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 Jun 20, 2021, 10:27 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
- Jun 20, 2021, 10:27 PM EDT (02:27 UTC)
- Expired
- Jun 20, 2021, 11:00 PM EDT
- In force
- 33 min
- Issued by
- NWS Philadelphia/Mount Holly
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 155 km from the middle of the area, began a volume at 02:29 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, 2.5 hours before the alert went out and 212 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
- 662 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1494 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
531
WWUS81 KPHI 210227
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
1027 PM EDT Sun Jun 20 2021
PAZ060-210300-
Berks-
1027 PM EDT Sun Jun 20 2021
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTH CENTRAL BERKS
COUNTY...
At 1027 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Schuylkill Haven to near Bernville.
Movement was northeast at 15 mph.
Wind gusts up to 40 mph are possible with these storms.
Locations impacted include...
Hamburg, Leesport, Shoemakersville and Centerport.
This includes Interstate 78 in Pennsylvania between mile markers 21
and 34.
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 4056 7613 4056 7609 4058 7606 4057 7602
4060 7600 4062 7600 4064 7598 4046 7586
4042 7608 4053 7621
TIME...MOT...LOC 0227Z 246DEG 15KT 4060 7617 4048 7608
$$
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 4:35 AM EDT | Heat Advisory | PHI | Burlington, Camden, Gloucester, Mercer | 15 hr |
| Jun 21, 7:12 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Cumberland, Gloucester, Salem | 48 min |
| Jun 21, 7:24 PM EDT | Special Marine Warning | PHI | 66 min | |
| Jun 21, 7:38 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 52 min |
| Jun 21, 7:43 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 47 min |
| Jun 21, 7:55 PM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Mercer, Ocean | 50 min |
| Jun 20, 9:27 PM EDT | Special Weather Statement | PHI | Schuylkill | 33 min |
| Jun 20, 9:55 PM EDT | Special Weather Statement | PHI | Lebanon | 35 min |
| Jun 20, 10:04 PM EDT | Areal Flood Advisory | PHI | Berks | 86 min |
| Jun 21, 6:08 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 52 min |
| Jun 21, 6:21 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 54 min |
| Jun 21, 7:02 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Northampton | 43 min |
| Jun 21, 6:47 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 58 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.