Alert archive / Maryland / Special Weather Statements in 2012
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Oct 19, 2012, 7:40 PM EDT for Cecil County, Maryland. It was in force for 95 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
- Oct 19, 2012, 7:40 PM EDT (23:40 UTC)
- Expired
- Oct 19, 2012, 9:15 PM EDT
- In force
- 95 min
- Issued by
- NWS Philadelphia/Mount Holly
County Cecil County, MD
The radar
The Dover AFB radar (KDOX), 119 km from the middle of the area, began a volume at 23:43 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, 11.7 hours before the alert went out and 150 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
- 118 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 447 m above ground
- 0-6 km bulk shear
- 85 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
618
WWUS81 KPHI 192340
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
740 PM EDT FRI OCT 19 2012
MDZ008-PAZ067-200115-
CECIL MD-CHESTER PA-
740 PM EDT FRI OCT 19 2012
...STRONG THUNDERSTORMS WILL AFFECT CECIL AND CHESTER COUNTIES...
AT 737 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 14 MILES SOUTH OF
LANCASTER TO 16 MILES NORTHEAST OF BALTIMORE...MOVING NORTHEAST AT
25 MPH. THE THUNDERSTORMS WILL BE NEAR ROCK SPRINGS...OCTORARO
AROUND 815 PM...ZION...WEST NOTTINGHAM AROUND 830 PM...MOUNT
VERNON...GLEN ROY AROUND 845 PM...HOMEVILLE...
COCHRANVILLE AROUND 900 PM...COATESVILLE AND SOUTH COATESVILLE AROUND
915 PM.
VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.
WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS.
LAT...LON 3974 7610 3979 7605 3985 7603 3988 7600
3998 7599 4003 7594 4011 7595 4014 7587
3997 7578 3954 7595 3954 7607 3956 7610
3958 7608 3963 7616 3965 7616 3972 7623
$$
FORECASTER: HEAVENERThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 19, 4:15 AM EDT | Coastal Flood Statement | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more | 14 hr |
| Oct 19, 11:52 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Somerset | 105 min |
| Oct 19, 12:48 AM EDT | Special Weather Statement | PHI | Carbon | 42 min |
| Oct 19, 1:30 AM EDT | Special Weather Statement | PHI | Berks, Carbon, Lehigh | 45 min |
| Oct 19, 2:00 AM EDT | Special Weather Statement | PHI | Carbon, Lehigh, Monroe, Northampton | 45 min |
| Oct 19, 3:33 AM EDT | Areal Flood Advisory | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 3 hr |
Nearby
Special Weather Statements in Maryland, 2012Every special weather statement in 2012
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.