Alert archive / Pennsylvania / Special Weather Statements in 2014
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Jun 11, 2014, 5:02 AM EDT for Berks County, Chester County, Pennsylvania; Cecil County, Kent County, Maryland; New Castle County, Delaware. It was in force for 88 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, 2014, 5:02 AM EDT (09:02 UTC)
- Expired
- Jun 11, 2014, 6:30 AM EDT
- In force
- 88 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties New Castle County, DE, Cecil County, MD, Kent County, MD, Berks County, PA, Chester County, PA
The radar
The Dover AFB radar (KDOX), 119 km from the middle of the area, began a volume at 09:04 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, 9.0 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
- 308 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1332 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
447
WWUS81 KPHI 110902
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
502 AM EDT WED JUN 11 2014
DEZ001-002-MDZ008-012-PAZ060-101-102-111030-
BERKS PA-CECIL MD-EASTERN CHESTER PA-KENT DE-KENT MD-NEW CASTLE DE-
WESTERN CHESTER PA-
502 AM EDT WED JUN 11 2014
...A LINE OF SHOWERS AND THUNDERSTORMS WILL AFFECT CECIL...KENT...
NEW CASTLE...NORTHWESTERN KENT...WESTERN BERKS AND WESTERN CHESTER
COUNTIES...
AT 454 AM EDT...A LINE OF SHOWERS AND THUNDERSTORMS WAS LOCATED FROM
23 MILES WEST OF TOWER CITY TO 10 MILES WEST OF EAST PROSPECT TO
DUNDALK...MOVING EAST AT 25 MPH.
VERY HEAVY RAIN WILL FALL FROM THESE SHOWERS AND STORMS...AND WILL
CAUSE WATER TO POND ON ROADS AND FILL POOR DRAINAGE AREAS. THE RAIN
CAN CAUSE RAPID RISES ON SMALL STREAMS AND CREEKS.
OCCASIONAL CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
DO NOT STAY IN THE OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING
THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES.
THESE STORMS WILL BE NEAR NEWTOWN AROUND 540 AM...PORT DEPOSIT AROUND
550 AM...PERRYVILLE AROUND 600 AM...MOUNT VERNON AROUND 610 AM...
NORTHEAST AROUND 620 AM AND ELKTON AROUND 630 AM.
LAT...LON 4058 7603 4064 7599 4005 7569 3951 7556
3947 7558 3929 7551 3925 7599 3919 7626
3932 7619 3943 7601 3952 7599 3955 7609
3972 7623 3973 7614 3979 7605 3988 7599
4011 7595 4014 7589 4050 7644
$$
ROBERTSONThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 6:25 AM EDT | Special Weather Statement | PHI | Salem | 65 min |
| Jun 11, 8:00 AM EDT | Small Craft Advisory | PHI | 9 hr | |
| Jun 11, 4:57 AM EDT | Special Weather Statement | PHI | Berks, Chester | 93 min |
| Jun 11, 6:45 AM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's, Talbot | 90 min |
Nearby
Special Weather Statements in Pennsylvania, 2014Special Weather Statements in Maryland, 2014Special Weather Statements in Delaware, 2014Every special weather statement in 2014
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.