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 Aug 27, 2021, 6:41 PM EDT for Berks County, Pennsylvania. It was in force for 34 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 27, 2021, 6:41 PM EDT (22:41 UTC)
- Expired
- Aug 27, 2021, 7:15 PM EDT
- In force
- 34 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.25 in
- Wind
- 40
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 138 km from the middle of the area, began a volume at 22:44 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 27, 6:56 PM EDT | TSTM WND DMG | 2 Se Penn Twp, PA | DOWNED TREES AND WIRES NEAR PLUM ROAD. TIME ESTIMATED FROM RADAR. |
| Aug 27, 7:00 PM EDT | TSTM WND DMG | 1 Ene Penn Twp, PA | MULTIPLE REPORTS OF TREES DOWN BETWEEN PENN TWP AND CENTERPORT. TIME ESTIMATED FROM RADAR. |
| Aug 27, 7:09 PM EDT | TSTM WND DMG | 1 Se Centre Twp, PA | A FEW REPORTS OF DOWNED TREES AND WIRES IN CENTRE TWP. TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 10.7 hours before the alert went out and 202 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
- 780 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 983 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
027
WWUS81 KPHI 272241
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
641 PM EDT Fri Aug 27 2021
PAZ060-272315-
Berks PA-
641 PM EDT Fri Aug 27 2021
...A strong thunderstorm will impact portions of central Berks County
through 715 PM EDT...
At 640 PM EDT, Doppler radar was tracking a strong thunderstorm over
Spring Ridge, or near Reading, moving northeast at 10 mph.
HAZARD...Wind gusts up to 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Reading, Wyomissing, Kutztown, Fleetwood, Sinking Spring, Laureldale,
Wernersville, Leesport, Shoemakersville, Bernville, Lyons, Spring
Ridge, Fairview Hgts, Shillington, West Reading, Mount Penn, Mohnton,
Kenhorst, St. Lawrence and Centerport.
This includes the following highways...
Interstate 78 in Pennsylvania between mile markers 41 and 42.
Interstate 176 in Pennsylvania between mile markers 10 and 11.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4027 7603 4045 7619 4059 7579 4030 7566
TIME...MOT...LOC 2240Z 246DEG 10KT 4038 7597
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 1:33 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden | 83 min |
| Aug 27, 2:18 PM EDT | Small Craft Advisory | PHI | 44 hr | |
| Aug 27, 2:28 PM EDT | Special Weather Statement | PHI | Atlantic | 47 min |
| Aug 27, 2:33 PM EDT | Areal Flood Advisory | PHI | Warren | 109 min |
| Aug 27, 2:37 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 38 min |
| Aug 27, 2:38 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 35 min |
| Aug 27, 2:59 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 46 min |
| Aug 27, 3:07 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 24 min |
| Aug 27, 3:16 PM EDT | Special Weather Statement | PHI | Burlington | 44 min |
| Aug 27, 3:30 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 45 min |
| Aug 27, 3:38 PM EDT | Special Weather Statement | PHI | Camden | 52 min |
| Aug 27, 3:45 PM EDT | Special Weather Statement | PHI | Ocean | 30 min |
| Aug 27, 3:54 PM EDT | Special Weather Statement | PHI | Atlantic | 51 min |
| Aug 27, 3:59 PM EDT | Special Weather Statement | PHI | Ocean | 46 min |
| Aug 27, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 39 min |
| Aug 27, 4:37 PM EDT | Areal Flood Advisory | PHI | Gloucester | 106 min |
| Aug 27, 4:46 PM EDT | Special Marine Warning | PHI | 43 min | |
| Aug 27, 4:56 PM EDT | Special Weather Statement | PHI | Atlantic | 34 min |
| Aug 27, 5:02 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland | 29 min |
| Aug 27, 5:09 PM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May, Cumberland | 2 hr |
| Aug 27, 5:21 PM EDT | Special Weather Statement | PHI | Middlesex | 39 min |
| Aug 27, 5:29 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Somerset | 3 hr |
| Aug 27, 5:44 PM EDT | Flash Flood Warning | PHI | Middlesex | 4 hr |
| Aug 27, 6:52 PM EDT | Areal Flood Advisory | PHI | Salem | 98 min |
| Aug 27, 1:20 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 2 hr |
| Aug 27, 1:36 PM EDT | Special Weather Statement | PHI | Monroe | 24 min |
| Aug 27, 1:52 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 53 min |
| Aug 27, 2:12 PM EDT | Special Weather Statement | PHI | Northampton | 33 min |
| Aug 27, 2:18 PM EDT | Areal Flood Advisory | PHI | Chester | 93 min |
| Aug 27, 2:32 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe, Northampton | 28 min |
| Aug 27, 2:42 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 14 min |
| Aug 27, 3:44 PM EDT | Special Weather Statement | PHI | Delaware | 31 min |
| Aug 27, 6:29 PM EDT | Areal Flood Advisory | PHI | Berks | 3 hr |
| Aug 27, 7:17 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Aug 27, 3:48 PM EDT | Areal Flood Advisory | PHI | New Castle | 102 min |
| Aug 27, 5:11 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Aug 27, 5:39 PM EDT | Special Weather Statement | PHI | New Castle | 36 min |
| Aug 27, 6:10 PM EDT | Areal Flood Advisory | PHI | New Castle | 2 hr |
| Aug 27, 7:10 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's, Talbot | 65 min |
| Aug 27, 7:37 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.