Alert archive / Maryland / Special Weather Statements in 2011
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Aug 13, 2011, 3:13 PM EDT for Salem County, New Jersey; Cecil County, Kent County, Maryland; Kent County, New Castle County, Delaware. It was in force for 92 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
- Aug 13, 2011, 3:13 PM EDT (19:13 UTC)
- Expired
- Aug 13, 2011, 4:45 PM EDT
- In force
- 92 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Kent County, DE, New Castle County, DE, Cecil County, MD, Kent County, MD, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 66 km from the middle of the area, began a volume at 19:13 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, 7.2 hours before the alert went out and 155 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
- 611 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 672 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
329
WWUS81 KPHI 131913
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
313 PM EDT SAT AUG 13 2011
DEZ001-002-MDZ008-012-NJZ016-021-132045-
CECIL MD-CUMBERLAND NJ-KENT MD-KENT DE-NEW CASTLE DE-SALEM NJ-
313 PM EDT SAT AUG 13 2011
SHOWERS AND THUNDERSTORMS WILL CONTINUE TO EFFECT THE NORTHERN
PORTIONS OF THE DELMARVA...AS WELL AS FAR SOUTHWESTERN NEW
JERSEY...INTO THE LATE AFTERNOON HOURS. SOME OF THESE THUNDERSTORMS
WILL PRODUCE HEAVY DOWNPOURS WHICH COULD RESULT IN PONDING OF WATER
IN AREAS OF POOR DRAINAGE. IN ADDITION...GUSTY WINDS UP TO 40
MPH...FREQUENT LIGHTNING AND SMALL HAIL ARE POSSIBLE.
LAT...LON 3951 7599 3972 7624 3973 7578 3983 7567
3984 7552 3951 7499 3928 7530 3946 7555
3958 7556 3946 7558 3924 7538 3909 7540
3894 7531 3883 7572 3925 7577 3924 7601
3914 7607 3915 7628
$$
FORECASTER:
JJMThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 3:10 PM EDT | Flood Watch | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more | 13 hr |
| Aug 13, 1:20 PM EDT | Special Weather Statement | PHI | Chester | 115 min |
| Aug 13, 4:32 PM EDT | Special Weather Statement | PHI | Berks, Chester | 88 min |
| Aug 13, 5:06 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 84 min |
| Aug 13, 6:15 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 30 min |
| Aug 13, 7:47 PM EDT | Areal Flood Advisory | PHI | Berks | 3 hr |
| Aug 13, 12:13 PM EDT | Special Weather Statement | PHI | Cecil | 62 min |
Nearby
Special Weather Statements in Maryland, 2011Special Weather Statements in Delaware, 2011Special Weather Statements in New Jersey, 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.