Alert archive / Pennsylvania / Special Weather Statements in 2011
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Jun 11, 2011, 6:17 AM EDT for Berks County, Chester County, Pennsylvania; Cecil County, Maryland; New Castle County, Delaware. It was in force for 58 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 11, 2011, 6:17 AM EDT (10:17 UTC)
- Expired
- Jun 11, 2011, 7:15 AM EDT
- In force
- 58 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties New Castle County, DE, Cecil County, MD, Berks County, PA, Chester County, PA
The radar
The Dover AFB radar (KDOX), 118 km from the middle of the area, began a volume at 10:18 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, 10.3 hours before the alert went out and 163 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
- 961 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 1650 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
652
WWUS81 KPHI 111017
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
617 AM EDT SAT JUN 11 2011
DEZ001-MDZ008-NJZ016-PAZ060-061-067>070-111115-
BERKS PA-BUCKS PA-CECIL MD-CHESTER PA-DELAWARE PA-LEHIGH PA-
MONTGOMERY PA-NEW CASTLE DE-SALEM NJ-
617 AM EDT SAT JUN 11 2011
...STRONG THUNDERSTORMS WILL AFFECT BERKS...BUCKS...CECIL...
CHESTER...DELAWARE...LEHIGH...MONTGOMERY...NEW CASTLE AND SALEM
COUNTIES...
AT 613 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 10 MILES WEST OF
READING TO 18 MILES EAST OF LANCASTER TO 18 MILES WEST OF ELKTON...
MOVING EAST AT 20 MPH. THE THUNDERSTORMS WILL BE NEAR MOUNT VERNON...
HOMEVILLE AROUND 630 AM...COCHRANVILLE...FARMINGTON AROUND 645 AM...
LEESPORT...NEW MORGAN AROUND 700 AM...ELVERSON AND MOUNT PENN AROUND
715 AM.
VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.
WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
LAT...LON 4044 7626 4048 7550 4002 7539 3945 7552
3950 7557 3958 7554 3958 7556 3950 7558
3944 7556 3945 7602 3953 7599 3954 7607
3969 7622 3973 7620 3974 7613 3978 7607
3987 7601 4011 7595 4014 7590 4036 7623
$$
HAYESThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 11:15 PM EDT | Special Weather Statement | PHI | Morris | 60 min |
| Jun 11, 12:07 AM EDT | Special Weather Statement | PHI | Morris | 53 min |
| Jun 11, 12:41 AM EDT | Areal Flood Advisory | PHI | Morris, Sussex | 3 hr |
| Jun 11, 1:40 AM EDT | Special Weather Statement | PHI | Union | 65 min |
| Jun 11, 4:23 AM EDT | Special Weather Statement | PHI | Hunterdon, Warren | 67 min |
| Jun 11, 3:11 PM EDT | Special Weather Statement | PHI | Gloucester | 49 min |
| Jun 11, 3:47 PM EDT | Areal Flood Advisory | PHI | Camden, Gloucester | 93 min |
| Jun 11, 3:58 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Gloucester | 47 min |
| Jun 11, 4:32 PM EDT | Areal Flood Advisory | PHI | Atlantic | 85 min |
| Jun 11, 4:43 PM EDT | Special Weather Statement | PHI | Atlantic | 47 min |
| Jun 11, 5:01 PM EDT | Special Marine Warning | PHI | 44 min | |
| Jun 11, 5:24 PM EDT | Special Weather Statement | PHI | Atlantic | 51 min |
| Jun 11, 1:48 AM EDT | Special Weather Statement | PHI | Carbon | 57 min |
| Jun 11, 2:32 AM EDT | Special Weather Statement | PHI | Berks, Carbon, Lehigh | 58 min |
| Jun 11, 3:26 AM EDT | Special Weather Statement | PHI | Berks, Lehigh, Northampton | 64 min |
| Jun 11, 3:45 AM EDT | Areal Flood Advisory | PHI | Berks, Lehigh | 3 hr |
| Jun 11, 3:48 AM EDT | Special Weather Statement | PHI | Berks | 57 min |
| Jun 11, 5:21 AM EDT | Special Weather Statement | PHI | Berks | 54 min |
| Jun 11, 6:42 AM EDT | Special Weather Statement | PHI | Carbon, Monroe | 63 min |
| Jun 11, 1:46 PM EDT | Special Weather Statement | PHI | Caroline | 44 min |
| Jun 11, 5:53 AM EDT | Special Weather Statement | PHI | Kent, Sussex | 67 min |
| Jun 11, 6:34 AM EDT | Special Weather Statement | PHI | Sussex | 56 min |
| Jun 11, 6:52 AM EDT | Areal Flood Advisory | PHI | Sussex | 113 min |
| Jun 11, 2:43 PM EDT | Special Weather Statement | PHI | Sussex | 47 min |
| Jun 11, 3:05 PM EDT | Special Weather Statement | PHI | Sussex | 55 min |
| Jun 11, 4:09 PM EDT | Special Weather Statement | PHI | Sussex | 66 min |
| Jun 11, 4:21 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 39 min |
| Jun 11, 4:57 PM EDT | Special Weather Statement | PHI | Kent | 48 min |
| Jun 11, 5:05 PM EDT | Areal Flood Advisory | PHI | Kent | 63 min |
Nearby
Special Weather Statements in Pennsylvania, 2011Special Weather Statements in Maryland, 2011Special Weather Statements in Delaware, 2011Every special weather statement in 2011
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.