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 8, 2021, 5:52 PM EDT for Berks County, Pennsylvania. It was in force for 23 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 8, 2021, 5:52 PM EDT (21:52 UTC)
- Expired
- Jul 8, 2021, 6:15 PM EDT
- In force
- 23 min
- Issued by
- NWS Philadelphia/Mount Holly
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 127 km from the middle of the area, began a volume at 21:53 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, 9.9 hours before the alert went out and 210 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
- 272 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 1291 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
863
WWUS81 KPHI 082152
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
552 PM EDT Thu Jul 8 2021
PAZ060-101-103-082215-
Western Montgomery-Western Chester-Berks-
552 PM EDT Thu Jul 8 2021
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT EASTERN BERKS...WEST
CENTRAL MONTGOMERY AND NORTH CENTRAL CHESTER COUNTIES...
At 551 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Fairview Hgts to near Reading to near
Glenmoore. Movement was northeast at 30 mph.
Wind gusts up to 40 mph and pea size hail are possible with these
storms.
Locations impacted include...
Reading, Pottstown, Wyomissing, Birdsboro, Kutztown, Royersford,
Fleetwood, Laureldale, Trappe, Topton, Leesport, Shoemakersville,
Elverson, Bechtelsville, Lyons, Lenhartsville, Spring Ridge,
Pughtown, Fairview Hgts and Glenmoore.
This includes the following highways...
Pennsylvania Turnpike between mile markers 302 and 311.
Interstate 78 in Pennsylvania between mile markers 35 and 42.
Interstate 176 in Pennsylvania between mile markers 10 and 11.
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 4065 7585 4045 7564 4020 7547 4002 7574
4028 7591 4040 7612
TIME...MOT...LOC 2151Z 231DEG 24KT 4043 7600 4031 7589 4006 7572
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 11:06 PM EDT | Tropical Storm Warning | PHI | Atlantic, Burlington, Cape May, Monmouth, Ocean | 32 hr |
| Jul 7, 11:37 PM EDT | Special Weather Statement | PHI | Sussex | 38 min |
| Jul 8, 5:27 AM EDT | Small Craft Advisory | PHI | 34 hr | |
| Jul 8, 1:49 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset | 41 min |
| Jul 8, 2:09 PM EDT | Special Marine Warning | PHI | 81 min | |
| Jul 8, 2:26 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 21 min |
| Jul 8, 2:29 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Warren | 46 min |
| Jul 8, 2:43 PM EDT | Rip Current Statement | PHI | Atlantic, Cape May, Monmouth, Ocean | 27 hr |
| Jul 8, 3:03 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 42 min |
| Jul 8, 4:02 PM EDT | Special Marine Warning | PHI | 33 min | |
| Jul 8, 4:02 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 31 min |
| Jul 8, 4:43 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Somerset | 16 min |
| Jul 8, 5:29 PM EDT | Special Weather Statement | PHI | Morris, Warren | 46 min |
| Jul 8, 5:34 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Sussex, Warren | 41 min |
| Jul 8, 6:06 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon | 39 min |
| Jul 8, 6:09 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Sussex | 51 min |
| Jul 8, 6:16 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Sussex, Warren | 44 min |
| Jul 7, 11:11 PM EDT | Special Weather Statement | PHI | Monroe | 49 min |
| Jul 8, 8:53 AM EDT | Special Weather Statement | PHI | Monroe | 52 min |
| Jul 8, 9:31 AM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 119 min |
| Jul 8, 9:46 AM EDT | Special Weather Statement | PHI | Monroe | 44 min |
| Jul 8, 3:50 PM EDT | Special Weather Statement | PHI | Berks | 25 min |
| Jul 8, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Montgomery | 39 min |
| Jul 8, 4:25 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 50 min |
| Jul 8, 4:45 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 45 min |
| Jul 8, 4:51 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 54 min |
| Jul 8, 5:11 PM EDT | Special Weather Statement | PHI | Lehigh | 34 min |
| Jul 8, 5:21 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 39 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.