COUNTIES...
At 742 PM EDT, a strong thunderstorm was located near Birdsboro, or 8
miles east of Reading, moving east at 10 mph.
Wind gusts up to 40 mph and pea size hail are possible with this
storm.
Locations impacted include...
Bally, Bechtelsville, Gilbertsville, Boyertown and Halfway House.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
LAT...LON 4051 7562 4049 7559 4031 7549 4027 7581
4034 7585
TIME...MOT...LOC 2342Z 247DEG 10KT 4033 7577
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 2:55 PM EDT | Areal Flood Advisory | PHI | Sussex | 4 hr |
| Jul 16, 3:17 PM EDT | Flash Flood Watch | PHI | Atlantic, Burlington, Camden, Gloucester, Hunterdon, Mercer and 8 more | 35 hr |
| Jul 16, 5:01 PM EDT | Areal Flood Advisory | PHI | Sussex | 2 hr |
| Jul 16, 5:21 PM EDT | Flash Flood Warning | PHI | Sussex | 2 hr |
| Jul 16, 5:25 PM EDT | Special Weather Statement | PHI | Sussex | 35 min |
| Jul 16, 5:29 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 46 min |
| Jul 16, 5:34 PM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 112 min |
| Jul 16, 6:10 PM EDT | Special Weather Statement | PHI | Warren | 35 min |
| Jul 16, 6:14 PM EDT | Special Weather Statement | PHI | Sussex | 31 min |
| Jul 16, 6:27 PM EDT | Areal Flood Advisory | PHI | Sussex | 59 min |
| Jul 16, 6:46 PM EDT | Special Weather Statement | PHI | Warren | 29 min |
| Jul 16, 7:10 PM EDT | Special Weather Statement | PHI | Warren | 35 min |
| Jul 16, 5:07 PM EDT | Special Weather Statement | PHI | Carbon | 23 min |
| Jul 16, 5:21 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 39 min |
| Jul 16, 5:38 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 20 min |
Nearby
Special 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.